| 摘要 |
The invention concerns a method for measuring the distance separating a roof (8) of at least a connecting piece (9) and a specific element (6) of a tip of a pipe terminal portion, which consists in: displacing the self-powered measuring means (13, 14) inside said pipe; performing at least one sequence of measurements while said means are moving in the connecting piece; storing said measurements in the form of signals in at least a storage unit; processing said signals. The invention is characterised in that it further in: detecting in real time the passage of the consecutive transitions (10, 11) between the connection piece roof (8) and the pipe terminal portion tip (6); triggering the measurements for a predetermined time interval between the moments of detection of said transitions; processing the stored signals to determine the distance (D) separating two consecutive transitions.
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