| 摘要 |
PURPOSE:To perform accurate measurements simultaneously in real time, by attaching light emitting bodies, receiving the light beams from said light emitting bodies, and measuring the amount of displacement or the amount of vibration of bodies. CONSTITUTION:Light emitting diodes 18-21 are attached to bodies or a measuring points. A lens, which is provided in front of an electrooptical displacement measuring device, is selected in correspondence with the attaching range, so that the bodies are located in the field of view. Then the diodes are sequentially turned ON and OFF by a 1/4 ring counter and AND gate circuits 14-17. The flashing period is determined by the response frequency of the electrooptical displacement measuring device, the number and displacement of the bodies or the measuring points, and the frequency of vibration. For example, when the frequency of vibration is 100Hz, each of the light emitting diodes 18-21 may be flashed at every 0.005sec. At the displacement frequency of 500Hz, the number of bodies or measuring points up to 25 can be measured in real time. |
