CN207318335U - A kind of mining infrared methane concentration detector - Google Patents
A kind of mining infrared methane concentration detector Download PDFInfo
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- CN207318335U CN207318335U CN201721286013.5U CN201721286013U CN207318335U CN 207318335 U CN207318335 U CN 207318335U CN 201721286013 U CN201721286013 U CN 201721286013U CN 207318335 U CN207318335 U CN 207318335U
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- China
- Prior art keywords
- air pump
- test chamber
- methane concentration
- concentration detector
- diaphragm
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Abstract
A kind of mining infrared methane concentration detector, it belongs to fixation gas concentration measurement technical field under mine.The detecting system of this detector includes air pump control unit, air pump, absolute pressure transducer, sensing methane concentration device and test chamber；The reception CPU main control unit instructions of air pump control unit, driving air pump work, extracts the air in test chamber, pressure reduction in test chamber is formed pressure difference on diaphragm, pressure difference is detected by absolute pressure transducer.The concentration detector uses lattice lcd with Display of Chinese characters, can substantially increase the operability of instrument as medium is shown；Meanwhile gauge internal is equipped with the system that whether blocks of detection methane transducer diaphragm, if diaphragm blocks, instrument can on liquid crystal Display of Chinese characters warning message, and alarm is sent, for prompting changing diaphragm；Moreover, instrument also has the function of warning message storage, time clock feature, alarm clock music reminding and temperature BAP Barometric Absolute Pressure display function etc..
Description
Technical field
A kind of mining infrared methane concentration detector is the utility model is related to, it belongs to fixation gas concentration measurement under mine
Technical field.
Background technology
At present, fixation methane concentration instrumentation only statistics have shown the function of methane concentration under the mine of in the market, work(
Can be relatively simple, without good human-computer interaction interface；In addition, the dust under colliery is big, bad environments, in this case
It can be easy to the phenomenon blocked occur for isolating methane transducer and extraneous diaphragm, will at this time if replaced not in time
The situation of the methane concentration inaccuracy of measurement is caused, consequence is extremely serious.For infrared methane sensor, due to the re-testing periods
Long, problem is even more serious.
The content of the invention
Existing in the prior art in order to solve the problems, such as, the utility model provides a kind of mining infrared methane concentration detector,
The concentration detector should use lattice lcd with Display of Chinese characters, can substantially increase the operability of instrument as medium is shown.
Technical solution is used by the present invention solves the above problems：A kind of mining infrared methane concentration detector, it is wrapped
Shell is included, air pump, methane transducer and detecting system, it further includes lattice lcd display, clock unit, absolute pressure sensor
Device, loudspeaker device and receiver of remote-control sytem；The front of the shell sets lattice lcd display, and top sets installation remote control reception
The receiver of remote-control sytem seat of device, lower part set junction block flange, and lower part both sides set loudspeaker device and probe and test chamber respectively, examine
Slowdown monitoring circuit is installed on the inside of shell；The detecting system includes air pump control unit, air pump, absolute pressure transducer, methane
Concentration sensor and test chamber；Air pump control unit receives the instruction of CPU main control units, and driving air pump work, is extracted in test chamber
Air, reduce in test chamber pressure and pressure difference formed on diaphragm, pressure difference is detected by absolute pressure transducer, then with instrument
Minimum pressure before table dispatches from the factory under the retaining pressure and normal work of detection and setting compares, and judges system by CPU main control units
System working status, when more than the retaining pressure of setting, then lattice lcd display is blocked with chinese disply waterproof ventilated membrane, and
There is music tip to replace diaphragm, in the minimum pressure set less than normal work, then show film detecting system failure.
The air pump control unit is electrically connected the pump DC-DC power source for ensureing pump work voltage stabilization, pump current-limiting circuit and prevents
The only pump startup compensation circuit of difficulty in starting.
The air pump extracts the air in the test chamber of sensing methane concentration device, then is detected by absolute pressure transducer
The pressure change of intracavitary, judges working status.
The lattice lcd display include menu show, the display unit of Display of Chinese characters, numeral and symbol, and use is distant
Control device is remotely controlled.
The clock unit and storage unit common protocol record warning message.
The beneficial effects of the utility model are：The outer casing frontispiece of this mining infrared methane concentration detector sets dot matrix liquid
Crystal display, top set the receiver of remote-control sytem seat of installation receiver of remote-control sytem, and lower part sets junction block flange, lower part both sides difference
Loudspeaker device and probe and test chamber are set, and detection circuit is installed on the inside of shell.Detecting system include air pump control unit,
Air pump, absolute pressure transducer, sensing methane concentration device and test chamber；Air pump control unit receives the instruction of CPU main control units, drives
Take offence pump work, extract the air in test chamber, reduce in test chamber pressure and pressure difference is formed on diaphragm, pass through absolute pressure
Sensor detects pressure difference.The concentration detector uses lattice lcd to be substantially increased as medium is shown with Display of Chinese characters
The operability of instrument；Meanwhile gauge internal is equipped with the system whether a detection methane transducer diaphragm blocks, if film
Piece blocks, instrument can on liquid crystal Display of Chinese characters warning message, and alarm is sent, for prompting changing diaphragm；Moreover,
Instrument also has the function of warning message storage, time clock feature, alarm clock music reminding and temperature BAP Barometric Absolute Pressure display function
Deng.
Brief description of the drawings
Fig. 1 is a kind of operation principle block diagram of mining infrared methane concentration detector.
Fig. 2 is a kind of front view of mining infrared methane concentration detector.
Fig. 3 is a kind of top view of mining infrared methane concentration detector.
Fig. 4 is a kind of side view of mining infrared methane concentration detector.
Fig. 5 is the A direction views in Fig. 2.
In figure：1st, air pump control unit, 2, air pump, 3, absolute pressure transducer, 4, sensing methane concentration device, 5, detection
Chamber, 6, pump DC-DC power source, 7, pump current-limiting circuit, 8, pump startup compensation circuit, 9, lattice lcd display, 10, remote controler, 11,
CPU main control units, 12, clock unit, 13, audio system, 14, storage unit, 15, frequency output circuitry, 16, communicating circuit,
17th, otic placode, 18, receiver of remote-control sytem seat, 18a, receiver of remote-control sytem, 19, shell, 20, front shroud, 21, flanged outer ring, 22, wiring
Seat flange, 23, loudspeaker device, 24, probe and test chamber.
Embodiment
Fig. 1 shows a kind of operation principle block diagram of mining infrared methane concentration detector.Illustrate each functional unit and
The connection status of circuit module.
Fig. 2,3,4,5 show a kind of structure chart of mining infrared methane concentration detector.
In figure, a kind of this mining infrared methane concentration detector includes shell 19, air pump 2, methane transducer 4, detection
System, lattice lcd display 9, clock unit 12, absolute pressure transducer 3, loudspeaker device 23 and receiver of remote-control sytem 18a.Outside
The front of shell 19 sets lattice lcd display 9, and top sets the receiver of remote-control sytem seat 18 of installation receiver of remote-control sytem 18a, lower part
Junction block flange 22 is set, and lower part both sides set loudspeaker device 23 and probe and test chamber 24 respectively, and detection circuit is installed on outer
The inside of shell 19.Detecting system includes air pump control unit 1, air pump 2, absolute pressure transducer 3,4 and of sensing methane concentration device
Test chamber 5；Air pump control unit 1 receives CPU main control units 11 and instructs, and driving air pump 2 works, and extracts the air in test chamber 5,
Pressure reduction in test chamber 5 is formed pressure difference on diaphragm, pressure difference is detected by absolute pressure transducer 3, then go out with instrument
Minimum pressure under the retaining pressure and normal work that detect and set before factory compares, and judges system by CPU main control units 11
Working status, when more than the retaining pressure of setting, then lattice lcd display 9 is blocked with chinese disply waterproof ventilated membrane, and
There is music tip to replace diaphragm, in the minimum pressure set less than normal work, then show film detecting system failure.
Air pump control unit 1 is electrically connected the pump DC-DC power source 6 for ensureing pump work voltage stabilization, pump current-limiting circuit 7 and prevents
The pump startup compensation circuit 8 of difficulty in starting.Air pump 2 extracts the air in the test chamber 5 of sensing methane concentration device 4, then by absolute
Pressure sensor 3 detects the pressure change in test chamber 5, judges working status.Lattice lcd display 9 shows comprising menu,
The display unit of Display of Chinese characters, numeral and symbol, and be remotely controlled using remote controler 10.Clock unit 12 is common with storage unit 14
Warning message is recorded with agreement.
Using above-mentioned technical solution, the specific work process of each several part is as follows：
1st, methane transducer film clogging detecting system
Detecting system is made of air pump motor control unit, air pump, absolute pressure sensor, and embedded main control unit passes through motor
Control unit control motor rotates, and air pump extracts the air of methane transducer intracavitary so that the pressure of intracavitary changes.In film
In the case of blocking and no blocking, the pressure on the inside of diaphragm is different, is carried out according to this feature before product export
Corresponding calibration, and thus judge diaphragm whether air is normal, whether diaphragm detecting system is working properly, gives corresponding Chinese characters
Remind.At the same time, power control unit has corresponding current-limiting circuit and starts compensation circuit.Prevent from exceeding intrinsic safety electric source scope
With electric motor starting difficulty etc..
2nd, Dot-Matric LCD Display
CH_4 detection instrument uses 12864 low-power consumption lattice lcds, can have menu function with Display of Chinese characters, this to use
Family very easily can be configured the parameter of instrument using remote controler, especially in the field demarcated to methane transducer
Close, the giant-screen of lattice lcd causes calibration process to become simpler.
3rd, warning message stores
Warning message of the AT24c512 eeprom chips to instrument has been used in CH_4 detection instrument（Methane during alarm
Concentration, time of fire alarming are stored, and can at most store 5946 warning messages.
4th, methane concentration detects
Embedded main control unit goes to read the methane concentration value in methane transducer, methane transducer every a set time
Good operation stability, the precision of the sensor measurement after non-liner revision is high, and measurement error is equal to the positive and negative of measurement true value
0.05%
5th, time clock feature
Clock chip uses PCF8563, and current time can be shown on lattice lcd, can set three alarm clocks and two
A diaphragm detection time, when current time reaches alarm time, music is sounded；When current time reaches diaphragm detection time
When, instrument starts to detect the state that diaphragm blocks.
6th, remote control input
User can be set meter parameter by remote control and instrument is demarcated.
7th, rate-adaptive pacemaker
CH_4 detection instrument exports the frequency signal of 200Hz to 1000Hz according to the methane concentration of measurement, frequency signal and
Instrument is in isolation.
8th, audio system
Audio system is using the toy trumpet of 8 ohm of 0.5w, and can sound music when starting shooting and detecting membrane failure；In first
When alkane concentration exceedes the warning concentration of setting, the alarm of interruption can be sent.
9th, communication function
CH_4 detection instrument can be communicated using 485 communication plans of isolation with other instrument or host.
Claims (5)
1. a kind of mining infrared methane concentration detector, it includes shell（19）, air pump（2）, methane transducer（4）And detection system
System, it is characterized in that：It further includes lattice lcd display（9）, clock unit（12）, absolute pressure transducer（3）, loudspeaker device
（23）And receiver of remote-control sytem（18a）；The shell（19）Front set lattice lcd display（9）, top sets installation distant
Control receiver（18a）Receiver of remote-control sytem seat（18）, lower part sets junction block flange（22）, lower part both sides set loudspeaker to fill respectively
Put（23）With probe and test chamber（24）, detection circuit is installed on shell（19）Inside；The detecting system includes air pump control
Unit processed（1）, air pump（2）, absolute pressure transducer（3）, sensing methane concentration device（4）And test chamber（5）；Air pump control unit
（1）Receive CPU main control units（11）Instruction, drives air pump（2）Work, extracts test chamber（5）In air, make test chamber（5）
Middle pressure reduces and pressure difference is formed on diaphragm, passes through absolute pressure transducer（3）Pressure difference is detected, then is detected before dispatching from the factory with instrument
Compare with the minimum pressure under the retaining pressure and normal work of setting, by CPU main control units（11）Judgement system work shape
State, when more than the retaining pressure of setting, then lattice lcd display（9）Blocked with chinese disply waterproof ventilated membrane, and have sound
Diaphragm is replaced in happy prompting, in the minimum pressure set less than normal work, then shows film detecting system failure.
2. a kind of mining infrared methane concentration detector according to claim 1, it is characterized in that：The air pump control unit
（1）It is electrically connected the pump DC-DC power source for ensureing pump work voltage stabilization（6）, pump current-limiting circuit（7）With prevent the pump of difficulty in starting from opening
Dynamic compensation circuit（8）.
3. a kind of mining infrared methane concentration detector according to claim 1, it is characterized in that：The air pump（2）Extract
Sensing methane concentration device（4）Test chamber（5）In air, then by absolute pressure transducer（3）Detect test chamber（5）Interior pressure
Power changes, and judges working status.
4. a kind of mining infrared methane concentration detector according to claim 1, it is characterized in that：The Dot-Matric LCD Display
Device（9）Shown comprising menu, the display unit of Display of Chinese characters, numeral and symbol, and use remote controler（10）It is remotely controlled.
5. a kind of mining infrared methane concentration detector according to claim 1, it is characterized in that：The clock unit（12）
With storage unit（14）Common protocol records warning message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721286013.5U CN207318335U (en) | 2017-10-08 | 2017-10-08 | A kind of mining infrared methane concentration detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721286013.5U CN207318335U (en) | 2017-10-08 | 2017-10-08 | A kind of mining infrared methane concentration detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207318335U true CN207318335U (en) | 2018-05-04 |
Family
ID=62429207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721286013.5U Expired - Fee Related CN207318335U (en) | 2017-10-08 | 2017-10-08 | A kind of mining infrared methane concentration detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207318335U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366682A (en) * | 2020-03-10 | 2020-07-03 | 广东小天才科技有限公司 | Calibration method and device of gas sensor, electronic equipment and storage medium |
-
2017
- 2017-10-08 CN CN201721286013.5U patent/CN207318335U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366682A (en) * | 2020-03-10 | 2020-07-03 | 广东小天才科技有限公司 | Calibration method and device of gas sensor, electronic equipment and storage medium |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180504 Termination date: 20211008 |
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| CF01 | Termination of patent right due to non-payment of annual fee |