Autonomous navigation and positioning system in intelligent nursing bed and positioning and navigation method

Abstract

The invention relates to an autonomous navigation and positioning system in an intelligent nursing bed. The autonomous navigation and positioning system positions the posture and the moving direction of a movable wheelchair serving as a moving object relative to a robot nursing bed serving as a target. The autonomous navigation and positioning system comprises two ultrasonic modules, a robot nursing bed emission and receiving control module and a movable wheelchair emission and receiving control module, wherein the two emission and receiving control modules are respectively provided with a wireless part used for mutual communication. A positioning and navigation method is based on the binaural localization principle, ultrasonic transmission time of ultrasonic emission ends and ultrasonic receiving ends in the two ultrasonic modules is obtained, so that the ultrasonic emission ends and the ultrasonic receiving ends form an isosceles triangle layout, the movable wheelchair keeps moving on the medial axis of the robot nursing bed, and the side face of the movable wheelchair is in parallel with the side face of the robot nursing bed. The intelligent nursing bed achieves the aims of ultrasonic tracking, precise positioning and navigation.

Description

technical field [0001] The invention relates to the field of ultrasonic positioning, in particular to the application of ultrasonic positioning technology in intelligent nursing beds. Background technique [0002] The means of rehabilitation nursing services can be divided into two categories: medical rehabilitation nursing and rehabilitation of nursing aids. Among them, the rehabilitation of nursing aids refers to the means and methods of using rehabilitation nursing aids to provide compensation, replacement, and treatment for the disabled, the elderly, and the disabled. Safe, comfortable and comfortable mobility aids are essential for the disabled to maximize their ability to take care of themselves and participate in social activities. However, to transfer from a bedridden state to a mobile device, the assistance of a nursing staff is necessary, and there is a risk of falling during the transfer. The robot nursing bed is a new mobile auxiliary device for rehabilitation ...

AI Technical Summary

Problems solved by technology

[0005] The patent of this invention aims at the problems of large attenuation of ultrasonic waves in the air, low positioning accuracy and short positioning distance in the prior art, and provides a new ultrasonic positioning system and positioning method suitable for intelligent nursing beds

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