3results about How to "Does not affect the function" patented technology

The invention discloses a pedestrian bridge vibration comfort evaluation platform considering human-bridge interaction. The pedestrian bridge vibration comfort evaluation platform comprises a self-energized sensing vibration force measurement platform and an analysis control system, the self-energized sensing vibration force measuring platform comprises a plurality of self-energized sensing force measuring tables and a servo control motor; friction nanometer generator self-powered three-way force measuring blocks are densely distributed on the self-powered sensing force measuring table; the analysis control system comprises a data acquisition module, a feedback control module and a data output module, acquires a three-dimensional pedestrian load on the self-energized sensing vibration force measuring platform in real time, calculates bridge dynamic response based on a pedestrian bridge finite element model, and further feeds back and controls the vibration state of the self-energized sensing vibration force measuring platform to simulate the actual vibration condition of the bridge; and finally, evaluating the vibration comfort of the bridge according to the dynamic response characteristics of the bridge in the whole loading process. According to the invention, real-time interaction between the computer end and the self-energized sensing vibration force-measuring platform is realized, sensing energy consumption is reduced, and a pedestrian bridge vibration comfort assessment result closer to a real situation is obtained.

The utility model discloses a counter-current extraction system comprising a circulating device, which is characterized in that a communicating pipe is connected between a water phase overflow area of a previous-stage extraction box and an overflow box of a next-stage extraction box, and a valve is arranged on the communicating pipe to form the circulating device, so that a previous-stage water phase of a counter-current water phase can return to the next stage again for extraction reaction; the circulating device can prolong the solution extraction reaction time and deepen the extraction depth in the effective extraction box volume, so that the extraction efficiency is improved, the extraction capacity is improved, an unqualified solution is prevented from flowing into the previous stages in an abnormal state, a large amount of water pumping phase rework is prevented, and the rework of an unqualified water phase in the extraction box is realized through a control valve of the circulating device; compared with a traditional extraction system, the extraction system has the advantages that the yield can be increased, and meanwhile, the abnormal condition disposal period and cost are reduced. The circulating device is easy and convenient to manufacture, easy to obtain, small in occupied area and easy and convenient to operate, the overall appearance of the extraction device is not affected after installation, and the use function of an original extraction box is not affected.