Digital signage communication method and device

Abstract

The invention relates to the technical field of digital signage communication, in particular to a digital signage communication method and device, and the method comprises the steps: laying digital signage on each floor of a building, taking the digital signage as a node, taking a road section between adjacent signage as an edge, recording the length and width of the road section, and building a topological graph composed of a floor subgraph and a plurality of local evacuation areas; each digital signage periodically collects environmental parameters such as temperature and smoke of a road section to which the digital signage belongs and crowd images, calculates an LCDT weight based on the length and width of the road section and crowd density obtained through a crowd counting model, and sends the LCDT weight together with the crowd density to the intelligent guide agent of the corresponding floor; and the intelligent guide agent and the intelligent coordinator adopt a shortest path algorithm on a floor subgraph and a cross-floor weighted subgraph formed by floor stair nodes, exit nodes and stair road sections according to the LCDT weight and the floor connection to obtain path weights from the nodes to the exits, and the next node of the minimum node is selected as an evacuation direction to be issued. According to the invention, the problem that in the prior art, a digital signage is mainly used as a static or semi-static display terminal and lacks real-time communication and cooperation capability based on field sensing data is solved.

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