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one.Technical Features
1. The alarm signal output by the cable disconnection sensor is not affected by the interference information of the power grid, and will not produce false alarms and omissions. It is stable and reliable. The technology is applying for a patent.
2. There is no need to apply and pay for the use 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 chip, which adopts all-digital modulation and demodulation technology, high-precision crystal phase-locking and frequency stabilization, small size, high reliability, plus error-correcting coding and wireless automatic with independent intellectual property rights. The networking technology (with 5 patented technologies) ensures that the wireless communication machines 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 break 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 box, and the end device is installed in the utility pole at the end of the street light. Any street light cable is cut off , the cable break sensor will output an alarm signal immediately.
A main control device and several end devices form a subsystem, and several subsystems form the whole system.
System overview
Main control device End device
three. working principle:
When a street light cable is artificially cut off, as shown in the general diagram of the system, it is assumed that the No. 2 street light line is cut off, the cable disconnection sensor installed at the end of the No. 2 street light line immediately outputs an alarm signal to the wireless communication machine, and the wireless communication machine immediately sends an alarm signal to the The wireless receiver in the streetlight distribution cabinet box, and then the alarm signal is forwarded by the private network or public network to the streetlight control center or the mobile phone of the person on duty, reporting that the No. 2 streetlight line in the XX section is cut.
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