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    • 42. 发明授权
    • Quick-response accelerometer with increased contact dwell time
    • 快速响应加速度计,增加接触停留时间
    • US5369231A
    • 1994-11-29
    • US949786
    • 1992-09-22
    • Steven J. AndersonLeonard W. Behr
    • Steven J. AndersonLeonard W. Behr
    • G01P15/08G01P1/00G01P15/00G01P15/135G01P21/00H01H35/14
    • B24B49/105G01P1/003G01P15/0891G01P15/135G01P21/00H01H35/14H01H2300/052
    • An acceleration sensor comprises a tube formed of an electrically-conductive, nonmagnetic material; an annular magnetically-permeable element, such as a iron washer, encircling a longitudinal portion of the tube; a magnetic sensing mass in the tube which magnetically interacts with the washer so as to be magnetically biased towards a first or "rest" position in the tube characterized in that a longitudinal portion of the sensing mass is situated within the portion of the tube encircled by the washer, the sensing mass being displaced from its rest position in the tube towards a second position therein in response to an accelerating force exceeding the magnetic bias thereon; and a switch operated by the sensing mass when the sensing mass is displaced to its second position in the tube. The instant accelerometer features a low threshold magnetic bias of the sensing mass of perhaps a fraction of 1 g to provide a quickened sensing mass response to acceleration inputs of short duration; whereafter the magnetic bias increases so as to peak when the sensing mass is displaced to a position within the passage intermediate its first and second positions therein, and thereafter decreases to a value equal to or slightly greater than 0.8 gs to maximize switch contact dwell time.
    • 加速度传感器包括由导电的非磁性材料形成的管; 围绕管的纵向部分的环形导磁元件,例如铁垫圈; 所述管中的磁感应质量块与所述垫圈磁性相互作用,以便朝向所述管中的第一或“静止”位置被磁偏置,其特征在于,所述传感块的纵向部分位于所述管的所述部分内, 所述洗涤器响应于超过其上的磁偏压的加速力,所述感测质量从其在所述管中的静止位置移动到其中的第二位置; 以及当感测质量位移到其管中的第二位置时由感测质量块操作的开关。 瞬时加速度计具有传感质量的低阈值磁偏差,可能是1g的几分之一,以为加速输入短时间提供加速的感测质量响应; 此后,磁偏压增加,以便当感测质量位移到通道内位于其中的第一和第二位置之前的位置时,其峰值为峰值,然后减小到等于或稍大于0.8gs的值以最大化开关接触停留时间。
    • 44. 发明授权
    • Regulated negative calibration pulse generator
    • 调节负校准脉冲发生器
    • US5305629A
    • 1994-04-26
    • US972566
    • 1992-11-06
    • James A. CampbellJames R. PayeKenneth M. Klemczak
    • James A. CampbellJames R. PayeKenneth M. Klemczak
    • G01P21/00
    • G01P21/00
    • A circuit for generating a regulated negative voltage output pulse for use in calibrating a transducer, such as used in sensing an acceleration profile of a moving object, comprises a transistor responsive to a periodically generated control pulse for reversing the polarity charge on a capacitor. A negative voltage charge on the capacitor activates a negative voltage regulator to generate the desired regulated negative voltage calibration pulse. A pair of resistors are series connected to the regulated negative voltage output and a positive voltage reference source to provide an output for an external monitoring device to verify the generation of an accurate regulated negative voltage calibration pulse. The pair of resistors also provide a bypass of the negative voltage regulator when no external control pulse is present, thereby establishing a positive voltage output for the calibration pulse generating circuit when a regulated negative voltage calibration pulse is not being generated. The present invention is able to use a positive voltage power supply, or battery, to generate the desired regulated negative voltage calibration pulse output.
    • 用于产生用于校准换能器的调节负电压输出脉冲的电路,例如用于检测移动物体的加速度曲线,包括响应周期性产生的控制脉冲以反转电容器上的极性电荷的晶体管。 电容器上的负电压将激活负电压调节器以产生所需的调节负电压校准脉冲。 一对电阻串联连接到调节负电压输出和正电压参考源,为外部监控设备提供输出,以验证精确调节的负电压校准脉冲的产生。 当不存在外部控制脉冲时,该对电阻器还提供负电压调节器的旁路,从而在不产生调节的负电压校准脉冲时为校准脉冲发生电路建立正电压输出。 本发明能够使用正电压电源或电池来产生所需的调节负电压校准脉冲输出。
    • 45. 发明授权
    • Self-compensating accelerometer
    • 自补偿加速度计
    • US5163325A
    • 1992-11-17
    • US776071
    • 1991-10-10
    • Craig W. WhiteLeonard W. BehrKevin E. Musser
    • Craig W. WhiteLeonard W. BehrKevin E. Musser
    • G01P15/08G01P15/12G01P21/00
    • G01P15/0802G01P15/123G01P21/00G01P2015/0828
    • An acceleration sensor having a sensing mass supported relative to a frame by a plurality of beams having a plurality of resistors integral therewith. The resistance of the beam resistors varies as the sensing mass is displaced relative to the frame in response to acceleration of the frame in a direction generally normal to the plane of beam extension. The displacement of the sensing mass due to such acceleration produces a corresponding change in the output of a Wheatstone bridge incorporating the beam resistors in the legs thereof. At least one leg of the bridge additionally has a resistor of variable resistance in series with the beam resistor thereof, the resistance of which is controlled by a microprocessor, whereby the range of bridge outputs is adjusted to initially compensate for manufacturing tolerances and thereafter compensate for temperature effects and component aging. The resistance is varied by way of the microprocessor switching fixed resistors in paarallel connection with the leg of the bridge.
    • 一种加速度传感器,其具有通过多个具有与其成一体的电阻器的多个梁相对于框架支撑的传感质量。 束电阻器的电阻随着感测质量相对于框架的移动而变化,响应于框架在大致垂直于光束延伸平面的方向上的加速度。 由于这种加速度导致的感测质量的位移产生了在其腿部结合有束电阻器的惠斯通电桥的输出的相应变化。 桥的至少一条腿还具有与其电阻器串联的可变电阻的电阻器,其电阻由微处理器控制,由此调节桥式输出的范围以最初补偿制造公差,然后补偿 温度影响和组件老化。 电阻随着微处理器的切换而变化,固定电阻器与桥的腿部并联连接。
    • 48. 发明授权
    • Air bag firing circuit
    • 气囊发射电路
    • US5085464A
    • 1992-02-04
    • US612783
    • 1990-11-14
    • Leonard W. BehrCraig W. White
    • Leonard W. BehrCraig W. White
    • B60R21/16B60R21/01
    • B60R21/0176
    • An air bag firing circuit comprises a firing path which includes redundant acceleration sensors, i.e., two sensors of like threshold connected in parallel. Each sensor comprises normally-open switch means operated by an inertial mass and shunted by a resistor. A battery maintains a known voltage across the firing path while a microprocessor checks the integrity of the firing path by periodically reading and comparing the voltages achieved at various points thereabout. The microprocessor further tests each sensor individually by electromagnetically biasing the sensor's inertial mass in a manner so as to close the switch means thereof while determining the effect of such testing on the voltages achieved about the firing path. Upon the detection of a sensor failure, the microprocessor electromagnetically biases the sensor's inertial mass in a manner so as to maintain the switch means thereof in its open position, whereby the malfunctioning sensor is functionally removed from the firing path without impairing the function of the other sensor connected in parallel therewith.
    • 50. 发明授权
    • Magnetically-damped, testable accelerometer
    • 磁阻,可测试的加速度计
    • US4827091A
    • 1989-05-02
    • US248143
    • 1988-09-23
    • Leonard W. Behr
    • Leonard W. Behr
    • G01P15/00G01P15/135G01P21/00H01H35/14
    • B24B49/105G01P15/135G01P21/00H01H35/14H01H2300/052H01H35/142
    • An acceleration sensor comprises a housing having a magnetically permeable element, such as a steel washer, secured thereto proximate with an end of a cylindrical passage formed therein; a magnetic sensing mass in the passage which is displaced in response to acceleration of the housing from an initial position within the passage proximate the steel washer to a second position within the passage when such acceleration overcomes the magnetic bias of the sensing mass towards the steel washer; a pair of electrically conductive rings encompassing the passage so as to provide magnetic damping for the sensing mass during the displacement thereof; and a pair of beam contacts projecting from the housing into the passage so as to be bridged by the sensing mass when the sensing mass is displaced to the second position within the passage. The accelerometer further comprises a pair of oppositely-wound electrical coils encompassing the passage proximate the initial position and the second position of the sensing mass therein, respectively. Upon the delivery of a direct current to the coils, the sensing mass is magnetically biased to the second position within the passage, whereby the beam contacts are bridged by the sensing mass to confirm the operability of the sensor.