CN110308106A - A kind of laser gas detection device having range measurement function - Google Patents
A kind of laser gas detection device having range measurement function Download PDFInfo
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- CN110308106A CN110308106A CN201910668778.2A CN201910668778A CN110308106A CN 110308106 A CN110308106 A CN 110308106A CN 201910668778 A CN201910668778 A CN 201910668778A CN 110308106 A CN110308106 A CN 110308106A
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- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 238000005259 measurement Methods 0.000 title claims abstract description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000004364 calculation method Methods 0.000 claims abstract description 21
- 238000010183 spectrum analysis Methods 0.000 claims abstract description 19
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 2
- 230000000541 pulsatile effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 36
- 238000011835 investigation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005355 Hall effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/38—Investigating fluid-tightness of structures by using light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A kind of laser gas detection device having range measurement function is related to laser gas detecting instrument technical field.The present invention is made of laser gas detector and Hall-type mileometer；Laser gas detector includes power module, laser generator, laser detector, spectral analysis module, alarm signal generation module；Hall-type mileometer includes magnet, inductor, wheel diameter setting module, distance calculation module.Realize that the present invention is more direct effective and accurately obtains distance of the methane gas leakage point apart from transport carrier, that is, distance of the methane gas leak point apart from laser gas detector, the present invention is simple and practical, easy to spread.
Description
Technical field
This patent is related to laser gas detecting instrument technical field.
Background technique
The inspection of Urban Pipeline Carrying Natural Gas is an eternal project, as urban construction continues to develop, history pipe network and new
The pipe network of construction, it requires to carry out leakage investigation, inspection, the safe handling of combustion gas high for megalopolis, population density
It is more important.
Present high pressure pipe network leakage investigation, the rank grass-roots unit, branch company of gas company are mainly directed towards by taking Beijing as an example
City mesolow pipeline.Mesolow pipeline be mainly distributed on the street in city, lane, side street lane, residential area etc. regions,
Large size detection motor vehicle, not walking area.And the walking small handcart type gas leakage patrol detector that we use at present, exist
The big problem of hysteresis effect, result in this way pipeline network leak investigation efficiency it is relatively low.According to the entire institute of operation and maintenance in 1 year
Data tracking, municipal road pipeline network leak amount accounting is about 22%, and low pressure garden spool net leakage rate accounting is about 78%, so low
Press garden line pipeline network leak number accounting or very high.And the leakage of garden line is most in residential block, social influence is larger.
So low pressure garden line leaks locating accuracy, and it is all always urgently to be resolved for how improving leakage investigation efficiency ratio
The problem of.
In the patent applied before inventor, application No. is 201910024799.0, application is entitled " to be had distance to mend
Repay the laser gas detection device of function and concentration offsets function " in be able to achieve and have compensated distance function and concentration in vehicle-mounted
When the laser gas detection device of compensation function is out of service, provides automatically and vehicle-mounted after parking have compensated distance function and dense
The laser gas detection device of compensation function is spent at a distance from leakage point, but " has compensated distance function and concentration offsets function
Laser gas detection device " the shortcomings that be speed required for compensated distance module be preset, it is therefore desirable to carrier
It is moved ahead with setting speed, the leakage point position after compensated distance is made due to the certainly existing property of speed-raising and deceleration interval is simultaneously not allowed
Really.
Based on the deficiencies of the prior art, a kind of laser gas detection device having range measurement function of the invention will be surveyed
Away from the method that function uses warning information combination Hall sensor, Hall sensor is started by triggering warning information and starts to calculate
Distance effectively and accurately show that leakage point distance is sharp by the way that method that Hall sensor reads distance is more direct when parking
The distance of light gas detection apparatus, while reducing and realizing have compensated distance function and concentration offsets function in the prior art
The complexity of laser gas detection device.
Shared technology explanation
With the continuous development of electronic technology, Hall sensor is made using Hall effect and has evolved into a magnetic numerous in variety
Product sensor race, and be widely used.Hall sensor is a kind of Magnetic Sensor, has small in size, light-weight, the longevity
Life length, easy for installation, small power consumption, frequency is high, and vibration resistance is not afraid of the spy of the pollution or corrosion of dust, greasy dirt, steam and salt fog etc.
Therefore point is widely used in fields such as measurement, automation, computer and information technologies.
The degree of automation of automobile is higher and higher, and mileometer is taken by electronic component formula mileometer when traditional machinery
In generation, since Hall sensor has many advantages, such as that anti-electromagnetic interference capability is stronger, Hall-type mileometer is widely used in automobile, electronic
In bicycle art, Hall-type mileometer is using the range measurement principle of Hall effect: magnet steel being fitted on iron, vehicle is fixed on
The a certain position of wheel, hall sensor are fixed on above vehicle frame.The every rotation of wheel one week, magnet steel is primary by hall sensor,
As soon as counter counts the pulse with regard to generating a pulse signal, mileage number is calculated indirectly by vehicle wheel rotational speed.
Summary of the invention
In view of the deficiencies in the prior art, a kind of laser gas detection device for having range measurement function of the invention is realized
It is made of laser gas detector and Hall-type mileometer；Laser gas detector includes power module, laser generator, laser
Detector, spectral analysis module, alarm signal generation module；Hall-type mileometer includes magnet, inductor, wheel diameter setting
Module, distance calculation module；
Power module is used for as laser generator, laser detector, spectral analysis module, the power supply of alarm signal generation module, electricity
Source module calculates mould by the distance that the serial ports that laser gas detector is connected with Hall-type mileometer is Hall-type mileometer
Block and inductor power supply；
The laser beam that laser generator is 1653nm for generation wavelength, energy are less than 10mw, line width 2MHz；
Laser detector is used to receive the laser beam of the wavelength 1653nm by diffusing reflection return, and by the laser beam of return
Send spectral analysis module to；
The laser intensity and laser detector that spectral analysis module is emitted according to Bill's Lambert law by laser generator are received
Laser intensity calculates the concentration of methane gas；Spectral analysis module sends the concentration of methane gas to alarm signal and generates mould
Block；
Alarm signal generation module records the threshold value of concentration of methane gas, when the methane gas that spectral analysis module is sent is dense
When degree is greater than threshold value, alarm signal generation module, which issues, detects the alarm signal of methane leakage, and by the alarm of methane leakage
Signal sends the distance calculation module of Hall-type mileometer to；
Before the magnet of Hall sensor is mounted on carrying laser gas detector and the transport carrier of Hall-type mileometer traveling
On wheel spoke；Inductor is fixed on transport carrier front fork；Magnet is adjusted at a distance from inductor, is controlled between 10-15mm；
The wheel diameter for measuring transport carrier, the wheel diameter of transport carrier is inputted by wheel diameter setting module, and wheel is straight
Diameter setting module sends the wheel diameter of transport carrier to distance calculation module；
Distance calculation module receives the circle number of start recording transport carrier wheels travel after the alarm signal of methane leakage, and transport carries
Pulsatile once signal is exported from inductor to distance calculation module when the circle number of tool wheels travel passes through inductor from magnet every time
To complete once to count；Distance calculation module calculates the wheel circumference of transport carrier by the wheel diameter of transport carrier, and makes
With the wheel circumference of transport carrier multiplied by the circle number of transport carrier wheels travel, obtain transport carrier apart from methane gas leakage point
Distance and distance of the transport carrier apart from methane gas leakage point is shown by display device.
Beneficial effect
Start to calculate distance by the distance calculation module that triggering warning information starts Hall-type mileometer, when parking passes through reading
The method of distance is more direct effective and accurately obtains distance of the methane gas leakage point apart from transport carrier, that is, first
Distance of the alkane gas leakage point apart from laser gas detector, the present invention is simple and practical, easy to spread.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific implementation
Referring to Fig. 1, realize that a kind of laser gas detection device for having range measurement function of the invention is detected by laser gas
Device A and Hall-type mileometer B composition；Laser gas detector A includes power module 10, laser generator 11, laser detector
12, spectral analysis module 13, alarm signal generation module 14；Hall-type mileometer B includes magnet 20, and inductor 21, wheel is straight
Diameter setting module 22, distance calculation module 23；
Power module 10 is used to be laser generator 11, laser detector 12, spectral analysis module 13, alarm signal generation module
14 power supplies, power module 10 are Hall-type mileometer by the serial ports that laser gas detector A is connected with Hall-type mileometer B
The distance calculation module 23 and inductor 21 of B is powered；
The laser beam that laser generator 11 is 1653nm for generation wavelength, energy are less than 10mw, line width 2MHz；
Laser detector 12 is used to receive the laser beam of the wavelength 1653nm by diffusing reflection return, and by the laser light of return
Beam sends spectral analysis module 13 to；
The laser intensity and laser detector that spectral analysis module 13 is emitted according to Bill's Lambert law by laser generator receive
Laser intensity calculate the concentration of methane gas；Spectral analysis module 13 sends the concentration of methane gas to alarm signal and produces
Raw module 14；
Alarm signal generation module 14 records the threshold value of concentration of methane gas, when the methane gas that spectral analysis module 13 is sent
When bulk concentration is greater than threshold value, alarm signal generation module 14 issues the alarm signal of methane leakage, and by the alarm of methane leakage
Signal sends the distance calculation module 23 of Hall-type mileometer B to；
The magnet 20 of Hall sensor B is mounted on the transport carrier of carrying laser gas detector A and Hall-type mileometer B traveling
Front-wheel spoke on；Inductor 21 is fixed on transport carrier front fork；Magnet 20 is adjusted at a distance from inductor 21, control exists
Between 10-15mm；
The wheel diameter for measuring transport carrier inputs the wheel diameter of transport carrier, wheel by wheel diameter setting module 22
Diameter setting module 22 sends the wheel diameter of transport carrier to distance calculation module 23；
Distance calculation module 23 receives the circle number of start recording transport carrier wheels travel after the alarm signal of methane leakage, transport
One is exported from inductor 21 to distance calculation module 23 when the circle number of carrier wheels travel passes through inductor 21 from magnet 20 every time
Subpulse signal is completed once to count；Distance calculation module 23 calculates the vehicle of transport carrier by the wheel diameter of transport carrier
Perimeter is taken turns, and obtains transport carrier apart from first multiplied by the circle number of transport carrier wheels travel using the wheel circumference of transport carrier
The distance of alkane gas leakage point simultaneously shows distance of the transport carrier apart from methane gas leakage point by display device E.
Barrier C shown in Fig. 1 and tested air mass D has the working principle of demonstration laser generator and laser detector
Purposes.
Claims (1)
1. a kind of laser gas detection device for having range measurement function is by laser gas detector and Hall-type mileometer group
At；Laser gas detector includes power module, laser generator, laser detector, spectral analysis module, alarm signal generation
Module；Hall-type mileometer includes magnet, inductor, wheel diameter setting module, distance calculation module；
Power module is used for as laser generator, laser detector, spectral analysis module, the power supply of alarm signal generation module, electricity
Source module calculates mould by the distance that the serial ports that laser gas detector is connected with Hall-type mileometer is Hall-type mileometer
Block and inductor power supply；
The laser beam that laser generator is 1653nm for generation wavelength, energy are less than 10mw, line width 2MHz；
Laser detector is used to receive the laser beam of the wavelength 1653nm by diffusing reflection return, and by the laser beam of return
Send spectral analysis module to；
The laser intensity and laser detector that spectral analysis module is emitted according to Bill's Lambert law by laser generator are received
Laser intensity calculates the concentration of methane gas；Spectral analysis module sends the concentration of methane gas to alarm signal and generates mould
Block；
Alarm signal generation module records the threshold value of concentration of methane gas, when the methane gas that spectral analysis module is sent is dense
When degree is greater than threshold value, alarm signal generation module, which issues, detects the alarm signal of methane leakage, and by the alarm of methane leakage
Signal sends the distance calculation module of Hall-type mileometer to；
Before the magnet of Hall sensor is mounted on carrying laser gas detector and the transport carrier of Hall-type mileometer traveling
On wheel spoke；Inductor is fixed on transport carrier front fork；Magnet is adjusted at a distance from inductor, is controlled between 10-15mm；
The wheel diameter for measuring transport carrier, the wheel diameter of transport carrier is inputted by wheel diameter setting module, and wheel is straight
Diameter setting module sends the wheel diameter of transport carrier to distance calculation module；
Distance calculation module receives the circle number of start recording transport carrier wheels travel after the alarm signal of methane leakage, and transport carries
Pulsatile once signal is exported from inductor to distance calculation module when the circle number of tool wheels travel passes through inductor from magnet every time
To complete once to count；Distance calculation module calculates the wheel circumference of transport carrier by the wheel diameter of transport carrier, and makes
With the wheel circumference of transport carrier multiplied by the circle number of transport carrier wheels travel, obtain transport carrier apart from methane gas leakage point
Distance and distance of the transport carrier apart from methane gas leakage point is shown by display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910668778.2A CN110308106A (en) | 2019-07-23 | 2019-07-23 | A kind of laser gas detection device having range measurement function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910668778.2A CN110308106A (en) | 2019-07-23 | 2019-07-23 | A kind of laser gas detection device having range measurement function |
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| Publication Number | Publication Date |
|---|---|
| CN110308106A true CN110308106A (en) | 2019-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910668778.2A Pending CN110308106A (en) | 2019-07-23 | 2019-07-23 | A kind of laser gas detection device having range measurement function |
Country Status (1)
| Country | Link |
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| CN (1) | CN110308106A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091415A (en) * | 2014-07-27 | 2014-10-08 | 北京航星网讯技术股份有限公司 | Laser methane gas leakage detection device with photographing function and laser methane gas leakage detection method |
| CN109630907A (en) * | 2019-02-27 | 2019-04-16 | 北京航星网讯技术股份有限公司 | Vehicle-mounted laser CH_4 detection device |
| CN109632701A (en) * | 2019-01-10 | 2019-04-16 | 北京航星网讯技术股份有限公司 | The laser gas detection device for having compensated distance function and concentration offsets function |
-
2019
- 2019-07-23 CN CN201910668778.2A patent/CN110308106A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091415A (en) * | 2014-07-27 | 2014-10-08 | 北京航星网讯技术股份有限公司 | Laser methane gas leakage detection device with photographing function and laser methane gas leakage detection method |
| CN109632701A (en) * | 2019-01-10 | 2019-04-16 | 北京航星网讯技术股份有限公司 | The laser gas detection device for having compensated distance function and concentration offsets function |
| CN109630907A (en) * | 2019-02-27 | 2019-04-16 | 北京航星网讯技术股份有限公司 | Vehicle-mounted laser CH_4 detection device |
Non-Patent Citations (1)
| Title |
|---|
| 韩向可 等: "《传感器原理与应用》", 30 September 2016 * |
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Application publication date: 20191008 |