CAN bus-based communication method of control instruments of ship power station

A technology of CAN bus and power station control, applied in the direction of electrical program control, bus network, comprehensive factory control, etc., can solve the problem that CAN-BUS has no application layer protocol regulations, and achieve the effect of improving flexibility, simple use, and standard format

Inactive Publication Date: 2012-10-10
SHANGHAI MARITIME UNIVERSITY
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  • Abstract
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  • Claims
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Problems solved by technology

[0010] However, CAN-BUS does not make specific regulations on the application layer protocol

Method used

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  • CAN bus-based communication method of control instruments of ship power station
  • CAN bus-based communication method of control instruments of ship power station
  • CAN bus-based communication method of control instruments of ship power station

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Embodiment Construction

[0031] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0032] When the working condition of the ship power station changes, multiple parameters generally change, and the transmission data is coded according to the multiple parameters of the working condition, so that the closely related parameters are combined together, and the identification codes are used to represent the parameters of different working conditions to achieve a reasonable combination of parameters. Parameter types include byte variable, integer variable, single-precision variable, double-precision variable and character variable, occupying one byte, two bytes, four bytes, eight bytes and multiple bytes respectively. For single , The double-precision variables adopt IEEE754 standard programming.

[0033] SJA1000 acceptance filter co...

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Abstract

The invention discloses a CAN bus-based communication method for control instruments of a ship power station. In the method, a CAN bus is controlled by an acceptance filter and the communication between the control instruments of the ship power station is realized by an improved CAN protocol; and the improved CAN protocol is realized by redefining an identifier. The communication protocol for CANbus-based intelligent control instruments of the invention obtained by the technical scheme is provided with easy use, standard format and complete information and can be used as a broadcast or multicast address together with a filter, which contributes to the improvement on the flexibility of the communication; and meanwhile, the communication method has wide practicability and high market value.

Description

Technical field: [0001] The present invention relates to CAN bus-based intelligent instrument networking technology, relates to a CAN bus-based intelligent control instrument communication protocol and a method for multi-address frame transmission, and is especially suitable for CAN bus ship power station control instrument communication Background technique: [0002] Fieldbus (Field Bus) is the most active field in the field of industrial data bus at present and has become a new hot spot in the field of industrial data bus. CAN (Controller Area Network) bus is one of the important field buses. It complies with the OSI model and mainly works at the data link layer and physical layer. CAN bus is an all-digital bidirectional and multi-master field bus, which has been paid more and more attention by people because of its high performance, high reliability and flexible design. [0003] CAN (Controller Area Network) bus has been widely used in various automation control systems....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40H04L12/56H04L29/08G05B19/418
CPCY02P90/02
Inventor 夏永明
Owner SHANGHAI MARITIME UNIVERSITY
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