Method and device for adjusting sound volume of buzzer

A technology of sound volume and buzzer, applied in instruments, sounding devices, etc., can solve the problems of high control cost and increased device cost, and achieve the effect of simple software design, cost saving and interface resource saving.

Pending Publication Date: 2019-04-05
SHENZHEN H&T INTELLIGENT CONTROL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, it is necessary to choose a more expensive buzzer, which increases the cost of the device, and the control cost will be higher

Method used

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  • Method and device for adjusting sound volume of buzzer
  • Method and device for adjusting sound volume of buzzer
  • Method and device for adjusting sound volume of buzzer

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Embodiment Construction

[0033] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0034] Piezoelectric buzzer is an electroacoustic conversion device. Paste the piezoelectric material on the metal sheet. When a voltage is applied to both ends of the piezoelectric material and the metal sheet, due to the inverse piezoelectric effect, the buzzer sheet will produce mechanical deformation and make a sound. In the prior art, buzzers are classified into passive buzzers and active buzzers. Active buzzers are generally...

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Abstract

The invention discloses a method and device for adjusting the sound volume of a buzzer, computing equipment and a computer storage medium. The method comprises the steps of acquiring a working frequency characteristic curve of the buzzer; setting a driving frequency of a driving circuit according to the working frequency characteristic curve; and enabling the driving circuit to drive the buzzer towork according to the driving frequency. Therefore, according to the scheme disclosed by the invention, the working frequency characteristic curve of the buzzer is utilized and the driving frequencyof the driving circuit of the buzzer is set according to the working frequency characteristic curve so as to achieve the beneficial effect that the sound volume of the buzzer is controlled only by adjusting the frequency of a PWM (Pulse Width Modulation) module instead of a duty ratio; moreover, only one triode and the PWM module are used, so that the circuit is simplified, the cost is reduced andthe probability of function disabling due to device damage of the buzzer is greatly lowered; furthermore, only one path of PWM module is output, so that the software design is simpler and the interface resource of the PWM module of a single chip is saved.

Description

technical field [0001] The invention relates to the technical field of buzzers, in particular to a method and a device for adjusting the volume of a buzzer. Background technique [0002] At present, most of the electrical products we encounter in our life are basically equipped with buzzers. The piezoelectric buzzer has the characteristics of small size, high sensitivity, low power consumption, good reliability, low cost and good performance. frequency characteristics. Therefore, it is widely used in the alarm and sounding purposes of various electrical products. The most common ones are small electronic products such as music greeting cards, electronic watches, pocket calculators, electronic doorbells and electronic toys, as well as white goods such as refrigerators and washing machines as sound-emitting devices. [0003] In the process of realizing the present invention, the inventor of the present invention found that: at present, the sound volume of many piezoelectric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K9/122
CPCG10K9/122
Inventor 孙梓博严仕培
Owner SHENZHEN H&T INTELLIGENT CONTROL
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