CN112242754A - Wireless charging positioning method and device and mobile terminal - Google Patents
Wireless charging positioning method and device and mobile terminal Download PDFInfo
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- CN112242754A CN112242754A CN201910644940.7A CN201910644940A CN112242754A CN 112242754 A CN112242754 A CN 112242754A CN 201910644940 A CN201910644940 A CN 201910644940A CN 112242754 A CN112242754 A CN 112242754A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The disclosure relates to a wireless charging positioning method and device and a mobile terminal, which are used for improving the wireless charging efficiency of the mobile terminal. The method comprises the following steps: after the mobile terminal enters a wireless charging state, acquiring a first magnetic field intensity detected by a first compass and a second magnetic field intensity detected by a second compass; acquiring a first reference magnetic field strength and a second reference magnetic field strength which are stored in advance; the first reference magnetic field strength and the second reference magnetic field strength are respectively magnetic field strengths detected by the first compass and the second compass when the receiving coil is aligned with the transmitting coil on the wireless charging base; the mobile terminal is in a wireless charging state when the receiving coil is aligned with the transmitting coil; and comparing the first magnetic field intensity with the first reference magnetic field intensity and the second magnetic field intensity with the second reference magnetic field intensity, and outputting prompt information according to the comparison result, wherein the prompt information is used for prompting the moving direction of the mobile terminal. The technical scheme of the disclosure can improve the efficiency of wireless charging.
Description
Technical Field
The present disclosure relates to the field of wireless charging technologies, and in particular, to a wireless charging positioning method and apparatus, and a mobile terminal.
Background
WPC (Wireless Power Consortium) mentions in the Qi protocol that it is desirable for a Wireless charging system to have an optimal coil placement position, and provides several ideal auxiliary positioning methods for a Wireless charging receiving coil, which are suitable for a multi-coil transmitting device, that is, a receiving device is placed anywhere on the transmitting device, and a corresponding transmitting coil on the transmitting device corresponds to a receiving coil on the receiving device, so as to perform Wireless charging.
However, in the application of the wireless charging system to the mobile phone, certain practicability is lacked. Since the transmitting device (wireless charging base) of the mobile phone (as the receiving device of the wireless charging system) has only one transmitting coil inside, the auxiliary positioning method of the receiving coil proposed in the Qi protocol cannot be applied. Therefore, how to align the receiving coil inside the mobile phone with the transmitting coil of the charging base is a technical problem to be solved.
Disclosure of Invention
In order to overcome the problems in the related art, embodiments of the present disclosure provide a wireless charging positioning method and apparatus, and a mobile terminal, so as to align a receiving coil in the mobile terminal for wireless charging with a transmitting coil in a wireless charging base, thereby improving the efficiency of wireless charging.
According to a first aspect of the embodiments of the present disclosure, a wireless charging positioning method is provided, which is applied to a mobile terminal; the mobile terminal comprises a receiving coil, a first compass and a second compass; the position of the first compass is different from the position of the second compass; the method comprises the following steps:
after the mobile terminal enters a wireless charging state, acquiring a first magnetic field intensity detected by the first compass and a second magnetic field intensity detected by the second compass;
acquiring a first reference magnetic field strength and a second reference magnetic field strength which are stored in advance; the first reference magnetic field strength and the second reference magnetic field strength are respectively magnetic field strengths detected by the first compass and the second compass when the receiving coil is aligned with a transmitting coil on a wireless charging base; when the receiving coil is aligned with the transmitting coil, the mobile terminal is in a wireless charging state;
and comparing the first magnetic field strength with the first reference magnetic field strength, comparing the second magnetic field strength with the second reference magnetic field strength, and outputting prompt information according to a comparison result, wherein the prompt information is used for prompting the moving direction of the mobile terminal so as to align the receiving coil with the transmitting coil.
In one embodiment, the comparison result may include a first comparison result and a second comparison result, the first comparison result being a comparison of the first magnetic field strength and the first reference magnetic field strength, the second comparison result being a comparison of the second magnetic field strength and the second reference magnetic field strength;
the outputting of the prompt information according to the comparison result includes:
acquiring information of the first moving direction according to the first comparison result, and acquiring information of the second moving direction according to the second comparison result; the first moving direction and the second moving direction are perpendicular to each other;
acquiring the information of the moving direction according to the information of the first moving direction and the information of the second moving direction;
and outputting the prompt information according to the information of the moving direction.
In one embodiment, the first moving direction is a first direction when the first comparison result is that the first magnetic field strength is smaller than the first reference magnetic field strength, the first moving direction is a second direction when the first comparison result is that the first magnetic field strength is larger than the first reference magnetic field strength, and the first direction and the second direction are opposite directions; when the mobile terminal moves in the first moving direction, an absolute value of a difference value of the first magnetic field strength and the first reference magnetic field strength decreases;
when the second magnetic field strength is smaller than the second reference magnetic field strength as a result of the second comparison, the second moving direction is a third direction, and when the second magnetic field strength is larger than the second reference magnetic field strength as a result of the second comparison, the second moving direction is a fourth direction, and the third direction and the fourth direction are opposite directions; the third direction is perpendicular to the first direction; when the mobile terminal moves in the second moving direction, an absolute value of a difference value of the second magnetic field strength and the second reference magnetic field strength decreases.
In one embodiment, the prompt message may include an adjustment angle of a moving direction of the mobile terminal; the adjustment angle is calculated by the following formula:
A＝K*(B1-B1’)/(B2-B2’)
wherein, a is the adjustment angle, K is a proportionality coefficient obtained according to the position of the first compass and the position of the second compass, B1 is a first reference magnetic field strength, B1 'is the first magnetic field strength, B2 is a second reference magnetic field strength, and B2' is the second magnetic field strength.
In one embodiment, when the first compass and the second compass are symmetric about the center of the receiving coil, K may be 1.
In one embodiment, the prompt is a graphical prompt, a textual prompt, or a voice prompt.
In one embodiment, the mobile terminal may include a main circuit board and a sub circuit board; the main circuit board is electrically connected with the sub circuit board;
the first compass is electrically connected with the main circuit board, and the second compass is electrically connected with the sub circuit board.
In one embodiment, the method may further comprise: outputting a notification message for notifying that the receiving coil and the transmitting coil are aligned when it is determined that the first magnetic field strength is the same as the first reference magnetic field strength and the second magnetic field strength is the same as the second reference magnetic field strength according to the comparison result.
According to a second aspect of the embodiments of the present disclosure, a wireless charging positioning apparatus is provided, which is applied to a mobile terminal; the mobile terminal comprises a receiving coil, a first compass and a second compass; the position of the first compass is different from the position of the second compass; the device comprises:
the first acquisition module is used for acquiring a first magnetic field intensity detected by the first compass and a second magnetic field intensity detected by the second compass after the mobile terminal enters a wireless charging state;
the second acquisition module is used for acquiring a first reference magnetic field strength and a second reference magnetic field strength which are stored in advance; the first reference magnetic field strength and the second reference magnetic field strength are respectively magnetic field strengths detected by the first compass and the second compass when the receiving coil is aligned with a transmitting coil on a wireless charging base; when the receiving coil is aligned with the transmitting coil, the mobile terminal is in a wireless charging state;
and the comparison module is used for comparing the first magnetic field strength with the first reference magnetic field strength and the second magnetic field strength with the second reference magnetic field strength and outputting prompt information according to a comparison result, wherein the prompt information is used for prompting the moving direction of the mobile terminal so as to enable the receiving coil to be aligned with the transmitting coil.
According to a third aspect of the embodiments of the present disclosure, there is provided a mobile terminal comprising a processor and a memory; the memory for storing a computer program; the processor is configured to execute the computer program stored in the memory to implement the method according to the first aspect.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of the first aspect described above.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: through obtain first magnetic field intensity that first compass detected and second magnetic field intensity that the second compass detected after mobile terminal gets into wireless charged state to obtain the first reference magnetic field intensity of prestore and second reference magnetic field intensity, then, contrast first magnetic field intensity and first reference magnetic field intensity and contrast second magnetic field intensity with second reference magnetic field intensity, and according to the comparison result output prompt information, prompt information is used for indicateing mobile terminal's moving direction, can make receiving coil and transmitting coil align. According to the technical scheme provided by the embodiment of the disclosure, the receiving coil for wireless charging in the mobile terminal can be aligned with the transmitting coil in the wireless charging base, and the wireless charging efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flow diagram illustrating a wireless charging location method according to an example embodiment;
FIG. 2 is a block diagram of a mobile terminal shown in accordance with an exemplary embodiment;
fig. 3 is a schematic structural diagram of a wireless charging base according to an exemplary embodiment;
FIGS. 4-5 are schematic diagrams illustrating alignment of a transmit coil with a receive coil in accordance with an exemplary embodiment;
FIG. 6 is a schematic diagram illustrating a mobile terminal positioned in the magnetic field of a transmit coil in accordance with an exemplary embodiment;
FIG. 7 is a schematic diagram illustrating the magnetic fields of a transmit coil in accordance with an exemplary embodiment;
fig. 8 is a flow chart illustrating a wireless charging location method according to another exemplary embodiment;
FIG. 9 is a schematic illustration of a prompt message shown in accordance with an exemplary embodiment;
FIG. 10 is a block diagram illustrating a wireless charging positioning device in accordance with an exemplary embodiment;
fig. 11 is a block diagram illustrating a mobile terminal according to an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Fig. 1 is a flow chart illustrating a wireless charging location method according to an example embodiment. The wireless charging positioning method can be applied to a mobile terminal with a wireless charging function, the mobile terminal can be a mobile phone, a tablet computer, an intelligent bracelet and the like, and the embodiment of the disclosure is not limited. As shown in fig. 2, the mobile terminal 21 may include a first compass 211, a second compass 212, and a receiving coil 213 for wireless charging. The position of the first compass 211 is different from the position of the second compass 212. As shown in fig. 1, the wireless charging positioning method includes the following steps S101 to S103:
in step S101, after the mobile terminal enters a wireless charging state, a first magnetic field strength detected by the first compass and a second magnetic field strength detected by the second compass are obtained.
In one embodiment, as shown in fig. 3, the wireless charging base 31 includes a transmitting coil 311, and the transmitting coil 311 can transmit power to the receiving coil 213 in the mobile terminal through electromagnetic induction, so as to realize wireless charging.
In one embodiment, the mobile terminal 21 further comprises a wireless charging chip and a processor, and the wireless charging chip is electrically connected with the processor. When the wireless charging chip determines that the mobile terminal enters the wireless charging state, it may send a notification message to the processor, the notification message being used to notify the processor that the mobile terminal 21 enters the wireless charging state.
In one embodiment, the wireless charging base 31 needs to confirm that the mobile terminal carrying the receiving coil is placed on the wireless charging base 31, not other metal products, before the mobile terminal enters the wireless charging state. The specific method comprises the following steps: the transmitting coil 311 may transmit the Ping signal at a specified period, and after the receiving coil in the mobile terminal 21 receives the Ping signal, if the output voltage of the rectifier bridge in the wireless charging chip is greater than a specified threshold, the wireless charging chip executes the Qi protocol and enters the wireless charging state. Wherein, the Ping signal is a pulse signal. Identification information is sent to the wireless charging base 31 during execution of the Qi protocol. The input of the rectifier bridge is connected to the receiving coil 213.
In one embodiment, after the mobile terminal 21 enters the wireless charging state, the processor may obtain a first magnetic field strength detected by the first compass 211 and a second magnetic field strength detected by the second compass 212. Specifically, as shown in fig. 2, the mobile terminal 21 may further include a main circuit board 214 and a sub circuit board 215, and the main circuit board 214 is electrically connected to the sub circuit board 215. The processor may be located on the main circuit board 214. The first compass 211 can be electrically connected to the main circuit board 214, and the second compass 212 can be electrically connected to the sub circuit board 215. After the mobile terminal 21 enters the wireless charging state, the processor may control the first compass 211 and the second compass 212 to perform magnetic field detection, the second compass 212 may transmit the detected second magnetic field strength to the main circuit board 214, and the processor may obtain the first magnetic field strength detected by the first compass 211 and the second magnetic field strength detected by the second compass 212.
In step S102, a first reference magnetic field strength and a second reference magnetic field strength which are stored in advance are acquired; the first reference magnetic field strength and the second reference magnetic field strength are respectively the magnetic field strengths detected by the first compass and the second compass when the receiving coil is aligned with a transmitting coil on a wireless charging base, and the mobile terminal is in a wireless charging state when the receiving coil is aligned with the transmitting coil.
In one embodiment, the processor may obtain the first and second pre-stored reference magnetic field strengths after obtaining the first magnetic field strength detected by the first compass and the second magnetic field strength detected by the second compass, but is not limited thereto, for example, the first and second pre-stored reference magnetic field strengths may be obtained first, and then the first magnetic field strength detected by the first compass and the second magnetic field strength detected by the second compass may be obtained.
In one embodiment, as shown in fig. 4 to 6, after the mobile terminal enters the wireless charging state through testing before the mobile terminal leaves the factory, the receiving coil 213 is aligned with the transmitting coil 311 on the wireless charging base 31 by means of a device instrument to reach the optimal position for wireless charging, and the first compass 211 and the second compass 212 are controlled to perform magnetic field detection, the magnetic field strength measured by the first compass 211 is labeled as a first reference magnetic field strength, and the magnetic field strength measured by the second compass 212 is labeled as a second reference magnetic field strength, and the first reference magnetic field strength and the second reference magnetic field strength are stored at the specified positions.
As shown in fig. 7, the strength of the magnetic field generated by the transmitting coil 311 has the following relationship with the position: the closer the distance from the magnetic field center O, the larger the magnetic field strength, the farther the distance from the magnetic field center O, the smaller the magnetic field strength, and the same magnetic field strength on the same magnetic line 61, that is, the magnetic field strength decreases from the magnetic field center O in the R-radial direction R. In a rectangular plane coordinate system OXY with the magnetic field center O as the origin and the plane of the transmitting coil 311, the magnetic field strengths at different positions in the X-axis direction are different, and the magnetic field strengths at different positions in the Y-axis direction are different. Therefore, after the mobile terminal enters the wireless charging state, and when the receiving coil 213 is aligned with the transmitting coil 311 on the wireless charging base 31, the magnetic field strength at the position of the first compass 211 and the magnetic field strength at the position of the second compass 212 are used as reference magnetic field strengths for positioning the position of the mobile terminal on the wireless charging base in the X direction and the position of the mobile terminal on the wireless charging base in the Y direction, so as to achieve the purpose of aligning the receiving coil 213 with the transmitting coil 311 on the wireless charging base 31.
In step S103, comparing the first magnetic field strength with the first reference magnetic field strength, comparing the second magnetic field strength with the second reference magnetic field strength, and outputting a prompt message according to a comparison result, where the prompt message is used to prompt a moving direction of the mobile terminal, so that the receiving coil and the transmitting coil are aligned.
In one embodiment, the first magnetic field strength may be compared to a first reference magnetic field strength and the second magnetic field strength may be compared to a second reference magnetic field strength by a comparator. The processor may output prompt information for prompting a moving direction of the mobile terminal to align the receiving coil with the transmitting coil according to the comparison result. The above-mentioned "alignment" may be "substantial alignment". When the receive coil is substantially aligned with the transmit coil, the first magnetic field strength is substantially the same as the first reference magnetic field strength and the second magnetic field strength is substantially the same as the second reference magnetic field strength.
It should be noted that, the substantial alignment of the receiving coil and the transmitting coil of the wireless charging base includes two cases, one is that the receiving coil and the transmitting coil of the wireless charging base are perfectly aligned, and the projection of the receiving coil on the wireless charging base falls within the projection of the transmitting coil on the wireless charging base. The other is that the receiving coil is not completely aligned with the transmitting coil of the wireless charging base, the projection of the receiving coil on the wireless charging base and the projection of the transmitting coil on the wireless charging base can partially overlap, and the distance between the projection of the center of the receiving coil on the wireless charging base and the projection of the center of the transmitting coil on the wireless charging base is within a specified range.
It should be noted that the first magnetic field strength is substantially the same as the first reference magnetic field strength, which includes two cases: one is that the first magnetic field strength is the same as the first reference magnetic field strength, and the other is that the first magnetic field strength is different from the first reference magnetic field strength, but the difference between the first magnetic field strength and the first reference magnetic field strength is within a specified range. Similarly, the second magnetic field strength being substantially the same as the second reference magnetic field strength includes two conditions: one is that the second magnetic field strength is the same as the second reference magnetic field strength, and the other is that the second magnetic field strength is different from the second reference magnetic field strength, but the difference between the second magnetic field strength and the second reference magnetic field strength is within a specified range.
In one embodiment, the comparison result may include a first comparison result and a second comparison result, the first comparison result is a comparison result of the first magnetic field strength and a first reference magnetic field strength, and the second comparison result is a comparison result of the second magnetic field strength and a second reference magnetic field strength. In this embodiment, outputting the prompt information according to the comparison result, as shown in fig. 8, may include the following steps 801 to 803:
in step 801, information of the first moving direction is obtained according to the first comparison result, and information of the second moving direction is obtained according to the second comparison result; the first moving direction and the second moving direction are perpendicular to each other.
In step 802, the information of the moving direction is obtained according to the information of the first moving direction and the information of the second moving direction.
In step 803, the presentation information is output according to the information of the moving direction.
In one embodiment, information of a first moving direction in which the mobile terminal moves in the X-axis direction may be obtained according to a comparison result of the first magnetic field strength and the first reference magnetic field strength, and information of a second moving direction in which the mobile terminal moves in the Y-axis direction may be obtained according to a comparison result of the second magnetic field strength and the second reference magnetic field strength. Then, the information of the moving direction of the mobile terminal may be obtained according to the information of the first moving direction and the information of the second moving direction, where the moving direction of the mobile terminal may be obtained by overlapping the first moving direction and the second moving direction. Then, a prompt message may be output based on the information of the moving direction. The prompt message can be a graphic prompt message, a text prompt message or a voice prompt message.
In one embodiment, the first moving direction is a first direction when the first comparison result is that the first magnetic field strength is smaller than the first reference magnetic field strength, and the first moving direction is a second direction when the first comparison result is that the first magnetic field strength is larger than the first reference magnetic field strength, and the first direction and the second direction are opposite directions to each other. For example, the first direction may be a positive X-axis direction and the second direction may be a negative X-axis direction. When the mobile terminal moves in the first moving direction, the absolute value of the difference between the first magnetic field strength and the first reference magnetic field strength decreases, i.e., the first magnetic field strength is approaching the first reference magnetic field strength. And when the second comparison result is that the second magnetic field strength is smaller than the second reference magnetic field strength, the second moving direction is a third direction, and when the second comparison result is that the second magnetic field strength is larger than the second reference magnetic field strength, the second moving direction is a fourth direction, the third direction and the fourth direction are opposite, and the third direction and the first direction are perpendicular to each other. For example, the third direction may be a positive Y-axis direction and the fourth direction may be a negative Y-axis direction. When the mobile terminal moves in the second moving direction, the absolute value of the difference between the second magnetic field strength and the second reference magnetic field strength decreases, i.e., the second magnetic field strength is approaching the second reference magnetic field strength.
For example, when the first comparison result is that the first magnetic field strength is greater than the first reference magnetic field strength, the information of the first moving direction is the information of moving in the negative direction of the X-axis, and when the second comparison result is that the second magnetic field strength is less than the second reference magnetic field strength, the information of the second moving direction is the information of moving in the positive direction of the Y-axis. According to the information of the first moving direction and the information of the second moving direction, the following steps can be determined: the included angle between the moving direction of the mobile terminal and the positive direction of the X axis is more than 90 degrees and less than 180 degrees.
As shown in fig. 9, the mobile terminal may output a graphical prompt on the user interface 91. Wherein the icon 911 is a wireless charging icon, and the arrow 912 is used for indicating the moving direction of the mobile terminal. The mobile terminal may display a wireless charging icon on the user interface after entering the wireless charging state.
In this embodiment, a first magnetic field strength detected by the first compass and a second magnetic field strength detected by the second compass are acquired after the mobile terminal enters the wireless charging state, then a first reference magnetic field strength and a second reference magnetic field strength which are stored in advance are acquired, then the first magnetic field strength and the first reference magnetic field strength are compared, the second magnetic field strength and the second reference magnetic field strength are compared, prompt information is output according to a comparison result, the prompt information is used for prompting the moving direction of the mobile terminal, and the receiving coil and the transmitting coil can be aligned. According to the technical scheme provided by the embodiment of the disclosure, the receiving coil for wireless charging in the mobile terminal can be aligned with the transmitting coil in the wireless charging base, and the wireless charging efficiency is improved.
Moreover, in this embodiment, the original compass of the mobile terminal can be utilized, and the receiving coil of the mobile terminal for wireless charging is aligned with the transmitting coil of the wireless charging base under the condition that the area and the volume of the circuit board are not increased, so that the wireless charging efficiency is improved, and the cost is reduced.
In an embodiment, the prompt message may include an adjustment angle of the moving direction of the mobile terminal, and the adjustment angle may be an included angle between the moving direction of the mobile terminal and the positive direction of the X axis, but is not limited thereto. The angle can be calculated by the following formula:
A＝K*(B1-B1’)/(B2-B2’)
wherein, a is the adjustment angle, K is a proportionality coefficient obtained according to the position of the first compass and the position of the second compass, B1 is a first reference magnetic field strength, B1 'is the first magnetic field strength, B2 is a second reference magnetic field strength, and B2' is the second magnetic field strength. K may be a function of the coordinates in the xy coordinate system with respect to the position of the first compass or the position of the second compass.
In one embodiment, as shown in fig. 6, the first compass 211 and the second compass 212 are symmetrical about the center of the receiving coil 213, B1 is equal to B2, and K is 1.
In the embodiment of the disclosure, in the process of wirelessly charging the mobile terminal, in order to align the receiving coil of the mobile terminal with the transmitting coil in the wireless charging base, the moving direction of the mobile terminal and the adjustment angle of the moving direction are output, and a user may be given clear prompt information by combining with a UI interface of the mobile terminal, so as to improve the efficiency of adjusting the position of the mobile terminal.
In one embodiment, when the mobile terminal determines that the first magnetic field strength is the same as the first reference magnetic field strength and the second magnetic field strength is the same as the second reference magnetic field strength according to the comparison result, a notification message for notifying the user that the receiving coil and the transmitting coil are aligned is output. Wherein the notification message may be a text message, a voice message or an image message.
Note that the first magnetic field strength being the same as the first reference magnetic field strength includes two cases: one is that the first magnetic field strength is the same as the first reference magnetic field strength, and the other is that the first magnetic field strength is different from the first reference magnetic field strength, but an absolute value of a difference between the first magnetic field strength and the first reference magnetic field strength is within a specified range. Similarly, the second magnetic field strength being the same as the second reference magnetic field strength includes two cases: one is that the second magnetic field strength is the same as the second reference magnetic field strength, and the other is that the second magnetic field strength is different from the second reference magnetic field strength, but the absolute value of the difference between the second magnetic field strength and the second reference magnetic field strength is within a specified range.
In the embodiment of the disclosure, when the mobile terminal determines that the receiving coil is aligned with the transmitting coil, the mobile terminal outputs the notification message, so that a user can be informed that the receiving coil is aligned with the transmitting coil in time, and the user experience is improved.
Fig. 10 is a block diagram illustrating a wireless charging location device according to an example embodiment. In this embodiment, the wireless charging positioning device is applied to a mobile terminal, where the mobile terminal includes the receiving coil, a first compass and a second compass, and a position of the first compass is different from a position of the second compass; as shown in fig. 10, the apparatus includes:
a first obtaining module 1001, configured to obtain, after the mobile terminal enters a wireless charging state, a first magnetic field strength detected by the first compass and a second magnetic field strength detected by the second compass;
a second obtaining module 1102, configured to obtain a first reference magnetic field strength and a second reference magnetic field strength which are stored in advance; the first reference magnetic field strength and the second reference magnetic field strength are respectively magnetic field strengths detected by the first compass and the second compass when the receiving coil is aligned with a transmitting coil on a wireless charging base; when the receiving coil is aligned with the transmitting coil, the mobile terminal is in a wireless charging state;
a comparison module 1003 for comparing the first magnetic field strength with the first reference magnetic field strength and the second magnetic field strength with the second reference magnetic field strength, and outputting prompt information according to a comparison result, wherein the prompt information is used for prompting the moving direction of the mobile terminal, so that the receiving coil is aligned with the transmitting coil.
In one embodiment, the comparison module 1003 may include:
the first obtaining submodule is used for obtaining the information of the first moving direction according to the first comparison result and obtaining the information of the second moving direction according to the second comparison result; the first moving direction and the second moving direction are perpendicular to each other;
the second obtaining submodule is used for obtaining the information of the moving direction according to the information of the first moving direction and the information of the second moving direction;
and the output submodule is used for outputting the prompt information according to the information of the moving direction.
In one embodiment, the prompt message may include an adjustment angle of a moving direction of the mobile terminal; the adjustment angle is calculated by the following formula:
A＝K*(B1-B1’)/(B2-B2’)
wherein, a is the adjustment angle, K is a proportionality coefficient obtained according to the position of the first compass and the position of the second compass, B1 is a first reference magnetic field strength, B1 'is the first magnetic field strength, B2 is a second reference magnetic field strength, and B2' is the second magnetic field strength.
In one embodiment, K is 1 when the first compass and the second compass are symmetric about the center of the receiving coil.
The embodiment of the present disclosure further provides a mobile terminal, which includes a processor and a memory; the memory for storing a computer program; the processor is configured to execute the computer program stored in the memory to implement the method steps of any of the above embodiments.
The embodiments of the present disclosure also provide a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by a processor, the method steps described in any of the above embodiments are implemented.
The specific manner in which the processor performs the operations with respect to the apparatus in the above-described embodiment has been described in detail in relation to the embodiment of the method, and will not be elaborated upon here.
In the embodiment of the disclosure, after the mobile terminal enters the wireless charging state, a first magnetic field strength detected by the first compass and a second magnetic field strength detected by the second compass are obtained, then, a first reference magnetic field strength and a second reference magnetic field strength which are stored in advance are obtained, then, the first magnetic field strength and the first reference magnetic field strength are compared, the second magnetic field strength and the second reference magnetic field strength are compared, and prompt information for prompting the moving direction of the mobile terminal is output according to the comparison result, so that the receiving coil of the mobile terminal is basically aligned with the transmitting coil of the wireless charging base, and the better wireless charging state is achieved.
Furthermore, the technical scheme provided by the embodiment of the disclosure is particularly suitable for a mobile terminal only including a single receiving coil, and when the wireless charging of the mobile terminal can only depend on the single receiving coil to work, the alignment degree of the receiving coil and the transmitting coil of the wireless charging base determines the wireless charging efficiency of the mobile terminal, so that on the premise of not increasing an additional internal structure, the technical scheme of the embodiment of the disclosure can guide the alignment position through the combination of a plurality of guidelines inside the mobile terminal, so that the receiving coil inside the mobile terminal can be aligned with the transmitting coil in the wireless charging base when the mobile terminal needs wireless charging, the charging efficiency of the wireless charging is greatly improved, and the user experience is further improved.
Fig. 11 is a block diagram illustrating a mobile terminal according to an example embodiment. For example, the mobile terminal 1100 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, or the like.
Referring to fig. 11, mobile terminal 1100 may include one or more of the following components: processing component 1102, memory 1104, power component 1106, multimedia component 1108, audio component 1110, input/output (I/O) interface 1112, sensor component 1114, and communications component 1116.
The memory 1104 is configured to store various types of data to support operation at the device 1000. Examples of such data include instructions for any application or method operating on mobile terminal 1100, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1104 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 1108 includes a screen that provides an output interface between the mobile terminal 1100 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1108 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 1000 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 1110 is configured to output and/or input audio signals. For example, audio component 1110 includes a Microphone (MIC) configured to receive external audio signals when mobile terminal 1100 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 1104 or transmitted via the communication component 1116. In some embodiments, the audio assembly 1110 further includes a speaker for outputting audio signals.
The I/O interface 1112 provides an interface between the processing component 1102 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 1114 includes one or more sensors for providing various aspects of state estimation for the mobile terminal 1100. For example, sensor assembly 1114 may detect the open/closed state of device 1000, the relative positioning of components such as a display and keypad of mobile terminal 1100, sensor assembly 1114 may also detect a change in the position of mobile terminal 1100 or a component of mobile terminal 1100, the presence or absence of user contact with mobile terminal 1100, orientation or acceleration/deceleration of mobile terminal 1100, and a change in the temperature of mobile terminal 1100. The sensor assembly 1114 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1114 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1114 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
In an exemplary embodiment, the mobile terminal 1100 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium including instructions, such as memory 1104 including instructions, executable by processor 1120 of mobile terminal 1100 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (11)
1. A wireless charging positioning method is characterized by being applied to a mobile terminal; the mobile terminal comprises a receiving coil, a first compass and a second compass; the method comprises the following steps:
after the mobile terminal enters a wireless charging state, acquiring a first magnetic field intensity detected by the first compass and a second magnetic field intensity detected by the second compass;
acquiring a first reference magnetic field strength and a second reference magnetic field strength which are stored in advance; the first reference magnetic field strength and the second reference magnetic field strength are respectively magnetic field strengths detected by the first compass and the second compass when the receiving coil is aligned with a transmitting coil on a wireless charging base; when the receiving coil is aligned with the transmitting coil, the mobile terminal is in a wireless charging state;
and comparing the first magnetic field strength with the first reference magnetic field strength, comparing the second magnetic field strength with the second reference magnetic field strength, and outputting prompt information according to a comparison result, wherein the prompt information is used for prompting the moving direction of the mobile terminal so as to align the receiving coil with the transmitting coil.
2. The method of claim 1, wherein the comparison results include a first comparison result and a second comparison result, the first comparison result being a comparison of the first magnetic field strength to the first reference magnetic field strength, the second comparison result being a comparison of the second magnetic field strength to the second reference magnetic field strength;
the outputting of the prompt information according to the comparison result includes:
acquiring information of the first moving direction according to the first comparison result, and acquiring information of the second moving direction according to the second comparison result; the first moving direction and the second moving direction are perpendicular to each other;
acquiring the information of the moving direction according to the information of the first moving direction and the information of the second moving direction;
and outputting the prompt information according to the information of the moving direction.
3. The method of claim 1, wherein the first direction of movement is a first direction when the first comparison result is that the first magnetic field strength is less than the first reference magnetic field strength, wherein the first direction of movement is a second direction when the first comparison result is that the first magnetic field strength is greater than the first reference magnetic field strength, and wherein the first direction and the second direction are opposite directions; when the mobile terminal moves in the first moving direction, an absolute value of a difference value of the first magnetic field strength and the first reference magnetic field strength decreases;
when the second magnetic field strength is smaller than the second reference magnetic field strength as a result of the second comparison, the second moving direction is a third direction, and when the second magnetic field strength is larger than the second reference magnetic field strength as a result of the second comparison, the second moving direction is a fourth direction, and the third direction and the fourth direction are opposite directions; the third direction is perpendicular to the first direction; when the mobile terminal moves in the second moving direction, an absolute value of a difference value of the second magnetic field strength and the second reference magnetic field strength decreases.
4. The method according to claim 1, wherein the prompt message includes an adjustment angle of a moving direction of the mobile terminal; the adjustment angle is calculated by the following formula:
A＝K*(B1-B1’)/(B2-B2’)
wherein, a is the adjustment angle, K is a proportionality coefficient obtained according to the position of the first compass and the position of the second compass, B1 is a first reference magnetic field strength, B1 'is the first magnetic field strength, B2 is a second reference magnetic field strength, and B2' is the second magnetic field strength.
5. The method of claim 4, wherein K is 1 when the first compass and the second compass are symmetric about a center of the receive coil.
6. The method of claim 1, wherein the prompt is a graphical prompt, a textual prompt, or a voice prompt.
7. The method of claim 1, wherein the mobile terminal comprises a main circuit board and a sub circuit board; the main circuit board is electrically connected with the sub circuit board;
the first compass is electrically connected with the main circuit board, and the second compass is electrically connected with the sub circuit board.
8. The method of claim 1, further comprising:
outputting a notification message for notifying that the receiving coil and the transmitting coil are aligned when it is determined that the first magnetic field strength is the same as the first reference magnetic field strength and the second magnetic field strength is the same as the second reference magnetic field strength according to the comparison result.
9. A wireless charging positioning device is characterized by being applied to a mobile terminal; the mobile terminal comprises a receiving coil, a first compass and a second compass; the device comprises:
the first acquisition module is used for acquiring a first magnetic field intensity detected by the first compass and a second magnetic field intensity detected by the second compass after the mobile terminal enters a wireless charging state;
the second acquisition module is used for acquiring a first reference magnetic field strength and a second reference magnetic field strength which are stored in advance; the first reference magnetic field strength and the second reference magnetic field strength are respectively magnetic field strengths detected by the first compass and the second compass when the receiving coil is aligned with a transmitting coil on a wireless charging base; when the receiving coil is aligned with the transmitting coil, the mobile terminal is in a wireless charging state;
and the comparison module is used for comparing the first magnetic field strength with the first reference magnetic field strength and the second magnetic field strength with the second reference magnetic field strength and outputting prompt information according to a comparison result, wherein the prompt information is used for prompting the moving direction of the mobile terminal so as to enable the receiving coil to be aligned with the transmitting coil.
10. A mobile terminal comprising a processor and a memory; the memory for storing a computer program; the processor, for executing the computer program stored on the memory, implements the method steps of any of claims 1-8.
11. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of claims 1 to 8.
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| CN201910644940.7A CN112242754A (en) | 2019-07-17 | 2019-07-17 | Wireless charging positioning method and device and mobile terminal |
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| CN201910644940.7A CN112242754A (en) | 2019-07-17 | 2019-07-17 | Wireless charging positioning method and device and mobile terminal |
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