公开(公告)号：US4208905A

公开(公告)日：1980-06-24

申请号：US944757

申请日：1978-09-22

Applicant: Martin Spoor

Inventor： Martin Spoor

IPC: G01B7/16 ,  G01D5/16 ,  G01L1/22

CPC classification number: G01L1/2243

Abstract: Precision strain-gage transducers of low-cost construction, which lend themselves well to expression in the form of protectively-enclosed miniature load beams, are developed from sensing elements fine-blanked from wholly flat thin metallic sheet stock, the shaping and dimensioning of critical strain-responsive portions being controlled by the fine-blanking of both inner and outer edges of the element. Versatile mounting and loading provisions are conveniently associated with the element by way of simple openings formed laterally of the strain-responsive portions, and protective enclosure of sensitive strain gages and the strain-responsive portions is achieved by the transverse build-up of the element with stamped sheet-stock flanges affixed and sealed to it at spaced positions and to ends of a surrounding tubular bellows.

Abstract translation: 低成本结构的精密应变计传感器以保护性封闭的微型负载梁的形式表现出来，是从完全平整的薄金属板材精细冲裁的感应元件开发出来的，关键的成形和尺寸 应变响应部分通过元件的内边缘和外边缘的精细冲裁来控制。 多种安装和装载方式通过简单的开口与应变响应部分横向形成，方便地与元件相关联，敏感应变计的保护外壳和应变响应部分通过元件的横向积聚来实现， 冲压的板料凸缘在间隔开的位置和周围的管状波纹管的端部处固定并密封。

公开(公告)号：US4217785A

公开(公告)日：1980-08-19

申请号：US1698

申请日：1979-01-08

Applicant: Martin Spoor

Inventor： Martin Spoor

IPC: G01B7/16 ,  G01L1/22 ,  G01B7/20

CPC classification number: G01L1/2281 ,  G01L1/2243

Abstract: A strain-gage transducer incorporating a plurality of electrical-resistance strain gages coupled together in a bridge network is caused to remain zero-balanced under varying-temperature conditions by way of dual-resistance foil-type unit interposed at one of the output corners of the bridge with its two like foil-resistance elements occupying adjacent arms. The foil material is selected to exhibit a resistance change with temperature representing a factor which enables a target room-temperature measurement to be calculated once a rate of change of bridge output with temperature has been determined from measurements taken while the unstrained transducer is held at different temperatures. Relatively broad surfaces of the foil elements are left exposed, and the unit of which they are a part is so disposed in relation to the transducer structure that the exposed foil is accessible for controlled erasure-type abrasion which will bring about the target measurement and attendant compensation.

Abstract translation: 在桥接网络中并入耦合在一起的多个电阻应变计的应变计换能器在变温条件下通过双电阻箔型单元在一个输出角落处保持零平衡 具有两个像箔片电阻元件的桥梁占据相邻的臂。 箔材料被选择为表现出电阻变化，其温度表示一个因素，其能够一旦计算出目标室温测量值，一旦通过温度测量的桥式输出的变化率是通过在不受约束的换能器保持不同时所进行的测量确定的 温度。 箔元件的相对宽的表面被暴露，并且它们作为一部分的单元相对于换能器结构被布置，使得暴露的箔可被接近以进行受控擦除型磨损，这将导致目标测量和伴随 补偿。

公开(公告)号：USD260880S

公开(公告)日：1981-09-22

申请号：US954908

申请日：1978-10-26

Applicant: Martin Spoor

Designer： Martin Spoor

公开(公告)号：US4267724A

公开(公告)日：1981-05-19

申请号：US1607

申请日：1979-01-08

Applicant: Martin Spoor

Inventor： Martin Spoor

IPC: G01B7/16 ,  G01L1/22 ,  G01L1/20

CPC classification number: G01L1/2281 ,  G01L1/2243 ,  G01L1/2262

Abstract: Each of two pairs of electrical-resistance strain gages which are to make up a measurement bridge for a beam-type load cell is fashioned as a composite wherein two spaced-apart grids of foil-type parallel elongated filaments oriented and functioning as strain gages are made of material promoting a strain gage factor effective to compensate for elastic modulus change of the beam material as temperature varies over an expected range. Intermediate the two grids of strain-gage filaments, where a neutral position between tension and compression surface strains of the sensing element of a gaged beam may be expected to appear, the common insulating backing for the two grids carries a set of narrow strands which produce a dummy foil resistance of predetermined value needed for a calibration wherein it simulates the influence upon bridge input impedance of a temperature-compensation resistance such as would otherwise be used without the inherent compensation for elastic modulus changes by way of offsetting effects of strain gage factor of the gages. The same material which forms the foil or printed-circuit type gage grids also forms the dummy or calibration resistor upon the same underlying backing, and, in addition creates relatively large-area and low-resistance integral interconnections between the gages and resistance and tabs for needed external-wiring connections.

Abstract translation: 构成用于束式称重传感器的测量桥的两对电阻应变计中的每一个被形成为复合材料，其中定向并用作应变计的箔型平行细长长丝的两个间隔开的格栅是 由促进应变计因子的材料制成，其有效地补偿随着温度在预期范围内变化的梁材料的弹性模量变化。 中间应变计长丝的两个网格，其中可以预期出现计量梁的感测元件的张力和压缩表面应变之间的中性位置，用于两个网格的公共绝缘背衬携带一组窄的线，其产生 校准所需的预定值的虚拟箔电阻，其中模拟对温度补偿电阻的桥式输入阻抗的影响，例如否则将通过补偿弹性模量变化的固有补偿而通过应变计因子的抵消效应 规格 形成箔片或印刷电路式格栅的相同材料也在相同的底层背衬上形成虚拟或校准电阻器，并且还在量规和电阻和接头之间形成相对大面积和低电阻的整体互连，用于 需要外部接线连接。