Devices, systems and methods for portable device location

摘要

Devices, systems, and methods are disclosed which relate to a network of RFID readers which detect a location of an RFID transmitter coupled to a portable device. The network of RFID readers transmits the location to a user. The RFID transmitter couples to any personal device and broadcasts a unique ID. The nearest RFID reader(s) receive the unique ID and alert a server in communication with the network of RFID readers. The server calculates the distance of the RFID transmitter from each RFID reader receiving the unique ID. The server triangulates the location of the RFID transmitter when three or more RFID readers are receiving the unique ID. The server then securely transmits the location of the RFID transmitter to the user of the portable device. The user receives the transmission through a secure receiver.

主权项

1. A portable device tracking server comprising:
a processor; and a memory that stores instructions that, when executed by the processor, cause the processor to perform operations comprising
receiving, from a computer, a request to locate a portable device comprising a radiofrequency identification transmitter;receiving, from three radiofrequency identification readers, three distances, wherein each of the three radiofrequency identification readers calculates a one of the three distances by
broadcasting a broadcast signal to an area,receiving, from the radiofrequency identification transmitter located in the area a response signal, andcalculating the one of the three distances by measuring a time for the radiofrequency identification transmitter to respond to the broadcast signal;determining, based upon the three distances calculated, a location of the portable device, wherein the location is determined using triangulation;transmitting the location determined to the computer via a secure receiver, wherein each of the three radiofrequency readers broadcasts the broadcast signal and waits for a response from the radiofrequency identification transmitter before a next of the three radiofrequency identification readers broadcasts the broadcast signal, wherein the portable device comprises a battery and a pair of exposed device electrical contacts configured to mate with a corresponding pair of exposed transmitter electrical contacts of the radiofrequency identification transmitter to power the radiofrequency identification transmitter via the battery.