Flexible fingertip pressure sensor and manufacturing method thereof

Abstract

The invention provides a flexible fingertip pressure sensor and a manufacturing method thereof. The sensor body is an intermediate elastomer of which the material is human body silica gel. The sensor body is internally provided with cylindrical holes. Liquid conductive metal solution is arranged in all the cylindrical holes. The cylindrical holes are regularly arranged into an array, and the first and the last cylindrical holes arranged in the first row are respectively provided with a lead port A and a lead port B. A lead A is led out of the lead port A, and a lead B is led out of the lead port B. The flexible fingertip pressure sensor is high in flexibility so that damage to the sensor caused by excessive force can be avoided; damage to the sensor caused by human sweat can be avoided and the protection performance of the sensor can be enhanced; the service life of the sensor can be enhanced; and the manufacturing method is simple and convenient, and the measuring range and the flexibility of the sensor can be adjusted by adjusting the size of a metal wire and the thickness of the intermediate elastomer.

Description

technical field [0001] The invention relates to the field of force sensors, in particular to a flexible fingertip pressure sensor. Background technique [0002] The force sensor is an important form and necessary medium for detecting and obtaining environmental information. It realizes the detection or perception of a series of physical characteristics when the object interacts with the environment, and then completes a certain task. With the development of information technology, people's demand for force information detection is increasing, and some special-purpose force sensors have emerged. In terms of detecting human hand information, there is little research on sensors used to detect precise pressure on fingertips. Such sensors not only ensure excellent pressure accuracy and sensitivity, but also require good wearing comfort with the human body. [0003] Traditional pressure sensors are mostly metal products, which are rigid and not suitable for wearing. Most of the ...

AI Technical Summary

Problems solved by technology

Most of the flexible wearable sensors that can detect contact signals on the market are designed with capacitive sensing. The elastic body used to make the capacitor is less comfortable to wear, and the deformation of the elastic body is small. When faced with large flexible deformation , the body of measuring components such as capacitance will be destructively damaged

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