Transponder Ground Electronic Unit Based On The Ctcs The High-capacity Point Key Technologies

This dissertation is designing LEU, a sub-project of the spot responder in China Train Control System (CTCS). The dissertation research the key technique of LEU, then put forward a solve scheme of the system, which base on high-speed MCU, CPLD. The dissertation resolved these key-problems:1. According standard of CTCS spot responder , and the actually of train system in our country, the design target of LEU is put forward.2. Base on interface technique of MCU, LEU realized receiving and processing user information credibly. Meantime LEU finished the controlling of multi-way spot responder.3. Using digital logic designing method base on CPLD, LEU realized coding and transmitting in long-distance of message data4. Analyzing the states of LEU which maybe appear, LEU increase the self-check and record function which can provide credibility safeguard for LEU.