CN110687059A - Remote sensing detection device and detection method for automobile exhaust - Google Patents
Remote sensing detection device and detection method for automobile exhaust Download PDFInfo
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- CN110687059A CN110687059A CN201910992792.8A CN201910992792A CN110687059A CN 110687059 A CN110687059 A CN 110687059A CN 201910992792 A CN201910992792 A CN 201910992792A CN 110687059 A CN110687059 A CN 110687059A
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- 238000005259 measurement Methods 0.000 claims description 43
- 238000012360 testing method Methods 0.000 claims description 30
- 230000003287 optical effect Effects 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 3
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- 230000010354 integration Effects 0.000 abstract description 7
- 239000000779 smoke Substances 0.000 description 6
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- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 2
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- 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
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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- 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
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
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- 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
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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention relates to the technical field of remote sensing detection of automobile exhaust, in particular to a remote sensing detection device and a detection method of the automobile exhaust, wherein the device comprises a measuring main machine and a measuring auxiliary machine; the measuring main machine and the measuring auxiliary machine are arranged in parallel in an aligned mode; the measuring host comprises three main adjusting rods, a host case, a green light receiving module, a transmitting end light chamber module and a red light speed measuring module; the three main adjusting rods are respectively positioned on two sides of the front end and the middle part of the rear end of the main case; the main case is sleeved on the three main adjusting rods through three adjusting rod sleeves respectively, and the green light receiving module is positioned at the left part of the main case and used for receiving green light signals; the transmitting end light chamber module is positioned at the left part of the main case and is used for transmitting light source signals; the red light speed measuring module is arranged at the bottom of the main case and is used for carrying out red light speed measuring detection; the measuring auxiliary machine is matched with the measuring main machine. The light source integration is realized, the light path alignment is convenient, the light source separation is realized by the beam splitting unit, and the detection precision is improved; the movable positioning device is convenient to move, adjust and position and is convenient to operate.
Description
Technical Field
The invention relates to the technical field of remote sensing detection of automobile exhaust, in particular to a remote sensing detection device and a detection method for automobile exhaust.
Background
In recent years, with the rapid development of national economy, the quantity of motor vehicles in China is remarkably increased, and the negative influence of motor vehicle tail gas on the atmospheric environment is increasingly serious. Especially on the roads in urban areas, the traffic jam caused by the sudden increase of the number of motor vehicles further aggravates the harm of the tail gas of the motor vehicles. Therefore, it is very important to detect pollutants in the exhaust of motor vehicles, especially in the exhaust of motor vehicles running on urban main roads. The detection principle of the tail gas is as follows: the detection light emitted by the radiation source is directly received by the light receiving device after passing through the tail gas smoke mass or is reflected by the reflector, the light intensity of the light received by the light receiving device is weakened due to the absorption of high-concentration pollutants in the smoke mass, and the concentration of each pollutant in the smoke mass can be obtained by comparing the difference of the light intensity of the emission light and the light intensity of the received light according to a Bernoulli equation and a combustion equation.
The current tail gas remote sensing detection device, for example, a motor vehicle or ship double-optical-path multi-lane tail gas remote sensing detection system disclosed in chinese utility model patent publication No. CN205049475U (published as 2016.02.24), comprises a control device, an infrared light generating device, an ultraviolet light generating device, a beam combining device and a signal receiving and analyzing device, wherein infrared light and ultraviolet light generated by the infrared light generating device and the ultraviolet light generating device respectively generate a beam after being combined by the beam combining device, the beam generated after being combined is emitted by the beam combining device and received by the signal receiving and analyzing device, and the beam is intercepted on a path through which the motor vehicle or ship passes; the signal receiving and analyzing device is connected with the control device. The infrared light and the ultraviolet light are combined by using the beam combining device, the light beam is split after detection, and the tail gas is detected by the infrared light and the ultraviolet light simultaneously, so that the detection accuracy is improved; moreover, the two lights are combined by the beam combining device, so that the diameter of light propagation is reduced, and the light is prevented from diverging.
However, the above-mentioned remote exhaust gas detection device and the existing remote exhaust gas detection device have the following problems: the existing remote sensing detection of tail gas is fixed, and cannot be moved at any time according to requirements, so that the remote sensing detection of tail gas is inconvenient to use, and the accuracy is also influenced to a certain extent; when the remote sensing detection of the tail gas is carried out, the alignment degree and the parallelism degree are difficult to master and are inconvenient to carry out accurate adjustment, so that the detected data are inaccurate; and (III) the transmission accuracy is not enough, and the light source integration effect is not good, so that the light path is not convenient to align.
Disclosure of Invention
The invention aims to solve the problem of the existing tail gas remote sensing detection, and provides a method for realizing light source integration by a beam combining unit through a plurality of beams of laser, which is convenient for light path alignment, realizing light source separation by the beam combining unit, detecting through different detectors and improving detection precision; through portable setting, be convenient for carry out the mobile regulation location, a vehicle exhaust remote sensing detection device of operation is convenient for through portable power source simultaneously.
For the purpose of the invention, the following technical scheme is adopted for realizing the purpose:
a remote sensing detection device for automobile exhaust comprises a measuring main machine and a measuring auxiliary machine; the measuring main machine and the measuring auxiliary machine are arranged in parallel in an aligned mode; the measuring host comprises three main adjusting rods, a host case, a green light receiving module, a transmitting end light chamber module and a red light speed measuring module; the green light receiving module is positioned at the left part of the main case and is used for receiving green light signals; the transmitting end light chamber module is positioned at the left part of the main case and is used for transmitting light source signals; the red light speed measuring module is arranged at the bottom of the main case and is used for carrying out red light speed measuring detection; the measuring auxiliary machine comprises three auxiliary adjusting rods, an auxiliary case, a green light emitting module, a reflecting end light chamber module and a speed measuring reflecting module; the green light emitting module is positioned at the left part of the auxiliary case and matched with the green light receiving module; the green light emitting module is used for emitting a green light signal; the reflection end optical chamber module is positioned at the right part of the auxiliary case; the reflection end light chamber module is matched with the emission end light chamber module and used for reflecting light source signals; the speed measurement reflection module is positioned at the rear part of the auxiliary case and used for matching with the red light speed measurement module to measure the speed.
Preferably, the number of the main adjusting rods is three, and the three main adjusting rods are respectively positioned on two sides of the front end and in the middle of the rear end of the main case; the main case is sleeved on the three main adjusting rods through three adjusting rod sleeves respectively, adjusting valves are arranged on the three main adjusting rods, and the main case is adjusted in a lifting mode on the main adjusting rods through the adjusting valves; a T-shaped supporting rod is arranged at the bottom of the auxiliary machine box; the number of the auxiliary machine boxes is three, the three auxiliary adjusting rods are respectively arranged at three outer ends of the T-shaped supporting rod, and the three auxiliary adjusting rods are respectively positioned at two sides of the front end and the middle part of the rear end of the auxiliary machine box; the auxiliary case is sleeved on the three auxiliary adjusting rods through three auxiliary adjusting rod sleeves respectively; the three auxiliary adjusting rods are provided with auxiliary adjusting valves; the auxiliary case is lifted and adjusted on the auxiliary adjusting rod sleeve through the auxiliary adjusting valve.
Preferably, the upper part of the front panel of the main case is provided with a plurality of light intensity indicators, and the middle part of the front panel of the main case is provided with a plurality of vertically arranged gas measurement windows; red light auxiliary aligners are respectively arranged at the upper and lower parts of the left side of the front panel of the main case; a plurality of green light receiving windows are arranged at the right part of the front panel of the main case; the green light receiving module comprises a green light receiving bracket and a plurality of green light receiving units; the green light receiving units are vertically and regularly arranged at the front part of the green light receiving bracket, and each green light receiving unit corresponds to each green light receiving window.
Preferably, the transmitting end optical chamber module comprises a light source transmitting component, a transmitting end optical chamber component, a closed air chamber component and a receiving detection component; the light source emission assembly comprises a light source emission support, an ultraviolet light source and an infrared light source, wherein the ultraviolet light source and the infrared light source are respectively arranged at the top and the rear part of the light source emission support, and the ultraviolet light source and the infrared light source are combined; the transmitting end light chamber component comprises a transmitting end light chamber and two transmitting total reflection mirrors; the two transmitting total reflection mirrors are symmetrically arranged in the transmitting end light chamber through two three-position adjusting blocks respectively; the closed air chamber assembly is positioned at the rear side of the bottom air measurement window and is used for measuring through pumping and exhausting standard air; the receiving detection assembly comprises a dichroic mirror, a red light detector and a purple light detector; the dichroic mirror is located on the rear side of the closed air chamber assembly, the red light detector and the purple light detector are respectively located on two sides of the dichroic mirror, and red light and purple light are irradiated into the red light detector and the purple light detector through the dichroic mirror to be detected.
Preferably, the red light speed measuring module comprises a T-shaped hinge plate, a first hinge arm and a second hinge arm; the T-shaped hinge plate is arranged at the bottom of the main case through two hinge shafts; and the two articulated shafts penetrate through two ends of the transverse plate of the T-shaped articulated plate; first articulated arm and second articulated arm connect respectively on two articulated shafts, the outer end of first articulated arm and the outer end of second articulated arm all are provided with the ruddiness that tests the speed.
Preferably, a plurality of green light emitting windows are arranged on the left part of the front panel of the auxiliary case, and each green light emitting window corresponds to each green light receiving window; the right part of the front panel of the auxiliary case is provided with a plurality of gas matching windows; each gas fitting window is matched with each gas measuring window; auxiliary alignment reference points are arranged on the upper side and the lower side of the right part of the front panel of the auxiliary case, and the auxiliary alignment reference points correspond to the red light auxiliary aligner.
Preferably, the green light emitting module comprises a green light bracket, a green light source, a green light reflector and a plurality of green light beam splitters; the green light bracket is arranged in the auxiliary case through the case partition plate, and the green light bracket is positioned at the left part of the auxiliary case; the green light source is arranged at the lower part of the green light bracket; the green light reflector is arranged at the bottom of the case partition plate and is positioned right below the green light source; the green light beam splitters are longitudinally aligned and regularly arranged on the case partition plate, are positioned on the front side of the left part of the case partition plate, are positioned at the bottom and at the upper parts of the green light beam splitters in opposite directions and are symmetrically arranged with the green light reflector; the green light reflector is matched with the green light spectroscopes to irradiate the green light to the green light receiving module; the reflection end light chamber module comprises a plurality of reflection end total-reflection mirrors and a reflection end mirror adjusting assembly, the mirror adjusting assembly is used for driving the plurality of reflection end total-reflection mirrors to carry out angle adjustment, and the plurality of reflection end total-reflection mirrors are located on the rear side of the gas matching window.
Preferably, the speed measuring reflection module comprises a reflection fixing plate, a first test hinge rod and a second test hinge rod; the reflection fixing plate is fixedly arranged at the rear part of the T-shaped supporting rod and is positioned between the auxiliary case and the auxiliary adjusting rod; the first test hinge rod and the second test hinge rod are respectively hinged to two sides of the bottom of the reflection fixed plate, and the outer end of the first test hinge rod and the outer end of the second test hinge rod are respectively provided with a speed measurement red light reflection plate.
Preferably, the measurement host is connected with a mobile power supply through a power supply connecting wire; and handles are arranged at the tops of the measuring main machine, the measuring auxiliary machine and the mobile power supply.
A detection method of an automobile exhaust remote sensing detection device sequentially comprises the following steps:
powering on a power supply: the device is characterized in that a measurement host and a measurement auxiliary machine are arranged on two sides of a detection lane in parallel in an aligned mode, and the measurement host and the measurement auxiliary machine are respectively connected with two mobile power supplies for supplying power; after the measurement host is electrified, if the three light intensity indicators on the front panel of the measurement host are in a digital form, and after the measurement auxiliary machine is electrified, green light is emitted from the green light emission window;
(II) gas light path alignment: the heights of the main case and the auxiliary case are respectively adjusted through adjusting valves and auxiliary adjusting valves on the measuring main machine and the measuring auxiliary machine, so that the main case and the auxiliary case are oppositely arranged and kept on a straight line, and integral pre-alignment is realized; the two red light auxiliary aligners on the main case respectively irradiate onto auxiliary alignment reference points of the auxiliary case to realize auxiliary light path alignment; the auxiliary adjusting rod on one side of the auxiliary alignment reference point of the auxiliary machine box is used as a rotating center to rotate, so that ten paths of green light are emitted into a green light receiving window with corresponding height on the measuring main machine, and green light path alignment is realized; the display values of the three light intensity indicators are adjusted to reach the alignment index by adjusting the heights of the main case and the auxiliary case;
(III) aligning a speed measuring light path: the first hinge arm and the second hinge arm on the measuring main machine are completely opened outwards to be placed horizontally, and the first testing hinge rod and the second testing hinge rod on the measuring auxiliary machine are completely opened outwards to be placed horizontally; aligning speed measuring red light on the first articulated arm and the second articulated arm with speed measuring red light reflecting plates on the first testing articulated rod and the second testing articulated rod, and aligning the light spots in the centers of the speed measuring red light reflecting plates as much as possible;
(IV) tail gas detection: after all points on the device are aligned, the remote sensing detection of the tail gas can be carried out.
According to the technical scheme, the device measures CO/CO2, NO/HC and smoke intensity/light absorption coefficients in the tail gas through infrared rays, ultraviolet rays and green light respectively, and is integrated through multiple beams of light in the measuring process, so that the light path alignment precision is improved; through with light beam separation, promote and survey the precision, detect through removing transport and lift adjustment at any time simultaneously, promote detection efficiency.
In summary, the technical effects of the present invention are that light source integration is realized, light path alignment is facilitated, the light source is separated by the beam splitting unit, and detection accuracy is improved; the movable positioning device is convenient to move, adjust and position and is convenient to operate.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the arrangement of the measurement main unit and the measurement auxiliary unit.
Fig. 3 is a schematic structural diagram of the measurement host.
Fig. 4 is a schematic structural diagram of the measurement auxiliary machine.
Detailed Description
As shown in fig. 1 to 3, the remote sensing device for detecting the automobile exhaust comprises a main measuring machine 1 and an auxiliary measuring machine 2; the measuring main machine 1 and the measuring auxiliary machine 2 are arranged in parallel alignment, so that better signal transmitting and receiving are facilitated. The measurement host 1 comprises three main adjusting rods 11, a host case 12, a green light receiving module 13, an emitting end light chamber module 14 and a red light speed measuring module 15; the three main adjusting rods 11 are respectively positioned at the two sides of the front end and the middle part of the rear end of the main case 12; the mainframe box 12 is respectively sleeved on the three main adjusting rods 11 through three adjusting rod sleeves 121, the three adjusting rods 11 are respectively provided with an adjusting valve 111, and the mainframe box 12 is subjected to lifting adjustment on the main adjusting rods 11 through the adjusting valves 111, so that the height of the mainframe box is conveniently controlled, and the mainframe box is better aligned with the measuring auxiliary machine 2. The green light receiving module 13 is located at the left portion of the main cabinet 12, and the green light receiving module 13 is used for receiving a green light signal. The transmitting end light chamber module 14 is located at the left part of the main chassis 12, and the transmitting end light chamber module 14 is used for transmitting light source signals. The red light speed measuring module 15 is arranged at the bottom of the main case 12, and the red light speed measuring module 15 is used for red light speed measuring detection. The measuring main machine 1 and the measuring auxiliary machine 2 are respectively connected with two mobile power supplies 3 through two power supply connecting wires, so that the position can be moved at any time, better adjustment is facilitated, and the use is convenient. The top of the measurement host 1, the top of the measurement auxiliary machine 2 and the top of the mobile power supply 3 are all provided with handles 4, and manual carrying and convenient transfer are facilitated through the handles 4.
As shown in fig. 3, three light intensity indicators 122 are disposed on the upper portion of the front panel of the main chassis 12, and the three light intensity indicators 122 respectively display the indication values of ultraviolet, infrared and green light, in general, the ultraviolet indication value "60 ~ 90", the green indication value "60 ~ 90", and the infrared indication value "60 ~ 90", the light intensity is not adjusted to saturation, the value is below 97, the data is larger, the better, if the data is larger, the best, the three light intensity values are above 30, the device can be used normally, thereby achieving accurate alignment, and further improving the accuracy of detection.
The green light receiving module 13 is used for measuring smoke intensity/light absorption coefficient, and the green light receiving module 13 comprises a green light receiving bracket 131 and ten green light receiving units 132; ten green light receiving units 132 are vertically and regularly arranged in front of the green light receiving bracket 131, and correspond to each green light receiving window 125 through each green light receiving unit 132, thereby achieving better receiving and alignment.
The transmitting end optical chamber module 14 comprises a light source transmitting assembly 141, a transmitting end optical chamber assembly 142, a closed air chamber assembly 143 and a receiving detection assembly 144; the light source emission assembly 141 comprises a light source emission bracket 1410, an ultraviolet light source 1411 and an infrared light source 1412, and NO/HC is measured by the ultraviolet differential absorption spectroscopy technology through the ultraviolet light source 1411; the CO/CO2 is measured by the infrared light source 1412 through a tunable semiconductor laser absorption spectrum technology, the ultraviolet light source 1411 and the infrared light source 1412 are respectively arranged at the top and the rear of the light source emission support 1410, and the ultraviolet light source 1411 and the infrared light source 1412 are combined to realize light beam integration after combination, so that the alignment of the light sources is further facilitated. The emission end light chamber assembly 142 includes an emission end light chamber 1421 and two emission total reflectors 1422; the two emission total-reflection mirrors 1422 are symmetrically arranged in the emission end light chamber 1421 through two three-position adjusting blocks 1423 respectively, and the angle of the emission total-reflection mirror 1422 is adjusted through the three-position adjusting block 1423; the closed gas chamber assembly 143 is positioned at the rear side of the bottom gas measurement window 123, and the closed gas chamber assembly 143 performs measurement by pumping and exhausting standard gas; the reception detection assembly 144 includes a dichroic mirror 1441, a red light detector 1442, and a violet light detector 1443; a dichroic mirror 1441 is located at the rear side of the closed air chamber component 143, a red light detector 1442 and a purple light detector 1443 are respectively located at two sides of the dichroic mirror 1441, and the red light and the purple light are respectively irradiated into the red light detector 1442 and the purple light detector 1443 through the dichroic mirror 1441 for detection.
The red light speed measuring module 15 comprises a T-shaped hinge plate 151, a first hinge arm 152 and a second hinge arm 153; the T-shaped hinge plate 151 is provided at the bottom of the main cabinet 12 through two hinge shafts 154; and the two hinge shafts 154 penetrate both ends of the transverse plate of the T-shaped hinge plate 151; the first hinge arm 152 and the second hinge arm 153 are respectively connected to the two hinge shafts 154, and when they are aligned, the first hinge arm 152 and the second hinge arm 153 are simply opened outward to perform red light alignment. The outer end of the first hinge arm 152 and the outer end of the second hinge arm 153 are both provided with a speed measuring red light 155, and further speed measuring light path alignment is realized through the speed measuring red light 155, so that tail gas detection is performed.
As shown in fig. 1 and 4, the measurement auxiliary machine 2 includes three auxiliary adjusting rods 20, an auxiliary case 21, a green light emitting module 22, a reflective end light chamber module 23, and a speed measuring reflection module 24; the bottom of the auxiliary case 21 is provided with a T-shaped support rod 200; the three auxiliary adjusting levers 20 are respectively disposed at three outer ends of the T-shaped supporting bar 200, and the three auxiliary adjusting levers 20 are conveniently supported by the T-shaped supporting bar 200, thereby further improving stability. The three auxiliary adjusting rods 20 are respectively positioned on two sides of the front end and the middle of the rear end of the auxiliary case 21, so that the supporting performance is further improved. The auxiliary chassis 21 is respectively sleeved on the three auxiliary adjusting rods 20 through three auxiliary adjusting rod sleeves 201; the three auxiliary adjusting rods 20 are all provided with auxiliary adjusting valves 202; the auxiliary case 21 is subjected to lifting adjustment on an auxiliary adjusting rod sleeve 201 through an auxiliary adjusting valve 202; the green light emitting module 22 is positioned at the left part of the sub-chassis 21, and the green light emitting module 22 is matched with the green light receiving module 13; the green light emitting module 22 is used for emitting green light signals; the reflection end optical chamber module 23 is positioned at the right part of the auxiliary case 21; the reflection end optical chamber module 23 is matched with the emission end optical chamber module 14, and the reflection end optical chamber module 23 is used for reflecting a light source signal; the speed measuring reflection module 24 is located at the rear part of the sub-chassis 21, and the speed measuring reflection module 24 is used for matching with the red light speed measuring module 15 to measure the speed.
Ten green light emission windows 211 are provided at the left portion of the front panel of the sub-chassis 21, and each green light emission window 211 corresponds to each green light reception window 125; ten air matching windows 212 are arranged at the right part of the front panel of the auxiliary case 21; each gas fitting window 212 is fitted with each gas measuring window 123; the auxiliary alignment reference points 213 are disposed on the upper and lower sides of the right portion of the front panel of the sub-chassis 21, and the auxiliary alignment reference points 213 correspond to the red light auxiliary aligner 124, so that the red light auxiliary aligner 124 facilitates more efficient optical path alignment.
The green light emitting module 22 includes a green light support 221, a green light source 222, a green light reflector 223, and a plurality of green light beam splitters 224; the green light bracket 221 is arranged in the sub-chassis 21 through the chassis partition plate 220, and the green light bracket 221 is positioned at the left part of the sub-chassis 21; the green light source 222 is disposed at the lower portion of the green holder 221; the green light reflector 223 is arranged at the bottom of the case separation plate 220 and is positioned right below the green light source 222, and green light is reflected to the green light spectroscope 224 by the green light reflector 223 and is respectively emitted by the green light emission window 211; the plurality of green beam splitters 224 are longitudinally aligned and regularly arranged on the chassis separation plate 220, are positioned on the front side of the left part of the chassis separation plate 220, are positioned on the bottom green beam splitter 224 and the upper green beam splitter 224 in opposite directions, and are symmetrically arranged with the green reflector 223, so that green light is conveniently reflected to the upper green beam splitter 224, and is irradiated to the green light receiving module 13 through the cooperation of the green reflector 223 and the plurality of green beam splitters 224. The reflection end light chamber module 23 includes a plurality of reflection end total reflection mirrors 231 and a reflection end mirror adjusting assembly 232, the mirror adjusting assembly 232 is configured to drive the plurality of reflection end total reflection mirrors 231 to perform angle adjustment, and the plurality of reflection end total reflection mirrors 231 are located at the rear side of the gas matching window 212.
The velocity measurement reflection module 24 includes a reflection fixing plate 241, a first test hinge lever 242 and a second test hinge lever 243; the reflection fixing plate 241 is fixedly arranged at the rear part of the T-shaped support rod 200 and is positioned between the auxiliary case 21 and the auxiliary adjusting rod 20; the first and second test hinge bars 242 and 243 are hinged at both sides of the bottom of the reflective fixing plate 241, respectively, and when aligned, are opened by the first and second test hinge bars 242 and 243 to be aligned with the first and second hinge arms 152 and 153, thereby performing better alignment. The outer end of the first test hinge rod 242 and the outer end of the second test hinge rod 243 are both provided with a speed measurement red light reflection plate 244, and are aligned with the speed measurement red light 155 through the speed measurement red light reflection plate 244, so that better speed measurement light path alignment is facilitated.
A detection method of an automobile exhaust remote sensing detection device sequentially comprises the following steps:
powering on a power supply: the device is characterized in that a measuring main machine 1 and a measuring auxiliary machine 2 are arranged on two sides of a detection lane in parallel in an aligned mode, and the measuring main machine 1 and the measuring auxiliary machine 2 are respectively connected with two mobile power supplies 3 for power supply; before the system is in place, appropriate safety warning cone barrels are arranged on the front side and the rear side of the equipment, so that a detection lane can be isolated and guided out, and a driver of a passing vehicle can be prompted to avoid collision; after the measurement host 1 is powered on, if the three light intensity indicators 122 on the front panel of the measurement host 1 are all in a digital form, and after the measurement auxiliary machine 2 is powered on, green light is emitted from the green light emission window 211;
(II) gas light path alignment: the heights of the main case 12 and the auxiliary case 21 are respectively adjusted through the adjusting valve 111 and the auxiliary adjusting valve 202 on the measuring main machine 1 and the measuring auxiliary machine 2, so that the main case 12 and the auxiliary case 21 are oppositely arranged and kept on a straight line, and integral pre-alignment is realized; the two red light auxiliary aligners 124 on the main chassis 12 respectively irradiate the auxiliary alignment reference points 213 of the sub-chassis 21 to realize the auxiliary light path alignment; the auxiliary adjusting rod 20 at one side of the auxiliary alignment reference point 213 of the auxiliary case 21 is rotated as a rotation center, so that ten paths of green light are emitted into the green light receiving window 125 at the corresponding height on the measuring main machine 1, and the alignment of the green light path is realized; the display values of the three light intensity indicators 122 are adjusted to reach the alignment index by adjusting the heights of the main chassis 12 and the sub chassis 21;
(III) aligning a speed measuring light path: the first hinge arm 152 and the second hinge arm 153 on the measuring main machine 1 are completely opened outwards to be horizontally placed, and the first test hinge rod 242 and the second test hinge rod 243 on the measuring auxiliary machine 2 are completely opened outwards to be horizontally placed; aligning the tacho red light 155 on the first and second hinge arms 152 and 153 with the tacho red light reflector 244 on the first and second test hinge bars 242 and 243 with as much of a spot as possible in the center of the tacho red light reflector 244;
(IV) tail gas detection: after all points on the device are aligned, the remote sensing detection of the tail gas can be carried out.
The device measures CO/CO2, NO/HC and smoke intensity/light absorption coefficient in the tail gas through infrared rays, ultraviolet rays and green light respectively, and realizes integration through multiple beams of light in the measuring process, thereby improving the light path alignment precision; through with light beam separation, promote and survey the precision, detect through removing transport and lift adjustment at any time simultaneously, promote detection efficiency. In summary, the technical effects of the present invention are that light source integration is realized, light path alignment is facilitated, the light source is separated by the beam splitting unit, and detection accuracy is improved; the movable positioning device is convenient to move, adjust and position and is convenient to operate.
Claims (10)
1. The remote sensing detection device for the automobile exhaust is characterized by comprising a measuring main machine (1) and a measuring auxiliary machine (2); the measuring main machine (1) and the measuring auxiliary machine (2) are arranged oppositely and in alignment; the measurement host (1) comprises a plurality of main adjusting rods (11), a host case (12), a green light receiving module (13), an emitting end light chamber module (14) and a red light speed measuring module (15); the main adjusting rods (11) are used for adjusting the main case (12) to lift; the green light receiving module (13) is positioned at the left part of the main case (12), and the green light receiving module (13) is used for receiving green light signals; the transmitting end light chamber module (14) is positioned at the left part of the main case (12), and the transmitting end light chamber module (14) is used for transmitting light source signals; the red light speed measuring module (15) is arranged at the bottom of the main case (12), and the red light speed measuring module (15) is used for carrying out red light speed measuring detection; the measurement auxiliary machine (2) comprises a plurality of auxiliary adjusting rods (20), an auxiliary machine box (21), a green light emitting module (22), a reflection end light chamber module (23) and a speed measurement reflection module (24); the main adjusting rods (11) are used for adjusting the lifting of the auxiliary case (21); the green light emitting module (22) is positioned at the left part of the auxiliary case (21), and the green light emitting module (22) is matched with the green light receiving module (13); the green light emitting module (22) is used for emitting a green light signal; the reflection end light chamber module (23) is positioned at the right part of the auxiliary case (21); the reflection end light chamber module (23) is matched with the emission end light chamber module (14), and the reflection end light chamber module (23) is used for reflecting a light source signal; the speed measurement reflection module (24) is positioned at the rear part of the auxiliary case (21), and the speed measurement reflection module (24) is used for matching with the red light speed measurement module (15) to measure the speed.
2. The remote sensing device for detecting the automobile exhaust gas according to claim 1, wherein the number of the main adjusting rods (11) is three, and the three main adjusting rods (11) are respectively positioned on two sides of the front end and in the middle of the rear end of the main case (12); the main case (12) is respectively sleeved on the three main adjusting rods (11) through three adjusting rod sleeves (121), adjusting valves (111) are arranged on the three main adjusting rods (11), and the main case (12) is adjusted in a lifting mode on the main adjusting rods (11) through the adjusting valves (111); the bottom of the auxiliary case (21) is provided with a T-shaped support rod (200); the number of the auxiliary cases (21) is three, the three auxiliary adjusting rods (20) are respectively arranged at three outer ends of the T-shaped supporting rod (200), and the three auxiliary adjusting rods (20) are respectively positioned at two sides of the front end and the middle of the rear end of the auxiliary case (21); the auxiliary case (21) is sleeved on the three auxiliary adjusting rods (20) through three auxiliary adjusting rod sleeves (201) respectively; the three auxiliary adjusting rods (20) are respectively provided with an auxiliary adjusting valve (202); the auxiliary case (21) is adjusted to be lifted on the auxiliary adjusting rod sleeve (201) through an auxiliary adjusting valve (202).
3. The remote sensing device for detecting the automobile exhaust gas according to claim 1, characterized in that a plurality of light intensity indicators (122) are arranged at the upper part of the front panel of the main case (12), and a plurality of vertically arranged gas measurement windows (123) are arranged at the middle part of the front panel of the main case (12); the upper part and the lower part of the left side of the front panel of the main case (12) are respectively provided with a red light auxiliary aligner (124); a plurality of green light receiving windows (125) are arranged at the right part of the front panel of the main case (12); the green light receiving module (13) comprises a green light receiving bracket (131) and a plurality of green light receiving units (132); the plurality of green light receiving units (132) are vertically and regularly arranged at the front part of the green light receiving bracket (131), and each green light receiving unit (132) corresponds to each green light receiving window (125).
4. The remote sensing device for detecting the automobile exhaust according to claim 3, wherein the emission end optical chamber module (14) comprises a light source emission component (141), an emission end optical chamber component (142), a closed air chamber component (143) and a receiving detection component (144); the light source emitting assembly (141) comprises a light source emitting support (1410), an ultraviolet light source (1411) and an infrared light source (1412), wherein the ultraviolet light source (1411) and the infrared light source (1412) are respectively arranged at the top and the rear of the light source emitting support (1410), and the ultraviolet light source (1411) and the infrared light source (1412) are combined; the emission end light chamber component (142) comprises an emission end light chamber (1421) and two emission total reflection mirrors (1422); the two emission total reflection mirrors (1422) are symmetrically arranged in the emission end light chamber (1421) through two three-position adjusting blocks (1423) respectively; the closed air chamber assembly (143) is positioned at the rear side of the bottom gas measurement window (123), and the closed air chamber assembly (143) performs measurement by pumping standard gas; the receiving detection assembly (144) comprises a dichroic mirror (1441), a red light detector (1442) and a purple light detector (1443); the dichroic mirror (1441) is located on the rear side of the closed air chamber assembly (143), the red light detector (1442) and the purple light detector (1443) are located on two sides of the dichroic mirror (1441) respectively, and the dichroic mirror (1441) is used for irradiating red light and purple light into the red light detector (1442) and the purple light detector (1443) respectively for detection.
5. The remote sensing device for detecting the automobile exhaust gas as claimed in claim 1, wherein the red light speed measuring module (15) comprises a T-shaped hinge plate (151), a first hinge arm (152) and a second hinge arm (153); the T-shaped hinge plate (151) is arranged at the bottom of the main case (12) through two hinge shafts (154); two hinge shafts (154) penetrate through two ends of a transverse plate of the T-shaped hinge plate (151); the first hinge arm (152) and the second hinge arm (153) are respectively connected to the two hinge shafts (154), and the outer end of the first hinge arm (152) and the outer end of the second hinge arm (153) are respectively provided with a speed-measuring red light (155).
6. The remote sensing device for detecting vehicle exhaust gas according to claim 3, wherein a plurality of green light emitting windows (211) are provided at a left portion of a front panel of the sub-housing (21), and each green light emitting window (211) corresponds to each green light receiving window (125); a plurality of gas matching windows (212) are arranged at the right part of the front panel of the auxiliary case (21); each gas fitting window (212) is matched with each gas measuring window (123); auxiliary alignment reference points (213) are arranged on the upper side and the lower side of the right part of the front panel of the auxiliary case (21), and the auxiliary alignment reference points (213) correspond to the red auxiliary aligner (124).
7. The remote sensing device for detecting the automobile exhaust gas as claimed in claim 1, wherein the green light emitting module (22) comprises a green light bracket (221), a green light source (222), a green light reflector (223) and a plurality of green light spectroscopes (224); the green light bracket (221) is arranged in the auxiliary case (21) through the case partition plate (220), and the green light bracket (221) is positioned at the left part of the auxiliary case (21); the green light source (222) is arranged at the lower part of the green light bracket (221); the green light reflector (223) is arranged at the bottom of the case separation plate (220) and is positioned right below the green light source (222); the green light beam splitters (224) are longitudinally aligned and regularly arranged on the case separation plate (220), are positioned on the front side of the left part of the case separation plate (220), are positioned on the bottom green light beam splitter (224), have opposite directions with the upper green light beam splitter (224), and are symmetrically arranged with the green light reflector (223); the green light is irradiated to a green light receiving module (13) through the cooperation of a green light reflecting mirror (223) and a plurality of green light beam splitters (224); the reflection end light chamber module (23) comprises a plurality of reflection end total reflection mirrors (231) and a reflection end lens adjusting assembly (232), the lens adjusting assembly (232) is used for driving the plurality of reflection end total reflection mirrors (231) to carry out angle adjustment, and the plurality of reflection end total reflection mirrors (231) are located on the rear side of the gas matching window (212).
8. The remote sensing device for detecting the vehicle exhaust gas according to claim 1, wherein the tachometer reflection module (24) comprises a reflection fixing plate (241), a first test hinge rod (242) and a second test hinge rod (243); the reflection fixing plate (241) is fixedly arranged at the rear part of the T-shaped supporting rod (200) and is positioned between the auxiliary case (21) and the auxiliary adjusting rod (20); the first test hinge rod (242) and the second test hinge rod (243) are respectively hinged to two sides of the bottom of the reflection fixing plate (241), and the outer end of the first test hinge rod (242) and the outer end of the second test hinge rod (243) are respectively provided with a speed measurement red light reflection plate (244).
9. The remote sensing device for detecting the automobile exhaust according to claim 1, characterized in that the measuring main machine (1) and the measuring auxiliary machine (2) are respectively connected with two mobile power supplies (3) through two power connection lines; the top of the measurement host (1), the top of the measurement auxiliary machine (2) and the top of the mobile power supply (3) are all provided with handles (4).
10. The detection method of the automobile exhaust remote sensing detection device is characterized by sequentially comprising the following steps of:
electrifying a power supply: the device is characterized in that a measuring host (1) and a measuring auxiliary machine (2) are arranged on two sides of a detection lane in parallel in an aligned mode, and the measuring host (1) and the measuring auxiliary machine (2) are respectively connected with two mobile power supplies (3) for power supply; after the measuring host (1) is electrified, if the three light intensity indicators (122) on the front panel of the measuring host (1) are in a digital form, and after the measuring auxiliary machine (2) is electrified, green light is emitted from the green light emitting window (211);
gas light path alignment: the heights of the main case (12) and the auxiliary case (21) are respectively adjusted through an adjusting valve (111) and an auxiliary adjusting valve (202) on the measuring main machine (1) and the measuring auxiliary machine (2), so that the main case (12) and the auxiliary case (21) are oppositely arranged and kept on a straight line, and integral pre-alignment is realized; the two red light auxiliary aligners (124) on the main case (12) respectively irradiate the auxiliary alignment reference points (213) of the auxiliary case (21) to realize auxiliary light path alignment; the auxiliary adjusting rod (20) on one side of the auxiliary alignment reference point (213) of the auxiliary case (21) is used as a rotating center to rotate, so that ten paths of green light are emitted into a green light receiving window (125) with corresponding height on the measuring host (1), and green light path alignment is realized; the display values of the three light intensity indicators (122) are adjusted to reach the alignment index by adjusting the heights of the main case (12) and the auxiliary case (21);
aligning a speed measuring light path: completely opening a first hinge arm (152) and a second hinge arm (153) on the measuring main machine (1) outwards to be horizontally placed, and simultaneously completely opening a first testing hinge rod (242) and a second testing hinge rod (243) on the measuring auxiliary machine (2) outwards to be horizontally placed; aligning the speed measuring red light (155) on the first hinge arm (152) and the second hinge arm (153) with the speed measuring red light reflecting plate (244) on the first test hinge bar (242) and the second test hinge bar (243) and aligning the speed measuring red light reflecting plate (244) with the spot as centered as possible;
and (3) tail gas detection: after all points on the device are aligned, the remote sensing detection of the tail gas can be carried out.
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| US20030043378A1 (en) * | 2001-08-21 | 2003-03-06 | Didomenico John | Optical path structure for open path emissions sensing |
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| CN211235517U (en) * | 2019-10-18 | 2020-08-11 | 浙江浙大鸣泉科技有限公司 | Remote sensing detection device for motor vehicle tail gas |
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| US20030043378A1 (en) * | 2001-08-21 | 2003-03-06 | Didomenico John | Optical path structure for open path emissions sensing |
| US20030089854A1 (en) * | 2001-11-09 | 2003-05-15 | Shifflett Peter S. | Apparatus and method for remotely sensing hydrocarbons and other pollutants in vehicle emissions |
| CN206114513U (en) * | 2016-06-30 | 2017-04-19 | 天津市圣威科技发展有限公司 | Vapour firewood integration motor vehicle exhaust remote sensing monitoring system |
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