Bluetooth® Low Energy Multi-antenna Module HRM1087-010010 Enables Directional Detection Using AoA and Exclusive Hosiden Algorithm
For position measurement indoors where GPS is not available, conventionally a three-point measurement using Received Signal Strength Indication (RSSI) is widely used. As an alternative technology, HOSIDEN has developed a Bluetooth low energy type multi-antenna module that enables directional detection using AoA (Angle of Arrival), released in Bluetooth 5.1.
The module incorporates six antennas, each of which receives radio waves and calculates the angle of arrival based on phase differences using an exclusive Hosiden algorithm. By eliminating erroneous detection due to multipath components and minimizing noise, the antenna array enables stable detection of the communicating party direction whether it is stationary or moving, covering a range of ±75° from the front side of the module.
A UART interface is included to control the module. Using this interface, Bluetooth connection and detection processes can be started or stopped from external host devices.
Product Name and Model Number
[Product Name]
Bluetooth® Low Energy multi-antenna module for AoA
[Model Number]
HRM1087-010010
Evaluation kit:
HRM1087 Master receiver
HRM3012 Slave transmitter (with battery box)
Demonstration application for Windows10
Principal Features
Detects the direction of the connected party
Improved accuracy in direction detection due to proprietary hardware and software design
Control from external host devices is available using UART commands
Application
Indoor position measurements (for monitoring, life log recording, warehouse management)
Electronic lock (hands-free keys)
Smart key receivers
Main Specifications
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