Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent
1987-09-30
1990-08-14
Buczinski, Stephen C.
Communications, electrical: acoustic wave systems and devices
Echo systems
Distance or direction finding
367902, 901 33, G01S 1508
Patent
active
049493213
ABSTRACT:
An ultrasound echo profile sensor for use as a tactile sensor, having an ultrasound measuring head containing a transmitter and a receiver and also having an entrained reference reflector by means of which the current speed of sound of the ambient air can be identified. The respective distance of the tactile sensor from a sensor subject can be correctly measured independently of the variable speed of sound of the ambient air because a reference echo caused by the reference reflector can be discriminated from situation echoes on the basis of its known, proximate position. The reference reflector, whose distance from the ultrasound receiver is constant in the reference case, is arranged such that the distance between the ultrasound receiver and the reference reflector changes in a characteristic way given tactile contact between a sensor head and the sensor subject, particularly a workpiece.
REFERENCES:
patent: 4161885 (1979-07-01), Sack et al.
patent: 4327427 (1982-04-01), Hotta et al.
patent: 4543649 (1985-09-01), Head et al.
patent: 4634947 (1987-01-01), Magori
patent: 4704909 (1987-11-01), Grahn et al.
Buczinski Stephen C.
Siemens Aktiengesellschaft
Swann Tod
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