nemi EdgeBase – 4G Edge Computing Gateway with Linux OS for Wireless Sensor Networks
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Description
nemi EdgeBase is a powerful 4G gateway with Linux operating system and edge computing capabilities, designed to connect wireless sensor nodes in the nemi Link 2400 radio network with local and global networks. Acting as the central hub of the nemi® ecosystem, nemi EdgeBase reliably receives measurement data from up to eight wireless sensor nodes and can additionally perform measurements itself using integrated sensors.
The device features integrated MEMS sensors, including a triaxial accelerometer, gyroscope, magnetometer, internal temperature sensor, and GPS, enabling independent measurements of accelerations, rotation rates, magnetic fields, temperature, and position. All acquired data can be stored locally on an industrial SSD (240 or 480 GB) for secure long-term recording.
With its 64-bit Linux platform, powered by a quad-core 1.2 GHz CPU and 1 GB RAM, nemi EdgeBase enables advanced edge analytics using Python scripts. Raw time-series data can be stored and transmitted as compressed binary files, while pre-evaluated “smart data” can be published via MQTT streams, significantly reducing data volumes and cellular transmission costs.
Data transfer is supported via a secure 4G cellular connection as well as wired Ethernet, making nemi EdgeBase ideal for long-term monitoring and predictive maintenance applications. Typical use cases include load monitoring on wind turbines, condition monitoring of rolling bearings, and continuous performance monitoring of roller coasters and dynamic systems.
The gateway is housed in a robust, weatherproof IP65 enclosure with passive cooling and supports continuous 24 V DC operation, ensuring reliable performance in harsh industrial environments. The system architecture and radio technology are developed by i4M.
Specifications
Specifications – nemi EdgeBase
General Information
| Parameter | Value | Unit |
|---|---|---|
| Dimensions (without antenna and connectors) | 164 × 125 × 51 | mm |
| Weight | approx. 800 | g |
| CPU | ARM, 4-core, 1.2 | GHz |
| RAM | 1024 | MB |
| Custom scripting | Python | – |
| SSD hard disk | S240 / S480: 240 / 480 | GB |
| Data transmission | FTP server via VPN, MQTT data streams | – |
| Cellular connection | 4G modem with SIM slot, LTE Cat. 4 (worldwide networks); max. 150 Mbit/s downstream, max. 50 Mbit/s upstream | – |
| External power supply | 24 V DC / 230 V AC via external power supply | – |
| Permitted operating temperature range | -20 to 60 | °C |
| Housing protection class | IP65 | – |
**Additional Integrated 9-DoF IMU
(3-axis MEMS Accelerometer ACC / Gyrometer GYR / Magnetometer MAG)**
| Parameter | Value | Unit |
|---|---|---|
| Sampling rates | 416 / 208 / 104 / 52 | Hz |
| Selectable measuring ranges ACC | ± 16 / 8 / 4 / 2 | g |
| Selectable measuring ranges GYR | ± 4000 / 2000 / 1000 / 500 / 250 / 125 | °/s |
| Selectable measuring ranges MAG | ± 16 / 12 / 8 / 4 | Gauss |
| Signal resolution | 16 | bit |
Temperature Sensor
| Parameter | Value | Unit |
|---|---|---|
| Sampling rate | = 1/12 of the IMU sampling rate (e.g. 35 Hz at 416 Hz) | Hz |
| Measuring range | -20 to 60 | °C |
| Signal resolution | 0.1 | °C |
Satellite Navigation (GNSS)
| Parameter | Value | Unit |
|---|---|---|
| GNSS module | GPS / GLONASS / BeiDou / Galileo | – |
| Sampling rate | max. 10 | Hz |
| Accuracy | 2 | m CEP |