Online monitoring and automatic control system for temporary stress of float glass

The invention provides an online monitoring and automatic control system for temporary stress of float glass, and belongs to the technical field of float glass production. The annealing kiln comprises a support and conveying rollers arranged on the support at intervals, at least one stress detection device is arranged on each of the two sides of a D area of the annealing kiln, the stress detection devices intermittently collect stress data of a glass plate passing through the D area of the annealing kiln, and the stress data collected by the stress detection devices are collected to the DCS. And a database of corresponding relations between different stress data and the opening degrees of the cooling air pipes is established, and the DCS collects the stress data obtained by the stress detection device and sends control instructions to the control valves of the cooling air pipes according to the corresponding relations of the database. The method has the advantages that the annealing stress of the glass plate