Piezoelectric Atomiser Control Circuit Alternating Voltage Cycles
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Solution Overview
Problem
Existing battery-operated, portable atomisers with piezoelectric vibration devices have limited service duration due to high electric energy consumption, necessitating a more efficient vibration process to extend battery life.
Innovation Solution
An electronic control circuit that alternates between low-voltage and high-voltage excitation cycles for the piezoelectric element, utilizing a microcontroller to adjust the frequency and duration of impulses, reducing energy consumption and optimizing atomisation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-voltage excitation is continuously applied to the piezoelectric element, then atomisation flow rate is maintained, but electric energy consumption increases and battery life decreases
Solution Approach 1:
The patent applies periodic alternation between high-voltage and low-voltage excitation cycles to the piezoelectric element. During high-voltage cycles, the piezoelectric element operates at optimal frequency for high atomisation flow rate. During low-voltage cycles, energy consumption is reduced while the piezoelectric element maintains residual vibration. This periodic switching resolves the contradiction by providing high productivity only when necessary while reducing overall energy consumption to extend battery life.
Solution Approach 2:
The patent dynamically adjusts the excitation voltage applied to the piezoelectric element based on operational requirements. The control circuit switches between high-voltage and low-voltage modes, and can also adjust the operating frequency of the piezoelectric element dynamically. This dynamic adaptation allows the system to optimize between atomisation performance and energy consumption in real-time, resolving the static contradiction between maintaining high flow rate and reducing power consumption.
2Reliability
If high-voltage excitation is applied to ensure optimal oscillation power, then atomisation performance is maintained, but service duration without battery replacement decreases
Solution Approach 1:
The patent implements periodic alternation between high-voltage excitation (for optimal atomisation performance) and low-voltage excitation (for energy conservation). The high-voltage cycles maintain reliable atomisation performance when needed, while the low-voltage cycles extend battery service duration. This periodic strategy ensures that the system maintains reliability during active cycles while significantly extending overall service duration through energy-saving cycles.
Solution Approach 2:
The patent changes the electrical parameters (voltage and frequency) applied to the piezoelectric element based on operational phase. During high-performance requirements, high voltage and optimal frequency are applied. During energy-conservation phases, voltage and frequency are reduced. This parameter modulation allows the system to maintain reliability when needed while extending service duration through reduced power consumption during non-critical periods.
3Productivity
If the piezoelectric element operates continuously at optimal frequency, then atomisation efficiency is maximized, but overheating occurs and component lifespan decreases
Solution Approach 1:
The patent applies periodic cycles of high-voltage excitation followed by low-voltage or rest periods to the piezoelectric element. During high-voltage cycles, the element operates at optimal frequency for maximum atomisation efficiency. During low-voltage cycles, the reduced power input allows the piezoelectric element to cool down, preventing overheating and extending component lifespan. This periodic on-off cycling resolves the contradiction between maintaining high efficiency and preventing thermal damage.
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
This approach significantly extends the battery life by reducing energy consumption and maintaining consistent atomisation performance, with low-voltage cycles ensuring even liquid distribution and high-voltage cycles enhancing atomisation flow rates, while minimizing condenser discharge and recharge power consumption.
Implementation Method 1
an alternate-current power generator connected to a piezoelectric element, so as to cause the subsequent fast contraction and expansion thereof. The piezoelectric element... is coupled with a finely perforated, flexible membrane
Implementation Method 2
a condenser (C1) connected between said power generator input and ground, said power generator being supplied by a battery (1) having a positive and a negative terminal
Implementation Method 3
the atomisation of the liquid which has reached by capillarity the membrane through the holes provided in the same
Data Source
AI summary
A liquid atomizer (1) with battery-powered (1) piezoelectric vibration device (4), of the type timed to occur between alternate activation cycles and rest cycles and including a first electronic supply circuit (2) with an impulse current generator (9) at a relatively high voltage and a second supply circuit (5a) of the piezoelectric vibration device (4) at a relatively low voltage, as well as a switch device (10, 11) apt to connect in alternate phases the supply of the piezoelectric vibration device (4)—in a same actuation cycle—to the first circuit and to the second circuit. An actuation method of the atomizer is also described.