Signal acquisition equipment

Abstract

The invention relates to a signal acquisition device. The signal acquisition equipment comprises a signal processor, a signal acquisition device, a lead wire and an electric connecting wire; the signal collector is connected with the signal processor through the lead wire so as to transmit physiological signals collected by the signal collector to the signal processor; the electric connecting wire is electrically connected with the signal collector, the electric connecting wire can form a closed circuit, the closed circuit is connected with a power supply circuit of the signal processor, and the closed circuit can generate induced current under excitation of a radio frequency field emitted by the magnetic resonance imaging equipment. And power is supplied to the signal processor through the induction current. By adopting the signal acquisition equipment, the problem that the use state of electrocardiograph monitoring equipment is limited by the residual electric quantity of the rechargeable battery can be avoided.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic technology, and in particular to a signal acquisition device. Background Art

[0002] Magnetic resonance imaging equipment can generate a series of images of patients using magnetic fields, magnetic field gradients, and radio waves. In order to ensure the safety of patients during MRI scans, it is necessary to obtain the patient's ECG monitoring parameters using ECG monitoring equipment while performing MRI scans on the patient.

[0003] In conventional technology, the ECG monitoring device used in the magnetic resonance imaging device is mainly powered by a rechargeable battery. Therefore, the use status of the ECG monitoring device is limited by the remaining power of the rechargeable battery. Summary of the invention

[0004] Based on this, it is necessary to provide a signal acquisition device that can avoid the use status of the electrocardiogram monitoring device being limited by the remaining power of the rechargeable battery in order to solve the above technical problems.

[0005] The present application provides a signal acquisition device, the signal acquisition device comprising: a signal processor, a signal collector, a lead wire and an electrical connection wire;

[0006] The signal collector is connected to the signal processor via the lead wire to transmit the physiological signal collected by the signal collector to the signal processor;

[0007] The electrical connection line is electrically connected to the signal collector, and the electrical connection line can form a closed circuit. The closed circuit is connected to the power supply circuit of the signal processor. The closed circuit can generate an induced current under the excitation of the radio frequency field emitted by the magnetic resonance imaging device, so as to power the signal processor through the induced current.

[0008] In one embodiment, the electrical connection line and the signal collector together form the closed circuit.

[0009] In one embodiment, the signal collector includes a first signal collector, a second signal collector and a third signal collector; the electrical connection line includes a first electrical connection line, a second electrical connection line and a third electrical connection line; the first electrical connection line is respectively connected to the first signal collector and the second signal collector, the second electrical connection line is respectively connected to the first signal collector and the third signal collector, and the third electrical connection line is respectively connected to the second signal collector and the third signal collector.

[0010] In one embodiment, the electrical connection line, the signal collector and the signal processor together form the closed circuit.

[0011] In one embodiment, the signal collector includes a first signal collector, a second signal collector and a third signal collector; the electrical connection line includes a first electrical connection line, a second electrical connection line, a third electrical connection line and a fourth electrical connection line; the first electrical connection line is respectively connected to the signal processor and the first signal collector, the second electrical connection line is respectively connected to the first signal collector and the second signal collector, the third electrical connection line is respectively connected to the second signal collector and the third signal collector, and the fourth electrical connection line is respectively connected to the third signal collector and the signal processor.

[0012] In one embodiment, the signal collector includes a first signal collector and a second signal collector; the electrical connection line includes a first electrical connection line, a second electrical connection line and a third electrical connection line; the first electrical connection line is respectively connected to the signal processor and the first signal collector, the second electrical connection line is respectively connected to the first signal collector and the second signal collector, and the third electrical connection line is respectively connected to the second signal collector and the signal processor.

[0013] In one embodiment, the signal acquisition device further includes a conversion circuit, and the conversion circuit is connected to the closed circuit and the power supply circuit respectively;

[0014] The conversion circuit is used to convert the induced current from alternating current to direct current, so as to power the signal processor through the direct current.

[0015] In one embodiment, the conversion circuit includes a rectifier circuit and a buffer circuit, the rectifier circuit is connected to the closed circuit and the buffer circuit respectively, and the buffer circuit is also connected to the power supply circuit;

[0016] The rectifier circuit is used to convert the alternating current into the direct current;

[0017] The buffer circuit is used to buffer the direct current and use the buffered direct current to power the signal processor.

[0018] In one embodiment, the signal acquisition device further includes an acquisition circuit box, the acquisition circuit box is respectively connected to the closed circuit and the signal processor, and the conversion circuit is arranged in the acquisition circuit box.

[0019] In one of the embodiments, the signal processor is used to process the physiological signal; the physiological signal includes any one of an electrocardiogram signal, an electroencephalogram signal, and a blood oxygen signal.

[0020] The above-mentioned signal acquisition device includes a signal processor, a signal collector, a lead wire and an electrical connection wire. The signal collector is connected to the signal processor through the lead wire and can transmit the physiological signals collected by the signal collector to the signal processor. The electrical connection wire is electrically connected to the signal collector. The electrical connection wire can form a closed circuit. The formed closed circuit is connected to the power supply circuit of the signal processor. The closed circuit can generate an induced current under the excitation of the radio frequency field emitted by the magnetic resonance imaging device to power the signal processor through the induced current, so that the signal processor can be charged while in use, thereby extending the continuous use time of the signal processor, avoiding the defect that the use status of the signal processor is limited by the remaining power of the rechargeable battery, and reducing the operating burden of the signal processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a signal acquisition device in one embodiment;

[0023] Figure 2 It is a structural schematic diagram of a signal acquisition device in another embodiment;

[0024] Figure 3 It is a structural schematic diagram of a signal acquisition device in another embodiment;

[0025] Figure 4 It is a structural schematic diagram of a signal acquisition device in another embodiment;

[0026] Figure 5 It is a structural schematic diagram of a signal acquisition device in another embodiment;

[0027] Description of reference numerals:

[0028] 01: signal acquisition equipment; 10: signal processor;

[0029] 20: signal collector; 201: first signal collector;

[0030] 202: second signal collector; 203: third signal collector;

[0031] 30: lead wire; 40: electrical connection wire;

[0032] 401: a first electrical connection line; 402: a second electrical connection line;

[0033] 403: third electrical connection line; 404: fourth electrical connection line; 50: conversion circuit. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be fixed connection, detachable connection, or integrated; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In the present invention, unless otherwise clearly defined and limited, the first feature "on" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. It should be noted that when an element is referred to as "fixed on" or "set on" another element, it can be directly on the other element or there can be an element in the middle. When an element is considered to be "connected" to another element, it may be directly connected to another element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0037] In one embodiment, Figure 1 As shown, a signal acquisition device 01 is provided, and the signal acquisition device 01 includes a signal processor 10, a signal collector 20, a lead wire 30 and an electrical connection wire 40; the signal collector 20 is connected to the signal processor 10 through the lead wire 30 to transmit the physiological signal collected by the signal collector 20 to the signal processor 10; the electrical connection wire 40 is electrically connected to the signal collector 20, and the electrical connection wire 40 can form a closed circuit, which is connected to the power supply circuit of the signal processor 10. The closed circuit can generate an induced current under the excitation of the radio frequency field emitted by the magnetic resonance imaging device, so as to power the signal processor 10 through the induced current.

[0038] First, it should be noted that the signal acquisition device 01 in the embodiment of the present application can be used in the human body to measure the physiological signals of the human body while the human body is subjected to magnetic resonance scanning, so as to monitor the physiological signals of the human body in the process of magnetic resonance scanning in real time. Among them, the signal collector 20 is attached to the surface of the human body when in use, and the signal collector 20 is connected to the signal processor 10 through the lead wire 30. The signal collector 20 transmits the collected physiological signals to the signal processor 10 through the lead wire 30, and the collected physiological signals are processed by the signal processor 10. Optionally, the physiological signals in the embodiment of the present application may include any one of an electrocardiogram signal, an electroencephalogram signal, and a blood oxygen signal. That is to say, as an optional embodiment, the signal processor 10 in the embodiment of the present application may be any one of an electrocardiograph, an electroencephalogram, and an oximeter. Optionally, the signal collector 20 in the present embodiment may include one or more, and each signal collector may be connected to the signal processor 10 through a lead wire. Optionally, the signal collector 20 in this embodiment may include an electrode sheet, a light collection sensor terminal, etc. For example, when the signal processor 10 is an electrocardiograph and / or an electroencephalogram, the signal collector 20 may be an electrode sheet; when the signal processor 10 is a blood oximeter, the signal collector 20 may be a light collection sensor terminal.

[0039] It can be understood that during the magnetic resonance scanning process, a strong electromagnetic field will be pulsed out from the large hole of the magnetic resonance imaging device, which is commonly known as the B1 field. The rotating magnetic field generated by the B1 field is perpendicular to the B0 field direction of the magnetic resonance imaging device. The B1 field will produce a large magnetic flux change in a plane parallel to the B0 field direction. In this embodiment, when the signal acquisition device 01 is used, the signal collector is attached to the surface of the human skin and is basically in a horizontal plane when the human body lies flat for magnetic resonance scanning. Any number of signal collectors 20 are taken as vertices, and the small area enclosed by them is approximately a horizontal plane. This horizontal plane parallel to the B0 field direction is just a favorable position for obtaining the maximum magnetic flux change of the nuclear magnetic resonance B1 field. Based on this, in this embodiment, the electrical connection line 40 is electrically connected to the above-mentioned signal collector 20 so that the electrical connection line 40 forms a closed circuit. Under the excitation of the radio frequency field emitted by the magnetic resonance imaging device, the magnetic flux passing through the closed circuit changes, and the closed circuit can generate an induced current. Further, the signal processor 10 can be powered by the induced current generated by the closed circuit. In this way, when the signal acquisition device 01 is used on a human body undergoing an magnetic resonance scan, the pulsed radio frequency field generated during the magnetic resonance scan can be used to stimulate the closed circuit to generate an induced current to power the signal processor, thereby reducing the operation of maintaining the power of the signal acquisition device 01 itself, and also reducing the burden of managing the rechargeable battery of the signal acquisition device 01.

[0040] Optionally, in the present embodiment, the closed circuit formed by the electrical connection line 40 may be a closed circuit formed by one turn of the electrical connection line, or may be a closed circuit formed by multiple turns of the electrical connection line. It is understandable that, since the signal collector 20 is attached to the surface of the human body, the diameter of the closed circuit formed by the electrical connection line 40 connected to the signal collector 20 is roughly horizontal. Optionally, in the present embodiment, the electrical connection line 40 may be electrically connected to at least two signal collectors 20 to form a closed circuit. For example, the number of signal collectors 20 may be 2, 3, 4, etc., and the electrical connection line 40 that the signal collector 20 can cooperate with may form a closed circuit. Optionally, in the present embodiment, the closed circuit formed by the electrical connection line 40 may be connected to the power supply circuit of the signal processor 10 at the closed position through a cable.

[0041] The above-mentioned signal acquisition device includes a signal processor, a signal collector, a lead wire and an electrical connection wire. The signal collector is connected to the signal processor through the lead wire and can transmit the physiological signals collected by the signal collector to the signal processor. The electrical connection wire is electrically connected to the signal collector. The electrical connection wire can form a closed circuit. The formed closed circuit is connected to the power supply circuit of the signal processor. The closed circuit can generate an induced current under the excitation of the radio frequency field emitted by the magnetic resonance imaging device to power the signal processor through the induced current, so that the signal processor can be charged while in use, thereby extending the continuous use time of the signal processor, avoiding the defect that the use status of the signal processor is limited by the remaining power of the rechargeable battery, and reducing the operating burden of the signal processor.

[0042] In some scenarios, the electrical connection line 40 can form the above-mentioned closed circuit together with the signal collector 20, or the electrical connection line 40 can also form the above-mentioned closed circuit together with the signal collector 20 and the signal processor 10. Two specific implementation methods of forming a closed circuit will be explained below.

[0043] The first one: In one embodiment, the electrical connection line 40 and the signal collector 20 together form a closed circuit.

[0044] In this embodiment, the electrical connection line 40 can be arranged around the signal collector 20, and a closed circuit is formed by the electrical connection line 40 and the signal collector 20. As an optional implementation, in this embodiment, if Figure 2As shown, the signal collector 20 may include a first signal collector 201, a second signal collector 202 and a third signal collector 203; the electrical connection line 40 may include a first electrical connection line 401, a second electrical connection line 402 and a third electrical connection line 403, the first electrical connection line 401 is respectively connected to the first signal collector 201 and the second signal collector 202, the second electrical connection line 402 is respectively connected to the first signal collector 201 and the third signal collector 203, the third electrical connection line 403 is respectively connected to the second signal collector 202 and the third signal collector 203, and a closed circuit is formed by the electrical connection line 40 and the signal collector 20. Optionally, as Figure 2 As shown in the example, in this embodiment, a closing point can be formed at the second signal collector 202, and the electrical connection line can be closed at the second signal collector 202. In addition, it should be noted that the first electrical connection line 401, the second electrical connection line 402 and the third electrical connection line 403 can all be Figure 2 The multiple turns of electrical connection wires shown in the example, or they can all be one turn of electrical connection wires, Figure 2 is just an example.

[0045] In this embodiment, the signal collector includes a first signal collector, a second signal collector and a third signal collector, and the electrical connecting wire includes a first electrical connecting wire, a second electrical connecting wire and a third electrical connecting wire. The first electrical connecting wire is connected to the first signal collector and the second signal collector respectively, the second electrical connecting wire is connected to the first signal collector and the third signal collector respectively, and the third electrical connecting wire is connected to the second signal collector and the third signal collector respectively. The implementation method of forming a closed circuit is relatively simple and easy to operate, ensuring the feasibility of forming a closed circuit through the electrical connecting wires and the signal collectors.

[0046] Second: In one embodiment, the electrical connection line 40 , the signal collector 20 and the signal processor 10 together form a closed circuit.

[0047] In this embodiment, the implementation method of the electrical connection line 40, the signal collector 20 and the signal processor 10 forming a closed circuit together will be explained.

[0048] Embodiment 1: In this embodiment, as Figure 3As shown, the signal collector 20 includes a first signal collector 201, a second signal collector 202 and a third signal collector 203; the electrical connection line 40 includes a first electrical connection line 401, a second electrical connection line 402, a third electrical connection line 403 and a fourth electrical connection line 404; the first electrical connection line 401 is respectively connected to the signal processor 10 and the first signal collector 201, the second electrical connection line 402 is respectively connected to the first signal collector 201 and the second signal collector 202, the third electrical connection line 403 is respectively connected to the second signal collector 202 and the third signal collector 203, and the fourth electrical connection line 404 is respectively connected to the third signal collector 203 and the signal processor 10, so that the electrical connection line 40, the signal collector 20 and the signal processor 10 form a closed circuit together. In addition, it should be noted that the first electrical connection line 401, the second electrical connection line 402, the third electrical connection line 403 and the fourth electrical connection line 404 in this embodiment can all be Figure 3 The one-turn electrical connection wire shown in the example, or multiple-turn electrical connection wires, Figure 3 is just an example.

[0049] In this embodiment, the signal collector includes a first signal collector, a second signal collector and a third signal collector, and the electrical connection line includes a first electrical connection line, a second electrical connection line, a third electrical connection line and a fourth electrical connection line. The first electrical connection line is respectively connected to the signal processor and the first signal collector, the second electrical connection line is respectively connected to the first signal collector and the second signal collector, the third electrical connection line is respectively connected to the second signal collector and the third signal collector, and the fourth electrical connection line is respectively connected to the third signal collector and the signal processor. A closed circuit is formed by the first signal collector, the second signal collector, the third signal collector, the signal processor, the first electrical connection line, the second electrical connection line, the third electrical connection line and the fourth electrical connection line, so that the implementation method of the closed circuit is more diversified.

[0050] Embodiment 2: In this embodiment, if Figure 4 As shown, the signal collector 20 includes a first signal collector 201 and a second signal collector 202; the electrical connection line 40 includes a first electrical connection line 401, a second electrical connection line 402 and a third electrical connection line 403; the first electrical connection line 401 is connected to the signal processor 10 and the first signal collector 201 respectively, the second electrical connection line 402 is connected to the first signal collector 201 and the second signal collector 202 respectively, and the third electrical connection line 403 is connected to the second signal collector 202 and the signal processor 10 respectively, so that the electrical connection line 40, the signal collector 20 and the signal processor 10 form a closed circuit together. In addition, it should be noted that the first electrical connection line 401, the second electrical connection line 402 and the third electrical connection line 403 in this embodiment can all be Figure 4The one-turn electrical connection wire shown in the example, or multiple-turn electrical connection wires, Figure 4 is just an example.

[0051] In this embodiment, the signal collector includes a first signal collector and a second signal collector, and the electrical connecting wire includes a first electrical connecting wire, a second electrical connecting wire and a third electrical connecting wire. The first electrical connecting wire is respectively connected to the signal processor and the first signal collector, the second electrical connecting wire is respectively connected to the first signal collector and the second signal collector, and the third electrical connecting wire is respectively connected to the second signal collector and the signal processor. In this way, when a closed circuit is formed by the signal collector, the electrical connecting wire and the signal processor, the number of signal collectors used can be reduced as much as possible, so that the implementation method of the closed circuit is simplified.

[0052] Since the induced current generated by the closed circuit under the excitation of the radio frequency field emitted by the magnetic resonance imaging device is alternating current, the generated alternating current can be converted into direct current and then the signal processor can be powered by the converted direct current. Figure 5 As shown, the above-mentioned signal acquisition device 01 also includes a conversion circuit 50, which is respectively connected to the above-mentioned closed circuit and the power supply circuit; the conversion circuit 50 is used to convert the induced current from alternating current to direct current, so as to power the signal processor 10 through direct current.

[0053] In this embodiment, the conversion circuit 50 can rectify the induced current, convert the induced current from AC to DC, and use the converted DC to power the signal processor 10. In this embodiment, as an optional implementation, the conversion circuit 50 may include a rectifier circuit and a buffer circuit, the rectifier circuit is connected to the above-mentioned closed circuit and the buffer circuit respectively, the buffer circuit is also connected to the power supply circuit, and the rectifier circuit can convert the AC generated by the closed circuit into DC. Since the magnetic resonance imaging device emits a radio frequency field in a pulsed manner, the AC generated by the closed circuit is also a pulsed AC, and after conversion, the obtained DC is also a pulsed DC. Therefore, the converted DC can be buffered by the buffer circuit, and the buffered DC can be used to power the signal processor 10. Optionally, in this embodiment, the buffer circuit may include a capacitor group, and the DC can be buffered by the capacitor group. Optionally, in this embodiment, the conversion circuit may further include a ballast circuit, which is respectively connected to the closed circuit and the rectifier circuit. The ballast circuit can minimize interference with the magnetic resonance image, losslessly suppress the magnitude of the current in the closed circuit when the magnetic resonance imaging device transmits a radio frequency field, and without losing the induced electrical power output.

[0054] In this embodiment, as another optional implementation, the above-mentioned signal acquisition device 01 can also include an acquisition circuit box, which is respectively connected to the above-mentioned closed circuit and the signal processor 10. The conversion circuit 50 can be arranged in the acquisition circuit box, and the conversion circuit can be protected by the acquisition circuit box.

[0055] In this embodiment, the signal acquisition device also includes a conversion circuit, which is respectively connected to the closed circuit and the power supply circuit. The conversion circuit can convert the induced current generated by the closed circuit from alternating current to direct current, provide a charging power supply for powering the signal processor, and ensure the feasibility of using the induced current generated by the closed circuit to power the signal processor.

[0056] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0057] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A signal acquisition device, characterized in that: The signal acquisition device comprises: a signal processor, a signal collector, a lead wire and an electrical connection wire; The signal collector is connected to the signal processor via the lead wire to transmit the physiological signal collected by the signal collector to the signal processor; The electrical connection line is electrically connected to the signal collector, and the electrical connection line can form a closed circuit. The closed circuit is connected to the power supply circuit of the signal processor. The closed circuit can generate an induced current under the excitation of the radio frequency field emitted by the magnetic resonance imaging device, so as to power the signal processor through the induced current.

2. The signal acquisition device according to claim 1, characterized in that: The electrical connection line and the signal collector together form the closed circuit.

3. The signal acquisition device according to claim 2, characterized in that: The signal collector includes a first signal collector, a second signal collector and a third signal collector; the electrical connection line includes a first electrical connection line, a second electrical connection line and a third electrical connection line; the first electrical connection line is connected to the first signal collector and the second signal collector respectively, the second electrical connection line is connected to the first signal collector and the third signal collector respectively, and the third electrical connection line is connected to the second signal collector and the third signal collector respectively.

4. The signal acquisition device according to claim 1, characterized in that: The electrical connection line, the signal collector and the signal processor together form the closed circuit.

5. The signal acquisition device according to claim 4, characterized in that: The signal collector includes a first signal collector, a second signal collector and a third signal collector; the electrical connection line includes a first electrical connection line, a second electrical connection line, a third electrical connection line and a fourth electrical connection line; the first electrical connection line is respectively connected to the signal processor and the first signal collector, the second electrical connection line is respectively connected to the first signal collector and the second signal collector, the third electrical connection line is respectively connected to the second signal collector and the third signal collector, and the fourth electrical connection line is respectively connected to the third signal collector and the signal processor.

6. The signal acquisition device according to claim 4, characterized in that: The signal collector includes a first signal collector and a second signal collector; the electrical connection line includes a first electrical connection line, a second electrical connection line and a third electrical connection line; the first electrical connection line is respectively connected to the signal processor and the first signal collector, the second electrical connection line is respectively connected to the first signal collector and the second signal collector, and the third electrical connection line is respectively connected to the second signal collector and the signal processor.

7. The signal acquisition device according to any one of claims 1 to 6, characterized in that: The signal acquisition device further comprises a conversion circuit, and the conversion circuit is respectively connected to the closed circuit and the power supply circuit; The conversion circuit is used to convert the induced current from alternating current to direct current, so as to power the signal processor through the direct current.

8. The signal acquisition device according to claim 7, characterized in that: The conversion circuit includes a rectifier circuit and a buffer circuit, the rectifier circuit is connected to the closed circuit and the buffer circuit respectively, and the buffer circuit is also connected to the power supply circuit; The rectifier circuit is used to convert the alternating current into the direct current; The buffer circuit is used to buffer the direct current and use the buffered direct current to power the signal processor.

9. The signal acquisition device according to claim 7, characterized in that: The signal acquisition device further comprises an acquisition circuit box, which is connected to the closed circuit and the signal processor respectively, and the conversion circuit is arranged in the acquisition circuit box.

10. The signal acquisition device according to any one of claims 1 to 6, characterized in that: The signal processor is used to process the physiological signal; the physiological signal includes any one of an electrocardiogram signal, an electroencephalogram signal, and a blood oxygen signal.

Images