The Redundancy Design Of The Automatic Splitting Phase Device For Electrical Locomotives Based On The Double CPU Structure

"A redundancy design of the automatic splitting phase device for electrical locomotives based on the double CPU structure"is put forward to satisfy the development request of our country's railroad construction. With this device, it comes true that locomotives pass the splitting points automatically. In addition, it optimizes the process, improves the security and reliability, and prolongs the equipments'service lives.This system is established in improving the safety and reliability. Based on the apery control theory, the embedded system and the field bus technique, the automatic splitting phase technique is developed, which is used the redundancy information source and the double CPU structure. The system's function is that it can sample the current grade of the locomotives, get the real time information from the TAX equipment such as the kilometer mark and the velocity etc. With this information and the signal from the ground, it can control the locomotives to pass the splitting phase and alarm at the important process with the sound and the light.The whole structure of the system, embedded technique, the design of the hardware and the software, and the anti-interference method are introduced. It is detailed introduced the system design and the control arithmetic in the thesis. Additionally, the embedded system real time characteristic, the principle of the multi-task and the priority of the task are discussed. The code searching of the 1-wire devices and their work principle are also presented.Now the design of the system have been completed and tested in the train."A redundancy design of the automatic splitting phase device for electrical locomotives based on the double CPU structure"is a try which first applies the embedded system, double CPU structure and the redundancy information in the train control field, and achieves the expected purpose. It provides useful experience for the development of the automatic splitting phase technique.