Author Topic: Sharp GP2Y0A02YK IR Sensor  (Read 3348 times)

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Offline xamirxTopic starter

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Sharp GP2Y0A02YK IR Sensor
« on: May 10, 2007, 07:52:55 AM »
Is there anyway one can get around the minimum detecting distance of these sensors? I have a university robotics project, where my robot must detect a box from ~1m and move the robot to the box accordingly. It must then place a an object into the box. The Sharp GP2Y0A02YK IR Sensor is great because its accurate and is highly robust. The only problem is the minimum detection distance of 20cm... Is there anyway to get around that? Hardware or software?

Thanks

Offline JonHylands

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Re: Sharp GP2Y0A02YK IR Sensor
« Reply #1 on: May 10, 2007, 08:00:46 AM »
There are really two possibilities I can think of:

- mount the sensor at the back of your robot, looking forwards over the top of your robot - if your robot is longer than 20 cm, then the minimum distance is at the front of your robot
- use a close-IR sensor to detect when the object is inside the min range. The Sharp sensors have an interesting property in that they start measuring backwards once an object is inside the min range, so you can possibly use a combination of a close IR sensor that is tuned to max at 20 cm, and the Sharp sensor.

- Jon

Offline xamirxTopic starter

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Re: Sharp GP2Y0A02YK IR Sensor
« Reply #2 on: May 10, 2007, 02:48:18 PM »
Thanks Jon. I think I'll try positioning the sensor further back. We're kinda on a tight budget so we won'y be able to afford another sensor.

Thanks.

 


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