nemi DAQ nano – Tiny Wireless DAQ Multi-Sensor with Energy Harvesting for Strain, Force and Displacement Measurement
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€0.00
Description
nemi DAQ nano is a tiny, board-level wireless data acquisition (DAQ) multi-sensor module designed for advanced measurement and monitoring of strains, forces, loads, displacements (e.g. crack monitoring), temperatures, and many additional physical quantities. It is i4M’s first fully integrated wireless sensing solution in the DAQ segment and a key member of the nemi® Wireless Measurement Family.
Despite its extremely small size, nemi DAQ nano offers a wide range of analog and digital sensor interfaces, including strain gauge full bridges (Wheatstone), force and displacement sensors, thermocouples (e.g. Type K), Pt100 / Pt1000 temperature sensors, potentiometers, 0–10 V sensors, and digital sensors. A high-resolution 24-bit ADC with integrated signal amplifier ensures low noise and high measurement accuracy even in demanding applications.
In addition to external sensors, nemi DAQ nano integrates a 9-DoF IMU consisting of a triaxial accelerometer, gyroscope, and magnetometer, enabling the measurement of accelerations, rotation rates, rotation angles, and magnetic fields. This makes the device ideally suited for dynamic measurements on rotating or moving components, such as torque and torsion measurements in drive trains.
Thanks to the highly efficient nemi Link 2400 radio technology, nemi DAQ nano achieves very long battery runtimes. With optional solar energy harvesting and MPPT, operating time can be extended significantly and, under favorable conditions, the sensor can even operate energy self-sufficiently.
Its ultra-compact and lightweight design allows seamless integration into the smallest installation spaces, transforming conventional components and machines into smart, connected products without costly custom development. Compatibility with nemi receivers, loggers, and gateways enables fast and cost-efficient implementation of complete wireless measurement systems.
Specifications
Specifications – nemi DAQ nano
General Information
| Parameter | Value | Unit |
|---|---|---|
| Dimensions (without connectors) | 30 × 30 × 12 (30 × 30 × 4.2) | mm |
| Weight (with connectors) | Option E1: 6.3 / Option E2: 5.3 | g |
| Power supply | 5 (Micro USB) | V |
| Option E1: connectors for battery (with charger), solar panel, battery backup | – | |
| Option E2: 5–30 DC input | V | |
| Permitted operating temperature range | -25 to 85 | °C |
| Onboard MCU (usable for edge computing) | 64 MHz ARM Cortex-M4F, 1 MB Flash, 256 KB RAM; various hardware crypto features | – |
| Housing protection class | Without housing | – |
Main Sensor Device – MEMS Accelerometer
| Parameter | Value | Unit |
|---|---|---|
| Selectable sampling rates | 4000 / 2000 / 1000 / 500 / 250 / 125 | Hz |
| Sampling rate stability (over entire temperature range) | ± 50 | ppm |
| Realizable signal bandwidths (-3 dB) | 800 / 500 / 250 / 125 / 62.5 / 31.25 | Hz |
| Selectable measuring ranges – Variant 08 | ± 8 / 4 / 2 | g |
| Selectable measuring ranges – Variant 40 | ± 40 / 20 / 10 | g |
| Sensor resonance frequency – Variant 08 | 2400 | Hz |
| Sensor resonance frequency – Variant 40 | 5500 | Hz |
| Signal resolution | 20 | bit |
| Non-linearity (related to measuring range) | 0.1 | % |
| Cross-sensitivity | 1.0 | % |
| Inaccuracy (related to measuring range), without calibration | < 8 | % |
| Inaccuracy (related to measuring range), with calibration (on request) | < 1 | % |
**Additionally Integrated 9-DoF IMU
(3-axis MEMS Accelerometer ACC / Gyrometer GYR / Magnetometer MAG)**
| Parameter | Value | Unit |
|---|---|---|
| Sampling rate | = 1/25 of the sampling rate of the main sensor (e.g. 160 Hz at 4000 Hz) | 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 |
Internal Temperature Sensor
| Parameter | Value | Unit |
|---|---|---|
| Measuring range | -20 to 60 | °C |
Solar Energy Harvesting (Option E1)
| Parameter | Value | Unit |
|---|---|---|
| Input voltage (VSolar) | 0.05 to 5 | V |
| Maximum input current | 110 | mA |
| Input power | 0.003 to 550 | mW |
| MPPT (Maximum Power Point Tracking) | 75 % × input voltage (max. 4 V) | – |
Secondary Battery – Rechargeable (Option E1)
| Parameter | Value | Unit |
|---|---|---|
| Charging cut-off voltage | 4.2 | V |
| Discharge cut-off voltage | 3.3 | V |
| Charge-ready voltage | 3.35 | V |
| Charging speed (Option BS) | up to 100 | mA |
Primary Battery (Option E1)
| Parameter | Value | Unit |
|---|---|---|
| Cut-off voltage | 2.4 | V |
| Maximum voltage | 4.5 | V |
DC Input (Option E2)
| Parameter | Value | Unit |
|---|---|---|
| Input voltage | 5–30 | V |
| Maximum power consumption | 50 | mW |