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Tool/software:
We are using TIDA-010050 to create a water meter monitoring device. We incorporated TIDA-010050 design into our own design, and created a monitoring device. We are testing the TIDA part now.
Test setup:
Texas chip from the reference design TIDA-010050 with Sensor Controller Studio software. Water meter is equipped with custom enclosure to hold our device on the flag.
My questions are the following:
Hi Daniel,
please, see answers below:
TI: Yes, you can adjust REFDAC_OFFSET to find the optimal point for the detection.
TI: Yes, calibration is a process that should be done in manufacturing, so you need to have the water meter start before the Software. The Calibration procedure assumes water flow is running as it is in the Initialization portion, which means it only runs once, while Event Handler A code runs periodically depending on the Event Trigger.
So if you start the SW first, the calibration code will run on 0 or Non-flow condition and would fail.
TI: What is the function that the 3rd coil should have? Please, advise so we can make a proposal.
BR
Milen
Dear Milen,
We have measured REFDAC offset vairations from 5 - 11 and it seems to have a weak interference in the sensing, however we can see the effect. How can we extend the sensing limit range either with bigger power or selected components? Is it possible? We are on the edge of sensing, and we would like to have an extra 1-2 mm to be confident.
Did you try with other coils other than Gemphil? What are the results?
Which is better in your opinion, an external coil like gemphil or the one embedded in the eval board in 4 layer?
The third coil would extend reliability, range in my opinion. Or would it overcomplicate the state machine?
Thank you!
BR
Daniel