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athukoralakasun
02-08-2013, 10:13 AM
Hi,

Can someone suggest me a good ultrasonic sensor??

It should have a very good accuracy when used for a short range. (up to 1m. total range could be anything.)
Better if it is a low cost one (<$150). But accuracy should be there.

(I found some in MaxBotix (http://www.maxbotix.com/Ultrasonic_Sensors/MB1222.htm) and Devantech (http://www.robotshop.com/devantech-srf235-pencil-beam-range-1.html). but i have no idea about there performance.

jwatte
02-08-2013, 02:01 PM
What do you mean by accuracy? Within an inch? Within a millimeter? What cone angle of dispersal/detection are you looking for? What kind of performance for muffled (soft) targets?
A simple $15 Ping-style sensor could sense obstacles that aren't too muffled between 10 cm and 2.5 meters with better-than-inch accuracy. Is that enough?

02-13-2013, 02:49 PM
@Athukoralakasun

Hello,

I am Thomas from MaxBotix Inc. I am glad to assist you regarding your application. Our sensors have great performance which you can read about at our website http://maxbotix.com/performance.htm. We have a wide variety of sensors which accommodate many types of applications. I am glad to assist you in selecting the correct sensor. Please feel free to email me at [email protected] with the details of the applications and I will be happy to make the appropriate recommendation.

Please let me know if you have any questions. I look forward to your reply.

Best regards,

Tom Bonar
Technical Support
of MaxBotix Inc.
Phone: (218) 454-0766 (tel:%28218%29%20454-0766)
Fax: (218) 454-0768 (tel:%28218%29%20454-0768)

Email: [email protected] ([email protected])
Web: www.maxbotix.com (http://www.maxbotix.com/)
Follow us on Facebook at: http://www.facebook.com/pages/MaxBotix-Inc/125159384204938 (http://www.facebook.com/pages/MaxBotix-Inc/125159384204938)

Technical support and sales are subject to
the terms and conditions listed on our
website at http://www.maxbotix.com/ (http://www.maxbotix.com/) MaxBotix,
MaxSonar,EZ0, EZ1, EZ2, EZ3, EZ4, AE0, AE1,
AE2, AE3, AE4, WR1, WRA1, and WRLA1 are


trademarks of MaxBotix Inc.

athukoralakasun
02-14-2013, 04:14 AM
Mr Thomas,

Actually you could be a great help for me. Following are my requirement.

1. should be able to use in indoor environment. (to detect both static (walls, chairs, tables etc.) and dynamic (moving people) objects)
2. 1 cm accuracy is enough.
3. Range should be more than 4m.
4. Beam width should narrow as possible in order to reduce sonar noise.
5. sensors will be mounted on to a robot. (maximum speed of the robot would be approximately 1ms-1)
6. Output data protocol is not very significant. (preferred I2C or pulse width)

Could you suggest me a suitable MaxBotix sonar for the above requirements?

And also I'm hoping to buy about 20 sensors. i would like to get an idea of the price as well.

02-15-2013, 11:08 AM
Hello,

Thank you for the reply I am glad to assist you with your questions.

The I2CXL-MaxSonar-EZ4 MB1242 (http://maxbotix.com/Ultrasonic_Sensors/MB1242.htm) has the narrowest beam pattern to detect large objects from 0 cm - 765 cm (25.1 feet and provide sonar range information from 20 cm out to 765 cm with 1 cm resolution with extreme noise tolerance. However this sensor will not detect people past the one inch beam pattern or at a long distance. The I2CXL-MaxSonar-EZ2 -MB1222 (http://maxbotix.com/Ultrasonic_Sensors/MB1222.htm) is a slightly wider beam pattern that will detect people at a longer range as can be seen in the 1" beam pattern.

You can review the sensors and pricing at the links provided above for your convenience.

Please let me know if you have any questions.

Best regards,


Tom Bonar
Technical Support
of MaxBotix Inc.
Phone: (218) 454-0766
Fax: (218) 454-0768
Email: [email protected]
Web: www.maxbotix.com (http://www.maxbotix.com)
Follow us on Facebook at: http://www.facebook.com/pages/MaxBotix-Inc/125159384204938


Technical support and sales are subject to
the terms and conditions listed on our
website at http://www.maxbotix.com/MaxBotix,
MaxSonar,EZ0, EZ1, EZ2, EZ3, EZ4, AE0, AE1,
AE2, AE3, AE4, WR1, WRA1, and WRLA1 are
trademarks of MaxBotix Inc.

Alan brad
09-05-2013, 06:18 AM
For which purpose you are going to buy this sensor? can you say clearly?