摘要
为获得精确电能表信息,降低数据传输过程中的串改和误码现象,设计基于DDC的电能表微功率无线通信信号干扰监测系统.利用DDC技术将中频信号下变频为基带信号,采用增益误差与相位误差增强微功率无线通信信号强度;按照信号干扰监测系统功能需求与规划,运用上位机和信号频谱监测干扰设备组建系统框架,在上位机数据交换时采用USB模式,提升系统便携性与实用性,射频接收前端使用零中频架构,简化监测过程,完成高品质信号干扰监测系统构建.实验结果表明,所设计系统具备优秀的信号干扰监测精度与速率,为电能表的高效信息采集提供技术支持.
In order to obtain accurate information of watt-hour meter and reduce serial correction and bit error in the process of data transmission,a micro-power wireless communication signal interference monitoring system based on DDC is designed.The large and small scale attenuation characteristics of micro power wireless communication channel are calculated,the IF signal is down converted into baseband signal by DDC technology,and the gain error and phase error are used to enhance the signal strength of micro power wireless communication.According to the functional requirements and planning of the signal interference monitoring system,the host computer and signal spectrum monitoring equipment are used to establish the system framework.The USB mode is adopted in the data exchange of the host computer to improve the portability and practicability of the system.The RF receiving front end uses zero if architecture to simplify the monitoring process and complete the construction of high-quality signal interference monitoring system.The experimental results show that the designed system has excellent signal interference monitoring accuracy and rate,and provides technical support for efficient information acquisition of watt-hour meter.
作者
孙道兵
SUN Dao-bing(School of Mechanical and Electrical Engineering,Hefei Binhu Vocational&Technical College,Hefei Anhui 230601,China)
出处
《菏泽学院学报》
2021年第5期34-38,共5页
Journal of Heze University
基金
安徽省教育厅高校省级质量工程研究项目(皖教秘高(2018)43号)。
关键词
数字下变频
电能表
微功率无线通信
信号干扰
监测系统
digital down conversion
watt-hour meter
micro-power wireless communication
signal interference
monitoring system
