Discussion in "8051 Discussion Forum" started by    sonali_maow    Sep 20, 2012.
Thu Sep 20 2012, 10:29 am
#1
Hi,

How to write assembly code for electronics speedometer?plz help me
I am using 89c2051 ic and lcd. already generate rpm and count pulse using these
how to calculate speed.

Thank u.
Fri Sep 21 2012, 12:07 am
#2
If you're calculating RPM from wheel then the RPM to Linear Velocity formula is:
v = r × RPM × 0.10472
Where:
v: Linear velocity, in m/s
r: Radius, in m
RPM: Angular velocity, in RPM (Rounds per Minute)

If in case you're dealing with engine RPM then:

vehicle speed in miles/hour = (0.00595) * (RPM * r) / (R1 * R2)

where:
RPM = engine speed, in revolutions/minute
r = loaded tire radius (wheel center to pavement), in inches
R1 = transmission gear ratio
R2 = rear axle ratio

 ugoo5000 like this.
Tags RPM to m/sRPM to linear speedRPM to velocityangular speed to linear speed

Get Social

Information

Powered by e107 Forum System

Downloads

Comments

lnCar
Thu Dec 08 2022, 12:03 am
JordanPruff
Wed Dec 07 2022, 06:13 pm
Tomnuabs
Wed Dec 07 2022, 07:51 am
Charleshek
Tue Dec 06 2022, 09:28 pm
TicePex
Sun Dec 04 2022, 02:02 pm
QuaderiPex
Sat Dec 03 2022, 05:18 pm
Singexy
Fri Dec 02 2022, 12:46 am
HoraceIdior
Thu Dec 01 2022, 05:17 am