A team from the University of Twente and the Amsterdam University of Applied Sciences have published a paper demonstrating gross overbillings by smart energy meters, ranging from -32% to +582% of actual power consumption.
Ironically, the overbilling is largely an artifact of power-saving features, which introduce line-noise that confuses the meters.
Overall, five of the nine smart meters gave out readings much higher than the actual amount of power consumed, while two gave lower readings.
The greatest inaccuracies were seen when researchers combined dimmers with energy saving light bulbs and LED bulbs.
After finishing their lab experiment, researchers dismantled the smart meters to understand the problem. Following their efforts, the three-man research team discovered that smart meters which gave abnormally high readings used a Rogowski Coil in their setup, while the smart meters that gave out low readings used Hall effect-based sensors.
Static energy meter errors caused by conducted electromagnetic interference
[Frank Leferink, Cees Keyer and Anton Melentjev/IEEE Electromagnetic Compatibility](Sci-Hub mirror)
Millions of Smart Meters May Over-Inflate Readings by up to 600%
[Catalin Cimpanu/Bleeping Computer]
Itrack and Protrack are commercial devices for tracking fleets of commercial vehicles; they can be configured to allow for remote killswitching of the cars' engines, presumably as a theft-prevention measure.
Researchers from KU Leuven have published a paper showing how they can create a 40cm x 40cm "patch" that fools a convoluted neural network classifier that is otherwise a good tool for identifying humans into thinking that a person is not a person -- something that could be used to defeat AI-based security camera systems. […]
Rudy Giuliani: “nothing wrong with taking information from Russians.”
From your apartment door to your bike lock, it’s not uncommon to carry a number of different keys on your keyring, but that doesn’t make it any more bearable when you’re fussing to find the right one or deal with the infamous pocket bulge. The KeySmart Pro’s smart design cuts down on key clutter and […]
Happy DNA Day! April 25 is a day to recognize deoxyribonucleic acid – better known as the molecule that holds the code to our entire genetic makeup. What better way to celebrate than with a complete ancestry test that’s about more than just satisfying idle curiosity about your family tree? The lab techs at Vitagene use […]
For musicians, clubgoers or anyone in the thick of a loud environment, earplugs aren’t just an option. If you plan on keeping your hearing through sustained exposure to levels over 85 decibels (roughly the sound of a blender), they’re a must. The good news is, most earplugs will muffle the sound. The bad news is, […]