基于PIC的主从设备间智能加密锁系统设计

The design for intelligent encryption system between master and slave devices based on PIC

为实现工业上位机与从设备之间的使用时间权限检查以及通讯环节加密,设计出以PIC16F877A单片机为处理核心,DS12C887实时时钟芯片为时间的基准,并采用EPM7064STC44-10N CPLD作数学逻辑处理主从设备智能加密锁系统,防止设备被非法互换,保障设备生产企业的合法权益。

To realize the lime limit checking and communication encryption of the industrial master and slave devices ,this paper discusses a intelligent eneryption lock system based on PIC 16F-g77A MCU. The system uses DS 12C887 RTC-chip as time basis and uses EPM7064STC44-ION CPLD to process mathematical logic.