Float online coating hot end real-time quality detection device

The invention discloses a float online coating hot end real-time quality detection device, which adopts a single-side cantilever type insertion structure, and comprises a hanging support mechanism, an optical detection mechanism, a transmission moving mechanism, a cooling protection mechanism, a sound-light alarm mechanism and a temperature compensation mechanism, a water bag provided with a spectral measurement element, a probe and a movable platform is inserted into the downstream position, close to a coating main machine, of an A0 area from one side of an annealing kiln and suspended above a glass tape in the annealing kiln, collected data and operation results are transmitted to a human-computer interface, coating process parameters are corrected by comparing the collected data with target data, and the coating process parameters are calculated. The coating unit is timely controlled to realize quality control; the device is simple in structure, plug-and-play, simple, quick and convenient to maintain; mean