KR101000467B1 - Wrist wearable type apparatus for measuring pulse and method for controlling the same - Google Patents

Abstract

PURPOSE: A pulse measuring device and a control method thereof are provided to accurately measure the pulse frequency of a user by minimizing the influence caused by the movement of the location of a pulse detection part. CONSTITUTION: A strap is equipped on the wrist of a subject. A pulse detection part is installed in the strap in order to detect a pulse signal. The pulse detection part comprises a light emitting device(210) and a light receiving device(220). The light emitting device irradiates light to the body of the subject. The light receiving device receives light reflected from the body of the subject. A controller computes the pulse frequency of the subject based on a pulse signal which is detected by the pulse detection part.

Description

Wrist wearable pulse measuring device and control method thereof {WRIST WEARABLE TYPE APPARATUS FOR MEASURING PULSE AND METHOD FOR CONTROLLING THE SAME}

The present invention relates to a wrist worn pulse rate measuring apparatus and a control method thereof.

Recently, with the improvement of living standards and the development of medical technology, the trend of aging in the world is becoming prominent. With the aging of the population, the prevalence of chronic diseases is increasing, and as another problem of the aging society, the increase of the elderly living alone and the loneliness history due to the declining family support due to nuclear familyization are important social issues. ) Is emerging.

Chronic diseases such as high blood pressure, diabetes, cerebrovascular disease and heart disease continue to increase. The causes are almost half of disease outbreaks caused by health behaviors of individuals and groups, especially diets and sports-related diets. Therefore, it is difficult to solve such chronic diseases by the biomedical model of modern medicine alone, and a health-promoting approach of removing the health risk factors through the improvement of lifestyle is required.

Care for the elderly living alone is done manually through activity sensors or visiting nursing. Recently, active care methods for measuring the vital signs such as pulse and prevent the health care and loneliness of the elderly living alone have emerged.

In addition, individual-level exercise therapy such as walking as a prophylaxis or replacement therapy for chronic diseases is being successfully performed. In such exercise therapy, a pedometer or exercise calorimeter is generally used to check the amount of exercise, but recently, a method of estimating the heart rate of an exerciser by measuring the pulse rate (heart rate) during exercise in real time is also proposed. It is becoming.

Pulse rate measurement methods include piezoelectric using a piezo element, magnetic using a magnetic tunnel tunnel (MTJ) element, pressing using a film type pressure sensor, impedance using a bioelectrical impedance, and optical. There is an optical system using a sensor, and in recent years, a wristwatch type pulse measuring apparatus that can be worn on a wrist or neck has been proposed.

According to the prior art, 1) a method of detecting a pulse by arranging a plurality of light receiving elements around one light emitting element, and 2) an optical sensor having the largest amplitude by arranging a plurality of light sensors comprising a pair of light emitting elements and light receiving elements The method of calculating the pulse rate by the signal of (3), the method of detecting the pulse by adjusting the pressure between the optical sensor and the skin by adjusting the amount of protrusion of the pulse detection unit attached to the optical sensor.

However, in the case of the method 1), the wrist size or blood vessel position is different according to the user, which may cause a problem in the reliability of the pulse measurement. Since it is necessary to compare the detection signals after storing the detection signals for all the light emitting devices of the LED, it takes a long time to select the optimal optical sensor and consumes a lot of current. There is a possibility that this may occur, the sensor is arranged in a line without considering the bending when mounting the wrist, there is a significant problem for the movement artifact (artifact) due to poor contact with the skin when wearing the wrist.

In the case of the 3) method, a separate operation member for adjusting the amount of protrusion of the pulse detection unit protrudes outward to form a mechanically complicated shape, and the pulse detection unit is integrally mounted to the wristwatch-type pulse measuring device. There is a problem that the position of the optical sensor is easily separated by the movement of the pulse measuring device when the hand moves.

In addition, in the conventional pulse measuring apparatus using light, there is a problem in that the power consumption is unnecessary if the power is not turned off because there is no function to determine whether the device is worn.

The present invention is to provide a wrist-worn pulse rate measuring device that can more accurately measure the pulse rate of the user by minimizing the influence of the positional movement of the pulse detection unit.

The present invention also provides a wrist worn pulse measuring device control method capable of estimating the pulse rate even when it is impossible to calculate the pulse rate by the pulse detection algorithm due to the movement of the user.

According to an aspect of the present invention, a belt (belt) wearable on the user's wrist, a light emitting device mounted on the belt and irradiated with light to the user's human body and mounted on the belt so as to be adjacent to the light emitting device to receive light reflected from the human body Provided with a light receiving element, there is provided a wrist worn pulse rate measuring device including a pulse detection unit for detecting a pulse signal with light, and a control unit for receiving a pulse signal from the pulse detection unit to calculate the pulse rate of the user.

The light emitting device may be disposed in plurality along the circumference of the light receiving device.

The plurality of light emitting devices may be arranged to be symmetrical about the light receiving device.

A plurality of light receiving elements having a plurality of light emitting elements arranged around the plurality may be arranged to be parallel to each other.

The wrist worn pulse measuring apparatus may further include a partition wall surrounding a plurality of light receiving elements and a plurality of light emitting elements so as to prevent interference of light.

The plurality of light receiving elements may be spaced apart from each other by a predetermined distance.

The wrist worn pulse measuring apparatus may further include a transparent mold that individually surrounds the surface of the light receiving element and the light emitting element.

Wrist wearing type pulse measuring device, one end is connected to the light emitting element, the other end is branched into a plurality of strands are arranged to face the human body, and one end is connected to the light receiving element, the other end is branched into a plurality of strands And further include a second optical fiber disposed to face the human body.

The strands of the first optical fiber and the strands of the second optical fiber may be alternately arranged.

The strand of the first optical fiber and the strand of the second optical fiber may be arranged in a lattice structure.

A plurality of light emitting devices and a light receiving device are disposed in a plural number to each other, and a plurality of first optical fibers and a second optical fiber which are branched into a plurality of strands and directed toward the human body are disposed in plural numbers to have the same number as the light emitting device and the light receiving device. Can be.

The other ends of the plurality of first optical fibers may be spaced apart from each other by a predetermined distance, and the other ends of the plurality of second optical fibers may be spaced apart by a predetermined distance from which the other ends of the plurality of first optical fibers are spaced apart from each other.

The wrist worn pulse rate measuring apparatus may further include a display unit mounted on the belt and displaying a pulse rate calculated by the controller.

The display unit may be mounted on the belt to be spaced apart from the pulse detection unit.

The belt may be made of a flexible material.

Wrist wearing pulse rate measuring apparatus may further include a buzzer mounted on the belt to generate a beep.

The wrist worn pulse measuring apparatus may further include a memory unit for storing pulse data corresponding to the pulse rate.

The wrist worn pulse measuring apparatus may further include a light emitting device, a light receiving device, and a power supply unit for supplying power to the controller.

The wrist worn pulse measuring device may further include an interface unit for connecting to an external device.

The wrist worn pulse measuring apparatus may further include a bioimpedance measuring unit measuring a bioimpedance of the user, and the controller may determine that the belt is worn on the wrist of the human body when the measured bioimpedance is smaller than the reference impedance.

The controller may adjust the intensity of light emitted from the light emitting device according to the magnitude of the pulse signal received from the pulse detector.

The wrist worn pulse measuring apparatus may further include a communication unit for transmitting pulse data corresponding to the pulse rate to an external server.

The controller may change the pulse mode to measure the pulse rate or the exercise mode to measure the amount of exercise for a predetermined time by the user's selection, and the communication unit may determine an external server when the measured pulse rate is out of the preset normal pulse rate range and the user pulse rate range. The emergency signal can be transmitted to the external server or the user can select the emergency signal to the external server.

The controller may calculate the amount of exercise for a predetermined time by calculating the amount of heat consumed by the human body using the pulse rate.

The wrist-worn pulse measuring apparatus may further include a switch unit for selecting a pulse mode or an exercise amount mode and selecting whether to transmit an emergency signal.

The switch unit may be formed on the display unit in a touch screen manner.

The control unit compares the pulse signal with a preset movement pattern signal, and estimates the pulse rate from the movement pattern signal when the coincidence of the pulse signal with respect to the movement pattern signal is greater than or equal to the reference value, and the communication unit sends an emergency signal to an external server when the coincidence is smaller than the reference value. Can transmit

The communication unit may receive an access signal from an external server, and transmit the pulse data to the external server when the access signal is received.

The wrist worn pulse measuring apparatus may further include a global positioning system (GPS) receiver mounted to the belt.

In addition, according to another aspect of the present invention, as the control method of the wrist-worn pulse measuring apparatus described above, determining whether the pulse rate can be calculated based on the state of the pulse signal, if the pulse rate can be calculated, the pulse detection Calculating the pulse rate by an algorithm, comparing the pulse signal with a preset movement pattern signal if the calculation of the pulse rate is impossible due to the user's movement, and matching the pulse signal with the movement pattern signal to a reference value or more. A wrist worn pulse measuring device control method comprising estimating a pulse rate from a movement pattern signal by an estimation algorithm is provided.

The wrist worn pulse measuring apparatus further includes a communication unit, and the method for controlling a wrist worn pulse measuring apparatus includes a case in which the calculated pulse rate is out of a preset normal pulse rate range and a user pulse rate range or a degree of coincidence of a pulse signal with respect to a movement pattern signal If smaller than the reference value, the method may further include transmitting an emergency signal to an external server through the communication unit.

The wrist worn pulse measuring apparatus further includes a bioimpedance measuring unit, and the method for controlling a wrist wearing pulse measuring apparatus may include: measuring, by a bioimpedance measuring unit, a user's bioimpedance before determining whether a pulse rate can be calculated; And when the measured bioimpedance is smaller than the reference impedance, the control unit may determine that the belt is worn on the user's wrist.

The wrist worn pulse measuring apparatus further includes a display unit, and the method for controlling a wrist worn pulse measuring apparatus may include, after calculating the pulse rate, depending on whether the calculated pulse rate is within a preset normal pulse rate range and a user pulse rate range. Displaying the status of the pulse rate as 'normal', 'attention' or 'emergency' through the display, and after estimating the pulse rate, displaying the status of the pulse rate as 'move' through the display. It may include.

The controller may be changed to a pulse mode for measuring the pulse rate or an exercise amount mode for measuring the amount of exercise for a predetermined time, according to a user's selection, and when the exercise amount mode is selected by the user, After calculating the pulse rate or estimating the pulse rate, the method may further include calculating an amount of exercise for a predetermined time by calculating the amount of heat consumed by the human body using the pulse rate.

The wrist worn pulse measuring apparatus further includes a display unit, and the method for controlling a wrist worn pulse measuring apparatus includes, after the step of calculating the pulse rate or estimating the pulse rate, when the exercise mode is selected by the user, through the display unit. The method may further include classifying the state of the pulse rate into 'normal', 'attention' or 'emergency' based on the preset maximum target pulse rate and the minimum target pulse rate.

The wrist worn pulse measuring apparatus may further include a switch unit for selecting a pulse mode or an exercise amount mode and selecting whether to transmit an emergency signal to an external server.

The wrist worn pulse measuring device control method includes, after the step of determining whether the pulse rate can be calculated, when the pulse rate cannot be calculated by changing the worn position of the belt, the light emitting device according to the magnitude of the pulse signal received from the pulse detection unit. The method may further include adjusting the intensity of light irradiated from the light source.

The wrist worn pulse measuring apparatus further includes a communication unit, wherein the wrist worn pulse measuring apparatus receives an access signal from an external server through the communication unit after calculating the pulse rate or estimating the pulse rate, and The method may further include transmitting pulse data to an external server through the communication unit according to the access signal.

According to an aspect of the present invention, it is possible to measure the pulse rate of the user more precisely by minimizing the effect of the positional movement of the pulse detection unit.

According to another aspect of the present invention, the pulse rate can be estimated even when the pulse rate cannot be calculated by the pulse detection algorithm due to the movement of the user.

1 is a view showing a wrist wearing state of the wrist-wearable pulse measuring device according to an embodiment of the present invention.
2 is a view showing an embodiment of a wrist worn pulse rate measuring apparatus according to an aspect of the present invention.
Figure 3 is a view showing a pulse detection unit of the wrist-worn pulse rate measuring device according to an embodiment of the present invention.
Figure 4 is a plan view showing a display unit and a switch of the wrist-worn pulse rate measuring device according to an embodiment of the present invention.
Figure 5 is a bottom view showing the pulse detection unit of the wrist-worn pulse rate measuring device according to an embodiment of the present invention.
Figure 6 is a cross-sectional view showing a pulse detection unit of the wrist-worn pulse rate measuring device according to an embodiment of the present invention.
Figure 7 is a bottom view showing the pulse detection unit of another wrist-worn pulse rate measuring device according to an aspect of the present invention.
Figure 8 is a cross-sectional view showing a pulse detection unit of another embodiment wrist worn pulse rate measuring apparatus according to an aspect of the present invention.
Figure 9 is a perspective view showing another embodiment of the wrist worn pulse rate measuring apparatus according to an aspect of the present invention.
Figure 10 is a flow chart showing an embodiment of a wrist worn pulse rate measuring device control method according to another aspect of the present invention.
Figure 11 is a flow chart showing the pulse measuring step of the wrist worn pulse rate measuring device control method according to another aspect of the present invention.
12 is a flow chart showing another embodiment of a wrist worn pulse rate measuring device control method according to another aspect of the present invention.

An embodiment of a wrist-worn pulse rate measuring apparatus and a method of controlling the same according to the present invention will be described in detail with reference to the accompanying drawings. In describing the accompanying drawings, the same or corresponding components are given the same reference numerals. And duplicate description thereof will be omitted.

1 is a view showing a wrist (H) wearing state of the wrist-worn pulse rate measuring apparatus 1000 according to an aspect of the present invention. 2 is a view showing an embodiment of a wrist worn pulse rate measuring apparatus 1000 according to an aspect of the present invention. 3 is a diagram illustrating a pulse detection unit 200 according to an exemplary embodiment of the wrist-worn pulse measuring apparatus 1000 according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the wrist worn pulse measuring apparatus 1000 according to the present exemplary embodiment is worn around the user's wrist H by the belt 100 so that the display unit 400 is positioned in the back of the hand. Inside the 100, the pulse detection unit 200 is disposed to face the radial artery or the ulnar artery.

As shown in FIGS. 1 to 3, the wrist worn pulse measuring apparatus 1000 may include a pulse detection unit 200 and a control unit including a belt 100, a light emitting device 210, and a light receiving device 220. 300, the memory unit 350, the display unit 400, the communication unit 500, the GPS receiver 550, the buzzer unit 600, the power supply unit 700, the interface unit 750, and the bioimpedance measuring unit 800 The switch unit 900 may be configured.

According to the present exemplary embodiment, the plurality of light emitting devices 210 may be disposed with respect to one light receiving device 220 having a larger surface area, or the first and second optical fibers 250 may be branched into a plurality of strands. By using, even when the position of the pulse detection unit 200 is slightly deviated from the radial artery or the ulnar artery due to the movement of the hand, the pulse signal can be efficiently detected to accurately measure the pulse rate of the user.

Hereinafter, with reference to FIGS. 1-6, each structure of this embodiment is demonstrated in detail.

The belt 100 may be worn on a user's wrist H as shown in FIG. 1, and the belt 100 may include a pulse detection unit 200, a control unit 300, and a memory unit as shown in FIG. 2. 350, the display unit 400, the communication unit 500, the GPS receiver 550, the buzzer 600, the power supply 700, the interface unit 750, the bioimpedance measuring unit 800, and the switch unit 900. ) May be mounted.

Such a belt 100 may be made of a flexible material. Accordingly, the belt 100 may not only be easily bent in accordance with the shape of the wrist H, but also be in good contact with the skin so that the flow does not occur after the belt 100 is worn on the wrist H.

The pulse detection unit 200 is configured to detect a pulse signal using light, and is mounted on the belt 100 to be adjacent to the light emitting device 210 and the light emitting device 210 that irradiate light to the human body of the user. And a light receiving device 220 mounted on the 100 to receive the light reflected from the human body.

The pulse detection unit 200 transmits the detected pulse signal to the control unit 300 as shown in FIG. 2, and the control unit 300 may receive the pulse signal and calculate a user's pulse rate.

As shown in FIG. 3, the pulse detection unit 200 includes a current controller 270, a baseline controller 275, a current-voltage converter 280, and an analogue-in addition to the light emitting device 210 and the light receiving device 220. The digital converter 290 may be further included.

The current controller 270 adjusts the light intensity of the light emitting device 210 when the light emitting device 210 and the light receiving device 220 are weak or not detected by the positional deviation from the radial artery or the ulnar artery. Can be.

Therefore, the belt 100 can stably measure the pulse even when the belt 100 is worn off the radial artery or the ulnar artery due to the inconvenience of wearing the radial condyle and the ulnar condyle.

The current controller 270 may be installed separately from the controller 300 as shown in FIG. 3, or may be integrally mounted in the controller 300.

The current-voltage converter 280 converts the current generated by the light receiving element 220 into a voltage, and the voltage is digitized by the analog-digital converter 290 and transferred to the controller 300. In this case, the analog-digital converter 290 may be included in the control unit 300.

The baseline controller 275 maintains the baseline variation of the signal according to the change of the light intensity received from the motion artifact or the light receiving device 220 at a constant level, thereby enabling the accurate operation of the analog-to-digital converter 290. .

In addition, although not shown in the drawing, the pulse detection unit 200 includes a data interface unit for transmitting pulse data corresponding to the pulse rate calculated by the controller 300 to the display unit 400, which will be described later, and a bioimpedance measuring unit 800, which will be described later. ) May be mounted.

2 and 3, the pulse detection unit 200 includes a display unit 400, a switch unit 900, a buzzer unit 600, a bioimpedance measuring unit 800, and an interface unit. 750, the power supply unit 700, the GPS receiver 550, the memory unit 350, and the case where the control unit 300 controls the communication unit 500 are provided as an example, but the pulse detection unit ( A separate detection control unit may be further provided in the 200 to detect the pulse signal by the detection control unit.

The relationship between the light emitting device 210 and the light receiving device 220, and the effects and effects thereof, will be described later with reference to FIGS. 5 and 6 after the rest of the configuration of the wrist-worn pulse measuring apparatus 1000 is described. .

The communication unit 500 is configured to transmit pulse data corresponding to the measured pulse rate or exercise amount data corresponding to the measured exercise amount to an external server through wired or wireless communication. That is, the communicator 500 transmits pulse data or exercise data to an external server, for example, a remote health care center, a control center, or the like by using an access point or personal computer or a mobile phone through Bluetooth or ZigBee wireless communication. Communicate regularly with back. In addition, by mounting the GPS receiver 550 on the belt 100, the position of the user may be accurately confirmed in real time.

The buzzer 600 is mounted on the belt 100 to generate various beeps according to the operation state of the wrist-worn pulse measuring apparatus 1000, and the memory unit 350 stores pulse data, exercise data, and the like. It is for the configuration.

The power supply unit 700 is a component for supplying power to each component such as the light emitting device 210, the light receiving device 220, the control unit 300, and the display unit 400. And a circuit for charging the battery.

The interface unit 750 may use a USB method. The external unit and the wrist may upgrade the operation program of the controller 300 or download various data stored in the memory unit 350 to an external device such as a personal computer. The wearable pulse measuring apparatus 1000 may be connected. The interface unit 750 may be connected to an external terminal for charging the battery of the power supply unit 700.

The bioimpedance measuring unit 800 checks whether the user wears the wrist-worn pulse measuring apparatus 1000 and measures the bio-impedance to control the power of the wrist-worn pulse measuring apparatus 1000 to ON or OFF. .

As such, since the operation of the wrist-wearable pulse measuring apparatus 1000 may be automatically stopped when the bio-impedance measuring unit 800 is not worn, unnecessary power consumption may be prevented, and the power supply unit 700 may be Life can also be increased.

4 is a plan view illustrating the display unit 400 and the switch unit 900 of the wrist-worn pulse measuring apparatus 1000 according to an exemplary embodiment of the present invention.

The display unit 400 is mounted on the belt 100 and may visually display the pulse rate calculated by the controller 300 as illustrated in FIG. 4.

That is, as shown in FIG. 4, the display unit 400 includes a wireless communication state display 421 indicating a wireless connection state with an access point or a personal computer and a display unit 400 indicating an exercise amount. The exercise amount display 422, the time display 423 indicating that the display 400 displays time, and the buzzer ON indicating whether or not the operation state of the wrist worn pulse measuring device 1000 is indicated by a beep. Built-in on / off status display 424, USB connection status display 425 indicating whether the wrist worn pulse measuring device 1000 is connected to another device via a USB port, and wrist worn pulse measuring device 1000 Charge status display 426 indicating that the battery is being charged, battery remaining charge display 427 indicating the consumption of the battery built in the wrist-worn pulse measuring apparatus 1000, and the display unit 400 display the time Time division display (428) for distinguishing whether the morning or afternoon of the time when the display, the display unit 400 displays the pulse rate, exercise amount, time to display the number (429), wrist-worn pulse measuring device 1000 When the user enters the gender and age of the information input display 431 is displayed, when the user does not wear the wrist-worn pulse measuring device 1000 and when the exact pulse rate cannot be displayed due to intense movement Wearing the non-wearing display 433, the movement display 432, and the wrist-worn pulse measuring apparatus 1000 to display the user's wrist when the pulse rate detected in the user's wrist (H) fluctuates within the user's normal pulse range Wearing a normal pulse indication 434 that flashes in synchronization with the pulse rhythm and the wrist-worn pulse measuring device 1000, the pulse rate detected by the user's wrist H is out of the normal pulse range. The pulse rate detected by the user's wrist (H) is vital by wearing a caution pulse indication (435) and a wrist worn pulse measuring device (1000) indicating that the user needs attention when the pulse rate is changed within the required pulse rate range. An emergency pulse indication 436 or the like may be formed to alert the user that emergency medical care is needed by reaching a condition that is dangerous to maintenance.

The display unit 400 may be mounted on the belt 100 to be spaced apart from the pulse detection unit 200. That is, the wrist-worn pulse measuring apparatus 1000 according to the present exemplary embodiment is not integrated with the display unit 400 and the pulse detection unit 200, but is disposed on the belt 100 so that the wrist is separated and separated from each other. Can be.

Accordingly, the pulse detection unit 200 can be minimized from the radial artery or the ulnar camellia, which are pulse measurement sites by the user's hand movement, and the contact with the pulse detection unit 200 and the skin can be maintained well.

On the other hand, the switch unit 900 sets or modifies the operation mode (pulse mode, momentum mode, time mode) of the wrist-worn pulse measuring device 1000, and the server of the external organization according to the user's selection in order to inform the emergency situation Emergency signals can be sent to

As shown in FIG. 4, the side of the display unit 400 may include a mode selection switch 910 for changing a mode setting and turning on / off the power of the wrist worn pulse measuring apparatus 1000. The pulse rate is displayed on the 400, the pulse rate switch 920 and the display unit 400, which can set the pulse rate range of the user and the buzzer 600 ON / OFF, etc., show the amount of exercise, and calculate the amount of exercise of the user. Momentum mode switch 930 for inputting the user's information to display the current time on the display unit 400, the time mode switch 940 for changing the current time, and emergency to the display unit 400 An emergency mode switch 950 is provided to indicate the pulse indication 436, to generate a warning sound, to confirm an abnormality of the emergency alarm system, and to notify the health care center or the control center of an emergency.

The operation method of each of these switches will be described below.

Whenever the mode selection switch 910 is briefly pressed, the display unit 400 sequentially displays pulse rate, exercise amount, and time. In this case, each display lasts 2 seconds and then disappears automatically.

In addition, by pressing and holding the mode selection switch 910 for three seconds, the power of the wrist worn pulse measuring apparatus 1000 may be turned on / off. This function can be used when the pulse mode, momentum mode and time mode are displayed and the display is turned off.

And using the mode selection switch 910, it is possible to change the user's pulse rate range and the buzzer 600 ON / OFF state in the pulse mode state, it is possible to change the user's gender, age settings in the exercise mode state In the time mode, you can change the current time setting.

When the pulse mode switch 920 is briefly pressed, the pulse rate is displayed on the display 400 for 5 seconds and then disappears automatically. In addition, when the pulse mode switch 920 is pressed for three seconds, the display unit 400 sequentially displays the user's minimum pulse rate, the user's maximum pulse rate, the buzzer unit 600 ON / OFF, and the setting change state release. At this time, the setting value may be changed by pressing the mode selection switch 910.

When the momentum mode switch 930 is briefly pressed, the momentum is displayed on the display 400 for 5 seconds and then the display disappears automatically. In addition, when the exercise mode mode switch 930 is pressed for 3 seconds, the display 400 displays the user's gender, the user's age 10, the user's age 1, and the setting change state release sequentially. At this time, the setting value may be changed by pressing the mode selection switch 910.

When the time mode switch 940 is briefly pressed, the current time is displayed on the display unit 400 for 5 seconds, and then the display disappears automatically. In addition, when the time mode switch 940 is pressed for 3 seconds, the display unit 400 sequentially displays AM / PM and 12/24 hour display 423 setting, time unit setting, minute unit setting, and setting change state release. . At this time, the setting value may be changed by pressing the mode selection switch 910.

When the emergency mode switch 950 is briefly pressed, an alarm sound sounds and the emergency pulse indication 436 of the display unit 400 blinks three times for two seconds. Accordingly, it is possible to check the abnormality of the emergency mode switch 950 and the abnormality of the emergency system with the health care center and the emergency control center.

That is, when the warning sound and the emergency pulse indication 436 do not appear, it means that a problem occurs in the emergency system with the wrist-worn pulse measuring device 1000 or the health care center and the emergency control center.

In addition, by pressing and holding the emergency mode switch 950 for 3 seconds, the health care center and the emergency control center may arbitrarily notify the health care center and the emergency control center, and the emergency mode switch 950 may be pressed once more for 3 seconds. Press to release the emergency arbitrarily.

The controller 300 may receive a pulse signal from the pulse detector 200 and calculate a pulse rate of the user by a pulse detection algorithm. In addition, the control unit 300 as well as the above-described memory unit 350, display unit 400, communication unit 500, GPS receiver 550, buzzer unit 600, power supply unit 700, interface unit 750 The bioimpedance measuring unit 800 and the switch unit 900 may be controlled to control the overall operation of the wrist worn pulse measuring apparatus 1000.

As an example, the controller 300 compares the bioimpedance measured by the bioimpedance measuring unit 800 with a preset reference impedance, and as a result of the comparison, when the bioimpedance is smaller than the reference impedance, the user's wrist H It is determined that the belt 100 is worn, thereby operating the pulse detection unit 200. On the other hand, when the bioimpedance is larger than the reference impedance, the power supply 700 is controlled to turn off the power of the wrist worn pulse measuring apparatus 1000.

The controller 300 may control the operation of the light emitting device 210 according to the magnitude of the pulse signal received from the pulse detector 200 to adjust the intensity of light emitted from the light emitting device 210. That is, the control unit 300 when the size of the pulse signal received from the pulse detection unit 200 is not large enough to calculate the pulse rate by wearing the wrist-worn pulse measuring apparatus 1000 on a portion other than the wrist H. Alternatively, the current controller 270 may control the operation of the light emitting device 210 to increase the intensity of the irradiated light.

In addition, the controller 300 may be changed to a pulse mode for measuring a pulse rate, an exercise amount mode for measuring an amount of exercise for a predetermined time, or a time mode for displaying a current time by a user's selection using the switch unit 900. By controlling such a mode change, the controller 300 controls the operations of the pulse detection unit 200, the display unit 400, the communication unit 500, and the like to measure the pulse rate and the amount of exercise and display them on the display unit 400, Pulse data and exercise data may be transmitted to an external server through the communicator 500.

More specifically, when the pulse mode is selected, the control unit 300 operates the pulse detection unit 200 to receive a pulse signal therefrom, calculates a pulse rate from the pulse signal by a preset pulse detection algorithm, and displays the display unit ( 400) or send to an external server.

In addition, even when the exercise amount mode is selected, the control unit 300 operates the pulse detector 200 to receive a pulse signal therefrom, and when the pulse rate can be calculated through the pulse signal, the calculated amount of heat consumed by the human body is calculated. The amount of exercise for a predetermined time may be calculated by calculating, and when the amount of exercise is calculated, the controller 300 may display it on the display 400 or transmit it to an external server.

Even if the pulse rate calculation is impossible because the received pulse signal is not in good condition, if the pulse signal is correlated with the preset motion pattern signal, the control unit 300 obtains the pulse rate from the motion pattern signal by a preset pulse estimation algorithm. Estimates and calculates the amount of exercise from the estimated pulse rate, can be displayed on the display unit 400, or transmitted to an external server.

As described above, the wrist-worn pulse rate measuring apparatus 1000 of the present embodiment may estimate the pulse rate through a pulse estimation algorithm even when the pulse rate cannot be calculated due to the violent movement of the user.

Under the control of the control unit 300, the communication unit 500 measures the normal pulse rate range in which the measured pulse rate is preset, and the user pulse rate range previously input using the switch unit 900 (from the minimum pulse rate to the maximum pulse rate). If all of the above, you can send an emergency signal to an external server to inform the user of the emergency. In addition, the communicator 500 may transmit an emergency signal to an external server under the control of the controller 300 when the coincidence of the pulse signal with respect to the movement pattern signal is smaller than the reference value. The communication unit 500 may arbitrarily transmit an emergency signal to an external server even by a user's selection using a switch.

Thus, according to the present embodiment, by changing the mode to the pulse mode, exercise mode, time mode by the user's selection using the switch unit 900 can monitor not only the pulse rate but also the exercise amount in real time, the pulse rate is in the normal range In case of departure, the wrist-worn pulse rate measuring apparatus 1000 may be implemented to notify an external organization of an emergency situation so as to quickly cope with an emergency situation in which the user is in contact.

Hereinafter, the above-described pulse detection unit 200 will be described in more detail based on the arrangement relationship between the light emitting device 210 and the light receiving device 220.

5 is a bottom view showing the pulse detection unit 200 of the wrist-worn pulse measuring apparatus 1000 according to an embodiment of the present invention. 6 is a cross-sectional view illustrating a pulse detection unit 200 according to an exemplary embodiment of the wrist-worn pulse measuring apparatus 1000 according to an exemplary embodiment.

5 and 6, a plurality of light emitting devices 210 are disposed with respect to one light receiving device 220 having a larger surface area, so that light emitted from the light emitting device 210 is more effectively received. Since it can be received through 220, even if the position of the pulse detection unit 200 due to the movement of the hand slightly out of the radial artery or the ulnar artery, it is possible to efficiently detect the pulse signal to accurately measure the user's pulse rate .

As illustrated in FIG. 5, the light emitting device 210 may be disposed in a plurality along the circumference of the light receiving device 220. That is, as illustrated in FIG. 5, four light emitting devices 210 may be disposed around the light receiving device 220 having a larger cross sectional area than the cross sectional area of the light emitting device 210. In addition, the light emitting devices 210 may be disposed to be symmetrical with each other in the upper and lower sides of the light receiving device 220.

As such, the small sized light emitting device 210 and the large sized light receiving device 220 are arranged in a multi-to-one manner, so that light emitted from the light emitting device 210 and reflected from the human body is more effectively received. It may be incident to the device 220.

As shown in FIG. 5, the light receiving elements 220 having the plurality of light emitting elements 210 arranged around the plurality may be arranged to be parallel to each other. That is, as illustrated in FIG. 5, one optical sensor unit including one light receiving device 220 and four light emitting devices 210 surrounding the light emitting device 220 is arranged in parallel in the horizontal direction.

In this case, two light emitting elements 210 arranged symmetrically up and down form a pair, and emit light sequentially from left to right, for example, among pulse signals obtained by sequentially emitting light of the light emitting element 210. The largest pulse signal among them can be adopted for the calculation of the pulse rate.

As the light emitting device 210 sequentially emits light, power consumption for operating the wrist worn pulse measuring apparatus 1000 may be reduced.

An optical sensor unit including one light receiving element 220 and four light emitting elements 210 surrounding the light sensor unit 220 is mounted on a circuit board 233c as illustrated in FIGS. 5 and 6, and the circuit board ( 233c is a cable 235 of a flexible material so that the pulse detection unit 200 is freely deformed according to the shape of the wrist H so that the skin of the wrist H and the light emitting device 210 and the light receiving device 220 are in good contact with each other. Is disposed on.

In this case, the plurality of light receiving elements 220 are spaced apart from each other by a predetermined distance, as shown in FIG. 5. That is, by arranging each of the above-described optical sensor units such that the interval between the light emitting elements 210 is such that the pulse detection unit 200 changes its shape according to the shape of the wrist H, thereby ensuring accurate bending. Enable pulse detection.

As shown in FIGS. 5 and 6, the partition walls 231 are surrounded by a circumference of each of the plurality of light receiving elements 220 and the plurality of light emitting elements 210 to prevent interference of light therebetween. As such, the partition wall 231 inserted between the light receiving device 220 and the light emitting device 210 and between the light emitting devices 210 may be formed of a material having good light blocking characteristics.

5 and 6, a transparent mold 232 having a high light transmittance is filled in the space between the light emitting device 210 and the light receiving device 220 and the partition wall 231 to receive the light receiving device 220. ) And the surface of the light emitting device 210 are individually wrapped.

5 and 6, in order to protect the light emitting device 210, the light receiving device 220, and the circuit component 234 from sweat or other moisture while considering light transmittance, the light emitting device 210 and the light receiving device. The transparent acrylic 237 is disposed under the device 220, and the opaque molds 238 and 232 are filled between the circuit components 234 in order to increase the impact protection and the waterproof effect from the outside.

A connector 236 is interposed between the circuit boards 233a and 233b for electrical connection between the circuit board 233a disposed at the end of the cable 235 and the circuit board 233b connected to the display unit 400. The flexible mold 239 is provided to protect the external shape of the pulse detection unit 200.

Hereinafter, another embodiment of the wrist worn pulse measuring apparatus 1000 according to an aspect of the present invention will be described.

7 is a bottom view showing the pulse detection unit 200 of another embodiment of the wrist-worn pulse measuring apparatus 1000 according to an aspect of the present invention. 8 is a cross-sectional view showing a pulse detection unit 200 of another embodiment of the wrist-worn pulse rate measuring apparatus 1000 according to an aspect of the present invention.

In the present embodiment, a larger area than the number of the light emitting device 210 and the light receiving device 220 is formed by using the first and second optical fibers 240 and 250 having the ends branched into the plurality of strands 242 and 252. By covering, even if the position of the pulse detection unit 200 is slightly deviated from the radial artery or the ulnar artery due to the movement of the hand, the pulse signal can be efficiently detected to accurately measure the pulse rate of the user. Hereinafter, this embodiment will be described based on the first and second optical fibers 250.

6 and 7, one end of the first optical fiber 240 is connected to the light emitting device 210, and the other end of the first optical fiber 240 is branched into a plurality of strands 242 and disposed to face the human body. One end of the 250 may be connected to the light receiving device 220, and the other end may be branched into the plurality of strands 252 to face the human body.

That is, as shown in FIGS. 6 and 7, each strand 242 of the first optical fiber 240 and each strand 252 of the second optical fiber 250 are alternately arranged, so that the overall grating structure of the matrix form One end of each of the first optical fiber 240 and the second optical fiber 250 is connected to the light emitting device 210 and the light receiving device 220, respectively.

6 and 7, the light emitting device 210, the light receiving device 220, the first optical fiber 240, and the second optical fiber 250 are each disposed in plural numbers so as to have the same number. In the case of the example is arranged four each, but is not necessarily limited thereto.

As shown in FIGS. 6 and 7, one light emitting device 210, one light receiving device 220, one first optical fiber 240, and one second optical fiber 250 may use one optical sensor unit. As described above, the optical sensor units may be spaced apart from each other to be freely deformable according to the shape of the wrist H.

That is, as illustrated in FIGS. 6 and 7, the other ends of the plurality of first optical fibers 240 may be spaced apart from each other by a predetermined distance, and the other ends of the plurality of second optical fibers 250 may also be formed of a plurality of first optical fibers. The other ends of the first optical fiber 240 may be spaced apart by a predetermined distance spaced apart from each other.

6 and 7, glass capillaries 262 are attached to each of the strands 242 and 252 of the first optical fiber 240 and the second optical fiber 250, and the first optical fiber 240 and The second optical fiber 250 is housed 261 by an epoxy or the like.

Hereinafter, another embodiment of the wrist worn pulse measuring apparatus 1000 according to an aspect of the present invention will be described.

9 is a perspective view showing another embodiment of the wrist worn pulse rate measuring apparatus 1000 according to an aspect of the present invention.

According to the present embodiment, the switch unit 900 is formed on the display unit 400 in a touch screen (410) manner, thereby presenting a wrist worn pulse measuring apparatus 1000 having a bracelet-like structure.

As shown in FIG. 9, unlike the above-described embodiment, the switch unit 900 of the touch screen 410 method is formed on the display unit 400, not the button switch unit 900. do.

In addition, the pulse detection unit 200 is mounted on the inner surface of the belt 100 in which flow is not generated in the wrist H due to comfortable wearing, flexible, and good contact force with the skin, as shown in FIG. 9.

In addition, in the present embodiment, since the user wears the wrist-worn pulse measuring apparatus 1000 and has a built-in memory unit 350 capable of storing a 24-hour pulse rhythm, the user can read the pulse data stored in the memory unit 350. Health care can be stored by wired or wireless communication to a personal computer and sent to the health care center via the Internet, or via an access point to a health care center using PSTN, the Internet, or powerline communications.

In addition, in case of an emergency, the user may notify the emergency control center or the health care center by wire or wireless communication, and a person who is allowed to access the user's pulse data may use a mobile phone remotely. You can always check your pulse status. That is, the communicator 500 may receive an access signal from an external server, for example, a personal computer or a mobile phone, and transmit the measured pulse data to an external server when the access signal is received in this way. A person who is allowed to access the pulse measuring apparatus 1000 may easily check a user's health state by transmitting an access signal to the communication unit 500 at regular intervals using a mobile phone or the like.

The user's location can be confirmed by the GPS receiver 550 mounted in the wrist-worn pulse measuring apparatus 1000.

Hereinafter, a method of controlling the wrist worn pulse measuring apparatus 1000 according to another aspect of the present invention will be described with reference to FIGS. 1 to 12.

10 is a flowchart illustrating an embodiment of a method for controlling the wrist worn pulse measuring apparatus 1000 according to another aspect of the present invention.

In the present embodiment, the present invention relates to a control method of the wrist-worn pulse measuring apparatus 1000. Since each configuration of the wrist-worn pulse measuring apparatus 1000 has been described in detail through the above-described embodiments, the following control method The explanation centers on itself.

According to the present exemplary embodiment, the bioimpedance measuring unit 800 measures the user's bioimpedance, and when the measured bioimpedance is smaller than the reference impedance, the controller 300 wears the belt 100 on the user's wrist H. Step S120, determining whether the pulse rate can be calculated based on the state of the pulse signal (S125), if the pulse rate can be calculated, calculating the pulse rate by the pulse detection algorithm (S130) According to whether the calculated pulse rate is within a preset normal pulse rate range and a user pulse rate range, displaying the status of the pulse rate through the display 400 to be divided into 'normal', 'attention' or 'emergency' ( S135, S140, S145, S155), if the calculated pulse rate is out of the preset normal pulse rate range and the user pulse rate range, the emergency signal to the external server through the communication unit 500 In the step (S160) of transmitting, if the calculation of the pulse rate is impossible due to the user's movement, the step of comparing the pulse signal with a preset movement pattern signal (S165), if the degree of coincidence of the pulse signal with respect to the movement pattern signal is greater than or equal to the reference value, the pulse Estimating the pulse rate from the movement pattern signal by an estimation algorithm, displaying the state of the pulse rate as 'movement' through the display unit 400 (S170), and when the coincidence of the pulse signal with respect to the movement pattern signal is smaller than the reference value In the present invention, a method for controlling the wrist-worn pulse measuring apparatus 1000 including transmitting an emergency signal to an external server through the communication unit 500 is provided.

Hereinafter, each step will be described in more detail.

First, by pressing the pulse mode switch 920 to set the user's pulse measurement mode (S110). The pulse mode switch 920 is pressed for 3 seconds to input user information such as age, gender, minimum / maximum pulse rate, and buzzer 600 ON / OFF (S115).

Subsequently, the pulse rate switch 920 is briefly pressed again to measure the pulse rate, but the step of checking whether the user wears the wrist worn pulse measuring apparatus 1000 by using the bioimpedance measurer 800 before that. (S120). The bioimpedance can be obtained by measuring a voltage by injecting a current of several tens of Hz to several Hz at a frequency of 10 to 50 kHz.

The higher the frequency of the injection current, the larger the amount of current can be safely injected, but increasing the frequency of the injection current causes an error because the effect of leakage capacity increases.

In the electrode configuration method used for the measurement of the bioimpedance, the two-electrode method using the same pair of electrodes for the injection of current and the measurement of the voltage and separate electrodes for the injection of current and the measurement of the voltage using two pairs of electrodes are used. And the four-electrode method.

As such, when the measured voltage is injected into the human body and the voltage is measured to be above a threshold level, the user determines that the user wears the wrist-worn pulse measuring apparatus 1000. Otherwise, the user wears the wrist-worn type. It is determined that the pulse measuring apparatus 1000 is not worn. In this case, to reduce power consumption of the power supply unit 700, one of the electrodes is used to serve as a contact electrode for turning on the power supply.

If it is determined by the above-described steps that the user is wearing the belt 100, try to measure the pulse of the user.

First, it is determined whether the user's pulse rate can be measured normally or whether the pulse rate is not normally measured due to the violent movement of the user (S125), and if the pulse rate can be measured normally, the user's pulse is measured according to the pulse measuring step. (S130). This pulse measuring step will be described later in more detail with reference to FIG. 11.

Subsequently, it is determined whether the pulse rate of the user measured according to the pulse measuring step is within a preset normal pulse rate range (S135).

If the measured pulse rate of the user is within the normal pulse rate range, the normal pulse display 434 on the display 400 flashes in synchronization with the user's pulse rhythm (S140), otherwise the measured pulse rate of the user is already set It is determined whether or not the pulse rate is in the range (S145).

If the user's pulse rate is within the range of the user's pulse rate is already set so that the caution pulse display 435 on the display 400 flashes in synchronization with the user's pulse rhythm (S150), otherwise the emergency pulse on the display unit 400 The display 436 flashes (S155) so that the buzzer 600 rings, and an emergency signal is sent to the health care center or the emergency control center server to inform the health care center or the emergency control center that the user is in an emergency. To be transmitted (S160).

On the other hand, if the pulse measurement is not normally possible in step S125, it is determined whether the pulse signal received through the pulse detection unit 200 is consistent with the user's movement pattern signal (S165).

If the match of the pulse signal to the motion pattern signal is equal to or greater than the reference value, the user's motion pattern signal is analyzed to estimate the pulse rate from the motion pattern signal by a pulse estimation algorithm, and the motion display 432 is displayed on the display 400. To blink (S170).

If the recognition of the pulse signal to the movement pattern signal is less than the reference value, pattern recognition is not possible, the emergency pulse indication 436 flashes on the display and the buzzer 600 rings, and the health care center or emergency control center Notify that the user is in an emergency situation (S160).

In addition, in the method for controlling the wrist-worn pulse measuring apparatus 1000 according to the present embodiment, after calculating the pulse rate (S130) or estimating the pulse rate, the access signal is received from an external server through the communication unit 500. And transmitting the pulse data to an external server through the communication unit 500 according to the access signal.

That is, when the person who is allowed to access the wrist-worn pulse rate measuring apparatus 1000 transmits an access signal to the communication unit 500 at arbitrary intervals through an external server such as a personal computer or a mobile phone, arbitrarily or through setting, The access signal is received from an external server through the communication unit 500, and the pulse data is transmitted to the external server through the communication unit 500 again.

Accordingly, even if a person who is allowed to access the user's pulse data is at a remote location, the user's health status can be easily checked by always checking the user's pulse state using a mobile phone or the like.

Hereinafter, referring to FIG. 11, a pulse measuring step of an embodiment of a method for controlling the wrist worn pulse measuring apparatus 1000 according to another aspect of the present invention will be described.

11 is a flowchart illustrating a pulse measuring step of an embodiment of a method for controlling the wrist-worn pulse measuring apparatus 1000 according to another aspect of the present invention.

Pulse measurement step of the method for controlling the wrist-worn pulse measuring apparatus 1000 according to the present embodiment, as shown in Figure 11, the current-voltage conversion to convert the current flowing through the light receiving element 220 to a voltage and amplified; Amplification step (S210), analog-to-digital conversion step (S220) for converting the detected analog voltage into a digital signal, digital bandpass filtering step (S230) for removing signal components other than the pulse frequency from the digital signal, pulse detection unit ( The light emitting device 210 sequentially emits light of the light emitting device 210 of each light sensor unit (S240), and the analog signal inputted to the analog-to-digital converter 290 bases 1/2 of the power supply voltage on the base line. The baseline control step (S250), which causes the analog-to-digital conversion to be performed accurately, and determines whether a pulse signal, that is, a photoplrthysmography (PPG) signal can be detected. If not possible, controlling the current of the light emitting device 210 to increase the light intensity (S260), executing the artifact removal algorithm to remove the motion artifact (S270), algorithm for detecting the pulse rate from the PPG signal from which the artifact is removed An execution step S280 is included.

Hereinafter, each step will be described in more detail.

First, the current-voltage conversion amplification step S210 using the light receiving element 220 and the OP-AMP is performed. After the light emitted from the light emitting device 210 and reflected by the human body is received by the light receiving device 220 and converted into a current, the converted current is converted into a voltage by the OP-AMP and amplified. This step can also be performed by transforming into current-frequency conversion.

Next, the analog-to-digital converter (S220) is converted to the analog-to-digital converter 290, and digital bandpass filtering (S230) is performed using an IIR filter or an FIR filter.

Subsequently, the light emitting element 210 is sequentially emitted from the light emitting element 210 and the light receiving element 220 of each light sensor unit of the pulse detection unit 200 to store respective pulse signal values, and then compare the values. The pair of light emitting device 210 and the light receiving device 220 having the largest value is found (S240). At this time, in order to reduce the power consumption of the power supply unit 700, the light emitting device 210 is driven by a short pulse.

Next, the baseline controller 275 controls the output signal of the current-voltage conversion amplifier circuit from the digital data value by using the GPIO port so that the baseline is adjusted to 1/2 level of the power supply voltage (S250).

Next, it is determined whether or not the PPG signal is detected to be above a desired level (S270) to control the amount of current of the current amplifying circuit or the current limiting circuit of the light emitting device 210 (S260). That is, when it is impossible to calculate the pulse rate from the detected pulse signal, that is, the PPG signal due to the change of the wearing position of the belt 100, the current of the light emitting device 210 according to the magnitude of the pulse signal received from the pulse detector 200. The current amount of the amplifying circuit or the current limiting circuit is increased to adjust the intensity of light emitted from the light emitting element 210.

Next, an artifact removal algorithm is performed to remove artifacts due to movement of the user's arm or lack of contact pressure between the skin and the sensor from the detected PPG signal (S280). At this stage, it is possible to use filter techniques or wavelets, including adaptive filters, moving average filters, etc. to remove artifacts. In addition, a periodic moving average filter (PMAF) using the pseudo periodicity of the PPG signal may be used.

Subsequently, a peak is detected from the PPG signal from which the artifact is removed, or a pulse is detected through the first and second derivatives of the PPG signal (S290). As an example of the pulse detection algorithm, the peak detection changes the slope from (+) to (-) within a predetermined interval (for example, 0.25 seconds to 1.49 seconds) where the pulse period is expected to be considered in consideration of the pulse period of the user. For example, a point corresponding to a range of thresholds (threshold value 1 and threshold value 2) where the peak size is experimentally determined is sequentially stored with respect to the peaks. By comparing the magnitudes of the stored peaks, the period T is recognized as the largest interval between the front and rear bones among the peaks within 95% of the largest peak value. Dividing this period T by 60 can yield a pulse rate per minute.

Hereinafter, another embodiment of a method for controlling the wrist worn pulse measuring apparatus 1000 according to another aspect of the present invention will be described with reference to FIG. 12.

12 is a flowchart illustrating another embodiment of a method for controlling the wrist worn pulse measuring apparatus 1000 according to another aspect of the present invention.

According to the present exemplary embodiment, the bioimpedance measuring unit 800 measures the user's bioimpedance, and when the measured bioimpedance is smaller than the reference impedance, the controller 300 wears the belt 100 on the user's wrist H. Step S335, determining whether the pulse rate can be calculated based on the state of the pulse signal (S340), if the pulse rate can be calculated, calculating the pulse rate by the pulse detection algorithm (S345) ), And displaying the state of the pulse rate through the display unit 400 divided into 'normal', 'caution' or 'emergency' based on the preset maximum target pulse rate and minimum target pulse rate (S350, S355, S365, (S370, S375), calculating the amount of exercise for a predetermined time by calculating the amount of heat consumed by the human body using the pulse rate (S410, S420, S430, S440, S450), the calculation of the pulse rate due to the user's movement If it is impossible, comparing the pulse signal with a predetermined movement pattern signal (S380), and if the degree of coincidence of the pulse signal with respect to the movement pattern signal is greater than or equal to the reference value, estimating the pulse rate from the movement pattern signal by a pulse estimation algorithm (S385, S390), if the degree of coincidence of the pulse signal to the movement pattern signal is less than the reference value, the wrist-worn pulse measuring device 1000 control method comprising the step of transmitting an emergency signal to the external server through the communication unit 500 (S395) This is presented.

Hereinafter, each step will be described in more detail.

First, the user sets the exercise amount measurement mode by pressing the exercise mode mode switch 930 to set the target pulse rate during exercise and measure the exercise amount (S310). The user presses and holds the exercise amount mode switch 930 for 3 seconds to input user information such as age, gender, and weight of the user (S315) and selects an exercise purpose (S320).

Here, the exercise intensity according to the exercise purpose is shown in Table 1. In the early stages of exercise, walking, running (jogging), swimming, biking, etc., which are easy to measure the intensity of exercise, are effective. It is a way.

Exercise intensity according to exercise purpose Exercise purpose Exercise intensity Professional training High strength, more than 70% of maximum exercise capacity Stamina Medium intensity, 50 to 70% of maximum exercise capacity Obesity management Low to medium intensity, 40 to 60% of maximum exercise capacity Exercise beginner Low intensity, 40-50% of maximum exercise capacity

Exercise intensity is often expressed as a percentage of maximum exercise capacity (maximum oxygen intake) for aerobic exercise to the extent that it feels difficult to exercise. In other words, what percentage of the body's ability to exercise the maximum amount of exercise or whether you are currently doing. The maximum exercise ability measurement according to the present embodiment determines the exercise intensity in relation to the maximum pulse rate and the target pulse rate.

The exercise intensity for improving cardiopulmonary endurance, which is closely related to adult disease, should be determined to be 60 to 75% of the maximum exercise capacity in healthy adult men. 40 to 65% is suitable. The exercise intensity is determined by the target pulse rate and the exercise intensity for each individual.

Next, the target pulse rate is calculated by Karvonen's formula (S325). That is, as shown in Equation 1, the target pulse rate is determined.

Equation 1 Target pulse rate = (maximum pulse rate-resting pulse rate) X exercise intensity (%) + resting pulse rate

The maximum pulse rate (times / minute) is 220 (man) or 260 (woman) minus the age of the person exercising. The resting pulse rate is usually measured as soon as possible in the morning or after taking a minimum of 20 minutes of rest (activity).

While it is accurate to continuously measure and average for several days, in the present embodiment, the resting pulse rate (times / minute) is obtained by multiplying the pulse rate by a factor of 6 by measuring the pulse rate for 10 seconds after the user has stabilized. For example, if a 20-year-old male has a resting pulse rate of 80 beats / minute and exercise for obesity management, the exercise intensity becomes 40 to 60% of the maximum exercise capacity according to (Table 1). Become together.

Target pulse rate = [(220-20)-80] X 0.4 + 80 = 128 revolutions / minute

Target pulse rate = [(220-20)-80] X 0.6 + 80 = 200 beats / minute

In other words, the target pulse rate ranges from a minimum of 128 times / minute to a maximum of 200 times / minute.

Subsequently, if the momentum mode switch 930 is briefly pressed again to start the exercise (S330), the pulse rate of the user is measured, but before the user wears the wrist-type pulse measuring device (eg, the bioimpedance measuring unit 800). In operation S335, the electronic device may determine whether the user wears 1000.

If it is determined that the user is wearing the belt 100 by the above-described steps, the user's pulse measurement is attempted.

First, it is determined whether the pulse signal received from the pulse detection unit 200 is in good condition so that the normal pulse measurement is possible, or the pulse signal is not good due to the motion artifact or lack of contact pressure. If it is possible to accurately measure the pulse according to the determination result (S340), the pulse rate of the user is measured by the pulse detection algorithm (S345).

Next, it is determined whether or not the measured pulse rate of the user is within the range of the calculated target pulse rate (S350). If the user's pulse rate is within the target pulse rate range, the normal pulse indication 434 on the display 400 blinks in synchronization with the user's pulse rhythm (S355) and the buzzer 600 rings at the same time.

And if the measured pulse rate of the user is not within the range of the target hundred heart rate, it is determined whether or not the minimum target pulse rate (S365). If the measured pulse rate of the user is less than the minimum target pulse rate, the caution pulse display 435 on the display 400 is synchronized with the user's pulse rhythm flickers (S370) and at the same time the buzzer 600 rings, the maximum target pulse rate If exceeded, the emergency pulse display 436 on the display 400 flashes in synchronization with the user's pulse rhythm (S375) and the buzzer 600 rings at the same time.

After that, if the user continues the exercise (S360) to continue the exercise to perform the step S335 again, if the end of the exercise to proceed to step S430 to provide information for calculating the total exercise time Do it.

On the other hand, if the pulse rate is measured through the step S345, the amount of oxygen consumption of the user is calculated using the measured pulse rate to measure the exercise amount (S410). Here, the amount of oxygen consumed by the user is calculated by a program embedded in the controller 300 according to the user's pulse rate per minute, the user's information, and the purpose of exercise.

Next, the amount of heat consumed by the user during exercise is calculated using the calculated amount of consumed oxygen (S420). In general, since the pulse rate is linearly related to the amount of oxygen required by a person to exercise, and the required amount of oxygen is linearly related to the amount of heat oxidized in the body, the amount of heat consumed is calculated using this relationship.

In other words, the user consumes calories by exercising and consumes oxygen. Therefore, the more calories consumed per unit time and unit weight, the greater the amount of oxygen required per unit time and unit weight. The amount of heat consumed by the user during exercise is calculated by a program embedded in the controller 300.

Thereafter, when the user ends the exercise, the total exercise time is calculated (S430), and the total calorie consumed during the exercise is calculated by multiplying the time measured in S430 by the calorie consumed by the user during the exercise calculated in S420 ( In operation S440, the value is displayed on the numeric display 429 by the display unit 400.

The calculated data on the pulse rate and total calorie consumption of the user are stored in the memory unit 350 under the control of the controller 300 or transmitted to the personal computer or the access point through the communication unit 500 by wire or wireless communication. It is sent to health care center or emergency control center.

On the other hand, if the pulse measurement is not possible according to the result of step S340, the pulse signal coming from the pulse detection unit 200 is compared with the user's movement pattern signal (S380). That is, in this step, the correlation between the detected pulse signal and the user motion pattern signal stored in the memory unit 350 or the external memory is compared. When the degree of agreement between the detected pulse signal and the predefined motion pattern signal is greater than or equal to the reference value, In operation S390, an algorithm for estimating a pulse rate from a corresponding motion pattern signal is performed by analyzing a user's motion pattern (S385).

On the contrary, if the degree of coincidence between the pulse signal and the movement pattern signal is smaller than the reference value according to the comparison result, it is determined as an emergency situation and the emergency pulse indication 436 flashes on the display unit 400 and a buzzer sounds at the same time. To the health care center or emergency control center (S395) or check whether the wrist-worn pulse measuring apparatus 1000 is correctly worn.

As mentioned above, although an embodiment of the present invention has been described, those of ordinary skill in the art may add, change, delete or add components within the scope not departing from the spirit of the present invention described in the claims. The present invention may be modified and changed in various ways, etc., which will also be included within the scope of the invention.

1000: wrist worn pulse measuring device
H: wrist
100: belt
200: pulse detection unit
210: light emitting element
220: light receiving element
231 partition walls
232: transparent mold
233a, 233b, 233c: circuit board
234: circuit components
235: cable
236: connector
237: transparent acrylic
238: opaque mold
239: flexible mold
240: first optical fiber
242: strand
250: second optical fiber
252: strand
261: housing
262 glass capillary
270: current controller
275: baseline control unit
280: current-voltage converter
290: analog to digital converter
300: control unit
350: memory
400: display unit
410: touch screen
421: wireless communication status display
422: momentum display
423: time display
424: buzzer ON / OFF status display
425: Display USB connection status
426: Display charge status
427: Battery level indicator
428: time separator
429: number display
431: Information input display
432: movement indicator
433: non-wear indication
434: normal pulse indication
435: Caution pulse indication
436: emergency pulse indication
500: communication unit
550: GPS receiver
600: buzzer
700: power supply
750: interface unit
800: bioimpedance measuring unit
900: switch unit
910: mode selector switch
920 pulse mode switch
930: momentum mode switch
940: time mode switch
950: emergency mode switch

Claims (38)

A belt wearable on a user's wrist;
A light emitting element mounted on the belt for irradiating light to the human body of the user and a light receiving element mounted on the belt so as to be adjacent to the light emitting element to receive light reflected from the human body, thereby detecting a pulse signal with light; Detection unit; And
A control unit for receiving the pulse signal from the pulse detection unit and calculating a pulse rate of the user;
The light emitting device is disposed in plurality along the circumference of the light receiving device,
The plurality of light emitting devices are arranged to be symmetrical about the light receiving device,
The plurality of light receiving elements having the plurality of light emitting elements arranged around the plurality are arranged in parallel with each other,
And a partition wall surrounding a periphery of each of the plurality of light receiving elements and the plurality of light emitting elements to prevent interference of light.
delete delete delete delete The method of claim 1,
The plurality of light receiving elements are wrist-worn pulse rate measuring device, characterized in that spaced apart from each other by a predetermined distance.
The method of claim 1,
Wrist wearing type pulse measuring device further comprising a transparent mold to individually wrap the surface of the light receiving element and the light emitting element.
A belt wearable on a user's wrist;
A light emitting element mounted on the belt for irradiating light to the human body of the user and a light receiving element mounted on the belt so as to be adjacent to the light emitting element to receive light reflected from the human body, thereby detecting a pulse signal with light; Detection unit; And
A controller configured to receive the pulse signal from the pulse detector and calculate a pulse rate of the user;
A first optical fiber having one end connected to the light emitting device and having the other end branched into a plurality of strands to face the human body; And
One end is connected to the light-receiving element, the other end is a wrist-worn pulse rate measuring device comprising a second optical fiber arranged to be branched into a plurality of strands toward the human body.
The method of claim 8,
The strand of the first optical fiber and the strand of the second optical fiber are alternately disposed with each other, the wrist-worn pulse rate measuring device.
10. The method of claim 9,
The strand of the first optical fiber and the strand of the second optical fiber is a wrist worn pulse measuring device, characterized in that arranged in a lattice structure.
The method of claim 10,
The light emitting device and the light receiving device are each provided in plural number to have the same number,
The first optical fiber and the second optical fiber which is branched into a plurality of strands and directed toward the human body are disposed in plural numbers so as to have the same number as the light emitting element and the light receiving element.
The method of claim 11,
The other ends of the plurality of first optical fibers are spaced apart from each other by a predetermined distance,
The other ends of the plurality of second optical fibers are wrist-worn pulse rate measuring device, characterized in that the other ends of the plurality of first optical fibers are spaced apart by a predetermined distance from each other.
The method according to claim 1 or 8,
And a display unit mounted to the belt and displaying the pulse rate calculated by the controller.
The method of claim 13,
The display unit is a wrist worn pulse rate measuring device, characterized in that mounted on the belt to be spaced apart from the pulse detection unit.
The method according to claim 1 or 8,
The belt wearable pulse measuring apparatus, characterized in that the belt is made of a flexible material (flexible).
The method according to claim 1 or 8,
Wrist-mounted pulse rate measuring device further comprises a buzzer portion mounted on the belt to generate a beep.
The method according to claim 1 or 8,
Wrist wearing pulse rate measuring device further comprises a memory for storing the pulse data corresponding to the pulse rate.
The method according to claim 1 or 8,
Wrist-type pulse measuring device further comprises a power supply for supplying power to the light emitting device, the light receiving device and the control unit.
The method according to claim 1 or 8,
Wrist wearing pulse rate measuring device further comprises an interface for connecting to an external device.
The method according to claim 1 or 8,
Further comprising a bioimpedance measuring unit for measuring the bioimpedance of the user,
The controller may determine that the belt is worn on the wrist of the human body when the measured bioimpedance is smaller than a reference impedance.
The method according to claim 1 or 8,
The control unit is a wrist worn pulse rate measuring device, characterized in that for adjusting the intensity of the light irradiated from the light emitting device according to the magnitude of the pulse signal received from the pulse detection unit.
The method according to claim 1 or 8,
Wrist wearing pulse rate measuring device further comprises a communication unit for transmitting the pulse data corresponding to the pulse rate to an external server.
The method of claim 22,
The control unit may be changed into a pulse mode for measuring the pulse rate or an exercise amount mode for measuring an exercise amount for a predetermined time, by the user's selection,
The communication unit transmits an emergency signal to the external server when the measured pulse rate is out of a preset normal pulse rate range and a user pulse rate range, or transmits the emergency signal to the external server by the user's selection Wrist wearable pulse measuring device.
The method of claim 23, wherein
The control unit calculates the amount of heat consumed by the human body using the pulse rate and calculates the amount of exercise during the predetermined time period, the wrist worn pulse measuring device.
25. The method of claim 24,
And a switch unit for selecting the pulse mode or the exercise mode and selecting whether to transmit the emergency signal.
The method of claim 25,
A display unit mounted to the belt and displaying the pulse rate calculated by the controller;
The switch unit is a wrist worn pulse rate measuring device, characterized in that formed on the display unit by a touch screen (touch screen) method.
The method of claim 22,
The control unit compares the pulse signal with a preset motion pattern signal, estimates the pulse rate from the motion pattern signal when the degree of coincidence of the pulse signal with respect to the motion pattern signal is equal to or greater than a reference value,
The communication unit is a wrist worn pulse rate measuring device, characterized in that for transmitting the emergency signal to the external server when the match is less than the reference value.
The method of claim 22,
The communication unit may receive an access signal from the external server, and when the access signal is received, the wrist worn pulse rate measuring apparatus, characterized in that for transmitting the pulse data to the external server.
The method according to claim 1 or 8,
Wrist-mounted pulse measuring device further comprises a global positioning system (GPS) receiver mounted to the belt.
As a control method of the wrist worn pulse measuring apparatus of Claim 1 or 8,
Determining whether the pulse rate can be calculated based on the state of the pulse signal;
Calculating the pulse rate by a pulse detection algorithm when the pulse rate can be calculated;
If it is impossible to calculate the pulse rate due to the movement of the user, comparing the pulse signal with a preset movement pattern signal; And
Estimating the pulse rate from the movement pattern signal by a pulse estimation algorithm when the degree of agreement of the pulse signal with the movement pattern signal is equal to or greater than a reference value.
The method of claim 30,
The wrist worn pulse measuring device further includes a communication unit,
When the calculated pulse rate is out of a preset normal pulse rate range and a user pulse rate range, or when the coincidence of the pulse signal with respect to the movement pattern signal is smaller than the reference value,
Wrist-type pulse measuring device control method further comprising the step of transmitting an emergency signal to the external server through the communication unit.
The method of claim 30,
The wrist worn pulse measuring device further includes a bioimpedance measuring unit,
Before the step of determining whether the calculation of the pulse rate is possible,
Measuring, by the bioimpedance measurer, a bioimpedance of the user; And
And determining, by the controller, that the belt is worn on the wrist of the user when the measured bioimpedance is smaller than the reference impedance.
The method of claim 30,
The wrist worn pulse measuring device further includes a display unit,
After calculating the pulse rate, depending on whether the calculated pulse rate is within a preset normal pulse rate range and a user pulse rate range, the state of the pulse rate through the display unit to 'normal', 'attention' or 'emergency' Classifying and displaying; And
And after the estimating of the pulse rate, displaying the state of the pulse rate as 'movement' through the display unit.
The method of claim 30,
The control unit may be changed into a pulse mode for measuring the pulse rate or an exercise amount mode for measuring an exercise amount for a predetermined time, by the user's selection,
When the exercise mode is selected by the user,
After calculating the pulse rate or estimating the pulse rate,
And calculating the amount of exercise during the predetermined time by calculating the amount of heat consumed by the human body using the pulse rate.
The method of claim 34, wherein
The wrist worn pulse measuring device further includes a display unit,
When the exercise mode is selected by the user,
After calculating the pulse rate or estimating the pulse rate,
The display unit further comprises the step of displaying the state of the pulse rate divided into 'normal', 'attention' or 'emergency' based on the preset maximum target pulse rate and minimum target pulse rate through the display unit How to control the pulse measuring device.
The method of claim 34, wherein
The wrist-worn pulse measuring device may further include a switch unit for selecting the pulse mode or the exercise mode and selecting whether to transmit an emergency signal to an external server.
The method of claim 30,
After determining whether the calculation of the pulse rate is possible,
If it is impossible to calculate the pulse rate due to the change in the wearing position of the belt, the wrist further comprising the step of adjusting the intensity of the light irradiated from the light emitting device according to the magnitude of the pulse signal received from the pulse detection unit How to control the wearable pulse measuring device.
The method of claim 30,
The wrist worn pulse measuring device further includes a communication unit,
After calculating the pulse rate or estimating the pulse rate,
Receiving an access signal from an external server through the communication unit; And
And transmitting the pulse data to the external server through the communication unit according to the access signal.

Images