Abstract: The present invention provides a wireless charger, comprising: a controller used for determining the priorities of at least two terminals in a wireless charging region of the wireless charger, and distributing charging electric energy to the at least two terminals according to the priorities. The present invention further provides a multi-terminal wireless charging method. With the technical schemes of the present invention, when a plurality of terminals are wirelessly charged at the same time, the distribution of electric energy can be optimized, thus improving the charging efficiency.

Abstract: A method for monitoring a main machine, a monitoring apparatus and a main machine are provided. The method for monitoring the main machine includes paging, by a monitoring apparatus, a main machine within an effective area, returning, by a main machine being paged, apparatus information of the main machine; determining at least one main machine as a monitored main machine according to the apparatus information returned by the at least one main machine; establishing a monitoring connection relationship with each monitored main machine; and monitoring an emergent event of the at least one monitored main machine or inquiring about a working status of the at least one monitored main machine by using the monitoring connection relationship established.