CN107124599A - A kind of digital video fiber optic transmitter and digital video fiber optic transmitter detection method - Google Patents
A kind of digital video fiber optic transmitter and digital video fiber optic transmitter detection method Download PDFInfo
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- CN107124599A CN107124599A CN201710410589.6A CN201710410589A CN107124599A CN 107124599 A CN107124599 A CN 107124599A CN 201710410589 A CN201710410589 A CN 201710410589A CN 107124599 A CN107124599 A CN 107124599A
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- video
- digital video
- fiber optic
- luminous power
- signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
Abstract
The invention discloses a kind of digital video fiber optic transmitter and digital video fiber optic transmitter detection method, the digital video fiber optic transmitter includes light end emitter, light end receiver, fault detection module, warning module；Fault detection module includes communication check module, physical link detection module, maximum link detection module.The digital video fiber optic transmitter detection method comprises the following steps：Analog video signal is converted to Laser emission to optical fiber；Receive laser and be converted into analog video signal；Communication check module detect between adjacent optical transmitter and receiver whether proper communication；Physical link detection module obtains physical link loss；Maximum link detection module obtains the maximum link loss of optical fiber link.The digital video fiber optic transmitter of the present invention is simple in construction, and cost is relatively low, monitoring communication in real time, link load, operating condition, and fault message can be detected in time, maintenance cost has been saved.
Description
Technical field
The present invention relates to technical field of optical fiber communication, more particularly to a kind of digital video fiber optic transmitter and digital video fiber optic transmitter
Detection method.
Background technology
Video optical multiplexer is for realizing the terminal device that one to multiple road analog video signal is transmitted in a fiber, video light
Terminal can also be divided into transmitting terminal and receiving terminal.Traditional video optical multiplexer is generally simulation optical transmitter and receiver, employs pulse frequency modulated
Technology real-time Transmission picture signal.Transmitting terminal is by after the advanced horizontal pulse frequency modulation(PFM) of analog video signal, then carries out electro-optic conversion,
Optical signal is passed to after receiving terminal, carries out opto-electronic conversion, then carries out pulse frequency demodulation, recovers vision signal.Analog video light
Terminal has the advantages that the transmitted in both directions that image and data-signal can be realized on an optical fiber, but its defect is also ten clearly demarcated
It is aobvious, including：1. scheduling and planning is more difficult；2. simple optical fiber realizes that multiway images transmission is more difficult, it can only typically accomplish single
Four road images are transmitted on optical fiber；3. poor anti jamming capability, larger by such environmental effects, there is temperature drift phenomenon；4. used
Analog-modulated demodulation techniques stability it is not high enough, with the increase or the change of environmental characteristics of use time, its performance can be sent out
Changing, to engineering using bring some inconvenience.
Existing analog video optical transmitter and receiver and digital video fiber optic transmitter using or maintenance process in once there is any ask
Topic, can cause communicating interrupt, it is necessary to professional and technical personnel detects maintenance at the scene using professional test equipment, have impact on video light
The use of terminal, maintenance process is cumbersome, and maintenance cost is higher.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of digital video fiber optic transmitter and digital video fiber optic transmitter detection side
Method, the digital video fiber optic transmitter is simple in construction, and cost is relatively low, in real time monitoring communication, link load, operating condition, can and
When detect fault message, saved maintenance cost.
The present invention solves technical problem and adopted the following technical scheme that：
The invention provides a kind of digital video fiber optic transmitter, including light end emitter and light end receiver, in addition to：Fault detect
Module, warning module；
Wherein, light end emitter includes：Analog input interface, is connected with outside vision cable, is regarded for receiving simulation
Frequency signal；AD conversion unit, for analog video signal to be converted into data signal；Laser emission element, for receiving number
Word signal, transmission video signal is carried out by the Laser emission comprising video information to optical fiber；
Light end receiver includes：Laser pick-off unit, for receiving laser from adjacent optical fiber；Demodulating unit, for from swash
Digital video signal is demodulated in light；D/A conversion unit, for digital video signal to be converted into analog video signal；Simulation
Signal output interface, for analog video signal to be exported；
Fault detection module includes：Communication check module, for detecting between adjacent video optical multiplexer whether proper communication, when
When communication occurs abnormal, send abnormal signal to warning module and carry out failure prompting；Physical link detection module, for obtaining light
The luminous power that is an actually-received of end receiver, according to luminous power and default transmitting luminous power, obtains be connected end-to-end and regards
The physical link loss of the optical fiber link connected between frequency optical transmitter and receiver；Maximum link detection module, for obtaining video optical multiplexer
Light end receiver test luminous power, according to the test luminous power and default transmitting luminous power, obtain adjacent video light end
The maximum link loss of the optical fiber link connected between machine.
Further, the digital video fiber optic transmitter also includes：
Display module, is connected with the fault detection module, for showing that default transmitting luminous power, physical link are lost, most
Big link load, is additionally operable to show working condition, running parameter and the warning information of optical transmitter and receiver.
Further, the default transmitting luminous power is the actual transmission of light end emitter of adjacent video optical multiplexer
Launch luminous power.
Further, the fault detection module also includes：
Communication module, for when the difference that physical link is lost and maximum link is lost is in default exhaustion range, generating and sending
Warning information is to warning module.
Further, the fault detection module also includes：
State monitoring module, is monitored for the working condition to video optical multiplexer, occurs monitoring the video optical multiplexer
During failure, generation warning information carries out early warning prompting.
Further, the analog input interface is realized with analog signal output interface using RS485 data-interfaces.
Further, the demodulating unit is fiber optic modulator.
Present invention also offers a kind of digital video fiber optic transmitter detection method, comprise the following steps：
S10：Analog input interface is connected with outside vision cable, receives analog video signal；AD conversion unit will
Analog video signal is converted to data signal；Laser emission element receives data signal, by the Laser emission comprising video information
Carry out transmission video signal to optical fiber；
S20：Laser pick-off unit receives laser from adjacent optical fiber；Demodulating unit demodulates digital video letter from laser
Number；Digital video signal is converted into analog video signal by D/A conversion unit；Analog signal output interface believes analog video
Number output；
S30：Communication check module detect between adjacent video optical multiplexer whether proper communication, when communication occurs abnormal, hair
Abnormal signal to warning module is sent to carry out failure prompting；
S40：Physical link detection module obtains the luminous power that light end receiver is an actually-received, according to luminous power and default hair
Luminous power is penetrated, the physical link loss of the optical fiber link connected between the end-to-end video optical multiplexer being connected is obtained；
S50：Maximum link detection module obtains the test luminous power of the light end receiver of video optical multiplexer, according to the test light work(
Rate and default transmitting luminous power, obtain the maximum link loss of the optical fiber link connected between adjacent video optical transmitter and receiver.
Compared with prior art, the present invention has the advantages that：
1. the digital video fiber optic transmitter of the present invention, simple in construction, cost is relatively low, and detection method by monitoring communication, link in real time
Loss, operating condition, fault message can be detected in time, maintenance cost has been saved, is adapted to promote the use of.
2. the digital video fiber optic transmitter and optical transmitter and receiver detection method of the present invention, fault detection module can detect the failure
Between video optical multiplexer where detection module and the upper video optical multiplexer being connected with the video optical multiplexer whether positive normal open
Letter, when detecting the upper video that detects video optical multiplexer where the fault detection module and be connected with the video optical multiplexer
Between optical transmitter and receiver during communication abnormality, warning module can be sent a signal in time and carries out failure prompting.Therefore, using or safeguarding
During once there is any problem, you can the out of order video optical multiplexer of detection, surveyed without professional and technical personnel using specialty
Examination equipment detects maintenance at the scene, can efficiently fix a breakdown, it is to avoid the use of influence video optical multiplexer.
Brief description of the drawings
Fig. 1 is a kind of structural representation of digital video fiber optic transmitter of the embodiment of the present invention 1；
Fig. 2 is a kind of structural representation of digital video fiber optic transmitter of the embodiment of the present invention 2；
Fig. 3 is a kind of flow chart of digital video fiber optic transmitter detection method of the embodiment of the present invention 1.
Embodiment
In order that the purpose, technical scheme and advantage of the embodiment of the present invention are more clearly understood that, with reference to embodiment and accompanying drawing,
Embodiments of the invention are further described in detail.Here, the present invention illustrative examples and illustrate be used for explain
The present invention, but it is not as a limitation of the invention.
Embodiment 1
As shown in figure 1, a kind of digital video fiber optic transmitter of the present embodiment, including light end emitter 10 and light end receiver 20, event
Hinder detection module 30, warning module 40.
Wherein, light end emitter 10 includes：Analog input interface 110, is connected with outside vision cable, for connecing
Receive analog video signal；AD conversion unit 120, for analog video signal to be converted into data signal；Laser emission element
130, for receiving data signal, the Laser emission comprising video information is carried out into transmission video signal to optical fiber.
Light end receiver 20 includes：Laser pick-off unit 210, for receiving laser from adjacent optical fiber；Demodulating unit
220, for demodulating digital video signal from laser；D/A conversion unit 230, for digital video signal to be converted into mould
Intend vision signal；Analog signal output interface 240, for analog video signal to be exported.
Fault detection module 30 includes：Communication check module 310, for detecting between adjacent video optical multiplexer whether just
Normal open is believed, when communication occurs abnormal, sends abnormal signal to warning module 40 and carries out failure prompting；Physical link detection module
320, for obtaining the luminous power that light end receiver is an actually-received, according to luminous power and default transmitting luminous power, obtain phase
The physical link loss of the optical fiber link connected between the end-to-end video optical multiplexer of connection；Default transmitting luminous power is adjacent
Video optical multiplexer the actual transmission of light end emitter transmitting luminous power.Maximum link detection module 330, for obtaining video
The test luminous power of the light end receiver of optical transmitter and receiver, according to the test luminous power and default transmitting luminous power, obtains adjacent regard
The maximum link loss of the optical fiber link connected between frequency optical transmitter and receiver.
As shown in figure 3, the detection method of the digital video fiber optic transmitter of the present embodiment, comprises the following steps：
S10：Analog input interface is connected with outside vision cable, receives analog video signal；AD conversion unit will
Analog video signal is converted to data signal；Laser emission element receives data signal, by the Laser emission comprising video information
Carry out transmission video signal to optical fiber.
S20：Laser pick-off unit receives laser from adjacent optical fiber；Demodulating unit demodulates digital video from laser
Signal；Digital video signal is converted into analog video signal by D/A conversion unit；Analog signal output interface is by analog video
Signal output.
S30：Communication check module detect between adjacent video optical multiplexer whether proper communication, when communication occur it is abnormal
When, send abnormal signal to warning module and carry out failure prompting.
S40：Physical link detection module obtains the luminous power that light end receiver is an actually-received, according to luminous power and default
Transmitting luminous power, obtain the physical link loss of the optical fiber link connected between the end-to-end video optical multiplexer that is connected.
S50：Maximum link detection module obtains the test luminous power of the light end receiver of video optical multiplexer, according to the test
Luminous power and default transmitting luminous power, obtain the maximum link loss of the optical fiber link connected between adjacent video optical transmitter and receiver.
The digital video fiber optic transmitter and optical transmitter and receiver detection method of the present embodiment, fault detection module can detect that the failure is examined
Survey between the video optical multiplexer where module and the upper video optical multiplexer that is connected with the video optical multiplexer whether proper communication,
When detecting the upper video light that detects video optical multiplexer where the fault detection module and be connected with the video optical multiplexer
Between terminal during communication abnormality, warning module can be sent a signal in time and carries out failure prompting.Therefore, using or safeguarding
Once there is any problem in journey, you can the out of order video optical multiplexer of detection, professional test is used without professional and technical personnel
Equipment detects maintenance at the scene, can efficiently fix a breakdown, it is to avoid the use of influence video optical multiplexer.
Embodiment 2
As shown in Fig. 2 a kind of digital video fiber optic transmitter of the present embodiment, including light end emitter 10 and light end receiver 20, event
Hinder detection module 30, warning module 40, display module 50.
Wherein, light end emitter 10 includes：Analog input interface 110, is connected with outside vision cable, for connecing
Receive analog video signal；AD conversion unit 120, for analog video signal to be converted into data signal；Laser emission element
130, for receiving data signal, the Laser emission comprising video information is carried out into transmission video signal to optical fiber.
Light end receiver 20 includes：Laser pick-off unit 210, for receiving laser from adjacent optical fiber；Demodulating unit
220 be fiber optic modulator, for demodulating digital video signal from laser；D/A conversion unit 230, for by digital video
Signal is converted into analog video signal；Analog signal output interface 240, for analog video signal to be exported.Wherein, simulation letter
Number input interface 110 is realized with analog signal output interface 240 using RS485 data-interfaces.
Fault detection module 30 includes：Communication check module 310, for detecting between adjacent video optical multiplexer whether just
Normal open is believed, when communication occurs abnormal, sends abnormal signal to warning module 40 and carries out failure prompting；Physical link detection module
320, for obtaining the luminous power that light end receiver is an actually-received, according to luminous power and default transmitting luminous power, obtain phase
The physical link loss of the optical fiber link connected between the end-to-end video optical multiplexer of connection；Maximum link detection module 330, is used
In the test luminous power for the light end receiver for obtaining video optical multiplexer, according to the test luminous power and default transmitting luminous power,
Obtain the maximum link loss of the optical fiber link connected between adjacent video optical transmitter and receiver.Communication module 350, for working as physical link
The difference of loss and maximum link loss generates and sends warning information to warning module in default exhaustion range.Status monitoring
Module 340, is monitored for the working condition to video optical multiplexer, when monitoring the video optical multiplexer and breaking down, raw
Early warning prompting is carried out into warning information.
Display module 50, is connected with the fault detection module 30, for showing default transmitting luminous power, physical link
Loss, maximum link loss, are additionally operable to show working condition, running parameter and the warning information of optical transmitter and receiver.
The digital video fiber optic transmitter of the present embodiment, simple in construction, cost is relatively low, detection method by monitor in real time communication,
Link load, operating condition, fault message can be detected in time, maintenance cost has been saved, and be adapted to promote the use of.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of digital video fiber optic transmitter, including light end emitter and light end receiver, it is characterised in that also include：Failure is examined
Survey module, warning module；
Wherein, light end emitter includes：Analog input interface, is connected with outside vision cable, is regarded for receiving simulation
Frequency signal；AD conversion unit, for analog video signal to be converted into data signal；Laser emission element, for receiving number
Word signal, transmission video signal is carried out by the Laser emission comprising video information to optical fiber；
Light end receiver includes：Laser pick-off unit, for receiving laser from adjacent optical fiber；Demodulating unit, for from swash
Digital video signal is demodulated in light；D/A conversion unit, for digital video signal to be converted into analog video signal；Simulation
Signal output interface, for analog video signal to be exported；
Fault detection module includes：Communication check module, for detecting between adjacent video optical multiplexer whether proper communication, when
When communication occurs abnormal, send abnormal signal to warning module and carry out failure prompting；Physical link detection module, for obtaining light
The luminous power that is an actually-received of end receiver, according to luminous power and default transmitting luminous power, obtains be connected end-to-end and regards
The physical link loss of the optical fiber link connected between frequency optical transmitter and receiver；Maximum link detection module, for obtaining video optical multiplexer
Light end receiver test luminous power, according to the test luminous power and default transmitting luminous power, obtain adjacent video light end
The maximum link loss of the optical fiber link connected between machine.
2. digital video fiber optic transmitter according to claim 1, it is characterised in that the digital video fiber optic transmitter also includes：
Display module, is connected with the fault detection module, for showing that default transmitting luminous power, physical link are lost, most
Big link load, is additionally operable to show working condition, running parameter and the warning information of optical transmitter and receiver.
3. digital video fiber optic transmitter according to claim 1 or 2, it is characterised in that the default transmitting luminous power is
The transmitting luminous power of the actual transmission of light end emitter of adjacent video optical multiplexer.
4. digital video fiber optic transmitter according to claim 1, it is characterised in that the fault detection module also includes：
Communication module, for when the difference that physical link is lost and maximum link is lost is in default exhaustion range, generating and sending
Warning information is to warning module.
5. digital video fiber optic transmitter according to claim 1, it is characterised in that the fault detection module also includes：
State monitoring module, is monitored for the working condition to video optical multiplexer, occurs monitoring the video optical multiplexer
During failure, generation warning information carries out early warning prompting.
6. digital video fiber optic transmitter according to claim 1, it is characterised in that the analog input interface and simulation
Signal output interface is realized using RS485 data-interfaces.
7. digital video fiber optic transmitter according to claim 1, it is characterised in that the demodulating unit is fiber optic modulator.
8. a kind of digital video fiber optic transmitter detection method, it is characterised in that comprise the following steps：
S10：Analog input interface is connected with outside vision cable, receives analog video signal；AD conversion unit will
Analog video signal is converted to data signal；Laser emission element receives data signal, by the Laser emission comprising video information
Carry out transmission video signal to optical fiber；
S20：Laser pick-off unit receives laser from adjacent optical fiber；Demodulating unit demodulates digital video letter from laser
Number；Digital video signal is converted into analog video signal by D/A conversion unit；Analog signal output interface believes analog video
Number output；
S30：Communication check module detect between adjacent video optical multiplexer whether proper communication, when communication occurs abnormal, hair
Abnormal signal to warning module is sent to carry out failure prompting；
S40：Physical link detection module obtains the luminous power that light end receiver is an actually-received, according to luminous power and default hair
Luminous power is penetrated, the physical link loss of the optical fiber link connected between the end-to-end video optical multiplexer being connected is obtained；
S50：Maximum link detection module obtains the test luminous power of the light end receiver of video optical multiplexer, according to the test light work(
Rate and default transmitting luminous power, obtain the maximum link loss of the optical fiber link connected between adjacent video optical transmitter and receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710410589.6A CN107124599A (en) | 2017-06-03 | 2017-06-03 | A kind of digital video fiber optic transmitter and digital video fiber optic transmitter detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710410589.6A CN107124599A (en) | 2017-06-03 | 2017-06-03 | A kind of digital video fiber optic transmitter and digital video fiber optic transmitter detection method |
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| CN107124599A true CN107124599A (en) | 2017-09-01 |
Family
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| CN201710410589.6A Withdrawn CN107124599A (en) | 2017-06-03 | 2017-06-03 | A kind of digital video fiber optic transmitter and digital video fiber optic transmitter detection method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685465A (en) * | 2012-05-28 | 2012-09-19 | 成都微迪数字系统技术有限公司 | Video optical transmitter and receiver and detecting method for video optical transmitter and receiver |
| CN202679529U (en) * | 2012-06-08 | 2013-01-16 | 续猛 | Digital video optical transceiver |
| CN105959058A (en) * | 2016-06-07 | 2016-09-21 | 太原理工大学 | Device and method for rapidly detecting time division multiplexing optical network link fault |
| CN206042001U (en) * | 2016-08-31 | 2017-03-22 | 天津慧海创先科技发展有限公司 | Digital video optical transceiver |
-
2017
- 2017-06-03 CN CN201710410589.6A patent/CN107124599A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685465A (en) * | 2012-05-28 | 2012-09-19 | 成都微迪数字系统技术有限公司 | Video optical transmitter and receiver and detecting method for video optical transmitter and receiver |
| CN202679529U (en) * | 2012-06-08 | 2013-01-16 | 续猛 | Digital video optical transceiver |
| CN105959058A (en) * | 2016-06-07 | 2016-09-21 | 太原理工大学 | Device and method for rapidly detecting time division multiplexing optical network link fault |
| CN206042001U (en) * | 2016-08-31 | 2017-03-22 | 天津慧海创先科技发展有限公司 | Digital video optical transceiver |
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Application publication date: 20170901 |
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