Sensor network-based indoor emergency navigation method

A sensor network and navigation method technology, applied in the field of wireless sensor networks, can solve problems such as inability to accurately quantify congestion, inability to obtain algorithm performance, inability to accurately reflect the impact of congestion evacuation time, etc., to achieve the effect of reducing flooding overhead.
CN101895953AInactive Publication Date: 2010-11-24INST OF SOFTWARE - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF SOFTWARE - CHINESE ACAD OF SCI
Publication Date
2010-11-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a sensor network-based indoor emergency navigation method. The method comprises the following steps of: arranging a sensor node at an indoor scene, arranging a detection node on a corridor and arranging guide nodes on an intersection and an exit; transmitting detected information of the personnel number to the guide node by using the detection node and calculating the average speed of indoor personnel walking through each corridor and further calculating a weight w by using the guide node; establishing a sensor network diagram G=(V, E, w); if the change value of the average speed of the indoor personnel walking through each corridor is more than a set threshold or a weight update pack transmitted by a neighboring node is received, updating the weight w by using the guide node; and adjusting a target node of the guide node according to the update of the weight w in the diagram G and guiding the indoor personnel to evacuate along an optimal path. Indoor navigation is modeled into a dynamical network diagram, personnel evacuation is described as the movement of network fluid and a shortest path in a network is maintained dynamically so as to realize personnel evacuation with the shortest time.
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Description

technical field

[0001] The invention belongs to the technical field of wireless sensor networks, relates to an indoor navigation method, in particular to a sensor network-oriented indoor emergency navigation method capable of sensing congestion. Background technique

[0002] At present, there are mainly two types of sensor network navigation: centralized and distributed. Among them, the centralized algorithm is mostly used in the situation where the surrounding environment is static or changes slowly, and constructs a navigation route for the mobile robot to cross obstacles. Although these centralized algorithms can accurately complete the navigation task, they are not suitable for situations where the environment changes dynamically. Quickly adjust the navigation route according to the actual situation. The distributed algorithm has high performance in a dynamic environment. The distributed navigation algorithm based on potential energy (Q.Li, M.D.Rosa, and D.Rus, Distribu...

Claims

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