Electronic Guide Dog Navigation and Stair Climbing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional intelligent guide dogs for the blind are limited in their ability to recognize traffic lights and navigate free staircases, restricting the blind's life experiences.
Innovation Solution
An electronic guide dog with a main frame, drive wheels, swivel obstacle avoidance mechanism, identification braking mechanism, and auxiliary support mechanism, equipped with infrared sensors, color sensors, and motors for navigation and stair climbing, along with solar photovoltaic panels for energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional intelligent guide dogs are used, then basic line tracking and infrared obstacle avoidance are achieved, but traffic light recognition and free stair climb capabilities are missing
Solution Approach 1:
The navigation system is segmented into multiple specialized sensor modules: infrared sensors for obstacle detection, color sensors for traffic light recognition, and ultrasonic sensors for environmental mapping. Each sensor type handles specific navigation tasks, enabling comprehensive adaptability while maintaining reliable traffic light recognition through dedicated color sensing capabilities.
Solution Approach 2:
The guide dog system integrates multiple sensing functions into a unified platform that simultaneously performs obstacle avoidance, traffic light recognition, and stair detection. The control unit processes inputs from various sensors to execute diverse navigation tasks including following paths, avoiding obstacles, recognizing traffic signals, and climbing stairs, achieving universal navigation capability.
2Adaptability or versatility
If conventional intelligent guide dogs are used, then basic obstacle avoidance is achieved, but free stair climb capability is missing
Solution Approach 1:
The system performs preliminary detection of stair structures using ultrasonic sensors and infrared sensors before attempting to climb. The control unit identifies stair geometry and plans the climbing path in advance, adjusting motor commands proactively to ensure reliable free stair climb capability while maintaining terrain adaptability for various surfaces.
Solution Approach 2:
The guide dog system dynamically adjusts its motor control parameters based on real-time terrain feedback from sensors. When stairs are detected, the system transitions from flat-ground walking parameters to stair-climbing parameters, dynamically modifying wheel torque, speed, and coordination to reliably navigate different terrains including stairs while maintaining overall terrain adaptability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the electronic guide dog to navigate safely and efficiently, including recognizing traffic lights and climbing stairs, thereby enhancing the quality of life for the blind by providing a more practical and safe assistance system.
Implementation Method 1
assembly board and a solar photovoltaic panel are installed on both a left side and a right side of the main frame
Implementation Method 2
a swivel obstacle avoidance mechanism comprising an infrared sensor provided on a front side of the main frame
Data Source
AI summary
An electronic guide dog includes: a main frame, front drive wheels disposed on both sides of a front portion of the main frame, and rear drive wheels disposed on both sides of a rear portion of the main frame, wherein the front drive wheels and the rear drive wheels are connected to the main frame through front arms and rear arms, respectively; wherein the electronic guide dog further comprises: a head frame hinged to a front of a top end of the main frame, wherein a signal receiving board is provided on the head frame; a drive mechanism comprising a rear drive motor; a swivel obstacle avoidance mechanism comprising an infrared sensor provided on a front side of the main frame, a left front drive motor and a right front drive motor; an identification braking mechanism; a front arm swing mechanism; and an auxiliary support mechanism.