矿用多气体浓度检测系统的研究与设计

发布时间：2018-06-21 03:18

本文选题：多参数检测 + 传感器阵列　；参考：《南京航空航天大学》2017年硕士论文

【摘要】：工业开采过程中,会产生可燃、有毒有害气体,它们的出现会引起爆炸和人员中毒伤亡事故,严重危害着工作人员和周围民众的人身安全,如何有效、准确地监测工作环境安全状况成为了关键问题,同时随着当前环境监测不断提高的需求,开发一款功能多样的环境检测设备显得十分重要。本文依据实际需求,提出一种集移动检测、无线数据传输和远程监测为一体的多气体浓度检测系统,该系统由便携终端检测仪、无线传输系统和上位机系统三个部分构成。本文以工业环境安全监测为对象,首先阅读了大量文献,针对现役检测设备存在技术落后等缺陷,分析了矿井等工业环境中气体的特征和危害,对先前学者提出的设计方案进行了深入研究并进行了改进,提出了拟设计系统的需求、性能、参数指标和实现方案,同时研究对比了成熟的气体传感技术,选用了合适的检测方法。然后,以同时兼顾性能和低功耗的设计理念,分模块完成了系统的开发。硬件部分,终端检测仪选用STM32F103作为主控芯片,采用了红外吸收和电化学原理的气体传感器阵列对被测环境中多种参数(CH_4、CO_2、CO、O_2、C_2H_2、C_2H_4、温湿度)进行检测,设计了调理、显示、存储、报警等外围功能电路;同时为了解决恶劣环境下无法进行有线传输等问题,将Zigbee无线传输技术应用到环境监测中,对无线传输系统各个节点电路进行了设计。软件部分,针对检测系统需要实现的功能进行了编程,完成了终端设备所需的采集、显示、按键等程序的设计,同时对检测数据进行曲线拟合处理,提高系统测量准确度;设计了无线传输软件系统,完成各个设备和节点之间的通信;基于Labview平台设计了上位机系统,便于管理人员对环境进行监测。最后,对整个系统进行了联机调试,并通过实验,验证了系统的采集、显示、声光报警、无线传输和上位机系统动态监测等性能。结果显示,系统运行正常,各项指标都符合设计要求,能够很好地获取环境信息,同时远程监测能力也使检测系统具有良好的实用价值。
[Abstract]:In the process of industrial exploitation, flammable, toxic and harmful gases will be produced. Their appearance will cause accidents of explosion and poisoning, and seriously endanger the personal safety of the workers and the people around them. How to be effective? It has become a key problem to accurately monitor the working environment safety. At the same time, with the increasing demand of environmental monitoring, it is very important to develop a kind of environmental detection equipment with various functions. According to the actual demand, this paper presents a multi-gas concentration detection system which integrates mobile detection, wireless data transmission and remote monitoring. The system consists of portable terminal detector, wireless transmission system and upper computer system. Taking industrial environmental safety monitoring as an object, this paper first read a large number of documents and analyzed the characteristics and harm of gas in industrial environment, such as mines and mines, in view of the defects of the existing testing equipment, such as technical backwardness. The design scheme proposed by previous scholars has been deeply studied and improved, and the requirements, performance, parameter index and implementation scheme of the pseudo design system have been put forward. At the same time, the mature gas sensing technology has been studied and compared. A suitable detection method was selected. Then, with the design idea of considering both performance and low power consumption, the system is developed by modules. In the hardware part, the terminal detector selects STM32F103 as the main control chip, and adopts the gas sensor array based on infrared absorption and electrochemical principles to detect the various parameters in the measured environment, such as CH4C2C2C2COT, COSP, C2C2H2C2H4 (temperature humidity), and designs the adjustment, display, storage, At the same time, Zigbee wireless transmission technology is applied to environment monitoring to solve the problem of cable transmission in bad environment, and each node circuit of wireless transmission system is designed. In the software part, the functions of the detection system are programmed, and the acquisition, display and key of the terminal equipment are designed. At the same time, the curve fitting of the test data is carried out to improve the accuracy of the system. The wireless transmission software system is designed to complete the communication between each device and nodes, and the upper computer system is designed based on LabVIEW platform, which is convenient for managers to monitor the environment. Finally, the whole system is debugged online, and the performance of the system such as acquisition, display, acousto-optic alarm, wireless transmission and dynamic monitoring of upper computer system is verified by experiments. The results show that the system runs normally and all the indexes meet the design requirements, and it can obtain environmental information well. At the same time, the ability of remote monitoring also makes the detection system have good practical value.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD711

【参考文献】