In order to solve the monitoring problem of opaque fine-wire（ enameled wire, etc）, the laser-scanning diameter measuring gauge is designed to realize the rapid real-time monitoring to this wires. The optical meas- uring system of ＂standard-rod method＂, the grouping strategy, and FPGA ＆ ARM controller are adopted by this diameter-measuring gauge to achieve its rapid real-time monitoring. Test results show that the gauge has the function of real-time display of measured data through the network serial port in PC with its measuring range from 0...
