CN106725321B - Wearable foot ring for detecting multiple-lead electrocardiograms of human body and detection method thereof - Google Patents

Abstract

The invention provides a wearable foot ring for detecting the electrocardiogram of multiple leads of the human body, which is characterized in that: it includes a flexible ring belt and a waterproof shell; the inner side of the waterproof shell is provided with a dry electrode 1 for fitting the skin of the foot, and the waterproof shell Dry electrode 2 for contacting the skin of the left hand and dry electrode 3 for contacting the skin of the right hand are provided on the outside of the body; a sealed cavity is formed inside the waterproof casing, and a processing module and a power supply module are arranged in the sealed cavity; the processing module includes a data processing circuit, a controller and a wireless signal transmission circuit; the data processing circuit includes a chip U1 whose model is ADS1292. The wearable foot ring can more comprehensively understand the user's ECG data, has a simple structure, small size, convenient use, and has good moisture-proof, sweat-proof and waterproof performance. The invention also provides a detection method for detecting the electrocardiogram of multiple leads of the human body, which can understand the electrocardiogram data of the user more comprehensively, and is easy to operate.

Description

A wearable anklet for detecting multiple leads of the human body's electrocardiogram and its detection method

technical field

The invention relates to the technical field of electrocardiographic signal detection, and more specifically relates to a wearable foot ring for detecting electrocardiograms of multiple leads of a human body and a detection method thereof.

Background technique

With the improvement of people's living standards and the acceleration of the pace of life, the incidence of cardiovascular diseases has risen rapidly and has become one of the main factors threatening human health. This creates a huge economic burden on society and families. At the same time, due to the concealment, suddenness, rapid change and high mortality of cardiovascular events, patients often cannot be treated in time. Therefore, ECG monitoring is of great significance to people's health and life safety.

The hospital’s electrocardiogram detection equipment can detect twelve-lead electrocardiograms. The twelve-lead electrocardiograms include electrocardiograms from leads I to III, chest leads V1 to V6, AVL leads, AVR leads and AVF leads. However, the hospital's electrocardiogram equipment is heavy and difficult to meet the daily real-time monitoring of patients; and the existing electrocardiogram bracelets use optical principles to monitor heart rate, which is difficult to monitor electrocardiogram. A small number of wristbands can monitor ECG, but they can only monitor the first lead ECG, and the obtained ECG information is limited, which cannot meet the needs of monitoring and diagnosis of some diseases.

Contents of the invention

In order to overcome the shortcomings and deficiencies in the prior art, an object of the present invention is to provide an electrocardiogram that detects multiple leads of the human body, can understand the user's electrocardiogram data more comprehensively, has a simple structure, small size, convenient use, and good performance. Wearable anklet with moisture and sweat and water resistance. Another object of the present invention is to provide a detection method that detects multiple leads of the human body's electrocardiogram, can understand the user's electrocardiogram data more comprehensively, and is easy to operate.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a wearable foot ring for detecting the electrocardiogram of multiple leads of the human body, which is characterized in that it includes a flexible ring belt and a waterproof shell; For dry electrode 1 that fits the skin of the feet, dry electrode 2 for contacting the skin of the left hand and dry electrode 3 for contacting the skin of the right hand are provided on the outside of the waterproof casing; a sealed cavity is formed inside the waterproof casing, and a processing module is installed in the sealed cavity and a power module for powering the processing module;

The processing module includes a data processing circuit, a controller and a wireless signal transmission circuit;

Described data processing circuit comprises the chip U1 that model is ADS1292, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, capacitor C7, capacitor C8, capacitor C9 and capacitor C10;

The dry electrode three is connected to the IN1N pin of the chip U1 through the resistor R1, and the dry electrode three is connected to the IN2N pin of the chip U1 through the resistor R3; the dry electrode two is connected to the IN1P pin of the chip U1 through the resistor R2; the dry electrode one is connected through the The resistor R4 is connected to the IN2P pin of the chip U1; the IN2N pin and the IN2P pin of the chip U1 are grounded through the capacitor C1 and the capacitor C2 respectively;

The PGAIN pin of the chip U1 is connected to the PGAIP pin through the capacitor C7; the PGA2N pin of the chip U1 is connected to the PGA2P pin through the capacitor C8; the VREFP pin of the chip U1 is grounded through the capacitor C3 and the capacitor C4; the chip U1 The VCAP1 pin of the chip U1 is grounded through the capacitor C9; the AVDD pin of the chip U1 is grounded through the capacitor C5 and the capacitor C6; the CLKSEL pin of the chip U1 is connected to the AVDD pin through the resistor R5; the VCAP2 pin of the chip U1 is grounded through the capacitor C10 ;The DVDD pin of the chip U1 is connected to the AVDD pin; the VREFN pin, the AVSS pin, and the DGND pin of the chip U1 are grounded;

The CLKSEL pin, PWDN/RESET pin, START pin, DRDY pin, DOUT pin, SCLK pin, DIN pin, CS pin and CLK pin of the chip U1 are respectively connected to the controller; the controller is connected to the wireless Signal transmission circuit connection.

The working principle of the wearable foot ring of the present invention is: the user wears the wearable foot ring on the ankle through a flexible ring belt, and the dry electrode located inside the waterproof casing is in contact with the skin of the foot; during detection, the user's left hand and right hand Contact dry electrode 2 and dry electrode 3 respectively, dry electrode 1, dry electrode 2 and dry electrode 3 respectively output signals, enter chip U1 of model ADS1292 for processing, chip U1 of model ADS1292 has differential amplification, filtering, analog-to-digital conversion and other functions, the first lead ECG signal Lead I can be obtained through the output signals of dry electrode 1 and dry electrode 3, and the second lead ECG signal Lead II can be obtained through the output signals of dry electrode 2 and dry electrode 3; after that, Processed by the controller, ECG signal Lead III of lead III, lead AVL of lead AVL, lead AVR of lead AVR and Lead AVF of lead AVF can be obtained; through the wireless signal transmission circuit to external equipment transmission. The ECG signals of each lead are processed and analyzed by external equipment, which can simplify the structure of the wearable device and reduce its size.

The wearable foot ring of the present invention restores the electrocardiogram of multiple leads of the human body with high precision, and can understand the user's electrocardiogram data more comprehensively; the structure is simple, the volume is small, and the use is convenient; it has good moisture-proof, sweat-proof, and waterproof performances, It is convenient for the user to wear it on any occasion and at any time, and monitor the ECG information at any time to ensure that the abnormal state can be detected in time and the user can be treated in time; the wearable foot ring of the present invention adopts a flexible ring belt, which can better fit the human body The skin can also improve the comfort of the user when wearing it.

Preferably, the CLKSEL pins, PWDN/RESET pins, START pins, DRDY pins, DOUT pins, SCLK pins, DIN pins, CS pins and CLK pins of the chip U1 are respectively connected to the controller That is, the CLK pin is connected to the timer Tiner2 interface of the controller, the DOUT pin, SCLK pin, DIN pin and CS pin are respectively connected to the SPI interface of the controller, and the CLKSEL pin, PWDN/RESET pin, The START pin and the DRDY pin are respectively connected to the GPIO interface of the controller.

The advantage of this design is that it is conducive to speeding up the data transmission speed between the chip U1 and the controller, and is conducive to improving the stability and reliability of data transmission, so that the wearable anklet has good responsiveness. Among them, the controller is connected to the CLK pin to provide the system clock for the chip U1; the controller is connected to the CLKSEL pin to control the selection of internal or external clock; the controller is connected to the PWDN/RESET pin to control the reset of the chip U1 ;The controller is connected to the START pin, which is used to control the chip U1 to start collecting ECG signals; the controller is connected to the DRDY pin, and is used for the chip U1 to notify the controller that the data has been collected and can be read; the DOUT pin It is used to send data to the controller; the DIN pin is used to receive controller instructions; the DIN pin and CS pin are used to set the working mode of the chip U1.

Preferably, the inner side of the waterproof casing is provided with a dry electrode for fitting the skin of the foot—meaning, an installation hole is opened on the side wall of the sealed cavity close to the skin of the foot, and the dry electrode—is arranged in the installation hole— Among them, there is a sealing structure 1 between the dry electrode 1 and the wall of the installation hole 1; the dry electrode 2 for contacting the skin of the left hand and the dry electrode 3 for contacting the skin of the right hand are arranged on the outside of the waterproof casing, and the sealing structure is sealed. There are two mounting holes 2 on the wall of the cavity away from the skin of the feet; the dry electrode 2 and the dry electrode 3 are respectively arranged in the two mounting holes 2, and between the dry electrode 2 and the mounting hole 2 and the dry electrode 3 A sealing structure 2 is provided between the mounting hole 2 and the mounting hole 2 respectively. The advantage of this design is that it can prevent moisture from infiltrating through the gap, further improve the waterproof performance, and make the wearable foot ring have good reliability and safety.

Preferably, the projection hole obtained by projecting the first installation hole onto the plane where the two second installation holes are located is located between the two second installation holes. The design conforms to ergonomics. When the dry electrode 2 and the dry electrode 3 are pressed with both hands at the same time, the force on the left and right of the dry electrode 1 is balanced to fully fit the skin of the foot, further improving the convenience of use and ensuring effective detection.

Preferably, the power module includes:

Lithium battery for powering the processing module;

A charging control module for charging the lithium battery when the charging cable is connected, and using the lithium battery to power the processing module when the charging cable is not connected;

Charging indicator light used to indicate that the lithium battery is charging/full of power;

And the battery indicator light used to indicate that the lithium battery is in a low power state/full power state. The power module is equipped with a charging indicator light and a power indicator light, which is convenient for users to obtain the charging status and power status of the lithium battery, and further improves the convenience of use.

Preferably, the wireless signal transmission circuit refers to a bluetooth transmission circuit; the bluetooth transmission circuit includes:

A data transmission unit used for sending the ECG information processed by the main control circuit to an external Bluetooth device;

And a status light used to identify that the data transfer unit is connected/waiting for connection.

A detection method for detecting multiple lead ECGs of a human body, characterized in that: an ankle ring with three dry electrodes is used to wear on the user's ankle, one of the dry electrodes is located inside the ankle ring to fit the skin of the foot, The other two dry electrodes are located on the outside of the foot ring for contact with the user's hands when testing;

The three dry electrodes output signals respectively and process them to obtain the lead I ECG signal Lead I and the second lead ECG signal Lead II; then the first lead ECG signal Lead I and the second lead ECG signal Lead II are respectively transmitted to the controller for processing to obtain the third lead ECG signal Lead III, the AVL lead ECG signal Lead AVL, the AVR lead ECG signal Lead AVR, and the AVF lead ECG signal Lead AVF; after that, the controller Send the processing results to external devices through wireless communication.

The detection method of the present invention restores the electrocardiogram of multiple leads of the human body with high precision, and can understand the user's electrocardiogram data more comprehensively; it is worn on the ankle by means of an ankle ring, which is convenient for the positioning and fixing of the dry electrode, and is convenient for the user to Monitor ECG information on any occasion and at any time to ensure that abnormal conditions can be detected in time so that users can receive timely treatment.

Preferably, the first lead I ECG signal Lead I and the second lead II ECG signal Lead II are respectively transmitted to the controller for processing to obtain the third lead ECG signal Lead III and the AVL lead ECG signal Lead AVL, AVR lead ECG signal Lead AVR and AVF lead ECG signal Lead AVF refer to:

Lead III＝Lead II-Lead I;

Lead AVR＝-Lead II+0.5×Lead III;

Lead AVL＝Lead I-0.5×Lead II;

Lead AVF＝Lead III+0.5×Lead.

Preferably, the dry electrode located on the inner side of the ankle ring is arranged between the two dry electrodes located on the outer side of the ankle ring, so that when the two dry electrodes located on the outer side of the ankle ring are pressed by both hands at the same time, the dry electrodes located on the inner side of the ankle ring are left and right. Balanced force to fully fit the skin of the foot. This method conforms to ergonomics. When both hands press the two dry electrodes on the outside of the foot ring at the same time, the dry electrodes on the inside of the foot ring are balanced from left to right so as to fully fit the skin of the foot, further improving the convenience of use and ensuring detection be carried out effectively.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. The wearable foot ring of the present invention restores the electrocardiogram of multiple leads of the human body with high precision, and can understand the user's electrocardiogram data more comprehensively; the structure is simple, the volume is small, and the use is convenient; it has good moisture-proof, sweat-proof and waterproof performance, it is convenient for users to wear it on any occasion and at any time, and monitor ECG information at any time to ensure that abnormal conditions can be detected in time and users can receive timely treatment;

2. The wearable foot ring of the present invention adopts a flexible ring belt, which can better fit the human skin, and can also improve the comfort of the user when wearing it;

3. The wearable anklet of the present invention has good responsiveness, fast data transmission speed, stable and reliable transmission;

4. The wearable foot ring of the present invention conforms to the ergonomic design. When the dry electrode 2 and the dry electrode 3 are pressed at the same time with both hands, the force on the left and right of the dry electrode 1 is balanced to fully fit the skin of the foot, which further improves the convenience of use and ensures The detection is carried out effectively;

5. The detection method of the present invention restores the electrocardiogram of multiple leads of the human body with high precision, and can understand the user's electrocardiogram data more comprehensively; it is worn on the ankle by an ankle ring, which is convenient for the positioning and fixing of the dry electrode, and is easy to use The user can monitor the ECG information at any occasion and at any time to ensure that the abnormal state can be detected in time so that the user can receive timely treatment.

Description of drawings

Fig. 1 is a system block diagram of the wearable foot ring of the present invention;

Fig. 2 is the circuit schematic diagram of the data processing circuit in the wearable anklet of the present invention;

Fig. 3 is a schematic diagram of the connection between the chip 1 and the controller in the wearable foot ring of the present invention;

Fig. 4 is one of the structural representations of the wearable foot ring of the present invention;

Fig. 5 is the second structural diagram of the wearable foot ring of the present invention;

Fig. 6 is a detection principle diagram of the wearable foot ring of the present invention;

Fig. 7 is a schematic diagram of the use of the wearable foot ring of the present invention;

Among them, 1 is the waterproof shell, 2 is the dry electrode 2, 3 is the dry electrode 3, 4 is the dry electrode 1, 5 is the flexible ring belt, and 6 is the wearable foot ring.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Embodiment one

In this embodiment, the wearable foot ring for detecting the electrocardiogram of multiple leads of the human body has a structure as shown in FIGS. 1 to 7 ; The inner side of the waterproof case 1 is provided with a dry electrode 1 for fitting the skin of the foot, and the outer side of the waterproof case 1 is provided with a dry electrode 2 for contacting the skin of the left hand and a dry electrode 3 for contacting the skin of the right hand; the waterproof case 1 A sealed chamber is formed inside, and a processing module and a power supply module for supplying power to the processing module are arranged in the sealed chamber.

Specifically, a mounting hole 1 is provided on the side wall of the sealed chamber close to the skin of the feet, a dry electrode 4 is arranged in the mounting hole 1, and a sealing structure is provided between the dry electrode 4 and the wall of the mounting hole 1 one. There are two installation holes 2 on the side wall of the sealed cavity away from the skin of the feet; the dry electrode 2 and the dry electrode 3 are respectively arranged in the two installation holes 2, and the dry electrode 2 and the installation hole 2 And a sealing structure 2 is provided between the dry electrode 3 3 and the installation hole 2 respectively.

The processing module includes a data processing circuit, a controller and a wireless signal transmission circuit;

The data processing circuit includes ADS1292 chip U1, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, capacitor C6, Capacitor C7, capacitor C8, capacitor C9 and capacitor C10;

The dry electrode three is connected to the IN1N pin of the chip U1 through the resistor R1, and the dry electrode three is connected to the IN2N pin of the chip U1 through the resistor R3; the dry electrode two is connected to the IN1P pin of the chip U1 through the resistor R2; the dry electrode one is connected through the The resistor R4 is connected to the IN2P pin of the chip U1; the IN2N pin and the IN2P pin of the chip U1 are grounded through the capacitor C1 and the capacitor C2 respectively;

The PGAIN pin of the chip U1 is connected to the PGAIP pin through the capacitor C7; the PGA2N pin of the chip U1 is connected to the PGA2P pin through the capacitor C8; the VREFP pin of the chip U1 is grounded through the capacitor C3 and the capacitor C4; the chip U1 The VCAP1 pin of the chip U1 is grounded through the capacitor C9; the AVDD pin of the chip U1 is grounded through the capacitor C5 and the capacitor C6; the CLKSEL pin of the chip U1 is connected to the AVDD pin through the resistor R5; the VCAP2 pin of the chip U1 is grounded through the capacitor C10 ;The DVDD pin of the chip U1 is connected to the AVDD pin; the VREFN pin, the AVSS pin, and the DGND pin of the chip U1 are grounded;

The CLKSEL pin, PWDN/RESET pin, START pin, DRDY pin, DOUT pin, SCLK pin, DIN pin, CS pin and CLK pin of the chip U1 are respectively connected to the controller; the controller is connected to the wireless Signal transmission circuit connection.

The working principle of the wearable foot ring of the present invention is: the user wears the wearable foot ring on the ankle through the flexible ring 5, and the dry electrode-4 located inside the waterproof casing 1 is in contact with the skin of the foot; during detection, the user The left hand and the right hand touch dry electrode 2 and dry electrode 3 respectively, and dry electrode 1 4, dry electrode 2 and dry electrode 3 output signals respectively, and enter the chip U1 of model ADS1292 for processing. Chip U1 of model ADS1292 has Differential amplification, filtering, analog-to-digital conversion and other functions, the first lead ECG signal Lead I can be obtained through the output signals of dry electrode 1 4 and dry electrode 3 3, and the output signal of dry electrode 2 2 and dry electrode 3 3 can be obtained Lead II ECG signal Lead II; after processing by the controller, the ECG signal Lead III lead III, lead AVL ECG signal Lead AVL, AVR lead ECG lead AVR and AVF lead ECG signal can be obtained The electrical signal Lead AVF, as shown in Figure 6, is transmitted to external devices through a wireless signal transmission circuit. The ECG signals of each lead are processed and analyzed by external equipment, which can simplify the structure of the wearable device and reduce its size.

The wearable foot ring of the present invention restores the electrocardiogram of multiple leads of the human body with high precision, and can understand the user's electrocardiogram data more comprehensively; the structure is simple, the volume is small, and the use is convenient; it has good moisture-proof, sweat-proof, and waterproof performances, It is convenient for the user to wear it on any occasion and at any time, and monitor the ECG information at any time to ensure that the abnormal state can be detected in time and the user can be treated in time; the wearable foot ring of the present invention adopts a flexible ring belt, which can better fit the human body The skin can also improve the comfort of the user when wearing it.

Among them, the CLK pin is connected to the timer Tiner2 interface of the controller, the DOUT pin, SCLK pin, DIN pin and CS pin are respectively connected to the SPI interface of the controller, the CLKSEL pin, PWDN/RESET pin, START pin and DRDY pin are respectively connected with the GPIO interface of the controller.

The advantage of this design is that it is conducive to speeding up the data transmission speed between the chip U1 and the controller, and is conducive to improving the stability and reliability of data transmission, so that the wearable anklet has good responsiveness. Among them, the controller is connected to the CLK pin to provide the system clock for the chip U1; the controller is connected to the CLKSEL pin to control the selection of internal or external clock; the controller is connected to the PWDN/RESET pin to control the reset of the chip U1 ;The controller is connected to the START pin, which is used to control the chip U1 to start collecting ECG signals; the controller is connected to the DRDY pin, and is used for the chip U1 to notify the controller that the data has been collected and can be read; the DOUT pin It is used to send data to the controller; the DIN pin is used to receive controller instructions; the DIN pin and CS pin are used to set the working mode of the chip U1.

The wearable foot ring of the present invention has a waterproof design, which can prevent moisture from seeping through the gap, further improves the waterproof performance, and makes the wearable foot ring have good reliability and safety.

The projection hole obtained by projecting the installation hole 1 onto the plane where the two installation holes 2 are located is located between the two installation holes 2. The design conforms to ergonomics. When the dry electrode 2 and the dry electrode 3 are pressed with both hands at the same time, the dry electrode 1 is balanced around the force to fully fit the skin of the foot, further improving the convenience of use and ensuring effective detection.

The power module includes:

Lithium battery for powering the processing module;

A charging control module for charging the lithium battery when the charging cable is connected, and using the lithium battery to power the processing module when the charging cable is not connected;

Charging indicator light used to indicate that the lithium battery is charging/full of power;

And the battery indicator light used to indicate that the lithium battery is in a low power state/full power state. The power module is equipped with a charging indicator light and a power indicator light, which is convenient for users to obtain the charging status and power status of the lithium battery, and further improves the convenience of use.

The wireless signal transmission circuit refers to the Bluetooth transmission circuit; the Bluetooth transmission circuit includes:

A data transmission unit used for sending the ECG information processed by the main control circuit to an external Bluetooth device;

And a status light used to identify that the data transfer unit is connected/waiting for connection.

Embodiment two

In this embodiment, the detection method for detecting multiple lead ECGs of the human body adopts an ankle ring with three dry electrodes worn on the user's ankle, one of which is located inside the ankle ring to fit the skin of the foot, and the other two The dry electrodes are located on the outside of the foot ring for contact with both hands of the user during testing;

The three dry electrodes output signals respectively and process them to obtain the lead I ECG signal Lead I and the second lead ECG signal Lead II; then the first lead ECG signal Lead I and the second lead ECG signal Lead II are respectively transmitted to the controller for processing to obtain the third lead ECG signal Lead III, the AVL lead ECG signal Lead AVL, the AVR lead ECG signal Lead AVR, and the AVF lead ECG signal Lead AVF; after that, the controller Send the processing results to external devices through wireless communication.

The detection method of the present invention restores the electrocardiogram of multiple leads of the human body with high precision, and can understand the user's electrocardiogram data more comprehensively; it is worn on the ankle by means of an ankle ring, which is convenient for the positioning and fixing of the dry electrode, and is convenient for the user to Monitor ECG information on any occasion and at any time to ensure that abnormal conditions can be detected in time so that users can receive timely treatment.

The first lead electrocardiographic signal Lead I and the second lead electrocardiographic signal Lead II are respectively transmitted to the controller for processing to obtain the third lead electrocardiographic signal Lead III, the AVL lead electrocardiographic signal Lead AVL, AVR lead ECG signal Lead AVR and AVF lead ECG signal Lead AVF refer to:

Lead III＝Lead II-Lead I;

Lead AVR＝-Lead II+0.5×Lead III;

Lead AVL＝Lead I-0.5×Lead II;

Lead AVF＝Lead III+0.5×Lead.

Preferably, the dry electrode located on the inner side of the ankle ring is arranged between the two dry electrodes located on the outer side of the ankle ring, so that when the two dry electrodes located on the outer side of the ankle ring are pressed by both hands at the same time, the dry electrodes located on the inner side of the ankle ring are left and right. Balanced force to fully fit the skin of the foot. This method conforms to ergonomics. When both hands press the two dry electrodes on the outside of the foot ring at the same time, the dry electrodes on the inside of the foot ring are balanced from left to right so as to fully fit the skin of the foot, further improving the convenience of use and ensuring detection be carried out effectively.

The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplifications should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (9)

1. A wearable foot ring for detecting a plurality of lead electrocardiograms of the human body, characterized in that: it comprises a flexible ring belt and a waterproof casing; the inside of the waterproof casing is provided with a dry electrode one for fitting the skin of the foot, and the waterproof casing A dry electrode 2 for contacting the skin of the left hand and a dry electrode 3 for contacting the skin of the right hand are provided on the outside of the body; a sealed cavity is formed inside the waterproof casing, and a processing module and a power supply module for supplying power to the processing module are arranged in the sealed cavity; The processing module includes a data processing circuit, a controller and a wireless signal transmission circuit; Described data processing circuit comprises the chip U1 that model is ADS1292, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, capacitor C7, capacitor C8, capacitor C9 and capacitor C10; The dry electrode three is connected to the IN1N pin of the chip U1 through the resistor R1, and the dry electrode three is connected to the IN2N pin of the chip U1 through the resistor R3; the dry electrode two is connected to the IN1P pin of the chip U1 through the resistor R2; the dry electrode one is connected through the The resistor R4 is connected to the IN2P pin of the chip U1; the IN2N pin and the IN2P pin of the chip U1 are grounded through the capacitor C1 and the capacitor C2 respectively; The PGAIN pin of the chip U1 is connected to the PGAIP pin through the capacitor C7; the PGA2N pin of the chip U1 is connected to the PGA2P pin through the capacitor C8; the VREFP pin of the chip U1 is grounded through the capacitor C3 and the capacitor C4; the chip U1 The VCAP1 pin of the chip U1 is grounded through the capacitor C9; the AVDD pin of the chip U1 is grounded through the capacitor C5 and the capacitor C6; the CLKSEL pin of the chip U1 is connected to the AVDD pin through the resistor R5; the VCAP2 pin of the chip U1 is grounded through the capacitor C10 ;The DVDD pin of the chip U1 is connected to the AVDD pin; the VREFN pin, the AVSS pin, and the DGND pin of the chip U1 are grounded; The CLKSEL pin, PWDN/RESET pin, START pin, DRDY pin, DOUT pin, SCLK pin, DIN pin, CS pin and CLK pin of the chip U1 are respectively connected to the controller; the controller is connected to the wireless Signal transmission circuit connection. 2. The wearable foot ring for detecting the electrocardiogram of multiple leads of the human body according to claim 1, characterized in that: the CLKSEL pin, PWDN/RESET pin, START pin, DRDY pin, DOUT pin of the chip U1 Pins, SCLK pins, DIN pins, CS pins and CLK pins are respectively connected to the controller. The CLK pin is connected to the timer Tiner2 interface of the controller. The and CS pins are respectively connected to the SPI interface of the controller, and the CLKSEL pin, PWDN/RESET pin, START pin and DRDY pin are respectively connected to the GPIO interface of the controller. 3. The wearable foot ring for detecting a plurality of lead ECGs of the human body according to claim 1, characterized in that: the inner side of the waterproof casing is provided with a dry electrode finger for fitting the skin of the foot, and the sealed cavity is close to One side cavity wall of the foot skin is provided with a mounting hole 1, a dry electrode 1 is arranged in the mounting hole 1, and a sealing structure 1 is provided between the dry electrode 1 and the wall of the mounting hole 1; There are dry electrode 2 for contacting the skin of the left hand and dry electrode 3 for contacting the skin of the right hand. Two installation holes 2 are opened on the wall of the sealed cavity away from the skin of the feet; dry electrode 2 and dry electrode 3 are respectively It is arranged in two mounting holes 2, and a sealing structure 2 is provided between the dry electrode 2 and the mounting hole 2 and between the dry electrode 3 and the mounting hole 2 respectively. 4. The wearable anklet for detecting multiple lead ECGs of the human body according to claim 3, characterized in that: the projection hole obtained by projecting the first installation hole to the plane where the two installation holes are located is located at the two installation holes two between. 5. The wearable anklet for detecting multiple lead ECGs of the human body according to claim 1, characterized in that: the power module includes: Lithium battery for powering the processing module; A charging control module for charging the lithium battery when the charging cable is connected, and using the lithium battery to power the processing module when the charging cable is not connected; Charging indicator light used to indicate that the lithium battery is charging/full of power; And the battery indicator light used to indicate that the lithium battery is in a low power state/full power state. 6. The wearable anklet for detecting the electrocardiogram of multiple leads of the human body according to claim 1, characterized in that: the wireless signal transmission circuit refers to a Bluetooth transmission circuit; the Bluetooth transmission circuit includes: A data transmission unit used for sending the ECG information processed by the main control circuit to an external Bluetooth device; And a status light used to identify that the data transfer unit is connected/waiting for connection. 7. A detection method for detecting a plurality of lead electrocardiograms of a human body, which is used for the wearable foot ring for detecting a plurality of lead electrocardiograms of a human body according to claim 1, characterized in that: the foot ring with three dry electrodes is used to wear On the user's ankle, one of the dry electrodes is located on the inner side of the ankle ring to fit the skin of the foot, and the other two dry electrodes are located on the outer side of the ankle ring for contact with the user's hands when testing; The three dry electrodes output signals respectively and process them to obtain the lead I ECG signal Lead I and the second lead ECG signal LeadII; then the first lead ECG signal LeadI and the second lead ECG signal Lead II respectively It is transmitted to the controller for processing to obtain the ECG signal Lead III of lead III, lead AVL of lead AVL, lead AVR of lead AVR and lead AVF of lead AVF; after that, the controller will process Results are sent to external devices via wireless communication. 8. The detection method for detecting a plurality of lead ECGs of a human body according to claim 7, characterized in that: the first lead I ECG signal Lead I and the second lead II ECG signal Lead II are respectively transmitted to the control The ECG signal LeadIII of lead III, lead AVL of lead AVL, lead AVR of lead AVR and lead AVF of lead AVF are obtained through processing in the device: Lead III＝Lead II-Lead I; Lead AVR＝-Lead II+0.5×Lead III; Lead AVL＝Lead I-0.5×Lead II; Lead AVF＝Lead III+0.5×Lead. 9. The detection method for detecting a plurality of lead ECGs of a human body according to claim 7, characterized in that: the dry electrode positioned on the inside of the ankle ring is arranged between the two dry electrodes positioned on the outside of the ankle ring, so that both hands can simultaneously When pressing the two dry electrodes located on the outside of the ankle ring, the dry electrodes located on the inside of the ankle ring will be balanced from left to right to fully fit the skin of the foot.

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