CN201699746U - Embedded Linux clipping system based darwin streaming server - Google Patents

Abstract

The utility model relates to an embedded Linux system based on a darwin streaming server, which comprises a core control module POWERPC, a high-speed communication module, a data storage module, a low-speed communication module and a power control module, and has the advantages that based on a network processor POWERPC, the utility model can copy and distribute the audio/video steam media in the remote control system transformer substation of an electrical power system, and the POWERPRC processor is widely applied in the router products of the switch in the communication area. Compared with the X86 platform PC system, the Windows operating system and the traditional darwin streaming media server, the utility model has low cost. Under the same property, the cost of the utility model is lower than that of the PC system by 50%, and the power consumption is lower than that of the PC system by more than 80%. The utility model has high stability and high safety, and belongs to the embedded products. Since the clipping Linux core technology is used, the safety of the utility model is greatly improved compared with the Window system.

Description

Streaming media server based on the built-in Linux cutting system

Technical field

The utility model relates to a kind of streaming media server based on the built-in Linux cutting system, transformer station of suitable power system Active Eyes application demand belongs to the network communications technology field.

Background technology

Transformer station's network video monitor and control system (also claiming " remote viewing system ") has tentatively solved the telemonitoring problem after transformer station's " unattended operation ".By setting up streaming media server, realize a plurality of transformer stations online monitoring remote video simultaneously in Surveillance center.Conventional flow media service system based on x86PC framework Windows operating system all is being short of aspect fail safe, stability, the execution efficient power consumption to some extent, in modern electric power system, networking, digitlization and the automation of electric substation's management are the inexorable trends that electric power development requires, and the unattended operation of electric substation, integrated management and safety management are the modern only ways of electrical network.Domestic electric power system is when the unattended operation transformer station of building based on remote measurement, remote signalling, remote control, remote regulating-" four is distant " technology, because scheduling can't be understood on-the-spot ambient conditions, can't solve problems such as on-the-spot fire prevention, antitheft, explosion-proof, prevention against water-logging, a lot of transformer stations that build by " unattended operation " have adopted " few man on duty " mode operation.Along with the develop rapidly of computer technology, multimedia technology and mechanics of communication, the 5th distant-" remote viewing " that increases on the basis of " four is distant " is for realizing that transformer station's " unattended operation " has crucial meaning.Transformer station's security protection and environmental monitoring system are mainly used and are embodied by transformer station's network video monitor and control system (also claiming " remote viewing system "), mainly construct and implement, reach telemonitoring operation power equipment, substation based on the safety and protection system of video monitoring.Transformer station generally provides network interfaces such as E1 (2.048Mbps), 100M Fast Ethernet, when the multipath concurrence Network Video Surveillance is visited, for solving headend equipment concurrent processing bottleneck and network bandwidth bottleneck, need set up streaming media server in Surveillance center, make full use of the Gbps and the bag transfer capability of Surveillance center's switch, reach the concurrent visit effect of a plurality of networking clients.In remote viewing system, the Streaming Media reflecting software that runs at present on the PC realized the reception of stream medium data and duplicated forwarding capability, effectively solved the problem that effective bandwidth deficiency when occurring the focus visit in the supervisory control system and connecting and heterogeneous network connect.Along with the Streaming Media repeater system in actual items application and popularize, the fail safe of Streaming Media repeater system, stability and reliability requirement become increasingly conspicuous, and whether the operation whether it can be reliable and stable will directly have influence on the whole video supervisory control system and can normally move.The Observer Star network flow-medium service software that on PC server, Windows operating system, moves, can satisfy streaming media video monitoring application need on a small scale, its fail safe, stability and reliability go for most of project on a small scale generally.Because the Windows system exists well-known fail safe, stability and integrity problem, present streaming media server implementation can not adapt to extensive monitored item purpose application demand.In addition, the speciality of streaming media server is to have high bandwidth the high-speed stream media transfer of data is provided, relative less to other hardware resource of main frame (as CPU, internal memory and storage etc.) use, adopt high performance generic server to cause resources idle and waste as hardware platform.

Summary of the invention

The utility model proposes streaming media server, can effectively solve directly and obtain the network bandwidth deficiency that runs into, problems such as headend equipment video flowing transmitting capacity deficiency from headend equipment based on the built-in Linux cutting system.Can from front end apparatus figure video server or web camera, obtain live video stream, and it is distributed in the client of any one application video flowing.

Technical solution of the present utility model: its structure is to comprise kernel control module POWERPC, the high-speed communication module, data memory module, the low-speed communication module, energy supply control module, wherein core is controlled the first output/input of mould POWERPC and corresponding the joining of I/O end of high-speed communication module, corresponding the joining of I/O end of the second output/input of kernel control module POWERPC and data memory module, corresponding the joining of I/O end of the 3rd output/input of kernel control module POWERPC and low-speed communication module, the power output end of energy supply control module and the power supply of kernel control module POWERPC are exported into end is corresponding and are joined, the power output end of energy supply control module and the power supply of high-speed communication module are exported into end is corresponding and are joined, the power output end of energy supply control module and the power supply of data memory module are exported into end is corresponding and are joined, and the power output end of energy supply control module connects the power supply of low-speed communication module and exports into end.

At actual environment for use, the present invention has the following advantages: 1) the present invention has used in the communications field widely used network processing unit POWERPC in the product such as switch router first in the forwarding of video flowing is used in the power system transformer substation long distance control system.With respect to the use PC, traditional streaming media server of windows operating system and streaming media service software, the present invention is with low cost, and under the situation of identical performance, cost of the present invention is lower than 50% of PC.The present invention's stability is high, belongs to embedded product, and hardware module all designs in same PCB, the compatible stability problem that does not exist PC often to have.2) the present invention is safe, uses cutting linux Kernel Technology, and fail safe greatly improves than the windows system.3) the present invention has increased network service quality control and management (QoS) function at electric power system video surveillance applications characteristics in the high-speed communication module, is used to handle work as simultaneously concurrent video data very for a long time, guarantees important video data priority treatment.4) the present invention has increased the automatically heavy online system of flow media session fault in the high-speed communication module, current looking closely when collecting device breaks down frequently, the high-speed communication module can be noted this fault point, and takes appropriate measures after recovery, recovers the communication of video capture device therewith.

Description of drawings

Accompanying drawing 1 is based on the structural representation of the streaming media server of built-in Linux cutting system.

Accompanying drawing 2 is kernel control modules and the part schematic diagram that is connected of high-speed communication module:

Accompanying drawing 3 is kernel control modules and the part schematic diagram that is connected of data memory module:

Accompanying drawing 4 is the static data memory cell part schematic diagrams in the data memory module.

Accompanying drawing 5 is the configuration information memory cell part schematic diagrams in the data memory module.

Accompanying drawing 6 high-speed communication module section schematic diagrams.

Accompanying drawing 7 is low-speed communication module section schematic diagrams.

Embodiment

Contrast accompanying drawing 1, its structure is to comprise kernel control module POWERPC, the high-speed communication module, data memory module, the low-speed communication module, energy supply control module, corresponding joining of I/O end of the first output/input of kernel control module POWERPC and high-speed communication module wherein, the high-speed communication module is connected on the Enhanced Tree-Speed Ethernet Controller (strengthening three speed ethernet controllers) of kernel control module by Gigabit Media Independent Interface (gigabit Media Independent Interface), the high-speed communication module is converted to the 4bit parallel data with the gigabit Ethernet data and sends to kernel control module, the 4bit parallel data of simultaneously kernel control module being sent is converted to the gigabit Ethernet data and is sent in the network, corresponding the joining of I/O end of the second output/input of kernel control module POWERPC and data memory module, each subelement of data memory module is connected to kernel control module by the interface of correspondence respectively, the video data storing sub-units is connected to the SATA control unit interface of kernel control module by the SATA data wire, realize the storage of Large Volume Data by the SATA hard disk, the dynamic data storage subelement is connected to the DDR Memory Controller Hub of kernel control module, realize dynamic data storage, the static data storing sub-units is connected to the Enhanced Local bus controller (enhancement mode local bus controller) of kernel control module by Local bus (local bus), realize the storage of control system data, the configuration information storing sub-units is connected to the I2c controller of kernel control module by the I2c bus, power on configuration information storage of realization, corresponding the joining of I/O end of the 3rd output/input of kernel control module POWERPC and low-speed communication module, the low-speed communication module is connected with kernel control module dual universal asynchronousreceiver/transmitters (UART) by 3 line TTY level, realizes that system information monitors.The power output end of energy supply control module and the power supply of kernel control module POWERPC are exported into end is corresponding and are joined, energy supply control module provides 3.3v to kernel control module, 1.8v, 1.0v etc. operating voltage, the power output end of energy supply control module and the power supply of high-speed communication module are exported into end is corresponding and are joined, energy supply control module provides 3.3v to the high-speed communication module, 1.5v operating voltage, the power output end of energy supply control module and the power supply of data memory module are exported into end is corresponding and are joined, energy supply control module provides 3.3v to data memory module, 1.8v operating voltage, the power output end of energy supply control module and the power supply of low-speed communication module are exported into end is corresponding and are joined, and energy supply control module provides 3.3v operating voltage to the low-speed communication module.

The master control module that has adopted POWERPC is the core of whole system, and for satisfying high speed, large-capacity video storage and the communication of low speed control data are satisfied in the real-time processing of multi-path video data stream simultaneously.The master control module of requirement system has higher operating frequency, a plurality of Fast Ethernet interfaces and high speed serialization hard disk controller.The stream media server system kernel control module has used the PowerQUICC II series high-performance communication processor powerpc 8379 of Freescale company, operating frequency is up to 666Mhz, have two G bit ethernet communication controllers simultaneously, and 4 SATA series hard-disk controllers.

Contrast accompanying drawing 2, kernel control module is by its " heart " POWERPC and other peripheral clocks, and auxiliary circuits such as power filter are formed, and its most important interface section is exactly the interface with the high-speed communication module.Wherein G1_RXD0～G1RXD3 is the 4bit parallel data received signal line that kernel control module arrives high-speed communication module kilomega network controller 1, G1_TXD0～G1TXD3 is the 4bit parallel data transmission holding wire that kernel control module arrives high-speed communication module kilomega network controller 1, in like manner wherein G2_RXD0～G2RXD3 is the 4bit parallel data received signal line that kernel control module arrives high-speed communication module kilomega network controller 2, and G2_TXD0～G2TXD3 is the 4bit parallel data transmission holding wire that kernel control module arrives high-speed communication module kilomega network controller 2.MDC and MDIO are the clock line and the data wire of GMII bus, and kernel control module is by the transmitting-receiving of the Gigabit Ethernet controller of their control high-speed communication modules.COL, CRS, the RX_ER equisignal line then is used for finishing conflict and surveys, and carrier sense receives tasks such as error detector.

Contrast accompanying drawing 3, kernel control module has 4 SATA controllers (accompanying drawing 3), and S_RXP0 among the figure, S_RXN0, S_TXP0, S_TXN0 are respectively two pairs of differential signal lines of the transmitting-receiving of SATA controller 0.SATA1～3 controllers in like manner.Kernel control module is finished the storage of the video data of SATA hard disk and the work of reading by these two pairs of data wires.

Contrast accompanying drawing 4, data memory module has comprised four parts: video data memory cell, dynamic data storage unit, static data memory cell and configuration information memory cell.To satisfy the storage needs in the whole stream media server system.The video data memory cell has used 7200 of Seagate Technology to change big capacity SATA interface hard disk, is used for a large amount of video data of real-time storage.The dynamic data storage unit has made the k5ps516 DDR2 particle of 4 Hynix companies.Be used for operating system and use, and use during processing video data.The static data memory cell has been used the K9F5608U0D of 1 Samsung.This chip is 32M x8bit nand flash, is used for the operating system and the control program of stored stream media server system.

Contrast accompanying drawing 5, the configuration information memory cell has been used the M24356 of 1 ST company.This chip is the EEPROM of the I2c bus of a 256kbit, the configuration information when being used for storage system and powering on.

The contrast accompanying drawing 6, the high-speed communication module be in the stream media server system except kernel control module most important parts.Be used for collecting and transmitting of big capacity real time video data stream.Comprise a pair of G bit Ethernet Transmit-Receive Unit in the high-speed communication module, used the RTL8211 of Realtek company.

Contrast accompanying drawing 7, the low-speed communication module is used for the supervision of system information of stream media server system running and the communication port that control information is provided.The low-speed communication module has been used the 3232RS232 chip of SIPEX.

Energy supply control module provides kernel control module, all power supplys that memory module and high speed/low-speed communication module are required.Mainly comprised the AC/DC unit that 220v exchanges the 5V direct current, and 5V is to 3.3V, DC/DC unit such as 1.8V.

Claims (1)

1. based on the streaming media server of built-in Linux cutting system, it is characterized in that comprising kernel control module POWERPC, the high-speed communication module, data memory module, the low-speed communication module, energy supply control module, corresponding joining of I/O end of the first output/input of kernel control module POWERPC and high-speed communication module wherein, corresponding the joining of I/O end of the second output/input of kernel control module POWERPC and data memory module, corresponding the joining of I/O end of the 3rd output/input of kernel control module POWERPC and low-speed communication module, the power output end of energy supply control module and the power supply of kernel control module POWERPC are exported into end is corresponding and are joined, the power output end of energy supply control module and the power supply of high-speed communication module are exported into end is corresponding and are joined, the power output end of energy supply control module and the power supply of data memory module are exported into end is corresponding and are joined, and the power output end of energy supply control module and the power supply of low-speed communication module are exported into end is corresponding and joined.

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