(B) Feasibility: The system used for power cable installation work in modern times should be feasible for management to meet a wide range of management requirements.
(3) Reliability: Strengthen the reliability of the detector and reduce the false alarm rate of the system.
(IV) Advancement: It can effectively distinguish whether an alarm is needed or not. The PLC has the function of monitoring and alarming under normal power supply and can perform perfect monitoring of abnormal conditions on the line.
(5) Security: The intelligent function of the main controller has been effectively expanded, its anti-theft function has been strengthened, and the cable anti-theft system has been further improved.
(6) Scalability: The system can be used as an extension of an alternate excuse to use a company*s alarm monitoring system to improve the security level of the system. If the loop circuit is longer, it can be used to add signals in the middle of the line. Subsequent methods will effectively extend the monitoring distance and guarantee the monitoring effect, reduce the phenomenon of system omission and misstatement, and improve the reliability of its monitoring and security work.
Second, the technical brief <br> <br> power line carrier communication technology that is PLC technology, which is currently used widely as the best prospect of communications technology has gradually with wireless communications, wired communications go hand in hand. Compared with the traditional communication method, PLC technology requires no wiring, and it only needs to use the existing power line as its medium for communication, and the project implementation is faster. Through extensive experiments and practical comparisons, the BWP10 in the PLC technology module is relatively mature in terms of technology and application, and has stable performance. It has the characteristics of small size, high integration, and wide application. The module realizes the transparency of serial port data transmission. Reduced the difficulty of use, to facilitate the user. It adopts modulation and decoding technology and can update and update its operating parameters through software.
Third, the principle of anti-theft <br> <br> monitoring system currently used in anti-theft system cable road camera principle employed is substantially power line carrier technology, communication technology for transmitting and receiving apparatus provided by the cable head end, using a signal The situation of transmission monitors the cable, and the head end device transmits the signal, and the end device receives it. If the carrier signal disappears and the disappearing time is longer than the set time of the delay, the monitoring system determines that the cable is abnormal and sends an alarm message; When the surveillance camera is operating, the system will also detect whether the cable of the camera is powered. If the cable is not powered in the cable of the camera at the top of the cloud, and the carrier signal disappears at the same time, the abnormality under the double judgment of the cable at the same time will be improved. The accuracy of system alerts.
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