Method for converting coordinates of fixed point of safety belt
A technology of coordinate conversion and fixed point, applied in computing, special data processing applications, instruments, etc., can solve the problems of low work efficiency, low calculation accuracy, long calculation time, etc., to improve work efficiency, shorten calculation time, Guaranteed effect of accuracy
Active Publication Date: 2010-11-24
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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Problems solved by technology
However, there are some problems in the traditional conversion method: first, if the measurement data is converted one by one, the calculation accuracy is not high; second, the calculation time is long and the work efficiency is low
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[0023] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0024] First establish the overall coordinate system of the car, with the person facing the front of the car as the main direction, the X-axis is the straight line direction where the centers of the two front and rear tires on the right side of the car are located, the Y-axis is the straight line direction where the centers of the two front tires of the car are located, and the Z-axis is the direction where the center of the two front tires of the car is located. The vertical height direction of the automobile at the center of the front tire on the right side; then establish each local coordinate system of the automobile, the seats in the automobile in this embodiment are two rows, each row is provided with two seats, and ea...
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The invention provides a method for converting coordinates of a fixed point of a safety belt, belongs to the technical field of automobiles, and solves the problems of low accuracy, long conversion time and the like in the conventional method for converting the coordinates of the fixed point of the safety belt. The method for converting the coordinates of the fixed point of the safety belt of the invention is used for converting the coordinates of the fixed point of the safety belt in a global coordinate system of an automobile into the relative coordinates of the fixed point of the safety belt in each local coordinate system and comprises the following steps of: (1) establishing the global coordinate system of the automobile; (2) establishing each local coordinate system of the automobile; (3) determining the coordinates of a relative zero point in the local coordinate system in the global coordinate system; (4) determining the coordinates of the fixed point of the safety belt in the global coordinate system; and (5) converting the relative coordinates of the fixed point of the safety belt in the local coordinate system into the coordinates of the fixed point of the safety belt in the global coordinate system. The method for converting the coordinates of the fixed point of the safety belt has the advantages of high accuracy and short conversion time so as to improve work efficiency.
Description
technical field [0001] The invention belongs to the technical field of automobiles, and relates to a conversion method, in particular to a coordinate conversion method of a safety belt fixed point. Background technique [0002] In the early design process of a car, a vehicle coordinate system is often established for the convenience of vehicle design. When designing seat belt fixed points, engineers and experimenters will introduce a local coordinate system containing the seat belt fixed points in order to more accurately determine the installation position of the seat belt fixed points. [0003] When designing and calculating the installation position of the safety belt fixed point, engineers and experimenters will often use the relative coordinate value of the safety belt fixed point in the local coordinate system. In order to obtain this relative coordinate value, generally through the safety The coordinates of the fixed point in the vehicle coordinate system and the rel...
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IPC IPC(8): G06F17/50
Inventor 潘选利吴成明刘卫国周大永夏涛格日勒冯军杰牛旭周李书福杨健赵福全
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD