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    Vehicle occupant weight estimation apparatus having controlled volume seat bladder
    1.
    发明授权
    Vehicle occupant weight estimation apparatus having controlled volume seat bladder 失效
    具有受控体积座椅膀胱的车辆乘员体重估计装置

    公开(公告)号：US06058341A

    公开(公告)日：2000-05-02

    申请号：US39238

    申请日：1998-03-16

    申请人： Robert Joseph Myers ,  Morgan Daniel Murphy ,  Robert Allan Perisho, Jr. ,  Pamela Ann Roe ,  Duane Donald Fortune ,  Stuart Stites Sullivan ,  William Lloyd Piper ,  Robert Keith Constable

    发明人： Robert Joseph Myers ,  Morgan Daniel Murphy ,  Robert Allan Perisho, Jr. ,  Pamela Ann Roe ,  Duane Donald Fortune ,  Stuart Stites Sullivan ,  William Lloyd Piper ,  Robert Keith Constable

    IPC分类号： B60N2/00 ,  B60N2/90 ,  B60N5/00 ,  B60R21/01 ,  B60R21/015 ,  B60R21/16 ,  G01G5/04 ,  G01G5/06 ,  G01G19/414 ,  G01G19/52 ,  G01G23/48 ,  G01L1/02 ,  G06F17/00 ,  G05D3/00

    CPC分类号： B60R21/01516 ,  B60N2/002 ,  B60R21/0152 ,  G01G19/4142 ,  G01G5/04 ,  G01L1/02

    摘要： A weight estimation apparatus for the passenger seat of a motor vehicle, in which a single bladder substantially encompassing the seat bottom is evacuated and then inflated with a known volume of air. The average pressure in the bladder is determined to estimate the passenger weight. According to a first embodiment, the apparatus continues to monitor the average pressure, and the process is re-initiated if the average pressure changes by at least a predetermined percentage. According to a second embodiment, a bleed valve allows the pressure in the bladder to slowly escape, and the apparatus monitors the rate of change in pressure as a corresponding indication of passenger weight; in this embodiment, the process of evacuating and inflating is re-initiated if the monitored change in pressure does not correspond with the estimated weight. The sides of the bladder may be pleated to permit the bladder to expand under the weight of an occupant without stretching the bladder, and thereby affecting the average pressure. A temperature sensor may be disposed in proximity to the bladder provides a temperature signal for compensating the weight estimation for temperature variations. Also, the pressure sensor may be configured to sense the gage pressure--that is, the differential pressure between the bladder pressure and atmospheric pressure; alternatively, the pressure sensor may be configured to detect absolute pressure, and a second absolute pressure sensor responsive to atmospheric pressure may be used to compensate for changes in atmospheric pressure.

    摘要翻译： 一种用于机动车辆的乘客座椅的重量估计装置，其中基本上围绕座椅底部的单个囊被抽真空，然后用已知体积的空气充气。 确定膀胱中的平均压力以估计乘客体重。 根据第一实施例，设备继续监视平均压力，并且如果平均压力改变至少预定百分比，则重新启动该过程。 根据第二实施例，排气阀允许气囊中的压力缓慢地逸出，并且该装置监测作为乘客重量的相应指示的压力变化率; 在该实施例中，如果所监视的压力变化与所估计的重量不对应，则重新启动排气和充气过程。 膀胱的侧面可以打褶以允许膀胱在乘员的重量下膨胀而不拉伸膀胱，从而影响平均压力。 温度传感器可以设置在靠近气囊的位置，提供用于补偿温度变化的重量估计的温度信号。 此外，压力传感器可以被配置为感测压力压力，即，气囊压力和大气压力之间的压差; 或者，压力传感器可以被配置为检测绝对压力，并且可以使用响应于大气压力的第二绝对压力传感器来补偿大气压力的变化。

    Strain gauge with steel substrate
    3.
    发明授权
    Strain gauge with steel substrate 失效
    应变计与钢基材

    公开(公告)号：US5959214A

    公开(公告)日：1999-09-28

    申请号：US995801

    申请日：1997-12-22

    申请人： Aparna Vaidyanthan ,  Robert Keith Constable ,  Shailendra Verma

    发明人： Aparna Vaidyanthan ,  Robert Keith Constable ,  Shailendra Verma

    IPC分类号： G01L1/22 ,  H01L29/96

    CPC分类号： G01L1/2293

    摘要： A strain gauge has a stainless steel substrate with a dielectric coating comprising two dielectric layers. A circuit comprising conductors, resistors and piezoresistors in a Wheatstone bridge configuration is formed on the dielectric. One dielectric layer is to adhere to the steel and a second is to form a barrier against diffusion of the first layer into the piezoresistor material. An amplification and signal conditioning circuit is applied adjacent the bridge. The steel substrate is to be welded or bolted at its marginal portions to a structure subject to strain.

    摘要翻译： 应变计具有不锈钢基底，其具有包括两个电介质层的电介质涂层。 包括惠斯通电桥配置中的导体，电阻器和压电阻器的电路形成在电介质上。 一个电介质层将粘附到钢上，其次是形成防止第一层扩散到压敏电阻材料中的屏障。 在桥附近施加放大和信号调理电路。 钢基材将在其边缘部分被焊接或螺栓连接到受到应变的结构。

    Fast acting FET test circuit with current detection for SIR diagnostics
    4.
    发明授权
    Fast acting FET test circuit with current detection for SIR diagnostics 失效
    具有SIR诊断电流检测功能的快速作用FET测试电路

    公开(公告)号：US5872460A

    公开(公告)日：1999-02-16

    申请号：US726897

    申请日：1996-10-04

    申请人： Paul T. Bennett ,  Richard Joseph Ravas ,  Robert Keith Constable ,  Randall C. Gray ,  Terrell Anderson

    发明人： Paul T. Bennett ,  Richard Joseph Ravas ,  Robert Keith Constable ,  Randall C. Gray ,  Terrell Anderson

    IPC分类号： B60R21/01 ,  G01R31/00 ,  G01R31/26 ,  G01R31/28 ,  B60R21/32

    CPC分类号： B60R21/0173 ,  G01R31/2829 ,  G01R31/007 ,  G01R31/2621

    摘要： The firing circuit of an inflatable restraint system is tested to verify operation of two FETs in series with a squib which are used to apply current to the squib. For the test the squib is biased to an intermediate voltage and each FET is turned on alone to apply battery or ground voltage to the squib. High and low voltage detectors sense the voltage excursion past respective thresholds to verify FET operation. A current detector for each FET senses a short when its FET is conducting, and a logic circuit immediately turns off the FET to result in a very brief FET on time. In addition, the voltage detectors may be used to detect shorts prior to FET testing and also to turn off or hold off the FETs when a high or low voltage is detected upon FET testing.

    摘要翻译： 测试充气约束系统的点火电路，以验证与用于将电流施加到爆管的爆管串联的两个FET的操作。 对于测试，爆管被偏置到中间电压，并且每个FET单独接通以将电池或接地电压施加到爆管。 高低电压检测器通过相应的阈值感测电压偏移，以验证FET的工作。 每个FET的电流检测器在其FET导通时感测到短路，并且逻辑电路立即关闭FET，以及时导致非常短暂的FET。 此外，电压检测器可以用于在FET测试之前检测短路，并且还可以在FET测试时检测到高电压或低电压时关断或关断FET。

    Fast acting FET test circuit for SIR diagnostics
    5.
    发明授权
    Fast acting FET test circuit for SIR diagnostics 失效
    用于SIR诊断的快速作用FET测试电路

    公开(公告)号：US5666065A

    公开(公告)日：1997-09-09

    申请号：US651073

    申请日：1996-05-22

    申请人： Richard Joseph Ravas ,  Terrell Anderson ,  Robert Keith Constable

    发明人： Richard Joseph Ravas ,  Terrell Anderson ,  Robert Keith Constable

    IPC分类号： G01M17/007 ,  G01R31/28 ,  B60Q1/00 ,  G01M19/00

    CPC分类号： G01R31/2829 ,  G01M17/0078

    摘要： The firing circuit of an inflatable restraint system is tested to verify operation of two FETs in series with a squib which are used to apply current to the squib. For the test the squib is biased to an intermediate voltage and each FET is turned on alone to apply battery or ground voltage to the squib. High and low voltage detectors sense the voltage excursion past respective thresholds to verify FET operation, and a logic circuit immediately turns off the FET to result in a very short FET on time. If a short is present before the FET is commanded on, a detector and the logic circuit prevents FET conduction to avoid firing or degrading the squib.

    摘要翻译： 测试充气约束系统的点火电路，以验证与用于将电流施加到爆管的爆管串联的两个FET的操作。 对于测试，爆管被偏置到中间电压，并且每个FET单独接通以将电池或接地电压施加到爆管。 高电压和低电压检测器通过相应的阈值感测电压偏移，以验证FET的工作状态，逻辑电路立即关闭FET，以及时导致非常短的FET。 如果在FET被命令之前存在短路，则检测器和逻辑电路可防止FET导通以避免点火或降低爆管。