Temperature compensated combustible gas detecting and alarming system based on alarming protection

A gas detection alarm, temperature compensation technology, applied in alarms, emergency protection circuit devices for limiting overcurrent/overvoltage, emergency protection circuit devices, etc., can solve the problem of high malfunction rate and eliminate surge voltage , the effect of high sensitivity

Inactive Publication Date: 2018-02-27
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 misoperation rate of the existing gas alarm system, and provide a temperature compensation combustible gas detection and alarm system based on alarm protection

Method used

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  • Temperature compensated combustible gas detecting and alarming system based on alarming protection
  • Temperature compensated combustible gas detecting and alarming system based on alarming protection

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Experimental program
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Embodiment

[0017] like figure 1 As shown, the present invention mainly consists of control chip U3, triode VT1, gas sensor Q, potentiometer R3, resistor R4, resistor R5, resistor R6, thermistor R7, resistor R8, resistor R9, capacitor C5, capacitor C6, capacitor C7, diode D3, diode D4, diode D5, diode D6, diode D7, alarm BL, surge protection circuit and power supply circuit.

[0018] The P pole of the diode D7 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 D6 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 R9. The anode of the capacitor C7 is connected to the 1A pin of the control chip U3, and the cathode is connected to the emitter of the triode VT1. The N pole of the diode D5 is connected to the VSS pin of the control chip U3, and the P pole is connected to the anode of the capacitor C7. Resistor R8 is conn...

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Abstract

The invention discloses a temperature-compensated combustible gas detection and alarm system based on alarm protection, which is characterized in that it is mainly composed of a control chip U3, a triode VT1, a gas sensor Q, and a P pole connected to the 2Y pin of the control chip U3, The N pole is composed of a diode D7 connected to the base of the triode VT1, etc. 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.

Description

technical field [0001] The invention relates to an alarm system, in particular to a temperature compensation combustible gas detection and alarm system based on alarm 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. SUMMARY OF THE INVENTION ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/16G08B29/24H02H9/00H02H9/04H02H3/20
CPCG08B21/16G08B29/24H02H3/202H02H9/005H02H9/045
Inventor 周云扬
Owner CHENGDU CHUANGTU TECH
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