CN107571797A - Head-up display method and system for driving information of front vehicle - Google Patents

Abstract

The invention discloses a head-up display method and a system for driving information of a front vehicle, wherein the method comprises the following steps: detecting whether a running vehicle exists in a preset area in front of a current vehicle, if so, determining the position of the running vehicle relative to the current vehicle, detecting running information of the running vehicle relative to the current vehicle, wherein the running information comprises the running speed and/or distance of the running vehicle relative to the current vehicle, then detecting the position of eyes of a driver in the current vehicle relative to the current vehicle, determining a projection area on the surface of a front windshield of the current vehicle according to the eyes of the driver and the position of the running vehicle relative to the current vehicle, and projecting the running information into the projection area. The invention can project the running information of the front vehicle relative to the vehicle to the front windshield, so that the driver can accurately know the running information of the front vehicle according to the projected image on the front windshield on the premise of not influencing the sight of the driver.

Description

Method and system for head-up display of driving information of preceding vehicle

technical field

The invention relates to the technical field of head-up display of automobiles, in particular to a method and system for head-up display of driving information of a preceding vehicle.

Background technique

With the development of science and technology, head-up display (HUD, Head Up Display) systems are increasingly used in automobiles. The head-up display system on the car can display important driving information, such as speed, engine speed, fuel consumption, tire pressure, navigation and information of external smart devices in the driver's field of vision on the front windshield in real time, so that driving The driver can see the driving information without bowing his head, so as to avoid distracting the road ahead; at the same time, the driver does not have to adjust his eyes between observing the distant road and the nearby instrument, which can avoid eye fatigue and greatly improve the Enhance driving safety and improve driving experience.

In addition, in the process of driving, the vehicle follows the vehicle in most cases, and following the vehicle too closely is the main cause of rear-end collision accidents. As the rear car, you should keep a certain safe distance from the front car to avoid accidents due to insufficient braking in emergency situations. Among them, the law stipulates that when a motor vehicle is driving on the expressway, when the speed exceeds 100 kilometers per hour, the safe distance between vehicles is more than 100 meters; when the speed is lower than 100 kilometers per hour, the minimum safe distance between vehicles must not be less than 50 meters.

At present, the existing head-up display system can only display the driving information of the own vehicle, and the driver cannot view the driving information of the vehicle in front from the head-up display system at any time, and can only judge whether the following distance is greater than the safe distance by feeling; in addition , In daily driving, the driver cannot accurately judge the speed of the vehicle in front through human eyes, so it is difficult to determine whether to increase the following distance.

Contents of the invention

The main purpose of the present invention is to provide a head-up display method and system for the driving information of the vehicle in front, aiming at solving the problem that the head-up display system in the prior art can only display the driving information of the own vehicle, and the driver cannot view it from the head-up display system at any time A technical problem with the driving information of the vehicle in front.

In order to achieve the above purpose, the first aspect of the embodiment of the present invention provides a head-up display method for the driving information of the preceding vehicle, the method comprising:

Detect whether there is a driving vehicle in the preset area in front of the current vehicle;

When there is a traveling vehicle in the preset area, then determine the position of the traveling vehicle relative to the current vehicle, and detect the traveling information of the traveling vehicle relative to the current vehicle, the traveling information includes the traveling information of the traveling vehicle relative to the current vehicle the current speed and/or distance traveled by the vehicle;

Detect the position of the driver's eyes relative to the current vehicle in the current vehicle, and determine the projection area on the front windshield surface of the current vehicle according to the driver's eyes and the position of the driving vehicle relative to the current vehicle. The front windshield The glass surface is covered with a holographic projection film;

The traveling information of the traveling vehicle relative to the current vehicle is projected into the projection area.

Optionally, the step of determining the projection area on the front windshield surface of the current vehicle according to the driver's eyes and the position of the driving vehicle relative to the current vehicle includes:

Taking the position of the eyes relative to the current vehicle as the human eye positioning point, and using the position of the driving vehicle relative to the current vehicle as the vehicle positioning point;

Determining the intersection of the line connecting the human eye positioning point and the vehicle positioning point with the surface of the front windshield;

The area where the intersection point is located is taken as the projection area.

Optionally, the step of detecting the position of the eyes of the driver in the current vehicle relative to the current vehicle comprises:

The positions of the left eye and the right eye of the driver in the current vehicle relative to the current vehicle are respectively detected.

Optionally, the step of determining the projection area on the front windshield surface of the current vehicle according to the driver's eyes and the position of the driving vehicle relative to the current vehicle includes:

Taking the position of the driver's left eye relative to the current vehicle as the left eye anchor point, taking the position of the driver's right eye relative to the current vehicle as the right eye anchor point, and setting the driving vehicle relative to the current vehicle The position of the vehicle is used as the positioning point;

Determine the first intersection point between the line connecting the left eye positioning point and the vehicle positioning point and the front windshield surface, and the connection line between the right eye positioning point and the vehicle positioning point and the front windshield surface second intersection;

The area where the first intersection point is located is used as a left image projection area, and the area where the second intersection point is located is used as a right image projection area.

Optionally, the step of projecting the driving information of the driving vehicle relative to the current vehicle into the projection area includes:

Based on the driving information of the driving vehicle relative to the current vehicle, a left projection image and a right projection image are generated, wherein the left projection image matches the left lens of the 3D glasses worn by the driver, and the right projection image matches the left lens of the 3D glasses worn by the driver. The right lens of the 3D glasses matches;

The left projection image is projected to the left image projection area, and the right projection image is projected to the right image projection area.

In order to achieve the above purpose, the second aspect of the embodiment of the present invention provides a head-up display system for driving information of the vehicle in front, the system includes: a vehicle, a holographic projection film, a human eye recognition camera, a front vehicle recognition camera, a detection sensor and a projection device;

The holographic projection film is covered on the front windshield surface of the vehicle;

The human eye recognition camera is arranged inside the cab of the vehicle, and its lens is aimed at the driver's face for detecting the position of the driver's eyes in the vehicle relative to the vehicle;

The front vehicle recognition camera is arranged on the vehicle, and is used to detect whether there is a driving vehicle in a preset area in front of the vehicle;

The detection sensor is arranged on the vehicle, and is used to detect the driving information of the driving vehicle relative to the vehicle when there is a driving vehicle in the preset area in front of the vehicle, and the driving information includes the driving vehicle speed and/or distance traveled relative to said vehicle;

The projection device is arranged inside the vehicle, and is connected with the human eye recognition camera, the front vehicle recognition camera and the detection sensor, and is used to position, determine a projection area on the surface of the front windshield, and project the driving information of the driving vehicle relative to the vehicle into the projection area.

Optionally, the projection device is used for:

Taking the position of the driver's eyes relative to the vehicle as the human eye positioning point, and using the position of the driving vehicle relative to the vehicle as the vehicle positioning point;

Determining the intersection of the line connecting the human eye positioning point and the vehicle positioning point with the surface of the front windshield;

The area where the intersection point is located is taken as the projection area.

Optionally, the eye recognition camera is used for:

Positions of a driver's left eye and right eye in the vehicle relative to the vehicle are respectively detected.

Optionally, the projection device is used for:

Taking the position of the driver's left eye relative to the vehicle as the left eye anchor point, taking the position of the driver's right eye relative to the vehicle as the right eye anchor point, and setting the driving vehicle relative to the position of the vehicle as a vehicle anchor point;

Determine the first intersection point between the line connecting the left eye positioning point and the vehicle positioning point and the front windshield surface, and the connection line between the right eye positioning point and the vehicle positioning point and the front windshield surface second intersection;

The area where the first intersection point is located is used as a left image projection area, and the area where the second intersection point is located is used as a right image projection area.

Optionally, the system also includes 3D glasses, and the projection device is used for:

generating a left projection image and a right projection image based on the traveling information of the traveling vehicle relative to the current vehicle;

projecting the left projection image to the left image projection area, and projecting the right projection image to the left image projection area and right image projection area, wherein the 3D glasses are worn by the driver, and the 3D The left lens of the glasses is matched to the left projected image, and the right lens of the 3D glasses is matched to the right projected image.

The present invention provides a head-up display method for the driving information of the vehicle in front, the method includes: detecting whether there is a driving vehicle in the preset area in front of the current vehicle, if there is, determining the position of the driving vehicle relative to the current vehicle, and detecting the driving The driving information of the vehicle relative to the current vehicle, the driving information includes the driving speed and/or distance of the above-mentioned driving vehicle relative to the current vehicle, and then detects the position of the driver's eyes in the current vehicle relative to the current vehicle, according to the driver's eyes and For the position of the driving vehicle relative to the current vehicle, a projection area is determined on the front windshield surface of the current vehicle, and the above driving information is projected into the projection area. Compared with the prior art, in the present invention, since the above-mentioned front windshield is covered with a holographic projection film, the driving information of the vehicle in front relative to the own vehicle can be projected on the front windshield, and the driver's eyes, The projected image and the position of the vehicle in front can be kept in the same line of sight, so the driver can accurately understand the driving information of the vehicle in front according to the projected image on the front windshield without affecting the driver's line of sight.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without creative work.

Fig. 1 is a schematic flow chart of a head-up display method for driving information of a vehicle in front in the first embodiment of the present invention;

FIG. 2 is a schematic flow chart of the refinement steps of step 103 in the first embodiment of the present invention;

FIG. 3 is a schematic diagram of a scene where the projection area is determined on the front windshield surface of the current vehicle in the first embodiment of the present invention;

FIG. 4 is a schematic flow chart of the refinement steps of step 103 in the second embodiment of the present invention;

FIG. 5 is a schematic diagram of a scene where a projection area is determined on the front windshield surface of a current vehicle in the second embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a head-up display system for the driving information of the preceding vehicle in the third embodiment of the present invention.

detailed description

In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1, Fig. 1 is a schematic flow chart of the head-up display method for the driving information of the vehicle in front in the first embodiment of the present invention. In the first embodiment of the present invention, the method for displaying the head-up display of the driving information of the preceding vehicle includes:

Step 101, detecting whether there is a driving vehicle in the preset area in front of the current vehicle;

In the embodiment of the present invention, the front vehicle recognition camera installed on the current vehicle can be used to collect images in the preset area in front of the current vehicle, and then image recognition technology can be used to determine whether there is a driving vehicle in the preset area in front of the current vehicle.

Wherein, the aforementioned preset area is a fan-shaped area with a certain angle and radius directly in front of the current vehicle driving direction, for example, a fan-shaped area with a radius of 200 m in front of the current vehicle.

Step 102, when there is a driving vehicle in the preset area, determine the position of the driving vehicle relative to the current vehicle, and detect the driving information of the driving vehicle relative to the current vehicle, the driving information includes the driving The speed and/or distance traveled by the vehicle relative to the current vehicle;

In the embodiment of the present invention, when there is a driving vehicle in the preset area, the position of the driving vehicle relative to the current vehicle is determined according to the image recognition technology. For example, the above-mentioned front vehicle recognition camera can be used to acquire a depth image in a preset area in front of the current vehicle, and then the position of the above-mentioned driving vehicle relative to the current vehicle can be determined according to the depth information of the depth image.

At the same time, the detection sensor installed on the current vehicle is used to detect the traveling information of the above-mentioned traveling vehicle relative to the current vehicle. For example: Utilize the ranging speed measuring sensor installed on the current vehicle to detect the driving speed or distance of the above-mentioned driving vehicle relative to the current vehicle, or, utilize the ranging speed measuring sensor installed on the current vehicle to simultaneously detect the distance of the above-mentioned driving vehicle relative to the current vehicle Travel speed and distance.

Among them, the distance measuring speed sensor is an instrument that can measure the distance and speed of the object. It can use the time difference between emitting and receiving the laser beam to measure the distance to the object to be measured. Laser distance measurement with a specific time interval, to obtain the moving distance of the measured object within the time interval, so as to obtain the moving speed of the measured object.

Step 103: Detect the position of the driver's eyes relative to the current vehicle in the current vehicle, and determine the projection area on the front windshield surface of the current vehicle according to the driver's eyes and the position of the driving vehicle relative to the current vehicle. The surface of the front windshield is covered with a holographic projection film;

In the embodiment of the present invention, the face recognition camera installed in the current vehicle is used to capture the driver's face image, and then the position of the driver's eyes relative to the current vehicle is detected.

Wherein, after detecting the position of the driver's eyes relative to the current vehicle in the current vehicle, the projection area can be determined on the front windshield surface of the current vehicle according to the position of the driver's eyes and the driving vehicle relative to the current vehicle.

Wherein, the holographic projection film covered on the surface of the front windshield is a film capable of clearly displaying projected images in the projection area and maintaining full transparency in the non-projection area.

Further, please refer to FIG. 2. FIG. 2 is a schematic flow chart of the detailed steps of step 103 in the first embodiment of the present invention. The step 103 includes:

Step 201, taking the position of the eyes relative to the current vehicle as the human eye positioning point, and taking the position of the driving vehicle relative to the current vehicle as the vehicle positioning point;

Step 202, determine the intersection of the line connecting the human eye positioning point and the vehicle positioning point and the surface of the front windshield;

Step 203, taking the area where the intersection point is located as the projection area.

In order to better understand the embodiment of the present invention, please refer to FIG. 3 , which is a schematic diagram of a scene of determining a projection area on the front windshield surface of a current vehicle in the first embodiment of the present invention.

In Figure 3, the position of the driver's eyes relative to the current vehicle is regarded as the human eye positioning point A, and the position of the driving vehicle relative to the current vehicle is regarded as the vehicle positioning point B, and then the human eye positioning point A and the vehicle positioning point are determined The intersection point C between the line between B and the surface of the front windshield, the area with the preset area where the intersection point C is located is used as the projection area. Wherein, it can be understood that the area of the above-mentioned projection area can be adjusted by the driver according to his own vision, that is, the above-mentioned projection area can be arbitrarily enlarged or reduced.

Step 104: Project the driving information of the driving vehicle relative to the current vehicle into the projection area.

In the embodiment of the present invention, after the front windshield surface of the current vehicle determines the projection area, the projection device installed in the current vehicle can be used to project the driving information of the above-mentioned driving vehicle relative to the current vehicle into the projection area.

Wherein, after projecting the driving information of the above-mentioned driving vehicle relative to the current vehicle to the front windshield of the current vehicle, the position of the driver's eyes relative to the current vehicle and the position of the above-mentioned driving vehicle relative to the current vehicle are still monitored in real time, Then, according to the change of the driver's eyes or the position of the above-mentioned driving vehicle relative to the current vehicle, the projection area of the front windshield surface of the current vehicle is adjusted in real time, so that the driver's eyes, the projection area of the front windshield surface, and the driving vehicle be on the same straight line.

In addition, it can be understood that there may be two or more driving vehicles in the preset area ahead of the current vehicle at the same time. The projection area of the vehicle on the surface of the front windshield, and then project the driving information of each driving vehicle relative to the current vehicle to its corresponding projection area.

The head-up display method for the driving information of the preceding vehicle provided in the embodiment of the present invention includes: detecting whether there is a driving vehicle in the preset area in front of the current vehicle, and if so, determining the position of the driving vehicle relative to the current vehicle, and detecting the relative position of the driving vehicle. Based on the driving information of the current vehicle, the driving information includes the driving speed and/or distance of the above-mentioned driving vehicle relative to the current vehicle, and then detects the position of the driver's eyes in the current vehicle relative to the current vehicle, according to the driver's eyes and the driving vehicle Relative to the position of the current vehicle, a projection area is determined on the front windshield surface of the current vehicle, and the above driving information is projected into the projection area. Compared with the prior art, in the embodiment of the present invention, since the above-mentioned front windshield is covered with a holographic projection film, the driving information of the vehicle in front relative to the own vehicle can be projected onto the front windshield, and the driver's The eyes, projected image, and the position of the vehicle in front can be kept in the same line of sight, so the driver can accurately understand the driving information of the vehicle in front according to the projected image on the front windshield without affecting the driver's line of sight.

Further, based on the first embodiment of the present invention, a second embodiment of the present invention is proposed. In the second embodiment of the present invention, the step of detecting the position of the eyes of the driver in the current vehicle relative to the current vehicle in step 103 includes:

The positions of the left eye and the right eye of the driver in the current vehicle relative to the current vehicle are respectively detected.

In the embodiment of the present invention, the face recognition camera installed in the current vehicle is used to capture the face image of the driver, and then the positions of the driver's left eye and right eye relative to the current vehicle are detected.

Among them, after detecting the position of the driver's left eye and right eye relative to the current vehicle in the current vehicle, according to the driver's left eye and right eye and the position of the driving vehicle relative to the current vehicle, The surface of the windshield determines the projection area.

Specifically, referring to FIG. 4, FIG. 4 is a schematic flow chart of the detailed steps of step 103 in the second embodiment of the present invention. In the embodiment of the present invention, in the above step 103, according to the relative The position of the vehicle, the steps of determining the projection area on the front windshield surface of the current vehicle include:

Step 401: Take the position of the driver's left eye relative to the current vehicle as the left eye anchor point, use the position of the driver's right eye relative to the current vehicle as the right eye anchor point, and set the driving vehicle relative to Use the current vehicle position as the vehicle positioning point;

Step 402: Determine the first intersection point between the line connecting the left eye anchor point and the vehicle anchor point and the surface of the front windshield, and the line connecting the right eye anchor point and the vehicle anchor point and the front windshield the second intersection point of the glass surface;

Step 403: Use the area where the first intersection point is located as a left image projection area, and use the area where the second intersection point is as a right image projection area.

In order to better understand the embodiment of the present invention, please refer to FIG. 5 , which is a schematic diagram of a scene of determining a projection area on the front windshield surface of a current vehicle in the second embodiment of the present invention. In Fig. 5, the position of the driver's left eye relative to the current vehicle is taken as the left eye anchor point D, the position of the driver's right eye relative to the current vehicle is taken as the right eye anchor point E, and the position of the driving vehicle relative to the current vehicle is The position of the vehicle is taken as the vehicle positioning point F, and then the first intersection point G between the line connecting the left eye positioning point D and the vehicle positioning point F and the surface of the front windshield, and the connection line between the right eye positioning point E and the vehicle positioning point F are determined The second point of intersection H with the front windshield surface. Then, the areas where the first intersection point G and the second intersection point H are located are respectively used as the left image projection area and the right image projection area.

Further, in step 104 above, the step of projecting the driving information of the driving vehicle relative to the current vehicle into the projection area includes:

Based on the driving information of the driving vehicle relative to the current vehicle, a left projection image and a right projection image are generated, wherein the left projection image matches the left lens of the 3D glasses worn by the driver, and the right projection image matches the left lens of the 3D glasses worn by the driver. The right lens of the 3D glasses matches;

The left projection image is projected to the left image projection area, and the right projection image is projected to the right image projection area.

In the embodiment of the present invention, after the left image projection area and the right image projection area are determined on the front windshield surface of the current vehicle, the generated left projection image and right projection image can be respectively generated by the projection device installed in the current vehicle. Projected into the left image projection area and the right image projection area.

Specifically, 3D projection technology can be used to generate two left and right projection images with parallax according to the driving information of the above-mentioned driving vehicle relative to the current vehicle, and then project them into the above-mentioned left image projection area and right image projection area respectively. . Wherein, the driver can view the driving information of the above-mentioned driving vehicle relative to the current vehicle by wearing 3D glasses matched with the projection device.

Wherein, since the projected image seen by the driver through the 3D glasses is a 3D image, the projected image seen by the driver will overlap with the above-mentioned driving vehicle. Moreover, since the projection areas of the left projection image and the right projection image are different, the driver's visual error can be effectively eliminated, so that the projection image observed by the driver on the front windshield always overlaps with the driving vehicle. In addition, the projected image seen by the driver through the 3D glasses can also maintain the same visual depth as the above-mentioned driving vehicle seen by the driver, that is, the distance between the projected image seen by the driver and the above-mentioned driving vehicle and the driver's eyes is the same .

Wherein, after projecting the driving information of the above-mentioned driving vehicle relative to the current vehicle to the front windshield of the current vehicle, the position of the driver's left eye and right eye relative to the current vehicle and the position of the above-mentioned driving vehicle relative to the current vehicle are still monitored in real time. The position of the vehicle, and then adjust the left image projection area and the right image projection area of the front windshield surface of the current vehicle in real time according to the change of the driver's left eye and right eye or the position of the above-mentioned driving vehicle relative to the current vehicle, so that the driving The driver's left eye, the left image projection area on the front windshield surface, and the driving vehicle can always be on the same straight line, and at the same time, the driver's right eye, the right image projection area on the front windshield surface, and the driving vehicle can also always be on the same straight line. on the same straight line.

In addition, it can be understood that there may be two or more driving vehicles in the preset area ahead of the current vehicle at the same time. In the projection area on the surface of the front windshield, the driving information of each driving vehicle relative to the current vehicle is projected to its own corresponding projection area.

The head-up display method for the driving information of the vehicle in front provided by the embodiment of the present invention determines the left image projection area and the right image projection area, and then based on the driving information of the driving vehicle in the preset area in front of the current vehicle relative to the current vehicle, generate a left projection image and a right projection image, and project them into the above-mentioned left image projection area and right image projection area respectively, driving By wearing 3D glasses matching with the projection device, the driver can view the driving information of the above-mentioned driving vehicle relative to the current vehicle on the surface of the front windshield, and the driving information observed by the driver on the front windshield surface can be compared with the above-mentioned Driving vehicles always keep overlapping, avoiding possible visual errors.

Furthermore, the present invention also provides a head-up display system for the driving information of the vehicle in front. Referring to FIG. 6 , FIG. 6 is a schematic structural diagram of the head-up display system for the driving information of the vehicle in front in the third embodiment of the present invention. The above-mentioned system includes: a vehicle 10, a holographic Projection film 20, human eye recognition camera 30, front vehicle recognition camera (not marked), detection sensor (not marked) and projection device 40;

Wherein, the holographic projection film 20 is a film that can clearly display the projected image in the projected area and maintain full transparency in the non-projected area, covering the surface of the front windshield of the vehicle 10 .

The human eye recognition camera 30 is arranged inside the cab of the vehicle 10, and its lens is aimed at the face of the driver, for detecting the position of the driver's eyes in the vehicle 10 relative to the vehicle 10;

In the embodiment of the present invention, the face recognition camera 30 is used to capture the face image of the driver, and then the position of the driver's eyes relative to the vehicle 10 is detected.

The front vehicle recognition camera is arranged on the vehicle 10, and is used to detect whether there is a driving vehicle 50 in the preset area in front of the vehicle 10;

In the embodiment of the present invention, the front vehicle recognition camera collects images in the preset area in front of the vehicle 10, and then judges whether there is a driving vehicle 50 in the preset area in front of the vehicle 10 through image recognition technology. Wherein, the aforementioned preset area is a fan-shaped area with a certain angle and radius directly in front of the vehicle 10 in the driving direction, for example, a fan-shaped area with a radius of 200 m in front of the vehicle 10 .

The above-mentioned detection sensor is arranged on the vehicle 10, and is used for detecting the traveling information of the traveling vehicle 50 relative to the vehicle 10 when there is a traveling vehicle 50 in the preset area in front of the vehicle 10, and the traveling information includes the traveling information of the traveling vehicle 50 relative to the the speed and/or distance traveled by the vehicle;

In the embodiment of the present invention, when there is a driving vehicle 50 in the preset area, the position of the driving vehicle 50 relative to the vehicle 10 is determined according to the image recognition technology. For example, the above-mentioned front vehicle recognition camera can be used to acquire a depth image in a preset area in front of the vehicle 10 , and then the position of the driving vehicle 50 relative to the vehicle 10 can be determined according to the depth information of the depth image.

At the same time, the traveling information of the traveling vehicle 50 relative to the vehicle 10 is detected by a detection sensor installed on the vehicle 10 . For example: utilize the distance measuring speed sensor installed on the vehicle 10 to detect the traveling speed or distance of the traveling vehicle 50 relative to the vehicle 10, or utilize the above distance measuring speed sensor to simultaneously detect the traveling speed and the distance of the traveling vehicle 50 relative to the vehicle 10.

Among them, the distance measuring speed sensor is an instrument that can measure the distance and speed of the object. It can use the time difference between emitting and receiving the laser beam to measure the distance to the object to be measured. Laser distance measurement with a specific time interval to obtain the moving distance of the measured object within the time interval, so as to obtain the moving speed of the measured object.

The projection device 40 is arranged inside the vehicle 10, and is connected with the human eye recognition camera 30, the front vehicle recognition camera and the detection sensor, and is used to screen the above-mentioned front windshield according to the driver's eyes and the position of the driving vehicle 50 relative to the vehicle 10. The glass surface defines a projection area, and projects the traveling information of the traveling vehicle 50 relative to the vehicle 10 into the projection area.

Further, the above projection device 40 is used for:

Taking the position of the driver's eyes relative to the vehicle as the human eye positioning point, and using the position of the driving vehicle 50 relative to the vehicle as the vehicle positioning point;

Determining the intersection of the line connecting the human eye positioning point and the vehicle positioning point with the surface of the front windshield;

The area where the intersection point is located is taken as the projection area.

Wherein, after the driving information of the driving vehicle 50 relative to the vehicle 10 is projected onto the front windshield of the vehicle 10, the position of the driver's eyes relative to the vehicle 10 and the position of the driving vehicle 50 relative to the current vehicle 10 are still monitored in real time. , and then adjust the projected area of the front windshield surface of the vehicle 10 in real time according to the change of the driver's eyes or the position of the driving vehicle 50 relative to the vehicle 10, so that the driver's eyes, the projected area of the front windshield surface, the driving The vehicles 50 can be located on the same straight line.

In addition, it can be understood that there may be two or more driving vehicles in the preset area ahead of the vehicle 10 at the same time. In this case, each driving vehicle is determined according to the position of each driving vehicle relative to the vehicle 10. The projection area of the vehicle on the surface of the front windshield, and then project the driving information of each driving vehicle relative to the vehicle 10 to its corresponding projection area.

The head-up display system for the driving information of the vehicle in front provided by the embodiment of the present invention includes: a vehicle 10, a holographic projection film 20, a human eye recognition camera 30, a front vehicle recognition camera 40, a detection sensor and a projection device 40; compared with the prior art In other words, in the embodiment of the present invention, since the above-mentioned front windshield is covered with a holographic projection film, the driving information of the vehicle in front relative to the own vehicle can be projected on the front windshield, and the eyes of the driver, the projected image, the vehicle in front The position of the vehicle can be kept in the same line of sight, so the driver can accurately understand the driving information of the vehicle in front according to the projected image on the front windshield without affecting the driver's line of sight.

Further, based on the third embodiment of the present invention, a fourth embodiment of the present invention is proposed. In the fourth embodiment of the present invention, the above-mentioned human eye recognition camera 30 is used for:

The positions of the left eye and the right eye of the driver in the vehicle 10 relative to the vehicle 10 are respectively detected.

In the embodiment of the present invention, the face recognition camera 30 is used to capture the face image of the driver, and then the positions of the driver's left eye and right eye relative to the vehicle 10 are detected.

Wherein, after detecting the position of the driver's left eye and right eye relative to the vehicle 10 in the vehicle 10, the position of the driver's left eye and right eye and the driving vehicle 50 relative to the vehicle 10 can be determined in the position of the vehicle 10. The surface of the front windshield defines the projection area.

Specifically, the above projection device 40 is used for:

Taking the position of the driver's left eye relative to the vehicle as the left eye anchor point, taking the position of the driver's right eye relative to the vehicle as the right eye anchor point, and setting the driving vehicle relative to the position of the vehicle as a vehicle anchor point;

Determine the first intersection point between the line connecting the left eye positioning point and the vehicle positioning point and the front windshield surface, and the connection line between the right eye positioning point and the vehicle positioning point and the front windshield surface second intersection;

The area where the first intersection point is located is used as a left image projection area, and the area where the second intersection point is located is used as a right image projection area.

Further, the above-mentioned system also includes 3D glasses, and the above-mentioned projection device 40 is used for:

generating a left projection image and a right projection image based on the traveling information of the traveling vehicle relative to the current vehicle;

projecting the left projection image to the left image projection area, and projecting the right projection image to the left image projection area and right image projection area, wherein the 3D glasses are worn by the driver, and the 3D The left lens of the glasses is matched to the left projected image, and the right lens of the 3D glasses is matched to the right projected image.

In the embodiment of the present invention, after the left image projection area and the right image projection area are determined on the front windshield surface of the vehicle 10, the projection device 40 installed in the vehicle 10 can be used to convert the generated left projection image and right projection image They are respectively projected into the left image projection area and the right image projection area.

Specifically, 3D projection technology can be used to generate two left and right projection images with parallax according to the driving information of the driving vehicle 50 relative to the vehicle 10, and then project them into the above-mentioned left image projection area and right image projection area respectively. . Wherein, the driver can view the driving information of the driving vehicle 50 relative to the vehicle 10 by wearing 3D glasses matched with the projection device 40 .

It can be understood that, since the projected image seen by the driver through the 3D glasses is a 3D image, the projected image seen by the driver will overlap with the driving vehicle 50 . Moreover, since the projection areas of the left projection image and the right projection image are different, visual errors can be effectively eliminated, so that the projection image observed by the driver on the front windshield always overlaps with the driving vehicle 50 . In addition, the projected image seen by the driver through the 3D glasses can also maintain the same visual depth as the above-mentioned driving vehicle seen by the driver, that is, the distance between the projected image seen by the driver and the above-mentioned driving vehicle and the driver's eyes is the same .

Wherein, after the driving information of the driving vehicle 50 relative to the vehicle 10 is projected onto the front windshield of the vehicle 10, the position of the driver's left eye and right eye relative to the vehicle 10 and the relative position of the driving vehicle 50 relative to the vehicle 10 are still monitored in real time. 10, and then adjust the left image projection area and the right image projection area of the front windshield surface of the vehicle 10 in real time according to the change of the driver's left eye and right eye or the position of the driving vehicle 50 relative to the vehicle 10, so that the driving The driver's left eye, the left image projection area on the front windshield surface, and the driving vehicle 50 can always be on the same straight line, and at the same time make the driver's right eye, the right image projection area on the front windshield surface, and the driving vehicle 50 also can always lie on the same straight line.

In addition, it can be understood that there may be two or more driving vehicles in the preset area in front of the vehicle 10 at the same time. In the projection area on the surface of the front windshield, the driving information of each driving vehicle relative to the vehicle 10 is projected to its own corresponding projection area.

In the head-up display system for driving information of the vehicle in front provided in the embodiment of the present invention, the projection device 40 determines the left image on the front windshield surface of the vehicle 10 according to the driver's left eye and right eye and the position of the driving vehicle 50 relative to the vehicle 10 The projection area and the right image projection area, and then based on the driving information of the vehicle 50 in the preset area in front of the vehicle 10 relative to the vehicle 10, a left projection image and a right projection image are generated and projected to the left image projection area and the right image respectively In the projection area, the driver can view the driving information of the driving vehicle 50 relative to the vehicle 10 on the surface of the front windshield by wearing 3D glasses matched with the projection device, and the driver observes the information on the front windshield surface. The driving information can always keep overlapping with the driving vehicle 50, avoiding possible visual errors.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or modules may be in electrical, mechanical or other forms.

The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or may be distributed to multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, each module may exist separately physically, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.

If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes.

It should be noted that, for the sake of simplicity of description, the aforementioned method embodiments are expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence. Because of the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

The above is a description of the head-up display method and system for the driving information of the vehicle in front provided by the present invention. For those skilled in the art, according to the idea of the embodiment of the present invention, there will be changes in the specific implementation and application range In summary, the contents of this specification should not be construed as limiting the present invention.

Claims (10)

1. a kind of front truck driving information new line display methods, it is characterised in that methods described includes：

Detection Current vehicle front preset whether there is driving vehicle in region；

When the predeterminable area internal memory is in driving vehicle, it is determined that the driving vehicle relative to Current vehicle position, and Detect driving information of the driving vehicle relative to Current vehicle, the driving information includes the driving vehicle relative to working as The travel speed and/or distance of vehicle in front；

The eyes of driver in Current vehicle are detected relative to the position of Current vehicle, according to the eyes and traveling of the driver Vehicle determines view field, the front windshield glass on the front windshield surface of Current vehicle relative to the position of Current vehicle Glass surface is covered with line holographic projections film；

The driving vehicle is projected in the view field relative to the driving information of Current vehicle.

2. according to the method for claim 1, it is characterised in that the eyes and driving vehicle phase according to the driver For the position of Current vehicle, include the step of the front windshield surface of Current vehicle determines view field：

Using the eyes relative to the position of Current vehicle as human eye anchor point, and by the driving vehicle relative to current The position of vehicle is as vehicle location point；

Determine the human eye anchor point and the line of vehicle location point and the intersection point on the front windshield surface；

Using the region where the intersection point as the view field.

3. according to the method for claim 1, it is characterised in that it is described detection Current vehicle in driver eyes relative to The step of position of Current vehicle, includes：

Position of the left eye of driver with right eye relative to Current vehicle in Current vehicle is detected respectively.

4. according to the method for claim 3, it is characterised in that the eyes and driving vehicle phase according to the driver For the position of Current vehicle, include the step of the front windshield surface of Current vehicle determines view field:

Using the left eye of the driver relative to the position of Current vehicle as left eye anchor point, by the right eye phase of the driver For Current vehicle position as right eye anchor point, and using the driving vehicle relative to the position of Current vehicle as car Anchor point；

Determine the left eye anchor point and the line of vehicle location point and first intersection point on the front windshield surface, Yi Jisuo State right eye anchor point and the line of vehicle location point and second intersection point on the front windshield surface；

Using the region where first intersection point as left image view field, using the region where second intersection point as the right side Image projected regions.

5. according to the method for claim 4, it is characterised in that the row by the driving vehicle relative to Current vehicle Sailing the step that information is projected in the view field includes：

Driving information based on the driving vehicle relative to Current vehicle, generates left projected image and right projected image, wherein, The left eyeglass for the 3D glasses that the left projected image is worn with the driver matches, the right projected image and the 3D eyes The right eyeglass of mirror matches；

By the left projector, image projection to the left image view field, by the right projector, image projection to the right image View field.

6. a kind of front truck driving information head-up-display system, it is characterised in that the system includes：Vehicle, line holographic projections film, people Eye identification camera, front truck identification camera, detection sensor and projection arrangement；

The line holographic projections film is covered in the front windshield surface of the vehicle；

The eye recognition camera is arranged at the cabin interior of the vehicle, and the face of its alignment lens driver, uses In detecting the eyes of driver in the vehicle relative to the position of the vehicle；

The front truck identification camera is arranged on the vehicle, whether there is for detecting in the vehicle front predeterminable area Driving vehicle；

The detection sensor is arranged on the vehicle, for when the vehicle front predeterminable area internal memory is in driving vehicle When, driving information of the driving vehicle relative to the vehicle is detected, it is relative that the driving information includes the driving vehicle In the travel speed and/or distance of the vehicle；

The projection arrangement is arranged at the inside of the vehicle, and with the eye recognition camera, front truck identification camera and Detection sensor connects, the position for the eyes according to the driver and the driving vehicle relative to the vehicle, The front windshield surface determines view field, and the driving vehicle is projected to relative to the driving information of the vehicle In the view field.

7. system according to claim 6, it is characterised in that the projection arrangement is used for：

Using the eyes of the driver relative to the position of the vehicle as human eye anchor point, and by the driving vehicle phase For the vehicle position as vehicle location point；

Determine the human eye anchor point and the line of vehicle location point and the intersection point on the front windshield surface；

Using the region where the intersection point as the view field.

8. system according to claim 6, it is characterised in that the eye recognition camera is used for：

Position of the left eye of driver with right eye relative to the vehicle in the vehicle is detected respectively.

9. system according to claim 8, it is characterised in that the projection arrangement is used for：

Using the left eye of the driver relative to the position of the vehicle as left eye anchor point, by the right eye phase of the driver For the vehicle position as right eye anchor point, and using the driving vehicle relative to the position of the vehicle as car Anchor point；

Determine the left eye anchor point and the line of vehicle location point and first intersection point on the front windshield surface, Yi Jisuo State right eye anchor point and the line of vehicle location point and second intersection point on the front windshield surface；

Using the region where first intersection point as left image view field, using the region where second intersection point as the right side Image projected regions.

10. system according to claim 9, it is characterised in that the system also includes 3D glasses, and the projection arrangement is used In：

Driving information based on the driving vehicle relative to Current vehicle, generates left projected image and right projected image；

By the left projector, image projection to the left image view field, by the right projector, image projection to the left image Right image view field of view field, wherein, the 3D glasses are worn by the driver, the left eyeglass of the 3D glasses and institute State left projected image to match, the right eyeglass of the 3D glasses matches with the right projected image.