CN101123540A - A monitoring method and system based on heterogeneous network - Google Patents
A monitoring method and system based on heterogeneous network Download PDFInfo
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- CN101123540A CN101123540A CNA2007100298082A CN200710029808A CN101123540A CN 101123540 A CN101123540 A CN 101123540A CN A2007100298082 A CNA2007100298082 A CN A2007100298082A CN 200710029808 A CN200710029808 A CN 200710029808A CN 101123540 A CN101123540 A CN 101123540A
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Abstract
The present invention discloses a monitoring method based on a heterogeneous network. The public network segment of the heterogeneous network contains an independent public network server with a fixed IP address, a router with the function of network port mapping, which can send UDP data packages back and forth among client ends, a front-end server and the public network server, and the monitoring method applying callback technology and transcoding technology to realize direct transmission of monitoring data in the heterogeneous network. Meanwhile, the present invention also discloses a monitoring system based on the heterogeneous network, the public network server is connected with the front-end server system and the client-end systems via an IP network, and the front-end server system and the client-end systems are connected with one another via the UDP network protocol. The front-end server in which an embedded media processor and an embedded realtime multitask operating system are built is used to process the received front-end system data that is then sent to client ends, and therefore the system is enabled to support spot management and automatic alarming and support multiple platforms, network protocols, devices and access mothods and multi-point simultaneous access.
Description
Technical field
The present invention relates to network and safety monitoring technical field, be specifically related to be used for safety monitoring, can pass through the network segment, under heterogeneous network environment, carry out data communication and field management, based on a kind of method for supervising and the system of isomerized networks with network port mapping function router.
Background technology
Internet has now become the important information flow channel of society.Along with the developing rapidly and popularizing of domestic and international Internet technology, for the internet, applications of safety monitoring with build City Integrated Emergency Response System stable basic platform is provided.The security product that with the Streaming Media is core technology is the main flow development trend of safety monitoring series products.At present, offices at different levels throughout the country and society have built up a large amount of audio/video monitor and control systems, and the audio/video monitor and control system of building and will building is also numerous.Chinese patent application 200410016852.6 discloses a kind of network video monitor and control system based on the IP bearer network, in these supervisory control systems, what tension management layer and centralized monitor layer generally adopted all is Ethernet and PC, and all is employing fieldbus and scm observe and control equipment at the monitoring scene.Bilevel communication adopts Industrial Control Computer to add the ether network interface card usually, and the interface card and the LPTx ports EPP interface card of adding on the PC slot are realized.This connected mode cost height, the construction cycle is long.
Along with embedded system must develop, it can be connected to above the Internet, and can make things convenient for, cheap information be sent to almost in the world any old place.Embedded device and combining of Internet are being represented the real future of embedded system and network technology.Along with the application of IPv6, equipment all may obtain a globally unique IP address, and linking to each other with the Internet by the IP address becomes a network equipment.Some also occur at present and adopted the safety monitoring equipment of embedded system technology, disclose a kind of mine intrinsic safety type network front end server that is equipped with embedded unit as Chinese patent 200320123470.4, what but it adopted is that the comparatively complicated multimedia microprocessor of complete equipment Circuits System is the kernel system, and does not support concurrent visit.
Heterogeneous network generally is meant and comprises two kinds of different segments at least and interconnective network, as interconnective two sections or multistage independently local area network (LAN) LAN, wide area network WAN, Intranet INTRANET, internet INTERNET etc. separately.Under existing network environment condition, network exists usually by a large amount of different heterogeneous network unit (network equipment of the various criterion of for example different manufacturers manufacturing) formation, and exist more interconnective different segment, as local area network (LAN) LAN, wide area network WAN, Intranet INTRANET, internet INTERNET etc., the topological structure that is adopted between each network segment, also often there is bigger difference in host-host protocols etc., each network management and the operating system that terminal platform adopted also are not quite similar, be transfer of data and communication each other, caused very big obstacle; Also there are fixedly many differences such as IP dial mode, PPP over Ethernet in the mode that various users insert; In brief, on the present internet, owing to exist phenomenons such as a large amount of network configuration isomeries, network equipment isomery, network operation platform isomery and access way isomery, the problem that has caused present various places network monitoring systems at different levels can not interconnect has mutually restricted its extensive access and application.
In addition, in order to guarantee the fail safe of network, most enterprises are between its local area network (LAN) LAN, wide area network WAN or Intranet INTRANET and internet INTERNET, be provided with fire compartment wall FIREWALL, fire compartment wall FIREWALL generally comprises packet filtering router and the application gateway with network port mapping function, and refusal does not flow into or outflow through the data of checking or legal authorization.This packet filtering router with network port mapping function, be overlapping setting under many circumstances, promptly in a network path, often being provided with the multiple tracks Filtering Router, also is each network segment data passes and communication each other, causes obstacle, be the data on the internet, can not directly arrive local area network (LAN) or Intranet, vice versa, even can not carry out free transfer of data and communication between middle two sections local area network (LAN)s that are provided with this router.Be to compose a piece of writing conveniently, this paper is related possesses complete opening and is provided with the network segment of subnet in a big way, as internet or metropolitan area network etc., and the common name public network; This paper related only with respect to the specific interior zone network segment open, that do not have subnet, local area network (LAN) or the Intranet open each other as terminal in the fire compartment wall are commonly referred to as Intranet; Between described public network and the Intranet, can be provided with one or multi-channel fire compartment wall.
Also there is following shortcoming in the technical scheme of existing security-protecting and monitoring method and system:
1, the prior art scheme all is to be to work in the single network segment under the single structure network platform, and between each heterogeneous network, data can not be transmitted mutually and be compatible, thereby can't satisfy that supervisory control system data between different segment interconnect, the demand of resource-sharing;
2, when the supervisory control system in the zone is made up of the watch-dog of different manufacturers, because each producer has adopted different self-defined Signal Compression and host-host protocol, and that have nothing in common with each other, matching used client-side management software, must be linked into supervisory control system administrative center respectively in the different location by the corresponding communication protocol converter, could realize unified centralized management each monitor terminal in this zone;
3, because each end product adopts the interconnected and custom protocol supervisory control system of PSTN time slot, and do not support the concurrent visit of multiple spot, make centralized monitoring system have to be designed to multilevel hierarchy, progression is secondary or three grades even more networking structure, manageability and reliability are descended more thereupon, and do not possess the field management function;
4, because the workflow of each supervisory control system running and management thereof at present is to adopt diverse ways and standard separately, all establish one's own system, and generally can't be general during interdepartmental system, exist problems such as administrative staff's workload is big, system maintenance complexity.
Summary of the invention
One of purpose of the present invention is, at the existing above-mentioned deficiency of existing monitoring technique, provide employing on the public network section of heterogeneous network, be provided with one and be independent of client and front-end server and have the fixedly public network server of IP, and between client, front-end server and described public network server, come and go send the UDP message bag with pass through router with network port mapping function, can compatible various protocols in heterogeneous network, directly transmit a kind of method for supervising of data based on heterogeneous network;
The present invention also aims to, a kind of employing embedded media processor core and embedded real-time operating system are provided, based on heterogeneous network, support kinds of platform, procotol and access way, and support the supervisory control system of the concurrent visit of multiple spot.
Technical scheme provided by the present invention is:
1, a kind of method for supervising based on heterogeneous network, it comprises the steps:
1) on the public network section of heterogeneous network, at least one is set is independent of client and front-end server and has the fixedly public network server of IP; This server can be dynamic IP server, dns server etc.;
2) set the condition of work or the parameter of each front end system be connected in the heterogeneous network, front-end server, client respectively; As carrying out the setting of the condition of work or the parameter of front-end server, client by CGI manager etc.
3) before client connected front-end server in connection or by public network, the local port localPort by oneself preparing to be used to monitor sent the UDP message bag to public network server;
4) after described public network server receives this UDP message bag, can obtain the public network port fireWarePort and the public network IP of UDP message bag, and the public network port and the former road of IP of packet are returned;
5) feedback data packet of public network server is forwarded to client after arriving the router with network port mapping function, thereby to know localPort corresponding port on router be public network port fireWarePort to client; When client carrying out UDP when connecting, this correspondence port of being known is notified to public network server in advance;
6) front end system is with the supervisory signal collection of its guarded region and export front-end server to;
7) front-end server is converted to stream medium data with this supervisory signal, and is sent to the fireWarePort port of router;
8) send to the stream medium data of router fireWarePort port, then be forwarded to the localPort port of client, arrive client; Set up data communication link between front-end server and the client thus, and by these link bidirectional transmission data;
When 9) data of setting up when step 8) connect link generation interruption, repeating step 2)～8), rebulid data and connect link;
10) after the step 8) stream medium data arrives client, client promptly according to its previous setting, specifies front-end server to transmit control signal from trend when finding its preset working condition of this data fit; Simultaneously, client also according to preestablishing or interactive instruction, is write down or is stored received stream medium data automatically;
11) control signal that sends in the step 10), the data of setting up along described step 8) connect link, export front-end server to; Front-end server is carried out this control signal, or exports the front end system execution after the conversion to, realizes the automatic control to the scene.
Aforesaid method for supervising, described step 7) can also comprise the steps:
A) when the front end server is received audio signal in the supervisory signal that front end system transmits, decode earlier, encode again, be converted into stream medium data;
B) receive the supervisory signal that front end system transmits when the front end server, when finding to meet its preset working condition,, send message from trend given client end promptly according to its previous setting;
Described client promptly according to preestablishing or interactive instruction, is sent control signal corresponding to front-end server automatically after receiving this message; Simultaneously, client also according to preestablishing or interactive instruction, is write down or is stored received stream medium data automatically; Carry out described step 11) then.
Aforesaid method for supervising, described step 1), can also comprise: on the public network section of described heterogeneous network, be provided with at least one be parallel to public network server, itself also have the fixedly dynamic IP server DIPS of IP, be used for obtaining the dynamic IP of described front-end server; In described heterogeneous network, an administrative center platform SMC that can connect client and front-end server can be set at least also;
Aforesaid method for supervising, described step 2), can also comprise the steps:
A) described one or more client is set to one group;
B) described one or more front end system is set to one group, and one or more groups front end system is inserted a front-end server simultaneously, receives and handle its data simultaneously by this front end system;
C) described one or more front-end server is set to one group, and specifies the message of its transmission, is received and is handled by same or same group of client.
Described step 2) also comprises the steps:
A) described one or more administrative center platform SMC is set to one group;
B) some groups of administrative center platform SMC are carried out cascade;
C) with described one or more groups front-end server, one or more groups client respectively by an administrative center of network insertion platform SMC;
D) by wherein one or more administrative center platform SMC, front-end server or client that each administrative center platform SMC is inserted manage.
Described step 7) and 11) message described in sends, and is to adopt udp protocol to transmit, and has the data field of a sequence number at each UDP message header; When front end server during to message of the every transmission of client, the value of this data field is convenient to the recipient and is judged repetition message with it from adding 1.
Aforesaid step 2) setting described in also comprises the setting of carrying out in real time by man-machine interaction mode; Transmitting control signal in the described step 10) also comprises the transmission of carrying out in real time by man-machine interaction mode; As passing through CGI manager, the transmission of carrying out in real time.
A kind of supervisory control system based on heterogeneous network comprises the interconnective heterogeneous network of plurality of sections, some front end systems, front-end server system and FTP client FTP; Described heterogeneous network comprises at least one section public network and one section Intranet, is provided with the router that at least one place has network port mapping function between two network segments; Front-end server and client are connected on the different network segments; Described front end system is connected with front-end server, described front-end server is connected with Intranet by public network with client, it is characterized in that, on the public network section of heterogeneous network, also be provided with at least one and be independent of client and front-end server and have the fixedly public network server of IP; Described public network server links to each other with described FTP client FTP with described front-end server system by IP network, and described front-end server system is connected by the UDP procotol with described FTP client FTP.
Aforesaid supervisory control system, described front end system is by the input subsystem that is used for all devices that obtains and export to front-end server of field datas such as audio frequency and video, temperature, humidity, constituent of air in the guarded region is formed, and is used for the output subsystem that light, sound, electricity, all devices of machine to guarded region field control or management form and forms jointly;
Described front-end server system, comprise somely can work independently, the front-end server of built-in embedded media processor EMP and embedded real-time multi-task operating system software RTOS, this server is used for receiving and handling the signal of front end input subsystem, encoded, processing such as storage and send to client, be used for receiving and handling the control signal that client is sent simultaneously, being carried out or export to front end system carries out, support kinds of platform, procotol and access way, and support the device of the concurrent visit of multiple spot; Described front-end server can also be provided with the general input/output interface GPIO that is used for receiving equipment such as various field datas, connection transducer; Also can built-in automatic alarm module; A whole set of circuit arrangement is in the housing of a sealing.
Described front-end server can be positioned at the optional position of heterogeneous network, can be in Intranet, also can be in public network.The public network server of described fixedly IP can be a kind of in the servers such as dynamic IP server DIPS, ftp server, smtp server, dns server.
Described FTP client FTP comprises the plurality of client end that can work independently; Described client is to be used to connect front-end server and to browse equipment and software with front monitoring front-end server system data, comprises watchdog subsystem and control subsystem two parts; When client terminal to discover meets the data of its default situation, automatically front-end server is sent control signal corresponding; Simultaneously, client also according to preestablishing or interactive instruction, is write down or is stored received stream medium data automatically.
Aforesaid supervisory control system, on described heterogeneous network, also be provided be connected between front-end server and the client, the parallel or serial with described public network server, be used for to front-end server and client manage, and several administrative centers platform SMC of managing each other; Can also be provided with at least one be parallel to public network server, itself also have the fixedly dynamic IP server DIPS of IP, be used for obtaining the dynamic IP of described front-end server; Described each administrative center platform SMC can be connected with several front-end servers and client respectively, and can carry out grouping management to it; Between described each administrative center platform SMC, can carry out cascade, to realize the management of multilayer level by network.Administrative center platform SMC can adopt PC or server.Administrative center platform SMC also can be the client that management system platform software is equipped with in inside, this moment can with the public network server serial.
The invention has the advantages that: method and system provided by the present invention, utilization is arranged on the public network, has the fixedly public network server of IP, realize that local area network (LAN) client udp port is passing through of fire compartment wall to the router with network port mapping function, can make the local area network (LAN) client can be directly with public network on front-end server carry out UDP and be connected, with the access way of front-end server client from before the PPOE dialing, fixedly access way such as public network IP online extends to local area network (LAN) and inserts, make the local area network (LAN) client can break through the restriction of different network environments, directly receive the UDP message of public network front-end server, thereby make supervisory control system adapt to various heterogeneous network environments, compatible various protocols is as TCP/IP, DUP, RTSP etc.; Support the multiple network access way, as fixing IP, DHCP, PPPOE access; The support dhcp address distributes, and is fit to extensive the access; Can the inter-network section use, cross over local area network (LAN) LAN, wide area network WAN or Intranet INTRANET and internet INTERNET simultaneously, expanded the scope of application of network monitoring greatly, and can be, thereby long-range multilayer level, big zone, real-time unattended Intellectualized monitoring be realized in the control point to front-end server and the self-defined grouping of administrative center's platform.System provided by the present invention, reliable operation, simple in structure, installation, use, easy to maintenance, and can be set to single-stage or multiple management pattern as required, and possess the field management function, be convenient to the network monitoring system of building big district management, inserting on a large scale.
Description of drawings
Fig. 1 is the physical structure schematic diagram of the embodiment of the invention 1 based on the supervisory control system of heterogeneous network;
Fig. 2 is the logical architecture schematic diagram of the embodiment of the invention 1 based on the supervisory control system of heterogeneous network;
Fig. 3 is the logical architecture schematic diagram of front end system and front-end server among Fig. 2;
Fig. 4 is the physical structure schematic diagram of front-end server among Fig. 1;
Fig. 5 is the workflow schematic diagram of front-end server among Fig. 1;
Fig. 6 is real time operating system and the dispatching management structural representation of inventive embodiments 1 based on the supervisory control system of heterogeneous network;
Fig. 7 is the circuit theory diagrams that video input module is connected with medium process module among Fig. 4.
Fig. 8 is the circuit theory diagrams that Fig. 4 sound intermediate frequency input module is connected with medium process module.
Fig. 9 and Figure 10 are the circuit theory diagrams that Fig. 4 sound intermediate frequency output module is connected with medium process module.
Figure 11 is the physical structure schematic diagram of the embodiment of the invention 2 based on the supervisory control system of heterogeneous network;
Figure 12 is the logical architecture schematic diagram of the embodiment of the invention 2 based on the supervisory control system of heterogeneous network;
Figure 13 is the logical architecture schematic diagram of the embodiment of the invention 2 based on the grouping multilayer level connection of the supervisory control system of heterogeneous network.
Figure 14 is the physical structure schematic diagram of the embodiment of the invention 3 based on the supervisory control system of heterogeneous network.
Below in conjunction with accompanying drawing, the present invention is further described.
Embodiment
Embodiment 1, is provided for a kind of supervisory control system and the method based on isomery internet and local area network (LAN) of safety monitoring.
As Fig. 1-shown in Figure 10, a kind of supervisory control system based on heterogeneous network comprises the interconnective heterogeneous network of plurality of sections, some front end systems, front-end server system and FTP client FTP; Described heterogeneous network comprises at least one section public network and one section Intranet, is provided with the router that at least one place has network port mapping function between two network segments; Front-end server and client are connected on the different network segments; Described front end system is connected with front-end server, described front-end server is connected with Intranet by public network with client, it is characterized in that, on the public network section of heterogeneous network, also be provided with at least one and be independent of client and front-end server and have the fixedly public network server of IP; Described public network server links to each other with described FTP client FTP with described front-end server system by IP network, and described front-end server system is connected by the UDP procotol with described FTP client FTP.
Aforesaid supervisory control system, described front end system is by the input subsystem that is used for all devices that obtains and export to front-end server of field datas such as audio frequency and video, temperature, humidity, constituent of air in the guarded region is formed, and is used for the output subsystem that light, sound, electricity, all devices of machine to guarded region field control or management form and forms jointly; Comprise The Cloud Terrace and microphone in the present embodiment; The described subsystem of importing out can comprise: major light, loudspeaker, various transducer, gate control system etc. are loudspeaker in the present embodiment.
Described front-end server system, comprise somely can work independently, the front-end server of built-in embedded media processor EMP and embedded real-time multi-task operating system software RTOS, this server is used for receiving and handling the signal of front end input subsystem, encoded, processing such as storage and send to client, be used for receiving and handling the control signal that client is sent simultaneously, being carried out or export to front end system carries out, support kinds of platform, procotol and access way, and support the device of the concurrent visit of multiple spot; Described front-end server can also be provided with the general input/output interface GPIO that is used for receiving equipment such as various field datas, connection transducer; Also can built-in automatic alarm module; A whole set of circuit arrangement is in the housing of a sealing.
Described front-end server can be positioned at the optional position of heterogeneous network, and present embodiment is in public network.The public network server of described fixedly IP can be a kind of in the servers such as dynamic IP server DIPS, ftp server, smtp server, dns server, and what present embodiment adopted is dns server.
Described FTP client FTP comprises the plurality of client end that can work independently; Described client is to be used to connect front-end server and to browse equipment and software with front monitoring front-end server system data, comprises watchdog subsystem and control subsystem two parts; When client terminal to discover meets the data of its default situation, automatically front-end server is sent control signal corresponding; Simultaneously, client also according to preestablishing or interactive instruction, is write down or is stored received stream medium data automatically.
The hardware aspect of front-end server, be made up of embedded media processor EMP module, universal input/output interface GPIO module, network control and interface module, RS-485 and RS-232 interface module, memory module, video input module, audio frequency input and audio frequency output module, other module is connected on the embedded media processor EMP module; In the present embodiment, front-end server is to be the system core with PNX1500 type embedded media processor EMP module, is that the video input module of decoding chip is connected with the PNX1500 nucleus module and mutual with SAA7118; Analog video input signal process interface is connected to the input of SAA7118 video transformation treatment circuit, and the output of video transformation treatment circuit is connected to the video signal input terminal mouth of Media Processor PNX1500; With PCM1802 is the audio frequency input module of decoding chip, and the analogue audio frequency input signal is connected with the audio frequency input circuit through interface, and the output of audio frequency input circuit is connected to the input port of the audio signal processing circuit of Media Processor; With PCM1744 is the audio frequency output module of output process chip, and audio output signal is connected to the input of audio output circuit from the audio signal processing circuit output of Media Processor, arrives audio output interface through audio output circuit; The built-in too net controller of Media Processor PNX1500 is connected with external ethernet physics control circuit and network interface, and network interface is connected with standard ethernet; Be solidified with the flash memory circuit module of embedded real-time multi-task operating system software RTOS, and external dynamic access storage RAM module, be connected also mutual respectively with the control circuit input/output terminal of Media Processor; A whole set of circuit arrangement is in the metal shell of a sealing.
Particularly, model is the video frequency processing chip U8 of SAA7118, its 4 tunnel VT, and IPO0～7 and HPO0～7 are passed through its peripheral circuit respectively, insert AC, AD, AE, the AF video signal input terminal of PNX1500 Media Processor U1 accordingly; Model is the audio frequency input process chip U13 of PCM1802, its 11 pin inserts the AD20 pin of PNX1500 Media Processor U1, its 12 pin inserts the AE23 pin of PNX1500 Media Processor U1, gives its peripheral output circuit after the Audio Signal Processing of access from PNX1500 Media Processor U1; Model is the audio frequency output process chip U23 of PCM1744, and its 1 pin inserts the AE20 pin of PNX1500 Media Processor U1, and its 2 pin inserts the AF19 pin of PNX1500 Media Processor U1, will insert from the audio signal of PNX1500 Media Processor U; 6,9 pin connect its peripheral circuit and export.
Aforesaid front-end server also is provided with the general digital input/output interface GPIO circuit, RS232 circuit and RS485 circuit and the external interface thereof that are connected respectively with the input/output port of described Media Processor.By general digital input/output interface GPIO, can connect external equipments such as Digital Video, transducer easily; By RS232 circuit and RS485 circuit and external interface thereof, can control The Cloud Terrace, but also transparent channel input supports warning device to connect.
Described general digital input/output interface GPIO circuit comprises switching value output input DIDO interface, imports comprising being used for connecting external sensor two-way DI, and Transistor-Transistor Logic level or specified level, high level is effective; And the effective two-way DO output of high level.
Described flash memory circuit is to adopt 16M byte Nor flash, also can adopt the described external dynamic access storage of nandflash RAM circuit, is to adopt 64M byteSDRAM.Described PNX1500 type embedded media processor also is built-in with house dog WATCHDOG circuit, prevents that unit exception from crashing.
Described embedded real-time multi-task operating system software RTOS, be to be solidificated in the flash memory module, include server S ERVER manager, CGI CGI manager, hardware manager and MPEG4 codec, and in the real-time streaming media server RTSP server, described server S ERVER manager, include SMTP, DNS, ftp client manager, embedded web page WEB SERVER manager, and PPPOE dialing controller.Its workflow is successively: front-end server powers up, file system initialization, network system, video module, audio-frequency module initialization that the PNX1500 core is built-in, the RTSP server initialization that the RTOS of operating system software is built-in, the video encoder initialization, predefined mobile alarm module initialization, universal input/output interface GPIO module initialization, switching value input/output module DIDO module initialization, watchdog circuit starts; This moment, equipment preparation was ready, enter the work major cycle: major cycle begins, RTSP server process, WEB server process, security personnel's module DIPS handles, carry out the audio frequency output encoder, audio frequency input decoding, video coding, the mobile alarm resume module, switching value input and output DIDO resume module, major cycle finishes, and turns back to major cycle and begins.In this flow process, client can be carried out concurrent access by the WEB server.
The scheduling of real time operating system and managerial structure, its basic process is: the character generator of hardware manager and real-time clock generator are respectively the MPEG4 encoder character and real-time clock signal are provided, the MPEG4 encoder is encoded to the audio-video signal of input, and is converted to the real time flow medium data flow by real-time streaming media server RTSP server; The CGI manager is by CGI command interpretation unit, support embedded web page or client terminal web page, via the WEB server, the audio, video data signal of visit MPEG4 coder processes, simultaneously, the CGI manager provides corresponding connection and visit to support by its built-in SMTP, DNS, ftp client manager, and support the PPPOE dialing access, to realize leap to the heterogeneous networks operating platform.
Comprehensive above-mentioned each figure, the present invention adopts embedded real-time multi-task operating system RTOS matching embedded type processor, makes total system dispatching efficiency height; Because of software code is solidificated among the flash memory FLASH, system is more reliable and more stable; Video and audio signal adopt MPEG4 hardware-compressed technology, the compression ratio height, and handle very flexible; Support the RS-485 interface, can control The Cloud Terrace, but also transparent channel input supports warning device to connect; Support local the warning and network alarming interlock configuration and management; Built-in watchdog circuit, it is moving to possess abnormal restarting, stops to crash; Can support multiple resolution, from FULLD1 (704*576), CIF (352 * 288) to QCIF (176*14); Detection is moved in the support area; In the present embodiment, concrete is provided with: video port is the input of 4 road PAL (or NTSC) composite video; Audio port is: the input of 1 road microphone signal, the output of 1 road loudspeaker signal; The network port is: 10BaseT/100BaseTX Ethernet RJ-45 interface.The input of reporting to the police can be set at: moving object detection and external sensor signal enabling in the appointed area; Be provided with the ethernet port of a 10M/100M compatibility, support Ethernet to insert; Also be provided with a RS-485 mouth, The Cloud Terrace, the first-class transparent transmission of carrying out of varifocal mirror are controlled; A RS-232 mouth can receive the data of warning device.Also be provided with the general input/output interface GPIO that is used for receiving equipment such as various field datas, connection transducer; In the present embodiment, the concrete two-way DI that is provided with imports, and connects external sensor, Transistor-Transistor Logic level or specified level, and high level is effective; Two-way DO output, high level is (5V) effectively.
ICP/IP protocol is supported in the software aspect that front-end server is built-in, can parameter, displaying live view video and audio signal be set by application software or browser; But the rotation of Local or Remote control The Cloud Terrace and the relevant parameter of control camera are as aperture size, focal length distance etc.; Can upgrade by network remote, realize remote maintenance; Built-in WEB supporting platform possesses the WEBSERVER function, can pass through browser access, supports several operation systems, supports the concurrent visit of multiple spot; Adopt the video flowing host-host protocol, changeable transmission supports that 10 users visit simultaneously.Concrete, in the present embodiment, adopted the low bandwidth transmission technology: audio codec is for G.723, and shared bandwidth resources only are 6.4kBits/S.Video adopts the MPEG4 encoding and decoding, and every road bandwidth can be regulated at 16k-2M Bits/S; Adopted transcoding technology: with the audio signal of front end system input, decode earlier, then with the G711 compression, last processing is again advanced in the video flowing video recording that the encoding and decoding speech standard is G723, carries out the AVI video recording; Support double-directional speech, support the Token mechanism of client with the server dialogue; Based on the RTSP of stream media protocol, can realize realizing intercommunication with typical normal business client such as QuickTime; Support the multiple network access way: as fixing IP, DHCP, PPPOE etc. are fit to the extensive application that inserts; Bandwidth, frame per second Adjustable real-time, the user can regulate bandwidth and frame per second according to the packet loss and the service quality of client calculating; The mutual intelligent decision the other side's of server and client side online situation is supported heavily connection of broken string, supports the 5A service to greatest extent; Support firmware upgrade and factory reset, can on the basis of not changing hardware, carry out system upgrade and system maintenance, reduce operating cost; Support several operation systems and host-host protocol, can satisfy the monitoring demand under the complex network environment; Support alarm linkage, as the message mechanism of warning snapshot, server etc.
A kind of method for supervising based on heterogeneous network, i.e. the operation principle of above-mentioned supervisory control system, it comprises the steps:
1) on the public network section of heterogeneous network, is provided with one and is independent of client and front-end server and has the fixedly public network server of IP; This server can be dynamic IP server, dns server etc.;
2) set the condition of work or the parameter of each front end system be connected in the heterogeneous network, front-end server, client respectively; As carrying out the setting of the condition of work or the parameter of front-end server, client by CGI manager etc.
3) before client connected front-end server in connection or by public network, the local port localPort by oneself preparing to be used to monitor sent the UDP message bag to public network server;
4) after described public network server receives this UDP message bag, can obtain the public network port fireWarePort and the public network IP of UDP message bag, and the public network port and the former road of IP of packet are returned;
5) feedback data packet of public network server is forwarded to client after arriving the router with network port mapping function, thereby to know localPort corresponding port on router be public network port fireWarePort to client; When client carrying out UDP when connecting, this correspondence port of being known is notified to public network server in advance;
6) front end system is with the supervisory signal collection of its guarded region and export front-end server to;
7) front-end server is converted to stream medium data with this supervisory signal, and is sent to the fireWarePort port of router;
8) send to the stream medium data of router fireWarePort port, then be forwarded to the localPort port of client, arrive client; Set up data communication link between front-end server and the client thus, and by these link bidirectional transmission data;
When 9) data of setting up when step 8) connect link generation interruption, repeating step 2)～8), rebulid data and connect link;
10) after the step 8) stream medium data arrives client, client promptly according to its previous setting, specifies front-end server to transmit control signal from trend when finding its preset working condition of this data fit; Simultaneously, client also according to preestablishing or interactive instruction, is write down or is stored received stream medium data automatically;
11) control signal that sends in the step 10), the data of setting up along described step 8) connect link, export front-end server to; Front-end server is carried out this control signal, or exports the front end system execution after the conversion to, realizes the automatic control to the scene.
Described step 7) can also comprise the steps:
A) when the front end server is received audio signal in the supervisory signal that front end system transmits, decode earlier, encode again, be converted into stream medium data;
B) receive the supervisory signal that front end system transmits when the front end server, when finding to meet its preset working condition,, send message from trend given client end promptly according to its previous setting;
Described client promptly according to preestablishing or interactive instruction, is sent control signal corresponding to front-end server automatically after receiving this message; Simultaneously, client also according to preestablishing or interactive instruction, is write down or is stored received stream medium data automatically; Carry out described step 11) then.
Described step 7) and 11) message described in sends, and is to adopt udp protocol to transmit, and has the data field of a sequence number at each UDP message header; When front end server during to message of the every transmission of client, the value of this data field is convenient to the recipient and is judged repetition message with it from adding 1.
Aforesaid step 2) setting described in also comprises the setting of carrying out in real time by man-machine interaction mode; Transmitting control signal in the described step 10) also comprises the transmission of carrying out in real time by man-machine interaction mode; In the present embodiment, be by the CGI manager, the transmission of carrying out in real time.
As Figure 11-shown in Figure 13, a kind of supervisory control system based on heterogeneous network, its basic structure and operation principle are identical with embodiment 1, its difference is, on the public network section of described heterogeneous network, also be provided be connected between front-end server and the client, walk abreast with described public network server, be used for to front-end server and client manage, and several administrative centers platform SMC of managing each other; Described each administrative center platform SMC can be connected with several front-end servers and client respectively, and can carry out grouping management to it; Between described each administrative center platform SMC, can carry out cascade, to realize the management of multilayer level by network.Administrative center's platform forms a two-way data communication link by router between front-end server system and client.In the present embodiment, each administrative center's platform is a PC.On the public network section of described heterogeneous network, also be provided with at least one be parallel to public network server, itself also have the fixedly dynamic IP server DIPS of IP, be used for obtaining the dynamic IP of front-end server.
A kind of method for supervising based on heterogeneous network, its basic step is identical with embodiment 1, its difference is, described step 1), also comprise: on the public network section of described heterogeneous network, be provided with at least one be parallel to public network server, itself also have the fixedly dynamic IP server DIPS of IP, be used for obtaining the dynamic IP of front-end server; In described heterogeneous network, an administrative center platform SMC that can connect client and front-end server can be set at least also;
Described step 2), also comprise the steps:
A) described one or more client is set to one group;
B) described one or more front end system is set to one group, and one or more groups front end system is inserted a front-end server simultaneously, receives and handle its data simultaneously by this front end system;
C) described one or more front-end server is set to one group, and specifies the message of its transmission, is received and is handled by same or same group of client.
Described step 2) can also comprise the steps:
A) described one or more administrative center platform SMC is set to one group;
B) some groups of administrative center platform SMC are carried out cascade;
C) with described one or more groups front-end server, one or more groups client respectively by an administrative center of network insertion platform SMC;
D) by wherein one or more administrative center platform SMC each access front-end server or client are managed.
Embodiment 3, are provided for safety monitoring, are provided with some administrative centers platform, a kind of supervisory control system and method based on isomery internet and local area network (LAN).
As shown in figure 14, a kind of supervisory control system and method based on heterogeneous network, its basic structure and operation principle are identical with embodiment 2, its difference is, administrative center platform SMC is a kind of management software that is built in FTP client FTP, with client be one on physical structure, but its logical construction and method for supervising are all identical with embodiment 2.
Claims (10)
1. the method for supervising based on heterogeneous network is characterized in that it comprises the steps:
1) on the public network section of heterogeneous network, at least one is set is independent of client and front-end server and has the fixedly public network server of IP;
2) set the condition of work or the parameter of each front end system be connected in the heterogeneous network, front-end server, client respectively;
3) before client connected front-end server in connection or by public network, the local port localPort by oneself preparing to be used to monitor sent the UDP message bag to public network server;
4) after described public network server receives this UDP message bag, can obtain the public network port fireWarePort and the public network IP of UDP message bag, and the public network port and the former road of IP of packet are returned;
5) feedback data packet of public network server is forwarded to client after arriving the router with network port mapping function, thereby to know localPort corresponding port on router be public network port fireWarePort to client; When client carrying out UDP when connecting, this correspondence port of being known is notified to public network server in advance;
6) front end system is with the supervisory signal collection of its guarded region and export front-end server to;
7) front-end server is converted to stream medium data with this supervisory signal, and is sent to the fireWarePort port of router;
8) send to the stream medium data of router fireWarePort port, then be forwarded to the localPort port of client, arrive client; Set up data communication link between front-end server and the client thus, and by these link bidirectional transmission data;
When 9) data of setting up when step 8) connect link generation interruption, repeating step 2)～8), rebulid data and connect link;
10) after the step 8) stream medium data arrives client, client promptly according to its previous setting, specifies front-end server to transmit control signal from trend when finding its preset working condition of this data fit; Simultaneously, client also according to preestablishing or interactive instruction, is write down or is stored received stream medium data automatically;
11) control signal that sends in the step 10), the data of setting up along described step 8) connect link, export front-end server to; Front-end server is carried out this control signal, or exports the front end system execution after the conversion to, realizes the automatic control to the scene.
2. method for supervising as claimed in claim 1 is characterized in that, described step 7) can also comprise the steps:
A) when the front end server is received audio signal in the supervisory signal that front end system transmits, decode earlier, encode again, be converted into stream medium data;
B) receive the supervisory signal that front end system transmits when the front end server, when finding to meet its preset working condition,, send message from trend given client end promptly according to its previous setting;
Described client promptly according to preestablishing or interactive instruction, is sent control signal corresponding to front-end server automatically after receiving this message; Simultaneously, client also according to preestablishing or interactive instruction, is write down or is stored received stream medium data automatically; Carry out described step 11) then.
3. method for supervising as claimed in claim 1 or 2 is characterized in that, described step 2), also comprise the steps:
A) described one or more client is set to one group;
B) described one or more front end system is set to one group, and one or more groups front end system is inserted a front-end server simultaneously, receives and handle its data simultaneously by this front end system;
C) described one or more front-end server is set to one group, and specifies the message of its transmission, is received and is handled by same or same group of client.
4. method for supervising as claimed in claim 3 is characterized in that,
Described step 1) also comprises: on the public network section of described heterogeneous network, be provided with at least one be parallel to public network server, itself also have the fixedly dynamic IP server DIPS of IP, be used for obtaining the dynamic IP of described front-end server; In described heterogeneous network, an administrative center platform SMC that can connect client and front-end server can be set at least also;
Described step 2) also comprises the steps:
A) described one or more administrative center platform SMC is set to one group;
B) some groups of administrative center platform SMC are carried out cascade;
C) with described one or more groups front-end server, one or more groups client respectively by an administrative center of network insertion platform SMC;
D) by wherein one or more administrative center platform SMC, front-end server or client that each administrative center platform SMC is inserted manage.
5. method for supervising as claimed in claim 4 is characterized in that, described step 7) and 11) described in message send, be to adopt udp protocol to transmit, and have the data field of a sequence number at each UDP message header; When front end server during to message of the every transmission of client, the value of this data field is convenient to the recipient and is judged repetition message with it from adding 1.
6. method for supervising as claimed in claim 5 is characterized in that, described step 2) described in setting, also comprise the setting of carrying out in real time by man-machine interaction mode; Transmitting control signal in the described step 10) also comprises the transmission of carrying out in real time by man-machine interaction mode.
7. the supervisory control system based on heterogeneous network comprises the interconnective heterogeneous network of plurality of sections, some front end systems, front-end server system and FTP client FTP; Described heterogeneous network comprises at least one section public network and one section Intranet, is provided with the router that at least one place has network port mapping function between two network segments; Front-end server and client are connected on the different network segments; Described front end system is connected with front-end server, described front-end server is connected with Intranet by public network with client, it is characterized in that, on the public network section of heterogeneous network, also be provided with at least one and be independent of client and front-end server and have the fixedly public network server of IP; Described public network server links to each other with described FTP client FTP with described front-end server system by IP network, and described front-end server system is connected by the UDP procotol with described FTP client FTP.
8. supervisory control system as claimed in claim 7, it is characterized in that, described front end system is by the input subsystem that is used for all devices that obtains and export to front-end server of field datas such as audio frequency and video, temperature, humidity, constituent of air in the guarded region is formed, and is used for the output subsystem that light, sound, electricity, all devices of machine to guarded region field control or management form and forms jointly;
Described front-end server system, comprise somely can work independently, the front-end server of built-in embedded media processor EMP and embedded real-time multi-task operating system software RTOS, this server is used for receiving and handling the signal of front end input subsystem, encoded, processing such as storage and send to client, be used for receiving and handling the control signal that client is sent simultaneously, being carried out or export to front end system carries out, support kinds of platform, procotol and access way, and support the device of the concurrent visit of multiple spot; A whole set of circuit arrangement is in the housing of a sealing;
Described FTP client FTP comprises the plurality of client end that can work independently; Described client is to be used to connect front-end server and to browse equipment and software with front monitoring front-end server system data, comprises watchdog subsystem and control subsystem two parts; When client terminal to discover meets the data of its default situation, automatically front-end server is sent control signal corresponding; Simultaneously, client also according to preestablishing or interactive instruction, is write down or is stored received stream medium data automatically.
9. supervisory control system as claimed in claim 8 is characterized in that, described front-end server also is provided with the general input/output interface GPIO that is used for receiving equipment such as various field datas, connection transducer; Also can built-in automatic alarm module.
10. as claim 7 or 8 or 9 described supervisory control systems, it is characterized in that, on described heterogeneous network, also be provided be connected between front-end server and the client, the parallel or serial with described public network server, be used for to front-end server and client manage, and several administrative centers platform SMC of managing each other; Can also be provided with at least one be parallel to public network server, itself also have the fixedly dynamic IP server DIPS of IP, be used for obtaining the dynamic IP of described front-end server; Described each administrative center platform SMC can be connected with several front-end servers and client respectively, and can carry out grouping management to it; Between described each administrative center platform SMC, can carry out cascade, to realize the management of multilayer level by network.
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