A beacon detection system which can locate a missing search subject includes: a beacon signal receiver; a location position detector; and a beacon detector. The detector is configured to detect a location of a broadcasting beacon signal associated with a personal device of a search subject within search data covering a geographic search area derived from a search for the search subject, the search data gathered by the beacon signal receiver and location position detector. A computer implemented method of determining a location of a search subject is also provided. The method determines at least a possible connection request from Wi-Fi signals in search data gathered by a Wi-Fi radio covering a geographic search area for a search subject and associated location information to locate the search subject.

A beacon detection system which can locate a missing search subject includes: a beacon signal receiver; a location position detector; and a beacon detector. The detector is configured to detect a location of a broadcasting beacon signal associated with a personal device of a search subject within search data covering a geographic search area derived from a search for the search subject, the search data gathered by the beacon signal receiver and location position detector. A computer implemented method of determining a location of a search subject is also provided. The method determines at least a possible connection request from Wi-Fi signals in search data gathered by a Wi-Fi radio covering a geographic search area for a search subject and associated location information to locate the search subject.

Disclosed is a device, system, and method utilizing augmented-reality (AR) for safety. The AR safety system generates hazard-response messages in response to sensor data in order to help users understand and response to hazards in work environments in an intuitive and effective way. The AR safety system fuses a plurality of technologies. These technologies include person location/tracking, hazard detection/tracking, and augmented reality (i.e., AR).

A geo-fencing system (102) includes a base device (104) configured to create a virtual fence (108) around the base devise that bounds a safe zone (110). The geo-fencing system further includes a wearable device (106) initially located within the safe zone. The geo-fencing system further includes a processor configured to execute a dynamic adaptive control algorithm that computes at least one operating parameter for at least one of the base device and the wearable device based on a dynamic and adaptive combination of different signals indicative of distance measurements between the wearable device and the base device computed by the at least one of the base device and the wearable device. The processor conveys the at least one operating parameter to the at least one of the base device and the wearable device, which employs the at least one operating parameter for operation and determination of subsequent distance measurements.

In one embodiment, an apparatus is presented that detects wireless signals from external devices that uniquely identify each of the external devices, records, in memory, information about the external devices without access to an external database, and compares information from the external devices to determine a relative location of the wearable device without using additional, power-hungry position location functionality if there is a threshold match in the compared information. In some embodiments, the invention uses the determined relative location to trigger an action at another device. The invention, using self-contained functionality, enables improvements in same location or home location determination accuracy, memory conservation, and power consumption.

A system and method for determining a position of a first responder in a building, where the first responder is using a radio, and using a distributed antenna system. Each antenna has a level detector to detect and measure a strength of an input signal from the radio of the first responder to produce a level signal, a time tagger to tag the detected input signal with a timing signal, and a communication module to transmit the level signal and timing signal. A sensor processor connected with a signal distribution network is configured to receive the signal level and timing signal from the signal distribution network of each of the plurality of antennas, to determine the position of the radio relative to each of the plurality of antennas according to the level signal and timing signal.

During an evacuation situation in a building that is equipped with an elevator system and in which a plurality of fixed point markers are arranged at defined sites, an escape route is transmitted to a person by means of a mobile device. The fixed point markers store data that can be received by the mobile device. An instantaneous position of the mobile device can be determined when the mobile device uses data received from a fixed point marker to access a database in which the data is linked to a site of the fixed point marker. The ascertainment of the escape route to a destination is based on the instantaneous position of the mobile device. The person is registered on reaching the destination when the mobile device is detected at the destination.

An improved D.C. power supply for an emergency locator transmitter ELT mounted on an aircraft that does not require lithium batteries but instead uses conventional alkaline batteries in conjunction with a supercapacitor network to provide a reliable power source even when the ELT that is airborne is subjected to extreme cold temperatures that can affect the alkaline battery operation. Alkaline battery pack with a 12 V output is connected to a supercapacitor network board. The supercapacitors are charged when the ELT is activated ON using the comparator network.

This disclosure is directed to generating and sending an emergency notification short message service (SMS) message to one or more registered contacts of a user when the user's user equipment (UE) is used to call enhanced 911 (E911). The E911 call may be placed either as a voice over long term evolution (VoLTE) or as a voice over WiFi (VoWiFi) call. The emergency contacts may be previously designated by the user, and saved to a profile associated with the user. When the user calls E911, a gateway mobile location center (GMLC) system may cooperate with one or more other components of a mobile communications network to route the E911 call to a nearby public safety answering point (PSAP) based at least in part on location information of the UE from which the E911 call was placed. This same location information may be provided in the emergency notification SMS message.

The present invention discloses an extendable antenna for a portable communication device, made of two radiating wires each shaped as an open loop; a first loop fixed and a second loop movable between two positions: in parallel or alternatively vertically to the first loop; the parallel position suitable for compactly carrying the device in non-active mode, and the vertical combination configured to produce a substantially isotropic radiation pattern, particularly instrumental for satellite communications. According to one embodiment, this device is a satellite served Personal Locator Beacon (PLB) for Search and Rescue (SAR) of people in distress, configured to be wrist worn.