Wireless Sensor for measuring Acceleration, Shock & Vibration
Transcript of Wireless Sensor for measuring Acceleration, Shock & Vibration
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AX-3D Version
www.beanair.com
SmartSensorWireless Triaxial Accelerometer
Mems TechnologyNon contact actuationTri-Axial :
+/- 2g or +/- 10gAnti-Aliasing
Filter 5th
Streaming
5 kSPSIEEE 802.15.4 AntennaDivertsity
Main Features
Applications
Wireless Triaxial accelerometer based
on MEMS Technology
Measurement range: +/- 2g or +/- 10g
Very Low noise Density: 45 g/Hz
(+/- 2g version), 100 g/Hz (+/- 10g version).
Excellent radio link relying on the radio
antenna diversity developed by Beanair
Non contact actuation for faster installation
Streaming packet mode: 5 KSPS (mono-channel)
Radio Range : 1000 m (L.O.S)
Ultra-Power radio Technology IEEE 802.15.4
Current consumption in idle mode :
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Remote configuration and monitoring
*Over-the-Air Configuration
OTAC*
The BeanScape application allows the
user to view all the data transmitted by
the BeanDevice AX-3D
With the OTAC (Over-the-Air configura-
tion) feature, the user can remotely
configure the BeanDevice AX-3D.
Several data acquisition modes are available on the
BeanDevice AX-3D :
Low Duty Cycle Data Acquisition mode (LDCDA): the data
acquisition is immediately transmitted by radio. The trans-
mission frequency can be configured from 1s to 24h.
Alarm Mode: the measured value is transmitted by radio
whenever an alarm threshold (fixed by the user) is detected
(4 alarm threshold levels High/Low).
Survey Mode: operates like the Alarm mode but the
device sends frequently a beacon frame informing its
current status.
Streaming Packet Mode: all measured values are
transmitted by packet within a continuous flow at 5000
samples per second maximum
Streaming Mode: all measured values are transmitted in
real-time within a continuous flow at 100 samples per
second maximum
Math Mode : Values such as the mean value, minimum
value, maximum value and standard deviation are calculated
on sample time series and transmitted by radio .
AX-3D
Antenna Diversity
While the vast majority of wireless sensors shows their
limits in harsh industrial environment, the
BeanDevice AX-3D integrates an innovative antenna
diversity design, allowing to optimize the radio link quality
in environments subject to random and diverse
disturbance. Diversity antenna improves both the quality
and reliability of a wireless link by 30%.
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SmartSensorEmbedded Data Logger up to
1,000,0000 data acquisition records
The BeanDevice AX-3D integrates an embedded DataLogger, which can be used to log data when a
Wireless Sensor network can not be easily deployed on your site. All the data acquisition are stored on the
embedded flash and then transmitted to the BeanGateway when a Wireless Sensor Network is established.
The dataLogger feature is compatible with all the data acquisition mode available on your
BeanDevice AX-3D:
LowDutyCycle Data Acquisition
Alarm
Math
Streaming & Streaming packet ( maximum data rate : 1,67 Ksamples per second for each axis)
Example: Vibration Analysis on
windmills blades
The BeanDevice AX-3D is
configured with its dataLogger
feature. A standalone installation
of the BeanDevice AX-3D will be
done on the windmills blades,
without the necessity to be
connected to the BeanGateway.
Once the blades starts rotating,
each data is recorded on the
embedded flash.
When the windmill is for mainte-
nance, a technician working on
the site can send a request for a
log transmission. Then the
BeanDevice AX-3D starts sen-
ding all its logs . If all the logs are
sucessfully transmitted to the
BeanGateway, the flash memory
is erased and new logs will be
recorded.
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RF Specifications
Wireless Protocol Stack IEEE 802.15.4 (2006 version)
WSN Topology Point-to-Point / Star
Encryption AES 128 bits (AES integrated coprocessor)
Data rate 250 Kbits/s
RF Characteristics ISM 2.4GHz 16 Channels. Antenna diversity architecture designed by Beanair
TX Power +0 dBm to +18 dBm
Receiver Sensitivity -95,5 dBm to -104 dBm
Maximum Radio Range 500m (L.O.S)
Antenna Antenna diversity : 2 omnidirectional antenna with a gain of 2,2 dBi
Product referenceBND-AX3D -NGWP
NMeasurement Range:
- 2 : +/-2g measurement range- 10: +/-10g measurement range
WPWireless Technology
- IEEE: IEEE 802.15.4 (2006)
Example: BND-AX3D-10G-IEEEWireless Accelerometer with 10g measurement range , IEEE 802.15.4 Wireless Technology
Accelerometer Specifications
Accelerometer
technologyMEMS technology triaxial accelerometer
Sensitivity AX-3D-2G Version: 16384 counts/gAX-3D-10G : 3277 counts/g
Typical non-linearity 0,1% FS
Analog to Digital converter 16-bits, SAR architecture (Successive Approximation Register) with temperature compensation
Sensor frequency response
(-3 dB)0 to 800 Hz
Noise spectral density 2g version: 45 g/Hz / 10g version : 100 g/Hz
Anti-aliasing filterButterworth 5
thorder filter cut-off frequency : 1 Hz to 2000 Hz remotely programmable
(BeanScape)
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Others specifications
Embedded logger
Storage Capacity : up to 1 000 000 data acquisition
Integrated real time clock
Write/read Cycle: 400 000
Real Time Clock Extremely Accurate Real Time Clock for measurement timestamping
Integrated battery charger
Integrated Lithium-ion battery charger with high precision battery monitoring :
Overvoltage Protection, Overcurrent/Short-Circuit Protection, Undervoltage Protection
Battery Temperature monitioring
Current accumulation measurement
Current consumption
During data acquisition : 20 to 30 mA
During Radio transmission : 40 mA @ 0dBm , 70 mA @ 18 dBm
During Idle : < 45 uA
Operating Temperature Industrial temperature : -40 C to +85 C
EnclosureAluminium & Watertight (IP66) enclosure
Dimensions in mm (LxWxH): 80x55x21 mm, Weight (battery included) : 135g
Shocks resistance 60g during 50 ms
NormsCE Labelling Directive R&TTE (Radio) ETSI EN 300 328
ROHS - Directive 2002/95/EC
External power supply External power supply : +8v to +28v
Rechargeable batteryHigh density Lithium-Ion rechargeable battery with a capacity of 1.3 Ah (referenced as
BAT1.3DMG)
Power-supply bloc
(Option)Wall plug-in, Switchmode power Supply 12V @ 1,25A with sealed M8 Plug (IP67)
Mechanical mounting
(Option)Screw mounting
Over-the-air configuration (OTAC) parameters
Data Acquisition mode
(SPS = sample per second)
Low Duty Cycle Data Acquisition (LDCDA) Mode: 1s to 24 hour
Alarm & Survey mode: 1s to 24 hourMath Mode : 5 kSPS maximum
Streaming Packet Mode: 5 kSPS maximum
Streaming Mode: 100 SPS maximum
Sampling Rate(in streaming packet mode)
Minimum: 1 SPS
Maximum: 5 kSPSmaximum (one channel activated), 2,5 kSPS (2-channels activated),
1,67 kSPS (3 channels activated)
Alarm Threshold 2 high levels alarms & 2 low levels alarms
Cut-off frequency
(Anti-aliasing filter)
12000 Hz
Power Mode Sleeping, Sleeping with Network Listening & Active
TX Power -7 dBm / -1 dBm / 5 dBm / 11 dBm / 15 dBm / 18 dBm
Product specifications are subject to change without notice. Contact Beanair for latest specifications.
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Indoor Version
AX-3D
Scilab scripts for digital
signal processing
OR
Getting started with a Wireless Sensor Networks
Description StarterKit Reference
Starterkit Wireless Accelerometer 2g
1x BeanGateway Ethernet(Indoor version)1x BeanDevice AX-3D-2G-IEEE
1x Beanscape Lite
1x Scilab Scripts for Digital Signal Processing
(FFT and PPV Filtering)
SK_AX_3D_2G_IND
Starterkit Wireless Accelerometer10g
1x BeanGateway Ethernet(Indoor version)1x BeanDevice AX-3D-10G-IEEE
1x Beanscape Lite
1x Scilab Scripts for Digital Signal Processing
(FFT and PPV Filtering)
SK_AX_3D_10G_IND
Starterkit Wireless Accelerometer 2g
1x BeanGateway Ethernet(Outdoor version)1x BeanDevice AX-3D-2G-IEEE
1x Beanscape Lite
1x Scilab Scripts for Digital Signal Processing
(FFT and PPV Filtering)
SK_AX_3D_2G_OUT
Starterkit Wireless Accelerometer10g
1x BeanGateway Ethernet(Outdoor version)1x BeanDevice AX-3D-10G-IEEE
1x Beanscape Lite
1x Scilab Scripts for Digital Signal Processing
(FFT and PPV Filtering)
SK_AX_3D_10G_OUT
Outdoor Version
Free software for numerical
computation
The BeanDevice AX-3D operates only on
our Wireless Sensor Networks , you will need
the BeanGateway and the BeanScapefor starting a wireless sensor Networks .