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System and method for measuring dynamic crumple speed of automobile steering column

A steering column and speed measurement technology, applied in linear/angular velocity measurement, speed/acceleration/impact measurement, vehicle steering/bump performance, etc., can solve the problem that the dynamic collapse speed of the steering column is difficult to measure, and achieve reliability and feasibility cost effect

Active Publication Date: 2020-05-15
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a system and method for measuring the dynamic collapse velocity of steering column of an automobile, to measure the dynamic collapse velocity of steering column under actual collision conditions, and to solve the problem of dynamic collapse velocity of steering column in actual vehicle collision. Difficult to measure problem

Method used

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  • System and method for measuring dynamic crumple speed of automobile steering column
  • System and method for measuring dynamic crumple speed of automobile steering column
  • System and method for measuring dynamic crumple speed of automobile steering column

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Embodiment 1

[0030] Such as figure 1 As shown, the automobile steering column dynamic collapse velocity measurement system includes three acceleration sensors, data acquisition system and control computer. Two acceleration sensors S4 and S5 are respectively installed at both ends of the upper steering column S1 and the lower steering column S2, and one acceleration sensor S6 is installed at the lower end of the B-pillar S3 of the vehicle. These acceleration sensors are connected to the data acquisition system S7 through wired signals, and the acceleration signals at three positions are transmitted to the data acquisition system, and the data acquisition system is connected to the control computer S8 to process the data.

Embodiment 2

[0032] combine figure 1 , figure 2 , image 3 and Figure 4 , the method for measuring the dynamic collapse velocity of an automobile steering column comprises the following steps:

[0033] Step 1: If figure 1 As shown, the upper column acceleration sensor S4 and the lower column acceleration sensor S5 are respectively installed at both ends of the upper column S1 of the steering column and the lower column S2 of the steering column, so that the upper column acceleration sensor S4 and the lower column acceleration sensor The measurement direction of S5 is the axial direction of the steering column, that is, the direction of collapse. Then install a B-pillar acceleration sensor S6 at the lower end of the B-pillar S3 on the driver's side of the vehicle, so that the measurement direction of the B-pillar acceleration sensor S6 is the normal driving direction of the vehicle.

[0034] Step 2: If figure 1 As shown, the upper column acceleration sensor S4, the lower column acce...

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Abstract

The invention provides a system and method for measuring the dynamic crumple speed of an automobile steering column. The system comprises acceleration sensors, a data acquisition system and a controlcomputer, wherein at least three acceleration sensors are respectively mounted on an upper column casing and a lower column casing of the steering column and mounted at the lower end of a vehicle B column, and the acceleration sensors are connected with the data acquisition system through wired or wireless signals and transmit acceleration signals at three positions to the data acquisition system;and the control computer processes the data, corrects the speed obtained by integrating the acceleration to obtain the crumple speed of the steering column, and the information such as the crumple moment, the motion state and the dynamic crumple displacement of the steering column can be obtained through the crumple speed. The system is simple, reliable, feasible and low in cost, and solves the problem that the crumple speed of the steering column is difficult to measure in a real vehicle collision test.

Description

technical field [0001] The invention belongs to the field of automobile steering system test, and in particular relates to the measurement technology of the dynamic collapse speed of automobile steering column. Background technique [0002] In the process of a frontal collision accident of a car, because the existence of the steering system reduces the space for the driver to move forward, it is more difficult for the vehicle to protect the driver than to protect other occupants in the car. Therefore, collapsible Steering column to avoid and reduce the damage caused by the steering wheel, airbag and other devices to the driver. When the collapsible steering column is subjected to a certain impact force or receives a collapse signal, it collapses and moves away from the driver, thus increasing the distance between the driver and the steering wheel to avoid the driver and the airbag. Rigid violent collision with the steering wheel. However, during normal use, the steering co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P3/00G01M17/06G01M17/007
CPCG01P3/00G01M17/06G01M17/0078
Inventor 李佳耀彭令旦尹长青
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD