Method for establishing magnetic resonance radio frequency signal receiving link and receiving link

Abstract

The invention relates to a link establishment method of a magnetic resonance radio frequency signal receiving link and the receiving link. The method comprises the following steps: a radio frequency signal conversion module obtains a clock signal output by a digital signal processing module, and generates a digital link building signal based on the clock signal; generating a link establishment instruction based on the digital link establishment signal; generating link establishment data based on the link establishment instruction; the digital signal processing module obtains the link establishment data and identifies the link establishment data and the digital link establishment signal to obtain an identification result; and completing establishment of a magnetic resonance radio frequency signal receiving link based on an identification result. By adopting the method, the link between the radio frequency signal conversion module and the digital signal processing module can be established after the radio frequency signal conversion module and the digital signal processing module are separately arranged.

Description

Technical Field

[0001] This application relates to the field of magnetic resonance imaging technology, and in particular, to a method for establishing a link in a magnetic resonance radio frequency signal receiving link and a receiving link. Background Art

[0002] In the radio frequency data receiving data link of a magnetic resonance imaging device, a radio frequency signal conversion module converts a magnetic resonance radio frequency signal into a high-speed digital signal and transmits it to a digital signal processing module.

[0003] In related technologies, in order to ensure various different connection requirements such as a short distance, equal length, good signal integrity, and the use of multiple auxiliary low-speed signals between the radio frequency signal conversion module and the digital signal processing module, the radio frequency signal conversion module and the digital signal processing module are usually placed on the same circuit board.

[0004] However, the setting method using the same circuit board has problems of high power consumption and large size. After separating the radio frequency signal conversion module and the digital signal processing module, how to establish a long-distance communication link between the radio frequency signal conversion module and the digital signal processing module becomes an urgent problem to be solved. Summary of the Invention

[0005] Based on this, in view of the above technical problems, it is necessary to provide a method for establishing a link in a magnetic resonance radio frequency signal receiving link and a receiving link, which can establish a link between the radio frequency signal conversion module and the digital signal processing module after the two are separated.

[0006] In a first aspect, this application provides a method for establishing a link in a magnetic resonance radio frequency signal receiving link, and the method includes:

[0007] The radio frequency signal conversion module obtains a clock signal output by the digital signal processing module, and generates a digital link establishment signal based on the clock signal;

[0008] Generates a link establishment instruction based on the digital link establishment signal;

[0009] Generates link establishment data based on the link establishment instruction;

[0010] The digital signal processing module obtains the link establishment data, and identifies the link establishment data and the digital link establishment signal to obtain an identification result;

[0011] Completes the establishment of the magnetic resonance radio frequency signal receiving link based on the identification result.

[0012] In one embodiment, the radio frequency signal conversion module obtains a clock signal output by the digital signal processing module, and generates a digital link establishment signal based on the clock signal, including:

[0013] The radio frequency signal conversion module generates a stable clock signal in response to a clock signal;

[0014] Generates a digital link establishment signal based on the stable clock signal.

[0015] In one embodiment, generating a link establishment instruction based on the digital link establishment signal includes:

[0016] The radio frequency signal conversion module acquires the digital link establishment signal and generates a link establishment instruction.

[0017] In one embodiment, generating link establishment data based on the link establishment instruction includes:

[0018] The radio frequency signal conversion module generates a synchronization signal based on the link establishment instruction;

[0019] And adjusts the parameters of the data to be output based on the synchronization signal to obtain link establishment data.

[0020] In one embodiment, adjusting the parameters of the data to be output based on the synchronization signal includes:

[0021] Responds to the digital protocol carried on the signal transmitter in the radio frequency signal conversion module and adjusts the format and / or phase of the data to be output.

[0022] In one embodiment, completing the establishment of the magnetic resonance radio frequency signal receiving link based on the recognition result includes:

[0023] Responds to the recognition result being link establishment failure;

[0024] Controls the radio frequency signal conversion module to re-acquire the link establishment instruction, update the link establishment data, and re-acquire the recognition result until the re-acquired recognition result is link establishment success.

[0025] In one embodiment, generating a link establishment instruction based on the digital link establishment signal includes:

[0026] When the radio frequency signal conversion module generates a digital link establishment signal, it synchronously starts timing for a first preset duration;

[0027] When the digital signal processing module acquires the digital link establishment signal, it synchronously starts timing for a second preset duration;

[0028] In response to the arrival of the first preset duration, the radio frequency signal conversion module generates a first link establishment instruction;

[0029] In response to the arrival of the second preset duration, the digital signal processing module generates a second link establishment instruction;

[0030] Wherein, the first link establishment instruction and the second link establishment instruction are mutually matching link establishment instructions.

[0031] In one embodiment, establishing a magnetic resonance radio frequency signal receiving link based on the recognition result includes:

[0032] In response to the recognition result being that link establishment fails;

[0033] The radio frequency signal conversion module then re-obtains a clock signal to generate a new digital link establishment signal;

[0034] Generate a new link establishment instruction based on the new digital link establishment signal, and update the link establishment data based on the new establishment instruction;

[0035] The digital signal processing module re-obtains the recognition result based on the updated link establishment data until the re-obtained recognition result is that link establishment is successful.

[0036] In one embodiment, the recognition result being that link establishment fails means that the parameter information of the link establishment data is consistent with the parameter information of the digital link establishment signal;

[0037] The recognition result being that link establishment is successful means that the parameter information of the link establishment data is inconsistent with the parameter information of the digital link establishment signal.

[0038] In a second aspect, the present application also provides a magnetic resonance radio frequency signal receiving link, which is used to receive and / or process radio frequency signals generated by a magnetic resonance imaging device;

[0039] The receiving link includes at least one radio frequency signal conversion module and a digital signal processing module, and at least one radio frequency signal conversion module and the digital signal processing module are independently arranged with each other in the magnetic resonance imaging device;

[0040] At least one radio frequency signal conversion module and the digital signal processing module are connected by a wireless or wired method.

[0041] In one embodiment, each radio frequency signal conversion module includes at least one analog signal processor, at least one analog-to-digital converter, and a signal transmitter, the analog signal processors are connected to the analog-to-digital converters in a one-to-one correspondence, and each analog-to-digital converter is connected to the signal transmitter;

[0042] Each analog signal processor is used to preprocess the analog radio frequency signal received by the receiving coil and send the preprocessed analog radio frequency signal to the corresponding analog-to-digital converter;

[0043] Each analog-to-digital converter is used to convert the preprocessed analog radio frequency signal into a digital radio frequency signal, and / or convert the digital radio frequency signal into corresponding link establishment data based on the digital protocol carried on the signal transmitter, and send the link establishment data to the signal transmitter;

[0044] The signal transmitter is used to send the link establishment data to the digital signal processing module.

[0045] In one embodiment, the digital signal processing module includes a signal receiver and a data receiving processor, and the signal receiver is connected to the data receiving processor;

[0046] The signal receiver is configured to receive the link establishment data sent by the radio frequency signal conversion module and send the link establishment data to the data receiving processor;

[0047] The data receiving processor is configured to parse and process the link establishment data and send the digital radio frequency signal corresponding to the link establishment data to the host computer.

[0048] In one embodiment, each radio frequency signal conversion module is dispersedly arranged on the hospital bed of the magnetic resonance imaging device, and the digital signal processing module is arranged on the magnet side of the magnetic resonance imaging device; or,

[0049] At least one radio frequency signal conversion module is integrated in the receiving line, and the digital signal processing module is arranged on the magnet side of the magnetic resonance imaging device.

[0050] In one embodiment, the radio frequency signal conversion module and the digital signal processing module communicate through millimeter waves or optical signals.

[0051] In a third aspect, the present application further provides a magnetic resonance imaging device, which includes a magnetic resonance device body, a hospital bed, a receiving coil, and the radio frequency data receiving link according to any one of the second aspects above;

[0052] The magnetic resonance device body forms a cavity in a ring shape, the hospital bed is used to support the receiving coil, and the receiving coil moves in the cavity following the hospital bed.

[0053] In a fourth aspect, the present application provides a link establishment device for a magnetic resonance radio frequency signal receiving link, characterized in that the device includes:

[0054] A signal generation module, configured to obtain a clock signal output by the digital signal processing module for the radio frequency signal conversion module and generate a digital link establishment signal based on the clock signal;

[0055] An instruction generation module, configured to generate a link establishment instruction based on the digital link establishment signal;

[0056] A data generation module, configured to generate link establishment data based on the link establishment instruction;

[0057] A result acquisition module, configured to obtain the link establishment data for the digital signal processing module and identify the link establishment data and the digital link establishment signal to obtain an identification result;

[0058] A link establishment module, configured to complete the establishment of the magnetic resonance radio frequency signal receiving link based on the identification result.

[0059] Fifth aspect, the present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the content of any one of the embodiments of the long-distance link establishment method for the magnetic resonance radio frequency signal receiving link in the first aspect above.

[0060] Sixth aspect, the present application also provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, it implements the content of any one of the embodiments of the long-distance link establishment method for the magnetic resonance radio frequency signal receiving link in the first aspect above.

[0061] In the above-mentioned link establishment method and receiving link of the magnetic resonance radio frequency signal receiving link, the radio frequency signal conversion module obtains the clock signal output by the digital signal processing module, generates a digital link establishment signal based on the clock signal; generates a link establishment instruction based on the digital link establishment signal; generates link establishment data based on the link establishment instruction; the digital signal processing module obtains the link establishment data, and identifies the link establishment data and the digital link establishment signal to obtain an identification result; and completes the establishment of the magnetic resonance radio frequency signal receiving link based on the identification result. In the case where the radio frequency signal conversion module and the digital signal processing module are separately arranged, this method completes the establishment of the magnetic resonance radio frequency signal receiving link through the mutual cooperation of the radio frequency signal conversion module and the digital signal processing module. In this way, it is possible to separately arrange the radio frequency signal conversion module and the digital signal processing module to reduce the size of the receiving link and the power consumption during use, and also solve the problems of high heat dissipation requirements and fixed positions. In addition, through data transmission using this receiving link, the integrity of the radio frequency signal during transmission can be guaranteed, and the situation of partial loss of radio frequency signals can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is an application environment diagram of the long-distance link establishment method in some embodiments of the present application;

[0063] Figure 2 It is a schematic flowchart of the long-distance link establishment method in some embodiments of the present application;

[0064] Figure 3 It is a schematic flowchart of the long-distance link establishment method in some embodiments of the present application;

[0065] Figure 4 It is a schematic diagram of the receiving link in some embodiments of the present application;

[0066] Figure 5 It is a schematic flowchart of the long-distance link establishment method in some embodiments of the present application;

[0067] Figure 6 It is a schematic flowchart of the long-distance link establishment method in some embodiments of the present application;

[0068] Figure 7a Schematic diagram of the receiving link in some embodiments of the present application;

[0069] Figure 7b Schematic diagram of the receiving link in some embodiments of the present application;

[0070] Figure 8 Schematic flow chart of the method for establishing a receiving link in some embodiments of the present application;

[0071] Figure 9 Schematic flow chart of the method for establishing a receiving link in some embodiments of the present application;

[0072] Figure 10 Schematic flow chart of the method for establishing a long-distance link in some embodiments of the present application;

[0073] Figure 11 Schematic flow chart of the method for establishing a long-distance link in some embodiments of the present application;

[0074] Figure 12a Schematic diagram of the receiving link in some embodiments of the present application;

[0075] Figure 12b Schematic diagram of the receiving link in some embodiments of the present application;

[0076] Figure 13 Schematic diagram of the process of establishing a receiving link in some embodiments of the present application;

[0077] Figure 14 Schematic diagram of the process of establishing a receiving link in some embodiments of the present application;

[0078] Figure 15 Schematic diagram of the receiving link in some embodiments of the present application;

[0079] Figure 16 Schematic diagram of the application process of the receiving link in some embodiments of the present application;

[0080] Figure 17 Schematic diagram of the receiving link in some embodiments of the present application;

[0081] Figure 18 Schematic diagram of the receiving link in some embodiments of the present application;

[0082] Figure 19 Schematic diagram of the receiving link in some embodiments of the present application;

[0083] Figure 20 Distribution diagram of the radio frequency signal conversion module on the hospital bed in some embodiments of the present application;

[0084] Figure 21 This is a structural block diagram of a long-distance link establishment device in some embodiments of the present application.

[0085] Description of the reference numerals in the drawings:

[0086] 10: Receiving link; 11: RF signal conversion module;

[0087] 111: Analog signal processor; 112: Analog-to-digital converter;

[0088] 113: Signal transmitter; 114: Clock signal receiver;

[0089] 115: Configurator; 116: Clock distributor;

[0090] 12: Digital signal processing module; 121: Signal receiver;

[0091] 122: Data receiving processor; 123: Clock signal transmitter;

[0092] 124: Clock source; 20: Magnetic resonance imaging device;

[0093] 201: Hospital bed; 202: Magnet;

[0094] 203: Main body of the magnetic resonance device; 21: Receiving coil;

[0095] 30: Host computer. Detailed implementation manners

[0096] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below 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 are not used to limit the present application.

[0097] Before introducing the technical solutions of the present application in detail, the background technology of the present application will be briefly introduced.

[0098] Magnetic resonance imaging technology uses a high-intensity magnetic field and radio frequency pulses of a specific frequency to excite the target area. After the termination of the radio frequency pulses, the atomic nuclei inside the target area undergo a relaxation phenomenon. The receiving coil receives the radio frequency signal. After spatially encoding and image reconstruction of this radio frequency signal, a magnetic resonance image is obtained. The magnetic resonance radio frequency signal receiving link includes a radio frequency signal conversion module and a digital signal processing module. The radio frequency signal conversion module includes at least one analog-to-digital converter (ADC). The ADC is used to convert the analog radio frequency signal received by the receiving coil into a digital radio frequency signal. The radio frequency signal conversion module sends this digital radio frequency signal to the digital signal processing module. The digital signal processing module is used to perform subsequent digital signal processing on the digital radio frequency signal and transmit the processed digital radio frequency signal to the host computer.

[0099] With the increase in the number of channels of the magnetic resonance receiving coil, the data transmission rate between the radio frequency signal conversion module and the digital signal processing module increases accordingly. To avoid error codes during data transmission, a high-speed data transmission protocol is usually used to achieve the stable establishment of the radio frequency signal receiving link.

[0100] In related technologies, to improve the data transmission rate of the magnetic resonance radio frequency signal receiving link, one way is to establish a high-speed receiving link between the receiving coil and the radio frequency signal conversion module. Another way is to establish a receiving link between the digital signal processing module and the host computer. However, in the above two ways, to ensure many different connection requirements such as a short distance, equal length, good signal integrity, and the use of multiple auxiliary low-speed signals between the radio frequency signal conversion module and the digital signal processing module, the radio frequency signal conversion module and the digital signal processing module are arranged on the same circuit board. During the operation of the magnetic resonance radio frequency signal receiving link, this circuit board has problems such as large size, high power consumption, high heat dissipation requirements, and fixed installation position. If the radio frequency signal conversion module and the digital signal processing module are separately arranged, the distance between them will inevitably change. On the basis of this separate and independent arrangement, how to maintain a communication link with the same performance as that on the same circuit board has become an urgent problem to be solved.

[0101] In view of the above problems, this application provides a long-distance link establishment method for a magnetic resonance radio frequency signal receiving link. After the radio frequency signal conversion module and the digital signal processing module are separately arranged, a link between the radio frequency signal conversion module and the digital signal processing module is established. Next, the long-distance link establishment method for the magnetic resonance radio frequency signal receiving link provided by this application will be introduced.

[0102] The long-distance link establishment method for the magnetic resonance radio frequency signal receiving link provided by the embodiments of this application can be applied to, for example Figure 1In the application environment shown. Figure 1 The application environment includes a receiving link 10, which is used to process the radio frequency signal received by the receiving coil 21 and send the processed radio frequency signal to the host computer 30. The host computer 30 can perform magnetic resonance imaging based on the processed radio frequency signal. The receiving link 10 includes at least one radio frequency signal conversion module 11 and a digital signal processing module 12. Through the cooperation process of the radio frequency signal conversion module 11 and the digital signal processing module 12, the establishment of the magnetic resonance radio frequency signal receiving link is completed.

[0103] In some embodiments of the present application, as Figure 2 shown, a method for remotely establishing a link of a magnetic resonance radio frequency signal receiving link is provided. The method includes the following steps:

[0104] S201, the radio frequency signal conversion module obtains the clock signal output by the digital signal processing module and generates a digital link establishment signal based on the clock signal.

[0105] Among them, the digital link establishment signal refers to a link establishment request for remote link establishment, and this digital link establishment signal is used to request the establishment of a link between the radio frequency signal conversion module and the digital signal processing module.

[0106] Since there are at least one ADC in the radio frequency signal conversion module, the clocks of each ADC may be different. Therefore, before remote link establishment, it is necessary to ensure the clock synchronization of each ADC in the radio frequency signal conversion module.

[0107] During the remote link establishment process, the digital signal processing module can send a clock signal through the internal clock source. The radio frequency signal conversion module can obtain the clock signal output by the internal clock source of the digital signal processing module and synchronize the clocks of multiple ADCs based on this clock signal. When the clocks of multiple ADCs are synchronized, the radio frequency signal conversion module generates a digital link establishment signal and sends this digital link establishment signal to the digital signal processing module to attempt to establish a receiving link.

[0108] S202, generate a link establishment instruction based on the digital link establishment signal.

[0109] In the embodiments of the present application, the radio frequency signal conversion module can generate a link establishment instruction after a preset time interval from the moment when the digital link establishment signal is generated. Or, the digital signal processing module generates a link establishment instruction after receiving the digital link establishment signal sent by the radio frequency signal conversion module.

[0110] S203, generate link establishment data based on the link establishment instruction.

[0111] In the embodiments of the present application, after obtaining the link establishment instruction, the radio frequency signal conversion module may process the radio frequency signal based on the information carried in the link establishment instruction to generate link establishment data. Alternatively, after the radio frequency signal conversion module generates the link establishment instruction, the high-speed digital radio frequency signal generated from the radio frequency signal is used as the link establishment data. The embodiments of the present application do not limit the manner of generating the link establishment data based on the link establishment instruction.

[0112] S204. The digital signal processing module obtains the link establishment data, and identifies the link establishment data and the digital link establishment signal to obtain an identification result.

[0113] In the embodiments of the present application, when the digital signal processing module sequentially obtains the digital link establishment signal and the link establishment data, the digital signal processing module may match the digital link establishment signal and the link establishment data, and determine the identification result according to the matching result. Among them, the matching information used in the matching process may be the parameter information of the digital link establishment signal and the parameter information of the link establishment data. Specifically, if the matching result is that the parameter information of the link establishment data is consistent with the parameter information of the digital link establishment signal, it is determined that the identification result is link establishment failure; if the matching result is that the parameter information of the link establishment data is inconsistent with the parameter information of the digital link establishment signal, it is determined that the identification result is link establishment success.

[0114] Alternatively, the digital signal processing module may also analyze the identification signals of the digital link establishment signal and the link establishment data, determine whether the identification signals of the digital link establishment signal and the link establishment data are consistent, and determine the identification result according to the determination result. The embodiments of the present application do not limit the identification process.

[0115] S205. Complete the establishment of the magnetic resonance radio frequency signal receiving link based on the identification result.

[0116] In the embodiments of the present application, if the identification result is link establishment success, the digital signal processing module may determine that the magnetic resonance radio frequency signal receiving link has been successfully established; if the identification result is link establishment failure, the digital signal processing module may determine that the magnetic resonance radio frequency signal receiving link has not been successfully established, and the establishment of the magnetic resonance radio frequency signal receiving link needs to be performed again.

[0117] The above-mentioned method for establishing a long-distance link in a magnetic resonance radio frequency signal receiving link. The radio frequency signal conversion module obtains the clock signal output by the digital signal processing module, generates a digital link establishment signal based on the clock signal, generates a link establishment instruction based on the digital link establishment signal, generates link establishment data based on the link establishment instruction. The digital signal processing module obtains the link establishment data, identifies the link establishment data and the digital link establishment signal, and obtains the identification result. The establishment of the magnetic resonance radio frequency signal receiving link is completed based on the identification result. In the case where the radio frequency signal conversion module and the digital signal processing module are separately arranged, through the mutual cooperation of the radio frequency signal conversion module and the digital signal processing module, the establishment of the magnetic resonance radio frequency signal receiving link is completed. In this way, the radio frequency signal conversion module and the digital signal processing module can be separately arranged to reduce the size of the receiving link and the power consumption during use, and also solve the problems of high heat dissipation requirements and fixed position. In addition, through data transmission using this receiving link, the integrity of the radio frequency signal during transmission can be guaranteed, and the situation of partial radio frequency signal loss can be avoided.

[0118] Based on the above embodiments, in this embodiment, the specific content of step S201 in the above Figure 2 “The radio frequency signal conversion module obtains the clock signal output by the digital signal processing module, and generates a digital link establishment signal based on the clock signal” is introduced in detail. As a non-limiting embodiment, as Figure 3 shown, the above step S201 includes:

[0119] S301, the radio frequency signal conversion module generates a stable clock signal in response to the clock signal.

[0120] In the embodiments of the present application, the radio frequency signal conversion module further includes a clock distributor and a configurator, and the digital signal processing module further includes a clock transmitter. When the clock distributor in the radio frequency signal conversion module receives the clock signal sent by the clock source in the digital signal processing module, the clock distributor can generate a stable clock signal based on this clock signal, and send this stable clock signal to each ADC to synchronize the clocks of each ADC and ensure the stability of the clocks of each ADC. When the clocks of each ADC are stable, each ADC can work properly.

[0121] It should be noted that before generating a stable clock signal in response to the clock signal, the radio frequency signal conversion module needs to perform initialization configuration on the internal clock distributor and each ADC. The configuration parameters of this initialization configuration process are preset and are automatically configured after the radio frequency signal conversion module is powered on.

[0122] S302, generate a digital link establishment signal based on the stable clock signal.

[0123] In the embodiments of the present application, when the clocks of all ADCs are stable, digital link establishment signals are generated and sent to a signal transmitter. After receiving the link establishment instruction, the signal transmitter sends the link establishment instruction to a digital signal processing module. For example, the digital link establishment signal may be a digital radio frequency signal. When the signal transmitter is a multimode optical module, the digital radio frequency signal output by the ADC can be converted into an optical signal, that is, the optical signal is the digital link establishment signal, and is sent to the digital signal processing module through a multimode optical fiber.

[0124] In the above method for remotely establishing a link in a magnetic resonance radio frequency signal receiving link, a radio frequency signal conversion module generates a stable clock signal in response to a clock signal; and generates a digital link establishment signal based on the stable clock signal. This method can accurately generate a stable clock signal based on the clock signal to synchronize the clocks of the ADCs in the radio frequency signal conversion module. In this way, the situation of poor magnetic resonance image quality caused by clock asynchronization can be avoided. At the same time, a digital link establishment signal can also be generated based on the stable clock signal to start the establishment of the receiving link.

[0125] The above process of establishing the receiving link is a general overview. Figure 4 As shown in the schematic diagram of the receiving link, the receiving link 10 includes a radio frequency signal conversion module 11 and a digital signal processing module 12. The radio frequency signal conversion module 11 is connected to a receiving coil 21, and the digital signal processing module 12 is connected to a host computer 30. The radio frequency signal conversion module 11 in the receiving link 10 includes a plurality of analog signal processors 111 and a plurality of analog-to-digital converters 112. The input end of the radio frequency signal conversion module 11 is connected to the receiving coil 21, the output end of the radio frequency signal conversion module 11 is connected to the input end of the digital signal processing module 12, and the output end of the digital signal processing module 12 is connected to the host computer 30. The radio frequency signal conversion module 11 includes an analog signal processor 111, an analog-to-digital converter 112, a signal transmitter 113, a clock signal receiver 114, a configurator 115, and a clock distributor 116. The digital signal processing module 12 includes a signal receiver 121, a data receiving processor 122, a clock signal transmitter 123, and a clock source 124.

[0126] The process of establishing the receiving link can be achieved by the configurator 115 cooperating with the data receiving processor 122 synchronously or asynchronously. The specific process of the configurator 115 cooperating with the data receiving processor 122 synchronously includes: after the data receiving processor 122 receives the digital link establishment signal, it sends a low-speed link establishment instruction to the configurator 115. The configurator 115 sends a synchronization signal generated based on the link establishment instruction to multiple ADCs, and the multiple ADCs send link establishment data to the data receiving processor 122 based on the synchronization signal. The data receiving processor 122 can determine whether the link establishment is successful based on the digital link establishment signal and the link establishment data. If the link establishment fails, the digital signal processing module resends the link establishment instruction to the configurator 115.

[0127] The specific process of the configurator 115 cooperating with the data receiving processor 122 asynchronously includes: the clock source sends a clock to the configurator 115 and accurately establishes the receiving link according to a pre-agreed time. The configurator 115 detects whether the clock signal is sent to the clock distributor, and according to the pre-agreed time (for example, 20 seconds), after detecting clock synchronization, the configurator 115 sends a link establishment signal to each ADC, and the ADC sends a digital radio frequency signal to the digital signal processing module. If the link establishment fails, the data receiving processor 122 controls the clock signal transmitter to turn off and stop sending the clock to the clock distributor. At this time, the configurator 115 cannot detect the clock signal. In this process, the presence or absence of the clock signal can replace the sending of the link establishment instruction. The configurator 115 and the digital signal processing module can agree on the link establishment time in advance to achieve the establishment of the receiving link.

[0128] Next, a method for establishing a link by the synchronous cooperation between the configurator 115 and the data receiving processor 122 will be introduced.

[0129] Based on the above embodiments, in this embodiment, the specific content of step S202 “generate a link establishment instruction based on the digital link establishment signal” in the above Figure 2 will be introduced in detail. As a non-limiting embodiment, the above step S202 includes:

[0130] The radio frequency signal conversion module obtains the digital link establishment signal and generates a link establishment instruction.

[0131] In the embodiment of the present application, after generating the digital link establishment signal, the radio frequency signal conversion module sends the digital link establishment signal to the digital signal processing module. After receiving the digital link establishment signal, the digital signal processing module generates a link establishment instruction and sends the link establishment instruction to the radio frequency signal conversion module. The radio frequency signal conversion module can obtain the link establishment instruction.

[0132] In the above method for establishing a long-distance link in the magnetic resonance radio frequency signal receiving link, the radio frequency signal conversion module obtains a digital link establishment signal and generates a link establishment instruction. By obtaining the digital link establishment signal and generating the link establishment instruction based on the generated digital link establishment signal, the magnetic resonance radio frequency signal receiving link can be accurately established through the two processes of the link establishment instruction and the digital link establishment signal.

[0133] Based on the above embodiments, this embodiment details the specific content of step S203, "generating link establishment data based on the link establishment instruction" in the above Figure 2 . As a non-limiting embodiment, as Figure 5 shown, the above step S203 includes:

[0134] S401, the radio frequency signal conversion module generates a synchronization signal based on the link establishment instruction.

[0135] Since the number of ADCs in the radio frequency signal conversion module is multiple, while the number of configurators is one. Therefore, after the configurator obtains the link establishment instruction, it parses the link establishment instruction and uses the parsed link establishment instruction as the synchronization signal. The number of synchronization signals is the same as the number of ADCs, that is, one synchronization signal is input into one ADC.

[0136] S402, and adjusts the parameters of the data to be output based on the synchronization signal to obtain link establishment data.

[0137] Among them, the parameters of the data to be output include at least one of data format, data phase, and data transmission protocol. The data transmission protocol refers to the digital protocol carried on the signal transmitter in the radio frequency signal conversion module.

[0138] In the embodiments of the present application, for any one synchronization signal, the ADC corresponding to the synchronization signal can adjust the data format and / or data phase of the digital radio frequency signal based on the synchronization signal. And convert the adjusted digital radio frequency signal into a digital protocol signal based on the digital protocol carried on the signal transmitter, and determine the digital protocol signal as the link establishment data and send it to the signal transmitter.

[0139] In the above method for establishing a long-distance link in the magnetic resonance radio frequency signal receiving link, the radio frequency signal conversion module generates a synchronization signal based on the link establishment instruction; and adjusts the parameters of the data to be output based on the synchronization signal to obtain link establishment data. This method is convenient for synchronizing the instructions of each ADC in the radio frequency signal conversion module by generating a synchronization signal from the link establishment instruction, and then adjusts the parameters of the data to be output based on the synchronization signal, so that the obtained link establishment data can meet the requirements of the link establishment process.

[0140] Based on the above embodiments, this embodiment details the above Figure 5The specific content of step S402 "Adjust the parameters of the data to be output based on the synchronization signal" in [the above] is introduced in detail. As a non-limiting embodiment, the above step S402 includes:

[0141] In response to the digital protocol carried on the signal transmitter in the radio frequency signal conversion module, adjust the format and / or phase of the data to be output.

[0142] In the embodiment of the present application, the configurator in the radio frequency signal conversion module obtains the digital protocol on the signal transmitter and determines whether the digital protocol is a preset protocol. If the digital protocol is a preset protocol, the synchronization signal generated by the configurator carries adjustment information of the format and / or phase. After the ADC obtains the synchronization signal, based on the synchronization signal, it adjusts the format and / or phase of the data to be output, and uses the adjusted data as the link establishment data. For example, the preset protocol may be a Low-Voltage Differential Signaling (LVDS) protocol.

[0143] In the above method for establishing a long-distance link of a magnetic resonance radio frequency signal receiving link, in response to the digital protocol carried on the signal transmitter in the radio frequency signal conversion module, adjust the format and / or phase of the data to be output. This method adjusts the format and / or phase of the data to be output based on the digital protocol on the signal transmitter, so that the difference between the link establishment data and the digital link establishment signal is relatively large. In this way, the digital signal processing module can quickly and accurately obtain the recognition result.

[0144] Based on the above embodiment, this embodiment details the specific content of the above Figure 2 step S205 "Complete the establishment of the magnetic resonance radio frequency signal receiving link based on the recognition result". As a non-limiting embodiment, as Figure 6 shown, the above step S205 includes:

[0145] S501, in response to the recognition result being link establishment failure.

[0146] In the embodiment of the present application, when the digital signal processing module determines that the recognition result is link establishment failure, it means that the establishment of the magnetic resonance radio frequency signal receiving link has not been completed. At this time, the digital signal processing module resends a low-speed link establishment instruction to the configurator in the radio frequency signal conversion module. After the configurator receives the low-speed link establishment instruction, it can determine that the recognition result is link establishment failure.

[0147] S502, control the radio frequency signal conversion module to re-obtain the link establishment instruction, update the link establishment data, and re-obtain the recognition result until the re-obtained recognition result is link establishment success.

[0148] In an embodiment of the present application, when the configurator determines that the recognition result is a link establishment failure, the configurator may generate a synchronization signal according to a new link establishment instruction and send the synchronization signal to multiple ADCs. Based on the synchronization signal, the multiple ADCs readjust the format and / or phase of the data to be output, and convert the adjusted data to be output into new link establishment data according to the digital protocol. Then, the new link establishment data is sent to the data receiving processor, and the data receiving processor determines the recognition result again. If the recognition result is a successful link establishment, the establishment of the data link is completed. If the recognition result is still a link establishment failure, the content of step S501 and step S502 is continued to be repeated.

[0149] In the above method for long-distance link establishment of the magnetic resonance radio frequency signal receiving link, in response to the recognition result being a link establishment failure; the radio frequency signal conversion module is controlled to re-obtain the link establishment instruction, update the link establishment data, and re-obtain the recognition result until the re-obtained recognition result is a successful link establishment. In the case of a link establishment failure, the link establishment data is updated according to the re-obtained link establishment instruction, so that the difference between the link establishment data and the digital link establishment signal is large. Through continuous iteration, the established receiving link can be accurately obtained.

[0150] Next, the method of synchronously cooperating with the data receiving processor 122 through the configurator 115 to establish a link is summarized.

[0151] Figure 7a and Figure 7b FIG. is a schematic diagram of a receiving link. Taking the signal transmitter 113 as the multimode optical module 113, the configurator 115 as the custom digital integrated circuit (Complex Programmable Logic Device, CPLD) 115, the clock distributor 116 as the clock fan-out buffer, and the data receiving and processing module 122 as the programmable gate array (Field Programmable Gate Array, FPGA) as an example for illustration. After the radio frequency signal conversion module 11 is powered on, the CPLD first initializes and configures the clock fan-out chip and the ADC. At this time, the clock source 124 of the digital signal processing module 12 has transmitted the clock to the clock fan-out buffer over a long distance using a radio frequency cable. In the case of the completion of the initialization configuration and the existence of the clock transmitted over a long distance, the establishment of the receiving link is carried out.

[0152] During the establishment process of the receiving link, after the ADC generates a digital link establishment signal based on the clock signal, it sends the digital link establishment signal to the multimode optical module, and the multimode optical module sends the digital link establishment signal to the FPGA. After the FPGA recognizes the digital link establishment signal, it sends a low-speed link establishment instruction to the CPLD, and this link establishment instruction is transmitted to the CPLD. After the CPLD receives the link establishment instruction, it parses the link establishment instruction to obtain a synchronization signal and sends the synchronization signal to each ADC. Each ADC adjusts the format and / or phase of the output digital radio frequency signal, converts the adjusted digital radio frequency signal into link establishment data, and sends the link establishment data to the FPGA through the multimode optical module. When the FPGA recognizes that the parameter information of the link establishment data is different from that of the digital link establishment signal, it determines that the receiving link establishment is successful. If the FPGA recognizes that the parameter information of the link establishment data is the same as that of the digital link establishment signal, it determines that the receiving link establishment fails. If the receiving link establishment fails, re-link establishment is required, and the FPGA will send a low-speed link establishment instruction to the CPLD again to restart the receiving link establishment process.

[0153] After the establishment of the receiving link is completed, the radio frequency signal conversion module 11 and the digital signal processing module 12 maintain a wireless communication state. The FPGA can discard invalid digital radio frequency signals according to the instructions of the host computer 30 and send the remaining digital radio frequency signals to the host computer 30. After the establishment of the receiving link is completed and before using the receiving link to transmit signals, the host computer 30 sends an instruction to the FPGA. After the FPGA receives the instruction, it parses and encapsulates the instruction and sends a secondary instruction to the CPLD of the radio frequency signal conversion module. After the CPLD receives the secondary instruction, it parses the secondary modification instruction and controls the analog signal processor 111 in the radio frequency signal conversion module 11 to perform operations such as amplification, filtering, or mixing.

[0154] In the process of receiving a radio frequency signal using the receiving link, taking the digital protocol as the LVDS protocol as an example for illustration, the analog signal processor 111 performs preprocessing operations such as amplification, filtering, or mixing on the analog radio frequency signal received by the receiving coil 21 according to the secondary instructions of the CPLD. Each path of the preprocessed analog radio frequency signal is transmitted to the ADC, and the ADC converts the analog radio frequency signal into a digital LVDS protocol signal. The multimode optical module converts the digital LVDS protocol signal into a multimode optical signal, which is transmitted over a long distance through a multimode optical fiber to the digital signal processing module. The multimode optical module in the digital signal processing module 12 reconverts the multimode optical signal into an LVDS protocol signal and transmits it to the high-speed digital interface of the FPGA. After the FPGA analyzes and obtains the digital radio frequency signal according to the LVDS protocol, it filters, frequency-converts, and compresses and packages the digital radio frequency signal, and then uploads it to the host computer 30. The host computer 30 performs data processing and generates magnetic resonance images. It should be noted that all the ADCs use the clock sent by the same clock source 124, and this clock can be transmitted through a radio frequency cable.

[0155] Figure 8 It is a flowchart of a method for establishing a receiving link. The method includes: S601: The data integrated circuit initializes and configures the clock fan-out chip and the ADC; S602, the clock fan-out chip receives the clock sent by the clock source, outputs a stable clock to multiple ADCs, the ADCs work normally, and send the generated digital link establishment signal to the multimode optical module; S603, the multimode optical module sends the digital link establishment signal to the digital signal processing module; S604, receives the data link establishment instruction sent by the digital signal processing module; S605: The ADC adjusts the format and / or phase of the digital radio frequency signal, and sends the adjusted radio frequency signal as link establishment data to the multimode optical module, and the multimode optical module sends the link establishment data to the digital signal processing module; S606: If the recognition result of the digital signal processing module is successful in establishing the link, the establishment of the magnetic resonance radio frequency signal receiving link is completed; S607: If the recognition result of the digital signal processing module is a failure in establishing the link, in response to the recognition result of a failure in establishing the link; control the radio frequency signal conversion module to re-obtain the link establishment instruction, update the link establishment data, re-obtain the recognition result, until the re-obtained recognition result is successful in establishing the link.

[0156] Figure 9Schematic flow diagram of a receiving link establishment method, the method comprising: S701: A digital integrated circuit initializes and configures a clock fan-out chip and a plurality of analog-to-digital converters; S702: A clock source transmits a clock signal over a long distance using a radio frequency cable; S703: The clock fan-out chip outputs a stable clock, and the plurality of analog-to-digital converters operate normally; S704: The plurality of analog-to-digital converters send high-speed digital link establishment signals to a multimode optical module to attempt to establish a link; S705: The multimode optical module sends an optical signal through an optical fiber, and the optical signal is a digital link establishment signal; S706: The multimode optical module receives the optical signal and converts the optical signal into a digital link establishment signal; S707: A programmable gate array receives the digital link establishment signal; S708: The programmable gate array issues a low-speed link establishment instruction; S709: The digital integrated circuit receives the link establishment instruction and generates a synchronization signal to send to the plurality of analog-to-digital converters; S710: The plurality of analog-to-digital converters modify the format and / or phase of the digital radio frequency signal based on the synchronization signal to obtain link establishment data; S711: The multimode optical module sends an optical signal through an optical fiber, and the optical signal is the link establishment data; S712: The multimode optical module receives the optical signal and parses to obtain the link establishment data; S713: The programmable gate array determines that the recognition result is successful in establishing a link, and the link establishment is completed; S714: The programmable gate array determines that the recognition result is a failure in establishing a link, restarts the link establishment process, and starts over from S708 to establish a link.

[0157] Next, a method of establishing a link by asynchronously cooperating a configurator 115 and a data receiving processor 122 will be introduced.

[0158] Based on the above embodiments, in this embodiment, for the above Figure 2 specific content of step S202 "generating a link establishment instruction based on a digital link establishment signal" in is introduced in detail. As a non-limiting embodiment, as Figure 10 shown, the above step S202 includes:

[0159] S801, when the radio frequency signal conversion module generates a digital link establishment signal, start timing for a first preset duration synchronously.

[0160] In an embodiment of the present application, when the clock distributor is a phase-locked loop, in the case of stable clock, when the phase-locked loop locks successfully, after the configurator receives the clock lock signal sent by the phase-locked loop, start timing according to a preset first preset duration in advance. For example, the first preset duration may be 20 seconds.

[0161] S802, when the digital signal processing module acquires the digital link establishment signal, start timing for a second preset duration synchronously.

[0162] In an embodiment of the present application, after the radio frequency signal conversion module generates a digital link establishment signal, the digital link establishment signal is sent to the digital signal processing module. After receiving the digital link establishment signal, the digital signal processing module starts timing according to a preset second preset duration. For example, the second preset duration can be 10 seconds.

[0163] S803. In response to the arrival of the first preset duration, the radio frequency signal conversion module generates a first link establishment instruction.

[0164] In an embodiment of the present application, when the radio frequency signal conversion module generates a digital link establishment signal and then intervals for the first preset duration, the configurator can directly generate a first link establishment instruction and send the first link establishment instruction to the ADC to instruct the ADC to generate link establishment data.

[0165] S804. In response to the arrival of the second preset duration, the digital signal processing module generates a second link establishment instruction.

[0166] Wherein, the first link establishment instruction and the second link establishment instruction are mutually matching link establishment instructions.

[0167] In an embodiment of the present application, when the digital signal processing module generates a digital link establishment signal and then intervals for the second preset duration, the digital signal processing module can directly generate a second link establishment instruction. The first link establishment instruction and the second link establishment instruction are both instructions generated during the same link establishment period. The difference is that the two instructions are respectively generated in the radio frequency signal conversion module and the digital signal processing module, that is, the link establishment instructions are generated asynchronously.

[0168] In the above long-distance link establishment method for the magnetic resonance radio frequency signal receiving link, when the digital signal processing module acquires the digital link establishment signal, it synchronously starts timing for the second preset duration; in response to the arrival of the first preset duration, the radio frequency signal conversion module generates a first link establishment instruction; in response to the arrival of the second preset duration, the digital signal processing module generates a second link establishment instruction, wherein the first link establishment instruction and the second link establishment instruction are mutually matching link establishment instructions. Based on the preset timing duration, two mutually matching link establishment instructions are generated on both sides of the radio frequency signal conversion module and the digital signal processing module respectively. In this way, the radio frequency signal conversion module does not need to wait for the feedback signal of the digital signal processing module, reducing the waiting time and improving the establishment efficiency of the receiving link.

[0169] On the basis of the above embodiment, this embodiment details the specific content of step S205 "complete the establishment of the magnetic resonance radio frequency signal receiving link based on the recognition result" in the above Figure 2 As a non-limiting embodiment, as Figure 11 shown, the above step S205 includes:

[0170] S901. In response to the recognition result being link establishment failure.

[0171] In an embodiment of the present application, when the recognition result is that the link establishment fails, the data receiving processor turns off the clock transmitter, and the clock signal sent by the clock source cannot be transmitted to the clock distributor. After a preset time interval, the data receiving processor turns on the clock transmitter. At this time, the clock signal sent by the clock source can be transmitted to the clock distributor.

[0172] S902, the radio frequency signal conversion module re-obtains the clock signal to generate a new digital link establishment signal.

[0173] In an embodiment of the present application, when the clock distributor in the radio frequency signal conversion module does not receive a clock signal for a period of time and receives the clock signal from the clock source at a certain moment, it generates a stable clock signal based on the clock signal and sends the stable clock signal to each ADC. After the clocks of each ADC are synchronized, a new digital link establishment signal can be generated.

[0174] S903, generate a new link establishment instruction based on the new digital link establishment signal, and update the link establishment data based on the new establishment instruction.

[0175] In an embodiment of the present application, the radio frequency signal conversion module can generate a new link establishment instruction after a first preset time interval from the moment when the digital link establishment signal is generated. The configurator can generate a new synchronization signal based on the new link establishment instruction, update the link establishment data according to the new synchronization signal, and send the updated link establishment data to the signal transmitter. The signal transmitter can send the updated link establishment data to the digital signal processing module.

[0176] S904, the digital signal processing module re-obtains the recognition result based on the updated link establishment data until the re-obtained recognition result is that the link establishment is successful.

[0177] In an embodiment of the present application, when the digital signal processing module receives the updated link establishment data, it recognizes the updated link establishment data and the new digital link establishment signal, determines whether the receiving link is successfully established according to the recognition result. If the link establishment is successful, the establishment of the magnetic resonance radio frequency signal receiving link is completed. If the link establishment fails, the content of steps S901 to S904 is executed.

[0178] In the above method for establishing a long-distance link in the magnetic resonance radio frequency signal receiving link, in response to the recognition result being a link establishment failure, the radio frequency signal conversion module re-obtains a clock signal to generate a new digital link establishment signal, generates a new link establishment instruction based on the new digital link establishment signal, updates the link establishment data based on the new establishment instruction, and the digital signal processing module re-obtains the recognition result based on the updated link establishment data until the re-obtained recognition result is a successful link establishment. This method re-generates a new digital link establishment signal and new link establishment data based on the clock signal in the case of a link establishment failure, so that the accuracy of repeated link establishment can be improved, and multiple repeated link establishments can be avoided to improve the link establishment efficiency.

[0179] Next, a summary is made of the method of establishing a link through the asynchronous cooperation of the configurator 115 and the data receiving processor 122.

[0180] Figure 12a and Figure 12b Taking the schematic diagram of the receiving link as an example, the signal transmitter 113 is a millimeter wave transmitting module, the configurator 115 is a microcontroller (Microcontroller Unit, MCU), the clock distributor 116 is a phase-locked loop, and the data receiving and processing module 122 is a system-on-a-chip (System-on-a-Chip, SOC).

[0181] After the radio frequency signal conversion module is powered on, the MCU initializes and configures the phase-locked loop and the ADC. At this time, the clock source 124 of the digital signal processing module 12 has wirelessly transmitted the clock signal over a long distance using the laser transmitting module. In the presence of the initialization configuration and the clock transmitted over a long distance, the phase-locked loop successfully locks and outputs a stable clock. The phase-locked loop transmits the signal of the locked clock to the MCU to establish the receiving link.

[0182] During the establishment of the receiving link, taking the digital protocol JESD204B protocol as an example, the MCU sends a high-speed digital link establishment signal to the millimeter-wave transmitter according to the requirements of the JESD204B protocol, so as to send the digital link establishment signal to the SOC through the millimeter-wave transmitter. After receiving the digital link establishment signal, the SOC starts timing. When the timing duration reaches the second preset duration, according to the requirements of the JESD204B protocol, it sends a synchronization signal to the JESD204B receiving module inside the SOC as a link establishment instruction. At the same time, after the MCU receives the clock lock signal sent by the phase-locked loop, it starts timing. When the timing duration reaches the first preset duration, according to the requirements of the JESD204B protocol, it sends a synchronization signal to the JESD204B receiving module inside the ADC as a link establishment instruction. The ADC generates link establishment data after receiving this link establishment instruction, and sends the link establishment data to the millimeter-wave transmitter, and the millimeter-wave transmitter sends the link establishment data to the SOC. After the SOC receives the link establishment data, it identifies the link establishment data and the digital link establishment signal to determine whether the link establishment is successful. If the link establishment is successful, the establishment of the magnetic resonance radio frequency signal receiving link is completed; if the link establishment fails, it re-obtains the clock signal to generate a new digital link establishment signal; generates a new link establishment instruction based on the new digital link establishment signal, updates the link establishment data based on the new establishment instruction; the digital signal processing module re-obtains the recognition result based on the updated link establishment data until the re-obtained recognition result is successful link establishment.

[0183] After the establishment of the receiving link is completed, a wireless communication state is maintained between the radio frequency signal conversion module 11 and the digital signal processing module 12. The SOC can discard invalid digital radio frequency signals according to the instructions of the host computer 30 and send the remaining digital radio frequency signals to the host computer 30. After the establishment of the receiving link is completed and before using the receiving link to transmit signals, the host computer 30 sends an instruction to the SOC. After receiving the instruction, the SOC parses and encapsulates the instruction and issues a secondary instruction to the MCU of the radio frequency signal conversion module 11. After receiving the secondary instruction, the MCU parses the secondary modification instruction and controls the analog signal processor 111 in the radio frequency signal conversion module 11 to perform operations such as amplification, filtering, or mixing.

[0184] In the process of using the receiving link to transmit signals, the analog signal processor 111 performs preprocessing operations such as amplification, filtering or mixing on the analog RF signal collected by the receiving coil 21 according to the secondary instructions of the MCU, and each preprocessed analog RF signal is transmitted to the ADC, and the ADC converts the analog RF signal into a JESD204B digital protocol signal. The millimeter wave transmitting module converts the JESD204B digital protocol signal into a millimeter wave frequency band, and transmits the millimeter wave frequency band to the digital signal processing module. The millimeter wave receiving module in the digital signal processing module 12 reconverts the millimeter wave frequency band into a JESD204B digital protocol signal and transmits it to the high-speed digital interface of the SOC. After the SOC obtains the digital RF signal according to the JESD204B digital protocol, it filters, converts the frequency, compresses and packages the digital RF signal, and uploads it to the host computer 30. The host computer 30 performs data processing and generates magnetic resonance images.

[0185] Figure 13 The schematic diagram of the receiving link establishment process includes: S1001, the microcontroller initializes and configures the phase-locked loop and the ADC; S1002, the phase-locked loop receives the clock sent by the clock source, outputs a stable clock to multiple ADCs, the ADC works normally, and sends the generated digital link establishment signal to the millimeter wave sending module; S1003: the millimeter wave sending module sends a digital link establishment signal to the digital signal processing module; S1004: after receiving the clock lock signal, the configurator starts the timing of the first preset time, and after the first preset time is reached, the millimeter wave sending module sends the link establishment data to the digital signal processing module; S1005, the digital signal processing module identifies the link establishment data and the digital link establishment signal to determine whether the receiving link is successfully established; S1006: if the recognition result is successful establishment, the establishment of the magnetic resonance radio frequency signal receiving link is completed; S1007: if the recognition result is failure to establish, the clock signal is re-acquired, the link establishment data is updated, and the recognition result is re-acquired until the re-acquired recognition result is successful link establishment.

[0186] Figure 14Schematic diagram of the receiving link establishment process, which includes: S1101: The microcontroller initializes and configures the phase-locked loop and multiple analog-to-digital converters; S1102: The clock source transmits the clock over a long distance; S1103: The phase-locked loop locks and outputs a stable clock, and multiple analog-to-digital converters operate normally; S1104: Multiple analog-to-digital converters send high-speed digital link establishment signals to the millimeter-wave transmission module, and the microcontroller synchronizes the timing; S1105: The millimeter-wave transmission module sends a signal through a medium or an antenna, and this signal is the digital link establishment signal; S1106: The millimeter-wave receiving module receives the signal and converts it into a digital link establishment signal; S1107: The system-on-chip receives the digital link establishment signal, starts timing, and after the timing reaches the second preset duration, sends a link establishment instruction; S1108: After the microcontroller's timing reaches the first preset duration, it sends a link establishment instruction to multiple analog-to-digital converters; S1109: Multiple analog-to-digital converters send link establishment data generated based on the link establishment instruction to the millimeter-wave transmission module; S1110: The millimeter-wave transmission module sends a signal through a medium or an antenna, and this signal is the link establishment data; S1111: The millimeter-wave receiving module receives the signal and converts it into link establishment data; S1112: The system-on-chip determines that the recognition result is successful link establishment, and the link establishment is completed; S1113: The system-on-chip determines that the recognition result is failed link establishment, and restarts the link establishment process.

[0187] It should be understood that although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least some of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same moment, but can be executed at different moments. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0188] In some embodiments of the present application, as Figure 15 shown, a magnetic resonance radio frequency signal receiving link 10 is provided. This receiving link 10 is used to receive and / or process radio frequency signals generated by a magnetic resonance imaging device 20;

[0189] The receiving link 10 includes at least one radio frequency signal conversion module 11 and a digital signal processing module 12. At least one radio frequency signal conversion module 11 and the digital signal processing module 12 are independently arranged in the magnetic resonance imaging device 20;

[0190] At least one radio frequency signal conversion module 11 and the digital signal processing module 12 are connected in a wireless or wired manner.

[0191] In an embodiment of the present application, one side of the magnetic resonance radio frequency signal receiving link 10 is connected to a receiving coil, and the other side is connected to a host computer. The magnetic resonance radio frequency signal receiving link 10 is configured to receive radio frequency signals from the receiving coil in the magnetic resonance imaging device 20 and transmit the radio frequency signals to the host computer.

[0192] During the process of establishing the receiving link or re - establishing the receiving link after it is disconnected, it is necessary to configure the radio frequency signal conversion module 11 in the receiving link 10. At other times after the link establishment is completed, the radio frequency signal conversion module 11 and the digital signal processing module 12 remain connected.

[0193] Based on the establishment of the receiving link, Figure 16 FIG. 12 is a schematic diagram of the application process of the receiving link. The application process includes: S1201, the radio frequency signal conversion module obtains the analog radio frequency signal received by the receiving coil; S1202, the analog radio frequency signal is amplified, filtered, frequency - converted, etc. by an analog signal processor; S1203, the analog radio frequency signal after the operation is converted into a digital radio frequency signal by an ADC, and based on the digital protocol carried on the signal transmitter, the digital radio frequency signal is converted into link - establishment data; S1204, the link - establishment data is sent to the digital signal processing module by the signal transmitter; S1205, the digital signal processing module analyzes the link - establishment data to obtain a digital radio frequency signal, processes and packages the digital radio frequency signal, and uploads it to the host computer. After receiving the digital radio frequency signal, the host computer generates a magnetic resonance image.

[0194] In the actual application process of the receiving link, both the radio frequency signal conversion module 11 and the digital signal processing module 12 are used to process radio frequency signals. Among them, the radio frequency signal conversion module 11 converts the analog radio frequency signal received by the receiving coil into a digital radio frequency signal and transmits the digital radio frequency signal to the digital signal processing module 12. The digital signal processing module 12 further processes the digital radio frequency signal and sends the processed radio frequency signal to the host computer. For example, the processing methods can be filtering, frequency conversion, up - down conversion, decimation, interpolation, combination, parsing, and compression, etc.

[0195] The number of the radio frequency signal conversion modules 11 in the receiving link 10 can be one or multiple. And the number of the digital signal processing modules 12 is only one. When the number of the radio frequency signal conversion modules 11 is multiple, the multiple radio frequency signal conversion modules 11 are all connected to the digital signal processing module 12. That is to say, there is a link between each radio frequency signal conversion module 11 and the digital signal processing module 12.

[0196] For any radio frequency signal conversion module 11, it can be connected to the digital signal processing module 12 by wired means such as a cable, or can be connected to the digital signal processing module 12 by wireless means such as millimeter wave or optical signal. This embodiment does not limit the connection manner between the radio frequency signal conversion module 11 and the digital signal processing module 12.

[0197] When the radio frequency signal conversion module 11 and the digital signal processing module 12 are arranged on the same circuit board, since the distance between the radio frequency signal conversion module 11 and the receiving coil or the hospital bed is relatively far, the radio frequency signal conversion module 11 and the receiving coil or the hospital bed are connected by a cable, and the cable will affect the radio frequency signal output by the magnetic resonance imaging device, thereby affecting the quality of the magnetic resonance image. The radio frequency signal conversion module 11 and the digital signal processing module 12 are independently arranged, and the two modules are connected by wireless means, so that at least one cable between the radio frequency signal conversion module 11 and the receiving coil can be removed, avoiding the influence of the cable on the nuclear magnetic resonance signal, improving the quality of the magnetic resonance image, and at the same time reducing the hardware cost of the nuclear magnetic resonance imaging device.

[0198] The above-mentioned magnetic resonance radio frequency signal receiving link is used to receive and / or process the radio frequency signal generated by the magnetic resonance imaging device; the receiving link includes at least one radio frequency signal conversion module and a digital signal processing module, and at least one radio frequency signal conversion module and the digital signal processing module are independently arranged in the magnetic resonance imaging device; at least one radio frequency signal conversion module and the digital signal processing module are connected by wireless or wired means. In this receiving link, at least one radio frequency signal conversion module and the digital signal processing module are independently arranged, and the two modules are connected by wireless or wired means, avoiding the two modules being on the same circuit board. On the one hand, the size of the circuit board can be reduced, and on the other hand, the power consumption on the circuit board can be reduced. In this way, the placement of each module in the receiving link can be made more flexible.

[0199] In some embodiments of the present application, as Figure 17 shown, each radio frequency signal conversion module 11 includes at least one analog signal processor 111, at least one analog-to-digital converter 112 and a signal transmitter 113. The analog signal processors 111 are connected to the analog-to-digital converters 112 in one-to-one correspondence, and each analog-to-digital converter 112 is connected to the signal transmitter 113;

[0200] Each analog signal processor 111 is used to preprocess the analog radio frequency signal received by the receiving coil 21 and send the preprocessed analog radio frequency signal to the corresponding analog-to-digital converter 112;

[0201] Each analog-to-digital converter 112 is used to convert the preprocessed analog radio frequency signal into a digital radio frequency signal, and / or convert the digital radio frequency signal into corresponding link establishment data based on the digital protocol carried on the signal transmitter 111, and send the link establishment data to the signal transmitter 113;

[0202] The signal transmitter 113 is used to send the link establishment data to the digital signal processing module 12.

[0203] In the embodiment of the present application, the preprocessing methods include operations such as amplification, filtering, or mixing. That is to say, the analog signal processor 111 is used to perform operations such as amplification, filtering, or mixing on the analog radio frequency signal sent by the receiving coil 23.

[0204] The analog-to-digital converter 112 can be a single-channel ADC, a multi-channel ADC, or an ADC integrated with digital signal processing functions. The ADC integrated with digital signal processing functions can perform operations such as filtering, frequency conversion, up and down conversion, decimation, interpolation, and combination on the digital radio frequency signal. The data output of the analog-to-digital converter 112 can use a high-speed data transmission protocol. For example, the high-speed data transmission protocol can be the Peripheral Component Interconnect Express (PCIE), JESD204B, LVDS, or a self-built high-speed protocol, etc.

[0205] The signal transmitter 113 can be a high-frequency long-distance coaxial cable, an optical module, an up-conversion radio frequency module with a frequency higher than the imaging frequency band, etc. Taking the signal transmitter 113 as an optical module as an example, the optical module includes a single-mode optical module for docking with an optical fiber, a multi-mode optical module for docking with an optical fiber, a single-mode optical module for docking with free space optical transmission, and a multi-mode optical module for docking with free space optical transmission, etc. Taking the signal transmitter 13 as an up-conversion radio frequency module as an example, the up-conversion radio frequency module includes, but is not limited to, radio frequency modules with carriers of 800 megahertz (MHz), 1 gigahertz (GHz), 2.4 GHz, 5.1 GHz, 5.8 GHz, 10 GHz, 24 GHz, 60 GHz, 67 GHz, 70 GHz, or 120 GHz, etc.

[0206] In the above receiving link, each radio frequency signal conversion module includes at least one analog signal processor, at least one analog-to-digital converter, and a signal transmitter. The analog signal processors are connected to the analog-to-digital converters in a one-to-one correspondence, and each analog-to-digital converter is connected to the signal transmitter. Each analog signal processor is configured to preprocess the analog radio frequency signal received by the receiving coil and send the preprocessed analog radio frequency signal to the corresponding analog-to-digital converter. Each analog-to-digital converter is configured to convert the preprocessed analog radio frequency signal into a digital radio frequency signal, and / or convert the digital radio frequency signal into corresponding link establishment data based on the digital protocol carried on the signal transmitter, and send the link establishment data to the signal transmitter. The signal transmitter is configured to send the link establishment data to the digital signal processing module. This receiving link details the specific devices in the radio frequency signal conversion module. Each device independently performs different functions and cooperates with each other to achieve the fast transmission of radio frequency signals.

[0207] In some embodiments of the present application, as Figure 18 shown, the digital signal processing module 12 includes a signal receiver 121 and a data receiving processor 122, and the signal receiver 121 is connected to the data receiving processor 122;

[0208] The signal receiver 121 is configured to receive the link establishment data sent by the radio frequency signal conversion module 11 and send the link establishment data to the data receiving processor 122;

[0209] The data receiving processor 122 is configured to parse and process the link establishment data and send the digital radio frequency signal corresponding to the link establishment data to the host computer 30.

[0210] In the embodiments of the present application, the signal receiver 121 in the digital signal processing module 12 is the same as the signal transmitter 113, and it can be a long-distance coaxial cable, an optical module, or an up-conversion radio frequency module with a frequency higher than the imaging frequency band, etc. Taking the signal receiver 121 as an optical module as an example, the optical module includes a single-mode optical module for docking with optical fibers, a multi-mode optical module for docking with optical fibers, a single-mode optical module for docking with free-space optical transmission, and a multi-mode optical module for docking with free-space optical transmission, etc. Taking the signal receiver as an up-conversion radio frequency module as an example, the up-conversion radio frequency module includes, but is not limited to, radio frequency modules with carriers of 800 MHz, 1 GHz, 2.4 GHz, 5.1 GHz, 5.8 GHz, 10 GHz, 24 GHz, 60 GHz, 67 GHz, 70 GHz, or 120 GHz, etc.

[0211] The data receiving processor 122 can be an FPGA, CPLD, MCU, SOC, etc. The data receiving processor 122 has a high-speed data interface and uses a compatible high-speed data transmission protocol with the analog-to-digital converter 112 in the radio frequency signal conversion module 11. For example, the high-speed data transmission protocol can be PCIe, JESD204B, LVDS, or a self-built high-speed protocol, etc.

[0212] It should be noted that the data receiving processor 122 can use the presence or absence of a clock signal or send an instruction signal to the radio frequency signal conversion module 11 to establish a long-distance radio frequency signal receiving link between the radio frequency signal conversion module 11 and the digital signal processing module 12.

[0213] In the above receiving link, the digital signal processing module includes a signal receiver and a data receiving processor, and the signal receiver is connected to the data receiving processor; the signal receiver is used to receive the link establishment data sent by the radio frequency signal conversion module and send the link establishment data to the data receiving processor; the data receiving processor is used to parse and process the link establishment data and send the digital radio frequency signal corresponding to the link establishment data to the host computer. The digital signal processing module in this receiving link includes two parts, and the two parts are respectively used for different functions, and can realize the processing of the digital radio frequency signal in the digital signal processing module. The digital radio frequency signal sent to the host computer is a processed signal. In this way, the quality of the magnetic resonance image can be further improved.

[0214] In some embodiments of the present application, as Figure 19 shown, each radio frequency signal conversion module 11 is dispersedly arranged on the hospital bed 201 of the magnetic resonance imaging device 20, and the digital signal processing module 12 is arranged on the side of the magnet 202 of the magnetic resonance imaging device 20; or,

[0215] At least one radio frequency signal conversion module 11 is integrated in the receiving coil, and the digital signal processing module 12 is arranged on the side of the magnet 202 of the magnetic resonance imaging device 20.

[0216] In Figure 19 , multiple radio frequency signal conversion modules 11 are all arranged on the hospital bed 201 of the magnetic resonance imaging device 20, or, the radio frequency signal conversion module 11 with low power consumption and small size can also be integrated inside the receiving coil 21. In this way, the pressure on the heat dissipation and size of the circuit board can be eliminated, and the requirement for chip integration is reduced. In addition, by arranging the digital signal processing module 12 with high power consumption and large size on the side of the magnet 202, heat dissipation can be carried out by means of air cooling, water cooling, etc., and the processing efficiency of the digital signal processing module 12 can be improved. Figure 20 is a distribution diagram of the radio frequency signal conversion module on the hospital bed. From Figure 20As can be seen, the radio frequency signal conversion module 11 is disposed in the hospital bed 201 of the magnetic resonance imaging device 20 and is dispersedly arranged in the hospital bed 201 of the magnetic resonance imaging device 20.

[0217] In the above receiving link, each radio frequency signal conversion module is dispersedly arranged on the hospital bed of the magnetic resonance imaging device, and the digital signal processing module is arranged on the magnet side of the magnetic resonance imaging device; or, at least one radio frequency signal conversion module is integrated in the receiving coil, and the digital signal processing module is arranged on the magnet side of the magnetic resonance imaging device. The radio frequency signal conversion module and the digital signal processing module in this receiving link are dispersedly arranged at different positions of the magnetic resonance imaging device, which can realize the flexible positioning of each device in the receiving link. At the same time, heavy cables can also be removed to avoid the influence of the cables on the nuclear magnetic resonance signal. In addition, the hardware cost of the magnetic resonance imaging device is also reduced.

[0218] In some embodiments of the present application, the data receiving processor 122 is further configured to modify the parameters of the processing process according to the modification instruction sent by the host computer 30.

[0219] In the embodiments of the present application, the host computer 30 can send a modification instruction to the data receiving processor 122 in a wireless manner. After receiving the modification instruction, the data receiving processor 122 modifies the parameters in the processing process and transmits the processed digital radio frequency signal to the host computer 30. After receiving the processed digital radio frequency signal, the host computer 30 further processes the digital radio frequency signal to generate a magnetic resonance image.

[0220] Alternatively, the host computer 30 can also send a data screening instruction to the data receiving processor 122. After receiving the data screening instruction, the data receiving processor 122 discards some signals in the digital radio frequency signal and uploads the remaining digital radio frequency signal to the host computer 30. In this way, the data receiving processor 122 does not need to control the state of the radio frequency signal conversion module 11 in real time, simplifies the receiving link, and saves communication media.

[0221] In addition, the host computer 30 can also send an operation modification instruction to the analog signal processor 111 in the radio frequency signal conversion module 11 through the digital signal processing module. After receiving the operation modification instruction, the analog signal processor 111 can modify operations such as amplification, filtering, and mixing.

[0222] The digital signal processing module in this receiving link communicates wirelessly with the host computer. The user can trigger a modification instruction through the host computer to modify the parameters in the processing process, making the parameter modification process of the processing process more flexible and the digital radio frequency signal received by the host computer more accurate.

[0223] In some embodiments of the present application, a magnetic resonance imaging device 20 is provided. The magnetic resonance imaging device 20 includes a magnetic resonance device body 203, a hospital bed 201, a receiving coil (21), and a radio frequency signal receiving link 10. The magnetic resonance device body 203 is annularly formed with a cavity. The hospital bed is used to support the receiving coil, and the receiving coil 21 moves in the cavity following the hospital bed 201. Through this receiving link 10, the radio frequency signal is not affected by cables during transmission, and the quality of the magnetic resonance image output by the magnetic resonance imaging device 20 is better. In addition, a large number of cables are removed from the magnetic resonance imaging device, greatly reducing the hardware cost.

[0224] Based on the same inventive concept, an embodiment of the present application also provides a long-distance link establishment device for a magnetic resonance radio frequency signal receiving link for implementing the above-mentioned long-distance link establishment method for a magnetic resonance radio frequency signal receiving link. The solution provided by this device to solve the problem is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the long-distance link establishment device for a magnetic resonance radio frequency signal receiving link provided below can refer to the limitations on the long-distance link establishment method for a magnetic resonance radio frequency signal receiving link in the above text, and will not be repeated here.

[0225] In some embodiments of the present application, as Figure 21 shown, a long-distance link establishment device for a magnetic resonance radio frequency signal receiving link is provided, including: a signal generation module 11, an instruction generation module 12, a data generation module 13, a result acquisition module 14, and a link establishment module 15, where:

[0226] The signal generation module 11, the radio frequency signal conversion module is used to obtain the clock signal output by the digital signal processing module and generate a digital link establishment signal based on the clock signal;

[0227] The instruction generation module 12 is used to generate a link establishment instruction based on the digital link establishment signal;

[0228] The data generation module 13 is used to generate link establishment data based on the link establishment instruction;

[0229] The result acquisition module 14 is used for the digital signal processing module to obtain the link establishment data, identify the link establishment data and the digital link establishment signal, and obtain an identification result;

[0230] The link establishment module 15 is used to complete the establishment of the magnetic resonance radio frequency signal receiving link based on the identification result.

[0231] In some embodiments of the present application, the above signal generation module 11 includes: a signal response unit and a link establishment signal generation unit, where:

[0232] The signal response unit is used to generate a stable clock signal in response to the clock signal;

[0233] A link establishment signal generation unit, configured to generate a digital link establishment signal based on a stable clock signal.

[0234] In some embodiments of the present application, the above-mentioned instruction generation module 12 includes: an instruction generation unit, where:

[0235] The instruction generation unit is configured to obtain a digital link establishment signal and generate a link establishment instruction.

[0236] In some embodiments of the present application, the above-mentioned data generation module 13 includes: a synchronization signal generation unit and a link establishment data acquisition unit, where:

[0237] The synchronization signal generation unit is configured to generate a synchronization signal based on the link establishment instruction;

[0238] The link establishment data acquisition unit is configured to adjust the parameters of the data to be output based on the synchronization signal to obtain link establishment data.

[0239] In some embodiments of the present application, the above-mentioned link establishment data acquisition unit is further configured to adjust the format and / or phase of the data to be output in response to a digital protocol carried on a signal transmitter in the radio frequency signal conversion module.

[0240] In some embodiments of the present application, the above-mentioned instruction generation module 12 further includes: a first timing unit, a second timing unit, a first instruction generation unit, and a second instruction generation unit, where:

[0241] The first timing unit is configured to synchronously start timing for a first preset duration when the radio frequency signal conversion module generates a digital link establishment signal;

[0242] The second timing unit is configured to synchronously start timing for a second preset duration when the digital signal processing module acquires the digital link establishment signal;

[0243] The first instruction generation unit is configured to generate a first link establishment instruction by the radio frequency signal conversion module in response to the arrival of the first preset duration;

[0244] The second instruction generation unit is configured to generate a second link establishment instruction by the digital signal processing module in response to the arrival of the second preset duration; wherein, the first link establishment instruction and the second link establishment instruction are mutually matching link establishment instructions.

[0245] In some embodiments of the present application, the above-mentioned link establishment module 15 includes: a first response unit and a first update unit, where:

[0246] The first response unit is configured to respond to the recognition result that the link establishment fails;

[0247] A first update unit, configured to control the radio frequency signal conversion module to re-obtain a link establishment instruction, update link establishment data, and re-obtain an identification result until the re-obtained identification result indicates successful link establishment.

[0248] In some embodiments of the present application, the above-mentioned link establishment module 15 includes: a second response unit, a signal re-acquisition unit, a second update unit, and a result acquisition unit, where:

[0249] The second response unit is configured to respond when the identification result indicates failed link establishment;

[0250] The signal re-acquisition unit is configured to cause the radio frequency signal conversion module to re-obtain a clock signal to generate a new digital link establishment signal;

[0251] The second update unit is configured to generate a new link establishment instruction based on the new digital link establishment signal, and update the link establishment data based on the new establishment instruction;

[0252] The result acquisition unit is configured to cause the digital signal processing module to re-obtain an identification result based on the updated link establishment data until the re-obtained identification result indicates successful link establishment.

[0253] Wherein, the identification result indicating failed link establishment means that the parameter information of the link establishment data is consistent with the parameter information of the digital link establishment signal;

[0254] The identification result indicating successful link establishment means that the parameter information of the link establishment data is inconsistent with the parameter information of the digital link establishment signal.

[0255] Each module in the above-mentioned long-distance link establishment device for a magnetic resonance radio frequency signal receiving link can be implemented in whole or in part by software, hardware, and their combination. The above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or stored in a memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above-mentioned modules.

[0256] In some embodiments of the present application, a computer device is provided, including a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, it implements the content of any one of the embodiments of the above-mentioned long-distance link establishment method for a magnetic resonance radio frequency signal receiving link.

[0257] In some embodiments of the present application, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, it implements the content of any one of the embodiments of the above-mentioned long-distance link establishment method for a magnetic resonance radio frequency signal receiving link.

[0258] In some embodiments of the present application, a computer program product is provided, including a computer program which, when executed by a processor, implements the content of any one of the embodiments of the above-mentioned method for establishing a long-distance link in a magnetic resonance radio frequency signal receiving link.

[0259] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or fully authorized by all parties.

[0260] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memories. Non-volatile memories can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memories can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in the present application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in the present application can be general-purpose processors, central processing units, graphics processors, digital signal processing modules, programmable logic devices, data processing logics based on quantum computing, etc., without limitation.

[0261] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, 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, it should be considered as the scope recorded in this specification.

[0262] The above embodiments only express several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A method for establishing a link in a magnetic resonance radio frequency signal receiving link, characterized in that, The method includes: The radio frequency signal conversion module (11) obtains the clock signal output by the digital signal processing module (12), and generates a digital link establishment signal based on the clock signal; Generate a link establishment instruction based on the digital link establishment signal; Generate link establishment data based on the link establishment instruction; The digital signal processing module (12) obtains the link establishment data, and identifies the link establishment data and the digital link establishment signal to obtain an identification result; Complete the establishment of the magnetic resonance radio frequency signal receiving link (10) based on the identification result.

2. The method according to claim 1, characterized in that The radio frequency signal conversion module (11) obtains the clock signal output by the digital signal processing module (12), and generates a digital link establishment signal based on the clock signal, including: The radio frequency signal conversion module (11) generates a stable clock signal in response to the clock signal; Generate the digital link establishment signal based on the stable clock signal.

3. The method according to claim 2, wherein The generating a link establishment instruction based on the digital link establishment signal includes: The radio frequency signal conversion module (11) obtains the digital link establishment signal and generates the link establishment instruction.

4. The method according to claim 3, characterized in that, The generating link establishment data based on the link establishment instruction includes: The radio frequency signal conversion module (11) generates a synchronization signal based on the link establishment instruction; And adjust the parameters of the data to be output based on the synchronization signal to obtain the link establishment data.

5. The method according to claim 4, characterized in that, The adjusting the parameters of the data to be output based on the synchronization signal includes: In response to the digital protocol carried on the signal transmitter (113) in the radio frequency signal conversion module (11), adjust the format and / or phase of the data to be output.

6. The method according to claim 5, characterized in that The completing the establishment of the magnetic resonance radio frequency signal receiving link (10) based on the identification result includes: In response to the identification result being a link establishment failure; Control the radio frequency signal conversion module (11) to re-obtain the link establishment instruction, update the link establishment data, and re-obtain the identification result until the re-obtained identification result is a link establishment success.

7. The method according to claim 2, characterized in that, The generating a link establishment instruction based on the digital link establishment signal includes: When the radio frequency signal conversion module (11) generates the digital link establishment signal, start timing for a first preset duration synchronously; When the digital signal processing module (12) obtains the digital link establishment signal, start timing for a second preset duration synchronously; In response to the arrival of the first preset duration, the radio frequency signal conversion module (11) generates a first link establishment instruction; In response to the arrival of the second preset duration, the digital signal processing module (12) generates a second link establishment instruction; Wherein, the first link establishment instruction and the second link establishment instruction are mutually matching link establishment instructions.

8. The method according to claim 6, wherein The completing the establishment of the magnetic resonance radio frequency signal receiving link (10) based on the identification result includes: In response to the identification result being a link establishment failure; Then the radio frequency signal conversion module (11) re-obtains the clock signal to generate a new digital link establishment signal; Generate a new link establishment instruction based on the new digital link establishment signal, and update the link establishment data based on the new establishment instruction; The digital signal processing module (12) re-obtains the identification result based on the updated link establishment data until the re-obtained identification result is a link establishment success.

9. The method according to claim 7 or 8, characterized in that, The recognition result of link establishment failure means that the parameter information of the link establishment data is consistent with the parameter information of the digital link establishment signal; The recognition result of successful link establishment means that the parameter information of the link establishment data is inconsistent with the parameter information of the digital link establishment signal.

10. A magnetic resonance radio frequency signal receiving link, characterized in that, The receiving link (10) is used to receive and / or process the radio frequency signal generated by the magnetic resonance imaging device (20); The receiving link (10) includes at least one radio frequency signal conversion module (11) and a digital signal processing module (12). The at least one radio frequency signal conversion module (11) and the digital signal processing module (12) are independently arranged in the magnetic resonance imaging device (20); The at least one radio frequency signal conversion module (11) and the digital signal processing module (12) are connected by wireless or wired means.

11. The link according to claim 10, wherein Each radio frequency signal conversion module (11) includes at least one analog signal processor (111), at least one analog-to-digital converter (112) and a signal transmitter (113). The analog signal processor (111) is connected to the analog-to-digital converter (112) in one-to-one correspondence, and each analog-to-digital converter (112) is connected to the signal transmitter (113); Each analog signal processor (111) is used to preprocess the analog radio frequency signal received by the receiving coil (21) and send the preprocessed analog radio frequency signal to the corresponding analog-to-digital converter (112); Each analog-to-digital converter (112) is used to convert the preprocessed analog radio frequency signal into a digital radio frequency signal, and / or convert the digital radio frequency signal into corresponding link establishment data based on the digital protocol carried on the signal transmitter (113), and send the link establishment data to the signal transmitter (113); The signal transmitter (113) is used to send the link establishment data to the digital signal processing module (12).

12. The link according to claim 11, characterized in that, The digital signal processing module (12) includes a signal receiver (121) and a data receiving and processing unit (122). The signal receiver (121) is connected to the data receiving and processing unit (122); The signal receiver (121) is used to receive the link establishment data sent by the radio frequency signal conversion module (11) and send the link establishment data to the data receiving and processing unit (122); The data receiving and processing unit (122) is used to analyze and process the link establishment data and send the digital radio frequency signal corresponding to the link establishment data to the host computer (30).

13. The link according to any one of claims 10-12, characterized in that, Each radio frequency signal conversion module (11) is dispersedly arranged on the hospital bed (201) of the magnetic resonance imaging device (20), and the digital signal processing module (12) is arranged on the magnet side of the magnetic resonance imaging device (20); or, The at least one radio frequency signal conversion module (11) is integrated in the receiving coil (21), and the digital signal processing module (12) is arranged on the magnet (202) side of the magnetic resonance imaging device (20).

14. The link according to any one of claims 10 - 12, characterized in that, The radio frequency signal conversion module (11) communicates with the digital signal processing module (12) through millimeter wave or optical signals.

15. A magnetic resonance imaging device, characterized in that, The magnetic resonance imaging device (20) includes a magnetic resonance device body (203), a hospital bed (201), a receiving coil (21), and a magnetic resonance radio frequency signal receiving link (10) as described in any one of claims 10-14; The magnetic resonance device body (203) forms a cavity in a ring shape, the hospital bed is used to support the receiving coil, and the receiving coil (21) moves in the cavity following the hospital bed (201).

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