CN114366120A - Annular strip wireless portable electrocardiogram monitoring system - Google Patents
Annular strip wireless portable electrocardiogram monitoring system Download PDFInfo
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Abstract
The invention relates to an annular strip wireless portable electrocardiogram monitoring system, which comprises: the signal processing device is used for processing the electrocardio analog signals to obtain electrocardio digital signals and transmitting the electrocardio digital signals to the terminal equipment; the signal acquisition device comprises a plurality of coupling circuit electrode patches, and electrocardio analog signals are acquired by attaching the coupling circuit electrode patches to the trunk of a human body and the heart; the signal processing device comprises an annular band-shaped bandage and a signal processing module arranged on the annular band-shaped bandage, wherein a plurality of first connecting pieces are arranged on the annular band-shaped bandage and are correspondingly connected with the coupling circuit electrode patches; the signal processing module is connected with the signal acquisition device through a first connecting piece and a plurality of leads paved in the annular band-shaped bandage. The electrocardio monitoring system of the invention does not limit the movement of human body in the using process, and can be used in summer.
Description
Technical Field
The invention belongs to the technical field of medical monitoring, and particularly relates to an annular strip-shaped wireless portable electrocardiogram monitoring system.
Background
The development of medical technology is greatly driven by the rapid development and innovation of wireless communication and integrated circuits. For example, the use of intelligent electrocardiographic monitoring devices brings great benefits to patients with cardiovascular diseases. Although much work has been done on the development of electrocardiographic monitoring devices, their use in healthcare remains limited due to difficulties in reliability and feasibility.
Currently, common electrocardiographic monitoring devices include medical electrocardiographic monitoring devices, portable electrocardiographic monitors and wearable electrocardiographic monitors. The medical-grade electrocardiogram monitoring equipment has the characteristics of large volume, high price, inconvenience in operation and the like, so that the use population is greatly limited. Although the portable electrocardiogram monitor in the current market has small volume, the portable electrocardiogram monitor still has the defects of inconvenient movement and the like due to more lead wires, and cannot be used when people go out in daily life. Although the wearable ECG monitor solves the problem that the limb movement is limited by the lead wire, the wearable ECG monitor still has the defects of inconvenient wearing, large contact area between the whole equipment and the skin of a human body and great discount of using effect under the hot and stuffy condition in summer.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an annular strip-shaped wireless portable electrocardiogram monitoring system. The technical problem to be solved by the invention is realized by the following technical scheme:
the invention provides an annular strip wireless portable electrocardiogram monitoring system, which comprises: a signal acquisition device and a signal processing device, wherein,
the signal acquisition device is used for acquiring an electrocardio analog signal, and the signal processing device is used for processing the electrocardio analog signal to obtain an electrocardio digital signal and transmitting the electrocardio digital signal to the terminal equipment;
the signal acquisition device comprises a plurality of coupling circuit electrode patches, and the coupling circuit electrode patches are attached to the trunk of a human body and the heart position to acquire the electrocardio analog signals;
the signal processing device comprises an annular band-shaped bandage and a signal processing module arranged on the annular band-shaped bandage, wherein a plurality of first connecting pieces are arranged on the annular band-shaped bandage and are correspondingly connected with the coupling circuit electrode patches;
the signal processing module is connected with the signal acquisition device through the first connecting piece and a plurality of conducting wires laid in the annular band-shaped bandage.
In an embodiment of the present invention, the signal acquisition device includes a right upper limb coupling circuit electrode patch, a left upper limb coupling circuit electrode patch, a right lower limb coupling circuit electrode patch, a left lower limb coupling circuit electrode patch, a first chest coupling circuit electrode patch, a second chest coupling circuit electrode patch, a third chest coupling circuit electrode patch, a fourth chest coupling circuit electrode patch, a fifth chest coupling circuit electrode patch, and a sixth chest coupling circuit electrode patch.
In one embodiment of the present invention, the coupling circuit electrode patch includes a conductive graphene electrode, a filter circuit module, and a second connection member, which are connected in sequence, wherein,
the conductive graphene electrode is used for collecting original electrocardiosignals;
the filter circuit module is used for filtering the original electrocardiosignals to obtain the electrocardio analog signals;
the second connecting piece is correspondingly connected with the first connecting piece arranged on the annular band-shaped binding belt.
In one embodiment of the present invention, the filter circuit module includes a notch filter unit, a low-pass filter unit and a high-pass filter unit connected in sequence; the notch filtering unit, the low-pass filtering unit and the high-pass filtering unit sequentially filter the original electrocardiosignals and filter interference signals to obtain the electrocardio analog signals.
In one embodiment of the present invention, the signal processing module includes a main control unit, an electrocardiographic signal processing unit, a wireless transmission unit, and a power management unit, wherein,
the main control unit is used for controlling the electrocardiosignal processing unit to process the electrocardio analog signal, sending the received electrocardio digital signal to the wireless transmission unit and controlling the wireless transmission unit to carry out data transmission;
the electrocardiosignal processing unit is used for carrying out difference, amplification and digital-to-analog conversion processing on the electrocardio analog signal according to the first control signal sent by the main control unit to obtain the electrocardio digital signal and sending the electrocardio digital signal to the main control unit;
the wireless transmission unit is used for wirelessly transmitting the electrocardio digital signal to the terminal equipment according to a second control signal sent by the main control unit;
the power management unit is used for supplying power to the electrocardiosignal processing unit, the main control unit and the wireless transmission unit.
In one embodiment of the invention, the master control unit is an STM32F103 microcontroller.
In an embodiment of the present invention, the cardiac signal processing unit includes a first ADS1296 chip and a second ADS1296 chip, wherein,
DIN pins of the first ADS1296 chip and the second ADS1296 chip receive the control signal;
the DOUT pins of the first ADS1296 chip and the second ADS1296 chip output the electrocardio digital signals;
the IN1P pin of the first ADS1296 chip is connected with the electrode patch of the right upper limb coupling circuit, the IN1N pin is connected with the electrode patch of the left upper limb coupling circuit, the IN2P pin is connected with the electrode patch of the left lower limb coupling circuit, and the IN2N pin multiplexes signals obtained by the leading wire of the IN1N pin;
the RDLOUT pin of the first ADS1296 chip is connected with the electrode patch of the right lower limb coupling circuit;
pins IN3P, IN4P, IN5P, IN6P, IN7P and IN8P of the second ADS1296 chip are correspondingly connected with the first chest coupling circuit electrode patch, the second chest coupling circuit electrode patch, the third chest coupling circuit electrode patch, the fourth chest coupling circuit electrode patch, the fifth chest coupling circuit electrode patch and the sixth chest coupling circuit electrode patch respectively;
the pins IN3N, IN4N, IN5N, IN6N, IN7N and IN8N of the second ADS1296 chip are all connected with the pins WCT of the first ADS1296 chip.
In one embodiment of the present invention, the wireless transmission unit is a bluetooth module.
Compared with the prior art, the invention has the beneficial effects that:
the annular belt-shaped wireless portable electrocardio monitoring system has small volume, utilizes wireless to transmit data, does not limit the walking of a human body in the use process, has small total contact area with the human body, and is not limited to use under hot conditions in summer.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a block diagram of an annular strip-shaped wireless portable electrocardiograph monitoring system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a coupling circuit electrode patch according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a filter circuit module according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a signal processing apparatus according to an embodiment of the present invention;
fig. 5 is a block diagram of a signal processing module according to an embodiment of the present invention;
fig. 6 is a circuit diagram of a master control unit according to an embodiment of the present invention;
FIG. 7 is a circuit diagram of an ECG signal processing unit according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of the connection between the circuit of the electrical signal processing unit and the corresponding point of the human body according to the embodiment of the present invention;
fig. 9 is a circuit diagram of a wireless transmission unit according to an embodiment of the present invention;
fig. 10 is a circuit diagram of a power management unit according to an embodiment of the present invention.
Fig. 11 is a schematic view of an application scenario of an annular strip-shaped wireless portable electrocardiograph monitoring system according to an embodiment of the present invention;
fig. 12 is a wearing schematic diagram of an annular belt-shaped wireless portable electrocardiogram monitoring system according to an embodiment of the present invention.
Detailed Description
In order to further explain the technical means and effects of the present invention adopted to achieve the predetermined object, a portable electrocardiograph monitoring system with a circular band shape is described in detail below with reference to the accompanying drawings and the detailed description.
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. The technical means and effects of the present invention adopted to achieve the predetermined purpose can be more deeply and specifically understood through the description of the specific embodiments, however, the attached drawings are provided for reference and description only and are not used for limiting the technical scheme of the present invention.
Example one
Referring to fig. 1 in combination, fig. 1 is a block diagram of a structure of an annular belt-shaped wireless portable electrocardiograph monitoring system according to an embodiment of the present invention, and as shown in the figure, the annular belt-shaped wireless portable electrocardiograph monitoring system according to the embodiment includes: the device comprises a signal acquisition device 100 and a signal processing device 200, wherein the signal acquisition device 100 is used for acquiring an electrocardio analog signal, and the signal processing device 200 is used for processing the electrocardio analog signal to obtain an electrocardio digital signal and transmitting the electrocardio digital signal to a terminal device.
In this embodiment, the signal collecting device 100 includes a plurality of coupling circuit electrode patches 101, and the coupling circuit electrode patches 101 are attached to the torso and the heart of the human body to collect the electrocardiographic analog signals.
Further, the signal processing device 200 includes an annular belt-shaped band 201 and a signal processing module 202 disposed on the annular belt-shaped band 201, wherein a plurality of first connectors 203 are disposed on the annular belt-shaped band 201, and the first connectors 203 are correspondingly connected to the coupling circuit electrode patches 101; the signal processing module 202 is connected to the signal acquisition device 100 through a first connector 203 and a plurality of wires laid inside the endless belt.
Specifically, in this embodiment, the signal acquisition device 100 includes 8 coupling circuit electrode patches 101, which are a right upper limb coupling circuit electrode patch RA, a left upper limb coupling circuit electrode patch LA, a right lower limb coupling circuit electrode patch RL, a left lower limb coupling circuit electrode patch LL, a first chest coupling circuit electrode patch V1, a second chest coupling circuit electrode patch V2, a third chest coupling circuit electrode patch V3, a fourth chest coupling circuit electrode patch V4, a fifth chest coupling circuit electrode patch V5, and a sixth chest coupling circuit electrode patch V6.
In the working process of the annular band-shaped wireless portable electrocardio-monitoring system, a right upper limb coupling circuit electrode patch RA, a left upper limb coupling circuit electrode patch LA, a right lower limb coupling circuit electrode patch RL and a left lower limb coupling circuit electrode patch LL are respectively attached to the positions of the upper right side, the upper left side, the lower right side and the lower left side of the trunk of a human body, and a first chest coupling circuit electrode patch V1, a second chest coupling circuit electrode patch V2, a third chest coupling circuit electrode patch V3, a fourth chest coupling circuit electrode patch V4, a fifth chest coupling circuit electrode patch V5 and a sixth chest coupling circuit electrode patch V6 are sequentially attached to the positions of the heart of the human body.
Further, please refer to fig. 2 in combination, fig. 2 is a schematic structural diagram of a coupling circuit electrode patch according to an embodiment of the present invention. As shown in the figure, the coupling circuit electrode patch 101 of the present embodiment includes a conductive graphene electrode 1011, a filter circuit module 1012 and a second connecting member 1013 connected in sequence, in the present embodiment, the conductive graphene electrode 1011, the filter circuit module 1012 and the second connecting member 1013 are all connected by a conducting wire.
Specifically, the conductive graphene electrode 101 is used for collecting original electrocardiosignals; the filter circuit module 1012 is used for filtering the original electrocardiosignals to obtain electrocardio analog signals; the second connecting member 1013 is connected to the first connecting member 203 provided on the endless belt 201 correspondingly.
In this embodiment, the conductive graphene electrode 1011 adopts a flexible electrode graphene material, and attaches the flexible electrode graphene material to a human body to collect original electrocardiosignals, and the flexible electrode graphene material has good biocompatibility, so that the flexible electrode graphene material can achieve no sense of incongruity and wearing sense, is non-toxic and harmless, can not cause damage to the skin even being worn for a long time, and is more suitable for scenes needing long-term monitoring.
Further, the filtering circuit module 1012 includes a notch filtering unit, a low-pass filtering unit and a high-pass filtering unit, which are connected in sequence, wherein the notch filtering unit, the low-pass filtering unit and the high-pass filtering unit sequentially filter the original electrocardiographic signal, and filter the interference signal to obtain the electrocardiographic analog signal.
Optionally, in this embodiment, the notch filter unit is a 50Hz notch filter, the low-pass filter unit is a 100Hz fourth-order butterworth low-pass filter, the high-pass filter unit is a fourth-order 0.05Hz butterworth high-pass filter, a specific circuit structure is shown in fig. 3, fig. 3 is a circuit diagram of a filter circuit module provided in an embodiment of the present invention, and in the design and device selection of the active circuit, an LM6144 amplifier is selected as an operational amplifier device of the design.
Alternatively, the second connector 1013 is a female button and the first connector 203 is a male button.
Further, referring to fig. 5, fig. 5 is a block diagram of a signal processing module according to an embodiment of the present invention, and as shown in the figure, the signal processing module 202 includes a main control unit 2021, an electrocardiograph signal processing unit 2022, a wireless transmission unit 2023, and a power management unit 2024. In this embodiment, the main control unit 2021, the electrocardiographic signal processing unit 2022, the wireless transmission unit 2023, and the power management unit 202 are integrated on a hardware PCB, as shown in fig. 4, fig. 4 is a schematic physical diagram of a signal processing apparatus according to an embodiment of the present invention.
Specifically, the main control unit 2021 is configured to control the electrocardiographic signal processing unit 2022 to process the electrocardiographic analog signal, send the received electrocardiographic digital signal to the wireless transmission unit 2023, and control the wireless transmission unit 2023 to perform data transmission; the electrocardiosignal processing unit 2022 is configured to perform differentiation, amplification, and digital-to-analog conversion on the electrocardio analog signal according to the first control signal sent by the main control unit 2021 to obtain an electrocardio digital signal, and send the electrocardio digital signal to the main control unit 2021; the wireless transmission unit 2023 is configured to wirelessly transmit the electrocardiographic digital signal to the terminal device according to the second control signal sent by the main control unit 2021; the power management unit 2024 is used for supplying power to the electrocardiosignal processing unit 2021, the main control unit 2022 and the wireless transmission unit 2023.
In this embodiment, the main control unit 2021 is an STM32F103 microcontroller, the electrocardiographic signal processing unit 2022 includes two ADS1296 chips, and the wireless transmission unit 2023 is a bluetooth module, which is a bluetooth HC-05.
Referring to fig. 6, fig. 6 is a circuit diagram of a main control unit according to an embodiment of the present invention, in this embodiment, an STM32F103 microcontroller based on a 32-bit Cortex-M3 central processing unit is selected as the main control unit 2021, and specifically, an ADS1296 chip of the electrocardiographic signal processing unit 2022 uses an spi (serial Peripheral interface) serial Peripheral interface bus for data communication. SPI works in a master-slave fashion, which typically has one master and one or more slaves, requiring at least 4 wires: data Input (SDI), data output (SDO), bus clock (SCLK), Chip Select (CS). In this embodiment, the two ADS1296 chips communicate with each other in the slave identity, and the MCU (micro controller) performs chip control command input, register data configuration write-in, and data read-out after the acquisition on the ADS1296 chips in the master identity.
Specifically, in the embodiment, a time-division multiplexing mode is used, and the two ADS1296 chips are respectively controlled by a chip selection signal line 18 pin CS1 and a chip selection signal line 19 pin CS2 of the STM32F103 microcontroller. The 14 th pin READY signal line may send a falling edge signal after the ADS1296 chip completes data conversion, to prompt the MCU to read the converted data into the corresponding memory by controlling the corresponding CS signal and enabling SPI transmission. The RESET signal line on pin 7 of the STM32F103 microcontroller is used to RESET the ADDS1296 chip during initialization, or by controlling the signal line to disable the data acquisition function and place the ADDS129 chip in standby mode during device operation.
Further, the STM32F103 microcontroller inputs and outputs information with the Bluetooth module through RX and TX pins, an EN signal line of the Bluetooth HC-05 is a control enable bit of the Bluetooth module, and an AT signal line identifies whether to enter an AT mode.
Furthermore, the ports corresponding to the SWDIO, BOOT0 and SWCLK signal lines of the STM32F103 microcontroller are the program programming ports of the present design.
Referring to fig. 7 and 8 in combination, fig. 7 is a circuit diagram of an electrocardiograph signal processing unit according to an embodiment of the present invention, and fig. 8 is a schematic diagram of a connection between a circuit of the electrocardiograph signal processing unit according to the embodiment of the present invention and a corresponding point of a human body. As shown in the figure, in the present embodiment, the cardiac signal processing unit includes a first ADS1296 chip U1 and a second ADS1296 chip U2. The DIN pins of the first ADS1296 chip U1 and the second ADS1296 chip U2 receive control signals; the DOUT pins of the first ADS1296 chip U1 and the second ADS1296 chip U2 output ECG digital signals.
It should be noted that the START1 and START2 signals are used to control the START and stop of sampling of the first ADS1296 chip U1 and the second ADS1296 chip U2, respectively, and in this embodiment, the signals can be used to synchronize the sampling time of the two chips, so as to ensure that the data of each channel are collected at the same time. CS1 and CS2 are used as chip select signal lines of the first ADS1296 chip U1 and the second ADS1296 chip U2, respectively, and when the STM32F103 microcontroller selects which chip select CS, the chip outputs data to the STM32F103 microcontroller through pin DOUT. The CS1 signal line of the first ADS1296 chip U1 is connected to pin 18 of the STM32F103 microcontroller, and the CS2 signal line of the second ADS1296 chip U2 is connected to pin 19 of the STM32F103 microcontroller. The signal output DOUT pins of the first ADS1296 chip U1 and the second ADS1296 chip U2 are simultaneously connected with the No. 16 pin of the STM32F103 microcontroller. SCLK is a clock pin, which is used to provide a system clock for ADS1296 chip work, and SCLK pins of the first ADS1296 chip U1 and the second ADS1296 chip U2 are connected to No. 15 pin of STM32F103 microcontroller at the same time. DIN is a signal input line pin, the STM32F103 microcontroller transmits relevant operation instructions (namely a first control signal) to the first ADS1296 chip U1 and the second ADS1296 chip U2 through the signal input line pin, and DIN pins of the first ADS1296 chip U1 and the second ADS1296 chip U2 are simultaneously connected with a No. 17 pin of the STM32F103 microcontroller.
Furthermore, an IN1P pin of the first ADS1296 chip U1 is connected with a right upper limb coupling circuit electrode patch RA, an IN1N pin is connected with a left upper limb coupling circuit electrode patch LA, an IN2P pin is connected with a left lower limb coupling circuit electrode patch LL, and an IN2N pin multiplexes a signal obtained by an IN1N pin lead wire; the RDLOUT pin of the first ADS1296 chip U1 is connected with the right lower limb coupling circuit electrode patch RL, and the RDLOUT pin is used for outputting a right leg driving signal generated in a right leg driving circuit generation channel to the right leg of a human body so as to suppress common mode interference and improve the accuracy of electrocardiosignals.
Further, IN3P, IN4P, IN5P, IN6P, IN7P and IN8P pins of the second ADS1296 chip U2 are respectively connected to the first chest coupling circuit electrode patch V1, the second chest coupling circuit electrode patch V2, the third chest coupling circuit electrode patch V3, the fourth chest coupling circuit electrode patch V4, the fifth chest coupling circuit electrode patch V5 and the sixth chest coupling circuit electrode patch V6.
IN this embodiment, the IN3N, IN4N, IN5N, IN6N, IN7N and IN8N pins of the second ADS1296 chip U2 are all connected to the WCT pin of the first ADS1296 chip U1, and the first ADS1296 chip U1 outputs a WCT signal at the WCT pin, and the WCT signal is used as the reference voltage of the chest lead.
As shown in fig. 8, the signal processing procedure of the electrocardiographic signal processing unit of the present embodiment is briefly described as follows:
the electrocardiosignals of the human body are obtained by collecting two limb signals through two electrode plates and then carrying out differential subtraction, in the embodiment, the first ADS1296 chip U1 uses two channels, the second ADS1296 chip U2 uses six channels, and each channel is provided with two signal lines INxP and INxN. In the ADS1296, two signal lines of each channel respectively collect two paths of electric signals, the electric signals are filtered through EMI electromagnetic interference, then enter the PGA for differential amplification, and finally are sent into the ADC for digital-to-analog conversion to obtain an electrocardio digital signal, and the CONTROL is used for controlling the obtained electrocardio digital signal to be sent to the STM32F103 microcontroller. The MUX channel is a multiplexing channel, in which the collected electrocardiographic signals of any limb can be multiplexed, in this embodiment, signals of the right upper limb, the left upper limb, and the left lower limb are multiplexed, and the wilson central reference voltage is obtained through the WCTChl channel. RLDChl generates a channel for the right leg driver circuit in which a right leg driver signal can be generated and output via the pin.
Further, the first ADS1296 chip U1 additionally outputs two signals, which are the WCT signal generated in the WCT channel and the right leg driving signal generated in the RLD channel. The WCT signal provides a reference voltage for the second ADS1296 chip U2 when collecting chest leads, and the right leg driving signal is output to the right leg of the human body through the RLDOUT pin of the first ADS1296 chip U1, so as to suppress common mode interference and improve the accuracy of electrocardiosignals.
Therefore, in this embodiment, two channels of the first ADS1296 chip U1 can respectively obtain one cardiac lead. The second ADS1296 chip U2 uses the multiplexed WCT signal output by the first ADS1296 chip U1 as a reference voltage to perform differential subtraction with the electrocardiosignals acquired by IN3P, IN4P, IN5P, IN6P, IN7P and IN8P to obtain corresponding six-channel electrocardiolead signals.
Referring to fig. 9, fig. 9 is a circuit diagram of a wireless transmission unit according to an embodiment of the present invention, and as shown in the drawing, in this embodiment, the bluetooth HC-05 wirelessly transmits data sent by the main control unit 2021 to a terminal device, where the terminal device may be a PC terminal or a smart phone terminal.
Specifically, the pin TXD No. 1 and the pin RXD No. 2 of the bluetooth HC-05 are respectively connected with the pin HC05_ TX No. 12 and the pin HC05_ RX No. 13 of the STM32F103 microcontroller, and real-time communication between the two is realized through the pins. The VCC pin of the Bluetooth HC-05 is connected with a 3.3V power supply, and the GND pin is grounded. The DS2 pin is a special connection signal lamp, when the DS2 lamp flashes every 500mS, it indicates that the Bluetooth setting is successful.
Referring to fig. 10, fig. 10 is a circuit diagram of a power management unit according to an embodiment of the present invention, wherein a CHRG pin and a STDBY pin in the circuit respectively represent a charging status indication output terminal and a charging completion indication output terminal. The charging time pin CHRG outputs a low level indicating that charging is in progress. TP4057 precharges the battery with a small current if the battery voltage is below 2.9V. When the battery voltage exceeds 2.9V, the battery is charged in a constant current mode, with the charging current being determined by the resistance R38 between the PROG pin and GND. When the battery voltage approaches 4.2V, the charging current gradually decreases, and TP4057 enters the constant voltage charging mode. When the charging current is reduced to a charging end threshold value, the charging period is ended, the CHRG pin outputs a high resistance state, and the STDBY pin outputs a low potential.
Please refer to fig. 11 and 12 in combination, fig. 11 is a schematic view of an application scenario of an annular belt-shaped wireless portable electrocardiograph monitoring system according to an embodiment of the present invention; fig. 12 is a wearing schematic diagram of an annular belt-shaped wireless portable electrocardiogram monitoring system according to an embodiment of the present invention. As shown in the figure, the user attaches the coupling circuit electrode patch 101 to a point to be measured of a human body, connects the coupling circuit electrode patch 101 with the annular band-shaped bandage 201 through the button male and female buttons, collects and processes electrocardiosignals, wirelessly transmits the obtained electrocardio digital signals to the terminal equipment, and displays electrocardio waveforms so as to evaluate the health state of the user.
In the embodiment, the annular belt-shaped wireless portable electrocardio-monitoring system is small in size, the overall contact area of the annular belt-shaped wireless portable electrocardio-monitoring system and a human body is only the sum of the area of the patches of the points to be measured, the overall contact area of the annular belt-shaped wireless portable electrocardio-monitoring system and the human body is small, the annular belt-shaped wireless portable electrocardio-monitoring system is not limited to be used under hot conditions in summer, and the human body is not limited to move in the use process by utilizing wireless data transmission.
It should be noted that, in the using process of the annular strip wireless portable electrocardiogram monitoring system, a user can adjust the number of electrocardiogram leads according to the actual needs of the user.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or device comprising the element. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The directional or positional relationships indicated by "upper", "lower", "left", "right", etc., are based on the directional or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (8)
1. The utility model provides a wireless portable electrocardio monitoring system of annular banded, its characterized in that includes: a signal acquisition device and a signal processing device, wherein,
the signal acquisition device is used for acquiring an electrocardio analog signal, and the signal processing device is used for processing the electrocardio analog signal to obtain an electrocardio digital signal and transmitting the electrocardio digital signal to the terminal equipment;
the signal acquisition device comprises a plurality of coupling circuit electrode patches, and the coupling circuit electrode patches are attached to the trunk of a human body and the heart position to acquire the electrocardio analog signals;
the signal processing device comprises an annular band-shaped bandage and a signal processing module arranged on the annular band-shaped bandage, wherein a plurality of first connecting pieces are arranged on the annular band-shaped bandage and are correspondingly connected with the coupling circuit electrode patches;
the signal processing module is connected with the signal acquisition device through the first connecting piece and a plurality of conducting wires laid in the annular band-shaped bandage.
2. The annular belt-shaped wireless portable electrocardiogram monitoring system according to claim 1, wherein the signal acquisition device comprises a right upper limb coupling circuit electrode patch, a left upper limb coupling circuit electrode patch, a right lower limb coupling circuit electrode patch, a left lower limb coupling circuit electrode patch, a first chest coupling circuit electrode patch, a second chest coupling circuit electrode patch, a third chest coupling circuit electrode patch, a fourth chest coupling circuit electrode patch, a fifth chest coupling circuit electrode patch and a sixth chest coupling circuit electrode patch.
3. The annular belt-shaped wireless portable electrocardiogram monitoring system according to claim 1, wherein said coupling circuit electrode patch comprises a conductive graphene electrode, a filter circuit module and a second connecting member connected in sequence, wherein,
the conductive graphene electrode is used for collecting original electrocardiosignals;
the filter circuit module is used for filtering the original electrocardiosignals to obtain the electrocardio analog signals;
the second connecting piece is correspondingly connected with the first connecting piece arranged on the annular band-shaped binding belt.
4. The annular belt-shaped wireless portable electrocardiogram monitoring system according to claim 3, wherein said filter circuit module comprises a notch filter unit, a low-pass filter unit and a high-pass filter unit which are connected in sequence; the notch filtering unit, the low-pass filtering unit and the high-pass filtering unit sequentially filter the original electrocardiosignals and filter interference signals to obtain the electrocardio analog signals.
5. The annular belt-shaped wireless portable electrocardio-monitoring system according to claim 2, wherein the signal processing module comprises a main control unit, an electrocardio-signal processing unit, a wireless transmission unit and a power management unit, wherein,
the main control unit is used for controlling the electrocardiosignal processing unit to process the electrocardio analog signal, sending the received electrocardio digital signal to the wireless transmission unit and controlling the wireless transmission unit to carry out data transmission;
the electrocardiosignal processing unit is used for carrying out difference, amplification and digital-to-analog conversion processing on the electrocardio analog signal according to the first control signal sent by the main control unit to obtain the electrocardio digital signal and sending the electrocardio digital signal to the main control unit;
the wireless transmission unit is used for wirelessly transmitting the electrocardio digital signal to the terminal equipment according to a second control signal sent by the main control unit;
the power management unit is used for supplying power to the electrocardiosignal processing unit, the main control unit and the wireless transmission unit.
6. An annular belt-shaped wireless portable electrocardio-monitoring system according to claim 5, wherein the main control unit is an STM32F103 microcontroller.
7. The annular strip wireless portable electrocardiogram monitoring system of claim 5, wherein said electrocardiogram signal processing unit comprises a first ADS1296 chip and a second ADS1296 chip, wherein,
DIN pins of the first ADS1296 chip and the second ADS1296 chip receive the control signal;
the DOUT pins of the first ADS1296 chip and the second ADS1296 chip output the electrocardio digital signals;
the IN1P pin of the first ADS1296 chip is connected with the electrode patch of the right upper limb coupling circuit, the IN1N pin is connected with the electrode patch of the left upper limb coupling circuit, the IN2P pin is connected with the electrode patch of the left lower limb coupling circuit, and the IN2N pin multiplexes signals obtained by the leading wire of the IN1N pin;
the RDLOUT pin of the first ADS1296 chip is connected with the electrode patch of the right lower limb coupling circuit;
pins IN3P, IN4P, IN5P, IN6P, IN7P and IN8P of the second ADS1296 chip are correspondingly connected with the first chest coupling circuit electrode patch, the second chest coupling circuit electrode patch, the third chest coupling circuit electrode patch, the fourth chest coupling circuit electrode patch, the fifth chest coupling circuit electrode patch and the sixth chest coupling circuit electrode patch respectively;
the pins IN3N, IN4N, IN5N, IN6N, IN7N and IN8N of the second ADS1296 chip are all connected with the pins WCT of the first ADS1296 chip.
8. The annular belt-shaped wireless portable electrocardiogram monitoring system according to claim 5, wherein said wireless transmission unit is a Bluetooth module.
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