DEUTA radar sensors

DEUTA radar sensors are contactless in operation, and use the Doppler microwave principle to calculate measured values. Their integrated digital signal processor (DSP) performs the requisite evaluation algorithms within the device itself, and the speed, distance, direction, and acceleration values are then output via serial interfaces and pulse outputs. The sensors also provide information about their own operating mode and status.

These systems are used on railway vehicles to measure the speed over the ground. Incorporation of intelligent DEUTA sensors ensures that the vehicle control system offers the maximum degree of versatility and safety.

The patented algorithm for measuring the instantaneous speed has been specially optimised for applications such as traction control and measurement at high rates of acceleration. These are the conditions encountered in applications such as metro trains (both mass-transit and goods traffic).

This involves a special dual-beam algorithm for analysing the Doppler signals, optimised for high precision and a speed range of up to 600 km/hr. The data is transmitted over a serial RS485 interface in the form of data packets. The protocol is aligned to the client's specific requirements, and contains information on the status of the signal processing. Parameters derived from the speed, such as distance and acceleration, are provided in the protocol. Type DRS05/1S1 dual-channel Doppler radar sensors with integral protective hood (optional steel plate for increased protection against impact of stones).

"The casing, featuring integrated high speed protection, increases durability when the unit is subjected to the impact of stones and improves availability in winter conditions. This is the recommended solution for high-speed trains with ETCS/ERTMS systems.

If it is not possible to mount the sensor within the cladding of the undercarriage, an optional protective plate can be used (tested up to 400 km/hr)."