Wheelchair indoor global video monitor navigation system based on suspended wireless transmission camera

Abstract

The invention provides a wheelchair indoor global video monitor navigation system based on a suspended wireless transmission camera. According to the system, a suspended wireless camera 1 fixed on a roof is employed to acquire wheelchair and motion field images in real time and transmit the wheelchair and motion field images to a wheelchair vehicle microcomputer 2 which is taken as an operation and monitor platform. The platform is provided with peripheral monitor navigation and man-machine interface functions. An operation interface directly provides a field monitor image and an object for selection. A user only needs to select a destination by using a mouse or touch screen mode, and the system determines a position of a wheelchair through identifying a color code 3 set on the wheelchair, generates an optimal navigation route according to field information provided by a selected object point and video image, and regulates and controls PWM pulse width to drive a left and right wheel motor control wheelchair to reach the selected object through a mobile peripheral subsystem 4. Main application scenes of the system are interiors of a home, a hospital and a rehabilitation center, while in operation, monitoring of mobile peripheral equipment and a motion scene can be realized simultaneously, operation is simplified, and security is raised.

Description

technical field [0001] The present invention relates to intelligent wheelchair navigation technology, in particular, it proposes a wheelchair indoor global video monitoring and navigation technology based on a top-hung wireless transmission camera, introduces indoor video monitoring technology, and combines it with robot autonomous navigation technology to realize indoor navigation control of wheelchairs . The invention belongs to the technical field of intelligent wheelchair navigation. Background technique [0002] Intelligent wheelchair is the application of intelligent robot technology to electric wheelchairs, integrating research in various fields, including machine vision, robot navigation and positioning, pattern recognition, multi-sensor fusion and user interface, etc., involving machinery, control, sensors, artificial intelligence and other technologies . Smart wheelchairs can provide handicapped people with superior mobility tools, help them improve their quality...

AI Technical Summary

Problems solved by technology

[0004] 1) The effective navigation range is limited due to the small field of vision, and only the front information can be obtained but not the overall information of the site. It is impossible to realize the global monitoring and navigation obstacle avoidance of the sports scene, which affects the security of the system

Generally rely on the cooperation of other sensors, which increases the cost input and the complexity of the system

[0005] 2) The motion of the smart wheelchair affects the stability of image acquisition, display and recognition, making it difficult to guarantee navigation accuracy

[0006] 3) Due to the short navigation distance, the operator needs to operate frequently and manually adjust if necessary. However, the users of smart wheelchairs are generally in poor physical condition, and the operation is time-consuming and laborious, which is easy to cause fatigue and discomfort

Images