{"id":464265,"date":"2018-02-02T00:05:00","date_gmt":"2018-02-02T08:05:00","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/?post_type=msr-research-item&p=464265"},"modified":"2019-04-29T16:07:03","modified_gmt":"2019-04-29T23:07:03","slug":"monitoring-led-lights-current-signatures","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/monitoring-led-lights-current-signatures\/","title":{"rendered":"Monitoring LED Lights with Current Signatures"},"content":{"rendered":"

Artificial lighting is a pervasive element in our daily\u00a0lives. Researchers from different communities are investigating\u00a0challenges and opportunities related to artificial lighting but from\u00a0different angles:\u00a0<\/span>energy disaggregation<\/span>, to monitor the status\u00a0of light bulbs in buildings; and\u00a0<\/span>communication<\/span>, to transmit\u00a0information wirelessly. We argue that there is an unexplored\u00a0synergy between these two communities. When a light bulb\u00a0modulates its intensity for\u00a0<\/span>communication<\/span>, it also affects the\u00a0current it draws. This current\u00a0<\/span>signature <\/span>is unique and could\u00a0be used by\u00a0<\/span>energy disaggregation <\/span>methods to identify the lights\u2019\u00a0status. These signatures however will be exposed to interference\u00a0(collisions of signatures) and distortions due to power line effects.\u00a0To overcome these problems, we build upon coding schemes to\u00a0assign interference-resilient signatures, and we develop custom\u00a0hardware to ameliorate distortions introduced by power lines. We\u00a0validate our framework in a proof-of-concept testbed, perform\u00a0simulations to test scalability, and use energy traces from real\u00a0homes to evaluate the impact of other electric loads.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Artificial lighting is a pervasive element in our daily\u00a0lives. Researchers from different communities are investigating\u00a0challenges and opportunities related to artificial lighting but from\u00a0different angles:\u00a0energy disaggregation, to monitor the status\u00a0of light bulbs in buildings; and\u00a0communication, to transmit\u00a0information wirelessly. We argue that there is an unexplored\u00a0synergy between these two communities. When a light bulb\u00a0modulates its intensity for\u00a0communication, […]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","footnotes":""},"msr-content-type":[3],"msr-research-highlight":[],"research-area":[13556,13552,13547],"msr-publication-type":[193716],"msr-product-type":[],"msr-focus-area":[],"msr-platform":[],"msr-download-source":[],"msr-locale":[268875],"msr-post-option":[],"msr-field-of-study":[],"msr-conference":[],"msr-journal":[],"msr-impact-theme":[],"msr-pillar":[],"class_list":["post-464265","msr-research-item","type-msr-research-item","status-publish","hentry","msr-research-area-artificial-intelligence","msr-research-area-hardware-devices","msr-research-area-systems-and-networking","msr-locale-en_us"],"msr_publishername":"","msr_edition":"","msr_affiliation":"","msr_published_date":"2018-4-17","msr_host":"","msr_duration":"","msr_version":"","msr_speaker":"","msr_other_contributors":"","msr_booktitle":"","msr_pages_string":"","msr_chapter":"","msr_isbn":"","msr_journal":"","msr_volume":"","msr_number":"","msr_editors":"","msr_series":"","msr_issue":"","msr_organization":"","msr_how_published":"","msr_notes":"","msr_highlight_text":"","msr_release_tracker_id":"","msr_original_fields_of_study":"","msr_download_urls":"","msr_external_url":"","msr_secondary_video_url":"","msr_longbiography":"","msr_microsoftintellectualproperty":1,"msr_main_download":"464271","msr_publicationurl":"","msr_doi":"","msr_publication_uploader":[{"type":"file","viewUrl":"https:\/\/www.microsoft.com\/en-us\/research\/uploads\/prod\/2018\/02\/Akshay_INFOCOM.pdf","id":"464271","title":"Akshay_INFOCOM","label_id":"243109","label":0}],"msr_related_uploader":"","msr_attachments":[],"msr-author-ordering":[{"type":"text","value":"Johnny Verhoeff","user_id":0,"rest_url":false},{"type":"user_nicename","value":"Akshay Uttama Nambi S. 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