send an intense light impulse to a defined location and measures the time until the signal returns, thus determining the distance to the object. By analyzing this information, sensors can determine the exact location, speed, and location of an object in a short period of time.
Products: Opening & safety sensor for barriers Radar or microwave sensors
emit microwaves with certain frequency in a defined area. These microwaves are reflected back to the sensor by all objects in its environment. Sensors are able to detect whether an object is moving and what direction it is moving.
Products: Vehicle detection sensor Infrared sensors
emit infrared light in a well-defined area and analyzes the reflections that come back. There are two types of infrared sensors:
- With background analysis: analyzes background and is triggered if there is any significant difference when compared to the original picture.
- With background suppression: analyzes the distance between sensor and object. It is mostly used when the background is likely to change (e.g. sensor is fixed on a moving door panel).
operate by transmitting ultrasonic energy and measuring the energy reflected by the target. These measurements are processed to obtain the object presence and speed. Ultrasonic detectors work perfectly well in any weather conditions.