Touch force sense glove for badminton training

Abstract

The invention discloses a touch force sense glove for badminton training, and relates to the field of kinematics. Wherein a plurality of groups of pressure sensors in the pressure sensor array are respectively arranged on the glove body corresponding to the finger force application points and the hand force application positions of the palm force application area; each group of pressure sensors is connected with a flexible flat cable interface through a flexible flat cable; the flexible flat cable interface is connected with the multiplexer; the signal conversion circuit is used for converting a pressure sensor signal collected by the multiplexer into a voltage signal and transmitting the voltage signal to the main control chip for processing to generate time sequence pressure data of each hand force exerting position; the main control chip transmits time sequence pressure data and three-axis acceleration and three-axis angular velocity data collected by the attitude sensor to an upper computer as hand force exerting data, all-directional and multi-angle hand force exerting data of a user in the ball serving process can be collected, and accurate data support is provided for guiding hand force exerting.

Description

Technical Field

[0001] The present application relates to the technical field of kinematics, and in particular to a tactile glove for badminton training. Background Art

[0002] Finger force plays a very important role in badminton, but learning and applying finger force skills is the most difficult to achieve. Many badminton learners only learn the basics by watching teaching videos, and are far from mastering the essence of coordinated force and short force. Many learners make mistakes in finger force, using wrist bending or forearm muscle compensation. The former is extremely prone to injury, while the latter will greatly reduce the quality of the serve. Even if the coach teaches face to face, the details of finger force are not easy to detect. Therefore, designing a tactile glove for badminton training and learning has certain practical value.

[0003] Through extensive reference to relevant information in the field of badminton, it is found that there is no relevant research based on touch to provide finger force guidance suggestions. Current research mainly relies on speed measuring components or cameras. The former measures the swing speed by placing the speed sensor at the bottom of the racket, but the real hit is the racket head hitting the ball, and different people hold the racket handle in different positions. The credibility of this method needs to be improved; the speed measuring component can also be placed in the bracelet to identify various modes such as lobs, lobs and smashes, but it cannot provide force improvement suggestions, and the recording significance is greater than the guidance significance. The latter relies on the camera to analyze the player's movements and compare professional athletes. This does have a greater guiding significance, but the role of fingers in the badminton force mode is extremely large, and the force distance is very short, which is not easy to capture by the camera. Therefore, there is still a gap in the current research on finger force. Summary of the invention

[0004] In response to the problems pointed out in the background technology, the purpose of this application is to provide a tactile glove for badminton training to collect the user's hand force data from all directions and angles during the serving process, and provide accurate data support for guiding hand force.

[0005] To achieve the above objectives, this application provides the following solutions.

[0006] The present application provides a tactile glove for badminton training, comprising: a glove body, and a pressure sensor array, a flexible flat cable and a main control board arranged on the glove body;

[0007] The pressure sensor array includes multiple groups of pressure sensors arranged in pieces; the multiple groups of pressure sensors are respectively arranged at the hand force positions corresponding to the finger force points and the palm force area on the glove body;

[0008] The main control board is arranged on the back of the glove body; a soft cable interface, a multiplexer, a signal conversion circuit, a main control chip, a posture sensor and a display screen are arranged on the main control board; each group of pressure sensors is connected to a soft cable interface through a group of soft cables; each soft cable interface is connected to a multiplexer; the output end of each multiplexer is connected to a signal conversion circuit; the output end of each signal conversion circuit is connected to the main control chip; the signal conversion circuit is used to convert the pressure sensor signal collected by the multiplexer into a voltage signal, and transmit it to the main control chip for AD conversion, filtering, Linearization and storage processing are performed to generate the time-series pressure data of each hand force position; the posture sensor and the display screen are both connected to the main control chip; the posture sensor is used to collect the three-axis acceleration and three-axis angular velocity data of the hand and send them to the main control chip; the main control chip is also connected to the host computer for communication, and is used to transmit the time-series pressure data, three-axis acceleration and three-axis angular velocity data of each hand force position as hand force data to the host computer; the host computer is used to analyze the hand force data and give guidance and suggestions; the display screen is used to display operation prompts, test status and hand force data.

[0009] Optionally, the pressure sensor array includes 7 groups of pressure sensors; each group of pressure sensors includes 8 pressure sensors, and each group of 2 pressure sensors constitutes 4 pressure sensor units.

[0010] Optionally, four pressure sensors are arranged on the side of the glove body that contacts the palm corresponding to the thumb area, two pressure sensors are arranged at the base of the thumb, and two more pressure sensors are arranged on the thumb side of the palm below the base of the thumb; four pressure sensor units are arranged on each of the remaining four fingers, which are respectively arranged on the three fingertips and the connecting parts between the fingers and the palm; two groups of pressure sensors are arranged on the outer edge of the palm corresponding to the palm area according to the grip posture.

[0011] Optionally, the pressure sensor array further includes 2 groups of spare pressure sensors.

[0012] Optionally, the multiplexer is an eight-to-one multiplexer.

[0013] Optionally, the pressure sensor is a resistive sensor; and the signal conversion circuit is a resistance-voltage conversion circuit.

[0014] Optionally, the flexible flat cable adopts a serpentine soft board; a plurality of sensor contact units are distributed on the serpentine soft board; and each pressure sensor is connected to the serpentine soft board via a sensor contact unit.

[0015] Optionally, the flexible cable interface adopts an FPC socket; the gold finger plug of the snake-shaped flexible board is connected to the FPC socket of the main control board.

[0016] Optionally, the main control chip integrates WIFI and Bluetooth modules; the main control chip communicates wirelessly with the host computer via the WIFI and Bluetooth modules and an external antenna.

[0017] Optionally, a USB module and a power supply module are also provided on the main control board; the USB module is connected to the host computer, the main control chip and the power supply module respectively; the USB module is used for wired communication with the host computer, program programming download and charging the power supply module.

[0018] According to the specific embodiments provided in this application, this application discloses the following technical effects.

[0019] In a tactile glove for badminton training provided by the present application, the pressure sensor array includes multiple groups of pressure sensors arranged in slices, and the multiple groups of pressure sensors cover all hand force positions corresponding to the finger force points and palm force areas on the glove body, and can collect the user's hand force data from all directions and angles during the serving process. The upper computer further analyzes the hand force data, which can provide accurate data support for guiding the hand force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a partial structural schematic diagram of a tactile glove for badminton training in this application;

[0022] Figure 2 A schematic diagram of the layout area of ​​the hand pressure sensor array;

[0023] Figure 3 This is a schematic diagram of the distribution of the pressure sensor array on the grip side of the hand;

[0024] Figure 4 This is a schematic diagram of the connection relationship between various components on the main control board;

[0025] Figure 5 This is a schematic diagram of the connection between the flexible flat cable and the pressure sensor;

[0026] Figure 6 This is the schematic diagram of the FPC socket circuit;

[0027] Figure 7 The schematic diagram of the eight-to-one multiplexer circuit is shown;

[0028] Figure 8 It is a schematic diagram of a resistance-voltage conversion circuit;

[0029] Fig. 9 This is a schematic diagram of the main control chip circuit;

[0030] Fig.10 This is the schematic diagram of the power supply module circuit;

[0031] Fig.11 This is the schematic diagram of the USB module circuit;

[0032] Fig.12 This is a schematic diagram of the attitude sensor circuit;

[0033] Fig.13 This is a schematic diagram of the display screen socket circuit. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] The purpose of this application is to propose a tactile glove for badminton training to collect the user's hand force data from all directions and angles during the serving process, and provide accurate data support for guiding hand force.

[0036] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] In an exemplary embodiment, the present application provides a tactile glove for badminton training (hereinafter referred to as a tactile glove), such as Figure 1 As shown, it includes: a glove body 1 and a pressure sensor array ( Figure 1 ), a flexible flat cable 2 and a main control board 3. The main control board 3 is arranged on the back of the glove body 1.

[0038] Among them, the pressure sensor array (also called tactile sensor array) includes multiple groups of pressure sensors or other types of tactile / force sensors arranged in pieces. Multiple groups of pressure sensors are respectively arranged on the glove body at the hand force positions corresponding to the finger force points and the palm force areas. Before starting the sensor layout design, first paint the racket handle red. The tester holds the racket and hits the ball. According to the redness of the palm, the finger force points during badminton are preliminarily divided. After that, according to the depth of the red stain on the hand, the main force area and the secondary force area are inferred, so that the pressure sensor array layout area is planned, such as Figure 2 The reticular area is shown.

[0039] In an exemplary embodiment, the pressure sensor array on the grip side of the hand is distributed as follows: Figure 3 As shown. Pressure sensor (referred to as sensor, such as Figure 3 The blue dots in the figure (as shown in the figure) are placed corresponding to the force positions of the hand, including the 5 fingers and the gripping position of the palm. Eight sensors are arranged in each finger area, two in a group (called pressure sensor units), distributed at the finger pulp and the junction of the finger and palm. For example, there are 4 sensors on the thumb, 2 sensors at the base of the thumb, and two more sensors are arranged on the thumb side of the palm below the base. Each of the remaining 4 fingers (index finger, middle finger, ring finger and little finger) is distributed with 4 groups of pressure sensor units, which are arranged at the three finger pulps and the connection between the fingers and the palm. The force-bearing parts on the palm are arranged mainly according to the gripping posture, such as Figure 3 Eight sensor nodes are allocated to each finger area and 16 sensor nodes are allocated to the palm to ensure the integrity and comprehensiveness of the sampled data.

[0040] That is to say, the pressure sensor array arranged on the glove body 1 includes at least 7 groups of pressure sensors. Each group of pressure sensors includes 8 pressure sensors, and each group of 2 pressure sensors constitutes 4 pressure sensor units. The 4 pressure sensor units in each group of pressure sensors are arranged in a straight line along the shape of fingers or palms, and together constitute a pressure sensor array.

[0041] Specifically, Figure 3 Corresponding to the hand force position shown, four pressure sensors are arranged on the side of the glove body 1 that contacts the palm corresponding to the thumb area, two pressure sensors are arranged at the base of the thumb, and two more pressure sensors are arranged on the thumb side of the palm below the base of the thumb; four pressure sensor units are arranged on each of the remaining four fingers, which are respectively arranged on the three fingertips and the connection between the fingers and the palm; two groups of pressure sensors are arranged on the outer edge of the palm corresponding to the palm area according to the grip posture.

[0042] The main control board 3 is provided with a flexible cable interface, a multiplexer, a signal conversion circuit, a main control chip, a posture sensor and a display screen, and the connection relationship thereof is as follows: Figure 4 As shown. Each group of pressure sensors is connected to a flexible cable interface through a group of flexible cables 2. Each flexible cable interface is connected to a multiplexer. The output end of each multiplexer is connected to a signal conversion circuit. The output end of each signal conversion circuit is connected to the main control chip. The signal conversion circuit is used to convert the pressure sensor signal collected by the multiplexer into a voltage signal, and transmit it to the main control chip for AD conversion, filtering, linearization and storage, etc., to generate the time series pressure data of each hand force position. The posture sensor and the display screen are both connected to the main control chip. The posture sensor is used to collect the three-axis acceleration and three-axis angular velocity data of the hand and send it to the main control chip. The main control chip is also connected to the host computer for communication, and is used to transmit the time series pressure data, three-axis acceleration and three-axis angular velocity data of each hand force position as hand force data to the host computer. The host computer is used to analyze the hand force data and give guidance suggestions. The display screen is used to display operation prompts, test status and hand force data. The display screen can use an OLED liquid crystal screen.

[0043] In an exemplary embodiment, the pressure sensor array further includes 2 groups of spare pressure sensors. 9 groups of sensors (8 points in each group) collect hand pressure when hitting the ball. Among them, 5 groups of sensors are distributed in 5 finger areas, 2 groups of sensors are distributed in the palm, and 2 groups are spare. Correspondingly, the multiplexer adopts an eight-to-one multiplexer. The pressure sensor adopts a resistive sensor; the signal conversion circuit is a resistance-voltage conversion circuit.

[0044] In an exemplary embodiment, Figure 5 As shown, the flexible flat cable 2 can be a flexible serpentine board that can be stretched and bent. A plurality of sensor contact units 201 are distributed on the serpentine board 2. Each pressure sensor unit 4 is connected to the serpentine board 2 via a sensor contact unit 201.

[0045] In an exemplary embodiment, the flexible cable interface may be an FPC socket. The gold finger plug 202 of the serpentine flexible board 2 is connected to the FPC socket of the main control board 3.

[0046] In an exemplary embodiment, referring to Figure 4, the main control chip has integrated WIFI and Bluetooth modules. The main control chip communicates wirelessly with the host computer via WIFI and Bluetooth modules and an external antenna. A USB module and a power supply module are also provided on the main control board. The USB module is connected to the host computer, the main control chip and the power supply module respectively. The USB module is used for wired communication with the host computer, program downloading and charging the power supply module. The power supply module is used to convert the 3.7V unstable voltage of the lithium battery into a 3.3V stable voltage used by the main control board components. The lithium battery can be sandwiched between the main control board and the display screen, fixed with double-sided tape, and connected to the main control board through leads to provide stable power supply to the main control board during operation. The display screen is connected to the main control board via an I2C bus.

[0047] When in use, the user wears the tactile gloves for badminton training of the present application. When hitting the ball, 9 groups of sensors (8 points in each group) collect the hand pressure when hitting the ball. Among them, 5 groups of sensors are distributed in 5 finger areas, 2 groups of sensors are distributed in the outer edge area of ​​the palm, and 2 groups are spare. The main control chip drives 9 groups of eight-to-one multiplexers to cyclically select 1 sensor in each group, and 9 sensor data can be collected at the same time. The pressure sensor signal is converted into a voltage signal that is proportional to the pressure success through a resistance-voltage conversion circuit. The main control chip performs AD conversion on the incoming voltage signal through the built-in AD, and then filters, linearizes and stores it to generate the corresponding time-series pressure data of each hand force position. On the other hand, the main control chip reads the three-axis acceleration and three-axis angular velocity data of the posture sensor, and transmits the collected time-series pressure data of each hand force position to the host computer by wireless communication or USB communication to analyze the hand force data.

[0048] The tactile glove for badminton training of the present application has a total of 72 resistive sensor access ports reserved, which are divided into 9 groups, each group of which is connected to 8 pressure sensors. Each finger corresponds to 1 group of 8 sensor access ports, and the palm corresponds to 2 groups of 16 sensor access ports, so a total of 7 groups of access ports are consumed, and the remaining 2 groups are reserved.

[0049] Each group of 8 sensor access ports (implemented by 1 FPC socket) is connected to 1 8-to-1 multiplexer, for a total of 9 multiplexers, 2 of which are spare. When the main control chip scans a multiplexer, it will control the selection end of the multiplexer to scan the 8 pressure sensor access ports in sequence to obtain real-time pressure data.

[0050] Each multiplexer output is connected to a resistor-voltage conversion circuit to convert the acquired pressure data into a voltage value and transmit it to the main control chip for AD conversion processing.

[0051] The posture sensor can use a 6-axis gyroscope, which is responsible for sensing the posture changes of the entire hand. It can measure the three-axis acceleration and three-axis angular velocity data during the swing, which is convenient for background kinematic analysis.

[0052] A wireless communication channel (implemented by the built-in WIFI and Bluetooth module of the main control chip and the external antenna) and a USB communication channel (implemented by the USB module) are set up on the main control board, which are responsible for transmitting the collected hand force data to the background (host computer) for data analysis and motion analysis.

[0053] The main control chip implements the following functions.

[0054] Function 1: Circularly scan 9 groups of 8-to-1 multiplexers, control the selected multiplexers to output the resistance values ​​of 8 pressure sensors in sequence, so that the pressure data of the pressure sensor array composed of 9*8, a total of 72 sensors, can be obtained. If a group of pressure sensors is not connected, an empty scan is performed. The data of a group of 8 sensors is not collected in parallel, but is cyclically scanned by an 8-to-1 multiplexer, and the scanning frequency is very high, up to 100Hz.

[0055] Function 2: Control the OLED LCD screen to display operation prompts, test status and some important data. For example, the operation prompts include the planned number of hits, the planned type of hits, the number of hits and the type of hits, etc. For example, if 10 balls are needed to collect data, the words "0 / 10" can be displayed on the display screen. The learner can also be prompted on the display screen what ball to hit (such as lobs, high balls, smashes), how many of the 10 balls have been hit, etc. In addition, the display screen can also dynamically display the hand force data. For example, a bar graph is used to display the pressure data of 56 sensors, the three-axis acceleration and three-axis angular velocity data, and the number of balls that have been effectively hit. In addition, through the preset threshold detection and logic algorithm, if a force triggers the three-dimensional angular velocity and three-dimensional acceleration at the same time, the words "test success" will be displayed.

[0056] Function 3: Read the three-axis acceleration and three-axis angular velocity data of the attitude sensor, perform motion analysis and trigger data collection. The tactile sensor collects pressure data for each test point. The attitude sensor collects the three-axis acceleration and three-axis angular velocity data of the hand, where the three-axis acceleration is the acceleration of the three axes of XYZ, and the three-axis angular velocity is the angular velocity of the three axes. An effective hitting action must have changes in pressure data and changes in hand posture. If there is only pressure data, it is impossible to determine whether a hitting action has occurred, such as holding the racket hard. If the three-axis acceleration and three-axis angular velocity can be triggered, then the logic is that if there is three-axis acceleration + three-axis angular velocity + tactile feedback, it is determined to be a hit. In the method of judging an effective hit, it is necessary to ensure that the values ​​of at least 5 pressure sensors exceed the critical value, and the acceleration of at least one axis in the three-axis acceleration data has changed significantly. The quality of a specific hit should be comprehensively judged based on the position of the force and the movement trajectory of the hand.

[0057] Function 4: wirelessly transmit the hand force data to the background, or first store the hand force data in the memory on the main control board, and use the USB interface to obtain the stored data.

[0058] Considering the differences in finger length and hand shape of each person, the pressure sensor array adopts a flexible and retractable design, and can be designed with adhesive backing, so that it can be easily fixed on the glove body 1 by gluing or other means. Other components are located on the main control board, which can be sewn on the back of the glove body. Both the sensor itself and the connection between the sensor and the main control board adopt flexible connections to ensure the comfort of the tested player and facilitate position adjustment according to the size of the tested person's palm.

[0059] The pressure sensor array adopts a sliced ​​design with 8 sensors as a group to meet the needs of easy replacement when the sensor is partially damaged due to strong finger force and frequent bending during the swing process. It can be discarded after use and replaced at any time. The 2 groups of spare 16 sensors are not connected to the main control board under normal circumstances. Only interfaces are reserved on the main control board for replacement when certain ports are damaged. When replacing, remove the corresponding soft cable of the sensor from the FPC socket and replace it. In addition, if a certain hand force position needs to collect more detailed hand movements and needs to increase the detection density, these 16 spare sensors can also be used. Each FPC socket can connect to 8 sensors, and any of the 9 FPC sockets can be spare, and they can be conveniently connected according to their distribution positions on the main control board.

[0060] After the hand force data is collected by the main control chip, it can be transmitted to the host computer in real time for processing by wireless communication. This method of wireless data transmission reduces the restrictions on the swinging action of badminton players and increases the validity of the data. At the same time, because it is real-time data transmission, data information can be obtained instantly and improvement suggestions can be put forward in time. Through continuous collection for a period of time, the time series pressure data of each hand force position can be obtained. Of course, the main control board also has a data storage function, which can export data uniformly after the exercise for analysis and processing by the host computer.

[0061] The tactile gloves of the present application are equipped with a small LCD screen, which can prompt the tester's usage process, display the current test status and some important data information, and better realize human-computer interaction.

[0062] The tactile gloves of the present application have a tactile sensor (pressure sensor) and a motion sensor (posture sensor), which realize dual-modal data collection of time-series pressure data and kinematic data (three-axis acceleration and three-axis angular velocity data) of each hand force position, and can better feedback the hand's motion trajectory and perform hand force analysis and kinematic analysis.

[0063] The tactile gloves of this application can be applied to badminton training and learning. Through a high-density tactile sensor array, the hand force data of badminton players in the process of serving are collected from all directions and angles. After the data is processed by a high-speed processing main control chip, it is transmitted to the host computer for analysis. On the basis of obtaining a large amount of hand force data of high-level athletes, the hand force model is summarized and compared with the force mode of badminton learners, and technical scoring grades and improvement suggestions are given.

[0064] The tactile gloves of the present application have high practical value for badminton learners. In badminton, the force of fingers is extremely delicate and difficult to observe and improve. If the hand force data can be collected through a high-density tactile sensor array and compared with the force pattern of high-level athletes, force teaching can be carried out finger by finger and side by side, which will greatly improve the level and efficiency of badminton teaching.

[0065] In an exemplary embodiment, 9 FPC socket circuits are as follows Figure 6 shown. Figure 6FPC1-9 are 9 FPC sockets, which are used to receive 9 groups of pressure sensor signals. Each FPC socket can connect 8 pressure sensor signals, totaling 72 signals, including 8 access signals of PS00-PS07 of FPC1, 8 access signals of PS10-PS17 of FPC2, 8 access signals of PS20-PS27 of FPC3, 8 access signals of PS30-PS37 of FPC4, 8 access signals of PS40-PS47 of FPC5, 8 access signals of PS50-PS57 of FPC6, 8 access signals of PS60-PS67 of FP7, 8 access signals of PS70-PS77 of FPC8 and 8 access signals of PS80-PS87 of FPC9. VDECT is the power supply signal of the FPC socket, used with capacitor C12. GND indicates the ground signal. The model of 9 FPC sockets can be selected as AFC42-S10FMA-1H.

[0066] In an exemplary embodiment, nine eight-to-one multiplexer circuits are provided. Figure 7 shown. Figure 7 U4 to U12 are 9 eight-to-one multiplexers. Each FPC socket corresponds to a multiplexer, which selects one input signal from the eight signals of the multiplexer for subsequent processing. The multiplexer relies on the combination of the three signals SEL0-SEL2 to select signals, and simultaneously selects 9 signals AI0-AI8 from a total of 72 signals PS00-PS07, PS10-PS17, PS20-PS27, PS30-PS37, PS40-PS47, PS50-PS57, PS60-PS67, PS70-PS77, and PS80-PS87. VCC is the power supply signal of the multiplexer, used with capacitors C13-C20. The model of the multiplexer can be RS2251XTSS16.

[0067] In an exemplary embodiment, the resistance-to-voltage conversion circuit is as follows Figure 8 shown. Figure 8U13.1, U13.4, U14.1-U14.4 and U15.1-U15.4 are 10 operational amplifiers (abbreviated as op amps). Among them, 9 operational amplifiers U13.4, U14.1-U14.4 and U15.1-U15.4 are used for signal conversion, and U14.4 is used as an example for illustrative explanation here. The signal AI0 selected by the eight-to-one multiplexer U4 is sent to the negative input terminal of the op amp U14.4, and the reference voltage VBASE is introduced to the positive input terminal of the op amp U14.4. The function of the op amp U14.4 is to convert the resistance signal of the pressure sensor that changes with the pressure into a voltage signal. Since the characteristic of the pressure sensor is that the pressure is proportional to the conductivity of the sensor, its resistance signal can also be further converted into a voltage signal AD0 in which the pressure is proportional to the voltage, and sent to the subsequent main control chip for AD conversion.

[0068] The reference voltage VBASE is generated by the operational amplifier U13.1 and the voltage regulator LDO2 and its supporting components. The voltage regulator LDO2 converts the unstable power supply into a stable voltage of 3.3 volts, and then adjusts the required reference voltage VREF through the potentiometer VR1. After amplification by the operational amplifier U13.1, the reference voltage VBASE is obtained to drive the operational amplifier. By adjusting VR1, the reference voltage VBASE can be adjusted, and the amplification factor of the pressure signal can be further adjusted. The 10 operational amplifier models can be selected from MCP6004T-I / ST. The voltage regulator LDO2 model can be selected from ME6209A33M3G.

[0069] In an exemplary embodiment, the main control chip circuit is as follows Fig. 9 shown. Fig. 9 The main control chip U1 uses a microcontroller with built-in AD conversion devices, and the model can be ESP32-PICO-D4. The 9 signals A10-A18 selected by the eight-to-one multiplexer are converted into voltage signals AD0-AD8 by the 9 operational amplifiers U13.4, U14.1-U14.4 and U15.1-U15.4, respectively, and then input into the nine analog channels AD0-AD8 of the microcontroller U1, and converted into digital signals by the built-in AD of the microcontroller U1. The microcontroller U1 controls the multiplexer through the combination of the three signals SEL0-SEL2, so that all 72 pressure sensor signals can be collected and converted into digital signals. The microcontroller U1 also has built-in wireless communication channels for WIFI and Bluetooth modules. ANT1 is the external antenna of the WIFI and Bluetooth modules, and wireless communication with the host computer can be carried out through the external antenna ANT1.

[0070] In an exemplary embodiment, the power supply module circuit is as follows Fig.10 shown. Fig.10BAT is a lithium battery that provides mobile power. SW is a power switch, and D1 is an anti-reverse diode, which is used for the power of the USB module to charge the lithium battery BAT in one direction. LDO1 is a low voltage difference linear power converter, also known as a voltage regulator, which is used to convert the unstable battery voltage into a stable 3.3V voltage to supply the main control chip, pressure sensor, soft cable interface, multiplexer, signal conversion circuit, main control chip, posture sensor, display screen and other circuits. The light-emitting diode D2 and the resistor R1 form a power indication circuit. C1 is a filter capacitor.

[0071] In an exemplary embodiment, the USB module circuit is as follows Fig.11 shown. Fig.11 USB1 is a TYPE C USB socket, which is used for wired communication with the host computer, program downloading and charging the lithium battery BAT. U2 is a UART to USB signal conversion chip, which is used to convert the UART signal TXD, RXD TTL signal from the microcontroller U1 into USB signals DP and DN. The circuit composed of transistors Q3, Q4 and resistors R27 and R28 is used to realize automatic program downloading. Its signals DTR and RTS come from the host computer, and the generated signals EN and BOOT are input to the microcontroller U1. The light-emitting diode D3 and resistor R2 form a signal indication circuit.

[0072] In an exemplary embodiment, the gesture sensor circuit is as follows Fig.12 shown. Fig.12 In the example, the attitude sensor U3 is a 6-axis gyroscope chip, and the model can be QMI8658A. The 6-axis gyroscope chip U3 communicates with the microcontroller U1 through I2C signals SDA1 and SCL1.

[0073] In an exemplary embodiment, the display screen socket circuit is as follows Fig.13 shown. Fig.13 P3 is the socket of the display screen, and a 2.54-1*4P single-row female socket can be used. The display screen communicates with the microcontroller U1 through another I2C channel SDA2 and SCL2 to display operation prompts, test status and hand force data change trend.

[0074] It should be noted that the terms "include", "comprising" or any other variations thereof used in this application are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the existence of other identical elements in the product or system including the element.

[0075] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the present application through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

[0076] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A tactile glove for badminton training, characterized in that: include: A glove body and a pressure sensor array, a flexible flat cable and a main control board arranged on the glove body; The pressure sensor array includes multiple groups of pressure sensors arranged in pieces; the multiple groups of pressure sensors are respectively arranged at the hand force positions corresponding to the finger force points and the palm force area on the glove body; The main control board is arranged on the back of the glove body; a soft cable interface, a multiplexer, a signal conversion circuit, a main control chip, a posture sensor and a display screen are arranged on the main control board; each group of pressure sensors is connected to a soft cable interface through a group of soft cables; each soft cable interface is connected to a multiplexer; the output end of each multiplexer is connected to a signal conversion circuit; the output end of each signal conversion circuit is connected to the main control chip; the signal conversion circuit is used to convert the pressure sensor signal collected by the multiplexer into a voltage signal, and transmit it to the main control chip for AD conversion, filtering, Linearization and storage processing are performed to generate the time-series pressure data of each hand force position; the posture sensor and the display screen are both connected to the main control chip; the posture sensor is used to collect the three-axis acceleration and three-axis angular velocity data of the hand and send them to the main control chip; the main control chip is also connected to the host computer for communication, and is used to transmit the time-series pressure data, three-axis acceleration and three-axis angular velocity data of each hand force position as hand force data to the host computer; the host computer is used to analyze the hand force data and give guidance and suggestions; the display screen is used to display operation prompts, test status and hand force data.

2. The tactile gloves for badminton training according to claim 1, characterized in that: The pressure sensor array includes 7 groups of pressure sensors; each group of pressure sensors includes 8 pressure sensors, and each group of 2 pressure sensors constitutes 4 pressure sensor units.

3. The tactile gloves for badminton training according to claim 2, characterized in that: Four pressure sensors are arranged on the side of the glove body that contacts the palm, corresponding to the thumb area, two pressure sensors are arranged at the base of the thumb, and two more pressure sensors are arranged on the thumb side of the palm below the base of the thumb; four pressure sensor units are arranged on each of the remaining four fingers, respectively arranged on the three fingertips and the connecting parts between the fingers and the palm; two groups of pressure sensors are arranged on the outer edge of the palm corresponding to the palm area according to the grip posture.

4. The tactile gloves for badminton training according to claim 2, characterized in that: The pressure sensor array also includes two groups of spare pressure sensors.

5. The tactile gloves for badminton training according to claim 2, characterized in that: The multiplexer is an eight-to-one multiplexer.

6. The tactile gloves for badminton training according to claim 2, characterized in that: The pressure sensor is a resistive sensor; the signal conversion circuit is a resistance-voltage conversion circuit.

7. The tactile gloves for badminton training according to claim 1, characterized in that: The flexible flat cable adopts a serpentine soft board; a plurality of sensor contact units are distributed on the serpentine soft board; each pressure sensor is connected to the serpentine soft board through a sensor contact unit.

8. The tactile gloves for badminton training according to claim 7, characterized in that: The flexible cable interface adopts an FPC socket; the gold finger plug of the snake-shaped flexible board is connected to the FPC socket of the main control board.

9. The tactile gloves for badminton training according to claim 1, characterized in that: The main control chip integrates WIFI and Bluetooth modules inside; the main control chip communicates wirelessly with the host computer via the WIFI and Bluetooth modules and an external antenna.

10. The tactile gloves for badminton training according to claim 1, characterized in that: The main control board is also provided with a USB module and a power supply module; the USB module is connected to the host computer, the main control chip and the power supply module respectively; the USB module is used for wired communication with the host computer, program programming download and charging the power supply module.

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