KR101174729B1 - Ubiquitous healthcare system and multi-functional shoes having the same - Google Patents

Abstract

The present invention relates to a ubiquitous healthcare device and a multifunctional shoe having the same, by measuring an acceleration change according to an activity state in daily life through a multifunctional shoe having an acceleration sensor and a signal processing circuit, determining an activity state and determining an amount of activity. Predicting energy consumption can be estimated and emergency situations such as falls can be determined.
Ubiquitous healthcare device according to the invention, the acceleration sensor for measuring the acceleration information that changes according to the movement of the body; A low pass filter for removing high frequency noise components included in the output signal of the acceleration sensor; A high pass filter for removing the offset signal by the geomagnetic field included in the output signal of the acceleration sensor; An integrating circuit that sums and then integrates the acceleration signals from which the offset is removed using the high pass filter to obtain activity information for a specific time; An offset detection circuit that detects a position and a direction of the acceleration sensor by determining an offset signal included in an output signal of the acceleration sensor; A posture determination decoder for determining a position state of the acceleration sensor based on the information extracted from the offset detection circuit and generating posture information; A memory for storing the activity amount and posture information; And a microprocessor that receives the activity amount and attitude information from the integrating circuit and the attitude determination decoder, stores the activity amount and attitude information in the memory, and transmits the information stored in the memory to an external terminal through a communication module.

Description

UBIQUITOUS HEALTHCARE SYSTEM AND MULTI-FUNCTIONAL SHOES HAVING THE SAME}

The present invention relates to a ubiquitous healthcare (Ubiquitous Healthcare) device and a multifunctional shoe having the same, and more specifically, to measure the change in acceleration according to the activity state in daily life through the multifunctional shoe with an acceleration sensor and a signal processing circuit The present invention relates to a ubiquitous healthcare device and a multifunctional shoe having the same, which determine an activity state, estimate an activity amount, estimate energy consumption, and determine an emergency situation such as a fall.

With the recent economic growth, interest in health is increasing, and Ubiquitous Healthcare technology is emerging to extend from hospital-centered health care to perform continuous health care in daily life. Also, according to the emergence of healthcare technology, various researches for monitoring the health status in daily life more conveniently are being pursued.

Recently, in order to measure various activities of the human body more accurately and efficiently, techniques for attaching sensors to various parts of the human body and monitoring various posture changes and activity states have been introduced. Researches applying various signal processing techniques have been conducted.

In the artificial intelligence shoe and exercise amount measuring method (hereinafter, referred to as 'prior art 1') equipped with the controller of the Republic of Korea Patent No. 10-0702613, a walking sensor and a walking sensor which detect whether the user is walking by being attached to shoes And a controller for calculating a calorie consumption amount by receiving a signal from the gait sensor, wherein the gait sensor periodically generates an on-off signal when the shoe lands on the ground and falls off the ground according to the user's walking, and the controller generates a shoe. A body fat measurement unit having a detachable attachment to the body and having a conductive contact electrode for conducting a current to the user's body so as to measure the body fat of the user, and a walking derived by calculating a time difference between the on and off signals received from the walking sensor Calorie consumption calculated according to speed and measured stay calculated through the body fat measurement unit And it includes a display for displaying the amount.

According to the prior art 1, the user can display his or her exercise amount by displaying various values (calorie consumption amount, body fat amount, pulse rate) measured by the walking sensor, body fat measuring unit and pulse detection sensor mounted on the shoe body in real time. An intelligent shoe and a momentum measuring method which can be checked periodically are disclosed.

In the Internet exercise management device (hereinafter referred to as "prior art 2") using a shoe with a built-in momentum measurement sensor of the Republic of Korea Patent No. 10-0386788, a shoe with a momentum detection sensor and a signal by a wireless signal module is inputted A first terminal for receiving and transmitting to the outside, a second terminal for receiving a signal from the first terminal, connecting to the Internet and requesting information or data on exercise data, and identification information and exercise from the second terminal. A web server receiving data, a member database storing personal information of a member subscribing to the web server, an exercise amount database storing a member's exercise data transmitted from the second terminal to a web server, and the exercise amount database And an exercise amount calculation module for providing the user's exercise statistics information to the second terminal based on the stored exercise information.

According to the prior art 2, there is posted on the Internet exercise management device using a shoe with a built-in exercise sensor for continuously providing information, such as exercise time, calorie consumption, etc. to the user over the Internet.

In the shoe having a health diagnosis function of the Republic of Korea Patent Publication No. 10-2006-0037642 and a health diagnosis device having the same (hereinafter referred to as "prior art 3"), based on the temperature of the foot detected by the sensor installed in the insole of the shoe The present invention discloses a shoe that can diagnose the health of a shoe user and a diagnostic device that can be used in conjunction with a mobile terminal and a health care server.

In a shoe equipped with a walking sensor of the Republic of Korea Patent No. 10-0746504 (hereinafter referred to as 'prior art 4'), the insole located inside the shoe, the walking sensor formed on one side of the insole and the shoe or insole It is formed on one side and includes a display unit for receiving a signal from the walking sensor to display the number of walking, wherein the walking sensor is formed on both ends between the upper plate and the lower plate and one end is the first connection portion It is connected to the other end is a predetermined distance away from the second connection portion and a plurality of bent portion is formed so that the bent portion is extended by the external pressure acting on the upper plate and the other end is connected to the second connection portion have.

According to the prior art 4, the shoe is provided with a walking sensor that can accurately calculate the number of walking by the short circuit between the sensing unit formed in the bent portion and the second fold by forming a bent portion that can be spread by the external pressure Is disclosed.

In the intelligent shoe and the force information measuring method (hereinafter, referred to as "prior art 5") for force information measurement for walking test using the 6-axis force / moment sensor of the Republic of Korea Patent Registration 10-0941058, 6-axis force / moment The intelligent shoe for force information measurement for pedestrian experiment using sensor is an intelligent shoe structure for force information measurement for pedestrian experiment that simultaneously measures the force and moment applied to the sole of a person when walking. And a six-axis force / moment sensor installed at each of the and heel portions and connected to an external connection terminal provided at one side, and control means for storing and transmitting the signal detected by the six-axis force / moment sensor to the outside. .

According to the prior art 5, an intelligent shoe for measuring force information for a gait experiment for simultaneously measuring the force and moment applied to the heel and the heel of the sole when a person walks is disclosed.

In other existing applications, the acceleration measuring device uses a method of performing signal processing in a microprocessor by sampling an analog signal or a digital signal output from an acceleration sensor several tens or hundreds of times per second. This method has a lot of power consumption because the microprocessor must continue to operate to extract the useful information by processing the signal obtained through the data sampling and sampling.

The technical problem to be solved by the present invention to solve the above problems, by measuring the change in acceleration according to the activity state in the daily life through the multifunctional shoes with the acceleration sensor and signal processing circuit, determine the activity state and predict the amount of activity To estimate the energy consumption, and to present an ubiquitous health care device for determining an emergency situation, such as a fall, and a multifunctional shoe having the same.

In addition, another technical problem to be achieved by the present invention is to process the analog signal output from the acceleration signal into useful information through a low-power analog signal processing circuit and then input it once per second with a microprocessor to process the ubiquitous ultra small and low power The present invention provides a healthcare device and a multifunctional shoe having the same.

In addition, another technical problem to be achieved by the present invention is to sum the three-axis acceleration signal from which the offset is removed to collect the three-axis activity information according to the movement, by integrating it using the integration circuit having a specific time constant for a specific time The present invention provides a ubiquitous health care device for acquiring activity information and a multifunction shoe having the same.

In addition, another technical problem to be achieved by the present invention is a ubiquitous healthcare device for detecting the position or direction of the acceleration sensor by determining the offset signal on a specific axis of the acceleration using the signal output from the acceleration sensor and a multifunctional shoe having the same To present.

In addition, another technical problem to be achieved by the present invention is to present a ubiquitous healthcare device and a multifunctional shoe having the same by deriving a relationship between the signal passing through the integral circuit of the device and the kinetic energy.

The problem of the present invention is not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

As a means for solving the above technical problem, the invention described in claim 1, "Acceleration sensor is provided to measure the acceleration information that changes according to the movement of the body, and the high frequency noise component included in the output signal of the acceleration sensor A low pass filter to remove, a high pass filter to remove the offset signal by the geomagnetic field included in the output signal of the acceleration sensor, the acceleration signal from which the offset is removed using the high pass filter is added and integrated for a specific time. An analog signal processing circuit comprising an integrating circuit for acquiring the amount of activity information is provided to process the analog acceleration information output from the acceleration sensor and output it as an analog signal, and a microprocessor is provided for the integrating circuit of the analog signal processing circuit. Process analog signals from To determine an offset signal included in the output signal of the acceleration sensor groups and the offset detection circuit for detecting the position and direction of the acceleration sensor; An attitude determination decoder configured to determine a position state of the acceleration sensor based on the information extracted from the offset detection circuit, and to generate attitude information; A memory for storing the activity amount and posture information is provided so that the microprocessor receives the activity amount and attitude information from the integrating circuit and the attitude determination decoder and stores the activity amount and posture information in the memory and stores the information stored in the memory through a communication module. The microprocessor transmits to an external terminal, and the microprocessor determines the wearer's posture by using the output signal of the offset detection circuit and the posture determination decoder, and falls, fractures, etc. of the wearer when an offset signal is detected that cannot appear in normal daily life. Ubiquitous healthcare device, characterized in that for transmitting the alarm signal through the short-range communication module.

The invention as set forth in claim 2, wherein the integrating circuit and the attitude determination decoder obtain activity amount information and attitude information through sampling once per second and output the ubiquitous health to the microprocessor, respectively. Care device.

The invention according to claim 3 provides the ubiquitous healthcare device according to claim 1, wherein the acceleration sensor is any one of a single axis, a two-axis, and a three-axis acceleration sensor.

The invention as set forth in claim 4, wherein the communication module is a terminal capable of a universal network connection including a PC via wireless communication with a wireless communication receiver provided at a place including a home and an office. Ubiquitous healthcare device, characterized in that for transmitting the stored data.

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According to the invention of claim 5, the communication module according to claim 1, wherein the communication module: wirelessly transmits measured information (activity information and attitude information) by applying a short range wireless communication scheme including Bluetooth, Zigbee, and near infrared communication. Ubiquitous healthcare device characterized in that the transmission to the terminal having a communication receiver.

According to the invention of claim 6, "The ubiquitous healthcare device of claim 1, wherein: the relationship between the signal (ISVM) passed through the integration circuit 140 and the kinetic energy is derived by the following equation, energy consumption Ubiquitous healthcare device, characterized in that for estimating.

Here, y represents the kinetic energy kcal, and x is the signal ISVM which has passed through the integration circuit for estimating the kinetic energy.

Moreover, as another means for solving the technical problem mentioned above, the invention of Claim 8 provides "The multifunctional shoe provided with the ubiquitous healthcare device in any one of Claims 1-6."

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According to the present invention, by measuring the change in acceleration according to the activity state in the daily life through the multifunctional shoes with the acceleration sensor and signal processing circuit to determine the activity state and predict the amount of activity to estimate the energy consumption, emergency situations such as falls Can be judged.

In addition, the analog signal output from the acceleration signal is processed into a useful information through a low-power analog signal processing circuit, and then input into a microprocessor, thereby performing sampling or signal processing processes of several tens or hundreds of times per second. It is not necessary, a low power device is possible by detecting and processing information extracted from the analog signal processing circuit about once per second.

The effects of the present invention are not limited to those mentioned above, and other effects that are not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a block diagram of a ubiquitous healthcare device according to a preferred embodiment of the present invention
2 is a pose estimation graph using an acceleration signal
3 is a general energy quantification sequence
4 is a graph showing a relationship between a signal (ISVM) passing through an integrated circuit and energy consumption

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted, and similar parts are denoted by similar reference numerals throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Embodiment of ubiquitous healthcare device

1 is a block diagram of a ubiquitous healthcare device according to a preferred embodiment of the present invention.

As shown in FIG. 1, the ubiquitous healthcare device according to the present invention includes a microprocessor 100, a three-axis acceleration sensor 110, a low pass filter 120, a high pass filter 130, and an integrating circuit 140. ), An offset detection circuit 150, an attitude determination decoder 160, a flash memory 170, a wireless communication module 180, and a short range wireless communication module 190.

Here, the three-axis acceleration sensor 110 is an acceleration sensor for measuring the acceleration information that changes according to the movement of the body, and measures the gravity acceleration values of the three axes (x, y, z axis) in the tilted state, respectively. In the present invention, a three-axis acceleration sensor is shown as an example, but an acceleration measurement sensor such as a single axis or two axes may be used.

The low pass filter 120 removes high frequency noise components included in a signal output from the three-axis acceleration sensor 110. At this time, the high frequency noise component is generated according to the internal operation of the three-axis acceleration sensor 110 is included in the output signal.

The high pass filter 130 removes the offset signal by the geomagnetic field included in the signal output from the three-axis acceleration sensor 110. Since the signal output from the three-axis acceleration sensor 110 includes an offset signal by the geomagnetic field, the high pass filter to remove the acceleration signal by the geomagnetic field and extract only the acceleration component according to the activity of the body. By using the 130, the offset signal of the acceleration sensor due to the geomagnetic field is removed.

The integrating circuit 140 sums up the three-axis acceleration signal from which the offset is removed using the high pass filter 130 and integrates the analog signal (activity information) representing the amount of activity for a specific time by integrating with a specific time constant. Function to acquire. In this way, the integrating circuit 140 may collect the three-axis acceleration information according to the motion by summing the three-axis acceleration signals from which the offset is removed by using the high pass filter 130, which has a specific time constant. By integrating by using the integrating circuit 140, an analog signal representing an amount of activity during a specific time may be obtained by expressing the cumulative acceleration change.

In the conventional method, in order to analyze the acceleration signal, the signal output from the sensor needs to be sampled several tens or hundreds of times per second. However, in the present invention, the signal output from the three-axis acceleration sensor 110 is output to the low pass filter 120. And an analog signal processing circuit composed of a high pass filter 130 and an integrating circuit 140 to obtain information representing the amount of activity through sampling about once a second. Therefore, since the microprocessor 100 processes the signal by inputting the analog signal output from the integrating circuit 140 about once per second, the amount of work can be drastically reduced, thereby enabling low power driving.

The offset detection circuit 150 inputs a signal output from the three-axis acceleration sensor 110 that has passed through the low pass filter 120, and determines an offset signal from a specific axis of acceleration to determine the three-axis acceleration sensor ( It serves to detect the position or direction of 110. Since the signal output from the three-axis acceleration sensor 110 includes an offset signal by a geomagnetic field, it is possible to estimate the position or direction of the three-axis acceleration sensor 110 by determining the offset signal on a specific axis of acceleration. .

According to an exemplary embodiment of the present invention, an acceleration sensor (for example, a single axis, a two axis, a three axis acceleration sensor, etc.) is attached to a shoe, and the state of the wearer is detected by detecting an offset signal by a geomagnetic field output from the acceleration sensor. This can be done (normal standing posture, shoes flipped upside down, etc.). In particular, when an offset signal of an acceleration sensor that cannot appear in normal daily life is detected, it may be determined as a fall of a wearer, a fracture, or the like, and the alarm may be implemented through the short range communication module 190.

The posture discrimination decoder 160 is a circuit for generating posture information as an analog or digital signal by determining various postures (a state in which an acceleration sensor attached to a shoe is located) by using information extracted from the offset detection circuit 150. .

In the conventional acceleration measurement method, sampling is performed tens or hundreds of times per second through a microprocessor, and attitude information is extracted by applying a signal processing technique. However, in the present invention, the offset detection circuit 150 and the attitude determination decoder ( 160) enables posture discrimination through sampling once per second. As a result, it is possible to drive a low power by dramatically reducing the amount of work of the microprocessor 100.

The flash memory 170 stores the activity information measured by the integrating circuit 140 and the attitude information measured by the attitude determining decoder 160. As such, the measured activity information and posture information are stored in the flash memory 170 built in the device itself, thereby enabling analysis of activity information for a long time.

The wireless communication module 180 transmits data stored in the flash memory 170 to a terminal capable of accessing a universal network such as a PC through wireless communication with a wireless communication receiver provided at a place such as a home or an office. . As such, the wireless communication module 180 transmits data stored in the flash memory 170 to a terminal capable of accessing a universal network such as a PC without a separate line connection through wireless communication with a wireless communication receiver, thereby providing continuous information. Management and monitoring is possible.

The short range wireless communication module 190 transmits measured information (activity information and posture information) to a health terminal by applying low power short range wireless communication methods such as Bluetooth, Zigbee, near infrared, etc. to enable remote monitoring. . If short-range wireless communication is not possible, by storing the measured information through the flash memory 170 built therein and transmitting the stored information to the terminal connected to the wireless communication receiver using the wireless communication module 180, Continuous management and monitoring of activity information and attitude information is possible.

Posture discrimination using offset detection circuit and posture discrimination decode signal

In the present invention, the direction of the geomagnetic field and the position of the acceleration sensor are determined using the offset detection circuit 150, and the attitude change decoder 160 uses the information extracted from the offset detection circuit 150 to determine the change of attitude. Estimation is possible. At this time, the posture changes are standing or sitting (St. & Si.), Lying (ly .; Ly.), Lying-front (LyF.), And lying to the left. More than five pose categories are available: lying-left (LyL.) and lying-right (LyR.).

In order to determine the posture, it is possible to discriminate it by the decision tree by using the characteristic that the amplitude of each axis is changed by the difference of the inclination according to the direction of gravity of the acceleration sensor. same.

The postures other than St or Si shown in Table 1 are postures that do not occur during normal walking, and using Table 1, it is possible not only to detect posture change but also to estimate falls when abnormal posture is detected after a sudden acceleration change. An example of posture estimation using an acceleration sensor is shown in FIG. 2.

Energy Consumption Estimation Method Using Variation of Acceleration Signal

In the conventional method, the kinetic energy must be estimated after estimating the speed change from the acceleration in order to accurately estimate the energy consumption, and has to undergo a complicated calculation process such as the acceleration change of each axis and the initial velocity value (see FIG. 3). This computation is not suitable for low power devices such as the present invention.

In general, it is possible to predict the amount of activity by integrating the acceleration value from the acceleration sensor to obtain the velocity in the direction of each axis and substituting it into the kinetic energy formula. The equation for obtaining the kinetic energy is shown in Equation 1 below.

은 체중을 의미하며,

는 가속도 센서로부터 출력된 가속도 변화로부터 추정한 속도이다.here,

Means your weight,

Is the velocity estimated from the acceleration change output from the acceleration sensor.

In the present invention, a technique for estimating energy consumption is derived by deriving a relationship between the signal (ISVM) passing through the integrated circuit 140 of the device and the kinetic energy for easier estimation of the energy consumption.

In the present invention, as a result of correlation analysis between the estimated kinetic energy and the ISVM which can be easily calculated from the acceleration signal, the following equation is shown. At this time, the correlation coefficient between ISVM and kinetic energy was 0.9645.

여기서, y는 운동에너지(kcal)를 나타내고, x는 운동에너지를 추정하기 위한 적분 회로를 통과한 신호(ISVM)이다.

Here, y represents the kinetic energy (kcal), and x is the signal (ISVM) passed through the integration circuit for estimating the kinetic energy.

Finally, the relationship between the signal ISVM and the energy consumption passed through the integration circuit 140 is shown in FIG. 4.

When the ubiquitous healthcare device of the present invention is applied to a shoe, the insole, the sole, the heel, the heel, the shoe laces, the side, the rear, the front of the shoe can be built or installed.

The ubiquitous healthcare device of the present invention configured as described above and a multifunctional shoe having the same measure the acceleration change according to the activity state in daily life through the multifunctional shoe having the acceleration sensor and the signal processing circuit to determine the activity state and predict the amount of activity. By estimating the energy consumption, and detecting an emergency situation such as a fall by detecting a change in attitude of the acceleration sensor, the technical problem of the present invention can be solved.

Preferred embodiments of the present invention described above are disclosed to solve the technical problem, and those skilled in the art to which the present invention pertains (man skilled in the art) various modifications, changes, additions, etc. within the spirit and scope of the present invention. It will be possible to, and such modifications, changes, etc. will be considered to be within the scope of the following claims.

Although the present invention has been described for an example in which the ubiquitous healthcare device is embedded in the shoe, the present invention is not limited thereto, and the ubiquitous healthcare device is attached to the wearer's body or elsewhere to continuously manage and monitor the wearer's activity information and posture information. The same can be applied.

100: microprocessor 110: 3-axis acceleration sensor
120: low pass filter 130: high pass filter
140: integral circuit 150: offset detection circuit
160: attitude determination decoder 170: flash memory
180: wireless communication module 190: short-range wireless communication module

Claims (8)

It is equipped with an acceleration sensor to measure the acceleration information that changes according to the movement of the body,
A low pass filter for removing high frequency noise components included in the output signal of the acceleration sensor, a high pass filter for removing offset signals caused by a geomagnetic field included in the output signal of the acceleration sensor, and an offset using the high pass filter. An analog signal processing circuit comprising an integrated circuit for summing the removed acceleration signals and integrating them to obtain activity information for a specific time is processed, and processes the analog acceleration information output from the acceleration sensor and outputs it as an analog signal.
A microprocessor is provided to process an analog signal output from an integrated circuit of the analog signal processing circuit,
An offset detection circuit that detects a position and a direction of the acceleration sensor by determining an offset signal included in an output signal of the acceleration sensor; An attitude determination decoder configured to determine a position state of the acceleration sensor based on the information extracted from the offset detection circuit, and to generate attitude information; A memory for storing the activity amount and posture information is provided,
The microprocessor receives the activity amount and attitude information from the integrating circuit and the attitude determination decoder, stores the activity amount and attitude information in the memory, and transmits the information stored in the memory to an external terminal through a communication module.
The microprocessor determines the posture of the wearer based on the output signals of the offset detection circuit and the posture determination decoder, and determines that the wearer falls, fractures, etc. when an offset signal that cannot appear in normal daily life is detected. Ubiquitous healthcare device, characterized in that for transmitting an alarm signal through.
The method of claim 1,
The integrating circuit and the posture determination decoder obtain activity amount information and posture information through sampling once per second and output them to the microprocessor, respectively.
The method of claim 1,
The acceleration sensor is a ubiquitous healthcare device, characterized in that any one of a single axis, two-axis, three-axis acceleration sensor.
The communication module of claim 1, wherein the communication module comprises:
Ubiquitous healthcare device, characterized in that for transmitting the data stored in the flash memory to a terminal capable of a universal network connection, including a PC through a wireless communication with a wireless communication receiver provided in places including homes, offices.
The communication module of claim 1, wherein the communication module comprises:
Ubiquitous healthcare device, characterized in that for transmitting the measured information (activity information and attitude information) by applying a short-range wireless communication method including Bluetooth, Zigbee, near infrared communication to a terminal equipped with a wireless communication receiver.
The device of claim 1, wherein the ubiquitous healthcare device is:
Ubiquitous healthcare device, characterized in that the energy consumption is estimated by deriving the relationship between the signal (ISVM) and the kinetic energy passed through the integration circuit 140 by the following equation.

(Where y is the kinetic energy (kcal) and x is the signal (ISVM) passed through the integrating circuit to estimate the kinetic energy.)
delete The multifunctional shoe provided with the ubiquitous healthcare device in any one of Claims 1-6.

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