Open Appliance Door Hazard Alerts Using EME Transducers
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Solution Overview
Problem
Existing equipment designs do not incorporate safety features to prevent accidents due to tripping or bumping on common equipment and open doors, posing a significant risk of injuries despite their widespread use.
Innovation Solution
A system utilizing electromagnetic energy (EME) transducers that generate perceptible electromagnetic radiation, including sound and visual signals, to alert individuals of potential hazards from retractable structures like open doors, combined with mechanical barriers and detectors to trigger alarms or barriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional equipment designs are used without safety features, then device complexity is low and manufacturing cost is reduced, but safety reliability deteriorates causing tripping and bumping accidents
Solution Approach 1:
The system performs preliminary detection of approaching objects using sensors before the door or equipment actually moves into the hazard zone. This allows the system to prepare and activate warnings or barriers in advance, preventing accidents before they occur while maintaining simple overall system architecture.
Solution Approach 2:
The patent introduces intermediary components such as optical sensors, acoustic sensors, and warning devices that mediate between the potential hazard (open door/equipment) and the person. These intermediaries detect hazards and communicate them to users through warnings or automated barriers, resolving the contradiction by adding safety functionality without requiring complete system redesign.
2Reliability
If EME transducers and safety systems are added to equipment, then accident prevention capability is improved, but manufacturing cost increases
Solution Approach 1:
The safety system is segmented into separate functional modules: detection sensors, control logic, and warning/barrier actuators. This segmentation allows manufacturers to choose different levels of implementation based on cost requirements, from simple optical sensors to comprehensive multi-sensor systems with automated barriers, making the technology economically viable for different application scenarios.
Solution Approach 2:
The system incorporates self-diagnostic and self-adjusting capabilities where the control unit automatically calibrates sensor sensitivity and adjusts warning parameters based on detected conditions. This reduces the need for expensive manual setup and maintenance, lowering overall manufacturing and operational costs while maintaining high accident prevention effectiveness.
3Measurement precision
If detection sensitivity is increased to detect all potential hazards, then measurement precision is improved, but false alarm rate increases reducing system reliability
Solution Approach 1:
The system uses feedback loops where sensor detections are continuously monitored and cross-validated. When an object is detected, the system analyzes multiple parameters (position, speed, trajectory) and compares them against predetermined hazard criteria. This feedback mechanism allows high detection sensitivity while filtering out false alarms through intelligent pattern recognition and threshold-based validation.
Solution Approach 2:
The control unit dynamically adjusts detection parameters such as sensitivity thresholds, detection zones, and warning triggers based on operational context. For example, the system can tighten detection parameters when the door is fully open and relax them when partially closed, or adjust based on time of day and user presence patterns. This adaptive parameter changing maintains high precision detection while minimizing false alarms through context-aware adjustments.
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
Prevents accidents by effectively alerting individuals to potential hazards, reducing the risk of tripping or bumping on open doors and other retractable structures through visible and audible warnings.
Implementation Method 1
The EME transducer can include a light emitting diode (LED), a plurality of LEDs, a two-dimensional (2D) array of LEDs, a three-dimensional (3D) array of LEDs
Implementation Method 2
The EME transducer can include a sound reproducing device such as, for example, a speaker, or a device that can convert electrical signals to sound waves that can be heard or felt by an animal
Data Source
AI summary
A system and method for rendering an alarm signal when a door of an appliance is in a hazard condition. The system includes at least one electromagnetic (EME) transducer configured to render an alarm signal when the door of the appliance is in the hazard condition, wherein the at least one electromagnetic (EME) transducer includes at least one of a motion sensor unit, a light emitter unit, a gas ejector unit, and a sound generator, and wherein the appliance is a household appliance. The system can include a controller communicatively coupled to the at least one EME transducer and configured to receive a motion detection signal from the motion sensor unit, and send a light emission signal, a gas ejection signal, or a sound signal to the at least one EME transducer.