Weighing scale is an electronic weighing device integrating modern sensor technology, electronic technology and computer technology. Weighing scales have a wide range of uses, which can be divided into weighing, printing, pricing, floor scales and so on. Because of the characteristics of the weighing scale itself, some things need to be paid attention to when using the weighing scale. First of all, the weighing scale needs to be preheated after the power is turned on, and the weighing can only be carried out when it displays 0, otherwise the weighing will be inaccurate. Secondly, ensure that the weighing scale is weighed in a horizontal state. Let's take a look at the relevant knowledge of weighing scales with Wuhan weighing scale manufacturers.

　　Human body weighing scale: In the electronic body weighing scale, four strain sensors are connected in series. Each sensor uses a dual chip. In a human body weighing system composed of four sensors, the black wires of the four sensors are connected in series and the white wires are connected in series. In this way, the four-capacity half-bridges form a full-bridge circuit, and the common red wire in each sensor serves as the power supply and output wire of the entire full-bridge circuit. The portable weighing scale has the advantages of simple and practical, convenient to carry, low cost, simple production, accurate measurement, high resolution, not easy to damage, and low price. It is used for home shopping. The circuit composition mainly includes a measurement circuit, a differential amplifier circuit, and a display circuit.

　　What is the principle of weighing? When an object is placed on the weighing pan, pressure is applied to the sensor, and the sensor is elastically deformed, so that the impedance changes, and the excitation voltage is used to change at the same time to output a changing analog signal. The signal is amplified by the amplifier circuit and output to the analog-to-digital converter. Converted into a digital signal that is easy to process, it is output to the CPU arithmetic control, and the CPU outputs this result to the display according to keyboard commands and programs.