Abstract: In order to overcome the shortcomings of automatic meter reading such as high cost, low efficiency, low reliability and inconvenient maintenance, a wireless remote intelligent meter reading scheme has been proposed. Through a wired LAN formed by RS-485, a wireless LAN by nRF24L01 and a wireless WAN by GPRS, a two-way communication has been achieved between the local data acquisition device and remote data center, which makes possible for automatic data acquisition, data transmission and data processing, and achieves the purpose of intelligent acquisition and management. The test results show that the system basically implements the intelligent remote meter reading function with the advantages of low cost, high efficiency, high speed, real-time, high reliability, strong portability, good application prospect and practical value.

Key words: automatic meter reading, nRF24L01, GPRS, wireless communication, two-way communication