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Yesterday, Chen Jia, inventor of Futian Middle School, briefed reporters on the infrared sensing principle of smart signal lights.
There are rare traffic lights on the main campus of the middle school, and they are still students' own invention designs! Yesterday, the reporter learned from Futian Middle School that after the “Intelligent Sensing Traffic Lights†designed by senior high school girl Chen Jia won the second prize of the Guangdong Youth Science and Technology Innovation Competition this year, the model of the competition became a real one with the help of Shenzhen traffic police. The traffic lights are put into use on the main road of the campus.
"On the way home from school, I often see pedestrians crossing the street. I don't even look at the signal lights. I have a bunch of them. Someone takes the lead and others immediately follow. All of them are in a hurry and are in a hurry." What is it? Cause "Chinese style crossing"? Chen Jiaying is concerned with the humanization of the signal lights. Is it possible to change "Chinese style crossings" by improving the signal lights? She thought of the school's infrared alarm systems and infrared sensor faucets. "Can we add infrared sensors to signal lights to make them more intelligent?"
Chen Jia wrote the question on the creative card. Zhao Xiaodong, the instructor, supported her idea and asked the students to discuss it in a small group. The enthusiastic discussion among the students made Chen Jia's idea more vivid and he soon began to produce.
In order to make this intelligent traffic light, Chen Jia made a field trip to the road and passed one after another intersection. He carefully observed many traffic lights. Signal timing is a difficult problem. How can we give pedestrians the time to cross the street? How can we not only allow pedestrians to wait too long, but also allow vehicles to have a buffered time to safely stop? Chen Jia combined the existing auto-transformed traffic lights and traffic lights with artificial buttons into one, and installed infrared sensor switches in appropriate positions on the traffic light poles. When a pedestrian is sensed within 10 meters, the start delay is reached. Switch, 10 seconds after the red light on the road, pedestrians can cross the road. Chen Jia also added solar cells and lithium batteries for electric energy to his works. This way, he can use solar energy to power signals, save energy, save carbon, and protect the environment. Even when the power fails, the signal lights can still work for a certain period of time.
After repeated thinking and continuous improvement, Chen Jia’s intelligent traffic lights were finally born. She used the discarded wine box, and with the help of the teacher, made a model of sensing the traffic light.
In April of this year, Chen Jia participated in the 28th Guangdong Youth Science and Technology Innovation Contest with her “intelligent sensory traffic light†and won the second prize at the provincial level. In the 28th Innovation Competition in Shenzhen, he also won a gold medal.
It was learned that Chen Jia invented the infra-red traffic light. The traffic police bureau of the city greatly encouraged the students' awareness of traffic safety. The police of the Science and Technology Department specially assisted Chen Jia to “dream come trueâ€. Xu Zebin, a police officer of the Science and Technology Department, told reporters that they had discussed with Chen Jia and school teachers several times and formulated an improvement plan to improve Chen Jia’s traffic lights, such as adding anti-lightning protection functions, setting up optical isolation, and so on. Become a true traffic light, it can run exactly like an ordinary traffic light.
In the near future, a new and truly “intelligent sensory traffic light†appeared on the main road of Futian Middle School, which happened to be the zebra crossing from the school building to the stadium. The principal said, "This is a real traffic light. When the car passes by, it must stop at a traffic light." (Reporter Shen Xiaoni)
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