CAN bus terminal resistor automatic matching design method for boxed missile

Abstract

The invention discloses a CAN bus terminal resistor automatic matching design method, which is mainly used for automatically matching a terminal resistor on a farthest-end box-loaded missile when a launching system communicates with a plurality of box-loaded missiles by adopting a CAN bus, and realizes the universal design of the box-loaded missiles while meeting the terminal resistor setting requirement of a CAN bus communication network. The automatic matching design method is adopted, generalization of the boxed missile can be achieved, and the problems that according to a traditional design method, resistance needs to be added to the farthest-end boxed missile, so that the boxed missile is not universal, and the technical state is not unified are solved; a simple mechanical and electrical combination mode is adopted, when the box-loaded missile is cascaded, automatic open circuit of a resistor on a cascaded terminal is ensured, a resistor on a terminal at the farthest end is in place, and the method is good in economical efficiency and high in reliability.

Description

technical field [0001] The invention belongs to the electrical technical field of weapon systems, and mainly relates to an automatic matching design method for CAN bus terminal resistance used for boxed missiles. Background technique [0002] When CAN communication is used, a 120Ω terminal resistance needs to be matched at the terminal of the main line. In a weapon system based on CAN bus, CAN bus is used for information interaction between the launch system and missiles. When the launch system communicates with multiple missiles using a linear topology , it is necessary to consider the setting of the terminal resistance of the CAN bus network. Generally, the terminal resistance needs to be set at the farthest end. The traditional method is to set a matching resistance at the farthest terminal of the cable network, or independently design a terminal resistance terminal. The farthest missile is connected, or the missile is designed into two types, one without terminal resista...

AI Technical Summary

Problems solved by technology

[0005] The terminal resistance automatic matching method designed by the method of the present invention solves the problem of cascading multiple boxed missiles, and through mechanism design, the terminal resistance always works on the farthest missile, the degree of generalization is improved, and the external dependence is greatly reduced , enhances the convenience of operation

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