Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control
Patent
1992-10-14
1994-08-23
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Echo systems
Returned signal used for control
367909, 340904, G01S 1500
Patent
active
053413440
ABSTRACT:
A method and apparatus for detecting objects around a vehicle, comprising a plurality of microwave-transceiver sensors for transmitting microwave signals to reflect off objects around the vehicle. The reflected signals are received and passed to a control unit for comparing the received signal to a transmitted signal to determine whether a detected object constitutes a threat to the moving vehicle. An alarm means is connected to the control unit and activates upon the receipt of an alarm signal when the control unit determines a detected object constitutes a threat to the vehicle.
REFERENCES:
patent: 4148028 (1979-04-01), Fujiki
patent: 4677595 (1987-06-01), Obayashi et al.
Hayes, Jr. Leo C.
Nishyama Takaaki
O'Brien Stephen W.
Meier Harold E.
Optical Detective Systems, Inc.
Pihulic Daniel T.
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