Artificial board and facing artificial board quality online sheet detection method and device

The invention discloses an artificial board and facing artificial board quality on-line sheet detection method and device, the device comprises a rack, the rack adopts a frame structure, the rack is provided with a first conveying part and a second conveying part with the same structure, and a detection area is formed between the first conveying part and the second conveying part; the distance between the first conveying part and the second conveying part is smaller than the length of a plate, and the plate can be smoothly transferred between the first conveying part and the second conveying part; the knocking part is arranged between the first conveying part and the second conveying part, operation of the two conveying parts cannot be interfered, the knocking part is arranged on the upper portion of the plate and comprises a knocking support, and a plurality of electrically-driven or air-cylinder-driven knocking hammers are arranged on the knocking support and can move up and down according to a certain rule