Control method for steering wheel collapse and device using same

Abstract

The invention provides a control method for steering wheel collapse. The method comprises the following steps: 1) using a sensor to monitor an accelerated speed of a vehicle in a driving process and send a real-time signal to a microprocessor; 2) computing the real-time signal received from the sensor by the microprocessor, judging if present situation of the vehicle is collision situation and judging the collision degree of the vehicle; and 3) when the present situation is the collision situation and the collision is serious, directly sending an igniting signal to a gas generator by the microprocessor and sending a collapse signal to a steering wheel tubular column. Furthermore, the invention provides a control device which controls according to the method. According to the control method, the accelerated speed of the vehicle is monitored at real time while the collapse of the steering wheel tubular column is guided at real time, so that the starting time of the collapse of the steering wheel tubular column is accurately controlled.

Description

technical field [0001] The invention relates to a control method, in particular to a steering wheel collapse control method and device. Background technique [0002] With the continuous improvement of people's awareness of automobile safety in recent years, vehicle manufacturers are also paying more and more attention to the design of passive safety. In order to improve the safety performance of the vehicle body, OEMs have adopted a collapsible safety structure body and deformable seats, and are generally equipped with seat belt pretensioners, multiple airbags, and collapsible steering wheels. The application of these devices enables the vehicle to absorb the impact energy through the deformation of the body when a collision occurs, restrain the occupants to prevent the occupants from moving in the cockpit, reduce the impact force received by people during the collision, and reduce the damage of secondary collisions, etc. , to protect the occupants and pedestrians in the ca...

AI Technical Summary

Problems solved by technology

[0003] Among them, the purely mechanical collapsible steering wheel cannot accurately grasp the starting time of the steering column collapsing. To achieve accurate starting collapsing, an external electronic control unit is required. In the prior art, the Chinese invention patent application number is 200810111160.8, It provides an airbag signal interception system to obtain the ignition signal of the airbag, so that the external safety device can start the steering wheel column collapse in time

However, in the process of interception, the deployment effect of the airbag is affected, and misoperation is prone to occur. There are certain signal errors, and additional wiring harnesses and devices are required. The more complicated the wiring harness, the more control units, the higher the cost of the vehicle.

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