Vehicle Speed Calculator

twang · Post by **twang** » Thu Aug 11, 2011 9:21 am

Hello,

I got an application about calcuting the vehicle speed and mileage by the transmission shaft speed what is broadcasted by the Transmission.

For different vehicle, they will have different tire sizes and differential ratios etc, can we set these values through display buttons? If yes, will be great for customer common use....

If you have an example to achieve these, can you attach the .db3 file for me ?

Thanks.

Terry

Post by **ksaenz** » Thu Aug 11, 2011 5:12 pm

Hello Terry,

I attached a configuration that calculates Vehicle Speed from Shaft Speed, Differential Ratio, and Tire Diameter and it lets you adjust the variables.

Regards,

ksaenz

twang · Post by **twang** » Wed Nov 16, 2011 5:05 am

Thanks Kristain.

Could anyone else who can tell me how to calculate mileages?

Post by **ksaenz** » Mon Nov 21, 2011 9:12 am

Hello Terry,

I added a new variable with a calculation event to be fired from a state machine with a recurring timer of 1s.

I also set the new variable to be saved to nv memory every 60s.

Regards,

ksaenz

twang · Post by **twang** » Tue Nov 22, 2011 9:51 am

i don't understand the calculator event: "UserDefinedVariable.Vehicle Distance"+("UserDefinedVariable.Vehicle Speed"/3600)

As I know, the tirp distance should be equal Speed* time......

Post by **ksaenz** » Tue Nov 22, 2011 10:18 am

Hello Terry,

You are correct, and in this case, since we are executing the calculation event every second our time is 1/3600 because there are 3600 seconds in an hour and the speed is in kilometer per hour.

Regards,

ksaenz

twang · Post by **twang** » Wed Jul 11, 2012 10:06 am

Hello,

How to calculator the total trip distance by vehicle speed?

Tks,

Terry

Post by **ksaenz** » Fri Jul 13, 2012 8:01 am

If you want to calculate trip distance instead of total distance you can use the same formula but add a calculation event to reset the value to 0.

Regards,

ksaenz

Vehicle Speed Calculator

Vehicle Speed Calculator

Re: Vehicle Speed Calculator

Re: Vehicle Speed Calculator

Re: Vehicle Speed Calculator

Re: Vehicle Speed Calculator

Re: Vehicle Speed Calculator

Re: Vehicle Speed Calculator

Re: Vehicle Speed Calculator