A self-powered full-time cycle pulse abnormal signal monitoring wearable device

Abstract

The present invention discloses a self-powered full-time periodic pulse abnormal signal monitoring wearable device, including: a force electric sensor, a thermoelectric sensor, an electrode sheet and a microprocessor; the force electric sensor is attached to the high temperature end of the thermoelectric sensor, and the N-type material end of the thermoelectric sensor and the microprocessor are connected through a first wire; the microprocessor is connected through a communication line; the P-type material end of the thermoelectric sensor is connected to the force electric sensor and the microprocessor through a second wire; the electrode sheet is attached to the low temperature end of the thermoelectric sensor, and the microprocessor is connected through a third wire; the microprocessor is connected to the low temperature end of the thermoelectric sensor through a fourth wire. The design of the monitoring device is simple and compact, and the operation is convenient. It can monitor the human body's pulse beating signal in real time in the full time. By analyzing and processing the pulse beating signal, it can accurately determine whether the pulse beating is abnormal, and issue an early warning prompt to assist the wearer to take corresponding treatment or medical measures in time.

Description

Technical Field

[0001] The present invention relates to the technical field of wearable devices, and more specifically to a self-powered full-time periodic pulse abnormality signal monitoring wearable device. Background Art

[0002] At present, wearable devices have brought convenience to people's lives, so the research and development of wearable devices has received more and more attention. Applying pressure sensors to wearable devices has also become an important research direction. Pressure sensors can sense external pressure and convert pressure signals into electrical signals. They have a wide range of applications in industrial production, life and other fields. However, traditional pressure sensors rely on rigid electronic devices and are difficult to adapt to the deformation of soft interfaces such as human skin, so their application areas are subject to certain restrictions.

[0003] The energy source of traditional pressure sensors mainly relies on batteries or external power supply. However, the hard batteries and complex circuits limit the comfort of wearable devices and also bring the limitation that the battery life is limited and needs to be replaced frequently. Traditional pulse monitoring devices are complex in structure and cumbersome in operation. They cannot be carried around and can usually only monitor in a specific time period, and cannot achieve full-time signal monitoring.

[0004] Therefore, how to design a self-powered full-time periodic pulse abnormal signal monitoring wearable device that can accurately determine whether there is an abnormality in the pulse beat and provide early warning prompts is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] In view of this, the present invention provides a self-powered full-time periodic pulse abnormal signal monitoring wearable device. The monitoring device is simple and compact in design, easy to operate, can be self-powered, and can monitor human pulse beating signals in real time throughout the whole time.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] The present invention provides a self-powered full-time period pulse abnormality signal monitoring wearable device, comprising: a force electric sensor, a thermoelectric sensor, an electrode sheet and a microprocessor;

[0008] The force electric sensor is attached to the high temperature end of the thermoelectric sensor, the N-type material end of the thermoelectric sensor and the microprocessor are connected via a first wire, and the microprocessor is connected via a communication line;

[0009] The P-type material end of the thermoelectric sensor is connected to the mechanoelectric sensor and the microprocessor via a second wire;

[0010] The electrode sheet is attached to the low temperature end of the thermoelectric sensor and connected to the microprocessor via a third wire;

[0011] The microprocessor is connected to the low temperature end of the thermoelectric sensor through a fourth wire.

[0012] Preferably, the force-electric sensor is made of flexible material, and comprises, from top to bottom, a first elastic cloth electrode, an ion layer, a support frame and a second elastic cloth electrode.

[0013] Preferably, the ion layer is elastic fabric modified by hydrogel dipping.

[0014] Preferably, the low-temperature end of the thermoelectric sensor is semicircular.

[0015] Preferably, the N-type material end of the thermoelectric sensor is an N-type carbon nanotube and a flexible composite film of catkins; and the P-type material end of the thermoelectric sensor is a P-type carbon nanotube and a flexible composite film of catkins.

[0016] Preferably, the thermoelectric sensor provides operating voltage for the mechanoelectric sensor and the microprocessor.

[0017] Preferably, the force-electric sensor collects human pulse beating signals and transmits them to the microprocessor;

[0018] The microprocessor analyzes and processes the human pulse beating signal within a preset time period through a sliding window to issue a long-period pulse abnormality warning.

[0019] Preferably, the electrode sheet is attached to the low-temperature end of the thermoelectric sensor to generate contact resistance;

[0020] The microprocessor analyzes and processes the contact resistance to issue an early warning of short-cycle pulse abnormality.

[0021] It can be seen from the above technical solution that compared with the prior art, the technical solution of the present invention has the following advantages:

[0022] Beneficial effects:

[0023] 1. The force and electric sensor is designed with flexible materials, which can better adapt to human skin texture and shape, and improve wearing comfort and reliability.

[0024] 2. The N-type material end and P-type material end of the thermoelectric sensor are made of carbon nanotubes and catkins flexible composite film, which has excellent thermal conductivity and stability and can accurately measure temperature changes.

[0025] 3. The microprocessor analyzes and processes the pulse signal within a preset time period through a sliding window. It can monitor and determine in real time whether the wearer's pulse is abnormal, and issue early warning prompts, thereby improving the real-time and accuracy of monitoring.

[0026] 4. The contact between the electrode and the thermoelectric sensor generates contact resistance. The microprocessor can determine whether there is any abnormality in the pulse beat by analyzing and processing the contact resistance, which can increase the diversity and reliability of data sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of a wearable device for monitoring abnormal pulse signals in a full-time period provided by an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of the structure of a force-electric sensor provided in an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the working process of a wearable device for monitoring abnormal pulse signals in a full-time period provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1 As shown, this embodiment provides a self-powered full-time periodic pulse abnormal signal monitoring wearable device, including: a force electric sensor 1, a pyroelectric sensor 2, an electrode sheet 3 and a microprocessor 7;

[0033] The force electric sensor 1 is attached to the high temperature end 201 of the thermoelectric sensor 2, and the N-type material end of the thermoelectric sensor 2 and the microprocessor 7 are connected through the first wire 4, and the microprocessor 7 is connected through the communication line 6;

[0034] The P-type material end of the thermoelectric sensor 2 is connected to the mechanoelectric sensor 1 and the microprocessor 7 via the second wire 5;

[0035] The electrode sheet 3 is attached to the low temperature end 202 of the thermoelectric sensor 2 and connected to the microprocessor 7 via a third wire 8;

[0036] The microprocessor 7 is connected to the low temperature end 202 of the thermoelectric sensor 2 via the fourth wire 9 .

[0037] The monitoring device is simple and compact in design and easy to operate. It can monitor the human body's pulse signals in real time at all times. By analyzing and processing the pulse signals, it can accurately determine whether there are any abnormalities in the pulse and issue early warning prompts to assist the wearer in taking appropriate treatment or medical measures in a timely manner.

[0038] In this embodiment, the electrode sheet 3 is a tungsten electrode sheet made of tungsten wire or tungsten alloy, which has good mechanical toughness and chemical stability and is suitable for use scenarios with high test accuracy requirements;

[0039] The microprocessor 7 is a microprocessor based on ARM architecture, which has the characteristics of high performance and low power consumption.

[0040] The first wire, the second wire, the third wire and the fourth wire are made of conductive fiber materials to transmit voltage and data signals. Compared with traditional conductive metals, conductive fiber materials are soft, light and transparent, and are more suitable for use in smart wearable devices.

[0041] like Figure 2 As shown, the force-electric sensor is made of flexible material, and includes, from top to bottom: a first elastic cloth electrode 101 , an ion layer 102 , a support frame 103 and a second elastic cloth electrode 104 .

[0042] The ion layer 102 is an elastic cloth modified by hydrogel dipping. The body is an aqueous polyurethane ion gel, including a water-soluble imidazole ionic liquid and a water-soluble elastic polyurethane solution.

[0043] The elastic cloth is a silver nanofiber flexible conductive cloth, which can better adapt to the skin quality and shape of the human body, and improve the comfort and reliability of wearing. Compared with the nanofiber flexible conductive cloth, the silver nanofiber flexible conductive cloth has better conductivity.

[0044] In this embodiment, the low temperature end 202 of the thermoelectric sensor 2 is semicircular. This structure can better improve the contact area change caused by the pulse beating, thereby providing a more sensitive contact resistance change, making it easier for the microprocessor 7 to obtain the contact resistance and process it.

[0045] The N-type material end of the thermoelectric sensor 2 is an N-type carbon nanotube and a willow catkin flexible composite film, and the P-type material end of the thermoelectric sensor 2 is a P-type carbon nanotube and a willow catkin flexible composite film. It has excellent thermal conductivity and stability, and can accurately measure temperature changes.

[0046] The pyroelectric sensor 2 provides working voltage to the force electric sensor 1 and the microprocessor 7 via the first wire 4 and the second wire 5 .

[0047] The high temperature end and low temperature end of the thermoelectric sensor 2 are responsible for receiving and sending thermoelectric signals respectively. The high temperature end is usually exposed to the measurement environment, has a higher thermoelectric coefficient, and can effectively receive the heat source. The low temperature end is usually not directly exposed to the measurement environment, and its main function is to transmit the generated electrical energy to the subsequent measurement equipment or circuit.

[0048] When the human body wears the device, there is a temperature difference ΔT between the human skin surface temperature Ttemperature and the external environment temperature Tenvironment, and a voltage U will be generated on the thermocouple composed of n-type and p-type thermoelectric materials. Usually, the voltage U = αΔT. Among them, α is the Seebeck coefficient of the material, and ΔT is the temperature difference between the two ends of the material.

[0049] like Figure 3 As shown, the force and electricity sensor 1 collects the human pulse beating signal and transmits it to the microprocessor 7 through the communication line 6; the microprocessor 7 analyzes and processes the human pulse beating signal within a preset time period through a sliding window to issue a long-period pulse abnormality warning.

[0050] The specific implementation process of the sliding window pulse signal monitoring algorithm is as follows:

[0051] Ⅰ. Set the initial n=0, the time step t, generally t∈[1,100], and collect the electrical signal at time T(n);

[0052] II. Define n=n+1 and collect the electrical signal at time T(n);

[0053] III. The data at time T(n-1) and T(n) are used to form a monitoring data set;

[0054] IV. Based on the preset pulse beat count, determine whether there is an abnormality in the monitoring data set. If there is no abnormality, return to step II; if there is an abnormality, issue an early warning prompt.

[0055] The electrode sheet 3 is attached to the low-temperature end 202 of the thermoelectric sensor 2 to generate contact resistance; the microprocessor 7 obtains the contact resistance through the third wire and the fourth wire, and performs analysis and processing to issue an abnormal short-cycle pulse warning.

[0056] The initial pressure when worn by the human body is F0. Generally, F0∈[0.5,2]N. Since the low temperature section 202 of the thermoelectric sensor is in contact with the electrode sheet 3, the initial wearing pressure F0 will cause the low temperature section of the thermoelectric sensor to contact with the electrode sheet. The contact area is defined as S 接触 , S 接触 =βF;

[0057] Among them, β∈[0.01,0.025], the initial contact area between the electrode sheet and the motor sheet is defined as S0, and the beating of the human pulse will cause the change of the contact area between the low temperature section 202 of the thermoelectric sensor and the electrode sheet 3. And the higher the pulse beating, the larger the S contact, and the lower the pulse beating, the smaller the S contact.

[0058] Furthermore, the change of S contact will cause the change of contact resistance R contact. S contact and R contact have the following mathematical relationship: R contact = ρL / S contact. Among them, ρ is (resistivity of electrode sheet material + resistivity of thermoelectric sensor low temperature end material) / 2, and L is the length of the electrode sheet.

[0059] The microprocessor 7 determines whether there is any abnormality in the wearer's pulse based on the preset resistance value and the size of the contact resistance. If the contact resistance is greater than 0.5 mΩ, an early warning prompt is issued.

[0060] The wearable device in this embodiment can remind the user by vibration, sound, or a combination of the two; it can also be equipped with an LED light display screen to prompt the user of received information or warning signals through different light colors, flashing frequencies or patterns.

[0061] The monitoring device provided in the technical solution of this embodiment is simple and compact in design and easy to operate. The wearer does not need additional operations and complex equipment connections. It can monitor the human pulse signal in real time and accurately reflect the human pulse condition. By analyzing and processing the pulse signal, it can accurately determine whether the pulse is abnormal, and issue an early warning prompt to help the wearer take appropriate treatment or medical measures in time.

[0062] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0063] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-powered full-time period pulse abnormal signal monitoring wearable device, characterized in that: include: A force-electric sensor (1), a thermoelectric sensor (2), an electrode sheet (3) and a microprocessor (7); The force-electric sensor (1) is fitted with the high-temperature end (201) of the thermoelectric sensor (2), connected to the N-type material end of the thermoelectric sensor (2) and the microprocessor (7) via a first wire (4), and connected to the microprocessor (7) via a communication line (6); the force-electric sensor (1) collects human pulse beating signals and transmits them to the microprocessor (7); the microprocessor (7) analyzes and processes human pulse beating signals within a preset time period through a sliding window, and performs a long-period pulse abnormality warning; The P-type material end of the thermoelectric sensor (2) is connected to the force-electric sensor (1) and the microprocessor (7) via a second wire (5); the thermoelectric sensor (2) provides a working voltage for the force-electric sensor (1) and the microprocessor (7); The electrode sheet (3) is attached to the low-temperature end (202) of the thermoelectric sensor (2) and connected to the microprocessor (7) via a third wire (8); the electrode sheet (3) is attached to the low-temperature end (202) of the thermoelectric sensor (2) to generate contact resistance; the microprocessor (7) analyzes and processes the contact resistance to provide an early warning of short-cycle pulse abnormality; The microprocessor (7) is connected to the low-temperature end (202) of the thermoelectric sensor (2) via a fourth wire (9).

2. A self-powered full-time period pulse abnormal signal monitoring wearable device according to claim 1, characterized in that: The force-electric sensor is made of flexible material and comprises, from top to bottom, a first elastic cloth electrode (101), an ion layer (102), a support frame (103) and a second elastic cloth electrode (104).

3. A self-powered full-time period pulse abnormal signal monitoring wearable device according to claim 2, characterized in that: The ion layer (102) is elastic fabric modified by hydrogel dipping.

4. A self-powered full-time period pulse abnormal signal monitoring wearable device according to claim 1, characterized in that: The low-temperature end (202) of the thermoelectric sensor (2) is semicircular.

5. A self-powered full-time period pulse abnormal signal monitoring wearable device according to claim 1, characterized in that: The N-type material end of the thermoelectric sensor (2) is an N-type carbon nanotube and a willow catkin flexible composite film; the P-type material end of the thermoelectric sensor (2) is a P-type carbon nanotube and a willow catkin flexible composite film.

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