CN106343987B - A kind of graphene pulse wave of multiple points monitoring of blood pressure intelligent wearable device - Google Patents

Abstract

The invention discloses a graphene multi-point pulse wave blood pressure monitoring smart wearable device, comprising a wearable device body for wearing on human hands, and a plurality of graphene pulse waves for collecting pulse waves are arranged on the wearable device body sensor and a background noise sensor for collecting background noise; the body of the smart wearable device is also provided with a circuit module connected to the graphene pulse wave sensor and the background noise sensor, and the circuit module includes a processing chip and a power supply for power supply; Described graphene pulse wave sensor is several, is respectively arranged on the finger pulp of left and right hands and wrist pulse place. The present invention can not only obtain accurate pulse frequency and pulse wave characteristic information, but also obtain blood flow velocity and blood pressure value by using the time delay of pulse wave signals at three different positions.

Description

A graphene multi-point pulse wave blood pressure monitoring smart wearable device

technical field

The invention relates to an intelligent wearable device that uses a graphene sensor to monitor blood pressure.

Background technique

With the development of social economy and the improvement of people's living standards, cardiovascular and cerebrovascular diseases have gradually replaced common infectious diseases and become the number one killer of human beings. Hypertension is the chief culprit of cardiovascular and cerebrovascular diseases, which has the characteristics of high incidence rate and low control rate. The normal blood pressure of an adult is about 120/80, and it can be dangerous if it is too high or too low. According to statistics, there are about 90 million hypertensive patients in the country, and among them, only 4.1% of them have effectively controlled blood pressure in urban areas, and only 1.2% in rural areas. Excessive blood pressure can damage important organs such as the heart, brain, and kidneys, causing disease, stroke, myocardial infarction, and other serious fatal and disabling events. Therefore, it is very important to be able to measure one's own blood pressure status conveniently and accurately, to know one's own physical condition in time and to take measures.

There are three types of sphygmomanometers commonly used in the market today: mercury column sphygmomanometer, electronic sphygmomanometer and barometer sphygmomanometer. Mercury column sphygmomanometers have higher measurement accuracy and stability, but because they need to be used with a stethoscope to monitor the sound, they have higher technical requirements for users; while electronic sphygmomanometers are mainly divided into wrist-type and arm-type, portable More convenient, it can automatically measure heart rate and blood pressure at one time, but this kind of sphygmomanometer will be subject to many restrictions, the noise of the surrounding environment, the up and down sliding and friction of the cuff, etc., may have a certain impact on the measurement results; the barometer type The sphygmomanometer is shaped like a clock and uses the mechanical action of the head to indicate the blood pressure reading. The rest of this sphygmomanometer is basically the same as the mercury column sphygmomanometer, but its accuracy is not as good as the mercury column sphygmomanometer. The common feature of these sphygmomanometers is that they are not very portable and have high technical requirements.

Contents of the invention

Aiming at the above-mentioned technical problems, the present invention provides a graphene multi-point pulse wave blood pressure monitoring smart wearable device, which can be placed on the human hand to measure the human pulse wave to measure the heart rate and human blood pressure. It is simple, practical, and easy to carry .

In order to solve the above technical problems, the technical solution adopted by the present invention is: a graphene multi-point pulse wave blood pressure monitoring intelligent wearable device, including a wearable device body for wearing on the human hand, and the wearable device body is provided with several A graphene pulse wave sensor for collecting pulse waves and a background noise sensor for collecting background noise; the wearable device body is also provided with a circuit module connected with the graphene pulse wave sensor and the background noise sensor, and the circuit module includes a processing A chip and a power supply for power supply; there are several graphene pulse wave sensors, which are respectively arranged on the finger pulps of the left and right hands and the wrist pulse. The present invention can not only obtain accurate pulse frequency and pulse wave characteristic information, but also obtain blood flow velocity and blood pressure value by using the time delay of pulse wave signals at three different positions.

As a preference, there are 6 graphene sensors, which are respectively arranged at the pulp of the thumb, the pulp of the middle finger and the pulse of the wrist of the left and right hands.

As a preference, there are two background noise sensors, which are respectively placed at the non-pulse positions of the left and right wrists.

As an improvement, the graphene pulse wave sensor at the wrist pulse place and the background noise sensor at the non-pulse place of the wrist are all contact type graphene sensors; the contact type graphene sensor includes a flexible circuit board, and the flexible circuit board There is a groove on the circuit board; it also includes a graphene force-sensitive elastomer film laid on the flexible circuit board, and the graphene force-sensitive elastomer film covers the groove; the two ends of the graphene force-sensitive elastomer film An electrode is provided; the electrode is connected to the circuit module; the side of the graphene force-sensitive elastomer film in contact with the human body is provided with a force-sensitive contact, and the position of the force-sensitive contact corresponds to the position of the groove. The background noise sensor is mainly used to eliminate the background noise during pulse wave monitoring at the wrist, because the human wrist has many muscle groups and is susceptible to external interference. Therefore, it is necessary to suppress the background noise of the pulse wave sensor at the wrist. In order to ensure the effectiveness and consistency of background noise monitoring, the background noise sensor should be the same as the graphene sensor for collecting pulse waves at the wrist. At the same time, from the perspective of sensing sensitivity, the use of suspended groove structure and force-sensitive contact structure can significantly improve the monitoring sensitivity of weak pressure and strain. Among them, the force-sensitive contact needs to be in contact with the skin during use.

As an improvement, the graphene pulse wave sensors of the thumb and middle finger are all flexible patch graphene sensors; the flexible patch graphene sensors include graphene force laid on the wearable device body. Sensitive elastomer film, the two ends of described graphene force-sensitive elastomer film of described flexible patch type graphene sensor are provided with electrodes, and electrode is connected with circuit module by wire; The wires are fixed on the body of the wearable device; the fixed wires are several groups spanning the left and right sides of the wire; and the wires can shuttle through the fixed wires. The graphene flexible patch sensor structure is adopted, and the graphene force-sensitive elastomer film is directly attached to the smart wearable device, which enhances the elastic stretch performance of the sensor and improves the wearing comfort of the smart wearable device.

As an improvement, the circuit module also includes a wireless transmission module. It is used to wirelessly transmit the monitored data to the outside world.

As an improvement, the circuit module is arranged at the back of the hand. The back of the hand has less functionality, and the circuit module is placed on the back of the hand to minimize the hindrance to the movement of the hand.

As an improvement, the circuit module further includes a signal amplification circuit and a signal conversion circuit. The signal amplification circuit amplifies the electrical signal sent by the graphene sensor, and the signal conversion circuit converts the amplified signal into a digital signal.

As an improvement, the body of the wearable device is provided with a display screen connected to the processing chip. It is used to display the monitored blood pressure and heart rate information, which is convenient for users to view in real time.

As a preference, the wearable device body is a glove.

The benefits of the present invention are: the pulse and blood pressure monitoring intelligent wearable device with the above structure is made of graphene sensor, which has the advantages of light weight, good flexibility, and portability; the pulse wave is used to measure blood pressure and heart rate, which has high efficiency and accuracy.

Description of drawings

Fig. 1 is a schematic diagram of the front view structure of the present invention.

Fig. 2 is a rear view structural schematic diagram of the present invention.

Fig. 3 is a schematic circuit diagram of the present invention.

Fig. 4 is a schematic diagram of a cross-sectional structure of a contact graphene sensor.

Fig. 5 is a structural schematic diagram of a flexible patch-type graphene sensor.

Fig. 6 is a schematic diagram of a cross-sectional structure of a flexible patch-type graphene sensor.

Marks in the figure: 101 middle finger sensor, 102 thumb sensor, 103 wrist sensor, 104 background noise sensor, 105 wearable device body, 107 circuit module, 201 power supply, 202 wireless transmission module, 203 processing chip, 301 flexible circuit board, 302 groove , 303 electrodes, 304 graphene force-sensitive elastomer films, 305 force-sensitive contacts, 306 wires, 307 fixed lines.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is described in detail.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figures 1 to 6, the present invention includes a wearable device body 105, the wearable device body 105 is preferably a glove, and several graphene pulse wave sensors for collecting pulse waves and background noise sensors for collecting pulse waves are arranged on it. The background noise sensor 104; graphene pulse wave sensor preferably is 6, is respectively arranged on the thumb pulp of left and right hands, middle finger pulp and wrist pulse place. That is, the middle finger sensor 101 , the thumb sensor 102 , the wrist sensor 103 , and the background noise sensor 104 . There are 2 background noise sensors, which are placed on the non-pulse parts of the left and right wrists.

The wearable device body 105 is also provided with a circuit module 107 connected to the graphene pulse wave sensor and the background noise sensor 103, and the circuit module 107 includes a processing chip 203 and a power supply 201 for power supply. The circuit module 107 is provided at the back of the hand. The circuit module 107 also includes a wireless transmission module 202 . The wearable device body 105 is also provided with a display screen connected to the processing chip 203 .

The middle finger sensor 101 and the thumb sensor 102 are all flexible patch-type graphene sensors; the flexible patch-type graphene sensor includes a graphene force-sensitive elastomer film 304 laid on the wearable device body 105, and the graphene force-sensitive The two ends of the elastomer film 304 are provided with electrodes 303; the electrodes 303 are connected to the circuit module 107 through wires 306; The wires 307 are several groups across the left and right sides of the wire 306; and the wire 306 can shuttle within the fixed wire 307.

The graphene pulse wave sensor (wrist sensor 103) at the wrist pulse place and the background noise sensor 104 at the non-pulse place of the wrist are all contact type graphene sensors; The circuit board 301 has a groove 302; it also includes a graphene force-sensitive elastomer film 304 laid on the flexible circuit board 301, and the graphene force-sensitive elastomer film 304 covers the groove 302; Electrodes 303 are arranged at both ends of the sensitive elastomer film 304; the electrodes 303 are connected to the circuit module 107; the side of the graphene force-sensitive elastomer film 304 in contact with the human body is provided with a force-sensitive contact 305, and the force-sensitive contact The position of 305 corresponds to the position of groove 302 .

The circuit module 107 also includes a signal amplification circuit and a signal conversion circuit.

Six graphene sensors 101 installed on the thumb, middle finger, and wrist of the left and right hands simultaneously collect pulse waves, and calculate pulse conditions, blood pressure, and blood flow velocity equivalents based on the shapes of the pulse waves of the three. The background noise sensor 104 is used as a background noise suppression sensor, which can improve the signal-to-noise ratio of the system.

The above descriptions are only preferred embodiments of the invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention within.

Claims (9)

1. A smart wearable device for graphene multi-point pulse wave blood pressure monitoring, comprising a wearable device body for wearing on human hands, characterized in that: the wearable device body is provided with several graphene graphene for collecting pulse waves A pulse wave sensor and a background noise sensor for collecting background noise; the body of the smart wearable device is also provided with a circuit module connected to the graphene pulse wave sensor and the background noise sensor, and the circuit module includes a processing chip and a power supply for power supply ; The graphene pulse wave sensor is several, respectively arranged on the finger pulp of the left and right hands and the wrist pulse place; the graphene pulse wave sensor at the wrist pulse place and the background noise sensor at the non-pulse place of the wrist are all contact type Graphene sensor; The contact type graphene sensor includes a flexible circuit board, and the flexible circuit board has a groove; It also includes a graphene force-sensitive elastomer film laid on the flexible circuit board, and the graphene force-sensitive The elastomer film covers the groove; the two ends of the graphene force-sensitive elastomer film are provided with electrodes; the electrodes are connected to the circuit module; the side of the graphene force-sensitive elastomer film in contact with the human body is provided with a force-sensitive contact , the position of the force-sensitive contact corresponds to the position of the groove. 2. A graphene multi-point pulse wave blood pressure monitoring intelligent wearable device according to claim 1, characterized in that: there are 6 graphene pulse wave sensors, which are respectively arranged on the pulps of the thumb and middle finger of the left and right hands , Wrist pulse point. 3. A graphene multi-point pulse wave blood pressure monitoring smart wearable device according to claim 1, characterized in that: there are two background noise sensors placed on the non-pulse part of the wrist. 4. A graphene multi-point pulse wave blood pressure monitoring intelligent wearable device according to claim 2, characterized in that: the graphene pulse wave sensors on the thumb and middle finger are all flexible patch graphene sensors. Sensor; the flexible patch-type graphene sensor includes a graphene force-sensitive elastomer film laid on the body of the wearable device, and the two ends of the graphene force-sensitive elastomer film of the flexible patch-type graphene sensor are provided with The electrodes are connected to the circuit module through wires; the wires are arranged in a serpentine shape and fixed on the body of the wearable device with fixed wires; the fixed wires are several groups across the left and right sides of the wires; and the wires can be Shuttle within the fixed line. 5. A graphene multi-point pulse wave blood pressure monitoring intelligent wearable device according to claim 1, characterized in that: said circuit module also includes a wireless transmission module. 6. The smart wearable device for graphene multi-point pulse wave blood pressure monitoring according to claim 1, characterized in that: the circuit module is arranged on the back of the hand. 7. A graphene multi-point pulse wave blood pressure monitoring intelligent wearable device according to claim 1, characterized in that: said circuit module also includes a signal amplification circuit and a signal conversion circuit. 8. The smart wearable device for graphene multi-point pulse wave blood pressure monitoring according to claim 1, characterized in that: the body of the wearable device is provided with a display screen connected to a processing chip. 9. The smart wearable device for graphene multi-point pulse wave blood pressure monitoring according to claim 1, characterized in that: the body of the wearable device is a glove.