A micro-satellite CAN bus test device with anti-interference function and application method

Abstract

The invention discloses a micro-satellite CAN bus test device with an anti-interference function and an application method. The device of the invention includes an internal and external CAN test interface and a ground CAN test network. The internal and external CAN test interface includes a T-shaped cable and a CAN isolation transponder , the T-type cable connects the CAN isolation transponder between the on-board computer of the CAN bus network on the star and the dual CAN interfaces of the star table CAN equipment, and the ground CAN test network includes a three-section ground survey cable, an external DC A power supply and a plurality of ground testing devices, the multiple ground testing devices are connected to the CAN isolation transponder through a three-section ground testing cable. The invention can effectively improve the convenience and stability of the micro-satellite CAN bus test, ensure the consistency between the micro-satellite internal bus and the on-orbit state, and reduce the interference of the ground test network to the working state of the CAN bus on the star.

Description

technical field [0001] The invention belongs to the technical field of spacecraft comprehensive electronics and testing, and relates to a micro-satellite CAN bus testing device with an anti-disturbance function and an application method. Background technique [0002] Controller Area Network CAN (Controller Area Network) is a serial communication field bus proposed by Bosch in the early 1980s. It was originally mainly used to realize data communication between numerous control and measuring instruments in automobiles. With the popularization of CAN applications, its advantages such as good real-time performance, high reliability, and strong anti-interference ability are also recognized by the aerospace field, and are widely used in the aerospace field. It has been introduced into the integrated electronic system at home and abroad, and a large number of micro-satellites have used the CAN bus as the backbone network on the star to complete the information exchange between the ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a micro-satellite CAN bus test device with an anti-interference function and an application method. The present invention aims to solve the lack of scientific guidance in the existing micro-satellite CAN bus test scheme, and it is difficult to take into account the convenience of assembly , communication reliability and environmental adaptability, improve the convenience and stability of the CAN bus test of micro-satellites, ensure the consistency between the internal bus of micro-satellites and the on-orbit status, and reduce the interference of the ground test network on the working status of the CAN bus on the satellite

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