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Scientific grade ccd gigabit ethernet communication system and method based on ax88180

An AX88180, Gigabit Ethernet technology, applied in the field of high-speed image transmission and control systems, can solve the problems of image data loss, 100M network communication congestion, crash and other problems, to achieve increased communication bandwidth, low cost, and cost savings. Effect

Active Publication Date: 2020-05-12
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of communication blockage or even collapse in the existing 100M network in the existing image transmission system, resulting in the loss of image data collected by the equipment, and to provide a scientific grade CCD Gigabit Ethernet communication system based on AX88180 and The method, the system and method can realize the interconnection between the scientific grade CCD and the PC upper computer through a gigabit network, can transmit the image data collected by the scientific grade CCD to the PC upper computer at high speed, and can realize the control command reception of the PC upper computer , command analysis, command processing, command return, and can realize UDP, ARP, ICMP (realize ping function) and other network protocols, and can check whether the network is blocked by sending heartbeat packets, and make corresponding processing

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  • Scientific grade ccd gigabit ethernet communication system and method based on ax88180
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  • Scientific grade ccd gigabit ethernet communication system and method based on ax88180

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Embodiment Construction

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0036] like figure 1 , figure 2 The shown scientific grade CCD Gigabit Ethernet communication system based on AX88180 includes network communication circuit board and at least one FPGA circuit board; FPGA circuit board includes FPGA chip, EEPROM chip and SDRAM chip, FPGA chip and EEPROM chip are connected according to IIC protocol , the SDRAM chip is connected to the FPGA chip for data storage; the ordinary IO interface of the FPGA is connected to another circuit board, and leads to the same pins as the other circuit board. The network communication circuit board includes the MAC layer chip and the PHY layer connected in sequence Chip and RJ-45 interface with network isolation transformer, MAC layer chip is AX88180, PHY layer chip is 88E1111; RJ-45 interface is used to connect to the network cable, the interface between MAC la...

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Abstract

The invention relates to an AX88180-based scientific-grade CCD Gigabit Ethernet communication system and method and the problem of loss of image data collected by equipment caused by communication congestion or even collapse in a 100-mega network in an existing image transmission system is solved. The system comprises a network communication circuit board and an FPGA circuit board. The FPGA circuit board comprises an FPGA chip, an EEPROM chip and an SDRAM chip. The FPGA chip and the EEPROM chip are connected according to an IIC protocol, and the SDRAM chip is connected to the FPGA chip for data storage. The network communication circuit board comprises an MAC layer chip, a PHY layer chip and an RJ-45 interface connected in sequence. The MAC layer chip is AX88180, and the PHY layer chip is88E1111. The data collected by the FPGA chip is transmitted to the MAC layer chip and the PHY layer chip and is transmitted a PC upper computer through the RJ-45 interface. The FPGA chip includes a network initialization module, a packet unpacking module, a network protocol module, a command parsing module, a control scheduling module and an EEPROM parameter access module. The invention also provides a method for realizing scientific-grade CCD Gigabit Ethernet communication based on the above system.

Description

technical field [0001] The present invention relates to the field of high-speed image transmission and control systems, in particular to a scientific grade CCD Gigabit Ethernet communication system and method based on AX88180. The system and method control the AX88180 chip and PHY layer chip through FPGA to realize Gigabit Ethernet communication , and run the communication scheme of the communication protocol inside the FPGA. Background technique [0002] In scientific research, objects are often observed and quantitatively analyzed under low-light conditions. At this time, instruments and equipment with high sensitivity, low noise, high linearity, and large dynamic range are required to collect and process image data, and image data acquisition Whether it can be timely and accurately transmitted to the PC host computer will directly affect the practicability, reliability and image data index of the image acquisition equipment. In addition, some observation conditions may e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L65/1013H04L65/80
Inventor 王彦超张伟刚寇经纬李刚余建成
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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