IWR1443: question on using IWR1443boost in my own application

Hello Bill,
As a starting point you can look at the sensing estimator tool (dev.ti.com/mmwaveSensingEstimator) to verify if your required sensing parameters would be met.
By default a max velocity of 300kmph would not be possible , but there are some higher level algorithms that can be used to measure velocity higher than the max unambiguous velocity provided by a radar sensor. You can look for these algorithums online.

Regards,
Vivek

Hi Vivek

This happens when I use the sensing estimator tool to verify if my required sensing parameters would be met. I just give this for an example.

What's the reason to have negative value?

Thanks for your time effort.

Hello Will,
Looks like there is a bug in the tool that its not able to highlight the invalid configuration in this case and is ending up computing a negative value.
Like I mentioned earlier 300km/hr with a 80 m kind of range would not be directly feasible without higher level algorithms. You would have to set a lower max velocity and then use higher level algorithms to compute a velocity that is higher than the max unambiguous velocity. What the tool lists is only the max unambiguous velocity.

Regards,
Vivek

Hello Vivek

I really appreciate your effort to my question. 

Our company is dedicated to develop wind turbine.

Could you give me a solution based on TI mmWave sensor (AWR1243(long distance)?) to trace the point at the end of wind turbine blade(Which is shown in picture below)?

How can I realize my concern by improve your TI mmWave sensor(by changing antenna design? or other  parameters?  )?

Thanks

-Will

Hello Will,
In the above picture I assume the radar would be fixed on the pole while you want to measure the velocity of the tip of the wing, is that correct?
Just a thought, instead of using the Doppler measurement of the radar measure the velocity you could use radar to detect the times the wings cross the center of the pole and then based on the time difference you can compute the velocity. Do you think that would work out? That would reduce the distance of measurement (just the distance between the wing and the pole when both are aligned ) and also remove the constraint of such high velocity measurement.

Regards,
Vivek

Hello Vivek

 

         I am very sorry that I didn’t make myself clear. Your answer on measuring the velocity of the tip of the wing is valuable. However, the tip of the wind would have a deformation (caused by high winds) and lead to an impact on tower (blade rotation , which will destroy the blade).

         What I want to achieve is distance information between tip and the pole instead of velocity of the tip, so I can infer the distance B (between tip and tower, shown in picture below) from the distance A (between tip and the pole).

         I have applied IWR1443BOOST on measuring the distance A but with no signal when putting radar direction on point C. I wonder if RCS of the tip is too small to detect. I really didn’t care about the velocity but if the velocity will affect the distance measurement?

Could you give me some advice on measuring distance B?

 

Regards

-Will

Hello Will,

The velocity would not impact the distance measurement, so you do not have to set the configuration to meet the 300km/hr velocity since you are not trying to measure velocity. But you do need to make sure the measurement rate is fast enough so that you get atleast a few measurements when the wing is crossing the radar point. The measurement rate is governed by the frame periodicity in the configuration file, one frame period could correspond to one measurement time.

I do not know the mechanical challenges in the wind mill but instead of measuring A and then inferring distance B could you place the radar in the below location to measure the distance B directly ? 

Regards,

Vivek