Radar sensors

Carwash vehicle positioning and measurement

• The radar sensor measures car position and size, allowing ideal brush positioning in drive-through and tunnel car-washes.
• The sensor signal is unaffected by water spray and associated cleaning agents.

Height regulation of arms e.g. of cranes

• The radar sensor measures the height of the arm relative to the ground or a corner cube.
• The sensor signal is unaffected by adverse environmental conditions.

Distance measurement to flat or round objects

For flat objects it is very important that the tilt of the surface is not greater than half the opening angle. This is to ensure that radar beams reflected from the surface are reflected back into the sensor for proper detection. Round objects have the advantage that they are rotationally symmetric. This makes alignment much easier, as round objects always reflect something back to the sensor. Compared to a flat object with comparable size, the signal strength of the reflected  beam is reduced.

Distance measurement through a cover

Radar beams can penetrate certain materials (such as plastic panes). The covers do not require full transparency to be penetrated by radar beams. For example it is possible to look through black plastic sheets. A small portion of the radar beam will be reflected back to the sensor from the cover. Through a special teach-in-algorithm the sensor learns the profile of the reflection. It subsequently measures objects behind the cover, as if the cover is none-existent.

Radar barrier for the most reliable object detection

The radar sensor is also available in a configuration, where it operates similar to a light barrier. Via a special teach-in-algorithm the sensor learns the reflector position. After teaching the sensor monitors the reflector position. If an object breaks the line of sight between the sensor and reflector, the sensor output switches. The advantage of this configuration is that it is unnecessary for the object to reflect a signal back to the sensor. Therefore even randomly-shaped objects or radar absorbing objects can be reliably detected.

Radar sensors based on Frequency Modulated Continuous Wave (FMCW) technology

• Baumer radar sensors use FMCW technology
• The distance and relative speed of an object can be measured
• The use of high frequencies creates a compact design and a narrow beam profile

proTect+ impermeability concept

• Sensors remain reliable and impermeable over their entire service life 
• Shock-tested over the entire temperature range to simulate aging effects
• IP 69K protection against ingress of dust and high temperature, high pressure water