CN206804682U - A kind of standard speed measuring device - Google Patents
A kind of standard speed measuring device Download PDFInfo
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- CN206804682U CN206804682U CN201720145205.8U CN201720145205U CN206804682U CN 206804682 U CN206804682 U CN 206804682U CN 201720145205 U CN201720145205 U CN 201720145205U CN 206804682 U CN206804682 U CN 206804682U
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Abstract
The utility model provides a kind of standard speed measuring device, and device is provided with three laser range sensor components of fixed intervals distance；The target that device is arranged on test the speed region side road surface on, tested the speed perpendicular to direction of traffic；Three speed can be obtained during measurement, by comparing the diversity judgement velocity measured accuracy of three speed, reduce or remit error；The laser that laser range sensor is sent forms light curtain, it is ensured that vehicle can block light curtain by laser range sensor moment, avoid error；The utility model strong applicability, the speed realized on road for any vehicle accurately and securely obtains, while does not influence normal traffic activity.
Description
Technical field
It the utility model is related to vehicle speed measuring technical field, and in particular to a kind of standard speed measuring device.
Background technology
Road traffic system had both been restricted as dynamic open system, its safety by internal system factor, and by system
The interference of external environment condition, and it is closely related with the factor such as people, vehicle and road environment.Any factor is unreliable, no in system
It is balance, unstable, it may all lead to a conflict and contradiction, produce unsafe factor or unsafe condition；How to improve as far as possible
Traffic safety level in road is then that the most direct way by personal injury or property loss is effectively reduced during traffic activity；And
It is to provide the most effective of data to improve the horizontal research of traffic safety that vehicle speed measuring is carried out to the motor vehicle in traveling
One of means.
At present, the method to be tested the speed to vehicle is usually to be loaded on the vehicle of motion, by High Precision Raster Ruler Data Acquisition,
The movement velocity of vehicle itself is measured, but existing means are present to test environment requirement strictly, and different automobile types can not be adapted to
The defects of vehicle.
Utility model content
For in the prior art the defects of, the utility model provides a kind of standard speed measuring device, strong applicability, accurate and can
That leans on realizes the speed acquisition for any vehicle on road, while does not influence normal traffic activity.
In order to solve the above technical problems, the utility model provides following technical scheme：
The utility model provides a kind of standard speed measuring device,
Described device includes three laser ranging components；Spacing distance between three laser ranging components is default
Fixed value；The target that the laser ranging component is arranged on test the speed region side road surface on, for driving into target speed trial ground
The vehicle in domain carries out ranging；And at the time of triggering three laser range sensors successively according to vehicle, to calculate the three of vehicle
Speed.
Further, the laser velocimeter component includes three laser sensors and processor；
Three laser sensors are placed equidistant testing the speed in the target road surface of region side along vehicle heading
On, Laser emission direction is vertical with direction of traffic, and each laser sensor sends fan laser light curtain；
The processor communicates to connect with each laser sensor.
Further, the angle that sends for the fan laser light curtain that each laser sensor is sent is 5 °, measurement distance 3
To 20m.
Further, the laser velocimeter component fixed placement is in the main case that tests the speed；
The main case that tests the speed is towards being equidistantly provided with three bar holes, three laser sensings in the one side of car lane
Device is separately positioned on the position for each bar hole in main case that tests the speed, and the laser beam of the laser sensor is through the bar
Launch on the carriageway surfacing in testing the speed region to the target in shape hole.
Further, the front of the main case that tests the speed is that the transmitting of three laser sensors receives window, and the survey
The bottom of cabinet of fast main case is provided with four adjustable frames, according to main frame both sides level meter adjusting base to ensure that main frame is put down with road surface
OK, Laser emission direction is vertical with direction of traffic.
Further, the processor is connected to remote shooting control terminal.
Further, the laser sensor is the high frequency lasers sensor that pulse recurrence rate is 25000Hz.
Further, the laser sensor can finally obtain three speed of institute's measuring car, by contrasting three speed
Diversity judgement vehicle whether at the uniform velocity, ensure the accuracy of final gained speed.
As shown from the above technical solution, a kind of standard speed measuring device described in the utility model, strong applicability accurately and can
That leans on realizes the acquisition of testing the speed for the vehicle on any road, while does not influence normal traffic activity.
1st, the technical solution of the utility model, non-contact speed measurement is carried out using laser, realizes mobile design, directly put
It is placed on the tachometric survey that trackside can be realized as high-precision public vehicles.
2nd, the technical solution of the utility model, installation is simple, and the influence public vehicles brought so as to avoid road closure pass through
The problem of, problem caused by metering sport car is carried out back and forth.Reduce the workload of measurement verification personnel.
3rd, the technical solution of the utility model, the use of laser measuring technique, effectively reduces measurement error, avoids car
The appearance of measurement error caused by the moment difference that tests the speed of acceleration and deceleration and tested equipment.
4th, the technical solution of the utility model, solving gauge check needs to close a road to traffic, and back and forth sport car the problem of；While with
Measurement vehicle contrasts to obtain rate accuracy within 1%, meets gauge check demand.
5th, the technical solution of the utility model, all kinds of automobile velocimeters can be carried out in the case where not influenceing traffic
Assay calibration is tested.Due to other speed measuring devices and rate accuracy not up to of the present utility model, therefore this practicality is new at this stage
Type is capable of the real-time all kinds of public vehicles speed of higher precision, and the convenient evidence obtaining of real-time grasp shoot picture superposition of data.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are these
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is a kind of standard speed measuring device schematic diagram of the present utility model；
Fig. 2 is the composition schematic diagram of laser velocimeter component 1 of the present utility model；
Fig. 3 is the angle schematic diagram for the laser light curtain that laser sensor 11 of the present utility model is launched；
Fig. 4 is main case 5 schematic diagram of the present utility model that tests the speed.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, clear, complete description is carried out to the technical scheme in the embodiment of the utility model, it is clear that retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
The method that the existing various vehicles in road traffic are tested the speed be using Kistler velocity sensor, will
Kistler velocity sensor is loaded on the vehicle of motion, by High Precision Raster Ruler Data Acquisition, measures the movement velocity of vehicle itself,
Rate accuracy reaches within 1%.It is generally used for the measurement verification relevant with speed, such as calibrating radar bayonet socket speed measuring device, just
It is in measurement vehicle, Kistler velocity sensor is installed, then measurement vehicle is tested the speed dress by radar bayonet socket at various speeds
The region of testing the speed put, by comparing speed between the two, whether qualified obtain tested equipment, if pass through calibrating.
But the installation of Kistler velocity sensor is complicated, test environment requirement is strict, it is desirable to which road surface can not have quick sand, flowing water
Deng.And need to be closed a road to traffic when detecting, avoid public vehicles from disturbing, influence road normal traffic and pass through.And Kistler speed
Real-time speed is shown in degree sensor, and measurement vehicle inevitably has acceleration and deceleration, differs with tested equipment velocity measured
Surely it is synchronization speed, measurement error is present.
Meanwhile the equipment complexity of another reflective laser light curtain speed measuring device and installation and application trouble, two beam laser
The distance between light curtain is smaller, and light curtain dispersion angle is too big, can not adapt to testing the speed for all kinds of different automobile types vehicles on road.
The utility model embodiment one provides a kind of standard speed measuring device, referring to Fig. 1, is specifically included in the device as follows
Part：
Laser velocimeter component 1, wherein, laser velocimeter component 1 is used to carry out laser velocimeter to vehicle in traveling 2, wherein, swash
The target that light velocity package 1 is arranged on test the speed region 3 side road surface on, the distance objective of laser velocimeter component 1 test the speed region 3 away from
From about at 3 meters or so, from road surface height in 15cm or so；Wherein target region 3 of testing the speed is preset in unilateral car lane,
In the present embodiment, target test the speed region 3 be the predetermined region of testing the speed of radar bayonet socket speed measuring device, meanwhile, Laser Measuring
The laser velocimeter scope coverage goal of fast component tests the speed region 3 so that laser velocimeter component 1 measures with radar bayonet socket speed measuring device
Vehicle speed place and the time can be consistent.
It was found from foregoing description, the standard speed measuring device of the utility model embodiment offer, effectively realize mobile and set
Meter, is directly placed in the tachometric survey that trackside can be realized as high-precision public vehicles；Avoid the influence society that road closure is brought
The problem of vehicle pass-through, reduce the workload of measurement verification personnel.
Further, a kind of internal structure group of above-mentioned laser velocimeter component 1 is provided in the utility model embodiment two
Close.Referring to Fig. 2, above-mentioned laser velocimeter component 1 specifically includes three laser range sensors 11 and processor 12；
Three laser range sensors 11 are placed equidistant testing the speed in target the road surface of the side of region 3 along vehicle heading
On, and each laser sensor 11 sends fan laser light curtain；Vehicle passes sequentially through what three laser distance sensors were launched
During laser light curtain, three laser distance sensors can respectively obtain three triggering at the time of and distance, three triggering moments are two-by-two
Between can calculate acquisition have altogether three car speeds, as carrying out contrast judgement to speed obtained by adjacent two laser range sensor
Whether vehicle at the uniform velocity travels, so that it is guaranteed that the accuracy and confidence level of speed obtained by two laser range sensors of head and the tail；Three are swashed
Ligh-ranging sensor independent triggers, are handled in real time in mainboard, obtain multiple speed and filtering is mutually authenticated, filter out all kinds of mistakes
Triggering, so as to obtain high-precision velocity measurement.
Wherein, for the angle of the direct of travel of vehicle 2, laser distance sensor is arranged to vehicle and tested the speed into target
Target of first, second between first and the 3rd triggered during region 3 and vehicle leaving test the speed region 3 when trigger
The 3rd；If laser range sensor is arranged to 2, due to its be by calculate range difference obtain speed measurement it is special
Property, then it can not ensure the accuracy measured；If laser range sensor is arranged to 4 or more, the effect realized with 3
The effect that can be realized does not have essential distinction, but adds equipment purchase and maintenance cost, causes unnecessary waste, because
This, the setting of 3 laser range sensors 11 is that by the optimal selection of the technique effect of the present embodiment.
Wherein, laser range sensor is the high frequency lasers distance measuring sensor that pulse recurrence rate is 25000Hz, it is ensured that can be
Obtained in 40 μ s apart from cataclysm, reduce the influence that time error is brought to measurement, entered based on the distance measured by distance measuring sensor
Scanning frequency degree amendment, it can effectively reduce measurement error caused by laser diverging.
Processor 12 communicates to connect with each laser sensor 11；Wherein, processor 12 can be single processing equipment, or
It with foregoing remote shooting control terminal is an identical terminal computer to be；If processor 12 is an individually processing
Mainboard, it can be with each laser sensor direct wired connection and being arranged in same carrier, can also be with each laser sensing
Device long distance wireless connects；Processor 12 uses STM32F4 family chips, and dominant frequency reaches 168MHz, can carry out real time data processing,
Ensure to test the speed the accuracy of clock.
It can be seen that in the present embodiment, using three laser range sensors 11, can be completed when vehicle passes through, Laser Measuring
Distance change is detected away from sensor and obtains the process of cataclysm time instant, and judges the velocity variations situation of vehicle.From car
2, which enter vehicle, leaves, and three laser sensors can detect 6 times apart from cataclysm successively, by analysis, obtain the time
Difference, distance between any two beams laser is just had determined at the time of installation, be mutually authenticated to compare and be modified, can obtained
High precision velocity measurement result.
Further, a kind of specific implementation side of above-mentioned laser sensor 11 is provided in the utility model embodiment three
Formula.Referring to Fig. 3, the laser light curtain setting of above-mentioned laser sensor 11 is as follows：
The angle for the fan laser light curtain that each laser sensor 11 is sent is 5 °, obtains low-angle light curtain.
It can be seen that in the present embodiment, low-angle light curtain design, it can be ensured that laser sensor 11 passes through laser sensing in vehicle
Device moment can block light curtain, obtain distance change, avoid and beat in error caused by vehicle different parts；Simultaneously also can be true
Protect in 5 tracks and the vehicle of various vehicles is tested the speed, while ensure the 11 equal energy of laser sensor under all kinds of road conditions
Enough normal works.
Further, the outer carrier of above-mentioned laser velocimeter component 1 is provided in the utility model embodiment four.Referring to figure
4, the above-mentioned fixed placement of laser velocimeter component 1 is as follows in the main case 5 that tests the speed：
Main case 5 test the speed towards being equidistantly provided with three bar holes 51, three laser sensors 11 in the one side of car lane
It is separately positioned on the position for each bar hole 51 in main case that tests the speed, and the laser light curtain of laser sensor 11 is sent out through bar hole
It is incident upon on the carriageway surfacing that target tests the speed in region.
Wherein, the test the speed both ends of cabinet top of main case 5 are fixed with handle 52, and be provided with can for the bottom of cabinet for the main case 5 that tests the speed
Adjusting base 53.
It can be seen that in the present embodiment, the portable of speed measuring device is realized by the main case that tests the speed and designed, can be by tachymeter
Main frame is placed in the region tested the speed of bayonet socket triggering, it is ensured that survey be same position speed, will not because of vehicle acceleration and deceleration band
Carry out measurement error.
For method more of the present utility model is described in detail, the utility model provides one kind and applies this dress
The process that tests the speed put is as follows：
S1. the laser light curtain of laser sensor 11 detects that vehicle enters；
S2. the main frame of laser sensor 11 enters the state that tests the speed；
S3. judge whether post laser triggers according to rational sequence；
If so, at the time of then extracting each laser triggering and distance, into S4；
If it is not, then extract trigger sequence and triggering at the time of and distance, into S5；
S4. data processing filtering is carried out, and calculates car speed, into S6；
S5. judge whether to cause the irrational problem of trigger sequence because vehicle mutually blocks, if so, then extraction away from
Each item data passed through from the vehicle in nearest track, return to S4；
If it is not, being then judged as erroneous trigger, filter out, into S7；
S6. vehicle-related information is extracted, after car speed and measurement distance (track number can be scaled), output, into S7；
S7. terminate to measure.
It can be seen from foregoing description, speed-measuring method of the present utility model, which solves gauge check, to be needed to close a road to traffic, and carrys out fallback
The problem of car.Contrast to obtain rate accuracy within 1% with measurement vehicle, meet gauge check demand.Traffic can not influenceed
In the case of, assay calibration experiment is carried out to all kinds of automobile velocimeters.All kinds of public vehicles speed high-precision can be measured in real time
Degree, and the convenient evidence obtaining of real-time grasp shoot picture superposition of data.
Above example is merely to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to foregoing reality
Example is applied the utility model is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modifications or substitutions, the essence of appropriate technical solution is not set to depart from the spirit and model of various embodiments of the utility model technical scheme
Enclose.
Claims (8)
1. a kind of standard speed measuring device, it is characterised in that described device includes three laser ranging components；Three Laser Measurings
It is default fixed value away from the spacing distance between component；The target that the laser ranging component is arranged on tests the speed the dypass in region
On face, for drive into target test the speed region vehicle carry out ranging；And trigger three laser ranging sensings successively according to vehicle
At the time of device, to calculate the three of vehicle speed.
2. device according to claim 1, it is characterised in that the laser velocimeter component includes three laser rangings and sensed
Device and processor；
Three laser range sensors are placed equidistant testing the speed in the target road surface of region side along vehicle heading
On, and each laser range sensor sends low-angle fan laser light curtain；
The processor communicates to connect with each laser range sensor.
3. device according to claim 2, it is characterised in that the fan laser light that each laser range sensor is sent
The fan-shaped angle that sends of curtain is 5 °, and laser light curtain is vertical with road plane, and measurement distance arrives 20m for 3.
4. device according to claim 2, it is characterised in that the laser velocimeter component fixed placement is in the main case that tests the speed
In；
The main case that tests the speed is provided with three bar holes, three laser ranging sensings towards equidistant in the one side of car lane
Device is separately positioned on the position for each bar hole in main case that tests the speed, and the laser beam of the laser range sensor is through institute
State on the carriageway surfacing that bar hole is launched in testing the speed region to the target.
5. device according to claim 4, it is characterised in that the front of the main case that tests the speed is that three laser rangings pass
The transmitting of sensor receives window, and the bottom of the main case that tests the speed is provided with four adjustable frames, horizontal according to main frame both sides
Instrument adjusts the adjustable frames to ensure that main frame is parallel with road surface, and Laser emission direction is vertical with direction of traffic.
6. device according to claim 2, it is characterised in that the processor is connected to remote shooting control terminal.
7. device according to claim 2, it is characterised in that the laser range sensor is that pulse recurrence rate is
25000Hz high frequency lasers distance measuring sensor.
8. device according to claim 2, it is characterised in that the laser range sensor can finally obtain institute's measuring car
Three speed, whether at the uniform velocity the diversity judgement vehicle by contrasting three speed, ensure the accuracy of final gained speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720145205.8U CN206804682U (en) | 2017-02-17 | 2017-02-17 | A kind of standard speed measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720145205.8U CN206804682U (en) | 2017-02-17 | 2017-02-17 | A kind of standard speed measuring device |
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| CN206804682U true CN206804682U (en) | 2017-12-26 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490206A (en) * | 2018-04-04 | 2018-09-04 | 中冶长天国际工程有限责任公司 | A kind of pallet velocity-measuring system |
| CN109910954A (en) * | 2019-02-02 | 2019-06-21 | 卡斯柯信号有限公司 | Speed-position detection and section occupied detection system for superexpress train control system |
| CN110208569A (en) * | 2019-06-10 | 2019-09-06 | 南京苏路通信息系统技术有限公司 | A kind of motor vehicle speed vehicle detection method based on the double-deck a wordline laser light curtain |
| CN110988384A (en) * | 2019-11-25 | 2020-04-10 | 中检西部检测有限公司 | Wireless transmission type motor vehicle speed measuring system and method utilizing pressing belt |
| CN112485462A (en) * | 2020-11-19 | 2021-03-12 | 易思维（杭州）科技有限公司 | Train speed measuring system |
-
2017
- 2017-02-17 CN CN201720145205.8U patent/CN206804682U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490206A (en) * | 2018-04-04 | 2018-09-04 | 中冶长天国际工程有限责任公司 | A kind of pallet velocity-measuring system |
| CN109910954A (en) * | 2019-02-02 | 2019-06-21 | 卡斯柯信号有限公司 | Speed-position detection and section occupied detection system for superexpress train control system |
| CN109910954B (en) * | 2019-02-02 | 2021-08-03 | 卡斯柯信号有限公司 | Speed measurement positioning and interval occupation detection system for ultra-high speed train control system |
| CN110208569A (en) * | 2019-06-10 | 2019-09-06 | 南京苏路通信息系统技术有限公司 | A kind of motor vehicle speed vehicle detection method based on the double-deck a wordline laser light curtain |
| CN110988384A (en) * | 2019-11-25 | 2020-04-10 | 中检西部检测有限公司 | Wireless transmission type motor vehicle speed measuring system and method utilizing pressing belt |
| CN112485462A (en) * | 2020-11-19 | 2021-03-12 | 易思维（杭州）科技有限公司 | Train speed measuring system |
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