Ultrasonic Devices

Good Essays
Topics: Ultrasound, Sound
PROJECT SYNOPSIS
ON
MICROCONTROLLER BASED ULTRASONIC DISTANCE MEASUREMENT

ABSTRACT:
The microcontroller based ultrasonic distance measuring device is a device used to calculate the distance between the ultrasonic transmitter/receiver and the object whose distance is to be measured. A microcontroller is used to calculate the delay time between the transmitted signal and the received signal.
ULTRASONIC WAVES:
Ultra means “beyond” and sonic means “sound”. Ultrasonic refers to sound waves that have higher frequency than the human audible range. The sound waves whose frequency lies above the audible frequency of 20 kHz are called Ultrasonic waves.
Ultrasonic sensors can detect small objects at considerable distances. They are able to disregard disturbing backgrounds and functions in fog, dust, dirt or extreme lighting is possible. They can detect any soft and hard materials. No correction factors have to be applied and color does not matter. In our project we are using two ultrasonic sensors. One is ultrasonic transmitter and the other is ultrasonic receiver. They transmit and receive the signal with 40 KHz frequency.

BLOCK DIAGRAM:

DESCRIPTION OF BLOCK DIAGRAM:
This circuit is designed to measure the distance of the object with the help of ultrasonic waves. The 12F675 microcontroller is used to generate the 40 KHz frequency signal. This signal is given to level logic converter (MAX232) in order to convert the TTL output pulse to +12V and -12V pulse. Then this pulse is transmitted through ultrasonic transmitter.
The ultrasonic waves spread in the air and hit the nearest object and reflected. The reflected signal from the object is received by the ultrasonic receiver. The received wave is given to the amplifier in order to amplify the received weak signal.
After amplification the amplified wave is given to zero adjustment amplifier because the amplified wave is in the range of above 6V level.
The output of amplifier

You May Also Find These Documents Helpful

  • Good Essays

    Ultrasonics

    • 2319 Words
    • 10 Pages

    Signal amplification circuit The ultrasonic signal which was received with the reception sensor is amplified by 1000 times(60dB) of voltage with the operational amplifier with two stages. It is 100 times at the first stage (40dB) and 10 times (20dB) at the next stage. As for the dB (decibel), refer to "Logarithm Table". Generally, the positive and the negative power supply are used for the operational amplifier. The circuit this time works with the single power supply of +9 V. Therefore, for the…

    • 2319 Words
    • 10 Pages
    Good Essays
  • Powerful Essays

    ultrasonic testing

    • 2638 Words
    • 11 Pages

    Indian Railways (reporting mark IR) It is an Indian state-owned enterprise, owned and operated by the Government of India through the Ministry of Railways. It is one of the world's largest railway networks comprising 115,000 km (71,000 mi) of track over a route of 65,000 km (40,000 mi) and 7,500 stations. As of December 2012, it transported over 25 million passengers daily (over 9 billion on an annual basis). In 2011, IR carried over 8,900 million passengers annually or more than 24 million passengers…

    • 2638 Words
    • 11 Pages
    Powerful Essays
  • Powerful Essays

    Ultrasonic Motor

    • 2590 Words
    • 11 Pages

    ultrasonic motor INTRODUCTION All of us know that motor is a machine which produces or imparts motion, or in detail it is an arrangement of coils and magnets that converts electric energy into mechanical energy and ultrasonic motors are the next generation motors. In 1980,the world’s first ultrasonic motor was invented which utilizes the piezoelectric effect in the ultrasonic frequency range to provide its motive force resulting in a motor with unusually good low speed, high torque…

    • 2590 Words
    • 11 Pages
    Powerful Essays
  • Good Essays

    Ultrasonic testing-NDT

    • 591 Words
    • 3 Pages

    sound is in the area of science called Nondestructive testing, or NDT. Ultrasonic testing (UT) has been practiced for many decades. Initial rapid developments in instrumentation encouraged by the technological advances from the 1950's continue today. Through the 1980's and continuing through the present, computers have provided technicians with smaller and more rugged instruments with greater capabilities. NDT ultrasonic Testing uses high frequency sound energy to conduct examinations and make…

    • 591 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    moreover sound give more accurate results when deployed in use. So here in our project , we are going for ULTRASONIC…

    • 591 Words
    • 3 Pages
    Satisfactory Essays
  • Powerful Essays

    Ultrasonic Speed Measurement

    • 10669 Words
    • 43 Pages

    “ULTRA SONIC SPEED MEASUREMENT DEVICE” A PROJECT REPORT Submitted in partial fulfillment Of requirements for award of the degree Of BACHELOR OF TECHNOLOGY In ELECTRONICS & COMMUNICATION ENGINEERING By: Nimisha Sharma Nishant Tyagi Gaurav Sharma…

    • 10669 Words
    • 43 Pages
    Powerful Essays
  • Good Essays

    nuclear power, and nuclear weapons helped the advancement of materials science, including titanium and aluminum, and the science of joining them. Ultrasonic welding was developed in 1960 by Aeroprojects Inc. Fine wire bonding was the first commercial use of ultrasonic welding. A disadvantage of ultrasonic welding is how many variables involved. Ultrasonic plastic welding was first used in 1963. Robert Soloff experimented with a probe and used it to weld two halves of a tape dispenser together.…

    • 853 Words
    • 4 Pages
    Good Essays
  • Good Essays

    By • It has been known for more than 30 years. • The first ultrasonic motor was introduce by v.v lavrinko in 1965. • An Ultrasonic motor is a type of electric motor formed from the ultrasonic vibration of a component, the stator being placed against another, the rotor depending on the scheme of operation. • Conversion of electric energy into motion by inverse piezoelectric effect. • To obtain the levels of torque speed characteristics of USM using conventional motors we require…

    • 548 Words
    • 3 Pages
    Good Essays
  • Good Essays

    How Ultrasonic proximity sensor works An ultrasonic proximity sensor uses a piezoelectric transducer to send and detect sound waves. Transducer generate high frequency sound waves and evaluate the echo by the detector which is received back after reflecting off the target. Sensors calculate the time interval between sending the signal and receiving the echo to determine the distance to the target. When the target enters the operating range the output switches. The ultrasonic proximity switches are…

    • 426 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    What Are UltraSonic Waves

    • 291 Words
    • 2 Pages

    What are UltraSonic Waves? Ultrasonic waves are sound waves with frequencies high about human hearing and short wave lengths. Sound waves have frequencies about 20,000 to 100,000. Also Ultrasound frequencies range from 20 kHz (the upper range of hearing for a young adult human) through 150 kHz (audible to some bats and other creatures), right up to 10 MHz (used in some medical treatments and industrial cleaning applications). While these frequencies overlap with those of radio waves, they are different…

    • 291 Words
    • 2 Pages
    Satisfactory Essays