Front-end fence using line terminator and electronic impulse detector using front-end fence

Abstract

The invention relates to a front-end fence, in particular to a front-end fence using a line terminator and an electronic impulse detector using the front-end fence. The front-end fence comprises a high voltage detection line which is connected in series with an electronic line terminator; and the electronic impulse detector comprises the front-end fence and an electronic fence host, wherein the electronic fence host comprises a high-voltage rectifier filter circuit and a microcontroller for judging the output signals of the high-voltage rectifier filter circuit, the high-voltage rectifier filter circuit comprises at least two input ends and an output end, the input end is connected with the front-end fence which is connected in series with the electronic line terminator, and the output ends are both connected with the microcontroller. Through the structure of the front-end fence in the invention, the number of host terminals is reduced, thereby simplifying the structure of the host; high voltage and other potential problems existing in 6-wire (or above) electronic fences are solved; and the difficult problem of alarm failure caused by illegal bypass is also solved.

Description

technical field [0001] The invention relates to a front fence and an electronic pulse detector, in particular to a front fence using a line terminator and an electronic pulse detector using the same. technical background [0002] The electronic fence is currently the most advanced perimeter anti-theft alarm system, which consists of a high-voltage electronic pulse host and a front-end detection fence. The high-voltage electronic pulse host generates and receives high-voltage pulse signals, and can generate alarm signals when the front-end detection fence is in the state of touching the net, short circuit, or open circuit, and sends the intrusion signal to the security alarm center; the front-end detection fence is composed of poles and metal wires, etc. The physical perimeter of components. The electronic fence is an active intrusion anti-surpassing fence, which counters the intrusion attempt, repels the intruder, delays the intrusion time, and does not threaten human life,...

AI Technical Summary

Problems solved by technology

[0005] 1. There are many wiring terminals on the host, and at least 4 wiring terminals are required

[0006] 2. The 6-wire system cannot guarantee the pressure difference between two adjacent wires, such as figure 1 As shown, the high-voltage detection lines 1 and 2 are equipotential

When the thief short-circuits the detection line along the dotted line, cut off the outer branch detection high-voltage line at the X-shaped position of the front-end fence of the detection, then the high-voltage detection line can cross the fence and ensure the normal passage of the front-end fence, that is, the output pulse signal returns to the detection input through the short-circuited circuit. The detection end cannot know that the detection high-voltage line has been cut off, so the electronic fence loses its alarm function

Images