CN105336121A - Harmful gas monitor - Google Patents
Harmful gas monitor Download PDFInfo
- Publication number
- CN105336121A CN105336121A CN201410392676.XA CN201410392676A CN105336121A CN 105336121 A CN105336121 A CN 105336121A CN 201410392676 A CN201410392676 A CN 201410392676A CN 105336121 A CN105336121 A CN 105336121A
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- China
- Prior art keywords
- sensor
- module
- control module
- signal conversion
- harmful gas
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention discloses a harmful gas monitor. The harmful gas monitor is characterized in that a power supply module is successively connected with a sensor, a signal conversion module and a control module, the output end of the control module is connected with a display module, an LED, a buzzer and a fan, the sensor is a QM-N5 type semiconductor gas sensitive sensor, the signal conversion module uses ADC0832, and the control module includes an AT89S52 single-chip microcomputer. The sensor is used for signal collection, the signal conversion module implements digital to analog conversion, and signals are analyzed by the single-chip microcomputer; the LED, the buzzer and the fan can be used selectively, operate simultaneously, but may not work simultaneously; and according to different concentration of the external gas, different information is displayed, corresponding measures are adopted, different functions are started, real-time monitoring is realized, and real-time feedback and protection are achieved.
Description
Technical field
The present invention relates to a kind of harmful gas supervising device.
Background technology
Along with society to the requirement of the energy to development that is clean and energy saving direction, the energy in Modern Family kitchen is all coal gas or rock gas mostly, and these two kinds of gases not only itself are pernicious to people, and once reveals and very easily blast.And in the winter time, much do not have the family of heating installation that honeycomb briquette stove or carbon stove can be adopted to warm oneself, the carbon monoxide in air is excessive will threaten personal safety, so in real time the detection of these gas contents in environment is just seemed particularly important.
Summary of the invention
For solving above-mentioned existing shortcoming, fundamental purpose of the present invention is the harmful gas supervising device providing a kind of practicality, can monitor the harmful gas in air and report to the police.
For reaching above-described object, following technical scheme taked by a kind of harmful gas supervising device of the present invention:
A kind of harmful gas supervising device, it is characterized in that, power module is connected with sensor, signal conversion module and control module in turn, the output terminal of described control module is connected to display module, light emitting diode, hummer and fan, described sensor adopts QM-N5 type semiconductor gas sensor, described signal conversion module adopts ADC0832, and described control module adopts AT89S52 single-chip microcomputer.
Adopt the present invention of as above technical scheme, there is following beneficial effect:
Sensor of the present invention is as signals collecting, and signal conversion module carries out digital-to-analog conversion, and analyzing light emitting diode, hummer and fan for single-chip microcomputer can choice for use, runs simultaneously, but not necessarily works simultaneously.According to extraneous gas with various concentration, show different information, and take corresponding measure, start difference in functionality, reach real-time monitoring, the object that Real-time Feedback is also protected.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
In figure, 1 power module, 2 sensors, 3 signal conversion module, 4 control modules, 5 display modules, 6 light emitting diodes, 7 hummers, 8 fans.
Embodiment
In order to further illustrate the present invention, be described further below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of circuit structure of the present invention, power module 1 is connected with sensor 2, signal conversion module 3 and control module 4 in turn, and the output terminal of control module 4 is connected to display module 5, light emitting diode 6, hummer 7 and fan 8.
Sensor 2 of the present invention as signals collecting, use type semiconductor gas sensor, highly sensitive, applied widely.Signal conversion module 3 adopts ADC0832, carries out digital-to-analog conversion, for single-chip microcomputer analysis.Control module 4 adopts AT89S52 single-chip microcomputer.Light emitting diode 6, hummer 7 and fan 8 can choice for uses, run simultaneously, but not necessarily work simultaneously.According to extraneous gas with various concentration, the different letter of display, and take corresponding measure, start different object.
In the present invention, QM-N5 type semiconductor gas sensor (sensor 2) is with metal oxide SnO
2for the N-type semiconductor gas sensor of material of main part, when element contact reducibility gas, its conductivity raises rapidly with the increase of gas concentration.The resistance of two detecting electrodes of sensor 2 can environmentally in the concentration of tested gas sharply reduce, thus cause its output terminal output voltage sharply to increase, then the voltage increased is passed to signal conversion module 3-ADC0832, digital quantity is converted into by AD, pass to single-chip microcomputer again by single-chip microcomputer according to different AD values, control the level height of operating circuit, thus realize the control to operating circuit.Wherein, 12V hummer 7 and fan 8 carry out two-stage amplification by single-chip microcomputer conducting two large power triodes, thus conducting 12V voltage, make its work.Light emitting diode 6 is directly by Micro Controller Unit (MCU) driving.
The present invention can be real-time testing environment in CH
4, C
4h
10., H
2, the flammable explosive gas such as CO content, and point out its concentration range, note to point out people, and the dangerous concentrations reaching setting when these gases is, instrument meeting automatic alarm, opens scavenger fan simultaneously or smoke exhaust ventilator is exhausted, in addition, display module also can show dangerous prompting, and what prompting should do.Application place is that kitchen, bedroom, colliery etc. can contain CH
4, C
4h
10., H
2, the inflammable and explosive or toxic gas such as CO place.
Claims (1)
1. a harmful gas supervising device, it is characterized in that, power module is connected with sensor, signal conversion module and control module in turn, the output terminal of described control module is connected to display module, light emitting diode, hummer and fan, described sensor adopts QM-N5 type semiconductor gas sensor, described signal conversion module adopts ADC0832, and described control module adopts AT89S52 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410392676.XA CN105336121A (en) | 2014-08-12 | 2014-08-12 | Harmful gas monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410392676.XA CN105336121A (en) | 2014-08-12 | 2014-08-12 | Harmful gas monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105336121A true CN105336121A (en) | 2016-02-17 |
Family
ID=55286617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410392676.XA Withdrawn CN105336121A (en) | 2014-08-12 | 2014-08-12 | Harmful gas monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105336121A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109313838A (en) * | 2016-02-26 | 2019-02-05 | 霍尼韦尔国际公司 | For detecting the detector of multiple gases |
-
2014
- 2014-08-12 CN CN201410392676.XA patent/CN105336121A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109313838A (en) * | 2016-02-26 | 2019-02-05 | 霍尼韦尔国际公司 | For detecting the detector of multiple gases |
| US10847011B2 (en) | 2016-02-26 | 2020-11-24 | Honeywell International Inc. | Gas detector for detecting multiple gases |
| CN109313838B (en) * | 2016-02-26 | 2021-08-20 | 霍尼韦尔国际公司 | Only with warning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160217 |