|
|
|
|
EmbedSense® Wireless Sensor
Wireless sensor and data acquisition system.
Features and Benefits
- Small size is ideally suited for embedded applications
- No batteries to maintain, hence nodes can operate for the life of the structure or machine
- Wide operating temperature from -40 C to +125 C
- 30 Hz sample rate
- Configuration available for high inertial loads, up to 50,000 g
- Low cost
- Requires no physical connection
- Communicates through non-conductive materials
- Provides high-resolution measurements
|
|
|
|
Introduction
EmbedSense® Wireless Sensor nodes are tiny, passive wireless sensor and data acquisition modules that are
small enough to be embedded in a product, enabling the next generation of smart structures and materials.
Batteries are completely eliminated, which means that the embedded sensors and EmbedSense® node can be
queried for the life of the structure. Because they can tolerate extreme g levels and high temperatures, sensor
measurements can be made in applications where previously no data could be obtained.
EmbedSense® uses an inductive link to receive power from an external coil and to return digital strain,
temperature and unique ID information. A reader coil is energized by an AC electromagnetic field from a 125 kHz signal
supplied by the reader unit. The EmbedSense® node picks up this energy and uses it to power its data
acquisition circuits. Communication is accomplished by the node shifting the tuning of its internal antenna from a
reflective state to an absorptive state, in accordance with data to be sent to the reader. The reader sees these shifts
as amplitude modulation (AM) on the power signal and converts the AM to a recovered data stream and passes it on to the
computer. When the reader sends a command to the module, it frequency modulates (FM) the power signal with command data,
which is detected by the node.
EmbedSense® nodes can read data from multiple types of sensors, including semiconductor temperature sensors,
thermocouples, strain gauges, pressure sensors, and load cells.
|
Applications
Smart structures, materials and machines
Intelligent medical implants
Monitoring turbines and other high-speed rotational equipment
Embedded process control
Temperature monitoring of composite panels during autoclave cure process
Monitoring physical parameters inside sealed containers
|
|
|
Number Input Channels |
2 Channels. 1 differential input and 1 internal temperature sensor
(Other configurations available as custom options) |
|
Input Amplifier |
Instrumentation amp, 110 dB CMRR, standard gain 250, factory options from 1 to 1000 |
|
Bridge Excitation |
3 VDC, regulated to 0.1%, up to 3 mA at 3 VDC available |
|
Sensor Types |
Piezoresistive bonded foil & semiconductor strain gauges, pressure/load/torque
transducers, thermocouples |
|
A/D Converter |
16 bit resolution successive approximation type (standard)
Other configurations available as custom options |
|
Identification (ID) |
User programmable, 16 bits |
|
Update Rates |
30 Hz/channel w/ 125 kHz operating frequency, 16 bit A/D
Other configurations available as custom options |
|
Communication Method |
Switched reactance, pulse code modulated serial (RS-232), clocked synchronous |
|
Coil-to-coil Separation |
Sensor dependent, 37mm minimum, 50mm typical |
|
EmbedSense® Power |
200 microamperes at 3 VDC, not including bridge excitation |
|
Operating Temperatures |
-40˚C to +125˚C |
|
Operating G Levels |
Independently tested to 50,000 g |
|
Dimensions |
Reader Assembly: 200mm length x 160mm (width) x 67mm (height)
Interrogation Antenna: 115mm (diameter) x 40mm (height)
Embeddable Node: 36mm (diameter) x 7mm (height) |
|
Weight |
Reader Assembly: 567 grams
Interrogation Antenna: 221 grams
Embeddable Node: 17 grams
Starter Kit including Reader Assembly, Interrogation Antenna, 2 Embeddable Nodes, cables and power supply: 1910 grams |
Patents Pending
|
|
Supporting Documentation
FAQ's
|
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.
How To Order
For individual components, additional system configurations, or quantity discounts,
please contact sales@microstrain.com
or call 802-862-6629.
Lead Time
Standard Lead Time for shipping is one week. In the event that longer lead times
are anticipated, MicroStrain® will contact the buyer. Credit cards are billed on
the date the order is shipped.
|
|
|
|
