Electrocardiogram and magnetocardiogram signal acquisition magnetic shielding system and feature fusion system

Abstract

The invention belongs to the field of biomedical signal acquisition, and discloses an electrocardio and magnetocardiogram signal acquisition magnetic shielding system and a feature fusion system.The shielding system comprises an acquisition equipment selection module used for judging the body state of a user in the current state and selecting corresponding signal acquisition equipment; the wearable structure selection module is used for preparing a corresponding wearable structure and collecting electrocardio and magnetocardiogram signals by using a magnetic shielding technology; the wearable equipment assembly module is used for carrying out assembly operation based on the selected signal acquisition equipment and the prepared wearable structure and forming wearable equipment; the wearable device wearing module is used for adjusting the tightness degree of the wearable device according to the body shape of the user and wearing the wearable device on the body of the user; the signal acquisition and transmission module is used for simultaneously detecting an electrocardiosignal and a magnetocardiogram signal of a user by using the wearable equipment, and synchronously transmitting the electrocardiosignal and the magnetocardiogram signal outwards.

Description

Technical Field

[0001] The present invention relates to the technical field of biomedical signal acquisition, and in particular to a magnetic shielding system for acquiring electrocardiogram and magnetocardiogram signals and a feature fusion system. Background Art

[0002] The electrocardiogram signal is used to record the heart's bioelectrical signals, while the cardiac magnetic field is generated by the periodic contraction and relaxation of the heart's atrial and ventricular muscles accompanied by complex alternating bioelectric currents. The corresponding detected signal is the cardiac magnetic signal.

[0003] However, existing ECG and MCG signal acquisition systems usually require data to be collected at different times and locations, and then the data is fused in subsequent analysis, which may lead to incomplete information and timeliness issues.

[0004] Therefore, in view of this, the existing structure is studied and improved to provide a magnetic shielding system and feature fusion system for collecting electrocardiogram and magnetic heart signals. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a magnetic shielding system for collecting ECG and MCG signals and a feature fusion system, which can ensure the integrity and timeliness of ECG and MCG signals, while establishing real-time monitoring and remote access, in order to achieve a more practical purpose.

[0006] The present invention discloses a magnetic shielding system for collecting electrocardiographic and magnetic cardiotonic signals, the system comprising: a collection device selection module, a wearable structure selection module, a wearable device assembly module, a wearable device wearing module and a signal collection and transmission module;

[0007] The acquisition device selection module is used to determine the user's current physical state and select the corresponding signal acquisition device;

[0008] The wearable structure selection module is used to prepare a corresponding wearable structure using magnetic shielding technology to collect electrocardiogram and magnetic heart signals;

[0009] The wearable device assembly module is used to perform assembly operations based on the selected signal acquisition device and the prepared wearable structure, and form a wearable device;

[0010] The wearable device wearing module is used to adjust the tightness of the wearable device according to the body shape of the user, so as to wear the wearable device on the user's body;

[0011] The signal acquisition and transmission module is used to use the wearable device to simultaneously detect the user's electrocardiogram signal and magnetocardiogram signal, and synchronously transmit the electrocardiogram signal and magnetocardiogram signal to the outside.

[0012] Preferably, in the acquisition device selection module, an electrode sheet with a wire is selected to detect the electrocardiographic signal, and a magnetocardiographic acquisition device box is selected to detect the magnetocardiographic signal.

[0013] Preferably, in the wearable structure selection module, the corresponding wearable structure is prepared by using magnetic shielding technology, and the collection of electrocardiogram and magnetic heart signals includes:

[0014] When selecting the material for the wearable structure, a combination of nickel alloy material and cotton cloth material is selected;

[0015] In the specific application of magnetic shielding, firstly, a nickel alloy material with low magnetic shielding effect is wrapped on the outside of the signal acquisition equipment as a high conductivity shielding body, and a magnetic coating is coated on the outside of the nickel alloy to form an inefficient magnetic shielding. Then, on the basis of the inefficient magnetic shielding, an eddy current field is established based on the eddy current effect of the high conductivity shielding body. On the one hand, the conductor generates heat and attenuates the electromagnetic field. On the other hand, a magnetic field opposite to the original magnetic field is generated to offset part of the original magnetic field to form an efficient magnetic shielding. The magnetic shielding and the efficient magnetic shielding are comprehensively offset to form a multi-level magnetic shielding.

[0016] Preferably, in the wearable device assembly module, when assembling the wearable device, the signal acquisition device is fixed to the inner surface of the wearable structure;

[0017] In the wearable device wearing module, when the wearable device is worn, the wearable device is fixed on the surface of the user's body, and at the same time, the signal acquisition device is aligned with the skin where the heart is located.

[0018] Preferably, the wearable device comprises two straps with tightening buckles, the two straps with tightening buckles are arranged in parallel, and battery compartments are fixedly arranged at two ends of the straps with tightening buckles, a storage bag is arranged between the two battery compartments, and an electrode sheet with a wire is fixedly connected to one side of the battery compartment close to the straps with tightening buckles;

[0019] A film is attached to the battery compartment and on the side close to the strap with the tightening buckle;

[0020] A zipper-type bag opening is fixedly provided at the top of the storage cloth bag, and a plurality of square holes are opened on the side of the storage cloth bag near the side of the strap with the tightening buckle;

[0021] A hard sliding buckle is fixedly provided on the side of the battery compartment;

[0022] A sliding rod is fixedly arranged on the side of the storage cloth bag, the hard sliding buckle slides along the sliding rod, and a clamp is clamped on the side of the sliding rod near the hard sliding buckle.

[0023] The present invention also discloses a characteristic fusion system of electrocardiogram and magnetic heart signals, comprising an acquisition module, the acquisition module is used to receive signals sent from the electrocardiogram and magnetic heart signal acquisition magnetic shielding system, and also comprises: a fusion module, an imaging module and a monitoring module;

[0024] The fusion module is used to load the feature fusion algorithm at the signal terminal, integrate the ECG and MCG signals and perform evaluation;

[0025] The imaging module is used to present real-time three-dimensional electrocardiographic and magnetic cardiographic imaging at the signal terminal based on imaging technology;

[0026] The monitoring module is used to monitor the electrocardiogram and magnetic heart signals of the wearable device in real time, and to establish a signal connection between the user terminal and the signal terminal.

[0027] Preferably, in the fusion module, when performing the feature fusion algorithm, the FPN algorithm is used for calculation.

[0028] Preferably, in the fusion module, evaluating the fused ECG and MCG signals includes:

[0029]

[0030] Among them, Q 心电(min) is the minimum value of the standard value range of the ECG signal, Q 心电检测值 is the ECG signal detection value, Q 心电(max) is the maximum value of the standard value range of the ECG signal, Q 心磁(min) is the minimum value of the standard value range of the magnetic cardiotonic signal, Q 心磁检测值 is the detection value of the magnetic cardiotonic signal, Q 心磁(max) It is the maximum value of the standard value range of the magnetic cardiotonic signal.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] ① This solution is to use ECG and MCG signal detection equipment in conjunction with wearable devices to facilitate the synchronous detection of ECG and MCG signals, and use magnetic shielding technology to improve the detection accuracy of the signal. The detected signal is then sent to the signal terminal through the signal device. The signal terminal fuses the signal data through a fusion algorithm and a judgment formula to ensure the integrity and timeliness of the ECG and MCG signals. At the same time, real-time monitoring and remote access are established to facilitate timely judgment and the proposal of targeted solutions.

[0033] ② In this solution, when collecting ECG and MCG signals, the wearable device is worn on the body, and the tightness and wearing position of the device are adjusted to ensure that the wearable device can accurately and timely detect ECG and MCG signals. At the same time, the time for collection and data fusion is reduced, the timeliness of data is improved, and the wearable device realizes friendly collection of cardiac data, and provides more complete, consistent and accurate cardiac information through the signal device, which is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 A schematic flow chart of a magnetic field collection and shielding method according to an embodiment of the present invention;

[0036] Figure 2 A three-dimensional schematic diagram of a wearable device according to an embodiment of the present invention Figure 1 ;

[0037] Figure 3 For the embodiment of the present invention Figure 2 The structural diagram of the enlarged part A in the middle;

[0038] Figure 4 A three-dimensional schematic diagram of a wearable device according to an embodiment of the present invention Figure 2 ;

[0039] Figure 5 Schematic diagram of the feature fusion method according to an embodiment of the present invention.

[0040] Explanation of the numbers in the figure: 1. Strap with drawstring buckle; 2. Battery compartment; 201. Film; 202. Hard slide buckle; 3. Storage bag; 301. Zipper bag opening; 302. Square hole; 303. Slide rod; 304. Clip; 4. Electrode sheet with wire. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] First, some technical terms used in the present invention are explained:

[0044] Magnetic shielding technology uses components made of conductive materials or ferromagnetic materials to reduce or suppress the impact of electromagnetic fields on designated areas. This technology is mainly used to protect electronic equipment and systems from external electromagnetic interference, and can also prevent internal electromagnetic interference from affecting external equipment. Magnetic shielding technology can be divided into the following types: 1. Electrostatic shielding: mainly prevents the influence of electrostatic fields and constant magnetic fields, and requires a good shielding body and grounding. 2. Magnetic field shielding: Use high magnetic permeability materials to make shielding bodies to bypass interfering magnetic flux, avoid interference and cross-connection with the protected circuit, and reduce the impact of external magnetic fields on the circuit. 3. Electromagnetic shielding: Prevent the influence of alternating electric fields, alternating magnetic fields and alternating electromagnetic fields, requiring the shielding body to have good conductive continuity, and the conductivity requirements are higher than electrostatic shielding.

[0045] An electrode with a wire is a medical device that is usually used to deliver electrical stimulation to the human body to achieve therapeutic, rehabilitation or cosmetic effects. The following are its main components and working principles: Main components: 1 Conductive material: responsible for conducting electrical energy from the physical therapy device to the human body. 2 Patch material: usually soft and breathable, such as tape or fabric, to ensure fit and comfort with the skin. 3 Connecting wire: The wire that connects the electrode and the treatment instrument is usually soft and durable. 4 Temperature sensor (optional): In some electrode patches, it is used to monitor and control the temperature of the electrode patch. 5 Heating device (optional): Some electrode patches have a built-in heating function to provide warm therapy. Working principle: · Principle of electrical stimulation: The electrode patch contacts the human nerve and muscle organs through the skin, transmits electrical stimulation signals to the human body, causes muscle contraction and relaxation, promotes blood circulation, relieves pain and other effects. · Temperature control: Some electrode patches have a temperature control function to prevent overheating and provide a more comfortable use experience.

[0046] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Embodiment 1

[0048] As can be seen from the background technology,

[0049] The electrocardiogram signal is used to record the heart's bioelectrical signals, while the cardiac magnetic field is generated by the periodic contraction and relaxation of the heart's atrial and ventricular muscles accompanied by complex alternating bioelectric currents. The corresponding detected signal is the cardiac magnetic signal.

[0050] However, existing ECG and MCG signal acquisition systems usually require data to be collected at different times and locations, and then the data is fused in subsequent analysis, which may lead to incomplete information and timeliness issues.

[0051] like Figure 1-Figure 4 As shown, an embodiment of the present invention provides a magnetic shielding system for collecting electrocardiographic and magnetic cardiographic signals, the system comprising: a collection device selection module, a wearable structure selection module, a wearable device assembly module, a wearable device wearing module and a signal collection and transmission module;

[0052] The acquisition device selection module is used to select a signal acquisition device based on the user's physical state: determine the user's current physical state and select the corresponding signal acquisition device;

[0053] The wearable structure selection module is used to select the wearable structure: using magnetic shielding technology, the corresponding wearable structure is prepared to eliminate external interference when collecting ECG and MCG signals to obtain high-quality signals;

[0054] The wearable device assembly module is used for the assembly of wearable devices: based on the signal acquisition device and the wearable structure, the assembly operation is performed to form a wearable device;

[0055] The wearable device wearing module is used for wearing the wearable device: adjusting the tightness of the wearable device according to the user's body shape, and wearing the wearable device on the user's body;

[0056] The signal acquisition and transmission module is used for the synchronous acquisition, recording and transmission of ECG and MCG signals: the wearable device detects the user's ECG and MCG signals simultaneously, and transmits them synchronously.

[0057] When evaluating the user's heart function, it can be used in conjunction with wearable devices to monitor the user's electrocardiogram and magnetic heart signals in real time, allowing the user to manage their heart health more proactively.

[0058] In this embodiment, if Figure 1 As shown, in the acquisition device selection module, based on the detection of ECG signals, an electrode sheet with a wire is selected to detect ECG signals, and based on the detection of magnetocardiographic signals, a magnetocardiographic acquisition device box is selected.

[0059] According to the difference between ECG signal and magnetocardiographic signal detection, the corresponding equipment is selected for detection, and the two different equipment are used synchronously to realize the synchronous detection of ECG and magnetocardiographic signals.

[0060] In this embodiment, if Figure 1 As shown, in the wearable structure selection module, magnetic shielding technology is combined when selecting the wearable structure, wherein:

[0061] When selecting the material for the wearable structure, a combination of nickel alloy material and cotton cloth material is selected;

[0062] In the specific application of magnetic shielding, firstly, a nickel alloy material with a low magnetic shielding effect is wrapped on the outside of the signal acquisition equipment as a high conductivity shielding body, and a magnetic coating is coated on the outside of the nickel alloy to form an inefficient magnetic shielding. Then, on the basis of the inefficient magnetic shielding, an eddy current field is established based on the eddy current effect of the high conductivity shielding body. On the one hand, the conductor generates heat and attenuates the electromagnetic field. On the other hand, a magnetic field opposite to the original magnetic field is generated to offset part of the original magnetic field, thereby forming an efficient magnetic shielding. The comprehensive offset of magnetic shielding and efficient magnetic shielding can form a multi-level magnetic shielding, which can improve the magnetic shielding effect and ensure the accuracy of the signal acquisition equipment when collecting electromagnetic signals.

[0063] Nickel alloy is a common magnetic shielding material with good magnetic impedance and ductility. It can shield external magnetic field interference. At the same time, nickel alloy has good plasticity and can adapt to equipment of different shapes and sizes. The use of this high-efficiency magnetic shielding material can effectively reduce the impact of external magnetic fields on equipment or experiments. At the same time, combined with micro-magnetic shielding technology, it can reduce the impact of external magnetic fields on micro devices, and at the same time improve the adaptability to high requirements for magnetic field stability.

[0064] In this embodiment, if Figure 1 As shown, in the wearable device assembly module, when assembling the wearable device, the signal acquisition device is fixed to the inner surface of the wearable structure;

[0065] In the wearable device wearing module, when wearing the wearable device, the wearable device is fixed on the surface of the user's body, and at the same time, the signal acquisition device is aimed at the skin where the heart is located.

[0066] By controlling the fixed position of the signal acquisition device and adjusting the alignment position of the signal acquisition device, it is ensured that the signal acquisition device can better acquire the electrocardiogram and magnetic heart signals.

[0067] In this embodiment, if Figure 2 , Figure 3 and Figure 4 The wearable device includes two straps 1 with tightening buckles, the two straps 1 with tightening buckles are arranged in parallel, and battery compartments 2 are fixedly arranged at the two ends of the straps 1 with tightening buckles, a storage bag 3 is arranged between the two battery compartments 2, and an electrode sheet 4 with a wire is fixedly connected to one side of the battery compartment 2 and close to the straps 1 with tightening buckles.

[0068] In the entire wearable device, the strap with a tightening buckle 1, the battery compartment 2 and the storage bag 3 are all supported by magnetic shielding materials, wherein the metal part is made of nickel alloy material;

[0069] When performing ECG and MCG signal detection, the electrode sheet with the lead electrode sheet 4 is attached to the ECG monitoring position, and the MCG acquisition device box is placed inside the storage bag 3. Then, the storage bag 3 is adjusted to a suitable position on the chest, and the strap 1 with the tightening buckle is tightened. At this time, there is a tightening buckle in the middle of the strap 1 with the tightening buckle, and the tightness of the strap 1 with the tightening buckle can be adjusted according to the user's body shape. There is a buckle at the connection of the strap 1 with the tightening buckle, which can be conveniently put on quickly. In summary, the fixation of the entire wearable device can be achieved, and then the synchronous detection and real-time monitoring of the user's ECG and MCG signals can be achieved;

[0070] During the detection process, the ECG signal is collected by the electrode sheet, and the battery in the battery compartment 2 provides power support for the electrode sheet 4 with a wire, while the magnetocardiogram signal is collected by the magnetocardiogram collection device box. The collected ECG and magnetocardiogram signals are transmitted to the outside by the signal device hidden inside the battery compartment 2, which facilitates subsequent signal analysis.

[0071] Embodiment 2

[0072] Based on the above embodiment 1, further steps are performed.

[0073] See also Figure 2 , Figure 3 and Figure 4 A film 201 is attached to the battery compartment 2 and close to the side of the strap 1 with the tightening buckle;

[0074] A zipper-type bag opening 301 is fixedly provided at the top of the storage cloth bag 3 , and a plurality of square holes 302 are opened on the storage cloth bag 3 and on the side surface close to the binding belt 1 with the tightening buckle.

[0075] When in use, the film 201 can be used to stick closely to the skin, so that the heart magnetometry collection device box is as close as possible to the detection position. At the same time, the design of the zipper bag opening 301 can facilitate the opening and closing of the storage bag 3, and the square hole 302 can reduce the shielding of the heart magnetometry collection device box.

[0076] See also Figure 2 , Figure 3 and Figure 4 A hard sliding buckle 202 is fixedly provided on the side of the battery compartment 2.

[0077] A slide bar 303 is fixedly provided on the side of the storage cloth bag 3 , the hard slider 202 slides along the slide bar 303 , and a clamp 304 is clamped on the side of the slide bar 303 and close to the hard slider 202 .

[0078] When the clip 304 is released, the hard slider 202 can slide along the slide bar 303 to adjust the height of the storage bag 3, so as to solve the problem of inappropriate height of the storage bag 3 or discomfort caused by the user when wearing it. When the clip 304 is released, the position of the hard slider 202 can be fixed by clamping the clip 304 and the slide bar 303, thereby fixing the height of the storage bag 3 and improving the stability of the wearable device when in use.

[0079] Embodiment 3

[0080] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment systems, the present invention further discloses a characteristic fusion system of electrocardiogram and magnetic heart signals, including an acquisition module, the acquisition module is used to receive the signal sent from the above-mentioned electrocardiogram and magnetic heart signal acquisition magnetic shielding system, and also includes: a fusion module, an imaging module and a monitoring module;

[0081] The acquisition module is used to collect and record ECG and MCG signals: the signal terminal collects and records ECG and MCG signals from wearable devices;

[0082] The fusion module is used to load the feature fusion algorithm at the signal terminal, integrate the ECG and MCG signals and evaluate them;

[0083] The imaging module is used to present real-time three-dimensional electrocardiographic and magnetic cardiac imaging at the signal terminal based on imaging technology;

[0084] The monitoring module is used to monitor the ECG and MCG signals of the wearable device in real time and establish a signal connection between the user terminal and the signal terminal.

[0085] In this embodiment, if Figure 5 As shown, in the fusion module, when performing the feature fusion algorithm, the FPN algorithm is used for calculation.

[0086] The specific steps of integration are as follows:

[0087] The multi-level features of ECG and MCG signals are extracted through convolution operation. ECG is the first level feature of ECG signal, is the second level feature of ECG signal, is the nth level feature of ECG signal, P1 MCGis the first level feature of the magnetic cardiotonic signal, is the second level feature of the magnetic cardiotonic signal, It is the nth level feature of the magnetic cardiotonic signal.

[0088] From the highest level downward, upsample the features of each level to obtain and The upsampled high-level features are fused with the low-level features through pixel-by-pixel addition to obtain the electrocardiogram and magnetic heart features after multi-level feature fusion.

[0089]

[0090] Finally, the two are concatenated to obtain the fusion feature F i Fusion

[0091]

[0092] In the feature fusion algorithm, the features of these different layers can be fused to achieve the prediction effect, and the prediction is performed separately on each fused feature layer to improve the accuracy of the algorithm prediction.

[0093] In this embodiment, in the fusion module, evaluating the fused ECG and MCG signals includes:

[0094]

[0095] Among them, Q 心电(min) is the minimum value of the standard value range of the ECG signal, Q 心电检测值 is the ECG signal detection value, Q 心电(max) is the maximum value of the standard value range of the ECG signal, Q 心磁(min) is the minimum value of the standard value range of the magnetic cardiotonic signal, Q 心磁检测值 is the detection value of the magnetic cardiotonic signal, Q 心磁(max) It is the maximum value of the standard value range of the magnetic cardiotonic signal.

[0096] When Q 心电检测值 and Q 心磁检测值 When all the criteria are met at the same time, the output result is 0, and the heart is judged to be in a normal state. When the test results are in other situations, the heart is judged to be suspected of abnormality.

[0097] The embodiments of the present disclosure are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A magnetic shielding system for collecting electrocardiographic and magnetic cardiographic signals, characterized in that: The system comprises: a collection device selection module, a wearable structure selection module, a wearable device assembly module, a wearable device wearing module and a signal collection and transmission module; The acquisition device selection module is used to determine the user's current physical state and select the corresponding signal acquisition device; The wearable structure selection module is used to prepare a corresponding wearable structure using magnetic shielding technology to collect electrocardiogram and magnetic heart signals; The wearable device assembly module is used to perform assembly operations based on the selected signal acquisition device and the prepared wearable structure, and form a wearable device; The wearable device wearing module is used to adjust the tightness of the wearable device according to the body shape of the user, so as to wear the wearable device on the user's body; The signal acquisition and transmission module is used to use the wearable device to simultaneously detect the user's electrocardiogram signal and magnetocardiogram signal, and synchronously transmit the electrocardiogram signal and magnetocardiogram signal to the outside.

2. The system according to claim 1, characterized in that In the acquisition device selection module, the electrode sheet with a wire is selected to detect the electrocardiographic signal, and the magnetocardiographic acquisition device box is selected to detect the magnetocardiographic signal.

3. The system according to claim 1, characterized in that In the wearable structure selection module, the corresponding wearable structure is prepared by using magnetic shielding technology, and the collection of electrocardiogram and magnetic heart signals includes: When selecting the material for the wearable structure, a combination of nickel alloy material and cotton cloth material is selected; In the specific application of magnetic shielding, firstly, a nickel alloy material with low magnetic shielding effect is wrapped on the outside of the signal acquisition equipment as a high conductivity shielding body, and a magnetic coating is coated on the outside of the nickel alloy to form an inefficient magnetic shielding. Then, on the basis of the inefficient magnetic shielding, an eddy current field is established based on the eddy current effect of the high conductivity shielding body. On the one hand, the conductor generates heat and attenuates the electromagnetic field. On the other hand, a magnetic field opposite to the original magnetic field is generated to offset part of the original magnetic field to form an efficient magnetic shielding. The magnetic shielding and the efficient magnetic shielding are comprehensively offset to form a multi-level magnetic shielding.

4. The system according to claim 1, characterized in that In the wearable device assembly module, when assembling the wearable device, the signal acquisition device is fixed to the inner surface of the wearable structure; In the wearable device wearing module, when the wearable device is worn, the wearable device is fixed on the surface of the user's body, and at the same time, the signal acquisition device is aligned with the skin where the heart is located.

5. The system according to claim 1, characterized in that The wearable device comprises two straps with tightening buckles, the two straps with tightening buckles are arranged in parallel, and battery compartments are fixedly arranged at two ends of the straps with tightening buckles, a storage bag is arranged between the two battery compartments, and an electrode sheet with a wire is fixedly connected to one side of the battery compartment close to the straps with tightening buckles; A film is attached to the battery compartment and on the side close to the strap with the tightening buckle; A zipper-type bag opening is fixedly provided at the top of the storage cloth bag, and a plurality of square holes are opened on the side of the storage cloth bag near the side of the strap with the tightening buckle; A hard sliding buckle is fixedly provided on the side of the battery compartment; A sliding rod is fixedly arranged on the side of the storage cloth bag, the hard sliding buckle slides along the sliding rod, and a clamp is clamped on the side of the sliding rod near the hard sliding buckle.

6. A feature fusion system for electrocardiogram and magnetocardiogram signals, comprising an acquisition module, wherein the acquisition module is used to receive signals sent from the electrocardiogram and magnetocardiogram signal acquisition magnetic shielding system according to any one of claims 1 to 5, characterized in that: Also includes: Fusion module, imaging module and monitoring module; The fusion module is used to load the feature fusion algorithm at the signal terminal, integrate the ECG and MCG signals and perform evaluation; The imaging module is used to present real-time three-dimensional electrocardiographic and magnetic cardiographic imaging at the signal terminal based on imaging technology; The monitoring module is used to monitor the electrocardiogram and magnetic heart signals of the wearable device in real time, and to establish a signal connection between the user terminal and the signal terminal.

7. The system according to claim 6, characterized in that In the fusion module, when performing the feature fusion algorithm, the FPN algorithm is used for calculation.

8. The system according to claim 6, characterized in that In the fusion module, evaluating the fused ECG and MCG signals includes: Among them, Q 心电(min) is the minimum value of the standard value range of the ECG signal, Q 心电检测值 is the ECG signal detection value, Q 心电(max) is the maximum value of the standard value range of the ECG signal, Q 心磁(min) is the minimum value of the standard value range of the magnetic cardiotonic signal, Q 心磁检测值 is the detection value of the magnetic cardiotonic signal, Q 心磁(max) It is the maximum value of the standard value range of the magnetic cardiotonic signal.

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