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High-speed industrial communication system based on OFDM

An industrial communication, high-speed technology, applied in the transmission system, multi-frequency code system, digital transmission system, etc., can solve the problems of loss of redundancy function, signal failure, failure of the whole network, etc., and achieve strong anti-multipath interference ability, Improve system robustness and the effect of high-reliability data transmission

Pending Publication Date: 2021-02-19
北京神经元网络技术有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

like figure 1 As shown, if the TN2 node fails, the signal sent from the TN1 node to the TN3 node cannot reach the TN3 node, and even the signals sent from all nodes to the TN3 node cannot reach the TN3 node, that is, once a node fails, it will cause the entire network to fail
The signal sent from the TN3 node to the TN1 node can reach the TN1 node, but at this time the ring network will become a long-line topology, thus losing the redundancy function, so the daisy-chain topology is limited to some applications with a small number of nodes in a short distance

Method used

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  • High-speed industrial communication system based on OFDM
  • High-speed industrial communication system based on OFDM
  • High-speed industrial communication system based on OFDM

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Embodiment Construction

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus their repeated descriptions will be omitted.

[0035] The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of the embodiments of the application. However, those skilled in the art will appreciate that the technical solutions of the present application can be practiced without one or more of these sp...

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Abstract

The invention provides a high-speed industrial communication system based on OFDM and a control method. The high-speed industrial communication system based on the OFDM communication system comprisesa plurality of node devices and at least one two-wire system field bus. Transmission ports of the node devices are connected to the two-wire system annular field bus. The plurality of node devices areconfigured to communicate with each other in an OFDM modulation mode. Each node device sends modulated data signals to the two-wire system annular field bus in a broadcast mode, and the other node devices directly receive the data signals from the two-wire system annular field bus. The two-wire system annular field bus based on OFDM is used so that the problem of network disconnection caused by accidental disconnection of bus nodes or transmission lines can be effectively solved, meanwhile, high multi-path interference resistance is achieved, and multi-user, high-real-time and high-reliability data transmission can be achieved.

Description

technical field [0001] The present application relates to the field of industrial communication, in particular to an OFDM-based high-speed industrial communication system. Background technique [0002] In the existing industrial communication network, the network topology based on the industrial field bus protocol includes bus type, tree type, ring type, etc. [0003] The bus-type topology is mainly represented by the CAN (Controller Area Network, controller local area network) field industrial control bus, that is, a pair of twisted-pair wires can connect multiple sensors and actuators, and can realize ring networking. This type of bus is usually data The transmission rate is low, about 1Mbps to 12Mbps, so the real-time performance of data transmission is poor and cannot meet the high bandwidth demand. [0004] The tree topology bus can connect more devices on the bus branch through relay or agent, but the network structure is complex, and the network stability and reliabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/437H04L27/26
CPCH04L12/437H04L41/0677H04L41/12H04L41/0654H04L27/2601
Inventor 邵枝晖崔博
Owner 北京神经元网络技术有限公司
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