scope:

This document proposes a standard test procedure, in order to assess the efficiency of cleaning systems for sensors. It addresses the following conditions:

- Dust / Mud

- Frost / Snow

- Mist / Rain

There is no preferred cleaning system described as this document is intended to be technologically neutral and performance oriented for the cleaning system and not for the sensor detection. For this reason, the assessment method is fully independent from the sensor technology and from the data generated by the sensor itself during use.

The scope is entirely focused on the cleanliness of the front sensor surface, as shown on Figure 1.

This document does not address continuous contamination, such as continuous rain, as the efficiency of the cleaning system could only be assessed from the interior of the sensor in those situations.

For a non-continuous contamination, this document includes intermittent cleaning considered as a succession of periodically launched cleaning cycles as defined in 3.2.

This document does not include specific day/night time conditions during the test as they have no impact on the results and the mean of cleaning remains similar. However, a better cleaning efficiency may be sought for the night.

This document does not include contamination with insects due to the difficulty to get a homogeneous application.

The cleaning system efficiency must be related to the tested sensor.

This document does not provide any direct indicator co-related to the sensor performance but limited to the evaluation in terms of apparent visual removal of the contaminant in terms of superficial coverage.

This document does not include evaluation on the preventive countermeasure taken from its installation design point of view. Aerodynamic design affect how mud sprayed out from running vehicle or rain droplet could reach and build-up onto sensor frontal protection layer. Countermeasure design is out of scope of this document.