Abstract: The present disclosure is related to systems and methods for indoor positioning. The method includes obtaining a first location of a subject at a first time point. The method also includes determining one or more motion parameters associated with the subject at least based on one or more sensors carried by the subject. The method further includes determining, based on the first location of the subject and the one or more motion parameters associated with the subject, a second location of the subject at a second time point after the first time point. The method still further includes adjusting, at least based on surroundings information associated with the subject at the second time point, the second location of the subject to determine a target location of the subject.

Abstract: Systems and methods for updating a model of a building are provided. The method includes obtaining a three-dimensional (3D) model of a building including reference environmental data associated with a plurality of reference locations of the building and obtaining current environmental data corresponding to a current location of the building. The method further includes identifying, from the 3D model, a target reference location corresponding to the current location from the plurality of reference locations of the building and comparing the current environmental data with the target reference environmental data. The method further includes sending to the user device the target reference location when the current environmental data match the target reference environmental data, and updating the 3D model with the current environmental data when the current environmental data statistically un-match the target reference environmental data.

Abstract: An atomizer includes a liquid storage shell, an ultrasonic atomizing core, a liquid transporting cotton, a cooling block, and an end cap. The liquid storage shell surrounds the liquid storage cavity and the functional cavity which are isolated from each other, wherein the liquid storage cavity is used for storing liquid. The ultrasonic atomizing core is assembled in the functional cavity. The liquid transporting cotton is connected to the ultrasonic atomizing core and inserted into the liquid storage cavity, so as to transport the liquid in the liquid storage cavity to the ultrasonic atomizing core. The cooling block is attached on one side of the ultrasonic atomizing core. The cooling block has an atomizing hole and an oil return hole. The end cap is connected to one end of the liquid storage shell to seal the liquid storage cavity and the functional cavity.

Abstract: The present disclosure is related to systems and methods for indoor positioning. The method includes obtaining a first location of a subject at a first time point. The method also includes determining one or more motion parameters associated with the subject at least based on one or more sensors carried by the subject. The method further includes determining, based on the first location of the subject and the one or more motion parameters associated with the subject, a second location of the subject at a second time point after the first time point. The method still further includes adjusting, at least based on surroundings information associated with the subject at the second time point, the second location of the subject to determine a target location of the subject.

Abstract: Systems and methods for updating a model of a building are provided. The method includes obtaining a three-dimensional (3D) model of a building including reference environmental data associated with a plurality of reference locations of the building and obtaining current environmental data corresponding to a current location of the building. The method further includes identifying, from the 3D model, a target reference location corresponding to the current location from the plurality of reference locations of the building and comparing the current environmental data with the target reference environmental data. The method further includes sending to the user device the target reference location when the current environmental data match the target reference environmental data, and updating the 3D model with the current environmental data when the current environmental data statistically un-match the target reference environmental data.

Abstract: An atomizer includes a liquid storage shell, an ultrasonic atomizing core, a liquid transporting cotton, a cooling block, and an end cap. The liquid storage shell surrounds the liquid storage cavity and the functional cavity which are isolated from each other, wherein the liquid storage cavity is used for storing liquid. The ultrasonic atomizing core is assembled in the functional cavity. The liquid transporting cotton is connected to the ultrasonic atomizing core and inserted into the liquid storage cavity, so as to transport the liquid in the liquid storage cavity to the ultrasonic atomizing core. The cooling block is attached on one side of the ultrasonic atomizing core. The cooling block has an atomizing hole and an oil return hole. The end cap is connected to one end of the liquid storage shell to seal the liquid storage cavity and the functional cavity.