VL53L1X Issue

[Yuti Amonkar]

Posted on June 28, 2018 at 09:00

Hi

I am facing issue while taking multiple readings for averaging in the VL53L1X sensor.Our sensor is interfaced with B-L072Z-LRWAN1.We are not getting consitent reading as shown below:

2486

2490

2489

2490

2487

2488

2490

Above 200 CM some readings are very different so averaging doesnt seem to help. Is there any configuration done for the sensor?

#b-l072z-lrwan1 #stm32l-i2c #vl53l1x

[Bogdan Golab]

Posted on June 28, 2018 at 09:14

I just started doing a kind of LIDAR for a simple robot using VL53L0X (the previous version of the sensor with shorted supported distance) and tested the

https://www.st.com/en/ecosystems/p-nucleo-53l0a1.html

Before I decided to use this sensor I read this document (chapter 4) where the author collected some interesting data about the previous VL53L0X. This might be useful to see the accuracy of the sensor in different circuimstances (ambient light impact):

https://upcommons.upc.edu/bitstream/handle/2117/117780/Thesis.pdf?sequence=1&isAllowed=y

 

Maybe you find this interesting as a reference point...

[Yuti Amonkar]

Posted on June 28, 2018 at 10:55

Hi

So the VL53 series doesnt work for the farther ranges ? We are testing in ambient light conditions indoor.

[Bogdan Golab]

Posted on June 28, 2018 at 11:45

I did not say that. I simply looked into the data provide by the guy doing this test. Since my use case is below 1m I am fine with the sensor performance / accuracy.

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Indoor ambient light seems to be good environment comparing to the sunlight - probably the light source matter e.g. halogen bulbs.

Try to test different light sources to capture the one with interfering / impacting wave length and consequently the sensor accuracy.

I would consider the mentioned document as a starting point. I think you need deep it deeper, maybe with help of someone from ST.