CN2783317Y - Portable intelligent light interference methane tester - Google Patents
Portable intelligent light interference methane tester Download PDFInfo
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- CN2783317Y CN2783317Y CN 200520033421 CN200520033421U CN2783317Y CN 2783317 Y CN2783317 Y CN 2783317Y CN 200520033421 CN200520033421 CN 200520033421 CN 200520033421 U CN200520033421 U CN 200520033421U CN 2783317 Y CN2783317 Y CN 2783317Y
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- mirror
- reflective
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- portable intelligent
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Abstract
The utility model relates to a portable intelligent light interference methane tester, comprising a luminaire 1, a beam condenser 2, a flat mirror 3, an air chamber 4, a refracted shuttle mirror 5, an object glass 6, a reflecting shuttle mirror 7, a battery box 10 and a base plate 12. The utility model is characterized in that it is equipped with a photoelectric sensor 11 and a projection imaging system which is combined by a minus lens 8, a big reflective mirror 9, the object glass 6 and the reflecting shuttle mirror 7. Compared with the existing light interference methane tester, the portable intelligent light interference methane tester of the utility model can change the amount of movement of a light interference stripe into electrical signals which are then changed into testing data which are displayed by a digital tube. The utility model has fast testing speed and high accuracy and can be connected with a computer to store the data duly and can be taken and used conveniently.
Description
One, technical field
The utility model belongs to the what optical detecting instrument, is specifically related to interference of light methane detecting device.
Two, background technology
In the prior art, the instrument that is used to monitor coal mine gas concentration is to use traditional mechanical type interference of light methane analyzer.It is to use interference of light principle, chooses by eyepiece and observes the amount of movement of photometry system interference of light striped, measures the concentration value of methane in the gas sample; What it adopted is the incandescent lamp bulb light source, no projection imaging system and photoelectric sensor, and also battery box is installed on the shell.This mechanical type interference of light methane analyzer, measurement range is wide, certain degree of accuracy, no rapid wear sensing element are arranged, and maintenance load is little; But its manual operation sum of errors collimation error is bigger, and reading is not directly perceived, and the measurement data of instrument can't store, can only be by hand one by one record, use both inconveniently, also be unfavorable for the management of colliery to measurement data; In addition, the structure of whole analyzer is not compact, and volume is bigger, carries inconvenience.
Three, summary of the invention
Above-mentioned defective at the existence of existing machinery formula interference of light methane analyzer, plan is done structural improvement to it, manufacture and design a kind of portable intelligent interference of light methane analyzer, making it the amount of movement of interference of light striped can be converted to electric signal is directly shown by charactron, it is fast to make it detection speed, and reading is directly perceived, avoids the artificial operate miss and the collimation error, and can measurement data in time be stored with computer interface, carry with easy to use.
Technical solution adopted in the utility model is as follows.
A kind of portable intelligent interference of light methane analyzer, include light source, condenser, level crossing, air chamber, refraction spindle mirror, object lens, reflective spindle mirror, battery box and substrate, it is characterized in that: 1) it also has projection imaging system and the photoelectric sensor that is formed by negative lens, big reflective mirror and object lens, reflective spindle mirror assembly; 2) negative lens, big reflective mirror are positioned at same horizontal axis with reflective spindle mirror and are installed on the substrate, and negative lens is arranged on reflective spindle mirror with greatly between the reflective mirror, and the exiting surface of reflective spindle mirror, the incidence surface of reflective mirror is corresponding with the minute surface of negative lens separately greatly; 3) photoelectric sensor is installed on the big reflective mirror exiting surface opposing substrates, makes the sensitive surface of photoelectric sensor corresponding with the exiting surface of big reflective mirror.Its feature also is: said battery box is that right-hand member is fixed on the substrate, and left end can freely stretch; Said light source is to replace incandescent lamp bulb to do light source with the LED white light-emitting diode.
Adopt the portable intelligent interference of light methane analyzer monitoring coal mine gas concentration of the utility model structure, owing to set up projection imaging system and photoelectric sensor, just the amount of movement of interference of light striped can be converted to electric signal, being converted to the detection data is more directly shown by charactron, detection speed is fast, reading is directly perceived, has avoided the artificial operate miss and the collimation error fully, and can measurement data in time have been stored with computer interface; Only with an end and the fixing mode of substrate, the pressure in the time of finely overcoming loading and unloading battery is to the influence of interference of light striped amount of movement for battery box; Adopt white light-emitting diode to replace incandescent lamp bulb to do light source and makes the interference fringe parasitic light that is produced few, the work of favourable what photoelectric sensor, also power saving simultaneously prolongs battery service time; The portable intelligent interference of light methane analyzer of the utility model structure is compared with existing interference of light methane analyzer, compact conformation, and detection speed is fast, degree of accuracy is high, carry and use more convenient.
Four, description of drawings
Fig. 1 is the planar structure synoptic diagram of the utility model portable intelligent interference of light methane analyzer;
Fig. 2 is the A-A sectional structure synoptic diagram of Fig. 1;
In the drawings, the big reflective mirror 10-of 1-light source 2-condenser 3-level crossing 4-air chamber 5-refraction spindle mirror 6-object lens 7-reflective spindle mirror 8-negative lens 9-battery box 11-photoelectric sensor 12-substrate O-interference fringe forms point.
Arrow points is a light path signal direction.
Five, embodiment
Further specify the concrete structure of the utility model portable intelligent interference of light methane analyzer and its principle of work below in conjunction with accompanying drawing.
A kind of portable intelligent interference of light methane analyzer, include light source 1, condenser 2, level crossing 3, air chamber 4, refraction spindle mirror 5, object lens 6, reflective spindle mirror 7, battery box 10 and substrate 12, it is characterized in that: 1) it also has projection imaging system and the photoelectric sensor 11 that is formed by negative lens 8, big reflective mirror 9 and object lens 6, reflective spindle mirror 7 assembly; 2) negative lens 8, big reflective mirror 9 are positioned at same horizontal axis with reflective spindle mirror 7 and are installed on the substrate 12, negative lens 8 is arranged between reflective spindle mirror 7 and the big reflective mirror 9, and the incidence surface of the exiting surface of reflective spindle mirror 7, big reflective mirror 9 is corresponding with the minute surface of negative lens 8 separately; 3) photoelectric sensor 11 is installed on the big reflective mirror 9 exiting surface opposing substrates 12, makes the sensitive surface of photoelectric sensor 11 corresponding with the exiting surface of big reflective mirror 9.Its feature also is: said battery box 10 is that right-hand member is fixed on the substrate 12, and left end can freely stretch; Said light source 1 is to replace incandescent lamp bulb to do light source with the LED white light-emitting diode.
Its principle of work is: light source 1 (white light-emitting diode) is connected circuit and is sent white light, after a branch of light arrives the minute surface of level crossing 3 through condenser 2, being divided into two-beam is mapped on the minute surface of refraction spindle mirror 5 by the gas sample in the air chamber 4, two-beam is done 180 ° big reflections on the minute surface of refraction spindle mirror 5, turn back on level crossing 3 minute surfaces by air chamber 4 again and overlap at " o " point, gas in the air chamber 4 changes the refractive index of light and has changed the light path of light beam, thereby produces the amount of movement of interference of light striped; Gas is dense more, and the amount of movement of its interference of light striped is also big more, therefore just can determine the concentration value of gas from the size of moving interference fringes amount; Interference of light striped amount of movement in the generation of " o " point, be delivered to the sensitive surface of photoelectric sensor 11 again through the projection imaging system that forms by negative lens 8, big reflective mirror 9 and object lens 6, reflective spindle mirror 7 assembly, interference of light striped amount of movement just can be converted to electric signal in photoelectric sensor 11, be converted to again and detect data and directly show, thereby measure the concentration value of methane in the sample of giving vent to anger rapidly and accurately by charactron.
Claims (3)
1, a kind of portable intelligent interference of light methane analyzer includes light source (1), condenser (2), level crossing (3), air chamber (4), refraction spindle mirror (5), object lens (6), reflective spindle mirror (7), battery box (10) and substrate (12), it is characterized in that:
1) it also has projection imaging system and the photoelectric sensor (11) that is formed by negative lens (8), big reflective mirror (9) and object lens (6), reflective spindle mirror (7) assembly;
2) negative lens (8), big reflective mirror (9) are positioned at same horizontal axis with reflective spindle mirror (7) and are installed on the substrate (12), negative lens (8) is arranged between reflective spindle mirror (7) and the big reflective mirror (9), and the incidence surface of the exiting surface of reflective spindle mirror (7), big reflective mirror (9) is corresponding with the minute surface of negative lens (8) separately;
3) photoelectric sensor (11) is installed on big reflective mirror (9) the exiting surface opposing substrates (12), makes the sensitive surface of photoelectric sensor (11) corresponding with the exiting surface of big reflective mirror (9).
2, according to the described portable intelligent interference of light of claim 1 methane analyzer, it is characterized in that battery box (10) right-hand member is fixed on the substrate (12), left end can freely stretch.
3,, it is characterized in that light source (1) uses the LED white light-emitting diode according to the described portable intelligent interference of light of claim 1 methane analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033421 CN2783317Y (en) | 2005-03-07 | 2005-03-07 | Portable intelligent light interference methane tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033421 CN2783317Y (en) | 2005-03-07 | 2005-03-07 | Portable intelligent light interference methane tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2783317Y true CN2783317Y (en) | 2006-05-24 |
Family
ID=36768300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520033421 Expired - Fee Related CN2783317Y (en) | 2005-03-07 | 2005-03-07 | Portable intelligent light interference methane tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2783317Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776596B (en) * | 2010-02-03 | 2011-08-17 | 中北大学 | Gas density intelligent test system and method |
| CN102253000A (en) * | 2011-04-12 | 2011-11-23 | 中北大学 | Light interference gas concentration detection system of laser optical fiber CCD (Charge-Coupled Device) |
| CN101576489B (en) * | 2009-05-15 | 2012-04-18 | 重庆同博测控仪器有限公司 | Device for detecting methane or carbon dioxide through optical interference and precision automatic compensation detecting method |
| CN111060479A (en) * | 2019-12-10 | 2020-04-24 | 天津大学 | Mine gas measurement system and method based on STM32F407ZG development board |
-
2005
- 2005-03-07 CN CN 200520033421 patent/CN2783317Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576489B (en) * | 2009-05-15 | 2012-04-18 | 重庆同博测控仪器有限公司 | Device for detecting methane or carbon dioxide through optical interference and precision automatic compensation detecting method |
| CN101776596B (en) * | 2010-02-03 | 2011-08-17 | 中北大学 | Gas density intelligent test system and method |
| CN102253000A (en) * | 2011-04-12 | 2011-11-23 | 中北大学 | Light interference gas concentration detection system of laser optical fiber CCD (Charge-Coupled Device) |
| CN111060479A (en) * | 2019-12-10 | 2020-04-24 | 天津大学 | Mine gas measurement system and method based on STM32F407ZG development board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060524 Termination date: 20100307 |