Sensor arrangement for detecting labels has control unit that alternatively activates even, odd number ultrasonic wave transmitters simultaneously; receiver output signals are assessed using threshold

摘要

The arrangement has a row arrangement of ultrasonic sensors (2), whereby the labels (4) of a track are detectable with respective sensors. Each sensor has an ultrasonic wave (6) transmitter (7) and receiver (8). A control unit alternatively activates respective adjacent transmitters in the row arrangement, whereby even number transmitters are activated simultaneously and alternately odd number ones are activated simultaneously. The receiver output signals are assessed using a threshold.