During weighing, the metal frame of the electronic scale is stressed and deformed, and the metal wire on the patch is also stretched or shortened, so the resistance of the metal wire changes, and the data of the weighed object is obtained by measuring the resistance change of the metal wire.
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The electrical parameters obtained by the deformation of the wire are amplified by the circuit, zeroed by the circuit, analog-to-digital conversion (A\/D conversion), and decoded by the circuit to drive the digital tube to display the numbers.
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In simple terms, the electronic scale collects weight through the pressure sensor, and converts the collected weight information into standard kilograms through the electronic chip, and the number is output by the display screen.