Ultrasonic Sensors

How we work
We ultrasonic sensors react to vibrations of the air, which means we cause vibrations and pick up these vibrations again when they have been reflected from an object. By recording the time difference between emission and pick-up of the sound, we are able to calculate the distance between the object and the sensor. This action is comparable with that of echo sounders like those used in shipping to measure the water depth. The only difference is in the transport medium for the sound wave - in one case it is water and in the other it is air.

What we can do
We are able to recognize the distance to an object, provided this object can reflect sound. In the process we produce a variable voltage (0 to 10 V) or a variable current (4 to 20 mA) in a direct relationship to the distance measured. Of course we also function as a switch and react automatically as soon as the object recognized is within a certain distance. Due to our special properties, we are used whenever an object has to be recognized without touching it directly.This opens up a wide field of applications. For example, we can recognize the filling level of a tank, we can count objects on a conveyor belt or we can determine the presence of euro pallets on a transport system. In addition, we can recognize even the smallest of objects, and ensure in the pharmaceutical industry, for example, that the same number of tablets are filled into a packaging unit.

What makes us so special
We can recognize objects completely independently of shape, color or material, which means that we can recognize colored objects made of synthetic material the same way as we can detect objects made of wood or different metals. As our micro vibrations have a self-cleaning effect, we ultrasonic sensors are ideal for use under rough or dusty environmental conditions. We are able to recognize objects at distance of between some centimeters and up to six meters.