Design of Remote Meter Monitoring System Based on MCU Control

摘要

According to the requirements of meter reading in the station area, the design principle and remote communication scheme of the system are established, and the overall design scheme of the system is established. In view of the shortcomings of GSM communication, GPRS data communication scheme is adopted. According to the working principle of the system, the data acquisition, digital-analog conversion and data transmission processes are analyzed and studied, which improves the data transmission capability of the system. In the hardware design of the system, the main controller adopts AT89C51 8-bit MCU, serial communication includes RS-232, RS-485 and various communication interfaces. The design of sampling circuit combines filter circuit and phase-locked loop circuit, which effectively improves the accuracy of data acquisition and anti-interference ability.