Blender Optical Interlock Detection to Prevent False Motor Actuation
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Solution Overview
Problem
Conventional blender interlock systems require physical connections, which take up space, are prone to vibration damage, and are difficult to clean, and often result in false motor actuation.
Innovation Solution
A blending system with an interlock detector using an image sensor, such as a camera, to detect indicia on the lid, ensuring the lid is properly attached before allowing motor operation, reducing the need for mechanical connections and enhancing durability and vibration isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical interlock systems with physical connections are used, then the lid can be securely attached to the container, but the system takes up extra space and is prone to vibration damage
Solution Approach 1:
The patent replaces mechanical interlock systems with an optical detection system using image sensors. The image sensor captures images of the lid and container, and image recognition algorithms determine proper assembly without requiring physical mechanical connections. This eliminates the need for mechanical arms, links, springs, or other attachments while maintaining reliable detection of lid attachment status.
Solution Approach 2:
The patent uses image copying to detect lid attachment. Instead of direct mechanical contact, the system creates visual copies (images) of the lid and container components and analyzes these copies through image recognition to determine spatial relationships and assembly status. This allows space-efficient detection without physical connection paths.
2Reliability
If mechanical interlock systems are used, then the lid position can be detected, but the system is subject to damage from motor vibration
Solution Approach 1:
The patent substitutes mechanical vibration-sensitive components with an optical imaging system. Image sensors and image recognition algorithms detect lid position and attachment status without being affected by motor vibration. The optical system remains stable and accurate even during high-vibration blending operations, eliminating the vulnerability of mechanical interlock components to vibration damage.
3Ease of operation
If mechanical interlock systems are used, then motor operation can be controlled, but the system is difficult to clean
Solution Approach 1:
The patent replaces complex mechanical interlock components with a compact optical detection system. The image sensor and associated electronics require minimal cleaning compared to mechanical arms, links, springs, and attachments that accumulate food residue. The optical system's smooth surfaces and lack of moving mechanical parts make it significantly easier to clean and maintain.
4Reliability
If mechanical interlock systems are used, then false motor actuation can be prevented, but the system complexity increases
Solution Approach 1:
The patent uses image copying and digital image recognition to detect lid attachment and prevent false motor actuation. The system captures visual information and processes it through algorithms that determine proper assembly status. This digital/optical approach is less complex than mechanical interlock systems with multiple moving parts, sensors, and mechanical linkages, while providing reliable false actuation prevention.
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 image sensor-based interlock system effectively prevents false motor actuation, reduces space usage, and improves durability by ensuring the lid is securely attached, while allowing for efficient operation and easy cleaning.
Implementation Method 1
an interlock detector comprising an image sensor... the image sensor-based interlock system
Data Source
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Figure 3A~3C
AI summary
A blending system is shown and described herein. The blending system may include a base including a motor, a blade selectively and operably engaged with the base, where the motor rotates the blade, a container having an open end and a lid configured to cover the open end. The blending system may also include an optical interlock detector that may include a camera positioned on the base and indicia positioned at a predetermined location on a lid, wherein the camera detects the indicia and position of the lid to permit operation of the blender.