| 摘要 |
PURPOSE:To prevent the generation of hunting without shortening a range finding distance by operating a controller, when a signal of a photodetecting sensor is in an unstable area. CONSTITUTION:A multivibrator 16 of a controller 14 receives an AOP pulse (b) of a microcomputer 6 and generates a signal (c) of a time constant T determined by a capacitor 17 and a resistance 18 from its fall, and adds it as an (a) input of the microcomputer 6. In this case, even if an integral waveform (threshold level of a comparator) goes into a hunting area, since the pulse rises after Tsec after the AOP pulse has fallen to the microcomputer 6, it does not occur that an input signal of the microcomputer 6 acts flapping and a hunting phenomenon is not generated. |
