Multifunctional force cell sensor

Abstract

The invention discloses a multifunctional force cell sensor. The multifunctional force cell sensor comprises a cross elastic shaft, an output and input collecting ring, magnetic conductive connecting rods, a Fe-based nanometer microcrystalline alloy adhesion layer, excitation coils, measuring coils and an anti-magnetic interference shielding cover, wherein the four arms of the cross elastic shaft have the same length, the two ends in the vertical direction of the cross elastic shaft are provided with pulling force rings for pulling force measuring; the two ends in the horizontal direction of the cross elastic shaft are respectively provided with a shaft coupling for torque measuring and a pressure head for pressure measuring; the Fe-based nanometer microcrystalline alloy adhesion layer is attached to the bearing surface of the cross elastic shaft; the surface of the Fe-based nanometer microcrystalline alloy adhesion layer is wound by the measuring coils; the magnetic conductive connecting rods are connected with the end portions of the cross elastic shaft and thus a rhombus magnetic conductive steel frame is formed; the magnetic conductive connecting rods are wound by the excitation coils; and the whole sensor is arranged inside the anti-magnetic interference shielding cover. The multifunctional force cell sensor can measure not only pulling force and but also pressure and torque, and also has higher precision and sensitivity.

Description

technical field [0001] The invention relates to a force measuring sensor, in particular to a high-precision multifunctional sensor capable of measuring tension, pressure and torque. technical background [0002] At present, the largest load cell used in China is the resistance strain sensor. Its principle is to paste the resistance strain gauge on the elastic element subjected to the load under test, and the strain gauge converts the strain change of the elastic element into a resistance change. Changes in resistance are converted to changes in voltage, which are displayed and recorded to give the magnitude of the applied load. However, the resistance strain gauge is small, the sensitivity is average, it is greatly affected by temperature changes, and its anti-interference ability is poor. It is not suitable for working in harsh environments. The bonding quality of the strain gauge and the creep generated by long-term application have a great impact on the measurement accura...

AI Technical Summary

Problems solved by technology

However, the resistance strain gauge is small, the sensitivity is average, it is greatly affected by temperature changes, and its anti-interference ability is poor. It is not suitable for working in harsh environments. The bonding quality of the strain gauge and the creep generated by long-term application have a great impact on the measurement accuracy.

In addition, the commonly used force sensor has a single function. When the form of the load to be measured changes frequently, it is necessary to choose a variety of sensors.

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