Noise abatement system of fan

Abstract

The invention relates to a fan noise eliminating system which at least comprises a loudspeaker, a sensor unit and a data signal microprocessor, wherein the data signal microprocessor is provided with a signal amplifying unit, a signal conversion unit and a combination controller, the signal amplifying unit is provided with a prime amplifier and a post amplifier, the prime amplifier is electrically connected with the sensor unit, the post amplifier is electrically connected with the loudspeaker, the signal conversion unit is provided with an analog / digital converter and a digital / analog converter, the analog / digital converter is electrically connected with the prime amplifier, the digital / analog converter is electrically connected with the post amplifier, the combination controller is electrically connected with the analog / digital converter and the digital / analog converter, therefore, noise waves generated by the fan can be mutually cancelled with reverse sound waves generated by the loudspeaker to effectively reduce noise and ensure good radiating effect.

Description

technical field [0001] The invention relates to a noise elimination system, especially a fan noise elimination system. Background technique [0002] Due to the rapid development of information technology, electronic products (such as: computers, etc.) have occupied an increasingly important position in people's life and work, and have become an indispensable tool. Generally, in order to improve the operating performance of the computer, the power consumed by the electronic components (for example: central processing unit, Central Processing Unit) working inside the computer is increased. Therefore, the thermal effect generated by the electronic components is also greater, and relatively The higher the temperature inside the computer, the easier it is for the working curve to drift, resulting in unstable operation of electronic parts, easy to make the computer malfunction, and even cause the computer to crash, and in serious cases, it will burn the electronic parts working in...

AI Technical Summary

Problems solved by technology

[0005] Changes in the size design of mechanical components or improved fan materials for passive noise suppression will increase costs, and will have no effect on low-frequency noise

[0006] In order to reduce the noise of the fan, additional passive fan blades or frames are installed to make the resonance frequency of the fan appear earlier, resulting in a reduction in the life of the fan, and damage to the electronic components inside the computer due to the resonance

[0007] Active noise control requires a personal computer to realize the controller, so the high unit cost does not meet the requirements

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