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Detailed analysis of the principle of multihead weigher

2022/10/11

Author: Smartweigh–Multihead Weighter

The principle of multihead weigher, the multihead weigher adopts the continuous dynamic automatic weighing method to check the net weight of the object, coupled with the alarm or the automatic removal of tissue, so as to achieve the net weight inspection on the production line without shutting down. It is suitable for unloading shortage inspection of packaging bags and packaging carton products. When the raw material is transferred to the middle of the weighing platform, the working pressure is applied to the weight sensor, the sensor is deformed, and the characteristic impedance changes. In addition, the application encourages the working voltage to change and outputs a changed pulse signal.

The signal is enlarged by the operational amplifier and output to the analog-to-digital converter specially made by Mixinrui, which is converted into an analog signal that is easy to solve and output to Mixinrui's special microcontroller for calculation and operation. The results are exported to the display screen according to the key command and the optimization algorithm of Meixinrui, and the net weight data information of the information object is displayed. When weighing objects during activities, the dynamic weighing equipment composed of weight sensors and other parts is not a fully automatic automatic control system with closed-loop control, but a special-purpose data collection system software.

That is, the solution is carried out according to the characteristics and values ​​of the data signal obtained by the dynamic weighing equipment of Meixinrui, and the DC component proportional to the quality is separated from it. Therefore, the current dynamic weighing method can also be said to be based on signal analysis. a way to dominate. The accuracy caused when the measured value replaces the specific value depends on the influence of dynamic weighing and the dynamic characteristics of the weighing system software itself (ie, the transfer function of the weighing equipment).

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