Explosion-proof weighing module is to weigh powder or liquid materials with a single scale and mix them according to the selected formula. Used in chemical industry, food industry and other industries to determine the material level of silos and hoppers, to monitor the load, to measure the load of conveyor belts, or to protect industrial hoists and rolling mills from overload. Weighing equipment uses weighing module to collect the automatic proportion of weight signal, and adopts data operation and automatic adjustment to ensure the accurate measurement of weight signal. It has the functions of man-machine interaction, communication, display and storage, printing, etc., and has various functional screens related to operations such as data and graphic display, state monitoring, data input and information storage. It can realize real-time process data monitoring, simulation display of process flow, real-time data record consulting, operator authority setting, process parameter setting, setting operation process event alarm and manual and automatic control switching.

In addition to meeting the performance indicators required by the weighing instrument, the selection of weighing sensors should try to use sensors with consistent output sensitivity and input impedance, and connect them correctly in the wiring compensation box. The wiring compensation box should be installed near the weighing instrument in the metering room, and multiple sensors should be output in parallel, usually using a bridge power supply. When the sensitivity of sensors is compensated, the actual bridge supply voltage is set among multiple sensors, and the sensitivity of the first sensor is the smallest, so the bridge supply voltage is in a given range.

The nonlinear error characteristics of weighing module, the adaptive subsection compensation method of nonlinear error, in the upper limit of rated range, the compensation network based on radial basis function neural network is used to complete the nonlinear error compensation of sensor; In the lower limit region, a digital filter is used to complete the nonlinear error compensation. In the middle area, the weighing sensor does not compensate, and at the same time, the adaptive selection network is used to complete the selection of subsection compensation.

The connection of the weighing module determines the accuracy and stability of the weighing result. The Wheatstone bridge of the weighing sensor is formed by sticking the resistance strain gauge on the elastic body. When the elastic sensitive element does not bear the load, the resistance of the strain gauge remains unchanged, the bridge is balanced and the output voltage is zero. On the contrary, the resistance of the strain gauge changes, the bridge loses balance, and the weighing sensor outputs a voltage signal proportional to the weight of the measured load.

According to the principle of adaptive compensation, the weighing module completes the nonlinear error in the whole weighing range every time after collecting the weighing signal and preprocessing the data. Comparison of weighing output before and after adaptive nonlinear error compensation. Is the output before and after weighing compensation, in which "single RBFNN compensation" is the nonlinear error compensation within the full range by using a single RBFNN, and it is the nonlinear error output before and after weighing compensation.

When the weighing module is used, the technical and economic indicators such as its structural form and measurement characteristics should be correctly selected according to the selection principle to achieve the best performance-price ratio. After the weighing instrument is installed, it needs to be adjusted by sections and randomly. One of the main tasks is to adjust the load distribution of multiple weighing modules, that is, to adjust the stress consistency of sensors.

Weighing module converts mass (weight) into electricity, which is a mass (weight) measurement method. The output electric quantity signal and the input mass (weight) signal have a single-value linear correspondence, which has the required accuracy and high sensitivity, good frequency response characteristics and less inertia, has little influence on the state of the weighed object, and can work in poor environmental conditions; Good stability, reliability and long service life.

The adjustment of load distribution of weighing module is to reduce the influence of "static uncertainty" of multi-fulcrum balance of weighing platform by adjusting the force consistency of sensors, and ensure the stability of weighing platform support, so as to ensure that the center of gravity of weighing platform deviates without bearing capacity, and to ensure the accuracy of weighing instrument and relevant metering performance requirements.

The precondition of load adjustment of weighing module is mainly to check and adjust the installation quality of each component of weighing instrument, meet the technical requirements specified in technical documents such as technical standards, verification regulations and construction drawings, and put forward the necessary components and characteristics requirements. For the newly installed weighing instrument, all components should be thoroughly inspected.