嵌入式便携心电监护仪的功耗降低方法研究

Research on power consumption reduction in designing portable ECG monitor based on EMPU

在嵌入式便携智能仪器的设计中,降低功耗是其核心技术之一.以嵌入式便携心电监护仪的设计为例,给出了降低功耗的一些方法和它们的具体实现.这些方法包括:合理选择器件、运用最小元件集的概念设计系统、抑制系统的冗余行为、以软代硬、合理安排存储器的结构、合理安排译码器和模数转换器的工作方式、合理安排系统工作方式和程序的运行方式.经验证,这些方法能有效降低嵌入式便携心电监护仪的整机功耗,也可用于其他嵌入式便携智能仪器的设计.

The power consumption reduction is one of the core techniques in designing the portable intelligence instruments based on embedded microprocessor unit (EMPU). Through the case in designing the portable ambulatory ECG monitor based on EMPU, this paper presents the power consumption reduction methods and their application. These methods include electronic device selection; system design by the concept of minimum set of components, redundancy-restraining technique, software application for hardware; appropriate structure of memory; proper pattern of decoder and A/D converter working; proper pattern of system working and program running. Experimental results indicates that it reduces power consumption effectively. And it can be applied to the design of other portable intelligence instruments based on EMPU.