安全检测：瑞星：安全 诺顿：安全 卡巴：安全
【摘要】 随着柴油机向高速、高功率的方向发展,柴油机产生故障的可能性也随之增大。机旁监测报警系统可实现对柴油机运行工况的实时监控,对可能产生故障的安全隐患进行报警和适当干预,避免柴油机产生故障而造成重大事故。因此,研制具有自主知识产权的船舶柴油机机旁监测报警系统具有十分重要的意义与工程实际价值。主要研究内容和结论如下：1.总体分析了船用中速柴油机机旁监测报警系统。解析了整体系统结构,对BM模块、OB模块、MTP模块和MEG模块的功能进行了详细分析说明,设计了各模块间基于RS-485总线的通讯协议。2.细致描述了BM模块的软硬件设计。选择STM32系列32位单片机作为核心处理器,对BM模块周边硬件电路设计进行了说明,详细分析了在这种硬件组成下,以及实现BM模块复杂功能的软件结构。3.设计和开发了OB、MTP、MEG模块。基于操作和显示模块功能,选择XC800系列单片机为核心控制器,针对显示功能选择74HC595做光源驱动,设计硬件电路；对各模块编写软件程序,高效地完成自身按键、通讯和显示功能。4.拓展了中速柴油机机旁监测报警系统的瞬时转速故障诊断功能。研究了瞬时转速测量方法,在现有硬件基础上,设计了适合于瞬时转速测量方案,包括硬件配置和软件处理方法。5.完成了船舶柴油机机旁监测报警系统的试验验证。分别在NI虚拟测试平台和MAN B & W6L16/24型中速柴油机上对安全监测报警系统进行了功能性验证,结果表明：系统工作稳定可靠,抗干扰能力强,达到了国外进口的同类型监控设备水平,实现了柴油机安全、稳定、可靠运行。
【Abstract】 As diesel engine is developing toward the high-speed and high-power, its possibility of failure is increased gradually. The working process of the diesel engine is monitored on line by a local monitoring and alarming system. The system can alarm the potential security risks and intervene appropriately to avoid the major fauts because of the engine malfunctions. Therefore, the development of the local monitoring and alarm system for the marine diesel engine with independent intellectual property is of great significance and value engineering. The major research contents and the results are shown below:1. The local monitoring and alarm system for marine medium-speed diesel is analyzed as a whole. The overall structure of the system is analyzed, and functions of Basic Modules (BM), Operation Box (OB), Monitor Temperature & Pressure (MTP) and Monitor Exhaust Gas (MEG) are described in detail. In addition, the communication protocol among modules based on RS-485 has been designed.2. The BM software and hardware are designed in detail. The peripheral hardware circuit of BM with its CPU of STM32 is illustrated, and the supporting software is also analyzed particularly.3. The modules of OB, MTP and MEG are designed and developed. According to the functions of the control and the display modules, the microcontrollers of XC800 family are used as CPU in these modules, and 74HC595 is used as the driver of light source, and the correlative circuits are designed. Then, the software of these modules is programmed, and their functions of keys, communication and display are completed effectively.4. The function of the fault diagnosis based on instantaneous angulare speed in the local monitoring and alarm system for medium-speed diesel is expanded. The measurement method of the instantaneous angular speed is investigated, and the method based on the existing hardware in this system is designed, including hardware configuration and software approach.5. The confirmatory tests for the local monitoring and alarm system are completed. The system is tested on NI virtual instrument and MAN B&W 6L16/24 medium-speed diesel engine. The results indicate that the system with strong interference capability is reliable, and reach the same level of the foreign import monitoring and control equipment. The diesel engine is worked in security, steadily and reliably under local monitoring and alarm system.
【关键词】 监测报警； 船用中速柴油机； 通讯协议； 系统研制；
【Key words】 Marine Medium-speed diesel Engine； Monitoring； Alarm； RS485；