Modular layered communication and control system for intelligent mobile wheelchair

By using a modular design that manages radar data streams through a switch, dedicates a CAN bus to motion control, and integrates a Mini PC host with a built-in ROS operating system, the system solves the problems of poor data fusion and insufficient security redundancy in smart wheelchairs. This enables efficient and reliable communication and control, making it suitable for a modular, hierarchical communication and control system for smart wheelchairs.

CN122172703APending Publication Date: 2026-06-09CHINA THREE GORGES UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA THREE GORGES UNIV
Filing Date
2026-03-31
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The existing communication and control architecture of intelligent wheelchairs suffers from poor data fusion, communication architecture bottlenecks, insufficient real-time performance and reliability, and insufficient security redundancy, making it difficult to achieve efficient collaborative work and scalability.

Method used

A switch is used to centrally manage radar data streams. The front and rear radars are connected via Ethernet interfaces. The CAN bus is dedicated to motion control command transmission. The Mini PC host has a built-in ROS operating system to decompose functional modules. Combined with hardware-level overload protection, communication-level heartbeat detection and timeout reconnection, and algorithm-level obstacle avoidance priority control, a modular and hierarchical communication and control system is constructed.

Benefits of technology

It improves system communication efficiency and reliability, enables low-latency navigation decisions and motion control, has good scalability and comprehensive security protection, and ensures stable operation in complex environments.

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Abstract

The application discloses a modular layered communication and control system of an intelligent mobile wheelchair, which comprises a sensing module, a control module, a driving module, a man-machine interaction module and a power supply module. The sensing module comprises double radars connected to a switch; the control module comprises a Mini PC host connected to a CAN-to-USB communication module through a USB interface and connected to the switch through an Ethernet interface; the driving module comprises a brushless motor driving board and two brushless motors, the brushless motor driving board being connected to the CAN-to-USB communication module through a CAN bus; the man-machine interaction module comprises a touch portable screen and a wireless keyboard and mouse; and the power supply module supplies power for the Mini PC host through a voltage stabilizer. The application realizes a high-reliability, low-delay and easily-expandable intelligent wheelchair system through the centralized management of radar data by the switch, the protocol separation architecture dedicated to motion control of the CAN bus and a three-layer security mechanism, and solves the problems of poor sensor fusion, high communication delay and weak expansibility in the prior art.
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