Automatic Waste Container Pressure Sensors for Pet Access Prevention
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Solution Overview
Problem
Existing automatic waste containers fail to prevent pets, especially smaller animals, from accessing hazardous materials in the trash by merely leaning against the container, leading to potential harm and mess.
Innovation Solution
An automatic waste container equipped with pressure plate sensors on the front and surrounding areas that detect when a pet leans against it, triggering the sensor to prevent the lid from opening, thereby preventing access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If accelerometers or manual latches are used to lock the lid, then the waste container can prevent pets from opening it by tipping or leaning, but these mechanisms are not suitable for automatic opening waste containers where smaller pets merely lean against the container
Solution Approach 1:
The patent replaces mechanical locking mechanisms (accelerometers, manual latches) with an automated sensor-based system. Pressure-sensitive plates detect pet contact and trigger a motor to close the lid, eliminating the need for manual operation or tipping-based detection. This substitution enables the system to respond automatically to various pet sizes and contact methods.
Solution Approach 2:
The waste container system performs self-protection without human intervention. The pressure-sensitive plates and motorized lid mechanism automatically detect when a pet attempts to open the container and execute the closing action autonomously. The system serves itself by monitoring and responding to pet contact, eliminating the need for manual latches or continuous human supervision.
2Ease of operation
If the waste container is designed to be automatically opening for convenience, then ease of operation is improved, but smaller pets can still open it by leaning against the container
Solution Approach 1:
The system takes preliminary protective action before a pet can access hazardous materials. When pressure-sensitive plates detect contact from a pet attempting to open the container, the motor immediately activates to close the lid, preventing access before the pet can reach inside. This preliminary response protects against harmful factors while maintaining automatic opening functionality for legitimate use.
Solution Approach 2:
The waste container incorporates feedback through pressure-sensitive plates that continuously monitor contact on the container surface. When pet contact is detected, the system receives feedback and automatically adjusts the lid position by activating the motor. This feedback mechanism allows the container to respond in real-time to pet attempts while maintaining ease of operation for normal opening.
3Reliability
If pressure plate sensors are added to detect pet contact, then the ability to prevent pet access is improved, but the device complexity increases
Solution Approach 1:
The waste container divides the detection function into multiple pressure-sensitive plates positioned at strategic locations on the container surface. Each plate independently detects contact in its specific area, and the signals are processed by the control circuit. This segmentation allows the system to achieve reliable pet detection without requiring a single complex sensor, distributing the detection function across multiple simple components.
Solution Approach 2:
The pressure-sensitive plates serve multiple functions: they detect pet contact for protection, confirm user presence for opening operation, and can potentially detect the type of contact (light touch vs. strong pressure). The same sensor components contribute to both opening control and pet prevention, making the added complexity worthwhile through multi-functionality.
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
Effectively prevents pets from opening the waste container by leaning, minimizing exposure to harmful materials and reducing mess, ensuring safer and cleaner environments.
Implementation Method 1
The automatic waste container has a series of pressure plate sensors on the front of the waste container as well as on the areas surrounding the sensor
Data Source
AI summary
A system and method for a waste container with a lid that opens automatically for a user but senses when a pet such as a dog or cat tries to open it by standing up and leaning against the waste container, whereby the automatic waste container has a series of pressure plate sensors on the front of the waste container as well as on the areas surrounding the sensor such that when the pressure plate sensors are engaged the sensor on the waste container turns off so the dog or cat can't open the waste container by putting their paw or face over it.