【摘要】 在全面分析了涡轮流量计测量原理的基础上,设计了一种基于HART总线的新型智能涡轮流量计。HART模块由AD421和A5191构成,详细阐述了其工作原理并设计了电路图。该系统以MSP430F147单片机为控制核心,采用软硬件结合的方法实现了流量的自动补偿。选用低功耗的外围扩展元器件,在实现了较高精度和可靠性的同时,最大限度地降低了整机功耗。更多还原

【Abstract】 It analyzed the measure elements of turbine flowmeter roundly,and introduced a new type of aptitude turbine flowmeter based on HART Bus.The HART module consisted of AD421 and A5191.The circuit of HART bus module was showed in detail.The design scheme used MPS430 as the central controller and combined the software and hardware which achieved the flux compensates of oneself.It chose the other ultra-low-power external chips,achieved high precision and dependability,meanwhile,reduced the system power.更多还原