calibration of voltage

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
Anonymous
Not applicable

 hi to all,

   

              In  the design of blood glucose meter , the current from test strip is modified to voltages using TIA , but after that how to calibrate that voltages interms of Glucose concentration?

0 Likes
1 Solution
9 Replies
Anonymous
Not applicable
0 Likes
ETRO_SSN583
Level 9
Level 9
250 likes received 100 sign-ins 5 likes given

Not being an expert in this field, but don't the test strip manufacturers

   

have a datasheet for the sensor characteristics ? Which would lead

   

you to concentration calculations ?

   

 

   

Regards, Dana.

ETRO_SSN583
Level 9
Level 9
250 likes received 100 sign-ins 5 likes given

This might help -

   

 

   

      http://electrochem.cwru.edu/encycl/art-g01-glucose.htm

   

 

   

Regards, Dana.

Anonymous
Not applicable

 As dana mentioned, you should get the data form the company making the strip as each company's sensing method would be different.

Bob_Marlowe
Level 10
Level 10
First like given 50 questions asked 10 questions asked

There are normalized glocose test-liquids to calibrate those equipments.

   

 

   

Bob

ETRO_SSN583
Level 9
Level 9
250 likes received 100 sign-ins 5 likes given

There are test strips for that purpose, with known concentrations

   

on them.

   

 

   

http://www.americandiabeteswholesale.com/catalog/diabetic-test-strips_54.htm

   

 

   

Regards, Dana.

Bob_Marlowe
Level 10
Level 10
First like given 50 questions asked 10 questions asked

Another challenge:

   

Often the strips are bar-code-marked to have them calibrated (or date-checked). The code is red off and acted on accordingly.

   

Within my glucose-meter (Accucheck) is a bar-code reader integrated that reads off the barcode from the strip-container which is a small drum containing 17 strips that is inserted into the meter.

   

 

   

Bob

Anonymous
Not applicable

If you are looking for calibrating the internal TIA/signal chain, then take a look at this Application Note - AN68403 (http://www.cypress.com/?rID=50320)

Bob_Marlowe
Level 10
Level 10
First like given 50 questions asked 10 questions asked

Another ad! Do we need a confirmation for the first post of a new user?

   

 

   

Bob

0 Likes