CN205538667U - Gas detection device - Google Patents
Gas detection device Download PDFInfo
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- CN205538667U CN205538667U CN201620296412.9U CN201620296412U CN205538667U CN 205538667 U CN205538667 U CN 205538667U CN 201620296412 U CN201620296412 U CN 201620296412U CN 205538667 U CN205538667 U CN 205538667U
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- Prior art keywords
- gas
- control device
- display device
- laser
- detecting device
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Abstract
The utility model discloses a gas detection device, include: laser emitter, controlling means, laser detector, display device and power supply unit, power supply unit with controlling means is connected, controlling means with laser emitter, laser detector control connection, display device with controlling means signal connection, controlling means accepts and handles the data message that laser detector detected to data information transmission after will handling extremely display device. The utility model relates to a safe in utilization, response rapidly, detect accurate efficient gas detection device, the testing result precision is high, and is with a high credibility, has overcome the chemical approach's among the prior art instrument, need often mark the calibration, response speed receives other gas composition and surface pollution's shortcomings such as cross interference slowly, easily.
Description
Technical field
This utility model relates to gas detection technology field, is specifically related to a kind of application tunable semiconductor laser
Absorption spectroscopy techniques carries out the gas-detecting device of methane leakage detection.
Background technology
Methane has a wide range of applications at nature.Methane, as fuel, is natural gas, biogas, casing-head gas
And the main component of coal mine gallery gas, can be as the thermal value measurement ideal fuels for water heater or gas stove.
In addition to for fuel, methane is also can to obtain charcoal after a kind of important chemical raw material, such as methane pyrolytic
Black, white carbon black may be used for the additive of pigment, ink, paint and rubber etc..Methane can also is that manufacture hydrogen,
The raw material of the materials such as carbon monoxide, acetylene, hydrocyanic acid and formaldehyde, is also solaode, amorphous silicon film gas
As the carbon source of chemical deposition, and the raw materials for production of medication chemistry synthesis.
Although the application of methane is very extensive, but methane is a kind of flammable explosive gas.In methane production, add
In work and transportation, if methane leaks, and when concentration reaches explosion limit, meeting fire can explode
Cause serious loss, therefore need methane is carried out tight prison in methane production manufacture and transportation
Control.Although prior art has methane oxidizing archaea detecting system in the production of methane and processing enterprise, but fixing
The sensor of configuration cannot provide the specified place of methane leakage.And length such for natural-gas transfer pipeline
The pipeline inspection of distance conveying needs substantial amounts of manpower and materials.Chemical detection method, electrochemical sensor etc. pass
System detection of natural gas equipment needs to contact with methane to be measured, and the sensor that distribution is arranged also cannot accurately determine sky
The concrete leak point that so feed channel is revealed.When there is natural gas leaking, testing staff needs to enter hazards loops
Border is detected methane concentration, there is certain risk.And the instrument of chemical method is due to sensor self
Poisoning problem, needs often to carry out demarcating calibration, and accuracy of detection cannot ensure, not only response speed is slow, and
And the shortcoming such as the cross interference being easily subject to other gas componant and surface contamination.
In view of this, special proposition this utility model.
Utility model content
This utility model is intended to solve defect present in prior art to a certain extent, it is provided that a kind of sensitivity
Height, reacts gas-detecting device timely, safe to use.
For solving the problems referred to above, this utility model adopts the following technical scheme that a kind of gas-detecting device, bag
Include: generating laser, control device, laser detector, display device and electric supply installation；Described for Denso
Putting and be connected with described control device, described control device controls with described generating laser, laser detector
Connecting, described display device is connected with described control device signal；Described control device accepts and processes described
The data message that laser detector detects, and the data information transfer after processing is to described display device.
The gas-detecting device that this utility model provides is based on Spectrum Absorption Principle, by controlling device to swashing
Light device carries out current-modulation, after the laser making laser instrument send specific wavelength passes gas-monitoring region, arrives
Reflecting surface is also reflected back toward laser detector, if there is detected feature gas in the gas zones that passes of laser
Body, laser will be by this GAS ABSORPTION, and characteristic gas concentration is the highest, and absorbtivity is the biggest, and laser detector will prison
Measuring the change of laser intensity and feed back to control device and process, final signal output will to display device
Concentration results shows.Overcome chemical detection method in prior art, electrochemical sensor safety low,
Accuracy of detection is inaccurate, response speed is slow, equipment is easily subject to the shortcomings such as interference.
According to an example of the present utility model, described control device include single chip machine controlling circuit and control by
Key circuit, described single chip machine controlling circuit is connected with described key control circuit.
According to an example of the present utility model, described single chip machine controlling circuit includes current-modulation module, A/D
Transducer and single-chip microcomputer, described electric current debugging module carries out current-modulation to generating laser, and described A/D turns
The information that laser detector is detected by parallel operation is converted into digital signal, and sends into described single-chip microcomputer and process,
Information after described single-chip microcomputer will process is transmitted to described display device.
According to an example of the present utility model, also include range finder module, described range finder module and described control
Device is connected.
According to an example of the present utility model, described control device is connected by bluetooth with described display device
Connect.
According to an example of the present utility model, described display device is mobile phone.
According to an example of the present utility model, described electric supply installation include being sequentially connected connect charging circuit,
Battery, voltage conversion circuit and cradle, described voltage conversion circuit is connected with described control circuit, institute
State charging circuit to be connected with described cradle.
According to an example of the present utility model, also include filming apparatus, described filming apparatus and described control
Device is connected.
According to an example of the present utility model, also include alarm device, described alarm device and described control
Device is connected.
According to an example of the present utility model, also include that GPS, described GPS are connected with described control device
Connect.
According to an example of the present utility model, also include that data transmission device, described data transmission device divide
Not being connected with described control device and extraneous server, described extraneous server includes that data set analysis takes
Business device.
Additional aspect of the present utility model and advantage will part be given in the following description, and part will be from following
Description in become obvious, or recognized by practice of the present utility model.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram of a kind of gas-detecting device provided by the utility model.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, carries out clear, complete description to the technical scheme in embodiment, below implements
Example is used for illustrating this utility model, but is not limited to scope of the present utility model.
A kind of gas-detecting device as shown in Figure 1, including: housing (not shown), generating laser, control
Device processed, laser detector, display device and electric supply installation；Electric supply installation is connected with controlling device, control
Device processed controls to be connected with generating laser, laser detector.
In the present embodiment, gas-detecting device is designed as hand-held, i.e. hull shape is set to hand-held,
Housing upper is Laser emission, receiving port, and bottom is handle and button, is additionally provided with a cradle (not
Illustrate), cradle removably connects with the lower part of housing, the flexibility ratio that hand-held gas-detecting device uses
It is better than fixed test device of the prior art.Preferably, in this example it is shown that device is mobile phone,
Display device is connected by Bluetooth signal with controlling device；Control device accept and process laser detector detection
Arrive data message, and will process after data information transfer to display device.Using hand-held to pass through will
Beam of laser direct detection point, can quickly measure the gas concentration in 0.5-30 rice distance.By to impact point,
As laser is launched on gas pipeline, ceiling, body of wall, floor, ground etc., then detect and reflect from impact point
The signal of the laser returned, can measure the air mass concentration being distributed between this equipment and impact point path.
In the present embodiment, control device include single chip machine controlling circuit and control key circuit, single-chip microcomputer control
Circuit processed is connected with key control circuit, and user manipulates whole device by controlling key circuit.Single-chip microcomputer
Control circuit includes current-modulation module, A/D converter and single-chip microcomputer, and electric current debugging module is to generating laser
Carrying out current-modulation, the information that laser detector is detected by A/D converter is converted into digital signal, and sends into
Single-chip microcomputer processes, and the information after single-chip microcomputer will process is transmitted to described display device.
In the present embodiment, gas-detecting device also includes range finder module, range finder module and Single-chip Controlling electricity
Road is connected, and range finder module may determine that the position of gas-detecting device distance reflecting surface, it can in addition contain enter
Row meansigma methods converts.Preferably, the instrument that range finder module uses is phase laser distance measurement instrument, phase ranging
Instrument is that laser beam carries out high frequency modulated, and measures Phase delay produced by modulation light round trip, then root
According to the wavelength of modulation light, convert the distance representated by this phase contrast.
In the present embodiment, electric supply installation includes being sequentially connected charging circuit, battery and the D/C voltage conversion connect
Circuit, D/C voltage change-over circuit is connected with control circuit, charging circuit and cradle, and cradle has charging
Instruction and anti-overcharge function.
As the further preferred embodiment of the present embodiment, gas-detecting device also includes filming apparatus (not
Illustrate), filming apparatus is connected with controlling device.Environment can be shot by filming apparatus, determines leakage
Position.
As the further preferred embodiment of the present embodiment, gas-detecting device also includes alarm device (not
Illustrate), alarm device is connected with controlling device.Hazard index is reached once the gas concentration detected,
Sending alarm signal in time, staff takes safety measures according to alarm signal.
As the further preferred embodiment of the present embodiment, gas-detecting device also includes GPS (not shown),
GPS is connected with controlling device.GPS alignment system can improve the safety coefficient of product, prevents data from losing
Lose.
As the further preferred embodiment of the present embodiment, gas-detecting device also includes data transmission device
(not shown), data transmission device is connected with control device and extraneous server respectively, data transmission device
By being connected with extraneous server by the way of wifi or line, it is preferred that extraneous server is data set
Close Analysis server.Data transmission device is utilized to carry out data transmission, by the data very first time with extraneous terminal
Feed back to terminal, carry out the data set analysis of data.
It is further elaborated below in conjunction with operation principle of the present utility model, it should be noted that below
Illustrate as a example by methane gas, but also apply be applicable to the detection of other gases.
The gas-detecting device that this utility model provides is based on Spectrum Absorption Principle, by controlling device to swashing
Light device carries out current-modulation, after the laser making laser instrument send specific wavelength passes methane gas monitored area,
Arrive reflecting surface and be also reflected back toward laser detector, if the gas zones that passes of laser exists detected spy
Levying gas, laser will be by this GAS ABSORPTION, and characteristic gas concentration is the highest, and absorbtivity is the biggest, laser detector
To monitor the change of laser intensity and feed back to control device and process, final signal exports to showing dress
Put and concentration results is shown.
The measurement scope of this gas-detecting device: 0-40000ppm m, the most measurable concentration accumulated value is maximum
For 40000ppm m.The laser of detectable concentration is passive detection body, and when patrolling and examining, investigative range is wide, permissible
Accomplish exhaustive leakage point, while even determining leakage point concentration, with the shape of detailed video image report
Formula carries out record to data.Realize the concentration position monitoring of methane oxidizing archaea rapidly and accurately, comply fully with natural
The demand of detection in the application of gas, oil gas field, this utility model mainly transmits optical signal by laser instrument, when dense
When degree exceeds standard, can synchronize to monitor concentration, field conditions image in real time, accurately measure concentration of methane gas simultaneously
And leak point, and then determine leakage point concentration information and surrounding, realize methane etc. rapidly and accurately and be harmful to
The detection of gas leakage.Overcome the instrument of chemical method of the prior art, need accuracy of detection low, warp
Often carrying out demarcating calibration, response speed is slow, be easily subject to the cross interference of other gas componant and surface contamination
Etc. shortcoming.
It is only that preferred embodiment of the present utility model is described it should be noted that above, the most right
Spirit and scope of the present utility model are defined, on the premise of without departing from this utility model design philosophy,
The changes and improvements that the technical solution of the utility model is made by those skilled in the art, belong to this practicality new
The protection domain of type.
Claims (10)
1. a gas-detecting device, it is characterised in that including: generating laser, control device, laser
Detector, display device and electric supply installation；Described electric supply installation is connected with described control device, described control
Device processed controls to be connected with described generating laser, laser detector, and described display device controls dress with described
Confidence number connects；Described control device accepts and processes the data message that described laser detector detects, and
Data information transfer after processing is to described display device.
Gas-detecting device the most according to claim 1, it is characterised in that described control device includes
Single chip machine controlling circuit and control key circuit, described single chip machine controlling circuit is connected with key control circuit.
Gas-detecting device the most according to claim 2, it is characterised in that described Single-chip Controlling electricity
Road includes that generating laser is entered by current-modulation module, A/D converter and single-chip microcomputer, described electric current debugging module
Row current-modulation, the information that laser detector is detected by described A/D converter is converted into digital signal, and
Sending into described single-chip microcomputer to process, the information after described single-chip microcomputer will process is transmitted to described display device.
Gas-detecting device the most according to claim 1, it is characterised in that described control device and institute
State display device to be connected by bluetooth.
Gas-detecting device the most according to claim 4, it is characterised in that described display device is hands
Machine.
6. according to the gas-detecting device described in any one of claim 1-5, it is characterised in that also include surveying
Away from module, described range finder module is connected with described control device.
7. according to the gas-detecting device described in any one of claim 1-5, it is characterised in that also include clapping
Taking the photograph device, described filming apparatus is connected with described control device.
8. according to the gas-detecting device described in any one of claim 1-5, it is characterised in that also include report
Alarm device, described alarm device is connected with described control device.
9. according to the gas-detecting device described in any one of claim 1-5, it is characterised in that also include GPS,
Described GPS is connected with described control device.
10. according to the gas-detecting device described in any one of claim 1-5, it is characterised in that also include number
According to transmitting device, described data transmission device is connected with described control device and extraneous server respectively, institute
State extraneous server and include data set analysis server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620296412.9U CN205538667U (en) | 2016-04-07 | 2016-04-07 | Gas detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620296412.9U CN205538667U (en) | 2016-04-07 | 2016-04-07 | Gas detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205538667U true CN205538667U (en) | 2016-08-31 |
Family
ID=56791305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620296412.9U Expired - Fee Related CN205538667U (en) | 2016-04-07 | 2016-04-07 | Gas detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205538667U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940294A (en) * | 2017-03-24 | 2017-07-11 | 北京华夏艾科激光科技有限公司 | A kind of colliery wireless laser formula methane analyzer and assay method |
| CN108717051A (en) * | 2018-06-12 | 2018-10-30 | 武汉米字能源科技有限公司 | A kind of TDLAS is combined the apparatus and method of survey heating value of natural gas with optoacoustic spectroscopy |
| CN109030374A (en) * | 2018-08-16 | 2018-12-18 | 上海禾赛光电科技有限公司 | Data managing method and data management terminal for laser gas detector |
-
2016
- 2016-04-07 CN CN201620296412.9U patent/CN205538667U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940294A (en) * | 2017-03-24 | 2017-07-11 | 北京华夏艾科激光科技有限公司 | A kind of colliery wireless laser formula methane analyzer and assay method |
| CN108717051A (en) * | 2018-06-12 | 2018-10-30 | 武汉米字能源科技有限公司 | A kind of TDLAS is combined the apparatus and method of survey heating value of natural gas with optoacoustic spectroscopy |
| CN108717051B (en) * | 2018-06-12 | 2023-09-22 | 武汉米字能源科技有限公司 | Device and method for measuring natural gas calorific value by combining TDLAS (tunable diode laser absorption spectroscopy) and photoacoustic spectroscopy |
| CN109030374A (en) * | 2018-08-16 | 2018-12-18 | 上海禾赛光电科技有限公司 | Data managing method and data management terminal for laser gas detector |
| US11867816B2 (en) | 2018-08-16 | 2024-01-09 | Hesai Technology Co., Ltd. | Laser gas detector and laser gas detection system |
| US11867815B2 (en) | 2018-08-16 | 2024-01-09 | Hesai Technology Co., Ltd. | Laser gas detector and laser gas detection system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20190407 |