CN106343990A - Finger-pressing sphygmomanometer and measuring method thereof - Google Patents

Abstract

The invention discloses a finger-press type electronic sphygmomanometer and a measuring method thereof, belonging to the finger-press type sphygmomanometer. The ECG signal measured by the ECG sensor enters the ECG processing circuit module to complete signal processing, and transmits the signal to the detection circuit module; the blood volume finger pressure sensor transmits to the detection module circuit; the detection module circuit compares the measured ECG signal with the The blood volume signal is detected according to the autonomous algorithm written in the internal program, and the detection result is input to the central processing module; , complete local display on the display screen and upload to the cloud through the wireless transmission module, so as to realize real-time monitoring of health data. The invention has the advantages of low cost, small volume and high monitoring precision. Compared with the existing armband type and wristband type sphygmomanometer, the invention has simple and quick measurement and low cost.

Description

An acupressure sphygmomanometer and its measuring method

technical field

The invention relates to an acupressure sphygmomanometer, in particular to an acupressure sphygmomanometer and a measuring method thereof.

Background technique

With the rapid development of my country's economy and the continuous improvement of people's living standards, non-invasive automatic measurement (referred to as electronic sphygmomanometer) has gradually replaced the traditional mercury sphygmomanometer and has become a must-have for many families. The electronic sphygmomanometer overcomes the shortcomings of mercury sphygmomanometers such as strong professionalism in operation and not easy to carry, and is more convenient and faster. First of all, since the electronic sphygmomanometer is used for daily monitoring of the user's blood pressure, it is required to have high measurement accuracy; secondly, the electronic sphygmomanometer is mainly used for daily monitoring, therefore, as a daily portable electronic product, it is required to be miniaturized; finally, due to Electronic sphygmomanometers are mainly for ordinary consumers, therefore, they are required to be easy to operate.

At present, the existing electronic sphygmomanometers include upper arm type and wrist type: Patent No. 2014800381092 discloses an upper arm type electronic sphygmomanometer, which obtains the pulse wave signal by extracting the pulse wave signal representing the measured part overlapping with the cuff pressure signal The pulse wave amplitude column at the signal location, for the obtained pulse wave amplitude column, produces an amplitude envelope, and calculates the corresponding systolic and diastolic blood pressure by detecting the maximum and minimum points of the envelope, but requires a separate cuff , the equipment is bulky and inconvenient to carry around for measurement; Patent No. 2013100274064 discloses a wrist-type electronic sphygmomanometer, including a cuff, a pressure sensor, an arterial volume sensor, a calculation device, etc. diastolic and systolic blood pressure, but each measurement needs to wear its wrist cuff, and there is also the problem of inconvenient portability. At present, there is no electronic sphygmomanometer that is portable and does not need to wear a cuff.

Pulse Transit Time (PTT) has been proven to be an important reference index for the degree of arteriosclerosis, and the corresponding blood pressure can be indirectly calculated according to the value of PPT. Figure 1 (A-B) shows the calculation method of pulse transit time (PTT). Figure 1(A) is the measured ECG waveform, R represents the peak value of the ECG waveform, Figure 1(B) reflects the blood volume waveform measured by the finger pressure sensor, PTT can be defined as, in In the same pulse cycle, the time difference between the peak value of the electrocardiogram waveform and a predetermined threshold characteristic point of the corresponding blood volume waveform, the threshold characteristic point can be the midpoint, peak or foot point of the blood volume waveform. Therefore, the corresponding pulse transit time can be calculated through the measured ECG waveform diagram and blood volume waveform diagram according to a specific algorithm.

The blood volume sensor usually adopts a photoelectric sensor, which is measured by a photoelectric sensor attached to the skin. However, the degree of contact between the photoelectric sensor and the skin of the commonly used cuff-type measuring device depends on the degree of fit between the cuff and the skin. The position of the cuff during the measurement process and the inflation and deflation process of the cuff greatly affect the measurement results. Therefore, blood pressure cannot be accurately measured.

Contents of the invention

Purpose of the invention: In view of the above-mentioned problems, the present invention provides a convenient and fast finger pressure blood pressure monitor and its measurement method, which uses a finger pressure sensor to realize convenient and high-precision blood pressure measurement through finger contact.

Technical solution: In order to achieve the above purpose, the technical solution adopted by the present invention includes a sphygmomanometer and a method for measuring blood pressure with a sphygmomanometer;

Sphygmomanometer includes: blood volume finger pressure sensor, USB socket, SD card slot, finger pressure ECG sensor, power management circuit module, ECG processing circuit module, detection circuit module, rechargeable power supply, SD card read and write circuit module, oscillation circuit and central processing module;

The oscillating circuit is connected with the electrocardiographic processing circuit module, the output end of the acupressure electrocardiogram sensor is connected with the electrocardiographic processing circuit module through the detection circuit module, and the output end of the electrocardiographic processing circuit module is connected with the input end of the central processing module; The central processing module is in the form of an SD card, the central processing module is inserted into the SD card slot, and the SD card read-write circuit module realizes the connection with the finger pressure electrocardiogram sensor, the power management circuit module, the ECG processing circuit module and the detection circuit module;

The ECG signal measured by the ECG sensor enters the ECG processing circuit module to complete signal processing, and transmits the signal to the detection circuit module; the blood volume finger pressure sensor transmits to the detection module circuit; the detection module circuit compares the measured ECG signal with the The blood volume signal is detected according to the algorithm written in the software program, and the detection result is input to the central processing module; the central processing module is connected with the LCD screen, and the calculation result is output to the LCD screen for display, and at the same time through the wireless transmission part , and upload the measured results to the network.

The detection module circuit includes: a blood volume sensor input part, used to receive the blood volume signal input from the blood volume finger pressure sensor; a blood volume signal detection part, used to detect the blood volume threshold; used to receive the finger pressure type electrocardiogram sensor The input ECG signal; the ECG signal detection part is used for receiving the ECG signal input by the ECG processing circuit module, and detecting the peak value R of the ECG signal; the oscillator is used for generating an internal clock for the whole circuit.

The central processing module includes: a micro-central processing unit and a wireless transmission module, the output of the micro-central processing unit is connected to the wireless transmission module; the micro-central processing unit includes: a pulse transmission time calculation unit, a display processing unit and a wireless transmission unit; The pulse transmission time calculation part is used to calculate the pulse transmission time according to the detected blood volume signal and ECG signal, and completes the calculation of the blood pressure value according to the algorithm written in the software program; the display processing part is used to convert the measured data It is transmitted to the LCD screen; the wireless transmission part is used to upload the measured data to the network to complete the network storage.

The liquid crystal display is connected to the front of the shell, and there are two blood volume finger pressure sensors, which are located on the left and right sides of the liquid crystal display on the front of the shell, and are used to measure the blood volume waveform curve; there are two finger pressure electrocardiogram sensors, which are respectively located on the back of the shell The left and right sides are used to measure the waveform curve of the ECG; the central processing module is connected with the blood volume finger pressure sensor and the finger pressure ECG sensor, and is used to calculate the blood pressure value based on the curve signal obtained by the sensor; the USB socket and the SD card slot are located on both sides of the shell. On the side wall; power management circuit module, ECG processing circuit module, detection circuit module, rechargeable power supply 10, SD card read and write circuit module, oscillation circuit and central processing module are connected in the housing.

The blood volume finger pressure sensor is a photoelectric sensor; or the blood volume finger pressure sensor is an impedance sensor; the blood volume sensor is a component for measuring blood volume in an electronic sphygmomanometer.

The finger pressure electrocardiogram sensor is a finger pressure capacitive coupling sensor, which is a component for measuring ECG waveforms in an electronic sphygmomanometer, and is used for detecting ECG waveform signals.

A method for measuring blood pressure with a sphygmomanometer, comprising the following steps:

a. The measurer presses the left and right thumbs of the left and right blood vessel volume finger pressure sensors at the same time, and the left and right index fingers simultaneously presses the left and right finger pressure ECG sensors, similar to pinching both sides of the sphygmomanometer with both hands at the same time, the blood vessel volume finger pressure sensor Simultaneous reading of plethysmogram and ECG with finger pressure ECG sensor;

b. Find the peak R of the ECG;

c. Calculate the PPG peak value and pulse transit time PTT of the blood vessel volume map;

d. Calculation of vasodiastolic and systolic blood pressure;

e. Display the measurement data and upload the data to the network.

Beneficial effects, due to the adoption of the above scheme, the wristband and air pressure device in the traditional sphygmomanometer are omitted, while the finger pressure type blood volume sensor and the electrocardiogram sensor used in the present invention are low in cost, greatly reducing the cost of the sphygmomanometer; , due to the adoption of the above scheme, the blood pressure measurement is more convenient and fast, and the blood pressure measurement can be carried out at any time without the assistance of others, and the data will be automatically uploaded to the network, which is beneficial to the multiple times and long-term monitoring of the blood pressure of the measured person; in addition, this The volume of the invention is greatly reduced, which is beneficial for users to carry it with them, and can quickly monitor blood pressure anytime and anywhere.

Finger pressure sphygmomanometer includes hardware part and software part. The hardware mainly includes rechargeable power supply, finger pressure vessel volume sensor, ECG sensor, micro central processing unit, wireless transmission module and display screen. The sensor signal micro-central processor uses a specific algorithm to complete the calculation of the blood pressure value, completes the local display on the display screen and uploads it to the cloud through the wireless transmission module, so as to realize real-time monitoring of health data. The invention has the advantages of low cost, small volume and high monitoring precision. Compared with the existing armband type and wristband type sphygmomanometer, the invention has simple and quick measurement and low cost.

Advantages: Specifically, by finger pressing, the collection of blood volume diagram and electrocardiogram data is realized, and the blood pressure of the subject is calculated by using an independent algorithm, and the data is displayed and uploaded to the network. Advantages of convenience and automatic data upload and storage.

Description of drawings:

Fig. 1A is a graph showing the measured electrocardiogram.

FIG. 1B is a graph showing measured blood volume curves and pulse transit times.

Fig. 2A is a front layout structure diagram of the present invention.

Fig. 2B is a diagram of the rear layout of the present invention.

Fig. 3 is a block diagram showing the internal circuit of the electronic sphygmomanometer.

Fig. 4 is a block diagram showing the functional configuration of the electronic sphygmomanometer.

Fig. 5 is a flow chart showing measurement by the sphygmomanometer.

In the figure, 1. shell; 2. blood volume finger pressure sensor; 3. liquid crystal display; 4. USB interface; 5. SD card slot; 6. finger pressure electrocardiogram sensor; 7. power management circuit module; 8. heart Electric processing circuit module; 9. Detection circuit module; 10. Rechargeable power supply; 11. SD card reading and writing circuit module; 12. Oscillating circuit; 13. Central processing module; 901. Blood volume sensor input unit; 902. Blood volume signal Detection unit; 903, ECG signal processing circuit module; 904, ECG signal detection unit; 1301, pulse transmission time calculation unit; 1302, display processing unit; 1303, wireless transmission unit.

Specific implementation plan:

The technical scheme adopted by the present invention includes a sphygmomanometer and a method for measuring blood pressure with a sphygmomanometer;

The sphygmomanometer includes: blood volume finger pressure sensor 2, USB socket 4, SD card slot 5, finger pressure electrocardiogram sensor 6, power management circuit module 7, ECG processing circuit module 8, detection circuit module 9, rechargeable power supply 10, SD card reading and writing circuit module 11, oscillation circuit 12 and central processing module 13;

The oscillating circuit 12 is connected with the electrocardiographic processing circuit module 8, and the output end of the acupressure electrocardiogram sensor 6 is connected with the electrocardiographic processing circuit module 8 through the detection circuit module 9, and the output end of the electrocardiographic processing circuit module 8 is connected with the central processing module 13. The input terminal is connected; the central processing module 13 is an SD card form, and the central processing module 13 is inserted in the SD card slot 5, and is realized by the SD card reading and writing circuit module 11 and the finger pressure type electrocardiogram sensor 6, the power management circuit module 7, ECG processing circuit module 8 is connected with detection circuit module 9;

The ECG signal measured by the ECG sensor 6 enters the ECG processing circuit module 8 to complete signal processing, and the signal is transmitted to the detection circuit module 9; the blood volume finger pressure sensor 2 is transmitted to the detection module circuit 9; The obtained ECG signal and blood volume signal are detected according to the algorithm written in the software program, and the detection result is input to the central processing module 13; the central processing module 13 is connected with the liquid crystal display 3, and the calculation result is output to the liquid crystal display Display on the screen, and upload the measured results to the network through the wireless transmission unit.

The detection module circuit 9 includes: a blood volume sensor input part 901, which is used to receive the blood volume signal input from the blood volume finger pressure sensor 2; a blood volume signal detection part 902, which is used to detect the blood volume threshold; The electrocardiographic signal input by the pressure electrocardiogram sensor 6; the electrocardiographic signal detection part 904 is used to receive the electrocardiographic signal input by the electrocardiographic processing circuit module 8, and detects the peak value R of the electrocardiographic signal; the oscillator 12 is used to generate an internal clock, for the entire circuit.

Described central processing module 13 comprises: micro central processing unit and wireless transmission module, and the output end of micro central processing unit is connected with wireless transmission module; Micro central processing unit comprises: pulse transmission time calculation part 1301, display processing part 1302 and wireless The transmission part 1303; the pulse transmission time calculation part 1301 is used to calculate the pulse transmission time according to the detected blood volume signal and the electrocardiogram signal, and complete the calculation of the blood pressure value according to the algorithm written in the software program; the display processing part 1302, It is used to transmit the measured data to the liquid crystal display screen 3; the wireless transmission unit 1303 is used to upload the measured data to the network for network storage.

The liquid crystal display 3 is connected to the front of the housing, and there are two blood volume finger pressure sensors 2, which are located on the left and right sides of the liquid crystal display 3 on the front of the housing, and are used to measure the blood volume waveform curve; there are two finger pressure electrocardiogram sensors 6, They are respectively located on the left and right sides of the back of the shell, and are used to measure the waveform curve of the electrocardiogram; the central processing module 13 is connected with the blood volume finger pressure sensor 2 and the finger pressure electrocardiogram sensor 6, and is used to calculate the blood pressure value based on the curve signal obtained by the sensor; USB socket 4 and SD card slot 5 are located on the two side walls of the shell; power management circuit module 7, ECG processing circuit module 8, detection circuit module 9, rechargeable power supply 10, SD card read and write circuit module 11, oscillation circuit 12 and central processing Module 13 is connected within the housing.

The blood volume finger pressure sensor is a photoelectric sensor; or the blood volume finger pressure sensor is an impedance sensor; the blood volume sensor is a component for measuring blood volume in an electronic sphygmomanometer.

The finger pressure electrocardiogram sensor is a finger pressure capacitive coupling sensor, which is a component for measuring ECG waveforms in an electronic sphygmomanometer, and is used for detecting ECG waveform signals.

A method for measuring blood pressure with a sphygmomanometer, comprising the following steps:

a. The measurer presses the left and right thumbs of the left and right blood vessel volume finger pressure sensors 2 at the same time, and the left and right index fingers simultaneously presses the left and right finger pressure electrocardiogram sensors 6, which is similar to pinching both sides of the sphygmomanometer with both hands at the same time. The pressure sensor 2 and the finger pressure electrocardiogram sensor 6 read the plethysmogram and the electrocardiogram simultaneously;

b. Find the peak R of the ECG;

c. Calculate the PPG peak value and pulse transit time PTT of the blood vessel volume map;

d. Calculation of vasodiastolic and systolic blood pressure;

e. Display the measurement data and upload the data to the network.

The software involved in the present invention has been registered by the National Computer Software Registration Center, and the software includes self-designed algorithms to complete data processing, display, and uploading to the network.

Embodiments of the present invention will be described below in conjunction with the accompanying drawings. In the following description, the same reference numerals are assigned to the same members and constituent elements. These names and functions are also the same.

As shown in Figure 2, a finger-press type electronic sphygmomanometer (hereinafter referred to as a sphygmomanometer), specifically includes a housing 1, a blood volume sensor 2, a display screen 3, a USB interface 4, an SD card slot 5, and a finger-press type heart Electric sensor 6 is formed. The blood vessel volume sensor 2 is located on the front of the housing 1, one on the left and one on the left, the liquid crystal display 3 is located on the center of the front of the housing 1, and the finger pressure ECG sensor 6 is located on the back of the housing 1, one on the left and one on the left, USB The interface 4 is located on the left side of the housing 1 for data transmission and power charging, and the SD card slot 5 is located on the right side of the housing 1 .

As shown in Figure 3, the internal circuit system of the sphygmomanometer specifically includes that the internal circuit system includes a USB socket 4, a power management circuit module 7, an electrocardiographic processing circuit module 8, a detection circuit module 9, a rechargeable power supply 10, and an SD card. Read-write circuit module 11, SD card slot 5, oscillation circuit 12, micro central processing unit and wireless transmission module 13 are in SD card form, insert in the SD card slot 5, realize and other circuits by SD card read-write circuit module 11, comprise The connection of the electrocardiographic processing circuit module 8, the detection circuit module 9, the rechargeable power supply 10, the oscillation circuit 12 and other module circuits.

With reference to Fig. 2 Fig. 3, electrocardiographic sensor 6 shown in Fig. 2 is connected with Fig. 3 central electrical processing circuit module 8, and the electrocardiographic signal measured by electrocardiographic sensor 6 enters electrocardiographic processing circuit module 8 to complete signal processing, and signal transmission To the detection circuit module 9; the blood volume sensor in Fig. 2 is transmitted to the detection module circuit 9; the detection module detects the measured ECG signal and blood volume signal according to the prescribed algorithm, and inputs the detection result to the central processing unit The module 13 completes the calculation of the blood pressure value according to the prescribed algorithm for the detection results; the micro central processing unit and the wireless transmission module 13 are connected with the display, output the calculation results to the display for display, and upload the measured results to the The internet.

Fig. 4 is a block diagram showing a functional configuration for blood pressure measurement and calculation. Read and execute the program stored in the module by the micro central processing unit module 13, each function shown in Figure 4 is mainly inside the central processing unit, but a part of it can be passed through the device structure shown in Figure 2 and Figure 3 Or circuit hardware structure realization.

As shown in Figure 4, the detection module circuit 9 includes: a blood volume sensor input part 901, used to receive the blood volume signal input from the blood volume sensor 2; a blood volume signal detection part 902, used to detect the blood volume threshold; The ECG signal input by the ECG sensor 6 ; the ECG signal detection unit 904 is used to receive the ECG signal input from the ECG signal processing module circuit 8 and detect the peak value R of the ECG signal. As shown in FIG. 4, the oscillator 12 is used to generate an internal clock for the entire circuit. As shown in Figure 4, the micro central processing unit and the wireless transmission module 13 include: a pulse transmission time calculation part 1301, which is used to calculate the pulse transmission time according to the detected blood volume signal and ECG signal, and to complete the blood pressure value according to a prescribed algorithm. calculation; the display processing unit 1302 is used to transmit the measured data to the display screen 3; the wireless transmission unit 1303 is used to upload the measured data to the network for network storage.

Fig. 5 is a flow chart of measuring action by means of the acupressure sphygmomanometer 1, and the specific steps are as follows:

a. The measurer presses the left and right thumbs of the left and right blood vessel volume finger pressure sensors 2 at the same time, and the left and right index fingers simultaneously presses the left and right finger pressure electrocardiogram sensors 6, which is similar to pinching both sides of the sphygmomanometer with both hands at the same time. The pressure sensor 2 and the finger pressure electrocardiogram sensor 6 read the plethysmogram and the electrocardiogram simultaneously;

b. Find the peak R of the ECG;

c. Calculate the PPG peak value and pulse transit time PTT of the blood vessel volume map;

d. Calculation of vasodiastolic and systolic blood pressure;

e. Display the measurement data and upload the data to the network.

Claims (7)

1. a kind of finger pressing type sphygomanometer it is characterised in that: sphygomanometer includes: blood volume finger sensor, usb socket, sd draw-in groove, Finger pressing type electrocardiography transducer, electric power management circuit module, electrocardio processing circuit module, testing circuit module, rechargable power supplies, Sd card read/write circuit module, oscillating circuit and central processing module；

Oscillating circuit is connected with electrocardio processing circuit module, and finger pressing type electrocardiography transducer outfan passes through testing circuit module It is connected with electrocardio processing circuit module, the outfan of electrocardio processing circuit module is connected with the input of central processing module；Institute The central processing module stated be sd card form, central processing module insertion sd draw-in groove in, by sd card read/write circuit module realize with Finger pressing type electrocardiography transducer, electric power management circuit module, electrocardio processing circuit module and testing circuit module connect；

The EGC sensor institute thought-read signal of telecommunication enters electrocardio processing circuit module and completes signal processing, and transmits a signal to detect Circuit module；Blood volume finger sensor transmits to detection module circuit；Detection module circuit to measured electrocardiosignal with Blood plethysmogram signal, the autonomous algorithm according to write inside software program is detected, and testing result is inputted to central authorities' process Module；Central processing module is connected with LCDs, result of calculation is exported and is shown to LCDs, passes through simultaneously Wireless transmission means, measured result is uploaded to network.

2. according to claim 1 a kind of finger pressing type sphygomanometer it is characterised in that: described detection module circuit includes: blood Volume sensor input unit, for receiving the blood plethysmogram signal from the input of blood volume finger sensor；Blood plethysmogram signal test section, For detecting blood volume threshold；For receiving the electrocardiosignal of finger pressing type electrocardiography transducer input；ECG signal sampling portion, uses In the electrocardiosignal receiving the input of electrocardio processing circuit module, and detect electrocardiosignal peak value r；When agitator is used for producing inside Clock, for whole circuit.

3. according to claim 1 a kind of finger pressing type sphygomanometer it is characterised in that: described central processing module includes: micro- Central processing unit and wireless transport module, the outfan of micro- central processing unit is connected with wireless transport module；Micro- central processing unit Including: pulse transit time calculating part, display processing portion and wireless transmission means；Pulse transit time calculating part, for according to inspection The blood plethysmogram signal measuring and electrocardiosignal calculate pulse transit time, and the autonomous algorithm according to write inside software program, Complete the calculating of pressure value；Display processing portion, for being transferred to LCDs by data measured；Wireless transmission means, for inciting somebody to action Data measured is uploaded to network and completes network preservation.

4. according to claim 1 a kind of finger pressing type sphygomanometer it is characterised in that: LCDs are connected to housing front, Blood volume finger sensor totally two, positioned at the housing front LCDs left and right sides, for measuring blood volume wavy curve； Finger pressing type electrocardiography transducer has two, is located at the shell rear surface left and right sides respectively, for measuring electrocardiagraphic wave sigmoid curves；In Centre processing module is connected with blood volume finger sensor and finger pressing type electrocardiography transducer, for the song being obtained based on sensor Line signal of change pressure value；Usb socket and sd draw-in groove 5 are located on shell two side；Electric power management circuit module, electrocardio process electricity Road module, testing circuit module, rechargable power supplies, sd card read/write circuit module, oscillating circuit and central processing module are connected to In housing.

5. according to claim 1 a kind of finger pressing type sphygomanometer it is characterised in that: described blood volume finger sensor be light Electric transducer；Or described blood volume finger sensor is impedance transducer；Described blood volume sensor is in electric sphygmomanometer For measuring the component of blood volume.

6. according to claim 1 a kind of finger pressing type sphygomanometer it is characterised in that: described finger pressing type electrocardiography transducer is Finger pressing type capacitive coupled sensors, are the component measuring ecg wave form in electric sphygmomanometer, for detecting ecg wave form signal.

7. a kind of measuring method of the finger pressing type sphygomanometer described in claim 1 is it is characterised in that specifically comprise the following steps that

A. right-hand man's thumb is pinned the two capacity of blood vessel finger sensor in left and right by gauger simultaneously, and right-hand man's forefinger is pinned simultaneously The two finger pressing type electrocardiography transducers in left and right, pinch sphygomanometer both sides, described capacity of blood vessel finger pressure sensing similar to two handss simultaneously Device and finger pressing type electrocardiography transducer read photoplethysmogram and electrocardiogram simultaneously；

B. find electrocardiogram peak value r peak value；

C. photoplethysmogram ppg peak value and Pulse transit time ptt are calculated；

D. vasodilation pressure, systolic pressure are calculated；

E. show measurement data, and upload data to network.