CN201166920Y - Apparatus for acquiring traffic information based on linear array CCD camera imaging - Google Patents
Apparatus for acquiring traffic information based on linear array CCD camera imaging Download PDFInfo
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- CN201166920Y CN201166920Y CNU2008200280977U CN200820028097U CN201166920Y CN 201166920 Y CN201166920 Y CN 201166920Y CN U2008200280977 U CNU2008200280977 U CN U2008200280977U CN 200820028097 U CN200820028097 U CN 200820028097U CN 201166920 Y CN201166920 Y CN 201166920Y
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Abstract
The utility model discloses a traffic information collection device which takes an image based on a liner array CCD. The device comprises two linear array CCD cameras at a certain distance arranged on a bracket above a road section; each linear array CCD camera is provided with a big auxiliary lighting light; a plurality of auxiliary planar array cameras are installed on the site 15 meters away from the two linear array CCD cameras; the auxiliary planar array cameras are positioned in the middle of a driveway and cut-off lines of the driveway respectively; wherein, the auxiliary planar array camera in the middle of the driveway snaps a picture of vehicles driving along the road, and the auxiliary planar array cameras on the cut-off lines of the driveway takes a standard full shot; when a vehicle drives on the road section, the linear array CCD camera can collect the linear array image data of the vehicle driving on the road section, and process and analyze the data to obtain traffic parameters such as traffic flow, vehicle speed, vehicle density and road utilization; and the planar array cameras snap pictures of vehicles and analyze and process the pictures to obtain license plate information.
Description
Technical field
The utility model belongs to technical field of video processing, relate to a kind of traffic information acquisition system, particularly a kind of traffic information acquisition system based on the line array CCD imaging, this system utilizes CCD to gather the linear array images of the vehicle that passes through the detection section continuously fast, obtain about automobile storage in various transport information parameters such as, car speed, car plane profile, type of vehicle, traffic occupation rate and flows from this linear array images, realize the monitoring of road traffic condition is passed judgment on and to the real-time detection of traffic events.
Technical background
The real-time collection of Traffic Information is one of key content of intelligent transportation information acquisition, on road, detect various traffic parameters such as the magnitude of traffic flow, car speed, vehicle density and road occupancy in real time, be traffic programme, traffic administration, road maintenance department provides important data and carries out foundation, for correcting the break in traffic rules and regulations behavior fast, detection traffic hazard escape and motor vehicle robber robs case fast provides important techniques means and evidence, and the safety operation of highway and the work efficiency of raising highway traffic control department are had crucial meaning.
At present, the transport information video acquisition system of relatively using always is the traffic information acquisition system based on area array cameras and inductive coil technology.This type systematic utilizes the principle of electromagnetic induction to detect vehicle, when vehicle process magnetic test coil, starts area array cameras the vehicle of process is captured.This system sensor is simple, and input signal is easily analyzed, and do not need complicated calculating, but its installation need destroy the road surface, reduces the load-bearing capacity on road surface, and inconvenience is installed simultaneously, and maintenance workload is big.Can also carry out analyzing and processing to the image that area array cameras is captured in addition and obtain various traffic parameters such as the magnitude of traffic flow, car speed, vehicle density and road occupancy.But owing to be subjected to the not influence of high factor of area array CCD resolution, image frame rate, the measuring accuracy of some transport information parameters such as car speed is not high.
Summary of the invention
At defective or deficiency that above-mentioned existing system exists, the purpose of this utility model exists, and proposes a kind of traffic information acquisition system based on the line array CCD imaging, and this system can improve the precision of measuring the transport information parameter.
In order to realize above-mentioned task, the utility model is taked following technical solution:
A kind of traffic information collecting apparatus based on the line array CCD imaging is characterized in that, this device comprises:
Two linear array CCD cameras, between two line array CCDs at a distance of certain distance, two linear array CCD cameras are arranged on the support of two road section tops, the directed in orthogonal of two linear array CCD cameras is downward, each linear array CCD camera is furnished with the floor light headlight, and the sensing of floor light headlight is pointed to identical with linear array CCD camera;
15 meters in two linear array CCD camera the place aheads of distance, a plurality of auxiliary surface array cameras are installed, these auxiliary surface array cameras lay respectively on the cut-off rule in the centre in track and track, wherein, the auxiliary surface array camera of the centre in track is captured the vehicle by road, and the auxiliary surface array camera on the cut-off rule of track is used for pan-shot;
When vehicle passes through this road section, linear array CCD camera can collect the linear array images data by the road section vehicle, and carry out Treatment Analysis, obtain the traffic parameter of the magnitude of traffic flow, car speed, vehicle density and road occupancy, area array camera is captured vehicle image, carries out analyzing and processing and obtains license board information.
The utility model has been owing to adopted linear array CCD camera, its resolution height, and linear array images sequence vehicle target is clear, have any background interference hardly.Show that through the field experiment application vehicle speed measuring method based on the linear array images sequence of the present utility model is effective, the rate accuracy height is applicable to the occasions such as vehicle speed measuring in the traffic block port.
Description of drawings
Fig. 1 is the traffic information acquisition system layout vertical view based on the line array CCD imaging of the present utility model;
Fig. 2 is the side view of Fig. 1;
Be described in further detail of the present utility model below in conjunction with accompanying drawing.
Embodiment
Traffic information acquisition system based on the line array CCD imaging of the present utility model, specific embodiments is as follows:
Referring to Fig. 1, Fig. 1 is the CCD imaging traffic information system field layout vertical view of Four-Lane Road configuration for the utility model, according to shown in Figure 1: with the Four-Lane Road is example, traffic information acquisition system based on the line array CCD imaging of the present utility model has been installed four linear array CCD camera machines 1 (up-run lane and descending track are respectively installed 2), four assist illuminators 2 (up-run lane and descending track are respectively installed 2), each assist illuminator 2 disposes ballast resistor 3, two light-operated switches 4 (up-run lane and descending track are respectively installed 1), (up-run lane and descending track are respectively installed 3 to six high-resolution auxiliary surface array cameras 5 of special use, wherein aim at the track cut-off rule for 1), 7, one industry control cabinet-type air conditioners that are provided with in the roadside of configuration intelligent LED light aid on each auxiliary surface array camera 5.Above equipment is installed in the relevant position of the T type column 6 in up-run lane and descending track according to Fig. 1.
2) accompanying drawing 2 is a system for field layout side view, according to shown in Figure 2: auxiliary surface array camera 5, linear array CCD camera 1 and assist illuminator 2 are installed in the top, track, with the about 6m of the vertical range on ground, two linear array CCD camera 1 respective horizontal are apart from about 2 meters, auxiliary surface array camera 5 adopts different T type supports 6 to install with linear array CCD camera 1, and respective horizontal is apart from about 15m.
3) various device specifically install and function introduction as follows:
A. on the support of two road sections of certain distance (2 meters), two linear array CCD cameras 1 are being set, according to the imaging characteristics of linear array CCD camera 1 (becoming vertical relation and the composition face by between line and the object that moves), linear array CCD camera 1 direction directed in orthogonal is downward; Be furnished with floor light headlight 2 (being used for the light filling at night) on the linear array CCD camera simultaneously, this floor light headlight 2 direction with linear array CCD camera 1 respectively is the same, also vertically downward.Linear array CCD camera just can collect the linear array images data by the road section vehicle, draws various transport information parameters such as car speed by the software processes analysis then.
B., auxiliary surface array camera 5 is installed on each direction of traffic, and the installation site is in the centre in two tracks; Install an auxiliary surface array camera 5 again additional and aim at the track cut-off rule.Like this, a direction has three cameras to be used for license plate identification, and mutually some is overlapping for the field range of three cameras, and the track cut-off rule also has an auxiliary surface array camera 5 to be used to pan in addition.Under the lower situation of ambient light illumination (for example night), system opens 7 pairs of auxiliary surface array cameras of LED intelligence light filling lamp 5 automatically and carries out light filling.Under strong illumination (for example fine high noon), system can adjust the imaging pattern of camera automatically, uses the exposure of the method control chart picture of soft or hard combination, suppresses the high light influence, guarantees that the picture exposure is normal, and imaging is clear.System starts the auxiliary surface array camera 5 in corresponding track then according to the track at the spectral discrimination vehicle place of linear array CCD camera candid photograph, if vehicle is in the centre in two tracks, with the auxiliary surface array camera 5 that starts on the cut-off rule of track.Therefore, as long as guarantee that the width L2 of the overlapping area, visual field of each auxiliary surface array camera 5 is the width of a licence plate, and L1 is less than half of a car width.Like this, each car all has a width of cloth licence plate feature and a width of cloth vehicle panoramic pictures, has guaranteed the identification of licence plate.
C. two floor light headlights 3 and ballast resistor 4 all are installed in two ends on the T type support 6 respectively, and support is fixed on the portal frame, and with linear array CCD camera 1 parallel on support 6 and at a distance of about 30cm.Can guarantee that like this all there are illuminating lamp 2 light fillings on each linear array CCD camera 1 next door, like this, when vehicle passed through this linear array CCD camera 1, the image that this linear array CCD camera 1 is gathered was relatively more consistent.Will note when mounted: electric ballast 3 must not surpass 2m to the power lead between the illuminating lamp 2, otherwise can influence luminous.When external environment brightness is not enough, light-operated switch 4 is opened automatically by software setting, two illuminating lamps 2 just begin to light, because its light is stronger, can be used as the floor light of linear array CCD camera 1 imaging at night, also can night as street lighting, and remind the existence of passing this traffic information acquisition system of driver.It should be noted that ballast resistor 3 wants to use electric ballast, can not be with common telefault ballast resistor, because the ballast resistor of common telefault has the 50HZ power frequency to disturb, the cycle that shows as on image is that the brightness of 50HZ changes, and influences picture quality, is unfavorable for that video triggers.
Claims (4)
1. based on the traffic information collecting apparatus of linear array CCD video camera imaging, it is characterized in that, comprise two linear array CCD cameras on the support that is arranged on two road section tops at a distance of certain distance, the directed in orthogonal of two linear array CCD cameras is downward, each linear array CCD camera is furnished with the floor light headlight, the sensing of floor light headlight is pointed to identical with linear array CCD camera, 15 meters in two linear array CCD camera the place aheads of distance, a plurality of auxiliary surface array cameras are installed, and these auxiliary surface array cameras lay respectively on the cut-off rule in the centre in track and track.
2. the traffic information collecting apparatus based on linear array CCD video camera imaging as claimed in claim 1 is characterized in that, the distance between described two line array CCDs is 2m.
3. the traffic information collecting apparatus based on linear array CCD video camera imaging as claimed in claim 1 is characterized in that, disposes electric ballast on the described floor light headlight.
4. the traffic information collecting apparatus based on linear array CCD video camera imaging as claimed in claim 1 is characterized in that, described auxiliary surface array camera disposes intelligent LED light filling lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200280977U CN201166920Y (en) | 2008-01-11 | 2008-01-11 | Apparatus for acquiring traffic information based on linear array CCD camera imaging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200280977U CN201166920Y (en) | 2008-01-11 | 2008-01-11 | Apparatus for acquiring traffic information based on linear array CCD camera imaging |
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| CN201166920Y true CN201166920Y (en) | 2008-12-17 |
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| CNU2008200280977U Expired - Fee Related CN201166920Y (en) | 2008-01-11 | 2008-01-11 | Apparatus for acquiring traffic information based on linear array CCD camera imaging |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186007A (en) * | 2010-12-17 | 2011-09-14 | 王光树 | A remote sensing observation mirror |
| CN101807347B (en) * | 2009-02-16 | 2012-09-19 | 北京汉王智通科技有限公司 | Multilane vehicle monitoring method and system |
| CN103837869A (en) * | 2014-02-26 | 2014-06-04 | 北京工业大学 | Vector-relation-based method for calibrating single-line laser radar and CCD camera |
| CN110021172A (en) * | 2019-05-06 | 2019-07-16 | 北京英泰智科技股份有限公司 | A kind of vehicle total factor method for collecting characteristics and system |
-
2008
- 2008-01-11 CN CNU2008200280977U patent/CN201166920Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807347B (en) * | 2009-02-16 | 2012-09-19 | 北京汉王智通科技有限公司 | Multilane vehicle monitoring method and system |
| CN102186007A (en) * | 2010-12-17 | 2011-09-14 | 王光树 | A remote sensing observation mirror |
| CN103837869A (en) * | 2014-02-26 | 2014-06-04 | 北京工业大学 | Vector-relation-based method for calibrating single-line laser radar and CCD camera |
| CN103837869B (en) * | 2014-02-26 | 2016-06-01 | 北京工业大学 | Based on single line laser radar and the CCD camera scaling method of vector relations |
| CN110021172A (en) * | 2019-05-06 | 2019-07-16 | 北京英泰智科技股份有限公司 | A kind of vehicle total factor method for collecting characteristics and system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20120111 |