Aerial Work Platform Sensor Layout for Crush Hazard Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Aerial and scissor lifts face safety hazards due to the risk of operators being crushed between the work platform and overhead or below-ground structures, with existing technologies failing to effectively detect and prevent such obstacles, particularly in extended positions.
Innovation Solution
The platform assembly incorporates strategically positioned sensor units that provide overlapping 'fans' of coverage to detect potential obstacles, including a primary sensor unit monitoring the area above and around the platform and a secondary sensor unit monitoring below the platform extension, using radar or LiDAR technology to prevent crushing hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor units are positioned on the work platform to detect obstacles, then operator safety is improved, but device complexity increases
Solution Approach 1:
The sensor system is divided into multiple discrete sensor units positioned at different locations on the work platform. Each sensor unit independently monitors specific zones, allowing the system to achieve comprehensive coverage while maintaining modular architecture that simplifies installation and maintenance.
Solution Approach 2:
Sensors are positioned to detect obstacles in multiple spatial dimensions including overhead areas, side areas, and below the platform. This multi-dimensional detection approach ensures comprehensive safety coverage without requiring a single complex sensor system.
2Measurement precision
If multiple sensor units with overlapping coverage are installed, then detection precision is improved, but device complexity increases
Solution Approach 1:
Multiple sensor units with overlapping detection zones are combined to create a unified safety monitoring system. The overlapping coverage areas ensure that no gaps exist in detection, and the sensors work together to provide redundant verification of obstacle presence, enhancing detection precision.
Solution Approach 2:
Sensors are positioned and configured before operation to establish predetermined detection zones and overlapping coverage patterns. This preliminary arrangement ensures that all critical areas are covered without requiring complex real-time adjustments during operation.
3Reliability
If sensors monitor areas above and below the platform including extended positions, then safety coverage is improved, but device complexity increases
Solution Approach 1:
The monitoring area is segmented into distinct zones: overhead zone, side zones, and below-platform zone. Separate sensor units are assigned to each zone, with sensors positioned to monitor specific areas including the extended platform position, allowing comprehensive safety coverage through modular deployment.
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 sensor system effectively enhances operator safety by detecting obstacles and controlling the platform's operation to avoid collisions, ensuring the platform's safe movement and operation, even in extended positions, thereby reducing the risk of serious injury or death.
Implementation Method 1
using radar or LiDAR technology to prevent crushing hazards
Implementation Method 2
using radar or LiDAR technology to prevent crushing hazards
Data Source
AI summary
A platform assembly includes a work platform including a platform floor and a safety rail extending from the platform floor to a rail height, and a primary sensor unit secured to the work platform and positioned adjacent the platform floor. The primary sensor unit is configured to monitor an area from the platform floor to a space above the rail height and forward and aft of the work platform. The platform assembly enhances protection for an operator from sustained involuntary operation resulting in an impact with an obstruction or structure.