2results about How to "Resolve change" patented technology

The application belongs to the technical field of laser. A kind of dual-wavelength asynchronous common cavity amplification and frequency 589nm laser and method are provided, 1064nm and 1319nm single frequency continuous seed source are chopped after corresponding acoustooptic modulator, respectively pass through lens shaping, by first coupling mirror, couple into solid amplification module, two pulse light frequency are all, time sequence difference, all are located near the falling edge of pump source. After amplification, light is separated by first beamsplitter, 1064nm light passes through corresponding mirror, second 1064nm lens, 1319nm light passes through second 1319nm lens, then by second coupling mirror, couple into frequency conversion crystal, and output 589nm laser by second beamsplitter, the application simplifies structure, improves frequency conversion efficiency and beam quality.

This application relates to the field of bridge safety monitoring technology, specifically to a method, device, and system for locating bridge damage areas. The method monitors bridge health using a parallel macro-micro dual-channel physical information neural network structure. The macro-channel generates global predicted physical field quantities based on global monitoring information through a fully connected neural network. The micro-channel, based on the global predicted physical field quantities output by the macro-channel, introduces a damage mechanics constitutive model to physically constrain the graph neural network, focusing on key component areas, identifying local physical inconsistencies, thereby locating local damage and quantifying uncertainty. This achieves decoupling from the environment / load-dominated response provided by the macro-channel, solving the problem in existing technologies where environmental changes mask changes caused by minor damage.