| Intelligent nuclear instrument has been a dominant developing direction of radioactivity measurement instrument, and has far-reaching impact on the fields such as applied nuclear techniques, international nuclear safety, weapon inspection, national defence engineering and scientific test.As a nuclear instrument, multi-channel analyzer(MCA)is mainly applied to nuclearlogging, γ -ray spectrum measurement and X-ray fluorescence measurement, which arebased on nuclear spectrum analysis.Measuring technology of Multi-Channel is the foundation of matter composition and radioactivity verifying by way of nuclear methods. The dissertation aims at developing tendency of measuring technology of Multi-Channel nuclear energy spectrum, focusing on systematically research on some key techniques such as the design of Multi-Channel Analyzer(MCA)and apparatus, with a view to resolve defects existing in current portable apparatus. The dissertation discusses about field Multi-Channel nuclear data collecting system based on MCU in detail. The data collecting system adopts MCU (Micro-Control Units) AT89C55 as controlling core, applying high speed and low power ADCs(Analog-to-Digital Converters)CMOS chip MAX191. According to the requirements of design, the system apply MCU 8279 to extend 16Keyboards, and meantime the system can use battery which can be recharged to supply power. As a whole, the system characteristic of inputting by keyboard. What's more, the system can communicate with other computers by the interface of RS-232C.Software system is written by various programme languages C Language and Assemble Language. The software system make use of virtues of multi-language mixed Programming technique fully, which make it can do well in either timely handling or handling data convenently.
|
PDF Full Text Request