Sharp Distance sensor - Electronic Circuits Projects Diagrams Free

Electronics4you · 4th September 2005, 10:32 AM

Hi All

I have been looking in the datasheet for the Sharp distance sensor GP2Y0D340K, but couldn't figure out, how the output is been converted. Does it generate an output in the same time period as the distance to the object, or what?

Electronics4you
______________________________________

bloody-orc · 4th September 2005, 01:01 PM

could you post the data here please? or the addres

Electronics4you · 4th September 2005, 01:30 PM

Yes of course

http://www.active-robots.com/product...gp2y0d340k.pdf

panic mode · 4th September 2005, 05:15 PM

it looks like time between two rising edges is proportional to the distance.
the scale is 0.1ms/cm.

bloody-orc · 4th September 2005, 07:27 PM

as this gives you a low pulse, you could mesure the distance and read the pulse with the sensor and display the result on a LCD or om computer. i think that it is so tha 1 cm = 1ms of low pulse, but i'm not 90% shure.

panic mode · 4th September 2005, 07:44 PM

i don't think so, if it was 1ms=1cm, it would require 60ms output for 60cm distance.

Gorgon · 4th September 2005, 10:57 PM

Quote:

Originally Posted by Electronics4you

Hi All

I have been looking in the datasheet for the Sharp distance sensor GP2Y0D340K, but couldn't figure out, how the output is been converted. Does it generate an output in the same time period as the distance to the object, or what?

Hi Electronics4you,
Looking through the datasheet, I think this chip is a fixed distance indicator. If you are 'far' away from the reflective surface, the Vo is '1'. When you are 40 +/-5cm and closer from the surface the Vo output is '0'. At least this is how I read the info in the datasheet.

TOK

jkmadsci · 5th September 2005, 01:32 AM

If you check all the solder joints with a voltmeter you will find one that varies voltage proportional to distance. I believe it was 2 to 4 volts or so.

**Nigel Goodwin** · 5th September 2005, 09:45 AM

As I remember, there are TWO versions of the Sharp distance sensors, one provides a varying DC voltage output, which represents the distance measured. The other type just provides a switched output at a certain range, so can't actually measure varying distances - so you need to make sure you get the one you need!.

panic mode · 5th September 2005, 02:23 PM

Sharp makes lots of parts. Distance sensors from Sharp i remember dealing with ware GP2D1x series. They came in different versions too (fixed output, analog output and serial output). Ones i have are with analog output...

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4th September 2005, 10:32 AM	(permalink)
Electronics4you	Sharp Distance sensor Hi All I have been looking in the datasheet for the Sharp distance sensor GP2Y0D340K, but couldn't figure out, how the output is been converted. Does it generate an output in the same time period as the distance to the object, or what? Electronics4you ______________________________________

4th September 2005, 01:01 PM	(permalink)
bloody-orc	could you post the data here please? or the addres __________________ Need Help? Press F1 If that doesn\'t help you, ask me... I might know better.

4th September 2005, 01:30 PM	(permalink)
Electronics4you	Yes of course http://www.active-robots.com/product...gp2y0d340k.pdf

4th September 2005, 05:15 PM	(permalink)
panic mode	it looks like time between two rising edges is proportional to the distance. the scale is 0.1ms/cm.

4th September 2005, 07:27 PM	(permalink)
bloody-orc	as this gives you a low pulse, you could mesure the distance and read the pulse with the sensor and display the result on a LCD or om computer. i think that it is so tha 1 cm = 1ms of low pulse, but i'm not 90% shure. __________________ Need Help? Press F1 If that doesn\'t help you, ask me... I might know better.

4th September 2005, 07:44 PM	(permalink)
panic mode	i don't think so, if it was 1ms=1cm, it would require 60ms output for 60cm distance.

5th September 2005, 01:32 AM	(permalink)
jkmadsci	If you check all the solder joints with a voltmeter you will find one that varies voltage proportional to distance. I believe it was 2 to 4 volts or so.

5th September 2005, 09:45 AM	(permalink)
Nigel Goodwin	As I remember, there are TWO versions of the Sharp distance sensors, one provides a varying DC voltage output, which represents the distance measured. The other type just provides a switched output at a certain range, so can't actually measure varying distances - so you need to make sure you get the one you need!. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

5th September 2005, 02:23 PM	(permalink)
panic mode	Sharp makes lots of parts. Distance sensors from Sharp i remember dealing with ware GP2D1x series. They came in different versions too (fixed output, analog output and serial output). Ones i have are with analog output...