TW201717846A - Patch including an external floating high-pass filter and an electrocardiograph (ECG) patch including the same - Google Patents

Abstract

An electrocardiograph (ECG) patch including: a first electrode; a second electrode; a high pass filter configured to receive a bias voltage and provide the bias voltage to the first electrode and the second electrode; and a signal processing unit configured to generate the bias voltage and provide the bias voltage to the high pass filter.

Description

A patch containing an external floating high-pass filter and an electrocardiogram patch containing the same

An illustrative embodiment of the inventive concept pertains to an electrocardiograph (ECG) patch and, more particularly, to an ECG patch comprising two electrodes and a floating high pass filter.

ECG monitoring is the process of recording the electrical activity of the heart over a period of time using electrodes placed on the person's body. These electrodes detect small electrical changes on the human skin resulting from depolarization during each heartbeat of the heart. ECG patches placed close to the heart allow easy access to ECG signals. In general, an ECG patch includes an ECG electrode for detecting an ECG signal, and a bias electrode for supplying a bias voltage to a human body. The bias electrode is typically attached to the body of the person along with the ECG electrode.

In accordance with an exemplary embodiment of the inventive concept, an electrocardiogram (ECG) patch is provided, comprising: a first electrode; a second electrode; a high pass filter configured to receive a bias voltage and to bias the a voltage is provided to the first electrode and the second electrode; and a signal processing unit configured to generate the bias voltage and provide the bias voltage to the high pass filter.

According to an exemplary embodiment of the inventive concept, an electrocardiogram (ECG) patch is provided, including: a first patch including a first electrode, a high pass filter, and an ECG signal processing unit; and a second patch including a second electrode and a battery; and a cable including a first wire for supplying a bias voltage from the first patch to the second electrode for providing an operating voltage to the second patch a second wire, and a third wire for providing a ground voltage to the second patch.

According to an exemplary embodiment of the inventive concept, a data processing system is provided, comprising: an ECG patch including a first electrode, a second electrode, configured to generate a to-be-provided to the first electrode, and a high pass filter of a bias voltage of the second electrode, and a wireless transceiver; and a mobile communication device configured to communicate with the ECG patch.

According to an exemplary embodiment of the inventive concept, a data processing system is provided, comprising: an ECG patch including a first electrode, a second electrode, configured to generate a to-be-provided to the first electrode, and a high pass filter of a bias voltage of the second electrode, and a wireless transceiver; a health care server configured to receive ECG medical data of an individual wearing the ECG patch; and a mobile computing device configured Receiving the ECG medical data of the individual from the health care server.

According to an exemplary embodiment of the inventive concept, an ECG patch includes: a first electrode configured to detect a first ECG signal; a second electrode configured to detect a second ECG signal; Qualcomm a filter configured to perform high pass filtering on the first ECG signal to generate a first high pass filtered signal, and high pass filtering on the second ECG signal to generate a second high pass filtered signal; and signal processing a unit configured to generate an ECG output signal based on a difference between the first ECG signal and the second ECG signal, wherein the high pass filter is further configured to generate a first bias based on a drive voltage Pressing a voltage and supplying the first bias voltage to the first electrode, and generating a second bias voltage based on the driving voltage and providing the second bias voltage to the second electrode.

According to an exemplary embodiment of the inventive concept, an ECG patch includes: a first patch including a first electrode and an ECG sensor; a second patch including a second electrode; and a cable connected Between the first patch and the second patch, wherein the ECG sensor is configured to receive a first high pass filtered signal and a second high pass filtered signal, and to amplify the first pass a voltage difference between the high pass filtered signal and the second high pass filtered signal to produce an output voltage, wherein the first patch includes a high pass filter configured to generate a first using a driving voltage And a bias voltage and a second bias voltage, and providing the first bias voltage to the first electrode and the second bias voltage to the second electrode.

According to an exemplary embodiment of the inventive concept, an ECG patch is provided, including: a first electrode; a second electrode; a wire; and a high pass filter configured to generate a first bias voltage and a second bias Pressing a voltage, applying the first bias voltage to the first electrode via a transmission line, and applying the second bias voltage to the second electrode via the wire.

In accordance with an illustrative embodiment of the inventive concept, an ECG patch is provided that includes a first electrode configured to detect a first ECG signal from a human heart, and a second electrode configured to Detecting a second ECG signal from the heart of the person; a high pass filter configured to perform high pass filtering on the first ECG signal to generate a first high pass filtered signal, and to the second The ECG signal performs high pass filtering to generate a second high pass filtered signal; and an ECG processing unit includes: an ECG sensor configured to sense the first high pass filtered signal and the second high pass filtered The difference between the signals and produces an ECG output signal corresponding to the sensed result, and a bias voltage generation circuit configured to provide a bias voltage to the high pass filter.

1 is a perspective view of a wearable electrocardiogram (ECG) patch 100 including two ECG electrodes and a floating high pass filter, in accordance with an exemplary embodiment of the inventive concept. 2 is a perspective view showing a state in which the wearable ECG patch 100 illustrated in FIG. 1 is placed around a human heart, in accordance with an exemplary embodiment of the inventive concept.

Referring to FIG. 1 , the wearable ECG patch 100 can include a first patch 110 , a second patch 150 , and a cable 170 . The wearable ECG patch 100 can be referred to as an ECG patch or an ECG sensor patch.

The ECG electrodes 112 and 152 are placed on the patches 110 and 150, respectively. The wearable ECG patch 100 does not require the implementation of a special ECG electrode for body biasing in either of the patches 110 and 150. Therefore, the wearable ECG patch 100 includes only two ECG electrodes 112 and 152. The ECG electrodes 112 and 152 are ECG electrodes or ECG signal electrodes that are placed on the body (and more specifically, placed around the heart of the individual 300).

In FIG. 2, reference numeral 111 indicates an adhesive layer for fixing or attaching the first ECG electrode 112 of the first patch 110 to the surface of the chest around the human heart, and reference numeral 151 indicates that the second patch is to be used. The second ECG electrode 152 of 150 is fixed or attached to the adhesive layer of the surface of the chest around the human heart. Each of the adhesive layers 111 and 151 may include a conductive gel, but is not limited thereto. Further, reference numerals 111 and 151 may respectively indicate the disposable ECG electrodes electrically connected to the ECG electrodes 112 and 152.

FIG. 3 is a detailed block diagram of the wearable ECG patch 100 illustrated in FIG. 1 in accordance with an illustrative embodiment of the inventive concept. Referring to FIG. 3, V _ECG indicates the voltage of the ECG signal generated by the heartbeat of the person 300; Z _elec in the electrode interface model IFM indicates the contact impedance between each modeled ECG electrode 112 or 152 and the person 300; V _hc indicates the voltage difference For example, a direct current (DC) component between the ECG electrodes 112 and 152; and ΔZ indicates the difference between the impedance of the first patch 110 and the contact impedance of the second patch 150. ΔZ is one of the factors that increase the motion noise. The motion noise may be the difference between the motion of the person 300 or the physical difference between the ECG electrodes 112 and 152 (e.g., the thickness of the adhesive layer 111 and the thickness of the adhesive layer 151 present between the respective ECG electrodes 112 and 152 and the body of the person 300). ) increase. The contact impedance Z _elec can be determined by a resistor (for example, 51 kΩ) and a capacitor (for example, 47 nF), and the voltage difference V _hc can be ±300 mV, but these values of 51 kΩ, 47 nF, and ±300 mV are merely examples.

50/60 Hz indicates the power supply noise generated from the noise source (NS), and I _C indicates the noise current generated from the NS. For example, when a person 300 having a wearable ECG patch 100 placed around the body on the body approaches NS (eg, a fluorescent lamp or measuring device that operates at a frequency of 50 Hz or 60 Hz), Power supply noise 50/60 Hz and noise current I _C can affect the body of the person 300. F _C indicates the capacitance between ground ground (GND) and the body of person 300; VSS _PCB indicates the ground of ECG signal processing unit 120 (or ground of printed circuit board (PCB)); and CC indicates ground ground GND and PCB Ground the capacitance between the VSS _PCBs .

Referring to FIGS. 1 through 3, the first patch 110 includes a first ECG electrode 112, an ECG signal processing unit 120, a high pass filter 130, and transmission lines 122-1, 122-2, and L1.

The first ECG electrode 112 can detect a first ECG signal from the heart of the person 300. High pass filter 130 may perform high pass filtering on the first ECG signal to generate a first high pass filtered ECG signal ECG_P.

The ECG signal processing unit 120 may include a plurality of pads 121-1, 121-2, 121-3, 121-4, and 121-5, an ECG sensor 123, a voltage regulator 125, a voltage divider 127, and a driver 129. The ECG signal processing unit 120, which can process the biosignals ECG_P and ECG_N, can be an ECG wafer or a bioprocessor.

The ECG sensor 123 may sense a difference between the first high-pass filtered ECG signal ECG_P input via the first pad 121-1 and the second high-pass filtered ECG signal ECG_N input via the second pad 121-2, And an ECG output signal corresponding to the sensing result can be generated and processed.

The voltage regulator 125 may receive the operating voltage VDD, the adjustable operating voltage VDD, and may generate an operating voltage of the ECG sensor 123 included in the ECG signal processing unit 120 via the third pad 121-3. The operating voltage VDD is generated by the battery 154 embedded in the second patch 150 and can be supplied to the voltage regulator 125 via the second wire W2 and the third pad 121-3.

The voltage divider 127 can divide the voltage (e.g., VDD) that has been regulated by the voltage regulator 125 to generate a driving voltage. The driving voltage can be VDD/2, but is not limited thereto. The driver 129 can drive the driving voltage VDD/2 to the high pass filter 130 via the fifth pad 121-5. The driver 129 may have a gain of 1 and may be implemented as a current driver, but the inventive concept is not limited to this example.

The high pass filter 130 may generate the first bias voltage and the second bias voltage using the driving voltage VDD/2, and may apply the first bias voltage to the body of the person 300 via the third transmission line L1 and the first ECG electrode 112, And a second bias voltage may be applied to the body of the person 300 via the first wire W1 and the second ECG electrode 152. The level of the first bias voltage may be the same as the level of the second bias voltage, but the inventive concept is not limited to this example. The levels of the first and second bias voltages may be determined by a drive voltage (eg, VDD/2) output from the driver 129 when the ECG electrodes 112 and 152 are attached to the body of the person 300.

Therefore, the first ECG electrode 112 can apply a first bias voltage to the body of the person 300 and detect the first ECG signal at a certain time, and the second ECG electrode 152 can apply the second bias voltage to the person at a certain time. 300 body and detect the second ECG signal. The times may be the same, substantially simultaneously or different from each other.

Since the driving voltage VDD/2 is applied to the high pass filter 130, the high pass filter 130 can be implemented as a floating high pass filter. The high pass filter 130 can include a plurality of capacitors 132 and 135, and a plurality of resistors 131, 133, 134, and 136. Although the high pass filter 130 is placed outside of the ECG signal processing unit 120 in the embodiment illustrated in FIG. 3, the high pass filter 130 may be integrated into the ECG signal processing unit 120 or placed within the ECG signal processing unit 120.

The first capacitor 132 is connected between the third transmission line L1 and the first transmission line 122-1. The second capacitor 135 is connected between the first electric wire W1 and the second transmission line 122-2. The first transmission line 122-1 is connected to the first pad 121-1. The second transmission line 122-2 is connected to the second pad 121-2.

The first resistor 131 is connected between the third transmission line L1 and the node ND connected to the fifth pad 121-5. The second resistor 133 is connected between the first transmission line 122-1 and the node ND. The third resistor 134 is connected between the node ND and the second transmission line 122-2. The fourth resistor 136 is connected between the node ND and the first electric wire W1.

Capacitors 132 and 135 can have the same capacitance C, and resistors 131, 133, 134, and 136 can have the same resistance value R. However, resistors 131 and 136 may have a resistance value R1 and resistors 133 and 134 may have a resistance value R2. In this case, the resistance value R1 may be different from the resistance value R2. Each of the resistors 131, 133, 134, and 136 can be a passive or active resistive element. Each of the capacitors 132 and 135 can be a switched capacitor.

The common mode DC gain G _{CM, DC of the} high pass filter 130 can be one. For example, when R = R1 = R2, the cutoff frequency f _{HPf, -3dB} of the high pass filter 130 is 1/2π RC, and the differential input impedance Z _{in, Diff is} close to R.

When the ECG electrodes 112 and 152 are attached to the body of the person 300 around the heart, and the driving voltage VDD/2 is applied to the high pass filter 130, the voltage of the first transmission line 122-1 is VDD/2 + G1·V _ECG /2 + V _Hc /2, and the voltage of the second transmission line 122-2 is VDD/2 − G1·V _ECG /2 + V _hc /2, where G1 can indicate the gain determined by the frequency of the capacitor C, the resistance value R2 and the voltage V _ECG . Although the formula illustrated in Figure 3 does not include G1, in practice these formulas may include G1.

Thus, the differential DC input (eg, V _hc ) is attenuated by the high pass filter 130 and the attenuated differential DC input can be cancelled from the ECG sensor 123. The body of the person 300 is biased by two resistors 131 and 136 and two ECG electrodes 112 and 152. In other words, the ECG patch 100 does not include a separate bias electrode for exclusively supplying a bias voltage.

The ground of the battery 154 and the PCB ground VSS _PCB may be connected to each other via the third wire W3 and the fourth pad 121-4.

The second patch 150 can include a second electrode 152 and a battery 154. The second ECG signal detected by the second electrode 152 is transmitted to the high pass filter 130 via the first wire W1. The high pass filter 130 performs high pass filtering on the second ECG signal to output a second high pass filtered ECG signal ECG_N. The second high pass filtered ECG signal ECG_N may be transmitted to the ECG sensor 123 via the second transmission line 122-2 and the second pad 121-2.

The cable 170 may include a first wire W1 for transmitting a second ECG signal detected by the second ECG electrode 152 disposed in the second patch 150 to the first patch 110 for operating the voltage VDD The second wire W2 transmitted to the first patch 110 and the third wire W3 for transmitting the ground voltage to the first patch 110. Cable 170 can be a shielded cable.

4 is a schematic diagram of a layout of a floating high pass filter 130 and an ECG transmission line included in the first patch 110 of the wearable ECG patch 100 illustrated in FIG. 1 according to an exemplary embodiment of the inventive concept. Referring to FIG. 4, when the ECG patch 100 is implemented in a PCB including a plurality of layers LAYER1 to LAYER6, the ECG signal processing unit 120 may be placed at the first layer LAYER1, and the high-pass filter 130 may be placed on the sixth layer. LAYER6, but the inventive concept is not limited to the current embodiment.

A first electrostatic discharge (ESD) protection circuit 140 can be placed between the electrodes 112 and 152 and the high pass filter 130. The high pass filter 130 can be placed as close as possible to the ECG sensor 123. A transmission line for supplying the ground voltage VSS can be placed at the fifth floor LAYER5. The ESD protection circuits 140 and 142, the first transmission line 122-1 for transmitting the first high-pass filtered ECG signal ECG_P, and the second transmission line 122-2 for transmitting the second high-pass filtered ECG signal ECG_N may be placed on the Six layers of LAYER6, but the inventive concept is not limited to the current embodiment.

FIG. 5 is a schematic diagram of a layout of a PCB included in a first patch 110 of the wearable ECG patch 100 illustrated in FIG. 1 in accordance with an exemplary embodiment of the inventive concept. Referring to FIG. 5, a transmission line for transmitting the first high-pass filtered ECG signal ECG_P and a high-pass filter 130 are placed at the sixth layer LAYER6, and a transmission line 210 placed at the fifth layer LAYER5 to transmit a ground voltage may have a shielding line for shielding a structure for transmitting a transmission line of the first high-pass filtered ECG signal ECG_P to prevent the digit line 230 placed at the fourth layer LAYER4 and the transmission line placed at the sixth layer LAYER6 to transmit the first high-pass filtered ECG signal ECG_P The coupling noise between. In addition, the shield structure 220 or the shield layer 220 may be placed between the digit line 230 and the high pass filter 130 to prevent coupling noise between the digit line 230 and the high pass filter 130.

FIG. 6 is a detailed block diagram of the wearable ECG patch illustrated in FIG. 1 in accordance with an exemplary embodiment of the inventive concept. Referring to FIG. 1, FIG. 2, FIG. 3 and FIG. 6, the ECG processing unit 120-1 may include an ECG sensor 123, an analog-to-digital converter (ADC) 410, and a central processing unit (central processing). A CPU 420, a memory controller 430, an internal memory device 435, a security circuit 440, and a wireless transceiver 450. Referring to Figures 1, 3 and 6, the ECG patch can include a memory device 460 and a sensor 470.

Referring to FIG. 3 and FIG. 6, the ECG sensor 123 can receive the first high-pass filtered ECG signal ECG_P and the second high-pass filtered ECG signal ECG_N, and process (or amplify) the first high-pass filtered ECG signal ECG_P and the second Qualcomm The voltage difference between the ECG signals ECG_N is filtered and an ECG output corresponding to the result of the processing (or amplification) is generated.

The ADC 410 can convert the ECG output into an ECG digital signal and output the ECG digital signal to the CPU 420. The CPU 420 can analyze the human heart rhythm using the ECG digital signal. The CPU 420 can use the ECG digital signal to detect, predict, or analyze a person's sudden cardiac arrest (SCA). For example, CPU 420 can use ECG digital signals to detect, predict, or analyze cardiac arrhythmias, such as ventricular fibrillation and/or ventricular tachycardia.

The memory controller 430 can transfer the data related to the high pass filtered ECG signals ECG_P and ECG_N to the internal memory device 435 and/or the memory device 460 under the control of the CPU 420, and from the internal memory device 435 and/or Memory device 460 receives data associated with high pass filtered ECG signals ECG_P and ECG_N.

The internal memory device 435 can be a read only memory (ROM), a random access memory (RAM), a dynamic random access memory (DRAM), or a static random access memory (static random access memory). ;SRAM), but not limited to this. The memory device 460 can store a boot image for launching the ECG tile 100, and an application to be executed by the CPU 420. Memory device 460 can include volatile memory and/or non-volatile memory. The volatile memory may be RAM, DRAM or SRAM, but is not limited thereto. The non-volatile memory can be an electrically erasable programmable ROM (EEPROM), a NAND type flash memory, a NOR type flash memory, a magnetic RAM (magnetic RAM), and a spin transfer torque ( MRAM), ferroelectric RAM (FeRAM), phase change RAM (PRAM), resistive RAM (RRAM), holographic memory, molecular electronics memory The body device or the insulator resistance change memory, but is not limited thereto.

The internal memory device 435 and/or the memory device 460 can store information about a person (such as a patient) (eg, patient data) under the control of the memory controller 430 and/or be associated with the high pass filtered ECG signals ECG_P and ECG_N. data of. For example, data including high-pass filtered ECG signals ECG_P and ECG_N, data related to heart rate, data related to arrhythmia, and data related to ventricular tremor (eg, history of ventricular tremor and defibrillation) may be included. History), and/or sensing data generated by sensor 470. For example, the material may be encoded or decoded by the security circuit 440.

The security circuit 440 can encode the data output from the CPU 420 and related to the heart rhythm into security data, and output the encoded security data to the wireless transceiver 450. In addition, security circuitry 440 can decode the data transmitted from wireless transceiver 450 and transmit the decoded data to CPU 420. For example, security circuit 440 can be configured (eg, programmed) to have encryption and decryption code.

The wireless transceiver 450 can transmit the encoded security data output from the secure circuit 440 to an external Internet of Things (IoT) device 500 under control of the CPU 440 (eg, a wireless communication device, a smart watch, a smart type) Telephone, personal computer (PC), wearable computer, mobile internet device, etc.). The ECG processing unit 120-1 can use a communication circuit (e.g., wireless transceiver 450) for connection to the external IoT device 500. For example, the ECG processing unit 120-1 can determine what type of external smart device the communication circuit is connected to.

The wireless transceiver 450 can transmit the data related to the high-pass filtered ECG signals ECG_P and ECG_N (eg, security data or biological data) to the external IoT device 500 via a local area network (LAN), Wireless local area network (WLAN) such as wireless fidelity (Wi-Fi), wireless personal area network (WPAN) such as Bluetooth, wireless universal serial bus (universal) Serial bus; USB), Zigbee connection, universal serial bus (NFC) connection, radio-frequency identification (RFID) connection or mobile cellular network. For example, the mobile communication network may be a 3rd generation (3 ^rd generation; 3G) mobile communication network, the 4th generation (4 ^th generation; 4G) mobile communication network the mobile communication network or Long Term Evolution (long term evolution ; LTE ^TM). For example, the wireless transceiver 450 can include a transceiver and an antenna for data machine communication. The Bluetooth interface supports Bluetooth Low Energy (BLE).

FIG. 7 is a diagram of a material processing system including the ECG signal processing unit 120-1 shown in FIG. 6 according to an exemplary embodiment of the inventive concept. Referring to Figures 6 and 7, a user of the IoT device 500 can execute (e.g., select for use) an application installed in the IoT device 500 (S110).

The communication module (or wireless transceiver) of the IoT device 500 can transmit an information request to the ECG processing unit 120 or 120-1 (hereinafter collectively referred to as 120) under the control of an application executed by the CPU of the IoT device 500 (S120) ). The CPU 420 of the ECG processing unit 120 (e.g., the bioprocessor 120) may request verification by performing an information request via the wireless transceiver 450 (S130).

After the verification is completed, the CPU 420 can read the patient information and the biological information from the memory device 435 or 460 using the memory controller 430, and transmit the patient information and the biological information to the wireless transceiver 450 via the security circuit 440. The wireless transceiver 450 can transmit patient information and biological information to the IoT device 500 via the wireless network (S140).

The application executed by the CPU included in the IoT device 500 can display the patient information 520 and/or the biometric information 530 on the display device 510 of the IoT device 500 (S150). For example, patient information 520 can include age 521, blood type 522, family doctor (medical assistant) 523, and/or patient history 524. Biometric information 530 can include heart rate 531 and ECG waveform 532.

The user of the IoT device 500 can use the patient information 520 and/or the biometric information 530 to determine the status of the patient to which the wearable ECG patch 100 is attached, and perform appropriate medical treatment or emergency diagnosis on the patient based on the result of the determination.

8, 9, and 10 are diagrams illustrating a data processing system including the wearable ECG patch shown in FIG. 1 in accordance with an illustrative embodiment of the inventive concept. Referring to Figure 8, a data processing system 800A can be used to provide telemedicine services. The data processing system 800A can include a wearable ECG patch 100 and a first medical server (health care server) 820 via which the first medical server 820 can be via a wireless network 810 (eg, the Internet or Wi-Fi) Communicates with the wearable ECG patch 100.

According to an example, data processing system 800A can further include a second medical server (health care server) 850, which can be coupled to wearable ECG patch 100 and/or first medical via wireless network 810 The server 820 communicates. For example, a health insurance company and/or an insurance company may manage a second medical server 850 and a database 855.

The wireless transceiver 450 of the wearable ECG patch 100 can transmit data HDATA corresponding to the ECG signals ECG_P and ECG_N. The application may store a uniform resource locator (URL) of the first medical server 820 and/or a URL of the second medical server 850. Therefore, the wireless transceiver 450 of the wearable ECG patch 100 can transmit the data HDATA to the first medical server via the network 810 under the control of the CPU 420 or an application ("app") executed by the CPU 420. 820 (S801) and/or second medical server 850 (S821)

The data HDATA may include ECG signals ECG_P and ECG_N, data generated based on ECG signals ECG_P and ECG_N, and patient information. For example, the data generated based on the ECG signals ECG_P and ECG_N may include information about ventricular tremor, information about ventricular tachycardia, heart rate, arrhythmia, or defibrillation history of the patient, but is not limited thereto.

The wireless network 810 can transmit the data HDATA to the first medical server 820 and/or the second medical server 850 (S803 and/or S821). The first medical server 820 can store the material HDATA in the database 821 (S804), and transmit the data HDATA via the network 830 to the doctor's computing device 845 operating at the medical facility 840 (S805). For example, the doctor's computing device 845 can be a PC or a tablet PC, but is not limited thereto. A doctor can work, for example, at a medical facility, public health center, clinic, hospital, or rescue center.

The doctor can use the data HDATA displayed via the computing device 845 to diagnose the status of the patient and input the diagnostic data into the computing device 845 (S807). The computing device 845 transmits the diagnostic data DDATA to the first medical server 820 via the network 830 (S809), and the first medical server 820 stores the diagnostic data DDATA in the database 821 (S804) and transmits the diagnostic data DDATA. Go to network 810 (S811). The network 810 can transmit the diagnostic data DDATA to the wearable ECG patch 100 (S813) or to the second medical server 850 (S821). The ECG patch 100 can store the diagnostic data DDATA in the memory device 435 or 460. The second medical server 850 can store the diagnostic data DDATA in the database 855 (S823).

Each of the servers 820 and 850 can store each of the data HDATA and DDATA in the databases 821 and 855 or analyze each of the data HDATA and DDATA. Additionally, each of the servers 820 and 850 can transmit the results of the analysis to the networks 810 and 830.

Referring to Figure 9, a data processing system 800B can be used to provide remote medical services. The data processing system 800B can include a wearable ECG patch 100, an IoT device 801 (eg, a smart watch or smart phone), and a first medical server 820 that can communicate with the IoT device 801 via the wireless network 810. The IoT device 801 may be the IoT device 500 illustrated in FIGS. 6 and 7 and described with reference to FIGS. 6 and 7, but is not limited thereto. The data processing system 800A of FIG. 9 is similar in structure and operation to the data processing system 800B of FIG. 8. In addition to the IoT device 801, the wearable ECG patch 100 transmits data to or from the wireless network 810 via the IoT device 801. Wireless network 810 receives the data.

The wearable ECG patch 100 can transmit the material HDATA generated by the wearable ECG patch 100 to the IoT device 801 (S800). For example, the wearable ECG patch 100 can automatically transmit the data HDATA to the IoT device 801 upon request of the IoT device 801 or when an abnormality in the heart function of the patient is detected (S800). The IoT device 801 can transmit the material HDATA to the network 810 (S801) and receive the diagnostic data DDATA output from the network 810 (S813). The IoT device 801 can display the diagnostic data DDATA on the display of the IoT device 801. Accordingly, a user of the IoT device 801 can use the diagnostic data DDATA to provide appropriate medical care or perform first aid to a patient wearing the wearable ECG patch 100.

Referring to Figure 10, a data processing system 900 can be used to provide remote medical services. Data processing system 900 can include a wearable ECG patch 100 and a mobile computing device 910 that can communicate with wearable ECG patch 100 via network 905. Data processing system 900 can further include a medical server (health care server) 915 that can communicate with mobile computing device 910 via network 912.

The wireless transceiver 450 of the wearable ECG patch 100 can transmit the data HDATA corresponding to the ECG signals ECG_P and ECG_N to the mobile computing device 910 via the network 905 under the control of the CPU 420 or the application executed by the CPU 420. (S901).

For example, the mobile computing device 910 can be a smart phone, a tablet PC, a minimally invasive device (MID), an IoT device, an internet of everything (IoE) device, but is not limited thereto. The user of the mobile computing device 910 that can execute the application to be described with reference to FIG. 10 can be a medical team, guardian or passerby. The passerby may be someone who has completed first aid training; however, the inventive concept is not limited thereto.

The application executed by the CPU of the mobile computing device 910 can be represented by a graphic, interface, etc., displayed on the display of the mobile computing device 910. The mobile computing device 910 can transmit the data HDATA to the medical server 915 via the network 912 under the control of the application (S903 and S905). The mobile computing device 910 stores the URL of the inner server 915 so that the mobile computing device 910 can transmit the data HDATA to the medical server 915 corresponding to the URL under the control of the application (S903 and S905).

The medical server 915 can store the data HDATA in the database 917 (S906) and transmit the data HDATA via the network 914 to the computing device 925 of the physician operating at the medical facility 920.

The doctor can use the data HDATA displayed via the computing device 925 to diagnose the state of the patient and input the diagnostic data into the computing device 925 (S907). The computing device 925 can transmit the diagnostic data DDATA to the medical server 915 via the network 914, and the medical server 915 can store the diagnostic data DDATA in the database 917 (S906), and transmit the diagnostic data DDATA via the network 912 to The mobile computing device 910 (S909 and S911). The mobile computing device 910 can display the medical diagnostic data DDATA on the display of the mobile computing device 910. Accordingly, the user of the mobile computing device 910 can use the diagnostic data DDATA to provide appropriate medical care or perform first aid to a patient wearing the wearable ECG patch 100.

As described above, in accordance with an exemplary embodiment of the inventive concept, an ECG patch includes two electrodes and a floating high pass filter, but does not include a bias electrode for applying a bias voltage to a human body. To generate a bias voltage, the ECG patch uses a high pass filter and applies a bias voltage to the human body via the ECG electrode. In other words, since the ECG patch does not include the bias electrode, the apparent size of the ECG patch is reduced in size. In addition, because the ECG patch has a minimum number of electrodes, the contact area between the ECG patch and the skin is minimized, so that the convenience of attaching/detaching the ECG patch to and from the skin is increased, and is also minimized. Attach the area of the skin affected by the electrode.

Although the present invention has been particularly shown and described with reference to the exemplary embodiments thereof, it will be understood by those skilled in the art Various changes in form and detail are made therein.

100‧‧‧ wearable electrocardiogram (ECG) patch
110‧‧‧First patch
111, 151‧‧‧ adhesive layer
112‧‧‧First Electrocardiogram (ECG) Electrode
120, 120-1‧‧‧electrocardiogram (ECG) signal processing unit
121-1‧‧‧First mat
121-2‧‧‧Secondary pads
121-3‧‧‧3rd pad
121-4‧‧‧4th pad
121-5‧‧‧5th pad
122-1‧‧‧First transmission line
122-2‧‧‧Second transmission line
123‧‧‧Electrocardiogram (ECG) sensor
125‧‧‧Voltage regulator
127‧‧ ‧ voltage divider
129‧‧‧ drive
130‧‧‧High-pass filter
131, 133, 134, 136‧‧‧ resistors
132, 135‧‧ ‧ capacitor
140, 142‧‧‧ Electrostatic discharge (ESD) protection circuit
150‧‧‧Second patch
152‧‧‧Second Electrocardiogram (ECG) Electrode
154‧‧‧Battery
170‧‧‧ cable
210‧‧‧ transmission line
220‧‧‧Shielding structure/shield
230‧‧‧ digit line
300‧‧ personal
410‧‧‧ Analog to Digital Converter (ADC)
420‧‧‧Central Processing Unit (CPU)
430‧‧‧ memory controller
435‧‧‧Internal memory device
440‧‧‧Safety Circuit
450‧‧‧Wireless transceiver
460‧‧‧ memory device
470‧‧‧ sensor
500, 801‧‧‧ Internet of Things (IoT) devices
510‧‧‧ display device
520‧‧‧ Patient Information
521‧‧‧ age
522‧‧‧ blood type
523‧‧‧Family doctor (medical assistant)
524‧‧ ‧ medical history
530‧‧‧ Biological Information
531‧‧ ‧ heart rate
532‧‧‧Electrocardiogram (ECG) waveform
800A, 800B, 900‧‧‧ data processing system
810, 830, 905, 912, 914‧‧‧ networks
820‧‧‧First medical server
821, 855, 917‧‧ ‧ database
840, 920‧ ‧ medical institutions
845, 925‧‧‧ computing devices
850‧‧‧Second Medical Server
910‧‧‧Mobile computing device
915‧‧ medical server (health care server)
C, CC, F _C ‧‧‧ capacitor
DDATA, HDATA‧‧‧ data
ECG_N‧‧‧Second high-pass filtered electrocardiogram (ECG) signal
ECG_P‧‧‧ first high-pass filtered electrocardiogram (ECG) signal
I _C ‧‧‧Noise current
IFM‧‧‧electrode interface model
L1‧‧‧ third transmission line
LAYER1‧‧‧ first floor
LAYER4‧‧‧ fourth floor
LAYER5‧‧‧5th floor
LAYER6‧‧‧6th floor
ND‧‧‧ node
R1, R2‧‧‧ resistance value
VDD‧‧‧ operating voltage
VDD/2‧‧‧ drive voltage
V _ECG ‧‧‧ voltage
V _hc ‧‧‧voltage difference
VSS‧‧‧ Grounding voltage
VSS _PCB ‧‧‧Printed circuit board (PCB) ground voltage
W1‧‧‧First wire
W2‧‧‧second wire
W3‧‧‧ third wire
Z _elec ‧‧‧contact impedance
S110, S120, S130, S140, S150, S800, S801, S803, S804, S805, S807, S809, S811, S813, S821, S823, S901, S903, S905, S906, S907, S909, S911‧‧

The above and other features of the inventive concept will become more apparent from the detailed description of the exemplary embodiments. An example perspective view of a wearable electrocardiogram (ECG) patch comprising two ECG electrodes and a floating high pass filter. 2 is a perspective view showing a state in which the wearable ECG patch illustrated in FIG. 1 is placed around a human heart, according to an exemplary embodiment of the inventive concept. 3 is a detailed block diagram of the wearable ECG patch illustrated in FIG. 1 in accordance with an illustrative embodiment of the inventive concept. 4 is a schematic diagram of a layout of a floating high pass filter and an ECG transmission line included in a first patch of the wearable ECG patch illustrated in FIG. 1 according to an exemplary embodiment of the inventive concept. FIG. 5 is a schematic diagram of a layout of a printed circuit board (PCB) included in a first patch of the wearable ECG patch illustrated in FIG. 1 according to an exemplary embodiment of the inventive concept. FIG. 6 is a detailed block diagram of the wearable ECG patch illustrated in FIG. 1 in accordance with an exemplary embodiment of the inventive concept. FIG. 7 is a diagram of a data processing system including the ECG signal processing unit shown in FIG. 6 according to an exemplary embodiment of the inventive concept. 8, 9 and 10 are diagrams illustrating a data processing system including the wearable ECG patch shown in FIG. 1 according to an exemplary embodiment of the inventive concept.

100‧‧‧ wearable electrocardiogram (ECG) patch

110‧‧‧First patch

112‧‧‧First Electrocardiogram (ECG) Electrode

120‧‧‧Electrocardiogram (ECG) signal processing unit

121-1‧‧‧First mat

121-2‧‧‧Secondary pads

121-3‧‧‧3rd pad

121-4‧‧‧4th pad

121-5‧‧‧5th pad

122-1‧‧‧First transmission line

122-2‧‧‧Second transmission line

123‧‧‧Electrocardiogram (ECG) sensor

125‧‧‧Voltage regulator

127‧‧ ‧ voltage divider

129‧‧‧ drive

130‧‧‧High-pass filter

131, 133, 134, 136‧‧‧ resistors

132, 135‧‧ ‧ capacitor

150‧‧‧Second patch

152‧‧‧Second Electrocardiogram (ECG) Electrode

154‧‧‧Battery

170‧‧‧ cable

300‧‧ personal

C, CC, F _C ‧‧‧ Capacitance

ECG_N‧‧‧Second high-pass filtered electrocardiogram (ECG) signal

ECG_P‧‧‧ first high-pass filtered electrocardiogram (ECG) signal

I _C ‧‧‧Noise current

IFM‧‧‧electrode interface model

L1‧‧‧ transmission line

ND‧‧‧ node

R1, R2‧‧‧ resistance value

VDD‧‧‧ operating voltage

VDD/2‧‧‧ drive voltage

V _ECG ‧‧‧ voltage

V _hc ‧‧‧voltage difference

VSS _PCB ‧‧‧ Ground voltage of printed circuit board

W1‧‧‧First wire

W2‧‧‧second wire

W3‧‧‧ third wire

Z _elec ‧‧‧contact impedance

Claims (20)

An electrocardiogram (ECG) patch comprising: a first electrode; a second electrode; a high pass filter configured to receive a bias voltage and provide the bias voltage to the first electrode and the a second electrode; and a signal processing unit configured to generate the bias voltage and provide the bias voltage to the high pass filter. The ECG patch of claim 1, wherein the signal processing unit comprises: a voltage regulator configured to receive an operating voltage; a voltage divider configured to divide the voltage by the voltage A voltage regulated by the regulator to generate the bias voltage; and a driver configured to drive the bias voltage to the high pass filter. The ECG patch of claim 2, wherein the driver is a current driver. The ECG patch of claim 2, wherein the operating voltage is supplied from a battery to the voltage regulator. The ECG patch of claim 1, wherein the high pass filter is a floating high pass filter. An electrocardiogram (ECG) patch, comprising: a first patch comprising a first electrode, a high pass filter, and an ECG signal processing unit; a second patch including a second electrode and a battery; and a cable including a first wire for supplying a bias voltage from the first patch to the second electrode, a second wire for supplying an operating voltage to the second patch, and for providing a ground voltage a third wire to the second patch. The ECG patch of claim 6, wherein the ECG signal processing unit comprises: a voltage regulator configured to receive the operating voltage; a voltage divider configured to divide the The voltage regulator adjusts a voltage to generate the bias voltage; and a driver configured to drive the bias voltage to the high pass filter. The ECG patch of claim 6, wherein the high pass filter is configured to receive the bias voltage from the ECG signal processing unit, to provide the bias voltage to the first An electrode, and the bias voltage is supplied to the second electrode via the first wire. The ECG patch of claim 6, wherein the high pass filter is configured to perform high pass filtering on the first ECG signal detected by the first electrode to generate a first high pass signal, And performing high pass filtering on the second ECG signal detected by the second electrode to generate a second high pass signal, and wherein the ECG signal processing unit is configured to be based on the first high pass filtered ECG signal and the second The ECG output signal is generated by the difference between the high pass filtered ECG signals. The ECG of claim 6, wherein the first patch comprises a printed circuit board having a plurality of layers, and wherein the ECG signal processing unit is disposed at a first layer of the plurality of layers, And the high pass filter is disposed at the last layer of the plurality of layers. The ECG of claim 10, wherein the ECG signal processing unit and the high pass filter are disposed relative to each other. The ECG of claim 10, wherein the transmission line for transmitting the ground voltage is configured to shield the transmission line for transmitting the first high-pass filtered signal. The ECG of claim 12, wherein a shielding layer is disposed between the high pass filter and a signal line of the ECG signal processing unit. An electrocardiogram (ECG) patch comprising: a first electrode configured to detect a first ECG signal; a second electrode configured to detect a second ECG signal; a high pass filter, the group Performing high-pass filtering on the first ECG signal to generate a first high-pass filtered signal, and performing high-pass filtering on the second ECG signal to generate a second high-pass filtered signal; and a signal processing unit configured Generating an ECG output signal based on a difference between the first ECG signal and the second ECG signal, wherein the high pass filter is further configured to generate a first bias voltage based on a drive voltage and to A first bias voltage is supplied to the first electrode, and a second bias voltage is generated based on the driving voltage and the second bias voltage is supplied to the second electrode. The ECG patch of claim 14, wherein the first bias voltage has the same level as the second bias voltage. The ECG patch of claim 14, wherein the first ECG signal is detected when the first bias voltage is applied to a human body, and when the second bias voltage is applied to The second ECG signal is detected by the body of the person. The ECG patch of claim 14, wherein the high pass filter is a floating high pass filter. The ECG patch of claim 14, wherein the high pass filter comprises: a first capacitor connected between the first transmission line and the third transmission line, wherein the first transmission line is connected to the signal a first pad of the processing unit; a second capacitor connected between the first wire and the second transmission line, wherein the second capacitor is connected to a second pad of the signal processing unit; a first resistor, Connected between the third transmission line and the first node, the first node is connected to the fifth pad of the signal processing unit; the second resistor is connected to the first transmission line and the first Between the nodes; a third resistor connected between the first node and the second transmission line; and a fourth resistor connected between the first node and the first wire. The ECG patch of claim 18, wherein the first capacitor and the second capacitor have the same capacitance value as each other, and the first resistor to the fourth resistor have a The same resistance value as each other. The ECG patch of claim 18, wherein the signal processing unit comprises: a voltage regulator coupled to a third pad of the signal processing unit and configured to pass the third a pad receiving an operating voltage and adjusting the operating voltage, wherein the third pad is coupled to a second wire; a voltage divider configured to divide the voltage that has been adjusted by the voltage generator to generate a drive And a driver configured to drive the drive voltage and provide the drive voltage to the high pass filter via the fifth pad.