Design of Distributed Control System for Radiotherapy Equipment Based on Field Bus

Radiotherapy is one of the most important therapeutic methods for tumor. As more and more therapeutic methods been put forward, rigorous requirements have been set on the realtime performance, stability and maintainability of the radiotherapy equipment control system. This article designs a Four-Tier Distributed Control System with main control layer, sub control layer, execution layer and hardware control layer in accordance with the characteristics and requirements of radiotherapy equipment, as well as the entire hardware and control software of the system. Sample machine test shows that all subsystems are of stable operation and good performance, and real-time performance and all accuracy indexes fully meet the requirements of radiotherapy.