KR20120033526A - Detection device for biometric information and thereof system - Google Patents

Abstract

The present invention relates to a biometric information measuring apparatus and a measuring system using the same, the pulse sensor for measuring the pulse in contact with a predetermined body part; A motion sensor measuring an amount of exercise through the movement of the body; A converter for converting signals generated from the sensors into digital signals; A micro-controller unit (MCU) for analyzing the measurement signal received as a digital signal from the converter and calculating the biometric information; And an antenna capable of wirelessly transmitting and receiving the biometric information to an external terminal device.
By providing the present invention as described above, the user can not only measure easily while exercising, but also is convenient to be detachable and convenient to carry and carry, and the exercise ability information such as cardiopulmonary endurance information or biometric information to be measured more. It becomes effective and can obtain three-dimensionally.

Description

Biometric information measuring device and system using same {detection device for biometric information and pretty system}

The present invention relates to a biometric information measuring apparatus and a system thereof, and more particularly, to a portable device and a system capable of measuring cardiopulmonary endurance by measuring the amount of exercise simultaneously with the measurement of the pulse.

In recent years, the increase in obesity and physical strength have been intensified due to the lack of exercise of students, but since 1951, students' physical ability tests focused on motor skills such as quickness and speed are limited to simple measurement and recording, and there is a limit to follow-up. The government is shifting the physical capacity test to "comprehensive fitness evaluation and exercise prescription centering on health fitness" to promote the establishment of a system for promoting physical activity.

As a method of measuring 'health fitness', physical fitness of students is measured by using PAPS (Physical Activity Promotion System). Among them, 'cardiopulmonary endurance' which is representative of physical fitness is measured. There was a wireless type.

One is a method using a wired finger sensor, the other is a wireless heart rate measurement method using a chest belt. In the case of the wired type, the finger sensor method measures heart rate based on the arrival of infrared rays from the upper part of the sensor and arriving at the opposite sensor. Infrared transmission method measures by using the infrared transmission speed difference of blood vessels that expand and relax according to the change of blood flow in the body.

When exercise is performed, the blood flow increases to supply oxygen to the body, so the finger sensor method has the advantage of being easy to wear and hygienic. However, it is insufficient to obtain accurate measurement data because it is sensitive to blood flow changes. There are disadvantages. In addition, even if the blood flow in the arm changes through the movement of the arm because it affects a lot of heart rate.

Even with such small movements, the blood flow of our body changes a lot, so the heart rate increases and decreases repeatedly, which affects the body efficiency index, which makes it difficult to accurately measure the fitness level.

Secondly, the wireless heart rate monitor detects minute congestion in the body as the heart periodically performs movement, and detects it and converts it into a heart rate. In the case of a chest belt worn on the chest, the heart rate belt is worn closer to the heart to obtain an accurate heart rate. It's a way to get it.

In general, the method used by athletes. In the case of the wireless type, it is inconvenient to wear, hygiene is not good, and in the case of female students there is an inconvenience that can react sensitively to sexual harassment problems.

The wireless method has the advantage of being able to use both indoor and outdoor without limit of distance, and the advantage of measuring in parallel with the exercise from the outside, but it is expensive to carry the equipment and it is inconvenient to carry because the analysis equipment is large. have.

The problem of the present invention to solve the above problems is not only can be easily measured while the user is exercising, but also convenient to carry and carry, convenient to carry, exercise ability information or biological to be measured such as cardiopulmonary endurance of the athlete It is an object of the present invention to provide a biometric information measuring apparatus and a system capable of more effectively and three-dimensionally obtaining information.

A first aspect of the present invention for solving the above problems is a pulse sensor for measuring the pulse in contact with a predetermined body part; A motion sensor measuring an amount of exercise through the movement of the body; A converter for converting signals generated from the sensors into digital signals; A micro-controller unit (MCU) for analyzing the measurement signal received as a digital signal from the converter and calculating the biometric information; And an antenna capable of wirelessly transmitting and receiving the biometric information to an external terminal device.

Here, the pulse sensor is preferably an optical volume pulse wave detection sensor using a piezoelectric sensor or an optical sensor, the motion sensor is preferably any one of a geomagnetic sensor, an acceleration sensor and a gyro sensor, wherein the biometric information is the pulse and It is preferable that the cardiopulmonary endurance information calculated by analyzing the exercise amount.

In addition, preferably the biometric information measuring apparatus may further include a wearing band to be worn on the wrist or ankle.

The second aspect of the present invention provides a bioinformation system comprising: a pulse sensor for measuring a pulse by contacting a predetermined part of a body; A motion sensor measuring an amount of exercise through the movement of the body; A converter for converting signals generated from the sensors into digital signals; A micro-controller unit (MCU) for analyzing the measurement signal received as a digital signal from the converter and calculating the biometric information; And a biometric information measuring device including an antenna capable of wirelessly transmitting and receiving the biometric information to an external terminal device, and a mobile receiving the measured biometric information through a wireless network and displaying biometric information analysis data.

Herein, the wireless network is preferably an internet network or a short range wireless communication network, and the pulse sensor is preferably an optical pulse wave detection sensor using a piezoelectric sensor or an optical sensor, and the motion sensor is a geomagnetic sensor, an acceleration sensor, and a gyro sensor. It is preferable that it is either.

In addition, preferably, the biometric information may be cardiopulmonary endurance information calculated by analyzing the pulse and exercise amount, and the biometric information measuring device may further include a wearing band to be worn on the wrist or ankle.

By providing the present invention as described above, the user can not only measure easily while exercising, but also is convenient to be detachable and convenient to carry and carry, and the exercise ability information such as cardiopulmonary endurance information or biometric information to be measured more. It becomes effective and can obtain three-dimensionally.

In addition, the device is not only convenient to configure, but also has the advantage of being versatile, and the advantage of more accurately measuring the pulse and the amount of exercise, and more conveniently by measuring and displaying a variety of biometric or exercise information It can be monitored.

1 is a block diagram and an embodiment of a biosignal measuring apparatus according to the present invention;
2 is a view showing the composition of the optical volume pulse wave measured in the biometric information measuring apparatus according to the present invention,
3 is a view showing an application embodiment of the ubiquitous biometric information measuring system as another embodiment according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1 is a block diagram and an embodiment of a biosignal measuring apparatus 100 according to the present invention. As shown in FIG. 1, the biosignal measuring apparatus 100 of the present invention includes a pulse sensor 110 for measuring a pulse by contacting a predetermined body part; A motion sensor 130 that measures an amount of exercise through movement of the body; A converter for converting signals generated from the sensors into digital signals; A micro controller unit (MCU) for analyzing the measurement signal received as a digital signal from the converter and calculating the biometric information; And an antenna 170 capable of wirelessly transmitting and receiving the biometric information to an external terminal device.

Here, the pulse sensor 110 is a sensor that detects a pulse through a piezoelectric sensor optical sensor by contacting a predetermined part of the body such as a wrist or ankle. The pulse sensor 110 is preferably a photoplethysmography detection sensor using a piezoelectric sensor or an optical sensor.

When worn through a band or the like installed on the device to a specific part of the wrist or ankle, the pulse is measured through contact with the arterial part. As such, when worn on the wrist or ankle, the user can not only measure easily while exercising, but also have a convenient convenience to carry and carry.

In addition, the motion sensor 130 is a motion recognition sensor, and refers to a sensor that recognizes a movement or a position of an object. It is a complex sensor that includes various sensors such as geomagnetic sensor and acceleration sensor, and altimeter and gyro in one chip. It can be used for compass, pedometer, navigation function, location tracking in case of accidents such as fire or the elderly, or 3D stereoscopic game function that can enjoy the game according to the movement of the mobile phone.

As described above, the user's movement is sensed using the motion recognition sensor, and the detected data is converted into the amount of exercise to measure the relative amount of exercise within a specific time of the user. A person who exercises (hereinafter referred to as an `` athlete '') generally moves the arm or foot together, and such movement of the arm or foot will determine the speed and amount of movement in proportion to the exerciser's overall exercise amount. The exerciser's exercise amount can be measured.

When the exerciser wears the measuring device 100 according to the present invention as described above, such as a wrist or ankle, the pulse is measured in real time at the same time as the exercise, and the amount of exercise is measured through the hand movement or the foot movement of the athlete. It is possible.

That is, the amount of exercise of the user can be measured according to the degree of movement. The measuring method is an exercise amount when the intensity and number of times of movement recognized by the motion sensor 130 are calculated in a specific time unit. This momentum is not an absolute measure, but a relative measure can sufficiently measure the exerciser's exercise in correspondence with a specific parameter. In addition, it is possible to more effectively and three-dimensionally obtain exercise ability information or biometric information to be measured, such as cardiopulmonary endurance of the athlete.

Hereinafter, the principle of measuring the optical volume pulse wave in the biometric information measuring apparatus 100 according to the present invention, its configuration, and its operation will be described in detail.

As shown in FIG. 1, the configuration of the biometric information measuring apparatus 100 includes a pulse sensor 110 including a laser diode, a photo detector, and a temperature sensor, and a motion sensor that is a motion recognition sensor for measuring an amount of exercise through movement of the body. 130; An A / D converter for converting signals generated from the sensors into digital signals; A micro controller unit (MCU) for analyzing the measurement signal received as a digital signal from the converter and calculating the biometric information; And an antenna 170 capable of wirelessly transmitting and receiving the biometric information to an external terminal device.

More specifically, the configuration of the pulse sensor 110 for measuring the biological signal using the LED (LD) and PD is well shown in FIG. Photo-plethysmography is detected by using a near-infrared light source (LED or laser diode: LD) 111 and a photodiode 113 to measure the pulse. The signal measured by the photodetector 113 is subjected to a preprocessing process through an I / V converter for the optical volume pulse wave detection process. The preprocessed optical volume pulse wave signal is digitized by using the A / D converter 140, and the signal is transmitted to the microcontroller unit (MCU) 150.

2 is a view showing the composition of the optical volume pulse wave measured in the biometric information measuring apparatus 100 according to the present invention. As shown in FIG. 2, the optical volume pulse wave is one of the basic elements for diagnosing abnormalities of a living body. The measurement of light volume pulse wave takes advantage of changes in blood flow in living tissue as the heart beats. When the light is irradiated to the measurement site to measure the blood flow change, the AC component appears in the light transmitted through the measurement site. This signal is called the Photo Plethoysmogram (PPG). The vein can be obtained by calculating the number of peaks per minute of the PPG signal.

The light volume pulse wave attaches a light source and a photodetector to a tissue to be measured and measures the intensity of light that penetrates and scatters the skin. The light intensity measured at the photodetector varies with tissue composition and heart rate. As shown in FIG. 2, the waveform of a general optical volume pulse wave generated by the heartbeat can be divided into a DC component caused by living tissue, venous blood and non-pulsated arterial blood, and an AC component changed by pulsation of arterial blood. At this time, since the blood flow and volume change of blood vessels occurring in the tissue are the same as the change in the heart rate, the pulse state of the measurement target may be detected by extracting the AC signal due to the pulsation of arterial blood.

Looking at the measurement method in detail, PPG (optical volume pulse wave) is detected by using a near infrared light source (LED, LD) and a photodetector (PD). For PPG detection, the signal measured at PD is pre-processed by I / V conversion. Like the body temperature, the pre-processed PPG signal is converted into a digital signal using an A / D converter, and the converted signal is wirelessly transmitted in a pulse state from the microcontroller unit 150 (MCU). In the following, the object to be measured is livestock, and together with the body temperature of the livestock, PPG is one of the factors for diagnosing abnormalities of the living body, and the measuring method is as follows.

The measurement of PPG takes advantage of changes in blood flow that occur in living tissue (typically using the ear capillaries) in response to the heartbeat of the livestock. When the light is irradiated to the measurement site to measure the blood flow change, the AC component appears in the transmitted light. This component is called Photo Plethysmogram (PPG).

In addition, the pulse to be measured in the present invention can be obtained by calculating the number of peaks per minute of the PPG signal. Typical PPG waveforms due to heartbeat are shown in FIG. 2. It can be divided into DC component by biological tissue, venous blood and non-pulsating arterial blood, and AC component by arterial blood pulsation, and AC signal is extracted and analyzed.

The wavelength used as the light source mainly uses near infrared light, and generally corresponds to wavelengths of 660 nm and 940 nm. The light intensity calculation in the tissue to detect PPG uses Beer-Lambert's law.

(Where, I: transmission, reflected light intensity, I ₀ : incident light intensity, Ext: optical absorption coefficient of tissue, c: concentration of tissue, d: thickness of tissue)

In the case of the amount of light actually passing through the blood light, there is no change in diameter when passing through the venous blood. Therefore, the change in the amount of light is also constant. Therefore, it can be expressed as follows.

In the case of arterial blood, a minute change occurs in the thickness due to the heartbeat.

By solving the two equations together, the following equations for transmitted light can be obtained.

Therefore, the change in permeability according to the amount of arterial blood can be expressed as follows.

Simplifying by using the log on both sides, we can get the following equation.

By measuring the change or amount of transmission as described above, not only the arithmetic measurement value of the light volume pulse wave can be measured, but also the measurement of the pulse through the number of peaks per minute can be performed by adding various biological information.

In addition, as another embodiment of the present invention, it is preferable to further include a band on the measuring device 100 so that a sportsman can wear it on a wrist or ankle, and install the measuring device 100 on the back of the watch. It is also possible to use, as well as the measurement of the pulse with the usual use of the watch in the movement of measuring the pulse or biometric information while continuing to wear the device, as well as convenient and versatile advantage.

That is, the band is provided so as to be conveniently worn to be configured to be worn on the wrist or ankle stably. Such a band configuration has the advantage of being able to measure the pulse and the amount of exercise more accurately by measuring on the wrist or ankle with a large amount of activity and exercise in the human body.

3 is a view showing an application embodiment of the ubiquitous biometric information measuring system as another embodiment according to the present invention. As shown in FIG. 3, the apparatus includes a biometric information measuring apparatus 100 and a mobile terminal configured to communicate with the measuring apparatus 100 by wireless communication to display the biometric information in various ways.

Since the biometric information measuring apparatus 100 is the same as the configuration illustrated in FIG. 2, description thereof will be omitted below.

As shown in FIG. 3, the present invention measures a pulse and an exercise amount worn by an athlete on a wrist, and uses the measured signal in a short distance using a local area network or a wireless Internet network. Through the analysis and classification of the data through a cardiopulmonary endurance, such as a system configuration that can display biometric information or exercise ability information.

Here, the data communication between the measuring device 100 and the mobile terminal is preferably using short-range wireless communication, because the mobile terminal and the measuring device 100 are located in the adjacent distance, it is easy to configure the device. That is, it is preferable to use a short range wireless communication method such as Bluetooth or zigbee communication.

The zigbee communication method is one of the IEEE 802.15.4 standards and is a core technology for ubiquitous computing used in short-range communication markets such as intelligent home networks and buildings, and in industrial equipment automation, logistics, environmental monitoring, human interface, telematics, and military. Known.

In addition, it has a very small size, low power, and low price, and can be applied to an infrared TV, a remote control, a game console, a computer keyboard, a mouse, and the like. Easy to configure

In addition, the measuring device 100 and the mobile terminal may use wireless Internet communication such as YIFI. As the wireless LAN (YIFI) is recently used for various portable terminals, the measurement apparatus 100 and the mobile terminal communicate with each other through the wireless Internet, so that various biometric or exercise information information can be measured, displayed, and monitored more conveniently. It becomes possible.

In addition, recently connected to the measuring device 100 and the wireless Internet by using a smartphone that is used a lot, using a variety of application programs to analyze the biological information measurement data such as pulse and exercise amount received from the measuring device 100 Various biometric information or exercise ability information may be displayed by classifying and classifying.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with it will know easily.

100: biometric information measuring device, 110: pulse sensor, 111: laser diode,
113: photodetector, 115: artery, 117: vein, 140: A / D converter, 130: motion sensor,
150: microcontroller unit, 170: antenna

Claims (11)

Pulse sensor for measuring the pulse in contact with a predetermined body part;
A motion sensor measuring an amount of exercise through the movement of the body;
A converter for converting signals generated from the sensors into digital signals;
A micro-controller unit (MCU) for analyzing the measurement signal received as a digital signal from the converter and calculating the biometric information; And
A portable biometric information measuring device, characterized in that it comprises an antenna capable of wireless transmission and reception of the biometric information to an external terminal device.
The method of claim 1,
The pulse sensor is a portable biometric information measuring device, characterized in that the optical pulse wave detection sensor using a piezoelectric sensor or an optical sensor.
The method of claim 1,
The motion sensor is a portable biometric information measuring device, characterized in that any one of a geomagnetic sensor, an acceleration sensor and a gyro sensor.
The method of claim 1,
The biometric information is a portable biometric information measuring device, characterized in that the cardiopulmonary endurance information calculated by analyzing the pulse and exercise amount.
The method of claim 1,
The biometric information measuring device further comprises a wearing band to be worn on a wrist or ankle.
Pulse sensor for measuring the pulse in contact with a predetermined body part; A motion sensor measuring an amount of exercise through the movement of the body; A converter for converting signals generated from the sensors into digital signals; A micro-controller unit (MCU) for analyzing the measurement signal received as a digital signal from the converter and calculating the biometric information; And an antenna capable of wirelessly transmitting and receiving the biological information to an external terminal device.
A ubiquitous biometric information measuring system comprising a mobile receiving the measured biometric information through a wireless network to display biometric information analysis data.
The method of claim 6,
The wireless network is a ubiquitous biometric information measuring system, characterized in that the Internet network or a short-range wireless communication network.
The method of claim 6,
The pulse sensor is a ubiquitous biometric information measuring system, characterized in that the optical pulse wave detection sensor using a piezoelectric sensor or an optical sensor.
The method of claim 6,
The motion sensor is any one of a geomagnetic sensor, an acceleration sensor, and a gyro sensor. The method of claim 6,
The biometric information system is a ubiquitous biometric information measurement system characterized in that the cardiopulmonary endurance information calculated by analyzing the pulse and exercise amount.
The method of claim 6,
The biometric information measuring device further comprises a wearing band to be worn on the wrist or ankle ubiquitous biometric information measuring system.

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