Dezhi Xiong

Design of Smart-Meter data acquisition device based on Cloud Platform

In recent years, the government has attached great importance to Four-Meter Unified Project. Under the call of national policy, State Grid is participate in building Four-Meter Unified Project actively by making use of electricity information acquisition system. In this paper, a new type Smart-Meter data acquisition device based on Cloud Platform is designed according to the newest series of standards Energy Measure and Management System for Electric, Water, Gas and Heat Meter, and this paper introduces the general scheme, main hardware design and main software design for the Smart-Meter data acquisition device.

The design and simulation of UHF RFID microstrip antenna

At present, China has delineated UHF RFID communicating frequency range which is 840 ~ 845 MHz and 920 ~ 925 MHz, but most UHF microstrip antenna dont carry out this standard, that leads to radio frequency pollution. In order to solve the problems above, a method combining theory and simulation is adopted. Combining with a new ceramic material, a 925.5 MHz RFID microstrip antenna is designed, which is optimized and simulated by HFSS software. The results show that the VSWR of this RFID microstrip antenna is relatively small in the vicinity of 922.5 MHz, the gain is 2.1 dBi, which can be widely used in Chinas UHF RFID communicating equipments.