▎ 摘　　要

NOVELTY - Multilayer graphene detection system based on ultrasonic comprises a working table and a sealing detection box installed on the working table. The sealing detection boxes are fixedly installed above the working tables. The working table forms a non-light tight sealing space, and a controller is provided on the worktable. The seal detection box is provided with a defect detection mechanism (103), a blowing mechanism (104) and a negative pressure mechanism (105). The defect detection device includes an ultrasonic detection device and an optical detection device. The ultrasonic detecting device includes a first guide rail (108) and a first sliding block. The first guide track is fixedly mounted on the inner wall of the sealing detection tank, and the first guide train is formed with a first groove (202). A first bump is provided in the first slide block, so that the second slide block slides along the second guide rail (204). USE - Multilayer graphene detection system based on ultrasonic for use in material learning, micro-nano processing, energy, biomedicine and drug delivery. ADVANTAGE - The system accurately identifies the position and type of the defect, and calculates the defect area size according to the area size, thus identifying whether the defect needs to be repaired, or whether it has reached the scrapping standard. The system has good stability and control precision. The blowing mechanism can blow the impurity attached on the graphene surface, so that the detection result is more accurate. The air in the sealing detection box can be extracted through the negative pressure mechanism, which can reduce the air flow, so as to reduce the influence of the air ionization. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a defect detection method of multilayer graphene detection system based on ultrasonic. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of the Multilayer graphene detection system. Defect detection mechanism (103) Blowing mechanism (104) Negative pressure mechanism (105) First guide rail (108) First groove (202) Second guide rail (204)