2results about How to "Simplify administration" patented technology

The present invention relates to the technical field of overhead line obstacle balls, and specifically to a rotatable obstacle ball, including a reflective sphere, a lighting device, a power supply device, a connecting rod, and a clamping device; the connecting rod includes a first connecting rod and a second connecting rod, the reflective sphere is respectively connected to the first connecting rod and the second connecting rod through a connecting shaft, the clamping device includes a first clamping device and a second clamping device, the first clamping device and the second clamping device are connected to a cable, the first connecting rod is provided with a lighting device, the light outlet of the lighting device is provided toward the reflective sphere, the power supply device is provided on the cable, and the power supply device is connected to the lighting device through a connecting line. The present invention is provided with a rotatable reflective sphere and a lighting device, and the lighting device lights up when working at night, so that the obstacle ball can also play a good warning role at night.

The application discloses a data query method and device, electronic equipment and readable storage medium. The method comprises the following steps: after receiving at least one semantic query statement, mapping information of a metadata graph atlas ontology is acquired, wherein the mapping information comprises a mapping relationship between a graph attribute class in the metadata graph atlas ontology for describing a data structure of a target data source and configuration file information of a storage file in the target data source; according to the mapping relationship and a graph attribute class corresponding to the semantic query statement, configuration file information corresponding to the semantic query statement is queried; a target storage file corresponding to the configuration file information is extracted from the target data source; the target storage file is converted into a target data set based on the metadata graph atlas ontology; and semantic calculation is performed on the target data set to obtain a query result corresponding to the semantic query statement. The application solves the technical problem that the number of data islands increases rapidly in the prior art, which leads to excessive management workload of data and reduces data management efficiency.