Reinventing cold chain management
Q1 2027 Launch

RTK & IMU-Enabled
Reefer Telematics
System

Reinventing cold chain management with precision spatial positioning and motion analytics. Centimeter-level tracking combined with real-time dynamic sensing prevents collisions and unhook violations. Smart thermal alerts and remote reefer diagnostics minimize cargo loss and spoilage risks. Empowering pharmaceuticals, fresh produce, and high-value cold chain logistics with a trusted digital brain.

Explore Solutions Request NDA Document
cm RTK + NTN ISO 10368 Native 250+ Days Offline IP67 / -40~85°C
Typical Applications

Built on precision, hardened for the cold chain.

From ocean voyages to pharma corridors — the same RTK telematics platform adapts to the operating reality of each cold-chain segment.

Reefer container cold-chain telematics deployment
Ocean Fleets
Deep-Sea & Ocean Cold Chain Tracking

128GB SLC NAND flash buffers 250+ days of offline telemetry; 3GPP Rel. 17 NTN satellite backhaul kicks in when shore LTE-M and NB-IoT drop out at sea.

250+ days offline + NTN satellite backup
Ports & Yards
Smart Ports & Yard Automation

Dual-antenna RTK delivers centimeter-grade position, heading, and orientation — the inputs AGVs, RTG cranes, and gate automation need to dock without human guidance.

cm-grade RTK + heading + orientation
Pharma
Compliant Pharma & High-Value Cargo Transport

Native ISO 10368 RCD support and ATECC608B-signed logs satisfy audit and trial-chain requirements; EU CRA / EN 18031 hardening for high-value cargo.

ISO 10368 RCD + ATECC608B + EN 18031
Intermodal
Intermodal Cross-Border Logistics

9-32V wide-input supply with surge protection rides truck, rail, and reefer-generator transitions; LTE-M, NB-IoT, and satellite hand-off keep one continuous track across borders.

DC 9-32V + LTE-M / NB-IoT / Satellite
Core Value Pillars

Core Value Pillars & Key Highlights

Four pillars turn centimeter-level RTK precision and global connectivity into measurable cold-chain outcomes — from smart yards to deep-sea routes.

MCU
01 · Dual-MCU

Decoupled Dual-MCU Architecture

  • App Core: STM32H743 Cortex-M7 runs sensing, Modbus, NAND logging.
  • Telematics Pipe: nRF9151-A1 isolated for LTE-M/NB-IoT & NTN satellite.
  • Flow Control: RTS/CTS safeguards batch backfill transmission.
RTK
02 · RTK Positioning

Centimeter-Level Precision

  • Overseas: Septentrio Mosaic-X5C, multi-path mitigation.
  • Domestic: UM986 multi-frequency RTK module.
  • EMC Shield: >60dB RF isolation between cellular & RTK.
ISO
03 · Reefer Control

ISO 10368 & Reefer Control

  • RS485 Modbus-RTU: Isolated, reads setpoints & fault codes.
  • Auto 120Ω: Bus impedance matching, plug-and-play.
  • Legacy DO: 2x opto-isolated dry-contact start/stop.
SEC
04 · Logging & Security

250+ Days Offline & Security

  • 128MB SLC NAND: 250+ days temp & trajectory logs offline.
  • ATECC608B: ECDSA X.509 dual-auth & immutable keys.
  • EU CRA: Compliant with Cyber Resilience Act (EN18031).
Hardware Configuration

Complete Hardware Configuration

Production-ready architecture across MCU, positioning, storage, compressor I/O, sensing, watchdog, and power — each subsystem engineered for automotive-grade reliability.

Configuration Model / Specification Function Description
Main MCU STM32H743VIT6 480 MHz Cortex-M7 handles control, logging, security, breakout resume, and OTA.
Cellular Coprocessor nRF9151-A1 LTE-M / NB-IoT / NTN satellite modem; MQTT/TLS pass-through, isolated from MCU.
Main Storage GD5F1GQ4UCYIG 128 MB SLC SPI NAND Logs, RTK tracks, alarms, OTA images; 100k write cycles, -40 to 85 deg C industrial grade.
RTK Positioning UM986 Multi-frequency GPS/BDS/GLONASS; centimeter-level RTK for domestic cold chain.
RTK Positioning Septentrio Mosaic-X5C All-constellation multi-frequency; anti-jamming for EU/US pharma and maritime.
Main Buck DC-DC TPS54340-Q1 Automotive sync buck 3.5-60 V input; converts vehicle DC 9-32 V to 3.3 V system rail.
Isolated RS485 ADM2587E 2500 Vrms isolation; Modbus-RTU and ISO 10368 mappings for reefer status and control.
Digital Output 2-ch Optocoupler DO Open-collector relays for legacy reefer hard start/stop without comms port.
Digital Input 4-ch Optocoupler DI Door contact, condenser high-pressure alarm, and reefer status feedback.
Software

Software Stack

All business logic, security, OTA, and fail-safe behaviour lives on the H743. The nRF9151 stays a transparent pipe.

1
Layered Hardware–Software Architecture
Dual–MCU decoupled design with hardware pass-through mechanism, adapted to harsh offshore working conditions to ensure long-term stable device operation.
2
Robust NAND Storage Engine
Hardware-enabled ECC error correction and bad-block management, secure local caching to fully preserve business data across the entire cold-chain lifecycle.
3
Offline Cache & Resume Transmission
Automatic local buffering during out-of-network status, seamless data resumption after network recovery, achieving zero data loss in maritime signal-free environments.
4
High-precision RTK Positioning Stack
Multi-band centimeter-level RTK module paired with smooth IMU inertial-navigation fallback to deliver high-accuracy asset location tracking.
5
High-accuracy Temperature Acquisition Pipeline
Multi-redundant sampling plus multi-stage filtering algorithms, accurately identifying cargo-bay temperature fluctuations and outputting reliable debounced alerts.
6
Refrigeration-Unit Secure Control Core
Auto-switchable Modbus / DO dual mode, cryptographically signed commands integrated with multi-layer protection and intelligent retry mechanisms.
7
Comprehensive Fail-Safe & Protection
Fast dual-watchdog self-recovery, wide-voltage protection; MQTT-TLS mutual encryption for full-stack security compliance.
8
Built-in Self-Test & Expandability
Rapid power-on self-test with visual status feedback; optional IMU and CAN-bus support, compatible with mainstream refrigeration unit protocols.
Compliance

Quality & Compliance Coverage

EU CRA / EN 18031
Hardware crypto on H743, ATECC608B key isolation, ECDSA OTA signing — pre-aligned for the EU Cyber Resilience Act.
RED / FCC Pre-Scan
Software-locked band and TX power; radiated scan through partner labs — CE / FCC / Anatel / SRRC / TELEC ready.
ISO 7637-2 / 16750-2
Three-stage automotive transient protection — reverse, load-dump (Pulse 5b), and high-frequency injection (3a/3b).
ISO 10368 Mapping
Container number, supply/return temperature, setpoint and manufacturer code forced into every report for global RCD networks.
A/B OTA + ECDSA
Dual-partition upgrade with CRC32 verify, ECDSA P-256 signature via ATECC608B, monotonic anti-rollback version.
RDP Level 2 + PCROP
External Flash read blocked, bootloader and key-manager code isolated; SWD disabled in production with encrypted-UART field diagnostics.

Ready to Upgrade Your Reefer Fleet with Centimeter-Level Precision?

Transform your cold chain operations with industry-leading telematics intelligence. Contact our engineering team today to schedule a demonstration or request a sample evaluation unit.

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