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tection machines at work, access to sufficient energy. However, when detected Walking distance to a certain extent, especially when turning more, cable and wall friction will gradually change, so the machine can not detect longrange detection, the general can only detect 3000 M. Detection of the energy supply by noncable way. Power for the cabin equipped with the necessary power, mainly for aircraft within the detection devices and control equipment services. No way cable does not exist Cable friction with the wall so the problem can walk longer distances (one can test for 100 KM ~ 200KM long pipeline). 3 Positioning System In order to determine the shortings of the axial position in the rear cabin equipped with the power to achieve mileage of round positioning. Usually use only one round of mileage measured by the spring support close to the wall, testing machine running, then turn round mileage per rotation lap, detection machines in storage in the record set a mark, each of the two tags Miles is from the round of the perimeter, which is testing machine in the corresponding pipeline traversed the distance. However, this method is not very reliable, because a large number of pipeline wall of the scale (such as paraffin), they will make the wheels skid, thus affecting the positioning accuracy. Therefore, the aircraft used three wheels and es at the same time recording data mean, this is not only enhance the stability of the wheels running, but also improve the positioning accuracy. 4 cabin all the munications and data analysis system Cabin to the socket, plug in the form of munication. Traction bubble of the probe and detection of ultrasonic tanks fired receiving device connected through the micromotor test module connected with the electrical power supply tanks, power bubble milestone reached the round of the positioning signal detection module was stored. In addition, the module is also available for testing with external puter connected to the interfa