ABSTRACT
With the fast development of science and technology, better performance and higher operational speed of electrical locomotives have required much more than before on reliability,safety and efficiency. At present, studies on the safety operation of electrical locomotives in China focus on the active safe guard of high-speed locomotive and the passive safe guard of their bodywork. On the other hand, the crashworthy system of those locomotives being used in Chinese factories have to be imported from abroad with high cost and difficulty in wide promotion. According to the actual needs and present situation in Chinese factories, based on studies of the same type of foreign products, the thesis, therefore, provides us with some studies and development of the intelligent crashworthy system of electrical locomotive.
The intelligent crashworthy system of electrical locomotive is consisted of two parts: intelligent crashworthy equipment and wireless sound communication equipment. This thesis presents the readers both the hardware construction and the software development of this system. The core control unit of the intelligent crashworthy system is the singlechip AT89C52, which is used to read distance and speed data from the laser telemeter sensor as well as the photoelectric coder before giving us an alarm of stopping the locomotive by the analysis and comparison of the afore-mentioned received data. Furthermore, this crashworthy system is able to synchronously show the distance between two locomotives running on the same track. Once reaching the set alarming distance, the sound alarm rings; once reaching the set safe maximum distance, the locomotive is forced to shut down. while the software contains a time-triggered embedded system, ensuring the reliable and predicable performance of the whole system.
Which meets our prospective goal on the whole. This intelligent crashworthy system of electrical locomotive, high-precise, low price with wide application, is expected to be favorably marketable.
Key Words: Electrical Locomotive; Singlechip; Crashworthy