Vibration telemetering system

• US 4,621,263 A
• Filed: 07/30/1984
• Issued: 11/04/1986
• Est. Priority Date: 08/12/1983
• Status: Expired due to Term

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Sugimoto, Hiroshi, Takenaka, Toshio, Yamanaka, Yoshinobu
• Primary Examiner(s): MYRACLE, JERRY
• Application Number:
  US06/635,925
• Time in Patent Office: 827 Days
• Field of Search: 340/683, 340/518, 340/825.1, 340/870.07, 340/870.16, 340/870.28, 340/870.29, 73/590, 73/657, 73/579, 73/634, 376/340
• US Class Current: 340/870.07
• CPC Class Codes: G01H 1/00 Measuring characteristics of vibrations in solids by using direct conduction to the detector G01H9/00, G01H11/00 take precedence

Abstract

There is dislosed a vibration telemetering system capable of measuring adverse vibrations of installations or equipment in a plant such as a nuclear power plant. The system includes a vibrometer which measures the vibrations in a non-contacting fashion. The direction at which the vibrometer faces is adjusted by an angle adjusting mechanism which is mounted on a travelling unit running along a predetermined inspection route in the plant. A measured signal from the vibrometer is transmitted to a remote control room through a communication system and is used for evaluating whether or not the state of the plant is normal. The remote control room can control the travelling unit and the angle adjusting mechanism through the communication system in order to monitor the vibrations of a plurality of places along the predetermined inspection route.

Claims

1. A vibration telemetering system comprising:

a travelling means for running along a predetermined inspection route;

an angle adjusting means mounted on said travelling means;

a vibrometer, mounted on said angle adjusting means, for measuring the vibration of an object in a non-contacting fashion, said vibrometer being moved by said adjusting means so that the detecting face of said vibrometer may be directed towards said object;

communication means for providing as outputs therefrom respective control signals for controlling said travelling means and said angle adjusting means and for receiving as a detection input signal a measured value from said vibrometer; and

,

monitoring means for causing said communication means to develop said control signals and for receiving the measured value from said vibrometer through said communication means and for evaluating from the measured value if the state of said measured object is normal.

2. A vibration telemetering system according to claim 1 wherein said travelling means comprises:

a rail which is laid along said predetermined inspection route.

3. A vibration telemetering system according to claim 1 wherein said travelling means comprises:

movable means which runs on the floor along said predetermined inspection route.

4. A vibration telemetering system according to claim 1 wherein said vibrometer is of a Laser Doppler type.

5. A vibration telemetering system according to claim 1 wherein said measured object is an installation or equipment of a nuclear power plant.

6. A vibration telemetering system according to claim 1 wherein said communication means is of a wire system.

7. A vibration telemetering system according to claim 1 wherein said communication means is of a wireless system.

8. A vibration telemetering system according to claim 1 wherein said system further comprises:

a TV camera mounted on said angle adjusting means for producing an image signal of the measured object to be transmitted through said communication means to said monitoring means so that the direction to which the face of said vibrometer is positioned may be confirmed.

9. A vibration telemetering system according to claim 8 wherein said monitoring means further comrises;

a TV set for visually confirming the direction at which said vibrometer looks.