Method and system for environmental monitoring of multiple groups of rocket bodies based on can bus

Abstract

The invention provides a multi-set rocket body container environment monitoring method and system based on a CAN bus. The method comprises the steps that an environment monitoring server host is connected with preset number of lower computer monitoring control modules through 16 paths of controller area network buses, and an environment monitoring server standby unit is connected with the preset number of lower computer monitoring control modules through 16 paths of CAN buses; the environment monitoring server host and standby unit are connected with a pressure supplementing server; the environment monitoring server host and standby unit simultaneously receive pressure monitoring data transmitted by the lower computer monitoring control modules; the environment monitoring server host holds the right of communication with the pressure supplementing server and transmits the pressure monitoring data to the pressure supplementing server and transmits heartbeat frames to the environment monitoring server standby unit in preset periods; and if the standby unit does not receive the heartbeat frames transmitted by the host within preset time, the environment monitoring server standby unit acquires the right of communication with the pressure supplementing server and transmits the pressure monitoring data to the pressure supplementing server.

Description

technical field [0001] The invention relates to the electrical field, in particular to a CAN bus-based method and system for monitoring the environment of multiple groups of rocket-body containers. Background technique [0002] The marine environmental monitoring system is an environmental protection and monitoring equipment for rocket-body containers. It is mainly used for the adjustment and control of the internal temperature and humidity of the container carrying the rocket body, and the monitoring of the pressure of the rocket body storage box, etc. during the XX-5 carrier rocket's transportation from Xingang, Tianjin to Qinglan Port, Hainan. [0003] Since the number of monitoring containers per transport ship is 5, according to the traditional monitoring method, it is necessary to equip the same number of servers and connect one-to-one through the CAN (ControllerArea Network, Controller Area Network) bus, and because different container monitoring points Therefore, it...

AI Technical Summary

Problems solved by technology

When the CAN bus fails, the bus cable needs to be replaced. When the container is changed, the server monitoring software needs to be changed. The later maintenance workload is relatively large.

However, using a single-channel CAN bus to connect multiple nodes, for a marine environmental monitoring system with a baud rate of 250K and a distance between monitoring points of 200 meters, the communication reliability of the system cannot be satisfied.

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