CN104935886A - Indoor intelligent video monitoring system based on SOPC - Google Patents
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Abstract
The invention discloses an indoor intelligent video monitoring system based on SOPC, comprising a CCD camera, a holder, a stepping motor, a motor-drive circuit, a sensor group, a master controller combined by a Nios II soft core processor and a Cyclone II, a VGA display module, an alarm module and a computer terminal. The indoor intelligent video monitoring system is a platform for tracking an object and alarming by basing on a robot vision technology of the SOPC technology and the sensor technology, and is capable of alarming according to the setting values of temperature, humidity, smog and people activity and transmitting the alarm information to the remote user. The indoor intelligent video monitoring system based on the SOPC is a monitoring system which can finish the mission in the short time according to the user customization, can support the remote network monitoring, and is applicable to the household, the shopping mall and the library.
Description
Technical field
The present invention relates to technical field of video monitoring, particularly relate to a kind of indoor intelligent video monitoring system based on SOPC.
Background technology
As everyone knows, video monitoring is the important component part of safety and protection system, traditional video monitoring system roughly have following three kinds: one, analog video supervisory control system.The development of analog video supervisory control system comparatively early, is often called first generation supervisory control system at present.System features: the collection of video, audio signal, transmission, storage are analog form, and quality is the highest.Analog video systems Problems existing: be only adapted to less geographic range; Cannot swap data with information system; Monitoring is only limitted to Surveillance center, and the flexibility of application is poor; Not easily expand.Two, based on the multimedia monitoring of microcomputer platform.Multimedia monitor system with high performance multimedia industrial computer for core, adopt modular construction, by integrated for the armamentarium of main control end with one, in addition, this system also has friendly human-computer interaction interface and network multistage sub-control ability, every one-level has the function of self-management and control, and can by the control of upper level.DVR is the core product of second generation multimedia monitor system, adopt microcomputer and windows platform, in a computer video compression card and corresponding DVR software are installed, different model video card can connect 1/2/4 road video, support real-time video and audio frequency, be that the upgrading of first generation analog video supervisory control system realizes digitized possibility, be applicable to the improvement of conventional monitoring systems, be not suitable for newly-built supervisory control system, again the system of realistic existing remote video transmission (more than 1-2 kilometer).Multimedia monitor system feature: collection, the storage of video, audio signal are mainly digital form, and quality is higher; Systemic-function is comparatively powerful, perfect; Can swap data with information system; The flexibility of application is better.Multimedia monitor system shortcoming: DVR system is analog form transmission from control point to Surveillance center, similar to first generation system exist many defects, realize long-distance video transmission to need to lay (renting) optical cable, at optical cable two ends, video optical multiplexer equipment is installed, system Construction cost is high, not easy care and maintenance cost is larger.Three, based on the network digital video monitoring of embedded network video server/codec.Network digital monitoring is exactly that traditional analog video signal is converted to digital signal, is transmitted, processed by intelligentized computer software by computer network.System, by traditional video, audio frequency and control signal digitlization, with the form of IP bag in transmission over networks, achieves the intellectuality of the digitlization of video/audio, the networking of system, the multimedization of application and management.Compared with network digital video system and above-mentioned first and second system, there is obvious advantage: utilize existing Internet resources, do not need, for newly-built supervisory control system lays optical cable, increase equipment, to realize monitoring remote video easily in generation; System extension ability is strong, as long as have increase control point, the place equipment of network with regard to the new control point of easily extensible; Maintenance cost is low, and network operation has network provider to safeguard, headend equipment is plug and play, maintenance-free system; Systemic-function is powerful, utilization is flexible, total digitalization video recording is convenient to preserve and retrieval; Each computer in a network, as long as installed the software of client, giving corresponding authority just can become monitor workstation.But the research of current intelligent residential district mainly concentrates in the entirety control of commercial mansion and office block, and it is very few to control research to the indoor intelligent of single-apartment, so the research of indoor intelligent supervisory control system is of great immediate significance and very large research space.On the other hand, along with economic growth and social progress, people live to modernization and the environment of office proposes requirements at the higher level.In view of intelligent video monitoring system is with a wide range of applications, more satisfactory solution is exactly in indoor location video monitoring system, carries out Real-time Feedback, can notify related personnel in time once meet accident, reach real-time safety monitoring to the situation of indoor.Therefore, a kind of convenience, efficiently indoor intelligent video monitoring system the development of indoor security monitoring need be agreed with.
Summary of the invention
The object of the invention is to, by a kind of indoor intelligent video monitoring system based on SOPC, solve the problem that above background technology part is mentioned.
For reaching this object, the present invention by the following technical solutions:
Based on an indoor intelligent video monitoring system of SOPC, it comprises CCD camera, The Cloud Terrace, stepping motor, motor-drive circuit, transducer group, Nios II soft-core processor combine with Cyclone II master controller, VGA display module, alarm module and terminal; Wherein, described master controller comprises video a/d chip, Image Coding space conversion module, VGA control module, SRAM memory, image pre-processing module, Nios II soft-core processor; Described CCD camera is arranged on The Cloud Terrace, and electrical connection master controller, for by ccd sensor Real-time Collection video image, exports to video a/d chip; The TSC-system formula composite video signal that described video a/d chip is used for CCD camera exports is decoded as digital signal, exports to Image Coding space conversion module; Described Image Coding space conversion module is used for, by Video decoding module, described digital signal is converted to YCrCb signal, by space conversion module, described YCrCb signal is converted to rgb signal; VGA control module is exported on one tunnel of described rgb signal, and VGA control module exports to VGA display module after carrying out DA conversion to rgb signal; Another road of rgb signal is stored in SRAM memory, and supply image pre-processing module and Nios II soft-core processor read and be for further processing; Described image pre-processing module is used for reading rgb signal from SRAM memory, binary image is treated to through Scicos-HDL, use fractional order differential mask to carry out image enhaucament for fuzzy edge, be supplied to Nios II soft-core processor and take exercises object detecting and tracking; Described Nios II soft-core processor is used for the background image data deposited in the image after image pre-processing module process and SRAM memory to use calculus of finite differences to process, obtain image difference information, and carry out contours extract accordingly, calculate maximum image outline information and be defined as tracing object, according to the coordinate control motor-drive circuit of tracing object, motor-drive circuit Driving Stepping Motor moves, stepping motor drives cloud platform rotation, CCD camera moves with tracing object, thus completes the detection and tracking of operational objective; Described transducer group is used for the ambient parameter information of Real-Time Monitoring indoor, and export to NiosII soft-core processor, the information that monitor data, transducer group detect is exported to terminal by communication module by Nios II soft-core processor; Described alarm module is used for when receiving master controller and sending the data exception of transducer group, produces sound and light alarm, and when finding moving target, indicator light glimmers, and has informed abnormal conditions.
Especially, establishment and the configuration using SOPC Builder of described Nios II soft-core processor and peripheral hardware thereof complete, and are customized to SOPC assembly; To programme with C Plus Plus under Nios II Integrated Development Environment organic cooperation of each inter-module, realized intelligent monitoring function.
Especially, described video a/d chip selects TV Decoder 7181 chip, and the Video decoding module in described Image Coding space conversion module selects hardware module ITU656, and space conversion module selects YCrCbto RGB module.
Especially, described motor-drive circuit selects L298N driving chip, is added with light-coupled isolation between motor-drive circuit and stepping motor, adopts PWM mode control step motor.
Especially, described transducer group includes but not limited to temperature sensor, humidity sensor, Smoke Sensor and infrared thermal releasing transducer.
The indoor intelligent video monitoring system based on SOPC that the present invention proposes is the video frequency object tracking, the alarm platform that combine based on machine vision technique and the sensor technology of SOPC technology, can report to the police, and warning message is sent to long-distance user according to temperature, humidity, smog, personnel activity's set point.Hardware and software upgrading of the present invention is convenient, according to customization, can complete satisfactory supervisory control system at short notice; Support RMON, be conveniently applied to the indoor scenarios such as household, market, library.
Accompanying drawing explanation
The indoor intelligent video monitoring system schematic diagram based on SOPC that Fig. 1 provides for the embodiment of the present invention;
The moving object segmentation that Fig. 2 provides for the embodiment of the present invention and trace flow figure;
The jpeg image compression process figure based on DCT that Fig. 3 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content, unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.Term used herein, just in order to describe specific embodiment, is not intended to be restriction the present invention.
Please refer to shown in Fig. 1, the indoor intelligent video monitoring system schematic diagram based on SOPC that Fig. 1 provides for the embodiment of the present invention.
Specifically comprise CCD camera based on the indoor intelligent video monitoring system of SOPC in the present embodiment, master controller, VGA display module, alarm module and terminal that The Cloud Terrace, stepping motor, motor-drive circuit, transducer group, Nios II soft-core processor combine with Cyclone II.Described master controller comprises video a/d chip, Image Coding space conversion module, VGA control module, SRAM memory, image pre-processing module, Nios II soft-core processor.Wherein, the Cyclone II family device of Altera, its capacity has 4608 ~ 68416 logical blocks, also there is new enhancing characteristic, comprise the embedding memory of nearly 1.1Mbit, nearly 150 embedding 18*18 multipliers, phase-locked loop, support external memory interfaces and difference and single-ended I/O standard.Its core is Cyclone II 2C35FPGA chip, also comprises memory, network interface and serial ports etc.Expansion board has abundant user interface, except conventional input/output interface, also for analog audio-video devises AV, VGA and audio input output interface, for digital video and wireless application add ASI, A/D and D/A interface.Establishment and the configuration using SOPC Builder of Nios II soft-core processor and peripheral hardware thereof complete, and are customized to SOPC assembly; To programme with C Plus Plus under Nios II Integrated Development Environment organic cooperation of each inter-module, realized intelligent monitoring function.
Described CCD camera is arranged on The Cloud Terrace, and electrical connection master controller, for by ccd sensor Real-time Collection video image, exports to video a/d chip.
The TSC-system formula composite video signal that described video a/d chip is used for CCD camera exports is decoded as digital signal, exports to Image Coding space conversion module.Described Image Coding space conversion module is used for, by Video decoding module, described digital signal is converted to YCrCb signal, by space conversion module, described YCrCb signal is converted to rgb signal.
Described video a/d chip selects TV Decoder 7181 chip in the present embodiment, and the Video decoding module in described Image Coding space conversion module selects hardware module ITU656, and space conversion module selects YCrCb to RGB module.CCD camera exports as TSC-system formula composite video signal, and resolution is 640*480.TSC-system formula composite video signal directly can not carry out data processing and storage, so must first decode to it and a series of process such as color space conversion.At this, the analog video signal collected is decoded as digital signal by TVDecoder 7181 chip, YCrCb signal is converted to again by hardware module ITU656, be converted into rgb signal by YCrCb to RGB module again, so far complete IMAQ and Image Coding and space transforming.Wherein, the digital of digital video data that TV Decoder 7181 chip exports is transferred to FPGA by 8 BITBUS network TD-DATA [7:0], and FPGA identifies valid data through Video decoding module in video data.The data of the ITU656 form of TV Decoder 7181 core outputting standard, Y:U:V=4:2:2, resolution is 720 ~ 576, and output pixel clock is the form of 27MHz, a line video data.
VGA control module is exported on one tunnel of described rgb signal, and VGA control module exports to VGA display module after carrying out DA conversion to rgb signal; Another road of rgb signal is stored in SRAM memory, and supply image pre-processing module and Nios II soft-core processor read and be for further processing.Image transmitting adopts full duplex communication.
The VGA output interface chip of VGA control module adopts the ADV7123 of AD company to complete the DA conversion of rgb video signal.The rgb signal exported, through Video coding, is shown on VGA display module by DAC904, shows the image collected in real time, is convenient to adopt computer display terminal technology; Reduce cost, improve reliability.
Image can introduce some other information interfering picture in transmission or processing procedure, image is thickened, thus reduces the quality of image, even flood the feature of image, bring difficulty to analysis, therefore will carry out preliminary treatment to the image collected, image is strengthened.Described image pre-processing module reads rgb signal from SRAM memory, binary image is treated to through Scicos-HDL, use fractional order differential mask to carry out image enhaucament for fuzzy edge, be supplied to Nios II soft-core processor and take exercises object detecting and tracking.Below Scicos-HDL is briefly introduced: Scicos-HDL is the software Scicos-HDL (2005-2010) carrying out hardware circuit algorithm design and emulation on the computational science software of increasing income.The research of this project always in Institute of Automation, CAS method laboratory and French INRIA support under carry out.Current Scicos-HDL 0.7 operates in windows platform, possesses 5 hardware circuit simulated library, comprises more than 50 hardware circuit emulation element and VHDL, verilog, systemC CompilerTools module.Currently can complete combinatory logic circuit design, Design of Sequential Logic Circuit Based and basic Digital Signal Processing, support VHDL, verilog, SystemC 3 kinds of hardware description languages, support that automatic document generates, and the HDL code generated be can be comprehensive.Scicos-HDL also support to increase income with other eda software of (Open Source) carries out integrated, builds complete design tool chain.User carries out senior description to electronic circuit under Scilab/Scicos environment, and can carry out system emulation and correction to the design of oneself, then generates the structural rtl model based on VHDL by compiling.
Described Nios II soft-core processor is used for the background image data deposited in the image after image pre-processing module process and SRAM memory to use calculus of finite differences to process, obtain image difference information, and carry out contours extract accordingly, calculate maximum image outline information and be defined as tracing object, according to the coordinate control motor-drive circuit of tracing object, motor-drive circuit Driving Stepping Motor moves, stepping motor drives cloud platform rotation, CCD camera moves with tracing object, thus completes the detection and tracking of operational objective.The idiographic flow of moving object segmentation and tracking as shown in Figure 2, raw image data is after image pre-processing module process, Nios II soft-core processor does difference to image 1 and image 2 liang of images, on the one hand image 2 is proceeded to image 2, on the other hand after obtaining view data difference, extract image difference partial contour, obtain larger outline data and be defined as following the tracks of outline data, export to step motor control module, start to control The Cloud Terrace and follow the tracks of.Select L298N driving chip in motor-drive circuit described in the present embodiment, between motor-drive circuit and stepping motor, be added with light-coupled isolation, adopt PWM mode control step motor.
Master controller needs to compress video data JPEG in the present invention.JPEG (Joint PhotographicExperts Group, JPEG (joint photographic experts group)) is the digital video compression standard set up by International Standards Organization and Consultative Committee on International Telephone and Telegraph (CCITT), is mainly applicable to static image compression.JPEG compress technique adopts lossy compression method mode discrete cosine transform (DCT) to remove the view data of redundancy, very abundant lively image can be represented while obtaining higher compression ratio, good image quality can be obtained with minimum disk space.And JPEG is one form very flexibly, has the function of adjusting image quality, allow to compress file by different compression factor, support multiple compression level, compression ratio is usually between 10:1 to 40:1.Rudimentary algorithm flow process as shown in Figure 3.In decompression process, first the coefficient of encoded quantification is decoded, then invert and quantize and utilize two-dimensional dct inverse transformation that DCT coefficient is converted into 8 × 8 sampled pixel blocks, finally the block of pixels after inverse transformation is combined into piece image.The effect compressed video is as follows: first to representing that the form of signal is carried out certain and mapped, remove by this mapping or weaken the correlation being present in picture signal inside, reduce the redundancy that its structure exists. secondly meeting under the necessarily required prerequisite of picture quality, reduce the precision representing signal, this realizes by adopting the quantification meeting subjective feel characteristic.Finally utilize statistical coding eliminate finally the statistical redundancy degree that comprises by the symbol of encoding.
Described transducer group is used for the ambient parameter information of Real-Time Monitoring indoor, and export to Nios II soft-core processor, the information that monitor data, transducer group detect is exported to terminal by communication module by Nios II soft-core processor.Temperature sensor, humidity sensor, Smoke Sensor and infrared thermal releasing transducer is included but not limited in the group of transducer described in the present embodiment.Sensor detection module is responsible for the change of each transducer of cycle detection, the currency of record transducer, on the one hand, judges that transducer currency is whether normal, as abnormal, and startup alarm module, and by the environmental parameter of voice broadcast sensors association, give the alarm; On the other hand, sensing data is sent to data transmission module, finally shows at terminal.
Described alarm module is used for when receiving master controller and sending the data exception of transducer group, produces sound and light alarm, and when finding moving target, indicator light glimmers, and has informed abnormal conditions.
For far-end computer terminal demonstration, CCD camera is connected to server by communication bus, then connects display and server by VGA line, the monitored picture of video camera can be shown in real time; Meanwhile, utilize switch device, multiple stage terminal and server are arranged on the same network segment, sharing of native system shooting picture can be realized.The data receiving image and transducer are responsible for by terminal, realize the display of video monitoring and environmental parameter, turning to and speed control parameter of additional camera.Visual Studio 2008 is adopted to carry out host computer exploitation in the present embodiment.
For ease of the understanding to technical solution of the present invention, existing as follows to following several technical term outline: SOPC is the abbreviation of System on Programmable Chip, and Chinese is translated into programmable system on sheet.Terminal: refer to those " mute " subscriber equipmenies be connected with centralized host computer system.Terminal receives input through keyboard from user, and these inputs are sent to host computer system.The input through keyboard of this user of host computer system processes and order, then export and return and be presented on the screen of this terminal.PWM and pulse width modulation are a kind of analog control modes, and it carrys out the biased of modulation transistor base stage or metal-oxide-semiconductor grid according to the change of respective loads, realizes the change of transistor or metal-oxide-semiconductor ON time, thus realize the change that switching power supply exports.This mode can make the output voltage of power supply keep constant when operation conditions change, is the very effective technology of one utilizing the digital signal of microprocessor to control analog circuit.TSC-system formula composite video signal: ntsc television standard 29.97 frames per second, TV surface sweeping line is 525 lines, and even field is front, and strange field is rear, and the digitlization ntsc television standard resolution of standard is 720*486, the color position of 2 bits is dark, and the ratio of width to height of picture is 4:3.Cyclone II family device: the second generation product being Altera low cost Cyclone series, the cost of Cyclone II FPGA is lower than first generation Cyclone device by 30%, and logical capacity is large more than 3 times.Cyclone II device adopts the 90nm low K insulation material technology technology of TSMC empirical tests, is the FPGA that industry cost is minimum.Cyclone II device capacitance has 4608 ~ 68416 logical blocks, also there is new enhancing characteristic, comprise the embedding memory of nearly 1.1Mbit, nearly 150 embedding 18*18 multipliers, phase-locked loop, support external memory interfaces and difference and single-ended I/O standard.
Technical scheme of the present invention is the video frequency object tracking, the alarm platform that combine based on machine vision technique and the sensor technology of SOPC technology, can report to the police, and warning message is sent to long-distance user according to temperature, humidity, smog, personnel activity's set point.Hardware and software upgrading of the present invention is convenient, according to customization, can complete satisfactory supervisory control system at short notice; Support RMON, be conveniently applied to the indoor scenarios such as household, market, library.The present invention in use tool has the following advantages: one, fail safe is high, image mask technology, prevents from illegally distorting Video Document; Only have authorized user just can the system of entering to check, call video data, the management account of different rights can be provided the administrative staff of different identity; Effectively prevent malicious sabotage; Powerful log management function, ensure that the safe handling of dedicated system.Two, service platform framework is convenient, can install client software easily anywhere, only need the login account of distributing user different rights, just can check the image document of front-end camera control point.Three, rights management is the safety ensureing Video Document, and this video monitoring system has operating right management, and strict control of authority is carried out in system management, operation, ensures the fail safe of system.Four, local video recording, preserves the local video monitoring video data in certain hour section, and can inquire about easily, collects evidence, for post-survey provides foundation.Five, can report to the police, and warning message is sent to long-distance user according to temperature, humidity, smog, personnel activity's set point.Six, the upgrading of native system hardware and software is all very convenient, according to customization, can complete satisfactory supervisory control system at short notice; Support RMON, be conveniently applied to the occasions such as household, market, library.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (5)
1. the indoor intelligent video monitoring system based on SOPC, it is characterized in that, comprise CCD camera, master controller, VGA display module, alarm module and terminal that The Cloud Terrace, stepping motor, motor-drive circuit, transducer group, Nios II soft-core processor combine with CycloneII; Wherein, described master controller comprises video a/d chip, Image Coding space conversion module, VGA control module, SRAM memory, image pre-processing module, Nios II soft-core processor; Described CCD camera is arranged on The Cloud Terrace, and electrical connection master controller, for by ccd sensor Real-time Collection video image, exports to video a/d chip; The TSC-system formula composite video signal that described video a/d chip is used for CCD camera exports is decoded as digital signal, exports to Image Coding space conversion module; Described Image Coding space conversion module is used for, by Video decoding module, described digital signal is converted to YCrCb signal, by space conversion module, described YCrCb signal is converted to rgb signal; VGA control module is exported on one tunnel of described rgb signal, and VGA control module exports to VGA display module after carrying out DA conversion to rgb signal; Another road of rgb signal is stored in SRAM memory, and supply image pre-processing module and Nios II soft-core processor read and be for further processing; Described image pre-processing module is used for reading rgb signal from SRAM memory, binary image is treated to through Scicos-HDL, use fractional order differential mask to carry out image enhaucament for fuzzy edge, be supplied to Nios II soft-core processor and take exercises object detecting and tracking; Described Nios II soft-core processor is used for the background image data deposited in the image after image pre-processing module process and SRAM memory to use calculus of finite differences to process, obtain image difference information, and carry out contours extract accordingly, calculate maximum image outline information and be defined as tracing object, according to the coordinate control motor-drive circuit of tracing object, motor-drive circuit Driving Stepping Motor moves, stepping motor drives cloud platform rotation, CCD camera moves with tracing object, thus completes the detection and tracking of operational objective; Described transducer group is used for the ambient parameter information of Real-Time Monitoring indoor, and export to Nios II soft-core processor, the information that monitor data, transducer group detect is exported to terminal by communication module by Nios II soft-core processor; Described alarm module is used for when receiving master controller and sending the data exception of transducer group, produces sound and light alarm, and when finding moving target, indicator light glimmers, and has informed abnormal conditions.
2. the indoor intelligent video monitoring system based on SOPC according to claim 1, is characterized in that, establishment and the configuration using SOPC Builder of described Nios II soft-core processor and peripheral hardware thereof complete, and are customized to SOPC assembly; To programme with C Plus Plus under Nios II Integrated Development Environment organic cooperation of each inter-module, realized intelligent monitoring function.
3. the indoor intelligent video monitoring system based on SOPC according to claim 2, it is characterized in that, described video a/d chip selects TV Decoder 7181 chip, Video decoding module in described Image Coding space conversion module selects hardware module ITU656, and space conversion module selects YCrCb to RGB module.
4. the indoor intelligent video monitoring system based on SOPC according to claim 1, it is characterized in that, described motor-drive circuit selects L298N driving chip, is added with light-coupled isolation between motor-drive circuit and stepping motor, adopts PWM mode control step motor.
5. according to the indoor intelligent video monitoring system based on SOPC one of Claims 1-4 Suo Shu, it is characterized in that, described transducer group includes but not limited to temperature sensor, humidity sensor, Smoke Sensor and infrared thermal releasing transducer.
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| CN106022240B (en) * | 2016-05-12 | 2019-05-03 | 北京理工大学 | Remote sensing CCD initial data desired target area based on SoPC automatically extracts implementation method |
| CN106657346A (en) * | 2016-12-28 | 2017-05-10 | 北京星云互连科技有限公司 | Motherboard and motherboard data transmission processing method |
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| CN107249037A (en) * | 2017-07-02 | 2017-10-13 | 东华大学 | A kind of mobile communication Monitor Equipment of controllable head |
| CN107370909A (en) * | 2017-07-11 | 2017-11-21 | 中国重型机械研究院股份公司 | A kind of plate straightening roll autocontrol method based on machine vision technique |
| CN107607088A (en) * | 2017-09-22 | 2018-01-19 | 南京理工大学 | A kind of apparatus and method of infrared motion target detection and its three-dimensional information superposition |
| CN108833828A (en) * | 2018-06-01 | 2018-11-16 | 安徽师范大学 | A kind of binocular cradle head camera video monitoring system and method based on FPGA |
| CN109040550A (en) * | 2018-08-13 | 2018-12-18 | 南京邮电大学 | Video frequency monitoring system based on SOPC |
| CN115311824A (en) * | 2022-07-05 | 2022-11-08 | 南京邮电大学 | Campus security management system and method based on Internet |
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