Abstract: A monitoring and early warning system based on the Internet of Things for an ancient building includes an information acquisition system, a service platform and a user side. The information acquisition system is configured to acquire state data of the ancient building and upload the state data to the service platform by means of a 4G/5G gateway. The user side is integrated in a visualization device for a user to manage, analyze and interact with the acquired ancient building data, and the user side includes a monitoring module, a pre-alarm module, a management module and an expert module. The service platform is of a duster system integrating a plurality of applications, caches and database servers. The expert module is of a Res-long short-term memory (Res-LSTM) neural network model for evaluating a crack state of the ancient building.

Abstract: A method for repairing wall diseases of an earthen architecture includes the following specific steps: S1: selecting raw material components, and mixing the raw material components to prepare a mixed material; S2: mixing the mixed material with plain soil at a certain ratio to form a repair material; and S3: mixing the repair material with water at a certain ratio to prepare slurry, adjusting the ratio of the repair material to water to prepare the slurry based on diseases of the earthen site, putting the slurry into a pressure grouting machine, and repairing the diseases of the earthen site by using the pressure grouting machine. The repair material prepared in the method features excellent performance, stable volume and good compatibility with a site. The method based on the repair material has certain practical significance in repairing diseases of the earthen site.

Abstract: A display panel and a display device are disclosed. The display panel includes a first substrate, a second substrate and a spacer. The first substrate and the second substrate are aligned and bonded together. The spacer is arranged between the first substrate and the second substrate. The second substrate includes multiple pixel regions arranged in an array and a shielding region located between adjacent pixel regions. One end of the spacer is fixed to the first substrate, and the other end abuts on the respective shielding region. The second substrate further includes an anti-skid structure arranged in the shielding region and disposed between the respective adjacent pixel regions. Both ends of the anti-skid structure extend along the shielding region to form a guide member.