| Existing electric locomotive air brakes of Shao Shan types are mostly used DK-1 model electric-air braking machine as control component, its core is to adopt the relay and touch logic control. Though its application is riper, there are also some obvious shortcomings: for example, because vibration may make up the relays miss movements, high Fault rate, short-lived, connecting more and safeguard hard, the logic relation of control is once fixed with connecting, it is very difficult to modify. There is no perfect fault detection and diagnose function online, the air brakes directly relate to security of people's life and property, It is difficult to meet the developing needs of strategy of the railway with heavily loaded and high speed. The systems of electric locomotive air brakes control and fault diagnose we designing are adopted non-touch logic control technology which replaced touch logic control technology before, it's improve the dependability of the system, the device can through programming to produce different logic combination functions, In order to achieve the goal of controlling different styles, the part of online fault detection and diagnose of the air brakes system, to detect the working state of the key part of electric locomotive air brakes system, using the fault diagnose system to diagnose the fault. So the study of electric locomotive air brakes and fault diagnose system is meeting the demands of the railway with heavily loaded and high speed, having enormous economic worth and social benefit.This paper regards air brakes of electric locomotive of SS3B as the research object, on the basis of analyzing logic control relation, principle, interface and characteristic in an all-round way, have introduced the whole mentality of designing of the system, the application ofprogrammable ISP technology, the designing of DKL brake logic device and detection and diagnose system of air brakes device. |
