可任意编程的时间控制系统的设计与实现

Design and realization of programmable logic timing control system

可任意编程的时间控制系统是基于89S51系统开发的,系统硬件、软件均采用模块化结构设计.同以往的时间控制系统相比,设计思想更贴近用户,可广泛应用于地质探测、广告控制、校园铃声系统等场合.系统具有在系统编程,调整、维护、升级等操作更加简便易行.系统显示采用12864LCD,用户界面友好,定时存储采用I2C总线技术,掉电不需要重新设置,输入控制灵活.较详细的给出了电路原理图及程序框图.

Based on the 89S51 system, the programmable logic timing control system is developed, and its hardware and software use the structural module design. Compared with former timing control systems, its design concept draws closer to the user, which makes it widely used in the geological survey, the advertisement control, the campus ring system and so on. Its adjustment, maintenance and upgrade is more easier due to its in-system programming. The system display uses 12864LCD, and the user interface is friendly. The timing storage uses I^2C bus technology,which makes the reset unnecessary when power-down, and its input control is flexible. The circuit schematic diagram and the program chart are shown in detail.