Wireless Power Transfer (WREL) - Interference for a 60W Lightbulb @uwsensor

uwsensor The Sensor Systems Research Group (http://sensor.cs.washington.edu/) from the University of Washington presents a demonstration of the WREL system. In this video, we demonstrate some of the features of this wireless power system by lighting a 60W light bulb as the distance between the transmitting and receiving resonators changes. It is shown that the system is not affected by extraneous objects interfering with the medium between the transmitting and receiving resonators. For more information, please visit: http://sensor.cs.washington.edu/

updated 12 years ago

Wireless Power Transfer (WREL) - Interference for a 60W Lightbulb

uwsensor 2012-05-03 | The Sensor Systems Research Group (http://sensor.cs.washington.edu/) from the University of Washington presents a demonstration of the WREL system. In this video, we demonstrate some of the features of this wireless power system by lighting a 60W light bulb as the distance between the transmitting and receiving resonators changes. It is shown that the system is not affected by extraneous objects interfering with the medium between the transmitting and receiving resonators. For more information, please visit: http://sensor.cs.washington.edu/

Wireless Home Identification and Sensing Platform for Energy Reduction (WHISPER) System

uwsensor 2020-07-29 | A demo of our battery-free sensing platform for human occupancy detection.
Sensors: image, microphone + analog filters, temp, humidity, and illuminance
RF: transmitter and receiver radios
Process: Raspberry Pi

Glaze: Overlaying Occupied Spectrum with Downlink IoT Transmissions

uwsensor 2019-10-23 | Glaze: Overlaying Occupied Spectrum with Downlink IoT Transmissions

Analog backscatter for low power video streaming

uwsensor 2017-10-06 | ...

NFC WISP-An open source software defined sensing & display platform

uwsensor 2015-12-09 | NFC is an programmable, sensing and computationally enhanced platform designed to explore new NFC sensing and user interface applications.

This demos show two possible applications use the NFC-WISP:
1 an interactive E-ink display on a battery-free NFC-WISP
2 an temperature & motion data logger & display with wireless charging through NFC.

Have your own idea about using NFC WISP?
See our open source wiki:
http://nfc-wisp.wikispaces.com/home

PR2 Rubiks Cube Demo (Long)

uwsensor 2015-11-07 | A PR2 robot utilizes pretouch optical sensors mounted on its fingertips to help it more accurately manipulate the Rubik's Cube.

PR2 Rubiks Cube Demo (Plain)

uwsensor 2015-11-07 | A PR2 robot utilizes pretouch optical sensors mounted on its fingertips to help it more accurately manipulate the Rubik's Cube.

PR2 Rubiks Cube Demo (Short)

uwsensor 2015-11-07 | A PR2 robot utilizes pretouch optical sensors mounted on its fingertips to help it more accurately manipulate the Rubik's Cube.

Wireless Charging Multiple Devices

uwsensor 2014-10-24 | Wireless power transfer to five devices at different power levels can only be achieved using adaptive techniques, such as adaptive impedance matching. In this video, we demonstrate the differences between non-adaptive techniques and adaptive techniques to wirelessly power five single-cell battery charging devices.

crazycam flight 01

uwsensor 2014-10-21 | Test flight of micro camera on the crazyflie

hamr multicoil

uwsensor 2014-06-02 | Harvard Ambulatory MicroRobot, wirelessly powered. Collaboration between UW Sensor Systems Lab and Harvard MicroRobotics Lab / Wyss Institute.

Ambient RF-powered Display Node

uwsensor 2013-09-05 | This video demonstrates an ambient energy harvesting E-ink display, part of the Wireless Ambient Radio Power (WARP) project.

This work was presented at the International Symposium on Pervasive Displays (PerDis) 2013 by:

Aaron Parks
Bryce Kellogg
Joshua R. Smith

And was funded in part by the Google Faculty Research Award.

http://sensor.cs.washington.edu/

Ambient Backscatter

uwsensor 2013-08-13 | Ambient Backscatter transforms existing wireless signals into both a source of power and a communication medium. It enables two battery-free devices to communicate by backscattering existing wireless signals. Backscatter communication is orders of magnitude more power-efficient than traditional radio communication. Further, since it leverages the ambient RF signals that are already around us, it does not require a dedicated power infrastructure as in RFID.

http://www.washington.edu/news/2013/08/13/wireless-devices-go-battery-free-with-new-communication-technique/

Wirelessly Powered E-ink Display Tag using NFC

uwsensor 2013-07-16 | The NFC-WISP*, a software defined NFC tag platform, was used to develop this E-ink display tag, which can interface with an NFC-enabled smartphone.

Both power and data are delivered to the tag through the inductive link between the tag and the phone. As a demonstration of the capabilities of the display tag, this video introduces a "companion display" for a mobile phone.

This project is a collaboration between labs at the University of Massachusetts Amherst, University of Washington, and Intel Labs. See our publication in ACM Ubicomp 2013, titled "Wirelessly Powered Bistable Display Tags."

*The NFC-WISP is an open source platform, with hardware and firmware freely available to collaborators. Visit http://alansonsample.com/research/NFC-WISP-Eink.html for more information on this project.

Wireless Power Transfer Custom LED Message Fan - WREL UW Sensor Systems

uwsensor 2013-05-31 | University of Washington Sensor Systems Research Group presents a wirelessly powered LED Message Fan using the WREL system.

For more information, please visit http://sensor.cs.washington.edu

RFID-Based Indoor Location Tracking Using Particle Filtering in the UW CSE Building

uwsensor 2012-12-14 | (Video is played in 4x)
update rate: 1 Hz
sensor model: gaissian, variance = 0.7
motion model: velocity model
Annotation:
Red Polygon: tag location (robot footprint)
Small light blue sphere: particles of the particle filters
Large dark blue sphere: observation - RFID tag read events

Concept of Wireless Power Transfer

uwsensor 2012-09-23 | This graphic demonstrates the concept of wireless power transfer. This technology is demonstrated in the Wireless Resonant Energy Link (WREL) and the Free-range Resonant Electrical Energy Delivery System (FREE-D) at the University of Washington Sensor Systems Research Group. For more information, visit http://sensor.cs.washington.edu

Alphawisp UHF RFID musical controller

uwsensor 2012-08-24 | This video shows the "alpha WISP" being used as a simple musical controller. A white RFID reader antenna is visible on the left. On the right, two coffee cups will be visible. Each cup has one RFID antenna with two RFID chips. The two chips are multiplexed to the antenna by inertial switches, which can be thought of as 1 bit accelerometers. When you tip the cup left, a first ID is returned to the reader; when you tip to the right, the other ID is returned to the reader. Since each RFID chip has a unique ID, the reader can distinguish the two cups from one another. Thus each object can function as an "instrument," with its own electronically generated sounds.

Interaction singulation of objects from a pile (example with low texture objects)

uwsensor 2012-06-05 | Interaction with unstructured sets of objects will allow a robot to explore and manipulate novel items in cluttered environments. Interactive singulation is demonstrated for an item arrangement task on a physical robot platform. The robot accumulates evidence of singulated items over multiple interactions with parts of a pile. The proposed interactive singulation method reduces the number of grasp attempt errors that occur with non-singulated piles.
-- This example with low-texture objects of similar color uses an alternative method to register the object clouds before and after the push using a shape-based registration instead of relying on feature correspondences. See further details in the IEEE ICRA 2012 paper "Interactive singulation of objects from a pile" by Chang, Fox, and Smith.

Wireless Power Transfer (WREL) - Auto-tuning and relay resonators

uwsensor 2012-05-03 | The Sensor Systems Research Group (http://sensor.cs.washington.edu/) from the University of Washington presents a demonstration of the WREL system. In this video, we demonstrate some of the features of this wireless power system by lighting a 60W light bulb as the distance between the transmitting and receiving resonators changes. The Auto-Tuning feature is able to keep the lightbulb bright by automatically changing the operating conditions to ensure maximum power transfer delivered to the load. Relay resonators can also be used to extend the range of the wireless power transfer. For more information, please visit: http://sensor.cs.washington.edu/

RFID-Vox: A UHF RFID Digital Theremin

uwsensor 2012-04-16 | The accelerometer feature of the battery-free Wireless Identification and Sensing Platform (WISP) is used to control a MIDI synthesizer in this demonstration.

Interactive singulation of objects from a pile

uwsensor 2011-10-13 | Interaction with unstructured sets of objects will allow a robot to explore and manipulate novel items in cluttered environments. Interactive singulation is demonstrated for an item arrangement task on a physical robot platform. The robot accumulates evidence of singulated items over multiple interactions with parts of a pile. The proposed interactive singulation method reduces the number of grasp attempt errors that occur with non-singulated piles.

Robot, Feed Thyself

uwsensor 2011-10-13 | Our mobile manipulation plaform Marvin feeds itself by "smelling" its food, electricity. Marvin is able to detect the 60Hz emissions from ordinary unmodified electrical outlets, and align its plug with the socket using just this signal. Computer vision is not used. This technique is lighting-independant (it even works in complete darkness), fast, inexpensive.

FREE-D wirelessly powered heart pump (LVAD)

uwsensor 2011-10-11 | Video demonstration of the Free-range Resonant Electrical Energy Delivery (FREE-D) System delivering wireless power to a ventricular assist device (VAD) in the Sensor Systems Research Group at the University of Washington.

For more information, please visit http://sensor.cs.washington.edu/freed

First UHF-powered and read accelerometer system

uwsensor 2011-10-11 | We believe this is the first ever 3 axis accelerometer system that is powered and read by UHF radio waves. Think of the system as a wirelessly powered input device---there is NO battery in the circuitry in the user's hand. An RFID reader (built in to picture frame in the lower right) generates a UHF carrier that the WISP rectifies, and uses to power a microcontroller and 3 axis accelerometer. The microcontroller uses its analog to digital converter to read the accelerometer values, and then transmits the data via backscatter (i.e. modulating the reflection coefficient of its antenna) to the RFID reader.

Seashell Effect Pretouch Sensing for Robotic Grasping

uwsensor 2011-10-11 | In Sensor Systems Lab at University of Washington, we introduces "seashell effect pretouch sensing", and demonstrates application of this new sensing
modality to robot grasp control, and also to robot grasp planning. We explore two primary applications: (1) reactive grasp control and (2)
pretouch-assisted grasp planning on the Willow Garage PR2 robot.

"Pretouch" refers to sensing modalities that are
intermediate in range between tactile sensing and vision.
The novel pretouch technique presented in this paper is
effective on materials that prior pretouch techniques fail
on. Seashell effect pretouch is inspired by the phenomenon
of "hearing the sea" when a seashell is held to the ear, a
phenomenon which depends on shell position. To turn this
effect into a sensor, a cavity and microphone were built
into a robot finger. The sensor detects changes in the
spectrum of ambient noise that occur when the finger
approaches an object. Environmental noise is amplified most
at the cavity's resonant frequency, which changes as the
cavity approaches an object.

What You Think is What You Get

uwsensor 2011-10-10 | What You Think is What You Get: Brain Computer Interfacing for the PR2 Robot.

Video accompany workshop abstract at the IROS 2011 PR2 Workshop.
http://www.willowgarage.com/workshop/2011/iros_pr2_workshop

Adaptive wireless power (WREL)

uwsensor 2011-10-10 | This video illustrates our key contribution to high power, medium range wireless power research. The first segment shows power transfer without adaptation enabled. The second segment shows the system automatically compensating for changes in range and orientation. This gives the WREL system the ability to transfer power with efficiency that does not depend on distance, out to the system's working range.