KR20160006434A - Continuous blood pressure measurement Electronic devices and method - Google Patents

Abstract

According to the present invention, provided is an electronic device including: a first measurement part for acquiring a first signal; a second measurement part for acquiring a second signal; and a control part which detects a time lag through a first reference point of the first signal and a second reference point of the second signal, and acquires a differential signal by performing quadratic differential of the first signal, and calculates a result value on the basis of the time lag and the differential signal.

Description

[0001] Continuous blood pressure measurement electronic devices and methods [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic apparatus and method for continuously measuring blood pressure, and a recording medium on which a program for performing the method is recorded.

More particularly, the present invention relates to an electronic apparatus and method for detecting peak points of a pulse wave signal and an electrocardiogram signal, continuously measuring blood pressure based on time difference of peak points and blood vessel elasticity, and a program for performing the method And a recording medium.

Blood pressure refers to the force that blood flowing through our body moves along the blood vessels and attaches to the blood vessel walls.

Such blood pressure is measured mainly by using a cuff to compress the upper arm and measuring the magnitude of the Cortocov tone or pressure oscillation generated in the process of gradually releasing the pressure.

The Cortecov tone is usually measured using a stethoscope, and the magnitude of the pressure is measured using a sensor. These methods are problematic in that the user may feel uncomfortable due to the pressure of the cuff, is not suitable for measurement in neonates or infants, and is difficult to continuously measure.

An object of the present invention is to provide a continuous blood pressure measurement electronic device and method capable of continuously measuring the blood pressure of the user based on the interval between the peak points of the pulse wave and the electrocardiogram and the blood vessel elasticity, minimizing the inconvenience of the user, And a recording medium on which a program for performing the method is recorded.

Another object of the present invention is to provide an electronic device and method for acquiring blood vessel elasticity in real time from a pulse wave signal and measuring blood pressure by applying a distance between a peak point of a pulse wave and an electrocardiogram and the blood vessel elasticity, And a recording medium on which the recording medium is recorded.

According to an aspect of the present invention, there is provided a signal processing apparatus including a first measurement unit for acquiring a first signal; A second measurement unit for acquiring a second signal; And a controller for detecting a time difference through a first reference point of the first signal and a second reference point of the second signal, obtaining a differential signal obtained by second differentiating the first signal, And a control unit for controlling the operation of the electronic device.

The first signal may be a pulse wave signal, and the second signal may be an electrocardiogram signal.

In addition, the first measuring unit may acquire a pulse wave using light.

The first reference point and the second reference point of the control unit may be peak points of the first and second signals, respectively.

In addition, the controller may acquire the systolic blood pressure and the diastolic blood pressure based on the time difference and the differential signal.

The controller may acquire the blood vessel elasticity from the differential signal, and calculate the blood pressure based on the blood vessel elasticity and the time difference.

The blood pressure measuring device may further include a display unit for outputting the blood pressure.

The control unit may calculate the average blood pressure for a predetermined time and may control the display unit to output the average blood pressure.

In addition, the controller may control the display unit to continuously output the change of the blood pressure at predetermined time intervals.

The blood pressure may be at least one of a systolic blood pressure, a diastolic blood pressure, a middle blood pressure, and an average blood pressure. The electronic device may further include a wireless communication unit for transmitting the blood pressure to an external electronic device.

According to another aspect of the present invention, there is provided a display device comprising: a display; A first measurement unit for acquiring a first signal; A second measurement unit for acquiring a second signal; A third measuring unit for second-differentiating the first signal to obtain a third signal; Detecting a peak point of each of the second and third signals, detecting a time difference between peak points of the second and third signals, calculating a blood pressure based on the time difference and the third signal, And a control unit for outputting the blood pressure.

According to still another aspect of the present invention, there is provided a method of generating a signal, comprising: obtaining a first signal and a second signal; Detecting a reference point of each of the first signal and the second signal; Detecting a time difference between the reference points; Performing a second differentiation of the first signal to obtain a third signal; Obtaining a blood vessel elasticity from the third signal; Calculating a blood pressure based on the time difference and the blood vessel elasticity; And outputting the blood pressure.

At this time. The step of outputting the blood pressure may be a step of outputting the average blood pressure for the predetermined time of the calculated blood pressure.

According to another aspect of the present invention, there is provided a recording medium on which a program for performing a blood pressure measurement method is recorded.

According to the present invention, it is possible to solve the conventional problem that the user feels uncomfortable due to the pressure applied through the cuff, and the measurement and change of the blood pressure can be continuously measured.

1 is a block diagram of an electronic apparatus according to a first embodiment of the present invention.
2 is a block diagram of a first measurement unit according to a first embodiment of the present invention.
3 is a block diagram of a second measuring unit according to the first embodiment of the present invention.
4 is a view showing the reference point detection and the time difference detection of the present invention.
FIG. 5 is a view showing acceleration pulse waves and minutiae points of the present invention. FIG.
6 is a view showing a measuring method according to the first embodiment of the present invention.
7 is a diagram illustrating a method of acquiring an acceleration pulse wave according to a first embodiment of the present invention.
8 is a block diagram of an electronic apparatus according to a second embodiment of the present invention.

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

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept. Other embodiments falling within the scope of the inventive concept may readily be suggested, but are also considered to be within the scope of the present invention.

The same reference numerals are used to designate the same components in the same reference numerals in the drawings of the embodiments.

The blood pressure measuring electronic device of the present invention is hereinafter referred to as an electronic device for convenience of explanation.

In the present invention, the blood pressure may include not only commonly used systolic blood pressure and diastolic blood pressure but also medial blood pressure and mean blood pressure.

1 is a block diagram of an electronic apparatus according to a first embodiment of the present invention.

1, the electronic apparatus 1 may include a first measurement unit 10, a second measurement unit 20, and a control unit 30. The first measurement unit 10, the second measurement unit 20, The control unit 30 may include a reference point detection unit 31, a time detection unit 33, a differential signal unit 35, and a calculation unit 37.

The first measurement unit 10 may be a measurement module for acquiring a first signal. Also, the controller 30 may receive the first signal through an external device. In this case, the first measuring unit 10 may receive the first signal from an external device connected to the outside and may transmit the first signal to the controller 30.

The first signal may be a pulse wave signal. The first signal may be a signal indicating the contraction and expansion of the blood vessel due to the movement of the blood. When the first measurement unit 10 is a measurement module for measuring the first signal, the first measurement unit 10 may preferably acquire the first signal using light. Preferably, the first measuring unit 10 may obtain the first signal from the wrist of the user. Also, the first measuring unit 10 may obtain the first signal from a part of the user's body such as the user's finger, earlobe, toe, and the like.

The first measurement unit 10 may transmit the acquired first signal to the controller 30.

2 is a block diagram of the first measuring unit 10 according to the first embodiment of the present invention. 2 is a block diagram showing an exemplary embodiment in which the first measurement unit 10 is a measurement module for acquiring a first signal, and the first measurement unit 10 is a block diagram configuration of FIG. 2 But is not limited to.

2, the first measuring unit 10 includes a light emitting unit 11 that emits light, a light receiving unit 13 that receives a signal reflected by the blood vessel, and a first filter unit 15 can do.

The light emitting unit 11 may be a light emitting device that emits light of a predetermined wavelength. The emission wavelength of the light emitting portion 11 may be at least one of near infrared, red, yellow, green, purple, and blue.

The light emitting unit 11 may emit light to the wrist of the user.

The light receiving unit 13 may be a light receiving element capable of receiving a signal by light. The light receiving section 13 may be a light receiving element such as a photodetector, a photodiode, a CDS, a phototransistor, or the like.

The light receiving unit 13 may sense the light signal and output the electric signal corresponding to the signal to the outside. The light receiving unit 13 senses a light signal emitted from the light emitting unit 11 and reflected from the wrist blood vessel of the user, and can output an electric signal corresponding to the sensed light signal.

The first filter unit 15 may filter the electric signal received from the light receiving unit 130. [

The first filter unit 15 may receive an electrical signal corresponding to the light signal sensed by the light receiving unit 13. The first filter unit (15) can acquire the first signal from the electric signal received from the light receiving unit (13).

The first filter unit 15 may remove the unnecessary signal and acquire only the first signal when the unnecessary signal except for the first signal exists in the received electric signal. The first filter unit 15 may filter the received electrical signal in the frequency domain of the first signal to obtain the first signal. The first filter unit 15 may obtain the first signal from a frequency region of 0 to 10 Hz, but is not limited thereto.

The first filter unit 15 may amplify the signal amplitude of the first signal at a predetermined ratio. The first filter unit 15 may be a signal processing filter for amplifying and filtering a signal. The first filter unit 15 may be an analog filter circuit composed of analog circuits.

The first filter unit 15 may be a digital filter that is filtered and amplified through a program. When the first filter unit 15 is a digital filter, the first filter unit 15 may be included in the control unit 30. [ In this case, a separate storage unit (not shown) may store a program for driving the first filter unit 15.

The first filter unit 15 may transmit the acquired first signal to the controller 30.

The second measurement unit 20 may be a measurement module for acquiring the second signal.

 Also, the controller 30 may receive the second signal through a separate device connected to the outside. In this case, the second measurement unit 20 may receive the second signal from an external device connected to the external device, and may transmit the second signal to the control unit 30.

The second signal may be an electrocardiogram signal. The second signal may be a signal indicating a potential by heartbeat. If the second measurement unit 20 is a measurement module for measuring the second signal, the second measurement unit 20 may preferably acquire the second signal using an electrode.

3 is a block diagram of a second measuring unit 20 according to the first embodiment of the present invention. 3 is a block diagram showing an exemplary embodiment in which the second measurement unit 20 is a measurement module for acquiring a second signal, and the second measurement unit 20 is a block diagram configuration The present invention is not limited thereto.

3, the second measuring unit 20 includes a first electrode unit 21, a second electrode unit 23, a third electrode unit 25, and a second filter unit 27 can do.

The first to third electrode units 21, 23, and 25 may be electrodes for acquiring a second signal.

The electrode may preferably be an Ag / Cl electrode, but is not limited thereto.

The first to third electrode units 21, 23, and 25 may contact the right, left, right, or left legs of the user to obtain electrode signals, respectively. For example, the first electrode unit 21 contacts the right hand of the user, the second electrode unit 23 contacts the left hand of the user, and the third electrode unit 25 contacts the right The electrode signal can be obtained by contacting the leg.

The first to third electrode units 21, 23, and 25 may acquire electrode signals at one point. For example, the first to third electrode units 21, 23 and 25 may acquire the electrode signal from a part of the user's body such as the right, left, right, left, heart, chest, . In this case, only one of the first, second, third, and fourth electrode units 21, 23, and 25 may be provided to acquire a signal.

The second filter unit 27 may filter the electrode signals sensed by the first to third electrode units 21, 23 and 25 to acquire the second signal.

The second filter unit 27 may receive the electrode signals sensed by the first, second, and third electrode units 21, 23, and 25.

The second filter unit 27 may remove the unnecessary signal and obtain only the second signal when the unnecessary signal is present in the received signal except for the second signal. The second filter unit 27 may filter the received electrical signal in the frequency domain of the second signal to obtain the second signal. The second filter unit 27 is preferably capable of acquiring the second signal from a frequency range of 0 to 200 Hz, but is not limited thereto.

The second filter unit 27 may amplify the signal amplitude of the second signal at a predetermined ratio.

The second filter unit 27 may be a signal processing filter for amplifying and filtering a signal. The second filter unit 27 may be an analog filter circuit composed of an analog circuit. The second filter unit 27 may be a digital filter that is filtered and amplified through a program. When the second filter unit 27 is a digital filter, the second filter unit 27 may be included in the control unit 30. [ In this case, a separate storage unit (not shown) may store a program for driving the second filter unit 27.

And the second filter unit 27 may transmit the obtained second signal to the controller 30. [

The controller 30 shown in FIG. 1 may include the reference point detector 31, the time detector 33, the differential signal unit 35, and the calculator 37.

The control unit may receive the first signal and the second signal from the first measurement unit 10 and the second measurement unit 20.

The reference point detecting unit 31 may detect reference points of the first signal and the second signal. The reference point may preferably be a peak point of each of the first signal and the second signal, but is not limited thereto. The reference point detection unit 31 may include a detection condition for detecting the reference point.

For example, when the reference point is a peak point of the first signal and the second signal, the detection condition may be a point at which the values of the first signal and the second signal start falling at a rising maximum point.

The reference point may be various points such as a lowest point and an inflection point in addition to the peak point.

A plurality of the first reference point and the second reference point may exist on the first signal and the second signal. That is, the reference point detection unit 31 can detect a plurality of first reference points as the first signal is continuously measured. Also in the case of the second signal, a plurality of second reference points may be detected while the second signal is continuously measured.

The reference point detection unit 31 can obtain a pulse rate of one minute through the reference point number of the first signal for one minute. The reference point detecting unit 31 can obtain the heart rate for one minute through the reference point number of the second signal for one minute.

When the measurement time of the first signal and the second signal is less than one minute, the reference point detection unit 31 can obtain the pulse rate and the heart rate through the ratio of the reference point detected per second. For example, if 10 reference points are detected when the first signal is measured for 10 seconds, the reference point detection unit 31 may obtain 60 at a pulse rate according to a ratio of 10 seconds as a measurement time and 1 minute as a reference. For example, the reference point detection unit 31 may divide 60 by the measurement time in seconds, and multiply the divided quotient by the number of currently detected reference points to obtain the pulse rate and the heart rate.

The reference point detecting unit 31 multiplies the divided quotient by the number of the currently detected reference points to obtain the pulse rate and the heart rate so that the heart rate and the pulse rate can be measured even at a measurement time of less than one minute.

4 is a view showing the reference point detection and the time difference detection of the present invention.

As shown in FIG. 4, the first measurement unit 10 and the second measurement unit 20 may acquire the first signal and the second signal.

The reference point detection unit 31 of the control unit 30 may detect the first reference point from the first signal and detect the second reference point from the second signal.

The reference point detecting unit 31 may detect a plurality of the first reference points and the second reference points from the first signal and the second signal. The reference point detection unit 31 may detect a plurality of the first reference points and the second reference points from the first signal and the second signal acquired successively.

The reference point may be a point where the measured value of the pulse wave signal rises to a maximum value and then falls, but the present invention is not limited thereto.

The time detector 33 may detect a time difference between the first reference point and the second reference point. The time difference may be an absolute value of a time difference between the first reference point and the second reference point.

The time detector 33 can detect a time difference between reference points of the first signal and the second signal detected by the reference detector 31. [

The time detector 33 may detect a time difference between a first reference point that is a reference point of the first signal and a second reference point that is a reference point of the second signal. The time difference may be a time difference between the first reference point of the first signal and the second reference point of the second signal following the first reference point. For example, when the detection time of the first reference point is 200 ms and the detection time of the second reference point is 300 ms, the time difference may be 100 ms.

When there are a plurality of reference points, the time difference may be an average time difference between the plurality of reference points.

The differential signal unit 35 of FIG. 1 may differentiate the first signal with respect to time. The differential signal unit 35 may divide the first signal by a second half. The second derivative may be a second derivative of the first signal with respect to time. The signal obtained by second-differentiating the first signal may be an acceleration Mac file.

5 is a view showing the characteristic points of the acceleration pulse wave of the present invention.

As shown in FIG. 5, the acceleration pulse wave of the present invention may include feature points a, b, c, d, and e.

The differential signal of the present invention may be the acceleration pulse wave, and the blood vessel elasticity may be a ratio of the value of the b-point to the value of the a-point of the acceleration pulse wave or a ratio of the value of the d- Lt; / RTI >

The differential signal portion 35 of FIG. 1 can acquire the blood vessel elasticity from the second-differentiated first-order differentiated accelerated pulse wave. The blood vessel elasticity may be a numerical value indicating elasticity or stretching force of the blood vessel of the user. The blood vessel elasticity can be obtained through the characteristic points of the acceleration pulse wave. The feature point may be a peak point or an inflection point of the acceleration pulse wave.

The differential signaling unit 35 can obtain the blood vessel elasticity by calculating a characteristic point value of the differential signal through a predetermined equation.

The predetermined equation may be, for example, a ratio of the value of the b feature point to the value of the a feature point of the differential signal. As another example, the predetermined formula may be a ratio of the value of the d feature point to the value of the a specific point.

The calculation unit 37 may calculate a result value based on the time difference between the differential signal obtained by differentiating the first signal and the time detection unit 33. The differential signal may be a signal obtained by second differentiating the first signal. The calculation unit 37 may calculate a result value based on the blood vessel elasticity of the differential signal unit 35 and the time difference. The calculation unit 37 may calculate the resultant value by a predetermined calculation formula. The storage unit (not shown) may store the predetermined calculation formula.

The calculation unit 37 may continuously calculate the result value at predetermined time intervals.

The control unit 30 may store the resultant value in the storage unit (not shown).

The electronic device 1 can calculate the resultant value of the blood vessel elasticity without calculating a blood vessel elasticity measurement device by calculating a result value based on the differential signal and the time difference, The elasticity can be measured and applied in real time.

The controller 30 may be implemented as an application specific integrated circuit (ASIC), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs) controllers, microcontrollers, microprocessors, and the like.

The reference point detection unit 31, the time detection unit 33, the differential signal unit 35 and the calculation unit 37 may be included in the control unit 30 and implemented by the control unit 30.

The reference point detection unit 31, the time detection unit 33, the differential signal unit 35 and the calculation unit 37 may be implemented by the control unit 30. The reference point detection unit 31, the time detection unit 33, the differential signal unit 35, and the calculation unit 37 may be implemented with respective functions of the application.

The electronic device 1 may further include a display unit (not shown).

The control unit 30 may control the display unit to output the result value. The controller 30 may control to output at least one of the blood vessel elasticity, the pulse rate, and the heart rate while controlling to output the resultant value.

The controller 30 may control the display unit (not shown) to continuously output the change of the result value at a predetermined time interval.

The electronic device 1 may further include a communication unit (not shown).

The control unit 30 can transmit the result value to the external electronic device through the communication unit (not shown). The communication unit (not shown) may be a module for communicating with an external electronic device. The communication unit (not shown) can communicate with an external electronic device through a wireless communication method.

When the communication unit (not shown) communicates with an external electronic device through a wireless communication scheme, the communication unit (not shown) may be a WiFi, a WiGig, a satellite communication, long term evolution, code division multiple access (CDMA), optical wireless communication, RFID, radio frequency identification (NFC), near field communication, Bluetooth, Zigbee, Can be connected to external electronic devices.

The communication unit (not shown) can communicate with an external electronic device through a wired communication method. When the communication unit (not shown) communicates with an external electronic device through a wired communication method, it can be connected to an external electronic device by using USB, serial communication, parallel communication, direct communication, UART communication, USART communication or the like.

6 is a view showing a blood pressure measurement method according to the first embodiment of the present invention.

 As shown in Figure 6, the blood pressure measuring method of the present invention includes the steps of acquiring a signal (S210), detecting a peak point (S220), detecting a peak interval (S230), acquiring a differential signal (S240), obtaining a blood vessel elasticity (S250), calculating a result (S260), and outputting a result (S270).

Each step will be described in more detail below.

The first measurement unit 10 and the second measurement unit 20 may acquire a signal (S210)

The signal may be a first signal and a second signal. The first measurement unit 10 may acquire the first signal, and the second measurement unit 20 may acquire the second signal. The control unit 30 of the electronic device 1 may receive the first signal and the second signal from the first measurement unit and the second measurement unit.

The reference point detecting unit 31 may detect the reference point of the signal (S220)

The control unit 30 of the electronic device 1 may receive the first signal and the second signal from the first measurement unit 10 and the second measurement unit 20. [ The control unit 30 may detect the reference points of the first signal and the second signal through the reference point detection unit 31 of the control unit 30,

The time detector 33 may detect a time difference (S230)

The control unit 30 can detect a time difference between the detected first signal and the second signal. The time difference may be a time difference between the first reference point of the first signal and the second reference point of the second signal following the first reference point.

 For example, when the detection time of the first reference point is 300 ms and the detection time of the second reference point is 500 ms, the time difference may be 200 ms.

The differential signal unit 35 can acquire the differential signal (S240)

The differential signal unit 35 can obtain a differential signal obtained by differentiating the first signal.

 The derivative may be a second derivative using an analog circuit or a digital filter. The control unit 30 can differentiate the first signal by the differential signal unit 35 to acquire the differential signal. The differential signal may be a second order differentiated accelerated McFile of the first signal.

The differential signal portion 35 can acquire the blood vessel elasticity (S250)

The differential signal unit 35 can obtain the blood vessel elasticity from the differential signal. The controller 30 may acquire the blood vessel elasticity through the differential signal unit 35. The differential signal portion 35 can acquire the blood vessel elasticity through the characteristic points of the differential signal. The characteristic point may be a characteristic point of the acceleration pulse wave.

The differential signaling unit 35 can obtain the blood vessel elasticity by calculating a characteristic point value of the differential signal through a predetermined equation.

The predetermined equation may be, for example, a ratio of the value of the b feature point to the value of the a feature point of the differential signal. As another example, the predetermined formula may be a ratio of the value of the d feature point to the value of the a specific point.

The electronic device 1 may calculate a result value (S260)

The controller 30 may calculate the result through the calculator 37. The calculation unit 37 may calculate the result based on the time difference and the blood vessel elasticity. The calculation unit 37 may calculate the resultant value through the equation of the blood vessel elasticity and the time difference variable.

The controller 30 may output the result (S270)

The control unit 30 may output the result to the user through the display unit (not shown). The control unit 30 may control the display unit (not shown) to output at least one of the resultant value, the blood vessel elasticity, the pulse rate, and the heart rate.

The control unit 30 can output the result value to the external electronic device through the communication unit (not shown).

7 is a view illustrating a method of acquiring an acceleration pulse wave according to the first embodiment.

As shown in FIG. 7, the method for acquiring an acceleration pulse wave of the present invention includes: acquiring a pulse wave signal; Performing a differential (first differentiation) on the pulse wave signal; Obtaining the velocity pulse wave; Performing a differential (second differentiation) on the velocity pulse wave; And acquiring the acceleration pulse wave.

The first measurement unit 10 may acquire a pulse wave signal (S310)

The pulse wave signal may be a first signal acquired from the first measurement unit 10. The controller 30 may acquire the pulse wave signal from the first measurement unit 10. [

The controller 30 can differentiate the pulse wave signal (S320)

The controller 30 may differentiate the pulse wave signal with respect to time through an analog differentiator circuit or a digital differentiator.

The controller 30 may acquire the velocity pulse wave from the result of differentiating the pulse wave signal (S330)

The controller 30 can differentiate the velocity pulse wave (S340)

The controller 30 may differentiate the velocity pulse wave with respect to time through an analog differentiator circuit or a digital differentiator. The control unit 30 can differentiate the velocity pulse wave in the same manner as the step of differentiating the pulse wave signal.

The controller 30 may acquire an acceleration pulse wave from the result of differentiating the velocity pulse wave (S350)

8 is a block diagram of an electronic apparatus according to a second embodiment of the present invention.

The second embodiment is the same as the first embodiment except that a separate measuring unit performs a part of the functions of the differential signal unit. Therefore, in the description of the second embodiment, the details common to the first embodiment will be omitted

8, the electronic device according to the second embodiment of the present invention includes a first measurement unit 110, a second measurement unit 120, a control unit 130, and a third measurement unit 140 .

 The control unit 130 may include a peak point detection unit 131, a time detection unit 133, a differential signal unit 135, and a blood pressure measurement unit 137.

The first measurement unit 110 may acquire the first signal.

The second measurement unit 120 may acquire the second signal.

The third measuring unit 140 may include a light emitting unit (not shown), a light receiving unit (not shown), and a filter unit (not shown) similar to the first measuring unit 100.

The third measuring unit 140 may acquire the first signal through the light emitting unit (not shown), the light receiving unit (not shown) and the filter unit (not shown) in the same manner as the first measuring unit 100 have.

The third measuring unit 140 may include a differential circuit for obtaining the differential signal in a filter unit (not shown) of the third measuring unit 140. The filter unit (not shown) of the third measuring unit 140 may be an analog circuit or a digital circuit. If the filter unit (not shown) of the third measuring unit 140 is a digital circuit, the filter unit (not shown) of the third measuring unit 140 may be included in the controller 130. In this case, a program for driving the filter unit (not shown) of the third measuring unit 140 may be stored in the storage unit (not shown). In this case, the controller 130 may control the filter unit (not shown) of the third measuring unit 140 to operate.

(Not shown) of the third measuring unit 140, the first signal can be differentiated by a second order.

The differential signal may be obtained by differentiating the first signal by a second order by filtering the filter unit (not shown) of the third measuring unit 140.

The differential signal may be the acceleration McFile.

The third measuring unit 140 may receive the first signal from the first measuring unit 110 without including the light emitting unit and the light receiving unit. In this case, the third measuring unit 140 can differentiate the first signal over the second order.

The third measuring unit 140 may differentiate the first signal by a second order to obtain the differential signal. The differential signal may be the acceleration McFile.

The third measuring unit 140 may output the differential signal to the controller 130. [

The control unit 130 may receive the first signal from the first measurement unit 110. [

The control unit 130 may receive the second signal from the second measurement unit 120. [

The control unit 130 may receive the differential signal from the third measurement unit 140. [

The reference point detection unit 131 of the control unit 130 may detect reference points of the first signal and the second signal, respectively.

The time detector 133 of the controller 130 may detect a time difference between the reference points.

The differential signaling unit 135 of the controller 130 may acquire the blood vessel elasticity based on the differential signal received from the third measuring unit 140.

The calculation unit 137 of the control unit 130 may calculate the result based on the time difference and the blood vessel elasticity.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that changes or modifications may fall within the scope of the appended claims.

1 Electronic equipment 10,110 First measurement unit
11 Light emitting portion 13 Light receiving portion
15 first filter unit 20, 120 second measuring unit
21 first electrode portion 23 second electrode portion
25 third electrode portion 27 second filter portion
30, 130 control unit 31, 131 reference point detection unit
33,133 time detecting section 35,135 differential signal section
37,137 calculating section 140 third measuring section

Claims (14)

A first measurement unit for acquiring a first signal;
A second measurement unit for acquiring a second signal; And
A differential signal obtained by secondarily differentiating the first signal from the first reference point of the first signal and a second reference point of the second signal, and obtaining a resultant value based on the time difference and the differential signal, And a control unit for controlling the operation of the electronic device. The method according to claim 1,
Wherein the first signal is a pulse wave signal and the second signal is an electrocardiogram signal. The method according to claim 1,
Wherein the first measurement unit acquires the first signal using light. The method according to claim 1,
Wherein the first reference point and the second reference point of the control unit are peak points of the first and second signals, respectively. The method according to claim 1,
Wherein the resultant value is at least one of a systolic blood pressure, a diastolic blood pressure, a middle blood pressure, and an average blood pressure. The method according to claim 1,
Wherein the control unit acquires the blood vessel elasticity from the differential signal, and calculates a resultant value based on the blood vessel elasticity and the time difference. The method according to claim 1,
And a display unit for outputting the resultant value,
Wherein the control unit controls the display unit to output at least one of the resultant value, the pulse rate, the heart rate, and the blood vessel elasticity. The method according to claim 1,
Wherein the control unit calculates the average result value for a predetermined time and controls the display unit to output the average result value. The method according to claim 1,
Wherein the control unit controls the display unit to continuously output a change in the result value at a predetermined time interval. The method according to claim 1,
And a communication unit for transmitting the resultant value to an external electronic device. A display unit;
A first measurement unit for acquiring a first signal;
A second measurement unit for acquiring a second signal;
A third measuring unit for second-differentiating the first signal to obtain a third signal; And
Detecting a reference point of each of the second and third signals, detecting a time difference between the reference points of the second and third signals, calculating a result based on the time difference and the third signal, And outputting a result value. Obtaining a first signal and a second signal;
Detecting a reference point of each of the first signal and the second signal;
Detecting a time difference between the reference points;
Performing a second differentiation of the first signal to obtain a third signal;
Obtaining a blood vessel elasticity from the third signal;
Calculating a result based on the time difference and the blood vessel elasticity; And
And outputting the resultant value. 13. The method of claim 12,
And outputting the resultant value is a step of outputting an average value of the calculated result value for a predetermined time. A recording medium on which a program for carrying out the method according to any one of claims 12 and 13 is recorded.

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