Digital output force sensor using surface acoustic waves

Details Digital output force sensor using surface acoustic waves Digital output force sensor using surface acoustic waves

1976-12-20

1978-08-15

Grimm, Siegfried H.

Oscillators

With device responsive to external physical condition

73 885R, 73DIG4, 331 40, 331107A, 333 72, G01L 116, H03B 532, H03B 2100

Patent

active

041076265

ABSTRACT:
A sensor developing a digital output in response to force induced deflection in which the deflection is of a beam formed to have, under stress, a surface undulate in both compression and tension. The signal is developed from piezoelectric transducers connected in a pair of oscillator circuits utilizing surface acoustic wave paths through, respectively, the tension and the compression portions of the beam surface. The frequencies of the oscillators are compared and the frequency difference resulting from beam deflection is sent as a signal to a counter to give a digital read out of the force causing the deflection. The beam is formed of steel and the piezoelectric surface for the surface waves and the interdigitated conductors forming the transducers are deposited by thin film techniques on the beam.

REFERENCES:
patent: 3341796 (1967-09-01), Eisele
patent: 3786373 (1974-01-01), Schulz et al.
patent: 3868608 (1975-02-01), Williams
patent: 3878477 (1975-04-01), Dias et al.
patent: 3916348 (1975-10-01), Toda et al.

Affiliated with

Also associated with

Rating

Digital output force sensor using surface acoustic waves does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital output force sensor using surface acoustic waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital output force sensor using surface acoustic waves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1438849