发明名称 |
Traffic congestion prediction method |
摘要 |
A traffic congestion prediction method including the steps of: detecting an acceleration of a vehicle; calculating a power spectrum corresponding to a frequency from a frequency analysis of the detected acceleration; calculating a simple linear regression line of the power spectrum and calculating a maximum value of an amount of change in a gradient of the simple linear regression line in a predetermined frequency range as a maximum gradient value; detecting an inter-vehicle distance between the vehicle and a vehicle ahead; estimating an inter-vehicle distance distribution from the detected inter-vehicle distance by using a distribution estimation method; calculating a minimum value of covariance value from the estimated inter-vehicle distance distribution; estimating a distribution of a group of vehicles ahead from a correlation between the minimum value of covariance value and the maximum gradient value; and performing a real-time traffic congestion prediction based on the distribution of the group of vehicles. |
申请公布号 |
US8731809(B2) |
申请公布日期 |
2014.05.20 |
申请号 |
US201113991609 |
申请日期 |
2011.12.09 |
申请人 |
KOSHIZEN TAKAMASA;HONDA MOTOR CO., LTD. |
发明人 |
KOSHIZEN TAKAMASA |
分类号 |
G08G1/00;G08G1/01 |
主分类号 |
G08G1/00 |
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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