| 摘要 |
PURPOSE:To display the warning for operation without distrubing the operator's forward watching, by comparing travelling speed and a speed limit pattern, and by generating an acoustic sound controlled at intermittent time intervals telling the current condition in response to the remaining allowance in speed. CONSTITUTION:The output of a speed generator 3 and the output of a receiver 4 being subject to signals from ground devices are supplied to an automatic train stop device 1 with a pattern, and travelling speed from a speed counting circuit 14 and a speed limit pattern from a pattern generator 13 are compared by means of a comparison circuit 15. The deviation is forwarded to a variable frequency oscillator 21, AND with the output of an acoustic frequency oscillator 22 is taken and intermittently put out, and a sound is generated from a speaker 25. Thus, since the analog quantity of the quantity that an automatic controller controls can be indicated to an operator by means of an acoustic means, the operator can appropriately operate the train without disturbing the operator's forward watching. |
