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Multi-mode cell-variable flexible sensor and signal acquisition system

A flexible sensor, multi-modal technology, applied in the field of flexible sensors, can solve problems such as loss of function, difficult to determine whether the measurement results are accurate, and inability to fill positions, so as to reduce the number of interfaces, improve resource utilization, and improve space utilization. Effect

Active Publication Date: 2020-04-14
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the robot has a super electronic skin that exceeds the sensitivity and function of human skin, the scale of the sensor will be greatly increased
In addition, each unit is an independent sensing module, and its occupied space and the number of interface leads do not interfere with each other, which will result in a large number of port leads required by the device
[0004] Most of the existing flexible sensors have a single function, and multi-functional flexible sensors are usually implemented by superimposing and distributing various functional module units. The current arrangement of multi-modal sensing units has a common defect: the ports of the sensing units and The total number of leads is the sum of the number of ports and leads of each sensing unit, so in high-density integration, it takes a lot of hardware resources and the wiring layout is very difficult
In addition, a sensor has only one function, and it is difficult to determine whether its measurement result is accurate, and once the sensor is damaged, it loses the corresponding function and cannot be supplemented by other sensors, resulting in a decrease in the reliability of the sensor

Method used

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  • Multi-mode cell-variable flexible sensor and signal acquisition system
  • Multi-mode cell-variable flexible sensor and signal acquisition system
  • Multi-mode cell-variable flexible sensor and signal acquisition system

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Experimental program
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Effect test

Embodiment 1

[0101] In this embodiment, the first electrode is used as the upper electrode layer, the third electrode is used as the lower electrode layer, the spacer layer includes a dielectric layer and a piezoelectric layer, a flexible sensor, and the main part includes a total of five-layer structures, such as Figure 7 As shown, from top to bottom are the first electrode 1001, the dielectric layer 1002, the second electrode 1003, the piezoelectric layer 1004, and the third electrode 1005. The first electrode can be used as an electromagnetic wave absorbing layer, and the second electrode 1003 can be used for For measuring strain and humidity sensing layers, the third electrode 1005 can be used to measure temperature. Among them, the first electrode 1 has one pin G, the second electrode 1003 has three pins A, D and F, and the third electrode 1005 has three pins B, C and E. Each unit cell of the flexible sensor has a total of 7 pins. pins. The thickness of the whole device is 20-30 μm,...

Embodiment 2

[0125] like Figure 14 As shown, a flexible variable mode sensor for monitoring physiological information, the sensor includes an upper electrode layer, a piezoelectric layer and a lower electrode layer, and the piezoelectric layer is a spacer layer, wherein:

[0126] The upper electrode layer and the lower electrode layer have the same structure, such as Figure 15 and 16 As shown, the upper / lower electrode layer includes three parts of electrodes, the first part of the electrode is connected at both ends to form a closed serpentine shape, this part of the electrode is provided with a first pin, the second part and the third part have the same structure , in the shape of a sensitive grid, distributed on both sides of the first pin, and the angle between the second part and the third part is 90 degrees. In this embodiment, the direction of the second part of the electrode is the x-axis direction, and the third part The direction of the electrode is the y-axis direction, the ...

Embodiment 3

[0159] In this embodiment, the bottom electrode 3005 is used as the lower electrode layer, the top electrode 3008 is used as the upper electrode layer, and the spacer layer is the intermediate dielectric layer 3006, such as Figure 21As shown, the flexible sensor includes a capacitive layer. The capacitive layer is, from bottom to top, a bottom flexible substrate 3004, a bottom electrode 3005, an intermediate dielectric layer 3006, a conductive electrode 3007, a top electrode 3008, and a top flexible substrate 3009. The bottom flexible substrate The bottom 3004 and the top flexible substrate 3009 are used as substrates, which are isolated from the outside world and adopt flexible insulating materials. The intermediate dielectric layer 3006 is composed of multi-level pyramid-shaped flexible convex structures with different heights, which increases the sensitivity and range of pressure measurement. The top electrode 3008 is composed of two spiral coils and a flat electrode, each ...

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Abstract

The invention belongs to the field of flexible sensors, and discloses a multi-mode cell-variable flexible sensor and a signal acquisition system. The flexible sensor is of a multi-layer structure. Themultilayer structure comprises an upper electrode layer, a spacing layer and a lower electrode layer. At least one of the upper electrode layer and the lower electrode layer is a sensor A, the spacing layer is arranged between the electrode layers, a sensor B is formed by forming an electrode layer-spacing layer-electrode layer structure, and when an object to be detected is detected, measurementof different physical quantities of different objects to be detected is realized by switching between the sensor A and the sensor B; in addition, the sensor is used as a unit cell, and a multi-cell sensor is formed by combining a plurality of unit cells. The invention further discloses a signal acquisition system for acquiring signals of the sensor. According to the invention, leads of a plurality of sensors are reduced, the measurement precision and the measurement efficiency are improved, and the measurement cost is reduced.

Description

technical field [0001] The invention belongs to the field of flexible sensors, and more particularly, relates to a multi-modal variable cell flexible sensor and a signal acquisition system. Background technique [0002] With the development of flexible electronics and sensor technology, it has been widely used in flexible bio-integrated electronics, aircraft intelligent skin, robotic electronic skin, human organ epidermal electronics and other fields. The requirements for robustness and in-situ sensing-excitation integration are getting higher and higher, requiring the continuous fusion of different sensing modules and executive excitation modules to form complex multifunctional flexible electronic systems. For example, the intelligent skin of the aircraft needs to use the flexible skin to achieve in-situ pressure, temperature, and wind speed measurement on the surface of the aircraft, and also needs to perform functions such as crack diagnosis and electromagnetic wave absor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/22G01K7/16G01K7/02G01N27/22G01N27/00A61B5/04A61N1/36
CPCG01L1/2262G01K7/16G01K7/021G01N27/223G01N27/00A61N1/36014A61B5/24G01D21/02G01L1/16G01L1/205H04R17/025
Inventor 黄永安朱臣熊文楠白云昭杨朝熙尹周平
Owner HUAZHONG UNIV OF SCI & TECH
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