Open Source LTE to BLE 5.3 Medical IoT Gateway

BLG840FB4 is an open source, secure, LTE to Bluetooth 5.3 medical IoT gateway. Its low cost and medical specific features will enable mass deployment in remote patient monitoring.

Gateway Summaries

Features for Remote Patient Monitoring

• The integrated modem supports both LTE-M and NB-IoT and can operate globally removing any need for regional variants. 

• The LTE antenna ANT032 has an P822601, globally certified with nRF9160.

• Flash memory to store patient data locally.

• A buzzer for audio alerting signal.

• A button to disable the audio alerting signal.

• Basic medical gateway with an nRF52840 module, BT840F.

• Edge computing medical gateway with an nRF5340 module, BT40F. Dual core Cortex M33, up to 128 MHz.

A block diagram of BLG840F.

BLG840FB4

• nRF9160 SiCA supporting both LTE-M and NB-IoT.

• BT840F, an nRF52840 BLE 5.3 module with an integrated antenna.

• Panel-mounted SMA connector and an external LTE antenna, ANT032.

• 4MB flash memory for local storage

• A buzzer to alert user and a button to disable the buzzer

• $63.98 each at 1K pcs.

BLG840FB16

• nRF9160 SiCA supporting both LTE-M and NB-IoT.

• BT840F, an nRF52840 BLE 5.3 module with an integrated antenna.

• Panel-mounted SMA connector and an external LTE antenna, ANT032.

• 16MB flash memory for local storage

• A buzzer to alert user and a button to disable the buzzer

• $65.98 each at 1K pcs.

BLG40FB16

• nRF9160 SiCA supporting both LTE-M and NB-IoT.

• BT40F, an nRF5340 BLE 5.2 module with an integrated antenna.

• Dualcore Cortex M33, up to 128 MHz.

• Panel-mounted SMA connector and an external LTE antenna, ANT032.

• 16MB flash memory for local storage

• A buzzer to alert user and a button to disable the buzzer

• $70.53 each at 1K pcs.

Using LTE to Connect to a Cloud Server

Development Server

A set of demonstration codes for a BLE 5 sensor sending temperature and humidity data to a BLG840F connected to a Fanstel development server using MQTT protocols can be downloaded from Download OpenSource Document webpage. 

The purpose of development server is to assist developers in early stage of development to trouble-shoot WiFi connection. To avoid overloading, gateways should be connected to a production server as soon as possible.

An Android phone app displaying temperature and humidity as below can be downloaded from the same webpage.

Google IoT Core Cloud Server

Hex and source codes to connect to  Google IoT Core cloud server can be downloaded from Download Open Source Document webpage.

Relaying Messages between Cloud and Bluetooth Devices

A Nordic nRF52 module communicates with cloud server in the message layers. nRF52 development environment shall be used for code development. Source codes are available.

The 64 MHz Cortex M4F MCU in nRF52 relays messages between a cloud server and any node in the mesh network. A CryptoCell 310 co-processor is embedded in BT840 Series modules. Secured messages can be decrypted and authenticated when relayed between a cloud server and Bluetooth SIG mesh.

Bootloader is preloaded in Bluetooth module. SoftDevice and application can be loaded by Over-The-Air firmware update. The 10-pin cable included in PK-BLG840F can be used to connect to nRF52DK for programming.

Programming Kits

• PK-BLG840F is required for monitoring UART data. The 10-pins cable is required for connecting to nRF9160DK or nRF5340DK.

Certifications

FCC ID: 2ANPO00NRF9160; X8WBT840F or X8WBT40F.

ISED ID: 24529-NRF9160; 4100A-BT840F or 4100A-BT40F.

QDID: 108621, 119517, 182626.

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