Marine engine room monitoring and alarming system with redundant CAN (control area network) bus

Abstract

The invention designs a novel marine engine room monitoring and alarming system with a redundant CAN (control area network) bus. The system comprises an on-site analog quantity acquisition module, an on-site digital quantity acquisition module, a communication network, a network protocol converter and an alarming unit. The on-site analog quantity acquisition module uses a modular design method, and is used for acquiring analog quantity parameters of devices in operation in the marine engine room, wherein the acquisition process comprises common measurements of analog quantity signals commonly used in the industry, such as the measurement of analog voltage signals, the measurement of 4-20 mA current signals, and the like; the on-site digital quantity acquisition module also uses the modular design method, and is used for acquiring digital quantity parameters of the devices in operation in the marine engine room, wherein the acquisition process comprises common measurements of the digital quantity commonly used in the industry, such as the measurement of a digital switch value, the measurement of a digital pulse value, and the like; the communication network is designed into a redundant CAN bus network to ensure the reliable transmission of data; the network protocol converter is used for solving quantity limitation on CAN nodes, and an RS458 network can be used for expansion under the CAN nodes; and the alarming unit is used for providing alarming signals in time according to abnormality of the parameters of the devices in operation.

Description

technical field [0001] The invention relates to a ship engine room monitoring and alarm system, which belongs to the technical field of navigation equipment. Background technique [0002] In recent years, my country's shipbuilding industry has achieved rapid development. However, with the development of the shipbuilding industry and the continuous improvement of the automation level of the engine room, my country's navigation equipment manufacturing field needs to be developed urgently. In order to improve the safety and economy of ship navigation, the engine room monitoring system is installed on both manned and unattended ships. The engine room monitoring system is composed of multiple subsystems, mainly including engine room monitoring and alarm system, automatic power plant management system, host monitoring and alarm system, vehicle cabin channel equipment monitoring and alarm system, adjustable slurry monitoring and alarm system, main diesel , lubricating oil separat...

AI Technical Summary

Problems solved by technology

[0004] 1. Using PLC as the core control component, the computing performance is poor;

[0005] 2. The system structure is complex, the amount of cables is too much, and the cost is high

[0006] 3. It is inconvenient to extend the alarm

[0007] 4. When the communication line fails, nothing can be done

Images