MicroStrain 2.4 GHz G-LINK Wireless Accelerometer Node

Introduction

Combining MEMS accelerometers with MicroStrain® award-winning Micro Datalogging Transceiver systems, G-Link® wireless accelerometer node is a high speed, triaxial accelerometer node, designed to operate as part of an integrated wireless sensor network system.

Featuring 2 KHz sweep rates, combined with 2 MB of flash memory, these little nodes pack a lot of power in a small package. Every node in the wireless network is assigned a unique 16 bit address, so a single host transceiver can address thousands of multichannel sensor nodes.

The bi-directional RF communications link can trigger a sample to be logged from 70 meters, or request real-time data to be transmitted to the host PC for data acquisition/analysis. The frequency agile system enables simultaneous real-time streaming from up to 16 nodes in the 2.4 GHz range.

Available with a 2g or 10g range, these small, fast, wireless accelerometers can be used to monitor tilt and vibration in a wide range of machines and structures.

A software development kit is available, which includes fully-commented source code and a compiled executable for Microsoft® Visual Studio C++ .NET 7.1, Microsoft® VB 6.0, Microsoft® VB.NET 2003, Microsoft® VB.NET 2005 and LabVIEW® 7.1.

Applications

Inclination & vibration testing, control

Security systems enabled by wireless sensor networks

Assembly line testing with "smart packaging"

Sports performance and sports medicine analysis

Condition-based maintenance by wireless sensor networks

Smart machines, smart structures & smart materials

On-board Accelerometers

Triaxial MEMS accelerometers, Analog Devices AD22293 (2g) or ADXL210 (10g)

Accelerometer Range

± 2g or ± 10g

Measurement Accuracy

10 mg

Resolution

1.5mg RMS(2g), 9mg RMS(10g)

Temperature Sensor

-40˚C to +70˚C range, accuracy 2˚C (at 25˚C)

Anti-aliasing Filter Bandwidth

-3 dB cutoff at 250 Hz (factory adjustable)

Analog to Digital (A/D) Converter

Successive approximation type, 12 bit resolution

Data Storage Capacity

2 megabytes (approximately 1,000,000 data points)

Data Logging Mode

Log up to 1,000,000 data points (from 100 to 65,500 samples or continuous) at 32 Hz to 2048 Hz

Sensor Event Driven Trigger

Commence datalogging when threshold exceeded

Real-time Streaming Mode

Transmit real time data from node to PC - rate depends on number of active channels:
1 channel - 4 KHz,
2 channels - 2 KHz,
3 channels - 1.33 KHz,
4 channels (including temp.) - 1 KHz

Low Duty-cycle Mode

Supports multiple nodes on single RF channel

Synchronization Between Nodes

Datalogging 4 sec 50 ppm, LDC mode time stamped at PC

Sample Rate Stability

25 ppm for sample rates > 1 Hz, 10% for sample rates < 1 Hz

Radio Frequency (RF)Transceiver Carrier

2.4 GHz direct sequence spread spectrum, license free worldwide (2.405 to 2.480 GHz) - 16 channels, radiated power 0 dBm (1 mW)

RF Data Packet Standard

IEEE 802.15.4, open communication architecture

RF Data Downloading

8 minutes to download full memory

Range for Bi-Directional RF Link

70 m line-of-sight, up to 300 m with optional high gain antenna

Internal Li-Ion Battery

3.7 volt lithium ion rechargeable battery, 250 mAh capacity
Customer may supply external power from 3.2 to 9 volts

Power Consumption

Real-time streaming - 25 mA, datalogging - 25 mA, sleeping - 0.5 mA

Operating Temperature

-20˚C to +60˚C with standard internal battery and enclosure, extended temperature range optional with custom battery and enclosure. -40˚C to +85˚C for electronics only

Maximum Acceleration Limit

500 g

Dimensions

58 mm x 43 mm x 26 mm (enclosure without antenna)
36 mm x 36 mm x 24 mm (circuit board assembly only)
For dimensioned print go to Documentation tab

Weight

47 g (with enclosure)
15 g (circuit board assembly only)

Enclosure Material

ABS plastic

Software

Node Commander® Windows XP/Vista compatible

Compatible Base Stations

USB, RS-232, Analog, WSDA®

Patents Pending

General Documentation

Mechanical Prints

Technical Notes

FAQ's

Wireless FAQ's

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G-Link® Starter Kits MicroStrain has identified your location as United States. If this is incorrect please contact sales at 802-862-6629 or sales@microstrain.com
	G-Link +/-2G Accelerometer, USB Base station Starter Kit G-LINK-2G-2400-SK2 Includes (2) G-Link-2G-2400-M, (1) USB base station, (1) USB cable, (1) antenna, (1) power supply, Windows XP compatible software Part Number: 6305-0042 Online price: $2095.00	G-Link +/-10G Accelerometer, USB Base station Starter Kit G-LINK-10G-2400-SK2 Includes (2) G-Link-10G-2400-M, (1) USB base station, (1) USB cable, (1) antenna, (1) power supply, Windows XP compatible software Part Number: 6305-1042 Online price: $2095.00

	G-Link +/-2G Accelerometer, Analog Output Base station Starter Kit G-LINK-2G-2400-SKA Includes (1) G-Link-2G-2400-M, (1) Analog output base station, (1) Analog base station power supply, (1) antenna, Windows XP compatible software Part Number: 6305-0011 Online price: $2145.00	G-Link +/-10G Accelerometer, Analog Output Base station Starter Kit G-LINK-10G-2400-SKA Includes (1) G-Link-10G-2400-M, (1) Analog output base station, (1) Analog base station power supply, (1) antenna, Windows XP compatible software Part Number: 6305-1011 Online price: $2145.00

G-Link® Wireless Accelerometer Node

G-Link® Starter Kits