Conducting liquid trace leakage positioning detection sensing fabric and testing device thereof

Abstract

The invention discloses a conductive liquid trace leakage positioning detection sensing fabric and a testing device thereof, the conductive liquid trace leakage positioning detection sensing fabric comprises a main cloth area, the main cloth area is provided with non-conductive warp yarns and non-conductive weft yarns, a plurality of conductive weft yarns are woven, the conductive weft yarns are divided into a plurality of weft yarn detection groups, and the weft yarn detection groups comprise a plurality of minimum detection units; the side cloth edge area is arranged on at least one side edge of the main cloth area along the longitudinal depth direction of the warp yarns and is provided with two groups of first warp yarn detection groups and second warp yarn detection groups; the plurality of conductive warps of the first warp detection group are electrically conducted with one conductive weft in each corresponding minimum detection unit in sequence along the depth direction with the same interweaving step frequency number, and the plurality of conductive warps of the second warp detection group are electrically conducted with the other conductive weft in each minimum detection unit of the weft detection group respectively. According to the sensing fabric and the testing device thereof disclosed by the invention, fine and accurate detection subareas can be obtained by using less conductive warp yarn edge layout, and the sensing fabric and the testing device thereof are suitable for quick and convenient leakage positioning detection.

Description

Technical Field

[0001] The invention belongs to the field of textile technology, and in particular relates to a conductive liquid trace leakage positioning detection sensor fabric and a testing device thereof. Background Art

[0002] In recent years, with the development of smart textiles, sensor fabrics that can detect multiple physical quantities such as pressure, temperature, and humidity have emerged. These fabrics are not only flexible and wearable, but also can detect the entire surface area within their range, which is not available in previous single-point sensors. For example, for liquids, especially in the case of trace leakage, single-point detection can only be effective when the liquid flows through the sensor location, and often cannot detect the leak in time. Using fabrics with specific composition and structure as sensors can achieve surface detection and respond to leaks as low as a drop of liquid (0.05mL) in time. However, when the sensor fabric is used in a length of tens or hundreds of meters, it is very important to quickly locate the leak location, but there is currently a lack of sensor fabrics that can respond to leaks in time and provide feedback on the leak location. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a conductive liquid trace leakage positioning detection sensor fabric and a testing device thereof, which can be laid out with fewer conductive warp yarn edges to obtain detailed and accurate detection partitions, and is suitable for fast and convenient leakage positioning detection.

[0004] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0005] In a first aspect, the present invention provides a conductive liquid trace leakage location detection sensor fabric, comprising:

[0006] The main fabric area is provided with a plurality of non-conductive warp yarns and non-conductive weft yarns interlaced vertically and horizontally, and a plurality of conductive weft yarns parallel to the non-conductive weft yarns are evenly spaced in the longitudinal direction of the warp yarns, the conductive weft yarns are divided into a plurality of weft yarn detection groups, and each of the weft yarn detection groups contains a plurality of minimum detection units consisting of two adjacent conductive weft yarns;

[0007] A side fabric edge area is arranged on at least one side of the main fabric area along the depth direction of the warp yarns, and is provided with two groups of first warp yarn detection groups and second warp yarn detection groups which are woven in parallel with each other and respectively consist of a plurality of conductive warp yarns;

[0008] The conductive warp yarns of the first warp yarn detection group are electrically connected with a conductive weft yarn in each minimum detection unit of the corresponding plurality of weft yarn detection groups in sequence along the depth direction at the same interlacing step frequency, and the interlacing step frequency is equal to the number of conductive warp yarns in the second warp yarn detection group;

[0009] The conductive warp yarns of the second warp yarn detection group correspond one-to-one with the single weft yarn detection groups corresponding to each group of the interlacing step frequency in sequence along the depth direction, and are electrically conductive with another conductive weft yarn in each minimum detection unit of the weft yarn detection group.

[0010] Further, the first warp yarn detection group of the side fabric edge area is configured with M conductive warp yarns; the second warp yarn detection group is configured with N conductive warp yarns;

[0011] The first conductive warp yarn of the first warp yarn detection group is respectively conductively connected to one conductive weft yarn of each minimum detection unit in the N weft yarn detection groups within the first interlacing step frequency, and the first conductive warp yarn of the second warp yarn detection group is respectively conductively connected to another conductive weft yarn of each minimum detection unit in the first weft yarn detection group within the first interlacing step frequency;

[0012] By analogy, the Mth conductive warp yarn of the first warp yarn detection group is respectively conductive with one conductive weft yarn of the K smallest detection units in the N weft yarn detection group within the Mth interlacing step frequency, and the Nth conductive warp yarn of the second warp yarn detection group is respectively conductive with another conductive weft yarn of the K smallest detection unit in the Nth weft yarn detection group within the Mth interlacing step frequency;

[0013] M*N weft yarn detection groups are arranged along the depth direction in the main fabric area, and each weft yarn detection group includes K minimum detection units, wherein M, N, and K are positive integers.

[0014] Furthermore, the conductive weft yarn and the conductive warp yarn are electrically insulated by passing the conductive weft yarn through one non-conductive warp yarn on the left and right of the conductive warp yarn and one non-conductive warp yarn below the conductive warp yarn.

[0015] Furthermore, the conductive weft yarn and the conductive warp yarn are electrically conductive at the locations where the conductive weft yarn passes through a non-conductive warp yarn on the left and right of the conductive warp yarn and is stretched and woven in contact with each other under the conductive warp yarn.

[0016] Furthermore, the side fabric edge area forms an upper and lower two-layer warp yarn structure and adopts a three-upper-lower heavy warp structure.

[0017] Furthermore, the conductive weft yarns are woven at intervals of 2-10 mm.

[0018] In a second aspect, the present invention provides a structural weaving state testing device for a conductive liquid trace leakage positioning detection sensor fabric as described in any one of the first aspects, comprising a cloth winding roller, a cloth placing roller, a cloth table, an electric slip ring and an external detection circuit;

[0019] The cloth rolling roller and the cloth placing roller are respectively arranged on the front and rear sides of the table, and are used for rolling and releasing the sensing fabric and making the sensing fabric slide on the table;

[0020] The connecting wires of each conductive warp yarn of the sensing fabric are respectively passed through the routing grooves on the surface of the cloth winding roller, and are electrically connected to an inlet end of an electric slip ring coaxially arranged on one side of the cloth winding roller, and the outlet ends of the electric slip ring are respectively electrically connected to an external detection circuit;

[0021] Two conductive rollers are arranged above the cloth table and can move in three dimensions and are electrically connected to two ends of the external detection circuit. The two conductive rollers are arranged to be in electrical contact with the same conductive weft yarn in the main cloth area of ​​the sensing fabric.

[0022] Furthermore, the external detection circuit includes a plurality of detection light-emitting units connected in parallel and an indication light-emitting unit;

[0023] One end of the detection light-emitting unit is electrically connected to the output end of the electric slip ring, and the other end of the light-emitting unit is electrically connected to one of the conductive rollers after being connected in series with a power source;

[0024] One end of the indicating light emitting unit is connected in series with a power source and then electrically connected to one of the conductive rollers, and the other end of the indicating light emitting unit is electrically connected to another of the conductive rollers.

[0025] Furthermore, the detection light-emitting unit and the indication light-emitting unit both include a resistor and an LED light-emitting diode connected in series.

[0026] Furthermore, when the two conductive rollers electrically contact the same conductive weft yarn in the main fabric area downward, a complete detection loop is formed, and a structural weaving state test is performed:

[0027] When the conductive roller contacts the conductive weft yarn, firstly, it is determined whether the LED light emitting diode of the detection light emitting unit is lit;

[0028] If it is lit, it is determined that the two conductive rollers are in contact with the same conductive weft yarn; and then it is determined whether the other indicating light-emitting units are lit:

[0029] If the LED light emitting diode of the corresponding indicating light emitting unit lights up, it is determined that the structural weaving state of the corresponding conductive weft yarn is intact;

[0030] If two or more LED light emitting diodes of the indicating light emitting units light up or no LED light emitting diode lights up, it is determined that the structural weaving state of the corresponding conductive weft yarn is defective.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The conductive liquid trace leakage positioning detection sensing fabric and the structural weaving state testing device provided by the present invention adopt a weft yarn detection group composed of two conductive weft yarns evenly spaced in the main fabric area, and a first warp yarn detection group and a second warp yarn detection group composed of a plurality of conductive warp yarns are configured in the side fabric edge area, and the electrical conduction relationship between the conductive warp yarns and the conductive weft yarns is reasonably arranged, so that the sensing fabric can use fewer conductive warp yarns to obtain more and more accurate leakage detection areas in the depth direction, and under the condition of detection with the help of an external detection circuit, the structural weaving state can be quickly and accurately tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1-2 A schematic diagram of a conductive liquid trace leakage positioning detection sensing fabric provided according to an embodiment of the present invention;

[0034] Figure 3 A latitudinal cross-sectional view of an electrical insulation portion provided according to an embodiment of the present invention;

[0035] Figure 4 A longitudinal cross-sectional view of an electrical insulation portion provided according to an embodiment of the present invention;

[0036] Figure 5 A latitudinal cross-sectional view of an electrically conductive portion provided according to an embodiment of the present invention;

[0037] Figure 6 A longitudinal cross-sectional view of an electrically conductive portion provided according to an embodiment of the present invention;

[0038] Figure 7 A cross-sectional view of a sensing fabric along a conductive weft yarn according to an embodiment of the present invention;

[0039] Figure 8 A slice diagram of a sensing fabric along a conductive warp yarn according to an embodiment of the present invention;

[0040] Fig. 9 It is a schematic diagram of the structure of a structural weaving state testing device provided according to an embodiment of the present invention;

[0041] Figure 10-11 A schematic diagram of testing a sensing fabric according to an embodiment of the present invention.

[0042] In the figure:

[0043] 101. fabric; 102. cloth winding roller; 103. cloth placing roller; 104. conductive roller; 105. warp conductor output end; 106. electric slip ring; 107. output end of the electric slip ring; 108. fabric table. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0047] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, a conductive liquid trace leakage positioning detection sensor fabric is provided, comprising:

[0048] The main fabric area is provided with a number of non-conductive warp yarns and non-conductive weft yarns interlaced vertically and horizontally, and a number of conductive weft yarns parallel to the non-conductive weft yarns are woven evenly spaced in the longitudinal direction of the warp yarns (yarn arrangement is performed by a conventional weaving process), and the conductive weft yarns are divided into a number of weft yarn detection groups, and each weft yarn detection group contains a number of minimum detection units consisting of two adjacent conductive weft yarns;

[0049] The side fabric edge area is arranged on at least one side of the main fabric area along the longitudinal direction of the warp yarns, and is provided with two groups of first warp yarn detection groups and second warp yarn detection groups which are woven in parallel with each other and respectively consist of a plurality of conductive warp yarns;

[0050] The conductive warp yarns of the first warp yarn detection group are electrically connected with a conductive weft yarn in each minimum detection unit of the corresponding multiple weft yarn detection groups in sequence along the depth direction at the same interlacing step frequency, and the interlacing step frequency is equal to the number of conductive warp yarns in the second warp yarn detection group;

[0051] Several conductive warp yarns of the second warp yarn detection group correspond one-to-one with the single weft yarn detection group corresponding to each interlacing step frequency in sequence along the depth direction, and are electrically conductive with another conductive weft yarn in each minimum detection unit of the weft yarn detection group.

[0052] Specifically, the first warp yarn detection group in the side fabric edge area is configured with M conductive warp yarns; the second warp yarn detection group is configured with N conductive warp yarns;

[0053] The first conductive warp yarn of the first warp yarn detection group is respectively conductively connected to one conductive weft yarn of each minimum detection unit in the N weft yarn detection groups within the first interlacing step frequency, and the first conductive warp yarn of the second warp yarn detection group is respectively conductively connected to another conductive weft yarn of each minimum detection unit in the first weft yarn detection group within the first interlacing step frequency;

[0054] By analogy, the Mth conductive warp yarn of the first warp yarn detection group is respectively conductive with one conductive weft yarn of the K smallest detection units in the N weft yarn detection group within the Mth interlacing step frequency, and the Nth conductive warp yarn of the second warp yarn detection group is respectively conductive with another conductive weft yarn of the K smallest detection unit in the Nth weft yarn detection group within the Mth interlacing step frequency;

[0055] M*N weft yarn detection groups are arranged along the depth direction in the main fabric area, and each weft yarn detection group includes K minimum detection units, wherein M, N, and K are positive integers.

[0056] Figure 1 As shown, the conductive liquid leakage location detection sensor fabric uses a first warp yarn detection group configured with 3 conductive warp yarns; the second warp yarn detection group is configured with 3 conductive warp yarns, a total of 3+3=6 conductive warp yarns. At the same time, the main fabric area is divided into 9 weft yarn detection groups along the warp yarn depth direction, namely weft yarn detection groups I to IX.

[0057] In the weft yarn detection group I, there are also several repeated minimum detection units. In this embodiment, two conductive weft yarns are set. The two conductive weft yarns of the detection unit are respectively connected to the conductive warp yarns 1 and i; in the subsequent weft yarn detection group II area, the two conductive weft yarns are respectively connected to the conductive warp yarns 1 and ii; in the weft yarn detection group III area, the two conductive weft yarns are respectively connected to the conductive warp yarns 1 and iii; in the weft yarn detection group IV area, the conductive weft yarns are respectively connected to the conductive warp yarns 2 and i; the remaining areas are shown in the figure.

[0058] In this embodiment, if the distance between two adjacent conductive weft yarns is 1 cm, then in each weft yarn detection group area, the number K of the minimum detection units is 50, which means that the two conductive weft yarns of the minimum detection unit are repeated 50 times, thereby forming a weft yarn detection group with a length of 1 m along the depth direction of the warp yarn.

[0059] When used for status testing or leakage detection, the scanning order of the conductive warp yarns is also changed accordingly: 1-i, 1-ii, 1-iii, 2-i, 2-ii, 2-iii, 3-i, 3-ii, 3-iii. For example, if the scanning finds that 1-ii is conductive, there is liquid leakage in the corresponding weft yarn detection group II; if the scanning finds that 3-ii is conductive, there is liquid leakage in the corresponding weft yarn detection group VIII, and so on.

[0060] Figure 2 As shown, the conductive liquid leakage location detection sensor fabric uses a first warp yarn detection group configured with 3 conductive warp yarns; the second warp yarn detection group is configured with 4 conductive warp yarns, a total of 3+4=7 conductive warp yarns. At the same time, the main fabric area is divided into 12 weft yarn detection groups along the warp yarn depth direction, namely weft yarn detection groups I to XII.

[0061] In the weft yarn detection group I, there are also several repeated minimum detection units. In this embodiment, two conductive weft yarns are set. The two conductive weft yarns of the detection unit are respectively connected to the conductive warp yarns 1 and i; in the subsequent weft yarn detection group II area, the two conductive weft yarns are respectively connected to the conductive warp yarns 1 and ii; in the weft yarn detection group III area, the two conductive weft yarns are respectively connected to the conductive warp yarns 1 and iii; in the weft yarn detection group IV area, the conductive weft yarns are respectively connected to the conductive warp yarns 1 and iv; the remaining areas are shown in the figure.

[0062] In this embodiment, if the distance between two adjacent conductive weft yarns is 1 cm, then in each weft yarn detection group area, the number K of the minimum detection units is 50, which means that the two conductive weft yarns of the minimum detection unit are repeated 50 times, thereby forming a weft yarn detection group with a length of 1 m along the depth direction of the warp yarn.

[0063] When used for status testing or leakage detection, the scanning order of the conductive warp yarns is also changed accordingly: 1-i, 1-ii, 1-iii, 1-iv, 2-i, 2-ii, 2-iii, 2-iv, 3-i, 3-ii, 3-iii, 3-iv. For example, if the scanning finds that 1-ii is conductive, there is liquid leakage in the corresponding weft yarn detection group II area; if the scanning finds that 3-i is conductive, there is liquid leakage in the corresponding weft yarn detection group IX area, and so on.

[0064] It should be noted that the above embodiment is applied to a small prototype machine for trial weaving. Due to the machine conditions, only 3+3=6 warp yarns are woven, forming 3*3=9 detection groups; or 3*4=12 detection groups. In practical applications, when it is necessary to partition over a distance of tens or hundreds of meters, more partitions such as 8*8, 10*10, etc. can be fully realized by using the multi-arm loom and jacquard loom in real production. In the technical solution of the present invention, the actual application values ​​of M and N should adapt to the actual production needs and are not particularly limited.

[0065] like Figure 3 , Figure 4 As shown, the conductive weft yarn and the conductive warp yarn are electrically insulated, with the conductive weft yarn passing through a non-conductive warp yarn on the left and right of the conductive warp yarn and a non-conductive warp yarn below the conductive warp yarn.

[0066] Figure 3 The weft cross-section diagram of the conductive weft yarn shows that according to the organization rules, there are three non-conductive warp yarns around the conductive warp yarn. The conductive weft yarn bypasses these three non-conductive warp yarns and does not contact the conductive warp yarns, thus achieving mutual isolation, that is, electrical insulation. Figure 4 The warp section of the conductive warp yarn in the middle shows that according to the organization rule, a non-conductive warp yarn is placed under the conductive warp yarn, thereby isolating the conductive warp and weft yarns.

[0067] like Figure 5 , Figure 6 As shown, the conductive weft yarn and the conductive warp yarn are electrically conductive. The conductive weft yarn passes through a non-conductive warp yarn on the left and right of the conductive warp yarn and is stretched and woven under the conductive warp yarn. The figure shows the floating and sinking rules of the warp and weft yarns. In actual fabrics, since the warp and weft yarns have a large tension, the warp and weft yarns will be as close and in contact as possible. In addition, Figure 5 , Figure 6 It is only a local structure, so the special situation that the warp yarn "three" is not interwoven with the weft yarn does not affect the formation of the entire fabric.

[0068] In this embodiment, the side fabric edge area forms an upper and lower two-layer warp yarn structure, and adopts a three-up and one-down heavy warp structure.

[0069] Figure 7 The cross-sectional view of the fabric is obtained along the conductive weft direction. The cross-sectional view is obtained by coating the fabric with collodion and then cutting it along the conductive weft with a blade after drying. Figure 7 This is a photo of a section along the conductive weft yarn under a 40x microscope, where: Figure 7 a It can be seen that the conductive weft yarn is fully isolated from the conductive warp yarn, creating good conditions for insulation; Figure 7 b It can be seen that the conductive weft yarn is in full contact with the conductive warp yarn, creating good conditions for conduction.

[0070] Figure 8 It is a cross-sectional view of the prepared fabric along the conductive warp yarn direction. Figure 8 a It can be seen that the conductive weft yarn is fully isolated from the conductive warp yarn, creating good conditions for insulation; Figure 8 b It can be seen that the conductive weft yarn is in full contact with the conductive warp yarn, creating good conditions for conduction. Figure 8 It can be seen that, viewed along the direction of the conductive warp yarn, it can also be fully isolated from or in contact with the conductive weft yarn.

[0071] Above Figure 7-Figure 8 The slice observation is a destructive experiment and is not suitable for testing the conduction and insulation of all the conductive warp and weft yarns in the fabric under non-destructive conditions. In order to verify the accuracy of the fabric structure, that is, whether the fabric has fully realized Figure 1 , Figure 2 The design structure of the present invention is designed in the technical solution Fig. 9 and Figure 10-11 The structural weaving state testing device for the fabric structure is shown.

[0072] like Fig. 9 and Figure 10-11 As shown, the present invention provides a structural weaving state testing device for the conductive liquid trace leakage positioning detection sensor fabric as mentioned above, including a cloth winding roller, a cloth placing roller, a cloth table, an electric slip ring and an external detection circuit.

[0073] The cloth rolling roller and the cloth releasing roller are respectively arranged on the front and rear sides of the table, and are used for rolling and releasing the sensing fabric and making the sensing fabric slide on the table.

[0074] The connecting wires of each conductive warp yarn of the sensing fabric pass through the routing grooves on the surface of the cloth winding roller and are electrically connected to an input end of an electric slip ring coaxially arranged on one side of the cloth winding roller. The output ends of the electric slip ring are electrically connected to an external detection circuit.

[0075] Two conductive rollers are arranged above the cloth table, which can move in three-dimensional directions and are electrically connected to two ends of an external detection circuit. The two conductive rollers are arranged to electrically contact the same conductive weft yarn in the main cloth area of ​​the sensing fabric.

[0076] Specifically, the external detection circuit includes a plurality of detection light-emitting units connected in parallel and an indication light-emitting unit.

[0077] One end of the detection light-emitting unit is electrically connected to the output end of the electric slip ring, and the other end of the light-emitting unit is electrically connected to a conductive roller after being connected in series with a power supply;

[0078] One end of the indicating light emitting unit is connected in series with a power source and then electrically connected to a conductive roller, and the other end of the indicating light emitting unit is electrically connected to another conductive roller.

[0079] Specifically, the detection light-emitting unit and the indication light-emitting unit both include a resistor and an LED light-emitting diode connected in series.

[0080] Among them, Fig.10 As shown, the detection light-emitting unit includes a resistor R0 and a light-emitting diode LED0. The indication light-emitting unit includes a resistor R1 and a light-emitting diode LED1, a resistor R2 and a light-emitting diode LED2, a resistor R3 and a light-emitting diode LED3, a resistor R4 and a light-emitting diode LED4, a resistor R5 and a light-emitting diode LED5, and a resistor R6 and a light-emitting diode LED6. Fig.11 The middle indicator light emitting unit further includes a resistor R7 and a light emitting diode LED7.

[0081] When the two conductive rollers electrically contact the same conductive weft yarn in the main fabric area, a complete detection circuit is formed and the structural weaving status test is performed:

[0082] When the conductive roller contacts the conductive weft yarn, firstly, it is determined whether the LED light emitting diode of the detection light emitting unit is lit;

[0083] If it is lit, it is determined that the two conductive rollers are in contact with the same conductive weft yarn; and then it is determined whether other indicating light-emitting units are lit:

[0084] If the LED light-emitting diode of the corresponding indicating light-emitting unit lights up, it is determined that the structural weaving state of the corresponding conductive weft yarn is intact;

[0085] If more than two LED light emitting diodes of the indicating light emitting units light up or no LED light emitting diode lights up, it is determined that the structural weaving state of the corresponding conductive weft yarn is defective.

[0086] use Fig.10 After the fabric is tested to be normal in the middle circuit, the verification test simulates the actual use scenario and Figure 1 Conductive liquid was randomly dropped on the 9 test group areas shown in the figure, and the conduction between the corresponding two conductive warp yarns was measured to infer the location of the conductive liquid. The test was carried out 9 times, and each test was carried out after the previous test and when the fabric was completely dry (using a hair dryer to accelerate drying). The test results are shown in Table 1.

[0087] Table 1 Fabric positioning detection function test results

[0088]

[0089] In addition, if the Fig.11 After the fabric is tested to be normal in the middle circuit, the verification test simulates the actual use scenario and Figure 1Conductive liquid was randomly dripped onto the 12 test group areas shown in the figure, and the conduction between the corresponding two conductive warp yarns was measured to infer the location of the conductive liquid. The test was conducted 12 times, and each test was conducted after the previous test and when the fabric was completely dry (using a hair dryer to accelerate drying). The test results are shown in Table 2.

[0090] Table 2 Fabric positioning detection function test results

[0091]

[0092]

[0093] Tables 1 and 2 show that the test fabric can accurately feedback the location of liquid leakage. In addition, the two conductive warp yarns in Tables 1 and 2 show a large resistance (kilo-ohm level) when they are turned on, and the resistance value is not constant. The reason for this phenomenon is that the ordinary tap water used in the experiment itself has a general conductivity, and factors such as diffusion and evaporation further affect the conductivity, causing the resistance value to change. Despite this, the resistance values ​​in Tables 1 and 2 are all below 500kΩ. In practice, a threshold value can be set as a basis for judging whether it is turned on or not. It is worth pointing out that it is precisely this uncertainty in the conduction resistance that makes it particularly difficult to implement the resistance method to locate the leakage position on the fabric, and partition detection appears to be more feasible.

[0094] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A conductive liquid trace leakage location detection sensor fabric, characterized in that: include: The main fabric area is provided with a plurality of non-conductive warp yarns and non-conductive weft yarns interlaced vertically and horizontally, and a plurality of conductive weft yarns parallel to the non-conductive weft yarns are evenly spaced in the longitudinal direction of the warp yarns, the conductive weft yarns are divided into a plurality of weft yarn detection groups, and each of the weft yarn detection groups contains a plurality of minimum detection units consisting of two adjacent conductive weft yarns; A side fabric edge area is arranged on at least one side of the main fabric area along the depth direction of the warp yarns, and is provided with two groups of first warp yarn detection groups and second warp yarn detection groups which are woven in parallel with each other and respectively consist of a plurality of conductive warp yarns; The conductive warp yarns of the first warp yarn detection group are electrically connected with a conductive weft yarn in each minimum detection unit of the corresponding plurality of weft yarn detection groups in sequence along the depth direction at the same interlacing step frequency, and the interlacing step frequency is equal to the number of conductive warp yarns in the second warp yarn detection group; The conductive warp yarns of the second warp yarn detection group correspond one-to-one with the single weft yarn detection groups corresponding to each group of the interlacing step frequency in sequence along the depth direction, and are electrically conductive with another conductive weft yarn in each minimum detection unit of the weft yarn detection group.

2. The conductive liquid trace leakage location detection sensor fabric according to claim 1 is characterized in that: The first warp yarn detection group of the side fabric edge area is configured with M conductive warp yarns; the second warp yarn detection group is configured with N conductive warp yarns; The first conductive warp yarn of the first warp yarn detection group is respectively conductively connected to one conductive weft yarn of each minimum detection unit in the N weft yarn detection groups within the first interlacing step frequency, and the first conductive warp yarn of the second warp yarn detection group is respectively conductively connected to another conductive weft yarn of each minimum detection unit in the first weft yarn detection group within the first interlacing step frequency; By analogy, the Mth conductive warp yarn of the first warp yarn detection group is respectively conductive with one conductive weft yarn of the K smallest detection units in the N weft yarn detection group within the Mth interlacing step frequency, and the Nth conductive warp yarn of the second warp yarn detection group is respectively conductive with another conductive weft yarn of the K smallest detection unit in the Nth weft yarn detection group within the Mth interlacing step frequency; M*N weft yarn detection groups are arranged along the depth direction in the main fabric area, and each weft yarn detection group includes K minimum detection units, wherein M, N, and K are positive integers.

3. The conductive liquid trace leakage location detection sensor fabric according to claim 1, characterized in that: The conductive weft yarn and the conductive warp yarn are electrically insulated, and the conductive weft yarn passes through a non-conductive warp yarn on the left and right of the conductive warp yarn and a non-conductive warp yarn below the conductive warp yarn.

4. The conductive liquid trace leakage location detection sensor fabric according to claim 3 is characterized in that: The conductive weft yarn and the conductive warp yarn are electrically conductive at the locations where the conductive weft yarn passes through a non-conductive warp yarn on the left and right of the conductive warp yarn and is tensioned and woven under the conductive warp yarn.

5. The conductive liquid trace leakage location detection sensor fabric according to claim 1, characterized in that: The side fabric edge area forms an upper and lower two-layer warp yarn structure and adopts a three-up and one-down heavy warp structure.

6. The conductive liquid trace leakage location detection sensor fabric according to claim 1, characterized in that: The conductive weft yarns are woven at intervals of 2-10 mm.

7. A structural weaving state testing device for the conductive liquid trace leakage positioning detection sensor fabric as claimed in any one of claims 1 to 6, characterized in that: It includes cloth winding roller, cloth placing roller, cloth table, electric slip ring and external detection circuit; The cloth rolling roller and the cloth placing roller are respectively arranged on the front and rear sides of the table, and are used for rolling and releasing the sensing fabric and making the sensing fabric slide on the table; The connecting wires of each conductive warp yarn of the sensing fabric are respectively passed through the routing grooves on the surface of the cloth winding roller, and are electrically connected to an inlet end of an electric slip ring coaxially arranged on one side of the cloth winding roller, and the outlet ends of the electric slip ring are respectively electrically connected to an external detection circuit; Two conductive rollers are arranged above the cloth table and can move in three dimensions and are electrically connected to two ends of the external detection circuit. The two conductive rollers are arranged to be in electrical contact with the same conductive weft yarn in the main cloth area of ​​the sensing fabric.

8. The structural weaving state testing device for the conductive liquid trace leakage positioning detection sensor fabric according to claim 7 is characterized in that: The external detection circuit includes a plurality of detection light-emitting units connected in parallel and an indication light-emitting unit; One end of the detection light-emitting unit is electrically connected to the output end of the electric slip ring, and the other end of the light-emitting unit is electrically connected to one of the conductive rollers after being connected in series with a power source; One end of the indicating light emitting unit is connected in series with a power source and then electrically connected to one of the conductive rollers, and the other end of the indicating light emitting unit is electrically connected to another of the conductive rollers.

9. The conductive liquid trace leakage positioning detection sensor fabric structure weaving state testing device according to claim 8, characterized in that: The detection light-emitting unit and the indication light-emitting unit both include a resistor and an LED light-emitting diode connected in series.

10. The structural weaving state testing device for the conductive liquid trace leakage positioning detection sensor fabric according to claim 9, characterized in that: When the two conductive rollers electrically contact the same conductive weft yarn in the main fabric area downward, a complete detection loop is formed, and a structural weaving state test is performed: When the conductive roller contacts the conductive weft yarn, firstly, it is determined whether the LED light emitting diode of the detection light emitting unit is lit; If it is lit, it is determined that the two conductive rollers are in contact with the same conductive weft yarn; and then it is determined whether the other indicating light-emitting units are lit: If the LED light emitting diode of the corresponding indicating light emitting unit lights up, it is determined that the structural weaving state of the corresponding conductive weft yarn is intact; If two or more LED light emitting diodes of the indicating light emitting units light up or no LED light emitting diode lights up, it is determined that the structural weaving state of the corresponding conductive weft yarn is defective.

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