Sensing device and detection method thereof, and foot motion capture device

Abstract

The present application relates to a sensing device and a detection method thereof, and a foot motion capture device, wherein the sensing device comprises: a capacitor panel structure having a panel layer, which is used to generate electric charge when rubbed with the user's foot, and to generate charge flow when the panel layer is stepped on by the user; wherein the panel layer is marked with multiple key areas; a capacitive super-sensing detection circuit, connected to multiple electrodes of the capacitor panel structure, and used to detect a first current signal generated by the charge flow at each electrode position; a processor, connected to the capacitive super-sensing detection circuit, and used to receive the first current signal detected by the capacitive super-sensing detection circuit at each position point, calculate the position information of the contact point between the user's foot and the panel layer according to the first current signal, and locate the stepped key area of ​​the panel layer according to the position information and the position range corresponding to each key area; this technical solution realizes the super-sensing sensing function, improves the detection sensitivity of the foot motion capture device, and enhances the user application experience.

Description

Technical Field

[0001] The present application relates to the technical field of entertainment and sports equipment, and in particular to a sensing device and a detection method thereof, and a foot motion capture device. Background Art

[0002] Among the entertainment devices currently on the market, dance machines require footstep motion capture devices to detect stepping movements. This type of equipment includes dance mats, dance pedals, etc. Currently, commonly used footstep motion capture devices generally use pressure detection to detect the stepped key signals. When the panel is stepped on, the pressure change is used to generate deformation, and then the electrical signal is detected by the circuit to determine which key is effectively stepped on.

[0003] The above-mentioned detection method of deformation generated by pressure changes requires the user to use appropriate force to be detected. For many users, it is difficult to control the force while dancing, so missed detection and false detection are prone to occur, and the detection sensitivity is low, which affects the detection effect of the footstep motion capture device. Summary of the Invention

[0004] In order to solve at least one of the above technical problems, the present application provides a sensing device and a detection method thereof, and a foot motion capture device to realize super-sensing function and improve detection sensitivity.

[0005] A sensing device, used in a dance machine footstep motion capture device, comprising:

[0006] A capacitor panel structure having a panel layer configured to generate charge when rubbed against a user's foot and to generate charge flow when the panel layer is stepped on by the user; wherein the panel layer is marked with a plurality of key areas;

[0007] a capacitance super-sensing detection circuit, connected to the plurality of electrodes of the capacitor panel structure, for detecting a first current signal generated by the charge flow at each electrode position;

[0008] The processor is connected to the capacitive super-sensing detection circuit, and is used to receive the first current signal detected by the capacitive super-sensing detection circuit at each position point, calculate the position information of the contact point between the user's foot and the panel layer based on the first current signal, and locate the stepped key area of ​​the panel layer based on the position information and the position range corresponding to each key area.

[0009] In one embodiment, the capacitor panel structure includes: a panel layer, an isolation layer, and a metal layer stacked and bonded from top to bottom;

[0010] The panel layer, the isolation layer and the metal layer constitute a capacitor device.

[0011] In one embodiment, the sensing device further comprises: a pressure sensor disposed between the isolation layer and the metal layer, configured to generate a resistance change according to the pressure when the panel layer is stepped on, and output a second current signal to the processor via a connected controller;

[0012] The processor calculates the pressure value of the panel layer being stepped on according to the second current signal.

[0013] In one embodiment, the sensing device further includes: a power management circuit and a power voltage stabilization circuit; wherein the processor is connected to the power supply through the power voltage stabilization circuit and the power management circuit in sequence.

[0014] In one embodiment, the metal layer is made of adhesive-backed aluminum foil, the isolation layer is made of TPE elastic material, and the panel layer is made of PC organic material board.

[0015] A detection method for a sensing device, applied to a processor of the aforementioned sensing device, comprises:

[0016] The coordinate range corresponding to each key area of ​​the panel layer identification of the preset capacitor panel structure;

[0017] Receiving a first current signal detected by the capacitive super-sensing detection circuit; wherein the first current signal includes the magnitude of the current detected by each electrode;

[0018] The coordinate parameters of the contact point between the user's foot and the panel layer are calculated based on the current magnitude ratio of the first current signal, and the stepped key area of ​​the panel layer is located based on the position range corresponding to the key area where the coordinate parameters fall.

[0019] In one embodiment, after receiving the first current signal detected by the capacitive super-sensor detection circuit, the method further includes:

[0020] It is determined whether the current magnitude of the first current signal is within a preset range; if so, the first current signal is determined to be a valid current signal.

[0021] In one embodiment, the detection method of the sensing device further includes:

[0022] The controller receives a second current signal from a pressure sensor corresponding to each key area detected by the controller, and calculates a pressure value of the key area being stepped on according to the magnitude of the second current signal.

[0023] A foot motion capture device includes the above-mentioned sensing device.

[0024] In one embodiment, the foot motion capture device further comprises: a base material layer disposed below the metal layer, and a footstep motion capture device bottom portion made of an elastic material disposed below the base material layer;

[0025] The panel layer, the isolation layer, the metal layer, the base material layer and the bottom of the footstep motion capture device are stacked and bonded in sequence from top to bottom.

[0026] The above-mentioned sensing device and its detection method, as well as the foot motion capture device, generate electric charges through the panel layer of the capacitor panel structure when it rubs against the user's feet. When the panel layer is stepped on by the user, charge flow is generated. The capacitor super-sensing detection circuit detects the first current signal generated by the charge flow at each electrode position. The processor calculates the position information of the contact point between the user's foot and the panel layer based on the first current signal, and locates the stepped key area of ​​the panel layer in combination with the position range corresponding to each key area. This technical solution realizes the super-sensing function, improves the detection sensitivity of the foot motion capture device, and enhances the user application experience.

[0027] In addition, a pressure sensor is also provided in the capacitor panel structure. The second current signal detected by the controller is used when the resistance value changes due to pressure when the panel layer is stepped on. The pressure value of the panel layer being stepped on is calculated by the processor. At the same time, super-sensing and pressure sensing functions are realized, thereby improving the use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0029] Figure 1 is a schematic structural diagram of a sensing device according to an embodiment;

[0030] Figure 2 is an exploded diagram of the structure of a footstep motion capture device according to an embodiment;

[0031] Figure 3 is a cross-sectional schematic diagram of a footstep motion capture device structure according to an embodiment;

[0032] Figure 4 This is a sample diagram of the panel layer of a footstep motion capture device;

[0033] Figure 5 is a schematic diagram of the pressure sensor structure;

[0034] Figure 6 It is a schematic diagram of the principle of the induction device;

[0035] Figure 7 This is a schematic diagram of the circuit structure of the footstep motion capture device;

[0036] Figure 8 The present invention is a flow chart of a detection method of a sensing device according to an embodiment. DETAILED DESCRIPTION

[0037] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and are not to be construed as limiting the present application.

[0038] Those skilled in the art will understand that, unless otherwise stated, the singular forms "a," "an," "the," and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of this application refers to the presence of the stated features, integers, steps, and operations, but does not preclude the presence or addition of one or more other features, integers, steps, and operations.

[0039] This application provides a sensing device for use in a dance machine footstep motion capture device; Figure 1 As shown, Figure 1 The present invention is a schematic structural diagram of a sensing device according to an embodiment, comprising: a capacitor panel structure, a capacitance super-sensing detection circuit, and a processor; wherein:

[0040] A panel layer 11 is provided on the capacitor panel structure 10. Multiple key areas are marked on the panel layer 11. Each key area also has an arrow and a light to indicate which key position the user has stepped on. The panel layer 11 generates electric charge when it rubs against the user's feet. When the panel layer 11 is stepped on by the user, the user's feet contact the panel layer, which generates electric charge flow, thereby forming a current signal.

[0041] A plurality of electrodes 11 a are provided on the panel layer 11 , each electrode 11 a is connected to a capacitance super-sensing detection circuit 31 , and the capacitance super-sensing detection circuit 31 detects a first current signal generated by the flow of charges at the position of each electrode 11 a .

[0042] The capacitive super-sensing detection circuit 31 is connected to the processor 32, which receives the first current signal detected by the capacitive super-sensing detection circuit 31 at each electrode 11a, calculates the position information of the contact point between the user's foot and the panel layer 11 based on the first current signal, and then locates the stepped key area of ​​the panel layer 11 based on the position information and the position range corresponding to each key area.

[0043] refer to Figure 2 and 3 As shown, Figure 2 is an exploded diagram of the structure of a footstep motion capture device according to an embodiment. Figure 3It is a cross-sectional schematic diagram of the structure of a footstep motion capture device according to an embodiment; the capacitor panel structure 10 includes a panel layer 11, an isolation layer 12 and a metal layer 13 stacked and bonded from top to bottom, and the metal layer 13 is arranged on the base material layer 21 of the footstep motion capture device; each electrode 11a on the panel layer 11 is connected to a capacitive super-sensing detection circuit 31, and the capacitive super-sensing detection circuit 31 is connected to a processor 32; wherein, the panel layer 11, the isolation layer 12 and the metal layer 13 constitute a capacitor device.

[0044] Preferably, the panel layer 11 can be made of a PC (Polycarbonate) organic material board, and the isolation layer 12 can be made of a TPE (Thermoplastic Elastomer) elastic material layer, which plays an isolation and buffering role through the elastic material; at the same time, a footstep motion capture device bottom 22 made of elastic material can also be set at the lower part of the base material layer 21 to play a buffering role when the footstep motion capture device is stepped on; the metal layer 13 can be made of adhesive-backed aluminum foil.

[0045] For the footstep motion capture device structure, multiple key areas are marked on the panel layer 11, refer to Figure 4 As shown, Figure 4 This is a schematic diagram of the panel layer of an example footstep motion capture device. The figure takes a five-key footstep motion capture device as an example. The footstep motion capture device is provided with five key areas, including the upper left key area, the lower left key area, the upper right key area, the lower right key area and the middle key area; each key area is provided with an arrow mark; it should be noted that the number of key areas of the footstep motion capture device can be designed according to actual needs. For example, it can also be designed into seven keys and nine keys, etc., which will not be given examples one by one here. In addition, in the structural design of the footstep motion capture device, borders, arc corner guards, etc. can also be designed. The footstep motion capture device can be designed as a whole in appearance, and the product appearance is more beautiful.

[0046] In the sensing device of this embodiment, when the user dances on the panel layer 11, the panel layer 11 generates a large amount of charge under friction and is distributed on the panel layer 11. The panel layer 11, the isolation layer 12 and the metal aluminum foil form a flat capacitor. The user is equivalent to a conductor. When the user's foot touches the surface of the panel layer 11, charge flow will occur on the panel layer 11, thereby generating a charging and discharging process. The charge on the panel layer 11 generates charge flow. In order to detect the position of the contact point, electrodes 11a can be set at multiple positions (generally four corners) on the panel layer 11 to detect the current value. The flow of charge generates current signals of different sizes on each electrode 11a, which is defined as the first current signal. The capacitive super-sensing detection circuit 31 detects the first current signal of the current change and sends the detected first current signal to the processor 32 respectively. The processor 32 calculates the coordinate position of the contact point between the foot and the panel layer 11 on the panel plane. Combined with the coordinate range of each key area, the key area of ​​the foot motion capture device that is stepped on can be located, thereby improving the detection sensitivity of the foot motion capture device and enhancing the user application experience.

[0047] In one embodiment, Figure 2-3 A pressure sensor 23 is provided between the isolation layer 12 and the metal layer 13. The pressure sensor 23 includes a plurality of sensing modules. Figure 4 As an example of the five-key area footstep motion capture device shown in FIG, the structure of the pressure sensor 23 is as follows: Figure 5 As shown, Figure 5 It is a schematic diagram of the pressure sensor structure, including four side key sensing modules: an upper left key sensing module 23a, a lower left key sensing module 23b, an upper right key sensing module 23c, and a lower right key sensing module 23d, and one middle key sensing module 23e, corresponding to the five key areas of the upper left key area, lower left key area, upper right key area, lower right key area and middle key area of ​​the footstep motion capture device; each sensing module is connected to the controller 24 through a cable, and the controller 24 is connected to the processor 32; for the structure of the pressure sensor 23, it may include a pressure-sensitive silver paste layer, an isolation sheet, and a bottom conductive carbon paste layer stacked from top to bottom, and the metal layer 13 adopts adhesive-backed aluminum foil, which can provide effective insulation for the pressure sensor 23 when forming a flat capacitor; the pressure sensor 23 adopts a distributed resistance design, and the resistance is linearly distributed in each sensing module; during use, when the user steps on the panel layer 11 of the footstep motion capture device, the pressure applied causes the pressure sensor 23 to produce a resistance change, and the controller 24 detects the second current signal flowing through the pressure sensor 23 and outputs it to the processor 32 to calculate the pressure value.

[0048] The above technical solution combines super-sensing and pressure-sensing functions, refer to Figure 6 As shown, Figure 6It is a schematic diagram of the principle of the sensing device. When the user's foot contacts the panel layer 11, the processor 32 can quickly locate the key area of ​​the user's footstep motion capture device through the first current signal. Thereafter, when the user continues to step on the footstep motion capture device with force, the processor 32 can calculate the pressure value applied during the stepping process through the second current signal; thereby, the footstep motion capture device has both supersensory sensing and pressure sensing functions, thereby improving the use effect of the footstep motion capture device.

[0049] refer to Figure 7 As shown, Figure 7 This is a schematic diagram of the circuit structure of a footstep motion capture device. As shown in the figure, the processor 32 is the control processing center. The capacitive super-sensing detection circuit 31 and the pressure sensor 23 are respectively connected to the processor 32. The processor 32 is connected to the power supply through the power supply voltage stabilization circuit 33 and the power supply management circuit 34. During operation, the first current signal detected by the capacitive super-sensing detection circuit 31 is sent to the processor 32, which calculates and locates the stepped key area to achieve super-sensing sensing; the second current signal detected by the pressure sensor 23 is sent to the processor 32, which uses it to calculate the pressure value of the footstep motion capture device being stepped on; the power supply voltage stabilization circuit 33 can play a voltage stabilization role, and the power supply management circuit 34 can play a power management role; the power supply can be powered by a 4.2V lithium battery.

[0050] An embodiment of the detection method of the sensing device of the present application is described below.

[0051] The detection method of the sensing device of the present application is applied to the processor of the sensing device described in the above embodiment, with reference to Figure 8 As shown, Figure 8 1 is a flow chart of a detection method of a sensing device according to an embodiment, the method comprising:

[0052] S10, preset the coordinate range corresponding to each key area of ​​the panel layer identification of the capacitor panel structure.

[0053] Specifically, first determine the range of each key area to be marked on the panel layer of the capacitor panel structure, and then set the coordinate range of each key area using the panel layer plane as the coordinate system.

[0054] S20, receiving a first current signal detected by the capacitive super-sensing detection circuit; wherein the first current signal includes the current magnitude of each electrode.

[0055] Preferably, after detecting the first current signal, it is first determined whether the current magnitude of the first current signal is within a preset range. If so, the first current signal is determined to be a valid current signal; otherwise, the first current signal is discarded.

[0056] S30, calculating the coordinate parameters of the contact point between the user's foot and the panel layer according to the current magnitude ratio of the first current signal, and locating the stepped key area of ​​the panel layer according to the position range corresponding to the key area where the coordinate parameters fall.

[0057] Specifically, after the user's footsteps contact the panel layer and current flows, during the process of current formation on the panel layer, different current values ​​are detected at multiple different positions on the panel layer, and the current is proportional to the detection position and the contact point position. Therefore, the coordinate position of the contact point is calculated by detecting the current size ratio of the first current signal of the current change, and combined with the position range corresponding to the key area for judgment, it is possible to locate which key area is stepped on.

[0058] S40, receiving the second current signal of the pressure sensor corresponding to each key area detected by the controller, and calculating the pressure value of the key area being stepped on according to the magnitude of the second current signal.

[0059] The above-mentioned sensing device and detection method thereof first establish a plane coordinate system, preset the coordinate range corresponding to each key area marked by the panel layer of the capacitor panel structure, and then during use, receive the first current signal detected by the capacitor super-sensing detection circuit in real time. The processor calculates the coordinate parameters of the contact point between the user's foot and the panel layer according to the current magnitude ratio of the first current signal, thereby determining the position range corresponding to the key area in which the coordinate parameters fall, locating the key area of ​​the panel layer that is stepped on, realizing the super-sensing sensing function, and further using the pressure sensor to generate a resistance change. The controller detects and outputs the second current signal and the processor calculates the pressure value of the panel layer that is stepped on. The above-mentioned technical solution simultaneously realizes the super-sensing and pressure sensing functions, improves the detection sensitivity of the footstep motion capture device, improves the use effect of the device, and enhances the user application experience.

[0060] The above are only some of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A sensing device, applied to a dance machine footstep motion capture device, characterized in that: include: A capacitor panel structure includes a panel layer configured to generate an electric charge when rubbed against a user's foot, and to generate a flow of electric charge when stepped on by the user; wherein the panel layer is marked with a plurality of key areas; the panel layer generates a large amount of electric charge when rubbed and is distributed on the panel layer; when the user's foot contacts the surface of the panel layer, electric charge flows on the panel layer, generating a charge-discharge process, and the electric charge on the panel layer generates a flow of electric charge to form a current signal; a capacitance super-sensing detection circuit, connected to the plurality of electrodes of the capacitor panel structure, for detecting a first current signal generated by the charge flow at each electrode position; The processor is connected to the capacitive super-sensing detection circuit, and is used to receive the first current signal detected by the capacitive super-sensing detection circuit at each position point, calculate the position information of the contact point between the user's foot and the panel layer based on the first current signal, and locate the stepped key area of ​​the panel layer based on the position information and the position range corresponding to each key area.

2. The sensing device according to claim 1, characterized in that The capacitor panel structure comprises: a panel layer, an isolation layer and a metal layer stacked and bonded from top to bottom; The panel layer, the isolation layer and the metal layer constitute a capacitor device.

3. The sensing device according to claim 1 or 2, characterized in that: Also includes: A pressure sensor disposed between the isolation layer and the metal layer, configured to generate a resistance change according to the pressure when the panel layer is stepped on, and output a second current signal to the processor via a connected controller; The processor calculates the pressure value of the panel layer being stepped on according to the second current signal.

4. The sensing device according to claim 2, characterized in that Also includes: A power management circuit and a power voltage stabilizing circuit; wherein the processor is connected to the power supply through the power voltage stabilizing circuit and the power management circuit in sequence.

5. The sensing device according to claim 2, characterized in that The metal layer is made of adhesive-backed aluminum foil, the isolation layer is made of TPE elastic material, and the panel layer is made of PC organic material board.

6. A detection method for a sensing device, characterized in that: The processor of the sensing device according to any one of claims 1 to 5 comprises: The coordinate range corresponding to each key area of ​​the panel layer identification of the preset capacitor panel structure; Receiving a first current signal detected by the capacitive super-sensing detection circuit; wherein the first current signal includes the magnitude of the current detected by each electrode; The coordinate parameters of the contact point between the user's foot and the panel layer are calculated based on the current magnitude ratio of the first current signal, and the stepped key area of ​​the panel layer is located based on the position range corresponding to the key area where the coordinate parameters fall.

7. The detection method of the sensing device according to claim 6, characterized in that: After receiving the first current signal detected by the capacitive super-sensing detection circuit, the method further includes: It is determined whether the current magnitude of the first current signal is within a preset range; if so, the first current signal is determined to be a valid current signal.

8. The detection method of the sensing device according to claim 6, characterized in that: Also includes: The controller receives a second current signal from a pressure sensor corresponding to each key area detected by the controller, and calculates a pressure value of the key area being stepped on according to the magnitude of the second current signal.

9. A foot motion capture device, characterized in that: include: The sensing device according to any one of claims 1 to 5.

10. The foot motion capture device according to claim 9, characterized in that: Also includes: A base material layer disposed below the metal layer, and a footstep motion capture device bottom portion made of elastic material disposed below the base material layer; Among them, the panel layer, the isolation layer, the metal layer, the base material layer and the bottom of the footstep motion capture device are stacked and bonded in sequence from top to bottom.

Images