CN204698542U - Improve the ambulatory blood pressure monitoring system of accuracy of measurement - Google Patents

Abstract

This utility model relates to a kind of ambulatory blood pressure monitoring system improving accuracy of measurement.Ambulatory blood pressure monitoring system comprises single machine unit and the ambulatory blood pressure collecting unit be attached thereto, liquid crystal display screen display unit, push-button unit, gravity sensing unit, motional induction unit, temperature induction unit, voice unit, real time clock unit and communication unit, and the cuff position of the Measure blood pressure that setting position and the patient of gravity sensing unit tie up is parallel.Monitoring method is: the position chanP according to measured corrects ambulatory blood pressure measured value, to obtain blood pressure measurement accurately, kinestate and ambient temperature are indicated, show ambulatory blood pressure values, kinestate and ambient temperature simultaneously, doctor is made to fully understand the blood pressure situation of measured, carry out comprehensive descision, be conducive to disease treatment.

Description

Ambulatory Blood Pressure Monitoring System with Improving Measurement Accuracy

technical field

The utility model relates to a dynamic blood pressure measuring device, in particular to a dynamic blood pressure monitoring system which improves measurement accuracy.

Background technique

The ambulatory blood pressure measurement device is used to measure the ambulatory blood pressure of a person at regular intervals within 24 hours of the day and night. The ambulatory blood pressure includes systolic blood pressure, diastolic blood pressure, mean arterial pressure, heart rate and their highest and lowest values. Although the current ambulatory blood pressure monitors reduce the chance of occasional blood pressure measurement by repeatedly measuring blood pressure at intervals, they can objectively and truly reflect the changes in blood pressure of the subject within 24 hours, so that doctors can have a better understanding of the blood pressure of the subject. A comprehensive understanding is conducive to the diagnosis of diseases, but the existing ambulatory blood pressure monitors do not take into account the influence of exercise, body position, temperature and other factors on the blood pressure measurement results, which will still affect the measurement accuracy to a certain extent, thereby affecting The doctor's judgment on the subject's disease.

Contents of the invention

The utility model mainly solves the technical problem that the original dynamic blood pressure monitor does not take into account the influence of the body position of the measured person on the blood pressure measurement result, resulting in inaccurate blood pressure measurement results; it provides a dynamic blood pressure monitor with improved measurement accuracy The monitoring system and the monitoring method thereof can correct the blood pressure measurement value according to the body position change of the measured person to obtain accurate blood pressure measurement value, which is helpful for doctors to make correct judgment on the measured person's disease.

At the same time, the utility model solves the problem that the original dynamic blood pressure monitor does not take into account the influence of the measured person's motion state and ambient temperature on the blood pressure measurement results, which causes the blood pressure measurement results and blood pressure changes learned by the doctor to be incomplete. Thereby affecting the technical problem of the doctor's judgment of the disease of the subject; provide a dynamic blood pressure monitoring system and its monitoring method that improves the measurement accuracy, which can also obtain the exercise status and The ambient temperature allows the doctor to make a comprehensive judgment based on the exercise state of the subject, the ambient temperature and the blood pressure value, which is beneficial to the treatment of the disease, and it can also remind the subject to stay relatively still under the temperature change before measuring the blood pressure. In a small environment, ensure that blood pressure is measured normally.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: the dynamic blood pressure monitoring system for improving measurement accuracy of the utility model includes a single-chip microcomputer unit, a dynamic blood pressure acquisition unit, a liquid crystal display unit, a key unit, a gravity The sensing unit and the voice unit, the dynamic blood pressure acquisition unit, the LCD display unit, the button unit, the gravity sensing unit and the voice unit are connected to the single-chip microcomputer unit respectively, and the setting position of the gravity sensing unit is connected with the blood pressure measuring device tied to the patient. The cuff position used is parallel. The working state is set and controlled through the key unit, and the working state and various collected data are displayed by the LCD display unit. The systolic blood pressure, diastolic blood pressure and heart rate of the patient are regularly collected by the ambulatory blood pressure collection unit, and the angle α between the cuff and the horizontal plane is collected by the gravity sensing unit. If the value of the angle α is within the unreasonable range, the single-chip microcomputer unit sends a signal to start the voice unit to remind the patient to change the body position to a reasonable position. The diastolic blood pressure is corrected and displayed separately to obtain a blood pressure value with high accuracy, which is helpful for doctors to make a correct judgment on the disease of the measured person. Because when measuring blood pressure, the "0" point of the sphygmomanometer should be at the same level as the brachial artery and the heart. In the sitting position, the brachial artery is level with the fourth costal cartilage; in the supine position, it is level with the midaxillary line. If the limb is too high, the measured blood pressure is often low, and if the position is too low, the measured blood pressure is high. Therefore, the body position of the subject has a great influence on the blood pressure measurement value, and it needs to be corrected to improve the accuracy of the blood pressure measurement result.

Preferably, the dynamic blood pressure monitoring system with improved accuracy includes a motion sensing unit, which is connected to the single-chip microcomputer unit. The movement state of the patient is collected by the motion sensing unit in real time and sent to the single-chip unit. If the motion sensing unit detects that the patient is in an unreasonable motion state a period of time before the test time point of the dynamic blood pressure collection unit, the single-chip unit outputs a signal to start The voice unit reminds the patient to rest for a period of time, which is conducive to the normal detection of blood pressure. When displaying systolic blood pressure, diastolic blood pressure and heart rate, the LCD display unit also displays the patient's exercise status during the measurement, and marks the exercise status of the blood pressure measurement results, which is convenient for doctors to consider the blood pressure according to the vigorous, moderate or mild exercise status of the measured person. The possible impact of the measurement results can be used to make a more comprehensive judgment, which is beneficial to the treatment of diseases.

Preferably, the dynamic blood pressure monitoring system with improved accuracy includes a temperature sensing unit, which is connected to the single-chip microcomputer unit. The temperature sensing unit collects the ambient temperature of the patient in real time and sends it to the single-chip unit. If the temperature collected in a period of time before the test time point of the dynamic blood pressure collection unit changes sharply, the single-chip unit outputs a signal to start the voice The unit reminds the patient to stay in the environment stably for a period of time, which is conducive to the normal detection of blood pressure. When displaying systolic blood pressure, diastolic blood pressure and heart rate, the LCD display unit also displays the ambient temperature of the patient at the time of measurement, and marks the ambient temperature of the blood pressure measurement results, which is convenient for doctors to consider the possible impact on the blood pressure measurement results according to changes in the ambient temperature. To make a more comprehensive judgment, conducive to disease treatment.

Preferably, the dynamic blood pressure monitoring system with improved accuracy includes a real-time clock unit, which is connected with the single-chip microcomputer unit. It is convenient for timing, and the real-time clock can be displayed on the LCD display unit, and all measurement data and real-time clock are saved at the same time, which is convenient for analysis and query of historical records.

Preferably, the ambulatory blood pressure monitoring system with improved accuracy includes a communication unit connected to the single-chip microcomputer unit, and the communication unit is a wireless or wired communication unit. The ambulatory blood pressure monitoring system can communicate with the host computer or cloud devices by wire or wirelessly, and remotely transmit the monitored blood pressure data, exercise status, body position status and temperature data to the host computer or cloud devices for analysis of personal health parameters and disease Diagnostic guidance.

The dynamic blood pressure monitoring method for improving the measurement accuracy of the utility model is as follows: through the control and setting of the key unit, the systolic blood pressure, diastolic blood pressure and heart rate of the patient are regularly collected by the dynamic blood pressure collection unit and sent to the The single-chip microcomputer unit, the angle α between the cuff and the horizontal plane is collected by the gravity sensing unit and sent to the single-chip microcomputer unit, if the angle α value obtained by the single-chip microcomputer unit is in an unreasonable range, Then the single-chip unit sends a signal to start the voice unit, reminding the patient to change the body position to a reasonable position, and the single-chip unit corrects the measured systolic blood pressure and diastolic blood pressure respectively, and the correction formula is:

Calibration result = actual measurement result × K + b,

K = c × (α)2 + d × (α) + e, where b, c, d, and e are all constants,

The heart rate and corrected systolic and diastolic blood pressures are then displayed by the LCD display unit.

Of course, by setting the key unit, the user can also choose whether to display the actual measured original values of the systolic blood pressure and diastolic blood pressure before correction, or the original value and the corrected value can be displayed at the same time, and the curve of the original value and the corrected value can also be displayed at the same time Graph, the original value and the curve graph of the corrected value are displayed in different colors for separation.

The technical solution corrects the measured blood pressure value according to the body position change of the subject to obtain an accurate blood pressure measurement value, which is beneficial for the doctor to make a correct judgment on the disease of the subject.

When the subject is in the sitting position, when the included angle α is 45 degrees, it is the normal ideal position, when the included angle α is 0 degrees, it is in the horizontal state, when the included angle α is 90 degrees, it is in the vertical state, and the sitting position can be corrected.

The impact range is based on the experimental sampling value. The experimental population comes from different ages, genders, and health status. The total number of people is not less than 400. The measurement is carried out under the standard sitting position, and five gradients are selected within the horizontal angle between 0 and 90 degrees. For data collection, calculate the correlation of other angles and 45 degree measurements using the following formula:

45 degree measurement result = other angle measurement result × K + b, K is the correction coefficient, b is a constant,

K = c × (α)2 + d× (α) + e, where c, d, and e are constants.

The angle of 45 degrees is the normal and ideal position, so the blood pressure value is finally corrected to the 45-degree position.

When the subject is in the supine position, the supine position is the normal position, and the included angle is 0 degrees. There is no compensation for the lying position, which can be recognized by the motion sensing unit.

The ambulatory blood pressure monitoring system includes a motion sensing unit, which is connected to the single-chip microcomputer unit; the monitoring method includes: collecting the motion state of the patient by the motion sensing unit, and sending the motion state information to The single-chip microcomputer unit is processed by the single-chip microcomputer unit, and then sent to the liquid crystal display unit for display. When the liquid crystal display unit displays systolic blood pressure, diastolic blood pressure and heart rate, it simultaneously displays the patient's motion state during measurement; When the motion sensing unit detects that the patient is in an unreasonable motion state t1 minutes before the test time point of the dynamic blood pressure collection unit, the voice unit is activated by the output signal of the single-chip unit to remind the patient to take a rest for t1 minutes before performing blood pressure monitoring. detection. Marking the exercise status of the blood pressure measurement results is convenient for the doctor to consider the possible impact on the blood pressure measurement results according to the vigorous, moderate or mild exercise of the measured person, so as to make a more comprehensive judgment, which is beneficial to disease treatment.

The ambulatory blood pressure monitoring system includes a temperature sensing unit, which is connected to the single-chip microcomputer unit; the monitoring method includes: collecting the ambient temperature of the patient by the temperature sensing unit, and sending the temperature data to Give the single-chip microcomputer unit, through the single-chip microcomputer unit processing, then send the described liquid crystal display unit to display, when the liquid crystal display unit displays systolic blood pressure, diastolic blood pressure and heart rate, it also displays the ambient temperature that the patient is in during the measurement; When the temperature data collected by the temperature sensing unit within t2 minutes before the test time point of the dynamic blood pressure collection unit changes sharply, the voice unit is activated by the output signal of the single-chip microcomputer unit to remind the patient to be in the current environment. Wait for a time greater than or equal to t2 minutes, and then perform blood pressure detection. Marking the ambient temperature of the blood pressure measurement results is convenient for doctors to consider the possible impact on the blood pressure measurement results according to changes in the ambient temperature, so as to make a more comprehensive judgment, which is beneficial to disease treatment.

The ambulatory blood pressure monitoring system includes a communication unit, the communication unit is connected to the single-chip microcomputer unit, and the communication unit is a wireless or wired communication unit; the monitoring method includes: the ambulatory blood pressure monitoring system through the communication unit Communicate with the host computer or cloud device, and remotely transmit the monitored blood pressure data, exercise status, body position status and temperature data to the host computer or cloud device for analysis of personal health parameters and guidance for disease diagnosis.

The beneficial effects of the utility model are: the influence of factors such as the motion state, body position and posture, and the ambient temperature of the measured person on the measurement of blood pressure at regular intervals is reduced, and the blood pressure measurement value is corrected according to the body position change of the measured person. Obtain accurate blood pressure measurement values and improve the accuracy of ambulatory blood pressure monitoring; at the same time, it can obtain not only the blood pressure of the subject, but also the exercise status and ambient temperature of the subject, so that the doctor can according to the exercise status of the subject , The ambient temperature and the blood pressure value are used for comprehensive judgment, which is convenient for doctors to make correct judgments on the disease of the tested person, and is conducive to disease treatment.

Description of drawings

Fig. 1 is a block diagram of a circuit principle connection structure of the ambulatory blood pressure monitoring system for improving measurement accuracy of the present invention.

Fig. 2 is a block diagram of another circuit principle connection structure of the ambulatory blood pressure monitoring system with improved measurement accuracy of the present invention.

In the figure 1. SCM unit, 2. Dynamic blood pressure acquisition unit, 3. LCD display unit, 4. Button unit, 5. Gravity sensing unit, 6. Motion sensing unit, 7. Voice unit, 8. Temperature sensing unit, 9 . Real-time clock unit, 10. Communication unit.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment: the ambulatory blood pressure monitoring system that improves measurement accuracy of the present embodiment, as shown in Figure 1, comprises single-chip microcomputer unit 1, ambulatory blood pressure acquisition unit 2, liquid crystal display unit 3, button unit 4, gravity sensing unit 5, movement Sensing unit 6, temperature sensing unit 8, voice unit 7, real-time clock unit 9 and communication unit 10, dynamic blood pressure collection unit 2, LCD display unit 3, key unit 4, gravity sensing unit 5, motion sensing unit 6, temperature sensing unit Unit 8, voice unit 7, real-time clock unit 9 and communication unit 10 are respectively connected to the single-chip unit 1, and the setting position of the gravity sensing unit 5 is parallel to the position of the blood pressure measuring cuff tied by the patient.

Fig. 2 is a relatively detailed circuit connection block diagram, the single-chip microcomputer unit 1 includes a MCU single-chip microcomputer 11, which is connected with a button 41, an LCD liquid crystal display 31 and a wireless communication module 101, and the MCU single-chip microcomputer is connected to each other through a voice drive circuit 71 and a voice playback device 72 , the gravity sensing unit 5 adopts a gravity sensor 51, the motion sensing unit 6 adopts an acceleration sensor 61, and the temperature sensing unit 8 adopts a temperature sensor 81. The gravity sensor and the acceleration sensor are respectively connected with the MCU single-chip microcomputer, and the output signal of the temperature sensor is connected to the mold of the MCU single-chip microcomputer. The input end of the /digital conversion circuit, the real-time clock unit 9 adopts a crystal oscillator 91, and the crystal oscillator is connected with the timer end of the MCU single-chip microcomputer. The MCU single-chip microcomputer is also connected with an EEPROM memory 12 for storing various test results. The dynamic blood pressure acquisition unit 2 includes an air pump 21, a cuff 22, a pressure sensor 23 and a signal processing circuit 24. The control end of the air pump is connected to the MCU single-chip microcomputer, and a conduit is connected between the air pump and the cuff, and a conduit is also connected between the pressure sensor and the cuff. , the output signal of the pressure sensor is connected with the input end of the analog/digital conversion circuit of the MCU single-chip microcomputer through the signal processing circuit.

The gravity sensing unit can use the ADXL345 three-axis digital output acceleration sensor, which has built-in multiple motion state detection functions with a resolution of 3.9 mg/LSB and can measure changes in tilt angles less than 1.0°. The motion sensing unit can detect the intensity of the subject's movement. For example, through the pedometer algorithm, it can distinguish between slow walking, fast walking, and running, and through vibration detection, it can distinguish the intensity of movements such as jumping.

The monitoring method of the above-mentioned ambulatory blood pressure monitoring system that improves the measurement accuracy is: control and set through the key unit 4, and the systolic blood pressure, diastolic blood pressure and heart rate of the patient are regularly collected by the ambulatory blood pressure acquisition unit 2 and sent to the single-chip microcomputer unit 1. The gravity sensing unit 5 collects the angle α between the cuff and the horizontal plane in real time and sends it to the single-chip microcomputer unit 1, and the motion sensing unit 6 collects the patient's motion state in real time, and sends the motion state information to the single-chip microcomputer unit 1, and the temperature sensing unit 8. Collect the ambient temperature of the patient in real time, and send the temperature data to the single-chip microcomputer unit 1. The above-mentioned collected data is processed by the single-chip microcomputer unit, and then sent to the LCD display unit 3 for display;

The user can set through the button unit, and can choose whether to display the measured original values of the systolic blood pressure and diastolic blood pressure before correction, or choose to display the original value and the corrected value at the same time, and can also display the graph of the original value and the corrected value at the same time. The graphs of original value and corrected value are displayed in different colors to separate;

If the motion sensing unit 6 detects that the patient is in an unreasonable motion state 5 minutes before the test time point of the ambulatory blood pressure collection unit 2, the voice unit 7 is activated by the output signal of the single-chip microcomputer unit 1 to remind the patient to rest for 5 minutes before blood pressure detection ;

If the temperature data collected by the temperature sensing unit 8 within 5 minutes before the test time point of the ambulatory blood pressure collection unit 2 changes drastically, the voice unit 7 is activated by the output signal of the single-chip microcomputer unit 1, reminding the patient to wait for 5 minutes in the current environment to 10 minutes, and then blood pressure test;

The single-chip microcomputer unit 1 corrects the measured systolic blood pressure and diastolic blood pressure respectively, and the correction formula is:

Calibration result = actual measurement result × K + b,

K = c × (α)2 + d × (α) + e,

Where b, c, d, and e are all constants. In this embodiment, b, c, d, and e of systolic blood pressure are 0, 0.000002, 0.000489, and 0.973684 respectively; b, c, d, and e of diastolic blood pressure are respectively 0 , 0.000007, 0.000422, 0.967742.

When displaying the heart rate, systolic blood pressure, and diastolic blood pressure, the LCD display unit also displays the patient's exercise status and the ambient temperature of the patient during measurement;

The ambulatory blood pressure monitoring system communicates wirelessly or wiredly with the host computer or cloud device through the communication unit 10, and the single-chip unit analyzes the ambulatory blood pressure data in the cycle, including heart rate, diastolic blood pressure, systolic blood pressure, average value, maximum value, minimum value, dynamic graph and exercise Status, body position status and temperature data are remotely transmitted to the host computer or cloud device as needed for the analysis of personal health parameters and guidance for disease diagnosis.

Claims (5)

1. An ambulatory blood pressure monitoring system that improves measurement accuracy, characterized in that it includes a single-chip microcomputer unit (1), an ambulatory blood pressure acquisition unit (2), a liquid crystal display unit (3), a button unit (4), and a gravity sensing unit ( 5) and voice unit (7), ambulatory blood pressure collection unit (2), LCD display unit (3), button unit (4), gravity sensing unit (5) and voice unit (7) and the single-chip microcomputer unit respectively (1) are connected, and the setting position of the gravity sensing unit (5) is parallel to the position of the blood pressure measuring cuff tied by the patient. 2. The ambulatory blood pressure monitoring system for improving measurement accuracy according to claim 1, characterized in that it comprises a motion sensing unit (6), and the motion sensing unit (6) is connected to the single-chip microcomputer unit (1). 3. The ambulatory blood pressure monitoring system for improving measurement accuracy according to claim 2, characterized in that it comprises a temperature sensing unit (8), and the temperature sensing unit (8) is connected to the single-chip microcomputer unit (1). 4. The ambulatory blood pressure monitoring system for improving measurement accuracy according to claim 1, 2 or 3, characterized in that it includes a real-time clock unit (9), and the real-time clock unit (9) is connected to the single-chip microcomputer unit (1) . 5. The ambulatory blood pressure monitoring system for improving measurement accuracy according to claim 1, 2 or 3, characterized in that it includes a communication unit (10), the communication unit (10) is connected to the single-chip microcomputer unit (1), and the communication Unit (10) is a wireless or wired communication unit.