CN206848165U - A kind of vehicle air visibility judgment means - Google Patents
A kind of vehicle air visibility judgment means Download PDFInfo
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- CN206848165U CN206848165U CN201720393534.4U CN201720393534U CN206848165U CN 206848165 U CN206848165 U CN 206848165U CN 201720393534 U CN201720393534 U CN 201720393534U CN 206848165 U CN206848165 U CN 206848165U
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Abstract
The utility model discloses a kind of vehicle air visibility judgment means, there are machinery and light connects in one end of first optical fiber group with light source group, one end of the other end of first optical fiber group and the second optical fiber group is placed in relative position, the other end of second optical fiber group is connected to measuring light power unit group, one end of first optical fiber group and one end of the second optical fiber group can be moved to carry out more accurate measurement, light source group and measuring light power unit group electrically connect with control and data processing module, control and data processing module and photoelectricity acoustic alarm or car light, speed automatic regulating module has electrical connection, control and data processing module carry out data calculating and the action of each part of control, with real-time judge air visibility, and take corresponding measure automatically as the case may be, or remind driver.Compared with common air visibility meter, visibility judgment means small volume, in light weight disclosed in the utility model, and power is low, is adapted to install and use on vehicle.
Description
Technical field：
A kind of vehicle air visibility judgment means are the utility model is related to, especially mainly by light source, optical fiber, luminous power
The vehicle air visibility judgment means of measuring unit and data processing unit composition.
Background technology：
When air visibility is poor, vehicle driver is greatly affected to the observation ability of surrounding environment and road, makes
It turns into traffic accident incidence substantially increased one of the main reasons.If air visibility can be detected in real time and notifies to drive
The person of sailing, or even certain measure is taken automatically, it is possible to it is effectively reduced traffic accident caused by being limited due to observation ability.It is existing
Some visibility measurement devices, are all integrally fixed on measuring station and some sections, it is impossible to it are directly mounted in common vehicle, and car
The detection that the visibility of position can only pass through to there and then could accurate judgement.Detected if established in all sections
Stand, highway construction expense can increase a lot.
Transmission-type visibility meter best suits visibility definition, is a kind of optimal visibility measurement device.It is main at present
Transmission-type visibility meter device mainly use clastotype transmitting terminal and receiving terminal, or transmitter and receiver one again with unification
The pattern of individual reflection end, measurement process mainly pass through decay of the measuring beam by the performance number after a fixed baseline
Amount, the atmospheric extinction parameter on fixed base is measured with this, then obtain visibility value by formula.But because transmitting luminous power does not have
There is monitoring, last measurement result can be caused deviation occur.It is most easy compared to other visibility measurement equipment, transmission-type visibility meter
By optical pollution, and measurement accuracy is caused to decline.Optical glass pollution is occurred mainly on the contact surface of protective glass and air.
Current transmission-type air visibility meter, due to can not accurately determine the real-time change of transmitting luminous power, air can not be excluded
The reason for beyond visibility the caused optical power loss between transmitting terminal and receiving terminal, it is desirable to transmitting terminal and receiving terminal or
Person's transmitter and receiver and reflection end the distance between it is far.This air visibility meter is not suitable for being arranged on vehicle.
The content of the invention:
The technical problems to be solved in the utility model, which is to provide one kind, progress real-time empty gas can see on vehicle
The device judged is spent, and it can correct the judgement knot to air visibility in real time according to incident optical power and pollutional condition
Fruit.
In order to solve the above technical problems, the utility model uses the basic conception of technical scheme to be：Pass through fiber optic conduction
Change the direction of light beam, the optical fiber group that the optical fiber group alignment measuring light power unit group that light source group connects need to be only connected, and light
Source group and measuring light power unit group need not be strictly on relative positions.The fiber lengths and angle of optical fiber group can bases
The situation of specific installation site is adjusted, and larger flexibility is provided for Car design.Simultaneously because the size and matter of optical fiber
Amount can be very small, it is not necessary to the position of large capacity motor can moving fiber, avoids the requirement to large power supply, fits
Conjunction uses on vehicle.Light source group is according to the power emission light beam of setting, and its light emitting power is by the control being attached thereto and number
Calculated and set according to control program set in advance according to processing module.The light that measuring light power unit measurement is attached thereto
Fine group is conducted through the luminous power come, and is digitized later data by electrically connecting input control and data processing module.
It is non-that the one end for the optical fiber group being connected with measuring light power unit group is moved to the optical fiber group relative position that distance is connected with power supply group
When often near, because optical power loss caused by air visibility is minimized, at this moment with predetermined power excitation source group,
The reason for difference almost all between its transmission power measured and received optical power is due to non-air visibility is caused,
For example the aging of incident light light source device, the influence of surrounding environment light, fiber ageing, optical fiber connector are contaminated etc..Control and data
This group of data that processing module receives are by as measuring basis data.Have in control and data processing module merely due to incident light
Optical power change data caused by light source device aging, if the reference data newly measured with merely due to incident light light source device is old
Optical power change data difference is very big caused by change, it may be possible to which abnormal conditions occur in the visibility judgment means.At this moment, control
System and data processing module are notified that photoelectricity acoustic alarm module carries out photoelectricity acoustic alarm, and to remind driver to check, the visibility is sentenced
Disconnected device, and determine the need for being repaired.After the measurement of reference data and storage are completed, the optical fiber that is connected with light source group
Group and the optical fiber group being connected with measuring light power group are moved to position apart from each other.At this moment light source group continues to carry out benchmark
Identical power works during DATA REASONING, and measuring light power group carries out the measurement of luminous power again, and measurement result is digital
Input control and data processing module after change.Now, thicker air is have passed through due to being measured light beam, by the delustring in air
Factor is influenceed, and luminous power further reduces.Fiber cross-sections product very little is additionally, since, light source is with after measurement end distance increase, connecing
By light source luminous power be easier by particulate in air scattering influenceed, further increase measurement accuracy.Control and
Data processing module is calculated this measurement data together with reference data using respective formula, to judge air energy now
Degree of opinion.If visibility is poor, control and data processing module are notified that the adjust automatically mould such as photoelectricity acoustic alarm or car light speed
Block carries out the adjust automatically such as photoelectricity acoustic alarm or car light, speed.Multiple light sources can select the light of different wave length with relatively reliable
Visibility variation caused by ground judges different reasons simultaneously reminds driver to take appropriate measures or be adjusted automatically to vehicle.
Its principle is that scattering and absorbent properties of the different air pollution particles to light are different, for example the particle size of mist is big
In the particle size of haze, in visible light wave range, the particle size of haze is less than the wavelength of visible light wave range, and the scattering of haze is that Rayleigh dissipates
Penetrate, its scattering section is related to wavelength；And the particle size of mist is more than the wavelength of visible light wave range, its scattering is Mie scattering, is dissipated
Section is penetrated to wavelength and insensitive, only and scale parameter is that particle girth is relevant with the ratio between electromagnetic wavelength, can based on this feature
To identify mist and haze according to the optical power change to different wavelengths of light.Another benefit for setting multiple light sources is to improve air energy
The fault-tolerant ability that degree of opinion judges, if ambient light has stronger influence to the light of certain wavelength, the light of other wavelength can also be utilized
Measurement result judged.Only larger visibility variation just has noticeable influence, therefore this reality on vehicle drive
As long as larger visibility variation can be judged with the new visibility judgment means being related to.
As the further improvement to above technical scheme, opaque tablet is combined into light beam isolation structure.Its mesh
Be stop adjacent fiber receive treat that light-metering is influenceed by adjacent light source light, without stopping ambient light.So, entering
When row reference data measures, the influence of ambient light still can be included in reference data measured value.
Compared with existing visibility meter, the structural volume that technical scheme as described above provides is small, and in light weight, power is low,
It is adapted to install and use on vehicle.Light source switch and Power Control, and measurement result analyze all digitized processes, can be with
Data processing original with vehicle and control function are used cooperatively.The most device functions being related to the technical scheme
Similar product has realized volume production on existing vehicle, reduces the security risk for realizing the technical program.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of structural representation of embodiment of the present utility model
Embodiment
In Fig. 1 structural representation, one end and the light source group (1) of optical fiber group (3a) have machinery and light connects, optical fiber group
The other end of (3a) is placed in relative position with one end of optical fiber group (3b), and the other end of optical fiber group (3b) is connected to measuring light power
Unit group (2), one end of optical fiber group (3a) and one end of optical fiber group (3b) can move, light source group (1) and measuring light power list
Tuple (2) electrically connects with control and data processing module (10), control and data processing module (10) and photoelectricity acoustic alarm
Or the automatic regulating module such as car light speed (11) has electrical connection.When the device works, the multiple light sources device in light source group (1) is pressed
Wavelength and power emission light beam according to setting, it launches the wavelength of light with power by the control being attached thereto and data processing module
Calculated and set according to control program set in advance.As a kind of embodiment, light source group (1) can launch bag
Include red, green, the high-purity monochromatic light of purple.Measuring light power unit group (2) can measure the optical fiber group being attached thereto
(3b) is conducted through the luminous power come, and is digitized later data by electrically connecting input control and data processing module
(10).When the one end for the optical fiber group (3b) being connected with power measurement unit group (2) is moved to the light that distance is connected with light source group (1)
When fine group of (3a) relative position is very near, because optical power loss caused by air visibility is minimized, at this moment control
And the data that data processing module (10) receives are by as measuring basis data.The measurement of reference data need not carry out energy every time
Carried out before the measurement of degree of opinion, start to carry out the measurement of a reference data during vehicle daily for the first time.At control and data
Have in reason module (10) merely due to optical power change data caused by incident light light source device aging, if the benchmark newly measured
Data with merely due to optical power change data caused by incident light light source device aging differ very big, it may be possible to the visibility is sentenced
There are abnormal conditions in disconnected device.At this moment control and data processing module (10) can be by photoelectricity acoustic alarms or car light speed etc. certainly
Dynamic adjusting module (11) carries out photoelectricity acoustic alarm to remind driver to check the visibility judgment means, and determine the need for into
Row maintenance.After the measurement and storage of measuring basis data are completed, the optical fiber group (3a) and and luminous power that are connected with light source group (1)
The connected optical fiber group (3b) of measurement group (2) is moved to position apart from each other.At this moment light source group (1) continues to carry out base value
According to identical power work during measurement, and measuring light power group (2) carries out the measurement of luminous power again, and measurement result is digital
Control and data processing module (10) are inputted after change and is calculated using respective formula, to judge air visibility now.
If visibility is poor, control and data processing module (10) are notified that the automatic regulating module such as photoelectricity acoustic alarm or car light speed
(11) adjust automatically such as photoelectricity acoustic alarm or car light speed is carried out.Optical fiber group (3a) transportable one end passes through fibre-optical fixator
(4a) is fixed, and one end of transparent dust-proof sleeve (5a) is regularly enclosed on fibre-optical fixator (4a), and transparent dust-proof sleeve (5a) is another
One end face is higher than the end face of fibre-optical fixator (4a).Optical fiber group (3b) transportable one end is solid by fibre-optical fixator (4b)
Fixed, one end of transparent dust-proof sleeve (5b) is regularly enclosed on fibre-optical fixator (4b), transparent dust-proof sleeve (5b) another end
Face is higher than the end face of fibre-optical fixator (4b).Fibre-optical fixator (4a) and (4b) one end are respectively higher than optical fiber group (3a) and (3b)
In each optical fiber end.It is to reduce that transparent dust-proof sleeve (5a) or (5b), which are higher than fibre-optical fixator (4a) or the main purpose of (4b),
The contaminated chance of optical fiber.When carrying out reference data measurement, the proximal most position of two groups of optical fiber is transparent dust-proof sleeve (5a) and saturating
The position that bright dust-proof sleeve (5b) is in contact, at this moment ambient light remain to the optical fiber group being connected with measuring light power unit group (2)
(3b) is received.During storing cycle, two groups of optical fiber are moved to proximal most position, now transparent dust-proof sleeve (5a) and transparent dust-proof sleeve
(5b) is in contact, and can best prevent the pollutants such as dust from staiing optical fiber.During carwash, transparent dust-proof sleeve (5a) and transparent anti-
The pollutant such as dust is cleaned outside dirt sleeve (5b), will not be accumulated excessive.Fibre-optical fixator (4a) and (4b) lead to respectively
Connection unit (8a) is crossed with (8b) with gear unit (7) to be connected.Driver element (6) has with control and data processing module (10)
Electrically connect and have mechanical connection with gear unit (7), have machinery between gear unit (7) and fibre-optical fixator (4a) and (4b) even
Connect.Control and data processing module (10) can adjust fibre-optical fixator (4a) and (4b) by controlling driver element (6)
Position is to realize foregoing control logic.As a kind of embodiment, driver element (6) can be a kind of servo horse
Reach, gear unit (7) can be a kind of screw drive structure.The light beam isolation structure (9) being made up of multiple tablets, its sheet
Thing respectively between optical fiber group (3a) and optical fiber and optical fiber in (3b) and outermost optical fiber outside.Its role is to every
Influence of the light beam to non-corresponding measuring light power unit is sent from different light sources, and further protects optical fiber exposed ends to reduce
Impaired chance.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvement and deformation can also be made, these change
Enter and deform and also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of vehicle air visibility judgment means, the degree to be decayed in atmosphere by measuring light source luminous power judges air
Transparency, it is characterised in that：One end of first optical fiber group and light source group have machinery and light connects, the other end of the first optical fiber group with
One end of second optical fiber group is placed in relative position, and the other end of the second optical fiber group is connected to measuring light power unit group, the first light
One end and one end of the second optical fiber group of fibre group can move, light source group and measuring light power unit group with control and data
Reason module has electrical connection, and control and data processing module electrically connect with photoelectricity acoustic alarm or car light, speed automatic regulating module.
2. according to the vehicle air visibility judgment means described in claim 1, it is characterised in that：First optical fiber group and the second light
One end of optical fiber is individually fixed in inside the first fibre-optical fixator and the second fibre-optical fixator in fine group, the first fibre-optical fixator and
One end of second fibre-optical fixator is respectively higher than the end of each optical fiber in the first optical fiber group and the second optical fiber group.
3. according to the vehicle air visibility judgment means described in claim 2, it is characterised in that：First transparent dust-proof sleeve and
Second transparent dust-proof sleeve is respectively fixedly enclosed on one end of the first fibre-optical fixator and the second fibre-optical fixator, and first is transparent anti-
One end face of dirt sleeve and the second transparent dust-proof sleeve is respectively higher than the one of the first fibre-optical fixator and the second fibre-optical fixator
Individual end face.
4. according to the vehicle air visibility judgment means described in claim 2, it is characterised in that：First fibre-optical fixator and
Two fibre-optical fixators are connected by the first connection unit and the second connection unit with gear unit respectively.
5. according to the vehicle air visibility judgment means described in claim 2 or 4, it is characterised in that：Driver element and control
And data processing module has electrical connection and has mechanical connection with gear unit.
6. according to the vehicle air visibility judgment means described in claim 1, it is characterised in that：It is made up of multiple tablets
Light beam isolation structure, its tablet is located at respectively between the optical fiber and optical fiber in the first optical fiber group and the second optical fiber group and outermost
The outside of optical fiber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720393534.4U CN206848165U (en) | 2017-04-15 | 2017-04-15 | A kind of vehicle air visibility judgment means |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720393534.4U CN206848165U (en) | 2017-04-15 | 2017-04-15 | A kind of vehicle air visibility judgment means |
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| CN206848165U true CN206848165U (en) | 2018-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110956836A (en) * | 2018-09-26 | 2020-04-03 | 华为技术有限公司 | Vehicle running control method and device |
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2017
- 2017-04-15 CN CN201720393534.4U patent/CN206848165U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110956836A (en) * | 2018-09-26 | 2020-04-03 | 华为技术有限公司 | Vehicle running control method and device |
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