MSP430FR6047: bubble detection

chandrasekaran V

Part Number: MSP430FR6047

Tool/software:

hi,

when i run this demo software "MSP430FR6047EVM_USS_Water_Demo", in debugger mode, the API "code = USS_runAlgorithmsFixedPoint(&gUssSWConfig,&algResFixed);" returns the error code as below

when water flows, code=122
if air bubbles are injected it, code = 138, i assume that it could be used for bubble detection, in debugger mode, i am unable to step into the API "code = USS_runAlgorithmsFixedPoint(&gUssSWConfig,&algResFixed);",
so i am unable to come in to a clarity that how this error code is returned
why i can't step into the API "code = USS_runAlgorithmsFixedPoint(&gUssSWConfig,&algResFixed);",

23 days ago

0 Cash Hao11 22 days ago

TI__Mastermind 46545 points

Hi,

122 means valid result.

138 is not used for bubble detection. It only means there is a correlation threshold error in dTOF calculation. It reflects the current correlation has a significant different from the last measurement. So, it returns this error. Air bubble could cause this error, but this error can be triggered by other abnormal situation. USS_runAlgorithmsFixedPoint is inside the USS library. It is not an open source code, so you could not step into it.

Best regards,

Cash Hao

0 chandrasekaran V 22 days ago in reply to Cash Hao11

Prodigy 80 points

could you please clarify me that how to detect bubbles, or if you have driver file for bubble detection please share me

0 Cash Hao11 22 days ago in reply to chandrasekaran V

TI__Mastermind 46545 points

Hi,

Well, we do not provide bubble detection function in the USS library. The only thing I can think of is by checking the amplitude of the receive to indicate if there is valid receive signal. Bubble in the pipe could cause the receive signal amplitude goes low. However, there could be other reasons causes the amplitude goes low and make it hard to distinguish whether it is air bubble. We do not have many things to provide on this bubble detection topic.

Best regards,

Cash Hao