High-voltage pulse signal acquisition technology

Abstract

The invention discloses a high-voltage pulse signal acquisition technology, belongs to the technical field of security alarm, and particularly relates to a design and manufacturing method of a capacitor, the voltage and energy of a high-voltage pulse signal are reduced, the high-voltage pulse signal loses destructive power to electronic components, and meanwhile, the capacitor is completely resistant to high voltage.

Description

1. Technical Field:

[0001] The high-voltage pulse signal is emitted by the host of the pulse electronic fence system. The pulse electronic fence is a type of perimeter alarm system and the first line of defense in the security system. It has three functions: deterrence, blocking, and alarming. It is installed around villas, perimeters, warehouses, military facilities, airports, factories, etc. to prevent intrusion. 2. Background Art:

[0002] Since 2000, pulse electronic fences have started to appear on the domestic market. As a perimeter alarm system, the pulse electronic fence consists of three parts: a pulse host, a front-end detection fence, and the transmission and display of alarm signals. The pulse host generates a pulsed high voltage to supply the front-end detection fence circuit, detect intruders, and can emit alarm signals.

[0003] The high-voltage pulse signal returns to the host through dozens to hundreds of meters of bare metal wires of the electronic fence. At this time, technical means are required to collect the transmitted high-voltage pulse signal. Since the high-voltage pulse signal has a certain amount of energy, ordinary electronic components are generally difficult to withstand the impact or long-term impact. For example, a common resistor of 1 / 2 watt and several hundred ohms will burn out instantly, and a glass glaze resistor of 10 watts and 1000 ohms will also often blow. Moreover, too high a resistance also affects the output voltage of the electronic fence. However, the traditional method is to intercept with a high-voltage resistor, and the system is very unstable. 3. Summary of the Invention:

[0004] The high-voltage pulse on the electronic fence is stepped down and isolated through a capacitive isolation plate, and then sent into the single-chip microcomputer A / D converter through a low-voltage shaping and voltage-limiting detection circuit to detect the intrusion short circuit and open circuit of the electronic fence, and then an audible and visual alarm is issued and sent to the upper computer through a network interface. 4. Description of the Drawings:

[0005] Figure 1 It is the schematic diagram of the high-voltage pulse signal acquisition technology.

[0006] Figure 2 It is the high-voltage side of the high-voltage pulse capacitive induction plate.

[0007] Figure 3 It is the low-voltage side of the high-voltage pulse capacitive induction plate. 5. Specific Implementation Method:

[0009] 5.1 The high-voltage pulse is boosted to 4500V through a high-voltage isolation transformer and transmitted to the alloy wire of the electronic fence. As a result, the alloy wire returns to the high-voltage pulse host again. After being isolated by the capacitive induction plate, a low-voltage pulse signal is obtained. See Figure 2 and Figure 3 .

[0010] 5.2 The low-voltage induction signal obtained after being isolated by the capacitive plate induction is then sent to the A / D converter of the single-chip microcomputer through the pulse shaping and voltage limiting circuit for signal processing. The intrusion short-circuit and open-circuit signals of the electronic fence are sent to the upper computer in the monitoring room through the sound and light alarm on the one hand and through the network interface on the other hand.

Claims

1. A high-voltage pulse signal acquisition technology that cleverly uses the principle of capacitive induction to receive high-voltage pulse signals with a metal sheet of a certain area and sense them on another metal plate that is insulated from it. At this time, the high-voltage pulse signal has no destructive power on electronic components, which can well protect the components on the subsequent circuits and increase system stability.

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