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随着电子工业的迅速发展,测速仪的应用在各行业中已十分普及.至今普遍采用的是正功能测速仪.与正功能测速仪相比,逆功能测速仪能高精度地测量低转速,而且还能反映瞬时速度,能够适合对各种单位脉冲数(例如每转或每米内发生的脉冲数)的被测对象进行测量.随着数字集成电路的工作速度不断提高,尤其是高速CMOS集成电路的问世,给逆功能测速仪带来了光明的前景.可以预言,逆功能测速仪不久将在许多场合中取代正功能测速仪.
With the rapid development of the electronics industry, the application of the speedometer has become very popular in various industries. So far, the positive function speedometer is commonly used. Compared with the positive function speedometer, the reverse function speedometer can measure the low speed with high precision, But also to reflect the instantaneous speed, can be suitable for a variety of units of pulses (such as the number of pulses per revolution or per meter) measured object.With the increasing speed of digital integrated circuits, especially high-speed CMOS integrated circuits Has brought a bright future to the reverse-function speedometer, and it is predicted that the reverse-function speedometer will soon replace the positive-function speedometer on many occasions.