Accelerometer Sensor

[Pesticida]

HI :-)

Thanks People,

Skimask the Car don't change the Speed.

Thats mean that a Elevator for a little bit is accelerating and then have a costant Speed for a time T.
When is slowing down the acceleration is going in the other direction and the speed is decreasing.

Thats mean that I need a faster Bandwith,I use ADCIN and after that Hserout on my Microcontroller every 50 mS

Is that correct?

[skimask]

For the most part, yes.
Read the ADC as fast as you can, compute the data later if you can, otherwise it'll take away from the time that could be used to capture another sample.

[Pesticida]

Skimask what bandwith should I use ,between 1Hz to 2Khz ?

I use this for the moment:

Main:

ADCIN 0, adval[0]
Pause 1
ADCIN 1, adval[1]
pause 1
hserout ["A",DEC3 Adval[0],"B",DEC3 Adval[1],13,10]
Pause 50
Goto Main

Maybe I can use this

Main:

ADCIN 0, adval[0]
ADCIN 1, adval[1]

hserout ["A",DEC3 Adval[0],"B",DEC3 Adval[1],13,10]
Pause 30
Goto Main

Regards Pesti

[Pesticida]

Ok,

Now when I correct understand I must the first Acceleration Change to measure How long the Acceleration is during then I know the distance for that Time for ex. 1 Seconds.
And I can now found the distance for one second,when the speed is constant then is the Acceleration = 0 and after 10 Seconds I can found the final Distance!

I hope is my thinking correct!

Regards

[Pesticida]

Hello,

Ok I'm coming now to the conclusion that the G sensor is not the really thing for measure if a Elevator is moving and how fast is moving ! :-)

Maybe have some one another better Ideas,I'm using for the moment current measurement to see if the Elevator is moving,but I'm searching for a Modern Solution that give me more Information like ~speed,Movement,Vibration and so on.

Thanks

Regards Pesti

[luminas]

You can add optical encoder to the main motor shaft for speed, acceleration measurement . Vibration can be measured with accelerometer

[CocaColaKid]

An accelerometer will just measure the time is takes to go from one speed to another speed, not the distance. It has no way of knowing how far it has traveled unless it is constantly accelerating and decelerating.