QR Code Position Detection for Door Status Monitoring

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Solution Overview

Problem

Surveillance cameras with image recognition functions, which use AI models for detecting abnormal conditions, face high computation loads, necessitating a method to reduce processing requirements.

Innovation Solution

A door status detecting method and device using at least one QR code, where a camera unit monitors a door with QR codes, and a processing unit determines the door's status based on the QR code's position, eliminating the need for an AI model and reducing computation loads.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an AI model is used for image recognition to detect abnormal conditions, then the detection capability is improved, but the computation load increases

Engineering Contradiction:

Improvedetection capabilityVSAvoidcomputation load

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent extracts the essential detection information (door status) from the complex image recognition task by using QR code position detection instead of full AI-based image analysis. This removes the computationally intensive AI model while retaining the core detection functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the expensive and complex AI model with a simple, lightweight QR code position detection algorithm. This simpler approach consumes significantly less computational resources while achieving the same door status detection goal.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Reliability

If an AI model is used for image recognition, then the abnormal condition detection is improved, but the device complexity increases

Engineering Contradiction:

Improveabnormal condition detectionVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts only the necessary information (QR code position) from the surveillance scene, eliminating the need for complex AI models. This simplifies the device while maintaining detection effectiveness for door status monitoring.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the complex AI-based image recognition system with a simpler geometric analysis approach that detects QR code positions and determines door status based on spatial relationships, thereby reducing device complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS11776381B1Door status detecting method and door status detecting device

Publication Date: 2023.10.03 IRONYUN INC

AI summary

A door status detecting method by using at least one QR code is executed by a door status detecting device including a camera unit and a processing unit. The camera unit is utilized to monitor a door having at least one QR code. The processing unit receives at least one monitoring frame of a monitoring video from the camera unit, and the processing unit further determines whether the door status of the door is at a closed status according to a position of the at least one QR code in the at least one monitoring frame. Since the processing unit utilizes the position of the at least one QR code to determine the door status, the processing unit does not need to include an Artificial intelligence (AI) model to detect the abnormal conditions. Therefore computation loads of the process unit can be reduced.