Moonlet CAN bus monitoring system

Abstract

A moonlet CAN bus monitoring system comprises a zero-slot controller installed inside a PXI case, and a CAN bus data acquisition card. The CAN bus data acquisition card collects data on a moonlet CAN bus in real time through a CAN cable and transmits the data to the zero-slot controller through a PXI bus. The zero-slot controller comprises a configuration module, a receiving module, an analyzing module, a display module, a storage module and an inquiry module. The monitoring system achieves the modularization and card and board modes of a CAN bus monitor and can be integrated into the PXI case with other testing devices to form integrated testing equipment, and the better integration and portability are achieved. The original data of the CAN bus are analyzed through the zero-slot controller, messages such as a polling control sequence, a telemetry package, an indirect instruction, an uplink data block and a broadcast message are displayed and stored in a classified mode, and inquiry of the data of the CAN bus and the problem location in the moonlet testing process are convenient.

Description

technical field [0001] The invention relates to a small satellite CAN bus data processing system based on PXI bus. Background technique [0002] CAN bus is an important part of the small satellite star service system, that is, the star service system coordinates and controls the interconnection of on-board devices through the CAN bus-based field network, and completes dynamic operations including information flow, action flow, and energy flow. During the satellite test process, the system faults can be analyzed and located to find hidden dangers by monitoring the data flow information on the CAN bus. [0003] In the existing CAN bus monitor, its historical data is stored in a text file in the unit of the original frame, and the frame data is not classified and unpacked. In the process of query and troubleshooting, only a large amount of data can be Search frame by frame, the query speed is slow, and it is difficult to locate the problem. At the same time, the existing CAN ...

AI Technical Summary

Problems solved by technology

Considering the characteristics of small size and short development cycle of small satellites, combined with the short development cycle and large quantity of small satellites in the future, the small satellite test system is required to have the characteristics of small size, high integration, and rapid construction. However, the existing CAN bus Monitors are obviously unable to meet the above requirements

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