The invention provides a method for analyzing a parking congestion index, and the method comprises the steps: obtaining the average speed V0 of a floating car after entering a parking lot from a database when the parking lot is not congested, presetting an acquisition period T, obtaining the driving data of the floating car after entering the parking lot from an entrance, the driving data comprising the position point L and the real-time speed V of the floating car; performing data acquisition on the floating car once every other acquisition period T, judging whether the acquired running speed V of the floating car is smaller than an average speed V0 or not, and obtaining an actual average speed of the floating car according to a running distance Ln-L1 and running time (n-1) T when the acquired actual running speed V of the floating car is smaller than the average speed V0, and dividing the actual average speed of the floating car by the average speed V0 of the floating car when the floating car is not congested to obtain the congestion index, wherein n is an integer larger than 1, R belongs to [0, 1), n is the number of times of collection, and the more the R approaches 0, the more serious the congestion condition between the first position point L1 and the nth position point Ln is.
本发明提供了一种分析停车拥挤指标的方法,包括从数据库中获取停车场不拥堵时浮动车进入停车场后的平均速度V0,预设一个采集周期T,获取一浮动车从进口处进入停车场后的行车数据,行车数据包括浮动车的位置点L和实时速度V,每相隔一个采集周期T对浮动车进行一次数据采集,判断采集到的浮动车的行车速度V是否小于平均速度V0,根据采集到的浮动车的实际行车速度V小于平均速度V0时的行驶距离Ln‑L1和行驶时间(n‑1)T得到浮动车的实际平均速度,将浮动车的实际平均速度除以不拥堵时浮动车的平均速度V0得到拥堵指数n为大于1的整数,R∈[0,1),其中n为采集次数,R越趋近于0,第一位置点L1至第n位置点Ln之间的拥堵情况越严重。
Method for analyzing parking congestion index
一种分析停车拥挤指标的方法
2021-05-14
Patent
Elektronische Ressource
Chinesisch
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