ADC Timing Concepts

[be80be]

Here one more thing the sensor only updates 25.5 times a second is this fast enough for what he is wanting to use it for

 

[ericgibbs]

Here one more thing the sensor only updates 25.5 times a second is this fast enough for what he is wanting to use it for

hi,
Assume the car to parking bay closure speed is 3.6km/hr, thats 1m/sec [which is too fast IMO] also assume that the maximum range of the sensor is 1mtr.

For a constant closure speed of 1m/sec and say 25 distance samples/sec thats a new distance every 1/25 = 0.04mtrs = 4cm.

Of course if he keeps moving at this rate the car will overshoot the parking bay.

When the OP states autonomous parking, is that auto speed and position control when parking the car or just stop the car when the distance is less than 'X' cms from the bay end.????

 

[be80be]

Well that put's some light on how your figuring this out ericgibbs.

Eric the range of this Ir senor is less then a meter 80 cm max better have good brakes.

 

[qtommer]

hey guys, i actually implemented the speed through servo control cuz my aim is not speed but rather precision parking. i've managed to get everything working fine thank you everyone so much...your level of knowledge inspires me