Load cell having digital output

Details Load cell having digital output Load cell having digital output

1988-09-02

1989-06-13

Miller, Jr., George H.

Weighing scales

Self-positioning

Electrical current generating or modifying

177229, 7386259, G01G 314, G01G 308, G01L 110

Patent

active

048383694

ABSTRACT:
Apparatus for measuring force, useful in a weighing scale for example, includes a parallelogram-like load cell structure that deflects in response to application of the force to be measured, and a pair of force-sensitive crystal resonators, attached to cantilever sensor beams forming part of the structure for sensing the deflection of the load cell structure. The two resonators are attached to the sensor beams such as to be placed in tension and compression, respectively, upon deflection of the structure and thereby cause their vibration frequency to increase and decrease, respectively, with increases in applied force. The difference between the two frequencies, which varies substantially linearly with changes in applied force and is inherently digital in nature, is used as a measure of the force applied to the load cell structure.

REFERENCES:
patent: 4526247 (1985-07-01), EerNisse et al.
patent: 4587853 (1986-05-01), Komoto et al.
patent: 4623813 (1986-11-01), Naito et al.
patent: 4743790 (1988-05-01), Albert
patent: 4751849 (1988-06-01), Paros et al.

Affiliated with

Also associated with

Rating

Load cell having digital output does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Load cell having digital output, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Load cell having digital output will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1269980