NB-IoT-based cable anti-theft system and alarm method thereof

Abstract

The invention discloses a NB-IoT-based cable anti-theft system. The system comprises a direct current unit for providing direct current when a cable has no alternating current, and further comprises an alternating current detector, a driver and a direct current generator which are connected in sequence, and the direct current output end of the direct current generator is connected with the cable;an anti-theft detection unit comprises a data collecting module, a single-chip microcomputer and a NB-IoT wireless communication module which are connected in sequence, the data collecting module collects alternating current or direct current in the cable and outputs the current to the single-chip microcomputer according to an output signal, and the signal-chip microcomputer judges whether the cable is stolen or not according to the received signal and sends the judgment result to a cloud platform alarm unit through the NB-IoT wireless communication module; the cloud platform alarm unit is used for receiving the judgment result of the anti-theft detection unit, and if the cable is stolen, an alarm is started. By arranging the direct current module, anti-theft detection can also be achievedwhen the cable is not powered on, and the probability that the cable is stolen is lowered; the NB-IoT module replaces a traditional GPRS communication module, coverage is large, power consumption islow, and communication is stable.

Description

technical field [0001] The invention relates to an NB-IoT-based cable anti-theft system and an alarm method thereof, belonging to the technical field of cable anti-theft. Background technique [0002] The safety of power facilities, especially cables, is the basis for the safe operation of power grid enterprises. [0003] Cables can be divided into power cables, communication cables and control cables according to their uses. Compared with overhead lines, the advantages of cables are that the insulation distance between lines is small, the space occupied is small, the space above the ground is not occupied by laying underground, it is not affected by the pollution of the surrounding environment, the reliability of power transmission is high, and it does not interfere with personal safety and the surrounding environment small. Therefore, it is very suitable for use in densely populated and grid-intensive areas and places with heavy traffic; cables are also often used in pla...

AI Technical Summary

Problems solved by technology

[0004] The cable is mainly composed of four parts, namely the conductive core, the insulating layer, the sealing sheath and the protective covering layer. Among them, the conductive core is mostly made of copper core wire, and its market value has skyrocketed, so it attracts many criminals. Taking risks, stealing cables frantically, and causing power interruption due to stolen cables, this not only affects people's lives, but also causes great economic losses to the society. It also provides a favorable environment for criminals to commit crimes and brings a series of public security problems problems, and will threaten the life safety of pedestrians and thieves themselves

[0005] At present, there are mainly three types of anti-theft technologies applied to cables on the market: 1. Power carrier technology. Anti-theft devices are installed at both ends of the cable. The front end sends information to the back end and receives feedback signals to realize anti-theft detection. The load on the cable is unclear and false alarms occur; 2. Current acquisition technology, by connecting the current acquisition module on the cable, and judging whether the cable is stolen by the collected current, this detection will be due to the upper load of the cable ( 3. GPRS technology, connect an anti-theft device at the end of the cable, and set a GPRS communication module in the anti-theft device to detect the current in the cable in real time to achieve cable anti-theft detection; but there are The high power of the equipment leads to large battery capacity, short service life, and short standby time; at the same time, when it is installed inside the light pole, it is easy to cause unstable communication

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