Conveyor Warning Device for Hazard Detection
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Solution Overview
Problem
Existing automatic conveyor devices, such as escalators and moving walkways, lack effective active safety measures to warn passengers of potential hazards in the dangerous area between the moving and stationary components, leading to accidents.
Innovation Solution
The implementation of a warning device system that includes projection devices, display devices, light strips, color-changing lights, and sound prompt devices, strategically placed near the comb plates at both ends of the conveyor device, to actively alert passengers of the dangers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If passive safety devices (comb plate with sensors) are used to detect trapped objects, then safety detection capability is improved, but the device cannot actively warn passengers before danger occurs, leading to abrupt stops and potential damage
Solution Approach 1:
The patent applies preliminary action by installing warning devices (projection devices, display devices, light strips, sound prompt devices) that activate before the comb plate encounters trapped objects. These devices warn passengers in advance to lift their feet or remove objects, preventing the dangerous abrupt stop that would otherwise occur when sensors detect trapped objects.
Solution Approach 2:
The patent implements feedback by creating a closed-loop safety system where sensors detect trapped objects, trigger warning devices to alert passengers, and then monitor whether the situation is resolved. This feedback mechanism allows the system to respond dynamically to safety threats rather than relying solely on passive detection followed by abrupt stopping.
2Reliability
If multiple warning devices (projection devices, display devices, light strips, sound prompt devices) are installed to actively alert passengers, then passenger awareness and safety are improved, but device complexity increases
Solution Approach 1:
The patent merges multiple types of warning devices (projection devices, display devices, light strips, sound prompt devices) into a coordinated safety warning system. These different devices work together synergistically to provide multi-sensory warnings to passengers, improving safety awareness while managing complexity through integrated control.
Solution Approach 2:
The warning devices are designed with multi-functionality to address various passenger attention scenarios. Projection devices can display visual warnings, light strips provide illuminated alerts, and sound prompt devices offer auditory notifications. This universal approach ensures passengers receive warnings through their preferred sensory channel, enhancing overall safety effectiveness.
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 warning device system significantly enhances passenger safety by actively alerting them to potential hazards, reducing the likelihood of accidents and minimizing damage to the conveyor device.
Implementation Method 1
a first warning device disposed in the vicinity of the first comb plate or the second comb plate, where the first warning device comprises a projection device that projects a light beam along a width direction in the vicinity of the comb plate
Data Source
AI summary
An automatic conveyor device including an entrance platform footboard, an exit platform footboard, and a series of steps running in a loop between the entrance platform footboard and the exit platform footboard; a first comb plate and a second comb plate respectively connected to the entrance platform footboard and the exit platform footboard through a comb support plate; and a first warning device disposed in the vicinity of the entrance platform footboard or the exit platform footboard, where the first warning device includes a projection device that projects a light beam along a width direction in the vicinity of the first comb plate or the second comb plate.