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公开(公告)号：US11486756B2
公开(公告)日：2022-11-01
申请号：US16322645
申请日：2017-08-01
申请人： Albert Schliesser
摘要： A mechanical resonator device. The resonator device includes a resonator element made of an elastic material under tensile stress and adapted for sustaining at least one oscillation mode; and a clamping structure supporting the resonator element. The clamping structure has a phononic density of states exhibiting a bandgap or quasi-bandgap such that elastic waves of at least one polarisation and/or frequency are not allowed to propagate through the clamping structure. The resonator element and the clamping structure are configured to match with a soft-clamping condition that elastic waves of polarisation and/or frequency corresponding to the at least one oscillation mode of the resonator penetrate evanescently into the clamping structure in a manner such as to minimize bending throughout the entire resonator device. Thereby, bending related loss may be minimized and the Q-factor of the mechanical resonator may be maximized.
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公开(公告)号：US20220226195A1
公开(公告)日：2022-07-21
申请号：US17609080
申请日：2020-05-12
发明人： Marco MINARDI
摘要： A mass measuring apparatus includes a transferring and gripping device for removing an article from a seat of a movement device, holding the article in a measuring position, and then reinserting the article into the seat. The transferring and gripping device includes a gripping element for holding the article, an actuator for operating with an actuating signal on the gripping element to make the gripping element vibrate at a specific resonance frequency, a sensor for measuring a vibration response signal of the gripping element vibrating and supporting the article in the measuring position, a processing unit for receiving the vibration response signal and controlling the actuator to generate an actuating signal to make the gripping element vibrate at an operating resonance frequency, and then calculating a mass of the article by comparing the operating resonance frequency with the resonance frequency of the gripping element.
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公开(公告)号：US11320298B2
公开(公告)日：2022-05-03
申请号：US16933674
申请日：2020-07-20
发明人： Vyacheslav D. Kats
摘要： Apparatus and related methods are provided in a surface acoustic wave (SAW) scale for measuring weight of a load. A processor reads a first frequency of a SAW delay line operating in a first mode. A push oscillator injects a frequency similar to but different than the first frequency in order to cause the SAW delay line to operate in a second mode, and the processor reads a second frequency of the SAW delay line operating in the second mode. A difference between the frequencies is calculated and compared to values in a stored table to determine the first mode at which the SAW delay line was operating. Based on a determination of the first mode and the first frequency, the weight of the load is determined. This determined weight can be used to recalibrate an auxiliary weight sensor.
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公开(公告)号：US10598540B2
公开(公告)日：2020-03-24
申请号：US15855928
申请日：2017-12-27
申请人： VELOX ROBOTICS, LLC
发明人： Bryan J. Turner
摘要： This disclosure pertains to weighing a physical item while it is moving in a servo-driven conveyor system for e-commerce, logistics, manufacturing and other applications. The introduction of an unknown mass to an electro-mechanical feedback or filter network controlling a conveyance system will modify the steady state behavior of that system in such a way that measuring the phase or frequency shift of an input signal or oscillation will enable us to infer the magnitude of that mass.
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公开(公告)号：US20190391003A1
公开(公告)日：2019-12-26
申请号：US16464203
申请日：2017-11-24
申请人： DIGI SENS Holding AG
摘要： The invention relates to a method for calculating the weight of a load moving on scales (1). According to the method, a load signal of the scales is determined over a period of time using the speed of the load, and several partial load signals (TL1, TL2) are used, the total thereof providing the load signal, a first partial load signal (TL1) displaying a maximum value as long as the load is fully on the weighing section of the scales (1), and a second partial load signal (TL2) displaying a minimum value as long as the load is completely removed from the weighing section of the scales (1), and the speed of the movement of the load is determined from said partial load signals (TL1 and TL2). The invention also relates to scales for carrying out said method, comprising two weighing units (10, 11) with flexible deformation elements on which deformation sensors (7, 15), which generate the partial load signals (TL1,TL2), are arranged.
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公开(公告)号：US10151620B2
公开(公告)日：2018-12-11
申请号：US15799887
申请日：2017-10-31
发明人： Cagri Abdullah Savran , Bin-Da Chan , Kutay Icoz
IPC分类号： G01G3/16
摘要： A device for weighing micro- and nano-sized particles. The device includes a base portion, an oscillator coupled to the base portion configured to vibrate the base portion, a first cantilevered beam coupled to the base portion at a proximal end and having a tip portion at a distal end, and a second cantilevered beam coupled to the base portion at a proximal end and having a tip portion at a distal end, each of the first and second cantilever beams further having a first plurality of fingers near the first tip portion inwardly pointing and a second plurality of fingers near the second tip portion inwardly pointing, respectively, such that the entirety of each cantilever beam is positioned in a side-by-side manner next to the entirety of the other forming substantially mirror images of one another, the first plurality of fingers interdigitating with the second plurality of fingers such that the first cantilevered beam and the second cantilevered beam can oscillate independent of each other, the interdigitating fingers separated by gaps that are configured to reflect light from the interdigitating fingers during oscillation of the first and second cantilevered beams to form a diffraction pattern.
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公开(公告)号：US10113893B2
公开(公告)日：2018-10-30
申请号：US15021324
申请日：2014-09-12
摘要： A method of determining the predicted usage of gas from a gas cylinder and valve assembly. The method comprises determining, using a sensor assembly and at a time t, the mass of gas in the gas cylinder, the average flow rate of gas from the gas cylinder; and the time remaining until the quantity of gas in the gas cylinder reaches a predetermined level, the time remaining being determined, at time t, from the mass of gas in the gas cylinder, the average flow rate of gas from the gas cylinder, and a predetermined scaling factor selected in dependence upon the proportion of gas remaining in the gas cylinder. The average flow rate is determined based on previous measurements, and the amount of gas remaining in the gas cylinder.
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公开(公告)号：US20180153484A1
公开(公告)日：2018-06-07
申请号：US15828693
申请日：2017-12-01
CPC分类号： A61B6/0457 , A61B6/032 , A61B6/0471 , G01G3/16 , G01G19/445 , G01G19/52
摘要： A method automatically determines a weight of a patient lying on a tabletop of a patient positioning device. A motorized movement of the tabletop along at least one predeterminable axis sets the tabletop in an oscillation via an elastic drive train element, and the patient's weight is determined from a determined oscillation frequency. Therefore, the weight of a patient lying on a patient positioning device can be determined in a simple manner.
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公开(公告)号：US20180141217A1
公开(公告)日：2018-05-24
申请号：US15805777
申请日：2017-11-07
发明人： Toshiyuki KAMIYA
CPC分类号： B25J13/085 , G01G3/13 , G01G3/165 , G01L1/165 , G01L1/167 , G01L5/226 , H01L41/047
摘要： A force detection sensor includes a base member having a first surface subjected to an external force and a second surface having a normal direction different from the first surface, and electrode fingers placed on the second surface, wherein an arrangement direction of the electrode fingers is different from the normal direction of the first surface in a plan view of the second surface. Further, the second surface includes a surface of a piezoelectric material. A constituent material of the piezoelectric material is quartz crystal. The first surface crosses an electrical axis of the quartz crystal.
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公开(公告)号：US20180120144A1
公开(公告)日：2018-05-03
申请号：US15855928
申请日：2017-12-27
申请人： VELOX ROBOTICS, LLC
发明人： Bryan J. Turner
CPC分类号： G01G11/003 , B65G15/00 , B65G39/00 , B65G2203/0258 , G01G3/16 , G01G19/005 , G01N29/12 , G01N2291/028 , H02P31/00
摘要： This disclosure pertains to weighing a physical item while it is moving in a servo-driven conveyor system for e-commerce, logistics, manufacturing and other applications. The introduction of an unknown mass to an electro-mechanical feedback or filter network controlling a conveyance system will modify the steady state behavior of that system in such a way that measuring the phase or frequency shift of an input signal or oscillation will enable us to infer the magnitude of that mass.
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