how can i adjust the PW-0268 ultrasonic sonar ranging IC frequency system ?

3 Mar 2017

hello everyone;

i'm working now the PW-0268 ultrasonic sonar ranging IC and i want to augment the range of detection by changing the value of the R4 and C2 so that i can work with a frequency system equal to 60 Khz but i don't know how i can do that so can someone help me and explain how i can adjust the frequency?

N.B : in the data sheet the said it can reach the 18 meters

sorry for my english.

Top Comments

dougw over 8 years ago in reply to bouazzaouisamir

Some Maxbotix sensors can reach 10m - if you can afford them.
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bouazzaouisamir over 8 years ago in reply to dougw

i will try it tanks douglas.
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bouazzaouisamir over 8 years ago in reply to bouazzaouisamir

and the max range we want to achieve is 10m
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bouazzaouisamir over 8 years ago in reply to michaelkellett

thanks michaelkellett;
if u read the data sheet u can find that all the parameter are depend on the frequncy clock system.
however , i'm using the SRM400 is a sonar ranging module that use 400EP14D transducer and the max range is 150 cm.
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michaelkellett over 8 years ago

Why do you think that increasing the frequency will increase the range ?

On the data sheet it asks you to contact the chip manufacturer for an 18m capable design which suggests that the standard circuit won't do.

What range are you achieving now and what transducer(s) are you using ?

MK
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