Ultra sonic distance measurement - a good starting point for experimentation

10-24 — elektor october 1982 ultrasonic distance meter Measuring distances is not difficult, especially when the right equipment is available. Modern technology has certainly done away with the old comical approach of measuring the shelf size by spreading your arms out. For short distances a simple ruler will do, but, in surveying, everything from, chains, theodolites, and sonic equip- ment is used. The main advantage of using ultrasonic sound is, that the need for any mechan- ical parts is completely eliminated, simplifying construction considerably. In practice we found the circuit to be accurate upto about 10 metres, which is very good considering the circuit is ultrasonic distance measurement a good starting point for experimentation There are several ways to measure distances. The method adopted depends not only on what is being measured, but also on your occupation. The circuit described utilises ultrasonic sound, working on the principle that as, sound travels through the...