| 摘要 |
PURPOSE:To count object materials accurately even if they are moved irregularly by binorizing the scanning signal of the object material and counting the binary signal in every scanning to attain a signal and to count an AND signal between this signal and a binary signal attained a prescribed time before said signal and adding a differential value between both counted values. CONSTITUTION:Optical sensors 2 and 3 are provided in the direction crossing the movement direction of many object materials 5 flowing continuously to detect the object material 5. The outputs of these sensors are binarized in a binary circuit part 7, and the binary signals are counted in a counter 8 for every one scanning of sensor. The AND between these binary signals and the binary signal attained in the binary circuit part 7 a prescribed time before is ANDed 9 and the resultant value is counted in counter 10 for every one scanning. Thereafter, the difference between both counted values is calculated to add the arithmetic result. |
