矿用柴油机车保护监控仪的设计与开发

发布时间：2019-04-19 18:18

【摘要】：矿用柴油机车是一种燃烧油液的热动力设备,在有瓦斯煤尘爆炸、环境条件恶劣的矿井下使用,因此需要使用保护监控仪以提高安全性与可靠性。本文针对此需求,开发了具有监控参数多,精度高,可靠性高,易用性强等特点的全自动可视化矿用柴油机车保护监控仪。本文首先分析了国内外柴油机监控仪开发技术的概况、存在问题及本课题研究意义,明确本课题主要研究任务。接着本文分析了柴油机监控仪系统的总体结构,详尽地介绍了系统的工作原理以及系统方案的选择。本文设计制作的柴油机监控仪系统分为测量板、显示板、甲烷传感器和一氧化碳传感器这四个部分,论文对各部分的硬件电路设计进行了详细的阐述。测量板是以STM32单片机为核心,负责工况数据采集处理、工况数据存储、工况监测报警等功能。需要监测的工况有水温、表温、排温、油温、刹车油压、机油压力、油箱油位、水箱水位、引擎转速、车速、甲烷浓度、一氧化碳浓度等。显示板主要用于在LCD屏上显示监控的工况数据。显示板包括三个部分：以STM32单片机为核心的控制部分,用于控制LCD的显示内容和接收测量板的工况数据以及通过红外实现操作人员对工况参数的调整；以CPLD为核心的LCD驱动部分,配合SRAM作为显示缓存,实现对LCD的控制显示；以视频解码芯片MST703为核心的视频解码部分,用于将倒车视频信号解码成数字RGB信号以便在LCD上显示。甲烷传感器以STM32单片机为核心,通过MJC4／3.0L型催化燃烧式气敏元件来检测甲烷气体浓度,并将检测结果实时发送给测量板。一氧化碳传感器也是以STM32单片机为核心,通过4cm敏感元件来检测一氧化碳气体浓度,并将检测结果实时发送给测量板。接着本文完成了矿用柴油机车保护监控仪系统的软件设计。主要包括对各类工况采集处理的软件流程、工况数据存储的软件流程、各子系统相互之间的通信设计、报警处理的软件流程、LCD界面显示驱动部分的软件流程、LCD界面显示控制部分的软件流程、视频解码并显示的软件流程、甲烷浓度采集处理的软件流程、一氧化碳浓度采集处理的软件流程等。最后,在完成软硬件设计的基础上进行了系统的调试工作,对工况检测、通信、LCD显示驱动及功能界面都进行了详细的测试,确保满足系统的设计需求。
[Abstract]:Mine diesel locomotive is a kind of thermal power equipment for burning oil, which is used in coal mine with gas and dust explosion and bad environmental conditions, so it is necessary to use protection monitor to improve safety and reliability. In this paper, a fully automatic visual mine diesel locomotive protection monitor with the characteristics of multi-parameter monitoring, high precision, high reliability and easy to use is developed. Firstly, this paper analyzes the general situation, existing problems and research significance of diesel engine monitor at home and abroad, and clarifies the main research tasks of this topic. Then this paper analyzes the overall structure of the diesel engine monitor system, and introduces the working principle of the system and the selection of the system scheme in detail. In this paper, the diesel engine monitor system is divided into four parts: measuring board, display board, methane sensor and carbon monoxide sensor. The hardware circuit design of each part is described in detail. The measuring board is based on STM32 singlechip, which is responsible for collecting and processing working condition data, storing working condition data, monitoring and alarming working conditions, and so on. The operating conditions to be monitored are water temperature, surface temperature, exhaust temperature, oil temperature, brake oil pressure, fuel tank level, tank water level, engine speed, methane concentration, carbon monoxide concentration, etc. The display panel is mainly used to display the monitored working condition data on the LCD screen. The display board consists of three parts: the control part based on STM32 single chip microcomputer, which is used to control the display content of LCD and receive the working condition data of the measuring board, and realize the adjustment of working condition parameters by the operator through infrared; The LCD driver with CPLD as the core and SRAM as the display cache can control the display of the LCD, and the video decoding part with the video decoder chip MST703 as the core is used to decode the backward video signal into a digital RGB signal for display on the LCD. The methane sensor is based on STM32 single chip microcomputer. The methane concentration is detected by MJC4/ 3.0L catalytic combustion gas sensor, and the detection results are sent to the measuring board in real time. Carbon monoxide sensor is also based on STM32 singlechip, and uses 4cm sensor to detect the concentration of carbon monoxide gas, and sends the detecting results to the measuring board in real time. Then this paper completes the software design of the mine diesel locomotive protection monitor system. It mainly includes the software flow of collecting and processing all kinds of working conditions, the software flow of working condition data storage, the communication design between the subsystems, the software flow of alarm processing, the software flow of the driving part of LCD interface display. The LCD interface shows the software flow of the control part, the software flow of video decoding and display, the software flow of methane concentration acquisition and processing, the software flow of carbon monoxide concentration collection and processing, and so on. Finally, on the basis of the hardware and software design, the debugging of the system is carried out, and detailed tests are carried out to test the working condition detection, communication, LCD display driver and functional interface to ensure that the system can meet the design requirements of the system.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD67

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