Students build a wall-climbing robot that has been commissioned by a company.

The new generation of students is increasingly talented, possesses strong soft skills, adapts quickly to technology, demonstrates competence in their work, and is especially creative...

Aiming to assist telecommunications cable installation workers, a group of students from Ho Chi Minh City University of Technology and Education have created a wall-climbing robot capable of carrying a maximum load of 1.7 kg. The group consists of three students: Truong Quoc Huy, Le Van Duc, and Nguyen Dang Truong; all fourth-year students in the Mechatronics Department of the university. Their wall-climbing robot makes installing telecommunications cables indoors much easier than manual wiring methods.

Group of students build wall-climbing robot.

NVCC

The design with multiple rubber grooves increases wall grip.

With just a few taps on his phone screen, Quoc Huy made the robot climb walls, carrying cables and moving smoothly through every nook and cranny of the building, much like... Spider-Man. "Our team created this product with the hope of helping telecommunications workers avoid the effort of removing ceiling panels and saving time when running cables on the ceiling," Huy explained. He continued, "We used a 3D printer to design the robot's frame and completed it within three months. With a compact size of 15 x 15 cm and weighing about 0.5 kg, the wall-climbing robot moves easily across flat and uneven surfaces, especially in narrow spaces. In addition, the team equipped the robot with lights for low-light conditions, a 16V motor, and a 60A current. The robot can carry loads up to 1.7 kg and has an operating time of 15 minutes." Quoc Huy also said that in the beginning, the group independently researched and designed the motor circuits, installed surveillance cameras, and built a program to control the robot on smartphones. "There were some hard and soft components for assembling the robot that the group couldn't find or had to spend a long time buying," Huy recounted. According to Quoc Huy, the wall-climbing robot is equipped with a high-powered motor commonly used in drones. "The group placed an additional motor under the robot to help expel air. Thanks to this, the robot will grip the wall tightly. On the robot's wheels, the group designed many rubber grooves to increase its grip," Huy said. Quoc Huy said that the robot's grip strength depends on the motor's rotation speed. "The group also had quite a headache having to carefully calculate the robot's grip strength. Low grip strength would cause the robot to fall while moving. If the grip strength is too strong, the robot will have difficulty moving," Huy said.

A telecommunications company wants to collaborate.

Huy's team equipped the robot with a lithium battery connected to the motor via external wires, reducing its weight. However, this also made the robot prone to voltage drops. "This means that after a while, the power supply to the motor becomes insufficient, reducing the robot's grip," Huy explained.

Robot that climbs walls and carries cables.

NVCC

"The current supplied to the robot is very high. When moving long distances, the longer the connecting cable, the greater the resistance, causing energy loss and reducing motor power," Huy further explained the reason for the voltage drop. "In the future, the team plans to develop a program to optimize energy usage by only supplying high current during wall climbing. When the robot moves on a flat surface, it will use lower energy," Huy said. Dr. Dang Xuan Ba, a lecturer in the Department of Electrical and Electronic Engineering at Ho Chi Minh City University of Technology and Education, who supervised the robot development, said that a telecommunications company is currently interested in collaborating on a trial of the product, with an order price of nearly 1 million VND per robot. Simultaneously, the team is redesigning the hardware so that the robot operates according to a pre-programmed system, without human control. Besides its application in cable routing, according to Dr. Dang Xuan Ba, the robot could also be marketed as a children's toy. It is often used for movement, observation, and problem-solving in narrow, harsh areas inaccessible to humans. However, Dr. Dang Xuan Ba ​​said the team needs more time to assess the stability and flexibility of the robot's operation. In addition, the materials used to make the robot need to be durable, impact-resistant, and ensure the stability of the motor. Simultaneously, the team must run the robot more frequently to optimize the design, adjust motor power, and anticipate potential problems, ensuring safety.

Our team created this product with the hope of helping telecommunications workers avoid the effort of removing individual ceiling panels and saving time when running wiring in ceilings.

Truong Quoc Huy, a student at Ho Chi Minh City University of Technology and Education.

Thanhnien.vn

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