SOC-based dual-gigabit Ethernet transmission method and system in DAS system
A technology of Gigabit Ethernet and transmission method, applied in the field of distributed optical fiber vibration sensing, can solve the problems of high power consumption, uncompetitive cost, low integration of DAQ units, etc., and achieve the effect of cost advantage
Inactive Publication Date: 2020-12-25
BANDWEAVER TECH CO LTD +1
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The disadvantages of this implementation method are: the DAQ unit is not highly integrated, the power consumption is large, and the cost is not competitive
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[0023] 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.
[0024] This embodiment provides a SOC-based dual Gigabit Ethernet transmission system in a DAS system, which is implemented with the dual Gigabit Ethernet transmission system, and aims to implement signal analysis and processing of two detection optical fibers. Dual Gigabit Ethernet transmission system includes photoelectric converter, analog-to-digital converter, FPGA module, #0ARM core, #1ARM core, Share memory module, Bare core memory module and Linux memory...
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The invention discloses an SOC-based dual-gigabit Ethernet transmission method and system in a DAS system. The method comprises the following steps: 1, carrying out photoelectric conversion and analog-to-digital conversion on an optical signal emitted by a detection optical fiber to obtain a digital signal; 2, sending the digital signals of the two detection optical fibers subjected to filtering and noise reduction processing to two ARM core processors respectively, wherein the two ARM core processors are defined as # 0 ARM core and # 1 ARM core respectively, the # 0 ARM core loads a Linux processing system, and the # 1 ARM core does not run an operating system; 3, performing inter-core communication by the # 0 ARM core and the # 1 ARM core to realize synchronization of information interaction and operation, and configuring and managing, by the # 0 ARM core, a non-processing unit in a DU unit and realizing message interaction with the PU unit; and 4, transmitting, by the # 0 ARM core and the # 1 ARM core, the processed signals to a PU unit. According to the method, the signal processing and high-speed transmission requirements of two optical fibers required by DAS and DU are realized, and the system has great advantages in the aspects of integration level, power consumption and cost.
Description
technical field [0001] The invention belongs to the technical field of distributed optical fiber vibration sensing, and specifically relates to a transmission method for realizing high-speed reliable data through Gigabit Ethernet, and more specifically relates to a method based on an SOC chip to realize dual-channel Gigabit Ethernet data transmission. Solve the requirements of high-speed and reliable data transmission of DAS system. Background technique [0002] The basic principle of the DAS system is to send a laser pulse of a specific wavelength (1550nm) into the fiber, and receive the back Rayleigh scattering (Rayleigh scattering) signal generated when the laser pulse propagates along the fiber. The external vibration along the fiber will cause various vibrations in the fiber Effects, such as: stretching, bending, refractive index changes, etc., these effects are reflected in the Rayleigh backscattering signal, therefore, the vibration along the optical fiber can be sens...
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IPC IPC(8): H04B10/27G06F9/54G06F9/52G06F9/50H04L29/06H04Q11/00
CPCG06F9/5016G06F9/52G06F9/546H04B10/27H04L69/163H04Q11/0062H04Q2011/0079Y02D10/00
Inventor 方立新张成先韩岩松赵浩
Owner BANDWEAVER TECH CO LTD