Scent Dispenser Fluid Level Sensing Using Electric Field Sensor Pads
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Solution Overview
Problem
Existing scent dispensers lack indicators for determining fragrance levels, require manual replacement of cartridges, and offer limited user control over scent diffusion, leading to potential over-perfuming and inefficient fragrance usage.
Innovation Solution
A system featuring vials with sensor pads and a controller that detect changes in electric fields to monitor fragrance levels, allowing remote control of scent dispensers, automatic switching between scents, and scheduling based on user location, along with data analysis for usage insights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional scent dispensers are used without sensors, then the device structure remains simple, but the user cannot determine fragrance levels and must manually check by smelling
Solution Approach 1:
The patent replaces manual mechanical checking (smelling the dispenser) with an electronic sensing system. Sensor pads detect changes in electrical properties (capacitance, resistance, or impedance) of the fragrance solution, converting physical-chemical properties into electrical signals that indicate fragrance levels, thereby eliminating the need for manual sensory inspection
Solution Approach 2:
The patent introduces sensor pads as an intermediary between the fragrance solution and the user. These sensors act as mediators that indirectly measure fragrance levels through electrical property changes, providing information without requiring direct contact or sensory inspection by the user
2Ease of operation
If manual cartridge replacement is required, then the device structure remains simple, but the user experience deteriorates due to inconvenient replacement
Solution Approach 1:
The patent implements a self-service retention system where the vial is automatically held in place through the interaction between its external dimensions and the sensor pad array. The vial's own physical properties (size, shape, electrical characteristics) enable it to be retained without additional mechanical fastening mechanisms, simplifying both replacement and retention
Solution Approach 2:
The sensor pads serve multiple functions: they detect fragrance levels through electrical property changes and simultaneously retain the vial through dimensional compatibility. This multi-functionality eliminates the need for separate retention mechanisms, allowing simple cartridge replacement while maintaining secure holding
3Ease of operation
If electronic scent dispensers output the same amount of scent over time, then the control mechanism remains simple, but the room becomes over-perfumed and users leave
Solution Approach 1:
The patent implements a feedback mechanism where sensor pads continuously monitor the fragrance solution level and electrical properties, providing real-time information to the control system. This feedback enables dynamic adjustment of scent dispensation rates, allowing the system to reduce or stop dispensing when the solution is depleted or when optimal concentration is reached, preventing over-perfuming
Solution Approach 2:
The patent transitions from static, fixed-rate scent dispensing to dynamic control based on real-time sensor data. The dispensation rate adjusts automatically according to fragrance solution levels and environmental conditions, creating a responsive system that adapts to changing conditions rather than maintaining a constant output
4Measurement precision
If sensor pads are used to detect fragrance levels, then fragrance level monitoring is enabled, but the device complexity increases due to electrical field requirements
Solution Approach 1:
The patent merges the sensing and control functions into an integrated system where sensor pads are electrically coupled to a controller that processes signals and manages dispensation. This integration consolidates multiple functions (detection, measurement, control) into a unified system, reducing overall complexity despite the addition of electrical field components
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
Enables users to remotely manage scent dispensers, receive notifications on fragrance depletion, and optimize scent diffusion, reducing waste and improving user experience by providing precise control and automation.
Implementation Method 1
The first array of sensor pads are electrically charged to produce the first array of electric fields. The controller detects changes in one or more of the electric fields of the first array as the solution is dispensed from the first vial.
Data Source
AI summary
A scent dispenser may comprise a vial retaining mechanism, a heating element, vial sensor, and a controller. The vial retaining mechanism includes a vial coupling that removeably retains a vial containing a scented solution. The includes a wick extending from a cavity of the vial through an opening of a neck of the vial. The heating element is shaped to receive and heat the wick of the vial. The vial sensor includes an array of sensor pads that are arranged in alignment with the vial retained by the vial coupling. The controller is electrically coupled to the heating element and electrically coupled to the array of sensor pads. The controller regulates a temperature level of the heating element, and receives signals from the array of sensor pads and processing the signals to determine a fluid level of the vial.