With the popularization of STEM education in Hong Kong, coding has gradually become the "universal language" of the new generation of students, and they have even developed new products to help disadvantaged groups.
There is a fund to hold the first innovation and technology exhibition, and the winning works will be selected from the scientific and technological creative works of the primary and secondary school student groups. There are also girls' middle school teams shortlisted in the high school group to develop an artificial intelligence system, using computer AI to answer questions and smart carts to help the visually impaired. Looking for suitable products in the supermarket, there are also junior high school group shortlisted student groups, using microcomputer base plate, fish wire and motor to create a hand-assist glove device, which is specially designed to help stroke survivors or postoperative patients to stretch their muscles. It can also help patients achieve designated physical therapy actions at home through the remote control mode of mobile phones, saving consultation costs, and hoping to benefit people in the society in the future.
The Hong Kong Innovation Fund held the first Hong Kong Innovation and Technology Fair, and 120 shortlisted innovation and technology works from primary and secondary schools were exhibited publicly for two consecutive days from Saturday.
(Photo by Mo Jiawen)
120 works of primary and secondary school students are on public display High school team invented barrier-free supermarket shopping system
The Hong Kong Innovation Fund held the first Hong Kong Innovation and Technology Fair with the theme of "Innovation with Big Ideas", encouraging participating students to use science and creativity to invent innovation and technology design products that care about the society, the disabled, the elderly living alone, and long-term patients. Social Inclusion, among the 400 I&T works submitted by more than 1,200 Primary 4 to Secondary 6 students from 140 primary and secondary schools in Hong Kong, the organizer first selected 120 shortlisted teams and arranged for two consecutive teams from today (25th). On Sunday, it was publicly exhibited in the 3G exhibition hall of the Hong Kong Convention and Exhibition Center to promote its design thinking and concepts. On Sunday, the winners of the "Primary School", "Junior High School" and "High School Group" and the "Most Popular Design Award" were selected. , to praise the team's originality and creativity.
Among them, the Form 5 student team of St. Stephen's Middle School for Girls, which was shortlisted in the high school group, designed the "e-shopping" supermarket shopping system for the visually impaired. Yes,” but they conducted an opinion survey by the Association of the Blind and in-depth interviews with the visually impaired store clerks of the Apple store, and found that all of them replied that no supermarket in Hong Kong provides barrier-free facilities to assist visually impaired people shopping. Even if the clerk knows how to use technology, they can’t go shopping alone in the supermarket. Although they can shop online, the main thing is that they don’t know what options they can choose from, and they can only buy known items.” So they spend about 4 to 5 months. , invented a super-market trolley AI shopping system, the principle is similar to the method of connecting the automatic luggage trolley to the near-airport luggage conveying system.
Stroke survivors with impaired hand mobility can use mechanical gloves for physical therapy
According to reports, the system uses UWB ultra-wide frequency technology, and the student team makes a series of programming in the microcomputer system. Through the answering between the visually impaired and the system AI, the suitable goods, brands and styles are found, and then the cloud system analyzes the best Path, and then send a message to the receiver on the trolley, the trolley will lead the visually impaired to walk to the designated shelf location, and then scan the goods on the shelf to repair the code to confirm the selected goods.
In order to take into account the safety and convenience of the visually impaired, when the trolley encounters an obstacle or loosens the handrail, the trolley will stop immediately, and after reaching the shelf, scan the designated goods, and the system can also push the current discount.
At present, the team has conducted a virtual supermarket shelf shopping experiment in a laboratory with an area of nearly 4,000 square feet, which has proved that the method is feasible and is gradually optimizing the system. With multiple trolleys operating at the same time, it is hoped that in the future, it will be launched into the market and create a truly barrier-free shopping facility for supermarkets.
Three students from Lai King Catholic Middle School, who were shortlisted for the junior high school group, invented a hand movement device "assistant" specially designed for stroke survivors. One of the team members said that the design originated from the hand movement ability of a primary school teacher after surgery. It's not as good as before. After searching for information, it was found that a study showed that only 15% of stroke survivors returned to normal hand ability, so they began to conceive a product. They created a product from theory to practice through a fish wire, a hose, a gear and a mechanical motor module. A set of mechanical active glove device, supplemented by mobile phone bluetooth programming mode, only need to input a few sets of commands, the mechanical device can be remotely controlled to achieve the specified physical therapy combination action, thus reducing the cost of patients going to the clinic to receive physical therapy.
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The team said that the creation process was not easy. The epidemic greatly shortened the school time, making it difficult for the team to focus on discussions. Afterwards, through division of labor and cooperation, it took 7 to 8 months to complete 3 creative versions successively, and more than 40 experimental versions were completed. It was successful only after the first version, in which the first version could only control one finger movement through a set of shredders and motors. After that, the 2.0 version was optimized to create a further operation through multiple sets of motors and shrews. When the user exerts force, the glove device will The EMG sensor will transmit the radio value generated by hand muscle conduction to the microcomputer system, and the system will then analyze the wave radiation to assist the patient to achieve the specified response of the hand, and the 3.0 version optimizes the control of the thenar muscle , and the Bluetooth remote operation function, so that the hand can make a fist-clenching action that is difficult for stroke patients, can clench objects with force, and restore normal hand function. The entire set of mechanical gloves is expected to cost less than 1,000 yuan In the future, it is planning to increase the portability and convenience of gloves, hoping to make good use of technology to help stroke patients recover and resume a normal life.
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