摘要
为了实现嵌入式虹膜识别系统的稳定工作,提出了一种基于软件关机电路的电源系统设计方案,并完成系统的硬件设计。该系统的硬件设计主要分为全局电源,内核电源和I/O模块电源3大部分,能够满足虹膜识别系统的所有器件功耗需求。实际应用表明,该电源具有软件可操作性,能够使TMS320DM6446内核达到长期且稳定工作的特点,满足了设计需求。
In order to make sure that the embedded iris recognition system work stable, the power system based on Software shutdown circuit is designed in this paper, and it has been implemented in hardware. The hardware system was comprised of three parts, global power network, the kernel power network and I/O power network, which can supply enough power for all the equipments. The experiment and application show that this power supply system can be controlled by the software, and have a good performance that the TMS320DM6446 kernel can work stable with it, so this system has meet the design requirement.
出处
《电子设计工程》
2014年第7期150-153,共4页
Electronic Design Engineering
基金
国家自然科学基金(60472046)
