Research and Development of PWM Signal Converter for Underground Railway Braking Testing Platform

A system for processing eight routes of PWM signals ranging form 400Hz to 1KHz was developed for the underground railway braking testing platform.The system was based on the MSP430F449 CPU that could convert the received signals and send them to the PC.Meanwhile, the system could accept the signals from the PC and output the corresponding PWM.According to the test result,the system can meet the requirements of high speed and real time processing and reliably.