Ultrasonic Range Finder
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This project is to build a device that can find range between two objects by using
ultrasonic sound wave. Ultrasonic sound wave is cyclic sound pressure with a frequency
greater than the upper limit of human hearing. Ultrasonic wave will control and
generated by PIC 16F88 microcontroller. It will send through the transmitter and the
pulse reflects off an object and is re-::eived by receiver. The time from transmission to
reflect sound reception lets calculate the dist:.nce from the object. Transducer were ~.1sc
to convert sound signal wave from digital to analog signal and vice versa. The result of
distance will display on the Liquid Crystal Display (LCD). This device can find range up
to 3 meter using 40KHz transducer and 4 MHz internal oscillator frequency. Normally,
distance can be found by used standard device like mler and meter tape but sometimes
this device is not relevant in some situations like to find range between two cars while
this car is moving. Main objectives of this project is to build a device (using PIC 16F88)
that can measure the distance between two objects by using ultrasonic sound wave and
display result of distance on LCD display. With high frequency ultrasonic sound wave
that been used, it's should be no problem to get result of distance up to 3 meter.
Accuracy of this device is ± 3 em. This accuracy depend to the error that will be faced
from the others sound wave noise of the environment while using this devices. The
software mikroC and Proteus Virtual System Modeling (VSM) was used to make
programming and circuit for simulation. The Ultrasonic Range Finder device is
developed and validated, it can measure distance up to 3 meter by using ultrasonic sound
wave and display the result on the LCD panel.