公开(公告)号：US5103682A

公开(公告)日：1992-04-14

申请号：US608931

申请日：1990-11-05

Applicant: John M. Moreland ,  William P. Dube

Inventor： John M. Moreland ,  William P. Dube

IPC: G01G7/00 ,  G01L1/08 ,  G01L11/00

CPC classification number: G01L11/008 ,  G01G7/00 ,  G01L1/086 ,  Y10S505/842

Abstract: A highly sensitive force detector using a tunneling junction as a strain gauge is disclosed. The tunneling junction is connected to a deflection member which receives the force to be measured. The junction is connected in a nulling circuit to a magnetic flux motor which generates a restoring force precisely equal to the force to be measured. The magnetic flux required by the flux motor to do so is measured by a SQUID, the output of which is directly proportional to the flux to be measured. The device has applications in pressure sensing, weighing, gravity measurements, detection of massive objects, and elsewhere.

Abstract translation: 公开了一种使用隧道结作为应变计的高灵敏度力检测器。 隧道结连接到接收被测量力的偏转构件。 该结在零电路中连接到磁通电动机，该磁通电动机产生精确地等于被测量力的恢复力。 磁通电动机所需的磁通量通过SQUID测量，SQUID的输出与要测量的磁通成正比。 该设备在压力感应，称重，重力测量，大量物体的检测和其他地方都有应用。

公开(公告)号：US4341275A

公开(公告)日：1982-07-27

申请号：US249420

申请日：1981-03-31

Applicant: Eberhard Stadler ,  Franz-Josef Melcher

Inventor： Eberhard Stadler ,  Franz-Josef Melcher

IPC: G01G7/04 ,  G01L1/08 ,  G01G7/02

CPC classification number: G01G7/04 ,  G01L1/086

Abstract: An electromagnetically compensating measuring apparatus, as in force measuring or weighing devices, wherein a compensation coil is wound upon a coil form movable in the air gap of a stationary permanent magnet system having a pole plate, a capacitive position sensor is connected to detect the position of the compensation coil, and an automatic volume control amplifier is series-connected to the position sensor so as to follow it, with the output of the amplifier connected to feed the compensation coil to tend to hold it in a predetermined zero position, and wherein the coil form and the pole plate each form an electrode of the position sensor.

Abstract translation: 一种电磁补偿测量装置，如在力测量或称重装置中，其中补偿线圈缠绕在可在具有极板的固定永磁体系统的气隙中移动的线圈形式，电容位置传感器被连接以检测位置 并且自动音量控制放大器串联连接到位置传感器以便跟随其，放大器的输出被连接以馈送补偿线圈以倾向于将其保持在预定的零位置，并且其中 线圈形式和极板各自形成位置传感器的电极。

公开(公告)号：US4009607A

公开(公告)日：1977-03-01

申请号：US644218

申请日：1975-12-24

Applicant: William H. Ficken

Inventor： William H. Ficken

IPC: G01L1/08 ,  G01L1/14 ,  G01P15/08

CPC classification number: G01L1/086

Abstract: A force measuring system includes a signal source for energizing a capacitance bridge arrangement. The bridge arrangement includes a pair of fixed capacitors and a pair of variable capacitors formed by a displaceable force sensitive element normally disposed in a null position between two fixed plates. A force applied to the system displaces the force sensitive element from the null position toward one or the other of the fixed plates to unbalance the bridge whereupon a signal is provided which is applied to a servo amplifier. The servo amplifier provides a signal which is applied to the displaceable force sensitive element, and which element is restored to the null position due to the electrostatic reaction occurring upon appropriate energization of the fixed plates. The signal provided by the servo amplifier is an accurate measure of the sensed force.

Abstract translation: 力测量系统包括用于激励电容桥布置的信号源。 桥式装置包括一对固定电容器和一对可变电容器，该可变电容器通常位于两个固定板之间的零位置中的可移动的力敏元件形成。 施加到系统的力将力敏元件从零位置移向固定板中的一个或另一个，以使桥接不平衡，由此提供施加到伺服放大器的信号。 伺服放大器提供施加到可移动力敏感元件的信号，并且由于在固定板的适当通电时发生静电反应，哪个元件恢复到零位置。 由伺服放大器提供的信号是感测力的精确测量。

公开(公告)号：US3963082A

公开(公告)日：1976-06-15

申请号：US573560

申请日：1975-05-01

Applicant: Eugen Meier

Inventor： Eugen Meier

IPC: G01G1/24 ,  G01G3/16 ,  G01G21/24 ,  G01L1/08 ,  G01L1/10 ,  G01G3/14 ,  G01L5/12

CPC classification number: G01G3/165 ,  G01G1/246 ,  G01G21/244 ,  G01L1/086 ,  G01L1/106 ,  Y10S73/01

Abstract: Improved force measuring apparatus of the one- or two- string type, including means for applying to the movable member of the apparatus a corrective force that compensates for nonlinearities in the response of the apparatus over the full range of travel of the pan carrier member between the no-load and full-load positions, thereby to produce a linear variation in the resulting oscillation frequency with respect to load. In the one-string embodiment, linearization means are provided for applying to the oscillatory string means a corrective force that varies quadratically with the displacement of the movable member over its full range between the no-load and full-load positions. In the two-string embodiment, decoupling spring means are provided for independently connecting the two strings in opposite senses between the frame and pan carrier members. The aforementioned linearization means and/or temperature compensation means are also provided for improving the operation of the two-string embodiment.

Abstract translation: 一种或两种类型的改进的力测量装置，包括用于向装置的可移动部件施加补偿力的补偿力，该矫正力补偿装置在盘托架构件的整个行程范围内的响应中的非线性 无负载和满载位置，从而相对于负载产生的振荡频率的线性变化。 在一弦实施例中，提供了线性化装置，用于向振荡线装置施加随着可动构件在空载和满载位置之间的整个范围内的位移而二次变化的校正力。 在双线实施例中，提供了去耦弹簧装置，用于在框架和盘托架构件之间以相反的方向独立地连接两根绳。 还提供了上述线性化装置和/或温度补偿装置，用于改善双线实施例的操作。

公开(公告)号：US3293911A

公开(公告)日：1966-12-27

申请号：US37917664

申请日：1964-06-30

Applicant: CONTINENTAL ELEKTRO IND AG

Inventor： HORST ZIEGLER

IPC: G01L1/08 ,  G01L11/00 ,  G01R17/08

CPC classification number: G01L1/086 ,  G01L11/008 ,  G01R17/08

公开(公告)号：US3253460A

公开(公告)日：1966-05-31

申请号：US31019963

申请日：1963-09-20

Applicant: FOXBORO CO

Inventor： MCNABB GEORGE C

IPC: G01F1/00 ,  G01L1/08 ,  G01L11/00 ,  G01R17/08

CPC classification number: G01R17/08 ,  G01F1/00 ,  G01L1/086 ,  G01L11/008

公开(公告)号：US3087331A

公开(公告)日：1963-04-30

申请号：US85490659

申请日：1959-11-23

Applicant: FIELDEN ELECTRONICS LTD

Inventor： ERNEST FIELDEN JOHN

IPC: G01L1/08 ,  G01L1/14 ,  G01L11/00

CPC classification number: G01L1/086 ,  G01L1/142 ,  G01L11/008