摘要
本文使用可编程技术、嵌入式微控制器及网络技术,介绍远程升级智能仪表的设计。该设计主要采用W78E516单片机、在系统电可编程模拟电路EPAC及数字电路EPDC构建智能仪表的升级硬件平台,详述了智能仪表实现远程硬件功能重构和系统升级的工作原理。重点说明了嵌入式智能仪表硬件和软件的设计方法,对系统远程升级的可靠性和保密性进行了论述。最后,对系统硬件和软件进行了测试,实验证明系统性能稳定、操作灵活,能可靠实现远程自动升级。
The remote-upgrade intelligent instrument is designed using in-system programming technology, embedded microcontroller and network technology. Upgrade hardware platform of intelligent instrument is constructed with W78E516 single-chip computer, in-system electricity programming analogue circuit EPAC and digital circuit EPDC. Remote-hardware function reconstructing and the system upgrade principle of intelligent instrument are described in detail. Hardware and software design methods are stressed; the reliability and keeping-secret of system remote-upgrade are discussed. The testing of hardware and software has been done and the experiment results show that system has the advantages of stable performance and flexible operation, and it could realize remote auto-upgrade.
出处
《电子测量技术》
2007年第2期125-128,共4页
Electronic Measurement Technology
关键词
单片机
ISP智能仪表
远程升级
single-chip microcomputer
ISP
intelligent instrument
remote-upgrade
