速度检测专用芯片电路的设计

The Design of a Velocity Measurement Integrated Circuit

对具有周期性运动特点的物体，采用计量周期运动时间以及通过周期运动行程与周期运动时间的除法运算可获得其运动速度，本文所论述的就是基于这个思想而进行的一种检测速度的新型电路设计方法。该设计采用集成芯片电路的设计方法，电路可由单片集成电路实现。电路主要由周期计时电路、周期数据预置电路、运算电路及时钟和时序等电路构成。这种电路用于速度检测，具有检测范围广和检测精度高的特点，速度测量范围可覆盖三个数量级，电路处理误差小于千分之一。

For cyclic moving objects, the moving speed can be calculated by calculated by measuring the moving peried and dividingthe period by the distance in it. Based on the theory, a new integrated circuit was designe to measure the line speed of a moving body. This circuit is implemented on a monolithic chip, which is comprised of a period time sampling unit, a peri-od distanee preset unit, an arithmetic unit, a clock and time sequence unit.Used in the measurement of speed, it featureswide range(covering 3 orders of magnitude)and high accuracy(with calculation error leesthan 0.1).