Tamper Detection

SENSR utilizes the inputs from LiDARs, and as such, the quality of LiDAR inputs critically influences the performance of the software.If a LiDAR is obstructed by a flying bird, thick dust, or a malicious intruder blocking it with something like a bucket, it won't be able to send proper inputs to SENSR. As a result, SENSR will lose the Field of View (FOV) from the affected LiDAR and fail to detect objects in that area. This can also jeopardize the normal operation of client systems integrated with SENSR.

To detect such obstructions and enable the user to respond accordingly, SENSR is equipped with a Tamper Detection feature.

Tamper Alarm

Tamper is triggered when a bucket is covered by a specific LiDAR or covered by an object (ex., bird) that came too close. If the LiDAR is tampered with, then user will receive a notification in the GUI and the impacted LiDAR’s health status in the output message will be changed to SENSOR_ERRONEOUS.

In this case, the user should check whether the blockage is happening. If the blockage is happening, the user should remove the blockage. To stop receiving the alarm, the user should go into project mode and move back into runtime mode.

How to set up Tamper Alarm

1. Go to Settings > Algo Node Parameters and select the Algo node that you want to set up the Tamper Alarm.
2. Go to tab, Algorithm Components > Obstruction Detector.
3. Tick Apply for Range Obstruction Detector.
4. (optional) Set the parameters under Range Obstruction Detector to adjust the sensitivity. Parameter information can be found in the table here.