INTELLIGENT ELECTRIC METER CENTRALIZED RECHARGING TERMINAL AND CONTROL METHOD THEREOF

摘要

An intelligent electric meter centralized recharging terminal comprises an IC card interface circuit, an ESAM module circuit and two groups of RS485 communication module interface circuits. The IC card interface circuit is connected with a CPU via ICREST and ICIO data pins, the ESAM module circuit is connected with the CPU via data and reset pins SAMIO and SAMRST directly. The two groups of RS485 communication module interface circuits are respectively connected with the CPU, so as to realize communication with an intelligent electric meter and a collector, and monitor communication data between the collector and the electric meter in real time and forward the data. The IC card interface circuit completes communication with user card interfaces. The ESAM module circuit completes data exchange and reset operations and various safety certification operations such as encryption, decryption and operation. A program module for the intelligent electric meter centralized recharging terminal ensures the normal communications of the system.