A spider-webbed arrayed pressure detection device

Abstract

The application provides a spider-web structure array pressure detection device, which comprises a fiber pressure sensor, an elastic fiber and a wire, six fiber pressure sensors are arranged in a regular hexagon array to form a first sensor array, a plurality of sensor arrays are arranged in sequence, and the diagonal lines and the center points of the plurality of sensor arrays coincide, three elastic fibers are respectively located on three diagonal lines, two intersecting fiber pressure sensors are connected to the elastic fibers and form an intersection, two fiber pressure sensors and the elastic fiber at each intersection form a sensing unit, and the upper and lower surfaces of the fiber pressure sensors at the intersection are respectively provided with a wire. The technical scheme of the application overcomes the problems of poor air permeability and easy tearing of the flexible pressure sensor in the prior art.

Description

Technical Field

[0001] This invention relates to the field of pressure detection technology, and specifically to a spider web-structured array-type pressure detection device. Background Technology

[0002] A resistive flexible pressure sensor array typically consists of sensing units, a flexible substrate, and wires. During operation, the sensing units convert pressure signals into resistance signals, which are then transmitted to an external signal processing system via wires. The flexible substrate provides support and protection for the sensor array.

[0003] Faced with diverse working environments, sensor arrays must overcome various challenges to perform pressure detection. For example, detecting surface pressure when a human knee is bent requires the sensor array to have sufficient stress-bearing capacity; otherwise, it is prone to tearing. It also needs a certain degree of breathability and water permeability; otherwise, it is unsuitable for prolonged wear. Furthermore, when performing pressure detection on uneven or curved surfaces, the sensing unit may be interfered with. Many complex working environments, including those mentioned above, can easily affect the performance and structure of sensor arrays, thereby hindering their normal operation, preventing them from meeting the needs of daily life and production, and causing economic losses.

[0004] Therefore, there is a need for an array-type pressure detection device with a spider web structure that has good air permeability and is not easily torn. Summary of the Invention

[0005] The main objective of this invention is to provide a spider web-structured array-type pressure detection device to solve the problems of poor air permeability and easy tearing in existing flexible pressure sensors.

[0006] To achieve the above objectives, the present invention provides a spider web-structured array-type pressure detection device, comprising: fiber pressure sensors, elastic fibers, and wires. Six fiber pressure sensors are arranged in a regular hexagonal array to form a first sensor array. Inside the first sensor array is a second sensor array with the same arrangement but smaller size. Inside the second sensor array is a third sensor array with the same arrangement but smaller size. The multiple sensor arrays are arranged sequentially, and the diagonals and center points of the multiple sensor arrays coincide. Three elastic fibers are located on the straight lines containing the three diagonals. Two intersecting fiber pressure sensors are connected to the elastic fibers and form an intersection point. The two fiber pressure sensors and the elastic fibers at each intersection point constitute a sensing unit. A wire is provided on the upper and lower surfaces of the fiber pressure sensors at the intersection point.

[0007] Furthermore, the fiber pressure sensor is made of thermoplastic polyurethane, carbon black, and salt.

[0008] Furthermore, the elastic fibers are made of thermoplastic polyurethane.

[0009] Furthermore, the intersections of the elastic fibers of the fiber pressure sensor are glued together using all-purpose adhesive.

[0010] The present invention has the following beneficial effects:

[0011] The spiderweb-structured array-type pressure detection device provided by this invention includes a fiber pressure sensor, elastic fibers, and wires. The fiber pressure sensor converts pressure into a resistance signal. The elastic fibers and the fiber pressure sensor together form a spiderweb structure. The intersection of the fiber pressure sensor and the elastic fibers is the sensing unit, which is the main pressure detection part. When subjected to pressure, the resistance signal output by the fiber pressure sensor in the sensing unit changes. Wires are inserted into the upper and lower surfaces of the fiber pressure sensor in the sensing unit as electrodes to transmit the sensor's resistance signal outward. A single sensing unit can detect the pressure at its location, and multiple sensing units working together can detect pressure within a certain range. The sensing array has an overall hollow spiderweb structure, which allows for good air and water permeability, while effectively dispersing the stress applied to the sensing array and improving the problem of tearing of the sensing array under high stress conditions. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0013] Figure 1 A schematic diagram of the overall structure of a spider web-structured array-type pressure detection device according to the present invention is shown.

[0014] Figure 2 It shows Figure 1 A partial cross-sectional schematic diagram of an array-type pressure detection device with a spider web structure.

[0015] The reference numerals in the above figures are as follows:

[0016] 1. Elastic fiber; 2. Fiber pressure sensor; 3. Wire; 4. Sensing unit. Detailed Implementation

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figure 1 and Figure 2 The illustrated spiderweb-structured array-type pressure detection device includes: fiber pressure sensors 2, elastic fibers 1, and wires 3. Six fiber pressure sensors 2 are arranged in a regular hexagonal array to form a first sensor array. Inside the first sensor array, there is a second sensor array with the same arrangement and smaller size. Inside the second sensor array, there is a third sensor array with the same arrangement and smaller size. The multiple sensor arrays are arranged sequentially, and the diagonals and center points of the multiple sensor arrays coincide. Three elastic fibers 1 are located on the straight lines containing the three diagonals. Two intersecting fiber pressure sensors 2 are connected to the elastic fibers 1 and form an intersection point. The two fiber pressure sensors 2 and the elastic fibers 1 at each intersection point constitute a sensing unit 4. A wire 3 is respectively provided on the upper and lower surfaces of the fiber pressure sensors 2 and elastic fibers 1 at the intersection point.

[0019] The spiderweb-structured array-type pressure detection device provided by this invention includes a fiber pressure sensor 2, an elastic fiber 1, and a wire 3. The fiber pressure sensor 2 can convert pressure into a resistance signal. The elastic fiber 1 and the fiber pressure sensor 2 together form a spiderweb structure. The sensing unit 4 is the main pressure detection part. When subjected to pressure, the resistance signal output by the fiber pressure sensor 2 in the sensing unit 4 will change. The upper and lower surfaces of the elastic fiber 1 of the fiber pressure sensor 2 in the sensing unit 4 are inserted with wires 3 as electrodes to transmit the sensor's resistance signal outward. A single sensing unit 4 can detect the pressure at the location of the sensing unit 4. Multiple sensing units 4 working together can detect the pressure within a certain range. The sensing array as a whole has a hollow spiderweb structure, which can effectively allow air and water to pass through, and at the same time effectively disperse the stress applied to the sensing array, improving the problem of tearing of the sensing array under high stress environment.

[0020] When the sensing unit 4 is subjected to pressure, the fiber pressure sensor 2 deforms, thereby changing the magnitude of the output resistance signal, which is then transmitted to the external signal processing system via the wire 3 to complete the detection of the pressure applied to the sensing unit 4.

[0021] When multiple locations on the sensor array are subjected to pressure, each sensing unit 4 outputs a corresponding resistance signal according to the different pressures applied, and transmits it to the external signal processing system through the wire 3 to complete the detection of the pressure applied to the sensor array.

[0022] Specifically, the fiber pressure sensor 2 is made of thermoplastic polyurethane, carbon black, and salt. The thermoplastic polyurethane provides excellent elasticity to both the fiber pressure sensor 2 and the elastic fiber 1. Meanwhile, the salt and carbon black give the fiber pressure sensor 2 a porous, sponge-like structure with a certain degree of conductivity. The combination of the fiber pressure sensor 2 and the elastic fiber 1 forms a spiderweb structure that allows for good air and water permeability, effectively dispersing stress applied to the sensing array and mitigating the problem of tearing under high stress. Furthermore, the fiber pressure sensor 2 in the sensing unit 4 changes its output resistance signal when subjected to pressure and transmits it to an external signal processing system via the wire 3 to detect the pressure. A single sensing unit 4 can detect the pressure at its location, while multiple sensing units 4 working together can detect pressure within a certain range.

[0023] Specifically, the elastic fiber 1 is made of thermoplastic polyurethane.

[0024] Specifically, the intersection of the elastic fibers 1 of the fiber pressure sensor 2 is glued together using universal adhesive.

[0025] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A spiderweb-structured array-type pressure detection device, characterized in that, include: The system comprises fiber pressure sensors, elastic fibers, and wires. Six fiber pressure sensors are arranged in a regular hexagonal array to form a first sensor array. Inside the first sensor array, there is a second sensor array with the same arrangement but smaller size. Inside the second sensor array, there is a third sensor array with the same arrangement but smaller size. The multiple sensor arrays are arranged sequentially, and the diagonals and center points of the multiple sensor arrays coincide. Three elastic fibers are located on the straight lines containing the three long diagonals. Two intersecting fiber pressure sensors are connected to the elastic fibers and form an intersection point. The two fiber pressure sensors and the elastic fibers at each intersection point constitute a sensing unit. A wire is provided on the upper and lower surfaces of the fiber pressure sensors at the intersection point. The fiber pressure sensor is made of thermoplastic polyurethane, carbon black, and salt. The elastic fiber is made of thermoplastic polyurethane.

2. The array-type pressure detection device with a spider web structure according to claim 1, characterized in that, The intersections of the elastic fibers in the fiber pressure sensor are glued together using all-purpose adhesive.

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