Seat belt height self-adaptive adjustment method and device

Abstract

The invention relates to a seat belt height self-adaptive adjustment method. The method comprises the following steps: (1) after an engine is ignited, monitoring whether a signal of opening a seat belt height self-adaptive adjustment system is received or not; if receiving the signal, entering into the step (2); (2) monitoring whether a lock catch of a seat belt is inserted or not; if the lock catch of the seat belt is inserted, entering into the step (3); (3) detecting the height information of a driver, determining the position of a fixed point at the upper end of the seat belt according to the corresponding relation of the height of the driver and the seat belt, and entering into the step (4); (4) after adjusting the height of the seat belt according to the output position information, entering into the step (5); (5) determining whether the height is appropriate or not; if needing fine adjustment, adjusting to the appropriate height and then entering into the step (6); and (6) monitoring the lock catch information of the seat belt; and if judging that the lock catch has been extracted, ending the adjustment. The method can self-adaptively adjust the height of the seat belt, avoids the repeated manual adjustment of the driver, relieves the operational motion of the driver, and enhances the driving comfort.

Description

technical field [0001] The invention belongs to the field of automobiles, and relates to automobile safety technology, in particular to safety belt height adjustment technology. Background technique [0002] The position of the fixed point at the upper end of the three-point safety belt of the car will have a serious impact on the safety and comfort of users of different heights. The fixed point at the upper end of the seat belt with a relatively high position will cause the fabric of the seat belt to straddle the user's neck obliquely, thus causing the Unsafe factors; the relatively low fixed point will cause excessive pressure on the user's shoulder or upper arm, which will affect the driving comfort and the limit function of the seat belt. Therefore, most of the existing safety belt upper fixed points are provided with a height adjuster to manually adjust the height of the safety belt. This type of device needs to turn sideways when adjusting the height of the safety belt...

AI Technical Summary

Problems solved by technology

[0002] The position of the fixed point at the upper end of the three-point safety belt of the car will have a serious impact on the safety and comfort of users of different heights. The fixed point at the upper end of the seat belt with a relatively high position will cause the fabric of the seat belt to straddle the user's neck obliquely, thus causing the Unsafe factors; the relatively low fixed point will cause excessive pressure on the user's shoulder or upper arm, affecting driving comfort and seat belt limit function

Therefore, most of the existing safety belt upper fixed points are provided with a height adjuster to manually adjust the height of the safety belt. This type of device needs to turn sideways when adjusting the height of the safety belt, which is inconvenient to operate and cannot be adjusted automatically according to the driver's height. Adaptive adjustment increases the driver's operation action, but also reduces the driving comfort

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