CN204836202U

CN204836202U - Cable network network management transponder

Info

Publication number: CN204836202U
Application number: CN201520529604.5U
Authority: CN
Inventors: 蒲俊; 张�诚
Original assignee: Hefei Catv & Broadband Network Co Ltd
Current assignee: Hefei Catv & Broadband Network Co Ltd
Priority date: 2015-07-21
Filing date: 2015-07-21
Publication date: 2015-12-02
Anticipated expiration: 2025-07-21

Abstract

The utility model discloses a cable network network management transponder, including central processing unit module, local interface, RF MODEM, AD conversion module and state detection control module, RF MODEM includes that FSK demodulation module, level control module and FSK produce the module. The utility model discloses cable network network management transponder communicates reliably, the interference killing feature is strong, in the HFC network, can accomplish network equipment operating data's collection, processing, carries out the control command that management system issued simultaneously, low -power consumption, high integrated, modularized design, general installation appearance, long service life, maintenance convenience.

Description

A kind of cable network network management responder

Technical field

The utility model relates to a kind of network management responder, specifically a kind of cable network network management responder.

Background technology

In a cable TV network real-time management system, transponder is very universal at down channel as a kind of bi-directional communication device, because front end computer sends address with broadcast mode to transponder, and the signal to noise ratio of cable TV downlink system is higher, so the communication of down channel is reliable, and be a kind of shared channel of convergent type at up channel, the communication of multiple transponder to a front end computer during communication, when a transponder communicates, other transponders are equivalent to same audio-frequency noise source, the communication of normal response device will be disturbed after these noise sources are pooled to front end.

Utility model content

The purpose of this utility model is the cable network network management responder providing a kind of stability high, to solve the problem proposed in above-mentioned background technology.

For achieving the above object, the utility model provides following technical scheme:

A kind of cable network network management responder, comprise CPU module, local interface, RFMODEM, A/D modular converter and state-detection control module, described RFMODEM comprises FSK demodulation module, level control block and FSK generation module, described CPU module connects local interface respectively, FSK demodulation module, level control block, FSK generation module, A/D modular converter, analogue data interface, state-detection control module, data memory module and NVRAM, A/D modular converter is connecting analog data-interface also, described level control block also connects FSK generation module and RF port, RF port also connects FSK demodulation module.

As further program of the utility model: described FSK demodulation module adopts chip xr2210.

As the utility model further scheme: described FSK generation module adopts chip CC1150.

Compared with prior art, the beneficial effects of the utility model are: the utility model cable network network management responder reliable communications, antijamming capability are strong, in hfc plant, the collection of network equipment service data, process can be completed, perform the control command that management system issues simultaneously, low-power consumption, high integrated, modularized design, general installation profile, long service life, easy to maintenance.

Accompanying drawing explanation

Fig. 1 is the schematic block circuit diagram of cable network network management responder.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1, in the utility model embodiment, a kind of cable network network management responder, comprise CPU module, local interface, RFMODEM, A/D modular converter and state-detection control module, RFMODEM comprises FSK demodulation module, level control block and FSK generation module, CPU module connects local interface respectively, FSK demodulation module, level control block, FSK generation module, A/D modular converter, analogue data interface, state-detection control module, data memory module and NVRAM, A/D modular converter is connecting analog data-interface also, level control block also connects FSK generation module and RF port, RF port also connects FSK demodulation module.

FSK demodulation module adopts chip xr2210.

FSK generation module adopts chip CC1150.

Operation principle of the present utility model is: refer to Fig. 1, the core component of transponder is CPU module, its main task is on the one hand the order that sends of accepting state detection control module and responds, and completes the parsing of parsing to the mac-layer protocol of HMS and application message layer protocol SNMPv1; On the other hand gather each simulated object parameter of analogue data interface and discrete objects parameter and reconditioning MIB database by A/D modular converter.Data memory module is used for the content of store M IB database, and NVRAM is for depositing the parameter of HMS standard-required non-volatile memories.

Transponder leaves local interface on hardware, its function carrys out the relevant MIB database of situ configuration transponder, such as, certain optical node is maximum has 3 road light emission modules, but often all do not install when practical application, the transmitter module on certain 1 road wherein or certain 2 tunnel may be only installed, can the MIB database of situ configuration transponder light emission module by local interface, certain road transmitter module of corresponding optical node actual installation is selected open-minded, uninstalled transmitter module is selected to turn off, such NMS will obtain the actual installation situation of this optical node inside when traveling through the MIB database of optical node transponder, network management personnel can understand the mount message of optical node according to this, be convenient to engineering maintenance.

The reliable operation of RFMODEM whether directly affect with hfc plant be platform data communication reliability, RFMODEM module adopts independently uplink and downlink channel to be connected to RF port, wherein up channel comprises FSK generation module and level control block, down channel comprises FSK demodulation module, up channel carrier frequency modulation range is 3.2MHz bandwidth, and down channel carrier frequency modulation range is 8MHz bandwidth; Uplink transmission power level has the adjustable range of 24dB.Transponder can automatically intercept effective down channel within the scope of downlink carrier frequency, and then determines effective up channel and uplink transmission power level.

Claims

1. a cable network network management responder, comprise CPU module, local interface, RFMODEM, A/D modular converter and state-detection control module, it is characterized in that, described RFMODEM comprises FSK demodulation module, level control block and FSK generation module, described CPU module connects local interface respectively, FSK demodulation module, level control block, FSK generation module, A/D modular converter, analogue data interface, state-detection control module, data memory module and NVRAM, A/D modular converter is connecting analog data-interface also, described level control block also connects FSK generation module and RF port, RF port also connects FSK demodulation module.

2. cable network network management responder according to claim 1, is characterized in that, described FSK demodulation module adopts chip xr2210.

3. cable network network management responder according to claim 1, is characterized in that, described FSK generation module adopts chip CC1150.