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EH-Link - 2.4 GHz Energy Harvesting Wireless Node

2.4 GHz wireless sensor networks

MicroStrain's wireless sensor networks enable simultaneous, high-speed sensing and data acquisition from multiple wireless strain gauges, accelerometers, temperature, and millivolt inputs. The range of wireless sensing systems is ideal for both small scale applications requiring a few sensor nodes and large scale applications requiring hundreds of sensor nodes. OEM options are available for embedded applications.

Common features and benefits

IEEE 802.15.4 DSSS nodes compatible worldwide
Streaming rates up to 4KHz from multiple nodes
Datalogging rates up to 2048 Hz
On-board memory stores 1,000,000 measurements
Programmable communication range from 70m to 2,000m
Low power consumption for extended use
Internal rechargeable battery

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EH-Link 2.4 GHz Energy Harvesting Wireless Node

Thermoelectric Generators - TEG

E-Harvester for vibration energy

The EH-Link™ wireless node is a self powered sensor, harvesting energy from ambient energy sources. EH-Link™ is compatible with a wide range of generator types, including piezoelectric, electrodynamic generators, and thermoelectric generators.

In applications with vibrating machinery or structures under load, the EH-Link™ can be self powered from a tiny generator. The EH-Link™ can operate from high impedance AC or DC sources, in the range of 3.0 V to 20 V.

The ultralow voltage (ULV) input of the EH-Link™ can be powered from Peltier Thermoelectric Generators (TEGs), or thermopiles. The EH-Link™ can operate from as low as 0.02 Vdc and up to 0.6 Vdc making the node operable from temperature differentials below 5 ˚C with TEGs. It can also operate in ambient light levels well below that required for solar cell use with traditional electronics, due to the ultra low input voltage converter.

Sophisticated energy conversion and conservation methods allow the EH-Link™ to operate from a fraction of the power normally required for a wireless sensor node, providing seamless operation within the network, when used in environments where only low ambient energy is available.

The module is versatile and is designed to operate as part of MicroStrain’s 802.15.4 wireless sensor network. Each node in the wireless network is assigned a unique 16 bit address or an optional 96 bit EPC code for self powered active sensor-RFID applications.

The Pioneer kit includes EH-Link^TM and a selection of harvesters, enabling users to set up an EH demo in minutes.

Features & Benefits

no batteries required, EH-Link™ is self powered from high impedance AC and DC sources or low voltage DC sources as low as 20 mV
out of the box wireless sensing capability for most analog sensors
2.4 GHz direct sequence spread spectrum IEEE 802.15.4 radio operates in license free band world wide
communications range up to 70 m line of sight
supports auxiliary storage options such as supercapacitors or rechargeable thin film batteries (TFB)
supports multiple nodes at sample rates up to 2048 Hz

Sensor Support