WO2016173256A1 - Wireless intelligent racket sensor - Google Patents

Abstract

A wireless intelligent racket sensor, the racket sensor is stuck to the tail end of a racket handle, comprises three portions of a six axis sensor (101), a MCU single-chip microcomputer (102) and a Bluetooth module (103) sequentially connected in electric mode. The six axis sensor (101) obtains motion data of the racket, and transmits the motion data to the MCU single-chip microcomputer (102) for processing. The MCU single-chip microcomputer (102) analyzes and processes the data from the six axis sensor, matches batting types through an algorithm, figures out the batting strength and speed, and generates quaternary data of a racket swing trajectory. The Bluetooth module (103) transmits the data after being analyzed and processed by the MCU single-chip microcomputer (102) to a mobile phone or a flat computer through Bluetooth signals. The mobile phone or the flat computer use a radar map to display the batting types and intelligently judge the batting characteristics, use a waveform map to display the batting strength and the batting speed, use a 3D method to enable the racket swing trajectory to reappear, and transmits the data to a cloud server through a network. The cloud server provides a data synchronization interface, calculates a ranking and achieves social intercourse functions, and prevents sport injury through big data analysis.

Description

 Wireless smart racket sensor  Wireless smart racket sensor

Technical field

The invention relates to sports equipment, and in particular to a wireless smart racket sensor.

Background technique

The prior art is to implant the smart chip into the badminton racket handle, and then pass the ball data through the USB. The line is transmitted to the computer for analysis, the operation is troublesome and the feedback cannot be provided in real time, and the guidance is poor, and the smart chip cannot be transplanted to the user's other existing beats.

Summary of the invention

In view of the deficiencies in the prior art, the technical problem to be solved by the invention is to provide a wireless smart racket sensor.

In order to solve the above technical problem, the invention is implemented by the following scheme: a wireless smart racket sensor, characterized in that the racket sensor is attached to the tail end of the racket handle, and includes the electrical connection 6 in sequence. Shaft sensor, MCU MCU, Bluetooth module; the racket sensor also includes FET M13407 circuit, LED indicator circuit, MP4050 Converter circuit, voltage regulator circuit;

The 6-axis sensor: obtaining the motion data of the racket and transmitting it to the MCU for processing;

The MCU MCU: analyzes and processes the sensor data, matches the type of playing by the algorithm, calculates the playing strength and speed, and generates a swing trajectory 4 Metadata

The Bluetooth module: transmitting data processed by the MCU MCU to the mobile phone or the tablet through the Bluetooth signal;

After the racket sensor sends data to the mobile phone or tablet via Bluetooth, the mobile phone or tablet uses the radar chart to display the type of hitting and intelligently judge the playing characteristics, and uses the waveform diagram to show the power and speed, using 3D. Reproduce the swing trajectory and transmit the data to the cloud server through the network;

The cloud server: provides a data synchronization interface, calculates rankings and implements social functions, and big data analysis prevents motion injuries.

Further, the sensor chip of the 6-axis sensor is an MPU6050, and the VLOGIC pin of the sensor chip is electrically connected. 104P capacitor C8, capacitor C8 is grounded at the other end. The REGOUT pin of the sensor chip is electrically connected with a 104P capacitor C9 and a capacitor C9. The other end is grounded, the ADO pin, the RESV_G pin, the CLKIN pin, and the GND pin of the sensor chip are grounded, and the VDD pin of the sensor chip is electrically connected to the 104P capacitor. C10, capacitor C10 is grounded at the other end.

Further, the MCU MCU model is STM32F051K8U6, and the 0_IN pin end of the MCU is The 0_OUT pin is electrically connected to the 8M crystal oscillator X1, the 0_IN pin is electrically connected to the 22P capacitor C5, and the 0_OUT pin is electrically connected to the 22P capacitor C6. Capacitor C5 and capacitor C6 are grounded at the other end.

Further, the model adopted by the Bluetooth module is BLEM201CMD.

Further, the field effect transistor M13407 is electrically connected to the field effect transistor M13407 with a 47K resistor R15. The negative terminal is also electrically connected to a 47K resistor R16, a 225P capacitor C17, and the other end of the capacitor C17 is grounded. The FET M13407 input is electrically connected with a 104P capacitor. C2, capacitor C2 is grounded at the other end.

Further, the MP4050 converter in the MP4050 converter circuit has five pins, one of which is GND grounded. VCC pin is connected to the power input terminal, CHRG pin terminal is electrically connected to 10K resistor R1, photodiode D13, photodiode D13 and the other end is electrically connected to 680 ohm resistor R2, resistor The other end of R2 is electrically connected to resistor R1, capacitor C1, power input terminal, capacitor C1 is grounded at the other end, and PROG pin is electrically connected with 1K resistor R3, resistor R3. The other end is grounded.

Further, the racket sensor further includes a voltage stabilizing circuit, and the voltage regulator used in the voltage stabilizing circuit is ME6219.

Compared with the prior art, the invention has the beneficial effects that the invention is to make the smart chip into an external device. Attached to the end of the racket, the data captured by the smart chip is wirelessly sent to the mobile phone or tablet via Bluetooth. The mobile app can analyze the swing action in real time, identify the type of playing, the strength of the ball, the speed of the swing, 3D. Reproduce the swing trajectory, and then achieve the effect of guiding teaching and training. Through statistical analysis, you can understand the characteristics of users' playing, offensive strategies, and understand the gap between themselves and professional players. Users do not need to change the racket or buy a new racket, use the smart racket sensor directly to use their own racket to improve the badminton technology. The invention relates to real-time capturing and analyzing the movement track of the user, comprehensively displaying the characteristics of the individual hitting, the offensive strategy and the physical condition, and proposing professional opinions for improving the user's technical movements, so that the user can better understand himself and quickly improve the skill and skill; 3D The technology reproduces the user's swing track and compares it with the standard operation, allowing the user to find the shortcomings of his own swing action and improve it; the user can also set the sport target, automatically count the completion of the day after the end of the exercise, real-time monitoring and tracking motion. After accumulating a large amount of user motion data, the big data analysis can be used to identify the characteristics of sports injuries, and promptly remind the user to achieve the effect of preventing sports injuries.

DRAWINGS

Figure 1 is a circuit diagram of the inventive Bluetooth module.

Figure 2 shows the circuit diagram of the MCU microcontroller.

Figure 3 is a circuit diagram of the field effect transistor M13407.

Figure 4 shows the voltage divider circuit of the invention.

Figure 5 is a circuit diagram of the inventive LED array.

Figure 6 is a circuit diagram of the inventive sensor chip.

Figure 7 shows the circuit diagram of the MP4050 converter.

Figure 8 is a diagram of the voltage regulator circuit of the invention.

Figure 9 is a block diagram of the racket sensor of the present invention.

Marked in the drawing: Bluetooth circuit 1; single chip circuit 2; field effect transistor M13407 circuit 3; voltage dividing circuit 4; LED Indicator circuit 5; sensor chip 6; MP4050 converter circuit 7; voltage regulator circuit 8; 6-axis sensor 101; MCU microcontroller 102; Bluetooth module 103 .

detailed description

The technical solutions of the invention are described in detail below with reference to the accompanying drawings and embodiments.

1 to 9 , a wireless smart racket sensor of the present invention is attached to a tail end of a racket handle, which includes electrical connections in sequence. 6-axis sensor 101, MCU MCU 102, Bluetooth module 103 three parts; the racket sensor also includes FET M13407 circuit 3, LED indicator circuit 5, MP4050 converter circuit 7, voltage regulator circuit 8; the 6-axis sensor 101: obtain the racket motion data is transmitted to the MCU microcontroller 102 processing; the MCU The single chip microcomputer 102: analyzes and processes the sensor data, matches the playing type by the algorithm, calculates the playing power and speed, and generates the swath trajectory 4 metadata; the Bluetooth module 103: the MCU microcontroller 102 After analyzing and processing the data, the data is transmitted to the mobile phone or the tablet through the Bluetooth signal; after the racket sensor sends the data to the mobile phone or the tablet through the Bluetooth, the mobile phone or the tablet computer uses the radar chart to display the type of the hitting ball and intelligently judge the playing characteristics, and uses the waveform diagram to display Power and speed, use The 3D reproduces the swing trajectory and transmits the data to the cloud server through the network; the cloud server provides a data synchronization interface, calculates rankings and implements social functions, and big data analysis prevents motion injuries.

Referring to FIG. 6, the sensor chip 6 of the 6-axis sensor 101 is modeled as MPU6050, and the sensor chip is The VLOGIC pin is electrically connected to a 104P capacitor C8, and the other end of the capacitor C8 is grounded. The REGOUT pin of the sensor chip is electrically connected with a 104P capacitor C9 and a capacitor C9. The other end is grounded, the ADO pin, the RESV_G pin, the CLKIN pin, and the GND pin of the sensor chip are grounded, and the VDD pin of the sensor chip is electrically connected to the 104P capacitor. C10, capacitor C10 is grounded at the other end. There is also a voltage dividing circuit 4 in the circuit. The voltage dividing circuit 4 is connected in parallel with a resistance of 10K and connected to the SCL and SDA pins. On.

Referring to FIG. 2, the MCU MCU 102 model is STM32F051K8U6, and the MCU circuit 2 is as shown in the figure. 2, the 0_IN pin terminal and the 0_OUT pin terminal of the microcontroller are electrically connected with an 8M crystal oscillator X1, and the 0_IN pin terminal is electrically connected with a 22P capacitor C5. The 0_OUT pin terminal is electrically connected with a 22P capacitor C6, and the capacitor C5 and capacitor C6 are grounded at the other end. The model adopted by the Bluetooth module 103 is BLEM201CMD, and its circuit is as shown in the figure. 4 is shown in the Bluetooth circuit 1 . The field effect transistor M13407 circuit 3 circuit field effect transistor M13407 is electrically connected with 47K resistor R15, and its negative terminal is also electrically connected to 47K Resistor R16, 225P capacitor C17, capacitor C17 is grounded at the other end, and the FET M13407 input terminal is electrically connected with 104P capacitor C2, capacitor C2 The other end is grounded.

Referring to FIG. 7, the MP4050 converter in the MP4050 converter circuit 7 has five pins, one of which is a pin. GND is grounded, VCC pin is connected to the power input terminal, CHRG pin terminal is electrically connected to 10K resistor R1, photodiode D13, photodiode D13 is electrically connected at the other end. European resistor R2, resistor R2 The other end is electrically connected to resistor R1, capacitor C1, power input terminal, capacitor C1 is grounded at the other end, PROG pin is electrically connected with 1K resistor R3, resistor Ground the other end of R3. The racket sensor further includes a voltage stabilizing circuit 8 , and the voltage regulator used in the voltage stabilizing circuit is ME6219.

Compared with the prior art, the invention has the advantages of realizing wireless Bluetooth data transmission and real-time display of mobile mobile phone application, and providing cloud background big data analysis, improving operability and practicability. And the racket sensor of the present invention can be mounted on a plurality of rackets.

The above description is only a preferred embodiment of the invention, and thus does not limit the scope of the invention, and the equivalent structure or equivalent process transformation made by using the invention specification and the drawings, or directly or indirectly applied to other related technical fields, The same is included in the scope of patent protection of the invention.

Claims (7)

1. A wireless smart racket sensor is characterized in that: the racket sensor is attached to the tail end of the racket handle, and comprises a six-axis sensor (101), an MCU single chip (102) and a bluetooth module (103) which are electrically connected in sequence; The racket sensor further includes a field effect transistor M13407 circuit (3), an LED indicator circuit (5), an MP4050 converter circuit (7), and a voltage stabilization circuit (8);

   The 6-axis sensor (101): obtaining the racket motion data and transmitting it to the MCU microcontroller (102) for processing;

   The MCU single chip computer (102): analyzes and processes the sensor data, matches the playing type by an algorithm, calculates the playing strength and speed, and generates a swath trajectory of 4 yuan data;

   The Bluetooth module (103): transmitting data analyzed and processed by the MCU MCU (102) to a mobile phone or a tablet through a Bluetooth signal;

   After the racket sensor sends data to the mobile phone or tablet via Bluetooth, the mobile phone or tablet uses the radar map to display the type of hitting and intelligently judge the playing characteristics, use the waveform to display the power and speed, use the 3D to reproduce the swing track, and pass the data through The network is transmitted to the cloud server;

   The cloud server: provides a data synchronization interface, calculates rankings and implements social functions, and big data analysis prevents motion injuries.
2. The wireless smart racket sensor according to claim 1, wherein the sensor chip (6) of the 6-axis sensor (101) is of the MPU6050, and the VLOGIC pin of the sensor chip is electrically connected with a 104P capacitor C8. The other end of the capacitor C8 is grounded. The REGOUT pin end of the sensor chip is electrically connected with a 104P capacitor C9, and the other end of the capacitor C9 is grounded. The ADO pin, the RESV_G pin, the CLKIN pin, and the GND pin of the sensor chip are grounded. The VDD pin of the sensor chip is electrically connected to the 104P capacitor C10, and the other end of the capacitor C10 is grounded.
3. The wireless smart racket sensor according to claim 1, wherein the MCU (102) model is STM32F051K8U6, and the 8M crystal oscillator X1 is electrically connected between the 0_IN pin end and the 0_OUT pin end of the MCU. The 0_IN pin terminal is electrically connected with a 22P capacitor C5, the 0_OUT pin terminal is electrically connected with a 22P capacitor C6, and the capacitor C5 and the other end of the capacitor C6 are grounded.
4. The wireless smart racket sensor according to claim 1, wherein the Bluetooth module (103) adopts a model number BLEM201CMD.
5. The wireless smart racket sensor according to claim 1, wherein the field effect transistor M13407 has a 47K resistor R15 electrically connected to the field effect transistor M13407, and the negative terminal is electrically connected to the 47K resistor. R16, 225P capacitor C17, the other end of the capacitor C17 is grounded, the input terminal of the FET M13407 is electrically connected with a 104P capacitor C2, and the other end of the capacitor C2 is grounded.
6. A wireless smart racket sensor according to claim 1, wherein the MP4050 converter circuit (7) has an MP4050 converter having five pins, one of which is GND grounded, and the VCC pin is connected to the power supply. Input terminal, CHRG pin terminal is electrically connected to 10K resistor R1, photodiode D13, photodiode D13 is electrically connected to 680 ohm resistor R2, and resistor R2 is electrically connected to resistor R1, capacitor C1, power input terminal, and capacitor C1 is grounded at the other end. The PROG pin is electrically connected to a 1K resistor R3, and the other end of the resistor R3 is grounded.
7. The wireless smart racket sensor according to claim 1, wherein the racket sensor further comprises a voltage stabilizing circuit (8), and the voltage regulator used in the voltage stabilizing circuit is ME6219.