Since the very beginning, humans and animals have used sound as an information medium and as a means of measurement. Bats can locate their position by means of ultrasound. Dolphins can detect shoals of fish and other objects underwater using ultrasonic frequencies of up to 120 kHz, and are even able to determine the heartbeat rate of other animals. Probably the oldest type of sonic measurement used by human beings is to count the seconds between seeing a bolt of lightning and hearing the thunder in order to determine just how near a storm really is.
The idea of exploiting such measuring techniques-albeit very much refined-for industrial purposes led to the development of ultrasonic sensors. These emit high-frequency sound pulses, inaudible to the human ear, and measure the time taken by the signals to return after being reflected from an object.
The robust sensors prove their capabilities in the most diverse applications, particularly through their ability to operate without any contact with the objects being measured or detected. This is even possible under extreme ambient conditions. Also impressive is their ability to detect accurately a vast range of different materials and colours.
It is exactly this huge potential variety of practical applications and the need to overcome traditional performance boundaries with product innovation that have driven microsonic for over 25 years. Since 1990, the internationally active company, headquartered in Dortmund, has concentrated on the development and production of innovative ultrasonic sensors for industrial automation technology.