CN100587759C - Automatic monitoring system for automobile overspeed - Google Patents
Automatic monitoring system for automobile overspeed Download PDFInfo
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- CN100587759C CN100587759C CN200810226479A CN200810226479A CN100587759C CN 100587759 C CN100587759 C CN 100587759C CN 200810226479 A CN200810226479 A CN 200810226479A CN 200810226479 A CN200810226479 A CN 200810226479A CN 100587759 C CN100587759 C CN 100587759C
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Abstract
The invention discloses an automatic motor vehicle over-speed monitoring system. In terms of the technical proposal, the system comprises a microwave detection module which is used for projecting a detection area on a detected road, detecting vehicles passing the detection area, and sending the obtained detection data; a video snapping module which is used for identifying and snapping vehicle license plates of the vehicles in a video stream detection manner when the microwave detection module detects the vehicles passing the detection area and sending the snapped images; an information processing module which is used for receiving the detection data sent by the microwave detection module and the snapped images sent by the video snapping module, matching the detection data and the images, and then comparing with the set standard speed value to obtain information of the over-speed vehicle. The system has high detection efficiency, high snapping precision and low manufacturing cost.
Description
Technical field
The present invention relates to technical field of micro communication, be specifically related to a kind of automatic monitoring system for automobile overspeed.
Background technology
It is the one of the main reasons that causes traffic hazard that automobile overspeed travels.Because the speed of a motor vehicle is too fast, the driver shortened relatively to the reaction time of traffic, and when emergency condition took place, braking distance was long, and vehicle is difficult to control, will cause the lighter " knock into the back ", vehicle is damaged; Weight person causes personal injury, for social and family bring massive losses.According to statistics, in the traffic offence case of incity, city, have approximately 30% be hypervelocity, in freeway traffic case of violation of law statistics, the ratio of hypervelocity case is also higher.Therefore, must take effective means, strictly administer the illegal phenomenon of driving over the speed limit, driver's strictness is travelled by the requirement of road speed limit regulation, reduce because traffic hazard and the illegal activities that hypervelocity causes.The promulgation of 2004 " the Chinese law on road traffic safety " also provides reliable legal basis for law enforcement agency carries out strong punishment.
At present, in automatic monitoring system for automobile overspeed, mainly contain following several means, a kind of is to utilize the toroid winding sensor as the hypervelocity measurement means, adds the video camera evidence-obtaining system, adopts this mode need break the road, particularly on highway, break the road, very inconvenient, and measuring accuracy is lower, keeps in repair extremely difficult; Another kind is to adopt the velocity radar horizontal detection as the hypervelocity measurement means, adds the video camera evidence-obtaining system, and this mode causes " fastening one person's story upon another person " of adjacent lane sometimes; The third is to utilize " three-in-one " velocity radar vertical detection as the hypervelocity measurement means, add the video camera evidence-obtaining system, this mode is captured the precision height, but cost an arm and a leg, when particularly being applied in multilane, cost is very high, and exists speed measuring point and candid photograph point that certain distance is arranged, video capture needs time-delay, occurs mistake sometimes and claps, leaks the phenomenon of clapping.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of automatic monitoring system for automobile overspeed, not only the detection efficiency height is captured the precision height, and cheap.
The objective of the invention is to be achieved through the following technical solutions:
A kind of automatic monitoring system for automobile overspeed, technical scheme comprises:
Microwave Detector is used for the vehicle through described surveyed area is detected, and the detection data that will obtain sending detecting projection surveyed area on the road surface;
The video capture module is used for by the video flow detection mode described vehicle being carried out license plate identification and candid photograph, and the described image of capturing being sent when described Microwave Detector detects the vehicle through described surveyed area;
Message processing module, be used to receive the described detection data that described Microwave Detector sends, receive the described candid photograph image that described video capture module sends, after described detection data and images match, with the standard speed value contrast that sets, obtain the information of over-speed vehicles.
Further, described Microwave Detector specifically comprises:
Transmitter unit is used for that the launched microwave signal comes the described surveyed area of projection on the road surface to detecting;
Receiving element, after being used to receive vehicle through surveyed area and running into the microwave signal of described transmitter unit emission, the reflection wave that returns;
Computing unit is used for receiving the time that vehicle returns reflection wave according to described receiving element, calculates the data that will detect;
Data transmission unit is used to send the described detection data that described computing unit obtains.
Further, described Microwave Detector is installed in trackside, and the height on the described detection of distance road surface is more than or equal to 4.5 meters.
Further, described detection data are data relevant with vehicle, comprise: one or more in the lane information of vehicle, the speed of a motor vehicle, vehicle flowrate, lane occupancy ratio and the vehicle classification.
Further, described transmitter unit is selected two radars for use, and described receiving element adopts a radar.
Further, described video capture module specifically comprises:
Image acquisition units is used to gather the image through the vehicle of described surveyed area;
Image identification unit is used for carrying out number plate identification by the image that described video flow detection mode collects described image acquisition units;
Image is captured the unit, and the vehicle that is used for described image identification unit is identified number plate is captured;
The image transmitting element is used to send described image and captures the image that the unit is captured.
Further, described video capture module specifically also comprises: secondary light source, being used under the low-light (level) situation capturing the unit for described image acquisition units and image provides light source auxiliary.
Further, described message processing module specifically comprises:
The Data Receiving unit is used to receive described detection data and described candid photograph image;
Matching unit is used for described detection data and described candid photograph image, mates according to the lane information of vehicle;
The classification and storage unit after being used for data after the coupling and the standard speed value that sets made comparisons, is saved in described data respectively in the corresponding file folder.
Further, after described classification and storage unit is used for data after the coupling and the standard speed value that sets made comparisons, described data are saved in respectively in the corresponding file folder, and described file specifically comprises: drive over the speed limit, low speed driving and three kinds of files of cruising.
Further, described message processing module specifically also comprises: information transmitting unit is used to send data message after the described classification and storage module stores to central control room (CCR).
Beneficial effect:
Adopt the method for the invention, utilize Microwave Detector to adopt the detection mode that tests the speed of " transversal section ", add the video camera evidence-obtaining system, this mode is not only captured the precision height, and it is cheap when being applied in multilane, simultaneously because non-perpendicular candid photograph mode, can utilize with Emergency Vehicle Lane and the candid photograph video camera is installed with wide little cantilever lever, so in maintenance, seal without system-wide during maintenance, only need emergent Lane Closed is got final product, in addition because the manner speed measuring point and video capture point almost are to be superimposed upon a bit, so the possibility of its false grasp shooting (back vehicle speed value is attached on the front truck) is just very little.
Description of drawings
Fig. 1 is the structural representation of system of the present invention;
Fig. 2 is the work synoptic diagram of Microwave Detector in the system of the present invention;
Fig. 3 is the application scenarios figure of system of the present invention.
Embodiment
A kind of automatic monitoring system for automobile overspeed of the present invention adopts Microwave Detector that two-way each motor vehicle through the trackside transversal section is tested the speed in real time., test the speed through out-of-date as vehicle, and all toy vehicle velocity value that will measure send to the candid photograph computing machine by the vehicle of Microwave Detector to corresponding track; Capture simultaneously the video camera of computing machine by being installed in corresponding track to through with the vehicle in the same place of Microwave Detector, handle fuzzy recognition technology by high speed image, adopt video flowing number plate detection mode, discern license number earlier, the feature video camera is captured the vehicle that this comes into view constantly then, and deposits in the hard disk of capturing computing machine in distant view+close shot two pictures modes.When preserving picture, corresponding velocity amplitude is attached on the picture, and detects the velocity amplitude that whether surpasses or be lower than setting, preserve with " hypervelocity ", " low speed " and " cruising " three files respectively simultaneously.
As shown in Figure 1, a kind of automatic monitoring system for automobile overspeed comprises:
Microwave Detector S11 is used for the vehicle through described surveyed area is detected, and the detection data that will obtain sending detecting projection surveyed area on the road surface;
Video capture module S12 is used for by the video flow detection mode described vehicle being carried out license plate identification and candid photograph, and the described image of capturing being sent when described Microwave Detector detects the vehicle through described surveyed area;
Message processing module S13, be used to receive the described detection data that described Microwave Detector sends, receive the described candid photograph image that described video capture module sends, after described detection data and images match, with the standard speed value contrast that sets, obtain the information of over-speed vehicles.
Described Microwave Detector specifically comprises:
Transmitter unit S111 is used for that the launched microwave signal comes the described surveyed area of projection on the road surface to detecting;
Receiving element S112, after being used to receive vehicle through surveyed area and running into the microwave signal of described transmitter unit emission, the reflection wave that returns;
Computing unit S114 is used for receiving the time that vehicle returns reflection wave according to described receiving element, calculates the data that will detect;
Transmitter unit described in the technical scheme of the present invention adopts two emission radars, and vehicle runs into the microwave signal of transmitter unit emission when entering surveyed area, can return a reflected signal to receiving element; When vehicle when surveyed area is gone out, also can return a reflected signal to receiving element; Like this mistiming between received twice reflected signal of receiving element, just draw vehicle,, just can calculate the speed in vehicle passing detection zone according to the distance of surveyed area by the used time of surveyed area.
And receive time of the reflected signal that vehicle returns according to receiving element, in conjunction with Microwave Detector and the distance that detects the track, can calculate the lane information of vehicle, thereby give vehicle location.
Data transmission unit S113 is used to send the described detection data that described computing unit obtains.
As shown in Figure 2, be Microwave Detector work synoptic diagram, described Microwave Detector S11 is installed in trackside, and the height on the described detection of distance road surface, just can form one and detect the transversal section as long as be arranged on more than 4.5 meters more than or equal to 4.5 meters on the track; An equipment only need be installed in a transversal section, is not subjected to the influence of central partition and metal guardrail, only needs 1.8 meters amount of side-shift to detect 76 meters distance.
Technical scheme of the present invention can detect the traffic data in a two-way 8-10 track, and described detection data are data relevant with vehicle, comprise: one or more in the lane information of vehicle, the speed of a motor vehicle, vehicle flowrate, lane occupancy ratio and the vehicle classification.
Described transmitter unit S111 selects two radars for use, and described receiving element S112 adopts a radar.
The present invention adopts digital radar ripple detection technique, per second is launched radar wave 1,000,000 times, energy is positioned vehicle accurately, while can cross over the detection of obstacles such as antiglare shield, grove and metal guardrail of central partition to the vehicle that partly is blocked, thereby greatly reduces the influence of isolation strip to accuracy of detection.And described Microwave Detector is not subjected to the influence of any weather, round-the-clock detection; Adopt from the normal moveout correction setting angle during installation and maintenance, avoid the error of manual synchronizing.
Described Microwave Detector can be used RS-485, RS-232 communication interface simultaneously, supports wireless transmission, and is solar powered; Also can detect the vehicle of reverse driving.
The vehicle flowrate precision that detects: single track flow＞95%, total flow＞98%; Bicycle speed of a motor vehicle precision＞97%, 10-250KM/H; Average speed trueness error＞97%, 10-250KM/H; Lane occupancy ratio precision: 〉=95%;
Vehicle classification: 4 kinds of vehicle classifications, parameter can be provided with voluntarily; All configuration informations all adopt the flash memory mode to preserve, and prevent that power down from losing;
Support that transfer rate is the RS-485 serial ports of 9600-921.6kps; Support that transfer rate is the RS-232 serial ports of 9600-57.6kps.
Described video capture module S12 specifically comprises:
Image acquisition units S121 is used to gather the image through the vehicle of described surveyed area; Adopt special video camera that vehicle image is gathered;
Image identification unit S122 is used for carrying out number plate identification by the image that described video flow detection mode collects described image acquisition units;
Image is captured cell S 123, and the vehicle that is used for described image identification unit is identified number plate is captured;
Image transmitting element S124 is used to send described image and captures the image that the unit is captured.
Described video capture module specifically also comprises: secondary light source S125, being used under the low situation of illuminance capturing the unit for described image acquisition units and image provides light source auxiliary, can according to circumstances select led light source, infrared light supply, floodlight, flashlamp light source for use.
Described message processing module S13 specifically comprises:
Data Receiving cell S 131 is used to receive described detection data and described candid photograph image;
Matching unit S132 is used for described detection data and described candid photograph image, mates according to the lane information of vehicle;
Classification and storage cell S 133 after being used for data after the coupling and the standard speed value that sets made comparisons, is saved in described data respectively in the corresponding file folder.
After described classification and storage cell S 133 is used for data after the coupling and the standard speed value that sets made comparisons, described data are saved in respectively in the corresponding file folder, and described file specifically comprises: drive over the speed limit, low speed driving and three kinds of files of non-hypervelocity.
Described message processing module specifically also comprises: information transmitting unit S134 is used to send data message after the described classification and storage module stores to central control room (CCR).Can pass through modes such as " optical fiber ", " GPRS or CDMA1X ", " wireless downloading ", relevant information is sent in the central control room (CCR), accepts the relevant information of center passback or the front end relevant information is downloaded in the notebook computer.
Shown in Figure 3, application scenarios figure for system of the present invention, transmitter unit in Microwave Detector has vehicle through out-of-date to the surveyed area that detects the track projection, vehicle is entering surveyed area and is leaving these two moment of surveyed area and can return two reflected signals (microwave signal of transmitter unit emission runs into vehicle and can reflect) to receiving element respectively, the mistiming of twice reflected signal that receives respectively according to reflector element, can calculate the speed that detects vehicle and also can detect some information relevant, and testing result is sent with vehicle;
Microwave Detector is detecting vehicle simultaneously, the video capture module is carried out video capture to the vehicle through surveyed area, finish by the video flow detection mode during process of capturing, earlier the vehicle through surveyed area is carried out number plate identification, the vehicle that identifies number plate is carried out image capture, will capture image and send; Because speed measuring point and video capture point almost overlap, so mistake bat rate is very low, so the candid photograph precision is very high;
Message processing module mates detection data and the candid photograph image that receives, velocity amplitude is attached on the candid photograph image, and compare with the standard speed value, comparative result is kept at respectively in the file that sets, the information of vehicles that exceeds the speed limit is sent to center command centre handle, the violation vehicle is punished.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1, a kind of automatic monitoring system for automobile overspeed is characterized in that, comprising:
Microwave Detector is used for detecting projection surveyed area on the road surface vehicle through described surveyed area being detected, and sends the detection data that obtain;
The video capture module is used for by the video flow detection mode described vehicle being carried out license plate identification and candid photograph when described Microwave Detector detects the vehicle through described surveyed area, and sends the candid photograph image;
Message processing module, be used to receive the described detection data that described Microwave Detector sends, receive the described candid photograph image that described video capture module sends, after described detection data and images match, with the standard speed value contrast that sets, obtain the information of over-speed vehicles.
2, the system shown in claim 1 is characterized in that, described Microwave Detector specifically comprises:
Transmitter unit is used for that the launched microwave signal comes the described surveyed area of projection on the road surface to detecting;
Receiving element, after being used to receive vehicle through surveyed area and running into the microwave signal of described transmitter unit emission, the reflection wave that returns;
Computing unit is used for receiving the time that vehicle returns reflection wave according to described receiving element, calculates the data that will detect;
Data transmission unit is used to send the described detection data that described computing unit obtains.
3, the system shown in claim 1 is characterized in that, described Microwave Detector is installed in trackside, and the height on the described detection of distance road surface is more than or equal to 4.5 meters.
4, the system shown in claim 1 or 2 is characterized in that, described detection data are data relevant with vehicle, comprise: one or more in the lane information of vehicle, the speed of a motor vehicle, vehicle flowrate, lane occupancy ratio and the vehicle classification.
5, the system shown in claim 2 is characterized in that, described transmitter unit is selected two radars for use, and described receiving element adopts a radar.
6, the system shown in claim 1 is characterized in that, described video capture module specifically comprises:
Image acquisition units is used to gather the image through the vehicle of described surveyed area;
Image identification unit is used for carrying out number plate identification by the image that described video flow detection mode collects described image acquisition units;
Image is captured the unit, and the vehicle that is used for described image identification unit is identified number plate is captured;
The image transmitting element is used to send described image and captures the image that the unit is captured.
7, the system shown in claim 6 is characterized in that, described video capture module specifically also comprises: secondary light source, being used under the low-light (level) situation capturing the unit for described image acquisition units and image provides light source auxiliary.
8, the system shown in claim 1 is characterized in that, described message processing module specifically comprises:
The Data Receiving unit is used to receive described detection data and described candid photograph image;
Matching unit is used for described detection data and described candid photograph image, mates according to the lane information of vehicle;
The classification and storage unit after being used for data after the coupling and the standard speed value that sets made comparisons, is saved in described data respectively in the corresponding file folder.
9, the system shown in claim 8, it is characterized in that, after described classification and storage unit is used for data after the coupling and the standard speed value that sets made comparisons, described data are saved in respectively in the corresponding file folder, and described file specifically comprises: drive over the speed limit, low speed driving and three kinds of files of cruising.
10, the system shown in claim 8 is characterized in that, described message processing module specifically also comprises: information transmitting unit is used to send data message after the described classification and storage module stores to central control room (CCR).
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| CN200810226479A CN100587759C (en) | 2008-11-12 | 2008-11-12 | Automatic monitoring system for automobile overspeed |
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| CN200810226479A CN100587759C (en) | 2008-11-12 | 2008-11-12 | Automatic monitoring system for automobile overspeed |
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| CN100587759C true CN100587759C (en) | 2010-02-03 |
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| CN113870580B (en) * | 2021-09-01 | 2022-09-20 | 北京中交兴路信息科技有限公司 | Overspeed detection method and device for truck, truck vehicle and truck system |
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