Electronic scale and length measurement apparatus including a di

Weighing scales – Self-positioning – Electrical current generating or modifying

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Details

177229, G01G 314, G01G 308

Patent

active

047185074

ABSTRACT:
An electronic scale and length measurement apparatus including an electric transducer for providing an electrical signal indicative of the weight of an object to be measured and an electronic length measurement transducer for providing an electrical signal indicative of the length of an object to be measured. These signals are processed by an electronic signal processing circuit including a microprocessor and a ROM. The microprocessor derives values indicative of the weight and the length of an object to be measured which are then alternatively displayed on a liquid crystal display. The weight measurement transducer comprises a deflecting beam and a coil which is part of an oscillator circuit. Calibration of the device may be effected by means of a variable position aluminum disc connected to the deflecting beam for varying the apparent inductance of the coil. The length signal is provided by means of a pair of LED's, an apertured tape, and a pair of photocells. The apparatus also includes a store and recall function, a conversion subroutine for converting measured values into either English or metric units.

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