Ladder Positioning Indicator with Embedded Sensor
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Solution Overview
Problem
Existing ladder positioning indicators require conscious effort and are prone to being ignored, leading to increased risk of accidents and decreased productivity due to passive indication and exposure to rugged conditions, which compromises safety and productivity.
Innovation Solution
A multimodal indicator safety device that actively informs users of the ladder's inclination and tilt using electronic sensors, a controller, and indicators like visual, audio, or vibration alarms, housed within the ladder to protect against external damage and provide directional guidance for proper positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical level is attached to the exterior of the ladder to be visible, then the user can observe the ladder inclination, but the level is exposed to rugged conditions and is subject to being damaged or broken
Solution Approach 1:
The electronic sensor and indicator are nested within the ladder structure (inserted into the ladder rail or rung), protecting them from external damage while maintaining functionality. The sensor is housed within the ladder's internal structure rather than being exposed on the exterior surface.
Solution Approach 2:
The patent replaces the mechanical level with an electronic sensor system that uses electronic indicators (visual, audio, or vibration) to convey ladder inclination information. This substitution eliminates the need for a mechanical level to be externally visible, thereby protecting it from rugged conditions.
2Reliability
If a mechanical level is used to measure ladder inclination, then the ladder positioning can be detected, but the passive indication can be easily ignored by the user
Solution Approach 1:
The system provides active feedback to the user through multiple modalities (visual indicators, audio alarms, vibration pads) that continuously communicate the ladder's inclination status. This active feedback ensures the user is aware of the ladder position without requiring conscious effort or interpretation of passive mechanical indicators.
Solution Approach 2:
The patent employs visual indicators that can change color or illumination to communicate different ladder inclination states. This provides intuitive, immediate visual feedback to the user about whether the ladder is properly positioned, making the information difficult to ignore.
3Reliability
If proper ladder positioning procedures are followed with mechanical levels, then safety is improved, but the numerous check and correct cycles can prematurely fatigue the user resulting in decreased productivity
Solution Approach 1:
The electronic sensor system automatically monitors and indicates the ladder's inclination status without requiring user intervention or repeated manual checks. The system self-monitors the positioning and provides continuous feedback, eliminating the need for repeated check-and-correct cycles that fatigue users and reduce productivity.
4Ease of operation
If the mechanical level is positioned on the outward face of the ladder, then it is visible to the user, but it cannot be observed by a user who is in a position to begin ascending the ladder
Solution Approach 1:
The patent positions the sensor and indicator system in different spatial locations within the ladder structure (such as inserted into the ladder rail or rung) to make it accessible to users at various positions, including those about to ascend. This multi-dimensional placement ensures the safety indication is available where needed.
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
Enhances safety by actively indicating ladder positioning to users without compromising productivity, reducing the risk of accidents, and extending the operational lifetime of the device by shielding it from external impacts.
Implementation Method 1
The electronic sensor measures the inclination of the ladder to produce a measured inclination
Data Source
AI summary
A safety device for measuring and indicating the level of a ladder having rungs extending between a pair of elongated ladder rails, the safety device comprising a housing dimensioned to be inserted into one of the rungs of the ladder, an electronic sensor disposed in the housing, a controller disposed in the housing, which is in electronical communication with the sensor, at least one indicator, and a power supply for supplying power to the device. The electronic sensor measures the inclination of the ladder to produce a measured inclination which the controller compares to a stored predetermined level value to produce a comparison signal. The at least one indicator receives the comparison signal and indicates to the user the comparison signal.