CN108648467A - A kind of Emergency Vehicle Lane intelligent candid equipment integrating and method based on Radar Technology - Google Patents
A kind of Emergency Vehicle Lane intelligent candid equipment integrating and method based on Radar Technology Download PDFInfo
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- CN108648467A CN108648467A CN201810443301.XA CN201810443301A CN108648467A CN 108648467 A CN108648467 A CN 108648467A CN 201810443301 A CN201810443301 A CN 201810443301A CN 108648467 A CN108648467 A CN 108648467A
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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
- G08G1/048—Detecting movement of traffic to be counted or controlled with provision for compensation of environmental or other condition, e.g. snow, vehicle stopped at detector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
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Abstract
The invention discloses a kind of Emergency Vehicle Lane intelligent candid equipment integrating and method based on Radar Technology, including radar velocity measurement module, module and computer processing module are captured, it captures module and is both connected on computer processing module with radar velocity measurement module；Radar velocity measurement module includes microwave radar module, microwave radar module received signal, which is sent in signal processing module, to be handled, the output signal end of signal processing module is provided with analog-to-digital conversion module, and the digital signal of analog-to-digital conversion module output is sent in FPGA control modules；It includes panorama camera and feature camera to capture module, panorama camera and the output end of feature camera gathered data are both connected in video distribution module, the present invention not only gets up radar system and capturing system organic unity, the over-speed vehicles of detections of radar are given with the order of candid photograph, the pattern for ensureing that over-speed vehicles have more superior identification, and improving candid photograph improves the clarity for the screen captured.
Description
Technical field
The present invention relates to radar velocity measurements to capture technical field, and specially a kind of Emergency Vehicle Lane based on Radar Technology is intelligently grabbed
Clap equipment integrating and method.
Background technology
With the steady growth of national economy, the national basis Facilities Construction such as China's highway is perfect constantly, machine
The modern means of communication such as motor-car are widely spread, and vehicle supervision department carries while reinforcing traffic route management and science and technology strengthening police
Intelligentized traffic superintendance system is gone out, the concepts such as electronic police, velocity radar are familiar with by everybody gradually.Miscellaneous electricity
Sub- police, which exceeds the speed limit to collect evidence, captures both sides or center isolation strip that equipment appears in highway, city overhead road and expressway,
The cruiser for being equipped with electronic police speed measuring equipment also constantly gushes out each corner in present city.But most hypervelocities domestic at present
The velocity measuring accuracy rate that equipment is captured in evidence obtaining is not high, and the photo picture that equipment takes is fuzzy, can be used for enforcement evidence
It is efficient too low, fair, the just principle of law enforcement is affected, cannot play and the driving vehicle that exeeds the regulation speed strictly be administered and right
The watchful effect of traffic violation person enables numerous drivers consciously to observe traffic laws rule, reduces so that prevent hypervelocity behavior,
It is finally reached reduction traffic accident, increases the purpose of traffic safety.Due to the control process device hardware design of velocity radar
With the limitation of software algorithm, the electronic police equipment being fixedly mounted on road is mostly both for the detection for carrying out vehicle target, to vehicle
The car plate of headstock position captured, when night use flash lamp, moment forceful rays can carry out vehicle to head-on sailing
Driver Vision affects, and induces traffic accident, influences traffic safety, the effect run counter to desire occur.Some peaces
Equipment on cruiser can shoot the vehicle that exeeds the regulation speed from tailstock direction, but that is to receive overspeed signal
Afterwards, several photos are continuously captured manually to front, then therefrom choose the photo that can pick out the tailstock position number-plate number again
Collect evidence for enforcing the law, this equipment can not be automatically performed the candid photograph function of vehicles peccancy, in the case of dark with sudden strain of a muscle
The cooperation of light lamp is also undesirable, and collected picture is difficult to use in law enforcement evidence obtaining.
For example, application No. is 201610585247.3, a kind of entitled patent of invention of radar velocity measurement control system.
Acquisition, processing and the data exchange of radar data are completed in the invention using digital signal processor as radar controller,
Control system resolution and arithmetic speed are improved, the reliability of complete machine is effectively improved, reduces the interference of noise, improve the letter of system
It makes an uproar ratio；Control system is small, low in energy consumption, and cost-effective and functional reliability is high；With hypervelocity target detection high efficiency, speed
It spends accuracy of detection is high, captures picture number-plate number discrimination height, night and coordinates flash lamp using effect desired benefits.
But existing Emergency Vehicle Lane capturing system still has following defect：
(1) existing Emergency Vehicle Lane capturing system directly shows roughly that the shape of vehicle and speed are believed using radar velocity measurement
Breath, clearly can not be captured and be retained video file to the vehicle of hypervelocity, lead in many Emergency Vehicle Lanes that over-speed vehicles can not
Identification, loses just and sound.
(2) existing anxious track capturing system utilizes camera to capture pattern merely, and this mode wastes a large amount of memories, and
Useful ratio data occupancy volume is small, and moreover, existing video capture system is big by weather and video itself noise effect, essence
Degree cannot be satisfied the demand of people.
Invention content
In order to overcome the shortcomings of prior art, the present invention provides a kind of Emergency Vehicle Lane based on Radar Technology and intelligently grabs
Equipment integrating and method are clapped, can effectively solve the problem that the problem of background technology proposes.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of Emergency Vehicle Lane intelligent candid equipment integrating and method based on Radar Technology, including radar velocity measurement module, grab
Module and computer processing module are clapped, the candid photograph module is both connected to the computer disposal mould with the radar velocity measurement module
On block；
The radar velocity measurement module includes microwave radar module, and the microwave radar module received signal is sent to signal
It is handled in processing module, the output signal end of the signal processing module is provided with analog-to-digital conversion module, and the modulus turns
The digital signal of mold changing block output is sent in FPGA control modules；
The candid photograph module includes panorama camera and feature camera, and the panorama camera acquires number with the feature camera
According to output end be both connected in video distribution module, the output end of the video distribution module be connected with video detection module with
Video capture module, the video detection module and the output data of the video capture module are stored in wireless network A's
In high in the clouds, the sub- grade of the wireless network A is connected with wireless network B；
Video detection and the identification module for capturing module includes to receive the signal of the panorama camera information in advance to locate
Module and virtual coil generator are managed, the signal pre-processing module is carried to transmitting a signal to characteristic signal after Signal Pretreatment
In modulus block, the feature signal extraction module is sent to after signal is carried out feature extraction in data processing memory module, is passed through
It crosses the data processing memory module treated in data transmission to control signal output module, the control signal output mould
Block is sent to after being recognized to incoming signal in vehicle registration module, after the vehicle registration module records information
It transfers data in exchange control centre module, the output signal reaction of exchange control centre module is in the control
In signal output module, the output signal of the virtual coil generator acts on the feature signal extraction module and mobile mesh
It marks on tracking module, the output end of the movable object tracking module is connected in the data processing memory module, the control
Feedback is in the virtual coil generator after the data processing that signal output module processed provides exchange control centre module
On.
Further, the microwave radar module includes velocity radar sensor, input antenna and output antenna.
Further, the signal communicated between the microwave radar module and the signal processing module is mixed frequency signal.
Further, the computer processing module includes memory hardware and processor, and the memory hardware includes hard disk
With display screen.
Further, multiplexer, the wireless network are provided between the wireless network A and the wireless network B
Dedicated network centered on network B.
Further, the Amplifier Model selection in the signal processing module circuit is OPA2735.
Further, FLASH modules, key-press module and serial port module are connected in the FPGA control modules.
In addition the present invention designs a kind of operating method of the Emergency Vehicle Lane intelligent candid equipment integrating based on Radar Technology, packet
Include following steps：
S100, it first determines whether to select wave band and antenna, it is known that the common working frequency range of radar meter is divided into X, K and Ka
Three wave bands, working frequency are respectively 10.5GHz, 24.125GHz and 35.1GHz, due to X sections of beam main lobe width compared with
Width, Ka wave range Doppler frequency displacements are too big, therefore select K-band Doppler radar as system tachogenerator；For choose bandwidth,
Simple in structure, power capacity is big and antenna easy to use, chooses electromagnetic horn as the radar antenna to test the speed, the antenna category
In a kind of microwave antenna；
After S200, wave band and Antenna selection, need to carry out correspondingly software control to FPGA control modules；It sets first
It sets and starts AD samplings when commencing signal is 1 and then judge that whether frame data are full in FIFOK, read if having expired
Data fifo is gone forward side by side line frequency spectrum analysis, is rejudged if not returning again to previous step completely, is finally stored in the data of analysis
It in FLASH and shows, if commencing signal can not continue to execute for 1；
After S300, radar velocity measurement module are set, module is captured in next setting；Acquisition parameters are set first, are selected
The placement location of panorama camera is taken, avoids the place at dead angle as possible, has been once again set up the mode of video distribution, writes software control
It makes the information of over-speed vehicles to come for radar feedback and carries out video capture operation, ensure in the case of video detection for super
Fast vehicle real-time grasp shoot avoids the occurrence of and shoots unclear situation generation to the vehicle that Emergency Vehicle Lane exceeds the speed limit；
S400, in order to avoid the influence of bad weather and noise, need the signal acquired to camera to pre-process, in advance
Processing provides HS and VS signals, reduces video noise, and automatic gain, which removes weather, to be influenced, and pretreatment is eliminated using frame subtraction technique
The influence of static shade and background, while providing neighborhood difference processing, eliminate dynamic shadow；
After S500, each hardware module and data processing module are set, power supply is begun to turn on, data resource finally accesses meter
Storage and display in calculation machine, display content include the shooting video and speed data by Emergency Vehicle Lane vehicle.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) present invention is got up by radar system and capturing system organic unity, and the over-speed vehicles of detections of radar are given
The order of candid photograph is given, ensures that over-speed vehicles have more superior identification, existing Emergency Vehicle Lane capturing system is solved and utilizes
Radar velocity measurement directly shows roughly the shape and velocity information of vehicle, can not the vehicle of hypervelocity clearly be captured and be retained
Video file leads to the problem of over-speed vehicles can not recognize in many Emergency Vehicle Lanes.
(2) present invention has mesh by the function of carrying out pretreatment for capturing system and effectively differentiate over-speed vehicles information
Selection over-speed vehicles the problem of being captured, greatly improving the storage of valid data, reduce unnecessary data occupied space,
And substantially increase the clarity of shooting.
Description of the drawings
Fig. 1 is integral module schematic diagram of the present invention；
Fig. 2 is the module diagram of the candid photograph module of the present invention；
Fig. 3 is the video detection and identification module schematic diagram of the candid photograph module of the present invention；
Fig. 4 is the circuit diagram of the signal processing module of the present invention.
Figure label：
1- radar velocity measurement modules；2- captures module；3- computer processing modules；
101- microwave radar modules；102- signal processing modules；103- analog-to-digital conversion modules；104-FPGA control modules；
105-FLASH modules；106- key-press modules；107- serial port modules；
201- panorama cameras；202- feature cameras；203- video distribution modules；204- video detection modules；205- videos
Capture module；206- wireless networks A；207- wireless networks B；208- signal pre-processing modules；209- feature signal extraction modules；
210- data processing memory modules；211- controls signal output module；212- vehicle registration modules；213- exchanges control centre's mould
Block；214- movable object tracking modules；215- virtual coil generators；
301- memory hardware；302- hard disks；303- display screens；304- processors.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment
As shown in Figure 1, the present invention provides a kind of, the Emergency Vehicle Lane intelligent candid equipment integrating based on Radar Technology includes
Radar velocity measurement module 1 captures module 2 and computer processing module 3, and the candid photograph module 2 connects with the radar velocity measurement module 1
It is connected on the computer processing module 3；
The effect of the modules of the present invention is that radar velocity measurement module 1 is mainly measured using Radar Technology and analyzes vehicle
Hypervelocity information and hypervelocity presentation of information is come out, capture over-speed vehicles that module 2 is provided mainly for radar velocity measurement module 1 into
Row is captured, and radar velocity measurement module 1 and the information for capturing the acquisition of module 2 are displayed and stored on computer processing module 3.
As shown in Figure 1, the radar velocity measurement module 1 includes microwave radar module 101, the microwave radar module 101 connects
The signal of receipts is sent in signal processing module 102 and is handled, and the output signal end of the signal processing module 102 is provided with
Analog-to-digital conversion module 103, the digital signal that the analog-to-digital conversion module 103 exports are sent in FPGA control modules 104；
As shown in Figure 1, heretofore described microwave radar module 101 include velocity radar sensor, input antenna with it is defeated
Go out antenna.
The output antenna emission detection wave of microwave radar module 101, is collected and is passed by input antenna after vehicle feedback
It is analyzed in inlet signal processing module 102, the output signal end of signal processing module 102 is provided with analog-to-digital conversion module 103
And the analog signal transmitted is acquired and is converted by analog-to-digital conversion module 103, is again inputted into FPGA control modules 104
It is operated using software and handles control signal, Computer display is passed to for vehicle velocity signal.
As shown in Figure 1, communicated between heretofore described microwave radar module 101 and the signal processing module 102
Signal is mixed frequency signal.
The signal communicated between microwave radar module 101 and the signal processing module 102 is mixed frequency signal, therefore must be incited somebody to action
Mixed frequency signal carries out intermediate frequency enhanced processing and is AD converted again.
As shown in Figure 1, heretofore described computer processing module 3 includes memory hardware 301 and processor 304, it is described
Memory hardware 301 includes hard disk 302 and display screen 303.
As shown in Figure 1, being connected with FLASH modules 105, key-press module 106 in heretofore described FPGA control modules 104
With serial port module 107.
There are two types of operation modes, i.e. pair of pages read-write mode for FLASH chip tool, can be carried out at the same time read-write to two pieces of plane
Operation.This operation mode significantly improves the storage speed of chip, efficiently reduces the pressure cached to FPGA.String
Mouth mold block 107 with computer communicating.Key-press module 106 can provide manual input operation and such as reset.
As shown in Fig. 2, the candid photograph module 2 includes panorama camera 201 and feature camera 202, the panorama camera 201
It is both connected in video distribution module 203 with the output end of 202 gathered data of feature camera, the video distribution module
203 output end is connected with video detection module 204 and video capture module 205, and the video detection module 204 is regarded with described
The output data that frequency captures module 205 is stored in the high in the clouds of wireless network A206, the sub- cascade of the wireless network A206
It is connected to wireless network B207.
As shown in Fig. 2, it is multiple to be provided with multichannel between heretofore described wireless network A206 and the wireless network B207
With device, dedicated network centered on the wireless network B207.
The incoming data of radar velocity measurement module 1 capture module 2 and receive rear panorama camera 201 to mobile vehicle progress
Shooting, the process of shooting are distributed by video distribution module 203, are distributed into video detection and two functions of video capture, do not surpass
The vehicle of speed is detected, and over-speed vehicles take the form of candid photograph, overall data to be transferred to dedicated center via overall network
Network is handled or is stored.
As shown in figure 3, the video detection for capturing module 2 includes to receive the panorama camera 201 with identification module
The signal pre-processing module 208 of information and virtual coil generator 215, the signal pre-processing module 208 is to Signal Pretreatment
After transmit a signal in feature signal extraction module 209, signal is carried out feature extraction by the feature signal extraction module 209
After be sent in data processing memory module 210, by treated the data transmission of the data processing memory module 210 to controlling
In signal output module 211 processed, the control signal output module 211 is sent to vehicle note after being recognized to incoming signal
It records in module 212, the vehicle registration module 212 transfers data to exchange control centre module after being recorded to information
In 213, the output signal reaction of exchange control centre module 213 is described in the control signal output module 211
The output signal of virtual coil generator 215 acts on the feature signal extraction module 209 and movable object tracking module 214
On, the output end of the movable object tracking module 214 is connected in the data processing memory module 210, the control letter
Feedback occurs in the virtual coil after the data processing that number output module 211 provides exchange control centre module 213
On device 215.
Entire video detection and the processing procedure of identification module are pre-processed firstly for gathered data, after pretreatment
Signal send to video features signal extraction unit video features signal extraction unit the threshold values for finding video features signal in real time,
Video features signal extraction is come out.The output of video features signal extraction unit is divided into two-way, gives data processor all the way,
Another way gives movable object tracking unit.
Virtual coil generator 215 receives the pretreated synchronizing signal of vision signal for virtual coil, virtual coil
Position size can be arranged by computer operation.
As shown in figure 4, the Amplifier Model selection in 102 circuit of heretofore described signal processing module is
OPA2735。
Its offset voltage only has 5 μ V, main to carry out intermediate frequency enhanced processing to signal using two-stage amplifying circuit.
Referring to Fig.1 shown in Fig. 2 Fig. 3 and Fig. 4, the present invention has also been devised a kind of Emergency Vehicle Lane based on Radar Technology and intelligently grabs
The operating method for clapping equipment integrating, includes the following steps：
S100, it first determines whether to select wave band and antenna, it is known that the common working frequency range of radar meter is divided into X, K and Ka
Three wave bands, working frequency are respectively 10.5GHz, 24.125GHz and 35.1GHz, due to X sections of beam main lobe width compared with
Width, Ka wave range Doppler frequency displacements are too big, therefore select K-band Doppler radar as system tachogenerator；For choose bandwidth,
Simple in structure, power capacity is big and antenna easy to use, chooses electromagnetic horn as the radar antenna to test the speed, the antenna category
In a kind of microwave antenna；
After S200, wave band and Antenna selection, need to carry out correspondingly software control to FPGA control modules；It sets first
It sets and starts AD samplings when commencing signal is 1 and then judge that whether frame data are full in FIFOK, read if having expired
Data fifo is gone forward side by side line frequency spectrum analysis, is rejudged if not returning again to previous step completely, is finally stored in the data of analysis
It in FLASH and shows, if commencing signal can not continue to execute for 1；
After S300, radar velocity measurement module are set, module is captured in next setting；Acquisition parameters are set first, are selected
The placement location of panorama camera is taken, avoids the place at dead angle as possible, has been once again set up the mode of video distribution, writes software control
It makes the information of over-speed vehicles to come for radar feedback and carries out video capture operation, ensure in the case of video detection for super
Fast vehicle real-time grasp shoot avoids the occurrence of and shoots unclear situation generation to the vehicle that Emergency Vehicle Lane exceeds the speed limit；
S400, in order to avoid the influence of bad weather and noise, need the signal acquired to camera to pre-process, in advance
Processing provides HS and VS signals, reduces video noise, and automatic gain, which removes weather, to be influenced, and pretreatment is eliminated using frame subtraction technique
The influence of static shade and background, while providing neighborhood difference processing, eliminate dynamic shadow；
After S500, each hardware module and data processing module are set, power supply is begun to turn on, data resource finally accesses meter
Storage and display in calculation machine, display content include the shooting video and speed data by Emergency Vehicle Lane vehicle.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (8)
1. a kind of Emergency Vehicle Lane intelligent candid equipment integrating based on Radar Technology, it is characterised in that：Including radar velocity measurement module
(1), module (2) and computer processing module (3) are captured, the candid photograph module (2) is all connected with the radar velocity measurement module (1)
On the computer processing module (3)；
The radar velocity measurement module (1) includes microwave radar module (101), microwave radar module (101) received signal
It is sent in signal processing module (102) and is handled, the output signal end of the signal processing module (102) is provided with modulus
The digital signal of conversion module (103), analog-to-digital conversion module (103) output is sent in FPGA control modules (104)；
The candid photograph module (2) includes panorama camera (201) and feature camera (202), the panorama camera (201) with it is described
The output end of feature camera (202) gathered data is both connected in video distribution module (203), the video distribution module
(203) output end is connected with video detection module (204) and video capture module (205), the video detection module (204)
It is stored in the high in the clouds of (206) wireless network A with the output data of the video capture module (205), the wireless network A
(206) sub- grade is connected with wireless network B (207)；
The video detection for capturing module (2) and identification module include the signal for receiving panorama camera (201) information
Preprocessing module (208) and virtual coil generator (215), the signal pre-processing module (208) after Signal Pretreatment to inciting somebody to action
In signal transmission to feature signal extraction module (209), signal is carried out feature extraction by the feature signal extraction module (209)
After be sent in data processing memory module (210), by the data processing memory module (210) treated data transmission
Into control signal output module (211), the control signal output module (211) is transmitted after being recognized to incoming signal
Into vehicle registration module (212), the vehicle registration module (212) transfers data to exchange control after being recorded to information
In center module (213) processed, the output signal reaction of exchange control centre's module (213) is exported in the control signal
In module (211), the output signal of the virtual coil generator (215) acts on the feature signal extraction module (209)
With in movable object tracking module (214), the output end of the movable object tracking module (214) is connected to the data processing
In memory module (210), number of the control signal output module (211) to exchange control centre's module (213) offer
According to feedback after processing on the virtual coil generator (215).
2. a kind of Emergency Vehicle Lane intelligent candid equipment integrating based on Radar Technology according to claim 1, feature exist
In：The microwave radar module (101) includes velocity radar sensor, input antenna and output antenna.
3. a kind of Emergency Vehicle Lane intelligent candid equipment integrating based on Radar Technology according to claim 1, feature exist
In：The signal communicated between the microwave radar module (101) and the signal processing module (102) is mixed frequency signal.
4. a kind of Emergency Vehicle Lane intelligent candid equipment integrating based on Radar Technology according to claim 1, feature exist
In：The computer processing module (3) includes memory hardware (301) and processor (304), and the memory hardware (301) includes
Hard disk (302) and display screen (303).
5. a kind of Emergency Vehicle Lane intelligent candid equipment integrating based on Radar Technology according to claim 1, feature exist
In：Multiplexer, the wireless network B are provided between the wireless network A (206) and the wireless network B (207)
(207) dedicated network centered on.
6. a kind of Emergency Vehicle Lane intelligent candid equipment integrating based on Radar Technology according to claim 1, feature exist
In：Amplifier Model selection in signal processing module (102) circuit is OPA2735.
7. a kind of Emergency Vehicle Lane intelligent candid equipment integrating based on Radar Technology according to claim 1, feature exist
In：FLASH modules (105), key-press module (106) and serial port module (107) are connected on the FPGA control modules (104).
8. a kind of operation side of Emergency Vehicle Lane intelligent candid equipment integrating based on Radar Technology according to claim 1
Method, which is characterized in that include the following steps：
S100, it first determines whether to select wave band and antenna, it is known that the common working frequency range of radar meter is divided into X, K and Ka tri-
Wave band, working frequency are respectively 10.5GHz, 24.125GHz and 35.1GHz, due to X sections of beam main lobe wider width,
Ka wave range Doppler frequency displacements are too big, therefore select K-band Doppler radar as system tachogenerator；To choose bandwidth, knot
Structure is simple, power capacity is big and antenna easy to use, chooses electromagnetic horn as the radar antenna to test the speed, which belongs to
A kind of microwave antenna；
After S200, wave band and Antenna selection, need to carry out correspondingly software control to FPGA control modules；Setting is worked as first
Start AD samplings when commencing signal is 1 and then judges that whether frame data are full in FIFOK, read FIFO numbers if having expired
It according to line frequency spectrum analysis of going forward side by side, rejudges if not returning again to previous step completely, is finally stored in the data of analysis in FLASH simultaneously
It has been shown that, if commencing signal can not continue to execute for 1；
After S300, radar velocity measurement module are set, module is captured in next setting；Acquisition parameters are set first, are chosen complete
The placement location of scape camera avoids the place at dead angle as possible, has been once again set up the mode of video distribution, writes software control pair
For the vehicle that exceeds the speed limit in the case of the information progress video capture operation for the over-speed vehicles that radar feedback comes, guarantee video detection
Real-time grasp shoot avoids the occurrence of and shoots unclear situation to the vehicle that Emergency Vehicle Lane exceeds the speed limit and occur；
S400, in order to avoid the influence of bad weather and noise, need the signal acquired to camera to pre-process, pre-process
HS and VS signals are provided, video noise is reduced, automatic gain, which removes weather, to be influenced, and pretreatment is eliminated static using frame subtraction technique
The influence of shade and background, while providing neighborhood difference processing, eliminate dynamic shadow；
After S500, each hardware module and data processing module are set, power supply is begun to turn on, data resource finally accesses computer
Middle storage and display, display content include the shooting video and speed data by Emergency Vehicle Lane vehicle.
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| CN201810443301.XA CN108648467B (en) | 2018-05-10 | 2018-05-10 | Radar technology-based intelligent emergency lane snapshot integrated equipment and method |
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| CN201810443301.XA CN108648467B (en) | 2018-05-10 | 2018-05-10 | Radar technology-based intelligent emergency lane snapshot integrated equipment and method |
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