Network management data acquisition unit of field equipment based on hybrid fiber coax (HFC) network radio frequency (RF) backhaul

Abstract

The invention relates to a network management data acquisition unit of field equipment based on hybrid fiber coax (HFC) network radio frequency (RF) backhaul. The data acquisition unit comprises a frequency shift keying (FSK) modulation-demodulation module, a smart host module and a signal conditioning module which are connected in sequence. The FSK modulation-demodulation module receives RF FSK modulating signals from an HFC network and demodulates the RF FSK modulating signals into baseband serial signals as well as sends local baseband serial signals which are modulated by FSK to the HFC network; the smart host module drives the FSK modulation-demodulation module, analyzes a serial signal resolution protocol, acquires analog signals and digital signals from the signal conditioning module, classifies data, and sends the data; and the signal conditioning module is an electric interface which is connected with the field equipment. The data acquisition unit has the advantages that the FSK modulation-demodulation module uses a phase locked loop (PLL) technology and special FSK demodulation chips and level control chips, horizontally expands the communication frequency range of uplink and downlink channels, longitudinally expands the regulating range of sending RF signal levels, and strengthens the application range of the network management data acquisition unit.

Description

technical field [0001] The invention relates to the field of equipment monitoring in the radio and television industry, in particular to a field equipment network management data collector based on HFC network radio frequency return. Background technique [0002] In the field of broadcasting and television, HFC network (Hybrid Fiber Coax fiber coaxial hybrid network) has been widely used at present, and the two-way transformation of HFC network based on radio frequency backhaul is developing rapidly. The cable modem application and various value-added services based on it are vigorously promoted by cable network companies in various places. . Therefore, with the development of business, the reliable operation and maintenance of HFC network has been highly valued. Among them, field equipment is an important part of HFC network, but effective monitoring and management of field equipment has always been a difficult problem. [0003] At present, the field equipment purchased by...

AI Technical Summary

Problems solved by technology

Most of the imported equipment has remote monitoring function, but its hardware communication platform and software communication protocol are customized by the manufacturer, and different manufacturers cannot be interconnected, interoperable and compatible for management; most domestic equipment only provide monitoring electrical interfaces locally, but are unable to provide overall remote management solution

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