Smart Hazard Detector Placement Testing for Reliable Alarm Settings

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Solution Overview

Problem

Existing hazard detectors lack guidance during installation and do not adapt settings based on specific locations within a residence, potentially leading to suboptimal placement and false alarms.

Innovation Solution

A smart hazard detector that includes a diagnostic component and processing system to test its placement and adjust settings based on the installation location, providing notifications and recommendations for optimal installation and feature configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hazard detectors are installed without placement testing and location-based adaptation, then installation process is simple and quick, but detection reliability and effectiveness deteriorate due to suboptimal placement

Engineering Contradiction:
Improvedetection reliabilityVSAvoidinstallation complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system performs placement testing and environmental assessment during the installation phase before the detector enters normal operation. The processing system executes test sequences that evaluate sensor responses to simulated hazard conditions at the specific installation location, determining optimal alarm thresholds and sensitivity settings in advance. This preliminary action ensures detection reliability is optimized for the specific location without adding complexity to ongoing operation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system provides real-time feedback during installation by analyzing test results and communicating placement quality to the installer through visual or digital interfaces. The processing system compares measured environmental parameters against ideal ranges and guides the installer to adjust detector position or orientation. This feedback loop enables non-expert installers to achieve optimal placement without requiring specialized knowledge, resolving the contradiction between reliability and installation complexity.

Inventive Principle:
Principle #23Feedback

2Reliability

If hazard detectors use fixed alarm thresholds regardless of location, then device operation is simple, but false alarms increase due to environmental variations

Engineering Contradiction:
Improvealarm accuracyVSAvoidsettings complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system implements location-specific detection parameters by measuring environmental baseline conditions during installation testing and configuring alarm thresholds tailored to that specific location. Different rooms or mounting positions receive customized sensitivity settings based on their unique characteristics such as ambient temperature, humidity, air flow patterns, and background particulate levels. This local quality approach ensures each detector operates optimally for its specific environment rather than using universal fixed thresholds.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The processing system automatically adjusts detection parameters including alarm thresholds, sensitivity levels, and response time constants based on environmental measurements taken during placement testing. The system modifies these parameters dynamically according to the measured baseline conditions without requiring manual configuration by the installer. This automatic parameter adaptation reduces false alarms caused by environmental variations while keeping the device operationally simple for end users.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If hazard detectors implement comprehensive test sequences during installation, then detection effectiveness is optimized, but installation time and user burden increase

Engineering Contradiction:
Improvedetection effectivenessVSAvoidinstallation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system implements a tiered testing approach where essential placement verification tests are performed to achieve sufficient detection effectiveness without executing every possible test sequence. The processing system identifies the minimum necessary tests based on detector type and installation location category, performing only those critical assessments needed to ensure adequate performance. This partial action approach achieves acceptable optimization without the time cost of exhaustive testing.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The system performs self-testing and self-configuration during installation, automatically executing test sequences and adjusting parameters without requiring continuous user intervention or interpretation. The processing system guides the installer through standardized procedures and automatically processes test results, eliminating the need for expert analysis or manual configuration. This self-service capability maintains high detection effectiveness while reducing the skilled labor time and user burden associated with complex installation procedures.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS9183736B2Smart-home hazard detector providing sensor-based device positioning guidance
Publication Date: 2015.11.10 GOOGLE LLC
  • US9183736B2 patent drawing
  • US9183736B2 patent drawing
  • US9183736B2 patent drawing

AI summary

A particular smart hazard detector may itself function as a guide during a process of installation of the same at an installation location. Additionally, the installation location of the particular smart hazard detector may play a central role in how various settings of the smart hazard detector are defined and adjusted over time.