公开(公告)号：US3786884A

公开(公告)日：1974-01-22

申请号：US3786884D

申请日：1972-04-14

Applicant: METTLER INSTRUMENTE AG

Inventor： ALLENSPACH H

IPC: G01G7/04 ,  G01G23/00 ,  G01G3/15 ,  G01G23/42

CPC classification number: G01G7/045 ,  G01G23/00

Abstract: Force-measuring apparatus of the type including electromagnetic compensation means having a movable member that is returned to a no-load position relative to a stationary member by the supply of compensating current pulses of constant amplitude and variable length to a compensation coil secured to said movable member, characterized by the provision of counter means for counting subtotal numbers of counting pulses during periods corresponding with the lengths of said compensating current pulses, respectively, and means including counter control means for periodically transferring to store means the total value of the successive subtotals in the counter means and for simultaneously resetting the counter means to zero. Coarse control means are provided for causing the totalized subtotal pulse count to correspond with a decimal multiple or fraction of a weight unit, and additional store means are provided for optionally indicating for each of a series of subtotal measuring operations the net arithmetic difference between the totalized value and a given pulse reference value (such as tare). According to an alternate embodiment, means including subtotal rate selection switch means are provided for establishing low and high frequency subtotal rates, respectively, and stage selection switch means are operable in conjunction with the operation of said rate switch selection switch means for supplying the counting pulses to corresponding low and high stages, respectively, of the counter.

Abstract translation: 这种类型的力测量装置包括电磁补偿装置，该电磁补偿装置具有通过向恒定振幅和可变长度的补偿电流脉冲提供固定到所述可移动的补偿线圈而相对于静止构件返回到空载位置的可移动构件 其特征在于提供了用于在与所述补偿电流脉冲的长度相对应的周期期间分别计数小计数量的计数装置的计数装置，以及包括用于周期性地向存储装置传送连续小计的总值的装置的装置 计数器装置并用于同时将计数器装置复位为零。 提供粗调控制装置，用于使总计小计脉冲计数与重量单位的十进制倍数或分数相对应，并且提供附加存储装置，用于可选地指示一系列小计测量操作中的每一个， 值和给定的脉冲参考值（如皮重）。 根据替代实施例，提供了包括小计速率选择开关装置的装置，用于分别建立低频和高频小计速率，并且级选择开关装置可与所述速率开关选择开关装置的操作一起工作，用于提供计数脉冲 分别到柜台的相应的低阶段和高阶段。

公开(公告)号：US3788410A

公开(公告)日：1974-01-29

申请号：US3788410D

申请日：1972-08-02

Applicant: METTLER INSTRUMENTE AG

Inventor： ALLENSPACH H ,  MEIER E

IPC: G01G3/16 ,  G01L1/10 ,  G01G23/22

CPC classification number: G01G3/16 ,  G01L1/10

Abstract: Force measuring apparatus of the type including a mechanical oscillator, such as a string, that vibrates under load to produce a signal voltage the frequency of which is a function of the force to be measured. The invention is characterized in that following multiplication of the signal frequency, the signal is fed to multi-stage counter means for selected long or short periods of time corresponding with the desired sensitivity of measurement. The duration of the period of connection is controlled by a gate timing switch which is operable simultaneously with a stage selection switch associated with the counter, whereby when the connection periods are alternately long and short, the signal to be counted is fed to lower and upper counter stages, respectively. The gate tuning switch is operable alternately by a reference signal supplied from a mechanical oscillator, such as a crystal, or a reference string contained in the same housing as the measuring string.

Abstract translation: 这种类型的力测量装置包括诸如弦杆的机械振荡器，其在负载下振动以产生其频率是要测量的力的函数的信号电压。 本发明的特征在于，在信号频率乘以之后，将信号馈送到多级计数器装置，以对应于期望的测量灵敏度选择的长时间或短时间段。 连接周期的持续时间由门计时开关控制，该门定时开关可与与计数器相关联的级选择开关同时操作，由此当连接周期交替长而短时，要计数的信号被馈送到下和上 计数器阶段。 栅极调谐开关可以由诸如晶体的机械振荡器或包含在与测量串相同的壳体中的参考串提供的参考信号交替操作。

公开(公告)号：US3789937A

公开(公告)日：1974-02-05

申请号：US3789937D

申请日：1973-06-25

Applicant: METTLER INSTRUMENTE AG

Inventor： STROBEL F ,  ALLENSPACH H

IPC: G01G23/36 ,  G01D3/00 ,  G01D7/00 ,  G01G3/16 ,  G01G7/04 ,  G01G23/37 ,  G01G23/46 ,  G01G3/14

CPC classification number: G01G23/37 ,  G01G3/16 ,  G01G7/04 ,  G01G23/46 ,  Y10S177/03

Abstract: An improved electrical balance is disclosed of the type including stationary and load-responsive movable components, means being provided for supplying to signal evaluating means an analog load signal having a function that varies with load, said evaluation means being periodically operable during successive measuring periods to produce digitalized measurements that correspond with the load. The invention is characterized by the provision of balance monitoring means that disable the evaluation means in the event that movement of the movable balance component exceeds predetermined limits during the measurement period. The monitoring means further effects the transfer of each digitalized measurement result to associated data storage means only when the movement of the movable component has not exceeded the predetermined limits during the corresponding measurement period. In balances including load compensation means, the load signal may be the compensation current that is supplied to the compensation coil means.

Abstract translation: 公开了包括静态和负载响应的可移动部件的类型的改进的电气平衡，提供用于向信号评估装置提供具有随负载变化的功能的模拟负载信号的装置，所述评估装置在连续的测量周期期间可周期性地操作， 产生与负载相对应的数字化测量。 本发明的特征在于提供了一种平衡监测装置，其在测量期间超过预定极限的可移动平衡组件的移动时禁止评估装置。 只有当可移动部件的运动在相应的测量周期内没有超过预定的限制时，监视装置进一步影响每个数字化的测量结果传送到相关联的数据存储装置。 在包括负载补偿装置的平衡中，负载信号可以是提供给补偿线圈装置的补偿电流。