A nondestructive detection system based on X-ray for wire ropes conveyer belt is designed by X-ray detection
technology. In this paper X-ray detection principle is analyzed, a design scheme of the system is presented; image
processing of conveyer belt is researched and image processing algorithms are given; X-ray acquisition receiving board
is designed with the use of FPGA and DSP; the software of the system is programmed by C#.NET on WINXP/WIN2000
platform. The experiment indicates the system can implement remote real-time detection of wire ropes conveyer belt
images, find faults and give an alarm in time. The system is direct perceived, strong real-time and high accurate. It can be
used for fault detection of wire ropes conveyer belts in mines, ports, terminals and other fields.
A novel design of micromachining-based high speed 1x2 optical switch array is presented. Employing a triangle-shaped micromachined mirror for beam directing, the design achieved a high level integration of multiple switches on a single substrate, significantly shortened switch time to below 1 ms. An array of four 1x2 switches was fabricated and the performance of the switch array prototype was reported, attaining a fast switch time of less than 750us, extremely low cross-talk <-70dB, an insertion loss of between 0.6 and 0.8 dB, and with an overall size of only 60×36×7 mm<sup>3</sup>. The experimental result was compared with that from a finite element analysis and a good agreement was obtained.