CN202475432U - Intelligent remote-control optical receiver - Google Patents
Intelligent remote-control optical receiver Download PDFInfo
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- CN202475432U CN202475432U CN2012200967092U CN201220096709U CN202475432U CN 202475432 U CN202475432 U CN 202475432U CN 2012200967092 U CN2012200967092 U CN 2012200967092U CN 201220096709 U CN201220096709 U CN 201220096709U CN 202475432 U CN202475432 U CN 202475432U
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Abstract
The utility model relates to the technical field of HFC (hybrid fiber coaxial) network, and in particular relates to an intelligent remote-control optical receiver. The intelligent remote-control optical receiver comprises a PIN (personal identification number) photoelectric diode, an AGC (automatic gain control) circuit, an output circuit, a reverse pass-back circuit and a control circuit. The intelligent remote-control optical receiver disclosed by the utility model has the advantages of simpleness, practicability, and convenience in operation.
Description
Technical field
The utility model relates to the hfc plant technical field, specifically a kind of intelligent distant control optical receiver.
Background technology
Chinese patent in first to file; Patent name is a kind of optical receiver; Granted publication number is CN201336666Y, discloses a kind of optical receiver and has comprised amplifier and electrically controlled attenuator, and optical power signals is divided into two-way through photoelectric conversion tube; The first via is connected with electrically controlled attenuator through amplifier; The second tunnel optical power signals is connected with miniature control unit, and the signal feedback after the second road interior optical power signals detects through miniature control unit is given electrically controlled attenuator, and automatically controlled balanced mode adjuster and voltage-controlled attenuator are adjusted optical power signals according to the testing result of miniature control unit simultaneously.Above technical scheme is to the testing result of miniature control unit optical power signals to be adjusted, and therefore has certain limitation.
The utility model content
The utility model provides a kind of simple and practical, easy to operate intelligent distant control optical receiver.
The utility model is realized through following technical proposals:
A kind of intelligent distant control optical receiver; Comprise PIN photodiode, agc circuit, output circuit, reverse feedback circuit and control system; Said agc circuit comprises central processing unit, luminous power sample circuit, first radio frequency amplifier, first match circuit and the first digital step attenuator; Said luminous power sample circuit one end is electrically connected with PIN photodiode; The other end is electrically connected with central processing unit, is provided with second match circuit between the said PIN photodiode and first radio frequency amplifier, and said first match circuit, one end is electrically connected with the first radio frequency amplifier output; The other end is electrically connected with the first digital step attenuator input, and the said first digital step attenuator is electrically connected with central processing unit; Said control system is hand-hold type wire remote control devices or manual wireless remote-cotnrolled device; Said hand-hold type wire remote control devices comprises wired communication interface, CPU, display screen and operating key; Said wire communication interface one end is electrically connected with CPU; The other end is electrically connected with the central processing unit of main frame through communication interface in the machine, and said display screen and operating key are electrically connected with CPU; Said manual wireless remote-cotnrolled device comprises wireless communication module, CPU, display screen and operating key; Said wireless communication module one end is electrically connected with CPU; The other end is electrically connected with central processing unit through wireless communication transceiver, and said display screen and operating key are electrically connected with CPU.
Said output circuit comprises second radio frequency amplifier, compensating circuit, signal distributor and two rf output circuits; Said second radio frequency amplifier, one end is electrically connected with the first digital step attenuator; The other end is electrically connected with compensating circuit, and said signal distributor is electrically connected with compensating circuit and rf output circuit respectively; Said output circuit comprises two rf output circuits; Said rf output circuit comprises the second digital step attenuator, signal of telecommunication adjusting equalizing circuit, the 3rd radio frequency amplifier, radio-frequency power amplifier, bi-pass electric-wave filter, signal allocation blender, the input of radio frequency dateout, output level sample circuit and D/A converting circuit; The said second digital step attenuator, signal of telecommunication adjusting equalizing circuit, the 3rd radio frequency amplifier, radio-frequency power amplifier, bi-pass electric-wave filter are electrically connected successively; And be located between said signal distributor and the signal allocation blender; Said radio frequency dateout input is electrically connected with the signal allocation blender; The said second digital step attenuator is electrically connected with central processing unit; The said signal of telecommunication is regulated equalizing circuit and is electrically connected with central processing unit through D/A converting circuit, and said radio frequency dateout input is electrically connected with central processing unit through the output level sample circuit.
Said reverse feedback circuit comprises reverse passback light emission component, first splitter, first attenuator, reverse radio-frequency amplifier, second splitter, blender, second attenuator and the 3rd attenuator; Said reverse passback light emission component, first splitter, first attenuator, reverse radio-frequency amplifier, second splitter and blender are electrically connected successively; Said second attenuator and the 3rd attenuator one end are electrically connected with blender respectively; The other end is electrically connected with the bi-pass electric-wave filter of two rf output circuits respectively; Said reverse passback light emission component is electrically connected with central processing unit; And the output light signal, said first splitter and second splitter are connected with first input respectively and secondary signal detects.
Said intelligent distant control optical receiver also comprises acoustooptic alarm system, is electrically connected with central processing unit.
Said control system comprises display screen and machine inner control key in the machine, all is located on the said intelligent distant control optical receiver, and is electrically connected with central processing unit respectively.
The beneficial effect that the utility model brought is:
The utility model is the intelligent distant control optical receiver by central processing unit control; Agc circuit with automatic gain control; Independent development software through being embedded by luminous power sampling, central processing unit carries out computing; And send level adjustment instruction, and carry out the adjustment order through digital step attenuator again, the radio frequency signal output level is accurately adjusted.The dynamic range of the light signal input power of intelligent distant control optical receiver-10dBm～+ during the broad variation of 2dBm; Can keep stabilizing output level; Nonlinear distortion is little; The light signal range of receiving is big, and AGC control is strong, has solved the hfc plant technical field because the problem of the digital television transfer image quality decrease that the light signal instability causes.Having light signal, to receive dynamic range big, the characteristics that the AGC AGC control is strong, obviously be superior to a kind of optical receiver input optical power for-8dBm～+ control ability of 2dBm.The control mode of said agc circuit through carrying out computing by luminous power sampling, central processing unit and sending level adjustment instruction, is carried out the adjustment order through digital step attenuator again, and the radio frequency signal output level is adjusted.
In addition; Adopt hand-hold type wire remote control devices or manual wireless remote-cotnrolled device to the intelligent distant control optical receiver under the situation of operation; And do not open and carry out the parameters setting under the state of cover and consult, be provided with operations such as debugging, maintenance, greatly convenient and improved engineering construction and network maintenance staff's operating efficiency.The digital step attenuator of wireless or wired remote control, the control ability 0～22dB of its output level attenuation; Wireless or the wired remote control signal of telecommunication is regulated the regulating power 0～12dB of the frequency range isostatic compensation amount of equalizing circuit; The distant control function of hand-hold type wire remote control devices or manual wireless remote-cotnrolled device comprises that agc circuit, internal power supply, output level, attenuation, equilibrium quantity, running time, channel number are provided with etc., the adjustment that all can carry out parameter with consult.Simultaneously, optical receiver is provided with display screen in machine inner control key and the machine, as the standby operation regulator control system of intelligent distant control light-receiving, and operations such as setting, modification adjustment that the parameters of intelligent distant control light-receiving is uncapped.Therefore; The control system of said intelligent distant control optical receiver comprises machine inner control key and the interior display screen of machine that hand-hold type wire remote control devices, manual wireless remote-cotnrolled device and intelligent distant control optical receiver carry; And three kinds of patterns can be compatible, greatly facilitates engineers and technicians' construction and maintenance.
Said intelligent distant control optical receiver is provided with acoustooptic alarm system, and acoustooptic alarm system adopts acousto-optic or display screen prompting mode to send early warning signal.
The dynamic range of the light signal input power of said intelligent distant control optical receiver-10dBm～+ when 2dBm changes; Can keep stabilizing output level constant; The dynamic range that light signal receives is big; And then the AGC AGC control is strong, thereby has improved the transmission quality of hfc plant radiofrequency signal, the broadcasting of having stablized the HDTV program with watch.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further explain.
Fig. 1 is the circuit diagram of the said intelligent distant control optical receiver of the utility model.
The label that component names is corresponding among the figure is following:
1, agc circuit; 2, reverse feedback circuit; 3, hand-hold type wire remote control devices; 4, manual wireless remote-cotnrolled device.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to detail:
Embodiment as the said intelligent distant control optical receiver of the utility model; As shown in Figure 1; Comprise PIN photodiode, agc circuit 1, output circuit, reverse feedback circuit 2 and control system, said agc circuit 1 comprises central processing unit, luminous power sample circuit, first radio frequency amplifier, first match circuit and the first digital step attenuator, and said luminous power sample circuit one end is electrically connected with PIN photodiode; The other end is electrically connected with central processing unit; Be provided with second match circuit between the said PIN photodiode and first radio frequency amplifier, said first match circuit, one end is electrically connected with the first radio frequency amplifier output, and the other end is electrically connected with the first digital step attenuator input; The said first digital step attenuator is electrically connected with central processing unit; Said control system comprises hand-hold type wire remote control devices 3 and manual wireless remote-cotnrolled device 4, and said hand-hold type wire remote control devices 3 comprises wired communication interface, CPU, display screen and operating key, and said wire communication interface one end is electrically connected with CPU; The other end is electrically connected with the central processing unit of main frame through communication interface in the machine, and said display screen and operating key are electrically connected with CPU; Said manual wireless remote-cotnrolled device 4 comprises wireless communication module, CPU, display screen and operating key; Said wireless communication module one end is electrically connected with CPU; The other end is electrically connected with central processing unit through wireless communication transceiver, and said display screen and operating key are electrically connected with CPU.
In the present embodiment; Said output circuit comprises second radio frequency amplifier, compensating circuit, signal distributor and two rf output circuits; Said second radio frequency amplifier, one end is electrically connected with the first digital step attenuator; The other end is electrically connected with compensating circuit, and said signal distributor is electrically connected with compensating circuit and rf output circuit respectively; Said rf output circuit comprises the second digital step attenuator, signal of telecommunication adjusting equalizing circuit, the 3rd radio frequency amplifier, radio-frequency power amplifier, bi-pass electric-wave filter, signal allocation blender, the input of radio frequency dateout, output level sample circuit and D/A converting circuit; The said second digital step attenuator, signal of telecommunication adjusting equalizing circuit, the 3rd radio frequency amplifier, radio-frequency power amplifier, bi-pass electric-wave filter are electrically connected successively; And be located between said signal distributor and the signal allocation blender; Said radio frequency dateout input is electrically connected with the signal allocation blender; The said second digital step attenuator is electrically connected with central processing unit; The said signal of telecommunication is regulated equalizing circuit and is electrically connected with central processing unit through D/A converting circuit, and said radio frequency dateout input is electrically connected with central processing unit through the output level sample circuit.
In the present embodiment; Said reverse feedback circuit 2 comprises reverse passback light emission component, first splitter, first attenuator, reverse radio-frequency amplifier, second splitter, blender, second attenuator and the 3rd attenuator; Said reverse passback light emission component, first splitter, first attenuator, reverse radio-frequency amplifier, second splitter and blender are electrically connected successively; Said second attenuator and the 3rd attenuator one end are electrically connected with blender respectively; The other end is electrically connected with the bi-pass electric-wave filter of two rf output circuits respectively; Said reverse passback light emission component is electrically connected with central processing unit, and the output light signal, and said first splitter and second splitter are connected with first input respectively and secondary signal detects.
In the present embodiment, said intelligent distant control optical receiver also comprises acoustooptic alarm system, is electrically connected with central processing unit.
In the present embodiment, said control system comprises display screen and machine inner control key in the machine, all is located on the said intelligent distant control optical receiver, and is electrically connected with central processing unit respectively.
Claims (5)
1. intelligent distant control optical receiver; It is characterized in that comprising PIN photodiode, agc circuit, output circuit, reverse feedback circuit and control system; Said agc circuit comprises central processing unit, luminous power sample circuit, first radio frequency amplifier, first match circuit and the first digital step attenuator; Said luminous power sample circuit one end is electrically connected with PIN photodiode; The other end is electrically connected with central processing unit, is provided with second match circuit between the said PIN photodiode and first radio frequency amplifier, and said first match circuit, one end is electrically connected with the first radio frequency amplifier output; The other end is electrically connected with the first digital step attenuator input, and the said first digital step attenuator is electrically connected with central processing unit; Said control system is hand-hold type wire remote control devices or manual wireless remote-cotnrolled device; Said hand-hold type wire remote control devices comprises wired communication interface, CPU, display screen and operating key; Said wire communication interface one end is electrically connected with CPU; The other end is electrically connected with the central processing unit of main frame through communication interface in the machine, and said display screen and operating key are electrically connected with CPU; Said manual wireless remote-cotnrolled device comprises wireless communication module, CPU, display screen and operating key; Said wireless communication module one end is electrically connected with CPU; The other end is electrically connected with central processing unit through wireless communication transceiver, and said display screen and operating key are electrically connected with CPU.
2. intelligent distant control optical receiver as claimed in claim 1; It is characterized in that said output circuit comprises second radio frequency amplifier, compensating circuit, signal distributor and two rf output circuits; Said second radio frequency amplifier, one end is electrically connected with the first digital step attenuator; The other end is electrically connected with compensating circuit, and said signal distributor is electrically connected with compensating circuit and rf output circuit respectively; Said output circuit comprises two rf output circuits; Said rf output circuit comprises the second digital step attenuator, signal of telecommunication adjusting equalizing circuit, the 3rd radio frequency amplifier, radio-frequency power amplifier, bi-pass electric-wave filter, signal allocation blender, the input of radio frequency dateout, output level sample circuit and D/A converting circuit; The said second digital step attenuator, signal of telecommunication adjusting equalizing circuit, the 3rd radio frequency amplifier, radio-frequency power amplifier, bi-pass electric-wave filter are electrically connected successively; And be located between said signal distributor and the signal allocation blender; Said radio frequency dateout input is electrically connected with the signal allocation blender; The said second digital step attenuator is electrically connected with central processing unit; The said signal of telecommunication is regulated equalizing circuit and is electrically connected with central processing unit through D/A converting circuit, and said radio frequency dateout input is electrically connected with central processing unit through the output level sample circuit.
3. intelligent distant control optical receiver as claimed in claim 2; It is characterized in that said reverse feedback circuit comprises reverse passback light emission component, first splitter, first attenuator, reverse radio-frequency amplifier, second splitter, blender, second attenuator and the 3rd attenuator; Said reverse passback light emission component, first splitter, first attenuator, reverse radio-frequency amplifier, second splitter and blender are electrically connected successively; Said second attenuator and the 3rd attenuator one end are electrically connected with blender respectively; The other end is electrically connected with the bi-pass electric-wave filter of two rf output circuits respectively; Said reverse passback light emission component is electrically connected with central processing unit, and the output light signal, and said first splitter and second splitter are connected with first input respectively and secondary signal detects.
4. intelligent distant control optical receiver as claimed in claim 3 is characterized in that said intelligent distant control optical receiver also comprises acoustooptic alarm system, is electrically connected with central processing unit.
5. intelligent distant control optical receiver as claimed in claim 4 is characterized in that said control system comprises display screen and machine inner control key in the machine, all is located on the said intelligent distant control optical receiver, and is electrically connected with central processing unit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200967092U CN202475432U (en) | 2012-03-15 | 2012-03-15 | Intelligent remote-control optical receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200967092U CN202475432U (en) | 2012-03-15 | 2012-03-15 | Intelligent remote-control optical receiver |
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| Publication Number | Publication Date |
|---|---|
| CN202475432U true CN202475432U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200967092U Expired - Fee Related CN202475432U (en) | 2012-03-15 | 2012-03-15 | Intelligent remote-control optical receiver |
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| CN (1) | CN202475432U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245287A (en) * | 2015-09-24 | 2016-01-13 | 江苏阿尔特光电科技有限公司 | Indoor type optical receiver |
| CN109474351A (en) * | 2018-12-20 | 2019-03-15 | 四川璧虹广播电视新技术有限公司 | A kind of AGC control method for satellite optical receiver circuit |
-
2012
- 2012-03-15 CN CN2012200967092U patent/CN202475432U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245287A (en) * | 2015-09-24 | 2016-01-13 | 江苏阿尔特光电科技有限公司 | Indoor type optical receiver |
| CN109474351A (en) * | 2018-12-20 | 2019-03-15 | 四川璧虹广播电视新技术有限公司 | A kind of AGC control method for satellite optical receiver circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20150315 |
|
| EXPY | Termination of patent right or utility model |