An Automobile Ergonomics Field of View Calibration System

Abstract

The invention particularly relates to an automotive ergonomics vision checking system which is high in checking precision, low in workload of subsequence manual checking and accurate in manual checking. The checking system comprises a multi-shaft manipulator, wherein a clamping jaw is mounted at the upper end of the manipulator; a simulated light source is arranged at the outer end of the clamping jaw; light ray receiving devices are arranged around an automobile to be tested; multiple automobile exterior first laser scanners are arranged at corresponding positions in the light ray receiving devices; an automobile exterior second laser scanner is arranged right above the automobile to be tested; a controller is further connected with manual checking equipment in a communication manner; a laser scanning device only draws model parameters related to vision checking and is high in analysis speed. The checking system can automatically complete all contents of the vision checking, is high in checking precision and high in accuracy, and can be conveniently applied to different types of automobiles; manual checking steps are high in test precision and accuracy; a manual checking result can be directly fed back to the controller for correction, so that the workload of the subsequence manual checking is low.

Description

technical field [0001] The invention relates to the field of automobile ergonomics testing, in particular to a vision checking system for automobile ergonomics. Background technique [0002] Vision design in automobile ergonomics is a very important content, and it is the main factor affecting the active safety of automobiles; for this reason, it is necessary to ensure the vision requirements of car drivers, such as external signals and signs, road boundaries, passing vehicles, etc. The identification and information acquisition of road pedestrians and road pedestrians are the tasks of vehicle vision design. [0003] For example, the size of the front windshield of a car will affect the driver's forward vision, and the A-pillar will cause a blind spot at a certain angle in the driver's forward vision. In order to drive safely, these factors have corresponding standards and specifications; The design method is divided into two types. One is the traditional drawing method. It...

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Problems solved by technology

[0003] For example, the size of the front windshield of a car will affect the driver's forward vision, and the A-pillar will cause a blind spot at a certain angle in the driver's forward vision. In order to drive safely, these factors have corresponding standards and specifications; The design method is divided into two types. One is the traditional drawing method. Its basic principle is to draw the side view, front view, and rear view of the car, and then locate the position of the eye ellipse at the corresponding position in the side view of the car. Finally, use The field of view of the eye ellipse is calculated by the drawing method, but the process of this method is cumbersome, and the accuracy of manual work drawing check is low, which is prone to errors;

[0004] Another design method is to put the drawn 3D model of the car into the ergonomics verification software, and the software will automatically generate the field of view. Static calibration is performed at a certain angle, but the position and rotation angle of the exterior rearview mirror and interior rearview mirror used in practice can be adjusted, which causes a certain degree of error, and the calibration result is inaccurate; and the 3D model of the car The drawing is very complicated, and the overall model of the car is not actually needed for field of vision verification, only the modeling of the partial parts that block the field of view is required. The 3D model is simplified, which further increases the workload of verification;

[0005] The above two methods will have some deviations from the actual situation in the calculation, and it is difficult for designers to find problems in the design or verification stage, and there is no way to effectively test the verification situation; therefore, often after the completion of the car vision design work , It is also necessary for the tester to sit in the car and carry out corresponding tests. For example, whether the upper and lower boundaries of the rear windshield meet the requirements in the front view, the tester needs to sit in the car and then observe the car through the rearview mirror. Objects in the rear are judged by the testers. The follow-up manual verification process is cumbersome, and in order to keep the results correct, each step requires high precision, which further increases the difficulty of manual verification; It is easily affected by the on-site environment, such as light brightness, calibration objects and other factors, resulting in unsatisfactory results of manual calibration

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