发明名称 |
Weight measurement system, method and weight sensor |
摘要 |
A weight measurement system for automatically calibrating weight sensors installed on a motor vehicle seat. The system performs a calibrate operation whenever a valid weight measurement window is found. A valid weight measurement window is defined by the seat being empty, an associated door being open and an associated seat buckle being unlatched. The system operates in a factory install mode to establish a reference zero set value and in a diagnostic mode to establish a temporary zero set value that reflects drift of the weight sensors. The temporary zero set value is used by a weight management program to control occupant restraint devices. The weight sensor has an integral body with two lands connected by an elastomeric beam. The elastomeric beam has a pair of opposed surfaces that define a region of minimum thickness and one or more regions of maximum thickness. A resistive strain gauge element is disposed on the region of minimum thickness. The system measures changes in the resistance of the weight sensor caused by weight of the seat. |
申请公布号 |
GB2380555(B) |
申请公布日期 |
2004.09.08 |
申请号 |
GB20030002973 |
申请日期 |
2001.08.07 |
申请人 |
* AUTOLIV ASP INC |
发明人 |
MATTHEW J * KNOX |
分类号 |
B60N2/00;B60R21/01;B60R21/013;B60R21/015;G01G19/414;G01G23/01;(IPC1-7):G01L1/22;G01G19/12;B60R22/48;B60R21/02 |
主分类号 |
B60N2/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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