CN202330333U - Suspension type methane measuring apparatus - Google Patents
Suspension type methane measuring apparatus Download PDFInfo
- Publication number
- CN202330333U CN202330333U CN2011204551876U CN201120455187U CN202330333U CN 202330333 U CN202330333 U CN 202330333U CN 2011204551876 U CN2011204551876 U CN 2011204551876U CN 201120455187 U CN201120455187 U CN 201120455187U CN 202330333 U CN202330333 U CN 202330333U
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- type methane
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Abstract
The utility model discloses a suspension type methane measuring apparatus, and relates to the technical field of a gas measuring device. The suspension type methane measuring apparatus comprises a shell component in which a printed board is arranged, and is characterized in that: the printed board is provided with a singlechip control circuit, and a digital display circuit, a methane gas measuring catalysis circuit, a buzzer alarm circuit, a battery power supply circuit and a key control circuit which are connected with the singlechip control circuit respectively. An intelligent, multifunctional and micro-miniature digital measuring instrument which is designed by using a high-performance microcontroller and a novel electronic element has the advantages of small size, light weight, complete functions, simplicity, easiness and the like.
Description
Technical field
The utility model relates to eudiometry device technique field, is specifically related to a kind of suspension type methane analyzer.
Background technology
The mechanical type methane pick-up unit of colliery use at present is the interference of light methane detection technique of introducing from Japan the beginning of the fifties.What it adopted is mechanical light channel structure, cheap for manufacturing cost; But volume is bigger and heavy, and is not portable; Barrier propterty is poor; Gas sampling can not be gathered automatically; Temperature, precision are drifted about.
Chinese patent CN2783317 discloses a kind of portable intelligent interference of light methane analyzer, and it comprises shell, light path system and projection imaging system in the enclosure and that be communicated with inlet channel are set.This analyzer is compared with mechanical interference of light methane analyzer; Compact conformation, it can convert the amount of movement of interference of light striped into electric signal, converts the detection data again into and is directly shown by charactron; Its detection speed is fast, degree of accuracy is high, can will detect data with computer interface and in time store; But it can not be sampled to gas automatically, and precision is drifted about with temperature variation, makes measured value inaccurate.
In sum, the problem that the interference of light methane analyzer of prior art exists is that volume is big, can not sample to gas automatically, and precision is drifted about with temperature variation, and measured value is inaccurate.
The utility model content
The utility model technical matters to be solved is to provide a kind of intellectuality, multi-functional, the accurate suspension type methane analyzer of measurement.
The utility model technical matters to be solved adopts following technical scheme to realize,
A kind of suspension type methane analyzer; Comprise case member; Be provided with printed board in the described case member; It is characterized in that: described printed board is provided with single chip machine controlling circuit, measures catalysis circuit, buzzer alarm circuit, battery feed circuit and key control circuit with digital display circuit, methane gas that single chip machine controlling circuit is connected respectively.
Described digital display circuit adopts charactron.
Described battery feed circuit adopts lithium battery power supply.
The beneficial effect of the utility model is: the utility model adopts intellectuality, multi-functional, the digital determining instrument of microminiature of high-performance microcontroller and new electronic component design; Collective is long-pending little; In light weight, complete function such as is simple and easy to use at advantage; This product mainly is applicable to the mensuration and the warning of concentration of methane gas in the coal mine operation environment, can supply down-hole cadre, managerial personnel, gas detection person getting working face staff etc. to carry use.
Description of drawings
Fig. 1 is the utility model circuit block diagram;
Fig. 2 is the utility model single chip machine controlling circuit schematic diagram;
Fig. 3 is the digital display circuit schematic diagram of the utility model;
Fig. 4 measures the catalysis circuit theory diagrams for the utility model methane gas;
Fig. 5 is the utility model buzzer alarm circuit schematic diagram;
Fig. 6 is the utility model battery feed circuit schematic diagram;
Fig. 7 is the utility model key control circuit schematic diagram.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1; A kind of suspension type methane analyzer comprises case member, is provided with printed board in the case member; Printed board is provided with single chip machine controlling circuit; Measure catalysis circuit, buzzer alarm circuit, battery feed circuit and key control circuit with digital display circuit, methane gas that single chip machine controlling circuit is connected respectively, digital display circuit adopts charactron, and battery feed circuit adopts lithium battery power supply.
Extremely shown in Figure 7 like Fig. 2; The utility model adopts thermocatalysis type high-performance sensors to form Wheatstone bridge; Gage beam by carrier catalyst element (being commonly called as black element) and pure year element (being commonly called as white element) form; Sub-arm is made up of metalfilmresistor and potentiometer, and mu balanced circuit is that electric bridge provides stable voltage.Bridge circuit is in equilibrium state in fresh air, and in tested gas, methane produces catalytic reaction (flameless burning) at black element surface; Black component temperature is raise; Resistance increases, the bridge circuit out of trim, thus export a potential difference (PD); This potential difference (PD) within the specific limits, its size be directly proportional with methane concentration.
The potential difference signal that sensor produces is delivered to the interior A/D converter of microcontroller and is converted digital signal into through after changing, and handles the back by microcontroller and on the instrument display screen, shows respective concentration.The A/D converter that while cell voltage sample circuit is delivered to the voltage signal of obtaining in the microcontroller converts digital signal into, is handled by microcontroller, and shows cell voltage in real time.The analyzer clock, the personnel that are convenient for carrying observe.The microcontroller of analyzer constantly monitoring battery voltage whether under-voltage (≤3.2V) whether exceed standard with gas concentration.If cell voltage is under-voltage or gas concentration surpasses the setting maximum range; Microcontroller drives warning circuit immediately; Send sound, light warning; Microprocessor controls on-off circuit shutdown after 3 seconds is avoided high concentration methane or other high concentration gas percussions with protection unlikely overdischarge of battery and sensor.
More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (3)
1. suspension type methane analyzer; Comprise case member; Be provided with printed board in the described case member; It is characterized in that: described printed board is provided with single chip machine controlling circuit, measures catalysis circuit, buzzer alarm circuit, battery feed circuit and key control circuit with digital display circuit, methane gas that single chip machine controlling circuit is connected respectively.
2. suspension type methane analyzer according to claim 1 is characterized in that: described digital display circuit adopts charactron.
3. suspension type methane analyzer according to claim 1 is characterized in that: described battery feed circuit adopts lithium battery power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204551876U CN202330333U (en) | 2011-11-16 | 2011-11-16 | Suspension type methane measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204551876U CN202330333U (en) | 2011-11-16 | 2011-11-16 | Suspension type methane measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202330333U true CN202330333U (en) | 2012-07-11 |
Family
ID=46442309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204551876U Expired - Fee Related CN202330333U (en) | 2011-11-16 | 2011-11-16 | Suspension type methane measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202330333U (en) |
-
2011
- 2011-11-16 CN CN2011204551876U patent/CN202330333U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20141116 |
|
| EXPY | Termination of patent right or utility model |