A knitted flexible sensing device for clothing

Abstract

The present invention discloses a knitted flexible sensing device for use in clothing, comprising a mobile sensing piece, which is sequentially provided with a first knitted sensing layer, an insulating fabric layer, and a second knitted sensing layer; a first sensing wire is mixed and woven into the first knitted sensing layer, and the first sensing wire is distributed inward in a spiral shape; a second sensing wire is mixed and woven into the second knitted sensing layer, and the second sensing wire is evenly distributed; the mobile sensing piece is connected to a ring-shaped mounting piece, and a micro-sensing power supply is provided in the mounting piece, and the micro-sensing power supply is connected to both ends of the first sensing wire to provide a periodically changing current; a signal amplifier is provided in the mounting piece, and the signal input end of the signal amplifier is respectively connected to the left and right half rings, the left half ring is connected to one end of the second sensing wire, and the right half ring is connected to the other end; the signal amplifier is connected to a signal processor and an output device. Through the above arrangement, the target position can be sensed in detail, and the sensing accuracy is excellent.

Description

Technical Field

[0001] The present invention relates to the field of smart clothing, and in particular to a knitted flexible sensing device applied to clothing. Background Art

[0002] Clothing is a vital product in our lives. People's demands for clothing have long gone beyond concealing ugliness and keeping warm, and now they pursue functionality, personalization, and intelligence in their clothing. Wearable smart clothing integrates electronic detection systems into clothing and its accessories, enabling the detection of human physiological signals during daily wear and use. Clothing, acting as a "second skin," comes into close contact with the human body, offering advantages such as lightness, comfort, portability, and wide coverage, making it an optimal medium for acquiring human signals. Knitted garments, due to their unique structure, are soft, comfortable, elastic, form-fitting, and flexible enough to accommodate conductive sensing materials. Therefore, they are often used as research vehicles for smart flexible sensors, capable of detecting physiological parameters such as body temperature, heart rate, and respiration, as well as monitoring muscle activity and movement.

[0003] While implementing functions such as data collection and signal transmission, smart textiles must maintain softness and comfort, ensuring optimal wearability during wear. Therefore, research on flexible sensors is currently a key focus in smart textile development. Knitted fabrics are ideal carriers for flexible sensors due to their softness, ease of deformation, and large contact area with the human body.

[0004] Smart clothing is the addition of sensors, actuators, and control units to conventional clothing. To achieve intelligent textile and apparel products, the development of wearable flexible sensors is essential. Knitted garments offer advantages such as comfort, large contact area with the human body, and the flexibility to incorporate sensors. These advantages make them an ideal platform for the development of new wearable flexible sensors. Furthermore, compared to metallic smart wearables, smart clothing that integrates fabric flexible sensors with underwear and socks is more likely to be accepted by consumers.

[0005] However, existing knitted flexible sensors typically embed the entire sensor into target clothing, such as underwear or socks. This manufacturing process is complex and currently unsuitable for large-scale production. To address this issue, a knitted flexible sensing device for clothing is proposed. Summary of the Invention

[0006] The object of the present invention is to provide a knitted flexible sensing device for use on clothing, which can be conveniently mounted on clothing and can sense a target position in detail, thereby having the advantage of accurate sensing.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a knitted flexible sensing device for use in clothing, comprising a circular movable sensing sheet, wherein the movable sensing sheet is provided with a first knitted sensing layer, an insulating fabric layer, and a second knitted sensing layer in sequence from the side closest to the human body;

[0008] The first knitted sensing layer is mixed with a first sensing wire, and the first sensing wire is distributed inward in a spiral shape;

[0009] The second knitted sensing layer is mixed with second sensing wires, and the second sensing wires are evenly and parallelly arranged;

[0010] The mobile sensor piece is connected to a ring-shaped mounting piece, and a micro sensor power supply is provided in the mounting piece. The micro sensor power supply is connected to both ends of the first sensor wire and provides a periodically changing current.

[0011] A signal amplifier is provided in the mounting plate, and the signal input end of the signal amplifier is respectively connected to the left half ring and the right half ring which are isolated from each other. The left half ring is connected to one end of the evenly distributed second sensing wire, and the right half ring is connected to the other end. The signal amplifier is connected to a signal processor and an output device.

[0012] Through the above technical solution, since a first sensing wire in the shape of a spiral is provided in the first knitted sensing layer and a varying current is passed through the first sensing wire, a varying magnetic field can be formed. The magnetic field passes through the second sensing wire in the second knitted sensing layer, thereby generating a current signal. The current signal is amplified by a signal amplifier and processed by a signal processor, and then output through an output device. After the first knitted sensing layer contacts the user's skin, the user's physiological conditions such as heartbeat and breathing cause the skin and the first knitted sensing layer to deform, thereby causing the magnetic field formed by the spiral and the current signal of the second sensing wire to change accordingly. The change is amplified by the signal amplifier and processed by the signal processor, thereby obtaining the corresponding physiological condition of the user. At the same time, since the mobile sensor piece can be placed in different places, different physiological data can be obtained, which has the advantage of a wide range of applications.

[0013] Preferably, the mounting piece is provided with a connection portion for connecting to clothing.

[0014] With the above technical solution, the installation of the mounting piece and the mobile sensing piece can be conveniently realized through the connecting portion, thereby obtaining physiological data at different positions.

[0015] Preferably, the connecting portion is a Velcro ring, and the Velcro ring is arranged on a side of the mounting piece away from the skin.

[0016] Through the above technical solution, the device can be conveniently attached to clothing through the Velcro ring, and the operation is very convenient.

[0017] Preferably, the connecting portion is an annular cloth connected to the mounting piece, and the annular cloth is connected to the garment by knitting.

[0018] Through the above technical solution, the annular cloth is knitted and connected to the clothing, so that the device can be firmly fixed, which is conducive to long-term use.

[0019] Preferably, the first sensing wire and the second sensing wire are silver-plated nylon yarns.

[0020] Through the above technical solution, the silver-plated nylon yarn has the advantages of good conductivity, washing resistance and good tensile properties.

[0021] Preferably, the diameter of the mobile sensor piece is 2 cm to 10 cm.

[0022] Through the above technical solution, the mobile sensor piece with this size setting can complete the sensing function. If it is too large, it will waste materials, and if it is too small, it cannot be used normally. This range is just right.

[0023] Preferably, the spacing between the second sensing wires is 1 mm to 2.5 mm.

[0024] Through the above technical solution, theoretically, the greater the density of the second sensing wires, the larger the induced current signal generated, and therefore the higher the accuracy of the sensor. However, since the density of the second sensing wires is too high, it is easy to cause a short circuit between the second sensing wires, affecting normal sensing, so it is necessary to set a suitable spacing.

[0025] Preferably, the distance between the curves of the spiral line formed by the first sensing wire is 1 mm to 2.5 mm.

[0026] Through the above technical solution, theoretically speaking, the greater the density of the first sensing wires, the stronger the magnetic field strength generated, and the larger the induced current signal generated. Therefore, the accuracy of the sensor is higher. However, since the curve density of the first sensing wires is too large, it is easy to cause short circuits between the first sensing wires, affecting normal sensing, so it is necessary to set a suitable spacing.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The sensor device can be easily installed at a designated location to measure corresponding physiological data. For example, if it is installed at the heart or pulse, it can measure heartbeats; if it is placed at a joint, it can measure the bending of the joint, etc.

[0029] (2) The sensor device has good sensing accuracy, and its structure is relatively simple and easy to manufacture;

[0030] (3) The connection between the sensor device and the clothing is simple and fast, and it is suitable for different occasions and has the advantage of a wide range of uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the cross-sectional structure of the mobile sensor sheet in the present invention;

[0032] Figure 2 It is a structural schematic diagram of the mounting plate in the present invention;

[0033] Figure 3 Schematic diagram of the structure of the connecting portion in embodiment 1 of the present invention;

[0034] Figure 4 This is a structural diagram of the connecting portion in the second embodiment of the present invention.

[0035] In the figure: 1. First knitted sensing layer; 2. Insulating fabric layer; 3. Second knitted sensing layer; 4. First sensing wire; 5. Second sensing wire; 6. Mounting plate; 7. Micro sensor power supply; 8. Signal amplifier; 9. Left half ring; 10. Right half ring; 11. Signal processor; 12. Velcro ring; 13. Ring cloth; 14. Output device. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] See also Figure 1-3 , the present invention provides embodiment 1:

[0038] A knitted flexible sensing device for use in clothing includes a circular mobile sensing sheet. The sheet is sequentially arranged, from the side closest to the human body, with a first knitted sensing layer 1, an insulating fabric layer 2, and a second knitted sensing layer 3. The diameter of the mobile sensing sheet ranges from 2 cm to 10 cm, and in this embodiment, the diameter is 5 cm. This size is ideal for sensing. A larger size would waste material, while a smaller size would render the sheet inoperable.

[0039] First sensing wires 4 are woven into the first knitted sensing layer 1 and arranged in a spiral pattern. Second sensing wires 5 are woven into the second knitted sensing layer 3 and arranged evenly and in parallel. Both first and second sensing wires 4 and 5 are made of silver-plated nylon yarn. Silver-plated nylon yarn has the advantages of good conductivity, washability, and excellent tensile properties.

[0040] The mobile sensor piece is connected to a ring-shaped mounting piece 6 , and a micro sensor power supply 7 is provided in the mounting piece 6 . The micro sensor power supply 7 is connected to both ends of the first sensor wire 4 and provides a periodically changing current.

[0041] A signal amplifier 8 is provided in the mounting plate 6. The signal input end of the signal amplifier 8 is respectively connected to the left half ring 9 and the right half ring 10 which are isolated from each other. The left half ring 9 is connected to one end of the evenly distributed second sensing wire 5, and the right half ring 10 is connected to the other end. The signal amplifier 8 is connected to a signal processor 11 and an output device 14.

[0042] Since a first sensing wire 4 in the shape of a spiral is provided in the first knitted sensing layer 1 and a varying current is passed through the first sensing wire 4, a varying magnetic field can be formed. The magnetic field passes through the second sensing wire 5 in the second knitted sensing layer 3, thereby generating a current signal. The current signal is amplified by the signal amplifier 8 and processed by the signal processor 11, and then outputted through the output device 14. After the first knitted sensing layer 1 comes into contact with the user's skin, the user's physiological conditions such as the heartbeat and breathing cause the skin and the first knitted sensing layer 1 to deform, thereby causing the magnetic field formed by the spiral and the current signal of the second sensing wire 5 to change accordingly. The change is amplified by the signal amplifier 8 and processed by the signal processor 11, thereby obtaining the corresponding physiological condition of the user. At the same time, since the mobile sensor piece can be placed in different places, different physiological data can be obtained, which has the advantage of a wide range of applications.

[0043] The mounting piece 6 is provided with a connecting portion connected to clothing. The mounting piece 6 and the mobile sensor piece can be easily installed by the connecting portion to obtain physiological data at different positions.

[0044] The connecting portion is a magic stick ring 12, and the magic stick ring 12 is a ring-shaped magic stick made by magic stick, and the magic stick ring 12 is arranged on a side away from the skin of the mounting sheet 6. By the magic stick ring 12, the device can be easily pasted on the clothes, and the operation is very convenient.

[0045] The spacing between the second sensing wires 5 is 1 mm to 2.5 mm, and in this embodiment, the spacing is 1.5 mm. Theoretically, a higher density of the second sensing wires 5 generates a larger induced current signal, and thus, a higher precision sensor. However, an excessively high density of the second sensing wires 5 can easily cause short circuits between the second sensing wires 5, affecting proper sensing. Therefore, a suitable spacing is required.

[0046] The distance between the spiral curves formed by the first sensing wires 4 ranges from 1 mm to 2.5 mm, and in this embodiment, the spacing is 1.5 mm. Theoretically, a greater density of the first sensing wires 4 generates a stronger magnetic field and a larger induced current signal, thereby increasing the sensor's accuracy. However, an excessively high density of the first sensing wires 4 can easily cause short circuits between the first sensing wires 4, affecting proper sensing. Therefore, a suitable spacing is required.

[0047] See also Figure 4 , the present invention provides embodiment 2:

[0048] Unlike the first embodiment, the second embodiment has a connecting portion that is a ring-shaped cloth 13 connected to the mounting plate 6, and the ring-shaped cloth 13 is knitted to the garment. The knitted connection between the ring-shaped cloth 13 and the garment securely secures the device, facilitating long-term use.

[0049] In summary, the beneficial effects of the present invention are as follows: (1) the sensor device can be conveniently installed at a designated location to measure corresponding physiological data, such as being able to measure heartbeats when installed at the heart and pulse, and being able to measure the bending of the joints when placed at the joints, etc.; (2) the sensor device has good sensing accuracy, and its structure is relatively simple and easy to manufacture; (3) the connection between the sensor device and clothing is simple and fast, and is suitable for different occasions, having the advantage of a wide range of uses.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A knitted flexible sensing device for clothing, characterized by: The invention comprises a circular mobile sensing piece, wherein the mobile sensing piece is provided with a first knitted sensing layer (1), an insulating fabric layer (2) and a second knitted sensing layer (3) in sequence from the side close to the human body; A first sensing wire (4) is mixed in the first knitted sensing layer, and the first sensing wire (4) is distributed inward in a spiral shape; The second knitted sensing layer is mixed with second sensing wires (5), and the second sensing wires (5) are evenly and parallelly arranged; The mobile sensor piece is connected to a ring-shaped mounting piece (6), a micro sensor power supply (7) is provided in the mounting piece (6), and the micro sensor power supply (7) is connected to both ends of the first sensing wire (4) and provides a periodically changing current; A signal amplifier (8) is provided in the mounting plate (6), and a signal input end of the signal amplifier (8) is respectively connected to a left half ring (9) and a right half ring (10) which are arranged in isolation on the left and right sides, the left half ring (9) is connected to one end of the uniformly distributed second sensing wires (5), and the right half ring (10) is connected to the other end, and the signal amplifier (8) is connected to a signal processor (11) and an output device (14); The mounting piece (6) is provided with a connection portion for connecting with clothing; The connecting portion is a Velcro ring (12), and the Velcro ring (12) is arranged on a side of the mounting plate (6) away from the skin; The connecting portion is an annular cloth (13) connected to the mounting piece (6), and the annular cloth (13) is connected to the garment by knitting; The first sensing wire (4) and the second sensing wire (5) are silver-plated nylon yarns; The diameter of the mobile sensor piece is 2 cm to 10 cm.

2. The knitted flexible sensing device for clothing according to claim 1, characterized in that: The spacing between the second sensing wires (5) is 1 mm to 2.5 mm.

3. The knitted flexible sensing device for clothing according to claim 1, characterized in that: The distance between the curves of the spiral line formed by the first sensing wire (4) is 1 mm to 2.5 mm.

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