VL53L5CX crosstalk when sensor is mounted inside a movable housing
We are testing the best position for a VL53L5CX sensor in our product. We are observing unusual behavior and are not sure how the sensor should be calibrated in this setup.
The sensor is mounted on the wall of a movable square housing and points inward. When the housing is positioned directly above a metal box, it appears that crosstalk affects the measurements in all 64 zones.
We do not have the cover glass installed yet, but we will add it to the final product.
How should the crosstalk calibration be performed in this situation?
The vl53l5cx_plugin_xtalk allows a minimum calibration target distance of 600 mm. Therefore, should we perform the calibration outside the final assembly, using the actual cover glass and a target at 600 mm? Or should the calibration be performed with the sensor in its final mechanical position?
There is another interesting observation: when the housing is positioned directly above the metal box, the crosstalk effect affects all 64 zones. However, when we raise the housing by approximately 2 cm, the crosstalk effect completely disappears, and the measurements return to the same behavior observed when the metal box is not present.
Does this indicate that we should increase the distance between the sensor/housing and the metal box? Or can the crosstalk calibration compensate for this effect while keeping the sensor in the current position?
We would appreciate any guidance on the recommended mechanical setup and calibration procedure for this configuration.
