Automobile fuel tank photographical contrast detection method

The invention relates to an automobile fuel tank photographical contrast detection method. The automobile fuel tank photographical contrast detection method comprises the following steps: I. placing an automobile fuel tank on a product profiling mold; II. pressing a start button in a safety status; III. detecting by photographic equipment, and comparing the quantity of welding parts, the mounting positions of assembling parts, bar codes and the like on the fuel tank with those of a standard picture; and IIIV. detecting whether the fuel tank is qualified, and if not, confirming and checking manually until the fuel tank is detected to be qualified. According to the automobile fuel tank photographical contrast detection method, the product detection stability is improved, the labor intensity of workers is reduced, whether a machine is operated normally is only required to be observed by a person, if the machine has a fault when in working, a scram button is only required to be pressed down, and then the machine can stop, thus, the safety of operators and products are effectively protected and the detection efficiency is improved.