CN2932381Y - A digital fuel gas detector - Google Patents
A digital fuel gas detector Download PDFInfo
- Publication number
- CN2932381Y CN2932381Y CN 200620021395 CN200620021395U CN2932381Y CN 2932381 Y CN2932381 Y CN 2932381Y CN 200620021395 CN200620021395 CN 200620021395 CN 200620021395 U CN200620021395 U CN 200620021395U CN 2932381 Y CN2932381 Y CN 2932381Y
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- CN
- China
- Prior art keywords
- circuit
- pin
- gas detector
- link
- control circuit
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a digital gas detector, comprising a power unit consisting of a rectifier filter circuit and a voltage regulator circuit, an alarm detecting circuit, a scaling circuit, a control circuit and an acousto-optic alarm circuit, wherein the power unit, the alarm detecting circuit and the scaling circuit are respectively connected with the control circuit, the outlet of the control circuit is connected with the driving control circuit and the acousto-optic alarm circuit. The utility model has a breakthrough compared with the prior circuit structure by utilizing advanced technique, employing MCU control and combining with software, thereby is capable of automatically providing alarm data which is exchanged to digital figures and deposited in the MCU, and overcoming influence to alarm data from human factors or vibrations. The utility model has a simple circuit structure, facilitated mass production, enhanced stability of the detector and effectively satisfying demands of customers.
Description
(1) technical field
The utility model relates to a kind of warning device, a kind of specifically family expenses combustible gas probe.
(2) background technology
Combustible gas has become the main energy sources of thousand families, ten thousand notes, and its use has also brought a lot of hazards when the life of giving people brings convenience.Because blast and intoxication accident that gas leakage causes are of common occurrence, the safety of serious harm people's lives and properties.In order to address this problem, existing multiple flammable gas alarm device is used widely.Fuel gas alarm generally is made up of sensor and control circuit, and when combustible gas leakage reached finite concentration, alarm just sent alerting signals such as sound, light, and the output control signal, cuts off source of the gas.
Present employed combustion gas detector can not have big difference on merit, similar on the circuit structure yet, promptly constitutes comparer with operational amplifier.Regulate the alarm set point timing signal with potentiometer, to gas sensor ventilation, rotational potentiometer makes its voltage reach critical conditions then, Here it is original scaling method.Here deposit a lot of problems in fact, one, the manual adjustments potentiometer deposits mistake, though voltage error is not very big, changes combustable gas concentration into and then be equivalent to hundreds of or thousands of PPM.Two, potentiometer is simple in structure, produces the accuracy that vibration then can influence voltage owing to produce or transport, and promptly influences alarm set point.
(3) summary of the invention
It is rational in infrastructure simple that same being of the present utility model provides, and can eliminate human factor or the vibration digital combustion gas detector to the influence of alarming value.
The purpose of this utility model is achieved in that it comprises the power supply unit that is made of current rectifying and wave filtering circuit and mu balanced circuit, it also comprises alarm detection circuit, Calibration Circuit, control circuit, sound light alarming circuit, power supply unit, alarm detection circuit, Calibration Circuit connect control circuit respectively, and the output of control circuit connects Drive and Control Circuit and sound light alarming circuit respectively.
The utility model can also comprise some architectural features like this:
Described current rectifying and wave filtering circuit is by transformer T
1, diode D
1, D
2, D
3, D
4, capacitor C
3, C
4Connect to form T
1The 1st pin respectively with D
1Positive pole, D
2Negative pole connect T
1The 2nd pin and D
3Positive pole, D
4Negative pole be connected.
Described mu balanced circuit is by stabilivolt U
2, capacitor C
2Form U
2The 3rd pin and C
2Positive pole connect.
Described alarm detection circuit is by gas sensor MQ
1, resistance R
9, R
10Form.MQ
1The 3rd pin link to each other R with the 5th pin
9With R
10Be connected, and then and MQ
1The 3rd pin link to each other.
Described Drive and Control Circuit is by resistance R
2, R
12,, capacitor C
6, diode D
5, triode Q
2Form R
2Receive Q
2Base stage, CK
1Connect solenoid valve, D
5With T
1The 4th pin link to each other, again with R
12Polyphone, C
6With CK
1Link to each other.
Described sound light alarming circuit is by light emitting diode L
1, L
2, L
3, resistance R
3, R
6, R
7, R
8, triode, Q
1, hummer BELL forms; L
1, L
2, L
3Respectively through R
6, R
7, R
8With U
1The 10th, 9,8 pin link to each other R
6With Q
1Base stage link to each other Q
1Emitter connect hummer BELL.
Described Calibration Circuit is by resistance R
5, switch TEST
2Form R
5With U
1The 11st pin link to each other, again with TEST
2Link to each other.
The utility model has been broken circuit structure in the past, utilizes advanced technology, adopts MCU control, matches with software, and alarming value can be set automatically, and alarming value transfers numeral to and deposits among the MCU, has overcome human factor or the vibration influence to alarming value.Timing signal feeds the gas of respective concentration to gas sensor, press TEST2 alarm voltage value after 30 seconds and transfer figure pattern automatically to and deposit among the MCU, when combustable gas concentration surpasses setting value will generation sound, light reports to the police.The utility model circuit structure is simple, is convenient to large-scale production, has strengthened the stability of detector, more effectively satisfies requirement of client.
(4) description of drawings
Fig. 1 is a block diagram of the present utility model;
Fig. 2 is the electrical block diagram of preferred embodiment of the utility model.
(5) embodiment
Following structure accompanying drawing is done more detailed description to the utility model for example:
In conjunction with Fig. 1, it comprises the power supply unit that is made of current rectifying and wave filtering circuit and mu balanced circuit, it also comprises alarm detection circuit, Calibration Circuit, control circuit, sound light alarming circuit, power supply unit, alarm detection circuit, Calibration Circuit connect control circuit respectively, and the output of control circuit connects Drive and Control Circuit and sound light alarming circuit respectively.
In conjunction with Fig. 2, physical circuit of the present utility model consists of:
U
1Be microprocessor PICF676, U
2Be three terminal regulator LM7805.Specifically consisting of of each circuit:
Current rectifying and wave filtering circuit is by transformer T
1, diode D
1, D
2, D
3, D
4, capacitor C
3, C
4Form T
1The 1st pin respectively with D
1Positive pole, D
2Negative pole connect T
1The 2nd pin and D
3Positive pole, D
4Negative pole be connected.
Mu balanced circuit is by stabilivolt U
2, capacitor C
2Form U
2The 3rd pin and C
2Positive pole connect.
The alarm detection circuit is by gas sensor MQ
1, resistance R
9, R
10Form.MQ
1The 3rd pin link to each other R with the 5th pin
9With R
10Be connected, and then link to each other with the 3rd pin of MQ1.
Drive and Control Circuit is by resistance R
2, R
12, capacitor C
6, diode D
5, triode Q
2Form R
2Receive Q
2Base stage, CK
1Connect solenoid valve, D
5With T
1The 4th pin link to each other, again with R
12Polyphone, C
6With CK
1Link to each other.
Sound light alarming circuit is by light emitting diode L
1, L
2, L
3, resistance R
3, R
6, R
7, R
8, triode, Q
1, hummer BELL forms.L
1, L
2, L
3, respectively through R
6, R
7, R
8With U
1The 10th, 9,8 pin link to each other R
6With Q
1Base stage link to each other Q
1Emitter connect hummer BELL.Calibration Circuit is by resistance R
5, switch TEST
2Form R
5With U
1The 11st pin link to each other, again with TEST
2Link to each other.
Claims (7)
1, a kind of digital combustion gas detector, it comprises the power supply unit that is made of current rectifying and wave filtering circuit and mu balanced circuit, it also comprises alarm detection circuit, Calibration Circuit, control circuit, sound light alarming circuit, it is characterized in that: power supply unit, alarm detection circuit, Calibration Circuit connect control circuit respectively, and the output of control circuit connects Drive and Control Circuit and sound light alarming circuit respectively.
2, digital combustion gas detector according to claim 1, it is characterized in that: described current rectifying and wave filtering circuit is by transformer T
1, diode D
1, D
2, D
3, D
4, capacitor C
3, C
4Connect to form T
1The 1st pin respectively with D
1Positive pole, D
2Negative pole connect T
1The 2nd pin and D
3Positive pole, D
4Negative pole be connected.
3, digital combustion gas detector according to claim 2, it is characterized in that: described mu balanced circuit is by stabilivolt U
2, capacitor C
2Form U
2The 3rd pin and C
2Positive pole connect.
4, digital combustion gas detector according to claim 3, it is characterized in that: described alarm detection circuit is by gas sensor MQ
1, resistance R
9, R
10Form.MQ
1The 3rd pin link to each other R with the 5th pin
9With R
10Be connected, and then and MQ
1The 3rd pin link to each other.
5, digital combustion gas detector according to claim 4, it is characterized in that: described Drive and Control Circuit is by resistance R
2, R
12, capacitor C
6, diode D
5, triode Q
2Form R
2Receive Q
2Base stage, CK
1Connect solenoid valve, D
5With T
1The 4th pin link to each other, again with R
12Polyphone, C
6With CK
1Link to each other.
6, digital combustion gas detector according to claim 5, it is characterized in that: described sound light alarming circuit is by light emitting diode L
1, L
2, L
3, resistance R
3, R
6, R
7, R
8, triode, Q
1, hummer BELL forms; L
1, L
2, L
3Respectively through R
5, R
7, R
8With U
1The 10th, 9,8 pin link to each other R
6With Q
1Base stage link to each other Q
1Emitter connect hummer BELL.
7, digital combustion gas detector according to claim 6, it is characterized in that: described Calibration Circuit is by resistance R
5, switch TEST
2Form R
5With U
1The 11st pin link to each other, again with TEST
2Link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620021395 CN2932381Y (en) | 2006-08-07 | 2006-08-07 | A digital fuel gas detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620021395 CN2932381Y (en) | 2006-08-07 | 2006-08-07 | A digital fuel gas detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2932381Y true CN2932381Y (en) | 2007-08-08 |
Family
ID=38348879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620021395 Expired - Fee Related CN2932381Y (en) | 2006-08-07 | 2006-08-07 | A digital fuel gas detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2932381Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102682579A (en) * | 2012-05-03 | 2012-09-19 | 邱柏康 | Intelligent memory type gas leakage alarming control device |
| CN102800172A (en) * | 2012-07-27 | 2012-11-28 | 浙江三峰电子有限公司 | Household gas alarm and calibration method thereof |
-
2006
- 2006-08-07 CN CN 200620021395 patent/CN2932381Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102682579A (en) * | 2012-05-03 | 2012-09-19 | 邱柏康 | Intelligent memory type gas leakage alarming control device |
| CN102800172A (en) * | 2012-07-27 | 2012-11-28 | 浙江三峰电子有限公司 | Household gas alarm and calibration method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |