公开(公告)号：US4691290A

公开(公告)日：1987-09-01

申请号：US638272

申请日：1984-08-06

申请人： Neil C. Griffen

发明人： Neil C. Griffen

IPC分类号： G01G3/14 ,  G01G23/01 ,  G01G23/16 ,  G01G23/37 ,  G01L1/00 ,  G01G23/14 ,  G01G19/413

CPC分类号： G01G23/01 ,  G01G23/16 ,  G01G23/3714 ,  G01G3/1414

摘要： A digital scale compensated for creep by first obtaining and storing a mathematical representation of creep as a function of time for the particular scale. The current "creep state" of the scale is continually calculated, stored and used to correct the current weight indication for creep. The current creep state is obtained by calculating the increment of creep since the previous determination of creep state and combining it with the stored previous creep state.

摘要翻译： 通过首先获得并存储蠕变的数学表示作为特定刻度的时间的函数，数字刻度补偿了蠕变。 秤的当前“蠕变状态”被持续计算，存储并用于纠正当前的爬行重量指示。 通过计算自先前确定蠕变状态并将其与存储的先前蠕变状态组合的蠕变增量计算得到当前蠕变状态。

公开(公告)号：US4525794A

公开(公告)日：1985-06-25

申请号：US399647

申请日：1982-07-16

申请人： Daniel G. Scheffer ,  Christopher W. Brock ,  Douglas B. Schumer

发明人： Daniel G. Scheffer ,  Christopher W. Brock ,  Douglas B. Schumer

IPC分类号： G01G23/37 ,  G06F15/20 ,  G01G13/14

CPC分类号： G01G23/3714

摘要： An electronic balance having a strain gauge transducer. The analog output signal of the transducer is processed digitally so that the displayed weight is based on several successive digitized analog signal samples. Various operating parameters (e.g., conversion factors for several different units of weight) are stored in a non-volatile memory so that the scale can perform various weighing functions. The scale has a parts counter mode of operation requiring re-taring of the parts container whenever the scale is recalibrated for a different individual part weight.

摘要翻译： 具有应变仪传感器的电子天平。 传感器的模拟输出信号以数字方式进行处理，使得显示的重量基于几个连续的数字化模拟信号采样。 各种操作参数（例如，用于几个不同重量单位的转换因子）被存储在非易失性存储器中，使得秤可以执行各种称重功能。 当刻度对于不同的单个零件重量进行重新校准时，刻度尺具有零件计数器操作模式，需要对零件容器重新组装。

公开(公告)号：US5179379A

公开(公告)日：1993-01-12

申请号：US779679

申请日：1991-10-21

申请人： Donald Allen ,  Dominic Hill

发明人： Donald Allen ,  Dominic Hill

IPC分类号： G01B7/00 ,  G01G23/37 ,  G01L1/22 ,  G06F3/038 ,  H03F3/34 ,  H03M1/06 ,  H03M1/10 ,  H03M1/12

CPC分类号： G06F3/0383 ,  G01G23/3714 ,  G01L1/2256 ,  H03M1/0607 ,  H03M1/12

摘要： An analog to digital convertor (20) comprises an amplifier (100) for amplifying an analog input signal to generate an amplified output signal. A conversion means (110) periodically samples the amplified output signal to generate a digital word as a function of each sample. A compensation means, preferably including a microcontroller logic circuit (130), compensates for drift in the output signal steady state level of the amplified output signal. The compensation means includes a tracking means (130) for summing a digital offset value and the digital word in response to, and to compensate for, the drift in the output signal level between upper and lower limits. The compensation means also includes a bias means (130,140) for changing a bias signal level at the input of the amplifier (100) in response to, and to compensate for, the drift extending beyond the limits. The compensation means further includes a logic means (130,190) for modifying the digital word in response to, and to compensate for, the step change.

摘要翻译： 模数转换器（20）包括放大器（100），用于放大模拟输入信号以产生放大的输出信号。 A转换装置（110）周期性地对放大的输出信号进行采样以产生作为每个采样的函数的数字字。 优选地包括微控制器逻辑电路（130）的补偿装置补偿放大的输出信号的输出信号稳态电平中的漂移。 补偿装置包括跟踪装置（130），用于响应于并且补偿上限和下限之间的输出信号电平的漂移来对数字偏移值和数字字求和。 补偿装置还包括偏置装置（130,140），用于响应并补偿超出极限的漂移，改变放大器（100）的输入处的偏置信号电平。 补偿装置还包括用于响应于并且补偿阶跃变化来修改数字字的逻辑装置（130,190）。

公开(公告)号：US4804052A

公开(公告)日：1989-02-14

申请号：US126271

申请日：1987-11-30

申请人： Neil C. Griffen

发明人： Neil C. Griffen

IPC分类号： G01G23/01 ,  G01G3/14 ,  G01G19/02 ,  G01G23/37 ,  G01G19/40 ,  G01G19/52 ,  G01L25/00

CPC分类号： G01G23/3714 ,  G01G19/021

摘要： Multiple digital load cells forming one or more weighing scales are connected together and to a common master controller in a local area network. The digital load cells are polled by and provide weight readings to the master controller. The weight readings are combined with a load position correction factor for each load cell and summed to provide a weight indication corrected for load position. The values of the load position correction factors are determined during set up of the scale and stored at the master controller. An individual load cell can be diagnosed remotely and replaced if defective. A new load position correction factor is determined and stored for a replacement load cell.

公开(公告)号：US4782904A

公开(公告)日：1988-11-08

申请号：US929093

申请日：1986-11-07

申请人： Christopher W. Brock

发明人： Christopher W. Brock

IPC分类号： G01G23/37 ,  G01G19/40 ,  G01G23/10

CPC分类号： G01G23/3714

摘要： A microcomputerized electronic balance has a digital filter which filters the output of a weight transducer in the balance. The filter changes the amount of filtering in response to the resolution of a display in the balance, the desires of the user of the balance as reflected by the state of a manual data entry means manipulated by the user, and the stability of the balance. Use of such filter results in a stable display of weight related data and good response time for the display.

摘要翻译： 微电脑电子天平具有数字滤波器，其对天平中的重量传感器的输出进行滤波。 滤波器响应于天平中的显示器的分辨率来改变滤波量，由用户操纵的手动数据输入装置的状态反映的天平的用户的期望以及天平的稳定性。 使用这样的过滤器可以稳定显示重量相关的数据和良好的响应时间。

公开(公告)号：US4363370A

公开(公告)日：1982-12-14

申请号：US247525

申请日：1981-04-07

申请人： Warren Sarkison

发明人： Warren Sarkison

IPC分类号： G01G3/12 ,  G01G3/147 ,  G01G23/37 ,  G01R17/06 ,  G01G3/14

CPC分类号： G01G23/3714 ,  G01G3/12 ,  G01G3/147 ,  G01R17/06 ,  Y10S177/03

摘要： Electronic scale apparatus includes a face transducer having a first analog output; digital to analog converter circuitry having a second output; a first differential amplifier to receive such outputs and to produce a third output; and a second differential amplifier to receive the third output and output of the converter circuitry to produce another output. A major portion of the weight of the object being weighed is determined at the output of the first differential amplifier (i.e. a coarse measurement). The remaining portion or difference is then amplified and balanced out at the second differential amplifier, enabling accurate determination of weight and driving of the digital to analog converter in feed-back mode.

摘要翻译： 电子秤装置包括具有第一模拟输出的面部换能器; 具有第二输出的数模转换器电路; 第一差分放大器，用于接收这样的输出并产生第三输出; 以及第二差分放大器，用于接收转换器电路的第三输出和输出以产生另一输出。 在第一差分放大器的输出（即，粗略测量）处确定被称重对象的重量的主要部分。 剩余部分或差值然后在第二差分放大器被放大和平衡，使得能够在反馈模式下精确地确定重量和驱动数模转换器。

公开(公告)号：US5210706A

公开(公告)日：1993-05-11

申请号：US932911

申请日：1992-08-20

申请人： Yoshihisa Nishiyama

发明人： Yoshihisa Nishiyama

IPC分类号： G01G3/147 ,  G01G23/37

CPC分类号： G01G23/3714 ,  G01G3/147

摘要： A load cell weighing device has a plurality of load cells. In the device, detection values are respectively output from the load cells. The detection values are digitized by analog-to-digital conversion circuits. Low frequency noise components involved in the digitized detection values are reduced by digital filters. Then, the noise-reduced values are summed to provide weight data.

摘要翻译： 称重传感器称重装置具有多个称重传感器。 在设备中，检测值分别从称重传感器输出。 检测值由模拟 - 数字转换电路数字化。 数字滤波器减少数字化检测值中涉及的低频噪声成分。 然后，将噪声减小的值相加以提供权重数据。

公开(公告)号：US5172783A

公开(公告)日：1992-12-22

申请号：US724304

申请日：1991-07-01

申请人： Seymour Feinland ,  Gerald C. Freeman

发明人： Seymour Feinland ,  Gerald C. Freeman

IPC分类号： G01G23/365 ,  G01G23/37

CPC分类号： G01G23/10 ,  G01G19/005 ,  G01G23/365 ,  G01G23/3714

摘要： An electronic scale for weighing an article includes a weighing channel for providing an output indicative of the instantaneous weight of the article and a reference channel for providing an output indicative of instantaneous vibrations affecting the output of the weighing channel. The scale also has a mechanism for providing a signal indicative of a long term average of the reference channel's output. Another mechanism of the scale compares the average signal with the reference channel's output and provides a validation signal when the reference channel's output does not differ by more than a threshold amount from the average signal.

摘要翻译： 用于称重物品的电子秤包括称重通道，用于提供指示物品的瞬时重量的输出和用于提供指示影响称重通道的输出的瞬时振动的输出的参考通道。 该比例还具有用于提供指示参考信道的输出的长期平均值的信号的机制。 标尺的另一种机制是将平均信号与参考通道的输出进行比较，并且当参考通道的输出与平均信号没有相差超过阈值时提供有效信号。

公开(公告)号：US5166892A

公开(公告)日：1992-11-24

申请号：US842746

申请日：1992-02-27

申请人： Shin-ichi Inoue ,  Akio Hirose

发明人： Shin-ichi Inoue ,  Akio Hirose

IPC分类号： G01D3/02 ,  G01D3/032 ,  G01G23/37

CPC分类号： G01D3/032 ,  G01D3/02 ,  G01G23/3714

摘要： A device used in an apparatus, such as weigher, pressure gauge or the like, for essentially measuring a force, which utilizes a flexural member of elastic material for detecting the force by converting its deflection or strain caused by application of the force into an electric signal, and adapted to compensate for measurement error caused by a time-dependent change in the detection output as a result of creep and/or stress reluxation of the flexural member by removing error components by an electric circuit constructed in accordance with a principle of digital filter.

摘要翻译： 在用于基本上测量力的设备中使用的用于基本上测量力的装置，其利用弹性材料的弯曲构件来通过将其通过施加力引起的偏转或应变转换成电力来检测力 信号，并且适于补偿由于通过根据数字原理构造的电路去除误差分量而导致的挠曲构件的蠕变和/或应力再通的结果，检测输出中的时间依赖性变化引起的测量误差 过滤。

公开(公告)号：US4796212A

公开(公告)日：1989-01-03

申请号：US799122

申请日：1985-11-18

申请人： Tohru Kitagawa

发明人： Tohru Kitagawa

IPC分类号： G01G3/18 ,  G01G23/37 ,  G01G23/48 ,  G01K19/00 ,  G06F15/20

CPC分类号： G01G23/48 ,  G01G23/3714

摘要： A load cell type, weight-measuring device includes a load cell for generating an electrical signal corresponding to an applied weight, an analog-to-digital converting circuit for converting an output signal from the load cell to a digital data, and a data processing unit for generating weight data on the basis of output data from the A/D converting circuit. This weight-measuring device further has a memory in which data indicative of the temperature characteristic of the output signal of the load cell is stored, and a temperature sensor for detecting the temperature of the load cell and generating a corresponding output signal. The data processing unit corrects the output data from the A/D converting circuit on the basis of the output signal from the temperature sensor and the data in the memory.

摘要翻译： 称重传感器类型的重量测量装置包括用于产生对应于施加的重量的电信号的测力传感器，用于将来自测力传感器的输出信号转换为数字数据的模数转换电路，以及数据处理 基于来自A / D转换电路的输出数据产生权重数据的单元。 该重量测量装置还具有存储表示测力传感器的输出信号的温度特性的数据的存储器，以及用于检测测力传感器的温度并产生对应的输出信号的温度传感器。 数据处理单元基于来自温度传感器的输出信号和存储器中的数据来校正来自A / D转换电路的输出数据。