Method and circuit arrangement for continuous contactless distance measurement

摘要

The invention is used in contactless distance measurements, particularly in the spatial orientation of non-stationary production machines. According to the invention, a defined number of ultrasonic pulses having a defined duty ratio is transmitted, the ultrasonic pulses reflected from the obstacle being counted, the same duty ratio being present, and when a preselected number of received pulses is reached, the respective distance values from the obstacle are determined in accordance with the transit-time measurement, known per se. <IMAGE>