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公开(公告)号：US20220082651A1
公开(公告)日：2022-03-17
申请号：US17532521
申请日：2021-11-22
Applicant: Automaton, Inc.
Inventor： Spencer Hewett , Adam Blair , Ken Seiff , Michael Murphy , Mark Wieman , Tamara Adlin
Abstract: A radio frequency identification (RFID) system includes an array of antennas to distinguish line-of-sight (LOS) paths from non-line-of-sight (NLOS) paths. The distance between adjacent antennas in the array of antennas is less than half the wavelength of the radio frequency (RF) signal of the system. Each antenna in the antenna array is also digitally controlled to change relative phase difference among the antennas, thereby allowing digital steering of the array of antennas across angles of arrival (AOAs) between 0 and π. The digital steering generates a plot of signal amplitudes as a function of AOAs. LOS paths are distinguished from NLOS paths based on the shapes (e.g., depth, gradient, etc.) of local extremes (e.g., maxima or minima) in the plot.
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公开(公告)号：US11043093B2
公开(公告)日：2021-06-22
申请号：US15995400
申请日：2018-06-01
Applicant: Automaton, Inc.
Inventor： Spencer Hewett
IPC: G08B13/24
Abstract: A system for RFID-based retail management that includes a set of antennas, an RFID transceiver connected to the set of antennas; and a microprocessor-based system manager that controls the RFID transceiver and transforms RFID response data from the RFID transceiver into RFID tag location data according to read probability methods.
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公开(公告)号：US10013860B2
公开(公告)日：2018-07-03
申请号：US14598615
申请日：2015-01-16
Applicant: Automaton, Inc.
Inventor： Spencer Hewett
IPC: G08B13/24
CPC classification number: G08B13/2428 , G08B13/2451
Abstract: A system for RFID-based retail management that includes a set of antennas, an RFID transceiver connected to the set of antennas; and a microprocessor-based system manager that controls the RFID transceiver and transforms RFID response data from the RFID transceiver into RFID tag location data according to read probability methods.
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公开(公告)号：US11915567B2
公开(公告)日：2024-02-27
申请号：US17346775
申请日：2021-06-14
Applicant: Automaton, Inc.
Inventor： Spencer Hewett
IPC: G08B13/24
CPC classification number: G08B13/2428 , G08B13/2451
Abstract: A system for RFID-based retail management that includes a set of antennas, an RFID transceiver connected to the set of antennas; and a microprocessor-based system manager that controls the RFID transceiver and transforms RFID response data from the RFID transceiver into RFID tag location data according to read probability methods.
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公开(公告)号：US20230130857A1
公开(公告)日：2023-04-27
申请号：US18065988
申请日：2022-12-14
Applicant: Automaton, Inc.
Inventor： Spencer Hewett
Abstract: A system and method for locating radio-frequency identification tags within a predetermined area. The method can incorporate sub-threshold superposition response mapping techniques, alone, or in combination with other methods for locating radio-frequency identification tags such as but not limited to time differential on arrival (TDOA), frequency domain phase difference on arrival (FD-PDOA), and radio signal strength indication (RSSI). The system can include a plurality of antennas dispersed in a predefined area; one or more radio-frequency identification tags; a radio-frequency transceiver in communication with said antennas; a phase modulator coupled to the radio-frequency transceiver; and a system controller in communication with said transceiver and said phase modulator. Calibration techniques can be employed to map constructive interference zones for improved accuracy.
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Patent Agency Ranking
公开(公告)号：US11408965B2
公开(公告)日：2022-08-09
申请号：US16717249
申请日：2019-12-17
Applicant: Automaton, Inc.
Inventor： Spencer Hewett , Adam Blair , Ken Seiff , Michael Murphy , Mark Wieman , Tamara Adlin
Abstract: A radio frequency identification (RFID) system includes an array of antennas to distinguish line-of-sight (LOS) paths from non-line-of-sight (NLOS) paths. The distance between adjacent antennas in the array of antennas is less than half the wavelength of the radio frequency (RF) signal of the system. Each antenna in the antenna array is also digitally controlled to change relative phase difference among the antennas, thereby allowing digital steering of the array of antennas across angles of arrival (AOAs) between 0 and π. The digital steering generates a plot of signal amplitudes as a function of AOAs. LOS paths are distinguished from NLOS paths based on the shapes (e.g., depth, gradient, etc.) of local extremes (e.g., maxima or minima) in the plot.
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公开(公告)号：US20210173073A1
公开(公告)日：2021-06-10
申请号：US17127039
申请日：2020-12-18
Applicant: Automaton, Inc.
Inventor： Spencer Hewett
Abstract: A system and method for locating radio-frequency identification tags within a predetermined area. The method can incorporate sub-threshold superposition response mapping techniques, alone, or in combination with other methods for locating radio-frequency identification tags such as but not limited to time differential on arrival (TDOA), frequency domain phase difference on arrival (FD-PDOA), and radio signal strength indication (RSSI). The system can include a plurality of antennas dispersed in a predefined area; one or more radio-frequency identification tags; a radio-frequency transceiver in communication with said antennas; a phase modulator coupled to the radio-frequency transceiver; and a system controller in communication with said transceiver and said phase modulator. Calibration techniques can be employed to map constructive interference zones for improved accuracy.
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公开(公告)号：US12164048B2
公开(公告)日：2024-12-10
申请号：US17532521
申请日：2021-11-22
Applicant: Automaton, Inc.
Inventor： Spencer Hewett , Adam Blair , Ken Seiff , Michael Murphy , Mark Wieman , Tamara Adlin
Abstract: A radio frequency identification (RFID) system includes an array of antennas to distinguish line-of-sight (LOS) paths from non-line-of-sight (NLOS) paths. The distance between adjacent antennas in the array of antennas is less than half the wavelength of the radio frequency (RF) signal of the system. Each antenna in the antenna array is also digitally controlled to change relative phase difference among the antennas, thereby allowing digital steering of the array of antennas across angles of arrival (AOAs) between 0 and π. The digital steering generates a plot of signal amplitudes as a function of AOAs. LOS paths are distinguished from NLOS paths based on the shapes (e.g., depth, gradient, etc.) of local extremes (e.g., maxima or minima) in the plot.
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公开(公告)号：US20240273986A1
公开(公告)日：2024-08-15
申请号：US18585919
申请日：2024-02-23
Applicant: Automaton, Inc.
Inventor： Spencer Hewett
IPC: G08B13/24
CPC classification number: G08B13/2428 , G08B13/2451
Abstract: A system for RFID-based retail management that includes a set of antennas, an RFID transceiver connected to the set of antennas; and a microprocessor-based system manager that controls the RFID transceiver and transforms RFID response data from the RFID transceiver into RFID tag location data according to read probability methods.
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公开(公告)号：US20240193381A1
公开(公告)日：2024-06-13
申请号：US18556541
申请日：2022-04-25
Applicant: Automaton, Inc.
Inventor： Thomas A. Brown, III , Joe Mueller , Adam Blair , Spencer Hewett , Prokopios Panagiotou
CPC classification number: G06K7/10237 , G01S13/08 , G01S13/84
Abstract: Radio-frequency identification (RFID) systems use readers to query and locate passive RFID tags in stores, warehouses, and other environments. A signal from the reader powers up the tag, which modulates and backscatters the signal toward the reader. Unfortunately, the maximum permitted RF signal power, self-interference at the reader, tag sensitivity, and channel loss limit the range at which readers can detect and locate tags. Using multiple readers simultaneously circumvents these limits. When used together, each reader transmits a signal to a tag in turn, and all of the readers listen for each of the tag's responses. The readers that are not transmitting do not experience self-interference and so can detect responses at lower power levels (longer ranges). Because the readers are at different locations, they measure different angles of arrival (AOAs) for each response. These simultaneous measurements can be used to locate each tag faster and with higher fidelity.
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