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Portable Fieldbus Module and Its System

A field bus and bus technology, applied in the field of CAN bus communication, can solve problems such as the limitation of the number of cables, achieve the effects of low forwarding delay, and save the number of wires and connectors

Active Publication Date: 2020-09-01
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an energy-carrying field bus module and its system, which solves the problem that the field bus still needs at least four wires and is limited by the number of cables in the prior art

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  • Portable Fieldbus Module and Its System
  • Portable Fieldbus Module and Its System
  • Portable Fieldbus Module and Its System

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] Fieldbus (Power Over CAN) module, Power Over CAN is denoted as Po-CAN, composed of Po-CAN bus transceiver 1 and Po-CAN bus terminal 2;

[0033] The Po-CAN bus transceiver 1 is used to modulate and demodulate the data on the Po-CAN bus / power line, and complete data modulation and multiplexing of the power supply of the Po-CAN bus / power line;

[0034] Po-CAN bus terminal 2 is used to realize the isolation of the data signal and the power supply of the Po-...

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Abstract

The invention discloses an energy-carrying field bus module and an energy-carrying field bus system. The energy-carrying field bus module is composed of a Po-CAN bus transceiver and a Po-CAN bus terminal. The energy-carrying field bus system comprises an energy-carrying field bus module, wherein a Po-CAN node is formed by the Po-CAN bus transceiver, an internal equipment power system, a power supply and a CAN bus controller; N parallel Po-CAN nodes are connected with a Po-CAN bus / power line of the energy-carrying field bus system; the power supply end of the Po-CAN bus terminal is connected with a power supply of the energy-carrying field bus system or not connected with the power supply of the energy-carrying field bus system. According to the module and system provided by the invention,when data is transmitted, the power supply is also transmitted on the pair of transmission lines under the condition of keeping compatibility with a CAN bus system, and a self-monitoring function is achieved, so that the compatibility with the standard CAN bus transceiver in the physical layer is achieved, and a protocol layer and an application layer do not need to be modified in the application.

Description

technical field [0001] The invention belongs to the technical field of CAN bus communication, in particular to an energy-carrying field bus module and a system thereof. Background technique [0002] CAN bus (Controller Area Network) is currently one of the most widely used field buses. It is not only widely used in industrial control and automotive electronic systems, but also widely used in aerospace vehicles, aerospace vehicles, and weapon systems. Although the bus system eliminates the need for parallel cables, at least four wires (two wires for power and two wires for differential data) are required for the field bus. In application scenarios with extremely limited load weight and space, such as in spacecraft / aircraft, It is hoped to further save space and volume, but will still be limited by the number of cables. Contents of the invention [0003] The purpose of the present invention is to provide an energy-carrying field bus module and its system, which solves the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40
CPCH04L12/40006H04L2012/40215
Inventor 谢楷权磊刘少伟刘艳徐越
Owner XIDIAN UNIV