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Flexible stretchable sensor

A sensor and stretching technology, applied in the field of sensors, can solve the problems of flexible and stretchable sensors that are easily damaged, unreasonable circuit design, and inaccurate detection results, so as to reduce the number and complexity of leads, optimize layout, and ensure The effect of working performance and precision

Active Publication Date: 2019-02-15
BEIJING MECHANICAL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the embodiment of the present invention aims to provide a flexible stretchable sensor to solve the problems of fragile, inaccurate detection results and unreasonable circuit design in existing flexible stretchable sensors

Method used

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Examples

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Embodiment 1

[0047] A specific embodiment of the present invention discloses a flexible and stretchable sensor, such as figure 1 As shown, it includes an M×N array formed by arranging M×N detection units. Wherein, each detection unit includes a stretchable part and a non-stretchable part; the sensing module of each detection unit is arranged on the non-stretchable part, and the transmission wire provided by the stretchable part and the transmission wire of the adjacent detection unit Sense module connection.

[0048] The non-stretchable part is used to collect external sensing information through the sensing module after the detection unit is gated, and convert the external sensing information into electrical signals, which are transmitted to the processor for processing in the form of electrical signal transmission . The processor can be a computer.

[0049] figure 1 The middle non-stretchable part shows circular structures, but is not limited to circular structures.

[0050] The str...

Embodiment 2

[0055] To improve on the basis of Example 1, the stretchable part can adopt a bridge-like structure, and the non-stretchable part can adopt an island-like structure, such as figure 2 shown. The bridge-like structure is long and curved, and can be stretched. The islands are blocky and cannot be stretched.

[0056] The island structures are arranged in an array, and all the island structures are connected by corresponding bridge structures. Combination of bridge structure and island structure design. Among them, the bridge-like structure ensures that the entire system has good stretchability, and the non-stretchability of the island-like structure ensures that the sensing module on it is not stretched, thus retaining the working performance and precision.

[0057] Preferably, in each detection unit, the stretchable part includes a tough base material structure 1 and a transmission wire. The transmission wire is disposed on the upper surface of the flexible base material st...

Embodiment 3

[0067] Another embodiment of the present invention discloses a method for preparing the flexible and stretchable sensor described in Embodiment 2, comprising the following steps:

[0068] S1. Preparation of tough substrate layer 1.

[0069] S2. On the first tough substrate layer, prepare an M×N array formed by arranging M×N sensing modules, and connecting wires for each sensing module.

[0070] S3. Depositing a tough substrate layer 2 on the M×N array and the connecting wires of each sensing module. The tough base material layer 2 is in contact with the tough base material layer 1 surface, and covers the entire M×N array and the connecting wires of each sensing module.

[0071] S4. Etching the tough substrate layer 1 and the tough substrate layer 2 to prepare a stretchable part and a non-stretchable part of the flexible stretchable sensor, wherein each stretchable part includes a connecting wire , each non-stretchable part includes a sensing module.

[0072] S5. Transfer th...

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Abstract

The invention relates to a flexible stretchable sensor, belongs to the technical field of sensors, and solves the problems that the existing flexible stretchable sensor is easy to be damaged, the detection result is inaccurate, and the circuit design is unreasonable. The flexible stretchable sensor disclosed in the invention comprises an M x N array formed by arranging M x N detecting units. Eachof the detecting units comprises a stretchable portion and a non-stretchable portion. A sensing module of each detecting unit is arranged in the non-stretchable portion, and is connected to the sensing modules of the adjacent detecting units by wires arranged on the stretchable portion. When the flexible stretchable sensor is used, a macroscopic stretching function is achieved by the stretchable portion without affecting the detecting function of the non-stretchable portion. According to the structural design of the non-stretchable portion, the electrical performance deterioration caused by stretching the sensing module can be avoided, and the value read by the sensor is stable and reliable. Moreover, the overall system structure size is small, the control circuit is simple, and the cost is low according to the array design.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a flexible and stretchable sensor. Background technique [0002] The skin is the largest sensory organ in the human body, which has the characteristics of softness, extensibility (stretchability), array and good perception. Electronic skin simulates human skin in terms of function and structure, and is generally realized by flexible and stretchable sensors. [0003] Existing flexible and stretchable sensors are generally realized by disposing flexible sensors on a flexible substrate. When the flexible substrate is stretched, the flexible sensors and corresponding electronic devices disposed above it will also be stretched. The flexible sensor is a high-precision sensor, and its sensitivity is directly related to the structure, material and electrical properties of the sensor. During the stretching process, due to the distortion of the flexible sensor structure, the modification...

Claims

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Application Information

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IPC IPC(8): G01D5/12
CPCG01D5/12
Inventor 刘立滨许诺臧金良李平刘宇航刘秀洁
Owner BEIJING MECHANICAL EQUIP INST
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