A coupled bionic acceleration sensor and a preparation method thereof

By incorporating the biomimetic spider web structure design of the accelerometer, and combining elastic deformation and viscoelastic properties, the problem of sensors struggling to balance high sensitivity and large range has been solved, achieving self-powered operation and efficient measurement.

CN117538562BActive Publication Date: 2026-07-24JILIN UNIVERSITY +1
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Patent Information

Application Number
CN202311188196.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-09-14
Publication Date
2026-07-24
Estimated Expiration
2043-09-14

AI Technical Summary

Technical Problem

Existing accelerometers struggle to achieve both high sensitivity and a large range simultaneously. In the prior art, to achieve high sensitivity, sensors typically require more sensitive structures or materials, but this may limit the maximum acceleration range they can withstand.

Method used

A coupled biomimetic accelerometer is designed using a spider web-based viscoelastic material and stable structure. By utilizing the elastic deformation and viscoelastic properties of the spider web-like structure, combined with the contact method of the triboelectric layer, the sensitivity is improved in the small acceleration range, and the impact energy is absorbed in the large acceleration range, avoiding violent impacts on the triboelectric layer and achieving self-powered operation.

Benefits of technology

It achieves a balance between high sensitivity and large range, improving the sensor's sensitivity and range. At the same time, it achieves self-powered operation through electrostatic induction and triboelectric generation, overcoming the shortcomings of existing technologies.

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Abstract

The application discloses a coupling bionic acceleration sensor and a preparation method thereof. The coupling bionic acceleration sensor comprises a sensor shell, a spider web function layer, a mass block, a first electrode, a first triboelectric layer, a second triboelectric layer and a second electrode. The spider web function layer is arranged in the accommodating cavity and connected with the outer wall of the accommodating cavity. The center of the spider web function layer is provided with a boss. The spider web function layer adopts a spider web structure. The mass block is arranged above the center of the spider web function layer and connected with the upper surface of the boss. The first electrode is connected with the lower surface of the boss. The first triboelectric layer is connected with the lower surface of the first electrode. The second triboelectric layer is arranged at the bottom center of the accommodating cavity and corresponds to the position of the first triboelectric layer. The second electrode is arranged below the second triboelectric layer. The second triboelectric layer is arranged at the bottom center of the accommodating cavity through the second electrode. The application is based on the special viscoelastic material and stable structure of the spider web and proposes a coupling bionic acceleration sensor with high sensitivity, large range and self-power supply.
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