Microprocessor-Controlled Dispenser with Sensor and Actuator Arm
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Solution Overview
Problem
Existing diffusion devices lack versatility and user control for dispensing volatile materials in various environments beyond restrooms, such as living rooms, offices, and outdoor spaces.
Innovation Solution
A microprocessor-controlled dispenser with a sensor and actuator arm that allows for timed, motion-sensitive, and user-selectable operation modes, enabling adjustable spray intervals and lockout periods, along with visual and tactile feedback for user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a predefined operating schedule is used with startup delay and sleep periods, then the device operates automatically with reduced user intervention, but the device cannot provide immediate confirmation of functionality and lacks adaptability to different environments
Solution Approach 1:
The dispenser transitions between different operational states (startup, active, sleep, lockout) with dynamically adjusted timing parameters. The microprocessor controls the duration of sleep periods and lockout periods, allowing the system to adapt its behavior based on environmental conditions and user preferences, resolving the contradiction between automated operation and environmental adaptability.
Solution Approach 2:
The system allows modification of operational parameters including sleep period duration, lockout period duration, and sensitivity thresholds. These parameter changes enable the dispenser to be customized for different environments (restrooms, living rooms, offices, outdoor areas) while maintaining automated operation, thus resolving the contradiction between automation and adaptability.
2Reliability
If a long startup delay period is implemented, then the device has time to initialize components, but the user experience is degraded due to delayed confirmation of device functionality
Solution Approach 1:
The dispenser incorporates LED indicators that provide visual feedback to users during the startup sequence. The LEDs indicate when the device is initializing, when it is ready for use, and when it is in sleep mode. This feedback mechanism maintains reliability by ensuring proper initialization while improving ease of operation by immediately informing users of the device's operational state, resolving the contradiction between component initialization and user feedback.
3Ease of operation
If motion-sensitive operation is enabled in all environments, then the device responds to user presence, but excessive spraying occurs in high-traffic areas leading to waste of volatile material
Solution Approach 1:
The dispenser implements periodic spray cycles with configurable intervals rather than continuous motion-responsive spraying. The lockout period prevents multiple sprays in rapid succession, while the sleep period reduces overall spraying frequency. This periodic action maintains ease of operation by still responding to motion events but reduces volatile material waste by limiting the total number of sprays, resolving the contradiction between motion-responsive dispensing and material conservation.
4Ease of operation
If multiple spray cycles are performed in response to single motion detection, then user convenience is improved, but the device consumes more energy and dispenses excessive volatile material
Solution Approach 1:
The system allows configuration of the number of sprays per motion detection event, enabling users to select between conservative (fewer sprays) and liberal (more sprays) modes. This partial action approach provides flexibility: users can choose 1-3 sprays based on their preferences and environmental conditions, balancing ease of operation with energy consumption and volatile material usage, thus resolving the contradiction between spray duration and energy consumption.
Data Source
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AI summary
A method of operating a dispensing unit including the steps of applying a power source to a dispensing unit that includes a container and performing a startup procedure in response to applying the power source. The startup procedure includes performing an activation sequence that discharges a fluid from the container. The method further includes the step of performing an active mode procedure after the startup procedure without providing a lockout period therebetween. The active mode procedure includes activating a motion sensor associated with the dispensing unit, performing an activation sequence that discharges the fluid from the container when the motion sensor detects motion, and performing a transition procedure.