DESIGN AND CONSTRUCTION OF DIGITAL DISTANCE MEASURING INSTRUMENT
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- NGN 3000
ABSTRACT
Distance measurement plays a vital role in engineering, science and business. The distance is always measured between two points. Generally distance measurement is possible only by making contact with the target whose distance is to be measured, but this project discusses the measurement of distance by digital measuring instrument. This is done by providing a circular object (wheel) of about one meter in circumference. Here the distance is calculated by the number of revolution or circulation of the wheel multiplied by the total circumference of the wheel. This device also makes the use of microcontroller for calculating the distance and displaying it on a seven segment display. The digital measuring distance instrument can measure a distance up to 1000 meter. The result obtained from practical distance measurement showed that compared to the use of tape rule, this digital distance measuring instrument is faster and easier. However it has higher error rate since fraction of revolutions are not detected. It is recommended that improvement of the efficiency of this device be made by employing a software that can directly convert number of revolutions to distance.
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