Electrostatic self-powered strain grid sensor

An electrostatic self-powered strain grid sensor configured to measure strain of a component to be measured, wherein the electrostatic self-powered strain grid sensor comprises:

• a slide groove (1) having a U shape, wherein an upper end of the slide groove (1) is opened to form an opening;
• a slide sheet (2) is inserted in the opening, is parallel to a bottom surface of the slide groove (1), and has a same length as the bottom surface of the slide groove (1);
• a slide plate (21) is fixed to a bottom surface of the slide sheet (2) and is perpendicular to the slide sheet (2);
• and the slide plate (21) is perpendicular to a direction along which the slide sheet slides;
• wherein one end of a top surface of the slide groove (1) is fixed, via a connection component (3), to the component to be measured;
• a sensor array is arranged at the bottom surface of the slide groove (1) and comprises a plurality of sensor units each of which has a strip shape and each of which is parallel to the slide plate (21);
• and the slide sheet (2) is inserted from another end of the slide groove (1), and an end of the slide sheet (2) is fixed to the component to be measured;
• wherein a sensor unit having a strip shape is arranged at a lower end of the slide plate (21);
• the plurality of sensor units of the sensor array and the sensor unit arranged at the lower end of the slide plate each are provided with both a metal electrode layer and a dielectric material layer in sequence;
• a dielectric material layer of each of the plurality of sensor units of the sensor array and a dielectric material layer of the sensor unit arranged at the lower end of the slide plate are in contact with each other and have opposite polarities;
• and after a metal electrode layer arranged at the lower end of the slide plate (21) is connected to an ammeter, the metal electrode layer arranged at the lower end of the slide plate (21) is connected to a plurality of indicator lights that is connected in parallel, and each of the plurality of indicator lights is connected to a metal electrode layer of one of the plurality of sensor units of the sensor array.