CN201600346U - Methane intelligent detector with on-line automatic calibration function - Google Patents
Methane intelligent detector with on-line automatic calibration function Download PDFInfo
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- CN201600346U CN201600346U CN2009202786916U CN200920278691U CN201600346U CN 201600346 U CN201600346 U CN 201600346U CN 2009202786916 U CN2009202786916 U CN 2009202786916U CN 200920278691 U CN200920278691 U CN 200920278691U CN 201600346 U CN201600346 U CN 201600346U
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- methane
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- circuit
- detector
- automatic calibration
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Abstract
The utility model relates to a methane intelligent detector with on-line automatic calibration function, which belongs to the electron and single chip microcomputer application technology field. The detector comprises a probe detection module, an infrared light-sensitive receiving circuit, a high-performance microprocessor, a display, a signal output circuit, a power supply module, an external socket, a dustproof net and a housing. The detector of the utility model comprises a single chip microcomputer solidification software, when the programs in the software runs, it can on-line adjust the parameters related to the zero point and sensitivity of the methane detection element automatically and termly. The detector of the utility model can be used at least half a year without manual parameter adjustment, can greatly reduce the working load of manual parameter adjustment; it also can detect the same real time methane concentration by a plurality of probes, greatly increases the confidence level of the detection data; therefore, application of the detector in coal mine has an significance for safety in production. And the detector of the needs not air valve or air pump, can greatly reduce the production working load, and reduce cost.
Description
Technical field the utility model is a kind of on-line automatic calibration methane intelligent detecting instrument, and it belongs to electronics and single chip microcomputer applied technical field.
The background technology China's coal-mine is a lot, often has accident to take place.Its one of the main reasons is that the methane online detection instrument does not reach due technical merit under the coal mine.For example, sulfide is contained in several extremely greatly collieries in China, and its erodable methane detection element changes its parameter, if untimely adjustment, detecting error can be increasing.In order to reduce to detect error, existing methane online detection instrument commonly used, need regular (for example per 5 days once) that it is taken ground under coal mine, the artificial parameter of adjusting in the amplifying circuit with methane detection element (abbreviation detecting element) relevant at zero point with sensitivity, and then be installed to downhole detection place, colliery, not only time-consuming bothersome, and unfavorable to Safety of Coal Mine Production.
At above-mentioned situation, microprocessor of the present utility model includes the program that can adjust parameter automatically, and it can overcome the above-mentioned drawback of existing methane online detection instrument commonly used.
Summary of the invention the utility model is by many probes detection module, infrared photosensitive receiving circuit, high-performance microprocessor, display, signal output apparatus, power module, external socket, Air Filter and shell are formed, the output of detection module and the output of infrared photosensitive receiving circuit connect the input of high-performance microprocessor, the output of high-performance microprocessor connects many probe detection modules, the input of display and signal output apparatus, the output of signal output apparatus connects the signal input part of external socket, the power output end of external socket connects the input of power module, and the output of power module connects high-performance microprocessor, infrared photosensitive receiving circuit, display, the power input of signal output apparatus and detection module.Detection module is the abbreviation of many probe detection modules, it can be made up of 2 to 16 methane detecting units and 2 to 18 accurate circuit for regulating and controlling of program controlled voltage, the output of each methane detecting unit is the output of detection module, and each detecting unit can be 1 methane detection element, and it also can be made of inflammable gas detecting element and accurate amplifying circuit.High-performance microprocessor can be made of 2 to 16 path analoging switch, accurate amplifying circuit, 10bit to 32bit A/D converter, 10bit to 24bit D/A converter, single-chip microcomputer and sound light alarming circuit, and these analog switches, accurate amplifying circuit, A/D converter and D/A converter also can be included in single chip microcomputer device or microprogramming device inside.Display can be made up of 2 to 6 LED charactrons and adapter circuit thereof, also can be made up of LCD digital display screen or liquid crystal dot matrix display screen and adapter circuit thereof.Its infrared photosensitive receiving circuit includes photosensitive tube, and it can receive the optical information that Infrared remote controller is sent, and high-performance microprocessor is given in its output.
Single chip microcomputer of the present utility model includes solidification software, during its program run, can be by the output and the appropriate height (it changes in 0 to 5V scope) of methane detection element supply voltage that changes automatically of the accurate circuit for regulating and controlling of voltage of single chip microcomputer, and regular (for example per 3 days once) parameter that on-line automatic adjustment is relevant with sensitivity with the zero point of detecting element, make the utility model not need people's wage adjustment parameter, more than sustainable use half a year.And the utility model can detect in real time same methane concentration with a plurality of detecting elements, give single chip microcomputer with its data, and the methane concentration instantaneous value is also confirmed in the automated intelligent analysis, has increased substantially the confidence level that detects data.In addition, the utility model does not need air valve or air pump, can reduce the production work amount significantly, and can reduce cost.
Because the utility model does not need artificial dismounting/accent parameter, more than sustainable use year in half a lifetime, can reduce the workload of people's wage adjustment parameter significantly; And its available a plurality of probe detects same real-time methane concentration, increased substantially the confidence level that detects data, therefore uses the utility model in the colliery, and is significant to improving the Safety of Coal Mine Production rate.
Description of drawings further specifies the utility model below in conjunction with accompanying drawing and embodiment.
Fig. 1 is one of the theory diagram of implementing of the present utility model." MSM " represents detection module among Fig. 1, and " H μ P " represents high-performance microprocessor, and " DP " represents display, and " LR " represents infrared photosensitive receiving circuit, " OC " representation signal output circuit, and " JC " represents external socket, and " PM " represents power module.
Fig. 2 is one of a kind of enforceable circuit theory diagrams of " MSM " among Fig. 1, and SRC0 to SRC6 can adopt identical element circuit among the figure.Its input and output link to each other with corresponding output with input among Fig. 4 separately, indicate among the figure.
Fig. 3 is one of a kind of enforceable circuit theory diagrams of " SRC0 " to " SRC6 " 7 same unit circuit among Fig. 2, and it is accurate circuit for regulating and controlling, wherein A of a kind of voltage
1Need select accurate amplifier for use, T2 and T3 can select metal-oxide-semiconductor field effect transistor for use.R in the frame of broken lines among the figure
aAnd r
bRepresent the equivalent resistance of it " black element " in the methane detection element and the equivalent resistance of " white element " respectively.Input end V among the figure
INWith output terminal V
OUTCorresponding with the input end and the output terminal of " SRC0 " to " SRC6 " among Fig. 2 respectively.The principle of work of this circuit can be found in disclosed technical information.In addition, Vr represents reference voltage among the figure, and it can link to each other with the reference voltage output end of high-performance single chip microcomputer.
Fig. 4 has described " H μ P " and " DP " a kind of enforceable circuit theory among Fig. 1, wherein IC5 is a high-performance microprocessor, and it is the single chip microcomputer that includes multiway analog switch, accurate A/D converter, accurate D/A converter, memory under program and data memory.IC6 is the binary-coded decimal → seven segment code switching device of band data latching function among the figure, and C51, C53, C55 and C61 represent monolithic capacitor, and C52 and C54 represent aluminium electrolutic capacitor, and C56 and C57 represent the ceramic disc capacitor device; CR represents quartz resonator, and L51 and L52 represent inductor, and R41 to R43 and R50 to R67 represent resistor, S
0Represent the Reset button, np1, np2, np3 and np4 represent the negative electrode of common cathode LED charactron.Fig. 4 has also described IC5 and has reached being connected of " OC " with " LR ", and " LR " can select the infrared photosensitive receiver module sold on the market (the communal technique explanation is arranged) for use, and " OC " is optional to be the V → f change-over circuit of core or to be core with XRT115 in order to AD654
Change-over circuit has the detailed technology explanation in these two kinds of device data.Hummer is the audible alarm device among the figure, and D41 can select the super bright flicker of Φ 12 white hair ruddiness LED for use, and they meet metal-oxide-semiconductor field effect transistor T4, whether sends the sound and light alarm signal by the just control of the I/O mouth P1.7 level of IC5.
Further specify a kind of embodiment of the present utility model below the embodiment.
" PM " can choose " AC/DC " or " DC/DC " module among Fig. 1, for example chooses " 12-24V
DC→ 5V
DC/ 1A and 12V
DC/ 0.5A " " DC/DC " power module.
A among Fig. 3
1Can select OPA735 for use, it is the accurate amplifier device of single power supply, its input offset voltage≤5 μ V, and temperature floats≤0.05 μ V/ ℃, input bias current≤0.3nA, open-loop gain 〉=115dB.T2 and T3 can select metal-oxide-semiconductor field effect transistor HUF75652 for use among the figure, its conducting resistance≤8m Ω.R among the figure
1Can select 11.5k Ω/0.25w/0.01%/3ppm/ ℃ precision resistor for use, R
2Can select 1k Ω/0.25w/0.01%/3ppm/ ℃ precision resistor for use, R
3Can select 2k Ω/0.0625w/1% metal film resistor for use, R
4Can select 6.2k Ω/0.0625w/5% metal film resistor for use, R
21And R
31Can select 1k Ω/0.0625w/5% metal film resistor for use, R
22And R
32Can select 20k Ω/0.0625w/5% metal film resistor for use, C
1Can select 2.2 μ F monolithic capacitors for use.Frame of broken lines is interior with r among the figure
aAnd r
bCan select the colliery for use for the detecting element of equivalent resistance representative and detect carrier catalyst element MJC4 with methane.Vcc can connect+12V among the figure, V
DDCan connect+5V.On above-mentioned parameter and Vr=2.500V basis, work as V
INDuring for low level, T2 turn-offs, V
OUT=Vr=2.500V; Work as V
INDuring for high level, T2 conducting, V
OUTK Ω=the 0.200V of=Vr*R2/ (R1+R2)=2.500*1k Ω/(11.5+1).
C among Fig. 4
51Can select 6.8 μ F monolithic capacitors for use, C
52And C
54Can select 100 μ F/10V aluminium electrolutic capacitors for use, C
53, C
55And C
61Can select 2.2 μ F monolithic capacitors for use, C
56And C
57Can select 15pF ceramic disc capacitor device for use; CR can select 10MHz quartz resonator, L for use
51And L
52Can select 68 μ H/0.01 Ω inductors for use, R
41Can select 200 Ω/0.5W/5% metal film resistor for use, R
42Can select 20k Ω/0.0625w/5% metal film resistor for use, R
43Can select 1k Ω/0.0625w/5% metal film resistor for use, R
50Can select 30k Ω/0.0625W/5% metal film resistor for use, R
51Can select 390 Ω/0.0625W/5% metal film resistor separately for use to R67, IC5 can select MSC1212Y5 (it is a high-performance microprocessor, sees its device data for details) for use, and writes appropriate software, and it is solidificated among the MSC1212Y5.IC6 can select CD4511 for use among the figure, and the LED charactron can be selected 5101AS for use, and CD4511 and 5101AS can find description of Related Art in public data.
Obviously, the utility model need have appropriate software solidification in single chip microcomputer, and it could operate as normal.As for solidification software of the present utility model, will apply for separately intellectual property protection not explaining herein.
Claims (5)
1. on-line automatic calibration methane intelligent detecting instrument, it is characterized in that: it is by many probes detection module, infrared photosensitive receiving circuit, high-performance microprocessor, display, signal output apparatus, power module, external socket, Air Filter and shell are formed, the output of detection module and the output of infrared photosensitive receiving circuit connect the input of high-performance microprocessor, the output of high-performance microprocessor connects many probe detection modules, the input of display and signal output apparatus, the output of signal output apparatus connects the signal input part of external socket, the power output end of external socket connects the input of power module, and the output of power module connects high-performance microprocessor, infrared photosensitive receiving circuit, display, the power input of signal output apparatus and detection module.
2. on-line automatic calibration methane intelligent detecting instrument according to claim 1, it is characterized in that: detection module is the abbreviation of many probe detection modules, it can be made up of 2 to 16 methane detecting units and 2 to 18 accurate circuit for regulating and controlling of program controlled voltage, the output of each methane detecting unit is the output of detection module, and each detecting unit can be 1 methane detection element, and it also can be made of inflammable gas detecting element and accurate amplifying circuit.
3. on-line automatic calibration methane intelligent detecting instrument according to claim 1, it is characterized in that: high-performance microprocessor can be made of 2 to 16 path analoging switch, accurate amplifying circuit, 10bit to 32bit A/D converter, 10bit to 24bit D/A converter, single-chip microcomputer and sound light alarming circuit, and these analog switches, accurate amplifying circuit, A/D converter and D/A converter also can be included in single chip microcomputer device or microprogramming device inside.
4. on-line automatic calibration methane intelligent detecting instrument according to claim 1 is characterized in that: display can be made up of 2 to 6 LED charactrons and adapter circuit thereof, also can be made up of LCD digital display screen or liquid crystal dot matrix display screen and adapter circuit thereof.
5. on-line automatic calibration methane intelligent detecting instrument according to claim 1, it is characterized in that: its infrared photosensitive receiving circuit includes photosensitive tube, and it can receive the optical information that Infrared remote controller is sent, and high-performance microprocessor is given in its output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202786916U CN201600346U (en) | 2009-11-06 | 2009-11-06 | Methane intelligent detector with on-line automatic calibration function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202786916U CN201600346U (en) | 2009-11-06 | 2009-11-06 | Methane intelligent detector with on-line automatic calibration function |
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| Publication Number | Publication Date |
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| CN201600346U true CN201600346U (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202786916U Expired - Fee Related CN201600346U (en) | 2009-11-06 | 2009-11-06 | Methane intelligent detector with on-line automatic calibration function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063704A (en) * | 2012-12-20 | 2013-04-24 | 江苏三恒科技股份有限公司 | Automatic zero setting device and system of methane detector |
| CN105717173A (en) * | 2016-03-30 | 2016-06-29 | 济南本安科技发展有限公司 | Two-wire toxic gas detector with digital display function |
| CN107121365A (en) * | 2016-02-25 | 2017-09-01 | 亮锐控股有限公司 | The zero point correction of grain density sensor |
| CN109949557A (en) * | 2019-03-29 | 2019-06-28 | 中国计量大学上虞高等研究院有限公司 | Portable thermal catalytic methane detects alarm automatic Verification platform |
-
2009
- 2009-11-06 CN CN2009202786916U patent/CN201600346U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063704A (en) * | 2012-12-20 | 2013-04-24 | 江苏三恒科技股份有限公司 | Automatic zero setting device and system of methane detector |
| CN107121365A (en) * | 2016-02-25 | 2017-09-01 | 亮锐控股有限公司 | The zero point correction of grain density sensor |
| CN105717173A (en) * | 2016-03-30 | 2016-06-29 | 济南本安科技发展有限公司 | Two-wire toxic gas detector with digital display function |
| CN109949557A (en) * | 2019-03-29 | 2019-06-28 | 中国计量大学上虞高等研究院有限公司 | Portable thermal catalytic methane detects alarm automatic Verification platform |
| CN109949557B (en) * | 2019-03-29 | 2023-11-03 | 中国计量大学上虞高等研究院有限公司 | Portable automatic calibration platform for thermal catalytic methane detection alarm |
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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: 20101006 Termination date: 20131106 |