Research On The Multi-mode Control System Of Intelligent Wheelchair

Intelligent wheelchair is an application of intelligent robot technology. Wheelchairs as mobility aids to handicapped persons and the elderly help that they can be in harmony with society. With the development of path planning technology,speech recognition technology,SPI Simulation Technology,Information Fusion Technology, the skill of wheelchair changes profoundly, having the abilities of autonomous obstacle avoidance,speech control and autonomous obstacle avoidance,manual control and so on. This topic designs the wheelchair of multimode control system. The work we done as follows.1. The wheelchair modular systemOn the basic of the analysis of intelligent wheelchair function, the paper modularize the design proposal of intelligent wheelchair and divide it into machinery structure part,man-machine interface part,environment perception part,speech control and autonomous obstacle avoidance part,autonomous obstacle avoidance part,the driving part, and focuses on the system of manual control.2. The speech control system with autonomous obstacle avoidance.In consideration of safety, based on the speech control system, this topic designs a new control system: The speech control system with autonomous obstacle avoidance.3. The ultrasonic distance measurement system of wheelchairThe ultrasonic distance measurement system: we used ultrasonic sensor as the environment perception component, the circuit chart which is used to receive and emit the ultrasonic signal is designed. The topic use the multi-channel analog switch, designed the multi-access distance measurement system. and these errors are analysed.4. The wheelchair algorithm of autonomous obstacle avoidancePath planning is the most important module for autonomous ability. In this paper the explorer's path planner has only one mode: the obstacle-avoidance mode.Finally, the existing problems and future are summarized.