CN101908272A - Traffic safety sensing network based on mobile information - Google Patents
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Abstract
The invention discloses a traffic safety sensing network based on mobile information for road intelligent traffic management. The traffic safety sensing network takes a vehicle as a mobile intelligent sensing node and forms into a sensing network with a mobile communication network and a traffic monitoring center. A vehicle-mounted positioning system and a vehicle-mounted sensor immediately acquire the position and the speed of the vehicle as well as the image information in and out of the vehicle, thereby providing real-time road traffic condition information to a traffic monitoring center; and a monitoring vehicle and the traffic monitoring center can perform various information interaction through a mobile communication network. With a vision sensor and a vehicle driving status identifying system, the traffic safety sensing network has the functions for acquiring and processing the image, can realize the functions for monitoring the illegal driving and reappearing the traffic scene, assisting the safe driving of the vehicle, provides a new traffic and vehicle supervising route for the traffic management department, can improve the traffic capability of the road, can improve the driving safety of drivers, and effectively avoids and reduces the personal injury and the economic loss caused by traffic accident.
Description
Technical field
The present invention relates to a kind of traffic safety supervisory system, particularly a kind of traffic safety sensing network based on mobile message.
Background technology
Along with improving constantly of China's economic development and motorization level, the urban traffic congestion phenomenon is serious day by day, and in the face of the traffic information data of magnanimity, traditional traffic management modes can't adapt to the demand of reality.Problems such as urban traffic accident in recent years, traffic congestion cause great loss for society, economy.People are fully recognized that, only rely on the management of site traffic police strength can not adapt to the needs that future transportation is managed.Therefore realize that the intellectuality of traffic administration has been the inexorable trend of complying with era development.Under the background that sensing net industry is risen, the foundation of traffic safety sensing network can obtain good economic and social benefit.
Existing traffic monitoring system mainly in the fixed location, the set time gathers Traffic Information and obtains traffic related informations such as the magnitude of traffic flow, lane occupancy ratio.The collecting method of main flow adopts the roadside acquisition system to carry out at present.The roadside acquisition system is meant some fixing data acquisition equipments that are installed in roadside or road surface, for example circular row power detecting device, microwave detector, video detector etc.The zone of roadside collecting device is installed, and its transport information is obtained than being easier to, and information coverage is secure relatively.But this method exists not enough, and the fixed data collecting device is data such as measuring vehicle density, the speed of a motor vehicle directly, all is to rely on measurement indirectly and complicated algorithm to estimate just to obtain desired data, and accuracy of measurement is limited; It is huge that a large amount of fixed data collecting device investments is installed, the sensor of installing under the road surface can destroy road, detecting device under roadside and the road surface is damaged easily, and can't continue to obtain the driving information of each vehicle based on the traffic monitoring system of roadside fixed data collecting device, limited to the perception of road traffic condition.Also lack information mutual communication between existing in addition traffic monitoring system and the vehicle, form integral body, can not effectively manage vehicle.
Summary of the invention
The purpose of this invention is to provide a kind of traffic safety sensing network based on mobile message, it is to realize real-time continuous collection to the vehicle Various types of data by multiple sensors is installed on driving vehicle, carry out the vehicle safe driving state recognition, and link to each other with traffic surveillance and control center by mobile radio communication, form the traffic safety sensing network network, making between traffic surveillance and control center and the driving vehicle can information mutual communication, realizes the real-time effective monitoring of traffic surveillance and control center to road traffic and vehicle.
The objective of the invention is to be achieved through the following technical solutions.Traffic safety sensing network based on mobile message, it is to be made of monitoring vehicle, mobile radio communication and traffic surveillance and control center, monitoring vehicle is the vehicle that comprises the road real time running of city bus, taxi, it is characterized in that being equipped with on the monitoring vehicle vehicle positioning system, onboard sensor, vehicle running state recognition system and Vehicular communication system; Vehicle positioning system adopts Global Positioning System (GPS) GPS real-time detection vehicle position information, and by mobile radio communication vehicle position information is transferred to traffic surveillance and control center behind Vehicular communication system; Onboard sensor is gathered image inside and outside the speed of a motor vehicle, spacing, the car by being arranged on the monitoring vehicle sensor in different positions; The data that the vehicle running state recognition system collects onboard sensor are handled the driving safety traffic state recognition of going forward side by side, and the outer image of vehicle traveling information after the processing and car is transferred to traffic surveillance and control center by mobile radio communication behind Vehicular communication system; Realize information interaction by mobile radio communication between monitoring vehicle and the traffic surveillance and control center.
Onboard sensor on the above-mentioned monitoring vehicle comprises speed measuring device, distance measuring equipment, and video camera.Speed measuring device links to each other with the measuring vehicle speed instrument; Distance measuring equipment is installed in the head of monitoring vehicle; Totally two in video camera is installed near the rearview mirror in driver the place ahead respectively and is installed on the vehicle cab in driver the place ahead, is used for obtaining road ahead image and driver's face image.The vehicle running state recognition system is made of image processing module, the outer image processing module of car, power module and warning device in main control module, the car; Main control module links to each other with distance measuring equipment by speed measuring device in CAN bus and the onboard sensor, image processing module links to each other with main control module by the CAN bus with the outer image processing module of car in the car, link to each other by two video cameras of video input interface and onboard sensor simultaneously, warning device links to each other with main control module by audio interface, power module provides working power for each module in the vehicle running state recognition system, and main control module links to each other with Vehicular communication system by the RS-232 serial ports; Mobile radio communication of the present invention comprises GPRS network and Internet.The present invention as the intelligent movable sensing node, has constituted a sensing net with mobile radio communication and traffic surveillance and control center with monitoring vehicle, and traffic surveillance and control center can comprehensive perception road traffic condition and traveling state of vehicle.
After the data that speed measuring device on the monitoring vehicle, distance measuring equipment, camera acquisition arrive are handled through the vehicle running state recognition system, can realize that real-time overspeed detection, deviation detect, the place ahead spacing detects, driver status detects, and the measuring ability of driving against traffic regulations.Specific as follows:
Overspeed detection is obtained the travel speed of this car in real time by speed measuring device, gives the alarm when exceeding safe speed, reminds the driver to note.
Deviation detects, by to camera acquisition to car outside monocular image handle, can on structurized road, follow the tracks of the track variation of (comprising route and road edge) in real time, obtain position and the direction of this car, the safe condition of vehicle is judged according to this information with respect to the track.When departing from appears in vehicle, give the alarm, remind the driver to note.
The place ahead spacing detects, obtain distance between the place ahead barrier and this car by distance measuring equipment, again by to camera acquisition to car outside monocular image handle, according to the track tracking results, detect the obstacle vehicle in the track, obtain the position of obstacle vehicle, processing result image and distance measuring equipment measurement result are merged, according to the menace of fusion results disturbance in judgement vehicle this car.When this car occurring, give the alarm, remind the driver to note with front vehicles safe distance deficiency.
Driver status detects, by to camera acquisition to car in driver's face image carry out processing and identification, realize that driver status detects, when the driver fatigue state occurs or absent mindedly gives the alarm when waiting driving behavior, the prompting driver notes.
The detection of driving against traffic regulations, carry out processing and identification by the outer image of the car that video camera 10 is collected, when this car reverse driving, long-time and front vehicles safe distance deficiency occurring, taking bus zone and travel etc. when driving against traffic regulations situation, the monitoring vehicle information and the image of driving against traffic regulations are sent to traffic surveillance and control center.
Traffic surveillance and control center is responsible for the control and the management of whole traffic safety sensing network.Monitoring vehicle can carry out various information interactions by mobile radio communication with traffic surveillance and control center, and traffic surveillance and control center has database, stores each vehicle location, vehicle condition information and image information.Traffic surveillance and control center is handled the data that receive, obtain road traffic condition information and vehicle traveling information, realize road passage capability monitoring, intelligent scheduling, vehicle location tracking, information inquiry, distress alerting function, and can send information to the appointment monitoring vehicle by mobile radio communication.
The present invention compared with prior art its remarkable advantage is: 1, with monitoring vehicle as the intelligent movable sensing node, constituted a sensing net with mobile radio communication and traffic surveillance and control center, traffic surveillance and control center can be by the real-time comprehensive perception road traffic condition of the onboard sensor on the monitoring vehicle; 2, the vehicle running state recognition system both can provide the safe driving supplementary for the driver, can provide the driving vehicle image of driving against traffic regulations for traffic surveillance and control center again, when vehicle occur in the process of moving deviation, with front vehicles safety vehicle headway deficiency, perhaps the driver is absent minded sends warning when waiting driving behavior, improved the security of driving, when the form of driving against traffic regulations occurring be, be sent to traffic surveillance and control center by the mobile radio communication image of will driving against traffic regulations, be used for putting to the proof; 3, added video camera in the traffic safety sensing network of the present invention, it is vision sensor, has image collecting function, image information can provide traffic scene to reappear, monitor vehicle has or not act of violating regulations and accident generation etc. in real time, can be vehicle supervision department visual image is provided, conveniently carry out operations such as image reproducing, image retrieval; 4, this traffic safety sensing network provides brand-new traffic and vehicle supervision approach for vehicle supervision department, and can effectively prevent and reduce personal injury and the economic loss that great pernicious traffic hazard brings.
Concrete structure of the present invention is provided by the following drawings and embodiment.
Description of drawings
Fig. 1 is the general structure synoptic diagram of the traffic safety sensing network based on mobile message of the present invention.
Fig. 2 is based on the traffic safety sensing network information acquisition work of treatment schematic diagram of mobile message.
Fig. 3 is based on vehicle safe driving recognition system structural representation block diagram in the traffic safety sensing network of mobile message.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1, Fig. 2, said traffic safety sensing network based on mobile message is made up of monitoring vehicle 1, mobile radio communication 2 and traffic surveillance and control center 3 three parts according to the present invention.Monitoring vehicle 1 is the vehicle that comprises the road real time running of city bus and taxi, and vehicle positioning system 4, onboard sensor 5, vehicle running state recognition system 6 and Vehicular communication system 7 are housed on the monitoring vehicle 1; Wherein vehicle positioning system 4 adopts Global Positioning System (GPS) GPS real-time detection vehicle position information, can adopt brilliant GARMIN15; Onboard sensor 4 is made up of speed measuring device 8, distance measuring equipment 9, video camera 10.Vehicle running state recognition system 6 is made up of image processing module 12, the outer image processing module 13 of car, power module 14 and warning device 15 in main control module 11, the car.Speed measuring device 8 links to each other with automobile instrument panel, reads the monitoring vehicle present speed data on the automobile CAN-bus, links to each other with main control module 11 in the vehicle running state recognition system 6 by the CAN bus; Distance measuring equipment 9 links to each other with the millimetre-wave radar sensor that is installed in monitoring vehicle 1 head by Ethernet, obtains the distance of monitoring vehicle and the place ahead barrier, links to each other with main control module 11 in the vehicle running state recognition system 6 by the CAN bus; Video camera 10 is installed in monitoring vehicle 1 inside, totally two, all adopts the infrared pick-up machine.Wherein a video camera is installed on the vehicle cab in driver the place ahead, obtains driver's face image, and this video camera links to each other with dsp processor in the vehicle running state recognition system 6 by video input interface.Another video camera is installed near the rearview mirror in driver the place ahead, gathers the place ahead pavement image, and this video camera links to each other with dsp processor in the vehicle running state recognition system 6 by video input interface.Main control module 11 in the vehicle running state recognition system 6 adopts ARM LPC1758, and main control module 11 links to each other with vehicle positioning system 4 with Vehicular communication system 7 by the RS232 serial ports; Wherein the vehicle position information of vehicle positioning system 4 detections is to be transferred to Vehicular communication system 7 again by the main control module in the vehicle running state recognition system 6 11; The outer image processing module 13 of image processing module 12 and car is dsp processor in the car, can adopt DM648, and dsp processor links to each other with main control module 7 by the CAN bus; Power module 14 can adopt the LM2596 of Motorola power module, and warning device 15 is loudspeaker, links to each other with main control module 11 by audio interface.Vehicular communication system 7 can adopt the SIM300GPRS module.Vehicle running state recognition system 6 concrete functions are as follows:
Flame Image Process in the car, dsp processor are carried out Flame Image Process after receiving the interior driver's face image of the car that collects, and driver drowsy, yawn, head pose etc. are discerned, and recognition result is sent to main control module 11.
The outer Flame Image Process of car, dsp processor are carried out Flame Image Process after receiving the outer road image of the car that collects, and realize that deviation detects, and the place ahead spacing detects, the detection of driving against traffic regulations, and recognition result is sent to main control module 11.Concrete grammar is:
Deviation detects, and follows the tracks of the track variation of (comprising route and road edge) on structurized road in real time, obtains position and the direction of this car with respect to the track, according to this information the safe condition of vehicle is judged.By detecting the trade line at single-frame images, adopt the robustness trade line drawing algorithm of quick Hough conversion, realize departing from detection algorithm based on the lane line of trade heading line off point.
The place ahead spacing detects, and according to the track tracking results, detects the obstacle vehicle in the track, and processing result image and distance measuring equipment measurement result are merged in the position that obtains the obstacle vehicle, according to the menace of fusion results disturbance in judgement vehicle to this car.
The detection of driving against traffic regulations, the real-time follow-up track has judged whether this car reverse driving, has taken the bus zone state of driving against traffic regulations such as travel.
Mobile radio communication 2 comprises GPRS network and Internet, is responsible for the data transmission between monitoring vehicle 1 and the traffic surveillance and control center 3; Traffic surveillance and control center 3 is provided with transport information processing enter and traffic information management database, and the data that the monitoring vehicle that traffic information management database real-time storage receives sends comprise vehicle location and image information.By data processing, generate various transport information and use, and can monitor any designated vehicle for traffic administration person.
Traffic surveillance and control center 3 is responsible for the control and the management of whole traffic safety sensing network.Traffic surveillance and control center 3 comprises following several functions:
(1) road passage capability monitoring; According to vehicle location information, analyze traffic parameters such as road traffic, vehicle average velocity and queue length, carry out the road passage capability monitoring.
(2) intelligent scheduling; According to the traffic conditions of road, the planning travel route relieves the congestion of traffic.
(3) vehicle location is followed the trail of; Utilize GPS and electronic chart can demonstrate the physical location of vehicle in real time, and amplify, dwindle, reduce, change figure arbitrarily; Can move with target, target is remained on the screen; Can realize that also multiwindow, many vehicles, multi-screen follow the tracks of simultaneously, and can show the image that receives synchronously.
(4) intelligent information inquiry; Monitoring center can utilize the Monitoring and Controlling platform in the zone arbitrarily information of vehicles inquire about, and can be traffic administration person the image scene of driving against traffic regulations be provided, reappear traffic scene.
(5) distress alerting; Monitoring management system can carry out emergency aid to the vehicle that meets dangerous situation or have an accident.The electronic chart of Surveillance center can show help information and warning target, cooks up optimum programme of assistance.
Claims (5)
1. based on the traffic safety sensing network of mobile message, it is to be made of monitoring vehicle [1], mobile radio communication [2] and traffic surveillance and control center [3], monitoring vehicle [1] is the vehicle that comprises the road real time running of city bus, taxi, it is characterized in that being equipped with on the monitoring vehicle [1] vehicle positioning system [4], onboard sensor [5], vehicle running state recognition system [6] and Vehicular communication system [7]; Vehicle positioning system [4] adopts Global Positioning System (GPS) GPS real-time detection vehicle position information, and by mobile radio communication [2] vehicle position information is transferred to traffic surveillance and control center [3] behind Vehicular communication system [7]; Onboard sensor [5] is by being arranged on the inside and outside image of the sensor acquisition speed of a motor vehicle, spacing, car on monitoring vehicle [1] diverse location; The data that vehicle running state recognition system [6] collects onboard sensor [5] are handled the driving safety traffic state recognition of going forward side by side, and the outer image of vehicle traveling information after the processing and car is transferred to traffic surveillance and control center [3] by mobile radio communication [2] behind Vehicular communication system [7]; Realize information interaction by mobile radio communication [2] between monitoring vehicle [1] and the traffic surveillance and control center [3].
2. according to the described traffic safety sensing network of claim 1 based on mobile message, it is characterized in that onboard sensor [5] is by speed measuring device [8], distance measuring equipment [9], and video camera [10] is formed, speed measuring device [8] links to each other with the measuring vehicle speed instrument, distance measuring equipment [9] is installed in the head of monitoring vehicle [1], totally two in video camera [10] is installed near the rearview mirror in driver the place ahead respectively and is installed on the vehicle cab in driver the place ahead.
3. according to claim 1 or 2 described traffic safety sensing networks, it is characterized in that vehicle running state recognition system [6] is made of image processing module [12], the outer image processing module [13] of car, power module [14] and warning device [15] in main control module [11], the car based on mobile message; Main control module [11] links to each other with distance measuring equipment [9] by the middle speed measuring device [8] of CAN bus and onboard sensor [5], image processing module [12] links to each other with main control module [11] by the CAN bus with the outer image processing module [13] of car in the car, link to each other with [5] two video cameras of onboard sensor [10] by video input interface simultaneously, warning device [15] is arranged on the monitoring vehicle [1], it links to each other with main control module [11] by audio interface, power module [14] provides working power for each module in the vehicle running state recognition system [6], and main control module [11] links to each other with Vehicular communication system [7] by the RS-232 serial ports.
4. according to the described traffic safety sensing network of claim 3, it is characterized in that interior image processing module [12] of car and the outer image processing module [13] of car are dsp processor based on mobile message.
5. according to the described traffic safety sensing network of claim 1, it is characterized in that mobile radio communication [2] comprises GPRS network and Internet based on mobile message.
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