A kind of automatic detection and switching system of key device of shipborne satellite communication antenna

Abstract

The application discloses a kind of automatic detection and switching system of shipborne satellite communication antenna key device, belong to the field of satellite communication device automatic detection and health management of shipborne;On the basis of reliability analysis to each device of system, key device is designed with hardware hot standby redundancy, and on software, the state of each device of system is detected in various aspects such as communication, data and operating state in hierarchical manner, then, according to the actual situation and inherent attribute of system, the switching priority of equipment is set, and automatic switching is carried out in combination with equipment detection state, to realize the automatic guarantee of task under the condition of no human intervention.The method greatly improves the reliability and health management level of system.

Description

Technical Field

[0001] This invention relates to the field of automatic detection and health management of shipborne satellite communication devices, and particularly to the field of hardware hot standby redundancy design. Background Technology

[0002] Due to the high dependence of shipborne antennas on communication, satellite communication antennas often operate continuously, placing extremely high demands on the reliability of components. Given the unique environmental requirements at sea and the ever-increasing demands from users for equipment operating time and reliability, simply reducing the failure rate of each individual device is no longer sufficient to effectively meet reliability requirements. Summary of the Invention

[0003] This invention specifically proposes a redundant design for key component hardware combined with real-time automatic software detection and switching methods. This significantly reduces the failure rate caused by component failures, offering greater operability and more effective system reliability improvement than simply increasing the failure rate of individual components. The parallel-then-serial local redundancy design optimizes reliability. Real-time data acquisition and hierarchical status monitoring ensure more timely and effective fault detection, and clearer status display. Prioritization based on inherent device attributes and real-time intelligent device switching eliminate the need for manual intervention, simplifying the operation process.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] An automatic detection and switching system for key components of a shipborne satellite communication antenna includes an antenna control unit, a navigation unit, an inertial navigation unit, a receiver, a gyroscope data acquisition unit, and an antenna drive control unit.

[0006] The navigation unit has two devices, one as the primary device and one as the backup device; the receiver has two devices, one as the primary device and one as the backup device; the antenna drive control unit has two sets of drive motors, one as the primary device and one as the backup device; the output terminals of the two sets of drive motors are engaged with the drive terminal of the same rotation axis; each gyroscope in the gyroscope data acquisition unit that outputs data has another gyroscope as its backup.

[0007] The antenna control unit monitors the status of the navigation, unit inertial navigation unit, receiver, gyroscope data acquisition unit and antenna drive control unit in real time, and selects and controls its own data sources.

[0008] Furthermore, the antenna control unit is connected to the navigation unit via Ethernet; and it is connected to the inertial navigation unit, receiver, gyroscope data acquisition unit, and antenna drive control unit via CAN bus for data acquisition and drive control.

[0009] Furthermore,

[0010] The antenna control unit collects data from each device interface, parses it into relevant statuses, and switches between the current device and the data source based on the relevant statuses. The antenna control unit includes a communication monitoring module, a device status monitoring module, an operation status monitoring module, and a device switching module.

[0011] The communication monitoring module is used to monitor and detect the communication interface;

[0012] The equipment status monitoring module, under normal communication conditions, processes data information from each device to obtain equipment status monitoring.

[0013] The operation status monitoring module detects the operation status of the primary device when the primary / backup device is selected; the device switching module switches the current device or data source based on the current status of the primary and backup devices and data interfaces.

[0014] Compared with the prior art, the advantages of this invention are as follows:

[0015] The antenna control unit monitors all devices in real time via a CAN network, offering high communication speed and reliability. External navigation data is communicated through a network interface, providing high speed and good versatility.

[0016] The main drive shaft uses a dual-motor drive, with the two motors serving as backups for each other. When both motors are functioning normally, a dual-motor backlash-free drive mode is used, which eliminates backlash and provides better tracking performance. If either motor malfunctions, it automatically switches to a single-motor drive mode. Tracking performance remains unaffected without commutation, although there may be slight fluctuations during commutation, but normal functioning is still guaranteed. The switching between single and dual motor modes considers parameter matching for both modes and ensures a smooth transition. Attached Figure Description

[0017] Figure 1 A block diagram illustrating the automatic switching principle of key components in a shipborne satellite communication antenna according to the present invention.

[0018] Figure 2 Hardware connection diagram of automatic switching of key components of a shipborne satellite communication antenna according to the present invention.

[0019] Figure 3 A schematic diagram of the automatic switching loop control principle for key components of a shipborne satellite communication antenna according to the present invention.

[0020] Figure 4 Flowchart of automatic switching software for key components of a shipborne satellite communication antenna according to the present invention

[0021] Figure 5 Flowchart of an automatic switching software for navigation data sources using a shipborne satellite communication antenna according to the present invention

[0022] Figure 6 Flowchart of automatic switching software for a shipborne satellite communication antenna gyroscope device according to the present invention

[0023] Figure 7 Flowchart of automatic switching software for shipborne satellite communication antenna receiver equipment according to the present invention

[0024] Figure 8 A software flowchart for automatic switching between single and dual-machine drive of a shipborne satellite communication antenna according to the present invention. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings:

[0026] This embodiment features a partially redundant hardware design based on hot standby redundancy. It primarily includes a navigation device, a receiver, pitch-axis feedforward and feedback gyroscopes, cross-axis feedforward and feedback gyroscopes, and motor drive strategies for azimuth, pitch, and cross axes. The navigation device comprises three mutually redundant navigation information sources: two external inertial navigation systems and one internal built-in navigation system. The receiver has two backup devices. The pitch and cross-axis feedback and feedforward gyroscopes each have two mutually redundant sensors. The azimuth, pitch, and cross-axis driving antennas each have two motor drives, employing a dual-motor backlash-free drive strategy as well as a backup single-motor drive strategy. Switching between all these devices is centrally monitored and controlled by the antenna control unit via CAN bus and network communication.

[0027] Specifically, all hot backup devices adopt a parallel local redundancy design, and except for navigation devices, they all adopt a dual-machine backup scheme with one primary and one backup.

[0028] Specifically, the primary and backup receivers have the same hardware installation status. In software communication, the primary device has a slightly higher priority. During operation, the system automatically switches based on the real-time monitored device status.

[0029] Specifically, the gyroscope devices are installed on the azimuth and pitch axes respectively, and are divided into feedforward and feedback gyroscopes. All types of gyroscopes are dual-machine backups, and the hardware installation and software communication are of equal status and priority. During operation, they automatically switch according to the real-time monitored device status and preset priority.

[0030] Specifically, navigation equipment can employ positioning modules and inclinometers, or, depending on the data used and accuracy requirements, a higher-performance inertial navigation system (INS). In addition to its built-in INS, this system connects to two external fiber optic INS. Their priorities are pre-set based on the performance and location of each INS, and automatically switch based on real-time monitoring of various fault states of each device.

[0031] Specifically, the main drive shaft uses a dual-motor drive, with the two motors serving as backups for each other. When both motors are functioning normally, a dual-motor backlash-free drive mode is used, which eliminates backlash and provides better tracking performance. If either motor malfunctions, it automatically switches to a single-motor drive mode. Tracking performance remains unaffected without reversing direction. There may be slight fluctuations during reversing, but normal functioning is still guaranteed. The switching between single and dual motors considers parameter matching for both modes and ensures a smooth transition.

[0032] Specifically, the antenna control unit monitors all devices in real time via a CAN network, offering high communication speed and reliability. External navigation data is communicated through a network interface, providing high speed and good versatility.

[0033] Figure 1 This is a system structure diagram, describing the system's functional and hardware composition. Dark colors represent hardware components, while light colors represent functional modules. In 101, the antenna control unit is the core of device detection and primary / backup switching. 102-106 are all the hot backup modules in the system. The status monitoring module in 101 monitors the status of each device in 102-106 in real time, and the automatic switching module selects and controls the data of each module.

[0034] Figure 2 The diagram shows the system's hardware connections. The key components of the shipborne satellite communication antenna mainly consist of an antenna control unit, inertial navigation system, two external navigation data channels, primary and backup receivers, a gyroscope data acquisition box, and an antenna driver. The antenna control unit is the core processing device for data detection and automatic switching of various hot-backup devices. It connects to external navigation data via Ethernet, offering strong versatility, and communicates with other devices via a CAN bus for data acquisition and drive control, resulting in more real-time and reliable communication.

[0035] Figure 3 This is a block diagram illustrating the loop control principle, describing the basic principle of loop control for switching key components. Vref represents the currently given position command value, Wc(s) and Wm(s) represent the transfer functions of the two motor drive sections, Wa(s) represents the current bias regulator, and Wb(s) represents the torque balancing regulator. Wch1(s) and Wch2(s) are loop regulators that switch between single and dual-motor operation based on the component status. Further adjustments are made to each relevant loop regulator based on the current component status detected by the system.

[0036] The implementation process of this system is as follows: Figures 4-8 As shown, it specifically includes the following:

[0037] Data acquisition: This step involves collecting data from each device interface and parsing it into relevant status values.

[0038] Communication monitoring primarily involves monitoring and testing the communication interfaces of the equipment. This mainly involves the most basic physical-level testing for fault detection in each device.

[0039] Equipment status monitoring: This step mainly involves processing data and other information from various devices to obtain equipment status monitoring results under normal communication conditions.

[0040] Device switching is a step that involves switching the current device or data source based on the current status of each primary and backup device and data interface.

[0041] Operational status monitoring: This step mainly involves monitoring the operational status of each device in the system under the current primary / standby device selection state.

[0042] Loop control: This step completes the configuration of each loop and adjusts the loop parameters of the equipment according to the current equipment status.

[0043] Specifically, regarding various data switching methods, data source monitoring communication, and data validity, such as... Figure 5 As shown. Gyroscope devices monitor device communication and fault status, such as... Figure 6 As shown. In addition to communication and fault states, the receiver device also pays attention to the locked state, such as... Figure 7 As shown. The driver's single / dual-machine switching switches between dual-machine or single-machine control based on the fault status of the two paths, while coordinating with loop switching to complete the specific switching, such as... Figure 8 As shown.

[0044] After the above process, the main work of automatic switching of key components can be completed. This process adopts layered detection for equipment fault status monitoring, with clear logic and convenient implementation, making the detection of each component easy to implement in engineering practice. In addition to achieving a stable transition of equipment switching, it provides a good foundation for engineering implementation and future maintenance and scalability.

Claims

1. An automatic detection and switching system for key components of a shipborne satellite communication antenna, characterized in that, It includes an antenna control unit, a navigation unit, an inertial navigation unit, a receiver, a gyroscope data acquisition unit, and an antenna drive control unit; The navigation unit has two devices, one as the primary device and one as the backup device; the receiver has two devices, one as the primary device and one as the backup device; the antenna drive control unit has two sets of drive motors, one as the primary device and one as the backup device; the output terminals of the two sets of drive motors are engaged with the drive terminal of the same rotation axis; each gyroscope in the gyroscope data acquisition unit that outputs data has another gyroscope as its backup. The antenna control unit monitors the status of the navigation, inertial navigation unit, receiver, gyroscope data acquisition unit, and antenna drive control unit in real time, and selects and controls its own data sources; The antenna control unit is connected to the navigation unit via Ethernet; and it performs data acquisition and drive control with the inertial navigation unit, receiver, gyroscope data acquisition unit, and antenna drive control unit via CAN bus. The antenna control unit collects data from each device interface, parses it into relevant statuses, and switches between the current device and the data source based on the relevant statuses. The antenna control unit includes a communication monitoring module, a device status monitoring module, an operation status monitoring module, and a device switching module. The communication monitoring module is used to monitor and detect the communication interface; The equipment status monitoring module, under normal communication conditions, processes data information from each device to obtain equipment status monitoring. The operation status monitoring module detects the operation status of the primary device when the primary / backup device is selected; the device switching module switches the current device or data source based on the current status of the primary and backup devices and data interfaces.

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