Patent application number | Description | Published |
20080243418 | Method Of Calibrating A Fluid-Level Measurement System - A method of calibrating a fluid-level measurement system is provided. A first response of the system is recorded when the system's sensor(s) is (are) not in contact with a fluid of interest. A second response of the system is recorded when the system's sensor(s) is (are) fully immersed in the fluid of interest. Using the first and second responses, a plurality of expected responses of the system's sensor(s) is (are) generated for a corresponding plurality of levels of immersion of the sensor(s) in the fluid of interest. | 10-02-2008 |
20090072814 | Wireless System And Method For Collecting Rotating System Data - A wireless system for collecting data indicative of a tire's characteristics uses at least one open-circuit electrical conductor in a tire. The conductor is shaped such that it can store electrical and magnetic energy. In the presence of a time-varying magnetic field, the conductor resonates to generate a harmonic response having a frequency, amplitude and bandwidth. A magnetic field response recorder is used to (i) wirelessly transmit the time-varying magnetic field to the conductor, and (ii) wirelessly detect the harmonic response and the frequency, amplitude and bandwidth, associated therewith. The recorder is adapted to be positioned in a location that is fixed with respect to the tire as the tire rotates. | 03-19-2009 |
20090109005 | Wireless Damage Location Sensing System - A wireless damage location sensing system uses a geometric-patterned wireless sensor that resonates in the presence of a time-varying magnetic field to generate a harmonic response that will experience a change when the sensor experiences a change in its geometric pattern. The sensing system also includes a magnetic field response recorder for wirelessly transmitting the time-varying magnetic field and for wirelessly detecting the harmonic response. The sensing system compares the actual harmonic response to a plurality of predetermined harmonic responses. Each predetermined harmonic response is associated with a severing of the sensor at a corresponding known location thereof so that a match between the actual harmonic response and one of the predetermined harmonic responses defines the known location of the severing that is associated therewith. | 04-30-2009 |
20090277789 | Wireless Chemical Sensor and Sensing Method for Use Therewith - A wireless chemical sensor includes an electrical conductor and a dielectric material on the conductor. The conductor is electrically unconnected and is shaped for storage of an electric field and a magnetic field. In the presence of a time-varying magnetic field, the conductor resonates to generate harmonic electric and magnetic field responses, each of which has a frequency associated therewith. The dielectric material is selected such that it experiences changes in dielectric attributes thereof in the presence of a chemical-of-interest. Shifts from the sensor's baseline frequency response indicate that the dielectric material has been exposed to the chemical-of-interest. | 11-12-2009 |
20090302111 | Wireless tamper detection sensor and sensing system - A wireless tamper detection sensor is defined by a perforated electrical conductor. The conductor is shaped to form a geometric pattern between first and second ends thereof such that the conductor defines an open-circuit that can store and transfer electrical and magnetic energy. The conductor resonates in the presence of a time-varying magnetic field to generate a harmonic response. The harmonic response changes when the conductor experiences a change in its geometric pattern due to severing of the conductor along at least a portion of the perforations. A magnetic field response recorder is used to wirelessly transmit the time-varying magnetic field and wirelessly detecting the conductor's harmonic response. | 12-10-2009 |
20090315546 | Magnetic Field Response Sensor For Conductive Media - A magnetic field response sensor comprises an inductor placed at a fixed separation distance from a conductive surface to address the low RF transmissivity of conductive surfaces. The minimum distance for separation is determined by the sensor response. The inductor should be separated from the conductive surface so that the response amplitude exceeds noise level by a recommended 10 dB. An embodiment for closed cavity measurements comprises a capacitor internal to said cavity and an inductor mounted external to the cavity and at a fixed distance from the cavity's wall. An additional embodiment includes a closed cavity configuration wherein multiple sensors and corresponding antenna are positioned inside the cavity, with the antenna and inductors maintained at a fixed distance from the cavity's wall. | 12-24-2009 |
20100109818 | Wireless Electrical Device Using Open-Circuit Elements Having No Electrical Connections - A wireless electrical device includes an electrically unconnected electrical conductor and at least one electrically unconnected electrode spaced apart from the electrical conductor. The electrical conductor is shaped for storage of an electric field and a magnetic field. In the presence of a time-varying magnetic field, the electrical conductor so-shaped resonates to generate harmonic electric and magnetic field responses. Each electrode is at a location lying within the magnetic field response so-generated and is constructed such that a linear movement of electric charges is generated in each electrode due to the magnetic field response so-generated. | 05-06-2010 |
20100233821 | Wireless Chemical Sensor and Sensing Method for Use Therewith - A wireless chemical sensor includes an electrical conductor and a material separated therefrom by an electric insulator. The electrical conductor is an unconnected open-circuit shaped for storage of an electric field and a magnetic field. In the presence of a time-varying magnetic field, the first electrical conductor resonates to generate harmonic electric and magnetic field responses. The material is positioned at a location lying within at least one of the electric and magnetic field responses so-generated. The material changes in electrical conductivity in the presence of a chemical-of-interest. | 09-16-2010 |
20110274139 | Wireless Temperature Sensing Having No Electrical Connections and Sensing Method for Use Therewith - A wireless temperature sensor includes an electrical conductor and a dielectric material on the conductor. The conductor is electrically unconnected and is shaped for storage of an electric field and a magnetic field. In the presence of a time-varying magnetic field, the conductor resonates to generate harmonic electric and magnetic field responses, each of which has a frequency associated therewith. The material is selected such that it experiences changes in either dielectric or magnetic permeability attributes in the presence of a temperature change. Shifts from the sensor's baseline frequency response indicate that the material has experienced a temperature change. | 11-10-2011 |
20130033271 | Wireless Open-Circuit In-Plane Strain and Displacement Sensor Requiring No Electrical Connections - A wireless in-plane strain and displacement sensor includes an electrical conductor fixedly coupled to a substrate subject to strain conditions. The electrical conductor is shaped between its ends for storage of an electric field and a magnetic field, and remains electrically unconnected to define an unconnected open-circuit having inductance and capacitance. In the presence of a time-varying magnetic field, the electrical conductor so-shaped resonates to generate harmonic electric and magnetic field responses. The sensor also includes at least one electrically unconnected electrode having an end and a free portion extending from the end thereof. The end of each electrode is fixedly coupled to the substrate and the free portion thereof remains unencumbered and spaced apart from a portion of the electrical conductor so-shaped. More specifically, at least some of the free portion is disposed at a location lying within the magnetic field response generated by the electrical conductor. A motion guidance structure is slidingly engaged with each electrode's free portion in order to maintain each free portion parallel to the electrical conductor so-shaped. | 02-07-2013 |
20130342326 | SYSTEMS, APPARATUSES, AND METHODS FOR TRANSPARENT AND UBIQUITOUS SENSING TECHNOLOGY - One feature pertains to a sensor apparatus that comprises a conductor configured to perform at least one operation unrelated to the sensor apparatus. These operations may include at least one of providing structural support to a system unrelated to the sensor apparatus, and/or providing a non-sensing signal to the system unrelated to the sensor apparatus. The sensor apparatus also comprises at least one sensor configured to perform a sensing operation for the sensor apparatus that generates sensor data, and an interrogation circuit configured to interrogate the sensor by transmitting an interrogation signal to the sensor via the conductor. The sensor apparatus further comprises a processing circuit that receives from the sensor via the conductor a sensor response signal that includes the sensor data, where the sensor response signal is received in response to interrogating the sensor. | 12-26-2013 |
20130342356 | APPARATUSES, SYSTEMS, AND METHODS FOR SIGNAL COMMUNICATION ACROSS AN ELECTROMAGNETIC SHIELD - One feature pertains to an apparatus for communicating signals across an electromagnetic (EM) shield. The apparatus includes a first communication interface positioned at a first side of the EM shield that receives a first signal containing data, where the first signal is incapable of being transmitted across the EM shield. The apparatus also includes a processing circuit positioned at the EM shield's first side that generates a control signal based on the first signal. The apparatus further includes a transducer positioned at the EM shield's first side that receives the control signal, generates a second signal containing the data based on the control signal, and transmits the second signal across the EM shield to a second side of the EM shield. The apparatus may further include a second signal receiver positioned at the second side of the EM shield that receives the transmitted second signal from the first transducer. | 12-26-2013 |
20140199774 | Wireless Chemical Sensor and Sensing Method for Use Therewith - A wireless chemical sensor includes an electrical conductor and a material separated therefrom by an electric insulator. The electrical conductor is an unconnected open-circuit shaped for storage of an electric field and a magnetic field. In the presence of a time-varying magnetic field, the first electrical conductor resonates to generate harmonic electric and magnetic field responses. The material is positioned at a location lying within at least one of the electric and magnetic field responses so-generated. The material changes in electrical conductivity in the presence of a chemical-of-interest. | 07-17-2014 |
20140269825 | Wireless Temperature Sensor Having No Electrical Connections and Sensing Method for Use Therewith - A wireless temperature sensor includes an electrical conductor and a material spaced apart from the conductor and located within one or more of the responding electric field and responding magnetic field of the conductor. The conductor is electrically unconnected and is shaped for storage of an electric field and a magnetic field. In the presence of a time-varying magnetic field, the conductor resonates to generate harmonic electric and magnetic field responses, each of which has a frequency associated therewith. The material is selected such that it experiences changes in one of dielectric properties and magnetic permeability properties in the presence of a temperature change. Shifts from the sensor's baseline frequency response indicate that the material has experienced a temperature change. | 09-18-2014 |