CN102445526A - Portable gas detection alarm device - Google Patents
Portable gas detection alarm device Download PDFInfo
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- CN102445526A CN102445526A CN2010105079596A CN201010507959A CN102445526A CN 102445526 A CN102445526 A CN 102445526A CN 2010105079596 A CN2010105079596 A CN 2010105079596A CN 201010507959 A CN201010507959 A CN 201010507959A CN 102445526 A CN102445526 A CN 102445526A
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Abstract
The invention discloses a portable gas detection alarm device, and relates to a novel portable gas detection alarm device controlled by a singlechip. The portable gas detection alarm device disclosed by the invention is capable of collecting and displaying the current gas concentration value of an area in which the alarm device is located, making a corresponding alarm decision and effectively preventing safety accidents caused by gas combustion or explosion. The portable gas detection alarm device disclosed by the invention comprises the following functional modules: a microprocessor A Tme-gal 128 L, a sensor acquisition circuit, a signal amplification circuit, an intermittent control module and the like. The low-precision measurement mode of the intermittent power supply of a gas sensor is adopted, and the intermittent time is controlled by the singlechip; a direct voltage output signal which is in direct proportion to gas concentration and is generated by a detection bridge is sent to the analog/digital (A/D) conversion port of a microprocessor after being subsequently amplified to perform nonlinear compensation on a detected concentration value so as to accurately detect the true value of the current gas concentration.
Description
Technical field:
Portable gas explosion detection alarm device relates to a kind of by monolithic processor controlled novel portable gas-warning device.
Background technology:
Gas explosion is a great hidden of mining industry development.China is as one of maximum in the world coal production and country of consumption, and the safety problem of mining industry is the focus of social concerns all the time, and miners' safety is affecting huge numbers of families' the heart, and the report of relevant mine disaster happens occasionally.According to statistics, gas density is lower than burning in 4% o'clock blast in 4%～16% o'clock, neither burns greater than 16% o'clock and does not also explode; Therefore, the accurate detection of gas density just becomes and prevents that effectively this concentration of invar from transfiniting and cause that gas explosion causes the key issue of mine disaster.In order to guarantee underground work person's life security, make their safe escape explosive area before mine disaster takes place, people have used the method and the monitoring instrument of multiple monitoring gas density.The external firedamp sensor that adopts the nanometer technology development has that working current is little, the life-span is long, and can detect multiple gases, but costs an arm and a leg, and is improving in the process at present, does not promote the use of as yet.
Summary of the invention:
The present invention is exactly to the problems referred to above, and is provided a kind of service time that prolongs after the power source charges, reduces the power source charges frequency, improves the portable gas explosion detection alarm device in the serviceable life of alarm.
For realizing above purpose; The present invention adopts following technical scheme; The present invention mainly is made up of functional modules such as microprocessor A Tme-gal 128L, sensor acquisition circuit, signal amplification circuit, controls at intermittence; Adopt the low precision measure pattern of firedamp sensor intermittent power supply, the quiescent interval is detected the DC voltage output signal that is proportional to gas density of electric bridge generation and is delivered to microprocessor A/D conversion port through follow-up amplification by Single-chip Controlling; The detectable concentration value is carried out nonlinear compensation, to reach accurate detection to current gas density actual value.
Beneficial effect of the present invention:
Can in time gather the current gas concentration with the displaying alarm region, and make corresponding warning decision, can effectively prevent the security incident that gas combustion or blast cause.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 system architecture diagram.
Fig. 2 main program flow chart.
Embodiment
The present invention mainly is made up of functional modules such as microprocessor A Tme-gal 128L, sensor acquisition circuit, signal amplification circuit, controls at intermittence; Device compares the gas concentration of firedamp sensor collection and the alarming value that is provided with in advance; When detected value reaches the alarm set point that pre-sets; Start buzzer warning, and the flicker alarm lamp is so that take measures in time to prevent that the serious accident of gas explosion from taking place.
Adopt the low precision measure pattern of firedamp sensor intermittent power supply; Quiescent interval is by Single-chip Controlling; Detect the DC voltage output signal that is proportional to gas density of electric bridge generation and deliver to microprocessor A/D conversion port through follow-up amplification; The detectable concentration value is carried out nonlinear compensation, to reach accurate detection to current gas density actual value.
Microprocessor can be through button to initialization such as corresponding software interruption, timer initial values; The instantaneous value that the gas sensor transmits is up read in the master routine circulation after the initialization; Carry out the selection of mode of operation according to the numerical value that is read; And the size of more current in real time gas density and preset alarm set point gas concentration; When gas density transfinites, in time export comparative result, start sound and light alarm simultaneously.
Claims (3)
1. portable gas explosion detection alarm device; Form by functional modules such as microprocessor A Tme-gal 128L, sensor acquisition circuit, signal amplification circuit, controls at intermittence; It is characterized in that device compares the gas concentration of firedamp sensor collection and the alarming value that is provided with in advance; When detected value reaches the alarm set point that pre-sets, start buzzer warning, and the flicker alarm lamp is so that take measures in time to prevent that the serious accident of gas explosion from taking place.
2. portable gas explosion detection alarm device according to claim 1; It is characterized in that adopting the low precision measure pattern of firedamp sensor intermittent power supply; Quiescent interval is by Single-chip Controlling; Detect the DC voltage output signal that is proportional to gas density of electric bridge generation and deliver to microprocessor A/D conversion port, the detectable concentration value is carried out nonlinear compensation, to reach accurate detection to current gas density actual value through follow-up amplification.
3. portable gas explosion detection alarm device according to claim 1 is characterized in that microprocessor can be through button to initialization such as corresponding software interruption, timer initial values; The instantaneous value that the gas sensor transmits is up read in the master routine circulation after the initialization; Carry out the selection of mode of operation according to the numerical value that is read; And the size of more current in real time gas density and preset alarm set point gas concentration; When gas density transfinites, in time export comparative result, start sound and light alarm simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105079596A CN102445526A (en) | 2010-10-15 | 2010-10-15 | Portable gas detection alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105079596A CN102445526A (en) | 2010-10-15 | 2010-10-15 | Portable gas detection alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102445526A true CN102445526A (en) | 2012-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105079596A Pending CN102445526A (en) | 2010-10-15 | 2010-10-15 | Portable gas detection alarm device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102445526A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720540A (en) * | 2012-07-02 | 2012-10-10 | 天地科技股份有限公司 | Roof disaster monitoring system |
| CN102797501A (en) * | 2012-08-07 | 2012-11-28 | 哈尔滨东方报警设备开发有限公司 | Wireless portable gas detection alarm control method |
| CN103018281A (en) * | 2012-12-07 | 2013-04-03 | 辽宁工程技术大学 | Intelligent gas disaster early-warning and detecting device and method for mine |
| CN105259327A (en) * | 2015-09-23 | 2016-01-20 | 浙江省安全生产科学研究院 | Combustible gas detector and detection method thereof |
| CN114033977A (en) * | 2021-12-02 | 2022-02-11 | 深圳市源立信照明科技有限公司 | Flashlight circuit with oxygen content measurement function, control method thereof and flashlight |
-
2010
- 2010-10-15 CN CN2010105079596A patent/CN102445526A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720540A (en) * | 2012-07-02 | 2012-10-10 | 天地科技股份有限公司 | Roof disaster monitoring system |
| CN102720540B (en) * | 2012-07-02 | 2015-02-18 | 天地科技股份有限公司 | Roof disaster monitoring system |
| CN102797501A (en) * | 2012-08-07 | 2012-11-28 | 哈尔滨东方报警设备开发有限公司 | Wireless portable gas detection alarm control method |
| CN103018281A (en) * | 2012-12-07 | 2013-04-03 | 辽宁工程技术大学 | Intelligent gas disaster early-warning and detecting device and method for mine |
| CN105259327A (en) * | 2015-09-23 | 2016-01-20 | 浙江省安全生产科学研究院 | Combustible gas detector and detection method thereof |
| CN114033977A (en) * | 2021-12-02 | 2022-02-11 | 深圳市源立信照明科技有限公司 | Flashlight circuit with oxygen content measurement function, control method thereof and flashlight |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Chenglong Document name: Notification of Publication of the Application for Invention |
|
| DD01 | Delivery of document by public notice |
Addressee: Li Chenglong Document name: Notification of before Expiration of Request of Examination as to Substance |
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| DD01 | Delivery of document by public notice |
Addressee: Li Chenglong Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120509 |