Smart Sweatband Senses Dehydration

It’s not easy to tell if you’re dehydrated. Nearly 75 percent of Americans are chronically dehydrated, putting many people at a health risk.

Now, a smart sweatband could tell you when you exercise is bordering on dangerous. By measuring the chemicals in your sweat, this sensor can alert you of dangerous situations by linking to your smartphone in the first fully integrated electronic system that can provide continuous, noninvasive monitoring of multiple biochemical in perspiration.

The device has the potential to measure more than perspiration, with goals of preforming population-level studies for medical applications.

Uphill Battle for Electric Cars

With plunging oil prices, it is proving to be more difficult than ever to entice buyers into purchasing an electric vehicle. While the low oil prices may be good for consumers’ gas tanks, the transportation sector continues to account for 27 percent of the United States’ greenhouse gas emissions.

The question then arises of how electric car manufacturers can steer folks back toward electric vehicles and away from gas-guzzling cars?

(MORE: Read Interface: PV, EV, and Your Home)

Impact of falling oil prices

“It definitely makes the transition to sustainable energy more difficult,” said Elon Musk, Tesla CEO, at a business conference in Hong Kong about the impact of the free-falling oil prices.

Tesla rose to prominence in 2003 when oil prices soared, making electric vehicles all the more tempting. With oil prices continually on the decline, it’s now up to companies like Tesla to compel buyers and stress the importance of transitioning toward cleaner vehicles.

New features for electric cars

For companies like Tesla, that means developing things like autonomous cars with “summon” features – allowing the user to call their car just like a pet. Even aesthetic aspects have become more important, with Tesla focusing on futuristic designs.

“What we’re aspiring to do is to make the cars so compelling that even with lower gas prices, it’s still the car you want to buy,” Musk said.

(more…)

Car sensor technology

Is your Uber driver going too fast? Soon, you’ll be able to prove it.
Image: Noel Tock under Creative Commons license

Since 2009, Uber has taken off all around the world as the premier ride-sharing company. Now, your Uber experience may improve thanks to the company’s application of sensor technology via each driver’s smartphone.

A typical Uber experience asks the driver and passenger to rate each other after each drive. If the mark comes in unusually low, Uber can now investigate your claims by examining the driver’s journey with data pertaining to speed and erratic driving. The company aims to collect this data from the gyrometer in the driver’s phone and data from GPS and accelerometers.

This from Uber:

Gyrometers in phones can measure small movements, while GPS and accelerometers show how often a vehicle starts and stops, as well as its overall speed. If a rider complains that a driver accelerated too fast and broke too hard, we can review that trip using data. If the feedback is accurate, then we can get in touch with the driver.

Read the full article.

An array of different sensory devices are used in your smartphone, allowing our phones to follow our commands and functions seamlessly. From the sensors in your screen that recognize touch to the voltage and current measurement sensors for battery utilization optimization, sensors are constantly responding to the ever-increasing demand for faster, cheaper, smaller, and more sensitive means to monitor the world around us.

Now these sensor technologies could help produce safer conditions on the road. If gyrometer results show that drivers are moving their phones while driving, Uber may offer mounts. If the accelerators pick up constant speeding conditions, Uber is ready to tell their drivers to curb their enthusiasm.

Tagged

Graphene Simplifies Ice Removal

Graphene ice removal

Through a nanoribbon-infused epoxy, researchers were able to remove ice through Joule heating.
Image: Rice University

Graphene, better known as the wonder material, has seemingly limitless possibilities. From fuel cells to night-vision to hearing, there aren’t many areas that graphene hasn’t touched. Now, researchers from Rice University and transforming graphene for uses in air travel safety.

James Tour, past ECS lecturer and molecular electronics pioneer, has led a team in developing a thin coating of graphene nanoribbons to act as a real-time de-icer for aircrafts, wind turbines, and other surfaces exposed to winter weather.

(MORE: Read “High-Density Storage, 100 Times Less Energy“)

Through electrothermal heat, the graphene nanoribbons melted centimeter-thick ice on a static helicopter rotor blade in a -4° Fahrenheit environment.

This from Rice University:

The nanoribbons produced commercially by unzipping nanotubes, a process also invented at Rice, are highly conductive. Rather than trying to produce large sheets of expensive graphene, the lab determined years ago that nanoribbons in composites would interconnect and conduct electricity across the material with much lower loadings than traditionally needed.

Read the full article.

“Applying this composite to wings could save time and money at airports where the glycol-based chemicals now used to de-ice aircraft are also an environmental concern,” Tour said.

The coating may also protect aircrafts from lightning strikes and provide and extra layer of electromagnetic shielding.

  • Page 19 of 19