| It's a broad application to measure and control temperature in the industry production. Especially in some industry, such as oil, chemistry, electric power, metallurgy, it's a very important tache to measure and control temperature, temperature parameter is an important index in industry control situation.The paper mainly researches the application in kinds of temperature control situations in the industry field based on ARM9 construct and embedded Linux system. Presently the control projects normally are PLC and SCM. PLC normally aims at single project or small repetition project, lacks in agility and volume, the cost is higher comparatively; SCM is mainly used in the minitype equipment, the cost and the power is lower, the efficiency is higher, but it is hard to transplant. In order to adapt to the improvement of information industry, the paper focuses on strongpoints, weakpoints and applied fields of PLC and SCM, and puts forward to adopt ARM9 embedded micro controller and Linux operation system to control the temperature. It has a good expansibility, dependability, fast response speed, small volume, offers a new type control project to users.Firstly the paper discusses the composing of the embedded operation system, then designs the hardware system of temperature control system which mainly consists of CPU module, analog circuit module, storage module and communication module; In the design of software system, we aim at the transplant of Boot-loader, the transplant of Linux kernel, the tailor of root file system, the programming of drivers and applications.The functions of system mainly are circularly sampling the data from the AD channels, uploading the data to the server, and receiving the control data package from the server and record logs. Through the online test, we conclude that, the system is steady, has good sampling and control effect. It can be good for reducing the cost of production and labour intensity, and guarantees the safe production. |
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