公开(公告)号：EP1245433B1

公开(公告)日：2018-10-17

申请号：EP02075919.7

申请日：2002-03-08

Applicant: Delphi Technologies, Inc.

Inventor： Gray, Charles A. ,  Rennaker, Royce L. ,  Kaltenbacher II, Phillip E. ,  Scales, Chance L. ,  Gallagher, James G. ,  Cobb, Gregory A.

IPC: B60N2/00 ,  B60R21/01 ,  G01G5/04 ,  G01G19/414

CPC classification number: B60N2/002

Abstract: An improved occupant weight detection system (10) measures the pressure in a fluid-filled bladder (20) disposed in or under a foam seat cushion as an indication of occupant weight, and periodically adjusts the pressure vs. occupant weight relationship to compensate for changes due to aging and usage of the foam seat cushion (142, 102, 104). The system controller (50) develops an aging adjustment value based on a measure of the cumulative aging and usage of the seat (130, 132, 134, 136, 138), and uses the developed adjustment value to compensate the operation of the system (142, 102, 104). The aging adjustment value is determined primarily as a function of occupant weight and time of seat occupancy, and the compensation is achieved by using the aging adjustment value to adjust either the estimated weight, or a threshold to which the measured pressure is compared for purposes of deciding if restraint deployment should be enabled (142).

公开(公告)号：EP1688717B1

公开(公告)日：2008-10-22

申请号：EP06075227.6

申请日：2006-02-02

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： Sanftleben, Henry M. ,  Fultz, William W. ,  Berg, Eric M. ,  Murphy, Morgan D. ,  Griffin, Dennis P. ,  Fortune, Duane D. ,  Creer, Michael D. ,  Cobb, Gregory A. ,  Hansen, Mark C. ,  Koors, Mark A.

IPC: G01G7/06

CPC classification number: G01G19/4142 ,  G01G7/06

公开(公告)号：EP1653206A3

公开(公告)日：2006-07-26

申请号：EP05077275.5

申请日：2005-10-06

Applicant: Delphi Technologies, Inc.

Inventor： Cobb, Gregory A. ,  Fortune, Duane D. ,  Fultz, William W. ,  Griffin, Dennis P.

IPC: G01L1/14

CPC classification number: G01L1/144 ,  B60N2/002

Abstract: The capacitance of a shielded capacitive load cell (12, 32) is determined so as to minimize the effect of stray or parasitic capacitance between the load cell (12) and other objects including the shield (32). The load cell conductors are coupled across input and output terminals of an operational amplifier (46) that is tied to a reference voltage. A constant current is applied to the load cell (12), and the resulting rate of change in voltage at the amplifier output is measured as a representation of the load cell capacitance. In a vehicle seat sensor application including an electromagnetic interference shield (32) between the load cell (12) and the seating surface (18), the amplifier output is coupled to the load cell electrode furthest from the shield (32), the amplifier (46) maintains the other load cell electrode at a virtual reference voltage, and the shield (32) is tied to the reference voltage.

公开(公告)号：EP1653206A2

公开(公告)日：2006-05-03

申请号：EP05077275.5

申请日：2005-10-06

Applicant: Delphi Technologies, Inc.

Inventor： Cobb, Gregory A. ,  Fortune, Duane D. ,  Fultz, William W. ,  Griffin, Dennis P.

IPC: G01L1/14

CPC classification number: G01L1/144 ,  B60N2/002

Abstract: The capacitance of a shielded capacitive load cell (12, 32) is determined so as to minimize the effect of stray or parasitic capacitance between the load cell (12) and other objects including the shield (32). The load cell conductors are coupled across input and output terminals of an operational amplifier (46) that is tied to a reference voltage. A constant current is applied to the load cell (12), and the resulting rate of change in voltage at the amplifier output is measured as a representation of the load cell capacitance. In a vehicle seat sensor application including an electromagnetic interference shield (32) between the load cell (12) and the seating surface (18), the amplifier output is coupled to the load cell electrode furthest from the shield (32), the amplifier (46) maintains the other load cell electrode at a virtual reference voltage, and the shield (32) is tied to the reference voltage.

Abstract translation: 屏蔽电容性负载单元（12，32）的电容是确定性的开采，以便最小化的负载传感器（12）和其它的目的，包括屏蔽件（32）之间的杂散或寄生电容的效果。 称重传感器导体跨越一个运算放大器（46）的输入和输出端都被联系在一个基准电压耦接。 恒定电流被施加到测力传感器（12），并且在所述放大器输出电压的变化所得到的速率被测量为负载单元电容的表示。 在车辆座椅传感器应用包括对测力传感器（12）和所述底座表面（18）之间的电磁干扰屏蔽罩（32），放大器的输出被从屏蔽件（32），放大器（耦合到负载电池电极最远 46）保持在一个虚拟的参考电压的其他负载电池用电极，并且所述屏蔽（32）绑定到所述基准电压。

公开(公告)号：EP1688717A1

公开(公告)日：2006-08-09

申请号：EP06075227.6

申请日：2006-02-02

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： Sanftleben, Henry M. ,  Fultz, William W. ,  Berg, Eric M. ,  Murphy, Morgan D. ,  Griffin, Dennis P. ,  Fortune, Duane D. ,  Creer, Michael D. ,  Cobb, Gregory A. ,  Hansen, Mark C. ,  Koors, Mark A.

IPC: G01G7/06

CPC classification number: G01G19/4142 ,  G01G7/06

Abstract: A capacitive load cell apparatus (12) includes upper and lower capacitor plates (30, 28) and an intermediate dielectric (22) in the form of a synthetic knit spacer material having upper and lower fabric layers (22a, 22b) interconnected by an array of deflectable synthetic fibers (22c). When occupant weight is applied to the seat (10), the synthetic fibers (22c) deflect to locally reduce the separation between the upper and lower capacitor plates (30, 28), and the consequent change in capacitance is detected as a measure of the applied weight (14). The load cell (12) or just the dielectric (22) may be encased in a polymeric sheath (40, 42) to prevent intrusion of foreign matter, and a fluid such as silicone may be dispersed in woven dielectric (22).

Abstract translation: 电容载荷传感器装置（12）包括上部和下部电容器板（30，28），并且在具有上部和下部织物层的合成针织间隔材料的形式的中间电介质（22）（22A，22B）由阵列互连， 的偏转的合成纤维（22C）。 当乘员重量施加至所述座椅（10），合成纤维（22℃）偏转到局部地减小上部和下部电容器板之间的间隔（30，28），并且在电容随之变化被检测为的量度 施加重物（14）。 负载传感器（12）或仅仅是电介质（22）可以在聚合物护套（40，42），以防止异物侵入被装入，和流体：如硅树脂可以在编织电介质（22）进行分散。

公开(公告)号：EP1245433A3

公开(公告)日：2004-01-14

申请号：EP02075919.7

申请日：2002-03-08

Applicant: Delphi Technologies, Inc.

Inventor： Gray, Charles A. ,  Rennaker, Royce L. ,  Kaltenbacher II, Phillip E. ,  Scales, Chance L. ,  Gallagher, James G. ,  Cobb, Gregory A.

IPC: B60N2/00 ,  B60R21/01 ,  G01G5/04 ,  G01G19/414

CPC classification number: B60N2/002

Abstract: An improved occupant weight detection system (10) measures the pressure in a fluid-filled bladder (20) disposed in or under a foam seat cushion as an indication of occupant weight, and periodically adjusts the pressure vs. occupant weight relationship to compensate for changes due to aging and usage of the foam seat cushion (142, 102, 104). The system controller (50) develops an aging adjustment value based on a measure of the cumulative aging and usage of the seat (130, 132, 134, 136, 138), and uses the developed adjustment value to compensate the operation of the system (142, 102, 104). The aging adjustment value is determined primarily as a function of occupant weight and time of seat occupancy, and the compensation is achieved by using the aging adjustment value to adjust either the estimated weight, or a threshold to which the measured pressure is compared for purposes of deciding if restraint deployment should be enabled (142).

公开(公告)号：EP1245433A2

公开(公告)日：2002-10-02

申请号：EP02075919.7

申请日：2002-03-08

Applicant: Delphi Technologies, Inc.

Inventor： Gray, Charles A. ,  Rennaker, Royce L. ,  Kaltenbacher II, Phillip E. ,  Scales, Chance L. ,  Gallagher, James G. ,  Cobb, Gregory A.

IPC: B60N2/00

CPC classification number: B60N2/002

Abstract: An improved occupant weight detection system (10) measures the pressure in a fluid-filled bladder (20) disposed in or under a foam seat cushion as an indication of occupant weight, and periodically adjusts the pressure vs. occupant weight relationship to compensate for changes due to aging and usage of the foam seat cushion (142, 102, 104). The system controller (50) develops an aging adjustment value based on a measure of the cumulative aging and usage of the seat (130, 132, 134, 136, 138), and uses the developed adjustment value to compensate the operation of the system (142, 102, 104). The aging adjustment value is determined primarily as a function of occupant weight and time of seat occupancy, and the compensation is achieved by using the aging adjustment value to adjust either the estimated weight, or a threshold to which the measured pressure is compared for purposes of deciding if restraint deployment should be enabled (142).

Abstract translation: 改进的乘员体重检测系统（10）测量设置在泡沫座垫内或其下的流体填充的气囊（20）中的压力，作为乘员重量的指示，并且周期性地调节压力与乘员重量的关系以补偿变化 由于泡沫座垫（142,102,104）的老化和使用。 系统控制器（50）基于座椅（130,132,134,136,138）的累积老化和使用的量度来开发老化调整值，并且使用开发的调整值来补偿系统的操作（ 142,102,104）。 老化调整值主要根据乘员体重和座位占用时间的函数确定，并且通过使用老化调整值来调整补偿，以调整估计的重量或测量压力的阈值，以将 决定是否启用限制部署（142）。