Abstract One-second settlement of supermarket shopping, "making" diamonds with microwave ovens, robotic coffee makers to pull coffee... On April 17, the 31st Chongqing Youth Science and Technology Innovation Competition ended in Bayu Middle School,...
Supermarket shopping for one second settlement, using microwave oven to "create" diamonds, robotic barista to pull coffee... On April 17, the 31st Chongqing Youth Science and Technology Innovation Competition ended in Bayu Middle School, creative invention of primary and middle school students and science and technology counselors Let the visitors present praise. It is reported that this year's competition has attracted the participation of more than 600,000 primary and secondary school students from 38 districts and counties in the city. It is divided into two sections: youth and science and technology counselors. The youth sector includes youth science and technology innovation competition. (Creating inventions, scientific research papers, robot engineering design), outstanding children's science fantasy painting exhibition, excellent science and technology practice activities exhibition; science and technology counselor section includes science and technology counselor science and education innovation achievement competition and excellent science and technology education program exhibition. After the selection of layers, 242 students created inventions, 127 student research papers, 24 robot ideas, 250 science fiction paintings, 128 excellent practice activities, 379 youth science and technology ideas, 318 teacher science and education innovations and 282 items. The teacher's excellent science and technology education program was shortlisted for the municipal competition.
“We developed a rapid RFID settlement system based on RFID radio frequency identification technology, which can complete commodity settlement in one second.†At the scene, Wu Haozhe, a high school student at Bayu Middle School, said that the entire system includes shopping cart, checkout counter and display screen. The three parts, in which, unlike the shopping carts usually seen in supermarkets, the shopping carts they brought have undergone special modifications, including MCUs, RFID antennas, readers and data transmission modules.
He explained to the reporter that if every item in the supermarket is labeled with an electronic tag, when the customer selects the item into the basket on the shopping cart, the shopping cart can scan the information of the item. After the things are purchased, just click the settlement button, the product information stored by the MCU will be transmitted to the settlement counter through the data transmission module, and the consumption amount will be displayed on the display.
“This not only facilitates customers' shopping, saves the waiting time for checkout, but also helps the supermarket save manpower. The cost of the whole system is only 2,300 yuan.†He revealed that in the future, the system can be further developed, such as in a shopping cart. Joining the supermarket indoor navigation, product promotion, etc., will provide customers with a better shopping experience.
Fan Yi, a high school student from the middle school affiliated to Southwest University, magically created diamonds at home by transforming the microwave oven.
“The quantity of natural diamond is less expensive and it is not conducive to people's use of it.†Fan Youyu said that the technology of synthetic diamond has become a hot spot in scientific research. Because of his strong interest, he also started related research.
He told reporters to add a quartz tube to the microwave oven and use a mechanical pump to control the air pressure in the quartz tube to a low pressure state. Then, a certain proportion of methane and hydrogen are introduced into the quartz tube, and the microwave oven is turned on, and the gas in the quartz tube is chemically reacted to generate diamond particles.
The relevant person in charge of the Municipal Science and Technology Association said that in addition to the first, second and third prizes, six major units including Chongqing University, Southwest University and Chongqing Science Development Foundation also set up special awards to encourage innovation in the form of scholarships. Technology enthusiasts who have achieved outstanding results in the event.
In addition, the competition organizing committee will also recommend 12 excellent projects (innovation results of primary and secondary school students), 30 sci-fi paintings, 10 excellent practical activities, and 30 science and technology teachers' works. In August this year, the Chinese Association for Science and Technology and the Ministry of Education will be The National Youth Science and Technology Innovation Competition held in Shanghai.
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