The hottest magic sensor blinks to control househo

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Magic sensor "blinks" to control household appliances

due to the imperfect evaluation system of domestic instruments

imagine, blink your eyes and turn on the light; Blink again, the light turns off Chinese scientists recently reported that they have designed a new type of sensor that can be attached to glasses to detect blinking movements, so that daily tasks such as switching on and off household appliances in the blink of an eye become a reality

"this technology can be considered to have a 'third hand'." Professor huchenguo of Chongqing University, one of the research leaders, told Xinhua news agency. She said that if normal people's hands are occupied, this new human-computer interaction method can be used to control the electronic devices around them. Patients who lose their ability to move due to diseases such as frostbite can also benefit from it. In the future, we will explore installing this sensor in different parts of the human body to try to control the smart machine. The reed relay responsible for counting signal input is damaged, resulting in the non counting display of people

in addition to Hu chenguo, Pu Xianjie and Guo Hengyu of Chongqing University and Professor Wang Zhonglin of the Beijing Institute of nano energy of the Chinese Academy of Sciences participated in the research. The paper was published in the new issue of the American Journal progress of science

according to Hu chenguo, the traditional human-computer interaction system mainly detects extremely weak body surface bioelectric signals when detecting blinking, and they use the popular friction nano power generation technology in recent years to design a new sensor to detect the tiny movement of the skin near the temple caused by blinking, which is not only highly sensitive, Compared with traditional detection methods, it also has better durability and stability

she explained that the sensor is composed of two layers of thin films, with a certain interval between them. The sensor is installed on the leg of the glasses and contacts the skin near the corner of the eye. When the eyes blink, the skin around the corners of the eyes will produce small movement, which will make the two layers of film contact; After blinking, the inefficient production capacity gradually withdraws, and the eyes open, the two layers of film will separate. By preparing a conductive layer on the back of the film, the pulse electrical signal output corresponding to blinking can be generated

the test results show that the output strength of the pulse electrical signal is directly related to the strength and speed of blinking. Compared with conscious blinking, unconscious blinking is relatively mild and the pulse signal intensity is small, so the two are easier to distinguish

this design can not only control the switch of electronic equipment by blinking, but also input on the human-computer interaction interface of virtual typing, such as typing English words and space symbols to form sentences. Due to the extremely high sensitivity and stability of the sensor, the accuracy of completing these tasks is very high

Hu chenguo said that in the future, he plans to further improve the blink input method system, and strive to input arbitrary sentences in this way, including switching between Chinese and English, inputting numbers and punctuation marks, and automatically associating common phrases with input methods, just as people can do on general computer keyboards now. In addition, researchers also hope to realize more complex applications such as remote control intelligent devices through the combination of two eye blinking

Hu chenguo pointed out that the human-computer interaction of sensory control can establish a new natural communication path between people and external devices, which is conducive to improving people's quality of life, and this work "makes it possible to control electronic devices by blinking from the laboratory to our daily life"

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