专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP1038161B1 PRESSURE TRANSDUCER HAVING A TENSIONED DIAPHRAGM 有权
标题翻译： WITH A拉伸的膜压力转换
公开(公告)号：EP1038161B1
公开(公告)日：2003-05-14
申请号：EP98958002.2
申请日：1998-11-16
申请人： Setra Systems, Inc.
发明人： LEE, Shih-Ying
IPC分类号： G01L9/12 , G01L7/08 , G01L9/00
CPC分类号： G01L13/00 , G01L9/0072 , Y10T29/43
摘要： A capacitive pressure transducer (110) includes a conductive diaphragm positioned between pneumatically separated chambers. The diaphragm is fixed and sealingly coupled at its periphery to the peripheral rim (116) of a concave body member. The diaphragm (140) is supported in tension by the peripheral rim (116) of a concave body member. An electrode assembly (150), supported by the body member (120, 130), establishes a substantially planar conductive surface opposite to and spaced apart by a nominal gap from the conductive diaphragm. The body member includes a yieldable portion that is adapted to radically expand its peripheral rim (116) in response to forces applied to the body member. When the forces are aplied, the body member becomes strained beyond its elastic limit and takes a permanent set whereby the peripheral rim (116) is expanded and the diaphragm becomes tensioned.

2. 发明授权

EP0830577B1 MAGNETIC RELATIVE POSITION TRANSDUCER WITH SLOTTED SHIELD 失效
标题翻译：与长眼筛磁位置转换器
公开(公告)号：EP0830577B1
公开(公告)日：2001-01-31
申请号：EP96916992.9
申请日：1996-06-03
申请人： Setra Systems, Inc.
发明人： BRIEFER, Dennis, K. , PINTO, Gino, A.
IPC分类号： G01L9/10 , G01L1/14 , G01B7/02 , G01D5/20
CPC分类号： G01L9/007 , G01D5/202 , G01L1/14
摘要： A differential pressure transducer includes a pair of interior chambers (12, 14) separated by supported, nominally planar electrically conductive diaphragm (16). A magnetic assembly is positioned on at least one chamber wall opposite an electrical conductor.

3. 发明授权

EP0500783B1 PRESSURE TRANSDUCER WITH FLOW-THROUGH MEASUREMENT CAPABILITY 失效
标题翻译：流量测量的可能性压力变压器
公开(公告)号：EP0500783B1
公开(公告)日：1996-10-16
申请号：EP91900581.9
申请日：1990-11-05
申请人： SETRA SYSTEMS, INC.
发明人： LEE, Shih-Ying
IPC分类号： G01L9/12
CPC分类号： G01L9/0004 , A61M2205/3331 , G01L9/0002 , G01L9/0005
摘要： A transducer measures the pressure of a fluid within a hollow conduit, typically one with a circular cross-section, having a central region that is deformed to a non-circular cross-section. This non-circular portion of the conduit displaces radially and repeatably without hysteresis in response to the pressure of the fluid in the conduit in a manner that corresponds to the pressure. A variable capacitor assembly (26), or a set of strain gauges (A, B, C, D) mounted on the exterior of the non-circular portion, produce an electrical signal proportional to the radial displacement or to the strain, respectively. In one capacitive form (26) a pair of electrodes (24) are mounted on opposite sides of the non-circular portion formed as free end portions of metallic sheet members with a central channel. In another capacitive form (26') electrodes (24') are mounted at one or both ends of lever arms which in turn are coupled to the non-circular portion with a set of flexure plates (34, 36) to produce a mechanical amplification of the radial displacement.

4. 发明公开

EP0500783A4 PRESSURE TRANSDUCER WITH FLOW-THROUGH MEASUREMENT CAPABILITY 失效
标题翻译：具有流量测量能力的压力传感器
公开(公告)号：EP0500783A4
公开(公告)日：1993-02-24
申请号：EP91900581
申请日：1990-11-05
申请人： SETRA SYSTEMS, INC.
发明人： LEE, SHIH-YING
IPC分类号： G01L9/04 , G01L9/00 , G01L9/12
CPC分类号： G01L9/0004 , A61M2205/3331 , G01L9/0002 , G01L9/0005

5. 发明公开

EP0969287A2 Charge balance network with floating ground capacitive sensing 审中-公开
标题翻译：电荷平衡网络与电容消费与浮地
公开(公告)号：EP0969287A2
公开(公告)日：2000-01-05
申请号：EP99303300.0
申请日：1999-04-28
申请人： Setra Systems, Inc.
发明人： Briefer, Dennis K.
IPC分类号： G01R27/26
CPC分类号： G01R27/2605
摘要： A capacitance measurement system (100) amenable to implementation on an integrated circuit includes a switching network (102), a voltage driving element (104), a sensor network (106), and a feedback network (108). The sensor network (106) includes a fixed capacitor connected in series to a variable sensing capacitor. The feedback network (108) receives the voltage generated at the junction node between the two capacitors, and the other side of the sensor capacitor is connected to system ground. The voltage driving element (104), responsive to a signal from the switching network (102), shifts the local voltage which supplies power to the feedback network (108). The feedback network (108) generates a feedback signal representative of the difference in the charge stored on the series capacitors from a predetermined value. The switching network (102) includes a control which is operative to cyclically interconnect the feedback signal and reference potentials with the sensor network (106) and the voltage driving element (104), whereby the average change in the charge stored on the capacitors over each cycle is substantially equal to the predetermined value. In this configuration, the feedback signal is a predetermined function of a capacitance of the sensing capacitor.
摘要翻译：电容测量系统（100）适合于执行关于集成电路包括开关网络（102），一个电压驱动元件（104），传感器网络（106），和一个反馈网络（108）。该传感器网络（106）包括串联连接到可变感测电容器的固定电容器。所述反馈网络（108）接收在两个电容器之间的结点产生的电压，并且传感器电容器的另一侧连接到系统地。电压驱动元件（104），响应于来自所述交换网（102）的信号，转移到哪个所述反馈网络（108）提供电力的局部电压。反馈网络（108）基因费率反馈代表在存储在从预定值的串联电容器的电荷的差的信号。该交换网络（102）包括控制所有这些操作以周期性地互连与所述传感器网络（106）和所述电压驱动元件（104），所述反馈信号和基准电位，由此在存储在电容器上每个电荷的平均变化基本上周期等于所述预定值。在这种结构中，所述反馈信号是感测电容器的电容的预定函数。

6. 发明公开

EP0741906A1 LOW COST, CENTER-MOUNTED CAPACITIVE PRESSURE SENSOR 失效
标题翻译： CHEAPER中央安装式电容式压力转换器
公开(公告)号：EP0741906A1
公开(公告)日：1996-11-13
申请号：EP95907484.0
申请日：1995-01-20
申请人： SETRA SYSTEMS, INC.
发明人： LEE, Shih-Ying
IPC分类号： G01L1 , G01L9 , H01G5
CPC分类号： G01L9/0072
摘要： A variable capacitance type pressure sensor (10) with excellent manufacturability center-mounts an electrode (20) on an edge-mounted diaphragm (16) using a metal-glass-metal subassembly (18). An inner metal post (28) of the assembly is welded to the diaphragm (16). A solder or flowable cement (36) secures the electrode (20) to an outer metal collar (32) of the assembly (18) with the initial diaphragm-to-electrode spacing (38) set by a temporary shim (40). The position of the glass (30) and the physical lengths of the metallic members (28, 32) of the assembly are adjusted to provide self-compensation for temperature variations.

7. 发明授权

EP0438413B1 HUMIDITY CONTROL SYSTEM FOR A SCALE 失效
标题翻译：用于规模的湿度控制系统
公开(公告)号：EP0438413B1
公开(公告)日：1993-03-03
申请号：EP89907566.7
申请日：1989-06-12
申请人： SETRA SYSTEMS, INC.
发明人： LI, Da, Ke
IPC分类号： G01G7/06 , G01G23/00
CPC分类号： G01G23/00 , G01G7/06
摘要： The relative humidity of air present within a housing of a scale (10), utilizing a capacitive transducer (16) mounted at the interior of the housing, is controlled by a combination of (i) a mechanical partial seal (34) of the housing which resists a flow of moisture through the seal, and (ii) a supply (42) of a desiccant located within the housing which both absorbs and desorbs moisture from the air. The partial seal (34) is located at an opening (18) in the housing for a shaft (20) mounting a weighing pan (22) external to the housing. The desiccant (42) is silica gel. The values for the flow resistance and desiccant supply produce a very slow change over time, typically several years. The relative humidity within the housing varies within +5 % of a steady state value despite much larger variations in the temperature and humidity of the air surrounding the housing.

8. 发明公开

EP0431067A4 TEMPERATURE STABLE OSCILLATOR 失效
标题翻译：温度稳定的振荡器
公开(公告)号：EP0431067A4
公开(公告)日：1992-01-15
申请号：EP89910359
申请日：1989-08-17
申请人： SETRA SYSTEMS, INC.
发明人： BRIEFER, DENNIS, K.
IPC分类号： H03B5/04 , H03B5/12 , H03L1/02
CPC分类号： H03L1/02 , H03B5/04 , H03B5/1203 , H03B5/1231 , H03B2200/0034 , H03B2200/0048 , H03B2200/0056
摘要： An oscillator (10) including a first frequency control network (12) having a series coupled inductance (L1) and sensor capacitor (CS1), a pair of cascaded capacitors (C1 and C2), and an emitter follower amplifier (18) coupled thereto. The emitter follower amplifier (18) drives a current limiter (20) and a feedback path (22), whereby the current through the emitter follower amplifier (18) is divided between the current limiter (20) and the feedback path (22) in a manner establishing an oscillatory potential in the oscillator (10), while keeping the transistor (Q1) of the emitter follower amplifier (18) substantially out of its saturation state.

9. 发明公开

EP0080493A1 LINEAR MOTION LINKAGE 失效
标题翻译： BOOM FOR直线运动。
公开(公告)号：EP0080493A1
公开(公告)日：1983-06-08
申请号：EP82901899.0
申请日：1982-05-11
申请人： SETRA SYSTEMS INC.
发明人： LEE, Shih-Ying
IPC分类号： G01G21
CPC分类号： G01G21/244 , Y10T74/18992
摘要： Assemblage de liaison (160, 300) contraignant un organe de reference (162, 302) a se deplacer le long d'un axe de reference (164, 306) avec un degre sensible de mouvement le long de cet axe tout en presentant une bonne resistance aux forces et aux moments lateraux ainsi qu'aux mouvements decales par rapport a l'axe. Dans une forme de realisation, l'assemblage de liaison comprend deux paires d'elements de flexion (168, 170 et 172, 174), chaque element de flexion ayant une partie extreme de sommet et au moins une partie extreme distale. Les elements de flexion de chaque paire sont connectes de telle sorte que leurs paires correspondantes des parties extremes distales soient couplees entre elles. Chacune des parties extremes distales couplees est connectee par un organe de liaison rigide (176, 178) sur la paire correspondante des parties extremes distales connectees de l'autre paire d'elements de flexion de sorte que la jonction des parties extremes distales de chaque paire couplee soit separee d'une distance predeterminee dans le sens de l'axe de reference. Les parties de sommet des elements de flexion correspondants de chaque paire sont connectees a l'organe de reference (162). Les deux parties de sommet couplees a l'organe de reference (162) sont separees de la distance predeterminee dans le sens de l'axe de reference (164). Les parties de sommet des autres elements de flexion sont connectees a l'organe de support en des points separes de la distance predeterminee dans le sens de l'axe de reference (164).

10. 发明公开

EP1218712A1 CAPACITIVE PRESSURE SENSOR HAVING ENCAPSULATED RESONATING COMPONENTS 审中-公开
标题翻译：电容压力传感器封装响应分量
公开(公告)号：EP1218712A1
公开(公告)日：2002-07-03
申请号：EP00950987.8
申请日：2000-08-04
申请人： Setra Systems, Inc.
发明人： BRIEFER, Dennis, K. , PINTO, Gino, A.
IPC分类号： G01L7/08
CPC分类号： G01L9/0072
摘要： A capacitive pressure sensor (100) includes a capacitive plate (116) disposed adjacent to the elastic member (102) so as to define a gap (126) between a planar conductive surface of the elastic member and a corresponding planar surface of the capacitive plate (116). The gap (126), capacitive plate (116) and elastic member (102) together define a capacitor having a characteristic capacitance. The sensor (100) further includes an elongated electrical conductor (120) characterized by an associated inductance value. The gap (126) between the capacitive plate (116) and the elastic member (102) varies as a predetermined function of the pressure applied to the elastic member (102) so as to vary the capacitance. The capacitor (130) and the electrical conductor (120) together form an electrical resonator having a characteristic resonant frequency. Thus, the resonant frequency of the tank circuit is indicative of the pressure applied to the elastic member.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式