Friction type power generation acceleration sensor

Abstract

The invention provides a frictional power generation acceleration sensor, which includes a shielding shell, and a first substrate capable of moving along the length direction of the shielding shell is arranged in the shielding shell, and the upper and lower sides of the first substrate are provided with the same polarity. The first dielectric material, the upper and lower inner surfaces of the shielding shell are respectively provided with a second dielectric material opposite in polarity to the dielectric material on the first substrate, the first dielectric material and the second dielectric material The size and position are consistent, the left and right sides of the first substrate are provided with springs, and the other ends of the springs are respectively connected to the left and right inner surfaces of the shielding shell. Compared with the acceleration sensor in the background technology, the friction-type power generation acceleration sensor has the advantages of no external power supply, high measurement resolution, wide measurement range, and simple structure.

Description

technical field [0001] The invention relates to an acceleration sensor device based on friction power generation technology. Background technique [0002] Acceleration sensor is a sensor that can measure acceleration and has a wide range of applications in urban infrastructure construction and management. At present, the commonly used capacitive acceleration sensor is proportional to the square of the displacement because the change in capacitance is proportional to the square of the displacement. In order to achieve high resolution, the structural size of the sensor needs to be increased, which limits its application; when the resistive sensor is faced with severe vibration, the output The linearity is very poor. In the test, it is necessary to introduce an external circuit or perform theoretical calculations for compensation to achieve accurate measurement. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a fri...

AI Technical Summary

Problems solved by technology

At present, the commonly used capacitive acceleration sensor is proportional to the square of the displacement because the change in capacitance is proportional to the square of the displacement. In order to achieve high resolution, the structural size of the sensor needs to be increased, which limits its application; when the resistive sensor is faced with severe vibration, the output The linearity is very poor. In the test, it is necessary to introduce an external circuit or perform theoretical calculations for compensation to achieve accurate measurement.

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