A liquid leakage sensor fabric with signal double-sided output

Abstract

The present invention discloses a liquid leakage sensor fabric with double-sided signal output. Conductive weft yarns are woven in the fabric body at intervals, and conductive warp yarns are woven in the fabric edge area on one side of the fabric, separated from each other by non-conductive warp yarns; the fabric edge area on one side includes upper and lower layers of warp yarns, and the conductive warp yarns are provided with 2 N Root, where N is a positive integer, the interval is divided into two groups, each group N The conductive weft yarns are arranged in a cycle of two groups, one group is arranged in the upper warp yarn, and the other group is arranged in the lower warp yarn. The first conductive weft yarn is in contact with and electrically conductive with one group of the two groups of conductive warp yarns, and is isolated from and electrically insulated from the other group of conductive warp yarns at the same time. The mutual isolation and electrical insulation are achieved by the conductive weft yarn passing under or over at least three non-conductive warp yarns around the conductive warp yarns. The second conductive weft yarn is in contact with or isolated from the conductive warp yarn in the opposite manner to the first conductive weft yarn.

Description

Technical Field

[0001] The invention relates to a liquid leakage sensor fabric, in particular to a signal double-sided output type liquid leakage sensor fabric, belonging to the fields of textile technology and sensor technology. Background Art

[0002] At present, there are some liquid leakage sensors on the market, which can be used for liquid leakage detection in computer rooms, smart homes, etc. This type of sensor uses the conductive properties of liquid to work. The main component is a probe with two electrodes. When working, the probe is placed in the area where the liquid flows after the leak to achieve detection. The disadvantage of this type of sensor is that the liquid leakage must reach a certain amount to achieve the effect of immersing the two electrodes of the probe at the same time. However, for some special occasions, such as during the transportation of chemically contaminated liquids, if dripping occurs at the flange connection of the pipeline, then the use of this probe-type leakage sensor may result in missed detection.

[0003] The inventor's Chinese invention patent with the patent number of 201610107158.8 and the name of "Water Drop Sensor Fabric and Its Production Method" provides a water drop sensor fabric, which realizes the detection of large area, few water drops and uncertain position. And because of its flexibility, it can adapt to various shapes and environments. It can be placed under the above flange or directly wrapped outside the flange to detect trace leakage. However, the sensor fabric also has some shortcomings. First, its lead electrodes are arranged on both sides of the fabric, so it cannot be cut along the warp direction during use. Its market products must be customized, which limits its scope of use; secondly, in the production of this kind of fabric, other processing is required after the fabric is woven, and the processing efficiency is low; finally, when the signal of this kind of fabric is output, two small clips are required to clamp the two sides respectively, which is inconvenient to use. If a small clip can be made to clamp one side to obtain the signal, it can be greatly convenient to use. Summary of the invention

[0004] Therefore, researching and producing a liquid leakage sensor fabric that is directly woven and can be used by just clamping one side with a small clip will greatly improve production efficiency, applicability and convenience in use, and has broad market prospects.

[0005] To this end, the purpose of the present invention is to provide a liquid leakage sensor fabric with double-sided signal output to overcome the defects in the prior art that the sensor fabric cannot be cut along the warp direction, the fabric needs to be processed elsewhere after it is woven, resulting in low processing efficiency, and the fabric is inconvenient to use because two small clips are required to clamp the two sides separately when outputting the signal.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] According to one aspect of the present invention, a signal double-sided output type liquid leakage sensor fabric comprises vertically intersecting warp yarns and weft yarns, both of which are conductive and non-conductive, the non-conductive weft yarns and the non-conductive warp yarns are interwoven to form a fabric body, the conductive weft yarns are woven in the fabric body at intervals, the conductive warp yarns are woven in a side edge area of ​​the fabric, and are separated from each other by non-conductive warp yarns; the side edge area comprises upper and lower layers of warp yarns, and the conductive warp yarns are provided with 2 N Root, where N is a positive integer, the interval is divided into two groups, each group N The conductive weft yarns are arranged in a cycle of two groups, one group is arranged in the upper warp yarn, and the other group is arranged in the lower warp yarn. The first conductive weft yarn is in contact with and electrically conductive with one group of the two groups of conductive warp yarns, and is isolated from and electrically insulated from the other group of conductive warp yarns at the same time. The mutual isolation and electrical insulation are achieved by the conductive weft yarn passing under or over at least three non-conductive warp yarns around the conductive warp yarns. The second conductive weft yarn is in contact with or isolated from the conductive warp yarn in the opposite manner to the first conductive weft yarn.

[0008] Furthermore, the N A positive integer from 1 to 10.

[0009] Furthermore, the N A positive integer from 2 to 5.

[0010] According to another aspect of the present invention, a signal double-sided output type liquid leakage sensor fabric comprises vertically intersecting warp yarns and weft yarns, both of which are conductive and non-conductive, the non-conductive weft yarns and the non-conductive warp yarns are interwoven to form a fabric body, the conductive weft yarns are woven in the fabric body at intervals, the conductive warp yarns are woven in the fabric edge areas on both sides of the fabric, and are separated from each other by the non-conductive warp yarns; each side of the fabric edge area comprises an upper layer and a lower layer of warp yarns, and the conductive warp yarns in each side of the fabric edge area are provided with 2 N Root, where N is a positive integer, the interval is divided into two groups, each group N The conductive weft yarns are arranged in a cycle of two each, wherein the first conductive weft yarn is in contact with and electrically conductive with one group of the conductive warp yarns on each side, and is isolated and electrically insulated from the other group of the conductive warp yarns on each side, wherein the mutual isolation and electrical insulation are achieved by the conductive weft yarn passing under or over at least three non-conductive warp yarns around the conductive warp yarns, and the second conductive weft yarn is in contact with or isolated from the conductive warp yarn in the opposite manner to the first conductive weft yarn.

[0011] Furthermore, the N A positive integer from 1 to 10.

[0012] Furthermore, the N A positive integer from 2 to 5.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The liquid leakage sensor fabric of the present invention can be cut arbitrarily without affecting the detection function; the fabric can be directly woven and can be used after weaving, and no other processing is required during the weaving process and after weaving, so once the fabric is put on the machine, it can be easily mass-produced; the conductive warp yarns are grouped at intervals and arranged in the upper and lower layers of the fabric edge area without contacting each other, so the detection signal can be output from the front and back sides of the fabric respectively, and the signal can be derived by clamping the fabric edge with a small clip during use; higher reliability can be achieved when multiple conductive warp yarns are used; when a structure with multiple conductive warp yarns arranged on both sides is used, both the left and right halves can be used after cutting, avoiding waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 2 is a schematic structural diagram of a liquid leakage sensor fabric with signal double-sided output according to an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 A cross-sectional view of the liquid leakage sensor fabric along the first conductive weft yarn is shown;

[0017] Figure 3 yes Figure 1 A cross-sectional view of the liquid leakage sensor fabric along the second conductive weft yarn is shown;

[0018] Figure 4 yes Figure 1 The schematic diagram of the working principle of the liquid leakage sensor fabric shown;

[0019] Figure 5 yes Figure 1 The schematic diagram of the structure of the liquid leakage sensor fabric after cutting is shown;

[0020] Figure 6 is a structural schematic diagram of a liquid leakage sensor fabric with double-sided signal output according to another embodiment of the present invention;

[0021] Figure 7 It is a structural schematic diagram of a liquid leakage sensor fabric with double-sided signal output according to another embodiment of the present invention;

[0022] Figure 8 yes Figure 7 Schematic diagram of the structure of the remaining part on the right side of the liquid leakage sensor fabric after cutting.

[0023] in, Figure 2 , Figure 3In order to clearly show the fabric structure, the warp and weft yarns are drawn to be in contact with each other. In actual fabrics, due to the tension of the yarns, the warp and weft yarns will be close to and in contact with each other unless they are separated by other yarns. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with specific examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention.

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiment of the present invention. It should be supplemented that the cloth edge area where the conductive warp yarn is located in the figure has two layers of warp yarn. Figure 2 , Figure 3 In addition, only the conductive warp yarn is drawn in the figure to illustrate the fabric structure and working principle, and the non-conductive warp yarn above or below it is not drawn. Obviously, the described embodiments are only part of the embodiments of the present invention, not all embodiments.

[0026] Please refer to Figure 1 , Figure 1 1 is a schematic diagram of the structure of a liquid leakage sensor fabric with double-sided signal output according to an embodiment of the present invention. The fabric body is formed by vertically interweaving a plurality of non-conductive warp yarns 1 and non-conductive weft yarns 2. The conductive weft yarns 201 and 202 are woven into the fabric at a certain distance. The entire fabric is also arranged with many such conductive weft yarns along the warp direction. Two conductive warp yarns 101 and 102 are arranged at the left edge of the fabric, and they are separated by the non-conductive warp yarn 1. When the first conductive weft yarn 201 is woven in, it is normally interwoven with the conductive warp yarn 102, in contact with each other and electrically conductive; it is isolated from the conductive warp yarn 101 and electrically insulated. When the second conductive weft yarn 202 is woven in, it is normally interwoven with the conductive warp yarn 101, in contact with each other and electrically conductive; it is isolated from the conductive warp yarn 102 and electrically insulated. Other conductive weft yarns on the fabric are also woven in one by one according to the rule of the conductive weft yarns 201 and 202, so that the conductive warp yarn 101 will be conductive with the even-numbered conductive weft yarns, and the conductive warp yarn 102 will be conductive with the odd-numbered conductive weft yarns. The conductive warp yarns 101 and 102 are not conductive to each other normally.

[0027] Please refer to Figure 2 , Figure 2 yes Figure 1The cross-sectional view of the liquid leakage sensor fabric along the first conductive weft yarn is shown, which focuses on how the conductive weft yarn and the conductive warp yarn are isolated from each other and electrically insulated. The cloth edge area where the conductive warp yarns 101 and 102 are located has two layers of warp yarns. Except for the conductive warp yarns, the other warp yarns are non-conductive warp yarns. The conductive warp yarn 101 is located in the lower layer, and the conductive warp yarn 102 is located in the upper layer; the left, right and upper sides of the conductive warp yarn 101 are respectively provided with non-conductive warp yarns 1-1, 1-3, and 1-2, which wrap the conductive warp yarn 101; similarly, the left, right and lower sides of the conductive warp yarn 102 are wrapped with non-conductive warp yarns 1-4, 1-6, and 1-5. When the conductive weft yarn 201 is woven in, it passes through the top of the non-conductive warp yarns 1-1, 1-2, and 1-3, and then interweaves normally with the conductive warp yarn 102. After the conductive weft yarn 201 is woven in, non-conductive weft yarns will continue to be woven in and gradually form a fabric. After the fabric is formed, all the warp and weft yarns will be close to each other under the action of tension, but because the non-conductive warp yarns 1-1, 1-2, and 1-3 wrap the conductive warp yarn 101, the conductive weft yarn 201 is isolated from the conductive warp yarn 101 and is electrically insulated, and is in contact with the conductive warp yarn 102 and is electrically conductive.

[0028] Please refer to Figure 3 , Figure 3 yes Figure 1 The cross-sectional view of the liquid leakage sensor fabric along the second conductive weft yarn is shown, focusing on the situation that the second conductive warp and weft yarns are connected or insulated with the conductive warp yarns. When the second conductive weft yarn 202 is woven in, it is normally interwoven with the conductive warp yarn 101, and then passes under the non-conductive warp yarns 1-4, 1-5, and 1-6. Since the non-conductive warp yarns 1-4, 1-5, and 1-6 wrap the conductive warp yarn 102, the second conductive weft yarn 202 is isolated and electrically insulated from the conductive warp yarn 102, and is in contact with the conductive warp yarn 101 and electrically connected.

[0029] Please refer to Figure 4 , Figure 4 yes Figure 1 The schematic diagram of the working principle of the liquid leakage sensor fabric shown is shown. When there is a droplet 9 on the fabric, the non-conductive warp and weft yarns in the area will absorb water and become conductive, so that the conductive warp yarns 101 and 102 are turned on. The conductive path is conductive warp yarn 102 → conductive weft yarn 201 → droplet 9 → conductive weft yarn 202 → conductive warp yarn 101. Obviously, in this embodiment, the conductive warp yarns 101 and 102 are used as lead-out electrodes, and the conductive weft yarns 201 and 202 are used as detection electrodes. During use, it can be determined whether there are droplets on the fabric surface based on whether the conductive warp yarns 101 and 102 are turned on. Combined with Figure 2 , Figure 3 Since the conductive warp yarns are divided into two layers and do not touch each other, the detection signal can be output from the front and back sides of the fabric respectively. During use, the signal can be derived by simply clamping the edge of the fabric with a small conductive clip.

[0030] Please refer to Figure 5 , Figure 5 yes Figure 1 The structure diagram of the liquid leakage sensor fabric after cutting is shown. Figure 1 After the fabric in is cut along the fold line AB, we get Figure 5 The fabric shown in the figure still has the detection function because the lead-out electrodes, namely the conductive warp yarns 101 and 102, are still retained after cutting. The conductive path in the figure is conductive warp yarn 101 → conductive weft yarn 202 → droplet 9 → conductive weft yarn 203 → conductive warp yarn 102.

[0031] Please refer to Figure 6 , Figure 6 FIG. 1 is a schematic diagram of the structure of a liquid leakage sensor fabric with double-sided signal output according to another embodiment of the present invention, in which conductive warp yarns are added. Figure 1 When one of the two conductive warp yarns in the fabric breaks, the detection function of the entire fabric is lost, so more conductive warp yarns can be provided. Figure 6 There are 4 conductive warp yarns, all located on the same side of the fabric. Figures 1 to 3 , the added conductive warp yarn 103 is located in the lower warp yarn of the selvedge area, and has the same structure as the conductive warp yarn 101 in the fabric; the added conductive warp yarn 104 is located in the upper warp yarn of the selvedge area, and has the same structure as the conductive warp yarn 102 in the fabric. In this way, even if one of the upper and lower conductive warp yarns among the four conductive warp yarns is broken, the detection function of the entire fabric is not lost, which increases the reliability in use. Moreover, if the number of conductive warp yarns is further increased, such as to 6-20, that is, the upper and lower conductive warp yarns are 3-10 respectively, the reliability will be further improved. Moreover, multiple conductive warp yarns are divided into upper and lower layers, which is also convenient for signal extraction. For example, when a conductive small clip is used to clamp the selvedge, the more the number of yarns, the greater the probability of clamping. However, the more conductive warp yarns, the higher the additional cost, because the conductive warp yarn is more expensive than ordinary yarns. Production and use practices show that the number of conductive warp yarns is appropriate to be less than 10.

[0032] Please refer to Figure 7 , Figure 7 It is a schematic structural diagram of a liquid leakage sensor fabric with double-sided signal output according to another embodiment of the present invention, wherein conductive warp yarns are arranged on both sides of the fabric. Figure 1 , Figure 6 The fabric in the method can be cut and used, but only the part containing the lead-out electrode, i.e., the conductive warp yarn, i.e., the left half, can be used. The right half has no lead-out electrode and does not have the detection function, so it can only be discarded during use, resulting in a certain degree of waste. Therefore, conductive warp yarns can be set on both sides of the fabric. Figure 7There are 4 conductive warp yarns, 101 and 102 on the left side, and 111 and 112 on the right side. When the first conductive weft yarn 201 is woven in, it is normally interwoven with the left conductive warp yarn 102 and the right conductive warp yarn 112, so it is in contact with and electrically connected to each other, and at the same time, it is isolated and electrically insulated from the left conductive warp yarn 101 and the right conductive warp yarn 111 by the aforementioned non-conductive warp yarn wrapping the conductive warp yarn; the second conductive weft yarn 202 is in contact with or isolated from the conductive warp yarn in the opposite way to the first conductive weft yarn 201, that is, it is in contact with and electrically connected to the left conductive warp yarn 101 and the right conductive warp yarn 111, and is also isolated and electrically insulated from the left conductive warp yarn 102 and the right conductive warp yarn 112 by the aforementioned non-conductive warp yarn wrapping the conductive warp yarn. In this way, the conductive warp yarns 101 and 102 are used as the left-side lead-out electrodes, and the conductive warp yarns 111 and 112 are used as the right-side lead-out electrodes. When in use, it is only necessary to judge whether the lead-out electrodes on one side are conductive, that is, whether the conductive warp yarns 101 and 102 or the conductive warp yarns 111 and 112 are conductive, to determine whether there are droplets on the fabric surface.

[0033] when Figure 7 After the fabric is cut along the fold line AB, the left half is Figure 5 The fabric in the middle can be used normally; the right half is Figure 8 The fabric in it can still be used normally.

[0034] In order to increase the reliability during use and prevent the loss of detection function due to the breakage of the conductive warp yarn, the conductive warp yarns on both sides can be Figure 6 The same increase, such as 8-40 conductive warp yarns, that is, 4-20 on each side. Of course, the number of conductive warp yarns on the left and right sides can be different, as long as the number of conductive warp yarns on each side is an even number.

[0035] Please refer to Figure 8 , Figure 8 yes Figure 7 The structure diagram of the liquid leakage sensor fabric shown is that conductive warp yarns are arranged on both sides and the remaining part on the right side is cut. Obviously, the remaining part on the right side still has the detection function. When there are droplets on the fabric, there is still a conduction signal output. The conduction path is conductive warp yarn 111→conductive weft yarn 202→droplet 9→conductive weft yarn 203→conductive warp yarn 112. The originally non-conductive conductive warp yarns 111 and 112 become conductive.

[0036] Obviously, when the above embodiment is adopted, the fabric can be cut arbitrarily without affecting its use, and the fabric can be directly woven and used after weaving. Once it is put on the machine, it can be conveniently mass-produced without the need for other processing; higher reliability can be achieved when multiple conductive warp yarns are used; when a structure with multiple conductive warp yarns on both sides is used, both the left and right halves can be used after detection, thus avoiding waste.

[0037] When the fabric of the above embodiment is used as a liquid leakage sensor, it only needs to be placed under the flange or directly wrapped outside the flange, the edge of the fabric is clamped with a small clip, and the signal is then derived from the two clips of the small clip.

[0038] The present invention has been disclosed above with preferred embodiments, but they are not intended to limit the present invention. Any technical solutions obtained by adopting equivalent replacement or equivalent transformation solutions fall within the protection scope of the present invention.

Claims

1. A liquid leakage sensor fabric with double-sided signal output, characterized in that: The invention comprises warp yarns and weft yarns intersecting vertically, and both the warp yarns and the weft yarns are of conductive and non-conductive types. The non-conductive weft yarns and the non-conductive warp yarns are interwoven to form a fabric body. The conductive weft yarns are woven in the fabric body at intervals, and the conductive warp yarns are woven in a side edge area of ​​the fabric, and are separated from each other by non-conductive warp yarns. The side edge area comprises upper and lower layers of warp yarns, and the conductive warp yarns are provided with 2 N Root, where N is a positive integer from 2 to 10, divided into two groups, each group N The conductive weft yarns are arranged in a cycle of two each, wherein the first conductive weft yarn is in contact with and electrically conductive to the conductive warp yarns in the upper warp yarn layer, and is isolated from and electrically insulated from the conductive warp yarns in the lower warp yarn layer. The second conductive weft yarn is in contact with or isolated from the conductive warp yarns in the opposite manner to the first conductive weft yarn. The first conductive weft yarn and the second conductive weft yarn are woven with the conductive warp yarns in the upper and lower warp yarn layers in the following manner: the first conductive weft yarn first passes through at least three non-conductive warp yarns on the left, right and top of the first conductive warp yarn in the lower warp yarn layer, and then passes through the bottom of the first conductive warp yarn in the upper warp yarn layer, and then continues to pass through at least three non-conductive warp yarns on the left, right and top of the second conductive warp yarn in the lower warp yarn layer, and then passes through the bottom of the second conductive warp yarn in the upper warp yarn layer, until it contacts or is isolated from the conductive warp yarns in the upper and lower warp yarn layers. N After the conductive warp yarns are interwoven, the second conductive weft yarn first passes through the top of the first conductive warp yarn in the lower warp yarn, and then passes through the bottom of at least three non-conductive warp yarns around the left, right, and bottom of the first conductive warp yarn in the upper warp yarn, and then passes through the top of the second conductive warp yarn in the lower warp yarn, and then passes through the bottom of at least three non-conductive warp yarns around the left, right, and bottom of the second conductive warp yarn in the upper warp yarn, until it interweaves with the second conductive warp yarn. N Conductive warp yarns are interwoven to complete the process.

2. The signal double-sided output type liquid leakage sensor fabric according to claim 1, characterized in that: Said N A positive integer from 2 to 5.

3. A liquid leakage sensor fabric with double-sided signal output, characterized in that: The invention comprises warp yarns and weft yarns intersecting vertically, and both the warp yarns and the weft yarns are of conductive and non-conductive types. The non-conductive weft yarns and the non-conductive warp yarns are interwoven to form the main body of the fabric. The conductive weft yarns are woven in the main body of the fabric at intervals, and the conductive warp yarns are woven in the fabric edge areas on both sides of the fabric, and are separated from each other by the non-conductive warp yarns. The fabric edge area on each side comprises an upper layer and a lower layer of warp yarns, and the conductive warp yarns in the fabric edge area on each side are provided with 2 N Root, where N is a positive integer from 2 to 10, divided into two groups, each group N The conductive weft yarns are arranged in a cycle of two each, the first conductive weft yarn is in contact with and electrically conductive with the conductive warp yarns in the upper warp yarns of each side edge region, and is isolated from and electrically insulated with the conductive warp yarns in the lower warp yarns of each side edge region at the same time, and the second conductive weft yarn is in contact with or isolated from the conductive warp yarns in the lower warp yarns of each side edge region in the opposite manner to the first conductive weft yarn; the first conductive weft yarn and the second conductive weft yarn are woven with the conductive warp yarns in the upper and lower warp yarns of each side edge region in the following manner: the first conductive weft yarn is first interwoven with the edge region on one side: the first conductive weft yarn first passes through the top of at least 3 non-conductive warp yarns on the left, right and top of the first conductive warp yarn in the lower warp yarn of the edge region on one side, then passes through the bottom of the first conductive warp yarn in the upper warp yarn, and continues to pass through at least 3 non-conductive warp yarns on the left, right and top of the second conductive warp yarn in the lower warp yarn The second non-conductive warp yarn is passed through the upper layer of warp yarns, and then passed through the lower layer of the second conductive warp yarn in the upper layer of warp yarns until it meets the side 2 N After the conductive warp yarns are interwoven, they are then interwoven with the non-conductive warp yarns in the body area of ​​the cloth as normal, and then interwoven with the other side of the selvedge area: first, they pass through the top of at least 3 non-conductive warp yarns on the left, right, and top of the first conductive warp yarn in the lower warp yarn of the other side of the selvedge area, and then pass through the bottom of the first conductive warp yarn in the upper warp yarn, and continue to pass through the top of at least 3 non-conductive warp yarns on the left, right, and top of the second conductive warp yarn in the lower warp yarn, and then pass through the bottom of the second conductive warp yarn in the upper warp yarn, until they are interwoven with the 2 conductive warp yarns on this side. N After the interweaving of the first conductive warp yarn is completed, the second conductive weft yarn is first interwoven with the side edge area: the second conductive weft yarn first passes through the top of the first conductive warp yarn in the lower warp yarn of the side edge area, and then passes through the bottom of at least three non-conductive warp yarns on the left, right and bottom of the first conductive warp yarn in the upper warp yarn, and continues to pass through the top of the second conductive warp yarn in the lower warp yarn, and then passes through the bottom of at least three non-conductive warp yarns on the left, right and bottom of the second conductive warp yarn in the upper warp yarn, until it interweaves with the second conductive warp yarn on the side. N After the conductive warp yarns are interwoven, they are then interwoven with the non-conductive warp yarns in the body area of ​​the cloth normally, and then interwoven with the other side of the selvedge area: first, they pass over the top of the first conductive warp yarn in the lower warp yarn of the other side of the selvedge area, and then pass under at least 3 non-conductive warp yarns to the left, right, and bottom of the first conductive warp yarn in the upper warp yarn, and then continue to pass over the top of the second conductive warp yarn in the lower warp yarn, and then pass under at least 3 non-conductive warp yarns to the left, right, and bottom of the second conductive warp yarn in the upper warp yarn, until they interweave with the 2 conductive warp yarns on this side. N Conductive warp yarns are interwoven to complete the process.

4. The signal double-sided output type liquid leakage sensor fabric according to claim 3, characterized in that: Said N A positive integer from 2 to 5.

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