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TV without wires

17.01.2012

The Chinese company "Haier" began to produce a TV without wires. The system, however, was not invented in China, but in the USA.

A flat screen is installed anywhere or hung on a wall, and electricity and a picture are supplied to it through two induction coils from a separate housing with all electronics, connected to the antenna and the network and standing one or two meters from the screen, for example, under the table.

The dimensions and other characteristics of the coils in the screen and a separate television receiver are selected so that they enter into resonance with each other. The transmission efficiency of electricity from a distance of one meter is 95%.

Sales in Europe are due to start in 2012, but it's not yet clear how much buyers will enjoy having two separate units instead of a fairly compact conventional LCD flat screen TV.

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Electronic bra monitors the figure 13.12.2013

American researchers built devices into the bra that can take an ECG and measure the electrical conductivity of the skin, which changes with sweat (which can indicate excitement), as well as an accelerometer and a gyroscope. The development allows you to track the mood of a woman using sensors built into the bra, and sends a notification to a smartphone if a woman is diagnosed with stress and there is a danger of overeating.

Erin Carroll of the University of Rochester, as well as her colleagues from the University of Southampton and Microsoft, initially conducted a study in which they monitored the nutrition and mood of 12 people (10 women and 2 men) using a mobile application. It was found that half of the subjects were prone to overeating when stressed, but timely reminders of stress-reducing techniques (such as breathing exercises) helped them to control themselves.

After that, it was proposed to integrate devices for measuring the electrical conductivity of the skin and electrocardiography into the bra. As you know, the electrical conductivity of the skin changes when a person sweats, and this may indicate excitement. An accelerometer and a gyroscope were also built into the bra. By monitoring a woman's mood, the 'smart' bra sends notifications to her smartphone about the dangers of overeating.

The development was tested by 4 women. During the experiment, they had to report data on their emotions to scientists for 4-6 hours a day for 4 days. The researchers compared these data with instrument readings, after which they created an algorithm that recognizes the excitement of a woman with an accuracy of 75%.

The use of a bra during the experiment was due to the fact that it is possible to install a device for recording an ECG near the heart. As for attempts to create similar clothes for men, they turned out to be associated with certain difficulties.

Original health monitoring devices that can be worn on the body have recently become increasingly popular. For example, in October, a bra appeared that sends a message to Twitter every time it is unbuttoned. The developers believe that this should encourage women to get tested more often for breast cancer.

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