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公开(公告)号：EP0951638A1
公开(公告)日：1999-10-27
申请号：EP98901801.0
申请日：1998-01-09
CPC分类号： G01L5/103 , B60R21/01516 , G01G19/4142 , G01L1/125 , G01L1/127
摘要： A Villari effect sensor comprises a sensing rod constructed from a magnetostrictive material. An alternating current signal applied to an overlapping drive coil is inductively coupled by the sensing rod to the sensing coils and generates a signal thereon, responsive to the permeability of the magnetostrictive sensing rod which decreases responsive to the applied load. The sensing rod comprises one or more sections, each having a distinct cross sectional area, and a sensing coil is associated with each section. A signal processor calculates the magnitude of the applied force from either the maximum flux density, or by differencing the first and third harmonics of the signal from the sensing coil. The weight of an occupant on a vehicle seat (300) is measured by either incorporating a tensile force measuring Villari effect sensor in series with the seat springs, or incorporating a compressive force measuring Villari effect sensor in series with seat posts (314).
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公开(公告)号：EP0696971A1
公开(公告)日：1996-02-21
申请号：EP95912664.0
申请日：1995-03-02
IPC分类号： B60R21
CPC分类号： B60R21/0136
摘要： A vehicle impact detection system (10) for controlling the actuation of an occupant safety restraint device (24) includes a sensor array (12) affixed to an outer surface (16) of the vehicle for continuously generating a two-dimensional output (14) representative of the condition of the outer surface, and a processor/evaluation circuit (20) for performing advanced array signal processing on the sensor array output. The system (10) can reliably predict severe impacts within a few milliseconds of initial impact, and therefore is particularly suited for controlling the actuation of a safety restraint device in response to side impacts.
摘要翻译： 一种用于控制乘客安全约束装置（24）的致动的车辆碰撞检测系统（10）包括固定到车辆的外表面（16）以连续地产生二维输出（14）的传感器阵列（12） 表示外表面状况的处理器/评估电路（20），用于对传感器阵列输出执行高级阵列信号处理。 系统（10）可以在初始冲击的几毫秒内可靠地预测严重冲击，并且因此特别适合于响应于侧面碰撞而控制安全约束装置的致动。
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公开(公告)号：EP0885139B1
公开(公告)日：2004-09-29
申请号：EP97954186.9
申请日：1997-12-19
发明人： SEWELL, Michael, R. , BOWMAN, Todd, K. , PALMER, Dennis, E. , CECH, Leonard, S. , GILLIS, Edward, J. , TRAN, Vinh H. , STANLEY. J. Greg
CPC分类号： B60R21/01516 , B60N2/002 , B60R21/01522 , G01G19/4142 , Y10S297/03
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公开(公告)号：EP0885139A1
公开(公告)日：1998-12-23
申请号：EP97954186.0
申请日：1997-12-19
发明人： SEWELL, Michael, R. , BOWMAN, Todd, K. , PALMER, Dennis, E. , CECH, Leonard, S. , GILLIS, Edward, J. , TRAN, Vinh H. , STANLEY. J. Greg
CPC分类号： B60R21/01516 , B60N2/002 , B60R21/01522 , G01G19/4142 , Y10S297/03
摘要： A seat weight sensor (10) incorporates a fluid filled bladder (12) placed in series with the load path in the seat (3), whereby a load applied to and distributed across the bladder (12) increases the pressure of the fluid therein. The pressure of the fluid is measured by a pressure sensor (20) and is substantially proportional to the magnitude of the applied load, and substantially inversely proportional to the supported area of the bladder (12). The output signal is substantially linear with respect to weight. Preferably, the amount of fluid in the bladder should be less than the capacity of the bladder when the bladder is unloaded. The seat weight sensor (10) is incorporated into an accupant restraint system (7) for controlling the safety restraint system responsive to the weight of the occupant (5).
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