CN105045185A - Buzzer volume control apparatus and method for controlling buzzer volume by using the same, and household appliance - Google Patents
Buzzer volume control apparatus and method for controlling buzzer volume by using the same, and household appliance Download PDFInfo
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- CN105045185A CN105045185A CN201510500929.5A CN201510500929A CN105045185A CN 105045185 A CN105045185 A CN 105045185A CN 201510500929 A CN201510500929 A CN 201510500929A CN 105045185 A CN105045185 A CN 105045185A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25314—Modular structure, modules
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Abstract
The invention discloses a buzzer volume control apparatus and method for controlling a buzzer volume by using the same, and a household appliance. The buzzer volume control apparatus comprises a buzzer BL1, a first switching tube Q1, a second switching tube Q2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a capacitor C1, a signal adjusting module and a microcontroller. According to the invention, the microcontroller obtains volume levels of the buzzer by the signal adjusting module and outputs PWM signals with different duty ratios according to the volume levels of the buzzer to control the buzzer to make buzzing sound with different volumes; and a frequency signal is also outputted to the buzzer, thereby controlling the buzzer to make buzzing sound with specific tones and tone qualities. Therefore, control of the tone, tone quality and volume of the buzzer can be realized without the need to change a hardware circuit.
Description
Technical field
The present invention relates to volume controlling technique field, be specifically related to a kind of hummer sound volume control device and adopt this device to carry out method and the household electrical appliance of the control of hummer volume.
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.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of hummer sound volume control device, control method and household electrical appliance, do not need to change hardware circuit, adopt the drive singal of variable frequency, variable duty ratio to drive hummer to send the buzzing of different tone, tone color and different volume.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
On the one hand, the invention provides a kind of hummer sound volume control device, described device comprises hummer BL1, the first switching tube Q1, second switch pipe Q2, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, electric capacity C1, signal-adjusting module and microcontroller;
Described 5th resistance R5 is in parallel with described hummer BL1, first common port of described 5th resistance R5 and described hummer BL1 is electrically connected with the positive pole of described electric capacity C1, described first common port is also connected with the collector of the first switching tube Q1, the minus earth of described electric capacity C1; The base stage of described first switching tube Q1 connects described microcontroller by the first resistance R1, and the emitter of described first switching tube Q1 meets power supply VCC by the 3rd resistance R3; Described 5th resistance R5 is connected with described second collector opening the light pipe Q2 by the 4th resistance R4 with second common port of described hummer BL1, the grounded emitter of described second switch pipe Q2, the base stage of described second switch pipe Q2 is electrically connected with described microcontroller by the second resistance R2; Described signal-adjusting module is electrically connected with described microcontroller;
Described microcontroller by second switch pipe Q2 to hummer transmission frequency signal, and obtain hummer level of sound volume by described signal-adjusting module, corresponding pwm signal is sent by the first switching tube Q1 to hummer according to hummer level of sound volume, constant by holding frequency signal, the dutycycle of adjustment pwm signal realizes the adjustment of hummer volume.
The beneficial effect of device provided by the invention is: microcontroller exports the pwm signal of different duty to hummer, control the buzzing that hummer sends different volume, and the frequency signal of characteristic frequency is exported to hummer, to control the buzzing (U.S. sound) that hummer sends specific tone and tone color, do not need to change hardware circuit, just can realize the control of hummer tone, tone color and volume.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described hummer BL1 is piezo buzzer, and described signal-adjusting module is human inductor and/or human-computer interaction interface.
Further, when described signal-adjusting module is human inductor, microcontroller adjusts hummer level of sound volume automatically according to the distance of human body and described human inductor, and it specifically comprises:
When described microcontroller judges that the distance of human body and described human inductor is less than or equal to predetermined distance range, by low for current buzzing volume level down the first predetermined quantity grade;
When described microcontroller judges that the distance of human body and described human inductor is greater than predetermined distance range, current buzzing level of sound volume is raised the second predetermined quantity grade.
Described further beneficial effect is: microcontroller can regulate hummer level of sound volume automatically according to the distance of human body and human inductor.
Further, described device also comprises:
The collector of the 3rd switching tube Q3, described 3rd switching tube Q3 is electrically connected with the base stage of described first switching tube Q1 by the first resistance R1, the grounded emitter of described 3rd switching tube Q3, and base stage is electrically connected with described microcontroller by the 6th resistance R6.
Described further beneficial effect is: can adopt low-voltage driving hummer, regulates hummer volume.
Further, 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.
On the other hand, the invention provides a kind of method adopting hummer sound volume control device to carry out the control of hummer volume, described hummer sound volume control device comprises hummer BL1, microcontroller, the first switching tube Q1, second switch pipe Q2, the 4th resistance R4 and signal-adjusting module, described microcontroller is electrically connected by described second switch pipe Q2 and described 4th resistance R4 and by described first switching tube Q1 with described hummer BL1, and described microcontroller is also electrically connected with described signal-adjusting module, described method comprises:
S1, microcontroller by second switch pipe Q2 and the 4th resistance R4 to hummer BL1 transmission frequency signal;
S2, microcontroller obtain hummer level of sound volume by signal-adjusting module, according to hummer level of sound volume, corresponding pwm signal is exported to hummer BL1 by the first switching tube Q1, constant by holding frequency signal, the dutycycle of adjustment pwm signal realizes the adjustment of hummer volume, wherein, the dutycycle of described pwm signal is corresponding with described hummer level of sound volume.
The beneficial effect of method provided by the invention is: microcontroller exports the pwm signal of different duty to hummer, control the buzzing that hummer sends different volume, and the drive singal of characteristic frequency is exported to hummer, with the buzzing (U.S. sound) driving hummer to send specific tone and tone color, do not need to change hardware circuit, just can realize the control of hummer tone, tone color and volume.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described signal-adjusting module is human inductor and/or human-computer interaction interface;
When described signal-adjusting module is human inductor, in described step S2, microcontroller is specifically comprised by signal-adjusting module acquisition hummer level of sound volume:
The human-induced signal sensed is transferred to microcontroller by S21a, human inductor;
When S22a, described microcontroller receive human-induced signal, filtering and identification are carried out to described human-induced signal, obtain the distance of human body and described human inductor according to the intensity of human-induced signal, and automatically adjust hummer level of sound volume according to the distance of human body and described human inductor;
When described signal-adjusting module is human-computer interaction interface, in described step S2, microcontroller is specifically comprised by signal-adjusting module acquisition hummer level of sound volume:
S21b, microcontroller receive the hummer level of sound volume inputted by human-computer interaction interface.
Described further beneficial effect is: microcontroller can obtain hummer level of sound volume in several ways, namely hummer level of sound volume can automatically be adjusted according to human-induced signal, also can receive the hummer level of sound volume inputted by human-computer interaction interface, dirigibility is high.
Further, automatically adjust hummer level of sound volume according to the distance of human body and described human inductor in described step S22a specifically to comprise:
When the distance of human body and described human inductor is less than or equal to predetermined distance range, by low for current buzzing volume level down the first predetermined quantity grade;
When the distance of human body and described human inductor is greater than predetermined distance range, current buzzing level of sound volume is raised the second predetermined quantity grade.
Further, described method also comprises:
When the distance of human body and described human inductor is less than or equal within the scope of predeterminable range, makes acoustic-optic indicator by human-computer interaction interface and remind.
Described further beneficial effect is: when human body arrives within the scope of predeterminable range, reminded carry out man-machine interaction by acousto-optic.
Again on the one hand, the invention provides a kind of household electrical appliance, described household electrical appliance comprise hummer sound volume control device.
The profitable effect of household electrical appliance provided by the invention is: the hummer sound volume control device provided can be applied in various household electrical appliance, and applicability is strong, applied widely.
Accompanying drawing explanation
Fig. 1 is a kind of hummer sound volume control device schematic diagram of the embodiment of the present invention one;
Fig. 2 is a kind of hummer sound volume control device schematic diagram of the embodiment of the present invention two;
Fig. 3 is a kind of method flow diagram adopting hummer sound volume control device to carry out the control of hummer volume of the embodiment of the present invention three;
Fig. 4 is the ascendant trend schematic diagram of voltage Vo on electric capacity C1 in the embodiment of the present invention three;
Fig. 5 is a kind of home appliance structure schematic diagram of the embodiment of the present invention five.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment one, a kind of hummer sound volume control device.Below in conjunction with Fig. 1, the device that the present embodiment provides is described.
See Fig. 1, the hummer sound volume control device that the present embodiment provides comprises hummer BL1, the first switching tube Q1, second switch pipe Q2, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, electric capacity C1, signal-adjusting module and microcontroller;
Described 5th resistance R5 is in parallel with described hummer BL1, first common port of described 5th resistance R5 and described hummer BL1 is electrically connected with the positive pole of described electric capacity C1, described first common port is also connected with the collector of the first switching tube Q1, the minus earth of described electric capacity C1; The base stage of described first switching tube Q1 connects described microcontroller by the first resistance R1, and the emitter of described first switching tube Q1 meets power supply VCC by the 3rd resistance R3; Described 5th resistance R5 is connected with described second collector opening the light pipe Q2 by the 4th resistance R4 with another common port of described hummer BL1, the grounded emitter of described second switch pipe Q2, the base stage of described second switch pipe Q2 is electrically connected with described microcontroller by the second resistance R2; Described signal-adjusting module is electrically connected with described microcontroller.Described hummer BL1 is piezo buzzer, and described signal-adjusting module is human inductor and/or human-computer interaction interface, and wherein, described human inductor is infrared inductor.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.
Wherein, described microcontroller by second switch pipe Q2 to hummer transmission frequency signal, and obtain hummer level of sound volume by described signal-adjusting module, corresponding pwm signal is sent by the first switching tube Q1 to hummer according to hummer level of sound volume, constant by holding frequency signal, the dutycycle of adjustment pwm signal realizes the adjustment of hummer volume.During specific implementation, when described signal-adjusting module is human inductor, microcontroller adjusts hummer level of sound volume automatically according to the distance of human body and described human inductor, it specifically comprises: when described microcontroller judges that the distance of human body and described human inductor is less than or equal to predetermined distance range, by low for current buzzing volume level down the first predetermined quantity grade; When described microcontroller judges that the distance of human body and described human inductor is greater than predetermined distance range, current buzzing level of sound volume is raised the second predetermined quantity grade.
Embodiment two, a kind of hummer sound volume control device.Below in conjunction with Fig. 2, the device that the present embodiment provides is described.
See Fig. 2, the device that the present embodiment provides is on the basis of previous embodiment one, also comprise the 3rd switching tube Q3, the collector of described 3rd switching tube Q3 is electrically connected with the base stage of described first switching tube Q1 by described first resistance R1, the grounded emitter of described 3rd switching tube Q3, and the base stage of described 3rd switching tube Q3 is electrically connected with described microcontroller by the 6th resistance R6.When hummer uses low-voltage power supply, can adopt the device that previous embodiment one provides, in embodiment one, the power supply of hummer BL1 needs the power supply being less than or equal to microcontroller.And in the present embodiment, the power supply of hummer BL1 can higher than microcontroller, being used for improving the supply voltage of hummer, is high drive scheme.
It should be noted that, embodiment one is semiconductor switch device with the switching tube in embodiment two, be not limited to triode, also field effect transistor, metal-oxide-semiconductor etc. can be adopted, and the base stage of switching tube in embodiment one and embodiment two can built-in resistor, also can external base resistance, the present embodiment is not construed as limiting.
Embodiment three, a kind of method adopting hummer sound volume control device to carry out the control of hummer volume.Below in conjunction with Fig. 3 and Fig. 4, the method that the present embodiment provides is described.
Concrete, hummer BL1, microcontroller, the first switching tube Q1, second switch pipe Q2, the 4th resistance R4 and signal-adjusting module is at least comprised in hummer sound volume control device, described microcontroller is electrically connected by described second switch pipe Q2 and described 4th resistance R4 and by described first switching tube Q1 with described hummer BL1, and described microcontroller is also electrically connected with described signal-adjusting module.
The method that the present embodiment provides specifically can see Fig. 3, S1, microcontroller by second switch pipe Q2 and the 4th resistance R4 to hummer BL1 transmission frequency signal.
Concrete, microcontroller exports the frequency signal of characteristic frequency to hummer BL1 by second switch pipe Q2 and resistance R4 according to predetermined demand, with the buzzing (U.S. sound) making hummer BL1 send diaphone mediation tone color, to distinguish different scenes.
S2, microcontroller obtain hummer level of sound volume by signal-adjusting module, according to hummer level of sound volume, corresponding pwm signal is exported to hummer BL1 by the first switching tube Q1, constant by holding frequency signal, the dutycycle of adjustment pwm signal realizes the adjustment of hummer volume, wherein, the dutycycle of described pwm signal is corresponding with described hummer level of sound volume.
Concrete, the signal-adjusting module in the present embodiment is human inductor and/or human-computer interaction interface, and wherein, human inductor is infrared inductor.When signal-adjusting module is human inductor, the human-induced signal sensed is transferred to microcontroller by human inductor; When described microcontroller receives human-induced signal, filtering and identification are carried out to described human-induced signal, obtain the distance of human body and described human inductor according to the intensity of human-induced signal, and automatically adjust hummer level of sound volume according to the distance of human body and described human inductor.Detailed process is: 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 hummer level of sound volume can be reduced lower than 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 level of sound volume is raised the second predetermined quantity grade.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 on human-computer interaction interface, realizes man-machine interaction.
When signal-adjusting module is human-computer interaction interface, microcontroller receives the hummer level of sound volume inputted by human-computer interaction interface.Such as, user can by the key circuit on human-computer interaction interface to microcontroller input hummer level of sound volume.
According to hummer level of sound volume, microcontroller exports corresponding pwm signal by the first switching tube Q1 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.
Specific works principle: see Fig. 1 and Fig. 2, Freq is that hummer driving frequency exports, PWM is that last or end syllable controls and power supply supply side, because the voltage Vo exponentially rule on electric capacity C1 rises, can be shown in Figure 4, when the dutycycle of PWM diminishes, voltage Vo will be less than VCC, and now the volume of hummer BL1 will reduce thereupon; Otherwise when PWM dutycycle strengthens, the voltage Vo on electric capacity C1 raises, and the volume of hummer BL1 will increase thereupon.
The present embodiment adjusts the tone of hummer BL1, tone color and volume in conjunction with frequency signal and pwm signal, and such as, when hummer BL1 normal articulation, Freq exports 2.7KHz frequency, and PWM exports the signal of 4KHz, 30% dutycycle, and the duration is 200ms; When hummer BL1 produces last or end syllable, Freq exports 2.7KHz frequency, and PWM exports 0 level, duration 500ms.
Embodiment four, a kind of household electrical appliance.Below in conjunction with Fig. 5, the household electrical appliance that the present embodiment provides are described.
See Fig. 5, the household electrical appliance that the present embodiment provides comprise the hummer sound volume control device in previous embodiment one or embodiment two, and correlation technique feature see embodiment one or embodiment two, can not repeat them here.
A kind of hummer sound volume control device provided by the invention, control method 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, can control hummer volume by the output of pwm signal, the mode adopting the dutycycle of pwm signal to change controls volume; Microcontroller can also export the drive singal of different frequency to hummer according to predetermined demand, the tone of adjustment hummer and tone color; 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, hummer sound volume control device provided by the invention 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.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a hummer sound volume control device, it is characterized in that, described device comprises hummer BL1, the first switching tube Q1, second switch pipe Q2, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, electric capacity C1, signal-adjusting module and microcontroller;
Described 5th resistance R5 is in parallel with described hummer BL1, first common port of described 5th resistance R5 and described hummer BL1 is electrically connected with the positive pole of described electric capacity C1, described first common port is also connected with the collector of the first switching tube Q1, the minus earth of described electric capacity C1; The base stage of described first switching tube Q1 connects described microcontroller by the first resistance R1, and the emitter of described first switching tube Q1 meets power supply VCC by the 3rd resistance R3; Described 5th resistance R5 is connected with described second collector opening the light pipe Q2 by the 4th resistance R4 with second common port of described hummer BL1, the grounded emitter of described second switch pipe Q2, the base stage of described second switch pipe Q2 is electrically connected with described microcontroller by the second resistance R2; Described signal-adjusting module is electrically connected with described microcontroller;
Described microcontroller by second switch pipe Q2 to hummer transmission frequency signal, and obtain hummer level of sound volume by described signal-adjusting module, corresponding pwm signal is sent by the first switching tube Q1 to hummer according to hummer level of sound volume, constant by holding frequency signal, the dutycycle of adjustment pwm signal realizes the adjustment of hummer volume.
2. hummer sound volume control device as claimed in claim 1, it is characterized in that, described hummer BL1 is piezo buzzer, and described signal-adjusting module is human inductor and/or human-computer interaction interface.
3. hummer sound volume control device as claimed in claim 2, it is characterized in that, when described signal-adjusting module is human inductor, microcontroller adjusts hummer level of sound volume automatically according to the distance of human body and described human inductor, and it specifically comprises:
When described microcontroller judges that the distance of human body and described human inductor is less than or equal to predetermined distance range, by low for current buzzing volume level down the first predetermined quantity grade;
When described microcontroller judges that the distance of human body and described human inductor is greater than predetermined distance range, current buzzing level of sound volume is raised the second predetermined quantity grade.
4. hummer sound volume control device as claimed in claim 1, it is characterized in that, described device also comprises:
The collector of the 3rd switching tube Q3, described 3rd switching tube Q3 is electrically connected with the base stage of described first switching tube Q1 by the first resistance R1, and the grounded emitter of described 3rd switching tube Q3 and base stage are passed through the 6th resistance R6 and be electrically connected with described microcontroller.
5. 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.
6. the method adopting hummer sound volume control device to carry out the control of hummer volume, described hummer sound volume control device comprises hummer BL1, microcontroller, the first switching tube Q1, second switch pipe Q2, the 4th resistance R4 and signal-adjusting module, described microcontroller is electrically connected by described second switch pipe Q2 and described 4th resistance R4 and by described first switching tube Q1 with described hummer BL1, and described microcontroller is also electrically connected with described signal-adjusting module, it is characterized in that, described method comprises:
S1, microcontroller by second switch pipe Q2 and the 4th resistance R4 to hummer BL1 transmission frequency signal;
S2, microcontroller obtain hummer level of sound volume by signal-adjusting module, according to hummer level of sound volume, corresponding pwm signal is exported to hummer BL1 by the first switching tube Q1, constant by holding frequency signal, the dutycycle of adjustment pwm signal realizes the adjustment of hummer volume, wherein, the dutycycle of described pwm signal is corresponding with described hummer level of sound volume.
7. the method adopting hummer sound volume control device to carry out the control of hummer volume as claimed in claim 6, it is characterized in that, described signal-adjusting module is human inductor and/or human-computer interaction interface;
When described signal-adjusting module is human inductor, in described step S2, microcontroller is specifically comprised by signal-adjusting module acquisition hummer level of sound volume:
The human-induced signal sensed is transferred to microcontroller by S21a, human inductor;
When S22a, described microcontroller receive human-induced signal, filtering and identification are carried out to described human-induced signal, obtain the distance of human body and described human inductor according to the intensity of human-induced signal, and automatically adjust hummer level of sound volume according to the distance of human body and described human inductor;
When described signal-adjusting module is human-computer interaction interface, in described step S2, microcontroller is specifically comprised by signal-adjusting module acquisition hummer level of sound volume:
S21b, microcontroller receive the hummer level of sound volume inputted by human-computer interaction interface.
8. the as claimed in claim 7 method adopting hummer sound volume control device to carry out the control of hummer volume, is characterized in that, automatically adjusts hummer level of sound volume specifically comprise in described step S22a according to the distance of human body and described human inductor:
When the distance of human body and described human inductor is less than or equal to predetermined distance range, by low for current buzzing volume level down the first predetermined quantity grade;
When the distance of human body and described human inductor is greater than predetermined distance range, current buzzing level of sound volume is raised the second predetermined quantity grade.
9. the method adopting hummer sound volume control device to carry out the control of hummer volume as claimed in claim 8, it is characterized in that, described method also comprises:
When the distance of human body and described human inductor is less than or equal within the scope of predeterminable range, makes acousto-optic by human-computer interaction interface and remind.
10. household electrical appliance, is characterized in that, described household electrical appliance comprise:
Hummer sound volume control device described in any one of claim 1-5.
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| CN105513584A (en) * | 2015-12-30 | 2016-04-20 | 苏州蓝博控制技术有限公司 | Buzz output method and device |
| CN108022579A (en) * | 2018-01-16 | 2018-05-11 | 深圳和而泰小家电智能科技有限公司 | Sounding regulating device, adjusting method and the household electrical appliance of a kind of buzzer |
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| CN108806658A (en) * | 2017-05-03 | 2018-11-13 | 深圳市帝迈生物技术有限公司 | A kind of blood analyser and its buzzer volume adjust driving circuit |
| CN109584854A (en) * | 2018-10-29 | 2019-04-05 | 深圳和而泰智能控制股份有限公司 | A kind of method and device adjusting buzzer sound size |
| CN110400555A (en) * | 2019-06-12 | 2019-11-01 | 新沂市承翔电子有限公司 | A kind of noise reduction forte electronic buzzer and its control system and control method |
| CN110689870A (en) * | 2019-08-28 | 2020-01-14 | 广东美的厨房电器制造有限公司 | Buzzer control circuit and buzzer device |
| CN110989423A (en) * | 2019-11-13 | 2020-04-10 | 珠海格力电器股份有限公司 | Method, device, terminal and computer readable medium for controlling multiple intelligent devices |
| WO2021126741A1 (en) * | 2019-12-18 | 2021-06-24 | Texas Instruments Incorporated | Duty cycle tuning in self-resonant piezo buzzer |
| US11402265B2 (en) | 2019-11-05 | 2022-08-02 | Texas Instruments Incorporated | Apparatus for integrated offset voltage for photodiode current amplifier |
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| CN108022579A (en) * | 2018-01-16 | 2018-05-11 | 深圳和而泰小家电智能科技有限公司 | Sounding regulating device, adjusting method and the household electrical appliance of a kind of buzzer |
| CN109584854A (en) * | 2018-10-29 | 2019-04-05 | 深圳和而泰智能控制股份有限公司 | A kind of method and device adjusting buzzer sound size |
| CN109584854B (en) * | 2018-10-29 | 2023-09-26 | 深圳和而泰智能控制股份有限公司 | Method and device for adjusting sound of buzzer |
| CN110400555A (en) * | 2019-06-12 | 2019-11-01 | 新沂市承翔电子有限公司 | A kind of noise reduction forte electronic buzzer and its control system and control method |
| CN110689870A (en) * | 2019-08-28 | 2020-01-14 | 广东美的厨房电器制造有限公司 | Buzzer control circuit and buzzer device |
| US11402265B2 (en) | 2019-11-05 | 2022-08-02 | Texas Instruments Incorporated | Apparatus for integrated offset voltage for photodiode current amplifier |
| CN110989423B (en) * | 2019-11-13 | 2021-03-23 | 珠海格力电器股份有限公司 | Method, device, terminal and computer readable medium for controlling multiple intelligent devices |
| CN110989423A (en) * | 2019-11-13 | 2020-04-10 | 珠海格力电器股份有限公司 | Method, device, terminal and computer readable medium for controlling multiple intelligent devices |
| US11361644B2 (en) | 2019-12-18 | 2022-06-14 | Texas Instruments Incorporated | Duty cycle tuning in self-resonant piezo buzzer |
| WO2021126741A1 (en) * | 2019-12-18 | 2021-06-24 | Texas Instruments Incorporated | Duty cycle tuning in self-resonant piezo buzzer |
| US11468756B2 (en) | 2020-04-02 | 2022-10-11 | Texas Instruments Incorporated | Integrated circuit for smoke detector having compatibility with multiple power supplies |
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