Do it Yourself Ultrasonic Sensor Module explanation as practically Introduction This ultrasonic distance sensor provides stable & accurate distance measurements. This module designed with very highly reliable ultrasonic transducer pair. It works on 40 KHz frequency and is highly suitable for making different types sensors for measuring distances & detecting obstacles. Connect the VCC & ground pins to the supply. Connect trigger input pin (Trig) pin to a digital output & echo (Echo) pin to a digital input of microcontroller. Pulse the Trig pin high for at least 10us and then wait for a high level on the Echo pin. The amount of time it takes to receive the echo corresponds to the distance that the ultrasonic sound has traveled. This sensor uses ultrasonic sound to measure distance just like bats & dolphins. The Sensor has two main parts transmitter & receiver. Transmitter generates ultrasonic sound and receiver receives its echo from any object in its way. Sound travels at approximately 340 meters/Second. This provides 29.412us for each 1 cm distance. Formula to measure distance is as following. D = (T * S) / 2 Where D = Distance T = Time S = Speed of Sound Circuit Specification • Supply Voltage – 5 V DC • Maximum Current – 20 mA • Output voltage - TTL Level • Range – 2 cm to 450 cm • Accuracy – 2 mm • Focus – 15 Degree Pin Specification VCC Supply + 5V Trig Trigger (Input) Echo Sound Echo (Output) GND Supply Ground Features • Accurate distance measurement or obstacle sensing • TTL level compatible (Directly connection to Microcontroller) • TRIG & Echo signal for easy communication • High quality PCB material & original component only • Each module tested with automatic testing machine Applications • Robotics Systems • Automotive Domain • Security & Surveillance • Smart Home System • Industrial Control System For More Information Page - facebook/eep4u website - wix/engineeringprojects0/Main
Posted on: Thu, 30 Jan 2014 01:27:28 +0000
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