Multi-Channel Analyzer For Water Quality Based On Embedded OS

Water quality analyzer can detect the value of physical and chemical elements in the water and make sure the extent of the water pollution. Protable water quality analyzers are easy to manipulate and sensitive. They are the main instruments of monitoring water quality.With the development of microchip technique and software technique, the traditional control software which is based on the foreground/background system can't fit to the increasing complexity of the embedded system and the requirement of the real-time ability and reliability. Embedded operation system has become an important part of the computer science. It has been widely used in manufacturing industry, process control, instrument design, communication systems and so on. This thesis outlines the concepts of the embedded operating system, elucidates the programming method and diversified problems based on embedded operating system. Then, explains how to create multi-task, analyses their schedulers and context switch with three typical embedded operation system.Take the multi-channel water quality analyzer as an example, the structure and measuring process are introduced and the task partition of this system is completed. On the basis of embedded operation system and compatible microchip, the design of hardware and software is achieved. This scheme provides a method to reduce the difficulty of designing the control software and enhance the performance of the system.At the end of the thesis, the application results of the multi-channel water quality analyzer are given out. The results show that the method in this thesis is feasible and can satisfy the requirements of the design. What's more, this method can be replanted to other systems.