2 results about "Wireless relay network" patented technology

The present application belongs to the technical field of mine hoist, and proposes a cage control system and control method based on visual feature extraction and deformation compensation, which comprises a cage integrated terminal installed on the cage of mine, a wireless relay network arranged along the shaft, and a ground control center arranged on the ground; the cage integrated terminal comprises an explosion-proof box body; the present application sets the integrated terminal on the cage, and configures a weighing sensor, an acceleration sensor, and an image acquisition and processing module, so that the cage has real-time sensing capability for its own load state and running state; meanwhile, the image feature extraction module is combined to dataize the internal situation of the cage, realizing the change from traditional indirect detection relying on the hoist side to active sensing at the cage end; and in the case of abnormal wireless bridge communication, the key state data can still be sent through feature extraction and LORA communication module, thereby ensuring the continuous availability of the internal personnel and material state of the cage.

The invention discloses a Kupman prediction adjustment method and system for a backup power supply based on a multi-system wireless relay, and relates to the technical field of wireless relay network cooperative communication. The Kupman prediction adjustment method comprises six stages of demand description, node architecture, adaptive link selection, anti-interference control, cross-system security and data integrity guarantee. Constructing a heterogeneous backup power supply multi-system wireless relay monitoring network; designing a prediction voltage and frequency regulation cooperation strategy based on a Kupman operator, developing a disturbance adaptive back-up power supply smooth switching control mechanism, calculating the voltage deviation and the frequency deviation of the power grid, and constructing a switching instruction vector; and designing an event trigger function for power grid abnormal fault identification, executing a corresponding strategy according to different outputs of the event trigger function, and judging whether switching succeeds or not through a comprehensive quality evaluation index. The invention provides a novel wireless transmission system which can be self-adaptively compatible with multiple protocols, resist strong interference and prevent unauthorized access.