CN206019594U - A kind of towed vehicle profile and wheelbase automatic measurement system - Google Patents
A kind of towed vehicle profile and wheelbase automatic measurement system Download PDFInfo
- Publication number
- CN206019594U CN206019594U CN201521134903.5U CN201521134903U CN206019594U CN 206019594 U CN206019594 U CN 206019594U CN 201521134903 U CN201521134903 U CN 201521134903U CN 206019594 U CN206019594 U CN 206019594U
- Authority
- CN
- China
- Prior art keywords
- trigger
- door frame
- arched door
- measuring unit
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
This utility model provides a kind of towed vehicle profile and wheelbase automatic measurement system, including：Arched door frame, sense channel；Distance measuring unit, including the range radar being respectively placed at the two column differing heights in distal end arched door frame upper end and near-end arched door frame；Vehicle commander's measuring unit and overall height measuring unit, public 1 first trigger produce a trigger to distance measuring unit in headstock and the tailstock when passing through the trigger respectively；Wheelbase measuring unit, including wheelbase trigger, the trigger produces a trigger to the range laser radar being placed on the arched door frame of distal end respectively whenever pressure wheel is out-of-date；The second survey width module that overall width measuring unit is included the wide module of the be respectively placed on two columns of near-end arched door frame first survey and is placed in vehicle both sides to be measured and mated with the wide module of the first survey, described first surveys wide module and second surveys between width module by the reflection measurement overall width of signal.
Description
Technical field
This utility model is related to a kind of e measurement technology, a kind of towed vehicle profile and wheelbase automatic measurement system when special.
Background technology
With economic fast development, China increases towed vehicle incredible amount newly every year, for preventing part towed vehicle from changing privately
Dress vehicle dimension, all must carry out outer profile size detection to towed vehicle at the vehicle management of Public Security Department of the Ministry of Public Security every year.When
The Traditional Man measuring method of front employing is less efficient, and cost of labor is higher, and is affected by the labyrinth of tested towed vehicle
With restricted by survey tool, certainty of measurement has larger error.This is with regard to an urgent demand using automated process and automaton pair
Towed vehicle outer profile size is detected, has both ensured certainty of measurement, improved measurement efficiency again.
For realizing the automatic monitoring of measuring vehicle size, also there are some method for automatic measurement for passenger-cargo carriage in recent years
And device, but have not found the automatic measurement method and apparatus to towed vehicle size.At present from existing vehicle detection
The related data of method and apparatus and Patents data find out that the currently measuring system detected by vehicle dimension is main
Including laser scanner, visual light imaging device, picking sensor array etc..
The Chinese patent of Application No. 201210119598.7 discloses a kind of vehicle dimension automatic measurement based on light curtain
System and its measuring method, the system need multiple picking sensor arrays, and complex structure, power consumption are larger, in addition once sensing
There is sensor degradation in device array, be difficult detection and later period maintenance.The Chinese patent of Application No. 201020645084.1 is announced
The vehicle dimension of a kind of utilization laser scanner and imaging device checks measurement apparatus automatically, and the device with imaging device is
Main, supplemented by laser scanner, relatively costly, complex structure, and also image is vulnerable to the impact of complex background, light and shade,
Job insecurity.The Chinese patent of Application No. 201210175516.0 discloses one kind and carries out vehicle using Laser Radar Scanning
The measuring method of size and device, the method are suffered from the drawback that：(1) wheelbase of vehicle can not be detected；(2) as radar is installed
, there is dead angle in the restriction of position in the scanning of vehicle width, surveyed vehicle width is vehicle upper surface width, is not necessarily
The Breadth Maximum of vehicle.(3) towed vehicle can not be measured；(4) the method is unable to reach the precision of the application novelty items
Require.In a word, existing vehicle dimension method for automatic measurement and installation cost are higher, and performance is not complete, and availability is not high.
Content of the invention
The purpose of this utility model is to provide a kind of automatic checkout system of towed vehicle overall size, to indoors or
Under outdoor environment, vehicle low speed after detection means can automatic measurement go out length, width, height and the wheelbase of towed vehicle,
Measurement error precision is within 1%.
A kind of towed vehicle profile and wheelbase automatic measurement system, including sense channel, near-end arched door frame, distal end arched door frame,
Distance measuring unit, vehicle commander's measuring unit, overall height measuring unit, wheelbase measuring unit, overall width measuring unit, processing unit.Institute
State arched door frame to arrange perpendicular to sense channel, sense channel passes through arched door frame；The distance measuring unit includes that three are swashed
Ligh-ranging radar, is respectively placed at the differing heights of distal end arched door frame upper end centre position and near-end arched door two columns of frame；Institute
The trigger that vehicle commander's measuring unit includes being placed in near-end arched door frame upper end middle is stated, the trigger is in headstock and parking stall through being somebody's turn to do
A trigger is produced during trigger respectively to the range laser radar being placed on the arched door frame of distal end；The overall height measuring unit with
The public same trigger of vehicle commander's measuring unit, it is near to being placed in that the trigger produces a trigger when headstock is through the trigger
Range laser radar at the differing heights of two columns of end arch door frame；The wheelbase measuring unit includes being placed on sense channel
And the wheelbase trigger near near-end arched door frame, to produce a trigger respectively remote to being placed in whenever pressure wheel is out-of-date for the trigger
Range laser radar on end arch door frame；The overall width measuring unit includes be respectively placed on two columns of near-end arched door frame
One surveys wide module and is placed in vehicle both sides to be measured and surveys the second survey width module that wide module is mated with first, and described first surveys wide mould
Block and second is surveyed between wide module by the reflection measurement overall width of signal；The processing unit be used for according to range laser radar and
Survey the data acquisition vehicle's contour parameter that wide module is obtained.
Described first surveys transmitting terminal of the wide module for correlation type photocell, and second surveys wide module connecing for correlation type photocell
Receiving end.
Described first surveys transmitting terminal of the wide module for reflection type optical fulgurite, and second surveys wide module connecing for reflection type optical fulgurite
Receiving end.
Described first surveys receiving terminal of the wide module for reflection type optical fulgurite, and second surveys wide module sending out for reflection type optical fulgurite
Penetrate end.
The system also includes the evidence obtaining unit for being placed in distal end arched door frame upper end, vehicle row during for recording measuring vehicle profile
Enter state.
First trigger includes one group of correlation type photocell, be separately mounted to near-end arched door frame crossbeam central authorities and its
Projected position on horizontal plane.
The wheelbase trigger includes that one group of correlation type photocell, emission phototube are installed on arched door and erect post side, connect
Receive photocell to be installed in the middle of sense channel and the position near near-end arched door frame.
This utility model is bright compared with prior art, with advantages below：(1) the technical program simple structure, by distance
Sensor (laser radar) and measurement sensor (photocell) are constituted, and installation site is convenient, it is easy to safeguard；(2) tested towed vehicle
Only need low speed by sense channel, without the need for stopping, vehicle can draw measurement result completely after sense channel, entirely
Detection time was compared with manual measurement not over 30 seconds, is greatlyd save human cost and is improve time efficiency；(3) profit
Accurately measuring without dead angle for the height and width to differing heights towed vehicle is realized with 2 laser radars installed in differing heights；(4)
Length and all of train axle using the towed vehicle in the laser radar accurate measurement motion installed in headstock traveling dead ahead
Away from；(5) certainty of measurement is by error analyses and experiment test, in the case where ensureing that installation accuracy meets the requirements, each value
Measurement error can be controlled within 1%.
This utility model is described further with reference to Figure of description.
Description of the drawings
Fig. 1 is the first exemplary construction schematic diagram of this utility model.
Fig. 2 is second exemplary construction schematic diagram of this utility model.
Fig. 3 is the third exemplary construction schematic diagram of this utility model.
Fig. 4 is this utility model system overall framework schematic diagram.
Fig. 5 is vehicle commander's measuring principle figure, and wherein (a) is that headstock passes through vehicle commander's measuring principle figure during entrance, (b) logical for the tailstock
Vehicle commander's measuring principle figure when crossing entrance.
Fig. 6 is overall width overall height measuring principle figure.
Fig. 7 is wheelbase measuring principle figure, and wherein (a) is that headstock passes through vehicle commander's measuring principle figure during entrance, (b) logical for the tailstock
Vehicle commander's measuring principle figure when crossing entrance.
Specific embodiment
As shown in Figure 1,2,3, 4, three examples of the device are all single by three distance measuring units, two vehicle commander's measurement controls
Unit, two wheelbase measure-controlling units, evidence obtaining unit and integrated data processing unit compositions, sense channel are parallel and vertical by two
Straight two arched door framves in horizontal plane are constituted.The distally mounted arched door frame crossbeam central authorities of one laser radar, two radars are not with
With height on two columns of near-end arched door frame.3 laser single line radars are separately mounted to two by the present invention program
On arched door frame, wherein headstock laser radar is the range sensor for measuring towed vehicle vehicle commander and wheelbase, distally mounted arched door frame
Centre position, the crossbeam of the scanning plane of radar perpendicular to near-end arched door frame.Both sides laser radar is measurement overall width and overall height
Range sensor, be separately mounted on two columns of arched door, setting height(from bottom) is different.When both sides laser radar is installed, scanning
Face is parallel with column and the scanning plane of two radars is relative, but should there is a less angle between scanning plane, it is to avoid two
Echo between radar produces interference.One group of correlation type photocell is central with which in the horizontal plane installed in near-end arched door frame crossbeam
Projected position.Another group of correlation type photocell is arranged between two arched door framves, near the position of near-end arched door frame, launching light
Fulgurite is installed on arched door and erects post side, receives photocell and is installed in the middle of sense channel, the reception photocell and distal end arched door
On laser radar on frame, and near-end arched door frame crossbeam, photocell constitutes a plane, and the plane is perpendicular to horizontal plane.Separately
Outward, the transmitting terminal of two groups of correlation type photocells, corresponding receiving light are installed on one heel post of near-end arched door frame in Fig. 1 examples 1
Fulgurite be placed in tested towed vehicle compartment beginning and hook before vehicle detection at proper height.Near-end arch in Fig. 2 examples 2
The transmitting terminal of two groups of reflection type optical fulgurites is installed on one heel post of door frame, corresponding reflection end be placed in before vehicle detection by
Survey at towed vehicle compartment beginning and hook.One scope larger anti-is installed on one heel post of near-end arched door frame in Fig. 3 examples 3
Two transmitting terminals are respectively disposed on tested towed vehicle compartment beginning and hook before vehicle detection by the reflection end of emitting photocell
Place.
Measurement process：Tested towed vehicle enters Measurement channel by Measurement channel entrance, when towed vehicle compartment passes through column
During upper vehicle commander's trigger element, give headstock distance measuring unit one trigger, obtain current measurement value L1, when towed vehicle compartment
Tail by crossbeam, during vehicle commander's trigger element, headstock distance measuring unit obtains a measured value L2, surveyed by the two by software
Value can calculate towed vehicle vehicle commander automatically.When towed vehicle hook triggering column on wheelbase measurement trigger element when, to headstock away from
First from measuring unit trigger, obtains current measurement distance Lz, surveys when each group of wheel of towed vehicle presses through ground wheelbase
During amount trigger element, headstock distance measuring unit all obtains a measured value Li, and software can be counted automatically by this group of measured value
Calculate the vehicle wheel base length of towed vehicle.Left and right two apart from distance measuring unit can direct measurement go out the maximum height of towed vehicle.Drag
Trailer by arched door when, the distance value that the range sensor of left and right two is passed back, it is considered to which the width of arched door can be calculated and be dragged
The Breadth Maximum of trailer.
System performance：
(1) using length and the institute of the towed vehicle in the laser radar accurate measurement motion installed in headstock traveling dead ahead
Some train wheelbases.
(2) when measuring towed vehicle length, vehicle refitting part and space, perfect measurement vehicle commander effectively can be recognized.
(3) using 2 laser radars installed in differing heights realize the height and width to differing heights towed vehicle without dead
Angle accurately measures.
Concrete measurement scheme
(1) vehicle commander's scheme is measured
Such as Fig. 5 (a) (b), tested towed vehicle is by Measurement channel entrance, the photocell triggering being placed at towed vehicle compartment
Corresponding photocell on column, gives headstock distance sensor (laser radar) trigger, and now Laser Radar Scanning is obtained
With headstock apart from D1, normal vector (direction the is downward) angle by laser radar and ground is θ 1, calculates laser radar and car
Most short projector distance between head on the ground is L1.Vehicle low speed moves forward, and until the tailstock passes through crossbeam photocell, gives
One trigger of headstock distance sensor, now Laser Radar Scanning obtain with headstock apart from D2, by laser radar with
The normal vector angle on ground is θ 2, and the most short projector distance calculated between laser radar and headstock on the ground is L2, so may be used
With can effective detection go out repacking and the gap of vehicle, completely detect that the total length of towed vehicle, towed vehicle length can be calculated
For：L1-L2.
(2) length scheme is measured
Such as Fig. 6, portal frame width (is separately mounted to the throwing on the ground of two laser radars on two edge column of portal frame
Shadow distance) it is L3.After towed vehicle enters sense channel, the laser radar real time scan car body of both sides differing heights, it is ensured that complete
Whole without dead angle scan car body, obtain car body detection data.The most short projector distance between present laser radar and car body is calculated, point
Be not designated as L4 and L5, L4 and L5 can by actual range D1, the D2 between laser radar and car body and with horizontal plane normal vector (direction
Angle theta 1, θ 2 between downwards) is calculated：L4=min { D1*sin θ 1 }, L5=min { D2*sin θ 2 }.The then width of towed vehicle
Degree can be calculated as：L3-L4-L5.
(3) overall height scheme is measured
As Fig. 6, the installation site of both sides laser radar are one high and one low, its setting height(from bottom) (height from the ground) value is respectively
L61, L62, and L61>L62.When towed vehicle passes through arched door, both sides laser radar can scan the top for obtaining towed vehicle both sides
Position, side radar scanning are D1 to topmost position distance, and normal vector (direction the is downward) angle with ground is θ 1, then can be with
Calculating height of the towed vehicle in the side is：L7=D1*sin (θ 1-90 °)+L61.Opposite side radar scanning is to topmost position
Distance is D2, and normal vector (direction the is downward) angle with ground is θ 2, then can calculate height of the towed vehicle in the side and be：L8
=D2*sin (θ 2-90 °)+L62.
In order to ensure the precision for measuring, for big-and-middle-sized towed vehicle, the measured value L7 away from the higher radar in ground is high for which
Degree measured value；For small-sized towed vehicle, the measured value L8 away from the relatively low radar in ground is its height measurements.
(4) measurement axis are away from scheme
As Fig. 7 (a) (b), tested towed vehicle pass through sense channel, it is placed in photocell at its hook and triggers on corresponding column
During photocell, give headstock laser radar one trigger, laser radar obtains current measurement distance Lz (laser radar A and car
Beeline of the head between floor projection)；When each group of wheel of towed vehicle passes through ground photocell, laser radar all obtains one
Individual measured value Li, when towed vehicle stops detection by sense channel completely, the process software of backend information datatron passes through this
One group of measured value calculates the vehicle wheel base length of towed vehicle.Last measured value is Lm, then vehicle wheel base length can be calculated as：Lz-Lm.
Simultaneity factor have recorded the data message of whole wheel shafts, can calculate the distance of corresponding wheel shaft according to actual requirement.
Claims (7)
1. a kind of towed vehicle profile and wheelbase automatic measurement system, it is characterised in that including sense channel, near-end arched door frame, remote
End arch door frame, distance measuring unit, vehicle commander's measuring unit, overall height measuring unit, wheelbase measuring unit, overall width measuring unit, place
Reason unit；
The arched door frame is arranged perpendicular to sense channel, and sense channel passes through arched door frame；
The distance measuring unit includes three range laser radars, is respectively placed in distal end arched door frame upper end centre position and near-end
At the differing heights of two columns of arched door frame；
Vehicle commander's measuring unit includes the first trigger, and the trigger is produced when passing through the trigger respectively in headstock and the tailstock
One trigger is to the range laser radar being placed on the arched door frame of distal end；
The overall height measuring unit and the public same trigger of vehicle commander's measuring unit, the trigger is when headstock passes through the trigger
A trigger is produced to the range laser radar being placed at the differing heights of near-end arched door two columns of frame；
The wheelbase measuring unit includes wheelbase trigger, the trigger whenever pressure wheel is out-of-date produce respectively a trigger to
The range laser radar being placed on the arched door frame of distal end；
The overall width measuring unit includes the wide module of the be respectively placed on two columns of near-end arched door frame first survey and is placed in be measured
Vehicle both sides and the wide module of the second survey that mates with the wide module of the first survey, described first surveys wide module and second surveys between width module
By the reflection measurement overall width of signal；
The processing unit is used for according to range laser radar and surveys the data acquisition vehicle's contour parameter that wide module is obtained.
2. measuring system according to claim 1, it is characterised in that described first surveys wide module for correlation type photocell
Transmitting terminal, second surveys receiving terminal of the wide module for correlation type photocell.
3. measuring system according to claim 1, it is characterised in that described first surveys wide module for reflection type optical fulgurite
Transmitting terminal, second surveys receiving terminal of the wide module for reflection type optical fulgurite.
4. measuring system according to claim 1, it is characterised in that described first surveys wide module for reflection type optical fulgurite
Receiving terminal, second surveys transmitting terminal of the wide module for reflection type optical fulgurite.
5. measuring system according to claim 1, it is characterised in that the system also includes being placed in distal end arched door frame upper end
Evidence obtaining unit, vehicle travel condition during for recording measuring vehicle profile.
6. measuring system according to claim 1, it is characterised in that first trigger includes one group of correlation type photoelectricity
Pipe, is separately mounted to near-end arched door frame crossbeam central authorities and its projected position in the horizontal plane.
7. measuring system according to claim 1, it is characterised in that the wheelbase trigger includes one group of correlation type light
Fulgurite, emission phototube are installed on arched door and erect post side, receive photocell and are installed in the middle of sense channel and encircle near near-end
The position of door frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521134903.5U CN206019594U (en) | 2015-12-30 | 2015-12-30 | A kind of towed vehicle profile and wheelbase automatic measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521134903.5U CN206019594U (en) | 2015-12-30 | 2015-12-30 | A kind of towed vehicle profile and wheelbase automatic measurement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206019594U true CN206019594U (en) | 2017-03-15 |
Family
ID=58240961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521134903.5U Expired - Fee Related CN206019594U (en) | 2015-12-30 | 2015-12-30 | A kind of towed vehicle profile and wheelbase automatic measurement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206019594U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253896A (en) * | 2018-03-06 | 2018-07-06 | 大连理工大学 | A kind of car dimension measuring device based on laser sensor |
| CN108535138A (en) * | 2018-05-04 | 2018-09-14 | 鹤壁昊海电气有限公司 | Proportion detection device and method for green channel vehicle |
| CN108627112A (en) * | 2018-05-09 | 2018-10-09 | 广州市杜格科技有限公司 | Vehicle axis pin is away from dynamic measurement method |
| CN108895968A (en) * | 2018-05-15 | 2018-11-27 | 天津杰泰高科传感技术有限公司 | vehicle measuring device and method |
| CN110031844A (en) * | 2017-12-01 | 2019-07-19 | 德尔福技术有限责任公司 | Detection system |
| CN110246335A (en) * | 2019-05-29 | 2019-09-17 | 中山安信通机器人制造有限公司 | The identifying system and its recognition methods of vehicle dynamic outline |
| CN111830526A (en) * | 2020-09-17 | 2020-10-27 | 上海驭矩信息科技有限公司 | Container positioning method and device based on multi-line laser data fusion |
| CN114111606A (en) * | 2020-08-25 | 2022-03-01 | 同方威视技术股份有限公司 | System for measuring vehicle parameters and method for measuring vehicle parameters |
| CN114624726A (en) * | 2022-03-17 | 2022-06-14 | 南通探维光电科技有限公司 | Wheel axle identification system and wheel axle identification method |
| CN108535138B (en) * | 2018-05-04 | 2024-04-16 | 鹤壁昊海电气有限公司 | Specific gravity detection device and method for green channel vehicle |
-
2015
- 2015-12-30 CN CN201521134903.5U patent/CN206019594U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031844A (en) * | 2017-12-01 | 2019-07-19 | 德尔福技术有限责任公司 | Detection system |
| CN110031844B (en) * | 2017-12-01 | 2024-01-16 | 德尔福技术有限责任公司 | Detection system |
| CN108253896A (en) * | 2018-03-06 | 2018-07-06 | 大连理工大学 | A kind of car dimension measuring device based on laser sensor |
| CN108535138A (en) * | 2018-05-04 | 2018-09-14 | 鹤壁昊海电气有限公司 | Proportion detection device and method for green channel vehicle |
| CN108535138B (en) * | 2018-05-04 | 2024-04-16 | 鹤壁昊海电气有限公司 | Specific gravity detection device and method for green channel vehicle |
| CN108627112A (en) * | 2018-05-09 | 2018-10-09 | 广州市杜格科技有限公司 | Vehicle axis pin is away from dynamic measurement method |
| CN108895968B (en) * | 2018-05-15 | 2020-08-25 | 天津杰泰高科传感技术有限公司 | Vehicle measuring device and method |
| CN108895968A (en) * | 2018-05-15 | 2018-11-27 | 天津杰泰高科传感技术有限公司 | vehicle measuring device and method |
| CN110246335A (en) * | 2019-05-29 | 2019-09-17 | 中山安信通机器人制造有限公司 | The identifying system and its recognition methods of vehicle dynamic outline |
| CN114111606A (en) * | 2020-08-25 | 2022-03-01 | 同方威视技术股份有限公司 | System for measuring vehicle parameters and method for measuring vehicle parameters |
| CN111830526A (en) * | 2020-09-17 | 2020-10-27 | 上海驭矩信息科技有限公司 | Container positioning method and device based on multi-line laser data fusion |
| CN111830526B (en) * | 2020-09-17 | 2020-12-29 | 上海驭矩信息科技有限公司 | Container positioning method and device based on multi-line laser data fusion |
| WO2022057747A1 (en) * | 2020-09-17 | 2022-03-24 | 上海驭矩信息科技有限公司 | Container positioning method and apparatus based on multi-line laser data fusion |
| US11841436B2 (en) | 2020-09-17 | 2023-12-12 | Shanghai Master Matrix Information Technology Co., Ltd. | Container positioning method and apparatus based on multi-line laser data fusion |
| CN114624726A (en) * | 2022-03-17 | 2022-06-14 | 南通探维光电科技有限公司 | Wheel axle identification system and wheel axle identification method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206019594U (en) | A kind of towed vehicle profile and wheelbase automatic measurement system | |
| CN103954222B (en) | A kind of vehicle's contour and wheelbase automatic measurement system and Measurement Algorithm | |
| CN105403162B (en) | The automatic testing method of semitrailer outer profile size | |
| CN107945530B (en) | Vehicle overrun detection system and detection method thereof | |
| CN206177238U (en) | Vehicle gabarit size detection appearance | |
| CN104964672B (en) | A kind of long-distance barrier detecting sensor based on line-structured light | |
| CN106679575B (en) | A kind of vehicle super-high ultra-wide detecting system and method based on laser calibration | |
| CN102507600B (en) | Automatic abrasion detection device for pantograph pan of high-speed locomotive | |
| CN103954234B (en) | A kind of vehicle's contour and wheelbase self-calibration Measurement Algorithm | |
| CN208206154U (en) | A kind of rail polling mileage counting device based on line-structured light 3-D scanning | |
| CN201269748Y (en) | Full-automatic apparatus for measuring vehicle contour dimension according to moving vehicle image | |
| CN107390285B (en) | A kind of foreign body detection system for airfield runway based on structure light | |
| CN202630925U (en) | Intelligent system for measuring contour and dimension of vehicle | |
| CN104183133A (en) | Method for acquiring and transmitting road traffic flow dynamic information | |
| CN102252619A (en) | Displacement distance measuring and displaying system in airplane berthing process | |
| CN207850304U (en) | A kind of electrification railway contact net detecting system | |
| CN105136153B (en) | A kind of lane line exact position harvester and acquisition method | |
| CN101845788A (en) | Cement concrete road surface dislocation detection device and method based on structured light vision | |
| CN103335601A (en) | Quick and automatic detection device for overall dimension of moving vehicle | |
| CN103438809A (en) | Vehicle-width measurement method and device based on area-array / linear-array cameras | |
| CN204881619U (en) | Remote obstacle perception sensor based on line structure light | |
| CN103983196A (en) | Car height on-line measurement method based on area-array/line-scan digital camera | |
| CN106355895A (en) | Traffic flow and vehicle speed collecting device and method based on infrared matrixes | |
| CN114003849B (en) | Multi-lane non-contact type automatic calculation method and system for vehicle axle number | |
| CN202853581U (en) | Device for extracting contour of moving vehicle so as to recognize vehicle type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 Termination date: 20201230 |