CN103895572A - Method and device for displaying driving information of vehicle in front visual field - Google Patents
Method and device for displaying driving information of vehicle in front visual field Download PDFInfo
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- CN103895572A CN103895572A CN201410162650.6A CN201410162650A CN103895572A CN 103895572 A CN103895572 A CN 103895572A CN 201410162650 A CN201410162650 A CN 201410162650A CN 103895572 A CN103895572 A CN 103895572A
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Abstract
The invention provides a method and device for displaying driving information of a vehicle in a front visual field, and belongs to the field of automobiles. The method and device are used for solving the problem that an existing vehicle cannot acquire the driving information of the vehicle in the front visual field and provide the driving information of the vehicle in the front visual field for a driver. According to the method and device for displaying the driving information of the vehicle in the front visual field, a space coordinate system is built with any point in a vehicle as an original point, coordinates, in the space coordinate system, of the eyes of the driver are determined by acquiring images of the positions where the eyes of the driver are located, coordinates, in the space coordinate system, of the target vehicle in front of the vehicle are detected and determined through a radar, the point of intersection of the connecting line of the eyes of the driver and the target vehicle in front of the vehicle and a front windshield is determined and serves as the image position of the target vehicle in front of the vehicle, the information of the target vehicle in front of the vehicle is displayed at the position in real time, the driver can conveniently acquire information of the speed or the relative speed of the target vehicle in front of the vehicle, the distance between the target vehicle and the vehicle, expected overtaking time and the like in time, and therefore driving safety is improved.
Description
Technical field
The present invention relates to automotive field, relate in particular to vehicle traveling information read out instrument and method in a kind of forward visibility.
Background technology
Along with being on the increase of city vehicle, the incidence of traffic accident is also rising year by year.On current vehicle, chaufeur can only be seen through front windshield glass the wagon flow in front, but cannot obtain intuitively the speed (or relative velocity), distance of all vehicles in the visual field, with the relative velocity of the two cars information of how long can overtaking other vehicles etc., therefore cannot adjust in time self drive speed and direction etc. according to these information, thereby cause the accidents such as front car rear-end or scratch.Therefore, be badly in need of at present a kind of technical scheme that can make chaufeur know in time all vehicle traveling informations in forward visibility.
Summary of the invention
What the present invention will solve is that existing vehicle cannot obtain and provide the vehicle traveling information in forward visibility to chaufeur, thereby make chaufeur cannot be in time adjust and easily cause the problem of traffic accident self drive speed and direction etc., the invention provides vehicle traveling information read out instrument and method in a kind of forward visibility.
For solving the problems of the technologies described above, embodiments of the invention provide vehicle traveling information read out instrument in a kind of forward visibility, comprising:
Be affixed on the transparent demonstration film on shield glass;
Be arranged at the first camera and the second camera of chaufeur front side in car, be respectively used to aim at driver's eyes and carry out image acquisition, the first image obtaining is sent to graphics processing unit by the first camera, and the second image obtaining is sent to graphics processing unit by second camera;
The graphics processing unit being connected with described first, second camera, for the treatment of described the first image and the second image, the eyes session number that obtains the first camera and chaufeur according to this and the eyes line Data Concurrent of second camera and chaufeur give control unit;
Be arranged at the radar on vehicle, measure distance and the angle of front target vehicle and this car and take off data is sent to control unit;
The control unit being electrically connected respectively with described transparent demonstration film, the first camera, second camera, graphics processing unit and radar, be used for controlling connected component working, determine the position of the picture of front target vehicle on front windshield according to the data of receiving, and at this front target vehicle driving information of this position display of described transparent demonstration film.
Preferably, described control unit is set up space coordinates take any point in car as initial point in advance, determine the surface equation of described front windshield in these space coordinates, and according to the eyes session number of the first camera of receiving and chaufeur according to this and the eyes line data of second camera and chaufeur determine the coordinate of driver's eyes in described space coordinates, and determine the coordinate of front target vehicle in described space coordinates according to the distance of front target vehicle and this car and angle, finally determine the position of the picture of front target vehicle on front windshield according to the coordinate in described driver's eyes and the described space coordinates of the each leisure of front target vehicle and the surface equation of front windshield in these space coordinates.
Preferably, described the first camera and second camera are arranged on meter panel of motor vehicle.
Preferably, described radar is arranged at vehicle intake grid position.
Preferably, described front target vehicle driving information comprises that the relative position in described space coordinates changes front vehicle speed/relative this vehicle speed of calculating, and this spacing and expect passing time information to control unit with this car according to this car in certain Measuring Time.
The present invention also provides vehicle traveling information display method in a kind of forward visibility, comprises the following steps:
Step 1: to set up space coordinates when any point in front truck as initial point, and determine when the surface equation of vehicle in front front windshield in these space coordinates;
Step 2: survey and coordinate and the front target vehicle coordinate in described space coordinates of definite driver's eyes in described space coordinates;
Step 3: the coordinate according to driver's eyes in described space coordinates and the coordinate of front target vehicle in described space coordinates, calculate driver's eyes and the line equation of front target vehicle in described space coordinates;
Step 4: the line equation in described space coordinates according to driver's eyes and front target vehicle, and when the surface equation of vehicle in front front windshield in these space coordinates, determine the position of front target vehicle at the picture when on vehicle in front front windshield;
Step 5: demonstration front, the position target vehicle driving information at described front target vehicle at the picture when on vehicle in front front windshield.
Preferably, in described step 2, survey and the coordinate of definite driver's eyes in described space coordinates, comprising:
With being arranged at first, second image that obtains driver's eyes present position when first, second camera of diverse location in vehicle in front;
The first image is carried out image processing and obtained the eyes line data of the first camera and chaufeur, the second image is carried out image processing and obtained the eyes line data of second camera and chaufeur;
According to the eyes session number of the first camera and chaufeur according to this and the eyes line data of second camera and chaufeur, calculate the eyes line of the first camera and chaufeur and the intersecting point coordinate of the eyes line of second camera and chaufeur in described space coordinates, and using this intersection point as driver's eyes the coordinate in described space coordinates.
Preferably, in described step 2, survey and the coordinate of definite front target vehicle in described space coordinates, comprising:
When radar is set in vehicle in front, adopt distance and the angle of this radar surveying front target vehicle and this car;
Determine the coordinate of front target vehicle in described space coordinates according to the distance of front target vehicle and this car and angle.
Preferably, the target vehicle driving information of front described in step 5 comprises: the relative position according to the front target vehicle of described radar surveying in certain Measuring Time and this car in described space coordinates changes, this vehicle speed of the front vehicle speed that calculates/relatively, with this spacing and expection passing time information.
Preferably, before described step 5, also comprise step: when transparent demonstration film is set on vehicle in front front windshield;
Described step 5 comprises: described transparent demonstration film, with described front target vehicle at identical demonstration front, the position target vehicle driving information in the position when picture on vehicle in front front windshield.
The beneficial effect of technique scheme of the present invention is as follows:
In forward visibility provided by the invention, vehicle traveling information read out instrument and method are by measuring and obtain the position coordinate of driver's eyes and front vehicles, the front vehicles that calculating driver's eyes is seen through front windshield glass is in the position of the picture of front windshield glass position, and directly in real time show the speed (or relative velocity) of front vehicles in this position, distance and with the relative velocity of the two cars front vehicles driving information of how long can overtaking other vehicles etc., chaufeur can be adjusted the driving situation of self in time according to these information, reduce the incidence of traffic accident, further improve the drive safety of chaufeur.
Accompanying drawing explanation
Vehicle traveling information display device structure schematic diagram in a kind of forward visibility that Fig. 1 provides for the embodiment of the present invention;
Vehicle traveling information display method diagram of circuit in a kind of forward visibility that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 surveys and the diagram of circuit of the coordinate of definite driver's eyes in space coordinates in S2;
Fig. 4 surveys and the diagram of circuit of the coordinate of definite front target vehicle in space coordinates in S2;
[major part nomenclature]
1, transparent demonstration film;
2, the first camera;
3, second camera;
4, graphics processing unit;
5, radar;
6, control unit.
The specific embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Be illustrated in figure 1 vehicle traveling information display device structure schematic diagram in a kind of forward visibility that the embodiment of the present invention provides, as shown in FIG., this device comprises: transparent demonstration film 1, the first camera 2, second camera 3, graphics processing unit 4, radar 5 and control unit 6.Control unit 6 is connected with transparent demonstration film 1, the first camera 2, second camera 3, graphics processing unit 4, radar 5 respectively, and the first camera 2, second camera 3 and control unit 6 graphics processing units 4 are connected.
Transparent demonstration film 1 is affixed on shield glass.
The first camera 2 and second camera 3 are arranged at the interior chaufeur of car front side, be respectively used to aim at driver's eyes 8 and carry out image acquisition, the first image obtaining is sent to graphics processing unit 4 by the first camera 2, and the second image obtaining is sent to graphics processing unit 4 by second camera 3.
Graphics processing unit 4 is for the treatment of the first image and the second image, eyes 8 session numbers that obtain the first camera 2 and chaufeur according to this and the eyes 8 line Data Concurrents of second camera 3 and chaufeur give control unit 6.
Radar 5 is arranged on vehicle, for measuring distance and the angle of front target vehicle 9 and this car and take off data being sent to control unit 6.
Control unit 6 is for controlling connected component working, determine the position of the picture of front target vehicle 9 on front windshield according to the data of receiving, and for example, show this front target vehicle 9 driving informations in the relevant position of transparent demonstration film 1 (shown in Fig. 1 mid point 7).
Particularly, control unit 6 is set up space coordinates take any point in car as initial point in advance, for example cartesian coordinate system, determines the surface equation of front windshield in these space coordinates (being also same thereby be arranged at transparent demonstration film 1 on the front windshield surface equation in these space coordinates); And according to eyes 8 session numbers of the first camera 2 of receiving and chaufeur according to this and eyes line 8 data of second camera 3 and chaufeur in these space coordinates, establish out equation of straight line of two monobasics, i.e. the first camera 2 and the line equation of driver's eyes 8 and the eyes 8 line equations of second camera 3 and chaufeur, calculate the intersection point of these two straight lines, this intersection point is eyes 8 positions of chaufeur, thereby can determine the coordinate of driver's eyes 8 in space coordinates; And determine the coordinate of front target vehicle 9 in space coordinates according to front target vehicle 9 and distance and the angle of this car; Finally determine the position of the picture of front target vehicle 9 on front windshield according to the coordinate in driver's eyes 8 and the each comfortable space coordinates of front target vehicle 9 and the surface equation of front windshield in these space coordinates.
Preferably, the first camera 2 and second camera 3 are arranged on meter panel of motor vehicle.
Preferably, radar 5 is arranged at vehicle intake grid position.
Preferably, target vehicle 9 driving informations in front comprise that the relative position in space coordinates changes front vehicle speed/relative this vehicle speed of calculating, and this spacing and expect passing time information with this car according to this car in certain Measuring Time for control unit 6.
Figure 2 shows that vehicle traveling information display method diagram of circuit in a kind of forward visibility that the embodiment of the present invention provides, the method comprises the following steps:
S1: to set up space coordinates when any point in front truck as initial point, and determine when the surface equation of vehicle in front front windshield in these space coordinates;
S2: survey and coordinate and the front target vehicle coordinate in space coordinates of definite driver's eyes in space coordinates;
S3: the coordinate according to driver's eyes in space coordinates and the coordinate of front target vehicle in space coordinates, calculate driver's eyes and the line equation of front target vehicle in space coordinates;
S4: the line equation in space coordinates according to driver's eyes and front target vehicle, and when the surface equation of vehicle in front front windshield in these space coordinates, determine the position of front target vehicle at the picture when on vehicle in front front windshield;
S5: target vehicle is at demonstration front, the position target vehicle driving information of the picture when on vehicle in front front windshield forwardly.
Preferably, Figure 3 shows that and in the S2 of Fig. 2, survey and the diagram of circuit of the coordinate of definite driver's eyes in space coordinates, comprising:
S31: with being arranged at first, second image that obtains driver's eyes present position when first, second camera of diverse location in vehicle in front;
S32: the first image is carried out image processing and obtained the eyes line data of the first camera and chaufeur, the second image is carried out image processing and obtained the eyes line data of second camera and chaufeur;
S33: according to the eyes session number of the first camera and chaufeur according to this and the eyes line data of second camera and chaufeur, calculate the eyes line of the first camera and chaufeur and the intersecting point coordinate of the eyes line of second camera and chaufeur in space coordinates, and using this intersection point as driver's eyes the coordinate in space coordinates.
Preferably, Figure 4 shows that and in the S2 of Fig. 2, survey and the diagram of circuit of the coordinate of definite front target vehicle in space coordinates, comprising:
S41: when radar is set in vehicle in front, adopt distance and the angle of this radar surveying front target vehicle and this car;
S42: determine the coordinate of front target vehicle in space coordinates according to the distance of front target vehicle and this car and angle.
Preferably, in S5, front target vehicle driving information comprises: the relative position according to the front target vehicle of radar surveying in certain Measuring Time and this car in space coordinates changes, this vehicle speed of the front vehicle speed that calculates/relatively, with this spacing and expection passing time information.
Preferably, in above-mentioned any method, before step S5, also comprise step: when transparent demonstration film is set on vehicle in front front windshield.Now S5 comprises: transparent demonstration film, with front target vehicle at identical demonstration front, the position target vehicle driving information in the position when picture on vehicle in front front windshield.
In forward visibility provided by the invention, vehicle traveling information read out instrument and method are by measuring and obtain the position coordinate of driver's eyes and front vehicles, the front vehicles that calculating driver's eyes is seen through front windshield glass is in the position of the picture of front windshield glass position, and directly show the speed (or relative velocity) of front vehicles in this position, distance and with the relative velocity of the two cars front vehicles driving information of how long can overtaking other vehicles etc., chaufeur can be adjusted the driving situation of self in time according to these information, reduce the incidence of traffic accident, further improve the drive safety of chaufeur, have great practical value.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a vehicle traveling information read out instrument in forward visibility, is characterized in that, comprising:
Be affixed on the transparent demonstration film on shield glass;
Be arranged at the first camera and the second camera of chaufeur front side in car, be respectively used to aim at driver's eyes and carry out image acquisition, the first image obtaining is sent to graphics processing unit by the first camera, and the second image obtaining is sent to graphics processing unit by second camera;
The graphics processing unit being connected with described first, second camera, for the treatment of described the first image and the second image, the eyes session number that obtains the first camera and chaufeur according to this and the eyes line Data Concurrent of second camera and chaufeur give control unit;
Be arranged at the radar on vehicle, measure distance and the angle of front target vehicle and this car and take off data is sent to control unit;
The control unit being electrically connected respectively with described transparent demonstration film, the first camera, second camera, graphics processing unit and radar, be used for controlling connected component working, determine the position of the picture of front target vehicle on front windshield according to the data of receiving, and at this front target vehicle driving information of this position display of described transparent demonstration film.
2. vehicle traveling information read out instrument in forward visibility as claimed in claim 1, it is characterized in that, described control unit is set up space coordinates take any point in car as initial point in advance, determine the surface equation of described front windshield in these space coordinates, and according to the eyes session number of the first camera of receiving and chaufeur according to this and the eyes line data of second camera and chaufeur determine the coordinate of driver's eyes in described space coordinates, and determine the coordinate of front target vehicle in described space coordinates according to the distance of front target vehicle and this car and angle, finally determine the position of the picture of front target vehicle on front windshield according to the coordinate in described driver's eyes and the described space coordinates of the each leisure of front target vehicle and the surface equation of front windshield in these space coordinates.
3. vehicle traveling information read out instrument in forward visibility as claimed in claim 2, is characterized in that, described the first camera and second camera are arranged on meter panel of motor vehicle.
4. vehicle traveling information read out instrument in forward visibility as claimed in claim 2, is characterized in that, described radar is arranged at vehicle intake grid position.
5. vehicle traveling information read out instrument in forward visibility as claimed in claim 2, it is characterized in that, described front target vehicle driving information comprises that the relative position in described space coordinates changes front vehicle speed/relative this vehicle speed of calculating, and this spacing and expect passing time information to control unit with this car according to this car in certain Measuring Time.
6. a vehicle traveling information display method in forward visibility, is characterized in that, comprises the following steps:
Step 1: to set up space coordinates when any point in front truck as initial point, and determine when the surface equation of vehicle in front front windshield in these space coordinates;
Step 2: survey and coordinate and the front target vehicle coordinate in described space coordinates of definite driver's eyes in described space coordinates;
Step 3: the coordinate according to driver's eyes in described space coordinates and the coordinate of front target vehicle in described space coordinates, calculate driver's eyes and the line equation of front target vehicle in described space coordinates;
Step 4: the line equation in described space coordinates according to driver's eyes and front target vehicle, and when the surface equation of vehicle in front front windshield in these space coordinates, determine the position of front target vehicle at the picture when on vehicle in front front windshield;
Step 5: demonstration front, the position target vehicle driving information at described front target vehicle at the picture when on vehicle in front front windshield.
7. vehicle traveling information display method in forward visibility as claimed in claim 6, is characterized in that, in described step 2, surveys and the coordinate of definite driver's eyes in described space coordinates, comprising:
With being arranged at first, second image that obtains driver's eyes present position when first, second camera of diverse location in vehicle in front;
The first image is carried out image processing and obtained the eyes line data of the first camera and chaufeur, the second image is carried out image processing and obtained the eyes line data of second camera and chaufeur;
According to the eyes session number of the first camera and chaufeur according to this and the eyes line data of second camera and chaufeur, calculate the eyes line of the first camera and chaufeur and the intersecting point coordinate of the eyes line of second camera and chaufeur in described space coordinates, and using this intersection point as driver's eyes the coordinate in described space coordinates.
8. vehicle traveling information display method in forward visibility as claimed in claim 6, is characterized in that, in described step 2, surveys and the coordinate of definite front target vehicle in described space coordinates, comprising:
When radar is set in vehicle in front, adopt distance and the angle of this radar surveying front target vehicle and this car;
Determine the coordinate of front target vehicle in described space coordinates according to the distance of front target vehicle and this car and angle.
9. vehicle traveling information display method in forward visibility as claimed in claim 8, it is characterized in that, the target vehicle driving information of front described in step 5 comprises: the relative position according to the front target vehicle of described radar surveying in certain Measuring Time and this car in described space coordinates changes, this vehicle speed of the front vehicle speed that calculates/relatively, with this spacing and expection passing time information.
10. vehicle traveling information display method in the forward visibility as described in claim 6 to 9 any one, is characterized in that, before described step 5, also comprises step: when transparent demonstration film is set on vehicle in front front windshield;
Described step 5 comprises: described transparent demonstration film, with described front target vehicle at identical demonstration front, the position target vehicle driving information in the position when picture on vehicle in front front windshield.
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| CN201410162650.6A CN103895572B (en) | 2014-04-22 | 2014-04-22 | Vehicle traveling information display unit and method in a kind of field of front vision |
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