CN103853143A - Long-distance wireless monitoring network system applied in power transmission line of power supply system - Google Patents
Long-distance wireless monitoring network system applied in power transmission line of power supply system Download PDFInfo
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Abstract
The invention discloses a long-distance wireless monitoring network system applied in power transmission line monitoring and early-warning network system. The system comprises a monitoring front end and a monitoring center, wherein the monitoring front end adopts an embedded processor and an embedded operating system and combines a newest H.264 audio/video compression/decompression technology, a network technology, a USB (Universal Serial Bus) communication technology, a CAN (Controller Area Network) bus technology, a 4G wireless communication (supporting CDMA 2000,WCDMA,TD-SCDMA) technology, a WIFI (wireless fidelity) wireless communication technology, an intelligent sensor technology and a high-ranking vehicle power supply management technology in the IT field, and the system is suitable for monitoring power transmission lines under different climates and environments. The long-distance wireless monitoring network system provided by the invention has the advantages that the effective monitoring and warning is realized under the bad environment in which people are not suitable to go out, and a clear video image and GPS (global position system) accurate positioning can accurately and effectively reflect the status information of the scene power transmission line in time, so that an electric system can rapidly take corresponding measures.
Description
Technical field
The present invention relates to a kind of long-distance wireless monitoring network system, relate in particular to a kind of long-distance wireless monitoring network system that is applied to electric power system transmission line of electricity.
Background technology
In recent years, along with the development of computer network, the communication technology and multimedia technology, traditional supervisory system is also constantly also constantly upgraded towards new future development.For with computer correspondence, traditional analog machine has started to change to digital device; Numerical data has started transmit easily and manage, and the digital product that can connect other by the security protection network equipment expands range of application.The demand of teletransmission is also increasing, and this shows that Video Supervision Technique enters digital Age comprehensively.Along with the development of the network information, many buildingss have possessed LAN (Local Area Network) and wide area network, and having many requirements is the upgrade-systems under PC controls; Image processing has many elasticity with PC; Multiple data preservation hardware (hard disk, backup CD etc.) development is very fast, and condition has been created in the development that develops into Video Supervision Technique of infrastructure.
Because transmission line of electricity is dispersed on wide region, the equipment Inspection parameter that forms is numerous, storage data volume is huge, so very large to the workload administering and maintaining of transmission line of electricity.For improving the management level of transmission line of electricity, strengthen the reliability of Operation of Electric Systems, the operation conditions of the circuit that requirement circuit operating management department is administered it has comprehensively to be understood and grasped, defect to circuit and potential faults have emphasis, regularly arrange maintenance, and carry out the preparation of human and material resources for the service work that is about to carry out.Therefore how scientifically to grasp the running status of transmission line of electricity and arrange maintenance to become important problem of line management department.In this case, in the urgent need to setting up transmission line of electricity running state real-time monitoring system, for maintenance and the reliability service of transmission line of electricity are established solid foundation.
Summary of the invention
The object of the present invention is to provide a kind of long-distance wireless monitoring network system that is applied to electric power system transmission line of electricity, can solve following technical matters: system is divided into front monitoring front-end and background monitoring center two parts, promote the stability of circuit induction system and the safety of relevant device, particularly process the real-time transmission of video of core high speed taking DSP as multimedia, coordinate early warning system, effectively promoted the three-dimensional monitoring to field data, for circuit carry networking collection, transmission, processing provide efficiently, accurately, timely service.System is divided into front monitoring front-end and Surveillance center's two parts.Front monitoring front-end has adopted flush bonding processor and embedded OS, combine H.264 audio frequency and video compression/de-compression technology up-to-date in IT field, network technology, usb communication technology, CAN bussing technique, 4G wireless telecommunications (support CDMA 2000, WCDMA, TD-SCDMA) technology, WIFI wireless communication technique, intelligent sensor technology, advanced car power management techniques, is applicable to the transmission line of electricity monitoring under various weathers and environment.Under the condition that badly should not go on a journey at environment, appoint and so can realize effective monitoring and warning, video image and GPS accurately locate the status information that reflects on-the-spot transmission line of electricity on energy accurate and effective and ground clearly, make electric system can make rapidly corresponding behave.
The present invention adopts following technical scheme to realize:
A long-distance wireless monitoring network system that is applied to electric power system transmission line of electricity, is characterized in that, this monitoring network system connects by wired and/or wireless network, comprising:
Front monitoring front-end: described front monitoring front-end carries out Real-time Collection by sensor assembly to environmental parameter, the data that gather send to Surveillance center's processing of packing, and gathered data real-time radio is sent to base station, in described front monitoring front-end, be provided with DSP multimedia processor;
Surveillance center: described Surveillance center receives the monitor message of being sent by described front monitoring front-end by gateway, transfers to each server of Surveillance center to carry out respective handling;
Human-machine interface module: carry out communication for operator and Surveillance center;
Human-machine interface module is divided into very color touch screen and the digital button two parts of 4X4.Human-machine interface module is communicated by letter mutually with special digital interface by IO mouth with DSP.Operator can arrange different threshold value of warning, the switching of normal mode of operation and unmanned automatic early-warning pattern, and the mode of note and Surveillance center carry out communication.
Prior-warning device: for automatic trigger alarm system.Prior-warning device is connected with DSP multimedia processor by universal I/O port, and warning device is by infrared sensor, and red alarm pilot lamp and alarm bell form.If there is accident (as circuit breaks down, transformer stolen), trigger alarm system automatically, and locate rapidly the site of an accident according to GPS, prevention dangerous act efficiently and effectively.For fear of the defect of system, be also provided with automatic alarm pattern in Surveillance center, when supervisor finds hazardous events can manual activation warning system.The sensitivity of warning system, kind setting can be revised as the case may be.
Environmental parameter acquisition module: comprise video acquisition module, micro climate acquisition module and insulator acquisition module.
Further, described front monitoring front-end also comprises:
GPS module: described GPS module is communicated by letter with described DSP multimedia processor by RS232 communication mode, passes to DSP multimedia processor by the current geographical location information of each transmission circuit obtaining;
Electromagnetic sensor: described electromagnetic sensor is for obtaining the information including 50Hz power frequency component;
The monitor signal of reception is carried out frontal chromatography processing by electromagnetic sensor, take out 50HZ power frequency component, exclude the interference signal through digital filtering, analyze its signal intensity, in the time reaching preset value, send wireless alarm signal to receiving end, receiving end is reported to the police receiving after this signal, and prompting subscriber equipment has approached forceful electric power, please note safety, early warning system is the voltage early warning to the above power frequency 50-60Hz of 220V only, and circuit is anti-interference, reliable and stable by digital filtering.
Temperature Humidity Sensor: for obtaining on-the-spot humiture information;
Temperature Humidity Sensor is crossed A/D by the humiture information exchange detecting and is converted into the digital signal that DSP can identify, and the professional software carrying according to system judges micro climate and insulator contamination situation now simultaneously, carries and improves stability for circuit.
High definition pick-up head: for the simulating signal at acquisition monitoring scene;
CCD video acquisition module: for gathering vision signal, described CCD video acquisition module is connected with DSP by high-definition digital signal input line, and DSP multimedia video processing module is carried out video compression coding processing;
Described DSP multimedia processor also for: the environmental information of other sensor collections transmitted by corresponding digital interface simultaneously and packed integratedly, finally by DSP multimedia processor, these information exchanges being crossed to 4G wireless transport module and launch.
Further, in described Surveillance center, be provided with server, interconnected with LAN (Local Area Network) form between each server, and relevant information is uploaded to and shared on website; In Surveillance center, also comprise:
Monitor station: for the integrated information obtaining is resolved, use H.264 soft decoding technique real-time decoding video flowing for HD video digital signal, protocol requirement for the packet of environmental parameter during according to transmission is resolved one by one, can be according to the high-definition image information and the environmental parameter that obtain, judge intuitively and whether need the responsive measures processing of following up;
Database server: for the monitor message compression of every day is stored, in order to playback, put on record etc. used;
The webserver: as the tie of Surveillance center and internet client, monitor message is published to public web site;
Management server: the management coordination of whole system and maintenance are processed for electric system department; Maintenance of Electric Transmission Line person can utilize the related software of management server to obtain various information needed, analyzes accurately transmission line of electricity status information (as near voltage alarm failure point of power transmission line, engineering machinery etc.) now.
Client: for accessing the public web site of described Surveillance center.
The monitor message that front monitoring front-end sends is given to Surveillance center's gateway of far-end by base station, enter the each server of Surveillance center and carry out respective handling.Interconnected with LAN (Local Area Network) form between each server, and relevant information is uploaded to and shared on website.Center host adopts professional monitoring software, and for application program provides interface, can allow application call, control remote monitoring image.Utilities Electric Co. according to the information passed back, analyzes status information now of transmission line of electricity (insulator pollution monitoring, micro climate monitoring, line oscillation and icing monitor, shaft tower tower material is antitheft etc.) in Surveillance center.Mobile phone can be by the public web site at mobile phone broadband services access monitoring center, even far away from also having at fingertips to the operation conditions of transmission line of electricity thousands of miles away simultaneously.
Further, described client comprises mobile phone, panel computer, even like this far away from also devising strategies at the headquarters to transmission line of electricity thousands of miles away, cellphone subscriber just can log in access monitoring central server public web site anywhere, obtain corresponding information, facilitate supvr to monitor anywhere or anytime.
Further, described human-machine interface module comprises very color touch screen and the digital button of 4X4, and human-machine interface module is communicated by letter mutually with digital interface by IO mouth with DSP.
Further, described prior-warning device is connected with DSP multimedia processor by universal I/O port, prior-warning device comprises infrared sensor, red alarm pilot lamp and alarm bell, if have accident (as lawless person steal transformer or transformer broken string, displacement, vibrations etc. destroyed, move situation etc.), automatically trigger alarm system, and locate rapidly the site of an accident according to GPS, prevention dangerous act efficiently and effectively.For fear of the defect of system, be also provided with automatic alarm pattern in Surveillance center, when supervisor finds hazardous events can manual activation warning system.
Further, described wireless network connected mode is 4G communication pattern or wifi pattern.
Further, front monitoring front-end comprises master and slave two kinds of mode of operations: from pattern, collection result unification is sent to a front monitoring front-end by the front monitoring front-end in LAN (Local Area Network), and sends to base station by he is unified by 4G technology;
Or: under holotype, all front monitoring front-ends do not carry out LAN (Local Area Network) to be built, and utilizes respectively the 4G module of self to send data to base station.
Useful technique effect of the present invention is:
Utilize the present invention can realize unmanned remote monitoring at large-area transmission line of electricity, thereby working line reliability is improved, raise labour productivity simultaneously, reduce operating cost, effectively change the traditional maintenance of transmission line of electricity, maintaining method, by round-the-clock the relevant parameters that affects circuit operation and insulator chain dielectric level under running status that gathers, data information transfer is arrived to analyzing and processing center, automatic analysis transmission line of electricity running status, the filthy state of insulator and development trend and insulator chain dielectric level, power supply department is implemented repair based on condition of component according to real-time running state, effectively prevention and minimizing line accident, improve circuit operational efficiency and management level.
Brief description of the drawings
Fig. 1 is the overall schematic block diagram of wireless video monitoring network system of the present invention.
Fig. 2 is the concrete structure block diagram of system monitoring front end.
Fig. 3 is system environmental information acquisition module hardware block diagram.
Fig. 4 is that leakage current detects (filthy monitoring) process flow diagram.
Fig. 5 is flow processing figure.
Fig. 6 is that the three-bristle cudrania of monitoring network system flutters structural drawing.
Embodiment
By the description to embodiment below; to more contribute to public understanding the present invention; but specific embodiment given applicant can't be considered as to the restriction to technical solution of the present invention, any definition to parts or technical characterictic change and/or to one-piece construction do form and immaterial conversion all should be considered as the protection domain that technical scheme of the present invention limits.
In background technology, point out, how scientifically to grasp the running status of transmission line of electricity and arrange maintenance to become important problem of line management department, therefore we are in the urgent need to setting up transmission line of electricity running state real-time monitoring system, for maintenance and the reliability service of transmission line of electricity are established solid foundation.The proposition of above problem impels 4G wireless module and the multimedia processor based on DSP to be incorporated into wireless monitor field, 4G technology can realize radio roaming in the world better, and process the media forms such as image, music, video flowing, much information services such as comprising web page browsing, teleconference, ecommerce is provided, also will considers the favorable compatibility with existing second-generation system simultaneously.In the environment of indoor, outdoor and driving, can support respectively to 2Mbps(megabit/per second), 384kbps(kilobit/per second) and the transmission speed (this numerical value can change according to network environment) of 144kbps.The high bandwidth of 4G network technology, highly cover, the feature such as terminal cost is low, solved the bandwidth bottleneck problem of original wireless video monitoring, be a kind of wireless video transmission solution that can generally apply.
In the present embodiment, in front monitoring front-end, be provided with DSP multimedia processor, (H.264 multimedia processor based on DSP has high integration peripheral hardware and multiple format HD video encoding function, MPEG4, MPEG2, MJPEG, JPEG, WMV9/VC1), can really realize the high speed encoding and decoding of HD video.Real-time video monitoring system realize information acquisition promptly and accurately, information processing operation is simple, easy to maintenance, lectotype selection collocation is rationally, the ratio of performance to price is high, system long-term operation is reliable and stable.Wireless monitor network system can be according to the demand of the ruuning situation of transmission line of electricity and Utilities Electric Co., monitoring image is real-time transmitted to Surveillance center, integrate, share by image resource, in real time, clear, the real-time running state of understanding and grasping intuitively transmission line of electricity, guarantee power system security, stable, operation reliably.
Be applied to a long-distance wireless monitoring network system for electric power system transmission line of electricity, this monitoring network system connects by wired and/or wireless network, comprising:
Front monitoring front-end: front monitoring front-end carries out Real-time Collection by sensor assembly to environmental parameter, the data that gather send to Surveillance center's processing of packing, and gathered data real-time radio is sent to base station, in front monitoring front-end, be provided with DSP multimedia processor;
Surveillance center: Surveillance center receives the monitor message of being sent by front monitoring front-end by gateway, transfers to each server of Surveillance center to carry out respective handling;
Center host adopts professional monitoring software, and for application program provides interface, can allow application call, control remote monitoring image.Monitor station software is resolved the integrated information obtaining, use H.264 soft decoding technique real-time decoding video flowing for HD video digital signal, protocol requirement for the packet of environmental parameter during according to transmission is resolved one by one, can be according to the high-definition image information and the environmental parameter that obtain, judge intuitively and whether need the responsive measures processing of following up.
Surveillance center's control and monitor console basic function:
1, information is integrated: monitoring software automatically by multisensor obtain environmental parameter information show together with video image, abundant monitor message facilitates monitor staff to on-the-spot grasp macroscopical.
2, video image arranges adjustable: video image can carry out the multiple adjustings such as resolution, brightness, contrast, color.Larger in environmental interference like this, when larger delay appears in HD video transmission, can reduce picture quality, reduce transmitted data amount, thereby improve real-time.
3, statistics drawing function: the parameter of set period can be changed and shows with the form of chart, facilitate the statistical study of managerial personnel to historical data, find rule.
4, warning function: the positional information obtaining according to GPS generates the layout of whole transmission line of electricity automatically, and each cursor represents an equipment, if equipment meeting working properly is green, when occurring that alarm and fault can become red blink states, prompting monitor staff.Meanwhile, the automatic early-warning function of front monitoring front-end also can be sent early warning signal in scene.
5, online playback video recording, captures picture: can carry out network remote playing back videos, facilitate the long-range historical summary of user to have access to, and can capture by long-distance video picture, directly carry out the information such as network evidence and preserve.
6, support Picture switch, many pictures are watched.Support many pictures to play simultaneously, make user can intuitively carry out the overall situation and control.Monitoring central server hardware environment arranges difference according to the actual requirements.
Human-machine interface module: carry out communication for operator and Surveillance center;
Human-machine interface module is divided into very color touch screen and the digital button two parts of 4X4.Human-machine interface module is communicated by letter mutually with special digital interface by IO mouth with DSP.Operator can arrange different threshold value of warning, the switching of normal mode of operation and unmanned automatic early-warning pattern, and the mode of note and Surveillance center carry out communication.
Prior-warning device: for automatic trigger alarm system.Prior-warning device is connected with DSP multimedia processor by universal I/O port, and warning device is by infrared sensor, and red alarm pilot lamp and alarm bell form.If there is accident (as circuit breaks down, transformer stolen), trigger alarm system automatically, and locate rapidly the site of an accident according to GPS, prevention dangerous act efficiently and effectively.For fear of the defect of system, be also provided with automatic alarm pattern in Surveillance center, when supervisor finds hazardous events can manual activation warning system.The sensitivity of warning system, kind setting can be revised as the case may be.
Environmental parameter acquisition module: comprise video acquisition module, micro climate acquisition module and insulator acquisition module.
In the present embodiment, front monitoring front-end also comprises:
GPS module: GPS module is communicated by letter with DSP multimedia processor by RS232 communication mode, passes to DSP multimedia processor by the current geographical location information of each transmission circuit obtaining;
Electromagnetic sensor: electromagnetic sensor is for obtaining the information including 50Hz power frequency component;
The monitor signal of reception is carried out frontal chromatography processing by electromagnetic sensor, take out 50HZ power frequency component, exclude the interference signal through digital filtering, analyze its signal intensity, in the time reaching preset value, send wireless alarm signal to receiving end, receiving end is reported to the police receiving after this signal, and prompting subscriber equipment has approached forceful electric power, please note safety, early warning system is the voltage early warning to the above power frequency 50-60Hz of 220V only, and circuit is anti-interference, reliable and stable by digital filtering.
Temperature Humidity Sensor: for obtaining on-the-spot humiture information;
Temperature Humidity Sensor is crossed A/D by the humiture information exchange detecting and is converted into the digital signal that DSP can identify, and the professional software carrying according to system judges micro climate and insulator contamination situation now simultaneously, carries and improves stability for circuit.
High definition pick-up head: for the simulating signal at acquisition monitoring scene;
CCD video acquisition module: for gathering vision signal, CCD video acquisition module is connected with DSP by high-definition digital signal input line, and DSP multimedia video processing module is carried out video compression coding processing;
DSP multimedia processor also for: the environmental information of other sensor collections transmitted by corresponding digital interface simultaneously and packed integratedly, finally by DSP multimedia processor, these information exchanges being crossed to 4G wireless transport module and launch.
In Surveillance center, be provided with server, interconnected with LAN (Local Area Network) form between each server, and relevant information is uploaded to and shared on website; In Surveillance center, also comprise:
Monitor station: for the integrated information obtaining is resolved, use H.264 soft decoding technique real-time decoding video flowing for HD video digital signal, protocol requirement for the packet of environmental parameter during according to transmission is resolved one by one, can be according to the high-definition image information and the environmental parameter that obtain, judge intuitively and whether need the responsive measures processing of following up;
Database server: for the monitor message compression of every day is stored, in order to playback, put on record etc. used;
The webserver: as the tie of Surveillance center and internet client, monitor message is published to public web site;
Management server: the management coordination of whole system and maintenance are processed for electric system department; Maintenance of Electric Transmission Line person can utilize the related software of management server to obtain various information needed, analyze accurately status information now of transmission line of electricity (as near voltage alarm failure point of power transmission line, engineering machinery, as insulator pollution monitoring, micro climate monitoring line, road are waved with icing and monitored, shaft tower tower material is antitheft etc.), mobile phone can be by the public web site at mobile phone broadband services access monitoring center, even far away from also having at fingertips to transmission line of electricity thousands of miles away simultaneously.
Client: for accessing the public web site of described Surveillance center.Client comprises mobile phone, panel computer, even like this far away from also devising strategies at the headquarters to transmission line of electricity thousands of miles away, cellphone subscriber just can log in access monitoring central server public web site anywhere, obtains corresponding information, facilitates supvr to monitor anywhere or anytime.
The monitor message that front monitoring front-end sends is given to Surveillance center's gateway of far-end by base station, enter the each server of Surveillance center and carry out respective handling.Interconnected with LAN (Local Area Network) form between each server, and relevant information is uploaded to and shared on website.Center host adopts professional monitoring software, and for application program provides interface, can allow application call, control remote monitoring image.Utilities Electric Co. according to the information passed back, analyzes status information now of transmission line of electricity (insulator pollution monitoring, micro climate monitoring, line oscillation and icing monitor, shaft tower tower material is antitheft etc.) in Surveillance center.Mobile phone can be by the public web site at mobile phone broadband services access monitoring center, even far away from also having at fingertips to the operation conditions of transmission line of electricity thousands of miles away simultaneously.
Human-machine interface module comprises very color touch screen and the digital button of 4X4, and human-machine interface module is communicated by letter mutually with digital interface by IO mouth with DSP.
Prior-warning device is connected with DSP multimedia processor by universal I/O port, prior-warning device comprises infrared sensor, red alarm pilot lamp and alarm bell, if have accident (as lawless person steal transformer or transformer broken string, displacement, vibrations etc. destroyed, move situation etc.), automatically trigger alarm system, and locate rapidly the site of an accident according to GPS, prevention dangerous act efficiently and effectively.For fear of the defect of system, be also provided with automatic alarm pattern in Surveillance center, when supervisor finds hazardous events can manual activation warning system.
Wireless network connected mode is 4G communication pattern or wifi pattern.
Fig. 2 is the hardware block diagram of front monitoring front-end.The collection of abundant field data is all obtained by the co-ordination of front monitoring front-end modules, comes specifically to introduce principle of work and flow process between the each module of front end below:
Global position system GPS module, by RS232 mode and DSP module communication, is passed to DSP module by the current geographical location information of each on-the-spot extension set obtaining.
The communication of WiFi module for setting up LAN (Local Area Network) between front monitoring front-end, is connected with dsp processor with UART serial port form.Front monitoring front-end can arrange two kinds of mode of operations of principal and subordinate.From pattern, the front monitoring front-end in LAN (Local Area Network) can send to collection result unification a front monitoring front-end, and sends to base station by he is unified by 4G technology; Under holotype, all front monitoring front-ends do not carry out LAN (Local Area Network) to be built, and utilizes respectively the 4G module of self to send data to base station.Such benefit is: (1) economizes on resources, and 4G module is taken electricity than WiFi, and all front ends use the work of 4G module together, and electric weight expends greatly, if the unified data that send of composition LAN (Local Area Network) can economize on resources preferably; (2) when there being the 4G module of a front end to break down and can not process in time, can utilize the form of LAN (Local Area Network), data sharing be arrived to other front end, then transmit, improved the stability of system and held fault ability.
4G module is interconnected by form and the DSP of UART serial ports, and information packed DSP is sent, and also can receive the instruction that Surveillance center sends simultaneously.
For convenient operation and setting to monitoring frontend, front monitoring front-end has been set up human-machine interface module, is divided into the digital button two parts of very color touch screen and 4X4.Human-machine interface module is communicated by letter mutually with special digital interface by IO mouth with DSP.Operator can arrange different threshold value of warning, the switching of normal mode of operation and unmanned automatic early-warning pattern, and the mode of note and Surveillance center carry out communication.
Warning device is by multiple infrared sensors, and an alarm bell and a red warning lamp form.Alarm bell is connected with DSP multimedia processor by IO mouth with warning lamp, and infrared sensor is connected with the A/D input end of DSP through modulate circuit.In backcountry, system arranges the modes of warning that starts front monitoring front-end device, and being placed in the other infrared sensor of each on-the-spot extension set can start simultaneously.If there is accident (stealing as artificially privately swarmed into or other destructions), can trigger infrared sensor and produce change in voltage, when this variation exceedes the threshold value of DSP setting, produce alarm level, thereby producing alarm interrupts, program response is interrupted, and open alarm bell and alarm lamp, and related GPS information sends to Surveillance center in time alarm.Monitoring center system is located rapidly the site of an accident according to warning message, thus prevention dangerous act efficiently and effectively.For fear of the defect of system, be also provided with automatic alarm pattern in Surveillance center, when supervisor finds hazardous events can manual activation warning system.The sensitivity of warning system, kind setting can be revised as the case may be.
Environmental parameter acquisition module is divided into video acquisition module, and micro climate collection and insulator gather three parts.Particular hardware block diagram is as shown in Figure 3: adopt high accuracy number Temperature Humidity Sensor to obtain local transmission line of electricity environment temperature and humidity around, wind-force, wind transducer count wind-force and wind direction at that time, judge the filthy situation of circuit according to humiture, sensor is connected with dsp processor by I2C serial bus interface simultaneously.Simulate the features such as the temperature sensor of output is compared with humidity sensor, and it is good that the integrated structure of high accuracy number Temperature Humidity Sensor makes it have quality, and reaction is fast, anti-interference, and price is low with original stand alone type.Video acquisition module is set up in the The Cloud Terrace of three axle rotations, can make CCD camera Multi-angle omnibearing cover observation station.CCD camera is equipped with infrared spotlight, solves the lighting problem under the rugged surroundings such as dense fog, heavy rain.Cam device is provided with lightning measure, in case the thunderbolt of outdoor thunderstorm weather causes crushing blow to whole system.The high definition analog video signal of CCD camera collection is input to HD video conversion chip, and HD video conversion chip can be realized the digital conversion of R/Pr, G/Y, B/Pb signal, and conversion ratio is up to 165 MHz, and resolution is up to 1080P.DM365 configures it by iic bus.The video flowing of having changed is exported to DM365 and is processed.
VPFE interface on DM365, can support the video input form of multiple format.A front monitoring front-end can support 4 road HD videos to input simultaneously, processes video flowing compared with monolithic in the past, has greatly saved control chip resource, has reduced cost.H.264, DM365 mainly compresses inputting video data, and the environmental information of simultaneously other sensor collections is also passed to DSP by corresponding digital interface and packed integrated.System provides high-definition digital video input interface simultaneously, if the peripheral hardware camera using is digital without analog to digital conversion, uses high definition input.
The embedded ARM microprocessor of integrated information output: DM365, this processor core heart function is that data stream is forwarded.ARM first completes the encapsulation of packed data, then completes the transmission of packet by 4G module.In addition ARM is also responsible for resolving and receives data, the correlation parameter order that PC is sent forwards, carry out corresponding computing setting (rate of video compression code, frame per second etc.), realize the control (cradle head controllor, panalarm etc.) to peripheral hardware, the initialization by GPIO to other modules in system etc. by serial ports.
Finally by DSP processing module, these information exchanges being crossed to 4G wireless transport module launches.The advantage of DM365 is: 1 advanced person's compression algorithm accesses in 2G/4G network environment, and minimum requirements 30Kbps uploading bandwidth can meet mobile phone terminal and watch demand, and the uploading bandwidth of minimum 100Kbps can meet the demand that mobile phone terminal and computer end are watched simultaneously; 2 can ensure smooth video-see effect on 2G/4G mobile phone terminal, and code check only remains on 40Kbps-60Kbps; 3 employings meet JVT(ITU-T, ISO united organization) the H.264 hard-disk cartridge of standard, real-time coding compressed capability, also supports the subcode stream that every road is independent, can prioritised transmission subcode stream when guaranteeing network congestion, than average 39% the bit rate of saving of MPEG-4; There is powerful error resilience performance, and antijamming capability.
The external EEPROM of system, SD card, DDR2 SDRAM and NAND Flash are as chip external memory, by BTSEL[2:0 is set] be that 000 to select Starting mode be NANDFlash BOOT pattern.The AEMIF interface of DM365 can be supported NANDFlash and NOR Flash, because NAND Flash memory capacity is large, low price, selects NAND Flash in the present embodiment.DM365 provides special DDR2 control interface, 16 position datawires, and 14 bit address lines and 3 block selection signals, can support the storage space of 256 MByte.SD cartoon is crossed SDIO mouth and DSP interconnection, and EEPROM is by SPI Serial Peripheral Interface (SPI) and DSP interconnection.
Certainly; the present invention can also have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (8)
1. a long-distance wireless monitoring network system that is applied to electric power system transmission line of electricity, is characterized in that, this monitoring network system connects by wired and/or wireless network, comprising:
Front monitoring front-end: described front monitoring front-end carries out Real-time Collection by sensor assembly to environmental parameter, the data that gather send to Surveillance center's processing of packing, and gathered data real-time radio is sent to base station, in described front monitoring front-end, be provided with DSP multimedia processor;
Surveillance center: described Surveillance center receives the monitor message of being sent by described front monitoring front-end by gateway, transfers to each server of Surveillance center to carry out respective handling;
Human-machine interface module: carry out communication for operator and Surveillance center;
Prior-warning device: for automatic trigger alarm system;
Environmental parameter acquisition module: comprise video acquisition module, micro climate acquisition module and insulator acquisition module.
2. the long-distance wireless monitoring network system that is applied to electric power system transmission line of electricity according to claim 1, is characterized in that, described front monitoring front-end also comprises:
GPS module: described GPS module is communicated by letter with described DSP multimedia processor by RS232 communication mode, passes to DSP multimedia processor by the current geographical location information of each transmission circuit obtaining;
Electromagnetic sensor: described electromagnetic sensor is for obtaining the information including 50Hz power frequency component;
Temperature Humidity Sensor: for obtaining on-the-spot humiture information;
High definition pick-up head: for the simulating signal at acquisition monitoring scene;
CCD video acquisition module: for gathering vision signal, described CCD video acquisition module is connected with DSP by high-definition digital signal input line, and DSP multimedia video processing module is carried out video compression coding processing;
Described DSP multimedia processor also for: the environmental information of other sensor collections transmitted by corresponding digital interface simultaneously and packed integratedly, finally by DSP multimedia processor, these information exchanges being crossed to 4G wireless transport module and launch.
3. the long-distance wireless monitoring network system that is applied to electric power system transmission line of electricity according to claim 1, it is characterized in that, in described Surveillance center, be provided with server, interconnected with LAN (Local Area Network) form between each server, and relevant information is uploaded to and shared on website; In Surveillance center, also comprise:
Monitor station: for the integrated information obtaining is resolved, use soft decoding technique real-time decoding video flowing H.264 for HD video digital signal, the protocol requirement for the packet of environmental parameter during according to transmission is resolved one by one;
Database server: for the monitor message compression of every day is stored, in order to playback, put on record etc. used;
The webserver: as the tie of Surveillance center and internet client, monitor message is published to public web site;
Management server: the management coordination of whole system and maintenance are processed for electric system department.
4. the long-distance wireless monitoring network system that is applied to electric power system transmission line of electricity according to claim 1, is characterized in that, described client comprises mobile phone, panel computer.
5. the long-distance wireless monitoring network system that is applied to electric power system transmission line of electricity according to claim 1, it is characterized in that, described human-machine interface module comprises very color touch screen and the digital button of 4X4, and human-machine interface module is communicated by letter mutually with digital interface by IO mouth with DSP.
6. the long-distance wireless monitoring network system that is applied to electric power system transmission line of electricity according to claim 1, it is characterized in that, described prior-warning device is connected with DSP multimedia processor by universal I/O port, and prior-warning device comprises infrared sensor, red alarm pilot lamp and alarm bell.
7. according to the long-distance wireless monitoring network system that is applied to electric power system transmission line of electricity described in any one in claim 1 to 6, it is characterized in that, described wireless network connected mode is 4G communication pattern or wifi pattern.
8. according to the long-distance wireless monitoring network system that is applied to electric power system transmission line of electricity described in any one in claim 1 to 6, it is characterized in that, front monitoring front-end comprises master and slave two kinds of mode of operations: from pattern, collection result unification is sent to a front monitoring front-end by front monitoring front-end in LAN (Local Area Network), and send to base station by he is unified by 4G technology;
Or: under holotype, all front monitoring front-ends do not carry out LAN (Local Area Network) to be built, and utilizes respectively the 4G module of self to send data to base station.
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