Vibration sensor simplifies development of smart sensor nodes in CBM systems

Analog Devices ADcmXL3021 Triaxial Vibration Sensor is a low noise, wide bandwidth, highly integrated vibration monitoring module, consolidating advanced MEMS sensors and an optimised signal chain and embedded signal processing into a mechanically optimised package, allowing predictive maintenance solutions. The device is intended to simplify the development of smart sensor nodes in CBM systems.

The typical ultralow noise density (26μg/√Hz) in the MEMS accelerometers supports best resolution. The wide bandwidth (DC to 10kHz within 3dB flatness) allows tracking of key vibration signatures on multiple machine platforms.

The signal processing incorporates high-speed data sampling (220kSPS), filtering, windowing, 4096-time sample record lengths, FFT, user-configurable spectral or time statistic alarms, and error flags. The SPI offers access to a register structure that holds the vibration data and a broad range of user-configurable functions.

The device is provided in an aluminium package size of 23.7mm x 27mm x 12.4mm with four mounting flanges to aid installation with standard machine screws. This package offers consistent mechanical coupling to the core sensors across a wide frequency range. The electrical interface is by a 14-pin connector on a 36mm flexible cable, which allows a broad variety of location and orientation options for system mating connectors.

The device needs only a single, 3.3V power supply and supports an operating temperature range of -40C to +105C.