Tag Archives: research

Noise-canceling headphone concept creates sound bubble for clearer conversations

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When you need to have a serious conversation with someone or a small group, you probably need to find a place that has a private room or where there will only be a few people. But for times when you have no choice but to have it in a not so quiet place, then you probably wish you had a cone of silence so you can drown out other people’s voices while still being able to hear what your companions are saying.

Designers: Tuochao Chen, Malek Itani, Sefik Emre Eskimez

Well that might soon come true if this concept by the engineers at the University of Washington becomes a reality. The headphones is powered by AI and has the power to filter out the noise from as far as a few feet away so you’ll still be able to hear the conversation around you. It creates an imaginary “sound bubble” so you can focus on what you need to hear.

The noise-canceling headphones has six microphones on its headband, with a small onboard computer running a neural network. It will be able to analyze the distance from various sound sources around you. The ones that are farther away will be filtered out while the sounds closer to you will be amplified. If they come in within your imaginary bubble, you’ll be able to hear them clearly too.

It’s an interesting device to have especially if you have a lot of meetings or conversations outside. It would look strange though to have a group of people talking and all wearing headphones. They are working on smaller versions like earbuds or even hearing aids so that should work better.

The post Noise-canceling headphone concept creates sound bubble for clearer conversations first appeared on Yanko Design.

Morphing wheel research can ride over uneven surfaces and obstacles

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Wheelchairs and mobile robots are useful (and sometimes necessary) tools for those who need them but because of the way their wheels are built, there are a lot of limitations as to where they can go. Uneven surfaces and high obstacle areas can sometimes be unaccessible for them. Researchers have been trying to reinvent the wheel so to speak by coming up with a wheel that can adjust to different terrains. This latest one from Korean researchers may just be the most promising.

Designers: Jae-Young Lee, Seongji Han, Munyu Kim, Yong-Sin Seo, Jongwoo Park, Dong Il Park, Chanhun Park, Hyunuk Seo, Joonho Lee, Hwi-Su Kim, Jeongae Bak, Hugo Rodrigue, Jin-Gyun Kim, Joono Cheong, Sung-Hyuk Song

This Variable-stiffness–morphing wheel that they are testing out is actually inspired by the surface tension of a droplet of liquid. The main thing about this experimental wheel is that it is able to ride through uneven terrain and go through obstacles while still keeping what makes a wheel a wheel when driving through flat ground. You’ll have to go back to your physics notes to fully understand but the basic idea is to create an imbalance in the cohesive forces between molecules.

This deformable wheel that they’re developing has a “smart chain structure” which is a chain of blocks outside the wheel that is connected by wire spokes to opposite sides of the central hub. From the demo video that they showed, the wheel is able to deform and adapt to the surface so it could travel over the obstacles it encounters. The two-wheeled wheelchair they used was able to ride through grassy ground with uneven surfaces. There was not video of the four-wheeled vehicle but they said it was able to drive over rocks and large steps.

It’s still early stages in this research so there are things they need to improve on. For example, dust and particles are able to get through to the smart chain blocks so the wheels are easily damaged. And the video of the wheelchair shows there’s an extreme forward tilt to the chair part so it’s not that safe for passengers yet. But this morphing wheel is promising and may eventually be useful for wheelchairs, mobile robots, and other uses.

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Drone quadcopter concept grips power lines to recharge its batteries

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Although they may be a bit controversial due to privacy and safety concerns, it’s hard to argue that drones, specifically quadcopter models, have introduced big changes in modern life. Taking photos and recording videos can now have some dramatic flair, and deliveries of food and supplies can be made to harder-to-reach places. What these often astounding use cases don’t always say, however, is that drones have very short operating times due to their small batteries. That means they can only fly over short distances with light payloads unless they stop and land somewhere for a recharge. This research concept tries to think of a different system that takes advantage of one of the most ubiquitous power sources found in most urban areas: heavy-duty power lines.

Designers: Viet Duong Hoang, Frederik Falk Nyboe, Nicolaj Haarhøj Malle, Emad Ebeid

Given our current battery technologies, drones have no choice but to pack light. This means most drones have an operating time of around 1 hour or so, and that’s only if they’re not struggling to keep afloat with a heavy load. This drastically shortens the travel time and distance of drones unless they find a way to charge en route, almost like how a car refuels or charges along its way. That, however, would require creating “charging stations” for these drones, which might not always be possible or even economical.

Scientists from the University of Southern Denmark decided to design around a power source that is always there but isn’t solar-powered, which would be too slow and too little for the drone’s use. Instead, the drones clamp onto power lines, the very same thick cables that deliver power from one pole to another. When the drone senses that its battery is too low for comfort, it flies to the nearest power line, flies under a line, and then slowly raises itself until its mechanism grips the line. From there, it uses induction to draw electricity from the line to power that gripping mechanism as well as charge the drone hanging from it.

To test this theory, a drone that was used to inspect power lines was outfitted with custom-made sensors and a gripper before being set to its task without human intervention. The drone recharged itself five times using this method, resulting in an impressive two-hour operation. Although the task put the drone within the immediate vicinity of the electrical line that it needed to recharge, it’s not hard to imagine how delivery drones would likewise have access to nearby lines for the same purpose.

Then again, this recharging system might not be the best solution either, at least given the technologies we have today. Fully autonomous drones are still generally considered to be unreliable, so you can only imagine the fear of one of these flying robots meeting an accident on that power line and taking down a whole block’s electricity. Of course, the better solution would be to have public charging stations like those for cars, but we’re still far from being a drone-centric civilization to warrant such infrastructure.

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Smart earrings can read your temperature, paving the way for new wearables

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When people talk about wearables or wearable tech, they are mostly thinking of smartwatches and fitness trackers, basically those that are worn on your wrist. Technically speaking, however, any kind of technology that can be worn on your body would qualify as wearables, hence the name, but we have been restrained by the limits of current technologies and design trends. Fortunately, it isn’t a dead end yet, and smart rings are starting to become a viable alternative, allowing some people to still keep track of their health while finally being able to wear their favorite classic watches again. These rings reveal the potential of jewelry that could deliver those same features while allowing you to maintain your fashion sense, like this earring that can read your body temperature, something that is still uncommon even on smartwatches today.

Designers: Qiuyue (Shirley) Xue, Yujia (Nancy) Liu, Joseph Breda, Vikram Iyer, Shwetak Patel, Mastafa Springston (University of Washington)

Our bodies are a treasure trove of data, depending on which part you are observing. Smartwatches try to shed light on our health by literally shining light through the skin on our wrists and down to blood vessels. Smart rings largely do the same, though on your finger, of course. While much of your body’s state can be calculated from these areas, some body parts give more accurate biometrics than others. There might still be some debate about it, but some researchers believe that the ears, particularly our earlobes, are a better source for that kind of information.

That’s the medical foundation that the Thermal Earrings are based on, a research project that is attempting to create a new wearable that is both functional and potentially fashionable, especially for women. The device uses two sensors, one that magnetically clips to the earlobe and measures body temperature, while another dangles an inch below it to measure room temperature. Comparing data from these two sources yields a more accurate body temperature reading compared to smartwatches that can’t properly differentiate ambient temperature. This accurate reading is crucial not just for knowing your body’s temperature but, for women, also for keeping track of their ovulation and periods.

The Thermal Earrings’ diminutive design presents both a challenge and an opportunity. It uses up very little power and uses low-power Bluetooth to transmit its data to a paired smartphone. In theory, it can be charged with solar or kinetic energy, but implementing a charging system for that is proving to be a bit tricky. And since only one earring is enough to read the wearer’s body temperature, it raises the question of what the other earring would do. Should it be a simple non-smart decoy to pair with the smart earring or can it also be used to read some other biometric as well?

More importantly, however, the Thermal Earrings open the doors to another kind of wearable accessory. Although the current prototype is largely limited by the electronics it uses, it can already be customized with charms and gemstones. More research into different materials and forms can hopefully lead to more chic styles, ones that ladies won’t be embarrassed to be seen wearing.

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