Integrated communication-in-motion antenna servo control device

Abstract

The invention provides an integrated communication-in-motion antenna servo control device, and belongs to the technical field of antenna servo tracking, the integrated communication-in-motion antenna servo control device comprises a comprehensive management board card, a control board card and a driving board card, the comprehensive management board card is connected with the control board card through a CAN bus, the control board card is connected with the driving board card through the CAN bus and an IO signal, and the driving board card is connected with the integrated management board card. And the three parts are assembled in a stacking manner by means of a pin-jack and a fastening screw, so that the servo driving task of the antenna is completed together. The beacon receiver function is integrated into the servo driving platform, an external independent beacon receiver module is omitted, the system integration degree is improved, and the size, weight and power consumption of the servo driving platform are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of antenna servo tracking, and in particular to an integrated communication-in-motion antenna servo control platform. Background Art

[0002] With the continuous development of satellite communication technology, moving antennas play an increasingly important role. In moving antennas, the servo control platform is used to control the motors of each axis, so that the antenna can accurately point to the direction of the target satellite and receive satellite signals.

[0003] The mobile antenna servo control platform is mainly composed of a control unit, a receiver unit and a drive unit. The receiver unit collects radio frequency signals, calculates the beacon power and transmits it to the control unit; the control unit collects external sensor information, calculates the target pointing angle, and then performs loop calculation based on the calculation results of the receiver unit to generate the control signal of the drive unit; the drive unit is used to amplify the control signal to drive the motors of each axis.

[0004] At present, in some small antennas, due to their working platform, power consumption and size have become key indicators affecting antenna performance. The antenna servo control platform is the main source of power consumption for the antenna. At the same time, its size also has an important impact on the size design of the antenna. In some antennas with smaller spaces, traditional antenna servo control platforms cannot be installed due to size issues. Therefore, it is of great significance to realize the miniaturization and low-power design of the antenna servo control platform. Summary of the invention

[0005] In order to realize the miniaturization and low power consumption design of the servo control platform of the mobile communication antenna, the present invention provides an integrated mobile communication antenna servo control platform. The RF agile transceiver chip AD9361 is applied to the receiver system to realize the integrated design of the receiver system and the control system, and the motor drive mode of different axes is personalized to reduce power consumption and size.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An integrated mobile communication antenna servo control device comprises an integrated management board S1, a control board S2 and a drive board S3;

[0008] The integrated management board integrates an ARM chip A1, an SD card A2, a CAN transceiver IA3 and an Ethernet transceiver A4, and is used to realize Ethernet data interaction, data storage and program management functions;

[0009] The control board integrates a radio frequency agile transceiver B1, an FPGA chip B2, an MCU chip B3, a CAN transceiver IIB4 and an RS422 transceiver B5, and is used to realize beacon reception, loop control and external communication functions; the radio frequency agile transceiver B1 is connected to the FPGA chip B2 via a parallel interface and an SPI interface, and the FPGA chip B2 is connected to the MCU chip B2 via a parallel interface;

[0010] The driving board integrates a driving module C1, two intelligent drivers and a power supply circuit C4; the two intelligent drivers are used to drive the azimuth and pitch motors respectively, and the driving module is used to drive the polarization motor;

[0011] The integrated management board, control board and drive board are stacked in sequence, and adjacent boards are connected via double-row pins and sockets with a spacing of 2.54 mm.

[0012] Furthermore, the ARM chip runs the Linux operating system, is connected to the host computer via a 100M Ethernet through an Ethernet transceiver, and is connected to the host computer and the control board through a CAN transceiver; the ARM chip is used to realize Ethernet data interaction, data storage, and program management functions;

[0013] After receiving the control command from the host computer, the ARM chip parses it and then transmits it to the control board via CAN. At the same time, the antenna status information sent by the control board is transmitted to the host computer via CAN or Ethernet and stored in the SD card.

[0014] Furthermore, the RF signal is converted into a 1MHz intermediate frequency digital signal through the RF agile transceiver, and transmitted to the FPGA chip through the parallel port. The FPGA chip first performs digital filtering and extraction on the intermediate frequency digital signal, converting it into a low-frequency signal within 128kHz, and then uses a phase-locked loop to obtain the frequency and amplitude of the signal. Finally, it is transmitted to the MCU chip through the parallel port. The MCU chip compensates and average filters the obtained data to obtain signal power, signal-to-noise ratio and frequency deviation value, and finally completes the beacon receiver function;

[0015] The MCU chip reads external inertial navigation data through the RS422 interface to obtain antenna attitude information, and then combines it with the calculation results of the beacon receiver and uses the internal PI control algorithm to generate control signals, which are transmitted to the driver board through the CAN or IO interface.

[0016] Furthermore, the intelligent driver obtains control instructions through the CAN bus to drive the azimuth and pitch motors, and the drive module directly receives the IO control signal sent by the control board to drive the polarization motor.

[0017] Furthermore, the integrated management board controls the intelligent driver in the driver board through the connected CAN transceiver I and CAN transceiver II, and controls the driver module in the driver board through the IO control signal of the MCU chip.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention integrates the beacon receiver function into the servo drive board, eliminating the external beacon receiver module and related filter components, and greatly reducing the volume, weight and power consumption of the overall servo control platform.

[0020] The internal receiver supports a wide input frequency range (100MHz-4GHz) and can be used to receive signals in both L and S frequency bands.

[0021] The modular design is adopted to divide the servo control platform into three parts: integrated management, servo drive and antenna drive. When hardware problems occur, only the corresponding board needs to be replaced, which reduces the subsequent maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the hardware structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the assembly structure of the present invention. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.

[0025] An integrated mobile communication antenna servo control platform comprises a comprehensive management board S1, a control board S2 and a drive board S3.

[0026] The integrated management board integrates an ARM chip A1, an SD card A2, a CAN transceiver A3, an Ethernet transceiver A4 and a power supply circuit A5 to complete network port communication, data storage and program management functions.

[0027] The control board integrates a radio frequency agile transceiver B1, an FPGA chip B2, an MCU chip B3, a CAN transceiver B4, an RS422 transceiver B5 and a power supply circuit B6, and completes the beacon receiver, loop control and external communication functions. The radio frequency agile transceiver is connected to the FPGA via a parallel interface and an SPI interface, and the FPGA and the MCU are connected via a parallel interface.

[0028] The driving board comprises driving intelligent drivers C2 and C3, a driving module C1 and a power supply circuit C4. The intelligent driver realizes the driving of the azimuth and pitch motors, and the driving module realizes the driving of the polarization motor.

[0029] The management board, control board and driver board are stacked in three layers and connected via a 2.54mm pitch double-row pin-socket.

[0030] The management board controls the intelligent driver in the driver board through CAN, and controls the driver module in the driver board through IO control signals.

[0031] The integrated mobile communication antenna servo control platform includes two radio frequency input channels and supports an input frequency range of 100 MHz-4 GHz.

[0032] The integrated mobile antenna servo control platform has external interfaces including a CAN interface for communicating with a host computer, a 100M Ethernet interface, and an RS422 interface and a common IO interface for connecting with external sensors.

[0033] The integrated mobile antenna servo control platform according to claim 1 is characterized in that the RF agile transceiver uses ADI's AD9361, the FPGA uses Xilinx's XC7K325T-2FFG900, the MCU uses TI's TMS320F28335, the intelligent driver uses Elmo's Hornet driver, and the drive module uses TI's LMD18200.

[0034] like Figure 1 As shown, an integrated mobile communication antenna servo control platform of the present invention includes a comprehensive management board, a control board and a drive board.

[0035] The integrated management board integrates ARM chip, SD card, Ethernet transceiver, CAN transceiver and power circuit. The ARM chip runs the Linux operating system and is connected to the host computer through the 100M network with the help of Ethernet transceiver, and is connected to the host computer and control board through the CAN bus with the help of CAN transceiver. After receiving the control command from the host computer, the integrated management board parses it and transmits it to the control board through CAN. At the same time, the antenna status information sent by the control board is transmitted to the host computer through CAN or Ethernet and stored in the SD card.

[0036] The control board integrates RF agile transceiver, FPGA chip, MCU chip, CAN transceiver, RS422 transceiver and power supply circuit. The RF signal is converted into a 1MHz intermediate frequency digital signal by the RF agile transceiver, and transmitted to the FPGA chip through the parallel port. After the FPGA performs calculations, it is transmitted to the MCU through the parallel port. The MCU compensates and averages the data obtained to obtain the signal power, signal-to-noise ratio and frequency deviation value, and finally completes the beacon receiver function. The MCU reads the external inertial navigation data through the RS422 interface, obtains the antenna attitude information, and then combines the calculation results of the beacon receiver to generate the control signal using the internal loop algorithm, which is transmitted to the driver board through the CAN or IO interface.

[0037] The driver board integrates 2 intelligent drivers, 1 driver module and power supply circuit. The intelligent driver obtains control instructions through the CAN bus to drive the azimuth and pitch motors. The driver module directly receives the IO control signal sent by the control board to drive the polarization motor.

[0038] The power supply circuits of the integrated management board, control board and driver board are used to provide different levels of voltage to the chip to meet the chip power supply requirements.

[0039] like Figure 2 As shown, the integrated management board, control board and drive board are assembled in a three-layer stacked structure, connected by a 2.54mm double-row pin-socket combination, and reinforced by screws to form a servo control platform.

[0040] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. An integrated mobile communication antenna servo control device, characterized in that: It includes an integrated management board (S1), a control board (S2) and a drive board (S3); The integrated management board integrates an ARM chip (A1), an SD card (A2), a CAN transceiver I (A3) and an Ethernet transceiver (A4), and is used to realize network port communication, data storage and integrated program management functions; The control board integrates a radio frequency agile transceiver (B1), an FPGA chip (B2), an MCU chip (B3), a CAN transceiver II (B4) and an RS422 transceiver (B5), and is used to realize beacon reception, loop control and external communication functions; the radio frequency agile transceiver (B1) and the FPGA chip (B2) are connected via a parallel interface and an SPI interface, and the FPGA chip (B2) and the MCU chip (B2) are connected via a parallel interface; The driving board integrates a driving module (C1), two intelligent drivers and a power supply circuit (C4); the two intelligent drivers are used to drive the azimuth and pitch motors respectively, and the driving module is used to drive the polarization motor; The integrated management board, control board and drive board are stacked in sequence, and adjacent boards are connected via double-row pins and sockets with a spacing of 2.54 mm.

2. The integrated mobile communication antenna servo control device according to claim 1, characterized in that: The ARM chip runs the Linux operating system, is connected to the host computer via a 100M Ethernet transceiver, and is connected to the host computer and the control board via a CAN transceiver; the ARM chip is used to realize Ethernet data interaction, data storage, and program management functions; After receiving the control command from the host computer, the ARM chip parses it and then transmits it to the control board via CAN. At the same time, the antenna status information sent by the control board is transmitted to the host computer via CAN or Ethernet and stored in the SD card.

3. The integrated mobile communication antenna servo control device according to claim 1, characterized in that: The RF signal is converted into a 1MHz intermediate frequency digital signal by the RF agile transceiver and transmitted to the FPGA chip through the parallel port. The FPGA chip first performs digital filtering and extraction on the intermediate frequency digital signal and converts it into a low-frequency signal within 128kHz. Then, the phase-locked loop is used to obtain the frequency and amplitude of the signal. Finally, it is transmitted to the MCU chip through the parallel port. The MCU chip compensates and averages the obtained data to obtain the signal power, signal-to-noise ratio and frequency deviation value, and finally completes the beacon receiver function. The MCU chip reads external inertial navigation data through the RS422 interface to obtain antenna attitude information, and then combines it with the calculation results of the beacon receiver to generate control signals using the internal PI control algorithm, which is transmitted to the driver board through the CAN or IO interface.

4. The integrated mobile communication antenna servo control device according to claim 1, characterized in that: The intelligent driver obtains control instructions through the CAN bus to drive the azimuth and pitch motors. The drive module directly receives the IO control signals sent by the control board to drive the polarization motor.

5. The integrated mobile communication antenna servo control device according to claim 1, characterized in that: The integrated management board controls the intelligent driver in the driver board through the connected CAN transceiver I and CAN transceiver II, and controls the driver module in the driver board through the IO control signal of the MCU chip.

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