The Study Of Wireless Meter Reading Terminal Based On NRF9E5 And GPRS

Wireless Meter Reading is a new technology which applies electric power meter terminal's acquisition, transmission and processing to the monitoring system of electric energy. It fundamentally overcomes the shortcomings of traditional manual meter reading, and also provides better and convenient services.nRF9E5 is a wireless communication chip which is introduced by Nordic Semiconductor Inc of Norway. nRF9E5 has high performance, low power consumption, easy to apply and also embeds a high-performance 8051 SCM. Based on the GPRS wireless meter reading, this paper designs a wireless meter reading terminal using the short-haul wireless communication of nRF9E5, which is suitable for concentrative electric power users. The terminal includes the intelligent ammeter which is installed in electric power users and the relay device in regional center. The meter reading terminal collects the electric energy data using the appropriative electric energy measurement chip ADE7757, and classifies and calculates the data collected according to the"Peak","Peace"and"Valley"by the nRF9E5. The relay device obtains time the electric energy data of the intelligent ammeter used in rotation, and the communication between them is completed by the RF function of the nRF9E5.The wireless meter reading terminal based on nRF9E5 and GPRS of this paper studying takes full advantage of the resources of nRF9E5 and the primely performance of GPRS. The terminal has low production costs and low operating costs, so it is an automatic meter reading devices of good development prospects.