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在生产流水线上,需要对各个工时的产量进行检测计数,采用红外光电开关的方法,可以收到预期的效果。本文介绍一种用于记录流水线产品数量的红外检测计数器的制作方法。 一、电路与工作原理 图1是该装置的原理电路。图中,由2输入端的与非门IC_1中的两个与非门门1与门2组成环形振荡器,产生频率为30～50 kHz、占空比为1:1的方波。调节电位器RP,可调节振荡频率在38 kHz,再经与非门3、4整形后,加到三极管
In the production line, the need for the production of various working hours count, the use of infrared photoelectric switch method, you can receive the desired results. This article describes a method for making an infrared detection counter that records the number of pipelined products. First, the circuit and working principle Figure 1 is the principle circuit of the device. In the figure, a ring oscillator is formed by two NAND gates IC_1 and NAND gate 2 at the two input terminals to generate a square wave with a frequency of 30-50 kHz and a duty ratio of 1: 1. Adjust potentiometer RP, adjustable oscillation frequency at 38 kHz, and then by NAND gate 3,4 plastic, added to the transistor