Adjustable Detection Distance Arrangement for Induction Trash Container Cover
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Solution Overview
Problem
Existing trash containers with active infrared sensors have a non-adjustable sensing distance, leading to improper operation in different environments and varying user needs, and are susceptible to signal interference due to analog voltage signal comparison.
Innovation Solution
A trash container with an adjustable detection distance arrangement, utilizing a microcomputer control chip with integrated digital conversion to minimize interference and allow user customization, featuring an infrared emitter, receiver, amplifier, digital converter, and a set button for adjusting the detection distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the sensing distance is fixed at a predetermined value, then the circuit operation is simple, but the trash container cannot adapt to different user needs and environments
Solution Approach 1:
The patent implements adjustable sensing distance by making the detection threshold dynamic rather than fixed. The microcomputer control chip allows users to modify the sensing distance parameter through button operations, enabling the system to adapt to different environments and user requirements while maintaining a relatively simple overall circuit structure.
Solution Approach 2:
The patent changes the detection threshold parameter to achieve adjustable sensing distance. By modifying the threshold value stored in the microcomputer control chip, the system can adapt to different user needs without requiring complex additional hardware circuits.
2Reliability
If analog voltage signal comparison is used, then the circuit configuration is simple, but the system is susceptible to signal interference and has unstable operation
Solution Approach 1:
The patent replaces the mechanical/analog voltage comparison system with a digital signal processing system. The microcomputer control chip performs digital comparison of detection signals against stored thresholds, which provides superior anti-interference capability and operational stability compared to analog methods, while integrating multiple functions into a single chip to manage complexity.
Solution Approach 2:
The patent introduces a digital signal processing intermediary (the microcomputer control chip) between the infrared detection and the lid control. This intermediary converts analog detection signals to digital form and performs stable digital comparison operations, filtering out signal interference that would affect direct analog comparison systems.
3Force
If the sensing distance is set to be long with high sensitivity, then the detection range is extended, but mis-operation occurs more frequently
Solution Approach 1:
The patent implements feedback control through adjustable sensing distance settings. Users can adjust the detection threshold to match their specific needs, providing feedback between the system's detection capability and actual usage requirements. This prevents mis-operation by allowing optimization of sensitivity for each installation environment.
Solution Approach 2:
The patent makes the detection sensitivity dynamic through adjustable thresholds. Rather than having fixed high sensitivity that causes mis-operation, the system allows users to adjust the sensing distance parameter to achieve appropriate sensitivity levels for their specific needs, balancing detection range with operational accuracy.
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
Enables personalized sensing distance settings, reduces circuit interference, simplifies circuit configuration, lowers manufacturing costs, and enhances operational stability by converting analog to digital signal comparison.
Implementation Method 1
upwardly emitting an infrared signal by an infrared emitting tube through a sensing window
Implementation Method 2
receiving the reflected infrared signal as a weak signal by an infrared receiving tube located underneath the sensing window
Data Source
AI summary
A trash can includes an induction actuated cover being actuated to move between a closed position and an opened position in response to an object, an actuation module being activated at one of an operation mode and a setting mode, and an adjustable detection distance arrangement. At the operation mode, the induction actuated cover is moved from the closes position to the opened position when the object is detected above an induction window within a detection range at a preset detection distance. The adjustable detection distance arrangement is arranged to store a desired detection distance at the setting mode. The desired detection distance is selectively adjusted from the induction window and is defined as a distance of the object placed above the induction window. The desired detection distance is stored to replace the preset detection distance for actuating the induction actuated cover at the operation mode.