u-blox is introducing a series of automotive-grade positioning modules that are operational up to 105 °C. The NEO-M9L m...
u-blox has specified Nordic’s nRF52833 Bluetooth Low Energy (Bluetooth LE) System-on-Chip (SoC) to power its NINA-B4 stand-alone Bluetooth 5...
Global navigation satellite system (GNSS) technology has solved the problem of locating people or assets outdoors. Meanwhile, no technology has yet managed to achieve widespread adoption for localizing people or assets in indoor environments such as warehouses. Recognizing the growing demand for more accurate indoor positioning solutions, the Bluetooth SIG released Bluetooth direction finding, offering a major improvement over previous RSSI (receiver signal strength indicator)-based solutions.
Bluetooth direction finding makes it possible to determine the direction that radio signals travel from a mobile tag to one or several fixed anchor points. Using angle-of-arrival (AoA) technology, anchor points comprising an antenna array that is connected to a Bluetooth receiver can detect the direction, or angle, to the mobile tag, which transmits a Bluetooth signal. When a constellation of such multi-antenna anchors is deployed, AoA technology can be used to triangulate the precise location of a mobile device or tag.
The u-blox XPLR-AOA-1 and XPLR-AOA-2 explorer kits showcase one of the first complete Bluetooth-based tracking solutions – from the tag to the cloud – to reliably offer sub-meter-level accuracy in indoor environments.
• Comprising a u-blox C211 antenna board and a u-blox C209 tag, as well as the necessary software, the u-blox XPLR-AOA-1 offers all the required components to evaluate AoA technology. Applications include detecting whether a person or an object is approaching a door, avoiding collisions between moving objects, and directing a camera at a moving tag.
• The u-blox XPLR-AOA-2 demonstrates the u-blox high precision indoor position proof of concept built around Bluetooth direction finding. The kit comprises four u-blox C211 antenna boards, four u-blox C209 tags, and all the software required to leverage AoA technology for diverse applications.
Both explorer kits use the u-blox NINA-B4 Bluetooth 5.1 low energy module featuring Nordic Semiconductor’s nRF52833 Bluetooth® Low Energy System-on-Chip (SoC). Running on the SoC’s embedded MCU, u-blox u-connectLocate software calculates the angles of the incoming signals with no additional processing required. In the case of the XPLR-AOA-2, a positioning engine software is included to triangulate the position of the tag.
To provide a great experience for the end-user, u-blox is partnering with Traxmate, whose enterprise asset tracking platform is supported by XPLR-AOA-2. This solution offers a hardware-agnostic, cloud-based tracking system that makes it easier to set up the tracking environment, create buildings, upload floor plans, and specify the placement of the anchor points. Users can use their offering to track the location of assets in real-time via the web or a dedicated smartphone app.
“We see huge potential for global Bluetooth ecosystem to finally deliver a low power, high precision solution for locating people and things indoors,” says Erik Carlberg, Senior Product Manager, Product Center Short Range, at u-blox. “We look forward to engaging with early adopters of the technology and fine-tuning our solution, expanding the positioning expertise of u-blox into the indoor environment.”
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