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Date: 15th Nov 2010
3-axis Vibration sensor with built-in
DSP features
Analog Devices has made available a vibration sensor with
built-in signal analysis intelligence. The new ADIS16227
iSensor is a tri-axial, digital vibration monitor packing
MEMS accelerometer based vibration sensor, ADCs and digital
signal processor (DSP) with a serial peripheral interface
(SPI). ADIS16227 features 22-kHz sensor resonance and 100-kSPS
sample rate providing a frequency response that is suitable
for wide-bandwidth vibration monitoring applications. The
ADIS16227 samples, processes and stores x, y and z acceleration
data into the FFT (Fast Fourier Transform) buffer and FFT
records (if selected), including time stamp. The programmable
digital filter offers low-pass configuration options and
an internal clock drives the data sampling system during
a data capture event, which eliminates the need for an external
clock source. The data capture function has three different
modes that will accommodate the needs of many different
applications. The ADIS16227 also offers an integrated digital
temperature sensor and digital power-supply measurements,
as well as a digital self-test feature that enables reliable
embedded operation within the targeted applications. The
extended operating temperature range for the device is -40°C
to +125°C.
This sugar cube shaped device is for industrial equipment
designers to detect isolate correct and vibration related
data at early stage. Named applications cover wind turbines
to precision factory automation and assembly equipment,
which will benefit from automatic vibration profiling.
"For the first time, industrial equipment designers
have an easy-to-use, affordable and complete sugar-cube
sized vibration analyzer," said Bob Scannell, iSensor
business development manager, MEMS/Sensors Group, Analog
Devices. "With the ADIS16227, developers have access
to proven 4th-generation vibration sensing capability with
frequency domain processing programmability and tuning that
greatly improves the ability to isolate the vibration source
quickly."
Key High-Performance Features and Benefits listed by the
ADI include:
1. Embedded frequency domain processing, 512-point real
value FFT, and on-board storage provides the ability to
identify and classify individual sources of vibration, monitor
their changes over time and react to programmable threshold
levels.
2. Configurable spectral alarm bands and windowing options
allow analysis of the full frequency spectrum with the configuration
of 6 bands, Alarm1 (warning threshold) and Alarm2 (fault
threshold) for earlier and more accurate detection of problems.
3. Compact 15-mm cube, fully embedded and programmable,
enables placement close to vibration source and early detection
of small signals in a repeatable way, avoiding data discrepancies
due to differences in location/coupling from measurement-to-measurement
using handheld devices.
4. Configurable input range (dynamic range) with four range
options (0-1g, 0-5g, 0-20g, 0-70g) allows easy programming
to support multiple operational scenarios, improves precision
of FFT and aids in observing lower-level signals.
5. Tri-axis wide-bandwidth (22-kHz resonance) acceleration
sensing with configurable sample rate (up to 100 kHz) and
averaging/decimation options allows more accurate assessment
of even subtle vibration profile changes.
The ADIS16227 is available in a 15 mm x 15 mm x 15 mm module
with a threaded hole for stud mounting. The dual-row, 1-mm,
14-pin, flexible connector enables simple user interface
and installation.
| Product |
Availability |
Operating
Temperature Range |
Price Each
Per 1,000 |
Packaging |
| ADIS16227 |
In production now |
-40°C to +125°C |
$174.00 |
15 mm x 15 mm x 15 mm 14-pin flex connector for
electrical; threaded mechanical stud mount |
s.
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