Ultrasonic remote control switching circuit diagram

Published:2011/9/16 1:04:00 Author:Rebekka | Keyword: Ultrasonic remote control, switching circuit | From:SeekIC

This example describes the ultrasonic remote control switch. The remote distance is 10m or more. It can be widely used in industrial automation control and home appliance control. The ultrasonic remote control switching circuit is composed of an ultrasonic transmitter circuit and receiver circuit. Ultrasonic transmitter circuit is composed of the control button S, time-base integrated circuit IC1, transistors V1, V2, resistors R1 ~ R5, potentiometer RP1, diode VD1, VD2, capacitors C1, C2 and the first ultrasonic transmitter composed of B1. Here is the circuit. Ultrasonic transmitter circuit Ultrasonic receiver circuit is composed of an ultrasonic receiver B2, transistors V3 ~ V5, operational amplifier integrated circuit IC2, relay K, the diode VD3 ~ VD5 and resistors R6 ~ R15, capacitors C3 ~ C5, potentiometers RP2 and other components. Here is the circuit. Ultrasonic receiver circuit. Optional components selectionR1 ~ R15 use 1/4W carbon film resistors or metal film resistors. RP1 and RP2 use small potentiometers or sealed variable resistors. C1 uses high-frequency ceramic capacitors; C2 ~ C5 use monolithic capacitors or polyester capacitors.VD1 ~ VD5 use 1N4148 silicon switching diodes. V1, V3 and V4 use S9014 silicon NPN transistors; V2 and V5 use S9015 silicon PNP transistors; V6 uses S9013 or C8050 silicon NPN transistor. IC1 uses NE555 or 5G1555 time-base circuit; IC2 uses μA741 or CA3140, LF351 etc. integrated circuits. B1 uses T40 ultrasonic transmitter emission terminal; 82 uses R40 ultrasonic receiver terminal. K uses universal 9V DC relay,andthe capacity of visual contact may be controlled by electrical power.



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