Base Station Energy-Saving Ventilation, Base Station Anti-Theft Alarm, Transmission Line Monitoring, Transformer Anti-Theft

                                             ----------Beijing Raytrans Digital Technology Co., Ltd.

The base station/equipment room energy-saving intelligent fresh air system is suitable for unattended communication base stations, equipment rooms, and device centers. It not only provides energy-saving ventilation functions but also features powerful central network management capabilities. The front panel LCD displays the system's working status and operational data in real-time Chinese characters, and it provides 6 switch alarm inputs that can accommodate smoke detectors, infrared sensors, door magnets, water immersion sensors, and other switch inputs.

[Smart Ventilation Energy-Saving](

1. Both support air-conditioning linkage control without frequent control jitter.

2. Comprehensive safe operation modes and reliable temperature regulation ensure the safe operation of equipment room devices.

3. High-precision temperature and humidity sensors are adopted, utilizing multiple data acquisition and filtering smoothing techniques for accurate and stable data.

4. Based on reliable measurement and status detection, the system's self-check technology absolutely ensures that the most feasible cooling method can be activated when temperature anomalies occur.

5. Unique control technology with strong compatibility and scalability; the system controller provides standard isolated switch, digital, and analog interfaces.

6. Compatible with standard interfaces and power environment monitoring software, providing standard protocols.

7. The system supports connecting multiple air conditioners through available interfaces, fully utilizing intelligent resources while enabling remote control, remote measurement, remote adjustment, and remote signaling functions.

8. Provides an Ethernet network management channel for efficient transmission of collected data.

9. Provides RS232/RS485 interfaces, compatible with various communication lines and rates, facilitating functional expansion.

Solution Advantages and Disadvantages

Performance Category	Smart Ventilation Energy-Saving System	Heat Exchange Energy-Saving System
Core Component	Data Collector and Ventilation Fan	Data Collector and Heat Pipe Heat Exchange Unit
Energy-Saving Efficiency	Relatively High	Moderate
Cost	Relatively Low	Relatively High, Contains Copper Pipes in Materials
Applicable Scope	Southern Regions, Areas with Higher Air Cleanliness	Regions North of the Yellow River, Areas with More Dust
Dust Prevention Effect	Moderate, Includes Dust Filter Device	Good, Heat Exchange Without Air Exchange

Scalability

In addition to providing access control, diesel generator, dust prevention, insect intrusion prevention, indoor/outdoor temperature and humidity detection, dust detection, power supply detection, and fresh air introduction functions, Beijing Raytrans has also reserved abundant switch, analog, and data interfaces to facilitate future business expansion. Based on future actual needs, smoke detection and water immersion detection can be added; photo capture functionality (JPEG) can also be added with real-time transmission; critical equipment rooms can support real-time monitoring. All the above data signals can be transmitted in real time, ensuring data timeliness and accuracy.

Technical Specifications

Ventilation Fan

Rated Voltage	AC220V	Input Power	85W
Frequency	50Hz	Rated Speed	2450r/min
Rated Current	0.35A	Airflow	1050m3/h
Air Pressure	120Pa	Noise	56dB

Heat Pipe Heat Exchange Unit

Model	Nominal Heat Output	Installation Type	Dimensions (mm)
			H (Height)	D (Depth)	W (Width)
2K	2kW	Ceiling-mounted	400	800	1250
		Floor-standing	1250	300	800
4K	4kW	Ceiling-mounted	500	1200	1300
		Floor-standing	1300	450	1200

Temperature and Humidity Sensor

Humidity Accuracy	± 3%RH (5%RH～95%RH, 25℃)	Power Supply	DC 24V
Temperature	± 0.5℃ (0℃～50℃)	Operating Temperature	-10℃～60℃
Long-term Stability	Humidity <1%RH/y; Temperature <0.1℃/y	Response Time	<15s (at 1m/s air velocity)

Voltage Transmitter

Nominal Input	250V	Load Capacity	5mA/6V
Nominal Output	1～5V	Temperature Drift	100 PPM/℃
Accuracy Class	0.2	Power Supply	+24V
Response Time	150ms	Operating Temperature	-10℃～50℃

Current Transmitter

Nominal Input	5A	Load Capacity	5mA/6V
Nominal Output	4～20mA	Temperature Drift	150 PPM/℃
Accuracy Class	0.2	Power Supply	+24V
Response Time	150ms	Operating Temperature	-10℃～60℃

Dust Detector

Input Voltage	5V±10%	Operating Temperature/Humidity	-10℃-45℃, 95%RH
Current Consumption	90mA Max	Detectable Particle Diameter	1 micron

Dust Filtration Device

Filter Material	Activated carbon sponge	Sponge Thickness	10mm
Sponge Dimensions	100mm*100mm	Filter Pore Size	35ppi

Application Cases

The intelligent ventilation energy-saving system and heat exchange energy-saving system are suitable for tier-2 and tier-3 telecommunications equipment rooms of China Mobile, China Unicom, China Telecom, China Netcom, China Tietong, as well as other professional telecommunications equipment rooms. The greater the surplus capacity of the air conditioning system and the better the sealing performance of the equipment room, the higher the energy-saving rate of the system. Furthermore, the energy-saving ventilation system not only conserves energy but also utilizes its switching function to alternate air conditioning units, significantly extending their service life and reducing maintenance costs. It can also be integrated into the power and environment monitoring network, ensuring real-time monitoring of the air conditioning and ventilation units in the central equipment room, thereby enhancing the reliability and safety of equipment operation.

This system has been installed and tested at multiple pilot sites, featuring simple installation and construction, as well as high safety and reliability. For example, at mobile base stations in Northeast China: leveraging the region's long winter season, a local operator's equipment room installed the intelligent ventilation energy-saving system. During winter, outdoor cold air is used as the cooling source. When the outdoor air temperature drops below the indoor temperature by a certain margin, the system employs corresponding technical means to exchange heat between the outdoor fresh air and the indoor air, dissipating the heat from the equipment room and thereby lowering its temperature. This reduces the operating time of air conditioning units, achieving electricity savings. Compared with the same period last year, the system consumes only 30% of the original air conditioning power consumption, greatly reducing operation and maintenance costs while also saving a substantial amount on electricity bills.

At a China Unicom base station in a southern province: based on the region's climatic characteristics, the heat exchange energy-saving system delivers its powerful energy-saving performance from March to June and from October to November. When the outdoor temperature is below 26℃, the system can fully control the air conditioning system, halting its operation and maintaining the indoor temperature below 30℃. The system's energy consumption is only 1% to 5% of that of the air conditioning system, demonstrating remarkably significant energy-saving results. During the high-temperature period from July to September, the system can shut down the air conditioning units at night when the outdoor temperature drops below 28℃, thereby achieving energy savings and extending the service life of the air conditioners. According to statistics, the system can save 40% to 60% of the equipment room's air conditioning energy consumption on an annual basis.

Given the remarkable effectiveness of this energy-saving system, it breaks away from the traditional RS485/232 data transmission methods used in base station monitoring, utilizing the convenient and high-speed IP network for real-time transmission of collected data, offering significant advantages over existing energy-saving monitoring solutions. In addition, the system adopts a base station equipment room model-based control method, accurately and efficiently calculating the critical temperature and humidity thresholds for air conditioning start/stop, optimizing energy-saving control to the fullest extent, minimizing power consumption and maintenance costs, and enhancing the competitiveness of telecommunications enterprises. Therefore, based on the successful pilot trials, Beijing Raytrans Company will intensify its efforts to promote the system nationwide, particularly within the operation and maintenance systems of China Mobile and China Unicom, assisting operators in reducing maintenance costs, saving electricity, and increasing profitability.