The Improved M/T method with 80C552 and a photo- electricity coder to measure electro-motor' s rotation speed can achieve a large scale of rotation speed measuring precision.
用80C552单片机和光电码盘配合改进的M/T法，检测铸轧辊的执行电机转速可获得大范围内测速精度。
The ranging precision and measuring speed are decided by the design of the time-of -flight measurement system to great extent.
其飞行时间测量系统的设计很大程度上决定了自触发脉冲激光测距的测量精度和测量速度。
In addition, the real-time environmental temperature is also measured to calibrate the speed of ultrasonic, consequently, improve measuring precision greatly.
另外，实时测量环境温度对超声波传播速度加以修正，从而大大提高了测量精度。
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