Patent application number | Description | Published |
20080263647 | System and Method For Providing Network Device Authentication - A secure framework for wireless sensor networks. The framework provides a system and method for providing network device authentication. The system and method comprises installing a unique device key in a network device and creating a chain of keys, wherein each subsequent key is encrypted using the previous key. The method executes an authentication process for storing and issuing keys, wherein the authentication process uses a unique device key to install a device site key in the network device and uses the device site key and the unique device key to authenticate the network device for communicating with a wireless network router, wherein the wireless network router creates a unique network-device-router key. The unique network-device-router key is used to authenticate the network device for communicating over the wireless network using an encrypted network session key and allows secure encrypted link-layer communications over the wireless network. | 10-23-2008 |
20100156629 | MEMS DEVICES AND REMOTE SENSING SYSTEMS UTILIZING THE SAME - A remote sensing system comprises a micro-electromechanical sensor (MEMS) device comprising a sensing element, an exciting element to resonate the sensing element at resonant frequency from a remote location by transmitting signals comprising any of acoustic signals, optical signals, radio frequency signals, or magnetic induction signals, and a reader circuitry to read an original frequency of the sensing element from a remote location for determining a condition to which the MEMS device is exposed using signals comprising any of acoustic signals, optical signals, radio frequency signals, or magnetic induction signals. | 06-24-2010 |
20110038268 | SYSTEMS AND METHODS FOR SHORT RANGE RF COMMUNICATION - A method transmitting a message over at least one of a plurality of channels of a communications network is provided. The method comprises the steps of detecting a presence of jamming pulses in the at least one of the plurality of channels. The characteristics of the jamming pulses in the at least one of the plurality of channels is determined wherein the determined characteristics define at least interstices between the jamming pulses. The message is transmitted over the at least one of the plurality of channels wherein the message is transmitted within the interstices of the jamming pulse determined from the step of determining characteristics of the jamming pulses. | 02-17-2011 |
20120105246 | CONTACTLESS UNDERWATER COMMUNICATION DEVICE - This invention provides, inter alia, communication devices for contactless underwater data transmission and reception. In one embodiment the present invention provides a transmitting device comprising (a) a water-tight housing; (b) a radiative element disposed outside of the housing, said radiative element comprising at least two antennae, wherein the radiative element is configured to propagate an electric field signal through water; and (c) a communications section disposed within the housing, said communications section being coupled to said radiative element, said communications section comprising at least one transmitter, wherein the communications section is configured to transmit digitally modulated data as an electric field signal propagated by the radiative element. Also provided are similarly constituted receiving devices, transceiving devices, systems containing such devices and methods of using such devices and systems. | 05-03-2012 |
20130117472 | METHODS AND APPARATUS FOR DETERMINING A LOCATION OF A COMPONENT - A device for use in determining a location of a component of a system includes a communication interface configured to transmit at least one signal to the component, a display, and a processor coupled to the communication interface and to the display. The processor is programmed to display a representation of the system on the display, display an expected location of the component within the representation, and transmit the at least one signal to the component using the communication interface for use in determining an actual location of the component. | 05-09-2013 |
20140052410 | CREEP LIFE MANAGEMENT SYSTEM FOR A TURBINE ENGINE AND METHOD OF OPERATING THE SAME - A creep life management system includes at least one sensor apparatus coupled to a first component. The at least one sensor apparatus is configured with a unique identifier. The creep life management system also includes at least one reader unit coupled to a second component. The at least one reader unit is configured to transmit an interrogation request signal to the at least one sensor apparatus and receive a measurement response signal transmitted from the at least one sensor apparatus. The creep life management system further includes at least one processor programmed to determine a real-time creep profile of the first component as a function of the measurement response signal transmitted from the at least one sensor apparatus. | 02-20-2014 |
20150204182 | METHOD AND SYSTEM FOR DETERMINATION OF PIPE LOCATION IN BLOWOUT PREVENTERS - A system to detect a position of a pipe with respect to a BOP includes a casing disposed around an outer surface of a section of the pipe. The system further includes sensing devices that are disposed on the casing and arranged to form a plurality of arrays and configured to generate position signals. The arrays are disposed circumferentially around the casing and spaced from one another along the length of the casing. The system includes a processing unit configured to compute distance between the pipe and each sensing device. The processing unit generates a first alert when the distance between the pipe and at least one sensing device is different from a reference distance. The processing unit generates a second alert when the distance between the pipe and each sensing device of at least one array of sensing devices is different from the reference distance. | 07-23-2015 |
20150322813 | EMBEDDED WIRELESS SENSORS FOR TURBOMACHINE COMPONENT DEFECT MONITORING - Various embodiments include detection systems adapted to monitor at least one physical property of a component in a turbomachine. In some embodiments a detection system includes at least one sensor configured to be affixed to a component of a turbomachine, the at least one sensor for sensing information regarding at least one physical property of the turbomachine component during operation of the turbomachine, a signal converter communicatively coupled to the at least one sensor and at least one RF communication device configured to be affixed to a stationary component of the turbomachine, the radio frequency communication device configured to communicate with the at least one signal converter via an RF antenna coupled to the signal converter. | 11-12-2015 |