Wireless power supply device for magnetic resonance equipment and magnetic resonance equipment

Abstract

The utility model belongs to the technical field of magnetic resonance equipment, and particularly relates to a wireless power supply device for magnetic resonance equipment and the magnetic resonance equipment. The photoelectric conversion unit is electrically connected with the power device and is integrally assembled with the power device; and the light energy supply unit is assembled to keep the photoelectric conversion unit always capable of receiving the light energy provided by the light energy supply unit so as to wirelessly supply power to the power device. The novel wireless power supply device provided by the utility model can solve the problem that the distance of a traditional wireless power supply mode in a magnetic field is limited, can also avoid the interference problem of a transmission frequency band and the magnetic field or nearby equipment, effectively prolongs the wireless transmission distance, can better adapt to magnetic resonance equipment, and has higher reliability.

Description

Technical Field

[0001] This utility model belongs to the field of magnetic resonance equipment technology, specifically relating to a wireless power supply device for magnetic resonance equipment and a magnetic resonance equipment. Background Technology

[0002] Currently, most magnetic resonance imaging (MRI) devices are wired powered. However, for components that need to be moved frequently, such as body coils, dragging long cables is very inconvenient. Furthermore, the movement of current-carrying wires in a magnetic field can generate induced magnetic fields, which can affect MRI imaging. Therefore, using wireless power supply would be beneficial for the practical application of MRI equipment.

[0003] However, most wireless power supply products on the market use electromagnetic induction or nuclear magnetic resonance technology for power supply. This power supply method not only has great limitations on distance, but also has problems such as inability to provide high power supply and low power supply efficiency. Moreover, in the medical system environment where magnetic resonance equipment is used, most wireless frequency bands have been occupied by other products. In order to avoid interference caused by conflicts with other wireless devices, the available energy frequency bands are greatly limited. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this application is to provide a wireless power supply device using photoelectric conversion technology and apply it to magnetic resonance imaging equipment. This device can not only solve the problem of wired power supply affecting magnetic resonance imaging, but also avoid the problem of interference caused by conflict with other wireless power supply devices, and further improve the wireless transmission distance.

[0005] To achieve the above and other related objectives, this utility model provides a wireless power supply device for a magnetic resonance imaging (MRI) device, comprising: a photoelectric conversion unit electrically connected to a power device in the MRI device; and a light energy supply unit configured to ensure that the photoelectric conversion unit can always receive light energy provided by the light energy supply unit, so as to wirelessly power the power device in the MRI device.

[0006] A magnetic resonance imaging device is also provided, comprising: at least one power device to be powered; a photoelectric conversion unit electrically connected to and integrally assembled with the power device; and a light energy supply unit configured to ensure that the photoelectric conversion unit can always receive light energy provided by the light energy supply unit to wirelessly power the power device.

[0007] According to a specific embodiment of the present invention, the light energy supply unit is further configured to adjust the direction of emitted light according to the position of the power device after the power device moves, so that the photoelectric conversion unit on the power device can receive the light energy provided by the light energy supply unit.

[0008] According to a specific embodiment of the present invention, it further includes: a bed, a scanning cavity, a control system, and a sensor for detecting the position change of the photoelectric conversion unit and transmitting the data to the control system; wherein, the control system is used to adjust the direction of the light emitted by the light supply unit according to the position of the light supply unit after it has moved.

[0009] According to a specific embodiment of the present invention, it further includes: a bed, a scanning cavity, and a control system; and the bed is equipped with a power supply device; wherein the control system is used to adjust the direction of the light emitted by the light energy supply unit according to the position of the bed after it has been moved.

[0010] According to a specific embodiment of the present invention, the light energy supply unit includes: a light source; an optical fiber, the input port of which is connected to the light-emitting part of the light source; and a lens group, the light inlet of which is correspondingly arranged to the output port of the optical fiber, and the light outlet of which is arranged facing the photoelectric conversion unit; wherein, the control system adjusts the direction of the emitted light of the light energy supply unit by adjusting the orientation of the light outlet of the lens group.

[0011] According to a specific embodiment of the present invention, the light energy supply unit further includes: a rotating component, which is fixedly arranged on one side of the scanning cavity port and electrically connected to the control system, so as to rotate a corresponding angle according to the command output by the control system; wherein, the lens group is mounted on the rotating component, and the control system drives the lens group to rotate through the rotating component to adjust the orientation of the light outlet of the lens group.

[0012] According to a specific embodiment of the present invention, the rotating assembly includes: a corner cylinder electrically connected to the control system, used to rotate a corresponding number of times according to the instructions output by the control system; a driving gear fixedly connected to the corner cylinder, so as to be driven to rotate by the corner cylinder; and a driven gear fixedly connected to the lens group, wherein the driven gear meshes with the driving gear; wherein, when the corner cylinder drives the driving gear to rotate, the driven gear drives the lens group to rotate, so as to adjust the orientation of the light outlet of the lens group.

[0013] According to a specific embodiment of the present invention, the optical energy supply unit includes at least two sets of optical fibers, lens groups, and rotating components; one set of rotating components is fixedly arranged at a port on one side of the scanning cavity, and the other set of rotating components is fixedly arranged at a port on the other side of the scanning cavity.

[0014] According to a specific embodiment of the present invention, the light source adopts near-infrared shortwave with a frequency band between 750nm and 800nm.

[0015] This invention provides a novel wireless power supply device that can solve the problem of limited distance in magnetic fields in traditional wireless power supply methods, and can also avoid interference between the transmission frequency band and magnetic fields or nearby devices, effectively extending the wireless transmission distance, better adapting to magnetic resonance equipment, and having higher reliability. Attached Figure Description

[0016] Figure 1 A schematic diagram of a specific embodiment of a magnetic resonance device provided by this utility model;

[0017] Figure 2 This is a schematic diagram of the photoelectric conversion efficiency of photovoltaic materials. Detailed Implementation

[0018] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0019] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0020] First, this embodiment provides a wireless power supply device that can be applied in various fields to wirelessly power electrical devices. In this embodiment, it is specifically used in a magnetic resonance imaging device.

[0021] Understandably, commonly used wireless power supply methods such as electromagnetic induction or nuclear magnetic resonance require specific wireless frequency bands, and their wireless transmission distance is also limited. Therefore, a photoelectric conversion wireless power supply method circumvents these problems. This method utilizes an artificial light source as the power transmitting unit and photovoltaic materials as the light absorption and conversion receiving unit. The light source emits light in a directional manner, illuminating the photovoltaic materials, which then convert the light into photoelectric energy, thus completing the wireless transmission of electrical energy.

[0022] In response, the wireless power supply device includes a photoelectric conversion unit and a light energy supply unit. The photoelectric conversion unit is electrically connected to the power device to be powered in the magnetic resonance equipment, while the light energy supply unit can be placed in any position, as long as the photoelectric conversion unit can always receive the light energy it provides, so as to wirelessly power the power device.

[0023] Secondly, please see Figure 1 As shown, a magnetic resonance imaging (MRI) device includes: a bed 10, a scanning cavity 20, a control system (not shown), and the aforementioned wireless power supply devices, namely a photoelectric conversion unit 30 and a light energy supply unit 40, as well as a power supply device to be powered. The bed 10 can be used to carry the object to be examined, such as a patient. The scanning cavity 20 has a built-in magnet that can provide a background magnetic field for MRI detection. In practical applications, this magnet can be a superconducting magnet to provide a high field strength and high uniformity background magnetic field. The photoelectric conversion unit 30 needs to be integrated with the power supply device so that the distance between the power input port of the photoelectric conversion unit 30 and the power input port of the power supply device is small enough. It can be understood that the photoelectric conversion unit 30 needs to be electrically connected to the power supply device to achieve power transmission. The electrical connection requires the use of a conductor. However, a current-carrying conductor will generate an induced magnetic field, which will affect MRI imaging. In this embodiment, the photoelectric conversion unit 30 can be connected to the power device to be powered via a terminal, that is, the power transmission port of the photoelectric conversion unit 30 is directly connected to the power supply port of the power device, so as to minimize the influence of the current-carrying conductor on magnetic resonance imaging. The light energy supply unit 40 can be set according to the location of the photoelectric conversion unit 30 so that there is no obstruction between the two, which facilitates the transmission of light energy.

[0024] It should be noted that the devices and / or apparatuses configured in the magnetic resonance imaging equipment include, but are not limited to, those described above. For example, a corresponding transmission mechanism needs to be provided between the bed 10 and the scanning cavity 20 so that the bed 10 can move relative to the scanning cavity 20, thereby allowing adjustment of the patient's detection position and realizing magnetic resonance imaging of different parts of the body. Modifications and refinements made by those skilled in the art to the embodiments of this utility model without departing from the spirit of this utility model still fall within the scope of the patent application of this utility model.

[0025] Furthermore, the photoelectric conversion unit 30 needs to be made of a material capable of photoelectric conversion, namely the aforementioned photovoltaic materials, such as monocrystalline silicon, polycrystalline silicon, and other materials. In a specific embodiment, perovskite is preferably used, and the reason for choosing perovskite is because its power conversion efficiency is relatively high. However, this is not intended to limit the materials applicable to the photoelectric conversion unit 30. The specific materials can be customized according to the actual situation. For example, the texture, hardness, and other factors of the material can be considered comprehensively. Modifications and refinements made by those skilled in the art to the embodiments of this utility model without departing from the spirit of this utility model still fall within the scope of the patent application of this utility model.

[0026] The light energy supply unit 40 includes at least: a light source 41, an optical fiber 42, and a lens group 43. The light source 41, as an electrical energy transmitting unit, provides basic energy output, namely, outputting light in a fixed frequency band for absorption by photovoltaic materials and conversion into electrical energy. The optical fiber 42, as a light transmission channel, guides the light to a designated location to illuminate the photoelectric conversion unit 30. Therefore, the input port of the optical fiber 42 needs to be connected to the light-emitting part of the light source 41 for light energy transmission. It is understandable that since light transmission within the optical fiber 42 is lossless, the wireless transmission distance is significantly extended. The wireless transmission distance can be increased by lengthening the optical fiber 42, and even customized by setting the length of the optical fiber 42 to meet actual needs, effectively avoiding the distance limitations of traditional wireless power supply methods. The lens group 43, as a direction adjustment unit for the emitted light from the light energy supply unit 40, refracts the light output from the output port of the optical fiber 42, thereby directing the light to the photoelectric conversion unit 30. Therefore, its light inlet is set to correspond to the output port of the optical fiber 42, and its light outlet is set to face the photoelectric conversion unit 30, so that the light emitted from the optical fiber 42 can illuminate the designated position after being refracted by the lens group 43.

[0027] It should be noted that when the position of the power device to be powered remains stationary, it is sufficient to fix the position of the lens group 43 and align the light outlet of the lens group 43 with the photoelectric conversion unit 30. In this way, the light from the light source 41, transmitted through the optical fiber 42, is refracted by the lens group 43 and illuminates the photoelectric conversion unit 30. Furthermore, when the position of the power device to be powered changes, the direction of the light emitted from the light outlet of the lens group 43 needs to be adjusted to change the direction of the light emitted from the light supply unit 40. That is, the orientation of the light outlet of the lens group 43 needs to be adjusted so that it moves synchronously with the power device, thus ensuring that the light outlet of the lens group 43 always faces the photoelectric conversion unit 30. Therefore, a control system is required to control the movement of the lens group 43 to adjust the orientation of its light outlet according to the position of the power device after its movement.

[0028] In this embodiment, an additional sensor is required and electrically connected to the control system to detect the position of the photoelectric conversion unit 30 and transmit it to the control system. This allows the control system to adjust the orientation of the light outlet of the lens group 43 according to the position of the photoelectric conversion unit 30 after it moves, thereby achieving directional adjustment of the light emitted from the light supply unit 40.

[0029] It should also be noted that the moving power device mentioned in this embodiment has a fixed direction and path of movement, meaning it always moves along a fixed path in a preset direction. For example, a power device might move from position A to position B and then to position C in a first direction, or from position C to position B and then to position A in a second direction. Therefore, the moving direction and path of the photoelectric conversion unit 30 are also fixed. When the sensor detects the movement of the photoelectric conversion unit 30, it can output a fixed command to the control system based on the position after the movement. For example, after the photoelectric conversion unit 30 moves to position A, the sensor can output a first command to the control system, or after the photoelectric conversion unit 30 moves to position B, the sensor can output a second command to the control system, and so on. It can also be understood that since the moving direction and path of the photoelectric conversion unit 30 are fixed, the angle of the light outlet of the lens group 43 that the control system needs to adjust after its movement is also fixed. For example, after the photoelectric conversion unit 30 moves from position A to position B, the light outlet of the lens group 43 only needs to be adjusted by a fixed angle to realign with the moved photoelectric conversion unit 30. Therefore, the required angle adjustment after different position changes can be preset so that the angle direction of the light outlet of the lens group 43 can be directly adjusted after the control system receives the corresponding instruction from the sensor, that is, the light outlet of the lens group 43 is kept facing the photoelectric conversion unit 30, without the need to perform complex data processing operations based on the data transmitted by the sensor, which also effectively saves the computing power consumption of the control system.

[0030] Furthermore, in order to adjust the orientation, i.e., the angular direction, of the light outlet of the lens group 43, the light supply unit 40 is additionally equipped with a rotating component 44 to assist in the adjustment. Specifically, the rotating component 44 can be fixedly arranged on one side of the port of the scanning cavity 20 and electrically connected to the control system, so as to rotate the corresponding angle according to the command output by the control system. The lens group 43 is mounted on the rotating component 44, and the control system drives the lens group 43 to rotate through the rotating component 44 to adjust the orientation of the light outlet of the lens group 43.

[0031] The rotating assembly 44 includes a driving gear, a driven gear, and a rotary cylinder. The driving gear is driven by the rotary cylinder and requires a fixed connection, but coaxial rotation is not restricted. The driven gear meshes with the driving gear and is driven to rotate along with it. The driven gear is also fixedly connected to the lens assembly 43, but coaxial rotation is not restricted, allowing it to rotate along with the lens assembly 43, thereby adjusting the angle and direction of the light outlet of the lens assembly 43. Therefore, when the rotary cylinder drives the driving gear to rotate, the driven gear follows the driving gear and rotates, driving the lens assembly to rotate as well, thus adjusting the direction of the light outlet of the lens assembly 43 and making the emitted light direction of the light supply unit 40 adjustable.

[0032] It should be noted that the gear in the rotating assembly 44 is driven by a rotary cylinder. The rotary cylinder needs to rotate the drive gear by a corresponding angle based on the position of the photoelectric conversion unit 30 after its movement, thereby adjusting the orientation of the light outlet of the lens group 43. Therefore, the rotary cylinder is electrically connected to the control system. Once set, the rotary cylinder can only rotate a fixed angle at a time. The number of rotations required by the rotary cylinder can be preset according to the angle of the light outlet of the lens group 43 to be adjusted at different positions of the photoelectric conversion unit 30. The rotary cylinder only needs to rotate a corresponding number of times according to the instructions output by the control system to complete the adjustment of the orientation of the light outlet of the lens group 43.

[0033] It should also be noted that the aforementioned rotating component 44 is made of non-magnetic gears to avoid interfering with the normal operation of the magnetic resonance equipment.

[0034] In one specific embodiment, the power supply device is a body coil 11 on the bed 10, used to cover the area of ​​the patient to be examined. During magnetic resonance imaging (MRI) of the patient, current is passed through the body coil 11 to generate a radio frequency magnetic field. Furthermore, since MRI examinations are required on different parts of the patient's body, the bed 10 will move accordingly, and the body coil 11 will also move along with the bed 10. Similarly, the photoelectric conversion unit 30, which is integrally assembled with the body coil 11, will also move synchronously with the bed 10.

[0035] It is understood that when the photoelectric conversion unit 30 is integrated with the body coil 11, it is at least partially exposed to the outside so as to receive light energy. It can also expose as much contact area as possible to the outside, thereby expanding the light energy receiving area. No further restrictions are imposed on this.

[0036] It is also understandable that, since the power supply device is the body coil 11 on the bed 10, the light energy supply unit 40 is preferably arranged on one side of the port of the scanning cavity 20, so that the light can better illuminate the photoelectric conversion unit 30. Specifically, the rotating component 44 can be directly installed on one side of the port of the scanning cavity 20. Since there is a certain space between the outer wall and the inner wall of the scanning cavity 20 for arranging magnets, it will have a certain thickness. In order to avoid the light emitted from the light outlet of the lens group 43 being blocked by this part, thus affecting the photoelectric conversion unit 30's reception of light energy, various different methods can be used to avoid this. For example, the rotating component 44 can be set closer to the inner wall of the scanning cavity 20, or the lens group 43 can be set inside the cavity of the scanning cavity 20, etc. There are no excessive restrictions on this, as long as it is ensured that the photoelectric conversion unit 30 can receive the light energy provided by the light energy supply unit 40. Modifications and refinements made by those skilled in the art to the embodiments of this utility model without departing from the spirit of this utility model still fall within the scope of the patent application of this utility model.

[0037] It should be noted that the above-mentioned arrangement near the port of the scanning cavity 20 only includes the lens group 43 and the rotating assembly 44. The light source 41 is an artificial light source that requires power to start. Therefore, the power supply device for the light source 41 or the light source 41 itself should preferably be arranged outside the magnetic field of the magnetic resonance equipment. The light energy is transmitted through an optical fiber 42 of appropriate length, that is, the light emitted by the light source 41 is transmitted to the lens group 43 on the scanning cavity 20 for refraction and then irradiates the photoelectric conversion unit 30, thereby avoiding the influence of current-carrying wires or other current-carrying conductors on magnetic resonance imaging.

[0038] Furthermore, photovoltaic materials absorb most of their wavelengths in the visible light region, while also exhibiting excellent conversion performance in the near-infrared short-wave range of 750nm-800nm. For details, please refer to [link to relevant documentation]. Figure 2 As shown. Therefore, in this embodiment, near-infrared shortwave wavelengths between 750nm and 800nm ​​are preferably used as the light source 41, and the corresponding optical fiber 42 also needs to use a corresponding infrared optical fiber.

[0039] Furthermore, the movement of the bed 10 is typically controlled by a control system. This control system can directly control the corner cylinder to perform the corresponding action based on the designated position of the bed 10. For example, if the bed 10 needs to move to: position one (for head detection), position two (for chest detection), and position three (for leg detection), then when the bed 10 moves to position one, the control system outputs a command one to the corner cylinder; when it moves to position two, it outputs a command two; and when it moves to position three, it outputs a command three. The corner cylinder can then rotate a corresponding number of times based on the received commands, thereby adjusting the orientation of the light outlet of the lens group 43. In this embodiment, no additional sensors are needed to assist in detecting the movement of the photoelectric conversion unit 30.

[0040] It is understandable that, since the position of the rotating assembly 44 is fixed and the lens group 43 is fixedly mounted on the rotating assembly 44, the angle that the light outlet of the lens group 43 needs to be adjusted is also fixed when the bed 10 moves to different positions. For example, if the angle cylinder can rotate 10 degrees at a time, and if the bed 10 needs to be adjusted by 30 degrees after moving to realign the light outlet of the lens group 43 with the photoelectric conversion unit 30, then the control system only needs to output a corresponding command to make the angle cylinder rotate 3 times.

[0041] Furthermore, based on the angle that needs to be adjusted at different positions of the bed 10, the radius of the driving gear and the driven gear, as well as the size ratio between the driving gear and the driven gear, can be freely adjusted. The number of rotations required by the corresponding angle cylinder will also be adjusted adaptively. No excessive restrictions are imposed on this. Modifications and refinements made by those skilled in the art to the embodiments of this utility model without departing from the spirit of this utility model still fall within the scope of the patent application of this utility model.

[0042] Furthermore, considering that the emitted light from the light supply unit 40 may still be obstructed, such as by the overall size difference between the bed 10 and the scanning cavity 20, or by other factors such as the obstruction of the scanning cavity 20's outer shell, lens groups 43 and rotating components 44 are provided on both sides of the scanning cavity 20 in this embodiment. This ensures that the photoelectric conversion unit 30 on the bed 10 can always receive light energy. Correspondingly, the light source 41 can be connected to the two lens groups 43 respectively through two optical fibers 42. Of course, two light sources 41 can also be provided. There are no major restrictions on this. Setting multiple sets of optical fibers 42, lens groups 43, and rotating components 44 allows the light supply unit 40 to provide multiple emitted lights, thereby illuminating the photoelectric conversion unit 30 from multiple different angles. This can maximize the protection of the photoelectric conversion unit 30's light energy reception. Modifications and refinements made by those skilled in the art to the embodiments of this utility model without departing from the spirit of this utility model still fall within the scope of this utility model's patent application.

[0043] It should be noted that the power devices in the magnetic resonance imaging (MRI) equipment include, but are not limited to, those described above. For example, they could be headphones on the bed 10 for patients lying flat to hear instructions during the MRI examination, or a display device mounted on the inner wall of the scanning cavity 20, etc. No further limitations are imposed on these. Correspondingly, since the photoelectric conversion unit 30 and the power supply unit are integrated, the position of the light energy supply unit 40 can be adaptively adjusted. No further details are imposed on this either. Modifications and refinements made by those skilled in the art to the embodiments of this utility model without departing from the spirit of this utility model still fall within the scope of this utility model's patent application.

[0044] Furthermore, the photoelectric conversion unit 30 can also be configured to store some electrical energy. For example, in dealing with some power devices that need to be kept powered and need to be moved, since the control system needs to adjust the direction of the emitted light from the light supply unit 40 according to the position of the photoelectric conversion unit 30 after it moves, the emitted light from the light supply unit 40 cannot follow the photoelectric conversion unit 30 in real time. In order to keep the power device powered, the photoelectric conversion unit 30 can be configured as described above. In this way, even if the power device moves the photoelectric conversion unit 30 together, and the light supply unit 40 does not adjust the direction of the emitted light in time, the photoelectric conversion unit 30 can ensure that the power device is powered for a short period of time, giving the light supply unit 40 sufficient time to adjust. Alternatively, based on the body coil 11 in the above embodiment, it may only need to be energized when the detection begins. However, the detection usually starts after the bed 10 moves, rather than during the movement of the bed 10. Therefore, the body coil 11 does not need to be kept powered continuously. Therefore, the specific implementation can be freely adjusted according to actual conditions and needs, and there are no restrictions on this. Modifications and refinements made by those skilled in the art to the embodiments of this utility model without departing from the spirit of this utility model still fall within the scope of the patent application of this utility model.

[0045] In summary, this utility model provides a novel wireless power supply device that can solve the problem of limited distance in magnetic fields in traditional wireless power supply methods, and can also avoid interference between the transmission frequency band and magnetic fields or nearby devices, effectively extending the wireless transmission distance, better adapting to magnetic resonance equipment, and having higher reliability.

[0046] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0047] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0048] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0049] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0050] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

[0051] As used herein and throughout the claims below, unless otherwise specified, “a” and “the” include the plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, “in” means “in” and “on”.

[0052] The above description of the embodiments shown in this utility model (including the content set forth in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments described herein, and such modifications will be within the spirit and scope of the utility model.

[0053] This document has generally described the systems and methods in detail to aid in understanding the present invention. Furthermore, various specific details have been set forth to provide a general understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more specific details, or using other devices, systems, accessories, methods, components, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0054] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A wireless power supply device for a magnetic resonance imaging (MRI) device, characterized in that, include: The photoelectric conversion unit is electrically connected to the power supply in the magnetic resonance equipment; A light energy supply unit is configured to ensure that the photoelectric conversion unit is always able to receive light energy provided by the light energy supply unit in order to wirelessly power the electrical devices in the magnetic resonance device. The light energy supply unit is also configured to adjust the direction of emitted light according to the new position of the power device when the position of the power device is moved, so that the photoelectric conversion unit on the power device can receive the light energy provided by the light energy supply unit.

2. A magnetic resonance imaging (MRI) device, characterized in that, include: At least one electrical device to be powered; The photoelectric conversion unit is electrically connected to the power device and is integrally assembled with the power device; A light energy supply unit is configured to ensure that the photoelectric conversion unit can always receive light energy provided by the light energy supply unit in order to wirelessly power the electrical device. The light energy supply unit is also configured to adjust the direction of emitted light according to the new position of the power device when the position of the power device is moved, so that the photoelectric conversion unit on the power device can receive the light energy provided by the light energy supply unit.

3. The magnetic resonance device according to claim 2, characterized in that, Also includes: Bed, scanning cavity, control system, and A sensor is used to detect the position changes of the photoelectric conversion unit and transmit the data to the control system; The control system is used to adjust the direction of the light emitted by the light supply unit according to the position of the light supply unit after it has been moved.

4. The magnetic resonance device according to claim 2, characterized in that, Also includes: The bed, scanning cavity, and control system are provided; and the bed is equipped with a power supply device. The control system is used to adjust the direction of the light emitted by the light energy supply unit according to the position of the bed after it has been moved.

5. The magnetic resonance apparatus according to claim 3 or 4, characterized in that, The light energy supply unit includes: light source; The optical fiber has its input port connected to the light-emitting part of the light source; The lens assembly has its light inlet corresponding to the output port of the optical fiber, and its light outlet facing the photoelectric conversion unit. The control system adjusts the direction of the emitted light from the light supply unit by adjusting the orientation of the light outlet of the lens group.

6. The magnetic resonance device according to claim 5, characterized in that, The light energy supply unit also includes: A rotating assembly is fixedly arranged on one side of the scanning cavity port and electrically connected to the control system to rotate a corresponding angle according to the command output by the control system. The lens group is mounted on the rotating assembly, and the control system drives the lens group to rotate through the rotating assembly to adjust the orientation of the light outlet of the lens group.

7. The magnetic resonance device according to claim 6, characterized in that, The rotating assembly includes: An angle cylinder, electrically connected to the control system, is used to rotate a corresponding number of times according to the instructions output by the control system. The drive gear is fixedly connected to the rotary cylinder so that it can be driven to rotate by the rotary cylinder; The driven gear is fixedly connected to the lens assembly, and the driven gear meshes with the driving gear; When the rotary cylinder drives the drive gear to rotate, the driven gear drives the lens group to rotate, thereby adjusting the orientation of the light outlet of the lens group.

8. The magnetic resonance device according to claim 6, characterized in that, The optical energy supply unit includes at least two sets of optical fibers, a lens group, and a rotating assembly; One set of rotating components is fixedly arranged at the port on one side of the scanning cavity, and the other set of rotating components is fixedly arranged at the port on the other side of the scanning cavity.

9. The magnetic resonance apparatus according to claim 5, characterized in that, The light source uses near-infrared shortwave with a frequency band between 750nm and 800nm.

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