传统的工业控制系统中主要以PLC和DCS作为控制设备，但是PLC和DCS的控制成本高、实时性差的缺点使得它们难以满足飞速发展的现代工业对控制系统的需求。而嵌入式控制系统以其成本低、性能高、实时性好的优势在工业领域的应用不断扩大，设计了基于嵌入式的工业控制系统，包括模块化的数据采集系统、蓝牙通信系统和以ARM9为主控制器，在Linux操作系统下通过Qt4编程完成一款工控GUI．模块化的数据采集系统对采集的数据进行放大、线性化、滤波等处理后，再经过C8051单片机进行A／D转换后通过蓝牙通信技术传输给主控制器进行数据处理并将处理完成的数据通过总线返回给工业现场。试验证明，该控制系统对数据处理的精度高，速度快，实时性好，可以满足工业现场的应用需要。%Traditional industrial control system mainly use the PLC and DCS as the control equipment , but the high control cost and bad real time make them difficult to meet the requirements for the control system of the development of modern industry . However , the embedded control system is widely applied in industrial field as its low cost , high performance and good real-time performance advantages .We designed an industrial control system based on embedded system ,including data acquisition system , communication system based on Bluetooth module , and with ARM9 as the main controller completed an industrial GUI through Qt 4 programming under Linux operating system. The data collected data were amplified , linearized, and filtered by the acquisition sys-tem of modular, then after A/D conversion of C8051, transferred through the bluetooth communication technology to the main con-troller for data processing and the processed data get back to the industrial field through bus .Tests prove that the software for data processing is of high precision , fast speed , good real-time performance and can meet the requirements of industrial application .
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