Adaptive Height Warning for Portable Apparatuses
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Solution Overview
Problem
Existing methods for controlling the height of an apparatus moved by a user, such as a robot, fail to accurately determine if the apparatus will be damaged upon falling, leading to unnecessary warnings when lifted from soft surfaces like carpets or sofas, as they fix the threshold height above a floor surface.
Innovation Solution
An apparatus equipped with sensors to detect motion and vertical movement, a camera for image processing, and a processor that calculates distances to objects below, comparing them to tables of safe heights, displaying and sounding alerts based on the calculated risks, allowing for context-dependent warnings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed threshold height is used to warn users about potential damage, then the apparatus can provide simple warning control, but it causes unnecessary warnings when lifted from soft surfaces like carpets or sofas
Solution Approach 1:
The system changes the warning threshold parameter dynamically based on the detected surface type. When a soft surface is detected, the threshold is increased or disabled, preventing false warnings. When a hard surface is detected, the threshold is set to appropriate levels. This resolves the contradiction by making the threshold adaptive rather than fixed.
Solution Approach 2:
The system uses sensors to detect the surface type beneath the apparatus and feeds this information back to the control unit, which then adjusts the warning behavior accordingly. This feedback loop allows the system to distinguish between safe and dangerous lifting scenarios, eliminating unnecessary warnings while maintaining protection.
2Reliability
If the threshold height is set low to prevent damage, then damage risk is reduced, but warnings are triggered even when lifting from safe surfaces
Solution Approach 1:
The warning threshold is adjusted based on the detected surface characteristics. On soft surfaces, the effective threshold is raised or warnings are suppressed, allowing users to lift without interruption. On hard surfaces, the threshold remains low to ensure damage prevention. This dynamic parameter adjustment maintains reliability while improving productivity.
Solution Approach 2:
The warning system is segmented into different operational modes based on surface type detection. Separate threshold values and warning behaviors are defined for soft surfaces versus hard surfaces. This segmentation allows the system to optimize for both safety and user efficiency in different contexts.
3Productivity
If the threshold height is set high to allow free movement, then user efficiency is improved, but the apparatus may be damaged when lifted from hard surfaces
Solution Approach 1:
The system dynamically changes the warning threshold parameter based on surface type detection. On hard surfaces, the threshold is set low to prevent damage. On soft surfaces, the threshold is raised or warnings are suppressed to improve user efficiency. This resolves the contradiction by making the threshold adaptive to environmental conditions.
Solution Approach 2:
The warning threshold is made dynamic rather than static, adjusting in real-time based on the detected surface characteristics. The control unit continuously monitors surface type and modifies the threshold accordingly, allowing the system to be both protective and efficient in different operating conditions.
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
The solution provides appropriate user notifications about potential damage based on the distance to objects below, distinguishing between safe and hazardous heights, thus preventing unnecessary warnings and ensuring the user is informed of actual risks.
Implementation Method 1
a first sensor that detects a motion of and a moving direction of the apparatus
Implementation Method 2
a second sensor that measures a movement distance in vertical direction of the apparatus
Data Source
AI summary
In a case where an apparatus that is moved by a user is moved in a vertical direction, when a distance from an object located in the same two-dimensional position as the apparatus and directly underneath the apparatus is greater than a height, which corresponds to the two-dimensional position and which possibly damages the apparatus when the apparatus falls, a display is caused to perform a first display and a speaker is caused to output a first sound. When the distance is equal to or shorter than the height, the display is caused to perform a second display and the speaker is caused to output a second sound.