Design And Acomplishment Of Detection And Acquisition System For Detection Of Rope Belt

With the rapid development of economy and society, the energy industry has beenrapid developed. Steel cord conveyor system has been widely used in large transportequipment of coal, metallurgy, port, electricity and other departments. Such devicesown characteristics of large angle, high speed, large capacity and further distanceTransmission and so on, which make it the main tool for coal transportation. This typeof conveyor belt is composed of several belts’ overlapping and vulcanization. Thereforejoints are weaknesses of belt, which is easy to break. What’s worse, with the poorworking conditions, such as low temperature in the mine environment, high humidityand load, internal steel cord conveyor belt is easy to break, twitch and rust, etc.Occurrence of the above will bring about serious accidents causing economic losses andcasualties, so the development of real-time, effective detection techniques can not wait.In this paper, X-ray detection technology was adopted to develop a kind of detectorfor powerful conveyor belt NDT system. Principle of X-ray NDT was analyzed anddesign of detector for strong conveyor non-destructive testing system was proposed.Altera’s FPGA chip EP1C3T was selected as the main chip, linear array detector array(Linear Detector Array referred LDA) was produced by the U.S. OIS, using a recentlydeveloped X-ray scintillator material CsI, which can quickly form images, moresuitable for rapid detection and applied only to objects moving. The system can bedivided into receiving unit of X-ray sensor, A\D converter unit, data processing unit.A\D conversion unit used a A\D converter chip DDC264, which was the first usagedomestic. The data processing module used FPGA to combine; package and store thedigitized signal that for transmission.In terms of digital logic design, top-down design ideas was used with VHDL languageprogram, completing the timing control to DDC264in acquisition module, RAM caching,command parsing, logic design of I2C bus. At the same time with the softwareQuartusII9.1, compilation, synthesis, simulations were completed. In commissioningphase signal observation was completed through the SignalTap II making the logicdesign more perfect.