Design Win

Bluetooth Low Energy 5.0 enabled environment and motion sensing solution

Solution Description

This ultra-low power sensor node features the BlueNRG-2 Bluetooth Low Energy system-on-chip and a suite of ultra-low-power ST sensors, including a magnetometer, gyroscope, accelerometer, pressure, temperature and humidity, MEMS microphone and time-of-flight sensor. It is an ideal solution for applications ranging from smart home to smart agriculture, supply chain management, asset tracking and other industrial applications.

The BlueNRG-2 BLE SoC monitors environmental pressure, humidity and temperature sensor data, as well as motion data from the accelerator, gyroscope and magnetometer, which can be processed by firmware on the Cortex M0 core to provide functionality such as event detection and even object tracking in 3D space through powerful MEMS sensor fusion algorithms.

The Soc can also transmit obstacle distance information from the embedded time-of-flight sensor data.

The MEMS microphone allows audio and music transmission over Bluetooth low energy with appropriate firmware running on the core.

The ultra-low power features of each device and BLE connectivity allow a completely wireless node powered by a standard CR2032 coin battery, with the possibility of joining many nodes in extended BLE mesh networks.

The solution includes comprehensive firmware with ready-to-use examples, and a BLEsensor app for Android and iOS mobile devices completes the package with data visualization and node control functionality.

  • Key Product Benefits

    BlueNRG-2 SoC

    This very low power Bluetooth low energy (BLE) single-mode system-on-chip allows highly compact battery-powered node designs in compliance with Bluetooth 5.0 networking specifications, based on  a Cortex M0 core able to support large network topology, such as mesh networks and real-time elaboration of sensor data.

    BALF-NRG-02D3 blaun


    The matching impedance of this ultra-miniature balun and harmonic filter is designed for the ST BlueNRG transceiver and manufactured for optimal RF performance.

    HTS221 humidity sensor


    This high accuracy sensor gathers humidity and temperature data for asset tracking applications and allows critical threshold values to be monitored, which is especially important in applications such as cold chain shipments.

    LPS22HB pressure sensor


    This ultra-compact piezo-resistive absolute pressure sensor functions as a digital output barometer in the 260-1260 hPa range, and is able to detect events such as plane take off and landing.

    LSM6DSO inertial module


    This ultra-low power and high accuracy iNEMO 6DoF inertial module provides critical motion data for tracking objects and detecting events. Sensor fusion algorithms can combine data from several sensors to deliver complex and high value monitoring information.

    LIS2MDL magnetometer


    This digital output, 50 gauss magnetic field dynamic range, ultra-low power, high performance 3-axis magnetometer provides direction vectors for tracking moving objects.

    VL53L1X proximity detector


    This long-range time-of-flight sensor based on ST FlightSense technology allow the node to provide proximity information related to objects and obstacles around the node.

    STLQ015 linear regulator


    This low drop linear regulator delivers a highly stable voltage to the node devices from the CR2032 coin battery power source.

  • All Features

    • System on Chip Solution based, using the same cortex M0 is possible acquire the sensors parameters, elaborate and send it through Bluetooth low energy connectivity.
    • High levels of device integration, miniaturization and ultra-low power consumption render the nodes compact and portable with extended battery lifetime.
    • High sensor accuracy
      • MEMS environmental and motion sensors provide highly accurate data for asset tracking scenarios such as cold chain applications
      • Humidity accuracy: ±3.5%RH and temperature accuracy with 0.5%
    • Flexibility to change duty cycle and sensor parameters stored in the memory, and threshold settings to wake-up the system using an appropriate app on an BLE-enabled mobile device.