Data acquisition and communication system suitable for small satellite controller local area network

Abstract

The invention relates to a data acquisition and communication system suitable for a small satellite controller local area network. The system comprises a power management module, a central control unit, a bidirectional bus transceiver, a control area network (CAN) bus controller and a CAN bus transceiver, and further comprises an analog / digital (A / D) acquisition module and an input interface filter circuit, wherein the power management module is used for supplying power to the whole system; the central control unit is used for controlling the bidirectional bus transceiver, the CAN bus controller and the A / D acquisition module; the bidirectional bus transceiver is used for performing chip level conversion; the CAN bus controller supports CAN bus technical regulations; the CAN bus transceiver is directly and electrically connected with a physical bus; the CAN bus controller and the CAN bus transceiver realize data communication through two data transceiving wires; the A / D acquisition module is used for acquiring analog data, converting the analog data into digital data and inputting the digital data to the central control unit; and the input interface filter circuit performs analog filtering. The A / D acquisition module is used for performing satellite analog acquisition to obviously extend a dynamic acquisition range and reduce energy consumption. The system has the advantages of the realization of the satellite digital and analog acquisition and communication, and high extendibility and reliability.

Description

technical field [0001] The invention relates to a data collection and communication device on a satellite, in particular to a data collection and communication system suitable for a small satellite controller local area network. Background technique [0002] Small satellites refer to satellites weighing less than 1,000 kilograms, and their orbits are mostly located in the space area within 1,000 kilometers. Small satellites are not only used in communication, remote sensing, astronomy and other aspects. It is also suitable for conducting new technology experiments, and it is easy to form a constellation of satellites in different orbits, so as to achieve functions that cannot be achieved by a single satellite. Due to the advantages of low cost, short launch cycle, flexible maneuverability, easy update and wide application, small satellites are attracting more and more attention from more and more countries in the world. [0003] Currently, one of the most commonly used and...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the existing aerospace-grade anti-radiation devices that are far from being able to meet the needs of the current space vehicle high-performance system, thereby providing a commercial device (comprising A / D acquisition chip, CAN bus control) using military temperature grade commercial devices. device), especially suitable for data acquisition and communication system of small satellite controller local area network, the system can realize the acquisition and communication of digital and analog quantities

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