THROTTLE CONTROLLER FOR LOCOMOTIVE AND METHOD OF FEEDBACK OFANALOGUE SIGNAL IN THE SAME DEVICE

摘要

PROBLEM TO BE SOLVED: To provide feedback ability for preventing very high reverse voltage to an analogue system forming a part of an electronic control type throttle controller. SOLUTION: A CPU transmits a signal representing an analogue voltage to an output driving step 11. The output driving step generates an analogue output voltage signal from this signal so as to supply it to a train command line 14. A first analogue voltage signal is provided from a node 12 supplying current to the train command line for feedbacking the analogue signal representing a state of the train command line from the output driving step to the CPU. When the analogue voltage signal is divided in lower areas by means of a voltage divider 30, a second analogue voltage signal is provided. A signal generator connected so as to receive the second analogue voltage signal generates a third analogue voltage signal. A voltage/current converter 50 receives the third analogue voltage signal so as to generate a current signal adjusted to its output terminal. A converter inside the CPU converts the current signal to a fourth analogue voltage signal.