-
公开(公告)号：US11755166B2
公开(公告)日：2023-09-12
申请号：US16640124
申请日：2018-08-29
申请人： TouchNetix Limited
IPC分类号： G06F3/044 , G01L1/14 , H03K17/975
CPC分类号： G06F3/0447 , G01L1/142 , G06F3/0445 , H03K17/975 , G06F2203/04105 , H03K2217/9651
摘要： A sensing apparatus comprising: a displacement sensor comprising capacitance measurement circuitry configured to provide a displacement sensor output signal indicative of a separation between a frame element and a displacement element movably mounted with respect to the frame element; a touch sensor comprising measurement circuitry configured to provide a touch sensor output signal indicative of when an object is determined to be touching the displacement element; and a processing element configured to output a displacement detection signal to indicate there is determined to be a displacement of the displacement element relative to the frame element in response to determining the touch sensor output signal indicates an object is touching the displacement element and a difference between the displacement sensor output signal and a baseline displacement sensor output signal exceeds a threshold value, wherein the baseline displacement sensor output signal is determined from the displacement sensor output signal in a time period determined from when the touch sensor output signal initially indicates the object is touching the displacement element.
-
32.发明公开公开(公告)号：US20230273077A1
公开(公告)日：2023-08-31
申请号：US17681320
申请日：2022-02-25
IPC分类号： G01L1/14
CPC分类号： G01L1/142
摘要： One or more computing devices, systems, and/or methods are provided. In an example, a method includes tuning a sensor comprising a first resonator having an effective gain, a second resonator having an effective loss, and a coupling circuit connected between the first resonator and the second resonator at an extrema degeneracy point with a nonlinear response to a force applied to the sensor. At least one of the first resonator, the second resonator, or the coupling circuit comprises a variable capacitor having a capacitance that varies as a function of the force. The method comprises injecting an input signal into one of the first resonator or the second resonator, receiving an output signal from one of the first resonator or the second resonator, and determining a magnitude of a force based on a difference between a first frequency extrema point and a second frequency extrema point in the output signal.
-
33.发明授权公开(公告)号：US11736106B2
公开(公告)日：2023-08-22
申请号：US16914846
申请日：2020-06-29
发明人： Marc Lux , Matthias Seifert
IPC分类号： H03K17/975 , G01D5/24 , G01L1/14
CPC分类号： H03K17/975 , G01D5/24 , G01L1/142
摘要： A capacitive multipath force sensor module includes a movable actuator, first and second stationary capacitor plates, and a central capacitor plate connected to the actuator and positioned between the stationary plates. The central plate moves by a same amount toward one stationary plate and away from the other stationary plate when the actuator is moved. In multiple successive cycles, while the first stationary plate is held at ground, (i) the central plate and the second stationary plate are connected to a voltage and (ii) are then disconnected from the voltage with the central plate being connected to a capacitor having a known capacitance value to thereby enable a charge quantity stored on the central plate to be transferred to the capacitor. After a predefined number of cycles, a voltage of the capacitor, which is indicative of an amount of movement of the actuator, is measured.
-
公开(公告)号：US20230258510A1
公开(公告)日：2023-08-17
申请号：US18043748
申请日：2021-09-03
申请人： Liquid Wire, LLC
摘要： A flexible inductive pressure sensor, system, and method include an inductor configured to deform in multiple dimensions while maintaining inductive properties. A conductor is spaced apart from the inductor by a spacer positioned between the inductor and the conductor. The inductor has an inductance that varies based on an instantaneous distance between the inductor and the conductor. A capacitor is electrically coupled to the inductor and having a capacitance, wherein the inductor and the capacitor form a resonant circuit based on the inductance of the inductor and the capacitance of the capacitor. The resonant circuit is configured to, upon an input electrical signal applied to the flexible inductive pressure sensor, vary a voltage amplitude of an output signal based on the force applied to one or both of the inductor and the conductor and a resultant change in the impedance of the inductor.
-
公开(公告)号：US11719671B2
公开(公告)日：2023-08-08
申请号：US17504758
申请日：2021-10-19
发明人： Sina Akhbari , Zhongxuan Tu , Michael Chen , Hao-Yen Tang
CPC分类号： G01N29/2437 , G01L1/142 , G01L1/16 , G01N29/44 , G01N2291/102
摘要： A method of distinguishing between a first-type touch event and a second-type touch event is disclosed. A force-measuring and touch-sensing system includes piezoelectric force-measuring elements (PFEs) and piezoelectric ultrasonic transducers (PUTs), wherein each PUT can be configured as a transmitter (PUT transmitter) and/or a receiver (PUT receiver). The force-measuring and touch-sensing system is configured at a sense region. Each PUT transmitter transmits ultrasound signals towards the sense region and voltage signals are generated at the PUT receivers in response to ultrasound signals arriving from the sense region. Voltage signals are generated at PFEs in response to a low-frequency mechanical deformation of the respective piezoelectric capacitors. An event is determined to be a first-type touch event or a second-type touch event depending on a PUT data decrease and a magnitude of PFE data.
-
公开(公告)号：US20230243711A1
公开(公告)日：2023-08-03
申请号：US18132331
申请日：2023-04-07
发明人： Siegmar SCHMIDT , William A. DAI , Boon Khai NG
CPC分类号： G01L9/0075 , G01L19/0618 , G01L9/0048 , G01L9/0047 , G01L19/04 , G01L19/14 , G01L9/0016 , G01L19/147 , G01L1/142 , G01L9/0042 , G01L9/0072 , G01L9/0073 , G01L9/12 , G01L7/082 , G01L9/0044
摘要： Pressure sensors having ring-tensioned membranes are disclosed. A tensioning ring is bonded to a membrane in a manner that results in the tensioning ring applying a tensile force to the membrane, flattening the membrane and reducing or eliminating defects that may have occurred during production. The membrane is bonded to the sensor housing at a point outside the tensioning ring, preventing the process of bonding the membrane to the housing from introducing defects into the tensioned portion of the membrane. A dielectric may be introduced into the gap between the membrane and the counter electrode in a capacitive pressure sensor, resulting in an improved dynamic range.
-
公开(公告)号：US11692886B2
公开(公告)日：2023-07-04
申请号：US17498854
申请日：2021-10-12
发明人： Yong Luo
CPC分类号： G01L1/142 , G01L1/2262 , G06F3/0202 , H03K5/24 , H03K21/02
摘要： The present invention provides a pressure detection circuit including an oscillator unit, configured to output an oscillation signal as a count clock signal of a counter unit; and the counter unit, connected to the oscillator unit and configured to acquire a frequency of the oscillation signal and count. The pressure detection circuit further includes a comparator unit, connected to the counter unit, and configured to detect a voltage variation obtained by a pressure conversion, and send a signal to control the counter unit to count or stop counting; a voltage converter unit, connected to one input terminal of the comparator unit, and configured to supply a fixed or variable comparable voltage to the comparator unit; a constant current source charging unit, connected to the other input terminal of the comparator unit, and configured to supply a linearly and gradually increased comparison voltage to the comparator unit; a charge/discharge control unit, connected to the constant current source charging unit, and configured to control the constant current source charging unit to charge or discharge, such that the comparable voltage output by the voltage converter unit is compared to cause an output terminal of the comparator unit to enable counting of the counter unit; wherein the oscillator unit or the voltage converter unit further includes a pressure acquiring unit, as a component of the voltage converter unit or the oscillator unit, configured to convert a pressure into a variation of the comparable voltage or the frequency of the oscillation signal. The invention also provides a pressure input device pressure detection device. The invention has the technical effects of high sensitivity and resolution, power saving, and wide applicability.
-
公开(公告)号：US11690531B2
公开(公告)日：2023-07-04
申请号：US17061163
申请日：2020-10-01
申请人： Bend Labs, Inc.
CPC分类号： A61B5/1071 , G01B7/003 , G01B7/30 , G01D5/24 , G01D5/2412 , G01L1/146 , A61B5/6807 , A61B2562/0247 , A63B2220/50
摘要： Disclosed embodiments include a multi-mode sensor including an elastomeric strand having a first multi-mode sensing region configured to sense at least two different physical parameters, and a second multi-mode sensing region, space apart from the first multi-mode sensing region, and configured to sense at least two different physical parameters. In some disclosed embodiments the first multi-mode sensing region is configured to measure the physical parameters of angular displacement and strain.
-
公开(公告)号：US20230200250A1
公开(公告)日：2023-06-22
申请号：US17928453
申请日：2021-05-29
CPC分类号： H10N30/802 , G01D5/24 , G01L1/144 , H10N30/20 , H10N30/1071
摘要： Transducer systems disclosed herein include self-sensing capabilities. In particular, electrostatic transducers include a low voltage electrode and a high voltage electrode. A low voltage sensing unit is coupled with the low voltage electrode of the electrostatic transducer. The low voltage sensing unit is configured to measure a capacitance of the electrostatic transducer, from which displacement of the electrostatic transducer may be calculated. High voltage drive signals received by the high voltage electrode during actuation may be isolated from the low voltage sensing unit. The isolation may be provided by dielectric material of the electrostatic transducer, a voltage suppression component, and/or a voltage suppression module comprising a low impedance ground path. In the event of an electrical failure of the transducer, the low voltage sensing unit may be isolated from high voltages.
-
公开(公告)号：US20230168759A1
公开(公告)日：2023-06-01
申请号：US18161948
申请日：2023-01-31
发明人： WON KI HONG , SUNG KOOK PARK , SO HEE PARK , HEE SEOMOON , YOUNG SEOK SEO , TAE HEE LEE
CPC分类号： G06F3/0414 , G01L1/26 , G01L1/142 , G06F3/044 , G01L1/20
摘要： A force sensor includes first and second substrates. The second substrate faces the first substrate. A driving electrode is disposed on a first surface of the first substrate facing the second substrate. A sensing electrode is disposed on the first surface of the first substrate and is spaced apart from the driving electrode. A force sensitive layer is disposed on a first surface of the second substrate, facing the first substrate. The driving electrode includes a main driving protrusion that protrudes from a side surface of the driving electrode, facing the sensing electrode.
-
-
-
-
-
-
-
-
-
搜索结果
1761 条记录 (耗时 0.026 秒)
