ARM舱底水油份浓度报警装置的设计与实现
毕业论文关键词:水油份浓度，15PPM 报警，双通道采集与转换，STM32
Abstract With the development of world’s shipping industry, the marine pollution causedby the shipping industry tends to be more serious. However, luckily, people’s attentionto environmental protection is boosting. Relevant conventions were issued byInternational Maritime Organization in 1973 and 1978. Conventions regulated sewageemission clearly. And it led to more advanced and greener technology developmenttide of ship equipments. Obviously, on this upgrading and replacement journey,computer plays an irreplaceable role. Currently, the imbedded technology at the coreof computer science is gradually emerging and becoming the research hotspot forupgrading the ship equipments.This paper attempts to propose a more concise and accurate alarm device todetect bilge water’s oil content so as to prevent it from polluting the marine ecologicalenvironment. The device adopts the dual-channel ray acquisition method for mutualcompensation to reduce the impact of changes in the external environment to thesensor. Moreover, the ratio of infrared reflection-transmission which is the low-costand precise method is applied to detect the oil content.As far as hardware is concerned, the device mainly contains 7 modules: sensor,transmitting circuit, receiving circuit, amplifying and filtering, dual-channel A / Dconverter, LCD and alarm. It designs and commissions each functional moduleseparately.After that, it combines them to realize the detection alarm function.Second, for software, it carefully introduces the application of ARM SeriesSTM32 small development board with Cortex-M3 as the micro-kernel. Relevantprocedures need be programmed: dual-channel A/D sampling converter, LCD module,alarm module, driving of STM32 IOS-MINI standard interface. Through theseprograms, the equipment realizes the overall operation and accurately detects the oilcontent of the bilge water. Finally, the principium model is designed by combining hardware and softwareand then commission is carried out. In terms of the design principle and operatingresults, the designed device in the paper boasts high feasibility and practicality.