发明名称 |
System for obtaining a velocity of a moving object from a speed sensor with adjustment of a speed conversion coefficient |
摘要 |
<p>A speed conversion coefficient calculating section 104 calculates a ratio of a GPS Doppler velocity calculated by a GPS velocity calculating section 101 to a vehicle speed measured by a speed sensor 102, thereby obtaining a speed conversion coefficient. There are provided a plurality of filtering sections 105-108 for averaging momently produced speed conversion coefficients. A filter selecting section 109 selects an optimum filtering section among these filtering sections 105-108. If a ratio of the speed conversion coefficient resultant from the speed conversion coefficient calculating section 104 to a presently adopted speed conversion coefficient is not within a predetermined range, an abnormality detecting & initializing section 110 notifies abnormality and initializes calculation process of the speed conversion coefficient in response to detection of such an abnormality. <MATH></p> |
申请公布号 |
EP0690314(A1) |
申请公布日期 |
1996.01.03 |
申请号 |
EP19950110146 |
申请日期 |
1995.06.29 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
MAEDA, HIROYUKI;AJIMA, TAKUMI |
分类号 |
G09B29/10;G01C21/00;G01C21/12;G01C21/28;G01S1/00;G01S19/19;G01S19/21;G01S19/26;G01S19/49;G01S19/52;G08G1/0969;(IPC1-7):G01S5/14;G01S1/04;G01C21/20 |
主分类号 |
G09B29/10 |
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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