张真真外文文献翻译.doc

2013届 　　　　　　　　　　　　　　　　　 毕业设计 外文文献翻译 　　　　　　 姓 名　 　　　　 张　真　真　　　　 　　　　　　 学 号　　　Intelligent Robot pipeline inspection We have developed a test for small-calibre oil pipeline smart pipeline inspection robot that uses ultrasound to the principle of residual oil pipeline wall thickness was detected, the entire inspection system into the intelligence within and outside of the two most. The aircraft are small, flexible movements, power, the pipe is not sensitive, there is no specific thickness of the ceiling, high precision, without checking, and other characteristics, reached a basic long-distance pipeline in service testing requirements. 1 Principle Figure 1 shows the basic principles of ultrasonic testing Ultrasound probe placed within the pipe measured, and the direction perpendicular to the wall to wall launch broadband ultrasonic pulse. First to receive the probe by the pipeline wall reflection back to the pulse, which can be measured with the probe inside the distance between A; then, to receive from the probe to the outer reflection pulse through, the time difference echo wall to wall thickness calculation B. A height of the curve shows that the depth of internal defects, the height of the curve B will be to determine the actual wall thickness. When the wall when defective, A, B curve of a mirror symmetry, and the outer wall defects have no impact on the A curve, therefore, of A, B combination can be distinguished, the outer wall defects. 2 Detection Development of the ultrasonic testing machine by the traction module, detection module and power module components, they were placed equipment, power, electrical and other components. Pressure from the high temperature of the body made of materials between each other and send signals to the universal adoption of flexible coupling connected to facilitate change. Detection module and power module and exposed to external plugs, sockets and wiring have all ta