2.4 GHz SG-Link® OEM Wireless Strain Node, Wireless accelerometer, Wireless strain gauge

OVERVIEW

SPECIFICATIONS

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Description

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 off set, and one single-ended channel, the SG-Link® OEM 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.

Fast and extremely versatile, the SG-Link® OEM is designed to operate as part of a high speed wireless sensor network. Featuring 2 KHz sweep rates, combined with 2 Mbytes fl ash 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 thousands 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® C++, NET 7.1, Microsoft® VB 6.0, Microsoft® VB.NET 2003, Microsoft® VB.NET 2005 and LabVIEW® 7.1.

Applications

Enables sensor manufacturers to develop wireless versions of their hardwired sensors.

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

Temperature Sensor

-25˚C to 70˚C range, typical accuracy ±0.5˚C (at 25˚C)

Measurement Accuracy

± 0.1% typical

Resolution

± 1 bit 0.0024%
± 1 microstrain typical for 3 wire quarter bridge strain gauge

DC Bridge Excitation

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

Programmable Gain

Software programmable: 20 to 2560

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

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

Low duty-cycle mode

Supports multiple nodes on single RF channel, total update bandwidth of 500 Hz divided by number of nodes

Synchronization between nodes

Datalogging 100 µsec ± 50 ppm. LDC mode time stamped at PC

Sample rate stability

Datalogging and LDC (mode(2Hz to 500Hz) 100 µsec ± 25 ppm (90 msec/hour) LDC mode (1 Hz to 2 samples per hour) ± 10%

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 (2.450 to 2.490 GHz) - 16 channels

RF Data Packet Standard

IEEE 802.15.4, open communication architecture

RF Programming & 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

Battery

Customer supplied from 3.2 to 9 volts

Power Consumption

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)

Operating Temperature

-40 to +85˚C

Dimensions/Weight

Standard confi gurations: Potted - 31 mm x 31 mm x 7.8 mm - weight 10 grams Unpotted - 31 mm x 31 mm x 5 mm - weight 4.3 grams Unpotted - 31 mm x 21 mm x 5 mm - weight 3 grams Custom confi gurations available on request, for example: Unpotted - 25.4 mm diameter x 6.3 mm - weight 3.1 grams

Software

Agile-Link™ Windows XP® compatible

PC Comm

Serial port, 115.2 kBaud

*For dimensioned print go to www.microstrain.com

General Documentation

Mechanical Prints

SG-Link® OEM Dimensional Drawing

Technical Notes

FAQ's

Wireless FAQ's

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SG-Link® Starter Kits

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) SG-Link power supply, (3) antennae, Windows XP compatible software

Part Number: 6308-1042
Online price: $2095.00

MicroStrain has identified your location as United States. If this is incorrect please contact sales at 802-862-6629 or sales@microstrain.com

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) SG-Link power supply, (1) Analog base station power supply, (2) antennae, Windows XP compatible software

Part Number: 6308-1011
Online price: $2145.00

MicroStrain has identified your location as United States. If this is incorrect please contact sales at 802-862-6629 or sales@microstrain.com