本文選題：樹莓派　切入點：多參數(shù)水質(zhì)檢測儀　出處：《重慶大學》2015年碩士論文　論文類型：學位論文

【摘要】：水質(zhì)檢測是水資源保護與治理的必要手段,多參數(shù)水質(zhì)檢測是近年來水質(zhì)檢測裝備發(fā)展的重要方向之一。多參數(shù)水質(zhì)檢測儀的測控系統(tǒng)設計是實現(xiàn)儀器智能化、自動化、網(wǎng)絡化的核心技術,是保障儀器穩(wěn)定運行和自動化測量的關鍵,具有重要的實用化意義。論文針對重慶大學微系統(tǒng)中心前期研制的多參數(shù)水質(zhì)檢測儀測控系統(tǒng)存在的不足,在分析該多參數(shù)水質(zhì)檢測儀的結構和工作原理基礎上,結合當前水質(zhì)檢測儀器發(fā)展趨勢,提出了以樹莓派為控制核心的多參數(shù)水質(zhì)檢測儀測控系統(tǒng)升級方案,完成了測控系統(tǒng)樣品反應檢測模塊、光學模塊、順序進樣模塊、設備自監(jiān)測模塊、電源管理模塊、樹莓派嵌入式控制平臺等的軟硬件設計;完成了測控主板的系統(tǒng)設計、制板、調(diào)試;搭建了儀器測試平臺,完成了測控系統(tǒng)各個功能模塊的調(diào)試,進行了儀器流路系統(tǒng)清洗、六價鉻濃度測試等相關實驗,實驗結果表明,以樹莓派為控制核心的多參數(shù)水質(zhì)檢測儀測控系統(tǒng)具有較強的可拓展性、穩(wěn)定性和可靠性,完全滿足儀器實用化需求。論文主要研究內(nèi)容:①研究分析了水質(zhì)檢測儀器國內(nèi)外研究現(xiàn)狀,分析了實驗室前期研制的多參數(shù)水質(zhì)檢測儀測控系統(tǒng)存在的不足,結合水質(zhì)檢測儀器發(fā)展趨勢,確定了測控系統(tǒng)總體優(yōu)化升級方案;②在了解多參數(shù)水質(zhì)檢測儀的結構和工作原理基礎上,詳細地分析了原儀器測控系統(tǒng)各功能模塊存在的問題,優(yōu)化了樣品反應檢測模塊、光學模塊、順序進樣模塊的不合理設計,提出了嵌入式控制平臺和設備自監(jiān)測模塊的具體優(yōu)化方案;③完成了測控系統(tǒng)各功能模塊設計,實現(xiàn)了樣品反應檢測模塊氣泡攪拌、清洗、恒溫、排廢等功能,增加了氣泡攪拌力度切換功能,實現(xiàn)了進樣模塊控制,完成了設備自監(jiān)測模塊硬件設計,實現(xiàn)了泄漏實時監(jiān)測、斷電保護、溫度實時監(jiān)測等功能;④完成了基于樹莓派的嵌入式控制平臺搭建(包括開發(fā)環(huán)境建立、wiring Pi集成庫開發(fā)、觸摸屏擴展、遠程控制等),通過樹莓派板載GPIO、USB、I2C等接口實現(xiàn)了對測控系統(tǒng)硬件資源的控制;⑤完成了測控系統(tǒng)主板調(diào)試,搭建了儀器測控平臺,完成了對測控系統(tǒng)各個模塊的聯(lián)合調(diào)試,開展了流路系統(tǒng)清洗實驗和六價鉻濃度測試實驗。
[Abstract]:Water quality detection is a necessary means for water resources protection and management, and multi-parameter water quality detection is one of the important directions in the development of water quality inspection equipment in recent years. The design of measuring and controlling system of multi-parameter water quality detection instrument is to realize the intelligent and automatic instrument. The core technology of the network is the key to ensure the stable operation of the instrument and the automatic measurement, and has important practical significance. The paper aims at the shortcomings of the multi-parameter water quality measuring and controlling system developed by the micro-system center of Chongqing University in the early stage. On the basis of analyzing the structure and working principle of the multi-parameter water quality detector, combined with the development trend of the current water quality detection instrument, a scheme of upgrading the measuring and controlling system of the multi-parameter water quality detector with raspberry pie as the control core is put forward. The hardware and software design of sample response detection module, optical module, sequential sampling module, equipment self-monitoring module, power management module, raspberry pie embedded control platform and so on are completed. The instrument testing platform was built, the debugging of each functional module of the measurement and control system was completed, and the relevant experiments such as cleaning the instrument flow path system and testing the concentration of hexavalent chromium were carried out. The experimental results show that, The measurement and control system of multi-parameter water quality detector with raspberry pie as the control core has strong expansibility, stability and reliability. The main research content of this paper is: 1. The current research situation of water quality testing instruments at home and abroad is analyzed, and the shortcomings of the multi-parameter water quality measurement and control system developed in the early stage of laboratory are analyzed. According to the development trend of water quality testing instruments, the overall optimization and upgrading scheme of measurement and control system is determined. On the basis of understanding the structure and working principle of the multi-parameter water quality detection instrument, the problems existing in each functional module of the original instrument measuring and controlling system are analyzed in detail. The unreasonable design of sample response detection module, optical module and sequential sampling module is optimized. The specific optimization scheme of embedded control platform and equipment self-monitoring module is put forward. The function modules of the measurement and control system are designed. The functions of bubble stirring, cleaning, constant temperature and waste removal of sample reaction detection module are realized, the switching function of bubble stirring force is added, the control of sample injection module is realized, the hardware design of equipment self-monitoring module is completed, and the leakage real-time monitoring is realized. Power failure protection, real-time temperature monitoring and other functions have completed the building of an embedded control platform based on raspberry pie, including the development of the development environment, the development of the integrated library of wiring Pi, the expansion of the touch screen, and the development of the embedded control platform based on raspberry pie. Remote control and so on, through the interface of Raspberry pie board GPIOO USBU I2C, the main board debugging of the measurement and control system hardware resources has been realized. The instrument measurement and control platform has been set up, and the joint debugging of each module of the measurement and control system has been completed. The flow system cleaning experiment and hexavalent chromium concentration test were carried out.
【學位授予單位】：重慶大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X853

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