智能多用户单相载波电能表的研究

哈尔滨理工大学工程硕士学位论文The research of intelligent multi-user meter basedon single-phase carrierAbstractWith the rapid development of our citizen's residential construction,thenumber of energy meters in buildings are increasing day by day.Traditionalapplication mode focusing many energy meters pegged as a"meter wall",is notconducive to the concentration of new residential electricity management for itsbig size and high cost.Intelligent multi-user energy meter based on single-phasecarrier can measure,centralized control and manage several users'electricityconsumption in real time using ASIC and high-performance microcontroller.The key of the designing of the system are reliability,service life andaccuracy of measurement.In this paper,with the use of high-precision ADI'sADE7755 and the design of the external circuit,the system can meet the accuracyrequirements when the power factor(PF)is much higher than 1 and PF+0.5,in themeantime the dynamic range of the energy meter is higher than 500.The core ofthe intelligence processing unit is PIC16C65B,which can collect and accumulatethe electric pulse,process and store the data,connect the clock in real time,showthe electricity consumption and realize the function of communication.Remotecommunication using low-voltage power line carrier communication facilitatesthe electricity sector on the residents'electricity consumption in real-timereading,data collection and monitoring.The design also include infraredcommunication module which can communicate with PDAs for the clients thatdon't have remote reading system to complete local reading function.This design effectively sets out the problems that come from the influence ofother chips,realises the check of multi-meters at the same time,promotes thespeed and the reliability of the meters,and resolves the difficulties about the dataprotection of non-volatile memory and service life through considering about theelectromagnetic compatibility issues,such as analyze thoroughly of componentsⅡ