The weighing sensor uses the compensation network based on radial basis function neural network to complete the nonlinear error compensation of the 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 selection of subsection compensation is completed by using the adaptive selection network. The piecewise compensation model of nonlinear error is established to obtain good compensation effect.

Weighing sensor is a kind of mass (weight) measurement method that converts mass (weight) into electricity through the stressed structure. The output electric quantity signal and the input quality (weight) signal have a single value linear correspondence; It has the required accuracy and high sensitivity; It has good frequency response characteristics and less inertia; Little influence on the state of the weighed object; Able to work in poor environmental conditions; Good stability, reliability and long service life.

The anti-roll weighing sensor is accumulated through the junction box and transmitted to the weighing instrument, which displays the weight of the material in the current weighing in real time through A/D conversion. The displayed weight data is transmitted to PLC through serial communication, and the PLC compares the collected weight of the weighing module with the weight set in the touch screen (or computer) of the electronic scale to control the action of the whole reaction kettle. It adopts high-performance configuration software, has a complete Chinese interface, and has real-time data display, flow and temperature control curves, alarm and operation records, complete production reports and other management functions.

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.

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 shall be installed near the weighing instrument in the metering room.

The weighing sensor is stretched and thinned under the tension, and then the resistance increases, that is, the metal resistance changes with the strain. The weighing sensor is a conversion device used to convert the weight signal or pressure signal into the electric signal. The construction principle of the weighing sensor is that the metal resistance has the characteristic of blocking the current flow.