KR20170090160A

KR20170090160A - Smart shoes and method of processing data the same

Info

Publication number: KR20170090160A
Application number: KR1020160010690A
Authority: KR
Inventors: 정웅; 장성권; 신승용; 가호경; 서동규
Original assignee: 엘지전자 주식회사
Priority date: 2016-01-28
Filing date: 2016-01-28
Publication date: 2017-08-07

Abstract

In this specification, a smart shoe for sensing motion and a method for processing motion data sensed in the smart shoe according to the present invention are disclosed. Here, an embodiment of the smart shoe according to the present invention is characterized by detecting zero velocity data from data generated based on operations of first sensors for sensing data, a second sensor, and the second sensor, Removing the step noise of the sensing data received from the first sensors based on the detected zero velocity data, filtering the sensed data from which the step noise has been removed, and filtering the sensed data based on the filtered sensing data and a predefined threshold And a tracking data processor for obtaining motion data of the smart shoe.

Description

TECHNICAL FIELD [0001] The present invention relates to a smart shoe,

The present invention relates to a smart shoe for sensing motion and a processing of motion data sensed in the smart shoe.

2. Description of the Related Art In recent years, a terminal has been implemented in the form of a multimedia device having a complex function, such as a smart phone, which performs functions related to production and consumption of contents in addition to past communication functions.

The form of a smart phone is extended not only to a conventional mobile terminal but also to various objects so that each object can be independently operated or functions similar to a smart phone between smart phones or objects.

In particular, a smart phone is widely applied to a wearable device that can be worn by a user or the like.

Wearable devices can range from devices such as smartwatches, smart glasses, head mounted displays (HMDs), and even clothing and footwear products that must be worn by the user.

[0002] A shoe as a wearable device, so-called smart shoe, usually performs a function of analyzing information on a wearer's activity and informing the user through a smart phone or itself. In order to perform these functions, sensors are used, but these sensors cause frequent replacement or failure due to high battery consumption due to power consumption in the circuit or module provided in the smart shoe. In addition, the sensors provided in the present smart shoes have a problem that the user's movement, that is, the missed step, can not be distinguished accurately.

The present invention solves the above-mentioned problems, and it is an object of the present invention to provide a PDR algorithm that accurately detects the movement (e.g., every step) of a smart shoe wearer based on a smart shoe tracking algorithm based on sensing data of a pressure sensor As a task.

Another object of the present invention is to easily and precisely calculate and use not only the footsteps of the smart shoe wearer but also the footpath, the walking direction, the stride, the height, etc. through the smart shoe tracking algorithm.

Another object of the present invention is to minimize the power consumption and maximize the efficiency of the smart shoe system including the circuit or module for the smart shoe tracking algorithm.

In this specification, smart shoes and a data processing method thereof according to the present invention are disclosed.

One embodiment of a smart shoe according to the present invention is a method for detecting zero velocity data from data generated based on operations of first sensors for sensing data, a second sensor, and the second sensor, The step noise is removed from the sensed data received from the first sensors based on the zero velocity data, and the sensed data without the step noise is filtered, and the sensed data, based on the filtered sensed data, And a tracking data processing unit for obtaining motion data of the smart shoe.

One embodiment of the smart shoe system according to the present invention is a smart shoe system comprising: an acceleration sensor for sensing acceleration data; a gyro sensor for sensing gyro data; and a smart shoe including a pressure sensor switched according to a step of a smart shoe wearer, And a tracking data processing unit for processing the motion data of the smart shoe wearer based on sensing data received from each sensor, wherein the tracking data processing unit comprises: a tracking data processor for generating zero velocity data from the sensed data from the pressure sensor The step noise of the first moving speed data generated based on the sensed acceleration data and the gyro data is removed based on the detected zero velocity data, and the step noise is removed from the first moving speed data Based on this, To obtain the data Im.

An embodiment of a method of processing data in a smart shoe according to the present invention includes the steps of receiving sensed data from first sensors, detecting zero velocity data based on operation of a second sensor, Removing step noises of the sensed data received from the first sensors based on the sensed data; filtering the sensed data from which the step noises have been removed; and filtering the sensed data based on the filtered sensed data and a predefined threshold And acquiring motion data of the smart shoe.

According to the present invention, there are the following effects.

According to at least one of the embodiments of the present invention, the PDR algorithm is capable of accurately sensing the movement (for example, every step) of the smart shoe wearer based on the smart shoe tracking algorithm based on the sensing data of the pressure sensor .

According to at least one of the embodiments of the present invention, the smart shoe tracking algorithm can easily and precisely calculate and use not only the every step of the smart shoe wearer but also the walking locus, the walking direction, the stride, the height, It is effective.

According to at least one of the embodiments of the present invention, power consumption of the smart shoe system including the circuit or module for the smart shoe tracking algorithm is minimized and efficiency is maximized.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating a smart shoe according to the present invention;
Fig. 2 is a yz-plane sectional view of a smart shoe according to the present invention, Fig.
FIG. 3 is a view showing in a timely manner the state of walking of a smart shoe wearer related to the present invention,
Figure 4 illustrates the pressure distribution acting on the smart shoe in accordance with the present invention,
Figure 5 is a flow chart for smart shoes associated with the present invention,
Figure 6 shows a pressure switch and a first circuit part associated with the present invention,
FIG. 7A is a cross-sectional view of the pressure switch according to the present invention before it is acted upon by pressure, FIG. 7B is a sectional view of the pressure switch according to the present invention,
Figure 8 illustrates several embodiments of smart shoes associated with the present invention,
9A and 9B are sectional views taken along the AA 'line in FIG. 8,
Figure 10 illustrates one embodiment of a pressure switch module 200 in accordance with the present invention,
Figure 11 illustrates several embodiments of smart shoes 100 in accordance with the present invention,
Figure 12 illustrates a configuration 1200 for a smart shoe tracking algorithm in accordance with the present invention,
13 is a diagram illustrating an example of a trace data graph including noise in the context of the present invention.
FIG. 14 illustrates an example of a noise-removed tracking data graph according to the present invention.
FIG. 15 is a view showing an example of a motion data graph for a smart shoe wearer according to the present invention,
FIG. 16 shows the UX diagrams of an example of the service scenario according to the present invention described above, and
17 is a flowchart showing a data processing method in a smart shoe system according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , &Lt; / RTI > equivalents, and alternatives.

The form of the smart terminal is extended not only to a conventional mobile terminal but also to various objects and is expanded to perform various functions independently of each other or in cooperation with a smart terminal or objects.

In particular, smart terminals are widely applied to wearable devices that can be worn by users and the like.

[0002] A shoe as a wearable device, so-called smart shoe, generally performs a function of analyzing information on an activity of a wearer and informing the user through a smart terminal such as a mobile terminal or itself.

Specifically, the smart shoe performs a function of tracking, sensing, or recording the activity time, activity distance, and activity trajectory of the wearer wearing the smart shoe.

A motion sensor is used to measure the position of a smart shoe in a two- or three-dimensional space, such as the wearer's activity distance and activity trajectory.

Such a motion sensor can grasp a specific position through an acceleration sensor and a gyro sensor as well as an approximate position through a satellite navigation apparatus such as a Global Positioning System (GPS).

Furthermore, by measuring the speed of the smart shoe through the motion sensor, it is possible to calculate the step of the wearer and the standard of each step unit.

However, such a motion sensor is required to maintain a state in which the position of the smart shoe can be measured at all times, that is, consuming power, resulting in a disadvantage of battery consumption, which leads to a disadvantage in weight saving of smart shoes.

In addition, when the movement trajectory is grasped through only the existing motion sensor, the user may not accurately distinguish the user's walking due to the noise generated in the sensor, and an accumulated error may occur. That is, the reference of the wearer's unit of the footwear may be erroneously calculated, which may cause problems in recording measurement.

1 is a block diagram for explaining a smart shoe 100 related to the present invention.

The smart shoe 100 includes a wireless communication unit 310, an input unit 320, a sensing unit 340, an output unit 350, an interface unit 360, a memory 370, a control unit 380, and a power supply unit 390, And the like. The components shown in Figure 1 are not essential for implementing the smart shoe 100 so that the smart shoe 100 described herein can have more or fewer components than the components listed above have.

More specifically, the wireless communication unit 310 among the above-described components can communicate with the smart shoe 100 and the wireless communication system, between the smart shoe 100 and another mobile terminal, or between the smart shoe 100 and the external server, And may include one or more modules to enable communication. In addition, the wireless communication unit 310 may include one or more modules for connecting the smart shoe 100 to one or more networks.

The wireless communication unit 310 may include at least one of a local communication module 311 and a location information module 312.

The short-range communication module 311 may be connected to the mobile terminal through the Bluetooth method to transmit / receive data.

The position information module 312 performs a function of measuring or transmitting position information of the smart shoe 100, and may include a concept of overlapping with a motion sensor 343 to be described later.

The input unit 320 may include a user input unit 321 (e.g., a touch key, a mechanical key, and the like) for receiving information from a user. The voice data or image data collected by the input unit 320 may be analyzed and processed by a user's control command. The input unit 320 may perform a function of receiving an on / off function for activating or deactivating the function of the smart shoe 100, and may be omitted as needed in order to reduce the production cost or reduce the weight.

The sensing unit 340 may include at least one sensor for sensing at least one of information in the smart shoe 100, surrounding environment information surrounding the smart shoe 100, and user information. For example, the sensing unit 340 may include a proximity sensor 341, an illumination sensor 342, a touch sensor, an acceleration sensor 344, a magnetic sensor 344, A G-sensor, a gyroscope sensor 343, a motion sensor 343, an RGB sensor, an infrared sensor (IR sensor), a fingerprint recognition A finger sensor, an ultrasonic sensor, an optical sensor, a battery gauge, an environmental sensor (for example, a barometer, a hygrometer, a thermometer, a radiation detection sensor, Sensing sensors, etc.), chemical sensors (e.g., electronic noses, healthcare sensors, biometric sensors, etc.). Meanwhile, the mobile terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

In particular, the acceleration sensor 344 and the gyro sensor 345 referred to in the present invention may be concepts included in the motion sensor 343.

In addition, the pressure sensor 346 may refer to a pressure switch module 200 (see FIG. 2) to be described later. The pressure sensor 346 may be a concept included in the motion sensor 343, but for convenience of description, the motion sensor 343 and the pressure sensor 346 are separately described.

The output unit 350 includes at least one of a display unit 351, an acoustic output unit 352, a haptrip module 353, and a light output unit 354 to generate an output related to visual, auditory, can do.

The interface unit 360 serves as a pathway to various kinds of external devices connected to the smart shoe 100. The interface unit 360 may include at least one of an external charger port, a wired / wireless data port, a memory card port, and a port for connecting a device equipped with the identification module can do. In the smart shoe 100, corresponding to the connection of the external device to the interface unit 360, the smart shoe 100 can perform appropriate control related to the connected external device.

The memory 370 also stores data to support various functions of the smart shoe 100. The memory 370 may store data and commands for operation of the control unit driven in the smart shoe 100. [

In addition to the actions associated with the application program, the control unit 380 typically controls the overall operation of the smart shoe 100. The control unit 380 may provide or process appropriate information or functions to the user by processing signals, data, information, etc., input or output through the components discussed above, or by using data and instructions stored in the memory 370 .

Under the control of the control unit 380, the power supply unit 390 receives power from an external power source and internal power to supply power to the components included in the smart shoe 100. The power supply unit 390 includes a battery, which may be an internal battery or a replaceable battery.

At least some of the components may operate in cooperation with each other to implement the method of operation, control, or control of the smart shoe 100 according to various embodiments described below. Also, the method of operation, control, or control of the smart shoe 100 may be implemented on the smart shoe 100 via at least one data, command, stored in the memory 370.

2 is a sectional view in y-z plane of the smart shoe 100 related to the present invention.

The sole frame 110 means a direct / indirect area where the sole of the wearer touches. That is, in the smart shoe 100, it may mean a frame of an area provided between the foot and the bottom of the wearer. The sole frame 110 includes an insole 111 directly contacting the sole of the wearer and an outsole 113 and an insole 111 provided at the bottom of the smart shoe 100 and contacting the outside, And a midsole 112 provided between the outer soles 113 and forming a predetermined volume.

The insole 111 may be an insole commonly referred to as an insole, but may be integrally formed without separating the insole 111 and the midsole 112 according to need, or may be provided in a combined form by a separate member or an adhesive.

A pressure switch module 200 including a pressure switch 210 (see FIG. 7) to be described later may be provided in the sole frame 110. The pressure switch module 200 provided in the sole frame 110 can be signalized or dataized by the pressure acting on the floor when the user touches the floor by walking or running.

That is, the walking or running of the wearer may attempt to make electrical contact with the first circuit portion 251 (see FIG. 7) by acting on the pressure switch module 200.

By electrical contact, the first circuit portion 251 (see FIG. 7) can generate an electrical signal (for example, a current).

The control unit recognizes the presence or absence of a current or signal generated in the first circuit unit 251 (see FIG. 7) as an on / off binary signal and controls various subsequent operations based on the on / off signal .

The first circuit unit 251 (see FIG. 7) generates a current or a signal, and the control unit 380 (see FIG. 1) recognizes the on / off current or signal generated in the first circuit unit 251 Similarly, the first circuit unit 251 (see FIG. 7) and the control unit 380 (see FIG. 1) may perform independent processes, but they may also refer to a series of operations performed in one circuit in some cases.

That is, the first circuit unit 251 connecting the control unit 380 (see FIG. 1) is electrically connected to the control unit 380 (see FIG. 1) by a pressure switch 210 It can be recognized as an ON signal.

FIG. 3 is a time-wise diagram illustrating a state in which the wearer 400 of the smart shoe 100 is walking and a corresponding response to a signal generated in association with the present invention.

When the wearer 400 places the smart shoe 100 on the floor and the on signal by the first circuit unit 251 (see FIG. 7) falls from the floor to the smart shoe 100, the first circuit unit 251 7) may occur.

A value of 1, that is, an ON signal is generated in the first circuit unit 251 (see FIG. 7) due to a certain specific pressure value acting on the state shown in FIGS. 3 and 4 in FIG. 3. In the remaining cases 1 and 5, A value of 0, that is, an OFF signal may be generated in the first circuit unit 251 (see FIG. 7).

However, such a result may be sufficiently varied depending on whether the threshold value for causing the signal generation, that is, the first circuit unit 251 (see FIG. 7), is set and the rigidity or interval of the pressure switch 210 is adjusted.

For example, when the critical pressure value is made larger, the pressure threshold value at which the on-signal can be generated becomes higher. Therefore, the value 1, that is, the ON signal is generated in the first circuit unit 251 , And the rest (1) and (5) - (7), a value of 0, i.e., an OFF signal may be generated in the first circuit unit 251 (see FIG. 7).

Therefore, it is possible to judge the start and end of one step of the wearer through these results, and it is possible to grasp the cycle of each step when the step is repeated.

In the case of FIG. 3, for example, the interpretation of (2) as the start of the step, and (1) passing through (7), can be interpreted as the end of one step.

Also, if the change from (2) to (1) is repeated, it is possible to interpret a plurality of steps by recognizing one cycle as one step.

That is, when analyzing the point where the velocity value of the smart shoe 100 through the motion sensor is 0 in order to analyze the unit of the step before, errors may occur due to various variables, that is, noise, but the pressure switch 210 (See FIG. 7), it is possible to distinguish the precise step unit by removing the noise.

The pressure switch 210 (see FIG. 7) can operate according to whether the pressure is applied to the sole frame 110 (see FIG. However, it is not required to necessarily be the lower end direction, and if necessary, it may be operated on the basis of the pressure with respect to the direction deviated by a certain angle with respect to the lower end direction. In the case where the plurality of pressure switches 210 It may work for multiple directions.

The direction of this pressure may be based on the wearer's general pace and force action, or may vary based on the wearer's different pace and force action for each individual.

Figure 4 illustrates the pressure distribution acting on the smart shoe 100 in accordance with the present invention.

FIG. 4 shows a pressure distribution on the x-y plane acting when the smart shoe 100 is put on the floor for 100 persons wearing the smart shoe 100.

Although there may be errors, it can be seen that a large pressure acts on the front part of the foot, especially around the big toe and the heel area of the foot.

Relatively small pressure of 100 kpa or less is applied to the center of the foot.

This pressure result can be used as a basis for judging the position at which the pressure switch 210 is mounted. If the pressure switch 210 is provided in the heel region receiving a relatively large pressure, there is a problem in the durability of the apparatus, and a disadvantage may be caused by the switch case, which will be described later, including the pressure switch 210 .

On the other hand, when the pressure switch 210 is biased toward the center of the foot area receiving a relatively small pressure, the pressure applied to the pressure switch 210 is too small, and the shape of the foot of the wearer, It is possible to make a mistake as to whether or not the pressure acts.

Therefore, the pressure switch 210 can be provided in a region W between the heel and the center of the foot, which is a region near 100 kpa. It may be provided in an action area of 100 kpa or more as necessary.

The distance D from the rear end of the sole frame 110 to the pressure switch 210 is about 50 mm or so in general in terms of the longitudinal axis component of the smart shoe 100 in the y- It is preferable that the pressure switch 210 is provided at a spaced apart position. The movement of the position of the smart shoe 100 can be determined to be as much as 20 mm above and below as required, such as the size and shape of the smart shoe 100.

In determining the unit of stepping, the shorter the time the pressure acts, the more precisely the point where one step ends and begins. That is, it is advantageous to minimize the length of a section having a speed of zero. As a result of the measurement, it was confirmed that the region where the velocity is 0 is relatively short, and the W region where the velocity is 100 kpa.

Fig. 5 is a schematic view of an inner structure of a human foot bone.

The W region may be in the vicinity of a heel bone, a cuboid bone, or a metatarsal bone when viewed from the bone of the wearer's foot.

Referring again to FIG. 4, the x-axis directional component of the smart shoe 100 may be provided near the center of both ends. A foreign object sensed by the wearer can be minimized when it is provided in the vicinity of the center of both ends, and the possibility that the pressure switch 210 is damaged due to an external force can be minimized.

The term "critical pressure value" may be applied differently depending on the physical and habitual factors such as the wearer's height, weight and foot size. However, since the on / off state of the pressure switch 210 is dependent on the material and the structure, the pressure switch 210 having a predetermined material and structure has a predetermined critical pressure value.

The motion sensor 343 (see FIG. 1) mounted on the smart shoe 100 may mean a configuration that directly senses the motion of the smart shoe 100. The motion sensor 343 (see FIG. 1) may include an acceleration sensor 344 (see FIG. 1) and a gyro sensor 345 (see FIG. 1). And may include only one of the acceleration sensor 344 (see FIG. 1) and the gyro sensor 345 (see FIG. 1) as needed.

Movement of the smart shoe 100 can be sensed through the motion sensor 343 (see Fig. 1), such as a positional change with respect to the position and time of the two-dimensional or three-dimensional image of the smart shoe 100. [

The motion sensor 343 (see FIG. 1) may be supplied with a current through the second circuit unit that constitutes a circuit independently of the first circuit unit 251 (see FIG. 7) to perform sensing.

The control unit 380 (see Fig. 1) can control the current supply to the second circuit unit. The control unit 380 (see FIG. 1) may include an MCU (Micro Controller Unit) 252 (see FIG. 7) such as a CPU.

6 is a flowchart of the smart shoe 100 related to the present invention. 1 and 7 are referred to for convenience of explanation.

The control unit 380 can perform the control of the motion sensor 343, that is, to supply or cut off the current to the second circuit unit based on whether the current or the signal of the first circuit unit 251 is generated.

When the time period during which no current flows in the first circuit unit 251 elapses for a certain period of time or longer and the period of the signal generated from the first circuit unit 251 is equal to or longer than the preset period of time, the wearer does not wear the smart shoe 100 , It can be interpreted as not moving.

Accordingly, the controller 380 can perform the system sleep mode to minimize the power consumed by the smart shoe 100 by deactivating the second circuit for controlling the motion sensor 343 (S101).

If a current or a signal is generated in the first circuit unit 251 through the pressure switch 210 during the system sleep mode, the wearer may be interpreted as wearing the smart shoe 100 (S102).

Therefore, the current of the first circuit unit 251 generated during the system sleep mode can activate the control unit 380 including the MCU 252 (S103). If the MCU 252 is already activated, this step may be omitted.

The activated control unit 380 can release the system sleep mode of the smart shoe 100 and start the system. The driving of the system may mean driving various electronic components and sensors provided in the smart shoe 100. In particular, the second circuit unit for controlling the motion sensor 343 may be activated to control the motion of the smart shoe 100 (S104).

The control unit 380 receives a signal of the on / off current through the first circuit unit 251 in real time and compares the signal generation cycle of the first circuit unit 251 generated by the pressure switch 210 with the preset time S105).

When the current flows into the first circuit unit 251 within a predetermined time, that is, when a value of 1, which is an ON value, is received within a predetermined time, the driving of the smart shoe 100 system can be continued. Particularly, the activation of the second circuit portion for controlling the motion sensor 343 can be continuously maintained (S106).

On the other hand, when the current does not flow in the first circuit unit 251 for a preset period of time, that is, when the value of the off value of 0 continues for a predetermined time or more, the controller 380 deactivates the entire system of the smart shoe 100, It is possible to switch to the sleep mode. In particular, the control unit 380 can perform current supply or cutoff for the second circuit unit.

Figure 7 shows a pressure switch 210 and a first circuit 251 associated with the present invention.

The pressure switch 210 can operate in conjunction with the first circuit portion 251. The first circuit part 251 may be mounted in the main board 250. 7, the pressure switch 210 and the first circuit unit 251 are schematically shown before the pressure switch 210 and the pressure switch 210 is fixed to the main board 250 by another separate member. .

The pressure switch 210 electrically isolates the first circuit portion 251 when a pressure less than a certain value is applied to the pressure switch 210. [

The first circuit part 251 can keep the open circuit, that is, the electrically open state, until the first circuit part 251 is connected by the conductive member 230 of the pressure switch 210. [ The first circuit portion 251 in this open state can be realized by two contact terminals 2511 spaced apart.

The pressure switch 210 can be electrically connected to the contact terminal 2511 of the first circuit unit 251 when a pressure greater than a specific value is applied to the pressure switch 210. [

The two separated contact terminals 2511 are electrically connected by the conductive member 230 of the pressure switch 210 so that the first circuit unit 251 can implement a closed circuit. When the first circuit unit 251 constitutes a closed circuit, a current or a signal may be generated.

The first circuit part 251 can generate a current or a signal by electrical contact.

The control unit 380 (see FIG. 1) recognizes the presence or absence of a current or a signal generated in the first circuit unit 251 as an on / off binary signal and controls various subsequent operations based on the on / can do.

The control unit 380 (see FIG. 1) may be interpreted as a separate process by recognizing the on / off signal according to the generation of the current or the signal of the first circuit unit 251, Lt; / RTI > That is, the current generated in the first circuit unit 251 can be directly recognized as an on signal by electrically connecting the control unit 380 (see FIG. 1).

8 is a front perspective view of a pressure switch module 200 in accordance with the present invention.

The pressure switch 210 and the main board 250 described in FIG. 7 may be provided as one pressure switch module 200 and the pressure switch module 200 may be mounted in the switch housing 260 . The details will be described later.

9A and 9B are sectional views taken along the line A-A 'in FIG.

Specifically, FIG. 9A is a sectional view before the pressure switch 210 according to the present invention is acted upon by pressure, and FIG. 9B is a sectional view showing a state where the pressure switch 210 according to the present invention is acted by pressure.

The main board 250 is mounted on the lower end of the pressure switch 210 so that the first circuit unit 251 can be mounted. The main board 250 may mount the second circuit unit and the control unit 380 (see FIG. 1), or may include a second circuit unit or a control unit 380 (Refer to FIG.

The first circuit unit 251 may be provided in the form of a combination of a film and a metal electrode, or may be provided in the form of a film and a conductive polymer. Or in the form of films and CNTs, or in the form of films and graphenes.

Alternatively, the first circuit unit 251 may be provided in the form of an injection mold and an MID (Mold Interconnect Devices).

The conductive member 230 of the pressure switch 210 may serve to electrically connect the first circuit unit 251 when the first circuit unit 251 contacts the first circuit unit 251. The conductive member 230 may include a conductive material that flows well. Therefore, it may be a conductive silicon (silicon), a metal gasket, a metal plate or a metal deposition, a conductive polymer, a CNT, a graphene, or the like.

Or a combination of an injection mold and a mold interconnect device (MID).

The fixing member 220 of the pressure switch 210 is configured to separate the conductive member 230 from the first circuit portion 251 when a pressure of less than a certain value is applied, 1 circuit part 251 of the first embodiment.

The fixing member 220 may include a main substrate 250, i.e., a non-conductive fixing portion 222 mounted on the first circuit portion 251. The nonconductive fixing portion 222 may not affect the current flow of the first circuit portion 251 even though the nonconductive fixing portion 222 is directly fixed to the first circuit portion 251 or the main substrate 250 including the nonconductive material.

The displacement portion 223 of the fixing member 220 may be connected to the nonconductive fixing portion 222 through the upper end 221 of the fixing member 220. [ The displacement portion 223 of the fixing member 220 can directly serve to fix the conductive member 230 and to displace the conductive member 230 by a specific pressure value to connect the conductive member 230 to the first circuit portion 251 have.

At least one region of the upper portion 221 may be provided with an elastic material so that the displaceable portion 223 is displaced by a specific pressure value. The upper part 221 can displace the fixed displacement part 223 downward by the elasticity of at least one region so that the conductive member 230 touches the first circuit part 251.

The displacement portion 223 and the conductive member 230 of the fixing member 220 may be coupled through a double injection.

The fixing member 220 may be a silicone rubber or a plastic injection molding such as a polycarbonate or a poly-amide. Or a metal plate or metal die casting.

The nonconductive fixing part 222 can be branched to the first area of the upper end 221 and the displacement part 223 can be branched to the lower end respectively in the second area of the upper end 221. [ The upper portion 221, the non-conductive fixing portion 222, and the displacement portion 223 may be integrally formed, or a different material may be formed by a double injection process or the like, if necessary.

The second region may be located between the first regions. Each of the second regions or the first regions may include a plurality of regions of the upper portion 221 as necessary.

The first region may include three regions which are both ends and a central region of the upper end 221 of the pressure switch 210, and the second region may include between three regions of the first region. The nonconductive fixing part 222 of the pressure switch 210 can be stably coupled to the main substrate 250 or the first circuit part 251 and the second area can be stably connected to the first area 251. [ The conductive member 230 can be prevented from being inadvertently connected to the first circuit unit 251. [

The nonconductive fixing portion 222 and the displacement portion 223 may form a slit 224 spaced apart by a predetermined distance.

At least one region including the elastic material of the upper portion 221 may mean an area corresponding to the slit 224 formed. The nonconductive fixing portion 222 is fixed to the boundary of the slit 224 and the displacement portion 223 is displaced so that displacement can be made to take place when the region near the slit 224 is a particularly elastic material.

The pressure switch 210 may be mounted on the switch housing 260.

The switch housing 260 can fix the pressure switch 210 by coupling the upper case 261 and the lower case 262. [

The upper case 261 may have a thin planar shape so that the pressure can be transmitted from the soles of the wearer to the pressure switch 210 and may be provided directly in contact with the pressure switch 210. The upper case 261 may include a material having elasticity, if necessary, to transmit force to the pressure switch 210. For example, the upper case 261 may be formed of a material of silicon (silicon).

10 illustrates an embodiment of a pressure switch module 200 in accordance with the present invention.

The pressure switch module 200 may be a structural unit for mounting a component that performs a function of a pressure sensor such as the pressure switch 210 and the main board 250, May include the entirety.

The switch housing 260 can mount components such as the pressure switch 210 and the main board 250. And an upper case 261 and a lower case 262 provided on the front surface of the switch housing 260.

The front case 263 may be coupled between the two components to increase the reliability of coupling between the main board 250 and the upper case 261. [

The power supply 390 may also be mounted in the switch housing 260 of the pressure switch module 220. The power supply unit 390 may serve to supply power to the controller 380 or the like.

And a battery cover 264 coupled to the lower case 262 for smooth replacement of the power supply 390.

The gap between the battery cover 264 and the lower case 262 is blocked by the waterproof ring 265 so that a problem of waterproofing can be prevented.

The switch housing 260 may be mounted with the second circuit portion if necessary.

Referring again to FIG. 2, the switch housing 260 including the pressure switch 210 on the basis of the xy plane is configured to have a heel bone, a cuboid bone or metatarsal bones of the first metatarsal bones. Accordingly, the switch housing 260 for mounting the pressure switch 210 may be provided in the pressure area of the sole frame 110.

The sole frame 110 may have a seating portion 120 that forms a step in an area where the switch housing 260 is to be mounted. The seating portion 120 on which the switch housing 260 is seated may be formed in the midsole portion 112 of the sole frame 110.

Figure 11 illustrates several embodiments of the smart shoe 100 in connection with the present invention.

11A, the main substrate 250 having the pressure switch 210 and the first circuit unit 251 may be stacked in the z-axis direction. When the pressure switch 210 and the main substrate 250 are laminated, a separate circuit line 270 for connecting the two structures from the outside is not required, so that it is possible to minimize the material cost and the possibility of causing problems due to disconnection.

Further, since the switch housing 260 can mount the pressure switch 210 and the main board 250 in a small volume, it is possible to minimize the total volume and to reduce the area of the seating part 120 (see FIG. 2) Can be minimized.

11B shows a method of providing the main substrate 250 and the pressure switch 210 so as not to overlap with each other in the z-axis direction. A relatively high pressure acts on the B line rather than the A line so that the main substrate 250 can be provided laterally on the xy plane without overlapping with the pressure switch 210 in the z axis direction so as not to be located on the B line .

11C illustrates that the main board 250 and the pressure switch 210 are electrically connected to each other through a separate connection line 270. In FIG. Compared with the embodiment of FIGS. 11A and 11B, since the main board 250 is completely located on the A-line, the load acting on the wearer's foot can be minimized, so that the durability reliability of the main board 250 can be increased.

The smart shoe system according to the present invention has been described above with reference to Figs. This smart shoe system can be operated on the basis of the smart shoe tracking algorithm based on the sensing data of the pressure sensor described above in the PDR algorithm.

In particular, the smart shoe system operated on the basis of the smart shoe tracking algorithm will be described in more detail below.

Here, the smart shoe tracking algorithm according to the present invention can precisely sense the movement (e.g., every step or step) of the smart shoe wearer based on the sensing data of the pressure sensor in the PDR algorithm. In addition, the smart shoe tracking algorithm can easily and precisely calculate the foot trajectory, the walking direction, the stride, and the height of the smart shoe wearer. The smart shoe tracking algorithm can contribute to minimizing the power consumption and maximizing the efficiency of the smart shoe system in conjunction with the pressure switch or the pressure sensor circuit or module.

The terminal is implemented in the form of a multimedia player having a plurality of functions so as to be able to perform functions related to production and consumption of contents in addition to the conventional communication function. In addition, such a mobile terminal is extended to various objects so that various objects can be independently operated or various functions can be performed between the mobile terminal and objects. Particularly, the mobile terminal has been widely applied to a wearable device, that is, a wearable device, or has been developed in such a form.

Wearable devices are implemented in devices such as smartwatch, smart glass, and head mounted display (HMD), and products such as clothes and shoes worn by the user.

Hereinafter, in order to facilitate the understanding of the present invention and for convenience of explanation, the mobile terminal will be described as a wearable device, and the wearable device will be described with reference to shoes, so-called smart shoes. Such a smart shoe can analyze the information about activity such as walking of the wearer, and perform analysis processing through other mobile terminals or the like, and can perform a function of notifying the analysis result.

The smart shoe according to the present invention can be used in a variety of situations such as moving time, velocity, distance or position, orientation, trace or path, , Attitude, stride, and the like of the motion data can be tracked, sensed, and recorded. At this time, basically, in the present invention, accurate tracking and sensing are performed without missing the step of the smart shoe wearer. This makes it possible to sense the various motion data described above. The motion data also includes sensing data for each step of the smart shoe wearer.

In sensing motion data of a smart shoe wearer, a plurality of sensors may be required. The plurality of sensors include an acceleration sensor, a gyro sensor, a pressure sensor, and the like. At this time, at least one of the plurality of sensors is not necessarily included in the smart shoes.

Acceleration sensors and gyro sensors may also be called PDR sensors or inertial sensors. In the case of measuring the wearer's motion data through the PDR sensor, the PDR sensor must maintain a state in which the PDR sensor can always measure, that is, consuming current, and there may be a disadvantage of battery consumption. It has disadvantages. In addition, when the movement trajectory is grasped through the PDR sensor, the wearer's step can not be precisely distinguished due to noise generated in the sensor, and an accumulated error may be caused thereby. In order to solve this problem, the present invention further employs the above-described pressure switch or pressure sensor in the PDR sensor, and the above description is referred to, and redundant description is omitted here.

In summary, according to the present invention, it is possible to sense movement data of a smart shoe wearer more widely than in the prior art according to the smart shoe tracking algorithm, and it is easier and more accurate at the time of sensing than the conventional method.

Hereinafter, the smart shoe tracking algorithm according to the present invention, the motion data sensing through the smart shoe tracking algorithm, and the smart shoe system therefor will be described in detail.

Figure 12 illustrates a configuration 900 for a smart shoe tracking algorithm in accordance with the present invention.

Hereinafter, the configuration for the smart shoe tracking algorithm shown in FIG. 12 will be described as a smart shoe tracking data processing unit 1200 or a tracking data processing unit 1200 (hereinafter referred to as a tracking data processing unit for convenience). Here, the trace data processing unit 1200 may be implemented with hardware such as a circuit or a module, or software embedded in a configuration of the smart shoe system described above. However, the tracking data processing unit 1200 of FIG. 12 does not necessarily have to be a configuration of smart shoes, and may be designed to be a different device capable of receiving and processing sensed data of sensors of the smart shoe.

The tracking data processing unit 1200 according to the present invention estimates the moving speed (Velocity (3D)) and the moving direction (Attitude (3D)) of the smart shoe wearer through the sensor module mounted on the smart shoe, 3D) can be cumulatively calculated.

Referring to FIG. 12, the operation of the tracking data processing unit 1200 according to the present invention will now be described.

The tracking data processing unit 1200 may process the tracking data for the smart shoe wearer based on the sensing data of the sensor module mounted on the smart shoe using the processing unit 1220 and the filter unit 1250. [ This is related to the PDR algorithm related to the conventional inertial navigation system, and a detailed description thereof is based on the description of the conventional PDR algorithm, and a detailed description of the PDR algorithm is omitted here.

The process of processing the tracking data through the processing unit 1220 and the filter unit 1250 will be described first.

First, the processing unit 1220 includes a first processing unit 1222 and a second processing unit 1224.

The first processing unit 1222 receives the sensed data from the first sensor 1212, processes the received sensed data, and outputs the sensed data to the first integrator. Here, the first sensor 1212 includes, for example, an accelerator sensor. In particular, the first processor 1222 subtracts the gravity from the sensed data from the first sensor 1212.

The second processing unit 1224 receives the sensed data from the second sensor 1214 and processes the received sensed data. The processed data is output to the first processing unit 1222 and the mixer. Here, the second sensor 1214 includes, for example, a gyro sensor. The movement direction data may include yaw data, pitch data, roll data, and the like. The second processing unit 1224 calculates the moving direction A of the insole of the smart shoe based on the sensed data from the second sensor 1214.

In this case, the output data of the first integrator may be the moving speed data V itself, and the data processed by the second processing unit 1224 may itself be the moving direction data A of the smart shoe wearer have.

In the above, the data excluding the moving speed data v1, i.e., the moving distance data p0 in the output data of the first integrator are inputted again to the second integrator and accumulated. The moving speed data v1, the output data of the second integrator, the moving distance data p1 and the moving direction data a1 of the second processing unit 1224 are input to the filter unit 1250. The filter unit 1250 filters the moving speed data v1, the moving distance data p1, and the moving direction data a1 using, for example, a Kalman filter that is mainly used in the PDR algorithm described above . The input moving speed data v1, the moving distance data p1 and the moving direction data a1 are filtered by the filter unit 1250 to calculate moving speed data v2, moving distance data p2, The movement direction data a2 is output. The moving speed data v2, the moving distance data p2, and the moving direction data a2 thus outputted are output to the mixer unit 1260. [

The mixer unit 1260 includes a first mixer with respect to the moving distance, a second mixer with respect to the moving speed, and a third mixer with respect to the moving direction.

The first mixer mixes the movement distance data p1, which is the output of the second integrator, and the movement distance data p2, which is the output of the filter unit 1250, and calculates the final movement distance data P.

The second mixer mixes the moving speed data v1 extracted from the first integrator and the moving speed data v2 output from the filter unit 1250 to calculate the final moving speed data V. [

The third mixer mixes the movement direction data a1, which is the output of the second processing unit 1224, and the movement direction data a2, which is the output of the filter unit 1250, and calculates the final movement direction data A.

If the tracking data processing unit 1200 processes the tracking data for the smart shoe wearer based on the sensing data of the sensor module mounted on the smart shoe using the processing unit 1220 and the filter unit 1250 of FIG. 12, The graph shown in FIG. 13 can be obtained.

13, in the case of processing based on the data sensed by the first sensor 1212 and the second sensor 1214, there is a noise region 1300 as shown in FIG. 13, The step may not be detected accurately. This is because it is impossible to accurately measure the zero velocity according to the influence of the noise, and it may be difficult to distinguish the previous step from the next step, so that one step may not be detected. For example, a smart shoe wearer may not be a serious problem in a walking or static state, but in the case of a moving speed increase or a narrow stride, the smart shoe wearer may affect the whole data and give an error. In addition, the noise may occur at every step, which may cause a large error in the entire data. Therefore, minimizing or eliminating the noise region can contribute to more accurate tracking data calculation.

In order to minimize or eliminate errors due to the noise described above, the present invention further refers to the sensing data of the pressure sensor described above.

Referring to FIG. 12, the tracking data processing unit 1200 further includes a detection unit 1230 and a fourth mixer 1240.

The detection unit 1230 receives the sensed data from the third sensor 1216, processes the received data, and outputs the processed data to the fourth mixer 1240. Here, the third sensor 1216 may be a pressure sensor according to the present invention. Therefore, a detailed description of the pressure sensor will be omitted and omitted from the above description. The data sensed by the pressure sensor may be generated, for example, every step of the smart shoe wearer. This may be, for example, a graph 1410 generated at the bottom of Fig.

The detection unit 1230 detects the zero velocity from the data sensed and inputted by the third sensor 1216. This can be easily detected from the graph data as shown in FIG. 14, which is sensed when the third sensor 1216 operates as a pressure switch according to the wearer's stepping motion.

The zero velocity data z1 detected by the detection unit 1230 is mixed with the moving velocity data v1 extracted from the first integrator in the fourth mixer 1240 and the thus mixed data is input to the filter unit 1250 (V1 ') which is different from the input (v1). Then, as described above, the moving distance P, the moving speed V, and the moving direction A data are calculated after filtering in the filter unit 1250.

Referring to FIGS. 13 and 14, there is a noise region 1310 in FIG. 13 as described above. Referring to FIG. 14, data filtered through the detector 1230 and the fourth mixer 1240 are canceled to minimize the zero velocity, thereby clearly recognizing each step and processing it . Therefore, in the case of FIG. 13 described above, a portion that can be missed for a specific step or the like that can be generated is compensated, and accurate data calculation is possible.

Therefore, according to FIG. 14, since the zero velocity is minimized with respect to the motion data of the smart shoe wearer, that is, the motion in the x, y, and z axes, each step can be accurately calculated. Therefore, It is possible to easily and precisely calculate the detection angle data and the foot angle correction data, so that the movement locus, the moving speed, the moving direction, the stride, the report, etc. of the wearer can be calculated easily and accurately as shown in FIG. This is because the PDR sensor or the inertial sensor can not accurately acquire the zero velocity of one step, thereby increasing system efficiency and power consumption compared to the case where correction is required due to accumulated errors. In addition, when only PDR sensor data is used, wireless positional position correction is required based on wi-fi or Bluetooth, but using the pressure sensor data allows more accurate data sensing without using such a wireless positioning method.

In addition, in relation to stride or reporting, conventionally, when a mountain or building stairs are used, the altitude is used as an air pressure sensor. However, in this case, when the ambient pressure suddenly changes due to weather, wind or the like, The pressure change was severe due to other factors such as open and closed, accurate data sensing was impossible, and the reliability of the sensed data was low. On the other hand, in the present invention, zero velocity is minimized based on sensing data of a simple pressure sensor (pressure switch), so that it is possible to easily and accurately calculate data without a pressure sensor or other configuration.

The tracking data processing algorithm according to the present invention is used in a tracking and management service of a wearer's exercise information to measure the calorie consumption amount and weight change of the wearer and automatically recognize bike riding, walking, running and the like, Scheduling services are also possible. In addition, according to the tracking data processing algorithm of the present invention, it is possible to provide a tracking and management service for walking attitude of a wearer (such as a soldier), an indoor navigation service of a mart, a library, a public institution, an outdoor bicycle, Service, tracking and tracking of walking area, exercise measurement and management service using stride and report, and wearer tracking service in GPS or Wi-fi unavailable area.

16 is a UX diagram of an exemplary service scenario according to the present invention.

FIG. 16A shows a case where the moving distance of 10 m is walked at an average speed, and FIG. 16B shows UX of the data obtained through the tracking data processing unit in the case of FIG. 16A. Referring to FIG. 16B, the data obtained through the tracking data processing unit with respect to the moving distance of 10m in FIG. 16A is 10.072m.

FIG. 16C shows a case in which the moving distance of 10 m is walked at a high speed like an alarm, and FIG. 16D is UX of the data obtained through the tracking data processing unit in the case of FIG. 16C. Referring to FIG. 16D, the data obtained through the tracking data processing unit with respect to the moving distance of 10 m in FIG. 16C is 10.066 m.

In addition, FIG. 16E is UX for the stride, speed, and total distance data accumulated through the tracking data processing unit for a predetermined time.

17 is a flowchart showing a data processing method in a smart shoe system according to the present invention.

According to the present invention, the tracking data processing unit of the smart shoe system receives sensing data from one or more first sensors (S1702), receives the sensed data based on the operation of the second sensor, (S1704). Here, the first sensors include, for example, the first sensor (acceleration sensor) and the second sensor (gyro sensor) of FIG. 12 described above. Here, the second sensor includes the third sensor (pressure sensor) of Fig. 12 described above.

The tracking data processing unit removes step noise of the sensing data received from the first sensors based on the detected zero velocity data (S1706). The step noise refers to the noise 1310 shown in FIG. 13, and the step noise is removed to indicate that the process is performed as shown in FIG.

The tracking data processing unit filters the sensing data from which the step noise has been removed (S1708).

The tracking data processing unit obtains the motion data of the smart shoe based on the filtered sensing data and a predefined threshold (S1710). Here, the predefined threshold value may indicate a value according to data normalization according to the filtering in the filter unit. In this way, data normalization can be helpful for data management and so on.

According to various embodiments of the invention described above, each, or any combination thereof, the PDR algorithm can be implemented without missing a smart shoe wearer's movements (e.g., every step) based on a smart shoe tracking algorithm based on the sensed data of the pressure sensor The smart shoe tracking algorithm can easily and precisely calculate and use the walking trajectory, the walking direction, the stride, and the height as well as the step of the smart shoe wearer through the smart shoe tracking algorithm. Minimize power consumption and maximize efficiency of smart shoe systems with circuits or modules for algorithms

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

The foregoing detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

100: smart shoes 110: outsole frame
111: Insole 112: Midsole
113: outsole 120: seat part
200: pressure switch module 210: pressure switch
220: fixing member 221:
222: Fixing portion 223: Displacement portion
224: Slit 230: Conductive member
250: main board 251: first circuit part
2511: contact terminal 252: MCU
260: switch housing 261: upper case
262: lower case 270: connecting line
900: trace data processing unit 912, 914, 916:
922: first processing section 924: second processing section
930: Detector 950:

Claims

In smart shoes,
First sensors for sensing data;
A second sensor; And
Detecting zero velocity data from data generated based on the operation of the second sensor, removing step noise of the sensing data received from the first sensors based on the detected zero velocity data, A tracking data processor for filtering the noise-removed sensed data and obtaining motion data of the smart shoe based on the filtered sensing data and a predefined threshold,
Including smart shoes.

The method according to claim 1,
The first sensors,
Characterized in that it comprises an acceleration sensor and a gyro sensor.

3. The method of claim 2,
Wherein the second sensor comprises:
And a pressure sensor which is switched according to a step of the smart shoe wearer.

The method of claim 3,
Wherein the motion data of the smart shoe comprises:
Wherein the data includes data on a moving distance, a moving speed, and a moving direction.

5. The method of claim 4,
Wherein the tracking data processing unit comprises:
And the step noise is removed by correcting the moving speed data among the motion data of the smart shoe using the zero velocity data detected from the data sensed by the second sensor.

6. The method of claim 5,
The filtering may include:
A smart shoe characterized by using a Kalman filtering technique.

5. The method of claim 4,
Wherein the movement direction data is determined by applying a threshold to the first movement direction data obtained by calculating the insole movement direction from the sensing data of the gyro sensor and the filtered second movement direction data.

The method according to claim 1,
Wherein the tracking data processing unit comprises:
PDR data processing technique.

5. The method of claim 4,
Wherein the motion data of the smart shoe comprises:
Further comprising pedometer data and report data of the smart shoe wearer, wherein the pedometer data and report data are obtained based on the moving speed data, the moving distance data, and the moving direction data.

In a smart shoe system,
An acceleration sensor for sensing acceleration data, a gyro sensor for sensing gyro data, and a smart shoe including a pressure sensor switched according to the step of the smart shoe wearer,
And a tracking data processor for processing motion data of the smart shoe wearer based on sensing data received from each sensor of the smart shoe,
Wherein the tracking data processing unit comprises:
Detects zero velocity data from the data sensed by the pressure sensor, removes the step noise of the first moving velocity data generated based on the sensed acceleration data and the gyro data based on the detected zero velocity data And acquires motion data of the smart shoe based on the first moving speed data from which the step noise has been removed.

A method for processing data in a smart shoe,
Receiving sensing data from the first sensors;
Detecting zero velocity data based on an operation of a second sensor;
Removing step noise of the sensing data received from the first sensors based on the detected zero velocity data;
Filtering the sensed data from which the step noise has been removed; And
And acquiring motion data of the smart shoe based on the filtered sensed data and a predefined threshold.

12. The method of claim 11,
The first sensors,
An acceleration sensor and a gyro sensor.

13. The method of claim 12,
Wherein the second sensor comprises:
And a pressure sensor which is switched according to a step of the smart shoe wearer.

14. The method of claim 13,
Wherein the motion data of the smart shoe comprises:
Wherein the data includes data on a moving distance, a moving speed, and a moving direction.

15. The method of claim 14,
Wherein moving speed data of the smart shoe motion data is corrected using zero velocity data detected from data sensed by the second sensor to remove step noise.

16. The method of claim 15,
The filtering may include:
Wherein the Kalman filtering method is used.

15. The method of claim 14,
Wherein the movement direction data is determined by applying a threshold value to the first movement direction data obtained by calculating the insole movement direction from the sensing data of the gyro sensor and the filtered second movement direction data. Way.

13. The method of claim 12,
Wherein the gravity is subtracted from the sensing data received from the first sensors and integrated, and the insole moving direction is calculated.

19. The method of claim 18,
Wherein the moving speed data is extracted from the calculated moving direction data and the gravity-subtracted integrated data.

15. The method of claim 14,
Wherein the motion data of the smart shoe comprises:
Further comprising stride data and report data of the smart shoe wearer, wherein the stride data and report data are obtained based on the moving speed data, the moving distance data, and the moving direction data.