Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control
Patent
1983-08-22
1986-08-12
Farley, Richard A.
Communications, electrical: acoustic wave systems and devices
Echo systems
Returned signal used for control
367 99, 367107, 367908, G01S 1512
Patent
active
046060154
ABSTRACT:
An apparatus for detecting the position of an object with an ultrasonic wave includes a timing control circuit generating first and second timing signal trains, the interval of the first timing signal trains being set to be shorter than that of the second; an ultrasonic wave pulse generator circuit generating first and second ultrasonic wave pulses in synchronism with the first and second timing signal trains, the first ultrasonic wave pulses covering a short distance range to the object and the second ultrasonic wave pulses covering a long distance range to the object, the width of the first ultrasonic wave pulse being set to be shorter than that of the second. An ultrasonic wave pulse transmitter transmits alternately the first and second ultrasonic wave pulses; a receiver receives the reflected first and second ultrasonic wave pulses from the object; and a discriminator circuit discriminates the reflected first and second ultrasonic wave pulses from the receiver. A position decision determines the position of the object in accordance with a time interval between the transmission and reception of the discriminated first and second ultrasonic wave pulses; and a signal timing change-over circuit changes over the generation of the first and second timing signal trains from the timing control circuit to only the first timing signal train when the position of the object is determined to be in the short distance range by the position decision circuit.
REFERENCES:
patent: 3184969 (1965-05-01), Bolton
patent: 3787802 (1974-01-01), Brahman
patent: 3985030 (1976-10-01), Charlton
patent: 4000650 (1977-01-01), Snyder
Farley Richard A.
Hitachi , Ltd.
LandOfFree
Method and apparatus for detecting position of object with ultra does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for detecting position of object with ultra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for detecting position of object with ultra will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1947869