CN100534346C - Digital running shoes based on flexible array pressure sensors - Google Patents

Abstract

The present invention relates to digital running shoes based on flexible array pressure sensors, wherein the electronic device is an insole with a pressure sensor and an interface electrically connected thereto, one or more pressure sensors are respectively arranged at the front end, both sides of the forefoot and the rear end of the insole, the pressure sensor is electrically connected to the interface and is used for converting pressure from different parts of the sole into electrical signals; an information acquisition and transmission component comprises a left information acquisition component, a right information acquisition component and an information transfer component, which are used for collecting pressure electrical signals from the electronic devices in the left and right running shoes and transferring and sending them; a handheld terminal component is used for processing the signal from the information acquisition and transmission component to obtain the dynamic step characteristics of the digital running shoes with the flexible array pressure sensor in use, and the method is divided into two situations: wireless real-time monitoring and real-time analysis or wired real-time monitoring and offline analysis; the present invention can deeply understand the gait state of athletes and provide a reliable basis for coaches to formulate training plans.

Description

Digital running shoes based on flexible array pressure sensors

Field of the Invention The present invention relates to the field of sports training automation, in particular to digital running shoes based on flexible array pressure sensors.

Background technique

In track and field events, our country has a certain foundation in women's middle and long distance running and race walking, men's 110-meter high hurdles and other small events, and has achieved excellent results in many Olympic Games and world track and field competitions. But track and field is a traditional event in European and American countries. Even in our country's strong small events, we can't talk about much advantage. At most, we can only say that it has the world's advanced level, let alone many other track and field events.

At present, the scientific training methods of track and field are relatively simple. In addition to the routine monitoring of physiological and biochemical indicators, special ability training and improvement, the kinematic information of the training process is mainly obtained by the high-speed image analysis system, so as to evaluate and analyze sports techniques. The workload is huge, it needs to be implemented offline, and it cannot be convenient in real time. Moreover, due to the constraints of scene changes and calibration systems, only a single-point discrete method can be used to obtain local process information.

For the real-time acquisition of gait and gait information in the process of track and field athletes, no particularly effective method has been seen, and the gait and gait information of athletes is of great significance for evaluating the technical level and improvement of athletes, so it is urgent to develop track and field Gait information acquisition technology in the project. The digital running shoes based on the flexible array pressure sensor can detect and obtain the gait and gait information of athletes during track and field training in real time, and obtain information such as the number of steps, time, and flight status of athletes during exercise.

The core technology of the system is a digital running shoe that uses a flexible array of force/tactile sensors to detect the athlete's landing situation and obtain the athlete's gait information during exercise. The detection of pressure distribution can be seen earlier in the plantar pressure distribution measurement technology. According to literature records, as early as 1882, Beely completed the study on the measurement of plantar pressure distribution. The measurement technology has been developed from the simplest direct copy technology to the more advanced shoe inner pad measurement technology. Tekscan Corporation of the United States has developed an economical, fast, accurate, efficient and intuitive pressure distribution measurement system, which is the sensor structure of the Tekscan pressure distribution measurement system. The unique feature of Tekscan's pressure distribution measurement system is its patented technology - flexible thin film grid sensor.

The standard Tekscan pressure sensor consists of two very thin polyester films, one of which has several rows of strip conductors on its inner surface, and the other has several columns of strip conductors on its inner surface. The width of the conductor itself and the row spacing can be designed according to different measurement needs. The outer surface of the conductor is coated with a special pressure-sensitive semiconductor material coating. When the two films are integrated, the intersections of a large number of transverse conductors and longitudinal conductors form an array of pressure-sensing points. When an external force acts on the sensing point, the resistance of the semiconductor will change proportionally with the change of the external force, thus reflecting the pressure value of the sensing point. That is, when the pressure is zero, the resistance value is the largest, and the greater the pressure, the smaller the resistance value, which can reflect the pressure distribution between the two contact surfaces.

Since the application value of pressure distribution measurement in the fields of industry, human science, and behavioral science has become more and more recognized and valued by human beings, it has attracted the attention of developed countries. Brands occupy most of the market share in the world. These foreign brands are very expensive. Take the insole detection system as an example. The price of most foreign products reaches tens of thousands of dollars, which is difficult for the domestic industry to afford.

Adidas International Management Co., Ltd. submitted the invention patent "shoes and casing" to the China Patent Office on March 21, 2006. Its application number is: 200610065256.6 and its publication number is CN1839724A. The invention relates to a sports shoe for weight training or fitness applications, the sole part of the sports shoe has a recess for removably receiving an electronic device, a housing for an electronic pedometer, an accelerometer or a speed sensor, wherein the housing The shell has a shape corresponding to the shape of the recess in the sole. The invention can not only assemble the sensor in the sole of the shoe in a detachable manner and make it integrated with the sole, but also can integrate all electronic devices, such as pedometers, accelerometers or speed sensors, MP3 players or any other suitable electronic devices. It is assembled in the sole and integrated with the sole. An additional user interface can be connected to the above-mentioned electronic device by means of a cable or wireless transmission means, so that the measured data can be input and read even during operation.

According to the patent novelty search of the National Patent Office Retrieval Center, there are no training shoes that can be used for track and field training that can obtain gait information, and all that are seen are purely for weight training or fitness applications. At present, what is urgently needed in the training of domestic sports competitions is to obtain technical parameters such as the athlete's stride frequency and action sequence by measuring the athlete's gait and gait during the exercise, so as to analyze it.

Contents of the invention

The purpose of the present invention is to propose a new type of digital running shoes based on a flexible array pressure sensor and a detection method for the defects of current domestic and foreign sports training. According to the acquired gait information, the training level of athletes can be improved.

The technical solution of the present invention is: a digital running shoe based on a flexible array pressure sensor, including left and right running shoes and electronic devices placed in them, as well as information collection and transmission components and power supplies attached to the athlete's body, especially:

(a) The left and right running shoes are running shoes. The electronic device is the insole in the running shoe and the interface electrically connected to it. There are more than one pressure sensor on the front end of the insole, both sides of the forefoot and the rear end respectively. The pressure sensor and the The interface is electrically connected, and is used to convert the pressure from different parts of the athlete's sole into electrical signals;

(b) The information collection and transmission part includes a left information collection part, a right information collection part and an information transfer part, which are used to collect the pressure electric signal from the electronic device in the athlete's running shoes, and transmit it through transfer;

The composition of the left information acquisition part and the right information acquisition part are the same, and they are all composed of A/D converters, single-chip microcomputers, wireless transmitters and power supplies that are electrically connected to each other. Among them, the model of the A/D converter is DS0703, and its input terminal is connected The interface and output end are electrically connected to the input end of the single-chip microcomputer, the output end of the single-chip microcomputer is electrically connected to the wireless transmitter, and the wireless transmitter is connected to the information transfer component by radio to form a first wireless link, which is used to transfer the pressure of different parts of the athlete's running shoes Convert electrical signals into digital information and store and/or forward them to information relay components;

The information transfer part is composed of a wireless receiving transmitter and a power supply electrically connected to it, wherein the wireless receiver of the wireless receiving transmitter is radio connected with the wireless transmitters of the left information collecting part and the right information collecting part to form a first wireless link , the wireless transmitter of the wireless receiving transmitter is radio-connected with the wireless receiver of the handheld terminal part to form a second wireless link for relaying information from the left information collection part and the right information collection part in real time;

(c) The digital running shoe based on the flexible array pressure sensor also includes a hand-held terminal component, which is composed of a wireless receiver electrically connected to each other, a single-chip MCU with a display and buttons, and is used to process and display information from the information transfer component in real time, so as to Obtain the dynamic gait characteristics of the running shoes worn by the athletes during use, and the handheld terminal part is electrically connected with the host computer through the second cable to analyze and process batches of digital information.

As a further improvement to the existing technology, there are 4 to 10 pressure sensors, the model of which is YLFS0701; the interface is a pin-type plug or socket; the left information collection part and the right information collection The first cable is directly electrically connected to the handheld terminal part; the left information collection part and the right information collection part are both fixedly connected to the outer sides of the left and right running shoes via self-adhesive tapes, and the information transfer part is fixedly connected to the athlete's arm via self-adhesive tapes .

The composition of the left information collection part and the right information collection part is the same, or it is composed of a preamplifier, a wireless transmitter and a power supply electrically connected to each other, wherein the input end of the preamplifier is electrically connected to the interface, and the output end is electrically connected to the wireless transmitter. The wireless transmitter is radio-connected with the information transfer part to form a first wireless link for forwarding the pressure electrical signals of different parts of the athlete's left and right running shoes to the information transfer part.

The handheld terminal part is composed of a wireless receiver electrically connected to each other, an A/D converter, a single-chip MCU with a display, and buttons. Among them, the model of the A/D converter is DS0703, which is used to process and display real-time information from relay Part information.

A detection method for digital running shoes based on a flexible array pressure sensor, in particular: the method is divided into two situations: wireless real-time monitoring real-time analysis or wired real-time monitoring offline analysis;

Wireless real-time monitoring and real-time analysis is: after turning on the handheld terminal components, perform initialization settings, complete preparations and start exercising, real-time monitor and analyze the movement of one or more athletes at a unit distance and analyze and display them in real time through the handheld terminal components to obtain the athlete’s movement parameter;

Wired real-time monitoring offline analysis is: connect the hand-held terminal components to the computer and perform initialization settings. After completing the preparations and starting to exercise, record the movement of one or more athletes at a unit distance. After the training, read the data into the computer for detailed analysis. data analysis;

The handheld terminal component and the computer can work independently, that is, the handheld terminal component can be used for wireless real-time monitoring and real-time analysis during training, and the computer can be used for wired real-time monitoring and offline analysis after training.

The beneficial effects of the present invention are:

First, the digital running shoes based on the flexible array pressure sensor of the present invention include left and right running shoes and electronic devices placed therein, as well as information collection and transmission components and power supplies attached to the human body, wherein:

The electronic device is the insole of the pressure sensor in the running shoe and the interface electrically connected to it. There are more than one pressure sensor disposed on the front end, both sides of the forefoot and the rear end of the insole. The pressure at different parts of the body is converted into electrical signals;

The information collection and transmission part includes a left information collection part, a right information collection part and an information transfer part, which are used to collect the pressure electrical signals from the electronic devices in the left and right running shoes, and transfer and send them;

The digital running shoe based on the flexible array pressure sensor also includes a hand-held terminal part, which is used to process the signal from the information collection and transmission part, so as to obtain the dynamic gait characteristics of the running shoes worn by the athlete during use.

The sensor insole of the polyester sheet can judge the movement situation of the athlete during the movement through the pressure change felt by the pressure sensor. Therefore, the present invention can detect and obtain the gait and gait information of the athlete during track and field training in real time, and obtain the information of the athlete during the movement. Steps, time, flight status and other information.

Second, the method for digital running shoes based on the flexible array pressure sensor is divided into two situations: wireless real-time monitoring real-time analysis or wired real-time monitoring offline analysis;

Wireless real-time monitoring and real-time analysis is: after turning on the handheld terminal components, perform initialization settings, complete preparations and start exercising, real-time monitor and analyze the movement of one or more athletes at a unit distance and analyze and display them in real time through the handheld terminal components to obtain the athlete’s movement parameter;

Wired real-time monitoring offline analysis is: connect the hand-held terminal components to the computer and perform initialization settings. After completing the preparations and starting to exercise, record the movement of one or more athletes at a unit distance. After the training, read the data into the computer for detailed analysis. data analysis;

The hand-held terminal part and the computer of the present invention can work independently, that is, the hand-held terminal part can be used for wireless real-time monitoring and real-time analysis during training, and the computer can be used for wired real-time monitoring and offline analysis after training;

The handheld terminal component has multiple frequency points, which can support multiple athletes to train at the same time, collect and analyze the sports information of multiple athletes at the same time, conduct comparative analysis, compare the training effects of multiple athletes, and achieve simultaneous testing.

Description of drawings

Figure 1 is a structural diagram of a digital running shoe based on a flexible array pressure sensor.

Figure 2 is a structural diagram of a digital running shoe insole based on a flexible array pressure sensor.

Figure 3 is a working schematic diagram of a digital running shoe based on a flexible array pressure sensor.

Fig. 4 is a functional block diagram of components of the handheld terminal.

5 is a flowchart of a method for a flexible array pressure sensor based digital running shoe.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 is a structural diagram of a digital running shoe based on a flexible array pressure sensor; Figure 2 is a structural diagram of a digital running shoe insole based on a flexible array pressure sensor. In Fig. 1 and Fig. 2, 1 is a running shoe; 11 is an interface; 12 is a self-adhesive tape; 4 is a left information collection part; 13 is an insole; 14 is a pressure sensor.

The left information collection part 4 and the right information collection part 3 are all fixedly connected with the outer surface of the running shoe 1 through the self-adhesive tape 12; The pressure electrical signals of different parts of the athlete's left and right feet are forwarded to the information transfer unit 6 .

The front end of the insole 13, both sides of the forefoot and the rear end are respectively equipped with more than one pressure sensor 14, the pressure sensor 14 is electrically connected with the interface 11, and is used to convert the pressure from different parts of the sole into electrical signals.

Figure 3 is a working schematic diagram of a digital running shoe based on a flexible array pressure sensor. In Fig. 3, 1 is running shoes; 2 is the first cable; 3 is the right information collection part; 4 is the left information collection part; 5 is the first wireless link; 6 is the information transfer part; 7 is the display; 8 is A handheld terminal component; 9 is a second wireless link; 10 is a second cable.

Digital running shoes based on flexible array pressure sensors, including left and right running shoes and electronic devices placed in them, as well as information collection and transmission components and power supplies attached to the athlete's body, of which:

The left and right running shoes are running shoes 1, and the information collection and transmission parts include a left information collection part 4, a right information collection part 3 and an information transfer part 6, which are used to collect the pressure electrical signals from the electronic devices in the running shoes 1, and transfer and send them ;

The left information collection part 4 and the right information collection part 3 have the same composition, and are all composed of A/D converters, single-chip microcomputers, wireless transmitters and power supplies that are electrically connected to each other. Wherein, the model of the A/D converter is DS0703, and its input Terminal and interface, output end are electrically connected with the input end of single-chip microcomputer, and the output end of single-chip microcomputer is electrically connected with wireless transmitter, and wireless transmitter is connected with information transfer unit 6 wirelessly, to form the first wireless link 5, for connecting left and right feet The pressure electrical signals at different parts are converted into digital information, and stored and/or forwarded to the information transfer component 6;

The left information collection part 4 is identical to the composition of the right information collection part 3, or consists of a preamplifier, a wireless transmitter and a power supply electrically connected to each other, wherein the input end of the preamplifier is connected to the interface, the output end is electrically connected to the wireless transmitter Connecting, the wireless transmitter is wirelessly connected with the information transfer part 6 to form the first wireless link 5, which is used to forward the pressure electrical signals of different parts of the left and right feet to the information transfer part 6;

The digital running shoe based on the flexible array pressure sensor also includes a hand-held terminal part 8, which is used to process the signal from the information collection and transmission part, so as to obtain the dynamic gait characteristics of the running shoe 1 worn by the athlete during use;

There are 4 to 10 pressure sensors on the insole 13, the model of which is YLFS0701;

Both the left information collection part 4 and the right information collection part 3 are equipped with USB interfaces for direct electrical connection with the handheld terminal part 8 via the first cable 2;

The left information collection part 4 and the right information collection part 3 are all fixedly connected with the outer surface of the running shoe 1 through the self-adhesive tape 12, and the information transfer part 6 is fixedly connected on the athlete's human arm through the self-adhesive tape 12;

Information transfer part 6 is made up of wireless receiving transmitter and the power supply that is electrically connected with it, and wherein, the wireless receiver of wireless receiving transmitter is radio-connected with the wireless transmitter of left information collecting part 4, right information collecting part 3, to form the first Wireless link 5, the wireless transmitter of wireless receiving transmitter is radio-connected with the wireless receiver of hand-held terminal part 8, to form the second wireless link 9, for relaying in real time from left information collection part 4 and right information collection part 3 information;

The handheld terminal part 8 is electrically connected with the upper computer via the second cable 10, and is used for analyzing and processing batches of digital information.

Fig. 4 is a functional block diagram of components of the handheld terminal. The handheld terminal part 8 includes a wireless receiver in wireless communication, an A/D converter, key control, real-time display, and a single-chip microcomputer MCU for central control. The model of the A/D converter in the wireless communication is DS0703, which is used to receive the data transmitted by the information transfer part 6 in real time, and the display 7 displays in real time the motion parameter information obtained after being processed by the single-chip microcomputer MCU controlled by the center, and the key is used for the initialization of the device And some necessary parameter settings, such as the number of athletes, the distance of movement, etc.

The handheld terminal part 8 can observe the training situation of a single athlete in real time, or observe the training situation of many athletes in real time; Afterwards, offline analysis can be performed using a computer.

5 is a flowchart of a method for a flexible array pressure sensor based digital running shoe. in,

Figure a is the workflow diagram of wireless real-time monitoring and real-time analysis:

First open the hand-held terminal part 8 (step 100), carry out the initialization settings such as athlete's number (step 110), then open the information transfer part 6 and it is connected intact with left information collection part 4, right information collection part 3 wired connection (step 120 ), then use the handheld terminal part 8 to send an order to the information transfer part 6 through the second wireless link 9, and the information transfer part 6 is forwarded to the left information collection part 4, the right information collection part 3 through the wired connection, the left information collection part 4, Right information collection part 3 starts collecting (step 130), left information collection part 4, right information collection part 3 are fixed on the running shoe 1 (step 140), athlete starts to run (step 150), carries out real-time monitoring during athlete's motion Analysis (step 160), after the test is finished (step 170), close left information collection part 4, right information collection part 3 (step 180), close information transfer part 6 (step 190), then data transmission to computer (step 200) and perform data analysis (step 210).

Figure b is the workflow diagram of wired real-time monitoring offline analysis:

First connect hand-held terminal part 8 and computer (step 300) and carry out initialization setting (step 310) such as athlete's number, then connect hand-held terminal part 8 and left information collection part 4, right information collection part 3 and make it start collecting (step 320), after the left information collection part 4 of all athletes, the right information collection part 3 all start working (step 330), the athlete starts running (step 340), carries out midway timing (step 350) during the movement of the athlete, and the training ends After (step 360), stop left information collection part 4, right information collection part 3 (step 370), after left information collection part 4 of all athletes, right information collection part 3 all stop working (step 380), carry out wired reading Get data (step 390), after all player data are read (step 400), carry out data analysis (step 410).

Claims (7)

1. The utility model provides a digit running shoes based on flexible array pressure sensor, includes left running shoes, right running shoes and arranges the electron device in it to and attach to information acquisition transmission part and the power on the sportsman's human body, its characterized in that:

(a) the left running shoe and the right running shoe are running shoes (1), the electronic device is an insole (13) arranged in the running shoes (1) and an interface (11) electrically connected with the insole, more than one pressure sensor (14) is respectively arranged at the front end, two sides and the rear end of the front sole of the insole (13), and the pressure sensors (14) are electrically connected with the interface (11) and used for converting pressures from different parts of the soles of the athletes into electric signals;

(b) the information acquisition and transmission component comprises a left information acquisition component (4), a right information acquisition component (3) and an information transfer component (6) and is used for collecting pressure electric signals from electronic devices in running shoes (1) of athletes and transferring and sending the pressure electric signals;

the left information acquisition component (4) and the right information acquisition component (3) are the same in structure and are composed of an A/D converter, a single chip microcomputer, a wireless transmitter and a power supply which are electrically connected with each other, wherein the A/D converter is of a type DS0703, the input end of the A/D converter is electrically connected with the interface (11), the output end of the A/D converter is electrically connected with the input end of the single chip microcomputer, the output end of the single chip microcomputer is electrically connected with the wireless transmitter, and the wireless transmitter is electrically connected with the information transfer component (6) in a wireless mode to form a first wireless link (5) which is used for converting pressure electric signals of different parts of the running shoes (1) of the athletes into digital information and storing and/;

the information transfer component (6) consists of a wireless receiving transmitter and a power supply electrically connected with the wireless receiving transmitter, wherein a wireless receiver of the wireless receiving transmitter is in wireless electric connection with the wireless transmitters of the left information acquisition component (4) and the right information acquisition component (3) to form a first wireless link (5), and the wireless transmitter of the wireless receiving transmitter is in wireless electric connection with the wireless receiver of the handheld terminal component (8) to form a second wireless link (9) for transferring information from the left information acquisition component (4) and the right information acquisition component (3) in real time;

(c) the digital running shoe based on the flexible array pressure sensor also comprises a handheld terminal part (8), the handheld terminal part (8) consists of a wireless receiver, a single-chip microcomputer MCU (microprogrammed control unit) with a display (7) and keys which are electrically connected with each other, is used for processing and displaying the information from the information transfer part (6) in real time so as to obtain the dynamic step characteristics of the running shoe (1) worn by the athlete in use, and the handheld terminal part (8)

Is electrically connected with the upper computer through a second cable (10) and is used for analyzing and processing the digital information of the batch.

2. The digital running shoe based on flexible array pressure sensors of claim 1, wherein: 4-10 pressure sensors (14) are arranged at the front end, two sides of the half sole and the rear end of the insole (13) in total, and the model is YLFS 0701.

3. The digital running shoe based on flexible array pressure sensors of claim 1, wherein: the interface (11) is a pin header or a socket.

4. The digital running shoe based on flexible array pressure sensors of claim 1, wherein: the left information acquisition component (4) and the right information acquisition component (3) are both provided with USB interfaces and are used for being directly electrically connected with the handheld terminal component (8) through a first cable (2).

5. The digital running shoe based on flexible array pressure sensors of claim 1, wherein: left information acquisition part (4) fixed through the lateral surface of self-adhesive tape (12) with left running shoes, right information acquisition part (3) fixed through the lateral surface of self-adhesive tape (12) with right running shoes, information transfer part (6) through self-adhesive tape (12) fixed connection on the sportsman's arm.

6. The digital running shoe based on flexible array pressure sensors of claim 1, wherein: the left information acquisition component (4) and the right information acquisition component (3) or a preamplifier, a wireless transmitter and a power supply which are mutually and electrically connected are formed, wherein the input end of the preamplifier is electrically connected with the interface (11) and the output end of the preamplifier is electrically connected with the wireless transmitter, and the wireless transmitter is wirelessly and electrically connected with the information transfer component (6) to form a first wireless link (5) which is used for transferring pressure electric signals of different parts of the running shoes (1) of the athletes to the information transfer component (6).

7. The digital running shoe based on flexible array pressure sensors of claim 1, wherein: the handheld terminal part (8) is composed of a wireless receiver, an A/D converter, a single chip microcomputer MCU with a display (7) and a key which are electrically connected with each other, wherein the model of the A/D converter is DS0703 and is used for processing and displaying information from the information transfer part (6) in real time.

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