Capacitive Rodent Sensor with Height-Selective Conductive Member
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Solution Overview
Problem
Existing pest-management apparatuses lack effective mechanisms to detect rodents climbing over separators while minimizing false detections from smaller insects.
Innovation Solution
The apparatus features a chamber with a lid and base that define an entrance opening, separators that divide the chamber into entry and capture portions, and an electrically-conductive member coupled to a capacitive sensor to detect rodents climbing over the separators. The design includes a configuration where the conductive member is spaced above the chamber floor to allow insects to pass underneath, reducing false detections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a capacitive sensor is used to detect rodents climbing over separators, then rodent detection capability is improved, but false detections from smaller insects increase
Solution Approach 1:
The patent applies local quality by creating a differentiated detection system where the conductive member is positioned at a specific height above the chamber floor. This localized positioning creates different detection zones: the upper zone detects rodents climbing over separators while the lower zone allows insects to pass undetected. The conductive member's specific placement provides selective detection capability based on the vertical position of different pest types.
Solution Approach 2:
The patent introduces a vertical dimension to the detection system by positioning the conductive member at a specific height above the chamber floor. This creates a height-based discrimination mechanism where rodents, which must climb over separators to access bait, will contact or approach the conductive member at upper levels, while smaller insects can crawl underneath at lower levels without triggering detection.
2Reliability
If separators are placed to prevent rodent access to bait, then bait protection is improved, but rodent detection capability deteriorates
Solution Approach 1:
The patent introduces an intermediary element - the conductive member - that bridges the gap between the separator structure and the detection system. The conductive member is positioned above the separator, allowing it to detect rodents as they interact with the separator structure without interfering with the separator's primary function of blocking rodent access to the bait container.
Solution Approach 2:
The patent segments the chamber into distinct functional zones using the separator structure. The separator divides the chamber into a bait protection zone (below the separator) and a detection zone (at or above the separator level). This segmentation allows the system to simultaneously achieve bait protection through the separator while maintaining rodent detection capability through the conductive member positioned in the upper detection zone.
3Measurement precision
If the conductive member is positioned close to the chamber floor to detect all pests, then detection sensitivity is improved, but insect false detections increase
Solution Approach 1:
The patent applies preliminary action by pre-positioning the conductive member at an optimized height above the chamber floor before operation. This predetermined positioning is designed based on the size differences between rodents and insects, creating a detection threshold that automatically discriminates between target pests (rodents) and non-target pests (insects). The height is set in advance to allow smaller insects to pass underneath without contact while ensuring rodents climbing over separators will contact or approach the conductive member.
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
This solution effectively captures rodents by requiring them to climb over separators, while minimizing false detections from insects, thus enhancing the accuracy and efficiency of the pest-management system.
Implementation Method 1
an electrically-conductive member configured to be coupled to a capacitive sensor to detect a rodent climbing over the one or more separators
Data Source
AI summary
Pest-management apparatuses (e.g., stations), such as, for example, that can be configured to permit a rodent to enter and retrieve a bait and/or become trapped (e.g., via adhesive or a snap-trap).