Electrocardiograph electrode position detection device and detection method thereof

Abstract

The invention belongs to the field of electrocardiosignal acquisition, and relates to an electrocardioelectrode position detection device and a detection method thereof. The device comprises a main control unit, an electrode detection unit, a signal detection processing unit and an output unit, the main control unit is respectively in circuit connection with the electrode detection unit, the signal detection processing unit and the output unit, and the main control unit is a control unit of the device. The electrode detection unit is used for detecting and judging the electrocardiosignal acquisition sensitivity of the device and detecting and judging the connection state of an electrode plate during electrocardiosignal acquisition; the signal detection processing unit is used for detecting and judging whether the connection position of the electrode slice is correct during electrocardiosignal acquisition; according to the electrocardio lead connection simulation training device, a trainee can carry out simulation training on various types of electrocardio lead connection situations, the operation skill of the trainee is improved, and errors in actual operation are avoided.

Description

Technical Field

[0001] The present application belongs to the field of electrocardiogram signal acquisition, and in particular, relates to an electrocardiogram electrode position detection device and a detection method thereof. Background Art

[0002] At present, the electrocardiogram is a non-invasive test used to examine the electrical activity of the heart and is an important tool for the clinical diagnosis of heart disease. The accuracy of the electrocardiogram test results is premised on the accuracy of the lead electrode placement. Incorrect electrode placement will cause distortion of the electrocardiogram waveform and amplitude, which may affect the doctor's correct diagnosis of the patient's heart condition and determination of the treatment plan. For example, if the left and right upper limb electrocardiogram lead electrodes are connected reversely, the direction of the QRS complex may change, mistakenly appearing as a high lateral wall myocardial infarction or an inferior wall myocardial infarction. In addition, if the chest lead electrodes are connected incorrectly, it will also affect the positioning diagnosis of the electrocardiogram, which may lead to inaccurate positioning of myocardial infarction or missed diagnosis. At present, the incidence of misconnection of various types of ECG lead electrodes is between 0.4% and 4%. The situations of ECG lead misconnection generally include: 1. The ECG lead electrodes are connected in reverse, such as the left and right upper limb ECG lead electrodes are connected in reverse; 2. Due to the different age groups and body shapes of the people undergoing ECG examinations, the connection position of the ECG lead electrodes is affected. Although misconnection of ECG lead electrodes is a low-probability event, the number of ECG records today is huge, and the impact of misconnection of lead electrodes cannot be ignored. In order to ensure the accuracy of ECG testing for patients by medical staff, it is necessary to do a lot of practice, learn the connection skills of ECG lead electrodes and the reading and judgment of ECG, so as to improve the accuracy of ECG examinations. Therefore, it is very necessary to provide an ECG electrode position detection device and its detection method in hospitals or medical schools for medical staff or medical students to practice. Summary of the invention

[0003] The purpose of this application is to solve the technical problems raised in the above-mentioned background technology, and to provide an ECG electrode position detection device and a detection method thereof for medical staff and / or medical students to practice, so as to improve the accuracy of ECG examination in clinical practice.

[0004] The specific technical solutions of this application are as follows: An electrocardiogram electrode position detection device, comprising: The main control unit is the control unit of the device; The electrode detection unit includes an oscillating circuit, an oscilloscope and an electrode signal sheet connected in a circuit, and is used to detect and judge the sensitivity of the electrocardiographic signal collection of the device and the connection status of the electrode sheet during the electrocardiographic signal collection through the oscillation frequency and output level value of the oscillating circuit; The signal detection processing unit includes a filter, an amplifier, a rectifier circuit and a comparator connected in a circuit, and is used to detect whether the connection position of the electrode sheet is correct when the ECG signal is collected; The output unit is configured as a DAC circuit and an amplifier, wherein the DAC circuit is configured as one channel and / or multiple channels; The main control unit is respectively connected with the electrode detection unit, the signal detection processing unit and the output unit circuit.

[0005] Furthermore, it also includes a simulated person, wherein the electrode signal sheets are arranged at the ECG collection points inside the chest, wrists and ankles of the simulated person's upper body and are in close contact with the simulated person's skin.

[0006] Furthermore, it also includes an ECG lead connected to the signal detection processing unit and the output unit circuit, and an electrode sheet is arranged on the ECG lead, and the electrode sheet arranged on the ECG lead can meet the needs of ECG signal collection of 1 to 12 leads.

[0007] Furthermore, a result display unit is connected to the main control unit circuit.

[0008] Furthermore, the result display unit includes an ECG monitor and an LED light, wherein the ECG monitor is connected to the ECG leads for generating an ECG report, and the LED light is disposed on the simulator adjacent to the electrode signal sheet for displaying the results.

[0009] Furthermore, the LED lamp can emit green and red lights. When the green light is emitted, it indicates that the connection position of the electrode sheet is correct, and when the red light is emitted, it indicates that the connection position of the electrode sheet is incorrect.

[0010] Furthermore, a battery is included to provide power support for the device.

[0011] A method for detecting the position of an ECG electrode, applied to any of the above-mentioned ECG electrode position detection devices, comprises the following detection steps: S1. Adjust the oscillation frequency of the oscillation circuit in the electrode detection unit to determine the sensitivity of ECG signal acquisition; S2. Obtain the level value output by the electrode detection unit to determine the connection status between the electrode sheet and the electrode signal sheet; S3. Determine the correspondence between the electrode sheet and the electrode signal sheet, that is, determine whether the connection position between the electrode sheet and the electrode signal sheet is correct; S4. Polling detection of each circuit path for the judgment result of step S3; S5. According to the detection results of steps S1 to S4, the output unit outputs the detection results to the result display unit.

[0012] Further, the step of adjusting the oscillation frequency of the oscillation circuit in step S1 includes: S11. Start the device and enter the initialization state; S12 tests the sensitivity of ECG signal acquisition. If it meets the requirements, there is no need to readjust the oscillation frequency of the oscillation circuit. If it does not meet the requirements, proceed to step S13 to readjust the oscillation frequency of the oscillation circuit. S13. Test the sensitivity of ECG signal acquisition at different oscillation frequencies, and select a frequency with a suitable sensitivity for ECG signal acquisition as the oscillation frequency of the oscillation circuit in the device.

[0013] Further, step S2 of determining the connection status between the electrode sheet and the electrode signal sheet includes: S21 determines whether the oscillation circuit is vibrating. If not, the electrode detection unit outputs a high level, indicating that the electrode sheet and the electrode signal sheet are connected, and proceeds to step S3. If yes, the electrode detection unit outputs a low level, indicating that the electrode sheet and the electrode signal sheet are not connected, and then the process goes to step S22; S22. Determine which electrode sheet or electrodes are not connected to the electrode signal sheet: The oscillation circuit detects each electrode signal piece path in turn, and determines which one or which paths of the signal detection processing unit have not detected the input signal. It can then determine which one or which electrode pieces are not connected to the electrode signal piece, and can be manually reconnected, repeating steps S21 to S22.

[0014] Further, step S3 of determining the correspondence between the electrode sheet and the electrode signal sheet, that is, determining whether the connection position of the electrode sheet is correct, includes: S31. Determine the level value of the comparator output in the signal detection processing unit. If it is higher than or equal to the preset threshold of the comparator, it is preliminarily determined that the electrode sheet and the electrode signal sheet are correctly connected; S32. Further determine the corresponding relationship between the connection between the electrode sheet and the electrode signal sheet, and determine whether the signals of each path of the input signal detection processing unit correspond to the signals output by each path of the output unit. If so, the main control unit determines that the corresponding relationship between the electrode sheet and the electrode signal sheet is correct, that is, the connection position is correct. If not, the main control unit determines that the corresponding relationship between the electrode sheet and the electrode signal sheet is wrong, that is, the connection position is wrong.

[0015] Further, step S4 is that the main control unit controls the oscillation circuit to start polling detection on each electrode signal piece circuit in turn after step S3. If step S3 determines that the connection position between the electrode piece and the electrode signal piece is correct, the polling detection adopts multi-channel multiple polling, and the polling duration calculation formula is: , Where T is the total polling time. is the polling duration of each circuit, and n is the number of polling times; If step S3 determines that the connection position between the electrode sheet and the electrode signal sheet is wrong, the main control unit controls the oscillation circuit to start multiple single polling for each electrode signal sheet circuit in turn, and the polling duration calculation formula is: , Where T is the total polling time. Polling duration for each circuit.

[0016] The beneficial effects of this application are: 1. The present application can determine the connection status of the electrode sheet and the electrode signal sheet through the electrode detection unit, and the signal detection processing unit can determine whether the connection position of the electrode sheet and the electrode signal sheet is correct. The color of the LED light and the electrocardiogram report output on the electrocardiogram monitor are used as the output result of whether the ECG lead electrode position is connected correctly or not. Trainees can determine which electrode sheet connection positions are correct and incorrect according to the different color indications of the LED light, and study the changes in the ECG waveform when the electrode sheets are misconnected in combination with the electrocardiogram report, which is helpful for trainees to determine whether the changes in the ECG waveform are caused by the patient's lesions or by the misconnection of the ECG lead electrodes.

[0017] 2. By adjusting the oscillation frequency of the oscillation circuit set in the electrode detection unit, the sensitivity of ECG signal acquisition is avoided to be affected by differences in human body shape, thereby affecting the results of ECG examination. This device is suitable for practicing whether the electrode patch connection is correct during ECG examination on simulated people of different ages. This application can be used by trainees to simulate various types of ECG lead connection situations, improve their own operating skills, and avoid errors in actual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an ECG electrode position detection device; Figure 2 This is a schematic diagram of the working process of the ECG electrode position detection device; Figure 3 It is a flow chart of the ECG electrode position detection method; Figure 4 A schematic diagram of the process for adjusting the oscillation frequency of the oscillation circuit; Figure 5 is the circuit diagram of the oscillator circuit; Figure 6 A schematic diagram of the process of determining the connection status between the electrode sheet and the electrode signal sheet; Figure 7 A schematic diagram of the process for determining whether the electrode sheet connection position is correct; FIG8 is an indication diagram and an electrocardiogram of the correct output of the lead electrode placement in the fifth embodiment of the present application; FIG. 9 is an indication diagram and an electrocardiogram of the incorrect placement of the left and right lower limb electrode pads according to an embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the invention objectives, technical solutions and beneficial effects of the present application, the technical solutions of the present application are described in detail, clearly and completely with specific embodiments in combination with the drawings of the present application.

[0020] The “electrode sheet on the ECG lead” is referred to as “electrode sheet” for short; the “electrode signal sheet set at the ECG collection points inside the chest, wrist and ankle of the simulated upper body” is referred to as “electrode signal sheet” for short. The rectifier circuit and DAC circuit in this application are commonly used circuits in this field.

[0021] In some embodiments, such as Figure 1 As shown, an ECG electrode position detection device includes a main control unit, which is the control component of the device; the electrode detection unit includes an oscillation circuit, an oscilloscope and an electrode signal sheet connected in circuit, and the sensitivity of ECG signal collection can be determined by adjusting the oscillation frequency of the oscillation circuit, and the connection state of the electrode sheet during ECG signal collection can be determined; the signal detection processing unit includes a filter, an amplifier, a rectifier circuit and a comparator connected in circuit, and the collected signal is processed by the filter, the amplifier and the rectifier circuit, and then compared with the threshold value set in the comparator, so as to determine the correspondence between the electrode sheet and the electrode signal sheet, and whether the connection position of the electrode sheet is correct during ECG signal collection can be determined; the output unit is set as a DAC circuit and an amplifier. In this embodiment, the DAC circuit is set as one channel and / or multiple channels.

[0022] Since the thickness of simulated human skin varies among people of different ages, the sensitivity of ECG signal acquisition varies. To obtain accurate ECG signals, the oscillation frequency of the oscillation circuit can be adjusted to solve the problem of sensitivity of the electrode detection unit to detect ECG signals caused by the difference in thickness of simulated human skin. In this embodiment, when adjusting the oscillation frequency, the appropriate oscillation frequency is determined by the change in waveform amplitude displayed on the oscilloscope.

[0023] In some embodiments, a simulated person is also included, and the electrode signal sheet is arranged at the ECG collection points inside the chest, wrists and ankles of the simulated person's upper body, and is close to the simulated person's skin. Figure 2 As shown, the device also includes an ECG lead connected to the signal detection processing unit and the output unit circuit respectively for signal transmission, an electrode sheet is provided at one end of the ECG lead, and an end away from the electrode sheet is connected to an ECG monitor. In some embodiments, the device also includes an LED light connected to the main control unit circuit (such as Figure 2As shown). The LED lights are located adjacent to the electrode signal pieces inside the chest, wrists and ankles of the simulated upper body, and serve as a judgment result on whether the electrode pieces are placed correctly. Combined with FIG8 (a), the solid points in the figure are electrode signal pieces, and the hollow points are LED lights. The LED lights can emit green and red lights. When the electrode pieces correspond to the electrode signal pieces, that is, the connection position is correct, the main control unit controls the LED lights to emit green light. When the electrode pieces do not correspond to the electrode signal pieces, that is, the connection position is wrong, the main control unit controls the LED lights to emit red light. Students can judge whether the electrode piece connection position is correct or not based on the different colors of light emitted by the LED lights at each electrode signal piece, and can intuitively view which and / or which electrode pieces are correctly or incorrectly connected.

[0024] In this device, the result of whether the electrode connection position is correct or not can be controlled by the main control unit and output to the LED light and the ECG monitor at the same time. Trainees can combine the two output results for intuitive learning. Specifically, when the ECG electrodes of the right lower limb RL and the left lower limb LL are connected in reverse, the LED light set near the electrode signal sheet emits a red light, and the ECG is output on the ECG monitor at the same time. Trainees can learn more intuitively and deeply about the changes in the QRS waveform in the ECG caused by the incorrect connection position of the electrode through the corresponding QRS waveform changes on the ECG and the indication of the LED light.

[0025] In some embodiments, a battery is also included to provide power support for the device.

[0026] In some embodiments, such as Figure 3 As shown, a method for detecting the position of an ECG electrode includes the following specific detection steps: S1. Adjust the oscillation frequency of the oscillation circuit in the electrode detection unit to determine the sensitivity of ECG signal acquisition; S2. Obtain the output level value of the electrode detection unit to determine the connection status between the electrode sheet and the electrode signal sheet; S3. Determine the correspondence between the electrode sheet and the electrode signal sheet, that is, determine whether the connection position between the electrode sheet and the electrode signal sheet is correct; S4. Polling detection of each circuit path for the judgment result of step S3; S5. Based on the detection results of steps S1 to S4, a correct or incorrect electrocardiogram report is output on the electrocardiogram monitor, and the main control unit controls the LED light to emit a light of a color corresponding to the result.

[0027] In this embodiment, the electrode sheets are set to RA, RL, LA, LL, V1~V6, and the electrode signal sheets are set to RA', RL', LA', LL', V1'~V6', which can meet the practice of electrode sheet connection positions when collecting ECG signals of any lead from 1 to 12 leads.

[0028] Specifically, adjust the oscillation frequency of the oscillation circuit, such as Figure 4 As shown: This device can be used to practice whether the electrode connection position is correct when collecting ECG signals from adult, child, infant, and newborn simulators. However, due to differences in the simulated skin thickness of simulators of different age groups, such as the simulated skin thickness of adult simulators and infant simulators, and the simulated skin thickness of infant simulators and newborn simulators, if the oscillation circuit uses the same oscillation frequency, it will cause errors in sensitivity when collecting ECG signals, thereby affecting the students' learning and judgment of the ECG signal collection output results. Therefore, it is necessary to readjust the oscillation frequency of the oscillation circuit in this device according to the specific scenarios in which this device is used for simulators of different age groups. The specific steps include: S11. Start the device and enter the initialization state; S12 tests the sensitivity of ECG signal acquisition. If it meets the requirements, there is no need to readjust the oscillation frequency of the oscillation circuit. If it does not meet the requirements, the process proceeds to step S13, and the oscillation frequency of the oscillation circuit is readjusted. S13. Test the sensitivity of ECG signal acquisition at different oscillation frequencies, and select a frequency with a suitable sensitivity for ECG signal acquisition as the oscillation frequency of the oscillation circuit in the device.

[0029] In step S12, the sensitivity of ECG signal acquisition in the initial state is tested. The specific principle is that when the electrode sheets on the ECG leads are connected to and separated from the electrode signal sheets arranged inside the chest, wrists and ankles of the upper body of the simulated person, the amplitude of the oscillation signal generated by the oscillation circuit changes, thereby causing the voltage of the oscillation circuit to change, and the induced signal generated by the electrode sheets to change. The changes in the voltage and the waveform of the induced electric signal before and after the oscillation of the oscillation circuit are observed on the oscilloscope for judgment; If the voltage drop changes greatly before and after the oscillation, and the peak-to-peak value of the induced electrical signal changes relatively greatly, it is judged that the oscillation frequency in the initial state meets the sensitivity of the ECG signal acquisition; If it does not meet the requirements, the process goes to step S13 to readjust the oscillation frequency of the oscillation circuit. Figure 5As shown, by adjusting the values ​​of R1 and R2 in the oscillation circuit to adjust the oscillation frequency of the oscillation circuit, the sensitivity test of the ECG signal acquisition is performed, and according to the judgment method of step S12, a suitable oscillation frequency is determined as the oscillation frequency of the oscillation circuit of the device. In this embodiment, the oscillation frequency can be selected from any value within 10KHz to 1MHz. In some embodiments, Figure 6 As shown, the step of determining the connection status between the electrode sheet and the electrode signal sheet includes: S21. Determine whether the oscillation circuit is vibrating. If not, the electrode detection unit outputs a high level, indicating that the electrode sheet and the electrode signal sheet are connected, and enter step S3. If yes, the electrode detection unit outputs a low level, indicating that the electrode sheet and the electrode signal sheet are not connected, and then enters S22; S22. Determine which electrode sheet or electrodes are not connected to the electrode signal sheet: The oscillation circuit detects each electrode signal piece path in turn, and determines which one or which paths of the signal detection processing unit have not detected the input signal. It can then determine which one or which electrode pieces are not connected to the electrode signal piece, and can be manually reconnected, repeating steps S21 to S22.

[0030] Specifically, the principle of judging whether the oscillation circuit is vibrating is: when the electrode sheet and the electrode signal sheet are close to each other, the inductance on the electrode signal sheet increases, causing the oscillation circuit to be unable to vibrate, the electrode detection unit outputs a high level, and the main control unit judges that the electrode sheet and the electrode signal sheet are connected. On the contrary, when the electrode sheet and the electrode signal sheet are not connected, the inductance on the electrode signal sheet does not change, then the oscillation circuit is vibrating, outputs a low level, and the main control unit judges that the electrode sheet and the electrode signal sheet are not connected.

[0031] In some embodiments, such as Figure 7 As shown, after determining the connection state between the electrode sheet and the electrode signal sheet in step S2, further determine the corresponding relationship between the electrode sheet and the electrode signal sheet, that is, determine whether the connection between the electrode sheet and the electrode signal sheet is correct. The specific detection steps include: S31. Determine the level value of the comparator output in the signal detection processing unit. If it is higher than or equal to the preset threshold of the comparator, it is preliminarily determined that the electrode sheet and the electrode signal sheet are correctly connected; S32. Further determine the correspondence between the connection between the electrode sheet and the electrode signal sheet, determine whether the input signal detection processing unit of each channel signal corresponds to the output signal of each channel of the output unit, If so, it is determined that the correspondence between the electrode sheet and the electrode signal sheet is correct, that is, the connection position is correct. If not, it is determined that the correspondence between the electrode sheet and the electrode signal sheet is wrong, that is, the connection position is wrong.

[0032] In some embodiments, the ECG electrode position detection method further includes performing polling detection on the judgment result of step S3 to ensure that the judgment result of step S3 is accurate. Specifically, after determining that the connection position between the electrode sheet and the electrode signal sheet is correct, the main control unit controls the oscillation circuit to perform multiple polling detections on each electrode signal sheet circuit in turn. The calculation formula for the polling duration is: , Where T is the total polling time. is the polling duration of each circuit, and n is the number of polling times. In this embodiment, the number of polling times is 3, that is, each electrode signal piece circuit is polled 3 times.

[0033] After determining that the connection position between the electrode sheet and the electrode signal sheet is wrong, the main control unit controls the oscillation circuit to perform multiple single polling tests on each electrode sheet circuit in turn. The calculation formula for the polling time is: , Where T is the total polling time. Polling duration for each circuit.

[0034] In this embodiment, the duration of the polling detection is within 100 ms, which ensures the smoothness of the ECG electrode position detection by the device.

[0035] The following takes the five-lead ECG signal acquisition of an adult simulated person as an example to explain the ECG electrode position detection method in detail. Figure 2 As shown in Figure 9.

[0036] First, the device is started and enters the initialization state, and the oscillation frequency of the oscillation circuit in the adult simulator is adjusted to obtain the most appropriate sensitivity for ECG signal collection.

[0037] Place any electrode sheet RA, RL, LA, LL, V4 on the ECG leads on the corresponding electrode signal sheet RA', RL', LA', LL', V4'.

[0038] In this embodiment, the adjustment of the oscillation frequency of the oscillation circuit is specifically explained with RA-RA' and RL-RL', and the oscillation frequency of the oscillation circuit is 80KHz. When the electrodes RA and RL on the ECG leads are placed on and off the RA' and RL' electrode signal sheets corresponding to the simulated person, the voltage change and the peak-to-peak value change of the induced electric signal are observed on the oscilloscope when the electrodes RA and RL are placed on and off the RA' and RL' electrode signal sheets corresponding to the simulated person. If the voltage change and the peak-to-peak value of the induced electric signal change relatively greatly, it is judged that the ECG signal acquisition has good sensitivity at this oscillation frequency. If the voltage change is large and the peak-to-peak value of the induced electric signal changes little, or the voltage change is small and the peak-to-peak value of the induced electric signal changes greatly, it can be judged that the ECG signal acquisition has poor sensitivity at this oscillation frequency, and the oscillation frequency needs to be adjusted to obtain better sensitivity of ECG signal acquisition.

[0039] After determining the oscillation frequency of the oscillation circuit, the connection status of each electrode piece and the electrode signal piece is judged. Specifically, the oscillation circuit polls and detects the electrode signal pieces RA', RL', LA', LL', and V4 in sequence to determine whether each electrode signal piece causes the oscillation circuit to vibrate. If none of them causes the oscillation circuit to vibrate, the electrode detection unit outputs a high level. At the same time, the ECG lead transmits the induction signal generated by the electrode piece to each channel of the signal detection processing unit. If each channel detects the input signal, the main control unit determines that each electrode piece is connected to the electrode signal piece.

[0040] To further determine whether the connection position between the electrode sheet and the electrode signal sheet is correct, after each channel of the signal detection and processing unit detects the input signal, the received input signal is processed by the filter, amplifier and rectifier circuit to form direct current, which is compared with the voltage threshold preset in the comparator to make a judgment. If the output voltage of each channel is greater than or equal to the voltage threshold preset in the comparator, it can be preliminarily determined that the connection position between the electrode sheet and the electrode signal sheet is correct.

[0041] Further determine the correspondence between the electrode sheets RA, RL, LA, LL, V4 and the electrode signal sheets RA', RL', LA', LL', V4', so as to determine whether the connection positions of each electrode sheet and the electrode signal sheet are correct. The specific method is: determine whether the input signals of each electrode sheet path received by the signal detection processing unit match the output signals of the output unit, i.e., multiple DAC circuits. If RA-RA', RL-RL', LA-LA', LL-LL', V4-V4' correspond one to one, the main control unit determines that the connection positions of each electrode sheet and the electrode signal sheet are correct. The main control unit controls the oscillation circuit to start multi-channel multiple polling detection to verify the correspondence between each electrode sheet and the electrode signal sheet. The number of polling times for the correct connection position of the electrode sheet and the electrode signal sheet is set to 3. After the polling is completed, the DAC circuit converts the received digital signal into an analog signal, which is then processed by the amplifier and converted into a signal that can be received by the ECG monitor. The main control unit controls the output unit to output the judgment result to the ECG monitor through the ECG lead. At the same time, the main control unit controls the LED light to emit a green light. As shown in Figure 8 (a), the solid points on the simulated person are electrode signal sheets, and the hollow points are LED lights. Figure 8 (b) is the correct ECG output on the ECG monitor.

[0042] If the corresponding relationship between each electrode piece and the electrode signal piece is RA—RA', LA—LA', RL—LL', LL—RL', V4—V4', it means that the electrodes of the left and right lower limbs are connected incorrectly. The main control unit controls the oscillation circuit to start multi-channel single polling detection, and the number of polling detections is set to 1. After the polling is completed, the DAC circuit converts the received digital signal into an analog signal, which is then processed by the amplifier and converted into a signal that can be received by the ECG monitor. The main control unit controls the output result to output the judgment result to the ECG monitor through the ECG leads. At the same time, the main control unit controls the LED lights set on the left and right lower limbs to emit red lights, and the other electrode signal pieces to emit green lights, as shown in Figure 9.

[0043] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electrocardiogram electrode position detection device, characterized in that: include: The main control unit is the control unit of the device; The electrode detection unit includes an oscillating circuit, an oscilloscope and an electrode signal sheet connected in a circuit, and is used to detect and judge the sensitivity of the electrocardiographic signal collection of the device and the connection status of the electrode sheet during the electrocardiographic signal collection through the oscillation frequency and output level value of the oscillating circuit; The signal detection processing unit includes a filter, an amplifier, a rectifier circuit and a comparator connected in a circuit, and is used to detect whether the connection position of the electrode sheet is correct when the ECG signal is collected; The output unit is configured as a DAC circuit and an amplifier, wherein the DAC circuit is configured as one channel and / or multiple channels; The main control unit is respectively connected with the electrode detection unit, the signal detection processing unit and the output unit circuit.

2. According to claim 1, an ECG electrode position detection device is characterized in that it also includes a simulated person, and the electrode signal sheet is arranged at the ECG collection points inside the chest, wrists and ankles of the simulated person's upper body, and is close to the simulated person's skin.

3. The ECG electrode position detection device according to claim 1, characterized in that: It also includes an electrocardiogram lead connected with the signal detection processing unit and the output unit circuit, and an electrode sheet is arranged on the electrocardiogram lead.

4. The ECG electrode position detection device according to claim 1, characterized in that: It also includes a result display unit connected to the main control unit circuit.

5. The ECG electrode position detection device according to claim 4, characterized in that: The result display unit includes an electrocardiogram monitor and an LED light.

6. According to claim 5, an ECG electrode position detection device has the characteristic that the LED light can emit green and red lights. When the green light is emitted, it indicates that the electrode connection position is correct, and when the red light is emitted, it indicates that the electrode connection position is incorrect.

7. An electrocardiogram electrode position detection device according to any one of claims 1 to 6, characterized in that: Also included is a battery to provide power support for the device.

8. A method for detecting the position of an electrocardiogram electrode, characterized in that: The electrocardiogram electrode position detection device applied to any of claims 1 to 7 comprises the following steps: S1. Adjust the oscillation frequency of the oscillation circuit in the electrode detection unit to determine the sensitivity of ECG signal acquisition; S2. Obtain the level value output by the electrode detection unit to determine the connection status between the electrode sheet and the electrode signal sheet; S3. Determine the correspondence between the electrode sheet and the electrode signal sheet, that is, determine whether the connection position between the electrode sheet and the electrode signal sheet is correct; S4. Polling detection of each circuit path for the judgment result of step S3; S5. According to the detection results of steps S1 to S4, the output unit outputs the detection results to the result display unit.

9. The method for detecting the position of an ECG electrode according to claim 8, characterized in that: The step of adjusting the oscillation frequency of the oscillation circuit in step S1 specifically includes: S11. Start the device and enter the initialization state; S12 tests the sensitivity of ECG signal acquisition. If it meets the requirements, there is no need to readjust the oscillation frequency of the oscillation circuit. If it does not meet the requirements, the process proceeds to step S13 to readjust the oscillation frequency of the oscillation circuit. S13. Test the sensitivity of ECG signal acquisition at different oscillation frequencies, and select a frequency with a suitable sensitivity for ECG signal acquisition as the oscillation frequency of the oscillation circuit in the device.

10. The method for detecting the position of an ECG electrode according to claim 8, characterized in that: Step S2 of determining the connection status between the electrode sheet and the electrode signal sheet includes: S21. Determine whether the oscillation circuit is vibrating. If not, the electrode detection unit outputs a high level, indicating that the electrode sheet and the electrode signal sheet are connected, and proceed to step S3; If yes, the electrode detection unit outputs a low level, indicating that the electrode sheet and the electrode signal sheet are not connected, and then enters S22; S22. Determine which electrode sheet or electrodes are not connected to the electrode signal sheet: The oscillation circuit detects each electrode signal piece path in turn, and determines which one or which paths of the signal detection processing unit have not detected the input signal. It can then determine which one or which electrode pieces are not connected to the electrode signal piece, and can be manually reconnected, repeating steps S21 to S22.

11. The method for detecting the position of an ECG electrode according to claim 8, characterized in that: Step S3 determines the correspondence between the electrode sheet and the electrode signal sheet, that is, the step of determining whether the connection position of the electrode sheet is correct includes: S31. Determine the level value of the comparator output in the signal detection processing unit. If it is higher than or equal to the preset threshold of the comparator, it is preliminarily determined that the electrode sheet and the electrode signal sheet are correctly connected; S32. Further determine the correspondence between the electrode sheet and the electrode signal sheet, determine whether the input signal detection processing unit has a one-to-one correspondence with the output signal of each channel of the output unit, If yes, the main control unit determines that the correspondence between the electrode sheet and the electrode signal sheet is correct, that is, the connection position is correct. If no, the main control unit determines that the correspondence between the electrode sheet and the electrode signal sheet is wrong, that is, the connection position is wrong.

12. The method for detecting the position of an ECG electrode according to claim 8, characterized in that: Step S4 is that the main control unit controls the oscillation circuit to start polling detection on each electrode signal piece circuit in turn after step S3 to determine the correctness of the judgment result of step S3. If step S3 judges that the connection position of the electrode piece and the electrode signal piece is correct, the polling detection adopts multi-channel multiple polling, and the polling duration calculation formula is: , Where T is the total polling time. is the polling duration of each circuit, and n is the number of polling times; If step S3 determines that the connection position between the electrode sheet and the electrode signal sheet is wrong, the main control unit controls the oscillation circuit to start multiple single polling for each electrode signal sheet circuit in turn, and the polling duration calculation formula is: , Where T is the total polling time. Polling duration for each circuit.

Images