摘要
IEEE1451标准提出了一种通用的传感器接口标准,解决了传统传感器与各种网络相互不兼容的问题。本文以IEEE1451标准中IEEE1451.1和IEEE1451.2标准为基础,利用基于ARM Cortex技术的STM32微处理器多功能端口进行IEEE1451各功能模块的标准接口设计。包括在单只芯片中设计信号采集、处理和转换的A/D、CTC等前向通道,PWM、D/A、GPIO等构成后向通道,以及运用片内FLASH设计电子数据表单TEDS,并组成为智能变送器接口模块STIM。运用STM32丰富的串行总线接口,直接扩展CAN、RS232、RS485等现场总线以及10/100M的工业以太网络接口,组成网络匹配处理器NCAP模块。
A kind of general standard of sensor interface is advanced in IEEE1451 standard,which can solve the problems of incompatibility among different sensors.In this article,based on the IEEE1451.1 standard and IEEE1451.2 standard in IEEE1451 standard,the multifunctional ports of STM32 microprocessor with ARM Cortex technology are used to design the standard interface of IEEE1451 function modules.On the one hand,based on the design of forward channel including A/D and CTC etc.with the functions of signal sampling,processing and converting,backward channel including PWM,D/A and GPIO and TEDS（Transducer Electronic Datasheet,TEDS） with on-chip FLASH,the STIM￡＇＇ Smart Transducer Interface Module,STIM￡＇ is composed in a single chip.NCAP（Network Capable Application Processor,NCAP） is formed by the extending of field bus such as CAN,RS232 and RS485 and 10/100 M industrial Ethernet interface with the enough serial bus interface of STM32.
出处
《自动化与仪器仪表》
2011年第1期37-39,共3页
Automation & Instrumentation
基金
重庆市科技攻关计划支持项目(CSTC
2009AB2133)资助
重庆市教委项目(KJ100709)
