| 摘要 |
PURPOSE:In a device for transmitting/receiving the operational signal between the door and chassis, to eliminate the wiring between the door and the chassis by constructing such that the operational signal from an operator provided on the door or the chassis is converted into an optical signal to be received to the receiver circuit at the door side. CONSTITUTION:An oscillation circuit 5 is provided on the door 6 of a car while a receiving circuit 9 is provided on the chassis 10 and to set or release the car speed of a constant speed travelling device or to set the starting time of a drive computor. In other word the operational signals S1a-S1d from each switch 2a- 2d are fed through a time series signal generating circuit 3 to an electro-optical converter or a light emission diode 4 where it is converted into an optical signal S3 to irradiate the photo-electric converter in the receiving circuit 9 or a photo- transistor 7. Then on the basis of an electric signal S4 converted there, corresponding control signal Sc is produced from a control circuit 8. |
