RADAR VEHICLE BRAKING CONTROL

摘要

In a vehicle braking control system, particularly for a giant earth moving vehicle, an F.M.C.W. radar feeds an antenna 1 at the rear of the vehicle. Reflections are received via the same antenna 1, mixed with transmitted energy to provide a difference frequency and submitted to a frequency selective receiver 5, the output of which will thereby be limited to responses within a given range behind the vehicle. Output from the receiver is passed into two channels. One channel contains a frequency-to-voltage convertor 7 followed by a threshold detector 9 which is set such that a signal is passed to an alarm output terminal 10 if a man-sized or larger target is detected. The other channel contains a narrow band-pass filter 8 followed by a frequency to voltage convertor 11 and a threshold detector 12 the output of which is connected to another output terminal 13. The settings of filter 8 and threshold detector in the second channel are such that targets constituted by discontinuities in the ground (such as tip edges) are detected. Both output terminals are connected to the vehicle braking system.