Smart-home hazard detector providing non-alarm status signals at opportune moments
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional hazard detection devices, such as smoke and carbon monoxide alarms, often disrupt users with loud noises for low battery alerts, especially at night, and require inconvenient button pressing for testing, which is inefficient and can lead to improper placement or disablement.
Innovation Solution
Hazard detectors use ambient light conditions to trigger status checks and presentations, employing colored LEDs for silent visual alerts, allowing users to view status through gestures for further details without disturbing others, thus maintaining continuous hazard detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional hazard detectors use audible alerts (chirps) to notify users of low battery status, then users are informed of the status, but users are disturbed during sleep and may disable or relocate the device
Solution Approach 1:
The patent replaces the acoustic alert mechanism with an optical signaling system using LEDs. The hazard detector uses visual status indicators instead of audible chirps to communicate battery status and device health information. The system incorporates ambient light sensors to detect darkness and suppress or dim visual alerts during nighttime hours, thereby eliminating sleep disturbance while maintaining effective status communication.
Solution Approach 2:
The patent dynamically adjusts the parameters of status indication based on ambient conditions. The light sensor detects ambient light levels and modifies the behavior of status LEDs accordingly - reducing intensity or suppressing alerts during dark periods when users are likely sleeping, while providing full visibility during daytime. This conditional parameter adjustment resolves the contradiction between effective notification and user comfort.
2Device complexity
If hazard detectors require button pressing for functionality testing, then the device structure remains simple, but testing becomes inconvenient when the device is located in hard-to-reach places
Solution Approach 1:
The patent introduces a remote computing device as an intermediary between the user and the hazard detector. The detector communicates its status and accepts testing commands through wireless communication protocols via the remote device interface. Users can initiate functionality tests, view status information, and receive notifications remotely through their computing devices, eliminating the need to physically access the hazard detector for testing while maintaining system simplicity.
3Loss of information
If hazard detectors provide continuous status monitoring, then users have real-time information about device health, but energy consumption increases
Solution Approach 1:
The patent implements periodic status monitoring instead of continuous monitoring. The hazard detector performs self-diagnostics and status checks at predetermined intervals rather than continuously. The microcontroller enters low-power sleep modes between monitoring cycles, significantly reducing battery consumption while still providing timely status information. Critical functions like hazard detection remain active, but non-critical status reporting operates periodically.
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 solution provides a non-intrusive, efficient, and continuous hazard detection system by using visual alerts that are less likely to disrupt users, ensuring timely battery replacement and maintaining device functionality without the need for loud noises or inconvenient button pressing.
Implementation Method 1
a light sensor that detects a brightness level in an ambient environment
Implementation Method 2
outputting an indication of the status via a light of the hazard detector
Implementation Method 3
employing colored LEDs for silent visual alerts
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Inter alia, a hazard detector is disclosed. The hazard detector comprises at least one hazard detection sensor that detects a presence of at least one type of hazard; a motion detection sensor that detects motion in an ambient environment of the hazard detector; a speaker; a light that comprises multiple lighting elements; and a processing system provided in operative communication with the at least one hazard detection sensor, the motion detection sensor, and the light. The processing system is configured to select an illumination state from a plurality of illumination states, wherein each illumination state of the plurality of illumination states is assigned to a status associated with the hazard detector. The processing system is configured to cause the light to illuminate based on the selected illumination state of the plurality of illumination states. The processing system is configured to determine a gesture has been performed based on analyzing motion detected by the motion detection sensor in the ambient environment of the hazard detector following the light being illuminated based on the selected illumination state. The processing system is configured to output a detail of the status via the speaker corresponding to the illumination state in response to determining the gesture has been performed. Also disclosed is a method for a hazard detector to output a status detail.