Droid Patrol
Security and inspection robots

What patrol robots do, and what they need from people.

Wheeled and legged patrol robots carry cameras and sensors on a fixed route and report back to a person. They extend a security or maintenance team's reach; they do not replace its judgment. Here is what they carry, where they fit, and where their limits are.

What a patrol robot carries

The robot is a moving sensor platform. What it can notice depends on what it carries.

Cameras

Day and low-light video for live viewing and recording.

Thermal imaging

Heat signatures: people in the dark, overheating equipment, small fires.

Audio

Microphones and a speaker for two-way conversation with a remote operator.

Mapping sensors

Lidar or depth cameras to follow the route and avoid obstacles.

Gauges and meters

On inspection robots, cameras that read dials and sensors that detect leaks or vibration.

Wheels or legs?

Wheeled robots

  • Efficient on pavement and smooth floors
  • Longer battery life
  • Simpler to maintain
  • Struggle with stairs and curbs

Legged robots

  • Climb stairs and step over obstacles
  • Handle gravel, grates and clutter
  • Shorter runtime per charge
  • More complex to maintain

Where they fit

Patrol robots work best on repetitive rounds over large areas, at hours when people are scarce.

SettingTypical task
Parking areas and yardsNight rounds, checking for people and vehicles where they should not be.
Fence linesLong perimeter checks that are tedious for people.
Warehouses after hoursChecking doors, aisles and dock areas.
Substations and plantsThermal and gauge readings on a fixed inspection route.
Data centersRepeated equipment checks and perimeter rounds.

Know the limits

Being honest about limits prevents disappointment and unsafe expectations.

  • A robot can report a problem, but a person still has to respond to it
  • Weather, glare and poor connectivity reduce what it can see and send
  • It follows its route; it does not investigate on its own judgment
  • It needs charging, cleaning and software updates like any other equipment

Recent in patrol and inspection robots

Short summaries of recent reporting, with links to the original articles.

Headlines are quoted as they appear at the source; summaries are our own. Follow the links for the full reporting.