公开(公告)号：US09748632B2

公开(公告)日：2017-08-29

申请号：US15470512

申请日：2017-03-27

申请人： RFMicron, Inc.

发明人： Shahriar Rokhsaz ,  Brian David Young ,  Ahmed Younis ,  John J. Paulos ,  Abhay Misra ,  Benjamin Cooke ,  Marwan Hassoun

IPC分类号： H01Q1/22 ,  H01Q5/335 ,  G06K19/077

CPC分类号： H01Q1/2225 ,  G06K7/10148 ,  G06K7/10326 ,  G06K19/0716 ,  G06K19/0717 ,  G06K19/0726 ,  G06K19/07788 ,  H01Q5/335

摘要： A wireless sensor includes an antenna, a sensing element, a tuning circuit, a processing module, a reference circuit block, and a transmitter. The tuning circuit adjusts the RF front-end to compensation for a change in a characteristic of the RF front end caused by the sensing element. The reference circuit block generates a signal based on a low voltage low frequency input that corresponds to a second environmental condition. The processing module generates a first digital value based on the adjustment to the RF front-end, where the first digital value is a representation of the first environmental condition, and generate a second digital value based on the signal, where the second digital value is a representation of the second environmental condition. The transmitter generates the outbound RF signal that includes at least one of the first and second digital values.

公开(公告)号：US20170201004A1

公开(公告)日：2017-07-13

申请号：US15470512

申请日：2017-03-27

申请人： RFMicron, Inc.

发明人： Shahriar Rokhsaz ,  Brian David Young ,  Ahmed Younis ,  John J. Paulos ,  Abhay Misra ,  Benjamin Cooke ,  Marwan Hassoun

IPC分类号： H01Q1/22 ,  G06K19/077 ,  H01Q5/335

CPC分类号： H01Q1/2225 ,  G06K7/10148 ,  G06K7/10326 ,  G06K19/0716 ,  G06K19/0717 ,  G06K19/0726 ,  G06K19/07788 ,  H01Q5/335

摘要： A wireless sensor includes an antenna, a sensing element, a tuning circuit, a processing module, a reference circuit block, and a transmitter. The tuning circuit adjusts the RF front-end to compensation for a change in a characteristic of the RF front end caused by the sensing element. The reference circuit block generates a signal based on a low voltage low frequency input that corresponds to a second environmental condition. The processing module generates a first digital value based on the adjustment to the RF front-end, where the first digital value is a representation of the first environmental condition, and generate a second digital value based on the signal, where the second digital value is a representation of the second environmental condition. The transmitter generates the outbound RF signal that includes at least one of the first and second digital values.

公开(公告)号：US10243255B2

公开(公告)日：2019-03-26

申请号：US15686994

申请日：2017-08-25

申请人： RFMicron, Inc.

发明人： Shahriar Rokhsaz ,  Brian David Young ,  Ahmed Younis ,  John J. Paulos ,  Abhay Misra ,  Benjamin Cooke ,  Marwan Hassoun

IPC分类号： H01Q1/22 ,  G06K7/10 ,  G06K19/07 ,  H01Q5/335 ,  G06K19/077

摘要： A method begins by a first radio frequency identification (RFID) sensor, that is associated with a first object element, receiving a first data request signal from an RFID reader and sending a first radio frequency (RF) signal that includes first data to the RFID reader in response to the first data request signal. The method continues with a second RFID sensor receiving a second data request signal from, and sending second data to, the RFID reader. The method continues with the RFID reader sending a representation of the first and second data to a data processing unit, which processes the representation of the first and second data to determine a first and second data point regarding first and second object elements. The method continues by the data processing unit processing the first and second data points to determine an environmental relationship between the first and second object elements.

公开(公告)号：US20180040939A1

公开(公告)日：2018-02-08

申请号：US15686994

申请日：2017-08-25

申请人： RFMicron, Inc.

发明人： Shahriar Rokhsaz ,  Brian David Young ,  Ahmed Younis ,  John J. Paulos ,  Abhay Misra ,  Benjamin Cooke ,  Marwan Hassoun

IPC分类号： H01Q1/22 ,  G06K19/077

CPC分类号： H01Q1/2225 ,  G06K7/10148 ,  G06K7/10326 ,  G06K19/0716 ,  G06K19/0717 ,  G06K19/0726 ,  G06K19/07788 ,  H01Q5/335

摘要： A method begins by a first radio frequency identification (RFID) sensor, that is associated with a first object element, receiving a first data request signal from an RFID reader and sending a first radio frequency (RF) signal that includes first data to the RFID reader in response to the first data request signal. The method continues with a second RFID sensor receiving a second data request signal from, and sending second data to, the RFID reader. The method continues with the RFID reader sending a representation of the first and second data to a data processing unit, which processes the representation of the first and second data to determine a first and second data point regarding first and second object elements. The method continues by the data processing unit processing the first and second data points to determine an environmental relationship between the first and second object elements.

公开(公告)号：US09607188B2

公开(公告)日：2017-03-28

申请号：US14869940

申请日：2015-09-29

申请人： RFMicron, Inc.

发明人： Shahriar Rokhsaz ,  Brian David Young ,  Ahmed Younis ,  John J. Paulos ,  Abhay Misra ,  Benjamin Cooke ,  Marwan Hassoun

IPC分类号： G06K7/10 ,  G06K19/07

CPC分类号： H01Q1/2225 ,  G06K7/10148 ,  G06K7/10326 ,  G06K19/0716 ,  G06K19/0717 ,  G06K19/0726 ,  G06K19/07788 ,  H01Q5/335

摘要： A passive radio frequency identification (RFID) sensor is provided. This passive RFID sensor includes at least one antenna, at least one processing module, and a wireless communication module. The at least one antenna has an impedance that may vary with an environment in which the sensor is placed. Additionally, the antenna impedance might be permanently changed in response to an environmental variation or an event. The at least one processing module couples to the antenna and has a tuning module that may vary a reactive component impedance coupled to the antenna in order to change a system impedance. The system impedance includes both the antenna impedance and the reactive component impedance. The tuning module then produces an impedance value representative of the reactive component impedance. A memory module may store the impedance value which may then later be communicated to an RFID reader via the wireless communication module. The RFID reader may then exchange the impedance value representative of the reactive components of impedance with the RFID reader such that the RFID reader or another external processing unit may process the impedance value in order to determine environmental conditions at the inductive loop. These environmental conditions may include but are not limited to temperature, humidity, wetness, or proximity of the RFID reader to the passive RFID sensor.