CN114166522A - Method and system for measuring indirect visual field device of automobile - Google Patents
Method and system for measuring indirect visual field device of automobile Download PDFInfo
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- CN114166522A CN114166522A CN202111432596.9A CN202111432596A CN114166522A CN 114166522 A CN114166522 A CN 114166522A CN 202111432596 A CN202111432596 A CN 202111432596A CN 114166522 A CN114166522 A CN 114166522A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a method for measuring an automobile indirect visual field device, comprising the following steps of S1, parking a vehicle to a specified visual field measuring area; s2, placing the target objects around the vehicle according to the standard requirement; s3, two cameras and light emitting sources are symmetrically arranged at the eye spot part of the HPM-I dummy, and a laser is arranged in the middle of the eye spot part of the HPM-I dummy; s4, placing the HPM-I dummy on a driver seat of the vehicle; s5, starting a camera to shoot; s6, checking whether a target object appears in the sight glass in the shooting video picture; s7, turning on the luminous source, and shooting a top view of the visual field measurement area; s8, comparing the proportion of the shadow part relative to the visual field measuring area in the top view; s9, starting the laser to make the ray emitted by the laser align with the central line of the main outer rear-view mirror; s10, measuring the rotating angle of the HPM-I dummy head. The invention provides a method for measuring an automobile indirect visual field device, which improves the measuring efficiency of the automobile indirect visual field device. The invention also provides a measuring system of the automobile indirect visual field device.
Description
Technical Field
The invention relates to the technical field of automobile indirect visual field measurement, in particular to a method and a system for measuring an automobile indirect visual field device.
Background
The indirect view device is used for observing the traffic area adjacent to the vehicle, which cannot be observed by the direct view. The device can comprise a traditional optical sight glass, a camera, a monitor or other devices capable of providing indirect visual field information for a driver, and is a necessary device for observing other vehicles or pedestrians and objects during the driving process of the automobile, so that the driving safety of the automobile is ensured.
However, the national requirements on the performance and the installation of the automobile indirect visual field device are met, and in the GB 15084-2013 standard, the national requirements on the specific detection of each indirect visual field device of the automobile are met. During detection, the tested HPM-I dummy is placed on a car seat, the seat is adjusted to a necessary position and angle according to the regulations, and the state of the dummy during driving is simulated by the HPM-I dummy, wherein in GB 15084-2013 standard, strict requirements are provided for ensuring that an included angle between a vertical longitudinal middle plane of a vehicle and a vertical plane passing through the center of a sight glass and the center of a 65mm line segment connecting two eye points of a driver is not more than 55 degrees and the proportion of 6.5.9 in the standard for shielding the view when the position of an outer sight glass on one side of the driver of the vehicle is determined in the visual field area range of the left, the right and the rear of the vehicle and 6.3.4 in the standard.
However, in the measurement of the above three situations, the measurement needs complicated steps in the prior art, in some detection processes, specific environment and time are also needed, and errors also exist in the measurement process, thereby bringing inconvenience to people.
Disclosure of Invention
The invention aims to provide a method and a system for measuring an automobile indirect visual field device, which can accurately and efficiently measure according to the three standard requirements and improve the measuring efficiency of the automobile indirect visual field device.
The invention discloses a method and a system for measuring an automobile indirect visual field device, which adopt the technical scheme that:
an automobile indirect visual field device measuring method comprises the following steps:
s1, parking the vehicle to a specified visual field measuring area, and adjusting the vehicle seat to a factory design value;
s2, placing the target objects on the four corners or the edge lines of the specified area of the sight of the vehicle mirror according to the standard requirement;
s3, two cameras and light emitting sources are symmetrically arranged at the eyepoint part of the HPM-I dummy, the cameras are connected with external information processing equipment through data lines, and a laser is arranged in the middle of the eyepoint part of the HPM-I dummy;
s4, placing the HPM-I dummy on the good driver 'S seat set in S1, adjusting the HPM-I dummy to a prescribed angle and position, and setting a center line at the main exterior mirror near the driver' S seat side;
s5, starting the camera of the eye point part of the HPM-I dummy set in the S3 to shoot, and transmitting the shot video picture to an external information processing device;
s6, judging whether the installation of the vehicle mirror meets the standard requirement by checking whether a target object appears in the mirror in the shot video picture;
s7, turning on the luminous source of the eye spot part of the HPM-I dummy, arranging a shooting device above the vehicle, and shooting the top view of the visual field measuring area;
s8, in the top view shot in S7, the proportion of the shadow part relative to the sight measurement area is compared, so that the blocked range of the indirect sight of the automobile can be judged;
s9, starting the laser arranged in the middle of the eye point part of the HPM-I dummy arranged in the S3, and rotating the head of the HPM-I dummy towards the direction of the main outer rearview mirror at the driving side to enable the ray emitted by the laser to be aligned with the central line on the main outer rearview mirror;
s10, measuring the rotating angle of the HPM-I dummy head, and obtaining the included angle between the vertical reference plane between the central line of the main outer rearview mirror and the two eye points of the driver and the vertical reference plane of the vehicle.
Preferably, the camera is a visual field imaging high-definition camera, the position of the camera is 635mm in the Z-axis direction of the three-dimensional coordinate of the HPM-I dummy, and the center distance is 65 mm.
Preferably, in step S7, the environment of the vehicle is ensured to be a low-light environment before the light source is turned on.
The utility model provides an indirect field of vision device survey system of car, includes HPM-I dummy and the device of clapping prostrate, HPM-I dummy includes head mould and truck, the head mould rotates with the truck to be connected, head mould eyepoint position is equipped with two cameras relatively, just the camera embeds there is the light emitting source, the camera passes through the data line and is connected with external information processing equipment, be equipped with the laser instrument in the middle of the eyepoint position of head mould, the device of clapping prostrate includes support and camera, the camera is fixed in the support upper end, just the camera is towards setting up downwards, the camera is connected with external information processing equipment.
Preferably, the position of the camera is 635mm in the three-dimensional Z-axis direction of the HPM-I dummy, and the center distance is 65 mm.
As a preferred scheme, the support includes base, lifter and horizontal extension rod, the lifter is fixed in the base top, be connected through the lift cylinder between lifter and the base, the horizontal extension rod sets up perpendicularly in the lifter top, just horizontal extension rod one side is equipped with the lead screw, lead screw one end is rotated with the lifter and is connected, just the lifter upper end is equipped with the rotation motor, rotate motor and lead screw one end fixed connection, the movable block is located to lead screw surface cover, movable block and lead screw threaded connection, just movable block and horizontal extension rod sliding connection, the camera is fixed in the movable block below, just the camera sets up downwards.
Preferably, an angle sensor is arranged below the head die, and the angle sensor is positioned at the rotation center of the neck part below the head die.
The invention discloses a method for measuring an automobile indirect visual field device, which has the beneficial effects that: the camera is used for replacing the position of a traditional incandescent lamp luminous source, so that when the vehicle is used for measuring the indirect visual field area of the automobile, whether a target object placed in a specified visual field area of a vehicle mirror can be reflected or not can be observed from a video picture shot by human eyes simulated by the camera directly and effectively; the eye spot part of the HPM-I dummy is also provided with a luminous source, the luminous source is started, light rays emitted by the luminous source are reflected by a sight glass of a vehicle, so that a bright area is formed in a region specified by the sight glass of the vehicle, the bright area is equivalent to the sight field range of people in the vehicle, the sight field measuring region is shot through the overlooking angle, the ratio of a shadow area to the sight field measuring region can be calculated from a shot picture, the shielded range of an indirect sight field device of the vehicle can be judged, and the method is more efficient and accurate compared with the traditional measuring method; when the included angle of the vertical plane between the vertical middle plane of the longitudinal direction of the vehicle and the central point of the two eyes of the driver connected by the central line of the sight glass is measured, the laser in the middle of the eye point of the HPM-I dummy is started, the head of the HPM-I dummy is rotated towards the direction of the main outer rear view mirror, the ray emitted by the laser is aligned to the preset central line of the main outer rear view mirror, and therefore the included angle between the vertical reference plane of the central line of the main outer rear view mirror and the central point of the two eyes of the driver connected by the central line of the main outer rear view mirror and the vertical reference plane of the longitudinal direction of the vehicle can be directly obtained according to the rotated angle of the head of the HPM-I dummy. By the method, three requirements in the GB 15084-2013 standard can be accurately and efficiently measured, and the measurement efficiency of the automobile indirect visual field device is improved.
Drawings
FIG. 1 is a flow chart of a method for measuring an indirect visual field of an automobile according to the present invention.
FIG. 2 is a block diagram of an HPM-I dummy for an automotive indirect vision system measurement system in accordance with the present invention.
FIG. 3 is a schematic diagram of a head model of an HPM-I dummy for an automotive indirect horizon finder measurement system in accordance with the present invention.
FIG. 4 is a schematic diagram of a downward imaging device of the measurement system of the indirect visual field device of the automobile according to the present invention.
Detailed Description
The invention will be further elucidated and described with reference to the embodiments and drawings of the specification:
referring to fig. 1, a method for measuring an indirect visual field device of an automobile includes the following steps:
s1, the vehicle is parked to a predetermined vision measuring area, and the vehicle seat is adjusted to a factory design value. The used sight measuring area is different according to different types of vehicles, the sight measuring area is defined according to actual conditions, and the sight measuring is carried out under the condition of ensuring safety.
And S2, placing target objects on four corners or edge lines of a specified area of the sight of the vehicle mirror according to standard requirements, arranging a plurality of corresponding target objects on the periphery of the measured vehicle according to the sight requirement of 6.5 in GB 15084-2013 on the mirror, and judging whether the sight of the vehicle mirror meets the requirement by checking whether the corresponding target objects can appear in the vehicle mirror.
S3, two cameras and light emitting sources are symmetrically arranged at the eyepoint part of the HPM-I dummy, the cameras are connected with external information processing equipment through data lines, and a laser is arranged in the middle of the eyepoint part of the HPM-I dummy. The HPM-I dummy adopts a GB generation three-dimensional H point measurement dummy, the surface of the HPM-I dummy is provided with a plurality of expansion interfaces, so that a camera and a luminous source can be arranged at the eye point part of the HPM-I dummy, the camera is a visual field imaging high-definition camera, the position of the camera is 635mm in the Z-axis direction of the three-dimensional coordinate of the HPM-I dummy, the center distance is 65mm, the camera is connected with external information processing equipment through a data line, and the external information processing equipment can be intelligent equipment such as a computer or a mobile phone.
S4, the HPM-I dummy is placed on the good vehicle driver 'S seat in S1, and the HPM-I dummy is adjusted to a prescribed angle and position, and the center line is set at the main exterior mirror on the side close to the driver' S seat. The HPM-I dummy is debugged to a standard posture on a vehicle driver seat, so that errors in the measuring process are reduced, and a preparation process before measurement is completed.
And S5, starting the camera of the eye point part of the HPM-I dummy set in the S3 to shoot, and transmitting the shot video picture to the external information processing device. The left eye and the right eye of a human are simulated through two cameras at the eye point part of the HPM-I dummy, the existing visual system is combined, the center of the mirror surface of the sight glass is focused and shot, and the shot picture is transmitted to external information processing equipment.
And S6, checking whether a target object appears in the mirror in the shot video picture to judge whether the installation of the vehicle mirror meets the standard requirements, if the visual field area corresponding to different mirrors such as a rear-view mirror, an inner-view mirror, a main outer-view rear-view mirror and the like is specified in 6.5 of the GB 15084-2013 standard, the target object can be placed at the specified visual field area boundary, and whether the mirror covers the corresponding visual field range can be directly judged by observing whether the corresponding target object appears in the mirror.
S7, a light emitting source of the eye spot part of the HPM-I dummy is turned on, a shooting device is arranged above the vehicle to shoot a top view of a visual field measuring area, and when the detection is carried out in S7, the environment where the vehicle is located is ensured to be in a dark environment before the light emitting source is turned on, so that the light emitted by the light emitting source can be shot by a camera more clearly and obviously, a shadow area formed by shading is more obvious, and then the software can be conveniently and quickly calculated.
S8, in the top view shot in S7, the proportion of the shadow part to the sight measurement area is compared, so that the blocked range of the indirect sight of the automobile can be judged, the shot picture can calculate the bright and shadow parts of the picture through the existing image processing, the proportion of the shadow area in the sight measurement area is rapidly known, and the measurement requirement of 6.5.9 in the GB 15084-2013 standard is met.
And S9, starting the laser arranged in the middle of the eye point part of the HPM-I dummy arranged in the S3, and rotating the head of the HPM-I dummy towards the direction of the main outer rearview mirror on the driving side to enable the ray emitted by the laser to be aligned with the central line on the main outer rearview mirror.
S10, measuring the rotating angle of the HPM-I dummy head, and obtaining the included angle between the vertical reference plane of the central line of the main outer rearview mirror connecting the two eyes of the driver and the vertical reference plane of the vehicle, thereby completing the mirror setting requirement of 6.3.4 in the GB 15084-2013 standard.
The camera is used for replacing the position of a traditional incandescent lamp luminous source, so that when the vehicle is used for measuring the indirect visual field area of the automobile, whether a target object placed in a specified visual field area of a vehicle mirror can be reflected or not can be observed from a video picture shot by human eyes simulated by the camera directly and effectively;
and the eyespot part of the HPM-I dummy is also provided with a luminous source, the luminous source is started, light rays emitted by the luminous source are reflected by a sight glass of a vehicle, so that a luminous area is formed in an area specified by the sight glass of the vehicle, the luminous area is equivalent to the sight field range of people in the vehicle, the sight field measuring area is shot through the overlooking angle, the ratio of a shadow area to the sight field measuring area can be calculated from a shot picture, the shielded range of an indirect sight device of the vehicle can be judged, and the method is more efficient and accurate compared with the traditional measuring method.
When the included angle of the vertical plane between the vertical middle plane of the longitudinal direction of the vehicle and the central point of the two eyes of the driver connected by the central line of the sight glass is measured, the laser in the middle of the eye point of the HPM-I dummy is started, the head of the HPM-I dummy is rotated towards the direction of the main outer rear view mirror, the ray emitted by the laser is aligned to the preset central line of the main outer rear view mirror, and therefore the included angle between the vertical reference plane of the central line of the main outer rear view mirror and the central point of the two eyes of the driver connected by the central line of the main outer rear view mirror and the vertical reference plane of the longitudinal direction of the vehicle can be directly obtained according to the rotated angle of the head of the HPM-I dummy.
By the method, the measurement can be accurately and efficiently carried out according to three requirements in the GB 15084-2013 standard, the measurement efficiency of the automobile indirect visual field device is improved, and the position of a traditional incandescent lamp light source is replaced by the camera, so that when the automobile indirect visual field device is measured, whether a target object in a visible area of an adjacent vehicle can be reflected in a sight glass of the automobile can be observed directly and effectively from a video picture shot by human eyes simulated by the camera.
In addition, the measurement sequence of the steps S5 to S6, S7 to S8, and S9 to S10 can be changed arbitrarily, the measured results are not affected, and the measurement personnel can estimate the actual situation to adjust freely.
Referring to fig. 2, 3 and 4, an automotive indirect visual field device measuring system includes an HPM-I dummy 10 and a nodding device 20, the HPM-I dummy 10 includes a head model 12 and a trunk 11, the head model 12 is rotatably connected with the trunk 11, two cameras 13 are oppositely arranged at eye points of the head model 12, and the positions of the cameras 13 are 635mm in the Z-axis direction of the three-dimensional coordinate of the HPM-I dummy 10, and the center distance is 65 mm.
The camera 13 is internally provided with a light emitting source 14, the camera 13 is connected with an external information processing device through a data line, the laser 15 is arranged in the middle of the eye point part of the head model 12, the overhead shooting device 20 comprises a bracket 21 and a camera 22, the camera 22 is fixed at the upper end of the bracket 21, the camera 22 is arranged towards the lower part, and the camera 22 is connected with the external information processing device.
The camera 13 simulates the driver's view in the vehicle to determine whether the field of view is in accordance with the standard from the mirror, and the overhead view device 20 can be used to capture a top view of the outside of the vehicle and the field of view measurement area.
The support 21 includes base 211, lifter 212 and horizontal extension rod 213, the lifter 212 is fixed in the base 211 top, be connected through lift cylinder 214 between lifter 212 and the base 211, horizontal extension rod 213 sets up perpendicularly in the lifter 212 top, and horizontal extension rod 213 one side is equipped with lead screw 215, lead screw 215 one end is rotated with the lifter 212 and is connected, and the lifter 212 upper end is equipped with rotation motor 216, rotation motor 216 and lead screw 215 one end fixed connection, the movable block 217 is located to lead screw 215 surface cover, movable block 217 and lead screw 215 threaded connection, and movable block 217 and horizontal extension rod 213 sliding connection, camera 22 is fixed in the movable block 217 below, and camera 22 sets up downwards.
When needing to take a picture, drive lifter 212 through lift cylinder 214 and rise, and horizontal extension 213 of lifter 212 top also rises together, rethread rotation motor 216 drives lead screw 215 and rotates, movable block 217 and horizontal extension 213 sliding connection on lead screw 215 surface to horizontal extension 213 restricts movable block 217 and rotates along with lead screw 215, makes movable block 217 move along lead screw 215, adjusts the horizontal position of camera 22 below movable block 217, makes camera 22 can carry out better, shoot more accurately.
An angle sensor 16 is arranged below the head die 12, the angle sensor 16 is positioned in the center below the head die 12, the rotating angle of the head die 12 during measurement can be obtained more directly through the angle sensor 16, and errors caused by manual calculation and measurement are avoided.
The invention provides a method for measuring an automobile indirect visual field device, which utilizes a camera to replace the position of a traditional incandescent lamp luminous source, so that when an automobile indirect visual field region is measured, whether a target object placed in a specified region of a vehicle mirror visual field can be reflected in a vehicle mirror can be observed from a video picture shot by human eyes simulated by the camera directly and effectively; the eye spot part of the HPM-I dummy is also provided with a luminous source, the luminous source is started, light rays emitted by the luminous source are reflected by a sight glass of a vehicle, so that a bright area is formed in a region specified by the sight glass of the vehicle, the bright area is equivalent to the sight field range of people in the vehicle, the sight field measuring region is shot through the overlooking angle, the ratio of a shadow area to the sight field measuring region can be calculated from a shot picture, the shielded range of an indirect sight field device of the vehicle can be judged, and the method is more efficient and accurate compared with the traditional measuring method; when the included angle of the vertical plane between the vertical middle plane of the longitudinal direction of the vehicle and the central point of the two eyes of the driver connected by the central line of the sight glass is measured, the laser in the middle of the eye point of the HPM-I dummy is started, the head of the HPM-I dummy is rotated towards the direction of the main outer rear view mirror, the ray emitted by the laser is aligned to the preset central line of the main outer rear view mirror, and therefore the included angle between the vertical reference plane of the central line of the main outer rear view mirror and the central point of the two eyes of the driver connected by the central line of the main outer rear view mirror and the vertical reference plane of the longitudinal direction of the vehicle can be directly obtained according to the rotated angle of the head of the HPM-I dummy. By the method, three requirements in the GB 15084-2013 standard can be accurately and efficiently measured, and the measurement efficiency of the automobile indirect visual field device is improved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The method for measuring the indirect visual field device of the automobile is characterized by comprising the following steps of:
s1, parking the vehicle to a specified visual field measuring area, and adjusting the vehicle seat to a factory design value;
s2, placing the target objects on the four corners or the edge lines of the specified area of the sight of the vehicle mirror according to the standard requirement;
s3, two cameras and light emitting sources are symmetrically arranged at the eye spot part of the HPM-I dummy, the cameras are connected with external information processing equipment through data lines, and a laser is arranged in the middle of the eye spot part of the HPM-I dummy;
s4, placing the HPM-I dummy on the good driver seat of the vehicle in S1 according to the specification, adjusting the HPM-I dummy to the specified angle and position, and arranging the central line on the main outer rearview mirror close to one side of the driver seat;
s5, starting the camera of the eye point part of the HPM-I dummy set in the S3 to shoot, and transmitting the shot video picture to an external information processing device;
s6, judging whether the installation of the vehicle mirror meets the standard requirement by checking whether a target object appears in the mirror in the shot video picture;
s7, turning on the luminous source of the eye spot part of the HPM-I dummy, arranging a shooting device above the vehicle, and shooting the top view of the visual field measuring area;
s8, in the top view shot in S7, the proportion of the shadow part relative to the sight measurement area is compared, so that the blocked range of the indirect sight of the automobile can be judged;
s9, starting the laser arranged in the middle of the eye point part of the HPM-I dummy arranged in the S3, and rotating the head of the HPM-I dummy towards the direction of the main outer rearview mirror at the driving side to enable the ray emitted by the laser to be aligned with the central line on the main outer rearview mirror;
s10, measuring the rotating angle of the HPM-I dummy head, and obtaining the included angle between the vertical reference plane between the central lines of the main outer rearview mirror and the two eyes of the driver and the vertical reference plane of the vehicle.
2. The method for measuring the indirect visual field device of the automobile according to claim 1, wherein the camera is a visual field imaging high-definition camera, the position of the camera is 635mm in the Z-axis direction of the three-dimensional coordinates of the HPM-I dummy, and the center distance is 65 mm.
3. The method of claim 1, wherein the environment of the vehicle is ensured to be a low-light environment before the light source is turned on in step S7.
4. The utility model provides an indirect field of vision device survey system of car, its characterized in that, includes HPM-I dummy and the device of clapping prostrate, HPM-I dummy includes head model and truck, the head model rotates with the truck to be connected, head model eyepoint position is equipped with two cameras relatively, just the camera embeds there is the light emitting source, the camera passes through the data line and is connected with external information processing equipment, be equipped with the laser instrument in the middle of the eyepoint position of head model, the device of clapping prostrate includes support and camera, the camera is fixed in the support upper end, just the camera is towards setting up downwards, the camera is connected with external information processing equipment.
5. The indirect visual field apparatus measuring system for vehicle of claim 4, wherein the camera position is 635mm in the Z-axis direction of the three-dimensional coordinates of the HPM-I dummy and the center-to-center distance is 65 mm.
6. The system as claimed in claim 4, wherein the holder comprises a base, a lifting rod and a horizontal extension rod, the lifting rod is fixed above the base, the lifting rod is connected with the base through a lifting cylinder, the horizontal extension rod is vertically disposed above the lifting rod, a lead screw is disposed on one side of the horizontal extension rod, one end of the lead screw is rotatably connected with the lifting rod, a rotating motor is disposed on the upper end of the lifting rod, the rotating motor is fixedly connected with one end of the lead screw, a surface of the lead screw is sleeved on a moving block, the moving block is in threaded connection with the lead screw, the moving block is slidably connected with the horizontal extension rod, the camera is fixed below the moving block, and the camera is disposed downward.
7. The system for measuring an indirect visual field of an automobile according to claim 4, wherein an angle sensor is provided under the head mold, and the angle sensor is located at a rotation center of a neck portion under the head mold.
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| CN115356124A (en) * | 2022-07-26 | 2022-11-18 | 长春汽车检测中心有限责任公司 | Automobile anti-collision performance testing device |
| CN115356124B (en) * | 2022-07-26 | 2024-05-31 | 长春汽车检测中心有限责任公司 | Automobile anti-collision performance testing device |
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