CN111131217A - High-speed optical fiber data recorder based on SD card - Google Patents

High-speed optical fiber data recorder based on SD card Download PDF

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Publication number
CN111131217A
CN111131217A CN201911314521.3A CN201911314521A CN111131217A CN 111131217 A CN111131217 A CN 111131217A CN 201911314521 A CN201911314521 A CN 201911314521A CN 111131217 A CN111131217 A CN 111131217A
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module
optical fiber
packet distribution
ddr3
cache
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CN111131217B (en
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陈威亨
王昊
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/164—Adaptation or special uses of UDP protocol
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
    • G06F3/0656—Data buffering arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671—In-line storage system
    • G06F3/0683—Plurality of storage devices
    • G06F3/0689—Disk arrays, e.g. RAID, JBOD
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention discloses a high-speed optical fiber data recorder based on an SD card, which comprises an optical fiber interface module, a data packet distribution module, a DDR3 cache module, an SD cache module, a network port instruction analysis module, a UDP/IP protocol module, a GMII interface module and an upper computer, wherein the optical fiber interface module is used for receiving external data, the output end of the optical fiber interface module is in communication connection with the data packet distribution module, the output end of the data packet distribution module is divided into two branches, one branch is directly connected with the input end of the SD cache module, the other branch is connected with the input end of the SD cache module 4 through the DDR3 cache module, the data packet distribution module is in communication connection with the network port instruction analysis module, the SD cache module, the network port instruction analysis module, the UDP/IP protocol module and the GMII interface module are sequentially connected, and the output end of the GMII interface module. The invention can realize high-speed transmission, recording and playback of a large amount of data, and can be widely applied to the fields of mobile communication, aerospace, national defense and the like.

Description

High-speed optical fiber data recorder based on SD card
Technical Field
The invention belongs to a data recording technology, and particularly relates to a high-speed optical fiber data recorder based on an SD card.
Background
With the continuous development of information technology, the performance of equipment in the fields of mobile communication, aerospace, national defense and the like is continuously improved, and the recording and storing levels of real-time digital signals directly influence the performance and reliability of the equipment. The development of transmission technology and storage technology has also promoted the continuous development of data record appearance greatly, makes data record appearance performance perfect day by day.
At present, domestic research on data recorders is greatly advanced, but the defects of poor universality generally exist, and the requirements of high-speed transmission and quick storage are difficult to meet; DDR3 and a solid state disk are mostly adopted for storage, the DDR3 is small in capacity, and a large amount of data are difficult to store; the solid state disk is large in size, inconvenient to carry and difficult to meet the requirement of miniaturization.
Disclosure of Invention
The invention aims to provide a high-speed optical fiber data recorder based on an SD card.
The technical solution for realizing the purpose of the invention is as follows: a high-speed optical fiber data recorder based on an SD card comprises an optical fiber interface module, a data packet distribution module, a DDR3 cache module, an SD cache module, a network port instruction analysis module, a UDP/IP protocol module, a GMII interface module and an upper computer, wherein the optical fiber interface module is used for receiving external data, the output end of the optical fiber interface module is in communication connection with the data packet distribution module, the output end of the data packet distribution module is divided into two branches, one branch is directly connected with the input end of the SD cache module, the other branch is connected with the input end of the SD cache module 4 through the DDR3 cache module, the data packet distribution module is in communication connection with the network port instruction analysis module and is used for gating only one branch according to the upper computer instruction analyzed by the network port instruction analysis module, the SD cache module, the network port instruction analysis module, the UDP/IP protocol module and the GMII interface module are sequentially connected, and the output end of the GMII interface module is in communication connection with an upper computer.
Preferably, the optical fiber interface module comprises four SFP optical fiber interface units and four gigabit transceivers; the 4 output ends of the SFP optical fiber interface unit are correspondingly connected with the input ends of the gigabit transceivers, and the output ends of the gigabit transceivers are connected with the input ends of the data packet distribution module.
Preferably, the DDR3 cache module comprises a DDR3 unit and a DDR3 to SD unit; the input end of the DDR3 unit is connected with the output end of the data packet distribution module, and the output end of the DDR3 unit is connected with the input end of the DDR 3-SD unit.
Preferably, the SD buffer module includes a FIFO unit and an SD card array; the input end of the FIFO unit is provided with two branches, one branch is directly connected with the output end of the data packet distribution module, the other branch is connected with the output end of the DDR 3-SD unit, and the output end of the SD card array is in communication connection with the network port instruction analysis module.
Preferably, the optical fiber interface module, the packet distribution module, the DDR3 cache module, the SD cache module, the network port instruction parsing module, the UDP/IP protocol module, and the GMII interface module are all integrated on the FPGA.
Compared with the prior art, the invention has the following remarkable advantages: the invention adopts optical fiber communication, has large communication capacity, high read-write speed and low loss; the SD card array is used for storage, the SD card array has the advantages of small size, large capacity and good protectiveness, and can realize high-speed transmission, quick storage and playback of a large amount of data.
The present invention is described in further detail below with reference to the attached drawings.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
As shown in fig. 1, a high-speed optical fiber data recorder based on an SD card includes an optical fiber interface module 1, a data packet distribution module 2, a DDR3 cache module 3, an SD cache module 4, an internet access instruction parsing module 5, a UDP/IP protocol module 6, a GMII interface module 7, and an upper computer 8;
the input end of the optical fiber interface module 1 is in communication connection with external equipment, and the output end of the optical fiber interface module is in communication connection with the data packet distribution module 2. The network port instruction analysis module 5 is in communication connection with the data packet distribution module 2. The output end of the data packet distribution module 2 is divided into two paths, one path is directly connected with the input end of the SD cache module 4, the other path is connected with the input end of the DDR3 cache module 3, the output end of the DDR3 cache module 3 is connected with the input end of the SD cache module 4, and only one branch is gated at any moment. The SD cache module 4, the network port instruction analysis module 5, the UDP/IP protocol module 6 and the GMII interface module 7 are sequentially connected, and the output end of the GMII interface module 7 is in communication connection with the upper computer 8.
The working process of the invention is as follows:
the upper computer transmits the data stream containing the instruction to a UDP/IP protocol module through a GMII interface module, the UDP/IP protocol module analyzes the data stream to obtain a corresponding operation instruction, and the operation instruction is transmitted to an internet port instruction analysis module. And the network port instruction analysis module analyzes the operation instruction and then sends a corresponding control signal to the SD cache module and the data packet distribution module. When the network port instruction analysis module receives the write-in type instruction, external data is allowed to enter the high-speed optical fiber recorder through the optical fiber interface module and is transmitted into the data packet distribution module. The data packet distribution module firstly packages the received data into a write-in format corresponding to the SD card protocol, and outputs the write-in format, the card number and the write-in address in the write-in type instruction to the SD card cache module. The data packet distribution module outputs the received data to the SD card cache module, and the SD card cache module has two output routes, and one of the two routes is gated at any time according to the instruction of the network port instruction analysis module. One path of data is directly output to an SD cache module, and the SD card cache module inputs data to SD cards in an SD card array in sequence; the other path of data passes through the DDR3 cache module firstly, and the DDR3 cache module caches a certain amount of data and then outputs the data to the SD cache module. And the network port instruction analysis module sends a corresponding control signal to the SD cache module when receiving the instruction of the reading type, the SD cache module feeds back data to the network port instruction analysis module and packages the data into a corresponding receiving protocol format of the upper computer, and then the data stream is output to the UDP/IP protocol module. And the UDP/IP protocol module packs the data stream according to the UDP/IP protocol and sends the data stream to the upper computer through the GMII network interface module. And when the network port instruction analysis module receives the erasure type instruction, the corresponding control signal is sent to the SD cache module, and the SD cache module controls the SD card array to erase data.
The optical fiber interface module 1 comprises four SFP optical fiber interface units 11 and four high-speed gigabit transceivers 12; the 4 output ends of the SFP optical fiber interface unit 11 are connected with the input end of the high-speed gigabit transceiver 12 in a one-to-one correspondence manner, and the output end of the high-speed gigabit transceiver 12 is connected with the input end of the data packet distribution module 2. The optical fiber interface module 1 adopts a multi-channel SFP optical fiber interface unit 11 and a high-speed gigabit transceiver 12 to realize butt joint with external equipment and high-speed transceiving, the single-channel data rate can reach 6.25Gbps at most, and the four-channel parallel rate can reach 25Gbps at most.
The DDR3 cache working mode can cache a certain amount of data at a higher speed and is suitable for receiving a burst high-speed data stream with a higher average receiving rate. The network port instruction analysis module 5 is in communication connection with the data packet distribution module 2, and controls the data packet distribution module 2 to be communicated with the DDR3 cache module 3 or the SD cache module 4 according to an instruction sent by the upper computer 8, and a working mode is selected.
After receiving the data, the data packet distribution module 2 judges whether the data packets meet the protocol requirements, and stores the data packets meeting the protocol requirements into the SD cache module 4 in a parallel storage mode in sequence by taking every two data packets as a group, and stores a group of data into the next SD card when one SD card is full, and stops receiving the data when all SD cards are full.
The DDR3 cache module 3 comprises a DDR3 unit 31 and a DDR3 to SD unit 32; the input end of the DDR3 unit 31 is connected with the output end of the packet distribution module 2, and the output end of the DDR3 unit 31 is connected with the input end of the DDR 3-SD unit 32. The DDR3 unit 31 receives data from the packet distribution module 2 and stores the data dynamically. When 512 bytes are available, DDR3 SD unit 32 reads the data as 4 bits, transfers it to SD card array 42 for storage, and loops back and forth.
The SD buffer module 4 comprises a FIFO unit 41 and an SD card array 42; the input end of the FIFO unit 41 has two branches, one of which is directly connected to the output end of the packet distribution module 2, and the other of which is connected to the output end of the DDR3 to SD unit 32, and only one of which is gated at any time. The output end of the SD card array 42 is in communication connection with the network port instruction parsing module 5.
The FIFO unit 41 performs clock domain crossing processing, converts input 64-bit and 125MHz signals into 4-bit and 50MHz signals, and stores the signals in the SD card array 42, thereby preventing the metastable state problem.
The SD card array 42 comprises 16 SD cards; the 16 SD cards work in parallel. The maximum capacity is 8192GB, the total reading rate can reach 1.5GBps, and the total writing rate can reach 1.2 GBps.
The SD card array 42, the network port instruction analysis module 5, the UDP/IP protocol module 6, the GMII interface module 7 and the upper computer 8 are all in two-way communication.
And the UDP/IP protocol module 6 packages the data transmitted from the SD cache module 4 into a UDP format and transmits the UDP format to the upper computer 8, and the UDP/IP protocol module is communicated with the upper computer 8.
The optical fiber interface module 1, the data packet distribution module 2, the DDR3 cache module 3, the SD cache module 4, the network port instruction analysis module 5, the UDP/IP protocol module 6 and the GMII interface module 7 are all integrated on the FPGA.
The upper computer 8 sends an instruction to the GMII interface module 7 through the network interface, the GMII interface module 7 transmits the instruction to the network port instruction analysis module 5, and the network port instruction analysis module 5 analyzes the instruction and controls the corresponding module to select a working mode, write in, read and erase data according to the instruction.

Claims (5)

1. A high-speed optical fiber data recorder based on an SD card is characterized by comprising an optical fiber interface module (1), a data packet distribution module (2), a DDR3 cache module (3), an SD cache module (4), a network port instruction analysis module (5), a UDP/IP protocol module (6), a GMII interface module (7) and an upper computer (8), wherein the optical fiber interface module (1) is used for receiving external data, the output end of the optical fiber interface module is in communication connection with the data packet distribution module (2), the output end of the data packet distribution module (2) is divided into two branches, one branch is directly connected with the input end of the SD cache module (4), the other branch is connected with the input end of the SD cache module (4) through the DDR3 cache module (3), the data packet distribution module (2) is in communication connection with the network port instruction analysis module (5) and is used for gating only one branch at any moment according to an upper computer instruction analyzed by the network port instruction analysis module (5), the SD cache module (4), the network port instruction analysis module (5), the UDP/IP protocol module (6) and the GMII interface module 7 are sequentially connected, and the output end of the GMII interface module 7 is in communication connection with the upper computer 8.
2. High-speed optical fiber data recorder based on SD card according to claim 1, wherein said optical fiber interface module (1) comprises four SFP optical fiber interface units (11) and four gigabit transceivers (12); the 4 output ends of the SFP optical fiber interface unit (11) are correspondingly connected with the input ends of the gigabit transceivers (12), and the output ends of the gigabit transceivers (12) are connected with the input ends of the data packet distribution module (2).
3. The SD card based high speed fiber optic data recorder according to claim 1, wherein the DDR3 cache module (3) comprises a DDR3 unit (31) and a DDR3 to SD unit (32); the input end of the DDR3 unit (31) is connected with the output end of the data packet distribution module (2), and the output end of the DDR3 unit is connected with the input end of the DDR 3-SD unit (32).
4. The SD card-based high-speed fiber optic data recorder according to claim 1, characterized in that the SD cache module (4) comprises a FIFO unit (41) and an SD card array (42); the input end of the FIFO unit (41) is provided with two branches, one branch is directly connected with the output end of the data packet distribution module (2), the other branch is connected with the output end of the DDR 3-SD unit (32), and the output end of the SD card array (42) is in communication connection with the network port instruction analysis module (5).
5. The SD card based high-speed optical fiber data recorder according to claim 1, wherein the optical fiber interface module (1), the packet distribution module (2), the DDR3 cache module (3), the SD cache module (4), the network interface command parsing module (5), the UDP/IP protocol module (6), and the GMII interface module (7) are integrated on the FPGA.
CN201911314521.3A 2019-12-19 2019-12-19 High-speed optical fiber data recorder based on SD card Active CN111131217B (en)

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Cited By (1)

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CN114257645A (en) * 2021-11-23 2022-03-29 北京谊安医疗系统股份有限公司 Embedded modular communication system and communication method thereof

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