System and method of installation for locating a hidden sensor e

Details System and method of installation for locating a hidden sensor e System and method of installation for locating a hidden sensor e

Filed on

1995-02-27

Date issued

1997-05-13

Examiner

Hofsass, Jeffery

Patent Class

Communications: electrical

SubClass

External condition vehicle-mounted indicator or alarm

SubSubClass

Transmitter in one vehicle only

Other Related Categories

340435, G08G 100

Type

Patent

Status

active

Patent number

056296908

Description

ABSTRACT:
To hide, and protect a transducer (2), such as an ultrasonic, infrared transducer or the like, located on an outer surface part (1) of a vehicle, for example within a recess in a bumper, from vandalism or other damage, the transducer is located on the outer surface part (1) to be flush with the outer surface thereof, and a cover (4) is located on said outer surface part. The outer surface part (1), as is customary has a predetermined surface shape or contour, and the outer surface cover (4) matches and engages that predetermined outer surface part of contour. Preferably, the transducer is an ultrasonic transducer terminating in a membrane (3) which is located flush with the outer surface of the outer surface part (1), and acoustically coupled, for example by an adhesive (5), with the outer cover (4) to reduce damping of signals from the transducer, and of echo signals from an object received by the transducer, and passing through the outer cover. The material of the cover is preferably so selected that it has sufficient hardness and stiffness for good matching with the transducer. The method and system is suitable for combination with a parking assistance system (10, 11). The cover location of the transducer (2) prevents visual identification of the transducer, so that there is no interference with the visual aspect of the vehicle, and damage to the transducer, inadvertently or by vandalism, is effectively eliminated.

REFERENCES:
patent: 4636997 (1987-01-01), Toyama et al.
patent: 4766421 (1988-08-01), Beggs et al.
patent: 4891624 (1990-01-01), Ishikawa et al.
patent: 4994800 (1991-02-01), Milliken
patent: 5394292 (1995-02-01), Hayashida

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