摘要
随着通信、计算机网络、数据库技术的发展,部队军需仓库的日常管理工作正朝着信息化、自动化的方向发展。基于单片机技术的军需仓库测控系统已成为局域网、310指挥网的重要应用之一,对这个方向的研究具有重要的现实意义。本论文从部队实际出发开发了一套军需仓库温湿度测控系统,目前该系统在两个军需仓库运行较好,提高了其部门的工作效率。
本系统的实现在测控单元(下位机)主要采用了汇编语言,在主控机(上位机)采用了Viusal Basic、Html等语言,数据存储选用简单、小型的ACESS 2000作为后台数据库。系统通过对军需仓库内的温度、湿度的测量,由计算机实现仓库内温度、湿度的高低超限报警,并可智能地控制风机、除湿器、干燥机等辅助设备,从而使仓库内达到并保持安全的储藏条件。每个军需仓库由若干传感器、三条电缆线以及以AT89C51单片机为核心组成一个测控单元,若干个测控单元再以RS485总线电缆与上位机相连,构成一个多点分布式温湿度测控系统。在主控室内由上位机进行集中监测显示各军需仓库的温湿度实时值、平均值、各个传感器的工位号、以及传感器在仓库内分布情况,显示所有控制设备(风机、干燥机)的运行状态,显示每只传感器的短路、断路等信息,并能实现实时报警并自动处理,可以对历史数据进行存储、查询、打印。上位机上还建立一个WEB站点,在军需处局域网上通过IE浏览器进行图形显示和可视化查询。
本次设计的军需仓库温湿度测控系统,正是顺应了军队信息化发展的大趋势,是计算机技术在军需领域的应用,它将给部队军需管理工作提供一个很好的解决方案,成为军需日常管理的最佳辅助方式之一。
With computer technology, network technology development, and military warehouses office information is an inevitable trend. The use of Computer Aided Munitions management can greatly improve efficiency, reduce duplication of efforts. The quartermaster storage temperature and humidity monitoring and control system by improving the accuracy of measurement and control automation, greatly improving the system's utility. At the same time monitoring and control systems based on the single-chip microcomputer from the restrictions of time and space, more flexible forms of freedom. The direction of research on this great theoretical and practical significance. This paper from the actual conditions troop quartermaster warehouse developed a monitoring and control system for the armed forces and standardize the management of warehouse automation and enhancing the troops Quartermaster sector efficiency.
This system uses a three-tier hierarchical structure order of architecture, the first layer from the first digital sensors environmental data collected by a single bus to the microcontroller processing and preservation, and the second layer from the microcontroller-based monitoring and control unit via a RS-485 bus transmission via RS-485 to RS signal converters -232 serial communication with the PC, the third layer from the upper body into monitoring software for data display, storage, and other management and the corresponding equipment arrived gauge control, and line conditions, and other circumstances such as: short-circuit, sensors and other damage. Distributed systems designed with single-bus computer control technology, from PC, the next crew (Control Unit), and distributed temperature, humidity acquisition sensors, cables and so composed. First tier system used a PC as a PC, can make full use of its rapid numerical calculation function and rich peripheral resources. PC is responsible for the system-wide data collection, display, system control and management. RS485 communications line through a satellite-based network connected by communication protocol with a number of second tier under crew (Control Unit) from the main component levels Distributed Control System, the next crew to deal with the collected data. At89C51 SCM selected as a second layer under the crew, play its simple interface, data transfer convenience, low price advantage, the next crew for the completion of the physical operation of the various real-time measurement acquisition. DS18B20 PC operating flowchart downward crew working methods issued orders. System architecture block diagram see Figure 2. From Figure shows that the typical master-slave Distributed Temperature Measurement System is a PC, N Taiwan monitoring and control modules, N posed by the temperature measurement points. Under the crew real-time control of the multi-point temperature measurement acquisition and communication work.
The three-tier system of multi-sensor network is composed of temperature measurement point, multi-point temperature, the lower position of the sensor operation is based DS18B20 operating agreements. System will be needed in the operation of the N-DS18B20 read out of sequence coexist on SCM, the temperature in this collection, as long as the basis of sequence can be carried out on each DS18B20 operation. PC in the use of the former should also DS18B20 search, and its serial number storage, and after searching the DS18B20 the site, as long as the corresponding sequence of its operation can be. PC downward crew by sending addresses to obtain information under the crew's response, the next crew under DS18B20 stored in the ROM of the 64 serial numbers, to read the correspondence of the DS18B20 collected by the temperature value.
Managers responsible for the maintenance and management. There are four systems in sub-systems, namely real-time data display and management subsystem, the Deputy parameter system, phone line system. One major management subsystem parameters for the changes to inquiries, such as the operation of open drying equipment.
System focus on the system design, bus, sensor selection, SCM efficiency by optimizing design of algorithms, PC management software to carry out an in-depth study will be translated into a multi-objective optimization problem solving. This paper relates to the CRC algorithm, the fork a few algorithms, Hex conversion problems in the system have been a successful application. In this paper the development of PC management software in the successful use of the three units, reflecting better.
Papers started from the technical and functional aspects of two different military and non-military research on the status quo of the system's research background, significance and research on the main content, in contrast to the traditional merits conducted on the basis of computer technology, network communications technology, database technology opened the urgency of the system, Necessity and Feasibility, and the logic of the entire system architecture analysis and summary of the design process. Then the realization of the system some of the relevant technologies were introduced, and also introduced the operation of the system environment, server configuration, database operation. Papers described in detail in the system, management, control, and other functions of the inquiry method, but also on the system other than the technical aspect was critical analysis and discussion. In order to enhance the system performance, in various modules to follow in the development of a modular, component of the ideology, described in detail the design component layers, and the process used to achieve the main technical. The final papers on the problems that exist in systems need to be further perfected and the work was discussed and prospects.
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