SG-Link® -mXRS™ Wireless Strain Node

Submitted by scott on Wed, 07/27/2011 - 09:48

SG-Link® -mXRS™ Wireless Strain Node

Features precision time-keeping and extended range capabilities; measures strain, torque, load, pressure and magnetic fields.

Overview

Featuring complete strain gauge signal conditioning, embedded processing, wireless communications, and precision timekeeping, SG-Link® -mXRS wireless nodes operate within a fast, synchronized, scalable network of wireless sensor nodes located up to 1 km from our WSDA® -Base. SG-Link® -mXRS nodes include an internal rechargeable Li-Ion battery and measure strain, torque, load, pressure and magnetic fields through a connector to user-supplied bridge sensors.

At the heart of MicroStrain’s extended range synchronized (mXRS™) system is the WSDA®-Base, which uses our exclusive beaconing protocols to synch precision timekeepers embedded within each sensor node in the network. The WSDA®-Base also coordinates data collection from all sensor nodes, including SG-LINK-mXRS. Users can easily program each node on the scalable network for simultaneous, periodic, or burst mode sampling with our Node Commander® software, which then automatically configures network radio communications to maximize the aggregate sample rate.

Microstrain SG-Link® -mXRS™ Wireless Strain Node

Applications

Modal testing inclination & vibration testing and control
Security systems enabled by wireless sensor networks
Sports performance and sports medicine analysis

Support for hundreds of simultaneous sampling wireless sensor nodes
Node to node synchronization of +/- 32 microseconds
Ultra-stable on-board precision timing reference of +/- 3 ppm over industrial temperature range
Extended wireless communication range to 2 km

Input channels

1 full differential input channel, 350 Ω resistance or higher (with optional bridge completion), 1 single ended input (0 - 3 volts maximum), and internal temperature sensor

Temperature sensor

-40 °C to 70 °C range, typical accuracy +/-2 °C (at 25 °C)

Anti-aliasing filter bandwidth

-3 dB cutoff at 500 Hz (factory adjustable)

Measurement accuracy

+/-0.1% full scale typical

Resolution

1 bit: 0.024%
1 microstrain typical for 3 wire full bridge strain gauge (when used in accordance with MicroStrain recommendations)

DC bridge excitation

+3 volts DC at 50 mA maximum (pulsed to sensors for sample rates of 100 Hz and below to conserve power)

Programmable gain

software programmable: 104 to 1800

Programmable offset

software programmable

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

Sample rates

1/hr - 4 kHz; synchronous mode 1 Hz - 512 Hz

Synchronous sampling mode network capacity

transmit real time data from node to PC - rate depends on number of active channels and transmitting nodes.
e.g.: 3 nodes, 1 channel, 512 Hz
15 nodes, 1 channel, 256 Hz
31 nodes, 1 channel, 128 Hz
63 nodes, 1 channel, 64 Hz
127 nodes, 1 channel, 32 Hz

sample rates and # of channels are easily configured within Node Commander® Network Configuration Wizard

Synchronization between nodes

+/-32 μsec in synchronous sampling mode with 10 second beacon interval

Synchronous sample rate stability

+/-3 ppm

Wireless shunt calibration

channel 1, internal shunt calibration resistor 499 KΩ

Radio frequency (RF) transceiver carrier

2.4 GHz direct sequence spread spectrum, license free worldwide (2.405 to 2.480 GHz) – up to 16 channels, radiated power programmable from 0 dBm (1 mW) to 20 dBm (100 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

programmable communication range from 70m to 2,000m

Internal Li-Ion battery

3.7 volt 250 mAh lithium ion rechargeable battery or external power 3.2 to 9 volts

Power consumption

SG-Link® node only: real-time streaming - 2.4 mA, datalogging - 25 mA, sleeping - 0.1 mA with 1000 ohm strain gauge

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 standard (high g option available)

Dimensions

58 mm x 50 mm x 26 mm (enclosure without antenna) 46 mm x 36 mm x 16 mm (circuit board assembly only)

Weight

50 g (with enclosure); 17 g (circuit board assembly only)

Enclosure material

ABS plastic

Software

Node Commander® Windows XP/Vista/7 compatible

Compatible base stations

WSDA®, WSDA® -Base

FCC ID

XJQMSLINK0001

IC ID

8505A-MSLINK0001

General Documentation
Software Development Kit
- MicroStrain Wireless Sensor Networks Software Development Kit (SDK)
Mechanical Prints
Technical Notes
FAQ's
- Extended Range Synchronized (mXRS™) Wireless Sensing System FAQs
Videos

Product Contact Form

Submitted by scott on Tue, 07/19/2011 - 10:51

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SG-Link + WSDA-Base Station Starter Kit

Online Price: $1,540.00 Part Numbers: 6308-3000 / 6307-xxxx	Includes: SG-Link Sensor (adjust quantity in shopping cart) Base station (select which type on the right) Required cabling Node Commander software Node charger	WSDA-Base Starter Kit (includes software & cables) WSDA-Base Options (required) * WSDA-Base Analog, +$200.00 WSDA-Base RS-232 WSDA-Base USB

SG-Link® -mXRS™ Wireless Strain Node

Product Contact Form

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