METHOD FOR IDENTIFYING POSITION, AT WHICH WORK IS DONE INSIDE OF A SPACE ENCLOSED BY FACES, AND WORKING RESULT MANAGEMENT DEVICE.

摘要

Disclosed are a position identification method and a working result management device, which are used for inspecting the inside of a space enclosed by the faces of a boiler furnace or the like, which can detect a plurality of positions and which are used for inspecting the inside or the outer walls of a container.  The method is used for identifying the position, at which works are done inside of the space enclosed by the faces.  The position for doing works inside of the space is located at the side walls.  In the method, wave receivers capable of receiving sound signals are mounted at three or more points, which are substantially parallel to the side walls, which are known in position coordinates, but which are not on a common straight line.  The signals are transmitted from a sound-wave-transmittable wave transmitter which is arranged at the position for doing works on the side walls of the space.  The arrival times of the signals which arrive at the three or more wave receivers not lying on the common straight line are measured.  The arrival times and the position coordinates of the three or more wave receivers are used to identify the position coordinates of the wave transmitter.