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SG-Link® OEM Wireless Module
Direct strain gauge input datalogging transceiver for use in high speed wireless
sensor networks.
Features and Benefits
- Out of the box wireless sensing capability for most analog sensors
- 2.4 GHz direct sequence spread spectrum radio is license free worldwide
- IEEE 802.15.4 open communication architecture
- Supports simultaneous streaming from multiple nodes to PC
- Operate in datalogging or streaming mode
- Communication range up to 70 m line-of-sight, 300 m with high gain antennas
- Low power consumption for extended use
- Free software development kit enables OEMs to easily develop custom applications
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Introduction
The SG-Link® OEM wireless module is designed to provide sensor manufacturers
with a low cost method of adding wireless capability to their product line.
With one differential channel, which includes full strain gauge conditioning and
programmable offset, and one single-ended channel, the module is compatible
with most types of analog sensors including strain gauges, displacement sensors,
load cells, torque transducers, pressure sensors, accelerometers, geophones, temperature
sensors, inclinometers, and others.
It's fast, extremely versatile and designed to operate as part
of a high speed wireless sensor network. Featuring 2 KHz sweep rates, combined with
2 MB flash memory, these little nodes pack a lot of power in a small package.
With every node in the wireless network assigned a unique 16 bit address, a single
host transceiver can address hundreds of multi-channel sensor clusters.
A scalable system architecture enables small and large networks of nodes to collect
data simultaneously using a broadcast trigger command to datalog to the nodes' internal
memory, or transmit real-time data to a PC or gateway using parallel frequency streaming
(FDMA) or time-slotted communications (TDMA).
OEM manufacturers can develop their own applications with our software development
kit, 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.
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Applications
Provides wireless sensing capabilty to OEM manufacturers
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Input Channels |
1 full differential input channel, 350Ω resistance or higher (with optional
bridge completion), 1 single ended input (0 - 3 volts maximum), and internal temperature
sensor |
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Temperature Sensor |
-40˚C to 70˚C range, typical accuracy ±2˚C (at 25˚C) |
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Anti-aliasing Filter Bandwidth |
-3 dB cutoff at 250 Hz (factory adjustable) |
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Measurement Accuracy |
± 0.1% full scale typical |
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Resolution |
1 bit: 0.024%
1 microstrain typical for 3 wire quarter bridge strain gauge (when used in accordance with MicroStrain® recommendations) |
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DC Bridge Excitation |
+3 volts DC at 50 mA maximum (pulsed to sensors for samples rates of 100 Hz and
below to conserve power) |
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Programmable Gain |
Software programmable: 20 to 2560 |
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Programmable Offset |
Software programmable |
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Analog to Digital (A/D) Converter |
Successive approximation type, 12 bit resolution
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Data Storage Capacity |
2 megabytes (approximately 1,000,000 data points) |
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Data Logging Mode |
Log up to 1 million data points at sampling rates from 32Hz to 2048Hz per channel in fixed (from 100 to 65,500 samples) or continuous (until memory full) sessions |
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Sensor Event Ddriven Trigger |
Commence datalogging when threshold exceeded |
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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 |
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Low Duty-cycle Mode |
Supports multiple nodes on single RF channel |
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Synchronization Between Nodes |
Datalogging ±4 µsec ±50 ppm, LDC mode time stamped at PC |
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Sample Rate Stability |
±25 ppm for sample rates > 1 Hz, ±10% for sample rates < 1 Hz |
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Wireless Shunt Calibration |
Channel 1. Internal shunt calibration resistor 499 KΩ |
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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 (1mW) |
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RF Data Packet Standard |
IEEE 802.15.4, open communication architecture |
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RF Data Downloading |
8 minutes to download full memory |
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Range for Bi-directional RF Link |
70 m line-of-sight, up to 300 m with optional high gain antenna |
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Battery |
Customer supplied from 3.2 to 9 volts |
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Power Consumption |
SG-Link® OEM node only: real-time streaming - 25 mA, datalogging - 25 mA, sleeping -
0.5 mA
External sensors: 350 Ω strain gauge - 8 mA, 1000 Ω strain gauge
- 3 mA (add sensor consumption to above to calculate total power consumption) |
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Operating Temperature |
-40 to +85˚C |
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Maximum Acceleration Limit |
500 g standard (high g option available) |
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Dimensions/Weight |
Standard configurations:
Unpotted - 33mm x 30mm x 5mm - weight 4.8 grams
Custom configurations available on request, for example:
Potted - 31 mm x 30 mm x 7.8 mm - weight 10 grams
Unpotted - 31mm x 21mm x 5mm - weight 3 grams
Unpotted - 25.4mm diameter x 6.3mm - weight 3.1 grams
For dimensioned print go to Documentation tab |
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Software |
Node Commander® Windows XP/Vista compatible |
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Compatible Base Stations |
USB, RS-232, Analog, WSDA® |
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General Documentation
Mechanical Prints
Technical Notes
FAQ's
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SG-Link® Starter Kits
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SG-Link 1 input channel, USB base station starter kit
OEM-SG-LINK-1CH-2400-SK2
Includes
(2) SG-Link-1CH-2400-M, (1) USB base station, (1) USB cable, (1) power supply, (3) antennae, Windows XP compatible software
Part Number: 6308-1042
Online price: $2095.00
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MicroStrain has identified your location as
United States. If this is incorrect please contact
sales at 802-862-6629 or sales@microstrain.com
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OEM-SG-Link 1 input channel, Analog output base station starter kit
OEM-SG-LINK-1CH-2400-SKA
Includes
(1) OEM-SG-Link-1CH-2400-M, (1) Analog output base station, (1) power supply, (1) Analog base station power supply, (2) antennae, Windows XP compatible software
Part Number: 6308-1011
Online price: $2145.00
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MicroStrain has identified your location as
United States. If this is incorrect please contact
sales at 802-862-6629 or sales@microstrain.com
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