| 摘要 |
PURPOSE:To reduce the size and weight of an optical repeater and, at the same time, to remove restriction on the range of the action of a moving robot, by providing function which can automatically follow a light emitter and light receiver in the direction of a transmission and reception partner to the optical repeater. CONSTITUTION:If the optical axis of a light receiver 1 is not aligned with that of the light emitter of a ground station when a signal f1 is received by the light receiver 1 and amplified at a selection amplifier 2 and a light emitter 3 transmits the information to the next repeater or robot, the signal f1 cannot be received or becomes weak. Therefore, the effective value of the signal component of the signal f1 is found by an effective value circuit 4 and, when the effective value becomes lower than the voltage of a reference power source 5, it is detected by a comparator circuit 6 and a motor is rotated by driving a relay 7. When the intensity of the receiving light increases and the output of the circuit 4 becomes higher than the voltage of the reference power source 5, the output of the comparator circuit 6 is turned off and the relay 7 is disconnected and, as a result, the motor is stopped. |
