| 摘要 |
<p>PURPOSE:To automatically updata a guide display by detecting the arrival of a train by a door open signal and the departure by a door close signal and a running distance, and altering the display of the indicator with the detection signals. CONSTITUTION:By pressing a selection switch 25 when a train starts business operation, an instruction unit 19 outputs a long pulse signal. Thus, a display unit 24 is initialized, and a display pattern is selected in response to the long pulse signal. When the train arrives at a station so that a door open/close switch 18 outputs a door open signal. Then, a short pulse signal is outputted, and the unit 24 indicates ''this train has arrived at...''. When the counted value of a counter 17 which counts the speed pulse becomes the set value after the door is closed and the train starts, a short pulse signal is outputted, and the unit 24 indicates ''next station is...''.</p> |
