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Author: William Healy

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1. Power Supply Issues for Wireless Sensor Networks: A Review
Published: 3/1/2014
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: Wireless sensor networks (WSNs) have enabled numerous embedded wireless applications in different areas such as military/battlefield, environmental monitoring, and intelligent building systems. They consist of a large number of nodes that need to ope ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911922

2. Experimental Study of the Thermal Impacts on Wireless Sensor Batteries
Published: 4/10/2013
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: Wireless sensor networks are being considered for application within buildings to control various equipment in different working environments. As wireless sensors are powered by commercially available batteries, battery performance will directly affe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913358

3. Impacts of 2.4 GHz ISM Band Interference on IEEE 802.15.4 Wireless Sensor Network Reliability in Buildings
Published: 9/9/2012
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: With the recent emergence of standards, wireless solutions are ready to be deployed in building automation networks. IEEE 802.15.4 is a standard for short range wireless networks. Its major applications fields are home and building automation, as wel ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906735

4. Battery Discharge Characteristics of Wireless Sensors in Building Applications
Published: 4/11/2012
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: Sensor nodes in wireless networks often use batteries as their source of energy, but replacing or recharging exhausted batteries in a deployed network can be difficult and costly. Therefore, prolonging battery life becomes a principal objective ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910723

5. Input-Output Approach to Predicting the Energy Efficiency of Residential Water Heaters ‹ Testing of Gas Tankless and Electric Storage Water Heaters
Published: 11/1/2011
Authors: William M Healy, Tania Ullah, John F Roller
Abstract: A study was conducted to evaluate the potential for using a linear relationship between the power input to a residential water heater and the output of thermal energy in hot water for rating the unit‰s energy efficiency. This approach has the potent ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906851

6. Performance Measurements and Analysis of Low Data Rate Wireless Communication Under Interference Sources in Buildings
Published: 10/13/2010
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: Interference from collocated networks operating over the same frequency range becomes an increasingly severe problem as the number of networks overlapping geographically increases within commercial and residential buildings. This paper aims to highli ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905715

7. An Experimental Study of Interference Impacts on ZigBee-based Wireless Communications Inside Buildings
Published: 8/7/2010
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: ZigBee is a wireless technology developed as an open global standard to address the unique needs of low-cost, low-power wireless sensor networks. This standard takes full advantages of the IEEE 802.15.4 physical radio specification and operates in un ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905714

8. ZigBee-Wireless Mesh Networks for Building Automation and Control
Published: 4/12/2010
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: ZigBee is a wireless technology developed as an open global standard to address the unique needs of low-cost low-power wireless sensor networks. This standard takes full advantages of the IEEE 802.15.4 physical radio specification and operates in unl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905069

9. Wireless Sensor Network Performance Metrics for Building Applications
Published: 4/1/2010
Authors: Won Suk Jang, William M Healy
Abstract: Metrics are investigated to help assess the performance of wireless sensors in buildings. Wireless sensor networks present tremendous opportunities for energy savings and improvement in occupant comfort in buildings by making data about conditions a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901761

10. Measurement Science Roadmap for Net-Zero Energy Buildings
Series: Technical Note (NIST TN)
Report Number: 1660
Published: 3/18/2010
Authors: Joan Pellegrino, Arthur Hunter Fanney, Andrew Keith Persily, Piotr A Domanski, William M Healy, Steven T Bushby
Abstract: Buildings account for nearly a third of the world s energy use today, and this share is expected to rise along with population growth and levels of prosperity. In the United States, residential and commercial buildings consume about 40% of primary en ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905024



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