【摘要】 文中介绍用于高速运动物体实时速度信号检测的系统。该系统以精密电流传感放大器MAX471作为检测电路的传感部分,并针对测速过程中所可能出现的干扰及速度变化的特点,提出排除异常点的方法。试验结果表明,该系统的定时误差≤0.1ms,可实现高精度、实时的速度信号测量。更多还原

【Abstract】 A system designed to measure real--time velocity for high-speed objects is introduced in this paper. This system adopts the precison current--sensor amplifier MAX47l as the sense part of measure circuit. In addition, a approach of abnormal dots’ elimination is used according to the characteristics of the interference and the velocity change in the process of velocity measurement. The result of experimentation shows that the time error of the system is up to 0.lms, and can carry out real- time and high precise velocity measurement.更多还原