Non-contact coupling transmission circuit and medical imaging equipment

Abstract

The utility model belongs to the technical field of medical equipment, and provides a non-contact coupling transmission circuit and medical imaging equipment, a fixed-side power supply end is connected to a fixed-side electric energy coil through a fixed-side electric energy conversion circuit, and a rotor-side load end is connected to a rotor-side electric energy coil through a rotor-side electric energy conversion circuit. The fixed-side communication circuit and the rotor-side communication circuit are respectively connected with the fixed-side electric energy coil and the rotor-side electric energy coil, the fixed-side communication circuit couples a fixed-side communication signal to the fixed-side electric energy coil, and the rotor-side communication circuit extracts a communication signal in the rotor-side electric energy coil. Or the rotor-side communication circuit couples the rotor-side communication signal to the rotor-side electric energy coil, and the fixed-side communication circuit extracts the communication signal in the fixed-side electric energy coil, so that the transmission of the electric energy and the communication signal between the fixed-side electric energy coil and the rotor-side electric energy coil is realized, the equipment is simplified on the basis of ensuring the communication requirement, and the cost is reduced. The cost is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical equipment, and particularly relates to a non-contact coupling transmission circuit and a medical imaging device. BACKGROUND

[0002] Computed Tomography (CT) is a medical imaging technology. It uses X-ray beams to perform tomographic scanning on the human body and produces detailed images of the internal structure of the body with the help of a computer. CT scanning is widely used in the diagnosis of various diseases due to its fast and clear imaging capability. Medical CT needs to transmit electrical energy from the fixed side to the rotor side and realize data communication between the fixed side and the rotor side.

[0003] In related technologies, a slip ring is usually used to realize electrical connection between the fixed side and the rotor side. Since the slip ring realizes transmission of electrical energy and signals by friction contact between two conductor elements, it limits the rotation speed of the rotor and the power of the transmitted electrical energy, and it is difficult to improve the rate of signal transmission. UTILITY MODEL CONTENT

[0004] The purpose of the present application is to provide a non-contact coupling transmission circuit and a medical imaging device, aiming to provide a non-contact electrical energy transmission method for realizing power supply and communication transmission between the fixed side and the rotor side of a CT gantry, and simplifying the equipment and reducing the cost on the basis of ensuring communication needs.

[0005] The first aspect of the embodiment of the present application provides a non-contact coupling transmission circuit, which comprises a fixed side power supply end, a fixed side electrical energy conversion circuit, a non-contact coupling circuit, a rotor side electrical energy conversion circuit, a rotor side load end, a fixed side communication circuit and a rotor side communication circuit.

[0006] The non-contact coupling circuit at least comprises a fixed side electrical energy coil and a rotor side electrical energy coil, the fixed side electrical energy coil is arranged opposite to the rotor side electrical energy coil to realize transmission of electrical energy and communication signals between the coils.

[0007] The fixed side power supply end is connected to the fixed side electrical energy coil through the fixed side electrical energy conversion circuit, and the rotor side load end is connected to the rotor side electrical energy coil through the rotor side electrical energy conversion circuit.

[0008] The fixed side communication circuit and the rotor side communication circuit are respectively connected to the fixed side electrical energy coil and the rotor side electrical energy coil.

[0009] The fixed side communication circuit couples the fixed side communication signal to the fixed side electrical energy coil, and the rotor side communication circuit extracts the communication signal in the rotor side electrical energy coil; or

[0010] The rotor-side communication circuit couples a rotor-side communication signal to the rotor-side power coil, and the fixed-side communication circuit extracts a communication signal in the fixed-side power coil.

[0011] In some embodiments, the non-contact coupling transmission circuit further comprises:

[0012] a fixed-side compensation circuit arranged between the fixed-side power conversion circuit and the fixed-side power coil, for compensating a power supply signal output by the fixed-side power conversion circuit; and / or

[0013] a rotor-side compensation circuit arranged between the rotor-side power conversion circuit and the rotor-side power coil, for compensating a power supply signal output by the rotor-side power coil of the non-contact coupling circuit.

[0014] In some embodiments, the fixed-side communication circuit comprises a fixed-side data conversion module, a fixed-side coupling filter module, and a fixed-side modulation and demodulation module.

[0015] The fixed-side data conversion module is configured to realize data conversion on the fixed side.

[0016] The fixed-side coupling filter module is connected to the fixed-side power coil, and is configured to couple a communication signal of the fixed-side modulation and demodulation module to the fixed-side power coil, or extract a signal in the fixed-side power coil and output the signal to the fixed-side modulation and demodulation module.

[0017] The fixed-side modulation and demodulation module is connected between the fixed-side coupling filter module and the fixed-side data conversion module, and is configured to realize signal modulation or signal demodulation between the fixed-side communication circuit and the rotor-side communication circuit.

[0018] In some embodiments, the rotor-side communication circuit comprises a rotor-side data conversion module, a rotor-side coupling filter module, and a rotor-side modulation and demodulation module.

[0019] The rotor-side data conversion module is configured to realize data conversion on the rotor side.

[0020] The rotor-side coupling filter module is connected to the rotor-side power coil, and is configured to couple a communication signal of the rotor-side modulation and demodulation module to the rotor-side power coil, or extract a signal in the rotor-side power coil and output the signal to the rotor-side modulation and demodulation module.

[0021] The rotor-side modulation and demodulation module is connected between the rotor-side coupling filter module and the rotor-side data conversion module, and is configured to realize signal modulation or signal demodulation between the rotor-side communication circuit and the fixed-side communication circuit.

[0022] In some embodiments, the rotor-side electric energy conversion circuit is further configured to output different power supply voltages from the electric energy provided by the rotor-side electric energy coil to power different loads connected to the rotor-side load terminals.

[0023] In some embodiments, the non-contact coupling transmission circuit comprises a plurality of fixed-side power supply terminals, a plurality of rotor-side load terminals, a plurality of fixed-side electric energy conversion circuits, and a plurality of rotor-side electric energy conversion circuits.

[0024] The non-contact coupling circuit comprises a plurality of fixed-side electric energy coils and rotor-side electric energy coils.

[0025] Each of the fixed-side power supply terminals is connected to a corresponding fixed-side electric energy coil in the non-contact coupling circuit via a corresponding fixed-side electric energy conversion circuit, and each of the rotor-side load terminals is connected to a corresponding rotor-side electric energy coil in the non-contact coupling circuit via a corresponding rotor-side electric energy conversion circuit.

[0026] In some embodiments, the fixed-side electric energy conversion circuit is connected to the first end and the second end of the fixed-side electric energy coil, and the fixed-side communication circuit is connected to the first end and the second end of the fixed-side electric energy coil; or

[0027] The fixed-side electric energy conversion circuit is connected to the first end and the second end of the fixed-side electric energy coil, and the fixed-side communication circuit is connected to the second end and the third end of the fixed-side electric energy coil.

[0028] In some embodiments, the rotor-side electric energy conversion circuit is connected to the first end and the second end of the rotor-side electric energy coil, and the rotor-side communication circuit is connected to the first end and the second end of the rotor-side electric energy coil; or

[0029] The rotor-side electric energy conversion circuit is connected to the first end and the second end of the rotor-side electric energy coil, and the rotor-side communication circuit is connected to the second end and the third end of the rotor-side electric energy coil.

[0030] Embodiments of the present application also provide a non-contact coupling transmission circuit, comprising: a fixed-side power supply terminal, a fixed-side electric energy conversion circuit, a non-contact coupling circuit, a rotor-side electric energy conversion circuit, a rotor-side load terminal, a fixed-side communication circuit, and a rotor-side communication circuit.

[0031] The non-contact coupling circuit comprises a fixed-side electric energy coil, a rotor-side electric energy coil, a fixed-side communication coil, and a rotor-side communication coil. The fixed-side electric energy coil and the rotor-side electric energy coil are oppositely arranged to realize the transmission of electric energy between the electric energy coils, and the fixed-side communication coil and the rotor-side communication coil are oppositely arranged to realize the transmission of communication signals between the communication coils.

[0032] the fixed side power supply end is connected to the fixed side power coil through the fixed side power conversion circuit, and the rotor side load end is connected to the rotor side power coil through the rotor side power conversion circuit;

[0033] the fixed side communication circuit and the rotor side communication circuit are connected to the fixed side communication coil and the rotor side communication coil respectively;

[0034] the fixed side communication circuit couples a fixed side communication signal to the fixed side communication coil, and the rotor side communication circuit extracts a communication signal in the rotor side communication coil; or

[0035] the rotor side communication circuit couples a rotor side communication signal to the rotor side communication coil, and the fixed side communication circuit extracts a communication signal in the fixed side communication coil.

[0036] The second aspect of the embodiment of the present application further provides a medical imaging device, which comprises an imaging device and the non-contact coupling transmission circuit according to any one of the above embodiments.

[0037] The embodiment of the present application has the beneficial effects that: by setting the fixed side power supply end connected to the fixed side power coil through the fixed side power conversion circuit, the rotor side load end connected to the rotor side power coil through the rotor side power conversion circuit, and the fixed side communication circuit and the rotor side communication circuit connected to the fixed side power coil and the rotor side power coil respectively, the fixed side communication circuit couples a fixed side communication signal to the fixed side communication coil, the rotor side communication circuit extracts a communication signal in the rotor side communication coil, or the rotor side communication circuit couples a rotor side communication signal to the rotor side communication coil, and the fixed side communication circuit extracts a communication signal in the fixed side communication coil, so that the transmission of power and communication signals between the fixed side power coil and the rotor side power coil is realized, and the device is simplified and the cost is reduced on the basis of guaranteeing the communication demand. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0039] Figure 1 Structure diagram of the non-contact coupling transmission circuit provided by an embodiment of the present application Figure 1 ;

[0040] Figure 2Structure diagram of non-contact coupling transmission circuit provided by an embodiment of the present application Figure 2 ;

[0041] Figure 3 Structure diagram of non-contact coupling transmission circuit provided by an embodiment of the present application Figure 3 ;

[0042] Figure 4 Structure diagram of non-contact coupling transmission circuit provided by an embodiment of the present application Figure 4 ;

[0043] Figure 5 Structure diagram of non-contact coupling transmission circuit provided by an embodiment of the present application Figure 5 ;

[0044] Figure 6 Structure diagram of non-contact coupling transmission circuit provided by an embodiment of the present application Figure 6 ;

[0045] Figure 7 Structure diagram of non-contact coupling transmission circuit provided by an embodiment of the present application Figure 7 ;

[0046] Figure 8 Structure diagram of non-contact coupling transmission circuit provided by an embodiment of the present application Figure 8 ;

[0047] Figure 9 Structure diagram of non-contact coupling transmission circuit provided by an embodiment of the present application Figure 9 . DETAILED DESCRIPTION

[0048] In order to make the technical problems solved by the present application, the technical solutions and the beneficial effects clearer, the present application will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0049] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0050] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0051] In addition, the terms "first", "second" are only used for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0052] In the related art, the basic structure of the CT device mainly includes the following key components: an X-ray tube, a slip ring, a detector, a Data Acquisition System (DAS) system, a high-voltage generator, etc. The slip ring is mainly used to ensure the transmission of electrical energy and signals between the rotor part and the fixed part. It provides power for the scanning frame and transmits signals to the rotating gantry, while receiving signals from the DAS system and transmitting data to the fixed side. That is, the electrical connection between the fixed side and the rotor side is usually achieved by using a slip ring. Since the slip ring uses the friction contact between two conductor elements to achieve the transmission of electrical energy and signals, it limits the rotation speed of the rotor and the power of the transmitted electrical energy, and it is difficult to improve the rate of signal transmission.

[0053] To solve the above technical problems, the embodiments of the present application propose a non-contact coupling circuit for realizing power transmission and bidirectional communication transmission between the fixed side and the rotor side of the CT gantry, as shown in Figure 1As shown, the non-contact coupling transmission circuit in the embodiment includes: a fixed side power supply end 311, a fixed side electric energy conversion circuit 312, a non-contact coupling circuit 100, a rotor side electric energy conversion circuit 322, a rotor side load end 321, a fixed side communication circuit 210, and a rotor side communication circuit 220; the non-contact coupling circuit 100 at least includes a fixed side electric energy coil 111 and a rotor side electric energy coil 112, the fixed side electric energy coil 111 is arranged opposite to the rotor side electric energy coil 112 to realize the transmission of electric energy and communication signals between the coils; the fixed side power supply end 311 is connected to the fixed side electric energy coil 111 through the fixed side electric energy conversion circuit 312, the fixed side electric energy conversion circuit 312 is used to adjust the electric parameters of the power supply signal input by the fixed side power supply end 311 and then output to the fixed side electric energy coil 111; the rotor side load end 321 is connected to the rotor side electric energy coil 112 through the rotor side electric energy conversion circuit 322, the rotor side electric energy conversion circuit 322 is used to adjust the electric parameters of the power supply signal output by the rotor side electric energy coil 112 and then output to the rotor side load end 321; the fixed side communication circuit 210 and the rotor side communication circuit 220 are respectively connected to the two sides of the non-contact coupling circuit 100, and the non-contact coupling circuit 100 is also used to realize the transmission of communication signals between the fixed side communication circuit 210 and the rotor side communication circuit 220.

[0054] In the embodiment, the non-contact coupling transmission circuit is used to realize the transmission of power supply and communication between the stator and the rotor of the CT gantry. The fixed side electric energy coil 111 and the rotor side electric energy coil 112 which can realize the mutual transmission of energy are arranged in the non-contact coupling circuit 100, the fixed side electric energy coil 111 is located in the stator of the CT gantry, the rotor side electric energy coil 112 is located in the rotor of the CT gantry, the energy is inducted between the fixed side electric energy coil 111 and the rotor side electric energy coil 112 to realize the transmission of electric energy between the stator fixed side and the rotor rotor side, and the transmission of communication signals between the stator fixed side and the rotor rotor side. The fixed side electric energy conversion circuit 312 is used to adjust the electric parameters of the power supply signal input by the fixed side power supply end 311 and then output to the fixed side electric energy coil 111, and the rotor side electric energy conversion circuit 322 is used to adjust the electric parameters of the power supply signal output by the rotor side electric energy coil 112 and then output to the rotor side load end 321; the fixed side communication circuit 210 and the rotor side communication circuit 220 are respectively connected to the two sides of the non-contact coupling circuit 100, and the non-contact coupling circuit 100 is also used to realize the transmission of communication signals between the fixed side communication circuit 210 and the rotor side communication circuit 220, which can avoid the negative influence of the conductor contact between the rotor side and the fixed side in the CT system on the rotation speed of the rotor and the transmission of signals, and realize the non-contact transmission of electric energy and communication signals through the non-contact coupling circuit 100, which is conducive to simplifying the equipment and reducing the cost on the basis of ensuring the communication demand.

[0055] In some embodiments, the fixed side electric energy conversion circuit 312 is configured to adjust the electric parameters of the power signal input from the fixed side power supply end 311 and output to the fixed side electric energy coil 111. In some embodiments, the rotor side electric energy conversion circuit 322 can adjust the voltage and current of the power signal output from the rotor side electric energy coil 112, and can also convert the alternating current output from the rotor side electric energy coil 112 into direct current and output to the rotor side load end 321, or adjust the frequency and voltage of the alternating current output from the rotor side electric energy coil 112.

[0056] In some embodiments, the non-contact coupling circuit 100 can further include a magnetic core, which can improve the coupling efficiency between the fixed side electric energy coil 111 and the rotor side electric energy coil 112.

[0057] In some embodiments, the number of connection lines on the fixed side electric energy coil 111 and the rotor side electric energy coil 112 can be set as needed, Figures 1 to 9 In some embodiments, the number of connection lines on the coil is only an example and does not represent the actual number of lines. For example, in Figure 1 In some embodiments, the fixed side power supply end 311 and the fixed side electric energy conversion circuit 312 can be electrically connected by two connection lines, and in actual application, the number of lines can not be limited to two.

[0058] In some embodiments, referring to Figure 2 As shown, the non-contact coupling transmission circuit further includes a fixed side compensation circuit 313, which is arranged between the fixed side electric energy conversion circuit 312 and the fixed side electric energy coil 111 of the non-contact coupling circuit 100, and the fixed side compensation circuit 313 is configured to compensate the power signal output from the fixed side electric energy conversion circuit 312.

[0059] In some embodiments, referring to Figure 2 As shown, the non-contact coupling transmission circuit further includes a rotor side compensation circuit 323, which is arranged between the rotor side electric energy conversion circuit 322 and the rotor side electric energy coil 112 of the non-contact coupling circuit 100, and the rotor side compensation circuit 323 is configured to compensate the power signal output from the rotor side electric energy coil 112 of the non-contact coupling circuit 100.

[0060] In some embodiments, the fixed side compensation circuit 313 can include one or more compensation capacitors.

[0061] In some embodiments, the rotor side compensation circuit 323 can include one or more compensation capacitors.

[0062] In some embodiments, referring to Figure 3As shown, the fixed side communication circuit 210 comprises a fixed side data conversion module 213, a fixed side modulation and demodulation module 212, and a fixed side coupling filter module 211. The fixed side data conversion module 213 can receive a fixed side communication signal from the outside or provide a received rotor side communication signal to the outside, and realize data conversion of the fixed side. The fixed side modulation and demodulation module 212 is connected between the fixed side coupling filter module 211 and the fixed side data conversion module 213, and can realize signal modulation or signal demodulation between the fixed side communication circuit 210 and the rotor side communication circuit 220. The fixed side coupling filter module 211 is connected with the fixed side power coil 111, and can couple a communication signal provided by the fixed side modulation and demodulation module 212 to the fixed side power coil 111, or extract a signal in the fixed side power coil 111 and output it to the fixed side modulation and demodulation module 212. The fixed side modulation and demodulation module 212 demodulates the signal and outputs it to the fixed side data conversion module 213.

[0063] In some embodiments, the fixed side coupling filter module 211 can convert a fixed side communication signal provided by the fixed side data conversion module 213 into a plurality of communication sub-carrier signals and couple them to the fixed side power coil 111. The fixed side coupling filter module 211 can also extract a plurality of communication sub-carrier signals from the fixed side power coil 111 and output them to the fixed side data conversion module 213.

[0064] In some embodiments, referring to Figure 4 As shown, the rotor side communication circuit 220 comprises a rotor side data conversion module 223, a rotor side modulation and demodulation module 222, and a rotor side coupling filter module 221. The rotor side data conversion module 223 is used to realize data conversion of the fixed side. The rotor side modulation and demodulation module 222 is connected between the rotor side coupling filter module 221 and the rotor side data conversion module 223, and is used to realize signal modulation or signal demodulation between the rotor side communication circuit 220 and the fixed side communication circuit 210. The rotor side coupling filter module 221 is connected with the rotor side power coil 112, and is used to couple a communication signal of the rotor side modulation and demodulation module 222 to the rotor side power coil 112, or extract a signal in the rotor side power coil 112 and output it to the rotor side modulation and demodulation module 222. The rotor side modulation and demodulation module 222 demodulates the signal and outputs it to the rotor side data conversion module 223.

[0065] In some embodiments, the fixed side modulation and demodulation module 212 can modulate or demodulate the output signal and the input signal of the fixed side data conversion module 213, and the rotor side modulation and demodulation module 222 can modulate or demodulate the output signal and the input signal of the rotor side data conversion module 223. In the present embodiment, through the modulation and demodulation of the fixed side modulation and demodulation module 212 and the rotor side modulation and demodulation module 222, the amplitude of the communication signal can be greater than the amplitude of the noise in the power signal. In a specific application, the fixed side data conversion module 213 can first determine the noise in the power signal, and then determine the minimum amplitude of the communication signal, so as to distinguish the communication signal from the power signal. The higher the frequency, the lower the noise.

[0066] In some embodiments, the rotor side coupling filter module 221 can be a high-pass filter, which can separate the amplitude of the communication signal to generate a corresponding communication signal output to the rotor side modulation and demodulation module 222, and the rotor side modulation and demodulation module 222 can demodulate the corresponding communication signal.

[0067] In some embodiments, the fixed side coupling filter module 211 can be a high-pass filter, which can separate the amplitude of the communication signal to generate a corresponding communication signal output to the fixed side data conversion module 213, and the fixed side data conversion module 213 can demodulate the corresponding communication signal.

[0068] In some embodiments, the fixed side coupling filter module 211 and the rotor side coupling filter module 221 can perform time-sharing coupling and filtering, so as to perform communication transmission between the fixed side and the rotor side according to a preset time-sharing mechanism.

[0069] In some embodiments, the duty cycle and the time length of the uplink and the downlink between the fixed side and the rotor side can be set by a protocol, for example, by the fixed side data conversion module 213 or the rotor side data conversion module 223.

[0070] In some embodiments, the rotor side power conversion circuit 322 is further configured to output different power supply voltages according to the power provided by the rotor side power coil 112, so as to supply power to a plurality of loads connected to the rotor side load end 321.

[0071] In some embodiments, referring to Figure 5As shown, the non-contact coupling transmission circuit includes a plurality of fixed-side power supply terminals 311, a plurality of rotor-side load terminals 321, a plurality of fixed-side power conversion circuits 312, and a plurality of rotor-side power conversion circuits 322; each fixed-side power supply terminal 311 is connected to a corresponding fixed-side power coil 111 in the non-contact coupling circuit 100 via a corresponding fixed-side power conversion circuit 312, and each rotor-side load terminal 321 is connected to a corresponding rotor-side power coil 112 in the non-contact coupling circuit 100 via a corresponding rotor-side power conversion circuit 322.

[0072] In some embodiments, referring to Figure 6 As shown, the fixed-side power conversion circuit 312 is connected to the first end and the second end of the fixed-side power coil 111, and the fixed-side communication circuit 210 is connected to the second end and the third end of the fixed-side power coil 111.

[0073] In some embodiments, the fixed-side power conversion circuit 312 is connected to the first end and the second end of the fixed-side power coil 111, and the fixed-side communication circuit 210 is connected to the first end and the second end of the fixed-side power coil 111.

[0074] In some embodiments, referring to Figure 7 As shown, the rotor-side power conversion circuit 312 is connected to the first end and the second end of the rotor-side power coil 112, and the rotor-side communication circuit 220 is connected to the second end and the third end of the rotor-side power coil 112.

[0075] In some embodiments, the rotor-side power conversion circuit 312 is connected to the first end and the second end of the rotor-side power coil 112, and the rotor-side communication circuit 220 is connected to the first end and the second end of the rotor-side power coil 112.

[0076] In some embodiments, referring to Figure 8 As shown, the fixed-side power conversion circuit 312 is connected to the first end and the second end of the fixed-side power coil 111, the fixed-side communication circuit 210 is connected to the second end and the third end of the fixed-side power coil 111, the rotor-side power conversion circuit 312 is connected to the first end and the second end of the rotor-side power coil 112, and the rotor-side communication circuit 220 is connected to the second end and the third end of the rotor-side power coil 112.

[0077] Figure 9 For another schematic diagram of a non-contact coupling transmission circuit, referring to Figure 9 As shown, the non-contact coupling transmission circuit in this embodiment includes a fixed-side power supply terminal 311, a fixed-side power conversion circuit 312, a non-contact coupling circuit 100, a rotor-side power conversion circuit 322, a rotor-side load terminal 321, a fixed-side communication circuit 210, and a rotor-side communication circuit 220.

[0078] The non-contact coupling circuit 100 comprises a fixed side electric energy coil 111 and a rotor side electric energy coil 112, a fixed side communication coil 121 and a rotor side communication coil 122, the fixed side electric energy coil 111 is arranged opposite to the rotor side electric energy coil 112 to realize the transmission of electric energy between the coils, the fixed side communication circuit 210 is connected to the fixed side communication coil of the non-contact coupling circuit 100, the rotor side communication circuit 220 is connected to the rotor side communication coil of the non-contact coupling circuit 100, and the fixed side communication coil 121 and the rotor side communication coil 122 are arranged opposite to each other to realize the transmission of communication signals between the coils.

[0079] In the embodiment, the fixed side power supply end 311 is connected to the fixed side electric energy coil 111 through the fixed side electric energy conversion circuit 312, the fixed side electric energy conversion circuit 312 is used for adjusting the electric parameters of the power supply signal input by the fixed side power supply end 311 and then outputting to the fixed side electric energy coil 111. The rotor side load end 321 is connected to the rotor side electric energy coil 112 through the rotor side electric energy conversion circuit 322, the rotor side electric energy conversion circuit 322 is used for adjusting the electric parameters of the power supply signal output by the rotor side electric energy coil 112 and then outputting to the rotor side load end 321. The fixed side communication circuit 210 and the rotor side communication circuit 220 are connected to the fixed side communication coil 121 and the rotor side communication coil 122 respectively, the fixed side communication circuit 210 couples the communication signal of the fixed side to the fixed side communication coil 121, and the rotor side communication circuit 220 extracts the communication signal in the rotor side communication coil 122; or the rotor side communication circuit 220 couples the communication signal of the rotor side to the rotor side communication coil 122, and the fixed side communication circuit 210 extracts the communication signal in the fixed side communication coil 121, so as to realize the bidirectional transmission of the communication signal between the fixed side communication circuit 210 and the rotor side communication circuit 220.

[0080] The embodiment of the application further provides a medical imaging device, which comprises an imaging device and the non-contact coupling transmission circuit according to any one of the above-mentioned embodiments, and the imaging device can perform imaging according to the communication signal provided by the non-contact coupling transmission circuit.

[0081] In some embodiments, the medical imaging device can be a medical device, for example, a computerized tomography (CT) machine, the non-contact coupling transmission circuit according to any one of the above-mentioned embodiments is used in the CT machine, so that the data communication and the electric energy transmission function between the fixed side and the rotor side in the CT machine can be realized, the non-contact transmission of the electric energy and the communication signal is realized at the same time through the non-contact coupling circuit, which is beneficial to simplifying the device and reducing the cost on the basis of ensuring the communication demand.

[0082] The beneficial effects of the embodiments of the present application are: by setting the fixed side power supply end connected to the fixed side electric energy conversion circuit through the fixed side electric energy coil, the rotor side load end connected to the rotor side electric energy coil through the rotor side electric energy conversion circuit, and the fixed side communication circuit and the rotor side communication circuit connected to the fixed side electric energy coil and the rotor side electric energy coil respectively, the fixed side communication signal is coupled to the fixed side electric energy coil by the fixed side communication circuit, the rotor side communication circuit extracts the communication signal in the rotor side electric energy coil, the rotor side communication signal can also be coupled to the rotor side electric energy coil by the rotor side communication circuit, the fixed side communication circuit extracts the communication signal in the fixed side electric energy coil, thereby realizing the transmission of electric energy and communication signal between the fixed side electric energy coil and the rotor side electric energy coil, simplifying the equipment and reducing the cost on the basis of ensuring the communication demand.

[0083] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A non-contact coupled transmission circuit, characterized by, The non-contact coupling transmission circuit comprises a fixed side power supply end (311), a fixed side electric energy conversion circuit (312), a non-contact coupling circuit (100), a rotor side electric energy conversion circuit (322), a rotor side load end (321), a fixed side communication circuit (210) and a rotor side communication circuit (220); The non-contact coupling circuit (100) comprises at least a fixed side electric energy coil (111) and a rotor side electric energy coil (112), wherein the fixed side electric energy coil (111) is arranged opposite to the rotor side electric energy coil (112) to realize transmission of electric energy and communication signals between the coils; The fixed side power supply end (311) is connected to the fixed side electric energy coil (111) through the fixed side electric energy conversion circuit (312), and the rotor side load end (321) is connected to the rotor side electric energy coil (112) through the rotor side electric energy conversion circuit (322); The fixed side communication circuit (210) and the rotor side communication circuit (220) are connected to the fixed side electric energy coil (111) and the rotor side electric energy coil (112) respectively; The fixed side communication circuit (210) couples a fixed side communication signal to the fixed side electric energy coil (111), and the rotor side communication circuit (220) extracts a communication signal in the rotor side electric energy coil (112); or The rotor side communication circuit (220) couples a rotor side communication signal to the rotor side electric energy coil (112), and the fixed side communication circuit (210) extracts a communication signal in the fixed side electric energy coil (111).

2. The non-contact coupled transmission circuit of claim 1, wherein, The non-contact coupling transmission circuit further comprises: a fixed side compensation circuit (313) arranged between the fixed side electric energy conversion circuit (312) and the fixed side electric energy coil (111) and used for compensating a power supply signal output by the fixed side electric energy conversion circuit (312); and / or a rotor side compensation circuit (323) arranged between the rotor side electric energy conversion circuit (322) and the rotor side electric energy coil (112) and used for compensating a power supply signal output by the rotor side electric energy coil (112) of the non-contact coupling circuit (100).

3. The non-contact coupled transmission circuit of claim 1, wherein, The fixed side communication circuit (210) comprises a fixed side data conversion module (213), a fixed side coupling filter module (211) and a fixed side modulation and demodulation module (212); The fixed side data conversion module (213) is used for realizing data conversion of the fixed side; The fixed side coupling filter module (211) is connected to the fixed side electric energy coil (111) and is used for coupling a communication signal of the fixed side modulation and demodulation module (212) to the fixed side electric energy coil (111) or extracting a signal in the fixed side electric energy coil (111) and outputting the signal to the fixed side modulation and demodulation module (212); The fixed side modulation and demodulation module (212) is connected between the fixed side coupling filter module (211) and the fixed side data conversion module (213), and is used for realizing signal modulation or signal demodulation between the fixed side communication circuit (210) and the rotor side communication circuit (220).

4. The non-contact coupled transmission circuit of claim 1, wherein, The rotor side communication circuit (220) comprises a rotor side data conversion module (223), a rotor side coupling filter module (221) and a rotor side modulation and demodulation module (222). The rotor side data conversion module (223) is used for realizing data conversion on the rotor side. The rotor side coupling filter module (221) is connected with the rotor side power coil (112), and is used for coupling the communication signal of the rotor side modulation and demodulation module (222) to the rotor side power coil (112), or extracting the signal in the rotor side power coil (112) and outputting the signal to the rotor side modulation and demodulation module (222). The rotor side modulation and demodulation module (222) is connected between the rotor side coupling filter module (221) and the rotor side data conversion module (223), and is used for realizing signal modulation or signal demodulation between the rotor side communication circuit (220) and the fixed side communication circuit (210).

5. A non-contact coupled transmission circuit as claimed in any one of claims 1-4, characterized in that, The rotor side power conversion circuit (322) is further used for outputting different power supply voltages from the power output of the rotor side power coil (112) to supply power to a plurality of loads connected to the rotor side load end (321).

6. A non-contact coupled transmission circuit as claimed in any one of claims 1-4, characterized in that, The non-contact coupling transmission circuit comprises a plurality of fixed side power supply ends (311), a plurality of rotor side load ends (321), a plurality of fixed side power conversion circuits (312) and a plurality of rotor side power conversion circuits (322). The non-contact coupling circuit (100) comprises a plurality of fixed side power coils and rotor side power coils. Each fixed side power supply end (311) is connected to a corresponding fixed side power coil (111) in the non-contact coupling circuit (100) through a corresponding fixed side power conversion circuit (312), and each rotor side load end (321) is connected to a corresponding rotor side power coil (112) in the non-contact coupling circuit (100) through a corresponding rotor side power conversion circuit (322).

7. A non-contact coupled transmission circuit as claimed in any one of claims 1-4, characterized in that, The fixed side power conversion circuit (312) is connected to the first end and the second end of the fixed side power coil (111), and the fixed side communication circuit (210) is connected to the first end and the second end of the fixed side power coil (111); or The fixed side power conversion circuit (312) is connected to the first end and the second end of the fixed side power coil (111), and the fixed side communication circuit (210) is connected to the second end and the third end of the fixed side power coil (111).

8. The non-contact coupled transmission circuit of any one of claims 1-4, wherein, The rotor side power conversion circuit (312) is connected to the first end and the second end of the rotor side power coil (112), and the rotor side communication circuit (220) is connected to the first end and the second end of the rotor side power coil (112); or The rotor side power conversion circuit (312) is connected to the first end and the second end of the rotor side power coil (112), and the rotor side communication circuit (220) is connected to the first end and the second end of the rotor side power coil (112). The rotor-side power conversion circuit (312) is connected to the first end and the second end of the rotor-side power coil (112), and the rotor-side communication circuit (220) is connected to the second end and the third end of the rotor-side power coil (112).

9. A non-contact coupled transmission circuit, characterized by, The non-contact coupling transmission circuit comprises a fixed-side power supply end (311), a fixed-side power conversion circuit (312), a non-contact coupling circuit (100), a rotor-side power conversion circuit (322), a rotor-side load end (321), a fixed-side communication circuit (210), and a rotor-side communication circuit (220). The non-contact coupling circuit (100) comprises a fixed-side power coil (111), a rotor-side power coil (112), a fixed-side communication coil (121), and a rotor-side communication coil (122). The fixed-side power coil (111) is arranged opposite to the rotor-side power coil (112) to realize transmission of power between the power coils. The fixed-side communication coil (121) and the rotor-side communication coil (122) are arranged opposite to each other to realize transmission of communication signals between the communication coils. The fixed-side power supply end (311) is connected to the fixed-side power coil (111) through the fixed-side power conversion circuit (312), and the rotor-side load end (321) is connected to the rotor-side power coil (112) through the rotor-side power conversion circuit (322). The fixed-side communication circuit (210) and the rotor-side communication circuit (220) are connected to the fixed-side communication coil (121) and the rotor-side communication coil (122), respectively. The fixed-side communication circuit (210) couples a fixed-side communication signal to the fixed-side communication coil (121), and the rotor-side communication circuit (220) extracts a communication signal from the rotor-side communication coil (122); or The rotor-side communication circuit (220) couples a rotor-side communication signal to the rotor-side communication coil (122), and the fixed-side communication circuit (210) extracts a communication signal from the fixed-side communication coil (121).

10. A medical imaging apparatus, characterized by An imaging device and a non-contact coupling transmission circuit as claimed in any one of claims 1 to 9 are included.

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