High-speed industrial communication system and node circuit thereof

A node circuit and industrial communication 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, and network failure, etc., and achieve strong anti-multipath interference ability , to ensure the effect of stable reception

Inactive 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
  • Application Information

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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
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  • High-speed industrial communication system and node circuit thereof
  • High-speed industrial communication system and node circuit thereof
  • High-speed industrial communication system and node circuit thereof

Examples

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Embodiment Construction

[0032] 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.

[0033] 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 and a node circuit thereof. The node circuit comprises a signal processing circuit and a controller, wherein the signal processing circuit performs signal processing on an input signal and an output signal of the node, and comprises an automatic gain control circuit; and the controller is connected with the signal processing circuit, controls the output signals to the node or receives the input signal from the node, and performs OFDM modulation on the signal. According to the node circuit of the high-speed industrial communication system, due to the fact that each node circuit has an AGC function, attenuation of the signal in the transmission process on the two-wire system annular bus is compensated for due to the AGC function, or amplitude overrun is compressed due to the AGC function. Thus, stable receiving of the signals is guaranteed, an OFDM modulation mode is used in the two-wire system annular field bus, and theanti-multipath interference capability is high.

Description

technical field [0001] The application relates to the field of industrial communication, in particular to a high-speed industrial communication system and its node circuits. 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 Area Network) field industrial control bus. Its transmission rate is low, about 10kbps ~ 1Mbps, so the real-time performance of data transmission is poor and cannot meet the high bandwidth requirements. In addition, the bus-type topology has a limit on the length of the bus, because the farther the transmission distance, the more serious the signal attenuation. [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 stabili...

Claims

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Application Information

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IPC IPC(8): H04L12/40H04L12/437H04L27/26
CPCH04L12/40006H04L12/40013H04L12/40182H04L12/437H04L27/2601
Inventor 邵枝晖崔博
Owner 北京神经元网络技术有限公司
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