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Ink-jet-printing-technology-based preparation method of flexible wireless pressure detection system

A detection system, inkjet printing technology, applied in the measurement of the property force of the piezoelectric resistance material, the copying/marking method, the printing of the production of special varieties of printed matter, etc., can solve the problem of not being soft enough, and achieve high conductivity , prolong life, strong stability effect

Inactive Publication Date: 2017-09-29
EAST CHINA NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other devices in the wearable field have the same problem, they just make the sensor and signal transmission part small enough, not soft enough

Method used

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  • Ink-jet-printing-technology-based preparation method of flexible wireless pressure detection system
  • Ink-jet-printing-technology-based preparation method of flexible wireless pressure detection system
  • Ink-jet-printing-technology-based preparation method of flexible wireless pressure detection system

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Experimental program
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Effect test

Embodiment

[0033] refer to figure 1 , the present invention includes: a flexible pressure sensor 1, a flexible silver circuit and an antenna 2, a copper coil 3, a processing circuit 4 composed of an impedance matching module and a WiFi chip, and a display terminal 5, the flexible pressure sensor 1 and the flexible silver circuit and The antenna 2 is connected; the processing circuit 4 is connected to the copper coil 3 and the display terminal 5, the flexible silver circuit and the antenna 2 are coupled with the copper coil 3 through electromagnetic induction, and are wirelessly connected within 5-30 cm. The copper coil 3 receives the signal, and the processing circuit 4 performs analog-to-digital conversion, and the digital signal is processed and output to the display terminal through the WiFi chip, and the signal change induced by the copper coil is determined by

[0034] Calculate the change of the pressure that the flexible pressure sensor 1 bears.

[0035] When pressure is applie...

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Abstract

The invention discloses an ink-jet-printing-technology-based preparation method of flexible wireless pressure detection system. The preparation method is characterized in that metal graphical processing of a flexible substrate surface is realized by ion exchange based on an all-wet chemical process; a flexible pressure sensor and a flexible antenna are prepared successively to realize signal transmitting and receiving; and then integration is carried out to form a flexible wireless pressure-sensitive sensor. Mechanical signals can be collected, transmitted and processed. During the metal graphical process, a common ink-jet printer can be used for printing with the low cost; and the obtained silver circuit is continuous and compact and the conductivity is high. The bonding force between a pressure sensing unit, the silver circuit, and the flexible substrate is strengthened; the pressure response frequency reaches 10000 hertz; and the pressure response range is from 10 pascal and 1 megapascal. During the flexible antenna signal collection and transmission, pressure response and transmission can be completed within 0.02 seconds. The flexible equipment has high stability; and the bending fatigue test demonstrates that the stability of the circuit characteristic of the system is kept after repeated 10000-times testing.

Description

technical field [0001] The invention relates to the technical field of human health monitoring, in particular to a method for preparing a wearable device based on inkjet printing technology that needs to use a miniature flexible pressure sensor, in particular a method for preparing a flexible wireless pressure detection system. Background technique [0002] Wearable devices are developing rapidly like mushrooms after rain, but most of the components, even sensors and communication antennas, are not flexible, so the size and power consumption of wearable devices are greatly limited. If real flexibility is realized, it will inevitably make wearable devices more suitable for the human body, smaller in size, and wider in application fields. Although existing technical articles and patents report methods for realizing flexible sensors, such as "A passive wireless pressure sensor with self-encapsulation function based on flexible substrates" reports a method for assembling wireles...

Claims

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Application Information

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IPC IPC(8): G01L1/18B41M3/00B41M5/00
CPCG01L1/18B41M3/00B41M5/0047B41M5/0064B41M2205/14
Inventor 吴幸刘晓博张健郭丛威肖紫嫣钱臻易
Owner EAST CHINA NORMAL UNIVERSITY
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