Platform

CR-1: proximity sensing built into every layer of motion.

The CR-1 is a floor-level mobile robot designed to operate inside live retail and logistics aisles without exclusion zones. Payload capacity, sensor coverage, and motion response time are sized for the specific demands of mixed-traffic shared-aisle operation.

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Close-up of CR-1 robot chassis showing sensor modules at operating height

Specifications

CR-1 technical specifications

Numbers for operators planning aisle coverage, not marketing averages. All figures measured in controlled test environments that replicate live logistics-facility conditions.

Parameter Value
Platform classAutonomous mobile robot (AMR), differential drive
Chassis dimensions620 mm (L) x 480 mm (W) x 540 mm (H)
Payload capacity80 kg (operating load on integrated shelf)
Operating speed0.8 m/s standard, 0.4 m/s in proximity mode
Obstacle response time80 ms median (proximity-triggered deceleration to full stop)
Floor-contact trigger latency40 ms (force-threshold to deceleration command)
Ultrasonic proximity range0.15 m to 3 m, 360-degree ring (8 sensors, 50 Hz update)
Depth camera coverageForward 100-degree field, 0.3 m to 6 m range, 30 fps
Floor-contact sensor array4 pressure pads integrated into wheel base, 16-bit resolution
Onboard computeARM-based SoC, 8-core, 16 GB RAM, dedicated motion-planning accelerator
Battery runtime8 hours at standard load (operating cycle); hot-swap battery supported
Charging methodAutonomous dock charging; external charge port
ConnectivityWi-Fi 6 (802.11ax), optional 4G LTE module
Fleet APIMQTT v5 + REST, JSON payloads, TLS 1.3
Map formatOn-device SLAM; imports PNG/SVG floor plan overlays
Aisle clearance minimum900 mm clear width (1200 mm recommended for bidirectional)
Floor surfaceSmooth concrete, epoxy-coated concrete, sealed tile
Operating temperature5 C to 40 C
IP ratingIP 42 (dust and splash protection)
Weight68 kg (without payload)

Sensing architecture

Three independent layers. One fused decision.

Each sensing layer addresses a specific failure mode. No single sensor handles every aisle scenario; the three layers cover each other's blind spots so the motion planner always has reliable spatial information.

Ultrasonic proximity ring

Eight ultrasonic transducers mounted around the chassis perimeter detect moving bodies from 0.15 m to 3 m at 50 Hz. The ring provides 360-degree coverage, catching approach vectors that a forward-facing camera misses, including lateral and rear approaches in crowded pick areas.

Depth camera zone

A structured-light depth camera builds a dense occupancy grid of the aisle ahead at 30 fps. Resolves foot and lower-leg positions with 15 mm accuracy at 2 m distance, distinguishing a picker's stationary feet from mid-stride movement to plan appropriate deceleration curves before contact range.

Floor-contact force feedback

Four pressure-sensing pads in the wheel base detect unexpected contact forces: a dropped bag, a crouching child, a pallet foot that wasn't on the map. When force exceeds threshold (calibrated per floor surface), deceleration triggers within 40 ms independent of camera and ultrasonic state, providing a final-layer backstop.

Integration

Plugs into your WMS. No lane reconfiguration.

The CR-1 fleet API uses standard protocols already present in most warehouse management and control systems. You dispatch tasks the same way you would to any other automated handling device. The robot figures out aisle navigation; your WMS keeps managing inventory logic.

MQTT v5 topic subscriptions
Task dispatch, position updates, and fleet status use distinct MQTT topics. Your WCS subscribes to status feeds and publishes task commands using the same broker it already operates.
REST API for WMS task dispatch
HTTP endpoints for task creation, fleet query, and map management. JSON payloads, bearer token auth, TLS 1.3. Compatible with SAP EWM, Blue Yonder, and custom WMS via webhook.
No floor modification required
CR-1 uses on-device SLAM and imports your existing floor plan as an image or SVG overlay. No QR codes, no magnetic strips, no floor tape to lay down before deployment day.
Fleet dashboard portal
Web-based fleet ops portal shows live robot positions, task queues, and proximity-event logs. Role-based access for floor supervisors and operations managers. Log in at closer-r.org/login.
task-dispatch.json 
// MQTT topic: crb/fleet/{fleet_id}/task/create
{
  "task_id": "t-2026-04-28-0042",
  "robot_id": "cr1-fukuoka-03",
  "type": "transport",
  "origin": {
    "zone": "aisle-B4",
    "slot": "B4-12"
  },
  "destination": {
    "zone": "dispatch-bay-2",
    "slot": "bay2-out"
  },
  "priority": 2,
  "prox_mode": "standard"
}

// Status callback: crb/fleet/{fleet_id}/robot/{robot_id}/status
{
  "task_id": "t-2026-04-28-0042",
  "state": "proximity_adjust",
  "position": { "x": 14.2, "y": 8.7 },
  "speed_ms": 0.38,
  "prox_event": "lateral_approach",
  "ts": 1745823042
}

Next step

Request the technical datasheet

The full datasheet includes CAD dimensions, sensor calibration data, power consumption profiles, and the complete API reference. Available to qualified facilities teams and systems integrators.

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