Fluid Pump with Multi-Sound Whistle for Compliance Monitoring
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Solution Overview
Problem
Existing hand cleaning fluid dispensers lack effective compliance monitoring, especially for those not connected to a power source, and struggle to provide distinct sound profiles for accurate data collection and fluid dosage calculation.
Innovation Solution
The development of fluid dispensers that generate multiple sounds using pressurized air, with pressure stabilizing components and sound generators, allowing for improved sound profiles that can be distinguished from environmental noise, enabling accurate compliance monitoring and fluid dosage calculation without requiring an electric power source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single sound generator is used in fluid dispensers, then the device complexity is reduced, but the measurement precision of compliance monitoring deteriorates because single sounds are difficult to distinguish from environmental noise
Solution Approach 1:
The sound generation function is segmented into multiple independent sound generators (first sound generator and second sound generator), each producing distinct sounds at different time periods. This segmentation allows the monitoring system to distinguish multiple discrete sound events, significantly improving measurement precision for compliance monitoring while maintaining manageable device complexity through modular design
Solution Approach 2:
The sound generators operate in periodic fashion with temporally separated blasts - the first sound generator produces sound during a first time period, and the second sound generator produces sound during a second time period. This periodic action creates a distinctive temporal sound profile that enhances detectability and measurement accuracy without requiring continuous operation, thereby balancing precision improvement with energy efficiency
2Duration of action of moving object
If pressurized air is delivered continuously to sound generators, then the sound output is sustained, but the ability to produce distinct temporally separated sounds deteriorates
Solution Approach 1:
The air pump delivers pressurized air in periodic bursts rather than continuous flow - a first burst during a first time period to the first sound generator, and a second burst during a second time period to the second sound generator. This periodic delivery pattern ensures each sound generator receives sufficient air pressure for adequate sound duration while maintaining temporal separation that creates distinct sound profiles for accurate monitoring
Solution Approach 2:
The air delivery system is segmented into separate delivery paths for each sound generator, with the air pump capable of directing pressurized air to the first sound generator during the first time period and to the second sound generator during the second time period. This segmentation enables independent control of each sound event, ensuring both sufficient duration and distinct temporal separation
3Power
If air pressure in the air pump chamber is increased to improve sound generation, then the sound output intensity is improved, but the reliability of consistent sound profiles deteriorates due to pressure fluctuations
Solution Approach 1:
A pressure sensor provides feedback about the air pressure in the air pump chamber to the control system. Based on this feedback, the control system adjusts the operation of the air pump to maintain air pressure within a predetermined range. This feedback mechanism ensures consistent sound profile generation across multiple activations while preventing pressure-related variations that would compromise reliability, all while maintaining sufficient pressure for adequate sound output intensity
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 enhances the accuracy and comprehensiveness of compliance monitoring data by providing distinct sound profiles that can be used to calculate fluid dosage and movement parameters, improving the detail and reliability of monitoring data collection.
Implementation Method 1
an air pump that delivers both of the two streams of air through the sound generator mechanism on movement of the actuator in the cycle of operation in the first stroke
Implementation Method 2
a sound generator mechanism which generates two sounds on movement of the actuator in the cycle of operation... configured to produce each sound from a respective one of two streams of air passing through the sound generator mechanism
Data Source
AI summary
A fluid dispenser with a fluid pump for dispensing fluid on movement of an actuator, and an air pump for delivering a stream of air through at least one sound generator on movement of the actuator. The sound generator produces at least two sounds as the actuator is moved from a first position to a second position, with each sound produced in a different time period during a cycle of operation, or differing from the other sound in respect of one or more detectable sound characteristics, such as duration, frequency, temporal alignment, amplitude, and/or timbre. The time period of each sound is a function of the relative location of the actuator between the first and second positions.