Room Privacy Device Using Door Sensor and Sound Detection
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Solution Overview
Problem
Conversations in private rooms are often not kept confidential due to open doors, allowing sound to be overheard from adjacent areas, despite the availability of privacy rooms, as individuals may not close the doors, leading to potential breaches in privacy and disturbance to others.
Innovation Solution
A room privacy device equipped with a door sensor, microphone, and processor that sounds an audible alarm when the door is open and sound is detected, ensuring privacy by prompting occupants to close the door, with features like speech detection and customizable alarm settings to prevent false triggers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a door sensor and microphone system is installed to detect open doors and sound, then privacy protection is improved, but device complexity increases
Solution Approach 1:
The patent combines a door sensor, microphone, processor, and speaker into a single integrated privacy monitoring device. This merging of multiple functional components (door status detection, sound detection, signal processing, and audible alarm) into one unit achieves privacy protection while managing device complexity through integration rather than separate distributed components.
Solution Approach 2:
The device performs multiple functions: detecting door status, capturing sound, analyzing speech patterns, determining privacy violations, and providing audible alarms. This multi-functionality consolidates what would otherwise require separate systems into a single device, improving privacy monitoring capability while the integrated design helps manage overall system complexity.
2Measurement precision
If sound detection sensitivity is increased to detect all sounds, then privacy monitoring accuracy is improved, but false alarms increase
Solution Approach 1:
The system dynamically adjusts detection parameters by analyzing multiple characteristics of sound waves including frequency spectrum, amplitude, duration, and temporal patterns. By changing and evaluating multiple parameters simultaneously rather than relying on a single sensitivity threshold, the system achieves accurate detection of conversations while filtering out false alarms from transient or non-conversational sounds.
Solution Approach 2:
The processor continuously monitors sound characteristics and uses feedback loops to analyze patterns over time. By evaluating whether detected sounds meet predefined criteria for conversations (such as sustained duration, specific frequency ranges, and conversational patterns), the system refines its detection accuracy and reduces false alarms through iterative analysis and adaptive thresholding.
3Reliability
If the alarm sounds immediately when door is open and sound is detected, then privacy protection is improved, but disturbance to others increases
Solution Approach 1:
The system performs preliminary analysis of the sound signal before triggering the alarm. It pre-evaluates characteristics such as sound type, duration, volume, and contextual patterns to determine whether the sound represents a genuine privacy violation. This preliminary action filters out false triggers and ensures the alarm only sounds when actual conversations are detected with the door open, reducing unnecessary noise disturbance while maintaining privacy protection.
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 maintains conversation privacy and reduces noise disturbance by ensuring doors are closed, enhancing confidentiality in healthcare, legal, and office settings while minimizing false alarms through targeted sound detection.
Implementation Method 1
a door sensor for detecting whether a door is open
Implementation Method 2
a microphone for capturing sound
Implementation Method 3
a speaker for providing an audible alarm
Data Source
AI summary
A room privacy device sounds an audible alarm when a door to a room is not closed and sound is detected in the room. This helps prompt people in the room to close the door to maintain the privacy of the conversation and/or prevent sound in the room from disturbing others outside the room. In some embodiments, the room privacy device includes a door sensor for detecting whether a door is open, a microphone for capturing sound, and a speaker for providing an audible alarm. The room privacy device also includes a processor that causes the speaker to sound an audible alarm based on a signal from the door sensor indicative of the door being open and a signal from the microphone indicative of sound being detected.