Wheelchair autonomous following and obstacle avoidance system based on mobile robot technology

Abstract

The invention discloses a wheelchair autonomous following and obstacle avoidance system based on a mobile robot technology. The wheelchair autonomous following and obstacle avoidance system comprises a central controller module, an obstacle avoidance module, a following module, an alarm module and a motor driving module, the central controller module selects an STC89C52RC single chip microcomputer as a CPU (Central Processing Unit) of the module; the obstacle avoidance module is composed of three paths of ultrasonic sensors, the used sensors are HC-SR04 ultrasonic modules, and the obstacle avoidance module has the advantages of being high in measurement precision and wide in detection range; the following module is composed of an infrared sensor and a control circuit, and an E18-D50NK infrared detector is adopted, so that the following module is not easily interfered by temperature and wind direction; a stepping motor of an MY1016Z-250W 24V model is selected as the motor driving module, and more accurate operation can be realized by using the stepping motor. According to the invention, the safety and the operation simplicity which are most emphasized by people who have difficulty in moving are improved, and the autonomous following system is added, so that the system is more suitable for actual use requirements, and can effectively solve the travel problem that old people and people have difficulty in moving understand.

Description

technical field [0001] The invention relates to the technical field of mobile robots, in particular to a wheelchair autonomous following and obstacle avoidance system based on mobile robot technology. Background technique [0002] Wheelchairs are the most important means of transportation for the vast majority of the elderly and disabled people. With the continuous development of technology, wheelchairs have gradually become intelligent. In order to facilitate the travel of the elderly and some people with disabilities, a new type of smart wheelchair has been studied. Owning is an extremely meaningful thing for some disabled people. [0003] In terms of mobile robotics, its main research phase began in the late 1960s. From 1962 to mid-1972, the Stanford Research Institute of the United States developed the world's first intelligent mobile robot named Shakey. With the continuous improvement and iteration of the basic functions of mobile robots, their business is constantly ...

AI Technical Summary

Problems solved by technology

[0005] At present, one of the important functions of smart wheelchairs is obstacle avoidance, which is one of the important functions to protect the life safety of users. Its essence is to judge whether the wheelchair itself is blocked by obstacles, and if so, it will smoothly bypass obstacles. It cannot affect the user experience, or even threaten the lives of others

Images