Weight measuring apparatus of vibration type

Details Weight measuring apparatus of vibration type Weight measuring apparatus of vibration type

1985-04-05

1986-10-21

Miller, Jr., George H.

Weighing scales

Self-positioning

Electrical current generating or modifying

177185, G01G 314, G01G 2310

Patent

active

046180141

ABSTRACT:
An apparatus for measuring a weight including a tuning fork vibrator to produce an oscillation signal having a frequency determined in accordance with a weight applied to the vibrator, a circuit for detecting an abnormal increase in an amplitude of the oscillation signal due to disturbing vibration to produce an abnormal signal, a frequency counter for counting the number of waves of the oscillation signal except for a period during which the abnormal signal is generated and a data processor for resetting the frequency counter each time the frequency counter has counted waves of the oscillation signal for a predetermined period and calculating a measured weight from a count value of the frequency counter.

REFERENCES:
patent: 3670833 (1972-06-01), Tomohiko et al.
patent: 4418774 (1983-12-01), Whitney et al.
patent: 4531600 (1985-07-01), Langlais et al.
patent: 4553619 (1985-11-01), Fujinaga

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