CN105679091A - Visualized early warning method against collision based on Internet of Vehicles - Google Patents
Visualized early warning method against collision based on Internet of Vehicles Download PDFInfo
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- CN105679091A CN105679091A CN201610040148.7A CN201610040148A CN105679091A CN 105679091 A CN105679091 A CN 105679091A CN 201610040148 A CN201610040148 A CN 201610040148A CN 105679091 A CN105679091 A CN 105679091A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/165—Anti-collision systems for passive traffic, e.g. including static obstacles, trees
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
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Abstract
The invention provides a visualized early warning method against collision based on the Internet of Vehicles. According to the method, vehicles exchange state messages by utilizing the vehicular Ad-hoc network technology to sense the driving states of vehicles in the surrounding, limit of the visibility is overcome, position information of vehicles that cannot be seen can be received, and after receiving the information, a vehicle can use a collision early-warning algorithm to determine whether the vehicle may collide with a neighbor vehicle. According to the invention, satellite positioning coordinates are converted into vehicle-mounted screen coordinates, and the driving positions and states of the vehicle and the neighbor vehicle are displayed in a vehicle-mounted screen in real time.
Description
Technical field
The present invention relates to a kind of energy method by the real-time position demonstrating neighbours' vehicle of Vehicular display device and the dangerous tip that whether this vehicle is had collision, belong to vehicle active safety field.
Background technology
In conventional Clash-Visualization method for early warning invention, the present situation of research is roughly divided into two directions, the auxiliary equipment being to utilize vehicle, and another is to utilize to cooperate between vehicle. In conventional invention and subject study, for instance numerous literature research be in accordance with radar and various kinds of sensors is the environmental information around receiving party's formula collection vehicle, and give vehicle processor to carry out visualization processing. This existing auxiliary equipment is particularly susceptible to the restriction of environmental factors, is limited to visual line of sight simultaneously, and is confined to the scope that equipment itself is suitable for.
Such as patent CN103241174A, CN104204847A: be the environment or the vehicle that utilize photographic head to capture surrounding, these modes can exchange the plane pattern of static state between vehicle. This mode is limited by environment and vehicle is three-dimensional and motion feature so that the information collected is inaccurate.
For another patent of invention CN200510118935, catch the environment after car with photographic head and carry out visualization processing again, so employ device, but do not make full use of device, the situation of vehicle back can only be observed.
Summary of the invention
The technical problem to be solved in the present invention is: avoiding the restriction that photographic head, infrared ray and centimeter wave detection surrounding bring, comprehensive, dynamic realtime ground obtains the stereoscopic-state of surrounding vehicles.
In order to solve above-mentioned technical problem, the present invention provides the Clash-Visualization method for early warning of neighbours' vehicle location and transport condition in a kind of driving process based on the technology that car is networked, making driver pass through Vehicular screen this vehicle of perception and transport condition of surrounding vehicles in the way of full visual angle by the method, if there being collision danger, reminding driver by this neighbours' vehicle of the notable labelling of screen.
The concrete technical scheme of the present invention there is provided a kind of Clash-Visualization method for early warning based on car networking, comprises the following steps:
The first step, on vehicle at least mount display, wireless transmitter and satellite positioning device, all vehicles being provided with display device, wireless transmitter and satellite positioning device have collectively constituted vehicle self-organizing network, it is characterised in that:
Second step, Current vehicle obtain the abundant satellite positioning coordinate point of neighbours' vehicle about, its size and correspondence position on the display apparatus is calculated by all satellite positioning coordinate points of each neighbours' vehicle, size according to each neighbours' vehicle and correspondence position, at the profile of relevant position display respective neighbor vehicle of the display device of Current vehicle;
Geographical coordinates that 3rd step, each vehicle get according to satellite positioning device, ground course angle, acceleration, speed, and the motion model of the overall vehicle based on vehicle is set up by the road information of numerical map and the historical data information of vehicle traveling, the trace information of prediction following n second is calculated according to motion model, this trace information is formed packet together with temporal information, is outwards broadcasted by vehicle self-organizing network;
After 4th step, Current vehicle receive the packet of neighbours' vehicle broadcast, judge in the following n second, whether the secure border formed by the track of Current vehicle has overlapping with the secure border formed by the track of neighbours' vehicle, if having, then secure border is had neighbours' marking of cars of overlap out on the display device of Current vehicle.
Preferably, in described 3rd step, the trace information of vehicle n in future second being separated into the interval trace information every the m second, with corresponding temporal information, each interval trace information is formed a packet, n/m+1 packet of composition is outwards broadcasted altogether.
Preferably, in described 4th step, if having the secure border of neighbours' vehicle and the secure border of Current vehicle to overlap, then by having overlapping neighbours' marking of cars with the secure border of Current vehicle for a kind of color, it is another kind of color by other neighbours' markings of cars.
Preferably, in described 4th step, if having the secure border of neighbours' vehicle and the secure border of Current vehicle to overlap, then produce sound alarm.
Preferably, in described second step, Current vehicle obtains four satellite positioning coordinate points of neighbours' vehicle about.
Preferably, in described second step, the front being arranged above Current vehicle or just northern of described display device, or described display device shows blank background, the profile of described neighbours' vehicle is superimposed upon on blank background, or showing electronic chart on described display device, the profile of described neighbours' vehicle is superimposed upon on electronic chart.
Preferably, in described second step, the profile of neighbours' vehicle is rectangle.
Preferably, in described second step, calculate its size by all satellite positioning coordinate points of each neighbours' vehicle and correspondence position on the display apparatus adopt method calculated as below:
If the length of display device × wide is M × N, resolution is R × C, and the proportional sizes of numerical map used by display device is 1: k, then satellite positioning coordinate point (xd, yd) coordinate on the display apparatus is (Xp, YP), then have:
In method provided by the invention, by using vehicle self-organizing network, (English abbreviation is vehicle: VANET) exchange of skills status message carrys out the transport condition of perception surrounding vehicles, so can break through visual line of sight, the positional information of complete invisible vehicle can be received, in order to by collision warning algorithm, this vehicle receiver judges whether neighbours' vehicle and this vehicle have the danger of collision after information. The present invention is converted to Vehicular screen coordinate the satellite positioning coordinate of vehicle, the real-time traveling-position showing this vehicle and neighbours' vehicle and state in Vehicular screen.
Characteristic according to car networking, the vehicle collision prewarning under vile weather, tunnel environment, high velocity environment and turn inside diameter environment can reach the danger of collision free. Owing to being adapted to different scenes so that driver at a glance it is observed that the position of surrounding neighbours vehicle and transport condition, and carries out anti-collision warning according to vehicle color by Vehicular screen. It is substantially reduced the possibility that vehicle accident occurs. If vehicle on the horizon is not responded by driver, will there is the possibility causing a chain of collision. Driver personal and society are had positive effect by the present invention.
Accompanying drawing explanation
Fig. 1 is method for visualizing;
Fig. 2 is intersection example;
Fig. 3 is crossing turning anti-collision warning example;
Fig. 4 is general craspedodrome road example.
Detailed description of the invention
For making the present invention become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
The present invention relates to a kind of Clash-Visualization method for early warning based on car networking so that the transport condition of neighbours' vehicle represents in real time in Vehicular screen, and provides anti-collision warning to point out. The architecture of method provided by the invention is as shown in Figure 1. The method cooperates based between the vehicle of VANET technology so that all vehicles are by the real-time position demonstrating neighbours' vehicle of Vehicular display device and whether this vehicle has the dangerous prompting of collision and real-time traffic information. In the present embodiment, the present invention by neighbours' vehicle include, but are not limited to represent, as tinted, the danger that whether this vehicle is had collision, such as green expression Current vehicle, there is the vehicle of risk of collision in red expression and Current vehicle, it is also possible to carries out early warning in other sensory perception's modes such as sound. In the present invention, vehicle carrys out the transport condition of perception surrounding vehicles by using VANET exchange of skills status message, so can break through visual line of sight (as shown in Figure 3, have any one vehicle in two cars tinted to an other vehicle in sight line invisible), the positional information of complete invisible vehicle can be received, in order to by collision warning algorithm, this vehicle receiver judges whether neighbours' vehicle and this vehicle have the danger of collision after information. In the present embodiment, the gps coordinate of vehicle is converted to Vehicular screen coordinate, the real-time traveling-position showing this vehicle and neighbours' vehicle and state in Vehicular screen.
Fig. 1 is shown through wireless transmitter and receives transport condition and the real-time position information of this vehicle that all vehicles send around this car, by visual algorithm after this vehicle receiver, this vehicle and about all vehicles show in proportion on the display screen with the angle of top view.
Two real scenes that Fig. 2,3 and Fig. 4 illustrate in embodiments of the present invention describe. Wherein one has the vehicle tinted to represent Current vehicle, and other vehicles are neighbours' vehicle, and other one has the vehicle tinted to represent the adventurous vehicle of Current vehicle.
The scene of Fig. 2,3 and Fig. 4 is typical scene screen display method, and Current vehicle receives positional information and the driving information of all vehicles around. Currently carry out processing these data through visualized algorithm, be mainly and gps coordinate is converted to screen coordinate. When determining whether risk of collision, the present invention carries out anti-collision warning detection according to the driving information of vehicle by collision warning algorithm. For there being neighbours' vehicle of risk of collision to use red display use to include but not limited to sound prompting.
In the present invention, vehicle needs vehicle-carrying display screen, wireless transmitter, GPS equipment are installed. After Current vehicle receives the information of surrounding neighbours vehicle, utilize central processing unit to calculate, use anti-collision warning method of the present invention to judge.
In the present embodiment, the information of the neighbours' vehicle received includes following 2 points:
1) four satellite positioning coordinate points of neighbours' vehicle are to draw out the profile of vehicle, and are shown to above display screen according to Vehicular screen coordinate. Four coordinate points receiving vehicle just can calculate the real size of vehicle and concrete position, and real vehicle is reduced ratio and shows by the size of present invention Vehicular screen.The present invention by the coordinate of vehicle received can know really vehicle size and with the distance of this car, accurate can draw vehicle size and trace information on map or screen.
The geographical coordinates received is converted into screen coordinate by the present invention, is shown on car-mounted terminal display screen. Assuming that the length of vehicle-carrying display screen × wide is for M × N, resolution is R × C, and the proportional sizes of numerical map used by display device is 1: k, then satellite positioning coordinate point (xd, yd) coordinate on the display apparatus is (Xp, YP), then have:
Calculating by formula above, the present invention can be shown to other the vehicle coordinate received above the car-mounted display screen of this vehicle.
2) neighbours' vehicle prediction oneself is in the position of following n second, and is broadcasted. After Current vehicle receives the future location information of neighbours' vehicle prediction, can judge whether this car and neighbours have risk of collision based on this. A kind of Clash-Visualization method for early warning based on car networking
The present invention is in Clash-Visualization early warning scheme: by the above-mentioned 2nd in the present invention) after the anti-collision warning method put processes, give different neighbours' vehicles and use different colors to be labeled. By the different colors additional information as visualization portion so that driver can comprehensively identify which is to this vehicle adventurous neighbours' vehicle in the future. Those skilled in the art can also increase sound prompting.
The concrete steps of the present invention include:
The information such as step 1, the longitude and latitude position of other neighbours' vehicles received according to Current vehicle, delineate the actual size rectangle of vehicle on the vehicle-carrying display screen of Current vehicle.
Step 2, by under car networked environment (VANTEs) each vehicle broadcast data exchange, this vehicle is according to obtaining geographical coordinates, ground course angle, acceleration, speed, and the motion model of the overall vehicle based on vehicle is set up by the road information of numerical map and the historical data information of vehicle traveling, this car calculates the trace information predicting this car, and the trace information of this vehicle 3s in future is divided into the vehicle position information every 0.2s and temporal information composition, it is 16 packets altogether, exchanges data by Radio Broadcasting Agreements.
Step 3, judge neighbours' vehicle position at future time instance, if future sometime, the secure border of neighbours' vehicle and Current vehicle has overlap.
If step 4 step 3 judges that secure border has overlap, then it is assumed that neighbours' vehicle and this vehicle have risk of collision, then to this neighbours' vehicle with red display.
If step 4 step 3 judges do not have overlap, illustrating to be safe from danger, mobile unit normally shows position and the original color of surrounding vehicles of this car and surrounding vehicles.
The vehicle of the present invention is characterised by: vehicle can use traveling-position and the state of this vehicle and neighbours' vehicle in the display road traffic that method that the present invention describes is real-time on car-mounted display screen, it is shown on the blank background or electronic chart that include but not limited to Vehicular screen, it is desirable to the front being arranged above this car or just northern of screen. Give shown neighbours' vehicle painted according to collision warning algorithm, whether have the danger of collision with difference with this car.
The anti-collision warning notice that use of the present invention is painted, driver is allowed to pass through traveling-position and the state of this vehicle and neighbours' vehicle in the comprehensive perception road traffic of car-mounted display screen, being shown in and include but not limited on the blank background of Vehicular screen, electronic chart, the present invention is using the surface of screen as the positive north in the front of this vehicle or geographical position.Prediction according to collision warning algorithm, shows there being the surrounding vehicles of risk of collision to give red coloration with this vehicle, and whether this vehicle has the danger of collision with difference.
Claims (8)
1., based on a Clash-Visualization method for early warning for car networking, comprise the following steps:
The first step, on vehicle at least mount display, wireless transmitter and satellite positioning device, all vehicles being provided with display device, wireless transmitter and satellite positioning device have collectively constituted vehicle self-organizing network, it is characterised in that:
Second step, Current vehicle obtain the abundant satellite positioning coordinate point of neighbours' vehicle about, its size and correspondence position on the display apparatus is calculated by all satellite positioning coordinate points of each neighbours' vehicle, size according to each neighbours' vehicle and correspondence position, at the profile of relevant position display respective neighbor vehicle of the display device of Current vehicle;
Geographical coordinates that 3rd step, each vehicle get according to satellite positioning device, ground course angle, acceleration, speed, and the motion model of the overall vehicle based on vehicle is set up by the road information of numerical map and the historical data information of vehicle traveling, the trace information of prediction following n second is calculated according to motion model, this trace information is formed packet together with temporal information, is outwards broadcasted by vehicle self-organizing network;
After 4th step, Current vehicle receive the packet of neighbours' vehicle broadcast, judge in the following n second, whether the secure border formed by the track of Current vehicle has overlapping with the secure border formed by the track of neighbours' vehicle, if having, then secure border is had neighbours' marking of cars of overlap out on the display device of Current vehicle.
2. as claimed in claim 1 a kind of based on car networking Clash-Visualization method for early warning, it is characterized in that, in described 3rd step, the trace information of vehicle n in future second is separated into the interval trace information every the m second, with corresponding temporal information, each interval trace information is formed a packet, and n/m+1 packet of composition is outwards broadcasted altogether.
3. as claimed in claim 1 a kind of based on car networking Clash-Visualization method for early warning, it is characterized in that, in described 4th step, if having the secure border of neighbours' vehicle and the secure border of Current vehicle to overlap, then by having overlapping neighbours' marking of cars with the secure border of Current vehicle for a kind of color, it is another kind of color by other neighbours' markings of cars.
4. a kind of Clash-Visualization method for early warning based on car networking as claimed in claim 1, it is characterised in that in described 4th step, if having the secure border of neighbours' vehicle and the secure border of Current vehicle to overlap, then produce sound alarm.
5. as claimed in claim 1 a kind of based on car networking Clash-Visualization method for early warning, it is characterised in that in described second step, Current vehicle obtains four satellite positioning coordinate points of neighbours' vehicle about.
6. as claimed in claim 1 a kind of based on car networking Clash-Visualization method for early warning, it is characterized in that, in described second step, the front being arranged above Current vehicle or just northern of described display device, or described display device shows blank background, the profile of described neighbours' vehicle is superimposed upon on blank background, or shows electronic chart on described display device, and the profile of described neighbours' vehicle is superimposed upon on electronic chart.
7. as claimed in claim 1 a kind of based on car networking Clash-Visualization method for early warning, it is characterised in that in described second step, the profile of neighbours' vehicle is rectangle.
8. as claimed in claim 1 a kind of based on car networking Clash-Visualization method for early warning, it is characterized in that, in described second step, calculate its size by all satellite positioning coordinate points of each neighbours' vehicle and correspondence position on the display apparatus adopt method calculated as below:
If the length of display device × wide is M × N, resolution is R × C, and the proportional sizes of numerical map used by display device is 1: k, then satellite positioning coordinate point (xd, yd) coordinate on the display apparatus is (Xp, Yp), then have:
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CN106875746A (en) * | 2017-02-27 | 2017-06-20 | 山东师范大学 | A kind of vehicle security drive early warning system and method |
CN106985818A (en) * | 2017-04-14 | 2017-07-28 | 济南浪潮高新科技投资发展有限公司 | A kind of motor vehicle intelligent drive assist system based on cloud computing |
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CN108428369A (en) * | 2018-03-22 | 2018-08-21 | 大连海事大学 | A kind of information of vehicles processing system |
CN108447306B (en) * | 2018-04-23 | 2020-06-30 | 北京交通大学 | Simulation method for real-time position sharing collision avoidance early warning among collision vehicles at uncontrolled intersection |
CN108447306A (en) * | 2018-04-23 | 2018-08-24 | 北京交通大学 | Real time position shares the analogy method of intelligent collision warning between No-shell culture conflict vehicle |
CN108922242A (en) * | 2018-06-05 | 2018-11-30 | 宁波金洋化工物流有限公司 | The preventative tracking of harmful influence haulage vehicle and control platform |
CN108875658A (en) * | 2018-06-26 | 2018-11-23 | 大陆汽车投资(上海)有限公司 | A kind of object identifying method based on V2X communication apparatus |
CN109523830A (en) * | 2018-11-08 | 2019-03-26 | 中交第公路勘察设计研究院有限公司 | Track of vehicle prediction and anti-collision warning method based on high-frequency high-precision location information |
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