北京瑞光极远智慧教育系统解决方案
title: Beijing Raytrans Smart Education System Solution industry: Enterprise tags:
Smart Education Solution
Smart Classroom Solution
Smart Education System Solution images:
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/images/imports/img-552133f0.jpg keywords: Smart Education Solution, Smart Classroom Solution, Smart Education System Solution brief: Build a regional education resource and management platform: enhance resource sharing of courseware and test materials between schools and regions, improve the informatization level of regional education management; advance the application level of smart classrooms and digital campuses, enabling teacher-student interaction, recording and broadcasting, and convenient courseware access; elevate teachers' informatization application capabilities; combine theory with practice to establish a scientific and standardized infrastructure standard system, applied to the construction of informatization hardware environments such as education network coverage, equipment, and classrooms in regions and schools. Through the introduction of cloud computing technology, achieve elastic allocation of hardware resources, maximize resource utilization, and reduce hardware construction and maintenance costs. slug: beijing-ruiguang-jiyuan-smart-education-solution date: 2015-06-23 publishDate: 2015-06-23 featured: false
1 Smart Education Requirements Analysis
Build a regional education resource and management platform: enhance resource sharing of courseware and test materials between schools and regions, improve the informatization level of regional education management;
Advance the application level of smart classrooms and digital campuses, enabling teacher-student interaction, recording and broadcasting, and convenient courseware access; elevate teachers' informatization application capabilities;
Combine theory with practice to establish a scientific and standardized infrastructure standard system, applied to the construction of informatization hardware environments such as education network coverage, equipment, and classrooms in regions and schools.
Through the introduction of cloud computing technology, achieve elastic allocation of hardware resources, maximize resource utilization, and reduce hardware construction and maintenance costs.
2 Smart Education System Design
2.1 Smart Education Overall Architecture
The smart education system includes network construction, data center, operation platform, education system, courseware content, learning terminals, consulting services, etc. Raytrans provides vertical industry solutions based on the needs of different industry customers, offering customized solutions for basic education, higher education, enterprise education, and vocational education customers.
2.2 Smart Education Subsystem Design
2.2.1 Campus and Education Bureau Unified Network Access Subsystem
Currently, most school informatization construction focuses on digital campuses, connecting to social networks based on the campus. This not only brings high daily management costs and workload to schools but also imposes limitations on inter-school cooperation, unified management by education bureaus, and the functionality of dedicated education networks. Therefore, a region-based dedicated education optical fiber network can offer greater advantages. By integrating high-quality online education resources, it can fully compensate for the lack of educational resources in marginal schools.
The recommended dedicated education optical fiber network connects all schools via 2.5G optical fiber, providing multiple physically isolated Ethernet channels. The 2.5G transmission bandwidth is chosen because this rate typically achieves transmission distances of up to 80 km without optical amplifiers, whereas switching to 5G or higher bandwidth optical fiber can only transmit a few kilometers, and lower rates struggle to transmit multiple physically isolated Gigabit Ethernet channels. Thus, 2.5G optical fiber is the optimal choice for long-distance transmission.
Central equipment is placed at the Education Bureau or Information Center, providing unified interfaces for each school to connect to operators and higher-level education management institutions. Advantages are as follows: 1. Unified large customer access to broadband operators, fully introducing competition, giving school teachers and students multiple choices and greater benefits; 2. Avoiding disorderly competition from multiple property owners on campus; 3. A unified Internet interface for schools facilitates big data processing, public opinion monitoring, and internet behavior management in the education industry; 4. Unified telephone number access for schools, presenting a consistent image and allowing internal control over extension expansion; 5. Sufficient external bandwidth to access more dedicated network services.
The Education Bureau or Information Center uses Raytrans IDM MSAP-CP equipment as the core switching and aggregation device, while IDM NT421 or IDM GTD442 terminal equipment can be installed in office floors, student dormitories, and teaching buildings.
On the 2.5G optical fiber, 2 line-rate Gigabit Ethernet channels, 4 line-rate Fast Ethernet channels, and 24 E1 channels can be transmitted. One Gigabit Ethernet channel is mainly used for operator Internet access, serving teachers and students for internet browsing, IPTV, and publishing surveillance footage from key areas to the public. Another Gigabit Ethernet channel can be used for video conferencing, video recording and broadcasting, and video surveillance uploads. The other 4 Fast Ethernet channels can be used for other internal campus networks, such as financial networks, exam-specific networks, dedicated education networks, and management networks. The E1 interfaces can be used for telephone access, high-fidelity audio transmission, and digital ringtone broadcasting.
Multiple operator access can be achieved in various ways: one is using a multi-interface router with interface policies configured based on network speed and price; another is providing only the desired network operator's access based on teacher and student needs, directly routing the channel to the computer.
The Internet egress for each school can be unified through a high-end firewall, which is more cost-effective and requires less dedicated maintenance than each school purchasing its own firewall.
2.2.1.1 Information Center Aggregation Access
Main functions implemented:
Provide local telephone internal switching, enabling free short-number dialing within the campus and between schools;
Provide trunk access to the telephone exchange networks of operators such as China Unicom, China Mobile, and China Telecom, enabling external call functionality on campus;
Provide Ethernet service access to operators such as China Unicom, China Mobile, and China Telecom, using an Ethernet firewall to isolate internal and external networks and ensure information security;
Provide telephone trunk interfaces to connect to the telephone network of the Education Bureau or other partner institutions, enabling telephone interconnection across all units;
Provide a broadcast IPTV data interface to access broadcast IPTV television signals, delivering TV services to teaching buildings and office buildings;
Provide remote meter reading data processing functions for centralized management of water, electricity, and gas meter data in office buildings;
Provide video surveillance and conferencing functions, enabling centralized retrieval and monitoring of remote network video signals at the central end, as well as video conferencing;
Allow installation of dispatch servers and public address servers, enabling additional functions based on basic integrated service optical fiber access, supporting campus multimedia dispatch and public address functions;
The central end reserves secondary development interfaces for smart campuses, enabling centralized access to multimedia information such as campus electronic fences, parking lot surveillance, campus all-in-one cards, and campus advertising via optical fiber.
2.2.1.2 Teaching Building and Office Terminal Optical Fiber Access
Teaching buildings and offices are nodes for installing terminal access equipment, directly providing user broadband, telephone, IPTV, and remote meter reading data interfaces, using Raytrans IDM NTD421 terminal equipment. Based on end-user needs, one NTD421 terminal can be installed per office, or several NTD421 devices per floor, to meet the business requirements of each office and floor.
This terminal provides the following functions:
Provide telephone interfaces for direct connection to office phones;
Provide network interfaces for direct connection to user internet devices, such as computers and routers;
Provide network interfaces for connecting IPTV set-top boxes, enabling network TV functionality;
Provide network interfaces for connecting network cameras, enabling video surveillance signal upload from floors and key offices to the monitoring center, as well as connecting office video conferencing cameras for video conferencing;
Provide remote meter reading interfaces (RS485/RS422, etc.) for connecting water, electricity, and gas meters in office buildings, enabling meter data upload to the monitoring center.
2.2.1.3 Key Features of the Optical Fiber Access Solution
Full optical fiber transmission access
All business communication from the Information Center communication room to schools and campus uses optical fiber transmission technology. This solution adopts PDH+PCM technology to achieve high-speed fiber-to-the-home full coverage.
Campus telephone internal switching, independent operation
The Information Center communication room uses Raytrans IDM MSAP-G3CP equipment to directly implement internal campus telephone switching, allowing campus virtual operators to independently operate telephone services and provide free internal campus telephones.
Simultaneously, through this equipment, E1 digital trunk interfaces or FXO analog trunk interfaces are provided to connect to operator telephone exchange networks and the telephone systems of the Education Bureau and other partner institutions, enabling telephone interconnection.
Internal and external network isolation
The core equipment IDM MSAP-G3CP in the central equipment room uses TDM technology, providing physically isolated channels for all Ethernet network channels, achieving internal and external network isolation and ensuring information security.
2.2.2 Campus Security Surveillance Subsystem
2.2.2.1 Overall Functions
The entire system requires an intelligent network management platform to achieve unified management of all network devices and user permissions. Functions include automatic batch device configuration, automatic fault alarm and location management, real-time image switching and display, historical image playback, front-end camera control, system alarms, and data storage backup.
2.2.2.1.1 Real-time Image Display and Switching Function
Supports three video display modes: client, IE browser, and splicing screen display. Supports single-screen, multi-screen, and full-screen display modes. Each screen can select any video source for real-time image browsing;
The system has an automatic image patrol function, allowing images to be displayed in rotation using a self-set trigger sequence and time interval, with images displayed in rotation in specified windows, and the order of participating images can be arbitrarily selected;
In addition to displaying on-site video information, the system can overlay corresponding video location, time, and alarm markers on the video image. It can edit identification characters for a specific video source, automatically overlay time information, and flexibly set the display position of characters on the image;
Camera location information can be linked with electronic maps, supporting dual-screen display for simultaneous video and electronic map information;
The system should have an image capture function, allowing video images playing in a monitoring window to be captured and saved as image files. Image file formats must be standard formats such as JPEG, BMP, or GIF, for easy browsing with Windows image viewing tools;
When browsing real-time video images or playing back historical images via the video client, convenient image zooming is supported, including full-screen display of a single image.
2.2.2.1.2 Front-end Camera Control Function
Monitoring centers at all levels can control all PTZ cameras and cameras using professional keyboards and the soft keyboard provided by the video client. Control includes PTZ rotation angle, camera aperture size, focus level, heater switch, wiper switch, zoom level, and lighting switch;
The system supports user locking and unlocking of cameras. If a user needs exclusive PTZ control for a certain period, they can lock the camera. Once locked, other users cannot seize PTZ control; only the user who performed the lock or an administrator with unlock permission can release the lock;
When multiple monitoring centers control the same camera simultaneously, the higher-level monitoring center has priority control;
When camera control is unavailable, the system should prompt the current controller's information;
Cameras have a predefined trajectory rotation function to fully capture on-site video information. The time for starting camera patrol, preset positions, and patrol trajectories can be set. Cameras can patrol with different preset trajectories based on different time periods.
2.2.2.1.3 System Storage and Security Functions
Uses professional IP SAN and CVR storage system technologies, supporting the iSCSI protocol, providing Gigabit IP interfaces, with optional 1TB, 4TB, and other capacity SATA disks, enabling centralized management of digital images within the system and dynamic allocation of storage resources;
Supports cache protection with built-in battery during power failure, supports hot-swappable disks and online replacement of faulty disks, supports sequential disk power-on at startup, and disk power short-circuit protection;
Maximum host connections in SAN environment ≥ 250, with all connection licenses configured, supporting RAID levels 0, 1, 5, 10, etc. Total capacity includes a 10% redundant backup space of required capacity for long-term storage of important surveillance images.
Supports graphical management software, allowing management of multiple storage devices in one management interface, along with automatic email alarm functionality;
The system supports configuring the retention time for historical images for each video source. When the retention time is exceeded, expired historical images are automatically deleted without administrator intervention;
The system can monitor the current storage resource status of all storage devices in real time;
The system supports setting storage plans for each video source, recording in time segments. The time segment granularity is no greater than 30 minutes, and multiple recording segments can be set per day. When a video source does not record according to the plan, the system should promptly report an alarm to notify the administrator for corresponding fault location analysis.
The system shall support local recording functionality. When viewing live images or replaying historical images, authorized users can initiate local recording to temporarily store images on the client's local storage medium. The client interface should facilitate easy control for starting and stopping local recording. The video client shall support playback of local recordings.
The system shall have data backup functionality to redundantly save important data. The system supports manual backup, where authorized users can initiate data backup via the video client to back up data from specified video sources for specific time periods. The system also supports automatic backup strategies, allowing periodic backup of data from specified video sources for specific time periods. When backing up data, descriptive information for the backup data can be added. Users can perform fuzzy searches on backup data based on this descriptive information and request on-demand playback.
The storage application management unit obtains information on all video sources in the system via the network and stores it in high-capacity storage devices. The system can support a distributed cluster storage structure composed of N computers. The underlying communication layer of these computers utilizes our high-performance communication platform technology. Under normal operation, each storage computer is responsible for storing certain recording information from the entire system. First, storage groups need to be defined, with each storage group consisting of N video channels. A storage group is bound to a storage server. Thus, all video images in the system will be stored across different storage servers. The model adopted is a comprehensive method combining front-end distributed recording and back-end centralized recording. Specific functions are as follows:
Supports direct recording and backup management for a large number of remote images not being viewed in real-time by the central client, while also managing various centralized storage devices, not just local hard drives.
Enables fast retrieval of data stored in centralized storage devices and provides related services.
Supports retrieval of specific surveillance recordings and associated data via the Web interface, locally and on the client, by camera, time, associated event, log, alarm, and other criteria.
Allows viewing of the detailed storage location of a recording, displaying relevant status information, and enabling timely playback of that recording.
Allows browsing of surveillance files on hard drives and SAN storage devices.
Supports recording schedules and supplementary recording. Each recording group can have its own recording schedule. The underlying execution of recording is managed by our plan and task scheduling engine. During each recording process, the system records the execution time. The system's maintenance server calculates the time periods requiring supplementary recording based on the difference between the planned schedule and actual execution. The supplementary recording system will automatically download the missing recording information from the appropriate DVR. When a recording schedule changes, the previous schedule is recorded, and the system can automatically determine whether the supplementary recording should reference the schedule before or after the change.
Disk clearing strategy and recording retention priority. When the system detects that storage capacity exceeds the specified maximum threshold, it will initiate a disk clearing task. This task is managed by the maintenance server, which periodically checks disk status, performs disk cleaning, automatic export, and other functions.
2.2.2.1.4 Video File Retrieval and Historical Image Playback Function
The system can assist the video decoder in establishing a connection with storage resources and assist the monitoring client in establishing a connection with storage resources to achieve video data playback.
The system supports retrieving historical image information using a combination of video source identifier and start/end time. Search results are displayed in a list format. When performing local retrieval of historical images, the time from initiating the retrieval to obtaining the result should be less than 1 second, with no noticeable waiting time.
The system supports simultaneous playback of multiple historical image channels. During historical image playback, it supports pause and resume, as well as normal speed, fast forward, and slow motion playback. Fast forward playback supports 1x, 2x, 4x, and 8x speeds. Slow motion playback supports 1/2x, 1/4x, and 1/8x speeds.
2.2.2.1.5 Network Operation and Maintenance Function
Achieves comprehensive monitoring of the status of front-end cameras, encoders, transmission lines, storage devices, back-end decoding, and management platform operation. It can diagnose video image quality.
The management platform can automatically detect the working status of devices within the system (encoders, decoders, video clients, storage devices). When a device goes offline, it can quickly report an alarm. When a device recovers from a fault and comes back online, it can automatically rejoin the system and resume normal operation without changes to existing configurations, requiring no manual intervention during the recovery process.
Administrators can configure parameters for encoders and decoders within the system through a centralized management interface and can perform software upgrades.
The system has comprehensive security auditing and logging functions, capable of recording device operation status, various alarm information, user login logs, etc.
The management server can perform unified management of IPSAN storage resources, create storage plans for cameras, and assist the video management client in establishing iSCSI connections with the IPSAN.
Video data retrieval and playback: After confirming the retrieval data from the video management client, the retrieval result (whether corresponding data exists within a specified time period) is returned to the video management client. The client can select data from a specific time period for playback.
The video management platform should support hierarchical, group-based, and device-based management of user permissions, effectively controlling and blocking connections from unauthorized users to ensure data security.
2.2.2.1.6 Permission Management Function
The platform should provide a multi-level user management structure, where each level of user has different management permissions. Users can perform corresponding system access and monitoring operations based on their assigned permissions to prevent illegal login and unauthorized operations.
User levels should be divided into at least three levels: Super Administrator (with system-level configuration permissions, capable of user management and device management), General Administrator, and Regular User. User management and operation permissions should be divided into at least the following types: user management permission, device management permission, real-time viewing permission, patrol configuration permission, PTZ control permission, historical image retrieval and playback permission, image backup and download permission, etc.
When a user logs into the system, user authentication and permission checks must be performed. User login account information transmitted over the network must not be transmitted in plain text.
Multiple users can simultaneously view real-time images from any monitoring point. Users with higher levels have priority control rights (e.g., PTZ control).
2.2.2.1.7 System Alarm Function
1) Alarm Methods
System alarm methods are divided into three types: motion detection alarm, external input alarm, and video source loss alarm:
Motion Detection Alarm: When the scene at the monitoring site changes, the system generates an alarm and automatically executes alarm linkage functions such as screen switching and video storage. Each video channel's image is divided into more than 8 motion detection areas, and the sensitivity and effective time for each area can be set individually.
External Input Alarm: The multimedia access unit at the monitoring site has alarm input functionality. Through alarm probes installed on-site, it collects information such as smoke alarms, water leaks, gas alarms, glass breakage, and door openings at the monitoring site. The effective time of the alarm can be set, and remote alarm cancellation functionality is supported.
Video Source Loss Alarm: When a video cable is disconnected or no video signal is obtained, the system generates a no-video-source alarm.
2) Alarm Linkage Function
Alarm and Video Linkage: When an alarm occurs, the system automatically switches to display the alarm video information, automatically stores the alarm video, automatically captures images of the alarm scene, and displays the alarm list prominently on the client.
Alarm and Control Linkage: When an alarm occurs, the system automatically turns on on-site lights, automatically activates on-site sirens, and starts other on-site equipment.
Alarm Linkage Output Function: When an alarm occurs, the monitoring center has multiple output alarm methods, including audible and visual alarms, alarm printing, alarm short messages, voice alarms, and electronic map alarms. At the same time, alarm information can also be output to other alarm processing systems (e.g., alarm dispatch systems).
3) Alarm Query Function
Historical alarm information can be queried based on criteria such as camera name, date and time, and alarm type. When video is associated with an alarm, querying the alarm will automatically find the corresponding video files stored during the alarm time period.
2.2.2.2 Platform Control Function
2.2.2.2.1 Remote Real-Time Image Viewing
Video images can be intuitively viewed via IE. The layout of cameras and detectors across the entire jurisdiction can also be intuitively viewed through the district maps in the electronic map. Monitoring images for a specific area can be viewed by clicking on the camera icon responsible for that area on the electronic map. The system supports vector maps, allowing easy map zooming, and can be seamlessly integrated with GIS. This facilitates future positioning and monitoring of vehicles or other GPS terminal devices within the jurisdiction. Future upgrades can also integrate wireless video from vehicle 3G networks and locate vehicles via the map.
2.2.2.2.2 Remote Camera Control
Supports PTZ control (pan, tilt, zoom, auto), camera control (iris, zoom, focus), auxiliary switch control (wiper), image effect adjustment (brightness, contrast, chroma, saturation, volume), and speed dome control (preset position setting and calling, auto cruise).
2.2.2.2.3 Real-Time Detection and Scheduled Inspection
The system can monitor the operational status of devices in real-time. When a device anomaly occurs, it can issue an alarm, display the alarm location and content on the electronic map, and provide audible and visual prompts. Administrators can view the operational status of all devices, the current activities of all logged-in users on the network, alarm and handling situations, and operation logs at any time, and can generate statistical charts.
The system has the function of performing scheduled inspections and clock synchronization for devices. Inspection content includes storage status, network connection status, system operation status, number of connected clients, and operational status parameters provided by the device manufacturer. The obtained data is stored in logs and can display current or historical status in the form of curves, charts, etc.
2.2.2.2.4 Remote/Local Image Retrieval and Playback
Recording materials such as normal recordings, motion detection recordings, alarm recordings, and captured images can be retrieved, downloaded, and played back based on search criteria including time, channel, local, and remote. They can also be saved to the storage server at the monitoring center. During playback, operations such as play, pause, stop, fast forward, fast rewind, image capture, and video clip editing are supported. Multi-channel simultaneous playback is also supported for convenient viewing of recording materials.
2.2.2.2.5 Multi-Screen Preview Groups
Preview group patrol switching is supported. Preview groups can be customized, supporting 1, 3, 9, 16, 24, and 32 multi-screen preview groups. It can be configured to automatically open channels and start patrolling upon startup.
2.2.2.2.6 Remote Device Upgrade and Maintenance
For the maintenance of various remote alarm and audio/video terminal devices on the network, administrators do not need to go to the device site. They can monitor device operational status and modify device parameters remotely. This improves device maintenance efficiency, saves manpower and time, facilitates overall system management, and provides strong assurance for the reliability of the entire monitoring system.
2.2.2.2.7 Remote Alarm Arming/Disarming
The working status of all front-end alarm hosts can be viewed in real-time via the network. The arming, disarming, zone bypass, and alarm system reset of the alarm hosts can be controlled remotely.
2.2.2.2.8 Alarm Linkage
Alarm information for emergencies occurring anywhere, such as robbery alarms, burglary alarms, and incident disputes, can be monitored via the network. When an alarm occurs at a certain location, the alarm information is automatically uploaded to the monitoring center. The on-site images linked to the alarm signal are simultaneously transmitted to the monitoring center, displayed in a pop-up window, and automatically recorded and backed up at the monitoring center. The location of the site on the electronic map will flash. Simultaneously, the monitoring center generates audible or visual alarms.
2.2.2.2.9 Voice Intercom and Monitoring
The monitoring center can conduct two-way voice intercom with accident sites equipped with intercom devices. Through the monitoring system center software, it can call and connect to the area where the front-end camera is located for voice intercom, enabling mutual communication and guidance for daily work tasks.
2.2.2.2.10 Automatic Time Synchronization Function
The monitoring center sets up an automatic time synchronization service. When a site's DVR connects to the main control server, it will change its local time to match the main control server's time. This ensures the accuracy of the time parameters of surveillance recording materials and improves the credibility of the data.
2.2.2.2.11 Various Permission Controls
Users at all levels may only view video and audio signals within their authorized permissions and perform corresponding remote PTZ control operations after authorization from the monitoring center server; control terminal machines are registered within the management server via MAC address encryption, with control terminal functions restricted accordingly.
2.2.2.2.12 Leadership Inquiry Function
Leaders at all levels can use desktop PC office systems to query statistical data (operator attendance, summary of violation operations, summary of alarm information, etc.) and recorded video materials (non-real-time recordings, violation operation recordings, alarm recordings, etc.) via IE browser, and can also directly connect to real-time images for on-site supervision.
2.2.2.3 Platform Management Functions
2.2.2.3.1 Device Management
As the scale of digital surveillance systems expands, the number of devices connected to the system will increasingly grow the management workload, while system operation may also be affected by business adjustments, and various system operating parameters will be continuously optimized. Therefore, the management platform should have full-network device management capability. Depending on the level of openness of the connected hardware devices, it should provide at least the configuration capability required for routine user maintenance, and as far as possible achieve device maintenance and management capabilities for all aspects other than hard faults.
These management capabilities will be specifically reflected in the following aspects:
Ø Monitoring of device operating status
Ø Multi-level cascaded networking management of analog matrices
Ø Online modification of operating parameters for DVRs or video encoders
Ø Modification of operating parameters for centralized storage devices
Ø Auxiliary fault diagnosis and reporting
Ø Remote software upgrade
Modifiable operating parameters for DVRs or video encoders include: video format (CIF/D1), transmission bitrate adjustment, character overlay modification, camera index name modification, recording strategy, external alarm source configuration, PTZ or speed dome camera communication protocol settings, etc.
Complex distributed network video systems require interconnection of multiple subsystems. Initial installation and commissioning may require configuration of thousands or even tens of thousands of parameters, and during actual operation new devices frequently need to be added or parameters adjusted. These tasks can no longer be accomplished through simple command-line statements. Relying on developers to perform system configuration and maintenance would dramatically increase system implementation costs and make handover to the owner impossible.
The Raytrans video surveillance management platform supports the connection of various devices equipped with communication interfaces and providing communication protocols. All image resources are subject to unified numbering, unified configuration, unified scheduling, and unified management. Administrators can remotely read and configure any device in the system in batch, and can adjust various parameters of devices individually or in groups; the system configuration process runs in the background and does not affect users' current surveillance operations.
2.2.2.3.2 User Management
Includes login and logout; adding, deleting, and modifying users, etc. User information includes login username, password, permissions, user description, and other information. Permissions are divided into three types: system administrator, operator, and general user. The system administrator has the highest authority and can use all management functions; operators cannot perform functions such as modifying logs, adding users, or attendance and performance statistics; general users can only play authorized recorded files. Operators or system administrators log into the system to obtain corresponding permissions. (Detailed time records implement the check-in function)
2.2.2.3.3 Log Management
The system automatically records operator log information (operator login, logout, routine operations, alarm information, device fault information, operation type, operation time, operator, operation success or failure, etc.), and can automatically upload it to the monitoring center management server database, serving as the basis for staff performance assessment and determination of whether violations have occurred, for future leadership inspection. In addition, operator operations on surveillance subsystems can also be optionally recorded in logs, such as viewing images or controlling remote monitoring hosts. Users can view logs by category.
2.2.2.3.4 Recording Material Management
The recording materials stored in the monitoring center storage devices consist of video clips of the corresponding time segments at the scene when violation records are discovered or alarms occur, along with the corresponding generated records. Management of this data information should include: record information generation, such as file name, generation time, operator identifier, time segment, event type, recording storage path, etc. Records are automatically generated by background programs; recording material maintenance, such as periodic backup archiving and cleanup; reception of remote recording materials, extracting recording information from remote surveillance sites during non-business hours according to custom-defined extraction strategies, such as time segments; supporting multi-user retrieval of recording materials. Authorized operators or leaders can view corresponding video clips after the fact, for example by opening a web browser, entering username and password information, obtaining the statistics page, calling up relevant recordings based on the statistics, clicking to view recording information, obtaining the list of authorized recording events, and clicking on one recording event to automatically launch the media player for playback.
2.2.2.3.5 Maintenance Management
Register and catalog all digital surveillance hosts within the jurisdiction to form complete equipment records. Registration contents include: device name, manufacturer, applied site name, service contact phone number, etc. Operations such as modification, deletion, addition, browsing, and querying can also be performed. When a device fails, the operator registers it and marks the device as unavailable; after the fault is resolved, the operator removes the fault marker. Operations such as modification, deletion, addition, browsing, and querying can be performed.
2.2.2.3.6 Operation Management
1) Multiple Image Operation Control Mechanisms
Network clients can monitor multiple real-time image channels simultaneously and display them on one screen at the same time; multiple network clients can simultaneously monitor any front-end image. Images from any front-end monitoring point can be displayed in real time on the video wall, with sequential switching display. With network conditions supported, multiple users at different locations can simultaneously view real-time video from any site within the system online. Personal monitoring terminals can display 4 to 16 split-screen multi-picture views, with each screen able to switch to any image in the system. Multi-picture combinations, sequential switching modes, and camera preset positions can be saved as files for repeated use.
Camera grouping: Supports grouping and switching selection according to monitoring areas, management permissions, and actual usage conditions (such as patrol routes), with simple configuration.
Sequential switching: The system has automatic video patrol functionality, performing image inspection of monitoring points across the entire network at configurable intervals. Objects participating in patrol can be arbitrarily set, and patrol intervals can be configured. Predefined trigger sequences and time intervals can be used to sequentially display surveillance images; specific devices can be designated to perform specific actions within a certain time period.
Camera information settings: Can set the location, IP, alias, area, site, and other information of all cameras in the system.
Character overlay and image masking: Chinese names, current date, time, site, camera number, and other character information can be overlaid at any position on the image; images and black screen frames can be overlaid at any position on the image to mask areas requiring concealment. Each camera can have more than 8 different preset location names; when the camera rotates to the corresponding angle, the system automatically displays the corresponding location name. The system can use subtitles from different devices as needed, with subtitle content, display position, and other parameters kept consistent.
PTZ and speed dome control: Supports direction control, auto scan, preset position management, aperture and focal length management, and lens zoom; PTZ speed is adjustable; supports light, wiper, and power switch control; supports custom auxiliary switch control; supports camera locking and unlocking; facilitates parameter configuration for PTZ/speed dome controllers. Features a full-function PTZ lens control interface and custom communication protocol definition, compatible with multiple decoder types; can set and control full-range stepless speed variation, preset position control, and cruise control of high-speed dome cameras.
Keyboard and monitor operation management: Supports matrix keyboards from multiple manufacturers, full-network roaming of keyboards, and multiple monitors forming a large screen. Operators can complete the vast majority of real-time monitoring operations through the keyboard. Supports monitor permission settings and locking. Supports complex corresponding relationships between monitors and keyboards with on-screen display. Monitors can automatically switch according to preset camera browsing sequences; a total session time can be set for each keyboard user; physical parameters such as keyboard model and serial port can be configured. Users can input camera numbers or switch by multi-level camera lists, or click camera icons on the electronic map to switch; operations can be performed by clicking a soft keyboard with the mouse, or by connecting a hard keyboard and using the joystick; the keyboard joystick can perform not only PTZ directional operations but also lens zoom operations.
2) Automatic Operation Timeout Protection
Monitoring center users can operate using either analog matrix keyboards or computer monitoring terminals; the system provides an automatic logout time for each operation keyboard. If no operation is performed on the keyboard after the automatic logout time elapses, the keyboard will automatically relinquish control of the device; the automatic logout time is adjustable from 1 to 255 seconds. If an operator with high-level permissions leaves without locking the control keyboard, the system will automatically lock the keyboard after a certain period to prevent unauthorized personnel from performing illegal operations; the automatic lock time is adjustable from 1 to 99 minutes.
3) Recording Operation Management
The system can record all images in 4CIF format for 24 hours, with a retention period of 15 days; scheduled recording, alarm-triggered recording, and motion detection recording can also be performed as needed, with time segments definable separately; each camera can have multiple recording time segments set per day. Important recordings should have upload and backup functions; users can query by entering camera number and time, or click monitoring points on the electronic map and then query through the time list; selected image segments can be additionally saved in standard formats such as AVI or DivX, and selected images can be saved in JPEG and BMP file formats or printed as photos; during playback, video files can be freely concatenated, and video streams can be edited and played during playback.
4) Camera Automatic Cruise
Cameras have an automatic cruise function, capable of patrolling preset monitoring positions according to preconfigured times and speeds. When a user operates the camera, the cruise state should be temporarily cancelled or terminated; when the user abandons operation or the operation keyboard is automatically logged out, the camera should return to the preset cruise state.
5) GIS Linked Operations
The video surveillance management platform can integrate an electronic map (GIS) system for surveillance operations through expansion. Authorized users should be able to re-edit each camera point on the electronic map. Users can set their own map login interfaces; when a surveillance user logs in, the system will pop up the default map interface of the area under their jurisdiction.
2.2.2.3.7 Alarm Management Functions
1) Alarm Information Management
The central control terminal can receive device abnormality alarm information uploaded from front-end acquisition terminals (video/audio signal loss, hard disk errors, software abnormalities, etc.) and probe alarm information (alarm probe alarms, video loss alarms, etc.), and can automatically call up the video images of the relevant channels at the alarm point according to preset settings. Alarm information is simultaneously stored by category on the server, and text descriptions are promptly added to relevant recordings to facilitate file preservation and querying.
Alarm access: Through I/O alarm inputs or RS232 serial ports, the system can access various standard alarm signals; supports connection of multiple models of alarm boxes and alarm hosts.
Remote alarm and linked control: Detects multiple alarm signals; when an alarm occurs, automatically activates various corresponding linked devices, switches video to the corresponding camera, triggers automatic recording, and reports the alarm to the monitoring center over the network, with the client displaying an alarm notification pop-up.
Alarm linkage worksheet: On the client, an alarm linkage worksheet is assigned to each alarm input. The worksheet can specify which alarm outputs are linked for different time segments from Monday to Sunday and on holidays.
System alarm events can be further subdivided into device fault alarms, incoming alarms, and network-linked alarms.
2) Device Fault Alarms
The management software platform communicates with front-end installed devices at a certain refresh rate and processes request commands from various devices. Within this refresh cycle, if a device does not respond to the management software platform's commands, it can be considered a device fault or network fault. Based on this, the system can be extended to achieve fault alarm display and analysis for all managed devices across the entire network. The most common types include:
Unplanned disconnection alarms of DVRs and encoders
Single-channel video loss or abnormality alarms
Network congestion alarms
Storage device operation abnormality alarms
3) External Physical Device Alarms
This alarm type refers to various switch-type alarms connected to the system and already configured, including other alarms identified by the software.
Various Manual Button-Type Alarms
Probe Sensor-Type Alarms
Motion Detection Alarms
4) Network-Integrated Alarms
The system software platform can accept open database form-type alarms, such as 110 alarm dispatch center alerts, license plate blacklist alarms, etc. The system software platform has corresponding database query and trigger strategies, and can issue processing instructions based on the interface type.
5) Alarm Event Processing Procedures
When an alarm event occurs, the system notifies the duty personnel via a pop-up event window, supplemented by audible and visual prompts. The alarm event display is considered the highest priority level, and based on predefined settings, various alarms can be classified into three levels: General, Urgent, and Critical. Critical level alarms require priority processing, and any unprocessed alarm event will be persistently displayed at the topmost layer to alert the responsible personnel.
The system software platform can send alarm events to designated duty stations for processing. It can specify the IP address of the duty station workstation or the user account for processing. Alarm events can be sent to a single duty station or multiple duty stations. The alarm will only disappear after the event has been processed. The processor can also add a brief note with the processing result in the remarks column for future reference.
Alarm events can also be used as keywords for querying recorded video, allowing retrieval of stored recordings and reducing the time spent on manual video comparison.
6) Alarm Event Contingency Plans
Contingency plans for police events are necessary. In the event of an emergency, in addition to deploying necessary police forces, the system software platform can execute a series of automated actions:
Ø The main console automatically switches to map mode, displaying the alarm source location
Ø Images from points associated with the alarm source are automatically displayed
Ø Recording is initiated
When an alarm or other police situation occurs, the system can automatically switch to the corresponding monitoring point, display the image from that point on the screen, provide an indication on the electronic map, issue an audible alert from the computer, and record relevant alarm information. When switching and controlling cameras, it can indicate nearby monitoring points on the electronic map.
Based on the alarm source, it is divided into motion detection and external system access. Motion detection areas and effective times can be set separately. It provides multiple alarm notification methods such as SMS, alarm boxes, and real-time printing. During an alarm, it automatically switches video, saves video, and captures snapshots. It allows setting associations between video and alarm quantities, enabling automatic retrieval of video recordings related to alarm events using the alarm event as a search keyword.
2.2.3 Distance Education Subsystem
Ø Establish a data center: Enable online related teaching activities, such as learning, training, exams, certification, etc.;
Ø Utilize internet technology: Enable teaching across different locations, different times, without spatial limitations;
Ø Multimedia technology: Enhance teaching quality through tools such as recording/broadcasting, video, and electronic whiteboards.
2.2.4 Campus Broadcasting and Background Music Subsystem
A smart campus brings you not only convenience and comfort in life but also the ability to stroll leisurely with a background music system. In the event of an emergency, it can also issue urgent notifications and broadcasts.
Background music can be broadcast in zones, or users can customize it via smart terminals, setting a multi-machine broadcast control mode based on priority levels. For example, shopping malls, teaching buildings, canteens, and dormitory buildings can all customize their own music.
All broadcast terminals use IP stereo broadcast terminals. Existing broadcast systems can also be retrofitted.
Background music and LCD screens enhance the auditory and visual experience on campus. This brings not only convenience and comfort to learning and life but also allows for a leisurely stroll across campus accompanied by piano music. LCD screens eliminate the need to post notices and advertisements on various units and bulletin boards, reducing pollution and enhancing aesthetics.
The broadcast system adopts a pure digital network audio broadcast system based on the IP data network. The system supports the digital conversion of various analog audio sources. As a digital audio broadcast system, it directly utilizes audio resources in digital format. Based on the different broadcast areas of the campus, the system is divided into one main broadcast control center and multiple sub-broadcast control centers.
The main control center serves as the primary broadcast control center, using a digital broadcast host combined with multimedia master control software to achieve broadcasting across the entire campus. The main control center can directly broadcast and communicate with armed police on duty at two guard posts to handle police situations. Each sub-control center serves as a broadcast sub-control center, using multimedia sub-control software to achieve independent broadcasting for specific prison areas. The normal duty of the monitoring center is perimeter monitoring. When a linkage alarm occurs in a certain defense zone, the broadcast (intercom) equipment on the two adjacent armed police guard posts automatically establishes an intercom broadcast state with the main control center, and the video wall displays the broadcast access status. After the alarm is disarmed, it automatically resets. The overall system platform records the entire process of the police incident and its handling in detail.
The broadcast system has the following main functions:
Fire Alarm Linkage Emergency Broadcast
During a fire emergency alarm, it can perform one-to-one or one-to-many group automatic emergency broadcasts.
Point-to-Point Paging Broadcast
Sub-control workstations can use a microphone via a sound card to perform single-point or group paging broadcasts to broadcast terminals.
Paging and Intercom Function
Intercom terminals can communicate with each other. This enables office broadcast announcements to any area, as well as call and intercom functions between duty rooms, and between the command center and duty rooms.
Supports Single-Point Playback
It can broadcast to any single point, group, zone, or the entire area. The system can set any number of groups to play specified audio programs simultaneously, or broadcast announcements to any specified area.
2.2.5 Campus All-in-One Card Subsystem
The all-in-one card system uses the IC card as the information carrier, IC card read/write devices as information exchange units, and computer and communication technologies as means to connect various campus facilities into an organic whole. In this all-in-one card system, students, faculty, staff, visitors, etc., can use a single IC card representing their personal identity to achieve "one-card" functions on campus, such as identity verification, vehicle access management, access control management, consumption management, security patrol, and attendance tracking. It also integrates with the virtual currency of campus students and faculty, enabling functions like electronic wallet payment and online card swiping payment, providing users with a safer, more convenient, and comfortable working and living environment. It offers managers more convenient management tools, organically integrating various campus subsystems to form a complete intelligent all-in-one card system.
The enterprise all-in-one card system is built on the campus network, utilizing computers, network equipment, terminals, and other devices to fully leverage network advantages. Using the IC card as a carrier, it realizes an advanced information management system. From the perspective of IC card data, through systematic analysis of the IC card application process, the entire network system architecture adopts a three-tier platform structure: the digital campus central data serves as the first-tier platform; the front-end service system serves as the second-tier platform; and the various application systems serve as the third-tier platform.
First-tier platform: The campus's shared data center, unified identity authentication, and unified portal system serve as the core for data exchange and sharing.
Second-tier platform: The front-end service, as the application access second-tier platform, carries data transmission, load balancing, access auditing, coordination of third-party subsystems, and isolates applications from direct database operations, significantly improving system performance.
Third-tier platform: The various application subsystems of this project and other application subsystems related to the card.
The main design of the large-scale all-in-one card system adopts a three-layer architecture for better processing performance and clear division of responsibilities among systems. It is constructed from various functional modules. When a functional module in the all-in-one card management part is upgraded or modified, other modules do not need recompilation; only a small amount of configuration or setup is required. When application systems are upgraded or modified, the platform and corresponding management parts require no changes; only simple configuration based on registration information such as system code, machine code, and IP address is needed. This fully achieves the goal of building multiple applications step-by-step, running them independently, managing them centrally, and sharing data globally.
The system structure design fully considers the dual-use capability and compatibility for both online and offline operation.
System operation modes generally include real-time communication and non-real-time communication. Based on years of engineering implementation experience, our company believes that a stable and secure campus all-in-one card system must be one that tightly integrates both operation modes. That is, it can be used both online and offline. When online, the system operates in a connected communication mode, and various data is automatically exchanged. Once a network failure occurs, the payment/identification media cards and terminal devices can still operate normally offline.
The overall system structure diagram is as follows:
2.2.6 Campus Security Intercom Subsystem
2.2.7 Campus Vehicle Management Subsystem
The vehicle management system includes several aspects: vehicle management, parking lot traffic planning, and pedestrian guidance. All entrances and exits adopt networked management. The payment method uses Mifare cards, with billing methods divided into fixed and temporary categories.
Parking lot exits feature a map of the city's main road network traffic conditions. Entrances have parking space availability indicators. Internally, there are parking guidance signs. Important vehicles can be guided throughout the entire process.
Scientific management of vehicles entering and leaving the campus gate and underground parking lot is achieved through the all-in-one card swipe sensing method. Residents can use a single card for entrance/exit management, unit door management, and other systems. Visiting vehicles can use temporary cards for entry and exit, complemented by an image comparison function for vehicles. This ensures the safety of owners' vehicles, prevents the entry of unauthorized vehicles, and can be extended to the campus consumption domain.
This system can achieve the following functions:
Ø Temporary Vehicle Charging Function: Temporary vehicles collect a temporary card from the ticket dispenser upon entry and must pay the specified fee upon exit, confirmed by security before leaving;
Ø Parking Lot Management Function: The parking lot management function is the core function for centralized aggregation, comprehensive processing, and intelligent response of parking lot information. Managers use this function to fully control various information indicators of the parking lot, achieving functions such as comprehensive release, unified scheduling, automatic backup, and alarm prompts;
Ø Parking Space Guidance Function: Provides drivers with information on parking space occupancy status and internal driving routes within the parking lot through various methods such as SMS query, online query, and terminal display, guiding drivers to find parking spaces in an optimized and convenient manner;
Ø Reverse Car Search Function: The reverse car search function allows users to find the location of their parked vehicle and the guidance route via smart terminals or SMS queries, facilitating users in quickly locating the parking area;
Ø Special Vehicle Management Function: Special vehicle management is an important upgrade function of the intelligent parking lot. Using technologies such as space sensing, video recognition, and smart card reading, it provides exclusive permissions for special vehicles. The parking lot entrance can actively identify special vehicle identities and automatically guide them to exclusive parking spaces. When a special vehicle's space is illegally occupied, the system automatically issues an alarm;
Ø Image Comparison Function: When a vehicle enters or exits the parking lot, the digital video recorder automatically activates the camera function and stores the photo file on the computer. Upon exit, the computer automatically compares the new photo with the vehicle's last entry photo, allowing monitoring personnel to monitor the vehicle's security status in real-time;
Ø School Shuttle Bus Real-Time Information: Provides campus personnel with information on the shuttle bus's running status, driving route, and estimated arrival time through various methods such as bus stop display screens and mobile terminals, guiding faculty, staff, and students to use the shuttle bus in an optimized and convenient manner.
2.2.8 Remote Meter Reading Subsystem for Water, Electricity, and Gas
The remote meter reading and metering system is an important component of campus intelligence. It will replace traditional door-to-door fee collection and IC card metering fee collection methods, making the metering of water, electricity, gas, heating, and heat meters in student dormitories, faculty dormitories, classrooms, and office buildings more accurate, convenient, and efficient, facilitating centralized management.
2.2.9 Campus Street Lighting and Landscape Lighting Subsystem
Street lighting monitoring involves controlling the switching on/off of road and landscape lights via the network. The status of the lights can be monitored through the central monitoring platform, greatly saving labor costs and electricity bills, and improving management efficiency.
At the monitoring center, industrial control computers can be used to monitor the working status of the lighting system in each road section at any time, to know whether each section has lit up normally. Real-time data such as lighting rate and switch status can be observed at any time, significantly improving lighting management levels. The monitoring computer can be used to set the daily timed on/off times for the lighting system in each road section, ensuring the daily on/off times perfectly match the dawn and dusk times. It can also be integrated with various sensors to turn off lights when no one is present and turn on lights in a fixed area during an alarm. Instructions for temporary switching on/off of lights (including the fountain system) can be issued to the lighting switch cabinet as needed at any time.
2.2.10 Public Area WiFi Coverage and Authentication System
WiFi signal coverage includes both the internal network and external network, covering areas such as teaching buildings, cafeterias, and public areas on campus. The internal WiFi is primarily used for transmitting and exchanging short messages among campus staff, faculty, and students, and can also be used for notifications or reminders. Access to the internal network requires a password. The external WiFi can be used free of charge and is mainly intended for visitors or personnel to interact with the Internet. Free WiFi is an essential part of attracting visitors, and it also serves as an excellent promotional tool. When a visitor connects to your free WiFi hotspot and opens a browser, a welcome interface will automatically pop up, which can be used to introduce and promote the school.
2.2.11 Emergency Command and Dispatch System
The multimedia dispatch system is based on the existing campus basic transmission communication methods, integrating TDM communication, VOIP communication, wireless trunking, fixed telephones, and GSM communication to achieve one-key direct calling for dispatchers. It also includes all common functions of a dispatch system, such as forced insertion, forced disconnection, monitoring, group calling, conference mode, and call recording.