3-axis accelerometer for dynamic measurement
DynaSense
A 3-axis MEMS accelerometer for precise measurement of acceleration and tilt, combined with a control unit for dynamic measurements. Sampling rate up to 4 kHz, wireless synchronization, cloud data transfer and local backup on an SD card. Ideal for monitoring bridges, industrial structures and seismic measurements.
Contact usPrecise mode with full data recording to the SD card and cloud transfer
Sensitivity of up to 3.9 μg/LSB in the ±2 g range
Local data backup with gradual transfer to the cloud or via FTP
Instant transfer of measured data while retaining the SD card backup
About the product
DynaSense is a 3-axis MEMS accelerometer designed for precise measurement of acceleration and tilt along three axes. The sensor is suitable for inertial measurement units, structural monitoring systems, tilt measurement and seismic measurements. An integrated temperature sensor ensures reliable operation in the −40 °C to +125 °C range. Optional temperature compensation increases tilt measurement accuracy to 0.001° within ±20° of the calibration position, with an angle measurement resolution of 0.0007° (0.006 mm/m).
The DynaSense control unit is a configurable, universal unit for dynamic measurements with low power consumption — it enables battery operation and wireless synchronization of measurements between devices via WiFi or wired LAN. It supports three measurement modes: precise (up to 4 kHz, full recording), aggregated (minimum, maximum, average per interval) and real-time (up to 500 Hz with instant transfer to the cloud). Control is via an integrated web interface, the cloud, or MQTT.
Typical deployment areas include dynamic monitoring of bridges and viaducts under traffic loads, vibration monitoring of industrial machinery and halls, seismic measurements and ground movement monitoring. DynaSense allows measurements to be triggered based on an initialization event and supports inter-device communication — ideal for distributed monitoring networks with automatic event chaining.
Technical specifications
| Sensor | |
| Main sensor | 3-axis MEMS accelerometer |
| Measurement range | selectable ±2 g, ±4 g, ±8 g |
| AD converter resolution | 20 bit |
| Sensitivity in the ±2 g range | 256 LSB/g (3.9 µg/LSB) |
| Sensitivity in the ±4 g range | 128 LSB/g (7.8 µg/LSB) |
| Sensitivity in the ±8 g range | 64 LSB/g (15.6 µg/LSB) |
| Noise spectral density (NSD) | 22.5 μg/√Hz |
| Tilt measurement accuracy without compensation | 0.1° (±180°) |
| Tilt measurement accuracy with compensation | 0.001° (±20°) from calibration position |
| Angle measurement resolution | 0.0007° (0.006 mm/m) |
| Long-term repeatability | 0.16% (0.3% on the Z-axis) |
| Temperature stability without compensation | 0.15 mg/°C |
| Sensor supply voltage | 2.25 V – 3.6 V |
| Power draw during active measurement | 150 µA |
| Power draw in standby mode | 21 µA |
| Sensor temperature range | −40 °C to +125 °C |
| Control unit | |
| Processor | ESP32 SoC Xtensa dual-core 32 bit |
| WiFi | 802.11b/g/n |
| Bluetooth | V4.2 BR/EDR and Bluetooth LE |
| LAN | 100BASE-TX | IEEE 802.3 |
| SD card | max. 32 GB SD SDHC |
| Max. sampling rate | 4 kHz |
| Synchronization between units | wirelessly via WiFi, or via LAN cable |
| Precise time source | NTP, PTP (precise time protocol), GPS |
| Control | integrated web interface, cloud, MQTT |
| Data storage | cloud, SD card, FTP |
| Unit supply voltage | 2.7 – 6 V |
| PoE | optional 802.3af |
| Unit temperature range | −40 °C to +125 °C |