A flexible band-aid heart rate monitor

Abstract

The present invention relates to a flexible band-aid type heart rate meter, comprising a power supply component, a sensor component, a signal processing component, a coating component and a flexible substrate; the sensor component and the signal processing component are electrically connected to the power supply component respectively, and the signal processing component is electrically connected to the sensor component; the power supply component, the sensor component and the signal processing component are all coated in the coating component and attached to the flexible substrate. The flexible band-aid type heart rate meter of the present invention has the advantages of no wristband, adhesive type, good wearing experience, high resolution, high sensitivity and simple preparation.

Description

Technical Field

[0001] The invention relates to the field of wearable devices, and in particular to a flexible band-aid type heart rate meter. Background Art

[0002] With the rapid development of social economy, the pressure caused by life and survival is constantly threatening human health. Excessive pressure and mental tension often cause abnormal heart rate, and long-term abnormal heart rate will eventually lead to various diseases. Therefore, people's focus has shifted from food safety and medical security to real-time monitoring of physical condition. In order to meet this growing technical demand, various domestic and foreign companies and scientific research institutions have developed various wearable devices, especially the research on portable heart rate meters has attracted widespread attention.

[0003] At present, the heart rate meters on the market are mainly based on wristband structures, which are assembled into wearable heart rate meters by matching different types of heart rate sensors. According to the detection principle, the types of heart rate sensors can be divided into photoelectric, piezocalyst and piezoresistive types. Among them, photoelectric is the most widely used because of its non-invasive and non-contact advantages. However, since the tightness of the wristband is difficult to control, it is easy to cause measurement errors of photoelectric heart rate sensors. Too loose will cause the detection signal to be too weak, and too tight will make the wearer uncomfortable. In addition, since the photoelectric heart rate sensor measures the heart rate through light reflection: it is based on the principle that when the heart beats, there will be slight fluctuations in the blood vessels throughout the body of the human body. By emitting a light beam to the subcutaneous blood vessels, the periodic intensity changes of the reflected light are detected in real time, thereby obtaining the pulse signal of the human body. When the sensor is used, it is easy to cause measurement errors due to light interference caused by the environment, the wearer's skin color, sweat and fat thickness, and once the sensor function is abnormal, the heart rate meter needs to be replaced as a whole, which is expensive.

[0004] Therefore, inventing a portable heart rate monitor that can accurately and real-time measure and ensure a good wearing experience is an urgent need for the development of portable medical devices. Summary of the invention

[0005] Based on this, the object of the present invention is to provide a flexible band-aid type heart rate meter, which has the advantages of no wristband, adhesive type, good wearing experience, high resolution, high sensitivity and simple preparation.

[0006] The objective of the present invention is achieved through the following technical scheme: a flexible band-aid type heart rate monitor, comprising a power supply component, a sensor component, a signal processing component, a coating component and a flexible substrate; the sensor component and the signal processing component are electrically connected to the power supply component respectively, and the signal processing component is electrically connected to the sensor component; the power supply component, the sensor component and the signal processing component are all coated in the coating component and attached to the flexible substrate.

[0007] The working principle of the present invention is: when the wearer sticks the flexible band-aid heart rate monitor to the arm or heart, the pulse beat causes the electrical properties of the sensor component to change, and the sensor component transmits the change signal to the signal processing component, which processes the signal and then displays the wearer's heart rate status.

[0008] Compared with the prior art, the present invention adopts a flexible band-aid type package, and the use area is not limited by the body part, and can be used in any part, such as the carotid artery, chest, wrist, internal thigh artery, etc. At the same time, it has excellent concealment and comfort, reduces the overall volume of the heart rate meter, and solves the problem that the traditional wristband type requires a specific tightness to be effectively used. In addition, this packaging mode brings a more comfortable user experience to the wearer while ensuring good heart rate monitoring conditions.

[0009] Furthermore, the sensing component includes a stress sensing module, and the stress sensing module includes an array stress sensor, and the array stress sensor is formed by weaving a plurality of fiber filaments with nanostructured films on the surface, and the fiber filaments are cross-stacked in the horizontal and vertical directions, and the nanostructured films on the surface contact each other at the intersection to form a sensing unit. Preferably, the number of the sensing units is 9 to 2000. Compared with photoelectric sensors, array stress sensors have the advantages of multi-point real-time detection, high sensitivity and high stability.

[0010] Furthermore, the nanostructured film is a one-dimensional nanowire film, a one-dimensional nanorod film, a one-dimensional nanotube film, a two-dimensional nanosheet film, or a three-dimensional network nanostructured film; and the nanostructured film is a composite of one or more of a metal nanostructured film or a semiconductor nanostructured film. The specific structure and material selection range of the nanostructured film is wide and can be determined according to actual needs.

[0011] Furthermore, the fiber filaments are organic polymer fiber filaments, carbon fiber filaments, textile fiber filaments, metal filaments or optical fibers. The fiber filament material can be a conductive material or a fiber material with a conductive layer on the surface. The material selection range is wide, and the diameter can be determined according to actual needs.

[0012] Furthermore, the stress sensing module further comprises a wire and a hub, wherein the hub is connected to the array stress sensor, and the wire is connected to the hub. The hub is used to organize the signal input and output ports of the array stress sensor and access the signal processing component.

[0013] Furthermore, the two ends of the sensor component are connected to the power component and the signal processing component respectively through the flat cables. The sensor component can be installed and removed by plugging and unplugging the flat cables at both ends, avoiding the problem of having to replace the heart rate meter as a whole once the sensor component becomes abnormal, thereby minimizing the subsequent maintenance cost for users.

[0014] Furthermore, the signal processing component includes a single chip microcomputer and a communication module, the communication module is electrically connected to the single chip microcomputer, and the communication module includes a Bluetooth communication submodule and a WiFi communication submodule for transmitting heart rate data.

[0015] Furthermore, the power supply component includes a battery and a USB charging port for powering the sensor component and the signal processing component.

[0016] Furthermore, the signal processing component and the power supply component are provided with an adhesive layer on their surfaces for being adhered to the human body.

[0017] Furthermore, the coating component is silica gel, and the flexible substrate is fiber cloth, PDMS or PUA.

[0018] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the overall structure of the flexible band-aid type heart rate monitor of the embodiment.

[0020] Figure 2 Schematic diagram of the structure of the sensor component of the embodiment.

[0021] Figure 3 FIG. 4 is a schematic structural diagram of a stress sensing module according to an embodiment of the present invention.

[0022] Figure 4 FIG. 4 is a schematic diagram of the array structure of an array stress sensor according to an embodiment.

[0023] Figure 5 Schematic diagram of the structure of the signal processing component of the embodiment.

[0024] Figure 6 Schematic diagram of the structure of the power supply assembly of the embodiment.

[0025] Figure 7 It is a schematic diagram of the application of the flexible band-aid type heart rate monitor in the embodiment in pulse measurement.

[0026] Figure 8 It is a schematic diagram of the application of the flexible band-aid type heart rate monitor in the embodiment in heart rate measurement. DETAILED DESCRIPTION

[0027] Please also see Figure 1-Figure 6The present embodiment provides a flexible band-aid type heart rate meter, comprising a power supply component 3, a sensor component 1, a signal processing component 2, a silicone rubber 5 and a flexible substrate 4; the sensor component 1 and the signal processing component 2 are electrically connected to the power supply component 3 respectively, and the signal processing component 2 is electrically connected to the sensor component 1; the power supply component 3, the sensor component 1 and the signal processing component 2 are all coated in the silicone rubber 5 and attached to the flexible substrate 4.

[0028] Specifically, the two ends of the sensor component 1 are electrically connected to the power supply component 3 and the signal processing component 2 through the flat cable 6. The installation and disassembly of the sensor component can be completed by plugging and unplugging the flat cable at both ends, avoiding the problem of having to replace the heart rate monitor as a whole once an abnormality occurs in the sensor component, thereby minimizing the user's subsequent maintenance costs.

[0029] Specifically, the sensing component 1 includes a stress sensing module 11, which includes an array stress sensor 113, a wire 111 and a hub 112; the hub 112 is connected to the array stress sensor 113, and is electrically connected to the cable 6 through the wire 111, for organizing the signal input and output ports of the array stress sensor 113, and connecting to the signal processing component 2.

[0030] Specifically, the array stress sensor 113 is an array structure formed by weaving a plurality of carbon fiber filaments 1131 grown, coated or plated with nanostructured films on the surface. The carbon fiber filaments 1131 are cross-stacked in the horizontal and vertical directions, and the nanostructured films on their surfaces contact each other at the intersections to form a sensing unit. Preferably, the number of the sensing units is 9 to 2000. When the array is subjected to external force, its electrical properties will change, realizing the process of extracting the heart rate signal and converting it into an electrical signal, thereby providing the wearer with real-time monitoring and recording of the heart rate, and the array stress sensor has the advantages of multi-point real-time detection, high sensitivity and high stability.

[0031] Specifically, the signal processing component 2 includes a single chip microcomputer and a communication module 21, which are electrically connected to the sensor component 1 and the power supply component 3 through the flat cable 6; the communication module 21 has Bluetooth communication and WiFi communication functions, and is connected to other devices to transmit heart rate data.

[0032] Specifically, the power supply component 3 includes a battery 31 and a USB charging port, which are electrically connected to the sensor component 1 and the signal processing component 2 through the flat cable 6, so as to supply power to the sensor component 1 and the signal processing component 2.

[0033] The working principle of this embodiment is as follows: when the wearer sticks the flexible band-aid heart rate monitor to the arm or heart, the pulse beat causes the electrical properties of the array stress sensor to change. The change of the electrical signal is collected by the sensing component, and then the signal is transmitted to the single-chip microcomputer for processing and sent to the wearer's mobile terminal through the communication module. Finally, the wearer is informed of the current heart rate status in the form of a visual chart or voice broadcast, realizing the process of extracting the heart rate signal and converting it into an electrical signal, thereby providing the wearer with real-time monitoring and recording of the heart rate.

[0034] See also Figure 7 , which is a schematic diagram of the application of the flexible band-aid heart rate meter in pulse measurement of this embodiment, wherein the array stress sensor matched with the heart rate meter is a piezoresistive type, and the nanostructure film used in the array stress sensor is a tungsten oxide nanowire film. Specifically, a flexible band-aid heart rate meter is pasted on the pulse of the user's left hand. While ensuring the user's good comfort, the stress change caused by the pulse beats makes the distance between the carbon fiber wires in the array stress sensor smaller, and the number of nanowire contacts increases, resulting in a smaller resistance at both ends of the array stress sensor, and the resistance change is proportional to the intensity of the pulse beat; in addition, the change of the electrical signal is periodic, consistent with the pulse beat frequency; the signal is received by the signal processing component, processed by the single-chip microcomputer, and sent to the user's mobile phone terminal via the communication module, and finally the user learns the current pulse information through the mobile phone software.

[0035] See also Figure 8 , which is a schematic diagram of the application of the flexible band-aid heart rate meter in the present embodiment in the heart rate measurement, wherein the array stress sensor matched with the heart rate meter is of pressure-capacitive type, and the nanostructure film used in the array stress sensor is a tungsten oxide nanowire film. Specifically, the flexible band-aid heart rate meter is pasted on the left chest of the user. While ensuring the good comfort of the user, the stress change caused by the heartbeat makes the distance between the carbon fiber wires in the array stress sensor smaller, and the effective area of ​​the nanowires increases, resulting in the increase of the capacitance at both ends of the array stress sensor, and the capacitance change is proportional to the intensity of the pulse beating; in addition, the change of the electrical signal is periodic, which is consistent with the heart beating frequency; the signal is received by the signal processing component, processed by the single-chip microcomputer, and sent to the user's mobile phone terminal via the communication module, and finally the user learns the current pulse information through the mobile phone software.

[0036] Compared with the prior art, the present invention adopts a flexible bandage-type package, and the use area is not limited by the body part, and can be used in any part, such as the carotid artery, chest, wrist, inner thigh artery, etc. At the same time, it has excellent concealment and comfort, reduces the overall volume of the heart rate meter, and solves the problem that the traditional wristband type requires a specific tightness to be effectively used. And this packaging mode brings a more comfortable user experience to the wearer while ensuring good heart rate monitoring conditions. In addition, the present invention is equipped with an array stress sensor. Compared with the photoelectric stress sensor, the array stress sensor has the advantages of multi-point real-time detection, high sensitivity and high stability, and the sensor is replaceable, which minimizes the user's subsequent maintenance costs. Based on the idea of ​​array packaging, it is expected to be combined with modern Chinese medicine, for simultaneous detection of the three parts of Cun, Guan, and Chi, with the modern Chinese medicine pulse library, the wearer's physical condition can be informed in advance.

[0037] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A flexible band-aid heart rate monitor, characterized in that: It includes a power supply component, a sensor component, a cable, a signal processing component, a coating component and a flexible substrate; the two ends of the sensor component are electrically connected to the signal processing component and the power supply component through the cable, and the signal processing component is electrically connected to the sensor component, and the surfaces of the signal processing component and the power supply component are provided with a sticky layer; the power supply component, the sensor component and the signal processing component are all coated in the coating component and attached to the flexible substrate; the coating component is silica gel, and the flexible substrate is fiber cloth, PDMS or PUA; the sensor component includes a stress sensing module, and the stress sensing module includes an array stress sensor, a hub and a wire, the array stress sensor is connected to the hub, and the The hub is connected to the cable through a wire; the array stress sensor is formed by weaving multiple fiber filaments with nanostructured films on the surface, the nanostructured film is a one-dimensional nanowire film, a one-dimensional nanorod film, a one-dimensional nanotube film, a two-dimensional nanosheet film or a three-dimensional network nanostructured film; and the nanostructured film is a composite of one or more of a metal nanostructured film or a semiconductor nanostructured film; the fiber filaments are organic polymer fiber filaments, metal wires or optical fibers; the fiber filaments are cross-stacked in the horizontal and vertical directions, and the nanostructured films on their surfaces contact each other at the intersection to form a sensing unit, and the number of the sensing units is 9 to 2000.

2. The flexible band-aid type heart rate monitor according to claim 1, characterized in that: The signal processing component includes a single chip microcomputer and a communication module. The communication module is electrically connected to the single chip microcomputer. The communication module includes a Bluetooth communication submodule and a WiFi communication submodule for transmitting heart rate data.

3. The flexible band-aid type heart rate monitor according to claim 1, characterized in that: The power supply component includes a battery and a USB charging port, which are used to supply power to the sensor component and the signal processing component.

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