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DateDate: 16-03-2019, 06:35

Engineers from the USA, China and Sweden created a drone capable of using branches and other elongated objects as a footprint.
An article describing the development and experiments published in the journal Science Robotics.
After attaching the drone to an object, it can turn off one or more electric motors with screws, and thus spend less energy while continuing to fulfill its mission — for example, to make observations using a camera.
In most cases, multikopter is used for observation and other operations, during which the device hangs at a relatively high altitude, difficult for people to access. But the duration of the flight of modern electric multicopters is several tens of minutes (usually about half an hour), and hybrid drones working on an internal combustion engine-generator have a smaller mass of payload. As a rule, engineers solve this problem by increasing the battery capacity.
The group led by Fu Zhang (Fu Zhang) from the University of Hong Kong decided to increase the length of the drone's stay at height, reducing energy consumption of the main consumers in multicopter - electric motors. Since under normal conditions, reducing energy consumption will lead to loss of thrust and the fall of the drone, the developers used a different approach, which is used by birds and other flying animals. They offered to equip the drone with "legs", allowing the device to hook on the branches, edges of buildings and other objects, and use them as a support, allowing you to turn off one or more engines.
The design of the "legs" does not require the creation of a special drone and allows you to attach it to the bottom of the body of most serial multikopter. It consists of a base on which three arcuate plates are fixed. At their ends, various devices are fixed, allowing the drone to partially or completely fix itself on other objects: two identical hooks on two legs on one side, and two stops. Two hooks allow the drone to cling to the thin walls and completely turn off the engines. The stops are necessary for the device to stabilize its position and to disconnect part of the motors with screws located above the stop. In addition, the drone can be fixed on oblong objects, such as a branch of a tree, moving the legs around them. After that, he can turn off all the motors and turn over.
The developers showed the advantage of their approach by measuring the energy costs needed by the drone to maintain balance and keep themselves in one place. In case the drone grabs a branch or hooks on an object with a hook, it can completely turn off all the rotors. In other cases, he will still spend energy, but much less. For example, when using an object as a support, it can turn off two engines or leave everything turned on, but significantly reduce the thrust of the screws.
Experiments have shown that the design makes it possible to reduce the expenditure of energy for maintaining the drone several times as compared with the usual air suspension. In addition, it allows you to reduce the oscillations of the drone in hand, which can be useful when using it for shooting.

DateDate: 15-03-2019, 05:54

While many star mothers promote the breastfeeding needed for each baby, entrepreneurs are trying to earn. This writes Realist.
So, the Japanese company Dentsu presented at the SXSW festival in Austin, Texas, an artificial “chest” for fathers. Device that looks like a female breast, is called the assistant to the nursing father.
 
“Japanese children sleep the least in the world. We want to solve the problem and help fathers more actively participate in the lives of their children, ”a company representative told reporters.
Artificial breast is equipped with a tank for milk or infant formula, teat, as well as a special device that monitors the process of feeding the child and transmits information to the smartphone of the parent.
It is reported that Dentsu has not yet released the product to the market, but is going to do it. At the same time, journalists are wondering whether it will remind buyers that this device is still not able to replace natural breastfeeding.
As previously reported, “FACTS”, not everything is smooth with the breasts and in women: for example, one Australian has increased the breast and paid for it: it turned out that the woman was poisoned by silicone implants. Another mother became a victim of a doctor after breast surgery: an anesthesiologist raped a patient right in a hospital bed. Therefore, it is possible that an artificial breast has a future.

DateDate: 14-03-2019, 05:56

Microsoft выпустил новую версию приложения Seeing AI, которое с помощью технологии компьютерного зрения позволит слепым и слабовидящим людям «просматривать» фотографии на смартфоне или компьютере. Об этом пишет Engadget.

Для запуска приложения пользователь должен коснуться изображения на экране. Система компьютерного зрения распознает детали изображения и озвучит их через динамик или наушники.

С 13 марта Seeing AI доступно на устройствах с операционной системой iOS, в том числе и на iPad. Приложение бесплатно и доступно для скачивания в App Store и Google Play.

Источник: hightech.fm


DateDate: 13-03-2019, 05:56
The Israeli company has developed an autonomous drone that can pick fruit or be used for thinning and pruning in apple and orange orchards.
According to an article published by CTech, Tevel Aerobotics Technologies last year completed a working prototype of a drone. The drone will hit the market by 2020.
Company drones can also determine the type, defects and quality of fruits.
Although they only work during the day, the company told Ctech that they are working to provide night vision opportunities for the drone.


DateDate: 12-03-2019, 06:11

A Japanese and American company has entered into a partnership agreement with NASA to try out a new UAV on a solar battery. Perhaps in the near future the army of such drones will deliver even to remote corners of the Earth!
Huge UAV for high-altitude flights: carrying Wi-Fi
In the modern world there is a race, the main goal of which is to create a fleet of flying UAVs. Wi-Fi signal and permanently solve the problem with internet connection. However, Google and Facebook have already abandoned this venture. NASA decided to implement this idea.
AeroEnvironment was named Hawk 30, that is, Hawk-30. This is a relatively massive unit, equipped with 10 engines. His tests are conducted by the Armstrong Research Center, one of the divisions of NASA.
The Hawk differs from its predecessors not only in design, but also in potential. In 2001, the previous model, Helios, reached a height of over 28 kilometers - it was a real machine for the development of solar-powered aircraft. The competition was developed in Facebook under the name “Aquila”, which was comparable to that of the Boeing 737, but in 2017 the project was quickly turned off. Airbus is not only an opportunity, but also all new industry giants. Now, AeroEnvironment had to lay out about 800,000 NASA for overseeing and providing overground support for the upcoming tests scheduled for the end of June of this year.