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Patent Agency Ranking
公开(公告)号：US20220283109A1
公开(公告)日：2022-09-08
申请号：US17750615
申请日：2022-05-23
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Bjoern Oliver EVERSMANN , Andreas Felix Martin Kraemer , Michael Seidl
Abstract: A capacitance sensing system senses frost and ice accumulation in an energy efficient defrost system. The capacitance sensing system comprises a first capacitor including a portion of a metal heat exchanger and a sensor electrode electrically isolated from the metal heat exchanger; a tank oscillator including a second capacitor and an inductor coupled in parallel with each other and with the first capacitor; and a circuit coupled to the tank oscillator. The circuit determines a resonant frequency of the tank oscillator, determines a capacitance value of the first capacitor based on the resonant frequency of the tank oscillator, and transmits a heater activation command in response to determining the capacitance value is greater than a threshold.
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公开(公告)号：US11371954B2
公开(公告)日：2022-06-28
申请号：US15936059
申请日：2018-03-26
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Bjoern Oliver Eversmann , Andreas Felix Martin Kraemer , Michael Seidl
Abstract: A capacitance sensing system for sensing frost and ice accumulation. The capacitance sensing system comprises a first capacitor formed by a portion of a metal heat exchanger and a sensor electrode electrically isolated from the metal heat exchanger, a tank oscillator comprising a second capacitor and an inductor connected in parallel with each other and coupled in parallel with the first capacitor, and a circuit coupled to the tank oscillator. The circuit coupled to the tank oscillator is configured to determine a resonant frequency of the tank oscillator, determine a capacitance value based on the resonant frequency of the tank oscillator, determine that the capacitance value is greater than a predefined threshold, and transmit a heater activation command in response to determining the capacitance value is greater than the predefined threshold.
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公开(公告)号：US10578353B2
公开(公告)日：2020-03-03
申请号：US15809692
申请日：2017-11-10
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Michael Seidl , Bjoern Oliver Eversmann
Abstract: An apparatus includes a temperature sensor, a pressure sensor, a communication interface, and a hardware controller. The hardware controller may detect a door open and close event for a refrigeration unit and receives temperature readings from the temperature sensor and pressure readings from the pressure sensor. The hardware controller determines whether a performance level of the seal has fallen below a threshold level based on the temperature and pressure readings and transmits a signal through the communication interface responsive to a determination that the performance level of the seal has fallen below the threshold level.
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4.发明申请公开(公告)号：US20190331397A1
公开(公告)日：2019-10-31
申请号：US16129956
申请日：2018-09-13
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Yichang Wang , Michael Seidl
Abstract: A system includes a conductive element. The system also includes a resonant circuit having a sensing capacitor arranged such that an amount of target material in a sensing zone of the sensing capacitor changes a capacitance of the sensing capacitor, wherein the conductive element is electrically isolated from at least part of the resonant circuit. The system also includes a resonant circuit analyzer configured to detect a resonant frequency of the resonant circuit and to output a digitized analyzer signal based on the resonant frequency. The system also includes a processor configured to receive the digitized analyzer signal, to determine a target material estimate based on the digitized analyzer signal, and to output the target material estimate or a signal derived from the target material estimate to an output device.
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5.发明授权公开(公告)号：US11231221B2
公开(公告)日：2022-01-25
申请号：US16129956
申请日：2018-09-13
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Yichang Wang , Michael Seidl
Abstract: A system includes a conductive element. The system also includes a resonant circuit having a sensing capacitor arranged such that an amount of target material in a sensing zone of the sensing capacitor changes a capacitance of the sensing capacitor, wherein the conductive element is electrically isolated from at least part of the resonant circuit. The system also includes a resonant circuit analyzer configured to detect a resonant frequency of the resonant circuit and to output a digitized analyzer signal based on the resonant frequency. The system also includes a processor configured to receive the digitized analyzer signal, to determine a target material estimate based on the digitized analyzer signal, and to output the target material estimate or a signal derived from the target material estimate to an output device.
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