华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (1): 1-6.

• 电子、通信与自动控制 •    下一篇

轮胎内置加速度传感器的汽车制动特性传感方法

林土胜1 潘梦鹞2 杜明辉1   

  1. 1.华南理工大学电子与信息学院,广东广州510640;2. 广东广物汽贸机动车检测服务有限公司,广东广州510410
  • 收稿日期:2006-03-14 出版日期:2007-01-25 发布日期:2007-01-25
  • 通信作者: 林土胜(1945-) ,男,教授,博士生导师,主要从事电路与系统、信号与信息处理等方面的研究. E-mail:eetshlin@scut.edu.cn
  • 作者简介:林土胜(1945-) ,男,教授,博士生导师,主要从事电路与系统、信号与信息处理等方面的研究.
  • 基金资助:

    国家自然科学基金资助项目(60472006)

Sensing Approach for Automobile Braking PerformanceUsing Tire-Mounted Accelerometer

Lin Tu-shengPan Meng-yaoDu Ming-huil   

  1. 1. School of Electronic and Information Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China;2. Automobile Inspection Services Co. , Ltd. of GDAM , Guangzhou 510410 , Guangdong , China
  • Received:2006-03-14 Online:2007-01-25 Published:2007-01-25
  • Contact: 林土胜(1945-) ,男,教授,博士生导师,主要从事电路与系统、信号与信息处理等方面的研究. E-mail:eetshlin@scut.edu.cn
  • About author:林土胜(1945-) ,男,教授,博士生导师,主要从事电路与系统、信号与信息处理等方面的研究.
  • Supported by:

    国家自然科学基金资助项目(60472006)

摘要: 车制动性能失灵会危及生命安全.为此,文中提出一种通过微电子机械系统(MEMS) 电容加速度传感器来监测动态汽车制动性能的方案.将传感装直安装在汽车轮胎内部用以获取径向加速度信号,将制动时段的径向加速度信号通过无线通信方式向外部接收系统传送,作为后续变换处理和制动性能坪估的依据.文中对加速度传感器信号的组成进行了理论推导,并阐述了传感器信号的采样、动态标注和存储、平滑去嗓、斜率比较以及制动起始时刻判定等的处理方法.硬件实验结果验证了该轮胎内直传感方案的可行性。

关键词: 汽车, 轮胎, 加速度传感器, 制动, 监测

Abstract:

As the malfunction of automobile braking system is life threatening , a monitoring scheme of dynamic automobilebraking performance using MEMS (Micro-Electro-Mechanical System) capacitive accelerometer is proposed.In this scheme , the accelerometer set is fixed in the tire to collect the radial acceleration , and the signals ofradial acceleration in the braking period are sent to the outer receiving system by wireless communication. The signalsare then used as a basis for the later transformation from radial acceleration to tire acceleration and for the evaluationof braking performance. Moreover , the components of the radial acceleration are theoretically derived , andthe processing methods such as the signal sampling , the dynamic marking and storing , the noise removing , theslope comparison and the onset detection of braking operation are described. The results of hardware experimentsverify the feasibility of the tire-mounted accelerometer approach.

Key words: automobile, tire, accelerometer, braking, monitoring