Multimedia Content Identification Through Smart Meter Power Usage Profiles
Multimedia Content Identification Through Smart Meter Power Usage Profiles
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发表时间：
2012
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通讯作者：
Ulrich Greveler;Benjamin Justus;Dennis Löhr
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作者：
Ulrich Greveler;Benjamin Justus;Dennis Löhr
.在德国（以及欧洲其他地区和美国）的整个电网中安装了先进的计量装置（智能电表）。不幸的是，智能电表能够成为监控客户行为的监控设备。这导致了前所未有的对消费者隐私的侵犯。传输至公用事业公司的高分辨率能耗数据允许对消费者家中的设备进行侵入式识别和监控（例如：例如，在一个实施例中，电视机、冰箱、烤面包机和烤箱）。我们的研究表明，在0 . 5 s-1采样率确实可以显示家庭中电视机正在显示的频道。还可以识别在CRT 1、等离子体显示TV或LCD 2电视机上显示的具有动态背光的功率配置文件中的（受版权保护的）视听内容。我们的测试结果表明，在不受其他设备严重干扰的情况下连续观看5分钟就足以识别内容。我们的调查还显示，智能电表通过互联网传输的数据是未签名和未加密的。我们的测试是在德国北莱茵-威斯特法伦州的一个私人住宅中进行的，测试对象是一个密封的、可操作的智能电表。其他电视机的参数是通过在大学实验室部署的相同智能仪表获得的。
. Advanced metering devices (smart meters) are being installed throughout electric networks in Germany (as well as in other parts of Europe and in the United States). Unfortunately, smart meters are able to become surveillance devices that monitor the behavior of the customers. This leads to unprecedented invasions of consumer privacy. The high-resolution energy consumption data which are transmitted to the utility company allow intrusive identification and monitoring of equipment within consumers’ homes (e. g., TV set, refrigerator, toaster, and oven). Our research shows that the analysis of the household’s electricity usage profile at a 0 . 5 s − 1 sample rate does reveal what channel the TV set in the household was displaying. It is also possible to identify (copyright-protected) audiovisual content in the power profile that is displayed on a CRT 1 , a Plasma display TV or a LCD 2 television set with dynamic backlighting. Our test results indicate that a 5 minutes-chunk of consecutive viewing without major interference by other appliances is sufficient to identify the content. Our investigation also reveals that the data transmitted via the Internet by the smart meter are unsigned and unencrypted. Our tests were performed on a sealed, operational smart meter used for electricity metering in a private home in North Rhine-Westphalia, Germany. Parameters for other television sets were obtained with an identical smart meter deployed in a university lab.