Synchronization method and device for high-speed industrial communication system, network equipment and storage medium

Abstract

The embodiment of the invention discloses a synchronization method and device for a high-speed industrial communication system, network equipment and a storage medium. Control equipment broadcasts a frame header synchronous pilot signal, the frame header synchronous pilot signal comprises two continuous synchronous OFDM symbols, and frequency domain subcarriers of the two synchronous OFDM symbolsload the same pilot sequence. The synchronization method comprises the following steps: extracting continuous first and second target synchronization OFDM symbols; performing time domain autocorrelation operation on the first target synchronous OFDM symbol; and determining the initial moment of the signal according to the result of the time domain autocorrelation operation. According to the high-speed industrial communication system and method, the problems that an industrial field traditional bus is low in bandwidth, cannot simultaneously bear real-time and non-real-time and is complex in network structure can be solved, IPV6 address communication is supported, time triggered industrial communication is supported, and TSN, white list, deep detection, data encryption and other safety mechanisms are supported.

Description

technical field [0001] The embodiments of the present application relate to the field of industrial communication and control, and in particular to a synchronization method, device, network device and storage medium for a high-speed industrial communication system. Background technique [0002] In the industrial field, multiple industrial devices (such as measuring instruments) are usually connected to the high-speed industrial control bus, and each industrial device can communicate through the high-speed industrial control bus, such as transmitting control signals, to control industrial equipment for industrial production activities . [0003] The high-speed industrial control bus has high requirements for real-time data transmission, and industrial equipment needs time synchronization (for example, time synchronization, clock synchronization, carrier frequency synchronization) to achieve high-precision industrial production activities. At present, most of the high-speed i...

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Problems solved by technology

At the same time, the complexity and difficulty of data transmission are also greatly increased

In response to the above problems, NPT is affected by factors such as queue delay, switching delay, and medium access delay, and the error of time synchronization becomes larger, which cannot meet the current needs of real-time data transmission.

At the same time, IEEE1588 is affected by oscillator frequency errors, network symmetry, and network delays, and the error of time synchronization becomes larger, which cannot and cannot meet the current needs of real-time data transmission.

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