CN203786111U - Calibrating device for optical interference type methane measuring equipment - Google Patents
Calibrating device for optical interference type methane measuring equipment Download PDFInfo
- Publication number
- CN203786111U CN203786111U CN201420131494.2U CN201420131494U CN203786111U CN 203786111 U CN203786111 U CN 203786111U CN 201420131494 U CN201420131494 U CN 201420131494U CN 203786111 U CN203786111 U CN 203786111U
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- China
- Prior art keywords
- signal amplifier
- interference type
- model
- type methane
- utility
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 230000003287 optical effect Effects 0.000 title abstract 2
- 238000009434 installation Methods 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a calibrating device for optical interference type methane measuring equipment. The calibrating device comprises a pressure source, a measured apparatus, a pressure sensor and a signal amplifier group which are electrically connected in sequence, and further comprises a temperature sensor and a temperature amplifier which are electrically connected in sequence, wherein the signal amplifier group and the temperature amplifier are respectively connected with an input end of a single chip machine by an A/D (analog to digital) converter; the output end of the single chip machine is respectively connected with a display, a USB (universal serial bus) U interface and a keyboard. The calibrating device disclosed by the utility model is high in measuring accuracy, stable and reliable in metering performance, simple and reasonable in structure, simple in measuring operation steps and capable of reducing operation errors, does not need manual computation, and does not have artificial reading errors and calculating errors.
Description
Technical field
The utility model relates to the calibration field of methane analyzer, refers to especially a kind of light interference type methane analyzer calibrating installation.
Background technology
Light interference methane tester is that the industries such as colliery are for measuring gas (its principal ingredient is methane) concentration, the important safety monitoring instrument of pre-anti-gas explosion, gas burst accident, except the cycle is sent the calibrating of metrological supervision department in accordance with regulations, user also must carry out daily calibration, keeps at any time its reliability and measuring accuracy.
Current digital interference formula methane analyzer calibrating installation subject matter and defect:
1, digital watch is separated with pressure source, causes and carries inconvenience, complex operation;
2, such device does not have automatic reading system, can not realize raw readings and calibration certificate and automatically generates and print.
Utility model content
The utility model proposes a kind of light interference type methane analyzer calibrating installation, solved the problem that calibrating installation of the prior art carries inconvenience, complex operation.
The technical solution of the utility model is achieved in that
Light interference type methane analyzer calibrating installation, comprise: the pressure source that order is electrically connected to, by test examination instrument, pressure transducer and signal amplifier group, also comprise temperature sensor and temperature amplifier that order is electrically connected to, signal amplifier group is connected with the input end of single-chip microcomputer through A/D converter respectively with temperature amplifier, and the output terminal of single-chip microcomputer is connected with keyboard with display, USBU interface respectively.
Preferably, signal amplifier group comprises 0-7KPa signal amplifier and 0-70KPa signal amplifier.
Preferably, signal amplifier is the signal amplifier of 7650 models.
Preferably, described single-chip microcomputer is the single-chip microcomputer of 8051 models.
Preferably, described temperature sensor is the temperature sensor of Pt100 model.
The utility model adopts table source one, and automatic range switching, " back to zero " are controlled by button or computer, and what make is easy to carry, simple to operate, at such device, adopts " reverse-examination " method, realizes automatically reading of data, and generates raw readings and certificate.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is circuit structure theory diagram of the present utility model;
In figure:
1, pressure source; 2, by test examination instrument; 3, pressure transducer; 4,0-7KPa signal amplifier; 5, A/D converter; 6, single-chip microcomputer; 7, display; 8, USBU interface; 9, printer; 10, computer; 11,0-70KPa signal amplifier; 12, A/D converter; 13, temperature sensor; 14, temperature amplifier; 15, A/D converter; 16, keyboard.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, light interference type methane analyzer calibrating installation of the present utility model, comprise cabinet, cabinet inside is provided with the pressure source 1 that order is electrically connected to, by test examination instrument 2, pressure transducer 3, signal amplifier, A/D converter and single-chip microcomputer 6, preferably, pressure transducer 3 can be selected existing solid-state pressure resistance type, strain-type or diffuse si equal pressure sensor, signal amplifier is the signal amplifier of 7650 models, also comprise the temperature sensor 13 that order is electrically connected to, temperature amplifier 14 and A/D converter 15, A/D converter 15 is connected with single-chip microcomputer 6, temperature sensor 13 is selected the temperature sensor of Pt100 model, temperature amplifier 14 is selected the temperature amplifier of 7650 models, A/D converter 15 is selected the A/D converter of 7135 models, single-chip microcomputer 6 is selected the single-chip microcomputer of 8051 models, keyboard 16 is connected with single-chip microcomputer 6 respectively with display 7, display 7 can adopt nixie display, also can adopt liquid crystal display, be used for carrying out digital electronic measurement.
The physical quantity that the utility model is measured is pressure and temperature, methane concentration value calculates according to formula x=P/1.7665 (273+t), measuring process and operational method are compiled as program software, by single-chip microcomputer 6, be processed into digital electric signal, by display 7, directly show the digital quantity value of methane concentration.
Pressure transducer 3 is installed in cabinet, electric pressure signal input measurement circuit, temperature sensor 13 is placed in cabinet equally, its sensing head contact atmosphere, and temperature signal is by signal wire input measurement circuit, keyboard 16 is located on the front panel of cabinet, keyboard 16 comprises a plurality of function buttons, and each button is electrically connected to single-chip microcomputer 6, is respectively used to temperature, pressure, methane concentration measurement operational order, single-chip microcomputer 6 is connected temperature signal according to operational order, or cut-in pressure signal.
Principle of work of the present utility model is:
Work as pressure, when temperature acts on respectively pressure transducer 3 and temperature sensor 13, the bridge resistance, that forms sensor will change, thereby export one and voltage, the voltage signal that temperature is directly proportional, through amplifying, A/D conversion, after micro-processing, on display 7, demonstrate corresponding force value or temperature value or methane concentration value, concrete, the pressure being produced by pressure source 1 is applied to by the pressure transducer 3 in test examination instrument 2 and this device simultaneously, the electric signal being directly proportional to force value that pressure transducer 3 produces, by 0-7KPa signal amplifier 4 and 0-70KPa signal amplifier 11, also through A/D converter group, input in single-chip microcomputer 6 respectively, A/D converter group comprises the A/D converter 5 being connected with 0-7KPa signal amplifier 4 and the A/D converter 12 being connected with 0-70KPa signal amplifier 11, A/D converter group converts the electric analoging signal being directly proportional to force value to digital signal and is delivered to single-chip microcomputer 6 and carries out data processing, extraneous computer 10 is realized data acquisition and control by USBU interface 8 and this device, and generate raw readings and certificate and print by printer 9 through external computer 10.
The utility model adopts table source one, automatic range switching, and back to zero is controlled by button or computer, therefore easy to carry, simple to operate, at such device, adopt reverse-examination method, realize automatically reading of data, and generate raw readings and certificate, and connect simple, easy to carry.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. light interference type methane analyzer calibrating installation, it is characterized in that, comprise: the pressure source that order is electrically connected to, by test examination instrument, pressure transducer and signal amplifier group, also comprise temperature sensor and temperature amplifier that order is electrically connected to, described signal amplifier group is connected with the input end of single-chip microcomputer through A/D converter respectively with described temperature amplifier, and the output terminal of described single-chip microcomputer is connected with keyboard with display, USBU interface respectively.
2. light interference type methane analyzer calibrating installation according to claim 1, is characterized in that, described signal amplifier group comprises 0-7KPa signal amplifier and 0-70KPa signal amplifier.
3. light interference type methane analyzer calibrating installation according to claim 2, is characterized in that, described signal amplifier is the signal amplifier of 7650 models.
4. light interference type methane analyzer calibrating installation according to claim 1, is characterized in that, described single-chip microcomputer is the single-chip microcomputer of 8051 models.
5. light interference type methane analyzer calibrating installation according to claim 1, is characterized in that, described temperature sensor is the temperature sensor of Pt100 model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131494.2U CN203786111U (en) | 2014-03-21 | 2014-03-21 | Calibrating device for optical interference type methane measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131494.2U CN203786111U (en) | 2014-03-21 | 2014-03-21 | Calibrating device for optical interference type methane measuring equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786111U true CN203786111U (en) | 2014-08-20 |
Family
ID=51322285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420131494.2U Expired - Fee Related CN203786111U (en) | 2014-03-21 | 2014-03-21 | Calibrating device for optical interference type methane measuring equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203786111U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031419A (en) * | 2019-04-08 | 2019-07-19 | 中国矿业大学 | A kind of automatic calibrator of non-dispersive infrared methane sensor |
-
2014
- 2014-03-21 CN CN201420131494.2U patent/CN203786111U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031419A (en) * | 2019-04-08 | 2019-07-19 | 中国矿业大学 | A kind of automatic calibrator of non-dispersive infrared methane sensor |
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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: 20140820 Termination date: 20150321 |
|
| EXPY | Termination of patent right or utility model |