MicroStrain MicroStrain Microminiature Sensors







  HOME > Products > Wireless Sensors > DVRT-Link™ Wireless Displacement Node

DVRT-Link™ Wireless Displacement Node




Wireless signal conditioner for DVRT displacement sensors for use in high speed wireless sensor networks.

Features and Benefits
  • 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
  • Datalogging rates up to 2048 Hz, storing up to 1,000,000 measurements
  • Real-time streaming rates up to 4 KHz
  • Communication range up to 70 m line-of-sight, 300 m with high gain antennas
  • Low power consumption for extended use
  • Internal rechargeable battery
  • Compatible with all MicroStrain® DVRT® sensors


DVRT-Link

Introduction

The DVRT-Link™ wireless displacement node is an all-in-one, signal conditioning, wireless netwoking solution for all MicroStrain® DVRT® displacement sensors.

The DVRT-Link™ node combines the advanced microelectronics of the MicroStrain® DEMOD-DC® signal conditioner, with the versatility and wireless connectivity of the MicroStrain® wireless sensor node.

The node features sample rates up to 4 KHz and 2 MB flash memory. With every node in a wireless network assigned a unique 16 bit address, a single host transceiver can address thousands of sensors. They're fast, extremely versatile and designed to operate as part of a high-speed wireless sensor network.

Its bi-directional RF communications link can trigger samples to be logged to onboard memory 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.

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

Used with MicroStrain® DVRT® sensors for:

Miniature control elements for automotive and robotic systems

Pocess control for production line monitoring

Dimensional gauging for quality control applications

Measuring strain and deflection in materials science and civil structures

Linear/angular positioning of optical components

Miniature force, torque, acceleration sensors

Bomedical strain measurement in bone and soft tissue

Sensor Types Inductive (DVRT®)
Temperature Sensor -40 °C to 70 °C range, typical accuracy ±2°C (at 25 °C)
Signal to Noise Ratio 1,000:1 typical (Factory calibrated with DVRT® sensor)
Excitation Regulated sinewave, 150 KHz standard; other frequencies available on request
Low Pass Filter 800 Hz standard
Factory adjustable 10 Hz 20 KHz
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 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
Sensor Event Driven Trigger Commence datalogging when threshold exceeded
Real-time Streaming Mode Transmit real time data from node to PC at up to 4 KHz
Low Duty-cycle Mode Supports multiple nodes on single RF channel from
Synchronization Between Nodes Datalogging ±4 µsec ±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 (1mW)
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 DVRT-Link™ node only: real-time streaming - 33 mA, datalogging - 205 mA, sleeping - 0.1 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 standard (high g option available)
Dimensions 61 mm x 41 mm x 27 mm (enclosure without antenna
46 mm x 36 mm x 16 mm (circuit board assembly only)
For dimensioned print go to Documentation tab
Weight 55.48 g (with enclosure and antenna)
Enclosure Material ABS plastic
Software Node Commander® Windows XP/Vista compatible
Compatible Base Stations USB, RS-232, Analog, WSDA®
Please enter your Contact information. When finished, click SUBMIT button at bottom of page.
To better serve your needs, the fields marked * indicate required information.


*First Name:
 *Last Name:
Address
 City/Town
*State/Prov/County
 *Zip/Postal
*Country
  
*Email Address:
  
Company Name:
  
Phone Number:
 Fax Number:
 

*What product are you interested in?
Orientation
Displacement
Wireless
Force Probes

*How would you like us to contact you?
General Inquiry
Contact Immediately
Quote Me Now!
Technical Support Needed

*What is your interest?


*How did you hear about us?


How To Order

For individual components, additional system configurations, or quantity discounts, please contact sales@microstrain.com, call 802-862-6629 or contact any of MicroStrain's International Distributors or U.S. Representatives.






















© 2009 MicroStrain, Inc. | Contact Us | 1.800.449.DVRT(3878)
 
U.S. Representatives | International Distributors
 
Privacy and Legal Notices
 
Site Map