Voltage following type combustible gas detection alarm system based on surge protection

A gas detection alarm and surge protection technology, which is applied to emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, alarms, etc., can solve the problem of high malfunction rate and eliminate surges Effects of voltage, voltage stabilization, and prevention of voltage fluctuations

Inactive Publication Date: 2018-03-06
CHENGDU CHUANGTU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defect of high malfunction rate of the existing gas alarm system, and provide a voltage-following combustible gas detection and alarm system based on surge protection

Method used

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  • Voltage following type combustible gas detection alarm system based on surge protection
  • Voltage following type combustible gas detection alarm system based on surge protection

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Experimental program
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Embodiment

[0016] Such as figure 1 As shown, the present invention mainly consists of control chip U3, triode VT1, gas sensor Q, amplifier P, potentiometer R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, capacitor C4, capacitor C5, capacitor C6, Diode D2, diode D3, diode D4, alarm BL, surge protection circuit and power supply circuit.

[0017] The P pole of the diode D4 is connected to the 2Y pin of the control chip U3, and the N pole is connected to the base of the transistor VT1. The N pole of the diode D3 is connected to the 2A pin of the control chip U3, and the P pole is connected to the 1Y pin of the control chip U3 through the resistor R6. The positive pole of the capacitor C6 is connected to the 1A pin of the control chip U3, and the negative pole is connected to the emitter of the triode VT1. The N pole of the diode D2 is connected to the VSS pin of the control chip U3, and the P pole is connected to the anode of the capacitor C6. Resistor R5 is connected...

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Abstract

The invention discloses a voltage-following combustible gas detection and alarm system based on surge protection, which is characterized in that it is mainly composed of a control chip U3, a triode VT1, an amplifier P, a gas sensor Q and the like. The present invention sends out an alarm sound when the concentration of combustible gas is too high, its sensitivity is high, and it can effectively play a warning role; meanwhile, the present invention can adjust the alarm threshold value according to different environments, so as to meet the needs of use in different environments. The invention can stabilize voltage, prevent voltage fluctuation and false alarm phenomenon.

Description

technical field [0001] The invention relates to an alarm system, in particular to a voltage-following combustible gas detection and alarm system based on surge protection. Background technique [0002] The popularization of gas has improved people's production efficiency and quality of life. However, in the process of using gas, accidents such as gas explosions and poisonings caused by gas leakage, exhaust gas and other reasons occur from time to time, which have brought serious threats to people's lives and property safety. Therefore, the safe use of gas has always been the top priority of the gas authority. The gas sensor can effectively detect the presence of the gas to be detected in the environment. It forms a detection and alarm system through an interface circuit. When a gas leak occurs, it can alarm in time to avoid accidents. However, the sensitivity of the existing gas alarm system is low, and it cannot play a good warning role. Contents of the invention [00...

Claims

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Application Information

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IPC IPC(8): G08B21/16H02H9/04
CPCG08B21/16H02H9/04
Inventor 周云扬
Owner CHENGDU CHUANGTU TECH
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