摘要:
The system method described herein could guide people around urban environments indoor and outdoor, provide accurate update and real time emergency notification and information to the building occupants or to the emergency designated area to his cellular phone, We have focused on the task of providing a real time emergency information and navigation along the emergency exit route, The information will be received directly and will display on the existing cellular phone as Bluetooth application.
摘要:
This invention provides a method for locating a lost object by utilizing a stripped down cell-phone transceiver which is controlled in an on-off periodicity by an independent timer which is always on, and also has a low power GPS module. The invention provides for a software application to reside, for example, in an I-phone® and to interrogate the stripped down cell phone transceiver which is attached to the lost object and to display the lost object's location on a scalable map.
摘要:
The present invention relates to a method for measuring a location of a radio frequency identification (RFID) reader by using beacons, and an RFID system for measuring a location of a moving RFID reader in an RFID system comprising: a plurality of beacon devices for emitting beacons; an RFID tag for transmitting pre-stored information by using radio frequency identification; and an RFID reader for calculating a current location using a plurality of at least three beacons wherein the RFID reader receives the plurality of beacons from the plurality of beacon devices while moving, and receiving the information from the RFID tag by using the radio frequency identification. According to the present invention, it is possible to increase the accuracy of the location measurement of a moving RFID reader in an RFID system because the location of the RFID reader is measured in consideration of propagation environments.
摘要:
Systems and methods for determining a direction and range, at a predetermined level of granularity, for a transmitting device in a communications system are presented. Determinations, based on indicia related to the signal conditions, information contained in the received signals, and/or inferences surrounding the transmission conditions can be employed in identifying a transmitter, determining the range and direction of a transmitter and/or identifying a relative location of a transmitter without relaying, retransmitting, and/or conveying the transmitted and received signal across a supporting communications network. These determinations can be formed centrally at the transmitting or receiving user equipment or mobile device or formed in a distributed manner between the transmitting and receiving user equipment or mobile devices across a communications system.
摘要:
Methods and apparatus to provide sonobuoys that can be deployed on a sea bottom and surface upon detection of an object of interest. Upon reaching the surface, the sonobuoy can transmit information, such as position information, to a receiver on an aircraft, satellite, and/or remote location.
摘要:
An Emergency Position Indicating Radio Beacon (EPIRB) comprising an integrated wireless receiver, a graphical display device, capability to utilize both internal and external GPS coordinate sources, an infrared background lighting adjustment algorithm, and a multi-LED strobe light array. The receiver provides a return communications path back to the beacon, which is used to acknowledge the receipt of the beacon's outgoing emergency signal by Search and Rescue satellites. The display is used to visually display various operational status information as well as any received messages coming back into the receiver. The GPS receiver system switches between internally derived and/or externally supplied GPS coordinates. The present invention also incorporates an Automatic Background Light Adjustment (ABLA) algorithm to compensate for the maximum range of light intensity encountered by infrared communications LEDs during daytime and nighttime operation. Additionally, a multi-LED array is used to flash a signaling strobe in a universal hemispherical pattern.
摘要:
A system, including: an electrical network fitted to a building, for distributing electrical power within the building to make the building operational, the network comprising a plurality of nodes for outputting the electrical power each node comprising a receptacle for receiving a lighting element; and a plurality of radio devices, retrofitted to the operational building, wherein each of the radio devices is operable, when powered via a respective node of the network, to transmit data relating to positioning.
摘要:
A position determining system for a vehicle comprises an imaging unit for collecting image data. A wireless device reads or interrogates a radio frequency identification tag. An identification module determines whether the collected image data contains a visual landmark. A confirmation module determines whether the identified visual landmark is associated with a corresponding radio frequency identification tag having a particular tag identifier. A range finder or distance estimator determines a position offset of the vehicle with respect to the identified visual landmark. A data processor determines a vehicular position of the vehicle based on the determined position offset and a stored reference position associated with at least one of the visual landmark and the radio frequency identification tag.
摘要:
Systems and methods are provided for two-stage location. In one implementation, there is provided a method for receiving a first location of a first radio, the first radio providing the first location of the first radio; using the received first location to determine when to transmit an activation command from a portable locator to a second radio, the second radio coupled to the first radio; and receiving at the portable locator a beacon transmitted to enable the portable locator to precisely locate the second radio and the coupled first radio.
摘要:
A method of determining a location is provided. The method comprises placing a plurality of radio frequency (RF) tags within an area, mapping the placement of the plurality of RF tags within the area, detecting one or more of the plurality of RF tags in the area, and determining a location based in part on the mapping and on probability distributions associated with each of the one or more detected RF tags.