Does the angle of the target create problems with the VL53L4CX sensor?

ctmorrison · ‎2022-07-27

I am considering using the above sensor to detect if a car is in a parking space in a garage. I would plan to mount the sensor ~6' above the floor on the wall at the end of the space. It would be pointing down in a 45˚ angle, which means the center of the FOV would be ~6' horizontally from the wall. Will this angle of viewing the floor be a problem? Obviously, when a vehicle is in the space, the measured distance would be much less. That's the fundamental concept of this detection method.

Anne BIGOT · ‎2022-08-02

There are two types of targets : specular ones (mirror like) and Lambertian (matte finish). In your description, most of the photons will reach the target and bounce away because the target is rather specular. If the car is dirty it will work but you can not count on that.

Consider mounting the sensor lower to the front of the grill (or bumper) you will get a strong return signal.

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