高频激光扫描测量线材外径系统

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High frequency laser scanning system for measuring wire diameter

ZHANG Changjiang1，SONG Jianyu1 ，WANG Chaoming²

（1.College ofscience，Shenyang LigongUniversity，Shenyang11ol59，China；2.Shenyang Dongkela

Technology Co.Ltd.，Shenyang 1100oo，China）

Abstract：To address the issues of detection accuracy and stability in rapid real-time measurement of tubular wire materials，a wire diameter measurement system with STM32 as the core controller was designed based on the CCD shadow method principle. The system employs a linear CCD sensor and two mutually perpendicular high-frequency laser sources with a maximum scanning frequency of 2 500 scans/s，enabling real-time capture of laser diffraction patterns. Leveraging STM32's data acquisition and processing capabilities，the system obtains the outer diameter dimensions of measured wires. It also features an RS-485 communication interface for real-time display of measurement data on a PC terminal or TFT touch screen. Test results demonstrate that the prototype achieves a measurement accuracy error of ±3μm for wire diameters ranging from 15 to 24mm while maintaining high-precision measurement stability during prolonged operation. This wire diameter measurement system enables fast and accurate real-time monitoring of large-diameter tubular wire materials， providing a reliable measurement solution for related application fields.

Key words： real-time measurement；CCD shadow method； sweep frequency；line diameter measurement;CCD sensor

激光检测技术近年来在工业检测领域备受关注，其非接触式的测量方式突破了过去主要以机械接触和物理接触为主的传统方法。（剩余5819字）