CN104754293A - Mixed monitoring system of digital HD video and analog HD video and construction method - Google Patents
Mixed monitoring system of digital HD video and analog HD video and construction method Download PDFInfo
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- CN104754293A CN104754293A CN201310756119.7A CN201310756119A CN104754293A CN 104754293 A CN104754293 A CN 104754293A CN 201310756119 A CN201310756119 A CN 201310756119A CN 104754293 A CN104754293 A CN 104754293A
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Abstract
The invention creatively provides a mixed monitoring system of a digital HD video and an analog HD video and a construction method. The system is a digital HD video fiber monitoring system or digital HD/ analog SD mixed video fiber monitoring system which is smooth updated from the existing analog SD video fiber monitoring system. With the adoption of the mixed monitoring system, optical fibers are not needed to be arranged again, an optical transmission device is not needed to be replaced; a camera holder is not needed to be replaced, and a camera detector can be simply replaced; the system has the characteristics of minimizing the construction load, and minimizing the reconstruction and updating cost.
Description
Technical field
What the invention related to video optical fiber monitoring field, particularly digital high-definition video and simulation SD video mixes supervisory control system and construction method.
Background technology
At present, video monitoring is from the stage that simulation SD is rapidly changed to digital high-definition, and market is huge, and growth rate is surprising.But in current all system schemas, digital high-definition video monitoring and simulation SD video monitoring nearly all cannot merge.Especially in the field of remote optical transport, because supervisory control system requires real-time and reliability, traditional analog SD video optical fiber monitoring has mainly been come by digital video fiber optic transmitter.
In digital high-definition video optical fiber monitoring field, Present Domestic mainly all-IP HD video optical fiber monitoring system accounts for main flow, promoting SDI mode HD video optical fiber monitoring system abroad simultaneously, but these two kinds of modes all cannot the compatible traditional analog SD video optical fiber supervisory control system using digital video fiber optic transmitter, replacing or the necessary extensive construction of upgrading.
If upgrade to high-definition video monitoring, must whole system be upgraded, need the construction problem in the face of staggering amount.Simultaneously due to current digital high-definition video monitoring and analogue system incompatible, even only need several high-definition monitoring point on whole circuit, also all must change all devices, expense is high.
Summary of the invention
What the invention provided a kind of digital high-definition video and simulation SD video mixes supervisory control system and implementation method, overcome high-definition digital video optical fiber monitoring system and conventional analog video optical fiber monitoring system in existing monitoring technique separate, cannot mixed networking, cause existing analog video optical fiber monitoring system upgrade rebuilding construction amount large, the problem that cost is high.
For solving the problems of the technologies described above, the technical scheme that the invention adopts is: the technical scheme that the invention adopts is: digital high-definition video mixes supervisory control system with simulation SD video, comprises simulation SD video optical fiber supervisory control system; The IP signal of digital high-definition video acquisition device collection obtains class CVBS signal through the process of IP to class CVBS signal converter, and such CVBS signal is uploaded to standard-definition digital video optical transmitter and receiver transmitter by IP to class CVBS signal converter; Class CVBS signal after the transmission process of standard-definition digital video optical transmitter and receiver transmitter is to standard-definition digital video optical transmitter and receiver receiver; Class CVBS signal after standard-definition digital video optical transmitter and receiver receiver output processing is to class CVBS to IP signal converter; Class CVBS to IP signal converter exports IP signal and transfers to VMS server storage through NVR, and in monitoring display screen display.
Further, described IP to class CVBS signal converter comprises transducer input interface, the first Ethernet physical interface receiving-transmitting device, the first fpga chip, analog-digital converter and high-speed-differential amplifier; Described first fpga chip comprises the first Ethernet media access controller, forward error correction coding module, interweaving encoding module, modulation circuit and Direct Digital Synthesizer; The IP Signal transmissions of reception is given the first fpga chip by described first Ethernet physical interface receiving-transmitting device; First Ethernet media access controller sends to forward error correction coding module to after this IP signal decompression; Signal after process is sent to interweaving encoding resume module by forward error correction coding module; Signal after interweaving encoding resume module is sent to analog-digital converter after the modulation of modulation circuit and Direct Digital Synthesizer; The output of analog-digital converter is connected with the input of high-speed-differential amplifier; The output of high-speed-differential amplifier switches through parallel operation output interface.
Further, class CVBS to IP signal converter comprises switch input, variable gain amplifier, digital analog converter, the second fpga chip, the second Ethernet physical interface receiving-transmitting device and converter output end; Described second fpga chip comprises digital mixing/detection demodulator circuit, trellis decoded module, decoding FEC module and the second Ethernet media access controller; Variable gain amplifier receives class CVBS signal; Class CVBS signal after variable gain amplifier process is converted to digital signal and sends the second fpga chip to by digital analog converter; The digital signal of reception is reverted to baseband signal by digital mixing/detection demodulator circuit; Baseband signal inputs decoding FEC module after trellis decoded resume module; Baseband signal inputs the second Ethernet media access controller and recovers IP address after decoding FEC resume module, and forms ethernet mac frame and export the second Ethernet physical interface receiving-transmitting device to; The output of the second Ethernet physical interface receiving-transmitting device connects converter output end.
Further, digital high-definition video acquisition device is digital high-definition camera.
Set up this digital high-definition video and the construction method mixing supervisory control system of simulation SD video, it is characterized in that: comprise the steps:
1.. grand master pattern is intended SD camera part and be replaced by digital high-definition camera, original The Cloud Terrace can be retained;
2.. connect the input of IP to class CVBS signal converter at digital high-definition camera output, more original coaxial cable is connected to the output of IP to class CVBS signal converter;
3.. the output of the corresponding high definition IP video camera of digital video fiber optic transmitter receiving terminal is connected to the input of class CVBS to IP signal converter; Again ethernet line is connected the output of class CVBS to IP signal converter;
4.. the equipment for after-treatment of the other end access digital high-definition supervisory control system of ethernet line.
The advantage that the invention has and good effect are: the technical scheme adopting the invention, merge high-definition digital video optical fiber monitoring system and conventional analog video optical fiber monitoring system, digital high-definition video optical fiber supervisory control system or digital high-definition/simulation SD mixed video optical fiber monitoring system is upgraded to smoothly based on existing simulation SD video optical fiber supervisory control system, this type of mixing supervisory control system does not need laying optical fiber again, do not need to change optical transmission device, do not need to change camera pan-tilt, only camera probe need be changed, there is construction volume minimize, the feature of transformation and upgrade cost minimumization.Set out according to the on-the-spot actual demand of user, significantly reduce construction volume, simplify Installation and Debugging work, user can be upgraded oneself system flexibly, be upgraded to digital high-definition video optical fiber supervisory control system by existing simulation SD video optical fiber supervisory control system at low cost, step by step, smoothly.
Accompanying drawing explanation
Fig. 1 be the invention digital high-definition video with simulation SD video mix supervisory control system schematic diagram;
Fig. 2 is IP to class CVBS signal converter theory diagram in the invention;
Fig. 3 is class CVBS to IP signal converter theory diagram in the invention;
Fig. 4 is for the digital high-definition camera structural representation with simulation SD video optical fiber monitoring mixed networking in the invention.
In figure:
1. a RJ45 connector 2. first Ethernet physics connects 3. first fpga chips
Mouth receiving-transmitting device
4. analog-digital converter 5. high-speed-differential amplifier 6. first BNC connector
7. the second BNC connector 8. variable gain amplifier 9. digital analog converter
10. the second Ethernet physics connects 11. second fpga chip 12. the 2nd RJ45 connectors
Mouth receiving-transmitting device
13. camera lens 14. imageing sensor 15. image processors
16. memory 17.FPGA module 18. the 2nd D A transducers
19. amplifiers 20. the 3rd BNC connector
Embodiment
With embodiment, the invention is elaborated by reference to the accompanying drawings.
Digital high-definition video mixes supervisory control system with simulation SD video, comprises simulation SD video optical fiber supervisory control system; The IP signal of digital high-definition video acquisition device collection obtains class CVBS signal through the process of IP to class CVBS signal converter, and such CVBS signal is uploaded to standard-definition digital video optical transmitter and receiver transmitter by IP to class CVBS signal converter; Standard-definition digital video optical transmitter and receiver transmitter transmission class CVBS signal is after treatment to standard-definition digital video optical transmitter and receiver receiver; Class CVBS signal after standard-definition digital video optical transmitter and receiver receiver output processing is to class CVBS to IP signal converter; Class CVBS to IP signal converter exports IP signal and transfers to VMS server storage through NVR, and in monitoring display screen display.IP to class CVBS signal converter comprises RJ45 connector 1, first Ethernet physical interface receiving-transmitting device 2, first fpga chip 3, analog-digital converter 4 and high-speed-differential amplifier 5; Described first fpga chip 3 comprises the first Ethernet media access controller, forward error correction coding module, interweaving encoding module, modulation circuit and Direct Digital Synthesizer; The IP Signal transmissions of reception is given the first fpga chip 3 by described first Ethernet physical interface receiving-transmitting device 2; First Ethernet media access controller sends to forward error correction coding module to after this IP signal decompression; Signal after process is sent to interweaving encoding resume module by forward error correction coding module; Signal after interweaving encoding resume module is sent to analog-digital converter 4 after the modulation of modulation circuit and Direct Digital Synthesizer; The output of analog-digital converter 4 is connected with the input of high-speed-differential amplifier 5; First BNC connector 6 of output termination IP to the class CVBS signal converter of high-speed-differential amplifier 5.Class CVBS to IP signal converter comprises the second BNC connector 7 of transducer, variable gain amplifier 8, digital analog converter 9, second fpga chip 11, second Ethernet physical interface receiving-transmitting device 10 and the 2nd RJ45 connector 12; Described second fpga chip 11 comprises digital mixing/detection demodulator circuit, trellis decoded module, decoding FEC module and the second Ethernet media access controller; Variable gain amplifier 8 receives class CVBS signal; Class CVBS signal after variable gain amplifier 8 processes by digital analog converter 9 is converted to digital signal and sends the second fpga chip 11 to; The digital signal of reception is reverted to baseband signal by digital mixing/detection demodulator circuit; Baseband signal inputs decoding FEC module after trellis decoded resume module; Baseband signal inputs the second Ethernet media access controller and recovers IP address after decoding FEC resume module, and forms ethernet mac frame and export the second Ethernet physical interface receiving-transmitting device 10 to; Output the 2nd RJ45 connector 12 of the second Ethernet physical interface receiving-transmitting device 10.Digital high-definition video acquisition device is digital high-definition camera.
As shown in Figure 1, the invention is and simulates the digital high-definition video of SD video optical fiber Design of Monitoring and Control System and the mixed networking optical fiber monitoring system of simulation SD video for upgrading.This figure Jin Yi tetra-tunnel supervisory control system is example, and in fact 1 to 64 tunnel all can realize.4th simulation SD video camera is replaced by a digital high-definition IP video camera, digital high-definition IP needs connection key equipment after video camera--IP to CVBS signal converter, the IP signal that digital high-definition camera exports is converted to " CVBS " signal that coaxial cable can transmit, is connected to digital video fiber optic transmitter transmitter through original coax line; At receiving terminal, digital video fiber optic transmitter receiver by corresponding video channel via key equipment--class CVBS to IP signal converter connects ethernet line, and with NVR, the digital high-definition IP monitor subsequent treatment facility such as VMS server connects; Original other roads simulation SD video camera still keeps original connected mode, coaxial cable, digital video fiber optic transmitter transmitter, optical fiber, digital video fiber optic transmitter receiver, analog matrix, DVR; Video wall is shared device.
Traditional analog SD video uses CVBS composite video signal image signal transmission, and signal bandwidth is 6MHz.First, video camera exports CVBS composite video signal to digital video fiber optic transmitter transmitter, and digital video fiber optic transmitter transmitter front ends ADC uses 12MHz ~ 16MHz frequency to sample to CVBS signal, converts digital signal to, again through compound, be sent on optical fiber by laser after coding; At receiving terminal, digital video fiber optic transmitter receiver receives digital signal from optical fiber, then is reduced to the CVBS signal also corresponding output on each road by DAC.
Embodiment 1: as shown in Figure 2, digital high-definition IP video camera exports as IP signal, the general maximum support resolution 1920x1080/60 frame format HD video of high-definition camera, IP form is packaged into after compression, data transfer rate is generally 2Mbps ~ 40Mbps, cannot directly by digital video fiber optic transmitter below because bandwidth is too high and signal format is not mated; Need to be incorporated into the first Ethernet physical interface receiving-transmitting device 2 by a RJ45 connector 1 of IP to class CVBS signal converter, after changing digital signal into, then be sent in the first fpga chip 3; The first Ethernet media access controller in first fpga chip 3 recovers complete IP packet, content is repacked, be sent in forward error correction coding module, forward error correction coding module carries out forward error correction coding operation, then interweaving encoding module is sent to, signal after interweaving encoding resume module is sent in modulation circuit and Direct Digital Synthesizer and adjusts, signal after adjustment is sent to analog-digital converter 4, draw out the signal waveform of " class CVBS ", ensure that bandwidth range is within 6MHz.This signal utilizes the first BNC connector 6 to be connected with coaxial cable again after high-speed-differential amplifier 5 amplifies.Digital video fiber optic transmitter transmitter is connected to through original coax line, then through Fiber connection to digital video fiber optic transmitter receiver.As shown in Figure 3, digital video fiber optic transmitter receiver exports " class CVBS " signal on coax and is incorporated into variable gain amplifier 8 by the second BNC connector 7 of class CVBS to IP signal converter, be input to after treatment in digital analog converter 9 and change digital signal into, transfer the signal to the in the second fpga chip 11; First signal reverts to baseband signal by digital mixing/detection demodulator circuit in the second fpga chip 11, then trellis decoded module and forward error correction block is utilized to recover at the error code by occurring during circuit, finally input the second Ethernet media access controller and recover IP address, and form ethernet mac frame, the second Ethernet physical interface receiving-transmitting device 10 is outputted to from the second fpga chip 11, finally be connected on ethernet line by the 2nd RJ45 connector 12 again, with NVR, the digital high-definition IP monitor subsequent treatment facilities such as VMS server connect.Original other roads simulation SD video camera still keeps original connected mode, coaxial cable, digital video fiber optic transmitter transmitter, optical fiber, digital video fiber optic transmitter receiver, analog matrix, DVR; Video wall is shared device, thus realizes the digital high-definition video of supervisory control system and the mixed networking of simulation SD video.
As shown in Figure 4, the another kind of specific embodiment of the invention is: IP to class CVBS signal converter is integrated in digital high-definition IP video camera as functional module, this new digital high-definition IP video camera is made up of shell, camera lens 13, imageing sensor 14, image processor 15, FPGA module 17 and memory 16, electrical connection graph image-position sensor 14, FPGA module 17 and memory 16 on described image processor 15, camera lens is electrically connected with imageing sensor 14, wherein imageing sensor 14 preferably CMOS/CCD imageing sensor, memory 16 is DRAM memory;
Described FPGA module 17 comprises mixed-media network modules mixed-media, encoder and modulation module, described encoder connects modulation module, modulation module is electrically connected the 3rd BNC connector 20 by the 2nd D A transducer 18 and amplifier 19, described 3rd BNC connector 20 is coaxial cable interface, can by coaxial cable and digital video fiber optic transmitter electrical connection;
Described mixed-media network modules mixed-media comprises ethernet mac BACK circuit and ethernet mac circuit, and ethernet mac circuit connection standard RJ45 connector, directly can send signal to internet; Encoder comprises FEC forward error correction coding circuit and connected interweaving encoding circuit; Modulation module is AM and DDS modulation circuit; Described MAC BACK circuit electrical connection FEC forward error correction coding circuit.
Other structures are identical with embodiment 1.
Set up digital high-definition video and the construction method mixing supervisory control system of simulation SD video, it is characterized in that: comprise the steps:
1.. grand master pattern is intended SD camera part and be replaced by digital high-definition camera, original The Cloud Terrace can be retained;
2.. connect the input of IP to class CVBS signal converter at digital high-definition camera output, more original coaxial cable is connected to the output of IP to class CVBS signal converter;
3.. the output of the corresponding high definition IP video camera of digital video fiber optic transmitter receiving terminal is connected to the input of CVBS to IP signal converter; Again ethernet line is connected the output of CVBS to IP signal converter;
4.. the equipment for after-treatment of the other end access digital high-definition supervisory control system of ethernet line.
Above the embodiment of the invention has been described in detail, but described content being only the preferred embodiment of the invention, the practical range for limiting the invention can not being considered to.All equalizations done according to the invention scope change and improve, and all should still belong within this patent covering scope.
Claims (5)
1. digital high-definition video and simulation SD video mix supervisory control system, comprise simulation SD video optical fiber supervisory control system; It is characterized in that: the IP signal of digital high-definition video acquisition device collection obtains class CVBS signal through the process of IP to class CVBS signal converter, and such CVBS signal is uploaded to standard-definition digital video optical transmitter and receiver transmitter by IP to class CVBS signal converter; Class CVBS signal after the transmission process of standard-definition digital video optical transmitter and receiver transmitter is to standard-definition digital video optical transmitter and receiver receiver; Class CVBS signal after standard-definition digital video optical transmitter and receiver receiver output processing is to class CVBS to IP signal converter; Class CVBS to IP signal converter exports IP signal and transfers to VMS server storage through NVR, and in monitoring display screen display.
2. digital high-definition video according to claim 1 and simulation SD video mix supervisory control system, it is characterized in that: described IP to class CVBS signal converter comprises transducer input interface, the first Ethernet physical interface receiving-transmitting device, the first fpga chip, analog-digital converter and high-speed-differential amplifier; Described first fpga chip comprises the first Ethernet media access controller, forward error correction coding module, interweaving encoding module, modulation circuit and Direct Digital Synthesizer; The IP Signal transmissions of reception is given the first fpga chip by described first Ethernet physical interface receiving-transmitting device; First Ethernet media access controller sends to forward error correction coding module to after this IP signal decompression; Signal after process is sent to interweaving encoding resume module by forward error correction coding module; Signal after interweaving encoding resume module is sent to analog-digital converter after the modulation of modulation circuit and Direct Digital Synthesizer; The output of analog-digital converter is connected with the input of high-speed-differential amplifier; The output of high-speed-differential amplifier switches through parallel operation output interface.
3. digital high-definition video according to claim 1 and 2 and simulation SD video mix supervisory control system, it is characterized in that: class CVBS to IP signal converter comprises switch input, variable gain amplifier, digital analog converter, the second fpga chip, the second Ethernet physical interface receiving-transmitting device and converter output end; Described second fpga chip comprises digital mixing/detection demodulator circuit, trellis decoded module, decoding FEC module and the second Ethernet media access controller; Variable gain amplifier receives class CVBS signal; Class CVBS signal after variable gain amplifier process is converted to digital signal and sends the second fpga chip to by digital analog converter; The digital signal of reception is reverted to baseband signal by digital mixing/detection demodulator circuit; Baseband signal inputs decoding FEC module after trellis decoded resume module; Baseband signal inputs the second Ethernet media access controller and recovers IP address after decoding FEC resume module, and forms ethernet mac frame and export the second Ethernet physical interface receiving-transmitting device to; The output of the second Ethernet physical interface receiving-transmitting device connects converter output end.
4. digital high-definition video according to claim 3 and simulation SD video mix supervisory control system, it is characterized in that: digital high-definition video acquisition device is digital high-definition camera.
5. set up the digital high-definition video according to any one of claim 1-4 and the construction method mixing supervisory control system of simulation SD video, it is characterized in that: comprise the steps:
1.. grand master pattern is intended SD camera part and be replaced by digital high-definition camera, original The Cloud Terrace can be retained;
2.. connect the input of IP to class CVBS signal converter at digital high-definition camera output, more original coaxial cable is connected to the output of IP to class CVBS signal converter;
3.. the output of the corresponding high definition IP video camera of digital video fiber optic transmitter receiving terminal is connected to the input of class CVBS to IP signal converter; Again ethernet line is connected the output of class CVBS to IP signal converter;
4.. the equipment for after-treatment of the other end access digital high-definition supervisory control system of ethernet line.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209245A (en) * | 2016-08-30 | 2016-12-07 | 烟台正维科技有限公司 | The serial communication network system connected based on optical fiber and 485 odd evens and method |
| CN106966249A (en) * | 2017-06-01 | 2017-07-21 | 深圳金三立视频科技股份有限公司 | Elevator monitoring system |
| CN111711786A (en) * | 2020-05-20 | 2020-09-25 | 北京捷信安通科技有限公司 | Real-time auxiliary driving and operating system for large road maintenance machinery |
-
2013
- 2013-12-31 CN CN201310756119.7A patent/CN104754293A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209245A (en) * | 2016-08-30 | 2016-12-07 | 烟台正维科技有限公司 | The serial communication network system connected based on optical fiber and 485 odd evens and method |
| CN106209245B (en) * | 2016-08-30 | 2018-10-12 | 烟台市正维通信技术有限公司 | The serial communication network system and method connected based on optical fiber and 485 odd evens |
| CN106966249A (en) * | 2017-06-01 | 2017-07-21 | 深圳金三立视频科技股份有限公司 | Elevator monitoring system |
| CN111711786A (en) * | 2020-05-20 | 2020-09-25 | 北京捷信安通科技有限公司 | Real-time auxiliary driving and operating system for large road maintenance machinery |
| CN111711786B (en) * | 2020-05-20 | 2022-08-23 | 北京捷信安通科技有限公司 | Real-time auxiliary driving and operating system for large road maintenance machinery |
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Application publication date: 20150701 |