Measurement of the time of a signal

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alexandre
alexandre 2012-3-23
Hello,
i need some help by using Simulink ! I am working with driving cycle and i want to classify them.
The problem that i have by classifying is: in one driving cycle, i can have one OR many driving behavior ( urban AND rural for example ) !
time (s) 0 10 20 30 40 50 60 70 80
Velocity (km/h) 0 45 55 120 120 30 30 25 0
For the classification you can assume that:
Urban velocity: 0 - 50 km/h
Rural velocity: 51 - 100 km/h
highway: x > 100km/h
Question: which function / bloc can detect multiple behavior / signals for one driving cycle ?
How can i measure the time of each classification ( case with multiple driving behavior )by using Simulink?
for given cycle we have nearly:
urban = 25 s + 30s
highway= 25s
thanks
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Jan
Jan 2012-3-24
I still do not understand the question. The fact that your different threads contains slightly different information increases my confusion.
Does t=[0, 10] and velocity=[0, 45] mean, that the velocity is 0 until the time 10 (in seconds?) and that it is 45 suddenly? Does e.g. the interval [10 20] belong to the "rural" classification, perhaps partially?
This is important, but not explained yet. How did you calculate the "nearly" classification?
alexandre
alexandre 2012-3-24
1/
t=[0, 10] and velocity=[0, 45] => that means that the velocity increase until 45km/h in 10 seconds ! The velocity increase linearly ( LOOKUP TABLE )
2/
time [10 20 ], you got it... this interval of time belong between Urban & Rural ! And i want to know if there is a possibility to get the Urban-time and Rural-time by working with a embedded function or bloc
3/
My given cycle is just an example( US-Hyzem driving cycle ) , to explain how a cycle looks ( driving cycle = time + velocity )
Urban= ...s+...s and highway = ...s was just an aproximation ... i didn´t calculate it .
p.s: my english is not the best, am a french-talker... i beg your forgivness

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alexandre
alexandre 2012-3-24
hello simon,
sorry for the confusion but fact is that i have two clompletly different question:
1- calculate the driving average velocity ( by filtering the time where the velocity is equal to zero )
2- (This thread) how can measure the time where i signal activ is, while by driving there can be many driving behavior, and i want to know long> there take.
i have really big interess in Simulink but am a beginner :((
thx

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