EVM430-FR6043: Measurement of a 1-meter diameter gas pipe using USS solution.

Jungyoul Kim

Part Number: EVM430-FR6043
Other Parts Discussed in Thread: MSP430FR6043

Tool/software:

I have developed a prototype using the gas sensing solution with the MSP430FR6043.

Your USS solution has worked well in our application.

Now, I am planning to develop a product that measures a 1-meter gas pipe. Before proceeding, I would like to ask if you have experience measuring a 1-meter gas pipe using your USS solution.

Additionally, I am currently using one ultrasonic sensor for TX and one for RX. However, I plan to expand this to three sensors. To achieve this with a single MSP430FR6043 MCU, I am considering two approaches:

Using an external analog switch to select one of the three ultrasonic sensors.
Using three MSP430FR6043 MCUs and adding a higher-level MCU for control.

I would appreciate your advice on the feasibility and best approach for this implementation.

Looking forward to your response.

2 months ago

0 Cash Hao11 2 months ago

TI__Mastermind 40295 points

Hi,

I would recommend you to try with the second approach for your application.

And for this 1 meter gas pipe, do you mean the distance between transducers would 1 meter?

Best regards,

Cash Hao

0 Jungyoul Kim 2 months ago in reply to Cash Hao11

Prodigy 10 points

First of all, thank you for your help.

We are aiming for a distance of 1 meter between transducers.
However, if the sensors are configured in a reflective manner, the distance could exceed 2 meters.
In this case, would it still be possible to perform sensing using TI's USS solution?

0 Cash Hao11 2 months ago in reply to Jungyoul Kim

TI__Mastermind 40295 points

Hi,

Well, the difficult part is how to receive valid signal and get it captured by ADC. A distance of 1 meter will attenuate a lot of the energy of the sound wave. And make it very hard to receive. You need to think of some method to receive the signal first. Something like using a higher excitation voltage.

Best regards,

Cash Hao

0 Jungyoul Kim 2 months ago in reply to Cash Hao11

Prodigy 10 points

Hi!

We have the following setup for our ultrasonic sensors: the distance between the transducers is approximately 1.4 meters, and we are installing three sets of ultrasonic sensors with TX and RX facing each other at an inclined angle.

Currently, we are dealing with two main issues:

To receive valid signals, we are planning to add a voltage booster circuit in front of the ultrasonic sensor, as you mentioned. Do you have any reference circuits related to ultrasonic sensor voltage boosters from Texas Instruments (TI)?
We would like to compensate for temperature changes in the water. Could you recommend a suitable compensation algorithm and a temperature sensor for this purpose?

Lastly, are there any changes required in the USS library concerning these issues?

Thank you for your time and assistance. I look forward to hearing from you.

0 Cash Hao11 2 months ago in reply to Jungyoul Kim

TI__Mastermind 40295 points

Hi,

You are saying it is a gas meter. But what is 'compensate for temperature changes in the water' means in a gas meter?

1. There is one reference for water meter application. But it is not used on a mature design. You can refer to this post. (+) EVM430-FR6047: Cannot get the TIDA-01486 amplifier board working - MSP low-power microcontroller forum - MSP low-power microcontrollers - TI E2E support forums

2. We do not have a suitable compensation algorithm for temperature.

I am not sure if it requires changes on the library since I do not have experience on this kind of large pipes.

Best regards,

Cash Hao

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