| 主权项 |
1. A mobile monitoring device for monitoring a condition to which an object is exposed in transit, during which the monitoring device moves between multiple local networks, each of which including at least one or more fixed or mobile network managers, wherein the monitoring device is configured to dynamically join a peer-to-peer ad hoc network of a local network manager which is local to the monitoring device, the mobile monitoring device comprising:
a sensor module for monitoring the condition and periodically producing sensor module data relating to the condition, wherein the sensor module data includes inertial navigation data; a first transceiver component for receiving network manager data from the local network manager; an associator component for comparing the network manager data with the sensor module data and, if the network manager data approximates the sensor module data, establishing an association with the local network manager, during which association geographical location data of the local network manager is included in the network manager data and for, if the network manager data does not approximate the sensor module data and if an association with the local network manager is established, dissolving the association with the local network manager; and, an inertial navigation component for, responsive to the associator component dissolving the association, incrementally estimating a geographical location of the sensor module using, as an initial set-point, the geographical location data of the local network manager received immediately prior to the association being dissolved and the inertial navigation data produced by the sensor module of the monitoring device. |
