Xiaomi Inc.

Qun Tao

Huayijun Liu

Tong Zhao

A smart respirator includes a main respirator-body including a first open end and a second open end. A diameter of the first open end is smaller than a diameter of the second open end. The smart respirator further includes a front respirator-body arranged at the first open end. The front respirator-body includes a filter sheet arranged inside the front respirator-body and configured to absorb pollutants in air entering the front respirator-body, an air sensor arranged inside the front respirator-body and configured to detect an air index of filtered air filtered by the filter sheet, and a flow sensor arranged inside the front respirator-body and configured to determine a total respiratory amount. The smart respirator also includes a fixation band arranged at the second open end.

Smart respirator and method and device for calculating pollutant absorption

A smart mask includes a main mask body including a first opening end and a second opening end. A diameter of the first opening end is smaller than a diameter of the second opening end. The mask further includes a front mask body arranged at the first opening end and fixing straps arranged at the second opening end. The front mask body includes a filter configured to absorb pollutants in air entering the front mask body and a sensor configured to record a wearing time of the smart mask.

Smart mask, method, smart mask and apparatus for calculating pollutant absorption quantity

The present disclosure relates to a universal wheel assembly and a suitcase including the universal wheel assembly. The universal wheel assembly includes: a base structure including an upper base and a lower base which form a cavity therebetween; and a wheel bail locked in the cavity in a manner such that the wheel ball is capable of rolling in all directions, wherein a bottom of the lower base is provided with an opening enabling a part of the wheel bail to protrude out of a lower end face of the lower base to form an exposed rolling spherical surface, and an inner diameter of the opening is smaller than a diameter of the wheel ball.

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Beijing, China

Qun Tao