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one.Technical characteristics
1. The alarm signal output by the cable disconnection sensor is not affected by the interference information of the power grid, will not produce false reports and omissions, and is stable and reliable. The technology is applying for a patent
2. There is no need to apply and pay for the frequency of wireless communication, the transmission power is small, and the communication distance is about 1 km in the open area.
3. The wireless communication machine adopts imported industrial-grade chips, the chip adopts all-digital modulation and demodulation technology, high-precision crystal phase-locking and frequency stabilization, small size, high reliability, plus error correction coding and wireless automatic with independent intellectual property rights Networking technology (with 5 patented technologies), to ensure that wireless communication devices do not interfere with each other, and the communication is stable and reliable.
4. With waterproof design, it can be used in harsh environments
two.System composition
The system consists of two parts: (1) Cable disconnection sensor; (2) Wireless communication machine
The cable disconnection sensor consists of a main control device and several (up to eight) end devices. The main control device is installed in the street light distribution cabinet, and the end device is installed in the pole at the end of the street light. Any street light cable is cut off. , The cable disconnection sensor will output an alarm signal immediately.
A main control device and several terminal devices constitute a subsystem, and several subsystems constitute the entire system.
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System General Diagram
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Main control device
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End device
three. working principle:
When a street light cable is artificially cut, as shown in the system diagram, assuming that the No. 2 street light wire is cut, the cable disconnection sensor installed at the end of the No. 2 street light wire immediately outputs an alarm signal to the wireless communication device, and the wireless communication device immediately sends an alarm signal to The wireless receiver in the street light distribution cabinet box, and then the alarm signal is forwarded by the private network or public network to the street light control center or the mobile phone of the person on duty, reporting that the No. 2 street light line of the XX section has been cut
Shanghai Zhaofu Communication Technology Co., Ltd.
Dong Jun:13482884948
021-51822510-14
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