Audible and visual alarm for monitoring coal gas leakage

A sound and light alarm and gas leakage technology, applied in the electronic field, can solve the problem of only sound alarm and no light alarm in the alarm, and achieve the effect of stable work and a wide range of people.

Inactive Publication Date: 2017-02-22
GUANGXI UNIV
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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 provide an audible and visual alarm for gas leakage to solve the problem that the existing gas leakage alarm cannot work in a humid and harsh environment, and the alarm has only sound alarm and no light alarm

Method used

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  • Audible and visual alarm for monitoring coal gas leakage

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings.

[0011] Such as figure 1 As shown, the circuit of the gas leakage monitoring sound and light alarm of the present invention is constructed by gas sensor QM, 555 integrated circuit, and Y976 alarm integrated circuit. The negative pole of the 6V battery pack GB is grounded, and the positive pole is connected in series with the gas sensor after the switch SW Measuring pole A of QM, one end of resistors R1 and R2, pin 8 of 555 integrated circuit, the other end of resistor R1 is the hot wire pin f1 of gas sensor QM, the other end of resistor R2 is connected to one end of resistor R3 and 555 integrated circuit pin 7 of the gas sensor QM; the measuring pole B of the gas sensor QM is connected to one end of the adjustable resistor RP, and the adjustment terminal of the adjustable resistor RP is connected to pin 4 of the 555 integrated circuit, the hot wire pin f2 of the gas sen...

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PUM

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Abstract

The invention provides an audible and visual alarm for monitoring coal gas leakage. The circuit of the audible and visual alarm is constructed by adopting a gas sensor QM, a 555 integrated circuit and a Y976 alarm integrated circuit, the operating state of a free-running multivibrator formed by the 555 integrated circuit is controlled by the gas sensor QM, and the operating state of the Y976 alarm integrated circuit is controlled by the output of the free-running multivibrator. The audible and visual alarm for monitoring coal gas leakage can effectively monitor the concentration of coal gas in a wet and adverse environment, and once the concentration exceeds an alarm limit value, the alarm can simultaneously send out audible and visual alarm signals. Compared with a common alarm for monitoring coal gas leakage, the audible and visual alarm for monitoring coal gas leakage has a wider range of applicable consumers and relatively stable operation, thereby being an ideal coal gas leakage alarm.

Description

technical field [0001] The invention relates to an alarm, in particular to an audible and visual alarm for gas leakage monitoring, which belongs to the field of electronic technology. Background technique [0002] With the improvement of people's living standards, more and more families have begun to use piped gas as the basic fuel, which provides convenience for people's lives, but accidents of people being poisoned by gas leakage or explosions caused by gas leakage are also frequent. Happened, brought a serious threat to people's lives and property safety, so the safe use of gas has always been the top priority of the pipeline gas department. There are many types of gas leakage monitoring alarms on the market, but most of them use complicated single-chip microcomputer control circuits, which are not suitable for long-term use in humid and harsh environments such as bathrooms and kitchens. In addition, most of the gas leak alarms have only sound alarms at present. For the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G08B21/16
CPCG01N33/004G08B21/16
Inventor 韦祖旺梁婵何华光
Owner GUANGXI UNIV
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