Method for the control of a pipe inspection system and for the evaluation of the inspection data

A method for operating a drivable pipe inspection apparatus which comprises a camera head swivellable about two orthogonal axes, whose swivel movements is brought about by remote controllable motors, and at least one swivel movement is measured by means of a rotational angle transducer, whose measurement signal can be displayed and evaluated on a monitor, wherein two sets of image information are created, of which a first set contains image information of an entire pipe surface and a second set contains information of details of the pipe surface, and an automatic assignment of the two information sets to one another takes place at least with respect to a location in a pipe section and an angular position;

• wherein after a start signal, the drivable pipe inspection apparatus is automatically set nto motion and therein an image information stream is generated which is subjected to a mathematical processing for pattern recognition and, in the presence of a specified pattern threshold value, a signal is generated, wherein the signal is utilized for at least one of storage of a location information, for the control of a carriage, for initiating a swivel motion of a camera directed onto the pipe surface and for actuating swivel drives of a camera, in order to direct the camera onto a detail of the pipe surface.

A method for operating a drivable pipe inspection apparatus which comprises a camera head wivellable about two orthogonal axes, whose swivel movements is brought about by remote controllable motors, and at least one swivel movement is measured by means of a rotational angle transducer, whose measurement signal can be displayed and evaluated on a monitor, wherein two sets of image information are created, of which a first set contains image information of an entire pipe surface and a second set contains information of details of the pipe surface, and an automatic assignment of the two information sets to one another takes place at least with respect to a location in a pipe section and an angular position;

• wherein the second set of image information is subjected to a processing for pattern recognition, in particular for edge detection, and a distance of the edges from one another is automatically determined, and from the values of a measured value, a minimal and maximal distance, is determined, which is compared in particular with a specified tolerance range, wherein if the value exceeds or falls below the specified range a signal is generated and at least one of displayed and stored.