Mobile robot
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Solution Overview
Problem
Existing mobile robot bumpers are limited to two-dimensional movement and lack a mechanism to guide the bumper back to its original position after impact, restricting the robot's mobility and inability to provide equal restoring forces for side and front impacts.
Innovation Solution
A mobile robot design featuring a bumper guide module with a guide hole and protruding guider, a position restoring module with elastic members, and an impact sensing module with detection sensors, allowing the bumper to move freely and return to its original position, providing equal restoring forces for different impact types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a bumper assembly includes a guide member for guiding forward/rearward movement, then the bumper can detect front impact accurately, but the movement of the bumper is restricted to two-dimensional movement and cannot return to original position after side impact
Solution Approach 1:
The guide hole is divided into multiple segments: a first guide hole for front/rear movement, a second guide hole for side movement, and a third guide hole for restoring the bumper to its original position. This segmentation allows the bumper to perform different movements in different directions independently, resolving the contradiction between accurate front impact detection and versatile movement capability.
Solution Approach 2:
The guide structure transitions from a single two-dimensional guide hole to a three-dimensional multi-directional guide hole system. The guide holes are arranged in different spatial orientations (front/rear direction, side direction, and restoring direction) to enable the bumper to move in multiple dimensions, thus achieving both precise impact detection and comprehensive movement capability.
2Device complexity
If no device is provided for guiding the bumper to a certain position, then the structure is simpler, but the bumper cannot restore to its original position after impact
Solution Approach 1:
The bumper assembly includes a restoring guide hole that enables the bumper to automatically return to its original position after impact without requiring external intervention or complex active control systems. The elastic deformation of the bumper body itself provides the restoring force, making the system self-servicing and maintaining position stability with minimal structural complexity.
3Measurement precision
If multiple detection sensors are used to sense front and side impacts, then impact detection is more accurate, but the device complexity and cost increase
Solution Approach 1:
The single detection sensor is positioned and configured to perform multiple functions: it can detect both front impacts and side impacts by monitoring the bumper's movement in different directions through the guide hole system. This multi-functional sensor design eliminates the need for multiple separate sensors, reducing device complexity and cost while maintaining comprehensive impact detection capability.
Solution Approach 2:
The detection function for both front and side impacts is merged into a single sensor system. The sensor detects the bumper's displacement along the guide holes, which can indicate either front/rear movement or side movement depending on the impact direction. This merging of detection functions reduces the number of sensors required while preserving accurate impact sensing.
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 mobile robot to freely move within a predetermined range after impact, restore its position, and detect impacts on both sides using fewer sensors, enhancing mobility and stability.
Implementation Method 1
a position restoring module, with one side being connected to the body and the other side being connected to the bumper, and having an elastic member
Data Source
AI summary
The present disclosure relates to a mobile robot, and more particularly to a mobile robot, including: a bumper which surrounds at least a portion of an outer circumference of the body; position restoring modules having an elastic member and disposed to be symmetrical to each other; a bumper guide module, having a guide hole and a protruding guider which moves inside the guide hole; and impact sensing modules configured to sense impact and disposed to be symmetrical to each other.