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公开(公告)号：US20240263992A1
公开(公告)日：2024-08-08
申请号：US18567557
申请日：2022-07-29
申请人： Mettler-Toledo (Changzhou) Precision Instruments Ltd. , Mettler-Toledo (Changzhou) Measurement Technology Ltd. , Mettler-Toledo International Trading (Shanghai) Co., Ltd.
发明人： Dandan Huang , Chunhui Li , Hu Ding , Lei Xu , Yujun Xu , Xudong Yuan , Yanbo Liu , Yifan Fan , Chenggang Ding
CPC分类号： G01G23/012 , G01G7/02
摘要： An integrated high-precision weighing module is provided which includes a scale pan, a lever, an internal calibration system, a bottom plate assembly, and a sensor main body. The scale pan is mounted on the lever, and the lever is connected to the sensor main body. The internal calibration system, the sensor main body and the lever are arranged transversely, and the internal calibration system and the sensor main body are respectively attached to the bottom plate assembly.
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公开(公告)号：US12055431B2
公开(公告)日：2024-08-06
申请号：US17631000
申请日：2020-07-29
申请人： Mettler-Toledo (Changzhou) Measurement Technology Ltd. , Mettler-Toledo (Changzhou) Precision Instruments Ltd. , Mettler-Toledo International Trading (Shanghai) Co., Ltd.
发明人： Song Zhang , Shenhui Wang , Shenjian Qian , Qin Sun
CPC分类号： G01G23/01 , G01G23/3714
摘要： A hysteresis compensation method, in which a hysteresis error is calculated for an obtained weighing value by means of an ideal hysteresis error model, and an ideal compensation value is further calculated by means of an ideal hysteresis compensation model, wherein by using a proportional relationship between a system hysteresis error model established in hysteresis calibration and the ideal hysteresis error model, the ideal compensation value is corrected to a final compensation value. The method establishes a mapping relationship between the system's own hysteresis compensation and the ideal state hysteresis compensation, and realizes the transformation of a complicated hysteresis error compensation situation into an ideal hysteresis error compensation situation. The method not only has a good compensation effect for the hysteresis error compensation under ideal situations, but also can obtain an excellent hysteresis compensation effect under complicated hysteresis situations.
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公开(公告)号：US12031855B2
公开(公告)日：2024-07-09
申请号：US17296650
申请日：2019-12-04
申请人： Kistler Holding AG
发明人： Biruk Hailesilassie
CPC分类号： G01G23/01 , G01G19/022 , G01L17/00 , G01L19/0092 , G01P15/00 , G01S19/01
摘要： A method to calibrate a Weigh in Motion (WIM) sensor that is arranged in a road flush with a road surface for determining a force exerted on the road surface by a vehicle's wheel transgressing the WIM sensor uses an evaluation unit that calculates the wheel force upon receiving the vehicle's velocity and a distance signal from a first device fixed on the vehicle and coordinates the wheel force with a synchronized signal from the WIM sensor to generate a calibrate function for the WIM sensor. The evaluation unit continuously adjusts the wheel force to take into account one or more of wheel pressure, wheel temperature, wheel tilt and vehicle acceleration. A system employing the method includes the vehicle, the evaluation unit, the first device, a synchronization device such as a GPS unit, and sensors for one or more of pressure, temperature, tilt and acceleration.
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公开(公告)号：US12007270B2
公开(公告)日：2024-06-11
申请号：US17448759
申请日：2021-09-24
申请人： Mettler-Toledo (Changzhou) Precision Instruments Co., Ltd , Mettler-Toledo (Changzhou) Measurement Technology Co., Ltd , Mettler-Toledo International Trading (Shanghai) Co., Ltd
发明人： JianWei Wu , Jianqiang Yang , Liugang Bi
摘要： A method and apparatus are provided for detecting the status of a load cell. When method for detecting the status of a load cell is applied to a multi-point weighing system, the method first collects characteristic sensing data of load cells. It then calculates an anomaly in the characteristic sensing data. From this, it acquires and generates an output signal corresponding to the load cell information when the anomaly exists. The method and apparatus for detecting the status of a load cell can help customers accurately locate a faulty, or potentially faulty, sensor, so as to avoid a measurement error due to sensor problems and improve user satisfaction.
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公开(公告)号：US12000726B2
公开(公告)日：2024-06-04
申请号：US17190591
申请日：2019-09-06
发明人： Urs Helfenstein , Stefan Ludescher
CPC分类号： G01G13/248 , G01F1/88 , G01G11/08 , G01G13/28 , G01G23/01 , G05D7/0605
摘要： The method according to the invention provides a way to continue gravimetric weighing of bulk material during refilling of a gravimetric metered dispensing unit, and to determine the mass of the refilled bulk material using a refilling container during the filling operation material and so determine the actual mass flow discharged during refilling in real time or on average in order to adjust it to a target mass flow.
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6.发明授权公开(公告)号：US11959934B2
公开(公告)日：2024-04-16
申请号：US16982695
申请日：2019-01-28
申请人： Mettler Toledo Precision Instrument Company Limited , Mettler Toledo Measurement Technology Company Limited , Mettler-Toledo International Trading (Shanghai) Co., Ltd.
发明人： Lei Xu , Jean-Christophe Emery
CPC分类号： G01N5/045 , G01G23/012
摘要： A high precision weighing system and weighing method has a weighing plate and weighing unit separation mechanism and a weight loading mechanism. The weighing plate and weighing unit separation mechanism controls separation of a weighing plate and a weighing unit, so that the weighing plate or the weighing plate and its carried material do not apply force to the weighing unit. The weight loading mechanism loads a weight onto the weighing unit or removes a weight from the weighing unit; the weighing system records a weighing value of the weighing unit during the action of the weighing plate and weighing unit separation mechanism and a sensitivity value during the action of the weight loading mechanism. The weighing system modifies the weighing value at the time of the most recent combination of the weighing plate and the weighing unit based on the recorded weighing and sensitivity values, achieving a high precision.
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公开(公告)号：US20240118125A1
公开(公告)日：2024-04-11
申请号：US18273320
申请日：2022-01-18
申请人： A&D COMPANY, LIMITED
发明人： Hideki OTSUKA , Tsutomu KOWA
摘要： Provided is a weighing apparatus that enables occurrence of an abnormality to be noticed. A weighing apparatus includes a rectangular weighing base, weighing sensors disposed at four corners of the weighing base, a control unit configured to calculate a weighed value of a to-be-weighed object on the weighing base based on outputs of the weighing sensors, and an abnormality detection means configured to detect occurrence of an abnormality based on output values of the weighing sensors, and detects occurrence of an abnormality by comparing a sum of output values of a pair of weighing sensors disposed on one side of the weighing base among the weighing sensors with a sum of past output values of the pair of weighing sensors.
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公开(公告)号：US20240102849A1
公开(公告)日：2024-03-28
申请号：US18283522
申请日：2022-04-15
申请人： Mettler-Toledo (Changzhou) Precision Instruments Ltd. , Mettler-Toledo (Changzhou) Measurement Technology Ltd. , Mettler-Toledo International Trading (Shanghai) Co., Ltd.
发明人： Ying Zhang , Hongzhi Lin , Jianwei Wu , Miao Xu
摘要： The present invention provides a digital load cell with redundancy design, the digital load cell including: at least one force measuring element that measures a load force applied to the digital load cell, where each force measuring element converts the load force into one analog signal; and one or more analog-to-digital conversion modules, where each force measuring element is connected to at least one analog-to-digital conversion module, and the analog-to-digital conversion module converts the analog signal into a digital signal. According to the digital load cell of the present invention, redundancy design is provided at least for both the force measuring element and the analog-to-digital conversion module, which can effectively ensure the proper operation of the digital load cell.
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公开(公告)号：US20240094048A1
公开(公告)日：2024-03-21
申请号：US18269520
申请日：2021-12-07
申请人： A&D COMPANY, LIMITED
发明人： Kazuna OKABE , Hisanori ODA
CPC分类号： G01G23/01 , G01G21/22 , G01G21/286 , G01G23/18
摘要： In order to achieve the object described above, an electronic balance includes a weighing pan, a windshield, door opening and closing mechanisms configured to automatically open and close doors of the windshield, a weight sensor, a built-in weight, a weight applying and removing mechanism for the built-in weight, and a control unit, the control unit measures a standard deviation of the built-in weight as an actual use standard deviation (SDreal) accompanied by a series of opening and closing operations consisting of opening the door by the door opening and closing mechanism, loading the built-in weight by the weight applying and removing mechanism, closing the door by the door opening and closing mechanism, acquiring weighing data of the built-in weight, opening the door by the door opening and closing mechanism, unloading the built-in weight by the weight applying and removing mechanism, and closing the door by the door opening and closing mechanism.
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公开(公告)号：US11781899B2
公开(公告)日：2023-10-10
申请号：US16814523
申请日：2020-03-10
申请人： Mettler-Toledo GmbH
发明人： Daniel Reber , Christoph Lang
CPC分类号： G01G17/04 , B01L3/021 , G01G23/01 , B01L2200/148
摘要： A verification of a pipette results in a release or a warning message. A liquid measuring container (110) receives the pipette liquid volume (VP) to be verified. A loading cell (120) is connected to the liquid measuring container in a force-transmitting manner. The loading cell outputs a measurement signal (ms) corresponding to the weight force (FG) acting thereon. A processing unit (130) detects and processes the measurement signal (ms), determines a first weight force (Gt1) at time point (t1) and determines a second weight force (Gt2) at time point (t2). The pipette liquid volume is calculated and the calculated value is assigned to a pipette volume class (Ki) having a defined class nominal value (VKi). The processing unit tests whether or not an absolute value of the volume difference (ΔV) is within a predetermined tolerance value (T) for the assigned pipette volume class. The processing unit outputs the test result.
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