With this CDTI-funded project, the VISUALTIS team aims to create an alternative to RTLS products based on popular technologies such as RFID, IR, ultrasound or WiFi networks.

The company proposes to create a solution based on Bluetooth Low Energy 5.1 technology, measuring little exploited variables and with advanced calculation modules and Artificial Intelligence, for a real-time location of hospital assets, which counteracts the technical difficulties presented by such a complex environment as the interior of a hospital.

HAILS enables high-precision localization of low-cost devices. It uses an array of 6 antennas to calculate the angle of arrival of BLE packets with CTE enabled. This data allows fine-tuning of the positioning compared to classical BLE localization systems using trilateration. It is able to locate the BLE data packets, compared to architectures that only locate the advertisement packets, which allows much better time resolution.

BLE Direction Finding techniques achieve positional accuracy comparable to UWB (Ultra Wide Band) systems, with lower power consumption and cost.

The medium to long term goal is to adapt connectionless technology to this service to, among many other benefits, extend the life of the batteries used in the devices.

System architecture