KR101260465B1 - Blood Pressure Calculation Method and Device utilizing Pulse Wave of a wrist artery - Google Patents

Abstract

The present invention relates to a blood pressure measurement apparatus and a blood pressure measurement method for a blood pressure monitor, which comprises a sensor for attaching a sensor to a wrist artery and storing a sensor output corresponding to a normal normal blood pressure / pulse as correction data, And a method and an apparatus for detecting arterial pulse waves to calculate a blood pressure.
To this end, the present invention provides a blood pressure measuring device comprising at least one of a reference pressure sensor, a pulse wave sensor, and a motion sensor, a standard systolic blood pressure, diastolic blood pressure, exercise load test data, A step of inputting data such as a pressure sensor, a pulse wave sensor, a motion sensor and a pulse, storing the output of the systolic blood pressure, the reference pressure sensor corresponding to the diastolic blood pressure, the pulse wave sensor, the pulse rate and the motion sensor as blood pressure correction data, The pulse wave detector, and the motion sensor, and retrieving the database stored in the blood pressure calculation program and correcting the stored blood pressure data to calculate blood pressure.

Description

       BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a blood pressure calculation method and apparatus for detecting a wrist artery pulse wave,

The present invention relates to a blood pressure measurement apparatus and a blood pressure measurement method for a blood pressure monitor, which comprises a sensor for attaching a sensor to a wrist artery and storing a sensor output corresponding to a normal normal blood pressure / pulse as correction data, And a method and an apparatus for detecting arterial pulse waves to calculate a blood pressure.

The blood pressure measurement method is to prepare a mercury sphygmomanometer and a stethoscope. The cuff is wrapped around the forearm and air is injected to block the blood flow of the artery. The air of the cuff is gradually withdrawn, and the first mercury- The height is measured and managed by systolic and diastolic blood pressure. The same principle applies to the electronic blood pressure monitor. However, currently available mercury / electronic blood pressure monitors are difficult to carry and wrist-type electronic blood pressure monitors can not manage blood pressure effectively because of volume, noise and power consumption.

  On the other hand, the prior art Patent No. 10-0431979 is a wrist-type mobile phone which has a function of transmitting data in case of emergency such as blood pressure measurement, but it is inconvenient to carry on the wrist, measures against noise and power consumption due to blood pressure and pulse measurement There is no singularity other than the simple miniaturization of existing devices. The patent 10-0740273 and 10-0809953 disclose that although the blood pressure is measured on the wrist and used as an alarm, a correction blood pressure monitor is additionally provided to deteriorate efficiency, and the blood pressure of the wrist is actively changed according to the movement, the measurement posture, the position of the wrist, It is not suitable for alarm and blood pressure management.

A method and apparatus for detecting a blood pressure by sensing a wrist artery pulse wave of the present invention measures a sensor output from a reference pressure sensor and a pulse wave sensor installed in a wrist artery. The sensor output and blood pressure relationship correction data according to the individual wrist compression strength are generated and stored to prevent the calculation of the blood pressure due to the sensor output difference according to the individual wrist compression strength do. Enter the exercise load test data and use it as the blood pressure calculation data for each mode (sleeping, lifetime, walking, running). A manual measurement button is provided so that blood pressure and pulse can be calculated with low power at any time when necessary. The calculated blood pressure and pulse data can be used as an emergency alert for an emergency and can generate an emergency rescue signal in combination with a mobile communication terminal.

 A method and an apparatus for calculating a blood pressure by sensing a wrist artery pulse wave of the present invention includes a reference pressure sensor for measuring a wrist pushing strength, a pulse wave sensor for measuring a wrist artery pulse wave, a warning blood pressure, (Automatic, manual) data generation step, blood pressure calculation data based on wrist compression strength and mode, data storage step, measurement method (automatic, manual) Calculating a systolic and diastolic blood pressure on the sensor output measured with the correction data according to the wrist compressive strength and mode in the blood pressure calculation program, and ringing an alarm when the set value is exceeded .

A method and an apparatus for calculating blood pressure by detecting the wrist artery pulse wave of the present invention include a motion sensor that measures blood pressure and pulse rate from a pulse wave sensor for monitoring wrist artery pulse waves to thereby facilitate personal health management and measure a behavior amount, So that the exercise amount can be effectively managed.

1 is a schematic block diagram of a method and apparatus for calculating blood pressure
Fig. 3 is a flowchart showing the blood pressure correction data establishing process of the blood pressure calculating program
4 is a diagram showing a blood pressure calculation process for calculating a blood pressure by measuring a pulse wave of a wrist artery
5 is a developed view showing an embodiment of a blood pressure calculation process and apparatus
Figure 6 is a side view of Figure 5,

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a schematic block diagram of a method and apparatus for detecting a wrist artery pulse wave to calculate a blood pressure. The method and apparatus for calculating the blood pressure include sensor information 101 in a reference pressure sensor, a pulse wave sensor and a motion sensor, sound and image information 102 in a microphone and a camera, artificial emergency structure information 103 in an impact sensor and an emergency rescue button And sends it to the information processing and storage unit 104 and the emergency structure signal generation unit 105 to store and process the result and send the processing result to the input and output processing unit 106 to generate a display and an alarm, The generating unit supplies power to the wireless input / output unit 107 that performs a communication function when an emergency rescue signal is generated, transmits data on the set line, and transmits and receives voice and image information.

    The function of each part is as follows.

    The sensor information 101 is composed of information collected from a reference pressure sensor for measuring the wrist compressive strength, a pulse wave sensor for measuring the wrist artery pulse wave, and a motion sensor for measuring the amount of motion, and the reference pressure sensor and the pulse wave sensor It consists of one or more strain gauges or piezoelectric elements. The pulse wave detector is installed perpendicular to the wrist artery. Pulse wave detectors for pulse measurement use piezoelectric elements. Pulse wave detectors for blood pressure measurement use strain gauges. However, if there is no need for constant measurement, pulse wave detectors for pulse measurement may not be available. Pulses are measured at pulse wave detectors for blood pressure measurement. The reference pressure sensor can be replaced with the lowest output of the pulse wave detector.

   The audio and video information 102 is collected from two cameras capturing different image information and a microphone using a piezoelectric effect.

    The artificial emergency structure information 103 is collected from the internal / external impact sensor for sensing the impact using the piezoelectric effect, the blood pressure calculation process, and the emergency rescue button provided outside the apparatus.

   The information processing and storage unit 104 stores information such as a normal blood pressure, an alert blood pressure, an alarm pulse, a guardian contact, a mobile phone number of a rescue requester, a power cut-off time after an emergency rescue signal, a data transmission time and a line number, A pulse sensor / pulse pressure sensor / pulse wave detector data, a momentum calculation program, and an output voltage of a pulse wave sensor that can identify a mode (sleep, daily life, walking, running, etc.) A blood pressure calculation program (DB) for converting blood pressure into blood pressure, a blood pressure / pulse measurement storage period, blood pressure / pulse data during exercise load, and the like are stored and stored in the blood pressure calculation process and apparatus, .

   The emergency rescue signal generator 105 performs a function of a blood pressure calculation process and a control unit of the apparatus. The emergency rescue signal generator 105 supplies power to the wireless input / output unit 107, which performs a communication function when an emergency rescue signal is generated, Signal and GPS positioning, blood pressure, pulse, and other personal information. In addition, the emergency rescue signal generator performs an automatic call reception for a call request call of a line set during a call standby when an emergency rescue signal is generated, has a function of rejecting an unconfirmed line, and prevents a power interruption function of the wireless input / .

   The input / output processing unit 106 can input data by using buttons such as a correction button and a mode button, change the operation state of the blood pressure calculation process and the device, and can input and change the operation state by downloading using Bluetooth It is possible. Also, the input / output processing unit generates visual and audible alarms (or vibrations), exchanges data with an external device using Bluetooth, and displays data on the display window.

   The wireless input / output unit 107 transmits and receives data and audio image information to and from the blood pressure calculation process and the device, and uses a wireless LAN interface such as 2G, 3G, or 4G of WIFI or mobile communication.

   The blood pressure calculation process and the information processing procedure of the apparatus are as follows.

   The blood pressure calculation process and the apparatus are configured to process the measured sensor information 101 such as the reference pressure sensor, the pulse wave sensor, and the motion sensor information in the information processing and storage unit 104 when the reference pressure sensor and the pulse wave sensor output exist at the set measurement time or manual measurement, And the blood pressure and pulse are calculated in the blood pressure calculation program DB and sent to the input / output processing unit 106 to be displayed on the display window. The information processing and storage unit 104 transmits an emergency rescue signal when the calculated blood pressure and pulse are separated from a personal set value (for example, a pulse count less than or equal to 40 and less than or equal to 200 and less than or equal to 3 times / minute, and a blood pressure systolic phase less than or equal to 50 mmHg and less than or equal to 200 mmHg three times / And transmits it to the structure signal generating unit 105. The emergency rescue signal generator supplies power to the wireless input / output unit 107 that performs a communication function when an emergency rescue signal is generated, and transmits the emergency rescue signal and personal information such as GPS positioning, blood pressure, and pulse to the set line of the information processing and storing unit . In addition, the emergency rescue signal generator tries to make a voice and video call with the established line after the personal information is transmitted when the emergency rescue signal is generated, and maintains a call waiting state when the call is not possible. When an emergency rescue signal is generated, the emergency rescue signal generator collects the voice and image information (102) in the call waiting state, stores the information in the information processing and storing unit (104), transmits it to the set line or outputs it to the input / output processing unit. The emergency rescue signal generator performs an automatic call reception for a call request call of a line set during a call standby when an emergency rescue signal is generated and has a function of rejecting an unconfirmed line and performs a function of preventing the wireless input / do.

   The artificial emergency structure information 103 generated from the impact sensor and the emergency rescue button is sent to the emergency rescue signal generator 105 and is processed in the same manner as the emergency rescue signal processing when the emergency rescue signal is generated by the sensor information 101.

   On the other hand, the blood pressure and pulse setting values can be set by dividing into the first and second set values, and when the first set value is exceeded, the measurement period is decreased to measure. Emergency rescue signal (or vibration) is sounded to prevent erroneous operation when emergency signal is generated. Emergency rescue signal is transmitted if there is no cancellation within a certain period of time (for example, 5 seconds).

   The pulse rate is measured by the amplitude period of the voltage generated by the pulse wave sensor. The blood pressure is varied by the pressure intensity of the wrist and the pulse wave signal individually, so that the blood pressure relationship database is corrected with the blood pressure correction data generated in the blood pressure correction data establishing process, ). The blood pressure calculation program DB is equipped with a blood pressure relationship database composed of a reference pressure sensor output, pulse wave sensor output, motion sensor data, systolic blood pressure, diastolic blood pressure, pulse, etc. based on experimental measurement data. In addition, an external manual measurement switch is provided to measure manually. Blood pressure measurement with high power consumption for power saving is measured only at measurement time or external switch operation, and alarm (except during sleep) is measured during blood pressure measurement. Minimize the error. The motion sensor data is stored in units of 1 hour and is also stored 15 minutes before the automatic measurement time, and is used as data for distinguishing the modes. The reference pressure sensor uses a strain gauge and the pulse wave sensor uses a strain gauge or a piezoelectric element and slightly protrudes so as to adhere to the wrist artery, and the output change is measured using a Wheatstone bridge circuit. The reference pressure sensor and the pulse wave sensor are fixed to the sensor support plate, and the sensor support plate is slidably provided so as to adapt to the size of the individual wrist. The reference pressure sensor, the pulse wave sensor, the voice information, the image information, the motion sensor, the shock sensor, the emergency rescue button, etc. can be selectively applied to the blood pressure calculation process and apparatus.

3 is a process of establishing correction data of the blood pressure calculation program. Since the blood pressure is the estimated blood pressure calculated based on the inputted systolic blood pressure, diastolic blood pressure, reference pressure sensor, output of the pulse wave sensor, and motion sensor data, a difference occurs depending on the blood pressure calculation process, the wearing state (pressing strength) . Therefore, a calibration procedure is needed to minimize this difference. The reference pressure sensor, the pulse wave sensor, the pulse rate, the motion sensor data and the wearer's weight, age, systolic / diastolic blood pressure, pulse, and exercise load test to distinguish the blood pressure calculation process and the mode of the device (daily life, walking, running, The blood pressure / pulse data is inputted (301), and the correction switch is pressed in a stable state by wearing the wireless communication terminal (302). The output voltage of the reference pressure sensor and the pulse wave detectors and the motion sensor data output are sensed to drive the blood pressure calculation program )do. The blood pressure calculation program calculates (304) the mean output voltage average of the reference pressure sensor and the mean maximum output voltage average of the pulse wave detectors for 10 seconds, the mean minimum output voltage average, the average pulse rate, and the motion sensor data. The average peak output voltage of the pulse wave detectors, the average peak-to-peak output voltage difference, the output voltage difference between the pulse wave detectors, the reference pressure sensor and the pulse wave The sensed period output voltage difference, the pulse rate, and the motion sensor data are calculated and used as the blood pressure correction data (305). That is, the stored data corresponds to the entered normal systolic blood pressure and diastolic blood pressure. The position of the wrist band is changed 307 to correct the error according to the position of the wrist band of the wireless communication terminal to repeat the correction procedures 302, 303, 304 and 305 and end the correction process 306. [

FIG. 4 is a blood pressure calculation process for calculating a blood pressure by measuring a pulse wave of the wrist artery. The blood pressure calculation process and the device include a pulse wave sensor capable of identifying a mode such as daily life, sleeping, walking, running, The motion sensor data is input and the data measurement and storage period is set and the blood pressure calculation program is loaded (401). The mode such as daily life, walking, running, sleeping, etc. is automatically set based on the sensed sensor data and a specific mode can be manually set (402). At the blood pressure measurement time 403, it is determined whether the output voltage of the reference pressure sensor is equal to or more than the reference pressure 405, and the alarm is sounded except for the sleep mode when the reference pressure is abnormal. (407) the output of the reference pressure sensor, the pulse wave sensor and the motion sensor data for 5 seconds and measures the average output voltage of the standard pressure sensor, the average maximum output voltage of the pulse wave sensor, and the output voltage difference of the pulse wave sensing period measured in the blood pressure calculation program, And the diastolic blood pressure is calculated based on the average output voltage of the standard pressure sensor, the average maximum output voltage of the pulse wave sensor, the output voltage difference of the pulse wave sensing period, the difference between the maximum and minimum output voltage of the pulse wave sensor, , Data at the time of exercise load inspection is searched in the blood pressure relationship database, and corrected (408) by the blood pressure correction data. The sensor output and the calculated blood pressure / pulse are stored (409) with the measurement time and used for health care and emergency rescue signal generation. If it is not the blood pressure measurement time 403, it is checked whether or not the manual measurement switch operation 410 is performed, and the same procedure as the blood pressure measurement procedure 407, 408, and 409 is performed during switch operation. If the output voltage of the reference pressure sensor is below the reference pressure (405), an alarm is generated (404). If the output voltage of the reference pressure sensor does not exceed the reference pressure after a predetermined time, .

5 is an exploded view showing an embodiment of the blood pressure calculation process and apparatus. Reference numeral 501 denotes a groove for facilitating bending and elasticity of the band so that the wrist band can be easily attached to the wrist, 502 is an external impact sensor on the wrist band, There are built-in shock sensor and motion sensor. 503 is an emergency rescue button that emits emergency rescue signal. It supplies power to the communication function, transmits personal information, and connects the call line. A mode button 504 for setting the operation mode of the operation setting type wireless terminal, 505 and 507 for the video camera, and 506 for the communication function power button to perform the functions of the general communication terminal. It does not transmit personal information to the line set when power is supplied. Reference numerals 508 and 514 denote reference pressure sensors, reference numerals 509, 510, 512 and 513 denote pulse wave detectors, reference numeral 511 denotes a manual blood pressure measurement switch, reference numeral 515 denotes a speaker, reference numeral 516 denotes a microphone for acquiring voice information, And 518 is a device that performs a Bluetooth function for inputting / outputting external data. Reference numeral 519 denotes a button for performing blood pressure correction. Reference numeral 520 denotes a display window for displaying various data, such as a GPS position, time, blood pressure, pulse and the like, and time and recent blood pressure / pulse are displayed at all times.

FIG. 6 is a side view of FIG. 5 illustrating a blood pressure calculation process and apparatus. FIG. 6 is an image camera 601 for transmitting motion of a counterpart, 602 is a mode button for setting a blood pressure calculation process and an operation mode of the apparatus, 603 is an emergency The power is supplied to the function, the personal information transmission and the call line are connected, and the power is not cut off by the power button 613 for the set time. 604 is an external impact sensor, 605 is a groove for bending and elasticity to allow the wrist band to easily attach to the wrist, 606 is a reference pressure sensor, 607 and 608 are pulse wave detectors, 609 is a sensor support plate, 610 is a manual blood pressure measurement switch, 612 is a main power battery with wireless charging and 613 is a power button and functions as a general communication terminal. In case of an emergency rescue signal, the power can not be turned off for a set time. Lt; / RTI >

502, 604: External impact sensor
503, 603: emergency rescue button
504, 602: a blood pressure calculation process, and a mode button
508, 514, 606: reference pressure sensor
509, 510, 512, 513, 607, 608: a pulse wave detector
511, 610: manual blood pressure measurement switch

Claims (5)

Comprising: a reference pressure sensor for measuring a pressing force of a wrist; a pulse wave sensor for detecting a pulse wave strength installed vertically in the artery of the wrist; and a motion sensor for measuring a movement amount;
Inputting the data of the pulse wave sensor, the data of the motion sensor, and the reference pressure sensor output data to the blood pressure measuring device;
Wherein the controller is configured to classify the mode from the reference pressure sensor, the pulse wave sensor, and the motion sensor to determine an average output voltage of the reference pressure sensor, an average pulse rate of the pulse wave sensor, ;
Calculating a corrected blood pressure using the stored blood pressure correction data;
The corrected blood pressure is stored together with the measurement time;
And a step of generating an emergency rescue signal when the corrected blood pressure exceeds a reference value
And calculating the blood pressure by detecting the wrist artery pulse wave.
A sensor information section composed of information collected from a reference pressure sensor, a pulse wave sensor, and a motion sensor;
A voice and image information part for capturing image information collected from a camera and a microphone;
An artificial emergency structure information unit consisting of information collected from internal and external shock sensors and emergency rescue buttons;
An information processing and storing unit receiving information from the sensor information unit and the voice and image information unit and comparing the received information with the stored normal blood pressure and pulse;
An emergency structure signal generator for performing a controller function using the information in the information processing and storage unit and the received information of artificial emergency structure information;
A wireless input / output unit for performing a communication function when the emergency rescue signal generator generates an emergency rescue signal;
And an input / output processor for inputting data from the information processing and storage unit and the radio input / output unit and displaying data on a display window, and calculating blood pressure. delete delete delete

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