Figure 1: RS485 Communication Version System
SDH - Synchronous Digital Hierarchy (Unified frame structure digital transmission standard rate and standard optical interface, so that the network management system interworking);
MSTP - Multi-Service Transfer Platform (Based on SDH platform, it can access, process and transmit TDM, ATM and Ethernet services simultaneously, and provide multi-service nodes for unified network management);
OLT - Optical Line Terminal (1. transmit Ethernet data to ONU (optical network unit) in broadcast mode; 2. initiate and control the ranging process and record the ranging information; 3. allocate bandwidth for ONU; that is to control the starting time and sending window size of ONU sending data);
POS - Optical fiber splitter;
ONU - Optical Network Unit (Receive broadcast data sent by OLT);
RS485 - communication interface (Network communication interface);
Figure 1, 2, 3 show three versions of Fiber Acquisition Power Management System. The grid of fiber of all the versions are only access to the Concentrator. The meters used are not fiber meters with meter-used ONU. Fiber meter is not recommended because no-existing product, low cost-effectiveness, and unstable performance (Pre-paid meter are optional). So, these versions all use common meters using RS485 communication or micro power wireless communication. All the signals will be collected and decoded by Concentrator. Then the fibers with ONU, POS, OLT and Main Station will achieve the functions of Metering, Monitoring, Pre-payment, Control of distribution, etc.
Figure 1: RS485 Communication Version System = (Pre-paid meters) x RS485 + (Concentrator + ONU + POS + OLT ) x Fiber + PC (Main station monitoring)
Figure 2: Micro power wireless Version System = (Pre-paid meters) x wireless + (Concentrator + ONU + POS + OLT) x Fiber + PC (Main station monitoring)
Figure 3: Micro power wireless Version System = (Pre-paid meters) x (wireless + RS485) + (Concentrator + ONU + POS + OLT) x Fiber + PC (Main station monitoring)
Figure 2: Micro power wirelessVersion System
SDH - Synchronous Digital Hierarchy;
MSTP - Multi-Service Transfer Platform;
OLT - Optical Line Terminal;
POS - Optical fiber splitter;
ONU - Optical Network Unit;
Micro power wireless - communication interface;
Figure 3: Combined communication Version System
SDH - Synchronous Digital Hierarchy;
MSTP - Multi-Service Transfer Platform;
OLT - Optical Line Terminal;
POS - Optical fiber splitter;
ONU - Optical Network Unit;
RS485 - communication interface/ Micro power wireless - communication interface.
