CN101968927B - Detection system for acquiring traffic flow by using high-definition video and microwave detection selectively - Google Patents
Detection system for acquiring traffic flow by using high-definition video and microwave detection selectively Download PDFInfo
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Abstract
The invention discloses a system for detecting urban road traffic flow by using high-definition video and microwave detection selectively. The system comprises a terminal acquisition unit and a control unit, wherein the terminal acquisition unit comprises a high-definition video acquisition module and a microwave data acquisition module; and the control unit comprises an interruption threshold value storage module, a traffic flow value comparison module, and an interruption control module. In the normal state of the system, only high-definition video acquisition module is started, so that the control unit processes and judges video information sent by the high-definition video acquisition module to acquire traffic flow data; and when the traffic flow data is abnormal, the microwave data acquisition module is automatically started. The system overcomes the disadvantages of the use of a single detector, can acquire accurate real-time data information of traffic flow in a severe environment of extremely low visibility, and lays a solid foundation for controlling and managing urban traffic by using modern technology.
Description
Technical field
The present invention relates to intellectual traffic control field, be specifically related to a kind of detection system detecting the road automobile flow of the testing result acquisition traffic flow data of two kinds of different data acquisition modules based on HD video and microwave.
Background technology
Based on the technology that Computer Vision gathers transport information, become a kind of important detection technique and be subject to extensive attention both domestic and external, Chinese patent literature CN 2553460Y, CN1186750C and CN2720742Y disclose the above-mentioned transport information checkout equipment obtaining information based on video image.The principle that above-mentioned video detects is after traffic video detection sensor obtains traffic scene image by the video camera be positioned at above road, by image transmitting to control center, and utilize the processing unit of control center carry out automatic analysis to the image received and process scene image information further, thus obtain corresponding traffic flow data.
But in the above prior art, the video system used is ordinary video, the ubiquitous problem of video detecting sensor is wherein: the image that sensor is obtained by video camera by the impact of several factors, first, cameras capture to video in the outward appearance of vehicle depend on the angle of vehicle relative to video camera setting position; Mutually blocking the second, between vehicle; Three, illumination also can affect to the outward appearance of vehicle with the change of weather in time; Four, the impact that produces of the instantaneous variation of vehicle on position, direction, the vehicle such as come into view has different speed, in the video captured vehicle shape, size, color etc. in all can change; Five, the body color of vehicle is subject to the impact of perimeter lights light color and the interference of background.
Along with the development of technology, the development of HD video video camera and use largely solve the technical matters of an above-mentioned part, and the raising of computer picture video processing capabilities in addition, the development of network communication bandwidth and HD video video camera manufacturing cost reduction, current HD video detection technique has become the main flow direction of magnitude of traffic flow video detection technology development.Utilize HD video video camera can obtain video pictures more clearly, and multiple track can be monitored to obtain the information of whole traffic flow of section more accurately simultaneously.In prior art, periodical " Traffic transport system engineering and information " the 8th volume the 6th in 2008 is interim, is entitled as in " the Beijing Olympic Expressway Traffic comprehensive detection system based on HD video " to disclose to use HD video to the comprehensive detection of gateway, through street, telecommunication flow information collection and multi-service application.
At present, adopt HD video video camera to carry out video capture and obtain the information of the magnitude of traffic flow further by technical finesse, be widely used, especially be all use above-mentioned monitoring means in the domestic intelligent transportation system of China, but above-mentioned employing HD video video camera obtains traffic video and obtains the means of traffic relevant information data further, can due to mutually blocking between vehicle, or cause the vehicle color in the video pictures caught and shape to change in vehicle fast running process, and the problem of information of vehicles in the video pictures captured in the low-down environment of visibility, cannot be reacted, the video image information causing control center to obtain cannot react vehicle condition truly, information of vehicle flowrate, also just instant road information cannot be obtained.
In prior art, Chinese patent literature CN2929859Y discloses a kind of microwave traffic vehicle information detector, it comprises for launching chirped microwave signal circuit, receiving the microwave portions of signal circuit and the microwave antenna composition reflected, primarily of analog to digital conversion, for real-time FFT conversion process, calculate the DSP part of information of vehicles according to not signal characteristic parameter in the same time, and the digital circuit processing section that relevant data store and control interface partial circuit forms.This technology is achieved vehicle flowrate, the speed of a motor vehicle, car to the round-the-clock Real-Time Monitoring of occupation rate and vehicle by described microwave traffic detector.Above-mentioned microwave technology for information acquisition and catch by the impact of weather condition, light intensity and car speed, can obtain immediately and traffic information data accurately.But as the important information acquisition terminal of traffic intelligent control unit, shift position for some traffic hazard or suspected vehicles needs to carry out real-time video picture when calling, microwave traffic information system then cannot realize, and the means that single like this dependence microwave detects really cannot realize intelligent transportation.
But be also used for realizing not by above-mentioned two kinds of means the technology that intelligent transportation detects so far, and while realization accurately monitoring, ensure minimum testing cost, the application just achieves the problems referred to above by rational technological means setting.
Summary of the invention
Technical matters to be solved by this invention is all the problem that single use HD video or microwave detect that data realize the quantitative analysis of road same section multilane Vehicle flow, statistics and storage in prior art, but have the technical matters in such as aforementioned background art all respectively.The invention provides for this reason a kind of based on alternative use HD video and microwave to detect to obtain the magnitude of traffic flow urban road traffic flow amount detection systems.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
Can the urban road traffic flow amount detection systems that detects of choice for use HD video and microwave, be made up of terminal collecting unit and control module;
Described terminal collecting unit is made up of high definition video collecting module and microwave data acquisition module;
Described control module comprises data processing module, and described data processing module is connected with described high definition video collecting module, described microwave data acquisition module respectively;
Described control module also comprises the magnitude of traffic flow and detects data management module, and the described magnitude of traffic flow detects data management module and is connected with described data processing module;
Described control module also comprises outage threshold memory module, vehicle flowrate numerical value comparing module and interrupts control module, the data message of Two Variables is stored in described outage threshold memory module, one of them variable is time period variable, and another variable is the standard vehicle data on flows variable corresponding with described time period variable;
Described vehicle flowrate numerical value comparing module detects data management module with described outage threshold memory module and the described magnitude of traffic flow respectively and is connected, described vehicle flowrate numerical value comparing module receives the real-time traffic flow amount data that the described magnitude of traffic flow detects data management module transmission, and described vehicle flowrate numerical value comparing module is by calling comparison with the connection of described outage threshold memory module to the threshold value stored therein and standard vehicle data on flows;
Described interruption control module is connected with described vehicle flowrate numerical value comparing module, receive the comparison result that described numerical value comparing module sends, and send corresponding interrupt control instruction to the described high definition video collecting module be connected with described interruption control module respectively and microwave data acquisition module.
Described outage threshold memory module and the described magnitude of traffic flow detect data management module and are connected, receive the data message that the described magnitude of traffic flow detects data management module transmission, described data message comprises Two Variables, a variable is time period variable, and another variable is the vehicle flowrate data variable corresponding with described time period variable; The traffic flow data of described outage threshold memory module to certain historical time section is averaged the standard vehicle data on flows being set as that each time period is corresponding.
The connection detected in data management module, vehicle flowrate numerical value comparing module and described interruption control module four modules between every two adjacent blocks of described data processing module, the magnitude of traffic flow is that bidirectional transfer of information connects.
Described control module also comprises the traffic flow data memory module detecting data management module with the described magnitude of traffic flow and be connected.
Described control module also comprises the video display module with described high definition video collecting model calling, described high definition video collecting to video pictures be delivered to described video display module and show.
Described high definition video collecting module and described microwave data acquisition module are arranged on the same section of road.
The method that described traffic flow detection system detects the magnitude of traffic flow, it comprises the steps:
(1) open described traffic flow detection system, and connect described high definition video collecting module by described interruption control module;
(2) video pictures captured is sent to data processing module by described high definition video collecting module, described data processing module carries out analysis and calculation process to the video pictures transmitted by described high definition video collecting module received, and video information is converted into the real-time traffic flow amount data message of the current mensuration section of road;
(3) real-time traffic flow amount data message is after treatment sent in the described magnitude of traffic flow detection data management module of described control module by described data processing module, stores the above-mentioned data message obtained in real time; The described magnitude of traffic flow detects data management module and is sent in described vehicle flowrate numerical value comparing module by real-time traffic flow amount data message after treatment simultaneously, and described vehicle flowrate numerical value comparing module calls standard vehicle data on flows corresponding to time period in described outage threshold memory module corresponding to this time and real-time traffic flow amount data are compared;
If when the numerical value of above-mentioned real-time traffic flow amount data is greater than or equal to 90% of standard vehicle data on flows numerical value, described interruption control module does not carry out any instruction;
If when the numerical value of above-mentioned real-time traffic flow amount data is less than 90% of described standard vehicle data on flows numerical value, comparison result is sent to described interruption control module by described vehicle flowrate numerical value comparing module, described interruption control module sending controling instruction is to described microwave data acquisition module, control to connect the interruption be connected with described microwave data acquisition module, use microwave data acquisition module to detect vehicle flowrate, and will the vehicle flowrate data information transfer extremely described data processing module obtained be detected;
(4) when the real-time traffic flow amount data obtained after data processing when the video obtained by described high definition video collecting module return to 90% of the standard vehicle data on flows numerical value corresponding to time period be greater than or equal to corresponding to this time again, described interruption control module controls to disconnect the interruption be connected with described microwave data acquisition module, only adopts high definition video collecting module to gather data message.
In described step (1), described data processing module, to described data processing module, is opened by described interruption control module transfer instruction.
The described magnitude of traffic flow detects data management module by the traffic flow data unloading on the non-same day after storing in described traffic flow data memory module.
The video display module of described control module shows the HD video picture that described high definition video collecting module gathers, and the actual traffic situation Non-follow control according to described HD video picture reaction interrupts control module assigns instruction.
The invention has the advantages that:
Of the present invention can the urban road traffic flow amount detection systems that detects of choice for use HD video and microwave, high definition video collecting module and microwave data acquisition module is provided with at acquisition terminal, only use described high definition video collecting module under normal circumstances, and data message accurately can be obtained according to described video pictures by the process of described data processing module, when due to weather limited, such as dense fog or heavy rain weather, vehicle flowrate data can be made to occur the reduction differed from ordinary times, if generalized case is lower than 90% of identical period vehicle flowrate data, is considered as traffic current amount and occurs fluctuation, traffic flow detection system of the present invention is provided with standard vehicle data on flows corresponding in each time period, and set the threshold value that above-mentioned data are different time sections, by the comparison of described vehicle flowrate numerical value comparing module, when described real-time traffic flow amount data are less than 90% of corresponding time period threshold value, explanation may be because the problems affect of visibility has arrived the minimizing of vehicle flowrate data, control to open described microwave data acquisition module so control described interruption control module, when real-time traffic flow amount date restoring to be greater than or equal to corresponding time period threshold value 90% time, namely can again control to close described microwave data acquisition module by interrupting control module, achieve like this and also can obtain the instant data message of vehicle flowrate accurately under the bad weather circumstances such as rain, snow, wind, mist that visibility is very low, for adopt up to date technics means control and management urban transportation, in time relieve traffic congestion stream, avoid road traffic congestion and minimizing traffic hazard to lay a solid foundation.In addition, detection system in the present invention is also provided with video display module, described video display module is convenient to staff on the one hand and is monitored in real time traffic scene, be conducive to evidence obtaining when traffic hazard occurs, the high-definition image that described video display module can be shown on the other hand is as supplementary means, judge the work quality of described high definition video collecting module more intuitively, to determine whether to open described microwave data acquisition module.
Accompanying drawing explanation
In order to better technical solutions according to the invention are described, the present invention will be described in further detail technique scheme in conjunction with following accompanying drawing.
Fig. 1 is the structural drawing of urban road traffic flow amount detection systems of the present invention;
Fig. 2 is the structural drawing of the convertible embodiment of urban road traffic flow amount detection systems of the present invention.
Embodiment
Embodiment 1
Be as shown in Figure 1 of the present invention can the structural drawing of urban road traffic flow amount detection systems that detects of choice for use HD video and microwave, described traffic flow detection system comprises terminal collecting unit and control module as we can see from the figure, described control module can be arranged in Control Room, and described terminal collecting unit is made up of high definition video collecting module and microwave data acquisition module.Wherein, what described high definition video collecting module adopted is 5,000,000 pixel high-definition digital video camera and camera lens corresponding thereto, 2/3 type IT CCD, valid pixel number 2456 (H) x 2058 (V), Pixel Dimensions 3.45x3.45 μm, adopt progressive scan mode, frame frequency is 15fps, C lens mount, electronic shutter 1/15 ~ 1/10,000 (second), there is external trigger function, digital 8/10/12bit GigE Vision; In the present embodiment, described high definition video collecting module installation has 2 optical fiber interfaces, and for the transmission of video information, it can realize the vehicle HD video data of Real-time Collection by road section.Microwave data acquisition module in the present embodiment can use any commercially available microwave vehicle information detector, generally by launching chirped microwave signal circuit, receive and reflect that the circuit of signal and microwave antenna form; Microwave data acquisition module described in the present embodiment is connected with 2 standard RS485 interfaces, described microwave data acquisition module can carry out microwave detection to the vehicle in the track to be measured being greater than or equal to 8 simultaneously, certainly also can arrange thus the classification (such as detecting the initial time of data message and sense cycle) of the region quantity of change microwave detection, scope and detecting device output information by changing in described microwave data acquisition module.
Described control module comprises data processing module and the magnitude of traffic flow detects data management module, described data processing module is connected with described high definition video collecting module and described microwave data acquisition module respectively, and the described magnitude of traffic flow detects data management module and is connected with described data processing module.Select in the present embodiment to arrange the industrial computer main board that described data processing module is AMD LX700 433MHz CPU, have 1 gigabit network interface, 1 optical fiber interface, 1 plate carries RS485 interface.Wherein, described optical fiber interface is inner to described data processing module by the Optical Fiber Transmission after described connection by being connected the video pictures realizing high-definition camera to capture with the optical fiber interface of described high definition video collecting module; Described gigabit network interface, by being connected with the network interface that the described magnitude of traffic flow detects data management module, realizing magnitude of traffic flow testing result by Ethernet and is transmitted by the data of communication front-end equipment to centre management equipment; Described plate carries RS485 interface in order to the connection both realizing with microwave data acquisition module, the data of the magnitude of traffic flow collected by microwave data acquisition module are transferred to described data processing module, and transfer in described magnitude of traffic flow detection data management module through described data processing module.
The magnitude of traffic flow described in the present embodiment detects data management module and is made up of server and machine box for server, server adopts dual processors, and CPU frequency is greater than 3.6GHz, and buffer memory is greater than 2M, support EM64T, support RAID, DDR2 internal memory, internal memory is greater than 8G, the hard disk of its inside is no less than two pieces, every block hard-disk capacity is greater than 1TB, and has hot-plug redundant power supply, supports the several operation systems such as Linux Windows and supports telemanagement; Described machine box for server adopts two back plate design of full redundancy, network, SAN switch, administration module, power supply, fan are redundant configuration, power supply, fan are all supported hot plug and are built in cabinet, there is provided the light-path of server, processor, internal memory, power supply, fan, Switching Module, administration module, hard disk and all kinds of expansion card to diagnose, there is the multipart failure prediction analysis ability such as hard disk, processor, fan and internal memory; The described machine box for server of described magnitude of traffic flow detection data management module is provided with external-connected port, and described external-connected port can carry out data transmission by Ethernet.
Control module described in the present embodiment also comprises the vehicle flowrate numerical value comparing module detecting data management module with the magnitude of traffic flow and be connected, with described vehicle flowrate numeric ratio to the outage threshold memory module of model calling and interrupt control module, the traffic flow data of described outage threshold memory module to certain historical time section draws the standard vehicle data on flows that each time period is corresponding after averaging, set it to threshold value, described threshold value also can manually input.Described interruption control module is connected with described high definition video collecting module and microwave data acquisition module respectively, and described interruption control module controls the opening and closing of described high definition video collecting module and described microwave data acquisition module.
In the present embodiment, realize connecting by optical fiber interface between described interruption control module and described high definition video collecting module, connected by standard RS485 Interface realization between described interruption control module and described microwave data acquisition module; Described vehicle flowrate numerical value comparing module and the described magnitude of traffic flow detect data management module and carry out data transmission by Ethernet, and described vehicle flowrate numerical value comparing module is connected by standard RS485 Interface realization with described interruption control module with described outage threshold memory module, described vehicle flowrate numerical value comparing module.
The course of work of the urban road traffic flow amount detection systems described in the present embodiment is as follows:
(1) open described traffic flow detection system, and connect described high definition video collecting module by described interruption control module;
(2) described high definition video collecting module by its by HD video cameras capture to video pictures be sent to data processing module, described data processing module carries out analysis and calculation process to the video pictures transmitted by described high definition video collecting module received, and video information is converted into the real-time traffic flow amount data message of the current mensuration section of road;
(3) real-time traffic flow amount data message is after treatment sent in the described magnitude of traffic flow detection data management module of described control module by described data processing module, stores the above-mentioned data message obtained in real time; The described magnitude of traffic flow detects data management module and is sent in described vehicle flowrate numerical value comparing module by real-time traffic flow amount data message after treatment simultaneously, and described vehicle flowrate numerical value comparing module calls standard vehicle data on flows corresponding to time period in described outage threshold memory module corresponding to this time and real-time traffic flow amount data are compared;
If when the numerical value of above-mentioned real-time traffic flow amount data is greater than or equal to 90% of standard vehicle data on flows numerical value, described interruption control module does not carry out any instruction;
If when the numerical value of above-mentioned real-time traffic flow amount data is less than 90% of described standard vehicle data on flows numerical value, comparison result is sent to described interruption control module by described numerical value comparing module, described interruption control module sending controling instruction is to described microwave data acquisition module, control to connect the interruption be connected with described microwave data acquisition module, use microwave data acquisition module to detect vehicle flowrate, and will the vehicle flowrate data information transfer extremely described data processing module obtained be detected;
(4) when the real-time traffic flow amount data obtained after data processing when the video obtained by described high definition video collecting module return to 90% of the standard vehicle data on flows numerical value corresponding to time period be greater than or equal to corresponding to this time again, described interruption control module controls to disconnect the interruption be connected with described microwave data acquisition module, only adopts high definition video collecting module to gather data message.
Embodiment 2
Be as shown in Figure 2 of the present invention can the another embodiment of urban road traffic flow amount detection systems of choice for use HD video and microwave detector, the module of high definition video collecting described in the present embodiment and described microwave data acquisition module are arranged on the same section of road.Compared to embodiment 1, detection system described in the present embodiment adds traffic flow data memory module and video display module, described traffic flow data memory module and the described magnitude of traffic flow detect data management module and are connected, and the described magnitude of traffic flow detects data management module and the traffic flow data unloading on the non-same day after storage is carried out data backup in described traffic flow data memory module.Described traffic flow data memory module is made up of disk array storer, and disk array storer at least has 3TB useful capacity, and single-deck capacity is 300GB, and rotating speed is 10K/rpm, supports that logical volume divides, and supports online expansion or changes hard disk; Adopt two RAID controller, support RAID 0+1, RAID 0,1,3,5; 512MB high-speed cache, can expand to 2GB; Main frame has 4 optical-fibre channels (FC) and exchanges and FC arbitrated loop (FC-AL), detects data management module for connecting the magnitude of traffic flow.
Video display module described in the present embodiment is connected by optical fiber interface with described high definition video collecting module, by described high definition video collecting module acquires to video pictures be delivered to described video display module and show.
In addition, in the data processing module of this embodiment, also select increase to be provided with data interface, described data interface is USB and MiniIDE interface, carry DOM electronic hard disc and CF card can carry out memory system data.
Data processing module described in the present embodiment and the connection detected between data management module of the described magnitude of traffic flow are that bidirectional transfer of information connects, and described connected mode is be connected in the mode of Ethernet by network interface.Also arranging described outage threshold memory module, to detect data management module with the described magnitude of traffic flow be that bidirectional transfer of information is connected, and described connected mode is also for be connected in the mode of Ethernet by network interface.
Its course of work is:
(1) open described traffic flow detection system, and connect described high definition video collecting module by described interruption control module.
(2) described high definition video collecting module by its by HD video cameras capture to video pictures be sent to data processing module, also send to described video display module by optical fiber simultaneously, described data processing module carries out analysis and calculation process to the video pictures transmitted by described high definition video collecting module received, and video information is converted into the real-time traffic flow amount data message of the current mensuration section of road;
(3) real-time traffic flow amount data message is after treatment sent in the described magnitude of traffic flow detection data management module of described control module by described data processing module, stores the above-mentioned data message obtained in real time; The described magnitude of traffic flow detects data management module and is sent in described vehicle flowrate numerical value comparing module by real-time traffic flow amount data message after treatment simultaneously, in addition, the described magnitude of traffic flow detects data management module and is sent to described outage threshold memory module, as standard vehicle data on flows by the time period of proxima luce (prox. luc) and with the vehicle flowrate data corresponding to this time period;
Described vehicle flowrate numerical value comparing module calls standard vehicle data on flows corresponding to time period in described outage threshold memory module corresponding to this time and real-time traffic flow amount data are compared;
If when the numerical value of above-mentioned real-time traffic flow amount data is greater than or equal to 90% of standard vehicle data on flows numerical value, described interruption control module does not carry out any instruction;
If when the numerical value of above-mentioned real-time traffic flow amount data is less than 90% of described standard vehicle data on flows numerical value, comparison result is sent to described interruption control module by described numerical value comparing module, described interruption control module sending controling instruction is to described microwave data acquisition module, control to connect the interruption be connected with described microwave data acquisition module, use microwave data acquisition module to detect vehicle flowrate, and will the vehicle flowrate data information transfer extremely described data processing module obtained be detected;
(4) when the real-time traffic flow amount data obtained after data processing when the video obtained by described high definition video collecting module return to 90% of the standard vehicle data on flows numerical value corresponding to time period be greater than or equal to corresponding to this time again, described interruption control module controls to disconnect the interruption be connected with described microwave data acquisition module, only adopts high definition video collecting module to gather data message.
In the course of work of described detection system, the duty of the real-time high-definition video that staff can show according to described video display system to described high definition video collecting module carries out auxiliary judgment, interrupts control module assign the instruction of opening or closing microwave data acquisition module according to described judged result Non-follow control.
Also can selecting in above-described embodiment, described data processing module is set, the magnitude of traffic flow connection detected in data management module, vehicle flowrate numerical value comparing module and described interruption control module four modules between every two adjacent blocks is bidirectional transfer of information connection, the instruction controlling described data processing module and open is set in described interruption control module, and by described instruction issuing extremely described data processing module in described step (1), control the unlatching of described data processing module.
Obviously; above-described embodiment is only for clearly example being described; and the restriction not to embodiment; for those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here exhaustive without the need to also giving all embodiments, and thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (10)
1. can the urban road traffic flow amount detection systems that detects of choice for use HD video and microwave, be made up of terminal collecting unit and control module;
Described terminal collecting unit is made up of high definition video collecting module and microwave data acquisition module;
Described control module comprises data processing module, and described data processing module is connected with described high definition video collecting module, described microwave data acquisition module respectively;
Described control module also comprises the magnitude of traffic flow and detects data management module, and the described magnitude of traffic flow detects data management module and is connected with described data processing module;
It is characterized in that:
Described control module also comprises outage threshold memory module, vehicle flowrate numerical value comparing module and interrupts control module, the data message of Two Variables is stored in described outage threshold memory module, one of them variable is time period variable, and another variable is the standard vehicle data on flows variable corresponding with described time period variable;
Described vehicle flowrate numerical value comparing module detects data management module with described outage threshold memory module and the described magnitude of traffic flow respectively and is connected, described vehicle flowrate numerical value comparing module receives the real-time traffic flow amount data that the described magnitude of traffic flow detects data management module transmission, and described vehicle flowrate numerical value comparing module is by calling comparison with the connection of described outage threshold memory module to the threshold value stored therein and standard vehicle data on flows;
Described interruption control module is connected with described vehicle flowrate numerical value comparing module, receive the comparison result that described numerical value comparing module sends, and send corresponding interrupt control instruction to the described high definition video collecting module be connected with described interruption control module respectively and microwave data acquisition module.
2. traffic flow detection system according to claim 1, it is characterized in that: described outage threshold memory module and the described magnitude of traffic flow detect data management module and be connected, receive the data message that the described magnitude of traffic flow detects data management module transmission, described data message comprises Two Variables, a variable is time period variable, and another variable is the vehicle flowrate data variable corresponding with described time period variable; The traffic flow data of described outage threshold memory module to certain historical time section is averaged the standard vehicle data on flows being set as that each time period is corresponding.
3. traffic flow detection system according to claim 1 and 2, is characterized in that: the connection detected in data management module, vehicle flowrate numerical value comparing module and described interruption control module four modules between every two adjacent blocks of described data processing module, the magnitude of traffic flow is that bidirectional transfer of information connects.
4. traffic flow detection system according to claim 1 and 2, is characterized in that: described control module also comprises the traffic flow data memory module detecting data management module with the described magnitude of traffic flow and be connected.
5. traffic flow detection system according to claim 1, it is characterized in that: described control module also comprises the video display module with described high definition video collecting model calling, described high definition video collecting to video pictures be delivered to described video display module and show.
6. the traffic flow detection system according to claim 1 or 2 or 5, is characterized in that: described high definition video collecting module and described microwave data acquisition module are arranged on the same section of road.
7. adopt the method that traffic flow detection system according to claim 1 detects the magnitude of traffic flow, it comprises the steps:
(1) open described traffic flow detection system, and connect described high definition video collecting module by described interruption control module;
(2) video pictures captured is sent to data processing module by described high definition video collecting module, described data processing module carries out analysis and calculation process to the video pictures transmitted by described high definition video collecting module received, and video information is converted into the real-time traffic flow amount data message of the current mensuration section of road;
(3) real-time traffic flow amount data message is after treatment sent in the described magnitude of traffic flow detection data management module of described control module by described data processing module, stores the above-mentioned data message obtained in real time; The described magnitude of traffic flow detects data management module and is sent in described vehicle flowrate numerical value comparing module by real-time traffic flow amount data message after treatment simultaneously, and described vehicle flowrate numerical value comparing module calls standard vehicle data on flows corresponding with the time period corresponding to the time that video pictures described in step (2) is caught in described outage threshold memory module and real-time traffic flow amount data are compared;
If when the numerical value of above-mentioned real-time traffic flow amount data is greater than or equal to 90% of standard vehicle data on flows numerical value, described interruption control module does not carry out any instruction;
If when the numerical value of above-mentioned real-time traffic flow amount data is less than 90% of described standard vehicle data on flows numerical value, comparison result is sent to described interruption control module by described vehicle flowrate numerical value comparing module, described interruption control module sending controling instruction is to described microwave data acquisition module, control to connect the interruption be connected with described microwave data acquisition module, use microwave data acquisition module to detect vehicle flowrate, and will the vehicle flowrate data information transfer extremely described data processing module obtained be detected;
(4) when the real-time traffic flow amount data obtained after data processing when the video obtained by described high definition video collecting module return to 90% of the standard vehicle data on flows numerical value corresponding to the time period corresponding to time being greater than or equal to and being caught in video pictures described in step (2) again, described interruption control module controls to disconnect the interruption be connected with described microwave data acquisition module, only adopts high definition video collecting module to gather data message.
8. the method detected the magnitude of traffic flow according to claim 7, is characterized in that: in described step (1), and described data processing module, to described data processing module, is opened by described interruption control module transfer instruction.
9. the method detected the magnitude of traffic flow according to claim 8, is characterized in that: the described magnitude of traffic flow detects data management module by the traffic flow data unloading on the non-same day after storing in traffic flow data memory module.
10. the method that the magnitude of traffic flow is detected according to claim 7, it is characterized in that: the video display module of described control module shows the HD video picture that described high definition video collecting module gathers, the actual traffic situation Non-follow control according to described HD video picture reaction interrupts control module assigns instruction.
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| CN104200657B (en) * | 2014-07-22 | 2018-04-10 | 杭州智诚惠通科技有限公司 | A kind of traffic flow parameter acquisition method based on video and sensor |
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