CN110933206B - Electronic device - Google Patents
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- CN110933206B CN110933206B CN201911191300.1A CN201911191300A CN110933206B CN 110933206 B CN110933206 B CN 110933206B CN 201911191300 A CN201911191300 A CN 201911191300A CN 110933206 B CN110933206 B CN 110933206B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
Abstract
The application provides an electronic device, including linear motor, camera module and controller. The linear motor has a plurality of drive frequencies; the camera module comprises a voice coil motor, and the voice coil motor has a vibration frequency; wherein a difference between a first driving frequency of the plurality of driving frequencies and a vibration frequency of the voice coil motor is less than or equal to a preset threshold; the controller is configured to control the linear motor to alternately vibrate at the plurality of drive frequencies.
Description
Technical Field
The application relates to the technical field of electronics, in particular to electronic equipment.
Background
The linear motor in the electronic equipment can generate vibration when a call is coming, and the vibration can be transmitted to the camera module in the electronic equipment through the body of the electronic equipment, so that the camera module can generate abnormal sound under the action of the vibration; moreover, a focusing motor is arranged in the camera module, the vibration frequency between the linear motor and the focusing motor is close, and when the linear motor vibrates for a long time, the camera module is driven to resonate, so that the phenomenon of fuzzy photographing and shooting can occur when a user uses the camera module to photograph; that is, the linear motor can bring interference to the camera module when vibrating for a long time, and the imaging of the camera module is influenced.
Disclosure of Invention
The application provides an electronic device capable of preventing interference of a linear motor to a camera module.
The application provides an electronic device, including linear motor, camera module and controller. The linear motor has a plurality of drive frequencies; the camera module comprises a voice coil motor, and the voice coil motor has a vibration frequency; wherein a difference between a first driving frequency of the plurality of driving frequencies and a vibration frequency of the voice coil motor is less than or equal to a preset threshold; the controller is configured to control the linear motor to alternately vibrate at the plurality of drive frequencies.
In the electronic device of the embodiment of the application, the controller controls the linear motor to vibrate alternately at the plurality of driving frequencies, so that the regular vibration of the linear motor can be avoided, and the resonance of the linear motor and the voice coil motor of the camera module can be avoided, and the camera module can be protected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a block diagram of an electronic device provided in a first embodiment of the present application.
Fig. 2 is a schematic frequency response curve diagram of a linear motor of an electronic device according to an embodiment of the present application.
Fig. 3 is a schematic diagram of driving waveforms of a linear motor of an electronic device according to a first embodiment of the present application, wherein the linear motor is alternately driven at a first driving frequency and a second driving frequency.
Fig. 4 is a block diagram of an electronic device provided in a second embodiment of the present application.
Fig. 5 is a block diagram of an electronic device provided in a third embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The technical solution of the embodiment of the present application may be applied to a terminal device, for example, a portable or mobile computing device such as a smart phone, a notebook computer, a tablet computer, a game device, and the like, but the embodiment of the present application is not limited thereto.
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.
It should be noted that, for convenience of description, like reference numerals denote like parts in the embodiments of the present application, and a detailed description of the like parts is omitted in different embodiments for the sake of brevity.
A first embodiment of the present application provides an electronic device, which includes a linear motor, a camera module and a controller. The linear motor has a plurality of drive frequencies; the camera module comprises a voice coil motor, wherein the voice coil motor has a vibration frequency, and the difference value between one of the driving frequencies and the vibration frequency of the voice coil motor is smaller than or equal to a preset threshold value. The controller is configured to control the linear motor to alternately vibrate at the plurality of drive frequencies.
Wherein the preset threshold is preferably 10 Hz; the first drive frequency is preferably equal to the natural frequency of the linear motor; the controller is further configured to monitor a plurality of the driving frequencies, and when a deviation is detected in the plurality of the driving frequencies, the controller is further configured to control a driving voltage applied to the linear motor to compensate for the driving frequency.
In the electronic device 100 of the present application, the controller 30 controls the linear motor 10 to alternately vibrate at the plurality of driving frequencies, so that the linear motor can be prevented from regularly vibrating, and the resonance between the linear motor 10 and the voice coil motor of the camera module 20 can be prevented, thereby protecting the camera module 20.
Referring to fig. 1, a first embodiment of the present application provides an electronic apparatus 100, which includes a linear motor 10, a camera module 20 and a controller 30. The linear motor 10 has a first driving frequency, and the camera module 20 includes a voice coil motor having a vibration frequency, wherein a difference between the first driving frequency and the vibration frequency of the voice coil motor is less than or equal to a preset threshold. The linear motor 10 also has a second driving frequency, and the controller 30 is configured to control the linear motor 10 to alternately vibrate at the first driving frequency and the second driving frequency.
In the electronic device 100 of the present application, the controller 30 controls the linear motor 10 to alternately vibrate at the first driving frequency and the second driving frequency, so that the linear motor can be prevented from regularly vibrating, resonance between the linear motor 10 and the voice coil motor of the camera module 20 can be avoided, and the camera module 20 can be protected; in the prior art, if the first driving frequency of the linear motor is very close to or even the same as the vibration frequency of the voice coil motor, the resonance of the camera module is easy to occur, which affects the photographing, and the driving frequency of the linear motor and the vibration frequency of the voice coil motor are often very close to or even the same as each other due to the reason of the linear motor, which causes difficulty in design; in the electronic device 100 of the present application, the first driving frequency of the linear motor and the vibration frequency of the voice coil motor can be set very close to or even the same, without worrying about resonance between the linear motor and the voice coil motor and influence on the camera module 20; it is understood that the electronic device 100 of the present application has a very wide applicable range, and may be applied to a case where the first driving frequency of the linear motor is relatively close to the vibration frequency of the voice coil motor, or a case where the first driving frequency of the linear motor is relatively different from the vibration frequency of the voice coil motor.
In some embodiments, the preset threshold is 10 hertz (Hz); tests prove that when the difference between the first driving frequency and the vibration frequency of the voice coil motor is less than or equal to 10Hz, the linear motor 10 causes the resonance of the voice coil motor of the camera module 20 to be larger, which affects the photographing of the camera module 20, so that the preset threshold is set to 10Hz in the embodiment, that is, the embodiment is improved for the electronic device in which the difference between the first driving frequency and the vibration frequency of the voice coil motor is less than or equal to 10 Hz; of course, in other embodiments, the preset threshold may be appropriately widened or narrowed, such as 12Hz, 15Hz, 8Hz, and the like.
In other embodiments, the first driving frequency and the vibration frequency of the voice coil motor may also be the same.
In still other embodiments, the difference between the first driving frequency of the linear motor 10 and the vibration frequency of the voice coil motor may be greater than 10Hz and less than a predetermined threshold, such as less than 50 Hz.
In some embodiments, the first drive frequency is equal to the natural frequency of the linear motor 10; at this driving frequency, the linear motor 10 itself may form strong resonance (resonance) to reach the maximum vibration intensity, that is, the vibration intensity of the linear motor 10 at this driving frequency is maximum (resonance point); that is, in the present application, the driving frequency of the linear motor 10 is at least partially within the natural frequency of the linear motor 10, so that the vibration intensity of the linear motor 10 can be ensured.
In other embodiments, the first driving frequency may be close to the natural frequency of the linear motor 10, so that the vibration intensity of the linear motor 10 at the first driving frequency is close to the maximum vibration intensity, and the vibration intensity of the linear motor 10 may also be ensured, for example, the difference between the first driving frequency and the natural frequency of the linear motor 10 is +/-1Hz, and the vibration intensity of the linear motor 10 at the first driving frequency is at least 95% of the maximum vibration intensity.
In some embodiments, the first driving frequency is f0, and the driving waveform corresponding to the first driving frequency is a sine wave; the second driving frequency is f0+ a, and the driving waveform corresponding to the second driving frequency is also a sine wave.
In some embodiments, the value of a may be a positive value or a negative value different from zero, and the absolute value of a may be smaller than the preset threshold; the value of a cannot be too large, otherwise, the second driving frequency deviates too far from the natural frequency, so that the vibration intensity of the linear motor 10 is small, and a user may not be able to sense the vibration of the electronic device 100, which affects the use.
In some embodiments, the value of a may be determined according to a frequency response curve of the linear motor 10; referring to fig. 2, the frequency response curve of the linear motor 10 is similar to a parabola, and on the frequency response curve of the linear motor 10, the driving frequency point with the largest vibration amount corresponds to the highest point of the frequency response curve, and this driving frequency is generally the natural frequency of the linear motor 10, and in this embodiment, may be the first driving frequency; defining the driving frequency corresponding to the frequency response curve when the vibration quantity of the linear motor 10 is about 80% of the maximum vibration quantity as a reference driving frequency, and if the difference value between the first driving frequency and the reference driving frequency is A, the absolute value of a is less than or equal to A; for example, in fig. 2, the vibration amount of the linear motor 10 at the resonance point 205Hz is the largest, about 1.28Grms, and after the frequency is shifted by a, the vibration amount is decreased, and after the frequency is shifted by 8Hz, the basic vibration amount is 80% left, so that a can be limited to ± 8Hz, otherwise the vibration feeling is affected.
In some embodiments, referring to fig. 3, preferably, the alternating vibration is a cycle of vibrating the linear motor 10 at the first driving frequency for one cycle and then vibrating the linear motor at the second driving frequency for one cycle. Wherein, one period and one alternation cycle can eliminate the resonance of the linear motor 10 and the voice coil motor to the maximum extent; in addition, the initial vibration sensation is strongest by first vibrating at the first driving frequency closest to or equal to the natural frequency of the linear motor 10, which is more advantageous for alerting the user.
In some embodiments, the alternating vibration may be a cycle of vibrating the linear motor 10 at the first driving frequency after vibrating at the second driving frequency for one cycle.
In other embodiments, the alternating vibration may also be a cycle in which the linear motor 10 vibrates for a plurality of cycles at the first driving frequency and then vibrates for one or more cycles at the second driving frequency; the plurality of periods may be, for example, two periods. Wherein the order of the first driving frequency and the second driving frequency is interchangeable.
Applicable scenarios of the present application include, for example: incoming calls, messages, App content reminders, and the like.
In some embodiments, the controller 30 is further configured to monitor the first driving frequency and the second driving frequency, and when the first driving frequency and the second driving frequency are detected to deviate, the controller 30 is further configured to control the driving voltage applied to the linear motor 10 to compensate the driving frequency, so as to ensure the vibration intensity of the linear motor 10; for example, it is possible to control the driving voltage to the linear motor 10 to be increased so that the first or second driving frequency is closer to the natural frequency.
Referring to fig. 4, a second embodiment of the present application provides an electronic device 100a, where the electronic device 100a in this embodiment is substantially the same as the electronic device 100 in the first embodiment, and mainly differs from the electronic device 100a in this embodiment in that a linear motor of the electronic device 100a further has a third driving frequency; specifically, the method comprises the following steps:
the electronic device 100a includes a linear motor 10, a camera module 20, and a controller 30. The linear motor 10 has a first driving frequency, and the camera module 20 includes a voice coil motor having a vibration frequency, wherein a difference between the first driving frequency and the vibration frequency of the voice coil motor is less than or equal to a preset threshold. The linear motor 10 also has a second driving frequency and a third driving frequency, and the controller 30 is configured to control the linear motor 10 to alternately vibrate at the first driving frequency, the second driving frequency and the third driving frequency.
In the electronic device 100a of the present application, the controller 30 controls the linear motor 10 to alternately vibrate at the first driving frequency, the second driving frequency and the third driving frequency, so as to prevent the linear motor from regularly vibrating, further prevent the linear motor 10 from resonating with the voice coil motor of the camera module 20, and protect the camera module 20; that is, in the electronic device 100 of the present application, the first driving frequency of the linear motor and the vibration frequency of the voice coil motor can be set very close to or even the same without worrying about resonance between the linear motor and the voice coil motor and influence on the camera module 20; it is understood that the electronic device 100a of the present application has a very wide applicable range, and may be applied to a case where the first driving frequency of the linear motor is relatively close to the vibration frequency of the voice coil motor, or a case where the first driving frequency of the linear motor is relatively different from the vibration frequency of the voice coil motor.
In some embodiments, the preset threshold is 10 hertz (Hz); tests prove that when the difference between the first driving frequency and the vibration frequency of the voice coil motor is less than or equal to 10Hz, the linear motor 10 causes the resonance of the voice coil motor of the camera module 20 to be larger, which affects the photographing of the camera module 20, so that the preset threshold is set to 10Hz in the embodiment, that is, the embodiment is improved for the electronic device in which the difference between the first driving frequency and the vibration frequency of the voice coil motor is less than or equal to 10 Hz; of course, in other embodiments, the preset threshold may be appropriately widened or narrowed, such as 12Hz, 15Hz, 8Hz, and the like.
In other embodiments, the first driving frequency and the vibration frequency of the voice coil motor may also be the same.
In still other embodiments, the difference between the first driving frequency of the linear motor 10 and the vibration frequency of the voice coil motor may be greater than 10Hz and less than a predetermined threshold, such as less than 50 Hz.
In some embodiments, the first drive frequency is equal to the natural frequency of the linear motor 10; at this driving frequency, the linear motor 10 itself may form strong resonance (resonance) to reach the maximum vibration intensity, that is, the vibration intensity of the linear motor 10 at this driving frequency is maximum (resonance point); that is, in the present application, the driving frequency of the linear motor 10 is at least partially within the natural frequency of the linear motor 10, so that the vibration intensity of the linear motor 10 can be ensured.
In other embodiments, the first driving frequency may be close to the natural frequency of the linear motor 10, so that the vibration intensity of the linear motor 10 at the first driving frequency is close to the maximum vibration intensity, and the vibration intensity of the linear motor 10 may also be ensured, for example, the difference between the first driving frequency and the natural frequency of the linear motor 10 is +/-1Hz, and the vibration intensity of the linear motor 10 at the first driving frequency is at least 95% of the maximum vibration intensity.
In some embodiments, the first driving frequency is f0, and the driving waveform corresponding to the first driving frequency is a sine wave; the second driving frequency is f0+ a, and the driving waveform corresponding to the second driving frequency is also a sine wave; the third driving frequency is f0+ b, and the driving waveform corresponding to the third driving frequency is also a sine wave.
In some embodiments, the values of a and b may be positive values or negative values not equal to zero, the absolute values of a and b may be smaller than the preset threshold, and a is not equal to b; otherwise, the second and third driving frequencies deviate from the natural frequency too far, so that the vibration intensity of the linear motor 10 is small, and a user may not be able to sense the vibration of the electronic device 100a, which affects the use.
In some embodiments, the absolute value of a may be less than or greater than the absolute value of b; in other embodiments, the absolute value of a may also be equal to the absolute value of b.
In some embodiments, the values of a and b may be determined according to the frequency response curve of the linear motor 10; referring to fig. 2, the frequency response curve of the linear motor 10 is similar to a parabola, and on the frequency response curve of the linear motor 10, the driving frequency point with the largest vibration amount corresponds to the highest point of the frequency response curve, and this driving frequency is generally the natural frequency of the linear motor 10, and in this embodiment, may be the first driving frequency; defining the driving frequency corresponding to the frequency response curve when the vibration quantity of the linear motor 10 is about 80% of the maximum vibration quantity as a reference driving frequency, and if the difference value between the first driving frequency and the reference driving frequency is A, the absolute values of a and b are both less than or equal to A; for example, in fig. 2, the vibration amount of the linear motor 10 at the resonance point 205Hz is the largest, about 1.28Grms, and after the frequency is shifted by a, the vibration amount is decreased, and after the frequency is shifted by 8Hz, the basic vibration amount is 80% left, so that a and b can be limited to ± 8Hz, otherwise the vibration feeling is affected.
In some embodiments, it is preferable that the alternating vibration is a cycle in which the linear motor 10 vibrates for one cycle at the first driving frequency, then vibrates for one cycle at the second driving frequency, and then vibrates for one cycle at the third driving frequency.
In some embodiments, the alternating vibration may be a cycle of vibrating the linear motor 10 at the second driving frequency for one cycle, then vibrating the linear motor at the first driving frequency for one cycle, and then vibrating the linear motor at the third driving frequency for one cycle.
In some embodiments, the alternating vibration may be a cycle in which the linear motor 10 vibrates at the second driving frequency for one cycle, then vibrates at the third driving frequency for one cycle, and then vibrates at the first driving frequency for one cycle.
In other embodiments, other orders are possible.
In other embodiments, the alternating vibration may also be a cycle in which the linear motor 10 vibrates at the first driving frequency for a plurality of cycles, then vibrates at the second driving frequency for one or more cycles, and then vibrates at the third driving frequency for one or more cycles; the plurality of periods may be, for example, two periods. In other embodiments, the order of the first, second, and third driving frequencies may be interchanged.
Applicable scenarios of the present application include, for example: incoming calls, messages, App content reminders, and the like.
In some embodiments, the controller 30 is further configured to monitor the first driving frequency, the second driving frequency and the third driving frequency, and when the first driving frequency, the second driving frequency and the third driving frequency are monitored to be deviated, the controller 30 is further configured to control the driving voltage applied to the linear motor 10 to compensate the driving frequency so as to ensure the vibration intensity of the linear motor 10; for example, when the first driving frequency, the second driving frequency and the third driving frequency are detected to be deviated, the controller 30 may be configured to control the driving voltage applied to the linear motor 10 to be increased so that the first, second or third driving frequency is closer to the natural frequency.
Referring to fig. 5, a third embodiment of the present application provides an electronic device 100b, in which the electronic device 100b of the present embodiment is substantially the same as the electronic device 100a of the second embodiment, and mainly differs therefrom in that a linear motor of the electronic device 100b of the present embodiment further has a fourth driving frequency; specifically, the method comprises the following steps:
the electronic device 100b includes a linear motor 10, a camera module 20, and a controller 30. The linear motor 10 has a first driving frequency, and the camera module 20 includes a voice coil motor having a vibration frequency, wherein a difference between the first driving frequency and the vibration frequency of the voice coil motor is less than or equal to a preset threshold. The linear motor 10 further has a second driving frequency, a third driving frequency and a fourth driving frequency, and the controller 30 is configured to control the linear motor 10 to alternately vibrate at the first driving frequency, the second driving frequency, the third driving frequency and the fourth driving frequency.
In some embodiments, the preset threshold is 10 hertz (Hz); tests prove that when the difference between the first driving frequency and the vibration frequency of the voice coil motor is less than or equal to 10Hz, the linear motor 10 causes the resonance of the voice coil motor of the camera module 20 to be larger, which affects the photographing of the camera module 20, so that the preset threshold is set to 10Hz in the embodiment, that is, the embodiment is improved for the electronic device in which the difference between the first driving frequency and the vibration frequency of the voice coil motor is less than or equal to 10 Hz; of course, in other embodiments, the preset threshold may be appropriately widened or narrowed, such as 12Hz, 15Hz, 8Hz, and the like.
In other embodiments, the first driving frequency and the vibration frequency of the voice coil motor may also be the same.
In still other embodiments, the difference between the first driving frequency of the linear motor 10 and the vibration frequency of the voice coil motor may be greater than 10Hz and less than a predetermined threshold, such as less than 50 Hz.
In some embodiments, the first drive frequency is equal to the natural frequency of the linear motor 10; at this driving frequency, the linear motor 10 itself may form strong resonance (resonance) to reach the maximum vibration intensity, that is, the vibration intensity of the linear motor 10 at this driving frequency is maximum (resonance point); that is, in the present application, the driving frequency of the linear motor 10 is at least partially within the natural frequency of the linear motor 10, so that the vibration intensity of the linear motor 10 can be ensured.
In other embodiments, the first driving frequency may be close to the natural frequency of the linear motor 10, so that the vibration intensity of the linear motor 10 at the first driving frequency is close to the maximum vibration intensity, and the vibration intensity of the linear motor 10 may also be ensured, for example, the difference between the first driving frequency and the natural frequency of the linear motor 10 is +/-1Hz, and the vibration intensity of the linear motor 10 at the first driving frequency is at least 95% of the maximum vibration intensity.
In some embodiments, the first driving frequency is f0, and the driving waveform corresponding to the first driving frequency is a sine wave; the second driving frequency is f0+ a, and the driving waveform corresponding to the second driving frequency is also a sine wave; the third driving frequency is f0+ b, and a driving waveform corresponding to the third driving frequency is also a sine wave; the fourth vibration frequency is f0+ c, and the drive waveform corresponding to the fourth vibration frequency is also a sine wave.
In some embodiments, the values of a, b, and c may be positive values or negative values not equal to zero, the absolute values of a, b, and c may be smaller than the preset threshold, and a, b, and c are not equal to each other; otherwise, the second, third, and fourth vibration frequencies deviate from the natural frequency too far, so that the vibration intensity of the linear motor 10 is small, and a user may not be able to sense the vibration of the electronic device 100b, thereby affecting the use.
In some embodiments, the absolute values of two of the three of a, b, c may also be equal.
In some embodiments, the values of a, b, and c may be determined according to a frequency response curve of the linear motor 10; referring to fig. 2, the frequency response curve of the linear motor 10 is similar to a parabola, and on the frequency response curve of the linear motor 10, the driving frequency point with the largest vibration amount corresponds to the highest point of the frequency response curve, and this driving frequency is generally the natural frequency of the linear motor 10, and in this embodiment, may be the first driving frequency; defining the driving frequency corresponding to the frequency response curve when the vibration quantity of the linear motor 10 is about 80% of the maximum vibration quantity as a reference driving frequency, and if the difference value between the first driving frequency and the reference driving frequency is A, the absolute values of a, b and c are all less than or equal to A; for example, in fig. 2, the vibration amount of the linear motor 10 at the resonance point 205Hz is the largest, about 1.28Grms, and after the frequency is shifted by a, the vibration amount is decreased, and after the frequency is shifted by 8Hz, the basic vibration amount is 80% left, so that a, b, and c can be limited to ± 8Hz, otherwise the vibration feeling is affected.
In some embodiments, it is preferable that the alternating vibration is that the linear motor 10 vibrates for one period at the first driving frequency, then vibrates for one period at the second driving frequency, then vibrates for one period at the third driving frequency, and then vibrates for one period at the fourth driving frequency; thus circulating.
In other embodiments, the alternating vibration may also be a cycle that the linear motor 10 vibrates at the first driving frequency for a plurality of cycles, then vibrates at the second driving frequency for one or more cycles, then vibrates at the third driving frequency for one or more cycles, and then vibrates at the fourth driving frequency for one or more cycles; the plurality of periods may be, for example, two periods.
Wherein the order of the first, second, third, and fourth drive frequencies may be interchanged.
Applicable scenarios of the present application include, for example: incoming calls, messages, App content reminders, and the like.
In some embodiments, the controller 30 is further configured to monitor the first, second, third and fourth driving frequencies, and when a deviation of the first, second, third and fourth driving frequencies is detected, the controller 30 is further configured to control the driving voltage applied to the linear motor 10 to compensate the driving frequency so as to ensure the vibration intensity of the linear motor 10; for example, when the first, second, third and fourth driving frequencies are detected to be deviated, the controller 30 may be configured to control the driving voltage applied to the linear motor 10 to be increased so that the first, second, third and fourth driving frequencies are closer to the natural frequency.
It is understood that, in other embodiments, the linear motor 10 of the electronic device 100 may further have a fifth driving frequency and more driving frequencies, and the fifth driving frequency and more driving frequencies can be set by referring to the settings of the second and third embodiments, which are not described herein again.
It should be noted that the functions executed by the controller 30 in the foregoing embodiments of the present invention may be implemented in the form of hardware, or may be implemented in the form of software functional modules. If implemented in software functional modules and sold or used as a stand-alone product, may also be stored in a computer readable storage medium such as a read-only memory, a magnetic or optical disk, or the like.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present application and not for limiting, and although the present application is described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.
Claims (12)
1. An electronic device is characterized by comprising a linear motor, a camera module and a controller; the linear motor has a plurality of drive frequencies; the camera module comprises a voice coil motor, and the voice coil motor has a vibration frequency; wherein a difference between a first driving frequency of the plurality of driving frequencies and a vibration frequency of the voice coil motor is less than or equal to a preset threshold; the controller is configured to control the linear motor to alternately vibrate at the plurality of drive frequencies.
2. The electronic device of claim 1, wherein the preset threshold is 10 hertz.
3. The electronic device of claim 1, wherein the first drive frequency is equal to a natural frequency of the linear motor.
4. The electronic device of any of claims 1-3, wherein the controller is further configured to monitor a plurality of the driving frequencies, and when a deviation in the plurality of the driving frequencies is detected, the controller is further configured to control the driving voltage applied to the linear motor to compensate for the driving frequency.
5. The electronic device of any of claims 1-3, wherein the linear motor has the first drive frequency and a second drive frequency; the first driving frequency is f0, and the driving waveform corresponding to the first driving frequency is a sine wave; the second driving frequency is f0+ a, and the driving waveform corresponding to the second driving frequency is also a sine wave; the controller is used for controlling the linear motor to vibrate alternately at the first driving frequency and the second driving frequency.
6. The electronic device of claim 5, wherein a has a positive value or a negative value different from zero, and an absolute value of a is smaller than the preset threshold.
7. The electronic device according to claim 6, wherein a driving frequency on a frequency response curve corresponding to the linear motor when the vibration amount of the linear motor is 80% of the maximum vibration amount is defined as a reference driving frequency, and an absolute value of a is smaller than or equal to a if a difference between the first driving frequency and the reference driving frequency is a.
8. The electronic device of claim 6,
the absolute value of a is less than or equal to 8 Hz.
9. The electronic device of any of claims 1-3, wherein the linear motor has the first, second, and third drive frequencies; the first driving frequency is f0, the second driving frequency is f0+ a, the third driving frequency is f0+ b, and driving waveforms corresponding to the first driving frequency, the second driving frequency and the third driving frequency are all sine waves; the controller is used for controlling the linear motor to vibrate alternately at the first driving frequency, the second driving frequency and the third driving frequency.
10. The electronic device of claim 9, wherein a and b both have positive or negative values that are not equal to zero, the absolute values of a and b are both smaller than the preset threshold, and a is not equal to b.
11. The electronic device according to claim 10, wherein when the vibration amount of the linear motor is defined as 80% of the maximum vibration amount, the driving frequency on the frequency response curve corresponding to the linear motor is defined as a reference driving frequency, and the difference between the first driving frequency and the reference driving frequency is a, then the absolute values of a and b are both less than or equal to a.
12. An electronic device as claimed in claim 10 or 11, characterized in that the absolute values of a, b are each smaller than or equal to 8 hz.
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| CN201911191300.1A CN110933206B (en) | 2019-11-28 | 2019-11-28 | Electronic device |
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| CN201911191300.1A CN110933206B (en) | 2019-11-28 | 2019-11-28 | Electronic device |
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| CN112100884B (en) * | 2020-08-28 | 2023-12-01 | 瑞声新能源发展(常州)有限公司科教城分公司 | Vibration amount determining method of touch device of linear motor and related equipment |
| CN113286091B (en) * | 2021-06-09 | 2023-05-23 | 维沃移动通信有限公司 | Control method, control device, electronic equipment and readable storage medium |
| CN113489839B (en) * | 2021-07-30 | 2022-10-21 | Oppo广东移动通信有限公司 | Event reminding method and device, storage medium and electronic equipment |
| CN113972923B (en) * | 2021-11-03 | 2023-04-14 | 四川酷比通信设备有限公司 | Method for preventing motor from interfering antenna and electronic equipment thereof |
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