| 摘要 |
PURPOSE: An electronic scales is provided to be capable of weighing exactly without a temperature variation by compensating a weighing error. CONSTITUTION: An amplifier and low pass filter part(2) amplifies an output of a load cell part (1) and eliminates a noise of the output. A temperature sensor(3) senses a temperature of the load cell part according to a variation of a temperature. A voltage sensing part(6) measures a voltage transferred from a power supply part(4). The temperature sensor part(3), an A/D convertor(8) and a microcomputer(10) calculate a temperature variation outputted from the temperature sensor(3) to compensate a weighing error of an electronic scales which is generated owing to a characteristic variation of the load cell part and other electronic elements according to a temperature variation.
|
