CN2927519Y - Two-way light work-station - Google Patents
Two-way light work-station Download PDFInfo
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- CN2927519Y CN2927519Y CNU2006200169862U CN200620016986U CN2927519Y CN 2927519 Y CN2927519 Y CN 2927519Y CN U2006200169862 U CNU2006200169862 U CN U2006200169862U CN 200620016986 U CN200620016986 U CN 200620016986U CN 2927519 Y CN2927519 Y CN 2927519Y
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Abstract
The utility model discloses a both-way optical workstation, comprising a two-way downlink optical signal reception part and a one-way uplink feedback optical emission part; wherein the reception part comprises four parts, namely, autonomous switchover and blending with the primary-spare, downlink drive amplification, downlink output amplification and power loop. The one-way uplink feedback optical emission part comprises a feedback signal adjustor, a low-pass filtering, signal amplification and an optical emission module, etc. Network management data collection circuit embedded in the main circuit panel of optical workstation can conduct working station detection and feedback for the power voltage, AC, DC working voltage, working current, input optical power, output optical power, RF signal output level if each port, etc., and at the same time, perform remote-end control and management for RF signal output level, optical signal primary spare switchover, status switching of feedback channel tristate gate, etc. The network management data collection circuit can also be used in light and electricity signal switchover and transmission at optical connection point of HFC both-way broadband access network.
Description
Technical field
The utility model relates to a kind of light contact light/electrical signal conversion and transmission equipment of HFC two-way broadband Access Network.
Background technology
Optical workstation is one of the light contact light/electrical signal conversion of HFC two-way broadband Access Network and the visual plant in the transmission.China is one-way transmission in the optical workstation major part of usefulness at present, and small part is a transmitted in both directions.Even possess the optical workstation of transmitted in both directions function, but because stability, the poor reliability of its work, the more out of the question remote status of the intelligent control management and network equipment monitoring is so be difficult to satisfy developing rapidly of Fibre Optical Communication Technology.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of stability, bi-directional light work station that reliability is good are provided.
Another one purpose of the present utility model provides a kind of not only stability, reliability is good, and can realize the bi-directional light work station of the remote status monitoring of the intelligent control management and the network equipment.
More than the realization of first purpose can adopt following technical scheme: this programme comprises two road downlink optical signal receiving units and row passback light radiating portion on the way;
Wherein two road downlink optical signal receiving units comprise that the light signal that is connected with light signal that optical fiber transmits with two inputs of the input parallel connection of active and standby automatic transfer switch receives and photoelectric conversion module, and the output of active and standby automatic transfer switch is connected with the high go side and the RF signal downlink distributor of descending promotion amplification module, level detector successively; RF signal downlink distributor is divided into four tunnel parallel connections with the signal of telecommunication and is connected with descending promotion amplifier section; Each circuit in the descending promotion amplifier section comprises the adjustable balanced inserted sheet of fixed attenuation plug-in unit, pre-tilt, input times power amplification module and the bidirectional filter plug-in unit of serial connection successively; Comprise level sensitive circuit, radio frequency signal detector and an electric capacity that high go side is connected with the output of input times power amplification module in the bidirectional filter plug-in unit of every road; This electric capacity is connected with two-way output circuit;
Row passback light radiating portion comprises return path triple gate, return path signal level adjusting module, passback distributor and passback light emission module on the way; Wherein the low go side of the level detector in the above-mentioned bidirectional filter plug-in unit of the difference of four road inputs in the return path triple gate connects, and its output is connected with the input of return path signal level adjusting module respectively; Be connected with a uplink assignment device respectively after the output parallel connection in twos of four return path signal level adjusting modules, be connected with a up total points orchestration after the parallel connection of two uplink assignment devices, the output of up total points orchestration is connected with the input of passback light emission module again; The passback light emission module comprises return path signal amplifying circuit, radio frequency signal detector, signal level regulating circuit, manual gain control circuit, return path signal amplifying circuit and the light/electric modular converter of series connection successively, light/electric modular converter output light signal.
Above said optical signal receiving module preferably adopt original-pack PHILIPS Optical Receivers, amplification module preferably adopts original-pack PHILIPS amplification module.
Above the performance and the parameter of said bidirectional filter, can require according to user's heterogeneous networks to select different dividing frequencies, if there is not particular requirement, preferred model is the 65/87MHz plug-in unit.
More than the realization of second purpose technical scheme below can on the basis of such scheme, further being modified into: this programme is the active and standby automatic transfer switch in said in the above two road downlink optical signal receiving units and promotes also to be provided with a network management interface and a belt network interface between the amplification module, and the output of the input times power amplification module in each parallel circuits in the line output amplifier section down also is provided with a network management interface; Also be provided with a network management interface between manual gain control circuit in the passback light emission component inserted block in the row passback light radiating portion on the way and the signal level regulating circuit.
The operation principle of technique scheme is:
For the down going channel part: it is to accept module by light to carry out downlink optical signal and receive that light is accepted part, and is converted to the signal of telecommunication; Descending light path can realize that active and standby automatic switchover or two-way mix two kinds of work-based logics, and the setting of logic is to realize by RF wire jumper or control switch unit circuit dual mode.Descending RF handles and promotes amplifier section and is made up of adjustment of RF signal and amplification module, adjusts (decay) plug-in unit, times power module promotion amplification, bidirectional filter etc. comprising RF signal allocation, constant tilt plug-in unit, MGC.Adjust (decay) plug-in unit with MGC and carry out the adjustment of RF signal level, 4 descending input port level can be adjusted at the same time or separately; Carry out the adjustment of RF signal slope with MSC, 4 descending input port level all can be adjusted separately.Down going channel adopts the two-rank module high-gain to amplify, and four road times powers independently promote output.Add the RF signal adjustment circuit in the middle of the two-stage amplifying circuit, with the operating state of guaranteeing the inner amplifying circuit of optical workstation and carrier-to-noise ratio (C/N) characteristic of RF output signal.Promote amplification module and closely follow in the back of high-pass filtering circuit, this grade amplification module has bigger signal fan-out capability, gains to more than the 18dB.Be provided with high-pass filtering circuit at down going channel, disturb back with the low-frequency range of control and solution down going channel and scurry return path, and eliminate self-excitation.The RF signal is through after promoting amplification, be divided into four the tunnel, enter the output amplification module after subtracting plug-in unit and pre-tilt plug-in unit through rate respectively again, the inclination circuit can improve the nonlinear distortion index of output signal, and the output signal after amplify on every road enters the high go side of bidirectional filter respectively.
The data feedback channel part: after every road return path signal enters optical workstation, can independently carry out level adjustment, with adjusted signal mix, filtering and amplification.But the crowded problem of independently return path flexible expansion network function, and solution return path.Up transmitter module is the optional plug-in unit of the modularization of plug and play, conveniently uses and transforms.
The beneficial effects of the utility model and advantage are:
1, this optical workstation is stable and reliable for performance, can adapt to various operational environments; Work station can be set to one-way transmission or two kinds of working methods of transmitted in both directions.
2, this optical workstation has disposed reception of two road downlink optical signals and row passback light emission on the way, and two road optical receivers can be implemented on the different routes and be switched flexibly by status monitoring or the control of backup switching driven unit.Four road high level RF signal independence times powers promote output, and when input optical power was 0dBm, the port output level reached as high as 112dB μ V.It is professional that each output port all can be opened passback.
3, four tunnel passback inputs are carried out operating state control by tri state gate control circuit independently, can at utmost suppress the return noise of return path and whole system, and four tunnel passback input signals are adjusted independently.
4, optical workstation can be realized comprehensive remote equipment monitoring and network management by network.Be embedded in the network management data Acquisition Circuit of optical workstation main circuit board, can reach 17 operating states to AC and DC operating voltages such as supply voltage, 60V/AC, 24V/DC, 5V/DC, operating current, input optical power, Output optical power, each port RF signal output level etc. and detect and return, simultaneously far-end control and management be carried out in RF signal output level, active and standby part of switching of light signal, the switching of return path triple gate state etc.
5, the setting of the performance of bidirectional filter, parameter and frequency range can require to select different dividing frequencies according to user's heterogeneous networks.Bidirectional filter adopts looks into the design of part formula, when network adjustment or transformation, can change the bidirectional filter dissimilar, that different frequency is cut apart easily.
The utility model is described in further detail below by drawings and Examples.
Description of drawings
Fig. 1 is the circuit block diagram of embodiment of the present utility model.
Concrete execution mode
Row passback light radiating portion comprises return path triple gate 11, return path signal level adjustment module 112, passback distributor 113 and passback light emission module 12 on the way; Wherein the low go side of the level detector 101 in the above-mentioned bidirectional filter plug-in unit 10 of the difference of four road inputs in the return path triple gate 11 connects, and its output is connected with the input of return path signal level adjustment module 112 respectively; Be connected with a uplink assignment device 113 respectively after the output parallel connection in twos of four return path signal level adjustment modules 112, be connected with a up total points orchestration 114 after two uplink assignment device 113 parallel connections, the output of up total points orchestration 114 is connected with the input of passback light emission module 12 again; Passback light emission module 12 comprises return path signal amplifying circuit 121, radio frequency signal detector 122, return path signal level adjustment circuit 123, manual gain control circuit 125, return path signal amplifying circuit 127 and the light/electric modular converter 128 of series connection successively, light/electric modular converter 128 output light signals 129.
Embodiment 2.Present embodiment is substantially the same manner as Example 1, and difference only is the optical signal receiving module in the such scheme is preferably adopted original-pack PHILIPS Optical Receivers, and amplification module preferably adopts original-pack PHILIPS amplification module.
Embodiment 3.Present embodiment is on the basis of above-mentioned two embodiment, also be provided with a network management interface 4 and a belt network interface 5 between active and standby automatic transfer switch in said two road downlink optical signal receiving units and the promotion amplification module, the output of the input times power amplification module 93 in each parallel circuits in descending promotion amplifier section also is provided with a network management interface 94; Also be provided with a network management interface 124 between manual gain control circuit 125 that passback light emission module in row passback light radiating portion on the way is 12 li and the return path signal level adjustment circuit 123.
Claims (4)
1, a kind of bi-directional light work station is characterized in that comprising two road downlink optical signal receiving units and goes passback light radiating portion on the way;
Wherein two road downlink optical signal receiving units comprise that the light signal that is connected with light signal that optical fiber transmits with two inputs of the input parallel connection of active and standby automatic transfer switch receives and photoelectric conversion module, and the output of active and standby automatic transfer switch is connected with the high go side and the RF signal downlink distributor of descending promotion amplification module, level detector successively; RF signal downlink distributor is divided into four tunnel parallel connections with the signal of telecommunication and is connected with descending promotion amplifier section; Each circuit in the descending promotion amplifier section comprises the adjustable balanced inserted sheet of fixed attenuation plug-in unit, pre-tilt, input times power amplification module and the bidirectional filter plug-in unit of serial connection successively; Comprise level sensitive circuit, radio frequency signal detector and an electric capacity that high go side is connected with the output of input times power amplification module in the bidirectional filter plug-in unit of every road; This electric capacity is connected with two-way output circuit;
Row passback light radiating portion comprises return path triple gate, return path signal level adjusting module, passback distributor and passback light emission module on the way; Wherein the low go side of the level detector in the above-mentioned bidirectional filter plug-in unit of the difference of four road inputs in the return path triple gate connects, and its output is connected with the input of return path signal level adjusting module respectively; Be connected with a uplink assignment device respectively after the output parallel connection in twos of four return path signal level adjusting modules, be connected with a up total points orchestration after the parallel connection of two uplink assignment devices, the output of up total points orchestration is connected with the input of passback light emission module again; The passback light emission module comprises return path signal amplifying circuit, radio frequency signal detector, signal level regulating circuit, manual gain control circuit, return path signal amplifying circuit and the light/electric modular converter of series connection successively, light/electric modular converter output light signal.
2, bi-directional light work station according to claim 1 and 2 is characterized in that said optical signal receiving module adopts original-pack PHILIPS Optical Receivers, and amplification module adopts original-pack PHILIPS amplification module.
3, bi-directional light work station according to claim 2, the model that it is characterized in that said bidirectional filter is the 65/87MHz plug-in unit.
4, bi-directional light work station according to claim 3, it is characterized in that the active and standby automatic transfer switch in said two road downlink optical signal receiving units and promote also being provided with a network management interface and a belt network interface between the amplification module, the output of the input times power amplification module in each parallel circuits in the line output amplifier section down also is provided with a network management interface; Also be provided with a network management interface between manual gain control circuit in the passback light emission component inserted block in the row passback light radiating portion on the way and the signal level regulating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200169862U CN2927519Y (en) | 2006-07-12 | 2006-07-12 | Two-way light work-station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200169862U CN2927519Y (en) | 2006-07-12 | 2006-07-12 | Two-way light work-station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2927519Y true CN2927519Y (en) | 2007-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200169862U Expired - Fee Related CN2927519Y (en) | 2006-07-12 | 2006-07-12 | Two-way light work-station |
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| CN (1) | CN2927519Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104363388A (en) * | 2014-09-29 | 2015-02-18 | 丹东华欣电子科技有限公司 | EPON+EOC local-side double-band mixing device |
| CN109831656A (en) * | 2019-04-04 | 2019-05-31 | 苏州市高事达信息科技股份有限公司 | A kind of reversed transmitting module of the RFOG of two-way light work-station |
-
2006
- 2006-07-12 CN CNU2006200169862U patent/CN2927519Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104363388A (en) * | 2014-09-29 | 2015-02-18 | 丹东华欣电子科技有限公司 | EPON+EOC local-side double-band mixing device |
| CN104363388B (en) * | 2014-09-29 | 2017-07-25 | 丹东华旭电子技术有限公司 | EPON+EOC local side double frequency mixing arrangements |
| CN109831656A (en) * | 2019-04-04 | 2019-05-31 | 苏州市高事达信息科技股份有限公司 | A kind of reversed transmitting module of the RFOG of two-way light work-station |
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| C14 | Grant of patent or utility model | ||
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Addressee: Zhang Jian Document name: Notification of Termination of Patent Right |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |