(PDF) Electrical Engineering Assignment

Added on - 24 Apr 2021

  • 18

    Pages

  • 2516

    Words

  • 11

    Views

  • 0

    Downloads

Trusted by +2 million users,
1000+ happy students everyday
Showing pages 1 to 4 of 18 pages
UNIVERSITY AFFILIATIONDEPARTMENT OR FACULTYCOURSE NAME & IDTITLE:ELECTRICAL ENGINEERING DESIGN ICOMPONENT TESTING AND CALIBRATIONSTUDENT NAMESTUDENT REGISTRATION NUMBERDATE OF SUBMISSION
COMPONENT TESTING AND CALIBRATIONULTRASONIC MODULE HC-SR04(i)Component typeThe ultrasonic proximity sensor runs on sound wave frequencies above the humanhearing range. The sound wave reception ports are incorporated in these sensors and theymeasure the echo encountered by the detector as they are received after reflecting backfrom the target. The choice of the HC-SR04 is that it offers a precise, non-contactdistance measurements. It is relatively easy to connect to microcontrollers and the systemmeasures a distance within the range of 2 cm to 300 cm. the sensor can only receivesignals and send signals within the limits of a given design as described in the design datasheet. There are two pins namely Trigger and Echo pins which emit short span bursts ofsound and listen up for echo from the target. They are either piezoelectric or electrostaticby make. The piezoelectric can be used in rugged environments as they are made ofceramic and have a sealed housing. The device has a transducer that converts energyfrom one form to another. The vibrations sent and received are speedy and tend togenerate high pitched noise at levels that can’t be reached by the human ear. Thevibrations are ultrasonic signals for the sensors.(ii)Data Sheet informationThe key features of the HC-SR04 are,Power Supply+5v DCQuiescent Current< 2mAWorking Current15mAEffectual Angle<150Ranging Distance2cm – 400 cmResolution0.3cmMeasuring Angle300Trigger input pulse width10μSDimension45mm x 20mm x 15mm
The microchip company gives a product warranty which is usually valid for only 6months. The device is interfaced with a microcontroller alongside other display components. Theobject being detected needs to be the object closest to the sensor on its path. The ultrasonicmodule can be referred to as a sound sensor or a ping sensor. The sensor tends to operate atfrequencies higher than those of human hearing. A human being can hear sound frequencies inthe range of 20Hz- 40kHz. There are two major sections in the sensor, the trigger and the echo.The trigger sends out a sound wave at a particular frequency.(iii)TestingThe equipment used in the testing phase are:(i)Arduino Uno(ii)Ultrasound HC-SR04(iii)Potentiometer to act as the target object(iv)Power supply(v)Ground(vi)Virtual terminal for display; an alternative is the LCD display
The values obtained from the ultrasonic sensor as tested are displayed using the virtual terminal as shownbelow,
desklib-logo
You’re reading a preview
Preview Documents

To View Complete Document

Click the button to download
Subscribe to our plans

Download This Document