Biography
Enrollment Date: 2013
Graduation Date：2016
Degree：M.S.
Defense Date：2016.09.13
Advisors：Hong Chen
Department：Institute of Microelectronics，Tsinghua University
Title of Dissertation/Thesis：Research and Implementation of Micro-Power Wireless Data Transmission Protocol
Abstract:
For the construction of a sustained society of harmony, the party and the government has put energy-saving and emission-reduction as a basic policy. In response to the national policy, the State Grid Corp set “accelerate the construction of power user electric energy data acquisition system” into the “China State Grid Corp ‘11th Five-Year’ power marketing development plan”. Power user electric energy data acquisition system includes master station, remote channel, concentrator, local channel, collector, meter and so on. Local channels are used for the communication connection between concentrator and collector or ammeter, the commonly used method of meter reading is RS485 and low voltage carrier. RS485 wiring is complex with large signal attenuation. Low voltage load method is easy to be affected by the load of power grid, and the meter reading is not stable enough. Therefore, the State Grid Corp introduces wireless communication into power user electric energy data acquisition system, and puts forward “Power user electric energy data acquisition system communication protocol Part 4:Micro-Power Wireless Data Transmission Protocol” applied to wireless automatic meter reading in the local communication, or MPWDTP for short.The main work in this thesis is as follows:(1) Application background and research status at home and abroad are studied.(2) Based on the analysis and summarization of the MPWDTP protocol proposed by the national grid, the overall structure of the protocol stack and the the verification scheme are designed.(3) Based on the opnet network simulation software, proto-c language is used to write the node model of center node and child nodes, and point to point communication simulation environment is built, by which energy consumption, channel access delay and network load parameters are simulated.(4) Based on VC6.0 software, C language is utilized to write the protocol stack, achieved the core functions of network layer MAC layer and physical layer.(5) The software radio platform is adopted to verify the protocol stack. Results show that the protocol stack can complete various functions of the MPWDTP protocol, such as central node networking, data communication, child node information collection and so on. Protocol stack is in accordance with MPWDTP protocol, and can be used in the field of wireless meter reading in the future.