| 摘要 |
FIELD: physics. ^ SUBSTANCE: photographic camera and a projector are mounted on a platform. The platform is turned by a stepper motor. The platform is raised and lowered by a stepper motor. Turning the photographic camera in order to adjust the apparatus is carried out using a stepper motor. Electric power supply to the photographic camera, the projector, the motor for turning the photographic camera, the electric motor for turning the platform and the electric motor for raising and lowering the platform is carried out using a power cable lying inside a pipe. The stepper motor, projector and photographic camera are controlled by a controller which receives signals through a modem line from a computer. ^ EFFECT: high accuracy of measuring geometric defects of cylindrical reservoirs by adding a mechanism which enables raising, lowering and turning the platform, into which enters a pipe with a movable platform attached to it. ^ 4 dwg |
