CN109856018A - Smoke intensity detection device and smoke intensity detection method - Google Patents
Smoke intensity detection device and smoke intensity detection method Download PDFInfo
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- CN109856018A CN109856018A CN201910017112.0A CN201910017112A CN109856018A CN 109856018 A CN109856018 A CN 109856018A CN 201910017112 A CN201910017112 A CN 201910017112A CN 109856018 A CN109856018 A CN 109856018A
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- 239000000779 smoke Substances 0.000 title claims abstract description 195
- 238000001514 detection method Methods 0.000 title claims abstract description 102
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims description 28
- 238000000034 method Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
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Abstract
The invention discloses a kind of smoke intensity detection devices, for detecting the smoke intensity of motor-vehicle tail-gas, comprising: measurement laser emitting module is suitable for transmitting green light, to detect the smoke intensity of motor-vehicle tail-gas；Laser ranging module is suitable for transmitting feux rouges and to measure the distance between motor vehicle, and judges whether the tailstock passes through measured zone to measured zone, and when determining the tailstock by the measured zone, triggers the measurement laser emitting module；And beam module is closed, it is suitable for the green light and red combiner being laser beam, so as to the ranging position consistency of the detection position and the feux rouges of the green light.In addition, the invention also discloses a kind of smoke intensity detection methods.Smoke intensity detection device of the invention and method can guarantee that green light is very accurate and reliable to the detection position of motor-vehicle tail-gas, to improve the accuracy detected to smoke intensity, and can also reduce the interference to traffic.
Description
Technical field
The present invention relates to the smoke intensity detection technique field of motor-vehicle tail-gas more particularly to a kind of smoke intensity detection device and smoke intensities
Detection method.
Background technique
As discharge beyond standards phenomenon of the environmental protection administration to motor-vehicle tail-gas is increasingly paid attention to, it usually needs the machine in road pavement
The tail gas of motor-car discharge carries out smoke intensity detection.
It in the prior art, is the method being always on using laser (green light) to the smoke intensity detection of motor-vehicle tail-gas, it is motor-driven when having
When vehicle passes through measurement point, smoke measurement is triggered according to the variation of light intensity, but, this method has the capture of the tailstock certain
The motor vehicles such as error, such as lorry, trailer have gap in the junction of headstock and the tailstock, to can cause light intensity in junction
Variation, cause to the catching position of tailstock inaccuracy, to cause certain smoke intensity detection error.In addition, above method institute
The method that the green light of use is always on, green light can not only cause certain interference to driver driving, moreover, the use of green (light) laser
Restricted lifetime, generally at 10,000 hours hereinafter, and detection device is normally mounted on portal frame or L shape bar, according to
The method that this green light is always on will lead to green (light) laser and be easy to damage, to generate high equipment maintenance cost.
Summary of the invention
For this purpose, existing above the present invention provides a kind of smoke intensity detection device to solve the problems, such as or at least alleviate.
According to an aspect of the invention, there is provided a kind of smoke intensity detection device, for detecting the smoke intensity of motor-vehicle tail-gas,
Include: measurement laser emitting module, is suitable for transmitting green light, to detect the smoke intensity of motor-vehicle tail-gas；Laser ranging module is suitable for
Emit feux rouges to measured zone, to measure the distance between motor vehicle, and judges whether the tailstock passes through measured zone, and
When determining the tailstock by the measured zone, the measurement laser emitting module is triggered；And beam module is closed, being suitable for will be described green
Light and red combiner are laser beam, so as to the ranging position consistency of the detection position and the feux rouges of the green light.
Optionally, in smoke intensity detection device according to the present invention, the laser ranging module be suitable for according to measure away from
Profile from determining motor vehicle, and tailstock position is determined according to the profile of motor vehicle, to judge whether the tailstock passes through the survey
Measure region.
Optionally, in smoke intensity detection device according to the present invention, further includes: reflecting module is suitable for the laser beam
Carry out diffusing reflection；Detector module, suitable for receiving the optical signal formed after the reflecting module diffusing reflection；And data processing
Module is suitable for carrying out analytical calculation to the optical signal, so that the smoke intensity of the tail gas is calculated.
Optionally, in smoke intensity detection device according to the present invention, further includes: convex lens is arranged in the detector mould
The top of block, the convex lens is suitable for focusing the hot spot after the reflecting module diffusing reflection, to form the optical signal.
Optionally, in smoke intensity detection device according to the present invention, the feux rouges is adapted to pass through the conjunction beam module；It is described
Green light is suitable for after conjunction beam module reflection and the red combiner.
Optionally, in smoke intensity detection device according to the present invention, the feux rouges is suitable for passing through the conjunction along the vertical direction
Beam module；The green light through the conjunction beam module reflect 90 ° after with the red combiner.
Optionally, in smoke intensity detection device according to the present invention, the conjunction beam module be plane mirror, the plane mirror with
The angle of horizontal direction is 45 °.
It optionally, further include calibration module in smoke intensity detection device according to the present invention, the calibration module includes:
First smoke intensity piece has the first smoke intensity value；Second smoke intensity piece has the second smoke intensity value, and second smoke intensity value and described the
One smoke intensity value is different；In align mode, the calibration module is suitable for rotating relative to the detector module, and is suitable for turning to
So that the first smoke intensity piece or the second smoke intensity piece is located at the surface of the detector module, passes through the data processing module meter
Calculate the second measured value of the first measured value for obtaining the corresponding first smoke intensity piece and the corresponding second smoke intensity piece, and by institute
It states the first measured value and first smoke intensity value comparison, compare second measured value and second smoke intensity value, to lead to
Calculation formula is crossed to calibrate the data processing module.
Optionally, in smoke intensity detection device according to the present invention, first smoke intensity value is 25%, second smoke intensity
Value is 75%.
Optionally, in smoke intensity detection device according to the present invention, in detecting state, the calibration module is suitable for rotation
To the detector module is avoided, so that the detector module receives the optical signal, and by data processing module to institute
It states optical signal and carries out analytical calculation.
Optionally, in smoke intensity detection device according to the present invention, the measurement laser emitting module is when emitting green light
Suitable for lasting scheduled duration.
According to a further aspect of the invention, a kind of smoke intensity detection method is additionally provided, comprising steps of transmitting feux rouges is extremely surveyed
Region is measured, to measure the distance between motor vehicle, and judges whether the tailstock passes through measured zone；And when determining tailstock warp
When crossing the measured zone, triggering measurement laser emitting module emits green light, will pass through the green light detection vehicular emission
Tail gas smoke intensity；Wherein, the green light is laser beam by closing beam module and red combiner, so as to the check bit of the green light
Set the ranging position consistency with the feux rouges.
Optionally, in smoke intensity detection method according to the present invention, judge whether the tailstock passes through the measured zone and include:
The profile of motor vehicle is determined according to the distance measured；And tailstock position is determined according to the profile of motor vehicle, to judge the tailstock
Whether the measured zone is passed through.
Optionally, in smoke intensity detection method according to the present invention, further includes: carry out diffusing reflection to the laser beam；It connects
Receive the optical signal that laser beam is formed after diffusing reflection；And analytical calculation is carried out to the optical signal, it is described to be calculated
The smoke intensity of tail gas.
Optionally, in smoke intensity detection method according to the present invention, after carrying out diffusing reflection to the laser beam further include: right
Hot spot after laser beam diffusing reflection focuses to form optical signal.
Optionally, in smoke intensity detection method according to the present invention, the feux rouges is adapted to pass through the conjunction beam module；It is described
Green light is suitable for after conjunction beam module reflection and the red combiner.
Optionally, also right before the transmitting feux rouges to measured zone in smoke intensity detection method according to the present invention
Smoke intensity detection device is calibrated, comprising steps of rotation calibration module, so as to the first smoke intensity piece of calibration module turn to it is described
The surface of detector module；The first measured value of corresponding first smoke intensity piece is calculated；Calibration module is rotated, so as to calibrating die
Second smoke intensity piece of block turns to the surface of the detector module；The second measurement of corresponding second smoke intensity piece is calculated
Value；And first measured value and first smoke intensity value are compared, and by second measured value and second smoke intensity
Value comparison, is calibrated with will pass through calculation formula to the data processing module of smoke intensity detection device.
According to the technique and scheme of the present invention, a kind of smoke intensity detection device and smoke intensity detection method are provided, Laser Measuring is passed through
Away from module transmitting feux rouges to measured zone, the profile of motor vehicle is determined according to the distance measured, thus according to the profile of motor vehicle
Tailstock position is determined, thus more acurrate to the capture of tailstock position.In addition, the present invention, which also passes through, closes beam module for green light and feux rouges
Conjunction beam is laser beam, makes the ranging position consistency of the detection position and feux rouges of green light, can guarantee inspection of the green light to motor-vehicle tail-gas
Location is set very accurately and reliably, to greatly improve the accuracy to smoke intensity detection.Further, the present invention only determine it is motor-driven
The tailstock of vehicle pass through measured zone when, just triggering measurement laser emitting module transmitting green light, green light after lasting scheduled duration just
Stop transmitting, it is seen then that transmitting green light is not continuous emission state in the present invention, so as to reduce as caused by green light to traffic
Interference, and can extend measurement laser emitting module service life.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
To the accomplishment of the foregoing and related purposes, certain illustrative sides are described herein in conjunction with following description and drawings
Face, these aspects indicate the various modes that can practice principles disclosed herein, and all aspects and its equivalent aspect
It is intended to fall in the range of theme claimed.Read following detailed description in conjunction with the accompanying drawings, the disclosure it is above-mentioned
And other purposes, feature and advantage will be apparent.Throughout the disclosure, identical appended drawing reference generally refers to identical
Component or element.
Fig. 1 shows the structural schematic diagram of smoke intensity detection device according to an embodiment of the invention；
Fig. 2 shows calibration module and detector module the matching in detecting state according to an embodiment of the present invention
Close structural schematic diagram；
Fig. 3 shows calibration module and detector module the matching in align mode according to an embodiment of the present invention
Close structural schematic diagram；
Fig. 4 shows the schematic diagram of smoke intensity detection method according to an embodiment of the invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
As it was noted above, in the prior art for detecting the smoke intensity detection device of motor-vehicle tail-gas, in use or
Mostly or less there is certain functional defect, therefore the invention proposes a kind of more optimized smoke intensity detection device 100 of performance, is suitable for
Detect the smoke intensity of motor-vehicle tail-gas.Fig. 1 shows the structural schematic diagram of smoke intensity detection device 100 of the invention.
According to one embodiment, as shown in Figure 1, the smoke intensity detection device 100 in the present invention includes measurement Laser emission mould
Block 110, closes beam module 130, reflecting module 140, detector module 150 and data processing module at laser ranging module 120
160。
Wherein, measurement laser emitting module 110 is suitable for transmitting green light, which is adapted to detect for the tail gas of vehicular emission
Smoke intensity.Laser ranging module 120 is suitable for transmitting feux rouges to measured zone, smoke intensity detection device 100 according to feux rouges measure with it is motor-driven
The distance between vehicle, and can determine that the profile of motor vehicle determines the tailstock according to the profile of motor vehicle in turn according to the distance measured
Position, to judge whether the tailstock passes through measured zone according to tailstock position.When smoke intensity detection device 100 determines the tailstock by surveying
When measuring region, measurement laser emitting module 110 can be just triggered, makes to measure the transmitting green light of laser emitting module 110, thus by green
Light detects the smoke intensity of motor-vehicle tail-gas.Here, every triggering one-shot measurement laser emitting module 110 measures Laser emission
Module 110 only continues scheduled duration when emitting green light, and the predetermined scheduled duration is no more than 1 second, and in other words, the present invention exists
It is not but only to detect machine in such a way that green light is always on when emitting green light and carrying out smoke intensity detection to motor-vehicle tail-gas
When the tailstock of motor-car passes through measured zone, just triggering measurement laser emitting module 110 emits a green light, and green light is persistently making a reservation for
Just stop transmitting after duration.As it can be seen that emitting green light in the present invention is not continuous emission state, caused so as to reduce by green light
The interference to traffic, and can extend measurement laser emitting module 110 service life.
It should be noted that since the present invention is to determine tailstock position according to the profile of motor vehicle, thus to tailstock position
Capture it is more acurrate, can greatly improve to smoke intensity detection accuracy.
In addition, it is laser beam that the present invention, which also passes through conjunction beam module 130 for green light and red combiner, green light can guarantee in this way
Detect the ranging position consistency of position and feux rouges.
Specifically, as shown in Figure 1, closing beam module 130 is plane mirror, and the plane mirror and the angle of horizontal direction are 45 °.
Laser ranging module 120 emits feux rouges in vertical direction, and feux rouges passes through plane mirror along the vertical direction.Measure laser emitting module
110 emit green light in the horizontal direction, and green light is incident in the horizontal direction on the reflective mirror of plane mirror, and through the anti-of plane mirror
After 90 ° of light mirror-reflection with red combiner.Here, green light is to send out before reflecting through plane mirror along the direction vertical with lane
It penetrates, so that the multiple parallel lanes for being able to achieve road pavement carry out the smoke intensity detection of motor-vehicle tail-gas.
Pass through above-mentioned setting, when detecting the tailstock of motor vehicle by measured zone by emitting feux rouges, triggering measurement
Laser emitting module 110 emits green light, and by closing beam module 130 for green light and red combiner, can guarantee green emission to survey
The position for measuring region is consistent with the position of red emission to measured zone.In other words, detection position of the green light to exhaust gas smoke
With the ranging position consistency of feux rouges, and when triggering green emission, the ranging position of feux rouges is the position that the tailstock of motor vehicle passes through
It sets, to can guarantee that green light is very accurate and reliable to the detection position of motor-vehicle tail-gas.
According to one embodiment, the present invention also passes through reflecting module 140 and carries out to the laser beam after green light and red combiner
Diffusing reflection.Reflecting module 140 is arranged on the ground.That is, continuing to be emitted to after laser beam passes through the tail gas of starting vehicle
In reflecting module 140, reflecting module 140 carries out diffusing reflection to laser beam.Further, the top of detector module 150 is equipped with
Convex lens 170, hot spot of the laser beam after the reflection of reflecting module 140 can be focused by convex lens 170, to form optical signal
It is sent to detector module 150.Detector module 150 is received to be focused through 140 diffusing reflection of reflecting module and planoconvex lens 170
After the optical signal of formation, then by data processing module 160 to optical signal progress analytical calculation, so that green light institute be calculated
The smoke intensity of the motor-vehicle tail-gas passed through is realized and is detected to the smoke intensity of motor-vehicle tail-gas.
In addition, as shown in Figure 1 to Figure 3, smoke intensity detection device 100 is additionally provided with calibration module 180, passes through calibration module 180
The measurement error of smoke intensity detection device 100 can be calibrated.Specifically, calibration module 180 includes two cigarettes with different smoke intensity values
It spends piece (sheet glass that a kind of pair of light has attenuation), respectively the first smoke intensity piece 181 and the second smoke intensity piece 182.Wherein, first
Smoke intensity piece 181 has the first smoke intensity value, and the second smoke intensity piece 182 has the second smoke intensity value, and the first smoke intensity value and the second smoke intensity value
Difference, so that the first smoke intensity value and the second smoke intensity value have determining difference.
As shown in figure 3, being visited when needing to calibrate smoke intensity detection device 100 by the way that operation calibration module 180 is opposite
It surveys device module 150 to rotate, and turns to the surface for making the first smoke intensity piece 181 be located at detector module 150, then by data
The first measured value of corresponding first smoke intensity piece 181 is calculated in reason module 160；In turn, operation calibration module 180 is opposite again visits
It surveys device module 150 to rotate, and turns to the surface for making the second smoke intensity piece 181 be located at detector module 150, then by data
The second measured value of corresponding second smoke intensity piece 182 is calculated in reason module 160.Due to the first measured value and the first smoke intensity piece 181
Correlation, the second measured value is related to the second smoke intensity piece, so that the first measured value is also different from the second measured value.
It should be pointed out that since the first smoke intensity piece 181 and the second smoke intensity piece 182 are respectively provided with determining the first smoke intensity value and
Two smoke intensity values, thus, when rotation calibration module 180, the first smoke intensity piece 181 or the second smoke intensity piece 182 is made to be located at detector module
It is with signal of the smoke intensity piece to optical attenuation for determining smoke intensity value, smoke intensity detection since detector is received when 150 surface
Equipment 100 is in calibration state.In calibration state twice, due to smoke intensity value (the first smoke intensity value and second of two smoke intensity pieces
Smoke intensity value) there is determining difference, in this way, by the way that the first measured value and the first smoke intensity value are compared, by the second measured value and the
The comparison of two smoke intensity values, then just data processing module 160 can be calibrated by corresponding calculation formula.Optionally, the first cigarette
Angle value is 25%, and second smoke intensity value is 75%.
According to a kind of embodiment, smoke intensity detection device 100 include bracket 190, above-mentioned measurement laser emitting module 110,
Laser ranging module 120 closes beam module 130, reflecting module 140, detector module 150, data processing module 160, convex lens
170 and calibration module 180 be installed on bracket 190.Wherein, calibration module 180 can be turned by runner 185 with bracket 190
It connects dynamicly, so as to the rotation of 180 opposing detector module 150 of operation calibration module.
When carrying out smoke intensity detection to motor-vehicle tail-gas by smoke intensity detection device 100, operation calibration module 180 is needed to make it
It turns to and avoids detector module 150, so that detector module 150 can be received through 140 diffusing reflection of reflecting module and planoconvex lens
170 focus the optical signal formed, and carry out analytical calculation to optical signal by data processing module 160, realize to exhaust gas smoke
Detection.
Fig. 4 shows a kind of smoke intensity detection method 400, is executed by smoke intensity detection device 100, can be right by this method 400
The smoke intensity of motor-vehicle tail-gas on road surface is detected.
According to one embodiment, method 400 starts from step S410.In step S410, sent out by laser ranging module 120
Feux rouges is penetrated to measured zone, judges whether the tailstock passes through measured zone.Specifically, smoke intensity detection device 100 is measured according to feux rouges
The distance between motor vehicle, and can determine that according to the distance measured the profile of motor vehicle, it is in turn, true according to the profile of motor vehicle
Tailstock position is determined, to judge whether the tailstock passes through measured zone according to tailstock position.
In the step s 420, when smoke intensity detection device 100 determines that the tailstock passes through measured zone, triggering measurement Laser emission
Module 110 emits green light, will pass through the smoke intensity of the tail gas of green light detection vehicular emission.Wherein, green light is by closing beam module
130 with red combiner be laser beam, thus guarantee green light detection position and feux rouges ranging position consistency.Close beam module 130
It can be plane mirror, and the plane mirror and the angle of horizontal direction are 45 °.Specifically, feux rouges passes through along the vertical direction closes Shu Mo
Block 130.Green light is incident in the horizontal direction on the reflective mirror of plane mirror, and through the reflective mirror of plane mirror reflect 90 ° after with
Red combiner.Here, green light is to emit before reflecting through plane mirror along the direction vertical with lane, is satisfied the need to be able to achieve
Multiple parallel lanes in face carry out the smoke intensity detection of motor-vehicle tail-gas.
It should be noted that since smoke intensity detection method of the invention is to determine tailstock position according to the profile according to motor vehicle
It sets, thus it is more acurrate to the capture of tailstock position, the accuracy to smoke intensity detection can be greatly improved.In addition, by closing beam module
130 by green light and red combiner, can guarantee green light to the ranging position consistency of the detection position and feux rouges of exhaust gas smoke, due to touching
When greening light emitting, the ranging position of feux rouges is the position that the tailstock of motor vehicle passes through, to can guarantee green light to motor vehicle
The detection position of tail gas is very accurate and reliable.
In turn, execute step S430, by the reflecting module 140 on ground to the laser beam after green light and red combiner into
Row diffusing reflection, and the hot spot after 140 diffusing reflection of reflecting module is focused to form optical signal by convex lens 170.Specifically, when sharp
After light beam passes through the tail gas of starting vehicle, continue to be emitted in reflecting module 140, reflecting module 140 carries out diffusing reflection to laser beam.
Hot spot of the laser beam after the reflection of reflecting module 140 can be focused by convex lens 170, to form optical signal.
Then, in step S440, detector module 150 is received through 140 diffusing reflection of reflecting module and planoconvex lens 170
The optical signal formed after focusing.
Finally, executing step S450, analytical calculation is carried out to optical signal by data processing module 160, to calculate
The smoke intensity for the motor-vehicle tail-gas that green light is passed through out is realized and is detected to the smoke intensity of motor-vehicle tail-gas.
According to one embodiment, before the smoke intensity of detection motor-vehicle tail-gas, that is, in transmitting feux rouges to measured zone
Before, also smoke intensity detection device 100 is calibrated, the specific steps are as follows: firstly, rotation calibration module 180, so as to calibrating die
First smoke intensity piece 181 of block 180 turns to the surface positioned at detector module 150；And it is calculated by data processing module 160
Obtain the first measured value of corresponding first smoke intensity piece 181.In turn, calibration module 180 is rotated, again so as to calibration module 180
Second smoke intensity piece 182 turns to the surface positioned at detector module 150；And it is calculated pair by data processing module 160
Answer the second measured value of the second smoke intensity piece 182.
In the above-mentioned state of calibration twice, since the smoke intensity value (the first smoke intensity value and the second smoke intensity value) of two smoke intensity pieces has
There is determining difference, in this way, by by the first measured value and the comparison of the first smoke intensity value, and by the second measured value and the second smoke intensity value
Comparison, so as to be calibrated by data processing module 160 of the corresponding calculation formula to smoke intensity detection device 100.
It should be noted that needing to carry out smoke intensity detection to motor-vehicle tail-gas after calibrating smoke intensity detection device 100
When, it needs operation calibration module 180 to turn to it and avoids detector module 150, so that detector module 150 can be received through reflecting
140 diffusing reflection of module and planoconvex lens 170 focus the optical signal formed, and are carried out by data processing module 160 to optical signal
Analytical calculation realizes the detection to exhaust gas smoke.
A7, the smoke intensity detection device as described in A6, wherein the conjunction beam module is plane mirror, the plane mirror and level
The angle in direction is 45 °.A9, the smoke intensity detection device as described in A8, wherein first smoke intensity value is 25%, described second
Smoke intensity value is 75%.A10, the smoke intensity detection device as described in A8 or A9, wherein in detecting state, the calibration module is suitable
The detector module is avoided in turning to, so that the detector module receives the optical signal, and passes through data processing mould
Block carries out analytical calculation to the optical signal.The described in any item smoke intensity detection devices of A11, such as A1-A10, wherein the measurement
Laser emitting module is suitable for continuing scheduled duration when emitting green light.
B15, the smoke intensity detection method as described in B14, wherein after carrying out diffusing reflection to the laser beam further include: to sharp
Hot spot after light beam diffusing reflection focuses to form optical signal.The described in any item smoke intensity detection methods of B16, such as B12-B15, wherein
The feux rouges is adapted to pass through the conjunction beam module；The green light is suitable for after conjunction beam module reflection and the red combiner.
The described in any item smoke intensity detection methods of B17, such as B12-B16, wherein also right before the transmitting feux rouges to measured zone
Smoke intensity detection device is calibrated, comprising steps of rotation calibration module, so as to the first smoke intensity piece of calibration module turn to it is described
The surface of detector module；The first measured value of corresponding first smoke intensity piece is calculated；Calibration module is rotated, so as to calibrating die
Second smoke intensity piece of block turns to the surface of the detector module；The second measurement of corresponding second smoke intensity piece is calculated
Value；And first measured value and first smoke intensity value are compared, and by second measured value and second smoke intensity
Value comparison, is calibrated with will pass through calculation formula to the data processing module of smoke intensity detection device.
In the description of this specification unless specifically defined or limited otherwise, term " connection ", " fixation " etc. should all be done extensively
Reason and good sense solution.In addition, the orientation or positional relationship of the instructions such as term " on ", "lower", "inner", "outside", "top", "bottom" is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion is signified
Equipment or unit must have specific direction, be constructed and operated in a specific orientation, it is thus impossible to be interpreted as to of the invention
Limitation.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or show
Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with
Suitable mode combines.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, knot is not been shown in detail
Structure and technology, so as not to obscure the understanding of this specification.
Claims (10)
1. a kind of smoke intensity detection device, for detecting the smoke intensity of motor-vehicle tail-gas, comprising:
Laser emitting module is measured, is suitable for transmitting green light, to detect the smoke intensity of motor-vehicle tail-gas；
Laser ranging module is suitable for transmitting feux rouges to measured zone, to measure the distance between motor vehicle, and judges the tailstock
Whether pass through measured zone, and when determining the tailstock by the measured zone, triggers the measurement laser emitting module；And
Close beam module, be suitable for the green light and red combiner being laser beam, so as to the green light detection position with it is described red
The ranging position consistency of light.
2. smoke intensity detection device as described in claim 1, wherein
The laser ranging module is suitable for determining the profile of motor vehicle according to the distance measured, and is determined according to the profile of motor vehicle
Tailstock position, to judge whether the tailstock passes through the measured zone.
3. smoke intensity detection device as claimed in claim 1 or 2, wherein further include:
Reflecting module is suitable for carrying out diffusing reflection to the laser beam；
Detector module, suitable for receiving the optical signal formed after the reflecting module diffusing reflection；And
Data processing module is suitable for carrying out analytical calculation to the optical signal, so that the smoke intensity of the tail gas is calculated.
4. smoke intensity detection device as claimed in claim 3, wherein further include:
Convex lens is arranged in the top of the detector module, after the convex lens is suitable for the reflecting module diffusing reflection
Hot spot focuses, to form the optical signal.
5. smoke intensity detection device according to any one of claims 1-4, in which:
The feux rouges is adapted to pass through the conjunction beam module；
The green light is suitable for after conjunction beam module reflection and the red combiner.
6. smoke intensity detection device as claimed in claim 5, in which:
The feux rouges is suitable for passing through the conjunction beam module along the vertical direction；
The green light through the conjunction beam module reflect 90 ° after with the red combiner.
7. smoke intensity detection device as claimed in claim 3, wherein further include calibration module, the calibration module includes:
First smoke intensity piece has the first smoke intensity value；
Second smoke intensity piece has the second smoke intensity value, and second smoke intensity value is different from first smoke intensity value；
In align mode, the calibration module is suitable for rotating relative to the detector module, and is suitable for turning to and makes described the
One smoke intensity piece or the second smoke intensity piece are located at the surface of the detector module, are calculated pair by the data processing module
The first measured value of the first smoke intensity piece and the second measured value of the corresponding second smoke intensity piece are answered, and described first is surveyed
Magnitude and first smoke intensity value comparison compare second measured value and second smoke intensity value, public will pass through calculating
Formula calibrates the data processing module.
8. a kind of smoke intensity detection method, for detecting the smoke intensity of motor-vehicle tail-gas, comprising steps of
Emit feux rouges to measured zone, to measure the distance between motor vehicle, and judges whether the tailstock passes through measured zone；
And
When determining the tailstock by the measured zone, triggering measurement laser emitting module emits green light, described green will pass through
The smoke intensity of the tail gas of light detection vehicular emission；
Wherein, the green light is laser beam by closing beam module and red combiner, so as to the green light detection position with it is described
The ranging position consistency of feux rouges.
9. smoke intensity detection method as claimed in claim 8, wherein judge whether the tailstock passes through the measured zone and include:
The profile of motor vehicle is determined according to the distance measured；And
Tailstock position is determined according to the profile of motor vehicle, to judge whether the tailstock passes through the measured zone.
10. smoke intensity detection method as claimed in claim 8 or 9, wherein further include:
Diffusing reflection is carried out to the laser beam；
Receive the optical signal that laser beam is formed after reflecting slowly；And
Analytical calculation is carried out to the optical signal, so that the smoke intensity of the tail gas is calculated.
Priority Applications (1)
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