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Automobile tire built-in braking characteristic sensing method

A technology of braking characteristics and sensing methods, applied in braking safety systems, measuring devices, vehicle testing, etc., can solve the problems of poor detection accuracy, poor real-time performance, and inability to sense and monitor vehicle braking performance, and achieve savings The effect of energy consumption

Inactive Publication Date: 2006-06-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the detection of automobile braking performance usually adopts contact sensing method, which is restricted by factors such as the range of speed and the accuracy of measuring parts. Sensing and Monitoring of Automobile Braking Performance

Method used

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  • Automobile tire built-in braking characteristic sensing method
  • Automobile tire built-in braking characteristic sensing method
  • Automobile tire built-in braking characteristic sensing method

Examples

Experimental program
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Embodiment 1

[0037] Such as figure 1As shown, the hardware system adopted by the automobile tire built-in braking characteristic sensing method includes an acceleration sensor unit 1, a sampling analog / digital conversion unit 2, a central control microprocessor unit 3, and an external data storage unit 4, which are electrically connected to each other Composed, and all installed on the inner wheel hub of the tire, the central control microprocessor unit 3 is connected with the external data storage unit 4 with a signal line, and is connected with the acceleration sensor unit 1 with a signal line through the sampling analog / digital conversion unit 2, and the central The control microprocessor unit 3 is also wirelessly connected with the external receiving system of the tire through the output port. Among them, the acceleration sensor signal unit 1 adopts the ADXL190 type, the sampling digital / analog conversion unit 2 adopts the AD7705 type, the central control microprocessor unit 3 adopts t...

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PUM

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Abstract

The invention discloses a built-in type braking property sensing method of automobile tyre, which comprises the following steps: sampling the radial tyre acceleration; storing the dynamic mark; filtering the dynamic waveform of tyre radial acceleration smoothly; comparing the dynamic slope; judging the starting time of tyre braking. The invention gains the relationship of braking character from internal radial acceleration signal of tyre to solve the judgment problem of dynamic automobile braking occurrence time through non-touchable flexible pattern, which provides a new path to monitor the automobile braking character.

Description

technical field [0001] The invention relates to a vehicle driving safety state sensing and dynamic monitoring technology, in particular to a vehicle tire built-in braking characteristic sensing method. Background technique [0002] Braking performance is an extremely important index for safe driving of a car. In the state of high-speed or non-high-speed driving, braking performance is a sudden factor of safety, and its condition will affect the safety of driving and life and property at any time. At present, the detection of automobile braking performance usually adopts contact sensing method, which is restricted by factors such as the range of speed and the accuracy of measuring parts. Sensing and monitoring of automotive braking performance. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings and deficiencies of the above-mentioned prior art, and provide a kind of det...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007B60T17/22G01L5/28
Inventor 林土胜杜明辉潘梦鹞
Owner SOUTH CHINA UNIV OF TECH