Method of achieving satellite serial port communication

A serial port communication and satellite technology, which is applied in the field of satellite communication, can solve the problems of reduced system reliability, low transmission accuracy, complex structure, etc., and achieve the effects of reducing volume and weight, improving communication accuracy, and compact structure

Active Publication Date: 2013-04-24
上海航天控制工程研究所
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Problems solved by technology

In the previous satellite serial communication, a dedicated serial-to-parallel conversion chip is usually used to realize the serial communication between the satellite and the slave equipment. The transmitted data is very long, which will greatly affect the working efficiency of the CPU and reduce the reliability of the system; the increase of devices will also affect the reliability of the system; the structure is complex, large and heavy, and the transmission accuracy is low, which is difficult to adapt to the satellite system Therefore, it is imperative to develop a new serial communication method

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  • Method of achieving satellite serial port communication
  • Method of achieving satellite serial port communication
  • Method of achieving satellite serial port communication

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Embodiment Construction

[0022] see figure 1 , is a block diagram of the serial port communication structure of the present invention, including a host computer module, an antifuse field programmable logic device FPGA chip whose model is A54SX72A, a digital signal processing DSP chip whose model is TMS320VC33, a differential signal conversion chip whose model is MAX3070E, and a host computer Send instructions to the control torque gyroscope. The instructions sent from the host computer are two-way differential signals, which are converted into one-way serial signals through the differential signal conversion chip of MAX3070E. Serial signals are transmitted in bytes, and one command is one The frame is decoded by the FPGA chip of the anti-fuse field programmable logic device. After judging that a frame command is received, an interrupt signal is generated to the DSP chip. Through bus interaction, the DSP chip reads the FPGA chip of the anti-fuse field programmable logic device The data stored in the co...

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Abstract

The invention discloses a method of achieving satellite serial port communication which includes the following steps: an upper computer sends control command, and a conversion chip converts differential signals into serial signals; a serial port receiving procedure achieved in a field programmable gata array (FPGA) chip of an anti-fuse site receives and decodes the serial signals; a digital signal processor (DSP) chip after data processing sends back working status information of a control moment gyro to the FPGA chip; reading back command of the DSP chip, sending the encoded back command according to serial data frame format bitwise, converting the back command into two routes of differential signals to be sent to the upper computer by the differential signal conversion chip, and achieving communication of the upper computer and the control moment gyro. The method of achieving the satellite serial port communication has the advantages of being capable of effectively achieving the communication of the upper computer and the control moment gyro, improving communication accuracy, speed and reliability, reducing size and weight, adjusting satellite attitude in real time and ensuring ordinary operation of the satellite.

Description

technical field [0001] The invention relates to satellite communication technology, in particular to a method for realizing satellite serial port communication, which is used in large-scale satellites or actuator control moment gyroscopes that require maneuvering satellites and spacecraft attitude control systems. Background technique [0002] During the operation of the satellite, the satellite attitude and orbit control system constantly adjusts its attitude in real time to meet the needs. As the main performer of the attitude and orbit control system, the control moment gyroscope must continuously receive commands from the satellite to provide different moments. Output and feed back information such as its own working status to the satellite in real time, so that the satellite can work with high reliability, and the information exchange between them is completed through serial communication. In the previous satellite serial communication, a dedicated serial-to-parallel co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/38
Inventor 周华俊李佳亮魏新生
Owner 上海航天控制工程研究所
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