Detection method of heartbeat detection electronic fence sensor system
A technology of electronic fence and detection method, which is applied in the direction of alarms and anti-theft alarm mechanical start-ups based on broken/disturbed straightened ropes/metal wires, which can solve problems such as damage alarms and electronic fence intrusions, and achieve low cost. Wide range of applications and reasonable design effects
Inactive Publication Date: 2011-12-14
ZHEJIANG JITI ELECTRIC TECH
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[0004] In order to overcome the above-mentioned deficiencies, the object of the present invention is to provide a detection method of a heartbeat detection electronic fence sensor system in the art, so that it can solve the technical problem of the existing electronic fence due to malicious intrusion and destruction of illegal persons.
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[0018] The embodiment further describes the working principle of the present invention with reference to the accompanying drawings. The processor system of the system adopts the LPC2132 processor, the signal transmitting module, the signal receiving module and the LPC2132 processor are integrated in the processor system, and the processor system comes with a modulation signal processor. The SignalSend of the modulation signal processor is used as the PWM output terminal, and the SignalRecv of the LPC2132 processor is used as the PWM capture terminal. When the LPC2132 processor triggers the modulation signal processor to output PWM, the LPC2132 processor starts the PWM capture terminal and the frequency counter. The LPC2132 processor of the processor system performs frequency analysis on the signal transmitted by SignalSend and the signal fed back by SignalRecv. Such as figure 2 As shown, according to the signal waveforms on SignalSend of the signal transmitting module and S...
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The invention relates to an alarm system, which is a detection method of a heartbeat type electronic fence sensor system, and is designed for solving the technical problem that the existing electronic fence is alarmed due to malicious intrusion and damage by illegal persons. The processor system of the system is connected with the signal transmitting module and the signal receiving module, the signal transmitting module is connected with the electronic fence, and the signal receiving module is connected with the electronic fence. The main point of the detection method is that the signal transmitting module of the processor system transmits a pulse width modulation frequency signal of 50Hz to 10kHz frequency to the electronic fence through the modulation signal processor; the LPC2132 processor of the processor system transmits the signal transmitted by the signal transmitting Frequency analysis is performed on the signal fed back by the signal receiving end to judge whether the electronic fence is working normally. The system is reasonable in design, simple in structure, low in cost, and has a wide range of applications, and is suitable for places requiring alarm systems.
Description
technical field [0001] The invention relates to an electronic fence alarm system, which is a detection method for a heartbeat type detection electronic fence sensor system. Background technique [0002] At present, the electronic fence generally uses the pulse generator (host) to send pulse voltage to the electronic fence after the transmitting port is powered on. The time interval is about 1.5 seconds to transmit once, and the pulse stays on the electronic fence for about 0.1 seconds. After the circuit is formed on the electronic fence Send the pulse back to the receiving port of the host, and this port receives the pulse signal fed back; at the same time, the host will also detect the resistance value between the two transmitting ends. The electronic fence is an intelligent perimeter system composed of a pulse generator (host) and an electronic fence. If the electronic fence is damaged and causes open circuit or short circuit, the receiving port of the pulse host cannot r...
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IPC IPC(8): G08B13/12
Inventor 赵飞沈坚
Owner ZHEJIANG JITI ELECTRIC TECH