The working principle of the weighing machine is:
It is composed of electronic components (weighing sensor, amplifying circuit, AD conversion circuit, MCU circuit, display circuit, keyboard circuit, communication interface circuit, voltage stabilized power supply circuit, etc.).
Workflow description of weighing machine:
When the object is placed on the weighing plate, the pressure is applied to the sensor. The sensor is deformed, so that the impedance changes. At the same time, the excitation voltage is changed to output a changed analog signal. The signal is amplified and output to analog-to-digital converter. The converted digital signal is easily processed and output to CPU operation control. The CPU outputs this result to the display according to keyboard commands and programs.