Integrated control system for high frequency transmitter

Abstract

The application discloses an integrated control system of a high-frequency transmitter and belongs to the technical field of high-frequency transmitters. In the system, the high-frequency transmitter comprises a general control unit and functional components; the high-frequency transmitter adopts a communication architecture taking a multi-path parallel CAN bus as a main communication, a local area network and a star control network as supplements; a part of the functional components and the general control unit adopt a local area network to transmit instructions and data; another part of the functional components are respectively connected to a CAN bus, and a star control network is internally constructed in the functional components. The application is suitable for a high-power high-frequency transmitter with a large number of control nodes, functional components working according to frames, and complex and various fault signals and fault modes, and realizes integrated communication control, synchronous control and fault control of the high-frequency transmitter.

Description

Technical Field

[0001] This invention belongs to the field of high-frequency transmitter technology, specifically relating to an integrated control system for a high-frequency transmitter. Background Technology

[0002] In an all-solid-state high-power high-frequency transmitter architecture, the RF power output is achieved by combining multiple final-stage power amplifier modules. Commonly used final-stage power amplifier modules typically do not exceed a few hundred watts. However, if a high-frequency transmitter is required to output tens of kilowatts, the number of combined final-stage power amplifier modules can reach hundreds. Furthermore, the number of functional components or modules in a high-frequency transmitter, such as the main power supply module, auxiliary power supply module, RF filters, synthesizers, RF switches, and driver power amplifiers, is also enormous. The operating status, real-time parameters, and fault information of each functional component or module need to be controlled and monitored by the high-frequency transmitter. From the perspective of the entire high-frequency transmitter, the number of nodes that need to be controlled can reach hundreds, which places significant pressure on the design of the overall control system.

[0003] When the number of control nodes in a high-frequency transmitter is small, star or ring control architectures are commonly used. The advantages are simple control circuits, software, and algorithms. The disadvantages are that with a large number of control nodes, star or ring architectures can affect information transmission rates, increase node response times, and are difficult to maintain and expand. When the number of control nodes in a high-frequency transmitter is large and they are close together, distributed or tree-structured control architectures are commonly used. The advantages are good scalability, the ability to select the shortest path, low latency, high transmission rates, and the fact that a single node failure does not affect system control operations. The disadvantages are complex data exchange, path selection, and flow control, as well as long and complex control cables. When the number of control nodes in a high-frequency transmitter is large and they are far apart, a bus architecture can be chosen. The advantages of a bus are long transmission distance, large data capacity, strong scalability, and the ability to implement various transmission methods such as point-to-point, point-to-multipoint, and global broadcast. It also has high reliability. The disadvantage is that the bus has limited load capacity, therefore the number of control nodes on a single bus is generally limited.

[0004] In specific application scenarios, high-frequency transmitters output in working frames, similar to a series of long pulse trains with short pauses in between. Within each working frame, the carrier frequency and power amplitude of the high-frequency transmitter are different, and the duration of each frame is also unequal. Based on these operational characteristics, certain functional components of the high-frequency transmitter also need to operate frame-by-frame. Therefore, the control system requires strict synchronization control of these functional components to ensure uniform and synchronized operation.

[0005] The high-frequency transmitter generates a massive amount of data, including the operating status of its various functional components, real-time parameters (such as voltage, current, temperature, power, and airflow), and fault information (such as overvoltage, undervoltage, overcurrent, overtemperature, overpower, and over-standing wave ratio). This vast amount of fault modes and data presents a significant challenge to the fault control and protection of high-frequency transmitters. In practical applications, fault control of high-frequency transmitters must ensure the effectiveness, accuracy, and real-time nature of fault protection while minimizing the false alarm rate, thus maintaining the transmitter's operational reliability within a reasonable range. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an integrated control system for high-frequency transmitters. This system is suitable for high-power high-frequency transmitters with numerous control nodes, functional components operating on a frame-by-frame basis, and complex and diverse fault signals and modes, enabling integrated communication control, synchronization control, and fault control of the high-frequency transmitter.

[0007] Specifically, the present invention provides an integrated control system for a high-frequency transmitter, the high-frequency transmitter including a central control unit and functional components; the high-frequency transmitter adopts integrated communication control; the integrated communication control is a communication architecture with multi-channel parallel CAN bus as the backbone communication, local area network and star control network as auxiliary components;

[0008] Some of the functional components communicate with the central control unit via a local area network (LAN) to transmit commands and data.

[0009] Another part of the functional components are connected to a CAN bus. Each functional component contains several functional sub-modules. A star control network is constructed within the functional component, with the communication control module as the control core. The other functional sub-modules are connected to the communication control module. The communication control module receives control commands sent by the central control unit through the CAN bus, parses the relevant control commands, and forms drive switching signals on the I / O ports. The communication control module also collects, detects, and converts the switching and analog signals reported by other functional sub-modules within the functional component into software-readable digital quantities, and uploads the relevant data to the central control unit through the CAN bus.

[0010] The multi-channel parallel CAN bus transmits information via broadcast. Each CAN bus is connected to a CAN bus interface of the central control unit through an integrated control cable to achieve CAN bus communication.

[0011] Furthermore, the integrated control system also includes a synchronization control network, which generates, transmits, parses, and controls frame synchronization signals and outputs enable signals.

[0012] The frame synchronization signal is generated by the system above the high-frequency transmitter and is received, parsed and processed by the central control unit;

[0013] The output enable signal is generated by the central control unit after performing delay calculations based on the received control commands and frame synchronization signals. There is a timing correlation between the frame synchronization signal and the output enable signal, enabling the high-frequency transmitter and functional components to operate frame by frame. The delay between the frame synchronization signal and the output enable signal is determined by the high-frequency transmitter's operating mode and switching mode.

[0014] The integrated control cable enables the integrated decomposition, transmission, and control of CAN bus communication, frame synchronization signals, and output enable signals.

[0015] Furthermore, the drive switch signals on the I / O port only take effect when the frame synchronization signal and the output enable signal arrive at the communication control module.

[0016] Furthermore, the frame synchronization signal and output enable signal are decomposed by the central control unit and transmitted to each functional component via an integrated control cable. For functional components requiring frame synchronization and output control, the communication control module receives and processes the frame synchronization signal and output enable signal. When the communication control module receives the frame synchronization signal, it immediately activates the previously received CAN bus command information and completes the switching of working mode, working band, and output amplitude before the output enable signal arrives. After being parsed and processed by the communication control module, the output enable signal is divided into multiple drive signals to control the output of other functional sub-modules within the functional component.

[0017] Furthermore, when other functional submodules within the same functional component experience abnormal input or output or other malfunctions, the drive signal will change, cutting off the power output of other functional submodules within the same functional component and causing them to exit the working network.

[0018] Furthermore, the fault control network includes a fault redundancy network, which comprises a DC power output redundancy network and a radio frequency output redundancy network.

[0019] The DC power output redundancy network includes parallel grouping of the power outputs of functional components, and the main power supply and auxiliary power supply are designed according to the principle of fault redundancy.

[0020] The RF output redundancy network includes parallel grouping of the RF outputs of functional components, and a tree-shaped RF power combining network composed of the basic power amplifier module and the power amplifier unit.

[0021] Furthermore, the fault control network also includes a node parameter acquisition system, which accurately collects, converts, and digitizes the working parameters of interest to each functional component.

[0022] Furthermore, the fault control network employs a fault control and protection algorithm to classify and manage all faults of the high-frequency transmitter in a comprehensive manner, and to take different protection measures according to the set rules and algorithms.

[0023] Furthermore, the faults are classified into three categories: minor faults, general faults, and serious faults.

[0024] The minor faults refer to the types of faults that are allowed in the system redundancy design. The high-frequency transmitter will continue to operate. The high-frequency transmitter will clear and reset such faults after the next working frame arrives. If the minor faults can be cleared and reset, the high-frequency transmitter will record relevant information and continue to operate normally. If the minor faults cannot be cleared and reset and accumulate to a specified number of times, the high-frequency transmitter will issue a yellow alarm and record and upload relevant information to the next-level system. The entire unit will still continue to operate normally.

[0025] The general fault refers to a situation where the number of minor faults reaches a certain limit or an abnormality occurs in the input / output environment of the high-frequency transmitter. After the next working frame signal arrives, the high-frequency transmitter will clear and reset the general fault. If the general fault can be cleared and reset, the high-frequency transmitter will record the relevant information in the log, restore the power output, and continue to work. If the general fault cannot be cleared and reset after a specified number of consecutive attempts, the high-frequency transmitter will continuously shut down the power output, issue a red alarm, and record the relevant information. The high-frequency transmitter can only resume operation after manual intervention to troubleshoot the fault.

[0026] The aforementioned serious fault refers to a fault type that has a significant impact on the high-frequency transmitter. Continued operation will damage the entire device or cause the fault to spread severely. The high-frequency transmitter will immediately shut down its power output, enter standby mode, and not respond to any remote control commands. At the same time, a red alarm will be activated, and relevant information will be recorded. The high-frequency transmitter can only resume operation after manual intervention to eliminate the fault.

[0027] Furthermore, the integrated control cable is equipped with a critical fault hardware protection channel. When a preset critical fault occurs, the critical fault hardware protection channel will trigger a hardware interlock signal transition, cutting off the radio frequency power output before the software can process it.

[0028] The beneficial effects of the integrated control system for the high-frequency transmitter of the present invention are as follows:

[0029] To address the shortcomings of existing communication control, synchronization control, and fault control in high-frequency transmitters, this invention proposes an integrated control system for high-frequency transmitters. This system integrates the communication control, synchronization control, and fault control of the numerous functional components of the high-frequency transmitter, enabling real-time control, rapid switching, status acquisition, synchronous operation, fault mitigation, and rapid protection of the high-frequency transmitter. This allows the high-frequency transmitter to be suitable for complex application scenarios and maintain sufficiently stable and reliable power output.

[0030] The integrated control system for the high-frequency transmitter of this invention addresses the characteristics of high-frequency transmitters, such as a large number of functional components, complex types, difficult synchronization, and frequent faults. It proposes an integrated communication control network, an integrated hardware synchronization network, and an integrated fault control network, realizing the coordinated operation and health management of all functional components of the high-frequency transmitter, thereby improving the working efficiency of the equipment.

[0031] This invention also provides an integrated control cable that combines CAN bus communication, synchronous control, and rapid fault protection functions. The main functional components of the high-frequency transmitter, such as the power amplifier unit, power supply module, and preamplifier unit, are all connected to the main control unit using the integrated control cable, realizing functions such as information transmission, synchronous control, and fault protection.

[0032] In accordance with the health management requirements of high-frequency transmitters, redundant design was implemented for the faults of major functional components, a digital acquisition system for key status information was designed, all fault modes were classified and graded for control and protection, and a rapid protection response mechanism for severe faults was designed, thus realizing intelligent health management and control of high-frequency transmitters.

[0033] The integrated control system for high-frequency transmitters of this invention has a certain degree of versatility and is applicable to the control architecture design of various types of high-power high-frequency transmitter systems with complex structures and diverse functions. It enables online control and monitoring of all functional components within the high-frequency transmitter. The integrated control system for high-frequency transmitters of this invention is simple to implement, has high control precision, strong anti-interference capability, low cost, and high reliability, and can effectively improve the reliability and stability of high-frequency transmitter systems. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the integrated communication control network according to an embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram of a star control network according to an embodiment of the present invention.

[0036] Figure 3 This is a schematic diagram of the internal networking of the power amplifier unit according to an embodiment of the present invention.

[0037] Figure 4 This is a block diagram illustrating the principle of the communication control module in an embodiment of the present invention.

[0038] Figure 5 This is a schematic diagram of the timing relationship between the frame synchronization signal and the output enable signal in an embodiment of the present invention.

[0039] Figure 6 This is a schematic diagram of a DC power supply output redundancy network according to an embodiment of the present invention.

[0040] Figure 7 This is a schematic diagram of the radio frequency output redundancy network according to an embodiment of the present invention.

[0041] Figure 8 This is a schematic diagram of the node parameter acquisition system according to an embodiment of the present invention.

[0042] Figure 9 This is a schematic diagram of fault classification according to an embodiment of the present invention.

[0043] Figure 10 This is a flowchart of the fault diagnosis and control protection algorithm according to an embodiment of the present invention.

[0044] Figure 11 This is a schematic diagram of the hardware protection channel for severe faults according to an embodiment of the present invention. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the embodiments and the accompanying drawings.

[0046] One embodiment of the present invention is an integrated control system for a high-frequency transmitter. The high-frequency transmitter includes a central control unit and functional components. The high-frequency transmitter employs integrated communication control; the integrated communication control uses a communication architecture with a multi-channel parallel CAN bus as the backbone communication, supplemented by a local area network and a star-shaped control network.

[0047] Integrated communication control refers to a communication architecture that uses a multi-channel parallel CAN bus as the backbone communication, supplemented by a local area network (LAN) and a star-shaped control network, to integrate and network the functional components of the high-frequency transmitter. The communication interface includes a CAN bus, a LAN, and a star-shaped control network, with the CAN bus as the backbone communication architecture, enabling fast and smooth data transmission between all control nodes. Some functional components of the high-frequency transmitter communicate with the central control unit via a LAN for command and data transmission; other functional components are connected to a specific CAN bus. Each functional component contains several functional sub-modules, and a star-shaped control network is constructed within it. The core control module is the communication control module, and other functional sub-modules are connected to this communication control module. The communication control module receives control commands from the central control unit via the CAN bus, parses the commands, and generates drive switching signals for the I / O ports. The communication control module also collects, detects, and converts the switching and analog signals reported by other functional sub-modules within the functional component into software-readable digital quantities, and then uploads the relevant data to the central control unit via the CAN bus. The multi-channel parallel CAN bus transmits information via broadcast. Each CAN bus is connected to a CAN bus interface of the central control unit through an integrated control cable to achieve CAN bus communication.

[0048] Preferably, the present invention also includes a synchronization control network for synchronization control. The synchronization control network generates, transmits, parses, and controls frame synchronization signals and output enable signals. The frame synchronization signal is generated by the system above the high-frequency transmitter and received, parsed, and processed by the central control unit. The output enable signal is generated by the central control unit after delay calculation based on the received control commands and frame synchronization signals. There is a timing correlation between the frame synchronization signal and the output enable signal, enabling the high-frequency transmitter and functional components to operate frame by frame, achieving uniform synchronous operation. The delay between the frame synchronization signal and the output enable signal is determined by the high-frequency transmitter's operating mode and switching mode. The integrated control cable realizes the integrated decomposition, transmission, and control of CAN bus communication, frame synchronization signals, and output enable signals.

[0049] Preferably, the present invention also includes a fault control network, which includes a fault redundancy network, a node parameter acquisition system, and a fault control and protection algorithm.

[0050] like Figure 1As shown, in the high-frequency transmitter, the power distribution unit, cooling system, display screen, and attenuation network communicate via a local area network (LAN), and they are connected to the central control unit (CMU) through network cables. The CMU transmits control commands to the power distribution unit, cooling system, and attenuation network via the LAN, while their operating and monitoring parameters are also transmitted to the CMU via the LAN for real-time observation. The CMU transmits the information to be displayed to the display screen via the LAN, and the display screen's touch commands are transmitted to the CMU via the LAN to complete the corresponding control operations.

[0051] In addition to the aforementioned functional components, the high-frequency transmitter has numerous other functional components. To ensure simple and reliable control, the CAN bus is chosen as the backbone communication network. Since the number of connection points on a single CAN bus is limited, the high-frequency transmitter is designed with multiple parallel CAN buses to control the numerous functional components.

[0052] The high-frequency transmitter integrated control system of this invention features an integrated control cable that includes CAN bus communication, frame synchronization signals, output enable signals, and fault interlock signals, enabling integrated communication control, synchronization control, and fault control functions within the high-frequency transmitter. Figure 1 As shown, the preamplifier unit, RF detection and control unit, auxiliary power supply, and switch control are connected to the CAN1 interface of the main control unit via integrated control cable 1; some main power supply modules and auxiliary power supply modules are connected to the CAN2 interface of the main control unit via integrated control cable 2; some main power supply modules and auxiliary power supply modules are connected to the CAN3 interface of the main control unit via integrated control cable 3; some power amplifier units are connected to the CAN4 interface of the main control unit via integrated control cable 4; and some power amplifier units are connected to the CAN5 interface of the main control unit via integrated control cable 5. Through the above connections, the functional components of the high-frequency transmitter achieve integrated networking, and relevant control commands, synchronization signals, and fault interlock signals are transmitted to each functional component, enabling integrated control and collaborative operation of all functional components.

[0053] In high-frequency transmitters, some functional components contain multiple functional sub-modules. For example... Figure 2 As shown, within these functional components, all functional submodules require unified control and coordinated operation. Therefore, the integrated high-frequency transmitter control system of this invention constructs a star-shaped control network internally, with the communication control module as the control core. Figure 3As shown, taking the power amplifier unit as an example, it includes a communication control module, a basic power amplifier module, a harmonic filter, a power combining system, a driver power amplifier module, an RF sampling system, and an RF control module. The basic power amplifier module is connected to the communication control module via a bundled cable; the harmonic filter is connected to the communication control module via a bundled cable; the driver power amplifier module and the RF control module are connected to the communication control module via bundled cables; and the power combining system and the RF sampling system are connected to the communication control module via RF cables.

[0054] like Figure 4 As shown in the block diagram of the communication control module, the module is centered around an MCU. The CAN bus communication interface circuit, analog signal conditioning circuit, E2PROM, and digital I / O optocoupler isolation circuit are all connected to the MCU. The communication control module receives control commands from the central control unit via the CAN bus, parses the commands, and generates drive digital signals for the I / O ports. These signals do not take effect immediately but only upon the arrival of the frame synchronization signal and the enable signal. The communication control module uses digital control for each submodule, without data link networking, making it relatively simple and reliable. The operating status and real-time data of each submodule are transmitted to the communication control module in the form of digital or analog signals. The communication control module needs to collect, detect, and convert the digital and analog signals reported by the submodules into software-readable digital quantities, and upload the relevant data of interest to the central control unit via the CAN bus for real-time display and observation.

[0055] According to the application requirements of high-frequency transmitter systems, high-frequency transmitters need to operate in frames. The carrier frequency, power amplitude, and frame duration are not constant in each frame. Based on these characteristics, the functional components of the high-frequency transmitter also need to operate synchronously according to the frames. Synchronization control mainly refers to the transmission, parsing, processing, and control of frame synchronization signals and output enable signals. Frame synchronization signals and output enable signals are specifically used to control the synchronization of functional components. The frame synchronization signal is generated by the upstream system of the high-frequency transmitter and is received, parsed, and processed by the central control unit. The output enable signal is generated by the central control unit based on the received control commands and frame synchronization signals after corresponding delay calculations. There is a certain timing correlation between the output enable signal and the frame synchronization signal, enabling the high-frequency transmitter and its functional components to operate frame by frame. Figure 5 As shown. The delay between the frame synchronization signal and the output enable signal is not fixed and is determined by the high-frequency transmitter's operating mode and switching mode.

[0056] The frame synchronization signal and output enable signal are decomposed by the central control unit and transmitted to each functional component via integrated control cables. The power module of the high-frequency transmitter does not need to operate on a frame-by-frame basis; its output is continuous. However, considering scalability and consistency, all integrated control cables contain frame synchronization and output enable signals. For functional components requiring frame synchronization and output control, the communication control module receives and processes these signals. Upon receiving the frame synchronization signal, the communication control module immediately activates previously received CAN bus command information, completing the switching of operating mode, operating band, and output amplitude before the output enable signal arrives. The output enable signal, after being parsed and processed by the communication control module, is divided into multiple drive signals to control the output of other functional sub-modules within the same functional component. For example, the output enable signal, after being parsed and processed by the communication control module, is divided into multiple drive signals to control the output of the basic power amplifier module. The output enable signal and the basic power amplifier module's RF detection signal are processed by gate circuits and composite semiconductor switching circuits to form a signal with a certain driving capability, which is sent to the basic power amplifier module to drive it to output power as required. During the validity period of the drive signal, the basic power amplifier module does not make any adjustments. Preferably, another function of the drive signal is that when other functional sub-modules within the same functional unit, such as the basic power amplifier module, experience input or output abnormalities or other faults, the drive signal changes, cutting off the power output of the basic power amplifier module, causing it to exit the working network, and preventing the fault of the basic power amplifier module from spreading and causing serious impact on the RF network or power network.

[0057] The integrated control system of the high-frequency transmitter of the present invention also includes a fault control network, which includes a fault redundancy network. The fault redundancy network includes a DC power output redundancy network and a radio frequency output redundancy network. The DC power output redundancy network includes parallel grouping of the power outputs of functional components, and both the main power supply and the auxiliary power supply are designed according to the fault redundancy principle. The radio frequency output redundancy network includes parallel grouping of the radio frequency outputs of functional components, and the basic power amplifier module and the power amplifier unit form a tree-shaped radio frequency power combining network.

[0058] like Figure 6As shown, the fault redundancy network includes a DC power supply output redundancy network. In the high-frequency transmitter embodiment, both the main power supply and the auxiliary power supply are designed according to the fault redundancy principle. Calculated from the perspective of main power supply power capacity, one main power supply module can meet the power supply requirements of one power amplifier unit. However, considering fault redundancy, M main power supply modules and N power amplifier units are grouped into a main power supply output group (M>N). The output terminals of the main power supply modules and the power input terminals of the power amplifier units are both connected to the main power supply bus. When a single main power supply module fails, the remaining main power supply modules can still ensure the normal operation of the power amplifier unit. Even if multiple main power supply modules fail within a main power supply group, the high-frequency transmitter, through detection and control software coordination, can appropriately reduce the RF output level to ensure that the reliability of the high-frequency transmitter mission is not affected. The fault redundancy architecture design of the auxiliary power supply is similar to that of the main power supply. The output terminals of the auxiliary power supply modules and the power input terminals of the power amplifier units are both connected to the auxiliary power supply bus. Even if some auxiliary power supply modules fail, the remaining auxiliary power supply modules can still ensure the normal operation of the power amplifier unit.

[0059] like Figure 7 As shown, the fault redundancy network also includes an RF output redundancy network. In the high-frequency transmitter, basic power amplifier modules and power amplifier units form a tree-shaped RF power combining network. Multiple basic power amplifier modules constitute a power amplifier unit power combining network, multiple power amplifier units constitute a power amplifier cabinet power combining network, and multiple power amplifier cabinets constitute the overall power combining network of the transmitter. When a basic power amplifier module fails, the RF detection circuit sends out a fault signal, causing the drive signal to jump, cutting off the output of the current basic power amplifier module, and removing it from the power combining network to prevent the fault from escalating. The removal of a single basic power amplifier module from the network will have a certain impact on the output power of the power amplifier unit it belongs to, but the impact on the overall transmitter output is negligible. When two or more basic power amplifier modules fail within a power amplifier unit, or when the power combiner, harmonic filter, etc., fail, the communication control module cuts off the power output or power input of the power amplifier unit by controlling the drive power amplifier module, flipping the output enable signal, and power protection, causing it to exit the power combining network and power network to prevent the fault from escalating. The removal of a single power amplifier unit from the network will have some impact on the power output of the power amplifier cabinet it belongs to, but the impact on the overall output of the unit is relatively small. Even if multiple power amplifier units fail in the high-frequency transmitter synthesis network, if they are evenly distributed across multiple power amplifier cabinets, the detection and control software can take some compensatory measures to reduce the impact of the failure on the overall power output of the unit.

[0060] like Figure 8As shown, the fault control network includes a node parameter acquisition system. Taking a power amplifier unit as an example in a high-frequency transmitter, the operating parameters of its various sub-modules, such as voltage, current, temperature, forward and reverse power, VSWR, and drive power, are of interest to the entire transmitter or power amplifier unit. These operating parameters can reflect the current operating status of the power amplifier unit in real time. These analog or switching quantities are sent to the communication control module (MCU) for processing through specially designed sampling, detection, and conditioning circuits. The MCU converts these analog quantities into digital quantities via an on-chip ADC (Analog-to-Digital Converter) for further processing. The sampling circuit includes an integrated current sensor, thermistor, transmission line coupler, forward and reverse RF coupler, etc., and is connected to the main power supply circuit, RF circuit, etc.; the detection circuit includes a temperature detection circuit, RF detection module, etc., and is connected to the sampling circuit; the conditioning circuit mainly includes a filter circuit, impedance matching circuit, operational amplifier circuit, etc., and is connected to the detection circuit. It should be noted that, due to the limited number of bits in the on-chip ADC and the small dynamic range of RF detection, to accurately detect changes in RF power, the detection voltage needs to be amplified to a reasonable range. This can improve the power detection accuracy under fixed ADC resolution conditions. After the analog signal is converted to a digital signal, relevant values ​​are assigned in the detection and control software, and digital filtering, unit conversion, threshold comparison, etc., are performed to ultimately obtain accurate real-time monitoring data and fault information.

[0061] The aforementioned fault control network also includes fault diagnosis and control protection algorithms. In high-frequency transmitters, due to the large number of control nodes, and each control node containing multiple sub-modules, the combined operating status and real-time parameters monitored by all control nodes constitute a massive database. Most operating parameters need to be controlled within a reasonable range of variation; exceeding these limits indicates an abnormal operating phenomenon, i.e., a fault point. The sum of all possible fault points also constitutes a large database. Considering the impact of different fault modes on the overall operation, it is necessary to classify and grade all faults for control and protection, minimizing the impact of faults on the overall power output and ensuring that the reliability of the high-frequency transmitter's mission remains within a reasonable range.

[0062] In this invention, the fault control network employs a fault control and protection algorithm to classify and manage all faults of the high-frequency transmitter in a comprehensive manner, and to take different protection measures according to the set rules and algorithms. For example... Figure 9 As shown, in high-frequency transmitters, faults are classified into three categories: minor faults, general faults, and serious faults. Different fault types require different control and protection measures, such as... Figure 10As shown. Minor faults refer to fault types allowed in the system redundancy design, such as faults in a single basic power amplifier module, a single power amplifier unit, or a single power supply module. These faults do not substantially affect the output performance of the high-frequency transmitter, and the high-frequency transmitter will continue to operate. The high-frequency transmitter will clear and reset these faults after the next working frame arrives. If a minor fault can be cleared and reset, the high-frequency transmitter will record relevant information and continue to operate normally; if a minor fault cannot be cleared and reset and accumulates to a specified number (e.g., 3 times), the high-frequency transmitter will issue a yellow alarm, record relevant information, and upload it to the next-level system, while the entire unit will continue to operate normally. General faults refer to minor faults reaching a certain limit or abnormalities in the high-frequency transmitter's input / output environment. These faults will have a certain impact on the transmitter's output power in the current working frame, thus requiring the transmitter's power output to be cut off in the current working frame. Since the input / output environment will change to some extent after the next working frame arrives, and there is a possibility of recovery, the high-frequency transmitter will clear and reset general faults after the next working frame signal arrives. If a general fault can be cleared and reset, the high-frequency transmitter will record the relevant information in its log, restore power output, and continue operating. If a general fault cannot be cleared and reset after a specified number of attempts (e.g., 3), the high-frequency transmitter will continuously shut down its power output, issue a red alarm, and record relevant information. The high-frequency transmitter can only resume operation after manual intervention to resolve the fault. A serious fault refers to a fault type that has a significant impact on the high-frequency transmitter; continued operation may damage the entire device or cause the fault to spread severely. Examples include cooling failures, load failures, power combiner overheating, and RF switch failures. Once a fault is determined to be a serious fault, the high-frequency transmitter will immediately shut down its power output, enter standby mode, and not respond to any remote control commands. Simultaneously, a red alarm will be issued, and relevant information will be recorded. The high-frequency transmitter can only resume operation after manual intervention to resolve the fault.

[0063] In high-frequency transmitters, some severe faults are extremely dangerous abnormal situations, and failure to provide timely protection could seriously jeopardize equipment safety. Therefore, a severe fault hardware protection channel is also designed into the integrated control cable, such as... Figure 11 As shown, once a set critical fault occurs (such as some extremely dangerous critical faults), the critical fault hardware protection channel will trigger a hardware interlock signal transition, cutting off the RF power output before the software, thereby achieving rapid hardware protection for the high-frequency transmitter.

[0064] To address the shortcomings of existing communication control, synchronization control, and fault control in high-frequency transmitters, this invention proposes an integrated control system for high-frequency transmitters. This system integrates the communication control, synchronization control, and fault control of the numerous functional components of the high-frequency transmitter, enabling real-time control, rapid switching, status acquisition, synchronous operation, fault mitigation, and rapid protection of the high-frequency transmitter. This allows the high-frequency transmitter to be suitable for complex application scenarios and maintain sufficiently stable and reliable power output.

[0065] The integrated control system for the high-frequency transmitter of this invention addresses the characteristics of high-frequency transmitters, such as a large number of functional components, complex types, difficult synchronization, and frequent faults. It proposes an integrated communication control network, an integrated hardware synchronization network, and an integrated fault control network, realizing the coordinated operation and health management of all functional components of the high-frequency transmitter, thereby improving the working efficiency of the equipment.

[0066] This invention also provides an integrated control cable that combines CAN bus communication, synchronous control, and rapid fault protection functions. The main functional components of the high-frequency transmitter, such as the power amplifier unit, power supply module, and preamplifier unit, are all connected to the main control unit using the integrated control cable, realizing functions such as information transmission, synchronous control, and fault protection.

[0067] In accordance with the health management requirements of high-frequency transmitters, redundant design was implemented for the faults of major functional components, a digital acquisition system for key status information was designed, all fault modes were classified and graded for control and protection, and a rapid protection response mechanism for severe faults was designed, thus realizing intelligent health management and control of high-frequency transmitters.

[0068] The integrated control system for high-frequency transmitters of this invention has a certain degree of versatility and is applicable to the control architecture design of various types of high-power high-frequency transmitter systems with complex structures and diverse functions. It enables online control and monitoring of all functional components within the high-frequency transmitter. The integrated control system for high-frequency transmitters of this invention is simple to implement, has high control precision, strong anti-interference capability, low cost, and high reliability, and can effectively improve the reliability and stability of high-frequency transmitter systems.

[0069] While the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the invention. Any equivalent changes or modifications made without departing from the spirit and scope of the invention are also within the scope of protection of the invention. Therefore, the scope of protection of the present invention should be determined by the claims of this application.

Claims

1. An integrated control system for a high frequency transmitter, characterized by The high-frequency transmitter comprises a total control unit and functional components; the high-frequency transmitter adopts integrated communication control; the integrated communication control is a communication architecture taking a multi-parallel CAN bus as a backbone communication, a local area network and a star control network as supplements; Part of the functional components and the total control unit adopt a local area network to transmit instructions and data; Another part of the functional components respectively access a CAN bus, the functional components internally contain several functional sub-modules, a star control network is constructed in the functional components, a communication control module is a control core, other functional sub-modules are connected with the communication control module, the communication control module receives control instructions sent by the total control unit through the CAN bus, analyzes relevant control instructions, forms driving on-off quantity signals on I / O ports, collects, detects and converts on-off quantities and analog quantities reported by other functional sub-modules in the functional components into digital quantities readable by software, and uploads relevant data to the total control unit through the CAN bus; The multi-parallel CAN bus adopts a broadcast mode to send information, each CAN bus is connected with a CAN bus interface of the total control unit through an integrated control cable, and CAN bus communication is realized; The integrated control system further comprises a synchronous control network, the synchronous control network generates, transmits, analyzes and controls frame synchronization signals and output enable signals; The frame synchronization signals are generated by a higher-level system of the high-frequency transmitter, and the total control unit is responsible for receiving, analyzing and processing the frame synchronization signals; The output enable signals are generated by the total control unit after delay calculation according to received control commands and frame synchronization signals, there is a time sequence correlation between the frame synchronization signals and the output enable signals, so that the high-frequency transmitter and the functional components can work in frames, and the delay between the frame synchronization signals and the output enable signals is determined by the working mode and the switching mode of the high-frequency transmitter; The integrated control cable realizes integrated decomposition, transmission and control of the CAN bus communication, the frame synchronization signals and the output enable signals; After the frame synchronization signals and the output enable signals are decomposed by the total control unit, the integrated control cable transmits them to each functional component; for the functional components requiring frame synchronization and output control, the communication control module receives and processes the frame synchronization signals and the output enable signals; when the communication control module receives the frame synchronization signals, the previously received CAN bus command information is immediately activated, and working mode switching, working waveband switching and output amplitude switching are completed before the output enable signals arrive; The output enable signals are analyzed and processed by the communication control module, and are divided into multiple driving signals for controlling the outputs of other functional sub-modules in the functional components; The driving on-off quantity signals on the I / O ports are activated when the frame synchronization signals and the output enable signals arrive at the communication control module.

2. The integrated control system for a high frequency transmitter of claim 1, wherein, When other functional sub-modules in the functional components input or output abnormally or have other faults, the driving signals jump, cut off the power output of the other functional sub-modules in the functional components, and make the other functional sub-modules exit the working network.

3. The integrated control system for a high frequency transmitter of claim 1, wherein, The integrated control system further comprises a fault control network, and the fault control network comprises a fault redundancy network, which includes a DC power output redundancy network and an RF output redundancy network; The DC power output redundancy network comprises parallel grouping of power outputs of functional components, and the main power supply and the auxiliary power supply are both designed according to the fault redundancy principle; The RF output redundancy network comprises parallel grouping of RF outputs of functional components, and the basic power amplifier module and the power amplifier unit form a tree-type RF power synthesis network.

4. The integrated control system for a high frequency transmitter of claim 3, wherein, The fault control network further comprises a node parameter acquisition system, which is configured to accurately acquire, convert and digitize working parameters of each functional component.

5. The integrated control system for a high frequency transmitter of claim 3, wherein, The fault control network adopts a fault control protection algorithm to classify and grade all faults of the high-frequency transmitter and comprehensively manage the faults according to a set rule algorithm to take different protection measures.

6. The integrated control system for a high frequency transmitter of claim 5, wherein, The faults are classified into three types, i.e., slight faults, general faults and serious faults. The slight faults are types of faults allowed to occur in the system redundancy design, and the high-frequency transmitter continues to work; the high-frequency transmitter clears and resets the faults after the next working frame arrives; if the slight faults can be cleared and reset, the high-frequency transmitter records relevant information and continues to work normally. If the slight faults cannot be cleared and reset and the number of the slight faults reaches a specified number, the high-frequency transmitter gives a yellow light alarm, records and uploads relevant information to a higher-level system, and continues to work normally. The general faults are types of faults in which the number of slight faults reaches a specified limit or the input and output environment of the high-frequency transmitter is abnormal; the high-frequency transmitter clears and resets the general faults after the next working frame arrives; if the general faults can be cleared and reset, the high-frequency transmitter records relevant information in a log, restores power output and continues to work; if the general faults cannot be cleared and reset for a specified number of times, the high-frequency transmitter continuously closes the power output, gives a red light alarm, records relevant information, and can only resume work after manual intervention to remove the faults. The serious faults are types of faults that have an important influence on the high-frequency transmitter, and continue to work will damage the whole machine or cause serious spread of the faults; the high-frequency transmitter immediately closes the power output, enters a standby state, does not respond to any remote control instructions, gives a red light alarm and records relevant information, and can only resume work after manual intervention to remove the faults.

7. The integrated control system for a high frequency transmitter of claim 5, wherein, A serious fault hardware protection channel is arranged in the integrated control cable, and once a set serious fault occurs, the serious fault hardware protection channel generates a hardware interlocking signal jump, and the RF power output is cut off by software.

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