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发明公开
CN102510466A 用于有线电视网络改造的光接收机数据采集电路 无效 - 撤回

用于有线电视网络改造的光接收机数据采集电路
摘要：
一种用于有线电视网络改造的光接收机数据采集电路，属于有线电视技术领域。包括运放U1、U2、芯片U3、U4、数据接口CZ1、正向光接收PIN管D1、二极管D2-D4、匹配线圈Z1-Z3、开关电源U7、三端稳压块U5、U6、电感L1-L4、电阻R1-R34和电容C1-C15，其中U1、U2为LM258运放，芯片U3、U4为MAX4003射频信号检测芯片，U5为L7805CV三端稳压块，U6为L7808CV三端稳压块，U7为XFTAC60V-042B52A开关电源。优点：实现从广电环网到分机房的全网监控，相当于为整个HFC网络提供了一扇窗户，透过窗口可以看到当前网络中光接收机工作的全景状态，以及预计下一秒将发生什么。
摘要（英）：

The invention relates to a data acquisition circuit for an optical receiver for transforming a cable TV network and belongs to the technical field of cable television. The data acquisition circuit comprises operational amplifiers U1 and U2, chips U3 and U4, a data interface CZ1, a forward optical receiving PIN diode D1, diodes D2-D4, matching coils Z1-Z3, a switch power supply U7, three-terminal voltage-stabilizing blocks U5 and U6, inductors L1-L4, resistors R1-R34 and capacitors C1-C15, wherein U1 and U2 are LM258 operational amplifiers; U3 and U4 are MAX4003 radio frequency signal detecting chips; U5 is L7805CV three-terminal voltage-stabilizing block; U6 is L7808CV three-terminal voltage-stabilizing block; and U7 is XFTAC60V-042B52A switch power supply. The data acquisition circuit has the advantages that the whole network monitoring from a radio and broadcast looped network to branch machine rooms is realized, equivalently, a window is supplied to the whole HFC (Hybrid Fiber Coaxial) network, the whole working state of the optical receiver in the network can be seen from the window, and an event which happens in the next second is predicted.

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