| 摘要 |
PROBLEM TO BE SOLVED: To automatically survey a long distance without being affected by disturbance. SOLUTION: By this automatic tunnel surveying method, a distance from a shaft 14 to an excavator 16 and the position error of the excavator 16 are measured. In this case, a light wave measurement device 20 and a far infrared ray laser irradiator 22 are disposed on the side of the shaft 14 and a reflector 32 and a screen 34 are disposed on the side of the excavator 16. Then, light waves from the light wave measurement device 20 on the side of the shaft 14 are emitted to the reflector 32 on the side of the excavator 16, the reflected light is received and the distance to the excavator 16 is measured by transmission/reception time. Also, an invisible laser beam from the far infrared ray laser irradiator 22 on the side of the shaft 14 is emitted to the screen 34 on the side of the excavator 16 and the position error of the excavator 16 is measured by the error of the irradiation point of the invisible laser beam and the center point of the screen 34. |
