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公开(公告)号：US12111397B2
公开(公告)日：2024-10-08
申请号：US17303061
申请日：2021-05-19
发明人： Wade Oberpriller
IPC分类号： G01S17/58 , B65G13/00 , G01S7/481 , G01S7/497 , G01S17/06 , G01S17/42 , G01S17/48 , G01S17/89
CPC分类号： G01S17/58 , G01S7/4814 , G01S7/4816 , G01S7/4972 , G01S17/06 , G01S17/42 , G01S17/48 , G01S17/89 , B65G13/00 , B65G2203/0233 , B65G2203/044
摘要： Apparatus and associated methods relate to a field-adjustable distance sensor configured to translate a transfer function of the sensor by a substantially constant value in a position domain by calibration at one or more known distances. In an illustrative example, the transfer function may correlate multiple distances to corresponding position vectors describing a position of a light signal on a receiver. The receiver may, for example, generate a detection signal corresponding to a position on the receiver of a light signal reflected off a target. A control circuit may, for example, generate a position vector in response to the detection signal. A calibration constant (C) may be generated, for example, as a function of a known distance of the target and position vector. C may be applied, for example, to translate the transfer function in the position domain. Various embodiments may advantageously reduce non-linear error in a distance sensor.
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公开(公告)号：US11709244B2
公开(公告)日：2023-07-25
申请号：US17036255
申请日：2020-09-29
发明人： Ashley Wise , Chunmei Kang , Wade Oberpriller
CPC分类号： G01S13/342 , G01S13/347 , G01S7/352
摘要： Apparatus and associated methods relate to enabling a radar system to use different sensing mechanisms to estimate a distance from a target based on different detection zones (e.g., far-field and near-field). In an illustrative example, a curve fitting method may be applied for near-field sensing, and a Fourier transform may be used for far-field sensing. A predetermined set of rules may be applied to select when to use the near-field sensing mechanism and when to use the far-field mechanism. The frequency of a target signal within a beat signal that has less than two sinusoidal cycles may be estimated with improved accuracy. Accordingly, the distance of a target that is within a predetermined distance range (e.g., two meters range for 24 GHz ISM band limitation) may be reliably estimated.
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公开(公告)号：US12078725B2
公开(公告)日：2024-09-03
申请号：US17654010
申请日：2022-03-08
CPC分类号： G01S17/58 , G01S7/4814 , G01S7/4816 , G01S7/4972 , G01S17/06 , G01S17/42 , G01S17/89 , B65G13/00 , B65G2203/0233 , B65G2203/044
摘要： Apparatus and associated methods relate to detecting jams when an intensity of a reflected signal exceeds a predetermined intensity threshold and an intensity window metric based on historic intensity value(s) fails to exceed an intensity window threshold for more than a predetermined time threshold. In an illustrative example, a jam detection unit (JDU) may emit a signal and detect a reflection of the signal. The JDU may, for example, compare intensity of the reflected signal to the intensity threshold. The JDU, for example, may compare the intensity threshold with at least one historic intensity value to determine the intensity window metric. If the intensity value exceeds the intensity threshold and the intensity window metric has not exceeded the intensity window threshold for longer than the time threshold, then the JDU may, for example, generate a jam signal. Various embodiments may advantageously detect jams based on intensity of a reflected signal.
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公开(公告)号：US20220291382A1
公开(公告)日：2022-09-15
申请号：US17654010
申请日：2022-03-08
摘要： Apparatus and associated methods relate to detecting jams when an intensity of a reflected signal exceeds a predetermined intensity threshold and an intensity window metric based on historic intensity value(s) fails to exceed an intensity window threshold for more than a predetermined time threshold. In an illustrative example, a jam detection unit (JDU) may emit a signal and detect a reflection of the signal. The JDU may, for example, compare intensity of the reflected signal to the intensity threshold. The JDU, for example, may compare the intensity threshold with at least one historic intensity value to determine the intensity window metric. If the intensity value exceeds the intensity threshold and the intensity window metric has not exceeded the intensity window threshold for longer than the time threshold, then the JDU may, for example, generate a jam signal. Various embodiments may advantageously detect jams based on intensity of a reflected signal.
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公开(公告)号：US20210118154A1
公开(公告)日：2021-04-22
申请号：US17072028
申请日：2020-10-15
发明人： Wade Oberpriller , Paul D. Bratton , Jeff Bromen
摘要： Apparatus and associated methods relate to a method of non-contact motion detection. A one-dimensional optical sensor detects motion of a target or objects on a conveyor belt through a continuous measurement of targets or objects and a real-time comparison of the pixel images captured by the one-dimensional optical sensor. In an illustrative embodiment, a one-dimensional sensor may be configured to determine motion of objects based on changes to the captured intensities of pixel images over time. The sensor may continually capture photoelectric pixel images and compare a current pixel image with a previous pixel image to determine a frame differential image value. The frame differential image value is evaluated against a predetermined threshold over a predetermined time period. Based on the evaluation, a signal is output indicating whether the objects on the conveyor belt are moving or jammed.
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公开(公告)号：US11854216B2
公开(公告)日：2023-12-26
申请号：US18047958
申请日：2022-10-19
发明人： Wade Oberpriller , Paul D. Bratton , Jeff Bromen
CPC分类号： G06T7/285 , G01S13/75 , G01S13/878 , G06T7/20 , G06T7/246 , G01S13/00 , G01S13/751 , G06T2207/10016
摘要： Apparatus and associated methods relate to a method of non-contact motion detection. A one-dimensional optical sensor detects motion of a target or objects on a conveyor belt through a continuous measurement of targets or objects and a real-time comparison of the pixel images captured by the one-dimensional optical sensor. In an illustrative embodiment, a one-dimensional sensor may be configured to determine motion of objects based on changes to the captured intensities of pixel images over time. The sensor may continually capture photoelectric pixel images and compare a current pixel image with a previous pixel image to determine a frame differential image value. The frame differential image value is evaluated against a predetermined threshold over a predetermined time period. Based on the evaluation, a signal is output indicating whether the objects on the conveyor belt are moving or jammed.
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公开(公告)号：US20230123458A1
公开(公告)日：2023-04-20
申请号：US17036255
申请日：2020-09-29
发明人： Ashley Wise , Chunmei Kang , Wade Oberpriller
IPC分类号： G01S13/34
摘要： Apparatus and associated methods relate to enabling a radar system to use different sensing mechanisms to estimate a distance from a target based on different detection zones (e.g., far-field and near-field). In an illustrative example, a curve fitting method may be applied for near-field sensing, and a Fourier transform may be used for far-field sensing. A predetermined set of rules may be applied to select when to use the near-field sensing mechanism and when to use the far-field mechanism. The frequency of a target signal within a beat signal that has less than two sinusoidal cycles may be estimated with improved accuracy. Accordingly, the distance of a target that is within a predetermined distance range (e.g., two meters range for 24 GHz ISM band limitation) may be reliably estimated.
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公开(公告)号：US11521328B2
公开(公告)日：2022-12-06
申请号：US17072028
申请日：2020-10-15
发明人： Wade Oberpriller , Paul D. Bratton , Jeff Bromen
摘要： Apparatus and associated methods relate to a method of non-contact motion detection. A one-dimensional optical sensor detects motion of a target or objects on a conveyor belt through a continuous measurement of targets or objects and a real-time comparison of the pixel images captured by the one-dimensional optical sensor. In an illustrative embodiment, a one-dimensional sensor may be configured to determine motion of objects based on changes to the captured intensities of pixel images over time. The sensor may continually capture photoelectric pixel images and compare a current pixel image with a previous pixel image to determine a frame differential image value. The frame differential image value is evaluated against a predetermined threshold over a predetermined time period. Based on the evaluation, a signal is output indicating whether the objects on the conveyor belt are moving or jammed.
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公开(公告)号：US20220291384A1
公开(公告)日：2022-09-15
申请号：US17303061
申请日：2021-05-19
发明人： Wade Oberpriller
摘要： Apparatus and associated methods relate to a field-adjustable distance sensor configured to translate a transfer function of the sensor by a substantially constant value in a position domain by calibration at one or more known distances. In an illustrative example, the transfer function may correlate multiple distances to corresponding position vectors describing a position of a light signal on a receiver. The receiver may, for example, generate a detection signal corresponding to a position on the receiver of a light signal reflected off a target. A control circuit may, for example, generate a position vector in response to the detection signal. A calibration constant (C) may be generated, for example, as a function of a known distance of the target and position vector. C may be applied, for example, to translate the transfer function in the position domain. Various embodiments may advantageously reduce non-linear error in a distance sensor.
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