Recently, 7 kinds of intelligent sanitize equipment such as fixed equipment for sanitize bulk materials, mobile intelligent robots with accurate sanitize, and small and luminous elevator disinfection lights have been successively installed on the campus of Fudan University.
These devices are independently developed by the Fudan teacher and student team, and it takes only 7 days from the deployment of the research and development task to the delivery of the first batch of sanitize equipment.
Ultraviolet sanitize equipment "three brothers"
On April 22, a week after receiving the research and development task, Associate Professor Yao Qi's ultraviolet sanitize team has transported three kinds of ultraviolet sanitize equipment to the campus and officially "put on the job".
Roller type six-sided uniform ultraviolet object meter sanitize machine in the sanitize materials. The pictures in this article are all courtesy of Fudan University
Ultraviolet light sanitize equipment "three brothers" have different body shapes, different application scenarios, of which the roller type six-sided uniform ultraviolet object sanitize the larger body, suitable for outdoor hard object surface disinfection, such as cartons, hard outer packaging boxes, etc.; elevator disinfection lights, elevator button disinfection lights are small in size, suitable for elevator upper air and elevator button disinfection, "press the elevator button does not have to be wiped with paper towels."
The "three brothers" have a common way of sanitize - ultraviolet light sanitize. Through the irradiation of pathogenic microorganisms such as bacteria by ultraviolet rays, the structure of dna in the body is destroyed, causing it to die immediately or lose the ability to reproduce, thus achieving the effect of disinfection and sterilization. Ultraviolet light can carry out ultra-large-scale sanitize, aerosol cycle sanitize, with no secondary cost, sanitize no residue and other characteristics.
Placing a box of materials on a roller-type six-sided uniform UV sanitize machine can achieve a rapid six-sided sanitize of the object in just 5 seconds.
Elevator disinfection lights
According to Yao Qi, this sanitize machine must not only ensure efficiency, but also ensure human safety. The middle of the device adopts 254 nm peak wavelength ultraviolet light, through accurate optical design, simulation, to achieve internal uniform, fast sanitize, and no leakage of light; both ends are 222nm peak wavelength ultraviolet light, effectively solve the problem of short sanitize time before and after the article, while avoiding potential harm to people.
For ultraviolet applications, while ensuring the sterilization effect, it is more important to ensure its photobiological safety. Based on its own accumulation in light health and photomedonage for many years, Yao Qi's team uses four major optical technologies to improve the UV light sterilization effect: precision optical design, space accurate irradiance design, light dose quantitative evaluation, ultraviolet visualization technology, and ensure photobiological safety.
Elevator button disinfection
According to reports, this cross-research team is led by the optical engineering team of Fudan Institute of Engineering and Applied Technology (hereinafter referred to as: Institute of Industrial Research), with Fudan Department as the mainstay. Yao Qi led 8 scientific researchers from the Institute of Industry and Research, including a number of graduate students, to be responsible for the overall research and development and design of sanitize equipment and led the application of light source technology; 2 doctors from Fudan Affiliated Hospital participated in the safety test of the equipment to ensure the safety of the application; the 6-person team of the School of Architecture of Northeastern University helped the spatial planning and design, and the final product was jointly developed and produced with Guangmingyuan Company.
The student team developed a full-coverage intelligent disinfection machine for 5 days
On April 20, at an entrance of the Handan campus, the intelligent disinfection machine with full coverage of the object meter was delivered on a trial basis. This is Fudan's first automated material sanitize equipment, which is from the hands of Fudan student team.
"This disinfection machine is very practical and has reduced our workload!" Zhang Tianzi, the head of the R&D team and a doctoral student in the 2019 School of Information Science and Engineering, received praise.
Intelligent disinfection machine with full coverage of the object meter
On April 15, Zhang Tianzi and five team members received R&D requirements. In response to the demand, the team outlined the prototype of the automatic disinfection machine: full coverage of the object meter, adjustable disinfection intensity, convenient installation, safety first, environmental protection and health of the track type meter intelligent disinfection machine.
"On the basis of complying with the technical specifications for disinfection, safe, efficient and rapid landing is the core point of our research and development." Zhang Tianzi introduced, "Considering that most of the materials are packed in cartons, if the disinfectant water is directly sprayed, it is easy to wet the packaging and is very wasteful, we have adopted an ultrasonic atomization scheme." The disinfectant is atomized into particles of about 10 microns, which can be well attached to the surface of the object, and the disinfectant can continue to function after the items leave the disinfection compartment, which not only improves the disinfection efficiency but also ensures the reliable effect. ”
After a night of hard work, Zhang Tianzi led the team to design the first drawings and submitted a complete plan on the morning of April 16. After entering the processing and production process, Zhang Tianzi's team faced new challenges. Affected by the epidemic, it was difficult to purchase materials, and they had to "locally source materials" to conduct alternative analysis of parts and components. Logistics are in short supply and the timeliness of transportation is also testing them, and Zhang Tianzi is trying to find ways to "unite all the forces that can be united." There was not enough time, and they sometimes answered the phone while eating, asking for help from all sides. Three days of production was completed, two days of transportation arrived, and the intelligent disinfection machine with full coverage of the object meter achieved 5 days of delivery.
Intelligent robot distributed construction
After the truck is fully loaded with supplies and delivered to the school, the truck, the cargo, the standing area, the ground and the environment after the car leaves, all need to be comprehensively sanitize.
In response to this sanitize demand, Gan Middle School, vice president of the Institute of Industry and Research and dean of the Institute of Intelligent Robots, led the research and development of disinfection robots, and proposed a design scheme of "flexible and precise sanitize robot with hand-leg-eye-brain integration".
"Sanitize robots, which are common on the market, tend to carry out large-area coverage sanitize. The campus entry materials and specific environmental sanitize require high efficiency and accurate positioning, so the mobile flexible sanitize robot we developed is highlighted by the precision fixed-point sanitize. Gan Middle School said.
The team of young researchers of the Institute of Industry and Research Qi Lizhe developed the first generation of "disinfection robots" as early as 2020. Two years later, based on the needs of the outdoor environment sanitize, the team modified and upgraded the robot structure, increased one arm or two arms, improved the way of movement, and enhanced the ability to move autonomously. From the structural form and control mode, the qualitative leap in the field of disinfection machines is realized.
UV disinfection robot for takeaway
"From the remote control mode and the independent mapping method, the control mechanism of remote video surveillance has been added, and the AMR-double-arm robot that adapts to the sanitize of personalized takeaway virus and ensures the safety and health of people has been rapidly developed." In order to facilitate operation, two modes are set, one is a manual mode of simplified control, and the other is a remote control mode of remote video command. The two-pronged approach first allows users to get started quickly, and then gradually explores the robot's sense of technology, that is, the ability to be autonomous and intelligent. Qi Lizhe said.
Less degrees of freedom to move sanitize robot sanitize in the buffer zone of incoming supplies
According to reports, the team has established a general WeChat group in terms of overall common design, and has divided three kinds of robot "small team groups" on the issue of personality, each group has a doctoral student, several master's students and external collaborative technicians in the research group, maintaining the working mechanism of "half a day two small meetings, one day one conference", division of labor and cooperation, orderly.
After the efforts of the first stage, the joint team technical guidance team has identified the virus sanitize needs of the school in various scenarios, and is ready to develop customized sanitize robots in the next stage.
On April 24, the first generation of mobile sanitize robots for trucks and the environment sanitize in the handan campus material buffer zone. The program automatically controls the spray form, distance, and starts working, which is eye-catching. The 6-degree-of-freedom mobile sanitize robot for the environment and takeaway has also been deployed.
6 degrees of freedom mobile sanitize robot to conduct environmental sanitize in the apartment