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Indoor Real-Time Location System (UWB & BLE RTLS)
Pure Engineering develops indoor Real-Time Location Systems (RTLS) using IEEE 802.15.4 Ultra-Wideband (UWB) Time-of-Flight (ToF) and Time-Difference-of-Arrival (TDoA) ranging alongside Bluetooth Low Energy (BLE). The system tracks assets and personnel to 10 cm indoor accuracy without GPS and streams coordinates over MQTT and REST APIs.
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28-Year Portfolio
http://www.purelocate.com ↗
https://state.palmexus.com:8880/unit ↗
Architecture & Technical Specifications
Hardware Architecture & Features
- UWB Anchor & Wi-Fi Bridge: Fixed reference nodes with self-locating calibration, BLE scanning, and mesh backhaul.
- UWB Tag: Coin-cell or rechargeable asset and personnel tags with 1+ year battery life and MEMS motion wake-up.
- UWB Base Station: Combines UWB ranging, BLE scanning, USB host bridging, and a 4 m narrow-FOV doorway people counter.
- Supports 30 m anchor-to-tag range with automatic conversion to WGS84 coordinates once 3 fixed anchors are set.
Firmware, Software & Integration
- Location Server archives high-resolution trajectories and zone entry/exit timestamps.
- Calibrates indoor BLE RSSI fingerprinting automatically against ground-truth UWB Time-of-Flight fixes.
- Exposes webhook, REST, and MQTT feeds plus fleet OTA firmware management.
Hardware Photos & Figures (5)
