基于EM78P458单片机的超低功耗数据采集器设计

介绍了以EM78P458单片机为核心的数据采集器的工作原理、硬软件设计方法。从降低功耗出发,采用零功耗磁敏传感器作为数据采集传感器,单片机平时处于休眠状态,只有当数据采集、测量数据显示查阅、数据远传时才通过中断唤醒单片机工作,实现了超低功耗系统设计,并给出了系统的实测功耗。通过扩展串行通信口与上位机通信,实现采集数据的远传。具有成本低、功耗低、精度较高、性能可靠等特点,适用于远传抄表系统中的数据采集。

Data collector with ultra-low power consumption based on EM78P458 single chip microprocessor

The data collector with the EM78P 458 single chip microprocessor as its kernel is introduced in its operation principle,hardware and software design.The magneto-dependent sensor with zero power consumption is adopted to reduce the power loss.The single chip microprocessor is usually at dormant state and only awakened by the interruption for the data acquisition,the measured data display and the data remote transmission for realizing the ultra-low power consumption design.Measured power consumptions are offered.The collector communicates with the host computer via expanded serial ports for remote data transmission.It has low cost and power loss,high precision and reliability,and is suitable to the data collection in remote meter-reading systems.