Ultrasound Height and Pressure Sensor



In the face of growing traffic volumes, higher risk of accidents, rising emission levels and more noise, we are developing technologies that enable the transport industry to overcome these challenges in urban agglomerations – and to make the leap into digitalization. Air springs can now be controlled electronically and automatically by our UHP sensors – for city buses, this means fewer energy losses and greater efficiency and safety.


  • Drivers always have an overview of the active air pressure of the springs
  • Electronically controlling the air springs with sensors is more efficient than doing this mechanically
  • In the future, the technology will enable anticipatory maintenance, reducing downtimes and accidents and making traffic safer

Technical data

  • The sensor transmits the active pressure and, using ultrasound, the precise height of the air spring
  • Values are sent to the electronic control unit. The ECU’s algorithms check whether a control intervention is necessary, and, if so, send signals to the electrically actuated valves that regulate the air supply as needed
  • Ride height target values for city and highway driving are saved in the electronic control unit

Sector pioneers

The electronic air spring: Our Ultrasound Height and Pressure Sensor (UHPS) enables the height of vehicles to be adjusted. The ultrasound technology measures the height and the pressure of the air springs and continuously sends the exact values to the electronic control unit. This electronic monitoring process prevents unnecessary energy losses from the air springs by automatically keeping the ride height at the target value – a technology that opens up new possibilities for the sector.

A glimpse into the future

We’re already thinking one step ahead: In the future, UHP sensors will be used not just to precisely measure the height and air pressure of the spring, but also to detect and transmit signals in the event of overload and disruption. These signals will reduce unexpected defects and thus vehicle downtime, as well as the risk of accidents. In a nutshell, we use anticipatory maintenance to ensure greater safety on the roads.