The Work Principle Of Load Cell

How the load cell(wireless dynamometer with shackels & display) works?

The traditional analog load cell outputs an analog signal. As the name implies, the digital load cell outputs a digital signal. Because the principle of analog load cell resistance strain conversion determines its inherent output analog signal, short output distance, poor anti-interference ability, inconvenient installation and adjustment, etc., as early as the 1980s, people built in the sensor housing to enlarge And the A/D conversion circuit, namely analog sensor + digital transmission (amplification and A/D circuit), constitutes the * digital "digital load cell", which overcomes the small signal of the analog load cell and the short transmission distance. Disadvantages such as poor anti-interference ability. However, since the various indicators of the sensor are determined by their own manufacturing, compensation and adjustment processes, they have not broken through the original functions. Currently, the use of such sensors is relatively common. The second generation of digital load cells is based on the * generation of intelligent compensation for sensor software, called digital intelligent load cells. Through the digital compensation circuit and process, linearity, hysteresis, creep and other compensation can be performed. The built-in temperature sensor can realize real-time temperature compensation through the compensation software, and the address can be adjusted, which is convenient for application and interchange, remote diagnosis and correction. In general, the digital intelligent sensors at this stage are mainly reflected in the intelligent compensation and correction of the sensors themselves. However, in a strict sense, the intelligence of digital intelligent sensors is not only reflected in the intelligent compensation and correction of the sensor itself, but more importantly, the application is intelligent.

The third generation of digital intelligent load cells (tension dynamometers) consists of analog sensors, digital transmission (amplification and A/D conversion), sensor software compensation and intelligent automatic control software, which has sensitive functions and can be called All or most of the functions of heavy signal detection and processing, logic judgment, closed loop control, two-way communication, loop self-test and self-diagnosis, automatic correction and compensation, automatic calculation, etc., overcome the shortcomings of the second generation digital load cell. It can be either a monolithic integrated structure or a separate modular structure. Zui's new third-generation digital intelligent load cells have been used in a variety of intelligent closed-loop control multi-purpose, multi-component measurement and high-speed dynamic digital signal processing and network communication applications.

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