Smart Mat and Smart Mat Multi-Point Detection Method

Abstract

A smart mat and a method for multi-point detection of a smart mat. The smart mat includes a first surface layer (110), a second surface layer (120), a pressure change sensing layer (200), and a detection module. The pressure change sensing layer (200) is located between the first surface layer (110) and the second surface layer (120) and includes a first electrode layer (210), a conductive layer (230), and a second electrode layer (220). The first electrode layer (210) includes a plurality of first lead wires (211) extending in a first direction and installed at intervals, and the second electrode layer (220) includes a plurality of second lead wires (221) extending in a second direction intersecting the first direction and installed at intervals. The conductive layer (230) includes a plurality of conductive strips (231) that extend in a first direction and are installed at intervals, with the plurality of conductive strips (231) being installed in one-to-one correspondence with a plurality of first lead wires (211). The detection module is connected to the plurality of first lead wires (211) and the plurality of second lead wires (221), respectively. The detection module sequentially inputs detection signals to the plurality of first lead wires (211) and acquires electrical signals from the plurality of second lead wires (221), and outputs position signals of the first lead wires (211) and second lead wires (221) whose electrical signals have changed.

Description

Technical Field

[0001] <Cross - reference to Related Applications> This application claims the priority of a Chinese patent application titled "Smart Mat and Multi - point Detection Method of Smart Mat" with an application number of 202311195487.9, filed on September 15, 2023, the full text of which is hereby incorporated by reference into this application.

[0002] This disclosure relates to the technical field of smart mats, specifically, to smart mats and multi - point detection methods of smart mats.

Background Art

[0003] With the continuous improvement of people's living standards, more and more people are attaching importance to physical exercise. For example, fitness is carried out on fitness mats (yoga mats, dance mats). However, due to the insufficient proficiency of practitioners in related movements, the movements are likely to be inaccurate and incorrect operations may occur. In mild cases, it may cause damage to the muscles and skeletons of practitioners, and in severe cases, it may cause serious disabilities to practitioners. Also, for example, due to factors such as high work intensity and high stress, current people are paying more and more attention to sleep quality. When resting or sleeping on a mattress, there is a desire to grasp their own sleep quality.

[0004] In order to accurately guide the movement postures of practitioners on smart fitness mats, the compression positions on the smart fitness mats are determined, and by comparing the determined compression positions with the reference positions, it helps users to judge the accuracy of the current position. Also, in order to sense the position of the human body on the mat, the compression positions of the smart mattress are determined, and by analyzing the determined compression positions, the sleep state of the user is obtained. Therefore, a smart mat with a position - determination function and high position - determination accuracy is strongly desired.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The object of the embodiments of this disclosure is to provide a smart mat and a multi-point detection method for the smart mat that improve the accuracy of positioning the smart mat.

[0006] Other characteristics and benefits of this disclosure will become apparent from the following detailed description or will be partially recognized through the implementation of this disclosure. [Means for solving the problem]

[0007] One aspect of this disclosure provides a smart mat. The smart mat is A pressure change sensing layer comprising a first electrode layer, a conductive layer, and a second electrode layer located between the first surface layer and the second surface layer and sequentially laminated, wherein the first electrode layer includes a plurality of first lead wires extending in a first direction and installed at intervals, the second electrode layer includes a plurality of second lead wires extending in a second direction intersecting the first direction and installed at intervals, and the conductive layer includes a plurality of conductive strips extending in a first direction and installed at intervals, wherein the plurality of conductive strips are installed in one-to-one correspondence with the plurality of first lead wires. The system includes a detection module connected to each of the multiple first lead wires and the multiple second lead wires, which sequentially inputs a detection signal to the multiple first lead wires and acquires the electrical signals of the multiple second lead wires, thereby outputting position signals of the first lead wires and the second lead wires whose electrical signals have changed.

[0008] In one exemplary embodiment of the present disclosure, the detection module sequentially inputs the detection signal to a plurality of the first leads, Within one detection cycle, the detection module sequentially inputs a high level to a plurality of the first lead wires, and inputs a low level to the first lead wires that have not received a high level.

[0009] In one exemplary embodiment of the present disclosure, the detection module includes a plurality of acquisition terminal circuits connected in one-to-one correspondence to a plurality of the second leads, the acquisition terminal circuits include a first selector switch, the first selector switch includes a fixed terminal, a first connection terminal and a second connection terminal, the fixed terminal being connected to the second leads, the first connection terminal being connected to a sampling circuit and the second connection terminal being grounded.

[0010] In one exemplary embodiment of the present disclosure, the acquisition end circuit further includes a sampling-hold capacitor, the first electrode of the sampling-hold capacitor being connected to the second lead wire and the fixed terminal, and the second electrode of the sampling-hold capacitor being grounded.

[0011] In one exemplary embodiment of the present disclosure, the acquisition end circuit further includes a sampling resistor, the first terminal of the sampling resistor being connected to the second lead wire and the fixed terminal, and the second terminal of the sampling resistor being grounded.

[0012] In one exemplary embodiment of the present disclosure, the detection module further includes a plurality of second selector switches connected in one-to-one correspondence to a plurality of the first lead wires, the second selector switches including a fixed terminal, a first connection terminal and a second connection terminal, the fixed terminal being connected to the first lead wire, the first connection terminal being connected to a drive circuit and the second connection terminal being grounded.

[0013] In one exemplary embodiment of the present disclosure, a communication module is further included, which is connected to the detection module and transmits the detection data acquired by the detection module to a target terminal.

[0014] In one exemplary embodiment of the present disclosure, the length of the first lead wire in the first direction is greater than the length of the second lead wire in the second direction.

[0015] In one exemplary embodiment of the present disclosure, the number of conductive strips is the same as the number of the first lead wires.

[0016] In one exemplary embodiment of the present disclosure, the conductive layer is a conductive carbon film, and a plurality of conductive carbon strips formed by dividing the conductive carbon film function as a plurality of conductive strips.

[0017] Another aspect of the present disclosure provides a multipoint detection method for a smart mat. The multipoint detection method for a smart mat comprises supplying a smart mat, the smart mat comprising a first surface layer, a second surface layer, a pressure change sensing layer and a detection module, wherein the first surface layer and the second surface layer are installed facing each other, the pressure change sensing layer is located between the first surface layer and the second surface layer and comprises sequentially laminated first electrode layers, a conductive layer and a second electrode layer, the first electrode layer comprising a plurality of first lead wires extending in a first direction and installed at intervals, the second electrode layer comprising a plurality of second lead wires extending in a second direction intersecting the first direction and installed at intervals, the conductive layer comprising a plurality of conductive strips extending in a first direction and installed at intervals, the plurality of conductive strips being installed in one-to-one correspondence with a plurality of the first lead wires, and the detection module being connected to the plurality of the first lead wires and the plurality of the second lead wires, respectively. The detection module acquires reference electrical signals from multiple detection points formed between multiple first lead wires and multiple second lead wires while the smart mat is not compressed. Within one detection cycle, the detection module inputs a detection signal to one of the multiple first lead wires, acquires the second lead wire from the multiple second lead wires whose electrical signal has changed between it and the first lead wire to which the detection signal was input, and determines that the electrical signal has changed if the difference between the electrical signal at the detection point formed between the multiple second lead wires and the first lead wire to which the detection signal was input and the corresponding reference electrical signal is greater than a preset value. This includes repeating the steps of the previous detection cycle until the next detection cycle begins and detection signals are sequentially input to all first leads to complete the detection.

[0018] In one exemplary embodiment of the present disclosure, within one detection cycle, the detection module is discharged for a predetermined time, and a high level is input to one of the target first lead wires among a plurality of first lead wires.

[0019] In the smart mat provided by this disclosure, the pressure change sensing layer is located between a first surface layer and a second surface layer, and is protected by the first and second surface layers. In the direction from the first surface layer toward the second surface layer, the pressure change sensing layer includes sequentially laminated first electrode layers, conductive layers, and second electrode layers. The first electrode layer includes a plurality of first lead wires extending in a first direction and spaced apart, and the second electrode layer includes a plurality of second lead wires extending in a second direction and spaced apart. By installing a plurality of conductive strips in one-to-one correspondence with a plurality of first lead wires, when a first lead wire corresponding to a pressure point on the fitness mat is subjected to pressure, the compressive force applied by the first and second lead wires to the corresponding conductive strip below it increases, the contact area between the conductive strip and the first lead wire, and the contact area between the conductive strip and the second lead wire increase, and the resistance between the first and second lead wires decreases. The detection module is connected to multiple first lead wires and multiple second lead wires, respectively. It sequentially inputs detection signals to the multiple first lead wires and acquires electrical signals from the multiple second lead wires. It outputs position signals for the first and second lead wires whose resistance values ​​have changed. Based on the positions of the first and second lead wires whose resistance values ​​have changed, it determines the compression position of the fitness mat, provides the compression position as reference information to the user, identifies the stepping position, and assists in determining whether the operation is standardized. [Brief explanation of the drawing]

[0020] The accompanying drawings are incorporated as part of this specification, show embodiments of the present disclosure, and, in conjunction with the specification, explain the principles of the present disclosure. It is clear that the accompanying drawings in the following description are only some embodiments of the present disclosure, and it is obvious that other accompanying drawings can be obtained based on these accompanying drawings without the need for creative efforts by those skilled in the art. [Figure 1] It is a schematic diagram of a smart mat provided by an embodiment of the present disclosure. [Figure 2] It is an exploded view of a smart mat provided by an embodiment of the present disclosure. [Figure 3] It is an exploded view of a pressure change sensing layer provided by an embodiment of the present disclosure. [Figure 4] It is a schematic diagram of a first electrode layer provided by an embodiment of the present disclosure. [Figure 5] It is a schematic diagram of a second electrode layer provided by an embodiment of the present disclosure. [Figure 6] It is a schematic diagram of a conductive layer provided by an embodiment of the present disclosure. [Figure 7] It is a schematic diagram of an equivalent circuit of a conductive layer provided by the present disclosure. [Figure 8] It is a schematic diagram of an equivalent circuit between a first lead wire and a conductive layer, and an equivalent circuit between a second lead wire and a conductive layer provided by the present disclosure. [Figure 9] It is a schematic diagram of an equivalent circuit of a first electrode layer provided by the present disclosure. [Figure 10] It is a schematic diagram of an equivalent circuit of a first electrode layer provided by an embodiment of the present disclosure. [Figure 11] It is a schematic diagram when a misjudgment occurs in an equivalent circuit of a first lead wire and a second lead wire provided by the present disclosure. [Figure 12] It is a schematic diagram when eliminating a misjudgment in an equivalent circuit of a first lead wire and a second lead wire provided by an embodiment of the present disclosure. [Figure 13] It is a schematic diagram of a pressure change sensing layer and a sampling circuit provided by an embodiment of the present disclosure. [Figure 14] It is a schematic diagram of a second selection switch provided by an embodiment of the present disclosure. [Modes for carrying out the invention]

[0021] The embodiments will now be described in more detail with reference to the drawings. However, the embodiments can be implemented in various forms and should not be understood as being limited to the examples described herein. Rather, these embodiments make the disclosure more comprehensive and complete and fully convey the ideas of the embodiments to those skilled in the art.

[0022] Furthermore, the described features, structures, or properties can be combined in any suitable manner in one or more embodiments. The following description provides many specific details to fully understand the embodiments of this disclosure. However, those skilled in the art will recognize that the technical problem of this disclosure can be achieved even if one or more specific details are omitted, or other methods, components, apparatus, procedures, etc., can be employed. In other cases, detailed descriptions or explanations of known methods, apparatus, means of implementation, or operations are omitted so as not to obscure any aspect of this disclosure.

[0023] The illustrated block diagram represents only functional blocks and does not necessarily have to correspond to physically independent entities. In other words, these functional blocks can be implemented in software, by one or more hardware modules or integrated circuits, or by different networks and / or processor devices and / or microcontroller devices.

[0024] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily have to include all content, operations, and procedures, nor does it have to be performed in the order shown. For example, some operations / procedures may be broken down, and some operations / procedures may be integrated or partially integrated, so the actual execution order may change depending on the circumstances.

[0025] Embodiments of the present disclosure provide a smart mat. As shown in Figures 1 to 6, the smart mat includes a first surface layer 110, a second surface layer 120, a pressure change sensing layer 200, and a detection module. The first surface layer 110 is installed opposite the second surface layer 120. The pressure change sensing layer 200 is located between the first surface layer 110 and the second surface layer 120. The pressure change sensing layer 200 includes a sequentially laminated first electrode layer 210, a conductive layer 230, and a second electrode layer 220. The first electrode layer 210 includes a plurality of first lead wires 211 extending in a first direction X and installed at intervals, and the second electrode layer 220 includes a plurality of second lead wires 221 extending in a second direction Y intersecting the second direction Y and installed at intervals. The conductive layer 230 includes a plurality of conductive strips 231 that extend in a first direction X and are installed at intervals, with each conductive strip 231 corresponding one-to-one with a plurality of first lead wires 211. The detection module is connected to the plurality of first lead wires 211 and the plurality of second lead wires 221, respectively. The detection module sequentially inputs detection signals to the plurality of first lead wires 211, acquires electrical signals from the plurality of second lead wires 221, and outputs position signals of the first lead wires 211 and the second lead wires 221 whose electrical signals have changed. The electrical signals are at least one of resistance, voltage, and current.

[0026] In the smart mat provided by this disclosure, the pressure change sensing layer 200 is located between a first surface layer 110 and a second surface layer 120, and is protected by the first surface layer 110 and the second surface layer 120. In the direction from the first surface layer 110 to the second surface layer 120, the pressure change sensing layer 200 includes sequentially laminated first electrode layer 210, conductive layer 230, and second electrode layer 220. The first electrode layer 210 includes a plurality of first lead wires 211 extending in a first direction X and installed at intervals, and the second electrode layer 220 includes a plurality of second lead wires 221 extending in a second direction Y and installed at intervals. By arranging multiple conductive strips 231 in one-to-one correspondence with multiple first lead wires 211, when a first lead wire 211 corresponding to a pressure point on the fitness mat is subjected to pressure, the compressive force applied by the first lead wire 211 and the second lead wire 221 to the corresponding conductive strip 231 below it increases. This increases the contact area between the conductive strip 231 and the first lead wire 211, and between the conductive strip 231 and the second lead wire 221, thereby reducing the resistance between the first lead wire 211 and the second lead wire 221. The detection module is connected to the multiple first lead wires 211 and the multiple second lead wires 221, respectively. The detection module sequentially inputs detection signals to multiple first lead wires 211, acquires electrical signals from multiple second lead wires 221, compares the acquired electrical signals with reference electrical signals of corresponding detection points acquired when the fitness mat is not compressed, and outputs positional information of the first lead wires 211 and second lead wires 221 whose resistance has changed. Based on the positions of the first lead wires 211 and second lead wires 221 whose electrical signals have changed, the compression position of the fitness mat is determined, the compression position is fed back to the user as reference information, the stepping position is identified, and the suitability of the operation standard is clarified.

[0027] Specifically, as shown in Figures 3 to 5, the length of the first lead wire 211 in the first direction X is greater than the length of the second lead wire 221 in the second direction Y. The dimensions of the first electrode layer 210 and the second electrode layer 220 in the first direction X and the second direction Y are the same; that is, the length of the first lead wire 211 corresponds to the length of the second electrode layer 220, and the length of the second lead wire 221 corresponds to the width of the first electrode layer 210. Therefore, the number of second lead wires 221 is greater than the number of first lead wires 211.

[0028] Of these, the first direction X is perpendicular to the second direction Y, that is, the first electrode layer 210 and the second electrode layer 220 are rectangular, and the pressure change sensing layer 200 formed by the first electrode layer 210 and the second electrode layer 220 is also rectangular. Of course, the angle between the first direction X and the second direction Y may be less than 90° or greater than 90°, and this disclosure is not limited thereto.

[0029] In one embodiment, the first surface layer 110 and the second surface layer 120 of the fitness mat are made of TPU material. The edges of the first surface layer 110 and the second surface layer 120 are sealed together to form a sealed chamber between the first surface layer 110 and the second surface layer 120. The edges of the first surface layer 110 and the edges of the second surface layer 120 can be sealed together by methods such as bonding with insulating adhesive, sewing, or weaving, and this disclosure is not limited thereto.

[0030] Of these, the pressure change sensing layer 200 is located between the first surface layer 110 and the second surface layer 120, with the first electrode layer 210 fixedly connected to the first surface layer 110 and the second electrode layer 220 fixedly connected to the second surface layer 120. The materials used for the first surface layer 110 and the second surface layer 120 have excellent deformability and self-healing capabilities, so that when an external force is applied, they undergo elastic deformation and can recover to their original shape when the external force is removed. As a result, the first electrode layer 210 and the second electrode layer 220 can recover to their original state after the external force is removed, thereby restoring the contact area between the first electrode layer 210 and the conductive layer 230, and between the second electrode layer 220 and the conductive layer 230.

[0031] Of these, the first electrode layer 210 and the first surface layer 110 can be connected by methods such as bonding or sewing, and the second electrode layer 220 and the second surface layer 120 can be connected by methods such as bonding or sewing.

[0032] In one embodiment, the fitness mat further includes an insulating layer. An insulating layer is provided between the first electrode layer 210 and the first surface layer 110, and between the second electrode layer 220 and the second surface layer 120. The installation of the insulating layer provides insulation for the fitness mat, preventing electric shock accidents to the user due to leakage current from the change-sensing layer 200 during use. Of course, both the first surface layer 110 and the second surface layer 120 may also be composed of insulating material to achieve insulation for the fitness mat.

[0033] In one embodiment, as shown in Figure 3, the first electrode layer 210, the conductive layer 230, and the second electrode layer 220 are sequentially laminated to create electrical conductivity on both opposing sides of the first electrode layer 210 and the conductive layer 230, and on both opposing sides of the second electrode layer 220 and the conductive layer 230. After sequentially laminating the first electrode layer 210, the conductive layer 230, and the second electrode layer 220, they can also be made into a single integrated structure by sewing.

[0034] As shown in Figure 4, the first electrode layer 210 includes a first substrate and a plurality of first lead wires 211, with the plurality of first lead wires 211 positioned on the first substrate. By making the first substrate, for example, a nonwoven fabric, and the first lead wires 211, for example, an aluminum foil material or a copper foil material, the conductivity of the first lead wires 211 is improved and the internal resistance of the first lead wires 211 is reduced. Of course, the plurality of first lead wires 211 may be, for example, a printed conductive layer containing carbon powder. The plurality of first lead wires 211 may be pre-formed on the first substrate by printing, or they may be adhered to the first substrate by double-sided tape.

[0035] As shown in Figure 5, the second electrode layer 220 includes a second substrate and a plurality of second lead wires 221, with the plurality of second lead wires 221 positioned on the second substrate. By making the second substrate, for example, a nonwoven fabric, and the second lead wires 221, for example, an aluminum foil material or a copper foil material, the conductivity of the second lead wires 221 is improved and the internal resistance of the second lead wires 221 is reduced. Of course, the plurality of second lead wires 221 may be a printed conductive layer containing carbon powder or the like. The plurality of second lead wires 221 may be pre-formed on the second substrate by printing, or they may be adhered to the second substrate by double-sided tape.

[0036] In one embodiment, as shown in Figure 6, the material of the conductive layer 230 is a conductive carbon film, that is, multiple conductive strips 231 are strip-shaped carbon films. When the strip-shaped carbon film is compressed, the contact area with the first lead wire 211 and the contact area with the second lead wire 221 increase, and the resistance values ​​between the compressed strip-shaped carbon film and the first lead wire 211 and the second lead wire 221 change significantly. As a result, when compressed, the resistance values ​​between the corresponding first lead wire 211 and second lead wire 221 change. Because the conductive carbon film is formed to be thin, even when used in a fitness mat, it does not affect the overall thickness of the fitness mat, and no noticeable bumps are created on the fitness mat, improving the user experience.

[0037] Specifically, as shown in Figure 7, since the conductive carbon film itself is a conductor, a change in potential at any point in the matrix sampling process inevitably affects the entire conductive carbon film. The change in resistance of the conductive carbon film due to pressure is achieved by changing the area of ​​contact resistance in the thickness direction of the smart mat. That is, the resistance at a certain point can be considered as the sum of the contact resistances above and below the conductive carbon film, i.e., the sum of R1 and R2 shown in Figure 8. The amount of change in resistance is directly proportional only to the change in the size of the contact area due to pressure, regardless of deformation. In Figure 7, L1, L2, L3, and L4 are multiple first lead wires that are installed sequentially, R1, R2, and R3 are multiple second lead wires that are installed sequentially, and R is the equivalent resistance of the conductive layer 230 between the first lead wire 211 and the second lead wire 221. In Figure 8, R10 and R20 are the contact resistances of the conductive layer 230 between the first lead wire 211 and the second lead wire 221.

[0038] As can be seen from the equivalent circuit of the conductive carbon film shown in Figure 8, when current is passed through a column and the row is observed, the conductive resistance R of the conductive carbon film exists, so the total observed resistance R is R = R1 + R', of which R' is the parallel connection value of the contact resistance R2 and the in-plane equivalent resistance. If the condition R >> R2 is satisfied, then R' = R2 / n, and R is an approximation of the average resistance value of each column of the conductive carbon film. However, since the resistance value of R is negatively correlated with the length of the first lead wire 211, it is quite difficult to achieve R >> R2. Therefore, R' = R2 / n (where n is the number of second lead wires) does not actually hold true, and the value of R' is related to the length of the first lead wire 211, the conductivity coefficient of the conductive carbon film, and the degree of adhesion between the conductive carbon film and the second electrode layer 220 during manufacturing, i.e., R2.

[0039] As can be seen from the equivalent circuit of the same row shown in Figure 9, when pressure is applied to the same row, the contact resistance R1X of the upper layer of the conductive carbon film becomes very small. Because resistance R exists, there is always a circuit from the power supply through the conductive carbon film to the row, and the magnitude of the resistance observed at any point is also affected by the point of pressure, which can lead to misjudgment. In addition, due to the influence of the manufacturing process, the contact area of ​​the vertical contact resistance is unstable, so the point observed in the same row is actually the minimum value that can be observed in that row, which leads to the problem of reduced localized press sensitivity. Of these, R1X (X=1~5) and R2X (X=1~5) are the contact resistances between the first lead wire 211 and the second lead wire 221.

[0040] As shown in Figure 10, this disclosure forms multiple strip-shaped carbon films that do not affect each other by dividing the carbon film. In this case, the detected resistance R becomes R = R1 + R2, and lateral inter-row interference can be eliminated. As a result, the potential when the first lead wire 211 is sequentially energized does not crosstalk between the left and right sides, and during sampling, uncompressed points are not interfered with by compressed points, which prevents misjudgment.

[0041] In one embodiment, the conductive carbon film includes a plastic film and conductive carbon powder uniformly dispersed in the plastic film. By adjusting the ratio of carbon powder, the resistance value of the conductive carbon film can be adjusted. The higher the carbon powder content, the stronger the conductivity and the lower the resistance value of the conductive carbon film. In other words, the resistance value of the conductive carbon film is related not only to the contact area between the first lead wire 211, the second lead wire 221, and the conductive carbon film, but also to the carbon powder content within the conductive carbon film. The larger the contact area between the first lead wire 211 and the conductive carbon film, and the larger the contact area between the second lead wire 221 and the conductive carbon film, the lower the resistance value. The higher the carbon powder content within the conductive carbon film, the lower the resistance value.

[0042] Unlike the principle of creep-prone materials such as textiles, the resistance change between the conductive carbon film and the first electrode layer 210 and the second electrode layer 220 is not significantly affected by the resistance change of the carbon film itself due to compression, but rather by the change in the contact area between the upper and lower metal conductive layers and the carbon film. Due to the manufacturing process of the conductive carbon film itself, it is not possible for the carbon powder on the surface to be completely and uniformly dispersed, resulting in poor consistency in the resistance value of the conductive carbon film, and a judgment method using a unified standard is not suitable for such inconsistent conditions. In this disclosure, the detection circuit acquires electrical signals from multiple detection points formed between multiple first lead wires 211 and multiple second lead wires 221, and the acquired electrical signals from each detection point between the multiple first lead wires 211 and multiple second lead wires 221 can be referenced as a reference electrical signal. In a subsequent detection step, the acquired electrical signal from the detection point is compared with the previously acquired reference electrical signal, and it is determined whether or not the point is being compressed based on the change in the electrical signal. By comparing each detection point, it is possible to avoid misjudgments due to inconsistencies in electrical signals at each detection point, even if the carbon powder on the surface is not perfectly and uniformly dispersed due to the manufacturing process of the conductive carbon film itself, thereby improving the accuracy of detection.

[0043] As shown in Figure 11, the circles in the diagram represent the actual pressure points. During the scanning process, when current is applied to L1, the resistance values ​​at points (L3, R3), (L2, R3), (L2, R1), and (L1, R3) decrease due to the pressure. A high level is observed at point (L1, R1), and this point is determined to be compressed. This can lead to misjudgments where uncompressed points are affected by the compressed points.

[0044] As shown in Figure 2, the detection module includes a detection circuit 300. The detection circuit 300 periodically inputs a detection signal to the first lead wire 211 in the first electrode layer 210 and samples the second lead wire 221 to determine the locations of the first lead wire 211 and the second lead wire 221 whose resistance has decreased, among a plurality of first lead wires 211 and a plurality of second lead wires 221.

[0045] Specifically, within one detection cycle, the detection module sequentially inputs high levels to multiple first lead wires 211 and low levels to the first lead wires 211 that do not receive high levels. Subsequently, the sampling circuit determines whether there are any lead wires with reduced resistance in the circuit of multiple second lead wires 221. If so, it is determined that compression occurred at the location of the first lead wire 211 that received the high level input and the second lead wire 221 where the reduction in resistance was detected. If not, it is determined that there is no compression at the location corresponding to the first lead wire 211 that received the high level input. The above detection process is repeated until detection is completed by sequentially inputting high levels to all first lead wires 211. After performing detection by sequentially inputting high levels to all first lead wires 211, one detection cycle is completed. After the completion of one detection cycle, the detection module outputs information on the compression location. Then, the next detection cycle begins, and by repeating this process, it becomes possible to provide real-time monitoring results for compression locations when using the smart mat.

[0046] As shown in Figure 12, the detection module sequentially inputs high levels to multiple first lead wires 211 and low levels to the first lead wires 211 that do not receive high levels. In this case, since point (L2, R1) is connected to the low level, the level of the R1 row is also low, and it is determined that it is not under pressure.

[0047] In one embodiment, as shown in Figure 13, the detection module includes a plurality of acquisition end circuits connected in one-to-one correspondence with a plurality of second lead wires 221. The acquisition end circuit includes a first selector switch 240. The first selector switch 240 includes a fixed terminal, a first connection terminal, and a second connection terminal, the fixed terminal being connected to the second lead wire 221, the first connection terminal being connected to the sampling circuit, and the second connection terminal being grounded. The first selector switch 240 can control the fixed terminal to make it conductive with either the first connection terminal or the second connection terminal. Within one detection cycle, the conductivity between the fixed terminal and the first connection terminal causes the sampling circuit to communicate with the second lead wire 221, enabling sampling of the second lead wire 221. The conductivity between the fixed terminal and the second connection terminal causes the second lead wire 221 to conduct to ground, discharging residual charge in the circuit and allowing it to wait for the next sampling cycle.

[0048] As shown in Figure 13, the collection end circuit further includes a sampling-hold capacitor C. The sampling-hold capacitor C has a first electrode connected to a second lead wire 221 and a fixed terminal, with the second electrode grounded. The sampling-hold capacitor C provides voltage stabilization, stabilizing the pressure on the lead wire to the target voltage during detection and improving the accuracy of the detection results. Furthermore, conduction between the fixed terminal and the second connection terminal forms a discharge circuit, which allows the sampling-hold capacitor C to discharge and wait for the next sampling cycle. The discharge time can be set according to the size of the holding capacitance and parasitic capacitance.

[0049] As shown in Figure 13, the acquisition end circuit further includes a sampling resistor R0. The sampling resistor R0 has a first terminal connected to the second lead wire 221 and a fixed terminal, and the second terminal is grounded. By setting the sampling resistor R0, the sampling circuit can acquire the voltage across the sampling resistor R0 when performing sampling, and determine the change in resistance between the first lead wire 211 and the second lead wire 221 from the change in the voltage of the sampling resistor R0. This allows for the determination of whether the positions corresponding to the first lead wire 211 and the second lead wire 221, which are the targets for detection, are being compressed.

[0050] In one embodiment, as shown in Figure 14, the detection module further includes a plurality of second selector switches 250. The plurality of second selector switches 250 are connected in one-to-one correspondence with a plurality of first lead wires 211. The second selector switches 250 include a fixed terminal, a first connection terminal and a second connection terminal, the fixed terminal being connected to a second lead wire 221, the first connection terminal being connected to a drive circuit, and the second connection terminal being grounded.

[0051] Within one detection cycle, when the detection module sequentially inputs a high level to multiple first lead wires 211, the fixed terminal of the second selector switch 250 connected to one of the first lead wires 211 communicates with the first connection terminal, thereby inputting a high level (VCC) to that first lead wire 211, and the fixed terminal of the second selector switch 250 connected to another first lead wire 211 communicates with the second connection terminal, thereby inputting a low level to the other first lead wires 211. By individually and sequentially controlling the second selector switches 250 connected to multiple lead wires, a high level is sequentially input to multiple first lead wires 211 to perform detection.

[0052] In one embodiment, the smart mat further includes a communication module. The communication module is connected to a detection module and transmits the detection data acquired by the detection module to a target terminal.

[0053] Specifically, after quantifying the data collected by the detection circuit, the system communicates wirelessly or wired with a mobile phone or other electronic terminal to provide feedback to the user regarding the foot placement information. The communication method may be a wireless means such as Bluetooth®, Wi-Fi, or 2.4G, or a wired means such as Ethernet or USB, and this disclosure is not limited thereto.

[0054] In one embodiment, as shown in Figures 1 and 2, the smart mat further includes a housing 500. The housing 500 is formed by engaging a first housing 510 and a second housing 520. The engagement of the first housing 510 and the second housing 520 forms a housing space. The housing 500 protects the flexible circuit board wire clip 400 housed in the housing space.

[0055] Within the housing 500, a battery 700 is further installed. The battery 700 supplies power to the flexible circuit board wire clip 400, thereby powering the entire detection circuit 300. The battery 700 is a removable rechargeable battery 700, making replacement and charging easy. The battery 700 may also be a non-removable rechargeable battery 700, which is charged via a charging interface.

[0056] The housing 500 is provided with a viewing window, and the flexible circuit board wire clip 400 is provided with an indicator light, allowing observation of the indicator light's light signal through the viewing window. To observe the indicator light's light signal, a light shield 600 is detachably or openably positioned in the viewing window. The light shield 600 prevents the indicator light's light signal from affecting the user's vision due to prolonged illumination. The light signals include, but are not limited to, the battery level signal of the 700 and the normal operation signal of the circuit board.

[0057] Embodiments of this disclosure further provide a method for multi-point detection of a smart mat. The method for multi-point detection of a smart mat is: Step 100 provides the smart mat according to the above embodiment, Step 200 involves the detection module acquiring a reference electrical signal of a detection point formed between a plurality of first lead wires and a plurality of the second lead wires while the smart mat is not being compressed. Step 310 involves inputting a detection signal to one of the multiple first lead wires by the detection module within one detection cycle, The detection module includes step 320, which determines which of a plurality of second leads has a change in electrical signal between it and the first lead to which the detection signal has been input.

[0058] The next detection cycle begins, and the steps of the previous detection cycle (steps S310 and S320) are repeated until the detection is completed by sequentially inputting the detection signal to all first lead wires.

[0059] Specifically, the smart mat includes a first surface layer 110, a second surface layer 120, a pressure change sensing layer 200, and a detection module. The first surface layer 110 is installed opposite the second surface layer 120. The pressure change sensing layer 200 is located between the first surface layer 110 and the second surface layer 120 and includes a first electrode layer 210, a conductive layer 230, and a second electrode layer 220, which are sequentially laminated. The first electrode layer 210 includes a plurality of first lead wires 211 that extend in a first direction X and are installed at intervals, and the second electrode layer 220 includes a plurality of second lead wires 221 that extend in a second direction Y intersecting the first direction X and are installed at intervals. The conductive layer 230 includes a plurality of conductive strips 231 that extend in a first direction X and are installed at intervals, with each conductive strip 231 corresponding one-to-one with a plurality of first lead wires 211. The detection module is connected to the plurality of first lead wires 211 and the plurality of second lead wires 221, respectively. Further details regarding the smart mat can be found in the details of the smart mat embodiment described above and are omitted here.

[0060] Specifically, in step S200, the uncompressed state of each position of the fitness mat is maintained before detection. Then, the detection circuit acquires electrical signals from multiple detection points formed between multiple first lead wires 211 and multiple second lead wires 221, and the acquired electrical signals from each detection point between the multiple first lead wires 211 and multiple second lead wires 221 are referenced as reference electrical signals. Of these, the electrical signals are at least one of resistance, voltage, and current.

[0061] Specifically, in step S310, the detection module inputs a detection signal to one of the multiple first lead wires 211, and inputs a low level to the first lead wires 211 other than the one to which a high level was input.

[0062] As shown in Figure 14, the detection module further includes a plurality of second selector switches 250. The plurality of second selector switches 250 are connected in one-to-one correspondence with a plurality of first lead wires 211. The second selector switch 250 includes a fixed terminal, a first connection terminal, and a second connection terminal, the fixed terminal being connected to the second lead wire 221, the first connection terminal being connected to the drive circuit, and the second connection terminal being grounded. During one detection cycle, when the detection module sequentially inputs a high level to the plurality of first lead wires 211, the fixed terminal of the second selector switch 250 connected to one of the first lead wires 211 communicates with the first connection terminal, thereby inputting a high level (VCC) to that first lead wire 211, and the fixed terminal of the second selector switch 250 connected to another first lead wire 211 communicates with the second connection terminal, thereby inputting a low level to the other first lead wire 211. By sequentially controlling the second selection switch 250, which is connected to multiple lead wires, a high level is sequentially input to multiple first lead wires 211 to perform detection.

[0063] Specifically, in step S320, the detection circuit 300 of the detection module samples from multiple second lead wires 221 to determine which second lead wires 221 have changed electrical signals between the first lead wire 211, which has a high level input, and the multiple second lead wires 221, and outputs position information of the second lead wires 221 whose electrical signals have changed relative to the first lead wire 211, which has a high level input.

[0064] In determining whether a change has occurred in the acquired electrical signal, the acquired electrical signal at the point is compared with a reference value of the previously acquired electrical signal at the point in an uncompressed state. For example, if the amount of change exceeds 5% of the reference value, it is determined that the point is compressed, and information indicating that the detected point is compressed is output. Of course, it is also possible to determine that the point is compressed when the amount of change exceeds 1%, 2%, 3%, 4%, 6%, 10%, etc., of the reference value, and this disclosure does not limit this.

[0065] As shown in Figure 13, the detection module includes multiple acquisition end circuits connected in one-to-one correspondence to multiple second lead wires 221. Each acquisition end circuit includes a first selector switch 240. The first selector switch 240 includes a fixed terminal, a first connection terminal, and a second connection terminal, the fixed terminal being connected to the second lead wire 221, the first connection terminal being connected to the sampling circuit, and the second connection terminal being grounded. The first selector switch 240 can control the fixed terminal to make it conductive to either the first connection terminal or the second connection terminal. Within one detection cycle, conductivity between the fixed terminal and the first connection terminal allows the sampling circuit to communicate with the second lead wire 221, enabling sampling of the second lead wire 221. Conduction between the fixed terminal and the second connection terminal allows the second lead wire 221 to conduct to ground, discharging residual charge from the circuit and allowing it to wait for the next sampling cycle.

[0066] In one embodiment, as shown in Figure 13, the acquisition end circuit further includes a sampling-hold capacitor C. The sampling-hold capacitor C has a first electrode connected to a second lead wire 221 and a fixed terminal, and the second electrode is grounded. The sampling-hold capacitor C provides a voltage stabilization effect, stabilizing the pressure on the lead wire to the target voltage during detection, thereby improving the accuracy of the detection result. Furthermore, a discharge circuit is formed by the conduction between the fixed terminal and the second connection terminal. Within one detection cycle, first, the fixed terminal of the first selection switch and the second connection terminal are made conductive, and the sampling-hold capacitor C is discharged for a predetermined time, the predetermined time can be set according to the size of the hold capacitance and parasitic capacitance. After the sampling-hold capacitor C is discharged, a high level is input to one of the multiple first lead wires 211, and a low level is input to the other first lead wires 211.

[0067] As shown in Figure 13, the acquisition end circuit further includes a sampling resistor R0. The sampling resistor R0 has a first terminal connected to the second lead wire 221 and a fixed terminal, and the second terminal is grounded. By installing the sampling resistor R0, the sampling circuit can acquire the voltage across the sampling resistor R0 when performing sampling, determine the change in resistance between the first lead wire 211 and the second lead wire 221 from the change in the voltage across the sampling resistor R0, and thereby determine whether the positions corresponding to the detected first lead wire 211 and second lead wire 221 are being compressed or not.

[0068] The smart mat provided in this disclosure can be used as a fitness yoga mat, dance mat, etc. To help determine the suitability of the operation standard when a user uses the smart fitness mat, it is possible to determine the pressure point of the smart fitness mat and compare the determined pressure point with a reference position, thereby assisting in determining the accuracy of the current position.

[0069] The smart mat provided in this disclosure can also be used as a mattress. When a user rests or sleeps on the mattress, the smart mat determines the pressure points, and by analyzing these determined pressure points, it is possible to understand the user's sleep patterns.

[0070] Those skilled in the art will readily conceive of other embodiments of the disclosure by practicing the inventions disclosed in this specification and herein. This application is intended to encompass all variations, uses, or adaptive changes of the disclosure, including common sense or conventional art means of the art not disclosed herein, in accordance with the general principles of the disclosure. The specification and examples are for illustrative purposes only, and the true scope and spirit of the disclosure shall be governed by the following claims.

[0071] This disclosure is not limited to the above description and illustrated structures, and it should be understood that various modifications and changes are possible without departing from its scope. The scope of this disclosure is limited only by the appended claims. [Explanation of symbols]

[0072] 110 First surface layer 120 Second surface layer 200 Pressure change sensing layer 210 First electrode layer 211 First lead wire 220 Second electrode layer 221 Second lead wire 230 Conductive layer 231 Conductive strip 240 First selection switch 250 Second selection switch 300 detection circuit 400 Flexible Circuit Board Wire Clips 500 Housing 510 First Housing 520 Second Housing 600 light-blocking plate 700 batteries

Claims

1. It's a smart mat, A first surface layer and a second surface layer are installed opposite each other, A pressure change sensing layer comprising a first electrode layer, a conductive layer, and a second electrode layer located between the first surface layer and the second surface layer and sequentially laminated, wherein the first electrode layer includes a plurality of first lead wires extending in a first direction and installed at intervals, the second electrode layer includes a plurality of second lead wires extending in a second direction intersecting the first direction and installed at intervals, and the conductive layer includes a plurality of conductive strips extending in a first direction and installed at intervals, wherein the plurality of conductive strips are installed in one-to-one correspondence with the plurality of first lead wires. A smart mat includes a detection module connected to a plurality of first lead wires and a plurality of second lead wires, respectively, which sequentially inputs a detection signal to the plurality of first lead wires and acquires the electrical signals of the plurality of second lead wires, thereby outputting position signals of the first lead wires and second lead wires whose electrical signals have changed.

2. The detection module sequentially inputs the detection signal to a plurality of first leads, The smart mat according to claim 1, wherein within one detection cycle, the detection module sequentially inputs a high level to a plurality of the first lead wires, and inputs a low level to the first lead wires other than those to which a high level has been input.

3. The smart mat according to claim 1, wherein the detection module includes a plurality of acquisition terminal circuits connected in one-to-one correspondence with a plurality of second lead wires, the acquisition terminal circuits include a first selector switch, the first selector switch includes a fixed terminal, a first connection terminal and a second connection terminal, the fixed terminal is connected to the second lead wire, the first connection terminal is connected to a sampling circuit and the second connection terminal is grounded.

4. The smart mat according to claim 3, wherein the acquisition end circuit further includes a sampling-hold capacitor, the first electrode of the sampling-hold capacitor being connected to the second lead wire and the fixed terminal, and the second electrode of the sampling-hold capacitor being grounded.

5. The smart mat according to claim 3, wherein the acquisition end circuit further includes a sampling resistor, the first terminal of the sampling resistor being connected to the second lead wire and the fixed terminal, and the second terminal of the sampling resistor being grounded.

6. The smart mat according to claim 1, wherein the detection module further includes a plurality of second selector switches connected in one-to-one correspondence to a plurality of first lead wires, the second selector switches including a fixed terminal, a first connection terminal and a second connection terminal, the fixed terminal being connected to the first lead wire, the first connection terminal being connected to a drive circuit and the second connection terminal being grounded.

7. The smart mat according to claim 1, further comprising a communication module connected to the detection module and transmitting detection data acquired by the detection module to a target terminal.

8. The smart mat according to claim 1, wherein the length of the first lead wire in the first direction is greater than the length of the second lead wire in the second direction.

9. The smart mat according to claim 1, wherein the number of conductive strips is the same as the number of first lead wires.

10. The smart mat according to claim 1, wherein the conductive layer is a conductive carbon film, and a plurality of conductive carbon strips formed by dividing the conductive carbon film function as a plurality of conductive strips.

11. A method for detecting multiple points on a smart mat, The invention provides a smart mat, wherein the smart mat comprises a first surface layer, a second surface layer, a pressure change sensing layer, and a detection module, wherein the first surface layer and the second surface layer are installed facing each other, the pressure change sensing layer is located between the first surface layer and the second surface layer and comprises sequentially laminated first electrode layers, a conductive layer, and a second electrode layer, wherein the first electrode layer comprises a plurality of first lead wires extending in a first direction and installed at intervals, the second electrode layer comprises a plurality of second lead wires extending in a second direction intersecting the first direction and installed at intervals, the conductive layer comprises a plurality of conductive strips extending in a first direction and installed at intervals, the plurality of conductive strips are installed in one-to-one correspondence with the plurality of first lead wires, and the detection module is connected to the plurality of first lead wires and the plurality of second lead wires, respectively. The detection module acquires reference electrical signals from multiple detection points formed between multiple first lead wires and multiple second lead wires while the smart mat is not compressed. Within one detection cycle, the detection module inputs a detection signal to one of the multiple first lead wires, acquires the second lead wire from the multiple second lead wires whose electrical signal has changed between it and the first lead wire to which the detection signal was input, and determines that the electrical signal has changed if the difference between the electrical signal at the detection point formed between the multiple second lead wires and the first lead wire to which the detection signal was input and the corresponding reference electrical signal is greater than a preset value. A multi-point detection method for a smart mat, comprising: entering the next detection cycle and repeating the steps of the previous detection cycle until detection is completed by sequentially inputting detection signals to all first lead wires.

12. The multi-point detection method according to claim 11, wherein within one detection cycle, the detection module is discharged for a predetermined time, and a high level is input to one of the multiple first lead wires that is the target first lead wire.

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