Abstract: Traditional manual repair of fishing nets is inefficient and costly. To solve the problem of traditional manual repair of fishing nets, a robotic arm that can automatically sew fishing nets is designed. The robotic arm is mainly controlled by STM32F103C8T6, and its functions are achieved through infrared sensor module, motor actuator module, and communication module. The infrared sensor module is responsible for detecting the position of damaged fishing nets. The motor actuator module drives the motors in six axis to flexibly send the sewing device to the preset node, and the communication module is responsible for transmitting the detected information of damaged fishing nets to the controller for processing. After practical testing, the designed robotic arm can achieve high-precision, fast, and effective automatic sewing of fishing nets. Compared with traditional manual repair methods, this automatic repair technology improves the efficiency and quality of fishing net repair, reduces labor costs, and has obvious advantages.

Key words: automatic fishing net repair, mechanical arm, traditional manual repair, the motor