在工業線材生產中，線材直徑測量是非常重要的環節，為了提高在線測徑的效率，設計
了基于ARM、光學系統和CCD 的在線測徑系統。通過ARM 處理器驅動CCD 并對CCD 的輸出信號進行處理，實現對線材直徑的在線高速測量。利用μC/OS-?? 嵌入式實時操作系統，提高了系統的擴展性和穩定性。該系統具有檢測速度快、可靠性高和非接觸測量等優點。
關鍵字：ARM 處理器；CCD；在線測徑；μC/OS-??
Abstract: In the industrial production of wire rod, wire diameter measurement is a very important part. In order to improve the efficiency of on-line diameter measurement, it designs an on-line diameter measurement system which based on the ARM, optical system and CCD. Through the ARM processor drivers the CCD and processes deferent signal of the CCD, it implements the high-speed on-line measurement of the wire diameter. The applications of μC/OS-?? embedded real-time operating system improve the scalability and stability of the system. The system has many advantages such as fast detection, high reliability, non-contact measurement and so on.
Key words: ARM processor; CCD; online diameter measurement; μC/OS-??