介绍了LPC 2129单片机定时器的捕获功能，以及在车速信号采集中的应用。
This paper introduces the capture function of microcontroller LPC2129 and its application to the vehicle speed signal acquisition system.
采用对车速信号进行滤波、差分、再滤波的方法获得了具有良好实时性和精度的汽车纵向加速度。
To investigate the method to obtain the real-time longitudinal acceleration based on its velocity, vehicle acceleration is obtained through the velocity filtering, differential, and then filtering.
前面的一辆车减慢车速，发出信号，开上路肩，顺利右转开进商业区。
The car in front of us had slowed down, signaled, pulled over toward the shoulder, and made a smooth right turn into a shopping complex.
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