【作者】 王榜军；

【导师】 于晓洋；

【作者基本信息】 哈尔滨理工大学 ， 测试计量技术及仪器， 2003， 硕士

【摘要】 本文将计算机技术、通信技术、传感技术、控制技术和故障诊断技术等应用于供热网站监控管理系统，论文主要工作如下：参考有关文献资料，在充分了解我国供热站现状的基础上，分析其特点，指出现有供热站存在的弊端，提出供热系统的发展方向。根据供热系统的发展方向，设计出一套适合我国使用的供热网站监控管理系统方案。为了便于分散控制，集中管理，采用分布式微机控制系统。整个系统采用多种传感器进行在线检测，中心站主机进行实时数据分析并生成控制命令，分站主机通过电磁阀等进行实时控制。电流传感器、电压传感器、流量计等相应的硬件，不仅满足系统的各种功能，而且符合经济性的要求。系统是连续工作的，要求具有较高的可靠性，因此系统中设计了故障报警系统，按照故障的不同类型将报警分级，以便对不同故障、故障的不同级别，采取不同的措施。同时，为避免虚警和漏警，对系统采取自检功能，其中传感器及电机等都采用相应的自检方式，确保整个系统能安全有序地工作。而且，设计过程中采用了故障注入系统。系统采用微波通信技术解决信息传输的难点，从天线高度设计、冗余法差错控制，循环码制选择等方面保证通信的可靠性，采用冲突避算法防止通信冲突，使系统有序地进行工作，并充分地利用了通道，也提高了工作效率。为便于操作，设计了简洁的界面，通过人机对话来实现对系统的各种操作。与此同时，对重要的操作，如控制等，系统设置了密码、确认等功能，避免了因疏忽而发生的误操作。更多还原

【Abstract】 In this dissertation, the technology of computer, communication, sensor, control and diagnosis is applied to the heat providing system. The author refers a large amount of material, and points out the shortcoming of the heat providing system based on the knowledge of the existing system. The author also presents the development direction of the heat providing stations. According to the above, the author designs a heat distribution system suited for our country’s condition.In order to realize distributed control and concentrated administration, the author uses distributed computer control system. The whole system uses some sensors to obtain the measurement data and to send out the control commands. The computer is used in the distributed station to control the system by valves. Equipped with the corresponding hardware, the system not only matches the various functions, but also fits the requirement of economization.The system is working continuously, and needs high reliability. Thus the author designs a malfunction system in which different types of malfunctions are grouped, so that the different circumstances can be dealt with. The system has self-check function to avoid mis-alarm or failing alarm. The sensors and electric motors have responding mechanisms to realize this function. The safety and running are guaranteed in the system.The system solves the problem of information transmission by using microwave communication including heights design of microwave antenna to ensure the power of communication. The author studies the theory of malfunction control, and to control the system by the circular code system and to use error control by redundancy method, to ensure the reliability of the communication. The communication conflict can be avoided by using conflict-avoiding method to ensure system is working in order. By this way, the channel is used efficiently.The author designs a compact interface by which human-computer intercommunication can be realized easily and the various operations of the system<WP=6>can be implemented conveniently.An operator can grasp the operation in a short time. Meanwhile, the system has the function of password setting and affirmance to prevent the operation from sending bad commands or mis-operation. In this way, the security of the system can be improved.更多还原