Patent ID: 11874261
Assignee: CHENGDU QINCHUAN IOT TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. An Internet of Things (IoT) system for managing dust pollution in a smart city, comprising a user platform, a service platform, a management platform, a sensing network platform, and an object platform, wherein
the user platform is configured to obtain user's needs;
the service platform is configured to obtain the user's needs from the user platform, and provide, based on the user's needs, services to a user;
the management platform is configured to
obtain, through the sensing network platform, one or more environmental data of an area to be detected and one or more street data associated with the environmental data; the environmental data at least including dust data indicating dust information in the air;
determine, based on the environmental data, whether there is dust pollution in the area to be detected;
in response to the determining that there is dust pollution in the area to be detected, determine, based on the environmental data and the street data, a position of at least one dust pollution source and treat the dust pollution; wherein the management platform comprises a plurality of management sub-platforms, a management platform database, and a management information-integrated management platform;
the management platform is further configured to divide the area to be detected into a plurality of sub-areas;
the plurality of management sub-platforms are configured to determine, based on the street data, road network sub-maps of the plurality of sub-areas, respectively; each road network sub-map at least including streets of the corresponding sub-area and relationships between the streets;
the management platform database is configured to obtain the road network sub-maps from the plurality of management sub-platforms;
the management information-integrated management platform is configured to obtain the road network sub-maps from the management platform database, and determine, based on the road network sub-maps and the environmental data, the position of the at least one dust pollution source;
wherein to determine the position of the at least one dust pollution source, the management information-integrated management platform is further configured to
determine, based on the environmental data, one or more target sub-areas with dust pollution from the plurality of sub-areas;
determine, based on the road network sub-maps of the target sub-areas, a target road network map, wherein the target road network map includes streets of the target sub-areas and the relationships between the streets;
extract a node vector representation of each node and an edge vector representation of each edge from the target road network map; wherein the node represents a street, and the node vector representation at least includes a name, a position and a direction of a street; the edge represents the relationship of the street, the edge vector representation at least includes the relationship between the streets;
extract the dust data of each node based on the environmental data;
add the dust data to the node vector representation of each node to obtain a target node vector representation; and

determine, according to the target node vector representation and the edge vector representation, the position of the at least one dust pollution source based on a graph neural network;
the management platform is further configured to:
obtain, through the sensing network platform, wind direction data at the position of the at least one dust pollution source;
determine, based on the position of the at least one dust pollution source, one or more target streets, wherein the one or more target streets connect to the dust pollution source; and
determine, based on inputting the wind direction data, the dust data, the position of the at least one dust pollution source, distance between the dust pollution source and each of the one or more target streets, and weather data to a pollution degree prediction model, degrees of dust pollution of the one or more target streets in a future period;
the sensing network platform is configured to obtain initial environmental data and initial street data from the object platform, and generate, based on the initial environmental data and the initial street data, the environmental data and street data; and
the object platform is configured to obtain the initial environmental data and the initial street data.