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JGW-1S型数字式万能工具显微镜简称数万显(见本刊1978年第5期封面照片),是一种精密光学计量仪器,仪器应用光栅计量技术降机械长度位移转换成电信号,经电子细分形成计数脉冲,达到被测工件直接由可逆计数器显示测量值,最后还可用打印机进行记录。仪器的测量范围纵向为200毫米,横向为100毫米,数显装置的最小读数为0.5微米,测量速度最快为200毫米/秒。本文重点介绍JGW-1S型“数万显”数显部分的实际应用电路。一、光电传感器光电传感器的作用是把光栅组形成的莫尔条纹转换成具有一定幅值的四相正弦电信号,
JGW-1S digital omnipotent tool microscope referred to as tens of thousands of significant (see the publication of the first five in 1978 cover photo), is a precision optical measurement instruments, instrumentation, grating measurement technology to reduce mechanical length displacement into electrical signals, the electronic Subdivides the formation of counting pulses, the measured workpiece to be measured directly by the reversible counter measurements, the last printer can also be recorded. The measurement range of the instrument is 200 mm vertically and 100 mm horizontally. The minimum reading of the digital display device is 0.5 μm and the measurement speed is up to 200 mm / sec. This article focuses on JGW-1S-type “tens of thousands of significant” digital display part of the practical application circuit. First, the photoelectric sensor Photoelectric sensor is the role of the moire grating group formed into a certain amplitude of the four-phase sinusoidal electrical signals,