Portable Smoke Detector with Segmented Head and Base
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Solution Overview
Problem
Residential fires, particularly cooking and cigarette-related fires, often go undetected due to the limitations of traditional smoke detectors, which can lead to rapid spread and are inconvenient for smokers, as they frequently trigger false alarms and require difficult repositioning.
Innovation Solution
A microprocessor-based, portable smoke detector that provides two-level audible notifications for tilting or bumping and automatically alerts users to smoke sources, with programmable timing and sensitivity, and includes a battery status notification, utilizing infrared sensors and a heat-resistant design for enhanced sensitivity and portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ceiling mounted smoke detectors are used, then fire detection coverage is provided, but they are difficult to disarm and reposition
Solution Approach 1:
The smoke detector is divided into a head unit and a separate base unit. The head unit can be easily removed from the base unit, allowing users to disarm and reposition the detector without difficulty. This segmentation enables the detector to be moved from ceiling mounting to portable use.
Solution Approach 2:
The detector transitions from a static ceiling-mounted configuration to a dynamic portable design. The base unit provides a stable mounting surface while the head unit can be easily detached and repositioned, adapting the detector to different locations and needs.
2Reliability
If smoke detectors are placed close to the oven or range, then early fire detection is achieved, but false alarms increase
Solution Approach 1:
The detector uses adjustable sensitivity parameters that can be customized for different environments. Users can modify the alarm threshold to balance early detection capability with resistance to false alarms from cooking activities.
Solution Approach 2:
The microprocessor continuously monitors sensor inputs and uses feedback mechanisms to distinguish between actual fire conditions and normal cooking smoke. This intelligent feedback system reduces false alarms while maintaining early detection sensitivity.
3Adaptability or versatility
If ceiling mounted smoke detectors are used, then fire detection is provided, but they cannot be easily moved to locations of temporary interest
Solution Approach 1:
The separation of the head unit from the base unit enables easy relocation. Users can detach the head unit and move it to different locations such as smoking rooms, BBQ areas, or crafts rooms without complex disassembly or installation procedures.
Solution Approach 2:
The detector is designed to serve multiple functions and locations. The portable design allows it to be used in various temporary locations beyond traditional ceiling mounting, including smoking areas, outdoor BBQs, and craft rooms, making it universally applicable to different fire hazards.
4Object-generated harmful factors
If smokers disable ceiling mounted smoke detectors, then false alarm reduction is achieved, but fire safety protection is compromised
Solution Approach 1:
The detector provides adjustable sensitivity settings that allow users to optimize the alarm threshold for their specific environment. This enables smokers to reduce false alarms from cooking while maintaining adequate fire safety protection through customized parameter settings.
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 device offers effective early fire detection and prevention, reducing false alarms and enabling easy repositioning, while ensuring timely alerts and battery management, thus providing comprehensive protection against fire hazards.
Implementation Method 1
an optical sensor, such as a photodetector or photodiode, positioned to receive light reflected from the ball
Implementation Method 2
utilizing infrared sensors and a heat-resistant design for enhanced sensitivity
Data Source
AI summary
The present invention is a battery powered, portable microprocessor based early warning alarming smoke detector. It provides the user two different time limited unattended alarms, as well an alarm for a tipped smoke detector; an alarm for a bumped smoke detector; an alarm based on nearby or lower elevation smoke by either of the two smoke detection devices; and a low power alarm. It offers “full protection” for most of the likely scenarios encountered by residential users that could result in a fire. Since the device is microprocessor controlled, the timing intervals and magnitude of the different alarm notifications can be preprogrammed as well as the sensitivity of the smoke detector devices.