CN106448189A - Multilane speed measuring and block port triggering method and device based on microwaves - Google Patents
Multilane speed measuring and block port triggering method and device based on microwaves Download PDFInfo
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- CN106448189A CN106448189A CN201610952271.6A CN201610952271A CN106448189A CN 106448189 A CN106448189 A CN 106448189A CN 201610952271 A CN201610952271 A CN 201610952271A CN 106448189 A CN106448189 A CN 106448189A
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
- G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
Abstract
The invention discloses a multilane speed measuring and block port triggering device based on microwaves. The device comprises a power supply module, an upper computer configuration module, a microwave radar sensor, a signal processing module, a video configuration module, a video sensor and a display storage module. The invention further discloses a multilane speed measuring and block port triggering method based on the microwaves, which comprises the steps that S1, module configuration is performed, and a trigger position is set; S2, the microwave radar sensor scans a detection region; S3, a radar detects target information and performs judgment on an illegal act; S4, the video sensor snapshots; S5, the video sensor performs recognition on license plate, size and vehicle model information; S6, pictorial information of all vehicles is generated; and S7, platform storage and illegal act evidence collecting are performed. The method and the device disclosed by the invention ensure that one microwave radar sensor can cover multiple lanes, and each lane is equipped with video sensor coverage, thereby being high in economic benefit, and suitable for application and popularization.
Description
Technical field
The invention belongs to intelligent transportation field, more particularly it relates to a kind of multilane based on microwave tests the speed
Method and apparatus with bayonet socket triggering.
Background technology
The wide variety of velocity measuring technique of road vehicle intelligent monitoring and recording system mainly have ground induction coil, video, laser and
Detections of radar mode.
Ground induction coil detection is when vehicle enters toroidal inductor and forms magnetic field, causes the frequency of tuning current in circuit
Rate or phase place change, detection process unit draws the output for detecting vehicle by the response to frequency or phase place change
Signal.Spacing according to former and later two coils calculates speed divided by vehicle by the time difference of coil, with low cost, accuracy
Height, the advantages of high reliability.The method have the disadvantage maintenance cost height, it is easy to by current vehicle overstock or earth's surface cold and hot expansion and
The destruction of compression；The operation such as construction is complicated to be needed to carry out to cut, pour, and affect normal traffic order；The higher survey of speed
Amount error is bigger；Car plate etc. cannot be seen clearly.
Video Detection is the technology that Computer Vision and computer graphical technology of identification combine.He is entered with vehicle
When entering detection zone, background gray levels change, and so as to produce detection signal, obtain traffic by related algorithm Treatment Analysis
The traffic parameters such as stream.Advantage is that installation is simple and convenient, can be visually seen information of vehicles.The method has the disadvantage to be highly susceptible to shine
The impact of the factors such as bright, weather condition, accuracy of detection stability is not high, poor real.
Narrow ripple detections of radar is mainly tested the speed using doppler shift effect.During work, detector is to travel direction vehicle
Transmitting microwave signal, the microwave signal runs into target back reflection, and the frequency of echo shifts, so as to detect the speed of vehicle
Degree.Using microwave detector to traffic flow, occupation rate and Bus- Speed Monitoring, not only ageing good, stability is high, and for detection
Environmental requirement relatively low.But a disadvantage is that big dolly trigger position is inconsistent, debugging is difficult, detecting distance is short, it is difficult to capture low
The vehicle that speed is travelled.
Content of the invention
For cross-line when solving narrow ripple detections of radar present in prior art, with appearance of vehicle leakiness car, trigger position is not fixing,
Cause Car license recognition precision not high, a radar corresponds to a track, the technological deficiency such as loaded down with trivial details is debugged, the present invention proposes a kind of base
In the multilane of microwave test the speed with bayonet socket triggering method and apparatus.
The technical solution adopted in the present invention is：
The device that a kind of multilane based on microwave is tested the speed with bayonet socket triggering, described device includes power module, host computer
Configuration module, microwave radar sensor, signal processing module, video configuration module, video sensor and display memory module；
The power module respectively with the host computer configuration module, the microwave radar sensor, the signal processing
Module, the video configuration module, the video sensor and the display memory module are electrically connected with and provide corresponding electricity
Source；
The host computer configuration module realizes communication and the transmission with the microwave radar sensor, institute using network interface
State signal processing module to communicate to connect with the microwave radar sensor, the signal processing module senses the microwave radar
The data of device output carry out pretreatment, and the video configuration module realizes the communication with the video sensor using network interface
With transmission, the video sensor communicated to connect with the signal processing module, the video sensor and described shows storage
Module is communicated to connect.
Further, the signal processing module includes block isolating circuit, voltage comparator, gain-programmed amplifier.
A kind of method that multilane based on microwave is tested the speed with bayonet socket triggering, comprises the steps of：
The first step：Module is configured, and sets trigger position；In bayonet socket application section, first with host computer configuration module and video
Configuration module is configured to microwave radar sensor and video sensor respectively according to lane information, in the position of trigger
Upper setting virtual coil position；
Second step：Microwave radar sensor is scanned to detection zone；Microwave radar sensor is examined at virtual coil
Target vehicle process is measured, by triggering of the moving vehicle to virtual coil, target vehicle detection in the picture has been completed, from
And position in the picture when drawing vehicle triggering virtual coil, moving vehicle is completed in image by virtual coil trigger mechanism
In detection and positioning, finally by calculating the exact position of the geometric center as vehicle in the picture of target vehicle；
3rd step：Radar is detected to target information, and carries out infringement judgement；Carry out lane detection and compacting line inspection
Survey, carry out the judgement of target place track and whether be compacted line to judge, carry out target velocity detection and the whether retrograde detection of target；
4th step：Video sensor is captured；Microwave radar sensor is communicated with video sensor by network, when microwave thunder
Reach sensor detect detection section have vehicle to reach and obtain the result data that tests the speed, immediately by measurement data and illegal information reality
When be sent to video sensor on multiple tracks, video sensor is triggered candid photograph and belongs to according to the lane information of each self-configuring
The target in oneself track number；
5th step：Video sensor is identified car plate and big carriage type information；Video sensor is to the picture that photographed
Information is processed, and measures license plate number and target vehicle type, and the candid photograph that is added to according to technology such as gray value, data base's contrasts
In image；
6th step：Produce the pictorial information of all vehicles；Radar information and pictorial information are integrated, and all information are entered
Row object matching, synthesizes in pictures；The video sensor of candid photograph is known automatically and vehicle license plate number and type of vehicle, and cuts
One or more illegal vehicle image is taken, through image real time transfer, corresponding information such as section, target vehicle speed, hypervelocity hundred
Divide ratio, if drive in the wrong direction, if compacting line etc. is synthesized in picture, and file bag is generated, for client's inquiry and as to illegal
The foundation of punishment；
7th step：Platform is stored, and infringement is collected evidence；The file bag of production is reached display by network by video sensor
Memory module, all of vehicle pictures is placed in a file bag and is preserved, have the information of vehicles of illegal information in another module
Storage, facilitates relevant department to investigate and prosecute the vehicle.
Further, in the 3rd step, in the following manner come carry out lane detection and compacting line detection, target institute
Judge and whether be compacted line judgement, target velocity detection and the whether retrograde detection of target in track：
Centered on microwave radar sensor, point sets up coordinate system schematic diagram, and virtual coil is L from the fore-and-aft distance of radar,
The a length of M in track；
The range formula of target is：
The speed formula of target is：
It is Y direction parallel to track horizontal direction, positive direction is the microwave radar sensor beam direction of the launch；
It is X-direction perpendicular to track horizontal direction, positive direction is the microwave radar sensor beam direction of the launch；
Target is α with the horizontal deflection angle of microwave remote sensor radar, and vertical luffing angle is θ；
Detected target is with respect to the radial velocity of sensor：Vradial；
The radial distance of detected target range microwave radar sensor：Dradial；
Then target is located at X-direction coordinate figure in coordinate system：
IDx_X_Coordinate=(Dradial*sinθ)*sinα；Formula (3)
Target is located at Y-direction coordinate figure in coordinate system：
IDx_Y_Coordinate=(Dradial*sinθ)*cosα；Formula (4)
Detected target movement velocity (IDx_X_ in a coordinate systemVelocity, IDx_Y_Velocity)：
Target is located at X-direction velocity amplitude in coordinate system：
IDx_X_Velocity=(Vradial*sinθ)*sinα；Formula (5)
Target is located at Y-direction velocity amplitude in coordinate system：
IDx_Y_Velocity=(Vradial*sinθ)*cosα；Formula (6)
The target reflection sectional area for being exported by radar judges the length (Obj_ of targetLength) and width (Obj_Width)
If vehicle Q presence is detected in virtual coil, and there is IDQ_X_CoordinateAnd Obj_Width, then by IDQ_
X_CoordinateWith Y (x-1)+Obj_Width/ 2 and Yx+Obj_Width/ 2 are compared, if YY(x-1)+Obj_Width/ 2 ＜ IDQ_
X_Coordinate＜ Yx+Obj_Width/ 2, then judge vehicle in X track；Then carry out next step and judge vehicle whether line ball, if
YY(x-1)+Obj_Width/ 2 ＜ IDQ_X_Coordinate＜ YY(x-1)+Obj_Width, then it is judged to that line ball is travelled；If not, then than
Compared with Yx-Obj_Width＜ IDQ_X_Coordinate＜ Yx+Obj_Width/ 2, then it is judged to that line ball is travelled；Do not become with upper inequality etc.
Vertical, then no line ball is travelled, and directly exports track number；
The actual travel direction ratio of the travel direction that microwave radar sensor is set according to host computer configuration module and vehicle
Relatively, when detection car speed is for bearing, illustrate with road direction conversely, being judged to reverse driving；Detection car speed is timing, says
Bright consistent with road direction, it is normally travel.
After technique scheme, the method and apparatus that the present invention is tested the speed with bayonet socket triggering based on the multilane of microwave,
Be the microwave radar sensor for being tested the speed using multilane as vehicle detection unit, export video of the trigger message to high definition by track
Sensor carries out evidence obtaining of taking pictures.The apparatus and method ensure that a microwave radar sensor can cover multiple tracks, and
Each track has video sensor to cover, and microwave radar sensor detects target vehicle to virtual coil in the detection zone
Triggering complete vehicle positioning in the picture；Used cooperatively with video by radar, complicated video analysis detection is substituted, complete
Certainly vehicle is captured and dynamic tracking complete solution, and video only need to carry out Car license recognition in designated area.Microwave radar sensor
When detecting the vehicle on arbitrary track and travelling to trigger position, can all trigger video sensor and be captured, while providing car
Track number and velocity amplitude, line algorithm of going forward side by side processes and other illegal information is judged, is that hypervelocity etc. is illegal there is provided can
The evidence for leaning on, the drawbacks of change a conventional track using a radar, compared to conventional narrow ripple radar and video camera one by one
Corresponding velocity-measuring system, can greatly save radar equipment and corresponding debugging and staking-out work, possess obvious cost performance excellent
Gesture, with more preferable economy and maintainability, economic benefit is suitable to application than high.
Description of the drawings
Fig. 1 is detections of radar regional effect figure；
Fig. 2 is the schematic block diagram that the present invention is tested the speed with the device of bayonet socket triggering based on the multilane of microwave；
Fig. 3 is the schematic block diagram that the present invention is tested the speed with the method for bayonet socket triggering based on the multilane of microwave；
Fig. 4 is the schematic diagram of microwave radar sensor and video sensor configuration；
Fig. 5 is the schematic diagram of lane detection and compacting line detection；
Fig. 6 is that target place track judges and whether is compacted the schematic diagram of line judgement；
Fig. 7 is the schematic diagram of target velocity detection and detection of whether driving in the wrong direction.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention is clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.Following examples are only used for more clear
Chu's ground explanation technical scheme, and can not be limited the scope of the invention with this.
The device that a kind of multilane based on microwave is tested the speed with bayonet socket triggering, as shown in figure 1, the device includes power module
1st, host computer configuration module 2, microwave radar sensor 3, signal processing module 4, video configuration module 5, video sensor 6 and aobvious
Show memory module 7；
Power module 1 and host computer configuration module 2, microwave radar sensor 3, signal processing module 4, video configuration module
5th, video sensor 6 and display memory module 7 are electrically connected with and are powered for these equipment, and output voltage is 12V；
Host computer configuration module 2 realizes the communication with microwave radar sensor 3 and transmission using network interface, and host computer is joined
The configuration that module 2 is responsible for carrying out microwave radar sensor 3 relevant parameter is put, in actual applications by the width in track on road surface
With information configuration such as number of track-lines, virtual coils to microwave radar sensor 3, the needs of user setup show with measurement data is all
Completed by the host computer configuration module 2；
Microwave radar sensor 3 according to the relative velocity v between target vehicle and sensor, according to doppler principle, instead
Ejected wave can occur frequency displacement for fdMicrowave signal, relative velocity and the relative distance of target vehicle, root is obtained according to formula
According to lane information and the virtual coil trigger position of host computer configuration module 2, the process of complete paired data, useful by configured
Information is transferred out by signal processing module 4.
Signal processing module 4 is communicated to connect with microwave radar sensor 3, and signal processing module 4 is microwave radar sensor 3
The data of output carry out pretreatment, and signal processing module 4 includes block isolating circuit, voltage comparator, gain-programmed amplifier；Every straight
Circuit is the AC compounent for obtaining signal, as the intermediate frequency that microwave radar sensor 3 is exported amplifies the audion that signal contains+2V
Quiescent DC operation point, if not isolated, signal can be ended in subsequent treatment, affect entering further for work
OK.Voltage comparator adopts voltage comparable chip LM393AP, and the intermediate-freuqncy signal after straight buffering is converted into the 3.3V's of standard
Transistor-Transistor Logic level signal, by increasing the job simplification software processes of hardware.Gain-programmed amplifier is by analog multiplexer and fortune
Amplifier composition is calculated, changes the amplification of gain-programmed amplifier according to the data of leading portion AD conversion collection, so that letter
Number amplitude be maintained between 2-3V as far as possible, realize the unification of gamut, further improve signal sampling precision.
Video configuration module 5 realizes the communication with video sensor 6 and transmission, video configuration module 5 using network interface
The configuration of relevant parameter is carried out to video sensor 6, video sensor 6 is communicated to connect with signal processing module 4, video sensor
6 relevant positions for being mountable to multiple tracks, video sensor 6 receives the instruction that signal processing module 4 is sended over, and triggering is grabbed
Clap the target in one's name track number；
Video sensor 6 is communicated to connect with display memory module 7, the touching according to microwave radar sensor 3 of video sensor 6
Time and speed and corresponding track number is sent out, is matched with video encoder server vehicle license plate position and car speed, production
Record is captured, and memory module 7 is being shown by the network storage.
Below to based on microwave multilane test and bayonet socket triggering method illustrate, the method be based on above-mentioned dress
Put and implemented, a kind of multilane based on microwave tests the speed and the method for bayonet socket triggering includes flow process as shown in Figure 3, such as
Under：
The first step：Module is configured, and sets trigger position；In bayonet socket application section, first with host computer configuration module 2 and video
Configuration module 5 is configured to microwave radar sensor 3 and video sensor 6 respectively according to lane information, in trigger
Virtual coil position is set on position, and configuration schematic diagram is shown in Fig. 4；
Second step：Microwave radar sensor 3 is scanned to detection zone；Microwave radar sensor 3 is at virtual coil
Target vehicle process is detected, by triggering of the moving vehicle to virtual coil, target vehicle detection in the picture has been completed,
So as to position in the picture when showing that vehicle triggers virtual coil, moving vehicle is completed in figure by virtual coil trigger mechanism
As in detection and positioning, finally by calculating the exact position of the geometric center as vehicle in the picture of target vehicle；
3rd step：Radar is detected to target information, and carries out infringement judgement；In the third step comprising lane detection and
Compacting line is detected, target place track judges and whether is compacted whether line judgement, target velocity detection and target are driven in the wrong direction and detected, is seen
Fig. 5-7；
If Fig. 5 is to put centered on microwave radar sensor 3 to set up coordinate system schematic diagram, virtual coil is from the longitudinal direction of radar
Distance is L, a length of M in track；
The range formula of target is：
The speed formula of target is：
It is Y direction parallel to track horizontal direction, positive direction is 3 beam transmission direction of microwave radar sensor；
It is X-direction perpendicular to track horizontal direction, positive direction is 3 beam transmission direction of microwave radar sensor；
Target is α with the horizontal deflection angle of microwave remote sensor radar, and vertical luffing angle is θ；
Detected target is with respect to the radial velocity of sensor：Vradial；
The radial distance of detected target range microwave radar sensor 3：Dradial；
Then target is located at X-direction coordinate figure in coordinate system：
IDx_X_Coordinate=(Dradial*sinθ)*sinα；Formula (3)
Target is located at Y-direction coordinate figure in coordinate system：
IDx_Y_Coordinate=(Dradial*sinθ)*cosα；Formula (4)
Detected target movement velocity (IDx_X_ in a coordinate systemVelocity, IDx_Y_Velocity)：
Target is located at X-direction velocity amplitude in coordinate system：
IDx_X_Velocity=(Vradial*sinθ)*sinα；Formula (5)
Target is located at Y-direction velocity amplitude in coordinate system：
IDx_Y_Velocity=(Vradial*sinθ)*cosα；Formula (6)
The target reflection sectional area for being exported by radar judges the length (Obj_ of targetLength) and width (Obj_Width)
If vehicle Q presence is detected in virtual coil, and there is IDQ_X_CoordinateAnd Obj_Width, then by IDQ_
X_CoordinateWith Y (x-1)+Obj_Width/ 2 and Yx+Obj_Width/ 2 are compared, if YY(x-1)+Obj_Width/ 2 ＜ IDQ_
X_Coordinate＜ Yx+Obj_Width/ 2, then judge vehicle in X track；Then carry out next step and judge vehicle whether line ball, if
YY(x-1)+Obj_Width/ 2 ＜ IDQ_X_Coordinate＜ YY(x-1)+Obj_Width, then it is judged to that line ball is travelled；If not, then than
Compared with Yx-Obj_Width＜ IDQ_X_Coordinate＜ Yx+Obj_Width/ 2, then it is judged to that line ball is travelled；Do not become with upper inequality etc.
Vertical, then no line ball is travelled, and directly exports track number.
The actual travel direction of the travel direction that microwave radar sensor 3 is set according to host computer configuration module 2 and vehicle
Relatively, when detection car speed is for bearing, illustrate with road direction conversely, being judged to reverse driving；Detection car speed is timing,
Illustrate consistent with road direction, be normally travel；
4th step：Video sensor 6 is captured；Microwave radar sensor 3 is communicated with video sensor 6 by network, when micro-
Ripple radar sensor 3 detects detection section to be had vehicle to reach and obtains the result data that tests the speed, immediately by measurement data and illegal
Information is sent to the video sensor 6 on multiple tracks in real time, and video sensor 6 is triggered according to the lane information of each self-configuring
Capture the target in one's name track number；
5th step：Video sensor 6 is identified car plate and big carriage type information；6 pairs of figures for being photographed of video sensor
Piece information is processed, and the technology such as is contrasted according to gray value, data base and is measured license plate number and target vehicle type, and is added to and is grabbed
Clap in image；
6th step：Produce the pictorial information of all vehicles；Radar information and pictorial information are integrated, and all information are entered
Row object matching, synthesizes in pictures；The video sensor 6 of candid photograph is known automatically and vehicle license plate number and type of vehicle, and
One or more illegal vehicle image is intercepted, through image real time transfer, corresponding information such as section, target vehicle speed, hypervelocity
Percentage ratio, if drive in the wrong direction, if compacting line etc. is synthesized in picture, generates file bag, so that client inquires about and as to disobeying
The foundation of method punishment；
7th step：Platform is stored, and infringement is collected evidence；The file bag of production is reached aobvious by video sensor 6 by network
Show memory module 7, all of vehicle pictures are placed in a file bag and are preserved, have the information of vehicles of illegal information in another module
Middle storage, facilitates relevant department to investigate and prosecute the vehicle.
Video sensor 6 can be video camera, multiple video camera cooperation in Fig. 4, Fig. 5.
The method and apparatus that the present invention is tested the speed with bayonet socket triggering based on the multilane of microwave, is the microwave for being tested the speed with multilane
Radar sensor 3 is used as vehicle detection unit, and exporting trigger message by track is carried out taking pictures taking to the video sensor 6 of high definition
Card.The apparatus and method ensure that a microwave radar sensor 3 can cover multiple tracks, and there is video in each track
Sensor 6 is covered, and microwave radar sensor 3 detects target vehicle and completes vehicle to the triggering of virtual coil in the detection zone
Positioning in the picture；Used cooperatively with video by radar, complicated video analysis detection is substituted, is fully solved vehicle capture
And dynamic tracking, video only need to carry out Car license recognition in designated area.Microwave radar sensor 3 detects arbitrary track
On vehicle when travelling to trigger position, can all trigger video sensor 6 and be captured, while providing track number and the speed of vehicle
Angle value, line algorithm of going forward side by side processes and other illegal information is judged, is that hypervelocity etc. is illegal there is provided reliable evidence, changes
A drawbacks of conventional track is using a radar, economic benefit is suitable to application than high.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, the present invention are not limited to,
Although being described in detail to the present invention with reference to the foregoing embodiments, for a person skilled in the art, which still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic.
All any modification, equivalent substitution and improvement that within the spirit and principles in the present invention, is made etc., should be included in the present invention's
Within protection domain.
Claims (4)
1. a kind of multilane based on microwave test the speed with bayonet socket triggering device, it is characterised in that：Described device includes power supply mould
Block, host computer configuration module, microwave radar sensor, signal processing module, video configuration module, video sensor and display are deposited
Storage module；
The power module respectively with the host computer configuration module, the microwave radar sensor, the signal processing module,
The video configuration module, the video sensor and the display memory module are electrically connected with and provide corresponding power supply；
The host computer configuration module realizes communication and the transmission with the microwave radar sensor, the letter using network interface
Number processing module is communicated to connect with the microwave radar sensor, and the signal processing module is defeated for the microwave radar sensor
The data for going out carry out pretreatment, and the video configuration module realizes communication and the biography with the video sensor using network interface
Defeated, the video sensor is communicated to connect with the signal processing module, the video sensor and the display memory module
Communication connection.
2. the multilane based on microwave according to claim 1 test the speed with bayonet socket triggering device, it is characterised in that：Described
Signal processing module includes block isolating circuit, voltage comparator, gain-programmed amplifier.
3. a kind of multilane based on microwave test the speed with bayonet socket triggering method, it is characterised in that comprise the steps of：
The first step：Module is configured, and sets trigger position；In bayonet socket application section, first with host computer configuration module and video configuration
Module is configured to microwave radar sensor and video sensor respectively according to lane information, is set on the position of trigger
Put virtual coil position；
Second step：Microwave radar sensor is scanned to detection zone；Microwave radar sensor is detected at virtual coil
There is target vehicle to pass through, by triggering of the moving vehicle to virtual coil, target vehicle detection in the picture is completed, so as to
Position in the picture when going out vehicle triggering virtual coil, completes moving vehicle in the picture by virtual coil trigger mechanism
Detection and positioning, finally by calculating the exact position of the geometric center as vehicle in the picture of target vehicle；
3rd step：Radar is detected to target information, and carries out infringement judgement；Carry out lane detection and compacting line detection, enter
Row target place track judges and whether is compacted line to judge, carry out target velocity detection and the whether retrograde detection of target；
4th step：Video sensor is captured；Microwave radar sensor is communicated with video sensor by network, when microwave radar is passed
Sensor detects detection section to be had vehicle to reach and obtains the result data that tests the speed, and sends out measurement data and illegal information in real time immediately
The video sensor being sent on multiple tracks, video sensor is captured to one's name according to the lane information of each self-configuring, triggering
The target in track number；
5th step：Video sensor is identified car plate and big carriage type information；Video sensor is to the pictorial information that photographed
Processed, license plate number and target vehicle type, and the candid photograph image that is added to are measured according to technology such as gray value, data base's contrasts
In；
6th step：Produce the pictorial information of all vehicles；Radar information and pictorial information are integrated, and all information are carried out mesh
Mark coupling, synthesizes in pictures；The video sensor of candid photograph is known automatically and vehicle license plate number and type of vehicle, and intercepts one
Open or multiple illegal vehicle images, through image real time transfer, corresponding information such as section, target vehicle speed, exceed the speed limit percentage ratio,
Whether drive in the wrong direction, if compacting line etc. is synthesized in picture, generates file bag, so that client inquires about and as to illegal punishment
Foundation；
7th step：Platform is stored, and infringement is collected evidence；The file bag of production is reached display storage by network by video sensor
Module, all of vehicle pictures is placed in a file bag and is preserved, and the information of vehicles for having illegal information is stored in another module,
Relevant department is facilitated to investigate and prosecute the vehicle.
4. a kind of multilane based on microwave according to claim 3 test the speed with bayonet socket triggering method, it is characterised in that
In the 3rd step, in the following manner carrying out lane detection and compacting line detection, target place track judge and whether
Compacting line judges, whether target velocity detection and target are driven in the wrong direction and detected：
Centered on microwave radar sensor, point sets up coordinate system schematic diagram, and virtual coil is L from the fore-and-aft distance of radar, track
A length of M；
The range formula of target is：
The speed formula of target is：
It is Y direction parallel to track horizontal direction, positive direction is the microwave radar sensor beam direction of the launch；
It is X-direction perpendicular to track horizontal direction, positive direction is the microwave radar sensor beam direction of the launch；
Target is α with the horizontal deflection angle of microwave remote sensor radar, and vertical luffing angle is θ；
Detected target is with respect to the radial velocity of sensor：Vradial；
The radial distance of detected target range microwave radar sensor：Dradial；
Then target is located at X-direction coordinate figure in coordinate system：
IDx_X_Coordinate=(Dradial*sinθ)*sinα；Formula (3)
Target is located at Y-direction coordinate figure in coordinate system：
IDx_Y_Coordinate=(Dradial*sinθ)*cosα；Formula (4)
Detected target movement velocity (IDx_X_ in a coordinate systemVelocity, IDx_Y_Velocity)：
Target is located at X-direction velocity amplitude in coordinate system：
IDx_X_Velocity=(Vradial*sinθ)*sinα；Formula (5)
Target is located at Y-direction velocity amplitude in coordinate system：
IDx_Y_Velocity=(Vradial*sinθ)*cosα；Formula (6)
The target reflection sectional area for being exported by radar judges the length (Obj_ of targetLength) and width (Obj_Width)
If vehicle Q presence is detected in virtual coil, and there is IDQ_X_CoordinateAnd Obj_Width, then by IDQ_X_CoordinateWith
Y(x-1)+Obj_Width/ 2 and Yx+Obj_Width/ 2 are compared, if YY(x-1)+Obj_Width/ 2 ＜ IDQ_X_Coordinate＜ Yx+
Obj_Width/ 2, then judge vehicle in X track；Then carry out next step and judge vehicle whether line ball, if YY(x-1)+Obj_Width/2
＜ IDa_X_Coordinate＜ YY(x-1)+Obj_Width, then it is judged to that line ball is travelled；If not, then compare Yx-Obj_Width＜
IDQ_X_Coordinate＜ Yx+Obj_Width/ 2, then it is judged to that line ball is travelled；It is false with upper inequality etc., then no line ball is travelled,
Track number is directly exported；
The actual travel direction ratio of the travel direction that microwave radar sensor is set according to host computer configuration module and vehicle relatively, inspection
When surveying car speed for bearing, illustrate with road direction conversely, being judged to reverse driving；Detection car speed be timing, illustrate and
Road direction is consistent, is normally travel.
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