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PowerPC-based Power Line Carrier router to achieve

Author: TianZuo
Tutor: GuoQianGang
School: Nanjing University of Posts and Telecommunications
Course: Control Theory and Control Engineering
Keywords: Power Line Carrier Relaying Multi-tree traversal optimization MPC850 SQlite
CLC: TN915.853
Type: Master's thesis
Year: 2011
Downloads: 73
Quote: 1
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Abstract


Power line carrier communication technology has been widely used in the power industry automation meter reading systems, automated meter reading system using the carrier meter reading technology that can give full play to the existing power line resources, no additional wiring. The so-called carrier meter reading is the end of the carrier by means of user-meter module, through the low-voltage power line carrier the user information to be sent to the concentrator, enabling the user sets the region Collecting information centralized energy meter. Since the power is the use of power line carrier as a transmission medium, the length of power lines from the power load and users will be on the impact of power line carrier communication effect, therefore, through the realization of a single carrier module area straight copy of all the meter is not realistic. The most commonly used solution is to install per meter relay forwarding function with a carrier module, you can not directly copy a table from which you can close or signal quality better be relayed Collecting table. Power line carrier communication channel, and its carrier communication signal attenuation, interference serious instability. How the line status and the communication distances of the meter automatically assigned relay node and dynamically maintain these nodes are to relay Collecting should solve the problem. This article is based carrier relaying technology, design a reading system used in carrier routers to achieve the path of the user node Collecting intelligence OK. The router is equipped with a MPC850 hardware configuration as the main processor, clocked at 50MHZ, the internal integration of PowerPC core and a serial communication designed specifically for communications processor module (CPM). Memory with 32M of SDRAM and 8M of NorFlash. Software system platform uses embedded linux operating system, and with a SQlite as an embedded database to store user data and system configuration information meter, embedded boa web server used to implement the router web management and control. Used in the design of the software based on the dynamic link library modular design, which greatly shorten the development cycle, but the system has excellent scalability, maintainability, and remote upgrade capabilities. In the routing algorithm design, according to the characteristics of power line carrier meter relay, to design a multi-tree traversal automatic relay optimization algorithm, which theoretically can be achieved under the Taiwan Area hundred percent Collecting meter data. Practical application can automatically relay relay with semiautomatic combined reading system in order to ensure the stability and flexibility.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication network > Private communication network > Electric Power Communication Network
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