Hot Selling Transparent Tempered Glass Digital Bathroom Scale Body Weight Scale

 

An electronic scale is an instrument used to measure the mass of an object, and its working principle is based on force sensors and electronic technology. Below, we will provide a detailed introduction to the working principle of electronic scales.

1. Force sensor

The core component of an electronic scale is a force sensor, also known as a weighing sensor. Force sensors typically use the principle of strain gauges to measure the mass of an object. Strain gauges are a type of metal material that generates strain when subjected to external forces. By pasting a strain gauge onto an elastic body, when the mass of the object is applied to the elastic body, the elastic body undergoes deformation, resulting in strain on the strain gauge. The strain on the strain gauge can cause a change in resistance value, which can be measured by electronic circuits and converted into electrical signals.

2. Bridge circuit

The commonly used force sensor in electronic scales is a strain gauge sensor, which is usually assembled into a bridge circuit. A bridge circuit consists of four resistors, two of which are fixed resistors called excitation resistors, and the other two resistors are variable resistors on strain gauges. When the mass of an object is applied to an elastic body, the variable resistor on the strain gauge will undergo a change in resistance, resulting in a change in voltage difference in the bridge circuit.

3. AD converter

The voltage difference in bridge circuits is small and needs to be converted into a digital signal through an AD converter. An AD converter is an electronic device that can convert analog signals into digital signals. The AD converter in electronic scales is usually high-precision and can accurately convert small voltage differences into digital signals.

4. Digital processing

After the AD converter converts analog signals into digital signals, a series of digital processing is required. These digital processes include filtering, amplification, calibration, and other operations. Filtering is to remove interfering signals and ensure the accuracy of measurement results. Amplification is to increase the measurement range, allowing the electronic scale to measure a larger range of object masses. Calibration is to ensure the accuracy of measurement results, and it is usually necessary to calibrate the electronic scale before use.

5. Display

The measurement results of an electronic scale are usually displayed on a display. The display can be a liquid crystal display or an LED display, used to display the quality of an object. The monitor usually also provides some functions, such as unit switching, zeroing, storage, etc.

 

Summary:

The working principle of electronic scales is based on force sensors and electronic technology. The force sensor measures the mass of an object through a strain gauge, the bridge circuit converts the changes in the strain gauge into voltage difference, the AD converter converts the voltage difference into a digital signal, and digital processing filters, amplifies, and calibrates the digital signal. Finally, the measurement result is displayed on the display. The working principle of electronic scales makes them highly accurate, fast, and convenient, and they are widely used in commercial, industrial, household and other fields.

 

The principle and function of USB charging electronic scale are as follows:

The working principle of USB charging electronic scale mainly relies on the combination of electronic technology and pressure sensors to convert pressure into electrical signals, which are then amplified and processed by electronic circuits to output the signals to the display screen, thereby displaying the mass and weight of the object. Among them, USB charging electronic scales generally use rechargeable batteries or USB interfaces for power supply.

The functions of USB charging electronic scales mainly include weighing and measurement, with a wide range of uses. They can be used to weigh food, clothing, books and other items in daily life, as well as in commercial occasions such as supermarkets, markets, and other places. In addition, some high-end USB charging electronic scales also have various functions, such as pricing, calculating average price, peeling, and accumulating.

When using USB to charge electronic scales, there are some things to pay attention to. Firstly, it is important to avoid using in damp environments to prevent damage to sensors or circuits. Secondly, the electronic scale should be calibrated before use to ensure the accuracy of the measurement results. Finally, pay attention to protecting the surface of the electronic scale to avoid scratches or impacts.

 

 

 

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