Security Patrol Robot Product

Overview

A security patrol robot replaces a portion of static guard tours: it drives preset routes around a campus, parking structure, depot, or substation, runs video analytics continuously, and escalates to a human monitoring center when something needs judgment. It does not arrest anyone. Its value is deterrence (a conspicuous, recorded presence), coverage (the same route at 03:00 as at 15:00, in rain), and evidence quality from sensors no human guard carries.

The machine divides into a Drive Base handling mobility, a Sensor Mast holding every sensor as high as practical, and a Body Shell sealing the electronics between them.

Mobility

Outdoor sites mean curbs, gravel, root-heaved asphalt, and grass. Each corner of the Base Frame carries a Drive Module: a gearless Hub Motor — outer Rotor Assembly with 20 Neodymium Magnet poles around a Stator Assembly — inside the wheel itself, with no gearbox to wear or leak. Its Motor Controller runs field-oriented control through six Power MOSFETs and recovers energy braking down ramps. Steering is by speed differencing across the four wheels.

Each wheel hangs on a Suspension Arm with a Coil Spring and hydraulic Suspension Damper. The suspension is less about ride comfort than about the sensors: an undamped mast turns every expansion joint into smeared video and a jittering LiDAR map. The Mast Column adds elastomer isolation on top of that.

Sensing and autonomy

Navigation is LiDAR-first. The LiDAR Unit spins 16 Laser Channel Module channels with a Servo Motor, producing a point cloud matched against a site map built during commissioning; the GNSS Antenna adds RTK-corrected position outdoors where buildings don't block the sky. One Compute SoC Module in the Compute Unit fuses these into localization and obstacle avoidance, while the second runs the video analytics; a separate safety Microcontroller owns the Contact Bumper strips and the two public-facing Emergency Stop buttons, stopping the drive without software in the loop.

Surveillance uses three camera systems with different jobs. The Camera Ring — four Camera Module units with overlapping fields — records continuous 360° context. The Thermal Camera's Microbolometer Core images body heat in total darkness, which is how the robot detects a person in an unlit yard at 100 m, and also flags overheating transformers and smoldering pallets on industrial routes. When analytics or a remote guard wants detail, the PTZ Camera slews onto the target and zooms to read a face or license plate.

Escalation, not enforcement

Detection events follow a ladder. Low-confidence events are logged with a video clip. A person in a restricted zone after hours triggers the Alarm Module: recorded announcements through the Speakers, the Alarm Strobe, and a live feed to the monitoring center, where a guard can talk through the intercom using the Intercom Microphone for two-way audio. Genuine incidents get a human dispatch. All of it streams over the Comms Module — an LTE Modem with four Antenna elements, falling back between LTE and site Wi-Fi as coverage changes along the route. The Status Light Bar keeps the robot's state legible to people nearby; an unmarked dark machine rolling through a parking garage generates its own security calls.

Power and uptime

Patrol economics depend on autonomy of energy, not just of navigation. The 1.3 kWh pack — 120 Li-ion Cell, 18650 cells under a BMS Board in the sealed Battery Case, which doubles as low ballast — gives 8–10 hours of patrol. When charge drops below threshold, the robot routes to the Charging Dock, aligns on the retroreflective Dock Beacons with its LiDAR, and drives onto the Charge Contacts; the dock's 1.5 kW Power Supply restores a full charge in about 90 minutes. A typical deployment is one robot, one dock, and roughly 20 hours of patrol coverage per day with charging gaps scheduled against the site's quiet hours.

Fleet operators report the practical failure modes are mundane: tire wear from curb climbing, lens soiling, and vandalism attempts — hence the tamper-resistant Fastener Set on the shell and the policy of treating every shove or tip event as a recorded incident.