The Development Of The Control System Of The Intensity Modulated Spiral-Multi-Tomotherapy Equipment

The intensity modulated spiral-multi-tomotherapy equipment is a kind of radioactive medical treatment device, which is used to treat the knub and exerts the multi-faultage and non-coplanarity technology. It is a great pioneering work of Chinese industry fields of medical treatment devices and represents the direction of world's radicative medical treatment. This device has been one of the greatest progresses in knub radioactivity fields since developing Co60 radioactivity treatment in 1950.The exploitation of this device's control system is on the base of the internal and external experiences and achievements. It adopts many kinds of mature techniques of software and hardware, combing the software-engineering rule. It has accomplished the control of the orientation of all the devices and treatment course.The bottom control subsystem adopts the technology of LonWorks fieldbus, which has the characters of the simply structure, high reliability, good system integration and being easy to fitting and maintenance, so it is able to be content to the demands of the treatment device's control and safety. The top control subsystem is an application program basing on the Windows operating system. It is written by the Visual C++ language which is efficient and a kind of OOP language.The application program provides us a friendly interface and rich functions, which is able to content the demands of the control. The bottom control subsystem is connected to the top control subsystem by the dynamic link library. They complete the control functions by three processes which are the initialization and down sending and up sending of data.The entire control system can achieve many functions which are the operating of the files, the compiling of the treating files, debugging, setting of the parameters, disposing of trouble and helping, and so on. It also can complete the functions of the dynamic displaying of the graphs and the figures and the indicator lights of the treatment states.Following the software-engineering rule to develop the project, we divided the task into many simple and independent function units. The interface of all theunits is as better as simple and independent. During the course of coding, we encapsulate the codes into some functions which can be used repeatly, so we can reduce the complexity and the spending of the maintenance of our software.In the cource of the exploitation of the entire control system, I joined the analyse and design of the system, but was mostly engaged in the exploiture of the software part.