Ambient Light Sensor Night Cycle Detection for Hazard Detectors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hazard detectors, such as smoke and carbon monoxide detectors, often produce unwanted conditions like annoying alarms and intense displays due to low battery chirps and status indications, which can be bothersome to users.
Innovation Solution
A hazard detector with a light detector and processor that measures ambient light intensity to determine a night cycle, adjusting signaling device operations such as display brightness and alarm volume to minimize disturbances during this time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hazard detector provides continuous status indications and alarm signals, then the reliability of hazard detection is improved, but the user experience deteriorates due to unwanted disturbances especially during nighttime
Solution Approach 1:
The patent applies dynamics by making the signaling device operations adjustable based on ambient light conditions. The processor dynamically modifies alarm volume, display brightness, and LED indicator intensity according to whether the environment is detected as day or night, allowing the system to adapt its behavior to different temporal contexts while maintaining hazard detection reliability.
Solution Approach 2:
The patent implements parameter changes by modifying operational parameters of the signaling device based on light intensity measurements. The processor changes volume levels, display luminance, and indicator intensity parameters according to ambient light conditions, thereby reducing user disturbance during nighttime while preserving alarm functionality.
2Reliability
If the hazard detector provides continuous visual and audible signals, then the reliability of hazard notification is improved, but the harmful effects increase due to intense displays and annoying alarms during nighttime
Solution Approach 1:
The system dynamically adjusts the intensity of visual and audible signals based on ambient light detection. During nighttime conditions, the processor automatically reduces display brightness, dimms LED indicators, and lowers alarm volume, while maintaining full signaling capability during daytime, thus eliminating the need for manual user adjustments.
Solution Approach 2:
The patent changes operational parameters of the signaling device based on environmental light conditions. The processor modifies display luminance parameters, LED intensity parameters, and audio volume parameters according to the detected ambient light level, thereby reducing harmful effects during nighttime while preserving notification reliability.
3Device complexity
If the hazard detector operates with fixed signaling parameters, then the device complexity is reduced, but the adaptability deteriorates as it cannot adjust to different time periods and light conditions
Solution Approach 1:
The hazard detector performs self-service by automatically detecting ambient light conditions and autonomously adjusting its signaling parameters without requiring user intervention. The light detector continuously monitors environmental light levels, and the processor automatically determines appropriate operational modes, enabling the device to adapt to different time periods and lighting conditions independently.
Solution Approach 2:
The system implements feedback by using the light detector to continuously monitor ambient light conditions and feeding this information back to the processor. The processor then adjusts signaling device parameters based on this feedback, creating a closed-loop control system that automatically adapts to changing environmental conditions while maintaining relatively simple device architecture.
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 reduces unwanted conditions by determining a night cycle based on light intensity and adjusting the signaling device operations, enhancing user satisfaction by minimizing disturbances during nighttime.
Implementation Method 1
A light detector is provided which may be utilized to measure a light source
Data Source
AI summary
A method of operating an alarm device including a processor and a light detector, the method including for operating the light detector to sample a light intensity within an interior space a plurality of times to produce a plurality of light intensity measurements, operating the processor to determine a light intensity value, wherein the light intensity value is based upon the plurality of light intensity measurements, and operating the processor to decide whether a night cycle can be determined based on the light intensity values.