CN204856134U - Buzzer volume controlling means and domestic appliance - Google Patents
Buzzer volume controlling means and domestic appliance Download PDFInfo
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- CN204856134U CN204856134U CN201520616289.XU CN201520616289U CN204856134U CN 204856134 U CN204856134 U CN 204856134U CN 201520616289 U CN201520616289 U CN 201520616289U CN 204856134 U CN204856134 U CN 204856134U
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- hummer
- microcontroller
- resistance
- buzzer
- sound volume
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Abstract
The utility model discloses a buzzer volume controlling means and domestic appliance, the device is including buzzer BL1, first resistance R1, microcontroller and signal conditioning module, buzzer BL1's one end through first resistance R1 with the microcontroller electricity is connected, buzzer BL1's other end ground connection, microcontroller still with signal conditioning module electricity is connected. The utility model discloses can obtain buzzing volume grade according to the signal conditioning module, according to the PWM signal of buzzing volume grade to the different duty cycles of buzzer output, control the buzzing that the buzzer sent different volumes, need not change hardware circuit, just can realize the control of buzzer volume.
Description
Technical field
The utility model relates to volume controlling technique field, is specifically related to a kind of hummer sound volume control device and household electrical appliance.
Background technology
Household electrical appliance, such as, electric cooker uses hummer as microphone device usually, the conventional drive signal of hummer, the frequency signal being 50% by a dutycycle drives, but the size of its sound can not adjust, for adjustment sound size is all that change current-limiting resistance realizes usually, trouble so very, because need to change hardware circuit, and in user's use, some users like buzzing volume larger, some users like buzzing volume a little bit smaller, the mode used at present can not regulate with software again, not humane, for user's pain spot all the time.Moreover electric cooker prompt tone needs greatly a bit sometimes, sometimes need a little bit smaller, such as people is on electric cooker side, and sound wishes point, and when people leaves electric cooker, because distance is not often heard, now wishes that sound is a little bigger, also hommization not.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of hummer sound volume control device and household electrical appliance, does not need to change hardware circuit, adopts the drive singal that frequency is constant, dutycycle changes to drive hummer to send the buzzing of different volume.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
On the one hand, the utility model provides a kind of hummer sound volume control device, and described device comprises hummer BL1, the first resistance R1, microcontroller and signal-adjusting module;
One end of described hummer BL1 is electrically connected with described microcontroller by the first resistance R1, and the other end ground connection of described hummer BL1, described microcontroller is also electrically connected with described signal-adjusting module.
The beneficial effect of the device that the utility model provides is: can obtain buzzing level of sound volume according to signal-adjusting module, export the pwm signal of different duty to hummer according to buzzing level of sound volume, control the buzzing that hummer sends different volume, do not need to change hardware circuit, just can realize the control of hummer volume.
On the basis of technique scheme, the utility model can also do following improvement.
Further, described signal-adjusting module is human inductor and/or human-computer interaction interface.
Further, described human inductor is infrared inductor.
Further, described human-computer interaction interface comprises display circuit and key circuit, and described device also comprises power circuit, and described power circuit is electrically connected with described microcontroller, to power to described microcontroller.
Further, described hummer BL1 is piezo buzzer or electromagnetic buzzer; When described hummer BL1 is piezo buzzer, described device also comprises:
Second resistance R2, described second resistance R2 is in parallel with described piezo buzzer;
A common end grounding of described second resistance R2 and described piezo buzzer, another common port is electrically connected with described first resistance R1.
Described further beneficial effect is: hummer can be polytype hummer, for dissimilar hummer, can do some little improvement to circuit, can adapt to dissimilar hummer.
On the other hand, the utility model provides a kind of household electrical appliance, and described household electrical appliance comprise a kind of hummer sound volume control device.
The beneficial effects of the utility model are: the hummer sound volume control device provided can be applied in various household electrical appliance.
Accompanying drawing explanation
Fig. 1 is a kind of hummer sound volume control device schematic diagram of the utility model embodiment one;
Fig. 2 is a kind of hummer sound volume control device schematic diagram of the utility model embodiment two;
Fig. 3 is a kind of home appliance structure schematic diagram of the utility model embodiment three.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
Embodiment one, a kind of hummer sound volume control device.Below in conjunction with Fig. 1, the device that the utility model provides is described.
See Fig. 1, the device that the present embodiment provides comprises hummer BL1, the first resistance R1, microcontroller and signal-adjusting module, one end of described hummer BL1 is electrically connected with described microcontroller by the first resistance R1, the other end ground connection of described hummer BL1, described microcontroller is also electrically connected with described signal-adjusting module.Signal-adjusting module is human inductor and/or human-computer interaction interface, and wherein, human inductor is infrared inductor, and described first resistance R1 is current-limiting resistance.
When signal-adjusting module is human-computer interaction interface, this human-computer interaction interface comprises display circuit and key circuit, and the device that the present embodiment provides also comprises power circuit, and described power circuit is electrically connected with microcontroller, to power to microcontroller.The hummer BL1 provided in the present embodiment is electromagnetic buzzer.
Embodiment two, a kind of hummer sound volume control device.
See Fig. 2, the device that the present embodiment provides and the device that previous embodiment one provides similar, unique difference is that the hummer BL1 provided in the present embodiment is piezo buzzer, when hummer BL1 is piezo buzzer, the device that the present embodiment provides also comprises the second resistance R2, and described second resistance R2 is in parallel with described piezo buzzer; A common end grounding of described second resistance R2 and described piezo buzzer, another common port is electrically connected with described first resistance R1.Second resistance is in parallel with piezo buzzer, the bleeder resistance in coating-forming voltage loop.
The specific works flow process of the hummer sound volume control device provided by the utility model is: microcontroller obtains hummer level of sound volume by signal-adjusting module, according to hummer level of sound volume, microcontroller exports corresponding pwm signal by the first resistance R1 to hummer BL1, controls the buzzing (sound) that hummer BL1 sends corresponding volume.Wherein, the dutycycle of the pwm signal that microcontroller exports to hummer BL1 is corresponding with the hummer level of sound volume of setting, such as, when hummer level of sound volume reduces, to the dutycycle reduction of the pwm signal that hummer BL1 exports; Otherwise, when hummer level of sound volume raises, to the dutycycle increase of the pwm signal that hummer BL1 exports.Such as, when PWM exports 4KHz frequency, 50% duty cycle signals, now hummer volume is larger; When PWM exports 4KHz, 25% duty cycle signals, now hummer volume is less.In actual applications, the maximum duty cycle of pwm signal is no more than 50% because adopt dutycycle be the pwm signal of 50% to drive hummer BL1, the buzzing volume of hummer BL1 is enough large.
Wherein, signal-adjusting module in the present embodiment is human inductor (infrared inductor) and/or human-computer interaction interface, microcontroller obtains hummer level of sound volume by signal-adjusting module and specifically comprises: the human-induced signal sensed is transferred to microcontroller by human inductor, after microcontroller receives the human-induced signal of human inductor transmission, human-induced signal is filtered and identifies, and judge the distance (distance also namely between human body and hummer) between human body and human inductor according to the intensity of human-induced signal, then hummer level of sound volume is automatically adjusted according to the distance between human body and human inductor, such as, when recognizing the distance between human body and human inductor and being less than or equal to predeterminable range scope, namely human body is when human inductor, reduce hummer level of sound volume, such as, current buzzing volume is reduced the first predetermined quantity grade, when distance between human body and human inductor is greater than predeterminable range scope, increases hummer level of sound volume, such as, current hummer volume is raised the second predetermined level of sound volume.In addition, when the distance between human body and human inductor is less than or equal to predeterminable range scope, microcontroller can carry out acoustic-optic indicator prompting by the display circuit in human-computer interaction interface, realizes man-machine interaction.
In addition, user can also input hummer level of sound volume by the key circuit in human-computer interaction interface in microcontroller.
Embodiment three, a kind of household electrical appliance.
See Fig. 3, the household electrical appliance that the present embodiment provides comprise the hummer sound volume control device in previous embodiment one and previous embodiment two, and correlation technique feature see embodiment one and embodiment two, can not repeat them here.
A kind of hummer sound volume control device that the utility model provides and household electrical appliance, microcontroller obtains hummer level of sound volume according to signal-adjusting module, and drive hummer with the buzzing making hummer send different volume according to the pwm signal that hummer level of sound volume exports duty ratio corresponding to hummer, hummer volume can be controlled by the output of pwm signal, adopt the mode that frequency is constant, dutycycle changes to control volume; Microcontroller can obtain hummer level of sound volume in several ways, such as, can judge that the distance between human body and human inductor regulates hummer level of sound volume automatically by human-induced signal, or receive the hummer level of sound volume inputted by human-computer interaction interface, dirigibility is high; In addition, when being judged that by human-induced signal the distance between human body and human inductor arrives within the scope of predeterminable range, carrying out acousto-optic prompting, realizing man-machine interaction.
In addition, the hummer sound volume control device that the utility model provides can be applied on various household electrical appliance, also can apply to all fields of using hummer, and applicability is strong, and application is extensive.
In the description of this instructions, concrete grammar, device or feature that the description of reference term " embodiment one ", " embodiment two ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, method, device or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this instructions or example and different embodiment or example can carry out combining and combining by those skilled in the art.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a hummer sound volume control device, is characterized in that, described device comprises hummer BL1, the first resistance R1, microcontroller and signal-adjusting module;
One end of described hummer BL1 is electrically connected with described microcontroller by described first resistance R1, and the other end ground connection of described hummer BL1, described microcontroller is also electrically connected with described signal-adjusting module.
2. hummer sound volume control device as claimed in claim 1, it is characterized in that, described signal-adjusting module is human inductor and/or human-computer interaction interface.
3. hummer sound volume control device as claimed in claim 2, described human inductor is infrared inductor.
4. hummer sound volume control device as claimed in claim 2, it is characterized in that, described human-computer interaction interface comprises display circuit and key circuit, and described device also comprises:
Power circuit, described power circuit is electrically connected with described microcontroller, to power to described microcontroller.
5. hummer sound volume control device as claimed in claim 1, it is characterized in that, described hummer BL1 is piezo buzzer or electromagnetic buzzer; When described hummer BL1 is piezo buzzer, described device also comprises:
Second resistance R2, described second resistance R2 is in parallel with described piezo buzzer;
A common end grounding of described second resistance R2 and described piezo buzzer, another common port is electrically connected with described first resistance R1.
6. household electrical appliance, is characterized in that, described household electrical appliance comprise:
Hummer sound volume control device as described in any one of claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520616289.XU CN204856134U (en) | 2015-08-14 | 2015-08-14 | Buzzer volume controlling means and domestic appliance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520616289.XU CN204856134U (en) | 2015-08-14 | 2015-08-14 | Buzzer volume controlling means and domestic appliance |
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| CN204856134U true CN204856134U (en) | 2015-12-09 |
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| CN201520616289.XU Active CN204856134U (en) | 2015-08-14 | 2015-08-14 | Buzzer volume controlling means and domestic appliance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112614475A (en) * | 2020-12-30 | 2021-04-06 | 深圳飞安瑞科技股份有限公司 | Piezoelectric buzzer volume enhancement circuit, method, electronic device and storage medium |
| CN113138568A (en) * | 2020-01-18 | 2021-07-20 | 九阳股份有限公司 | Food processor control method based on encoder and food processor |
-
2015
- 2015-08-14 CN CN201520616289.XU patent/CN204856134U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138568A (en) * | 2020-01-18 | 2021-07-20 | 九阳股份有限公司 | Food processor control method based on encoder and food processor |
| CN112614475A (en) * | 2020-12-30 | 2021-04-06 | 深圳飞安瑞科技股份有限公司 | Piezoelectric buzzer volume enhancement circuit, method, electronic device and storage medium |
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