CN203691418U

CN203691418U - Building optical receiver

Info

Publication number: CN203691418U
Application number: CN201320722887.6U
Authority: CN
Inventors: 陈伟强; 张学锋; 曾宪章; 刘裕群; 苏炳潮; 詹文辉; 陈雄立; 王锦木
Original assignee: Chaozhou SOUTHKING Technology Co Ltd
Current assignee: Chaozhou SOUTHKING Technology Co Ltd
Priority date: 2013-11-15
Filing date: 2013-11-15
Publication date: 2014-07-02
Anticipated expiration: 2023-11-15

Abstract

The utility model discloses a building optical receiver comprising a fiber connected with a front end and comprising an optical receiving module, a front-stage amplifying module, a microcomputer control/display module, a digitally-controlled adjustable equalizer, a digitally-controlled adjustable attenuator, a rear-stage amplifying module, a splitter, and a radio frequency output connector which are successively in signal connection. The fiber is in signal connection with the optical receiving module. The building optical receiver has beneficial effects that the digitally-controlled adjustable equalizer and the digitally-controlled adjustable attenuator are beneficial to signal optimization, that parameters such as equilibrium values, attenuation values, input optical power, output level, and in-receiver temperature can be displayed on a LCD liquid crystal display screen of the microcomputer control/display module in real time such that the specific positions of the optical receivers at each node in a network are easy to know and network maintenance is facilitated, and that remote control can be remotely achieved through a network management transponder module such that system maintenance and management is facilitated.

Description

A building type optical receiver

Technical field

The utility model relates to optical receiver, specifically, is a kind of for the employing numerical control equalizer of hfc plant and the building of a numerical-control attenuator type optical receiver.

Background technology

Optical receiver is HFC(Hybrid Fiber-Coaxial, i.e. hybrid fiber coax) visual plant of light signal in Internet Transmission/radiofrequency signal conversion is the capital equipment that connects optical-fiber network and Coaxial distribution network network in HFC.The main structure of radio and television hfc plant is that optical fiber is routed to community at present, be connected into and be deployed in the light signal that optical receiver comparatively large-scale in community transmits front end and be converted to radiofrequency signal, then cascaded RF signal amplifier, amplifier is delivered to every residential building in community by signal by the coaxial cable of comparatively long distance, amplify by a building amplifier again, then enter branch distributor by coaxial cable and arrive in each user family.Deployment way is because coaxial cable length is longer like this, and joint is more, and loss of signal is larger, and signal to noise ratio is low has considerable influence to transmitting digital TV high-definition signal, causes television image frame losing, pauses, occurs the phenomenons such as mosaic, affects watching of user; And because coaxial cable transmission range is longer, after optical receiver, necessary at least amplifier more than secondary of cascade, causes network construction cost higher.Therefore the network configuration that adopts large-scale optical receiver to be deployed in community is not suitable with the demand of present market to CHINA RFTCOM Co Ltd.If adopt a building type optical receiver to be deployed to the mode of residential building, by optical cable laying to every residential building in community, just can not need cascade amplifier directly to connect branch distributor delivers to signal in user family, reduced the length of coaxial cable, reduce again the quantity of joint, very little to loss of signal, signal to noise ratio is high, is conducive to the transmission of digital TV high-definition signal; Use a building type optical receiver to replace large-scale optical fiber to community type optical receiver simultaneously, although increased the quantity of a building optical receiver, but increase on the whole few than the cost of large-scale optical receiver, and due to need to not be after optical receiver cascade dual-stage amplifier again, greatly reduced network construction cost.

But, along with radio and television hfc plant changes to the mode of Fiber-To-The-Building, a building type optical receiver will used in a large number, this has just brought a problem: network engineering personnel carry out the maintenance workload of a building optical receiver can be larger.During particularly according to Mei Dong building number of users and Internet Use adjustment equalizer and attenuator, must carry a large amount of fixed equalizer inserted sheets and fixed attenuator accessory, and easy appearance just in time do not have the situation of the inserted sheet that can meet commissioning requirements; If adopt traditional turn knob potentiometer formula adjustable equalizer and adjustable attenuator, although need not carry accessory, cannot determine equilibrium quantity and attenuation but exist, can not grasp in network the situation that the concrete setting of optical receiver in each node is unfavorable for network operation; And turn knob potentiometer formula adjustable equalizer and adjustable attenuator also have the Frequency Response impact of signal greatlyr, easily cause the harm of Signal Degrade.In addition because present television network broadcast has all started or build apparatus remote management system in net fermenting, and a current building type optical receiver does not substantially possess network management and control ability, does not meet the development trend of television network broadcast.

So, along with television network broadcast is constantly carried out the paving mode of Fiber-To-The-Building head, market must need can in engineering debug and maintenance, confirm in a kind of use equilibrium value and the pad value of product, do not need again to carry a large amount of accessories and just can adjust equilibrium value and pad value, thereby can also avoid turn knob potentiometer formula adjustable equalizer and adjustable attenuator the Frequency Response of signal to be caused to a building type optical receiver of harmful effect deterioration signal.

Utility model content

The purpose of this utility model is in order to provide one have digital control type, scene and pass through network capable of regulating equilibrium value and pad value, and can show in real time the parameters such as equilibrium value, pad value, input optical power, output level, built-in temperature, and the Lou Dongxing that can calibrate displays temperature in machine, there is the building type optical receiver of paving mode network remote management function, that be applicable to television network broadcast Fiber-To-The-Building.

The technical scheme that the utility model solution prior art problem adopts is: it comprises the optical fiber being connected with front end, its improvement is: also comprise the Optical Receivers that signal connects successively, prime amplification module, microcomputerized control/display module, digital control type adjustable equalizer, digital control type adjustable attenuator, rear class amplification module, splitter and radio frequency out splice going splice, and described optical fiber is connected with described Optical Receivers signal, radio and television downlink optical signal is sent to Optical Receivers, described Optical Receivers converts light signal radiofrequency signal to and carries out pre-amplification, through described prime amplification module, signal is amplified again, then by described microcomputerized control/display module, described digital control type adjustable equalizer is controlled, and the slope of signal is adjusted and shown, by described microcomputerized control/display module, described digital control type adjustable attenuator is controlled, and the level height of signal is adjusted and shown, enter described rear class amplification module again and amplify, be finally divided into two-way by described splitter, a road provides a signal output level value to detect online mouth, and the described radio frequency out splice going splice output signal of separately leading up to is gone to user.

Below above technical scheme is further elaborated:

Further, also comprise that one is connected in the temperature tester of described microcomputerized control/display module, the control of described microcomputerized control/display module also shows the temperature value that described temperature tester detects.

Further, a described building type optical receiver is provided with an input optical power sample tap and each monitoring parameter sample tap, described input optical power sample tap and each monitoring parameter sample tap divide level signal to be connected in described microcomputerized control/display module, and gathered parameter information is shown in to described microcomputerized control/display module.

Further, described microcomputerized control/display module comprises main control module and the display module that signal connects, and described display module is LCD LCDs.

The beneficial effects of the utility model are:

One, adopts digital control type adjustable equalizer and digital control type adjustable attenuator, is conducive to optimize signal.

They are two years old, can show in real time the parameters such as equilibrium value and pad value, input optical power, output level, built-in temperature by the LCD LCDs of the microcomputerized control/display module in machine, be convenient to grasp the concrete setting of optical receiver in each node in network, be conducive to network operation; If the built-in temperature and the actual measured value that show are variant, can calibrate temperature show value in the machine, make it realistic value, remote monitoring is accurately grasped to product working status larger help.

Its three, can be by long-range equilibrium value and the pad value of arranging of network management transponder module; Can, by parameters such as network management transponder module Remote Acquisitioning the machine current input optical power, output level value, equilibrium value, pad value, direct-current working volts value and current value, working temperatures, be convenient to very much maintenance and management.

Accompanying drawing explanation

Fig. 1 is the circuit block diagram of a building type optical receiver in the utility model embodiment;

In figure: optical fiber 1; Optical Receivers 2; Prime amplification module 3; Microcomputerized control/display module 4; Digital control type adjustable equalizer 5; Digital control type adjustable attenuator 6; Rear class amplification module 7; Splitter 8; Radio frequency out splice going splice 9; Temperature tester 10; Network management transponder module 11; Input optical power sample tap 12; Each monitoring parameter sample tap 13.

Realization, functional characteristics and the advantage of the utility model object, in connection with embodiment, are described further with reference to accompanying drawing.

Embodiment

Describe the technical solution of the utility model in detail below with reference to drawings and the specific embodiments, so as clearer, understand invention essence of the present utility model intuitively.

As shown in Figure 1, the building of a present embodiment type optical receiver, be applicable to hfc plant, it comprises the optical fiber being connected with front end 1, also comprise signal connects successively Optical Receivers 2, prime amplification module 3, microcomputerized control/display module 4, digital control type adjustable equalizer 5, digital control type adjustable attenuator 6, rear class amplification module 7, splitter 8 and radio frequency out splice going splice 9, and described optical fiber 1 is connected with described Optical Receivers 2 signals.

Wherein, described microcomputerized control/display module 4 comprises main control module and the display module that signal connects, and described display module is LCD LCDs.

From said structure, the workflow of the present embodiment is mainly: radio and television downlink optical signal is sent to Optical Receivers 2 by the optical fiber 1 being connected with front end, described Optical Receivers 2 converts light signal radiofrequency signal to and carries out pre-amplification, through described prime amplification module 3, signal is amplified again, then by the main control module of microcomputerized control/display module 4, digital control type adjustable equalizer 5 is controlled, and the slope of adjusting signal is presented at slope value in LCD LCDs simultaneously, and by the main control module of microcomputerized control/display module 4, digital control type adjustable attenuator 6 is controlled, and the level height of adjusting signal is presented at pad value in LCD LCDs simultaneously, entering described rear class amplification module 7 amplifies again, finally be divided into two-way by described splitter 8, one tunnel provides a signal output level value to detect online mouth, described radio frequency out splice going splice 9 output signals of separately leading up to are gone to user.

In addition, the present embodiment also comprises that one is connected in the temperature tester 10 of described microcomputerized control/display module 4, and described microcomputerized control/display module 4 is controlled and shown the temperature value that described temperature tester 10 detects.Specifically, described microcomputerized control/display module 4 is presented at the temperature value detecting in LCD LCDs, if show value is variant with the actual value with thermometer measure, can calibrate by the main control module of microcomputerized control/display module 4, be adjusted to consistent.

Simultaneously, the present embodiment also comprises a network management transponder module 11, the signal input part of described network management transponder module 11 is connected with described microcomputerized control/display module 4, and the signal output part of network management transponder module 11 is connected with the network management system of front end by RJ45 interface; Described network management transponder module 11 is sent to the information data collecting from microcomputerized control/display module 4 network management system of front end by RJ45 interface, to realize and the mutual communication of network management system.Can also be by long-range equilibrium value and the pad value of arranging of network management transponder module; Can, by parameters such as network management transponder module Remote Acquisitioning the machine current input optical power, output level value, equilibrium value, pad value, direct-current working volts value and current value, working temperatures, be convenient to very much maintenance and management.

Meanwhile, in described building, a type optical receiver is also provided with an input optical power sample tap 12 and each monitoring parameter sample tap 13, described input optical

power sample tap

12 and 13 points of level signals of each monitoring parameter sample tap are connected in described microcomputerized control/display module 4, the each parameter information gathering by the input optical power value gathering by input optical power sample tap 12 and by each monitoring parameter sample tap 13 is shown in the LCD LCDs of described microcomputerized control/display module 4, is beneficial to control in real time each parameter value.

In sum, a building of the present utility model type optical receiver not only adopts digital control type adjustable equalizer 5 and digital control type adjustable attenuator 6, is beneficial to the optimization of signal, and the radio and television that user is accepted are more clear; And, can show in real time the parameters such as equilibrium value and pad value, input optical power, output level, built-in temperature by the LCD LCDs of the microcomputerized control/display module 4 in a building of the present utility model type optical receiver, be convenient to grasp the concrete setting of optical receiver in each node in network, be conducive to network operation; And can realize remote monitoring by network management transponder module 11, thereby accurately grasp on-the-spot operating state, meet very much the development trend of television network broadcast.

The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims

A 1.Yi Zhong building type optical receiver, be applicable to hfc plant, it comprises the optical fiber being connected with front end, it is characterized in that: also comprise the Optical Receivers that signal connects successively, prime amplification module, microcomputerized control/display module, digital control type adjustable equalizer, digital control type adjustable attenuator, rear class amplification module, splitter and radio frequency out splice going splice, and described optical fiber is connected with described Optical Receivers signal, radio and television downlink optical signal is sent to Optical Receivers, described Optical Receivers converts light signal radiofrequency signal to and carries out pre-amplification, through described prime amplification module, signal is amplified again, then by described microcomputerized control/display module, described digital control type adjustable equalizer is controlled, and the slope of signal is adjusted and shown, by described microcomputerized control/display module, described digital control type adjustable attenuator is controlled, and the level height of signal is adjusted and shown, enter described rear class amplification module again and amplify, be finally divided into two-way by described splitter, a road provides a signal output level value to detect online mouth, and the described radio frequency out splice going splice output signal of separately leading up to is gone to user.
2. a building according to claim 1 type optical receiver, it is characterized in that: also comprise that one is connected in the temperature tester of described microcomputerized control/display module, the control of described microcomputerized control/display module also shows the temperature value that described temperature tester detects.
3. a building according to claim 1 type optical receiver, it is characterized in that: a described building type optical receiver is provided with an input optical power sample tap and each monitoring parameter sample tap, described input optical power sample tap and each monitoring parameter sample tap divide level signal to be connected in described microcomputerized control/display module, and gathered parameter information is shown in to described microcomputerized control/display module.
4. a building according to claim 1 type optical receiver, is characterized in that: described microcomputerized control/display module comprises main control module and the display module that signal connects, and described display module is LCD LCDs.