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Flexible array type pressure sensor and preparation process

A pressure sensor and flexible array technology, applied in the sensor field, can solve the problems such as the inability of one-to-one correspondence between the sensor unit and the detection curve, inaccurate fault location, and few points, and achieve simple and convenient operation, high sensitivity and low cost. Effect

Pending Publication Date: 2022-08-05
WUHAN UNIV
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Problems solved by technology

[0007] In view of the current LC sensor design, there are few points in the wired monitoring system, difficult wiring, high cost, inaccurate fault location, and the sensor units and detection curves in the wireless monitoring system cannot be one-to-one. The invention proposes an array Design and fabrication process of flexible array pressure sensor

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  • Flexible array type pressure sensor and preparation process
  • Flexible array type pressure sensor and preparation process
  • Flexible array type pressure sensor and preparation process

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Embodiment

[0058] Example: as figure 1 and Figure 7 As shown, the present invention provides a flexible array pressure sensor, comprising a flexible substrate 11 and four arrayed LC resonant circuits arranged on the flexible substrate 11, each LC resonant circuit includes an inductance coil 122 and a capacitor, the capacitor It includes a pair of capacitor plates 121 and a compressible dielectric layer 13 between the two capacitor plates 121; by changing the shape of the inductance coil 122, the number of inductance turns and the area of ​​the capacitor plates 121, each LC resonates for the same pressure environment. The circuit constitutes a sensor unit, and a plurality of sensor units are in different resonant frequency ranges.

[0059] The LC resonant circuit includes a flexible circuit 12 processed on a flexible substrate 11 and a compressible dielectric layer 13 covering the flexible circuit 12. The flexible circuit 12 includes two capacitor plates 121 surrounding each capacitor p...

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Abstract

The invention discloses a flexible array type pressure sensor and a preparation technology, the sensor comprises a flexible substrate and a plurality of array type LC resonance circuits, and each LC resonance circuit comprises an inductance coil and a capacitor; the parameters of the LC resonance circuits are changed, so that for the same pressure environment, the plurality of LC resonance circuits are located in different resonance frequency intervals S1, an application working condition is selected, and the overall size of the flexible array type pressure sensor is determined; during preparation, parameters of LC resonance electricity are designed firstly, the flexible circuit is prepared on the flexible substrate in a printing mode, the flexible circuit comprises the two capacitance polar plates, the inductance coil and the lead, then the dielectric layer covers the flexible substrate, then the flexible substrate is folded in half, and the flexible array type pressure sensor is obtained. The array type sensor is adopted, the measurement precision can be improved, pressure distribution can be measured in a distributed mode, meanwhile, signal crosstalk is avoided, and application of the array sensor is greatly expanded.

Description

technical field [0001] The invention belongs to the field of sensors and relates to a flexible array pressure sensor, in particular to a flexible array pressure sensor and a preparation process. Background technique [0002] Flexible technology has penetrated every aspect of sensor design and manufacture. At present, various pressure sensors proposed in the academic circle not only have good ductility due to the use of flexible materials, but also fully draw on the characteristics of wireless transmission of electrical signals, get rid of the complicated wires in traditional circuits, and realize passive power to a certain extent. wireless. However, it is still a big difficulty to effectively summarize and analyze the data collected by the sensor. For example, in an array sensor designed using the LC resonance principle, when a single measurement port (usually a single signal reading coil) is used to blindly detect a multi-sensor unit, the resonance frequency fluctuation r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/03
CPCA61B5/031A61B2562/0247A61B2562/0252
Inventor 李辉唐舞阳张云帆申胜男
Owner WUHAN UNIV
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