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公开(公告)号：US20210381917A1
公开(公告)日：2021-12-09
申请号：US17303282
申请日：2021-05-26
申请人： Hajime NAKAMURA
发明人： Hajime NAKAMURA
摘要： A sensor drive circuit for driving a sensor with a current includes a first current source configured to generate a first current having a temperature characteristic of which a first order coefficient is positive and of which a second order coefficient is negative. The sensor drive circuit includes a second current source configured to generate a second current having a temperature characteristic of which a first order coefficient is negative and of which a second order coefficient is negative. The sensor drive circuit includes a current amplifier configured to amplify a third current, the third current being set by adding the first current and the second current. The sensor drive circuit includes a constant current source configured to generate a temperature-corrected constant current, such that a drive current for the sensor is set by adding the constant current to the amplified third current.
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公开(公告)号：US10684148B2
公开(公告)日：2020-06-16
申请号：US16031197
申请日：2018-07-10
申请人： EPRO GMBH
发明人： G. Peter Tasche , Michael Schlereth , Ulf Overkamp
摘要： A method for calibrating an eddy current sensor for temperature. Both frequency and one of voltage and current of an oscillator driving the eddy current sensor are measured at a plurality of temperatures and a plurality of target surface distances. Temperature equations are regressed to fit the measured frequency and one of the voltage and the current for each temperature, where the temperature equations have a common number of equivalent factors, and factor equations are regressed for each of the equivalent factors. A gain adjustment and an offset adjustment pair for each of the plurality of temperatures is determined for an oscillator associated with the eddy current sensor, that compensates an output of the eddy current sensor to a standard temperature. A gain equation is regressed to fit the determined gain adjustments, and an offset equation is regressed to fit the determined offset adjustments. The temperature equations, factor equations, gain equation, and offset equation are provided with the eddy current sensor.
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公开(公告)号：US10571296B2
公开(公告)日：2020-02-25
申请号：US15290355
申请日：2016-10-11
摘要： A circuit for obtaining information on a physical quantity according to an embodiment includes a sensor arrangement sensitive to the physical quantity, at least one further sensor element sensitive to the physical quantity and a supply circuit configured to provide the sensor arrangement with a supply signal comprising a supply voltage controlled by the supply circuit in a closed-loop configuration. The supply circuit is further configured to provide the at least one further sensor element with a further supply signal comprising a further supply current such that a magnitude of the further supply current fulfills a predetermined relationship with a magnitude of a supply current of the supply signal. As a consequence, it may be possible to improve a trade-off between an improved compensation of variations, simplifying an implementation, simplifying the manufacturing, simplifying the sensing and providing stable sensing conditions.
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公开(公告)号：US10466069B1
公开(公告)日：2019-11-05
申请号：US16231459
申请日：2018-12-22
申请人： Charles Kirksey , Al Garcia
发明人： Charles Kirksey , Al Garcia
摘要： A system and method for determining the wind force along the planned trajectory of a projectile are disclosed herein. A drone is flown along the expected path of the trajectory along a set heading. The drone is programmed to maintain the heading. As wind forces act upon the drone during its flight, the drone's electronic stability system provides automatic power and directional control to one or more motors that control the rotors and propellers that keep the drone aloft. By monitoring the changes in motor or drone state information over time in response to wind forces, the wind can be determined at various locations along the flight path. This information can be provided to a ballistics calculator to determine the launch heading of the projectile.
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公开(公告)号：US10393625B2
公开(公告)日：2019-08-27
申请号：US14250121
申请日：2014-04-10
申请人： Robert Bosch GmbH
摘要： A method for generating an allowed input data trajectory for a physical system to be tested or measured, including providing an input data trajectory in an input data space; determining an allowed operating range; and replacing at least one segment of the provided input data trajectory, which is outside of the allowed operating range, by a trajectory segment within the allowed operating range, in order to obtain the allowed input data trajectory.
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公开(公告)号：US20190212035A1
公开(公告)日：2019-07-11
申请号：US16243276
申请日：2019-01-09
发明人： Ray Oliver Knoeppel
CPC分类号： F24H9/2021 , F24H1/202 , F24H9/02 , F24H9/1818 , G01D3/028 , G01D3/08 , G05B15/02
摘要： A water heating system including a tank, a first heating element, a second heating element, a first temperature sensor, a second temperature sensor, a controller having an electronic processor and a memory. The controller is configured to determine an output temperature setpoint, determine whether a period of expected high water demand is approaching, and in response to determining that the period of expected high water demand is approaching, activate the second heating element. The controller is further configured to deactivate the second heating element when a second temperature sensed by the second temperature sensor crosses a second temperature threshold, activate the first heating element when the second temperature crosses the second temperature threshold, and deactivate the first heating element. Wherein the first temperature threshold is lower than the second temperature threshold and the first and second temperature thresholds are higher than the output temperature setpoint.
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公开(公告)号：US10317242B2
公开(公告)日：2019-06-11
申请号：US15514191
申请日：2015-09-08
申请人： DENSO CORPORATION
发明人： Makoto Sakai , Tsuyoshi Uezono
摘要： A sensor device includes: a detection device that detects a predetermined physical quantity and converts the physical quantity into a detection signal; a communication device that is to be connected to a controller through a first line and a second line, performs at least one of reception from the controller or transmission to the controller by a differential transmission method and, based on a request signal received from the controller, transmits the detection signal generated by the detection device; and a conductive shield member that is applied with a constant potential and covers the detection device and the communication device. The conductive shield member reduces radiation noise generation and simplifies the sensor device structure.
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公开(公告)号：US10274385B2
公开(公告)日：2019-04-30
申请号：US15845383
申请日：2017-12-18
申请人： SOKEN, INC. , DENSO CORPORATION
摘要： A torque detecting apparatus includes a first shaft; a second shaft; an elastic member coaxially linking the first and second shafts; and a magnet attached to the first shaft; a pair of magnetic yokes composed of a first magnetic yoke and a second magnetic yoke, the first and second magnetic yokes being fixedly installed on the second shaft; and a magnetic sensor. Each magnetic yoke includes an opposing portion and a wall portion. The opposing portion is opposed to the magnet and displaced circumferentially relatively to the magnet when the elastic member is subjected to a torsional displacement. The wall portions of the first and second magnetic yokes are separated and positioned outside the opposing portions in the radial direction. The wall portions of the first and second magnetic yokes extend to be mutually opposed. The magnetic sensor is positioned between the wall portions.
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公开(公告)号：US20190107597A1
公开(公告)日：2019-04-11
申请号：US16213534
申请日：2018-12-07
CPC分类号： G01R35/005 , G01D3/028 , G01D5/24 , G01R27/02 , G01R27/2605 , G01R35/00 , H02J7/045 , H02J7/345
摘要： A method of interfacing a LC sensor with a control unit is provided. The control unit may include first and second contacts, where the LC sensor is connected between the first and the second contact. A capacitor is connected between the first contact and a ground. To start the oscillation of the LC sensor, the method may include during a first phase, connecting the first contact to a supply voltage and placing the second contact in a high impedance state such that the capacitor is charged through the supply voltage. During a second phase, the first contact may be placed in a high impedance state, and the second contact connected to the ground such that the capacitor transfers charge towards the LC sensor. During a third phase, the first contact and the second contact may be placed in a high impedance state so the LC sensor is able to oscillate.
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公开(公告)号：US20180023494A1
公开(公告)日：2018-01-25
申请号：US15637464
申请日：2017-06-29
发明人： Masatoshi WATANABE , Shigeto UMEYAMA , Motoki KOMIYA , Keisuke KIDO , Chiharu MORISAKI , Hiroto MIURA
CPC分类号： F02D41/1456 , F01N11/007 , F02D41/1402 , F02D41/1454 , F02D41/1495 , F02D2041/2093 , G01D3/028 , G01D3/08 , G01R31/02
摘要： A controller of an air-fuel-ratio sensor includes a control unit, a voltage-abnormality detecting unit, and a short-circuit-abnormality detecting unit. The control unit controls a current and a voltage of a gas sensor element through a plurality of terminals connected with the gas sensor element. The voltage-abnormality detecting unit changes, when at least one of voltages of the plurality of terminals is out of a predetermined range, a voltage level of an output voltage. The short-circuit-abnormality detecting unit causes, when the voltage level of the output voltage changes from a first voltage into a second voltage, a control unit to perform for a predetermined time a protective operation that suppresses currents from the control unit to the plurality of terminals, and detects, when the voltage level of the output voltage is the second voltage after the protective operation is released, a short-circuit abnormality.
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