Atomizer driving frequency adjusting circuit with external oscillation and testing method
A technology of driving frequency and adjusting circuit, applied in the field of frequency adjustment circuit of atomizer, can solve the problems of difficulty in ensuring the consistency of the working frequency of atomizer, being easily affected by temperature and humidity, and having a small frequency adjustment range, so as to ensure Adjustability and stability, high consistency, the effect of ensuring stability
Active Publication Date: 2017-03-15
HEFEI CHIPSEA ELECTRONICS TECH CO LTD
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Problems solved by technology
The method is to send a preset frequency and more than one detection frequency through the microcomputer, then compare the preset frequency and detection frequency with the signal in the circuit, and finally select one of the frequencies as the best working frequency of the piezoelectric element. In this way, the resonance frequency adjustment of the piezoelectric element is automatically completed. In fact, the frequency adjustment range is very small, and only a few fixed frequencies can be selected, and it is easily affected by temperature and humidity, so it is difficult to guarantee the working frequency of the atomizer. consistency
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0041] figure 1 Shown is the drive frequency adjustment circuit of the external oscillating atomizer implemented by the present invention. As shown in the figure, the adjustment circuit includes a microcontroller and an oscillation signal input module.
[0042] Among them, the microcontroller supports external ERC input associated with PWM output, and is responsible for the interaction of adjustment information and the output of the driving frequency of the atomizer.
[0043]The oscillating signal input module is responsible for adjusting the outputted external oscillating equivalent signal accord...
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The invention discloses an atomizer driving frequency adjusting circuit with external oscillation and a testing method. The circuit comprises a microcontroller and an oscillation signal input module, the microcontroller supports external ERC input to be related to PWM output and is in charge of interaction of adjusting information and output of the atomizer driving frequency, the oscillation signal input module is in charge of adjusting output external oscillation equivalent signals according to the requirement of the atomizer driving frequency adjusting, and the oscillation signal input module is connected with the microcontroller. The atomizer driving frequency adjusting circuit can adjust the external oscillation frequency of the microcontroller and then adjust the output atomizer PWM driving frequency, the driving frequency can be flexibly adjusted according to the power requirement in the working process of an atomizer, the stability of frequency adjusting is guaranteed, and the atomizer driving frequency adjusting circuit has the beneficial effects of being high in reliability and consistency.
Description
technical field [0001] The invention belongs to the technical field of humidifiers, in particular to a frequency adjustment circuit and method for an atomizer used for air humidification. Background technique [0002] There are frequency output modules in the atomizer control circuit. For many years, there have been circuit forms on the market that use discrete devices (without microcontrollers) for frequency output; there are also circuit forms that use microcontrollers combined with external oscillators for frequency output. [0003] In the circuit form of frequency output management using discrete devices, in the production process, the frequency is easily affected by the parameters of components, and the consistency is not good; in the process of work, with the change of working temperature and humidity, many components The performance of the device is affected, and the frequency stability is also weak. At the same time, this kind of circuit needs to be manually adjuste...
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IPC IPC(8): F24F11/00
CPCF24F11/0008
Inventor 林俊盛
Owner HEFEI CHIPSEA ELECTRONICS TECH CO LTD