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Obstacle-detection system

  • US 5,341,344 A
  • Filed: 10/14/1992
  • Issued: 08/23/1994
  • Est. Priority Date: 10/14/1992
  • Status: Expired due to Fees
First Claim
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1. A system for detecting objects around a vehicle comprising:

  • a plurality of microwave-transceiver sensors mounted to the vehicle for transmitting microwave signals having a first phase and receiving microwave signals reflected from objects around the vehicle and having a second phase;

    a phase comparator for comparing the transmitted microwave signal having the first phase with the received microwave signal having the second phase, said comparator generating an output signal in response to the phase comparison of the first phase and the second phase;

    a control processor responsive to the output signal of the comparator and generating an alarm signal, the control processor including means for altering a scanning pattern of a sensor in response to the speed of the vehicle; and

    alarm means for generating an alarm in response to the alarm signal received from the control processor.

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