Abstract:
One embodiment provides an electronic device including: a processor; a power supply module coupled to the processor; a receiving antenna coupled to the power supply module, wherein receiving antenna cooperates with a transmitting antenna of a wireless charger to charge the power supply module wirelessly; an inductor arranged with respect to the receiving antenna, wherein the inductor comprises a first wire and a second wire through which a first induced voltage and a second induced voltage are generated respectively; a comparator for comparing the first and second induced voltages; and wherein the processor determines if the receiving antenna is aligned with respect to the transmitting antenna of the wireless charger based upon the comparison of the first and second induced voltages. Other aspects are described and claimed.

Description:
CLAIM FOR PRIORITY 
       [0001]    This application claims priority to Chinese Application No. 201510883399.7, filed on Dec. 4, 2015, which is fully incorporated by reference herein. 
       FIELD 
       [0002]    The subject matter described herein relates to the field of electronic technologies, more specifically, it relates to an electronic device and an alignment detection apparatus. 
       BACKGROUND 
       [0003]    As the wireless charging function is increasingly popularized, it has become more and more important to improve the efficiency of wireless charging. When an electronic device is being charged, whether a charger end (that is, a transmitting end) and an electronic device end (that is, a receiving end) are properly aligned directly affects the charging efficiency of the electronic device. That is, if the transmitting end and the receiving end are not properly aligned, the charging efficiency would decrease significantly. Therefore, improving the effect of alignment between the transmitting end and the receiving end is a necessary means to improve the charging efficiency of electronic devices. 
         [0004]    Normally an electromagnet is added to each of the receiving end and the transmitting end, and the effect of alignment between the transmitting end and the receiving end is improved by virtue of the attraction between the two electromagnets. However, this method is not practical for light and thin electronic devices. 
       BRIEF SUMMARY 
       [0005]    In summary, an aspect provides an electronic device, comprising a processor; a power supply module operatively coupled to the processor; a receiving antenna operatively coupled to the power supply module, wherein the receiving antenna cooperates with a transmitting antenna of a wireless charger to charge the power supply module wirelessly; an inductor arranged with respect to the receiving antenna, wherein the inductor comprises a first wire and a second wire through which a first induced voltage and a second induced voltage are generated respectively; a comparator for comparing the first and second induced voltages; and a memory operatively coupled to the processor and that stores instructions executable by the processor to determine if the receiving antenna is aligned with respect to the transmitting antenna of the wireless charger based upon the comparison of the first and second induced voltages. 
         [0006]    The foregoing is a summary and thus may contain simplifications, generalizations, and omissions of details; consequently, those skilled in the art will appreciate that the summary is illustrative only and is not intended to be in any way limiting. 
         [0007]    For a better understanding of the embodiments, together with other and further features and advantages thereof, reference is made to the following description, taken in conjunction with the accompanying drawings. The scope of the invention will be pointed out in the appended claims. 
     
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         [0008]      FIG. 1  is a schematic structural diagram of an electronic device in accordance with an embodiment; 
           [0009]      FIG. 2  is a schematic structural diagram of an electronic device in accordance with an embodiment; 
           [0010]      FIG. 3  is a schematic structural diagram of an electronic device in accordance with an embodiment; 
           [0011]      FIG. 4  is a schematic structural diagram of an electronic device in accordance with an embodiment; 
           [0012]      FIG. 5  is a schematic structural diagram of an electronic device in accordance with an embodiment; 
           [0013]      FIG. 6  is a schematic structural diagram of an electronic device in accordance with an embodiment; 
           [0014]      FIG. 7  is a schematic structural diagram of an electronic device in accordance with an embodiment; 
           [0015]      FIG. 8  is a schematic structural diagram of an electronic device in accordance with an embodiment. 
       
    
    
     DETAILED DESCRIPTION 
       [0016]    It will be readily understood that the components of the embodiments, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations in addition to the described example embodiments. Thus, the following more detailed description of the example embodiments, as represented in the figures, is not intended to limit the scope of the embodiments, as claimed, but is merely representative of example embodiments. 
         [0017]    Reference throughout this specification to “one embodiment” or “an embodiment” (or the like) means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearance of the phrases “in one embodiment” or “in an embodiment” or the like in various places throughout this specification are not necessarily all referring to the same embodiment. 
         [0018]    Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments. One skilled in the relevant art will recognize, however, that the various embodiments can be practiced without one or more of the specific details, or with other methods, components, materials, et cetera. In other instances, well known structures, materials, or operations are not shown or described in detail to avoid obfuscation. 
         [0019]    It will be seen that, in the electronic device and the alignment detection apparatus provided by the embodiments, a circuit structure is used to adjust the effect of alignment between the receiving antenna and the transmitting antenna to ensure that the receiving antenna and the transmitting antenna are aligned on the first dimension, so as to improve the charging efficiency of the electronic device. Moreover, in the electronic device provided by the embodiments, the induction circuit comprises two wires, which are small in size and light in weight, thereby adapting to the lightening and thinning of electronic devices, and improving the practical usability of the electronic devices. 
         [0020]    An embodiment provides an electronic device, as shown in  FIG. 1 . The electronic devices includes a receiving antenna  100  for wireless charging, wherein the receiving antenna  100  is configured to receive a radiation signal from a transmitting antenna for wireless charging (not shown in the figure). The electronic devices includes an induction circuit  200 , wherein the induction circuit  200  is on a first side of the receiving antenna  100 , and as shown in  FIG. 2 , the induction circuit  200  comprises a first wire L 1  and a second wire L 2  that are disposed opposite to each other on a first dimension. The electronic device includes, when the transmitting antenna works, the first wire L 1  generates a first induced voltage based on a magnetic flux through a first region encircled by the first wire L 1 , and when the transmitting antenna works, the second wire L 2  generates a second induced voltage based on a magnetic flux through a second region encircled by the second wire L 2 , wherein areas of the first region and the second region are the same. The electronic device includes a processing circuit  300 , wherein the processing circuit  300  is electrically connected to the induction circuit  200 , and is configured to determine, based on the first induced voltage and the second induced voltage, whether the receiving antenna  100  and the transmitting antenna are aligned on the first dimension. 
         [0021]    It should be noted that, when respective loops formed by the two respective wires have an identical effective induction area in a same electromagnetic field, the respective induced voltages generated by the two respective wires in the electromagnetic field are the same, and in this case, the difference between the two induced voltages is close to zero. When respective loops formed by the two respective wires have different effective induction areas in a same electromagnetic field, the respective induced voltages generated by the two respective wires in the electromagnetic field are not equal, and in this case, the difference between the two induced voltages is relatively large, and deviates from zero. 
         [0022]    In the electronic device provided by this embodiment, when the transmitting antenna works, the first wire L 1  generates the first induced voltage based on the first region encircled by the first wire L 1 . When the transmitting antenna works, the second wire L 2  generates the second induced voltage based on the second region encircled by the second wire L 2 , wherein the area of the first region is the same as that of the second region. Therefore, when the transmitting antenna works, if the receiving antenna and the transmitting antenna are aligned, the area of the radiation signal generated by the transmitting antenna evenly covers the first region and the second region. In this case, the overlapping area between the area of the radiation signal generated by the transmitting antenna and the first region is the same as the overlapping area between the area of the radiation signal generated by the transmitting antenna and the second region. That is, the effective induction area of the first wire L 1  is the same as the effective induction area of the second wire L 2 , such that the first induced voltage is equal to the second induced voltage. 
         [0023]    If the receiving antenna and the transmitting antenna are not aligned, the area of the radiation signal generated by the transmitting antenna is not evenly distributed over the first region and the second region. In this case, the overlapping area between the area of the radiation signal generated by the transmitting antenna and the first region is not the same as the overlapping area between the area of the radiation signal generated by the transmitting antenna and the second region. That is, the effective induction area of the first wire L 1  is not the same as the effective induction area of the second wire L 2 , such that the first induced voltage is not equal to the second induced voltage. 
         [0024]    Therefore, the electronic device provided by this embodiment can determine, based on the first induced voltage and the second induced voltage, whether the receiving antenna  100  and the transmitting antenna are aligned on the first dimension. Specifically, when the first induced voltage is equal to the second induced voltage, it is determined that the receiving antenna  100  and the transmitting antenna are aligned on the first dimension. When the first induced voltage is not equal to the second induced voltage, it is determined that the receiving antenna  100  and the transmitting antenna are not aligned on the first dimension. 
         [0025]    It should further be noted that, in this embodiment, the central region of the receiving antenna  100  is provided with a through-hole. The projection of the first region and the second region in the direction perpendicular to the plane in which the receiving antenna  100  is located is within the projection of the through-hole so as to ensure that after the receiving antenna  100  and the transmitting antenna are aligned by using the induction circuit  200  and the processing circuit  300 . the radiation signal from the transmitting antenna can be received on the first dimension by the receiving antenna  100  to a maximum degree. 
         [0026]    Based on the foregoing embodiment, in an embodiment, as shown in  FIG. 2 , the first wire L 1  and the second wire L 2  are symmetrically disposed on the first dimension. That is, the first wire L 1  and the second wire L 2  are symmetric about the center of the central through-hole of the receiving antenna  100 . In this embodiment, both the shape and the area of the first region and the second region are exactly the same. The second region exactly overlaps the first region after the second region is rotated 180° about the center of the central through-hole of the receiving antenna  100 , improving the precision of adjustment of the induction circuit  200  and the processing circuit  300 . However, the embodiments are not limited to this. In other embodiments, the shape of the first region and the second region may also be different, as shown in  FIG. 3 , as long as it is ensured that the first region and the second region are disposed opposite to each other about the center of the central through-hole of the receiving antenna  100  and the area of the first region is the same as that of the second region. 
         [0027]    Based on any one of the foregoing embodiments, in an embodiment, the processing circuit  300  is configured to obtain the first induced voltage and the second induced voltage. The processing circuit  300  is configured to compare the first induced voltage with the second induced voltage. The processing circuit  300  is configured to determine, based on a comparison result of the first induced voltage and the second induced voltage, whether the receiving antenna  100  and the transmitting antenna are aligned on the first dimension. 
         [0028]    Based on the foregoing embodiment, in an embodiment, as shown in  FIG. 4 , the processing circuit  300  includes a first monitoring unit  310 , wherein the first monitoring unit  310  is electrically connected to the induction circuit  200  and is configured to monitor the first induced voltage and the second induced voltage, compare the first induced voltage with the second induced voltage, and output a comparison result of the first induced voltage and the second induced voltage. The processing circuit  300  includes a processing unit  320 , wherein the processing unit  320  is electrically connected to the first monitoring unit  310 , and is configured to determine, based on the comparison result of the first induced voltage and the second induced voltage, whether the receiving antenna  100  and the transmitting antenna are aligned on the first dimension, and send out a prompt message. 
         [0029]    It should be noted that, in an embodiment, the first monitoring unit  310  comprises a comparator configured to compare the first induced voltage with the second induced voltage. Because the input signal of the comparator is a direct current signal, and the induced signal generated by the first wire L 1  and the second wire L 2  is an alternating current signal, in this embodiment, the first monitoring unit  310  further comprises a rectifier. 
         [0030]    Specifically, in an embodiment, the first monitoring unit  310  comprises: a first rectifier  311 , a second rectifier  312 , and a first comparator  313 , wherein one end of the first rectifier  311  is electrically connected to the first wire L 1  and the other end of the first rectifier  311  is electrically connected to a first input end of the first comparator  313 , such that the first rectifier  311  converts the alternating current signal outputted by the first wire L 1  into a direct current signal and outputs the direct current signal to the first comparator  313 . One end of the second rectifier  312  is electrically connected to the second wire L 2  and the other end of the second rectifier  312  is electrically connected to a second input end of the first comparator  313 , such that the second rectifier  312  converts the alternating current signal outputted by the second wire L 2  into a direct current signal and outputs the direct current signal to the second output end of the first comparator  313 . The first comparator  313  is configured to compare the signals inputted to the first input end with the second input end thereof, and output a comparison result, wherein the comparison result can represent the comparison result of the first induced voltage and the second induced voltage. 
         [0031]    After receiving the comparison result outputted by the first monitoring unit  310 , the processing unit  320  determines, based on the comparison result, whether the receiving antenna  100  and the transmitting antenna are aligned on the first dimension. Specifically, when the first induced voltage is equal to the second induced voltage, it is determined that the receiving antenna  100  and the transmitting antenna are aligned on the first dimension, and a first prompt message is sent out to hint that the receiving antenna  100  and the transmitting antenna have been aligned on the first dimension. When the first induced voltage is not equal to the second induced voltage, it is determined that the receiving antenna  100  and the transmitting antenna are not aligned on the first dimension, and a second prompt message is sent out to hint that the receiving antenna  100  and the transmitting antenna are not aligned at present. 
         [0032]    In another embodiment, the processing circuit  300  is configured to obtain a comparison result of the first induced voltage and the second induced voltage, and determine, based on the comparison result of the first induced voltage and the second induced voltage, whether the receiving antenna  100  and the transmitting antenna are aligned on the first dimension. 
         [0033]    Based on the foregoing embodiment, in an embodiment, as shown in  FIG. 5 , the processing circuit  300  includes a first monitoring unit  310 , wherein the first monitoring unit  310  is electrically connected to the induction circuit  200 , and is configured to monitor the comparison result of the first induced voltage and the second induced voltage. The processing circuit  300  includes a processing unit  320 , wherein the processing unit  320  is electrically connected to the first monitoring unit  310 , and is configured to determine, based on the comparison result of the first induced voltage and the second induced voltage, whether the receiving antenna  100  and the transmitting antenna are aligned on the first dimension, and send out a prompt message. 
         [0034]    Based on the foregoing embodiment, in an embodiment, still as shown in  FIG. 5 , a negative electrode of the first wire L 1  is electrically connected to a first preset voltage V 1 , a positive electrode of the first wire L 1  is electrically connected to a positive electrode of the second wire L 2 , and the first monitoring unit  310  comprises: a first voltage monitor  314  electrically connected to a negative electrode of the second wire L 2 , wherein the first voltage monitor  314  is configured to monitor the voltage of the negative electrode of the second wire L 2 , and output the voltage of the negative electrode of the second wire L 2 . The processing unit  320  is configured to determine, based on the first preset voltage V 1  and the voltage of the negative electrode of the second wire L 2  that is monitored by the first voltage monitor  314 , whether the receiving antenna  100  and the transmitting antenna are aligned on the first dimension, and send out a prompt message. 
         [0035]    Specifically, when the voltage of the negative electrode of the second wire L 2  monitored by the first voltage monitor  314  is equal to the first preset voltage V 1 , it is determined that the receiving antenna  100  and the transmitting antenna are aligned on the first dimension, and a first prompt message is sent out to hint that the receiving antenna  100  and the transmitting antenna have been aligned on the first dimension. When the voltage of the negative electrode of the second wire L 2  monitored by the first voltage monitor  314  is not equal to the first preset voltage V 1 , it is determined that the receiving antenna  100  and the transmitting antenna are not aligned on the first dimension, and a second prompt message is sent out to hint that the receiving antenna  100  and the transmitting antenna are not aligned on the first dimension at present. 
         [0036]    Based on the foregoing embodiment, in a preferred embodiment, a first capacitor C 1  is disposed between the first voltage monitor  314  and the negative electrode of the second wire L 2 , and is configured to filter an interference signal in an output signal from the negative electrode of the second wire L 2 . 
         [0037]    Based on any one of the foregoing embodiments, in an embodiment, the first monitoring unit  310  further comprises: a first resistor R 1 , wherein one end of the first resistor R 1  is electrically connected to a common end of the first capacitor C 1  and the first voltage monitor  314 , and the other end of the first resistor R 1  is electrically connected to a second preset voltage V 2 . The voltage value of the second preset voltage V 2  is a positive value, and the absolute value of the second preset voltage V 2  is greater than the absolute value of the first preset voltage V 1 , such that it is ensured that the voltage at the common end of the first capacitor C 1  and the first voltage monitor  314  is a positive value, that is, the input signal to the first voltage monitor  314  is a positive signal. Preferably, in this embodiment, the first voltage monitor  314  is a first analog to digital converter, and is configured to monitor the voltage of the negative electrode of the second wire L 2 , convert a monitored voltage value into a digital signal, and output the digital signal to the processing unit  320 , so that the processing unit  320  determines, based on the first preset voltage V 1  and the voltage of the negative electrode of the second wire L 2  that is monitored by the first voltage monitor  314 , whether the receiving antenna  100  and the transmitting antenna are aligned on the first dimension, and sends out a prompt message. 
         [0038]    It should be noted that, based on any one of the foregoing embodiments, in an embodiment, in order to simplify the structure and operation of the processing circuit  300 , the voltage value of the first preset voltage V 1  is zero, that is, the negative electrode of the first wire L 1  is directly grounded. However, the present embodiment is not limited to this, and in other embodiments, the first preset voltage V 1  may also be another voltage value, depending on a specific situation. 
         [0039]    Based on any one of the foregoing embodiments, in an embodiment, as shown in  FIG. 6 , the induction circuit  200  further includes a third wire L 3  and a fourth wire L 4  disposed opposite to each other on a second dimension. When the transmitting antenna works, the third wire L 3  generates a third induced voltage based on a magnetic flux through a third region encircled by the third wire L 3 , and when the transmitting antenna works, the fourth wire L 4  generates a fourth induced voltage based on a magnetic flux through a fourth region encircled by the fourth wire L 4 , wherein the area of the third region is equal to that of the fourth region. 
         [0040]    In this embodiment, the processing circuit  300  is further configured to determine, based on the third induced voltage and the fourth induced voltage, whether the receiving antenna  100  and the transmitting antenna are aligned on the second dimension, so as to further improve the precision of alignment of the receiving antenna  100  and the transmitting antenna. Specifically, when the third induced voltage is equal to the fourth induced voltage, it is determined that the receiving antenna  100  and the transmitting antenna are aligned on the second dimension. When the third induced voltage is not equal to the fourth induced voltage, it is determined that the receiving antenna  100  and the transmitting antenna are not aligned on the second dimension. 
         [0041]    It should be noted that, in this embodiment, the projection of the third region and the fourth region in the direction perpendicular to the plane in which the receiving antenna  100  is located is within the projection of the central through-hole of the receiving antenna  100 . This ensures that after the receiving antenna  100  and the transmitting antenna are aligned by using the induction circuit  200  and the processing circuit  300 , the radiation signal from the transmitting antenna can be received on the second dimension by the receiving antenna  100  to a maximum degree. 
         [0042]    Based on the foregoing embodiment, in an embodiment, the third wire L 3  and the fourth wire L 4  are symmetrically disposed on the second dimension. That is, the third wire L 3  and the fourth wire L 4  are symmetric about the center of the central through-hole of the receiving antenna  100 . In this embodiment, both the shape and the area of the third region and the fourth region are exactly the same, and the fourth region exactly overlaps the third region after the fourth region is rotated 180° about the center of the central through-hole of the receiving antenna  100 , improving the precision of adjustment of the induction circuit  200  and the processing circuit  300 . However, the embodiments of the present application are not limited to this. In other embodiments, the shape of the third region and the fourth region may also be different, as long as it is ensured that the third region and the fourth region are disposed opposite to each other about the center of the central through-hole of the receiving antenna  100 , and the area of the third region is the same as that the fourth region. 
         [0043]    Based on the foregoing embodiment, in an embodiment, the processing circuit  300  is configured to obtain the third induced voltage and the fourth induced voltage, compare the third induced voltage with the fourth induced voltage, and determine, based on a comparison result of the third induced voltage and the fourth induced voltage, whether the receiving antenna  100  and the transmitting antenna are aligned on the second dimension. 
         [0044]    Specifically, based on the foregoing embodiment, in an embodiment, as shown in  FIG. 7 , the processing circuit  300  includes a second monitoring unit  330 , wherein the second monitoring unit  330  is electrically connected to the induction circuit  200 . The second monitoring unit  330  is configured to monitor the third induced voltage and the fourth induced voltage, compare the third induced voltage with the fourth induced voltage, and output a comparison result of the third induced voltage and the fourth induced voltage. The processing unit  320  is electrically connected to the second monitoring unit  330 , and is configured to determine, based on the comparison result of the third induced voltage and the fourth induced voltage, whether the receiving antenna  100  and the transmitting antenna are aligned on the second dimension, and send out a prompt message. 
         [0045]    Preferably, the second monitoring unit  330  comprises: a third rectifier  331 , a fourth rectifier  332 , and a second comparator  333 , wherein one end of the third rectifier  331  is electrically connected to the third wire L 3  and the other end of the third rectifier  311  is electrically connected to a first input end of the second comparator  333 , such that the third rectifier  331  converts the alternating current signal outputted by the third wire L 3  into a direct current signal and outputs the direct current signal to the second comparator  333 . One end of the fourth rectifier  332  is electrically connected to the fourth wire L 4  and the other end of the fourth rectifier  312  is electrically connected to a second input end of the second comparator  333 , such that the fourth rectifier  332  converts the alternating current signal outputted by the fourth wire L 4  into a direct current signal and outputs the direct current signal to the second comparator  333 . The second comparator  333  is configured to compare the signals inputted to the first input end with the second input end thereof, and output a comparison result to the processing unit  320 , wherein the comparison result can represent the comparison result of the third induced voltage and the fourth induced voltage. 
         [0046]    In another embodiment, the processing circuit  300  is configured to obtain a comparison result of the third induced voltage and the fourth induced voltage, and determine, based on the comparison result thereof, whether the receiving antenna  100  and the transmitting antenna are aligned on the second dimension. 
         [0047]    Based on the foregoing embodiment, in an embodiment, as shown in  FIG. 8 , the processing circuit  300  comprises a second monitoring unit  330 , wherein the second monitoring unit  330  is electrically connected to the induction circuit  200  and is configured to monitor the comparison result of the third induced voltage and the fourth induced voltage. The processing unit  320  is electrically connected to the second monitoring unit  330  and is configured to determine, based on the comparison result thereof, whether the receiving antenna  100  and the transmitting antenna are aligned on the second dimension, and send out a prompt message. 
         [0048]    Based on the foregoing embodiment, in an embodiment, still as shown in  FIG. 8 , a negative electrode of the third wire L 3  is electrically connected to a third preset voltage V 3  and a positive electrode of the third wire L 3  is electrically connected to a positive electrode of the fourth wire L 4 . The second monitoring unit  330  includes a second voltage monitor  334  electrically connected to a negative electrode of the fourth wire L 4 , wherein the second voltage monitor  334  is configured to monitor the voltage of the negative electrode of the fourth wire L 4 , and output the voltage of the negative electrode of the fourth wire L 4 . The processing unit  320  is configured to determine, based on the third preset voltage V 3  and the voltage of the negative electrode of the fourth wire L 4  that is monitored by the second voltage monitor, whether the receiving antenna  100  and the transmitting antenna are aligned on the second dimension, and send out a prompt message. 
         [0049]    Specifically, when the voltage of the negative electrode of the fourth wire L 4  monitored by the second voltage monitor  334  is equal to the third preset voltage V 3 , it is determined that the receiving antenna  100  and the transmitting antenna are aligned on the second dimension, and a third prompt message is sent out to prompt that the receiving antenna  100  and the transmitting antenna have been aligned on the second dimension. When the voltage of the negative electrode of the fourth wire L 4  monitored by the second voltage monitor  334  is not equal to the third preset voltage V 3 , it is determined that the receiving antenna  100  and the transmitting antenna are not aligned on the second dimension, and a fourth prompt message is sent out to prompt that the receiving antenna  100  and the transmitting antenna are not aligned on the second dimension at present. 
         [0050]    Based on the foregoing embodiment, in a preferred embodiment, a second capacitor C 2  is disposed between the second voltage monitor  334  and the negative electrode of the fourth wire L 4 , and is configured to filter an interference signal in a signal outputted from the negative electrode of the fourth wire L 4 . 
         [0051]    Based on the foregoing embodiment, in an embodiment, the second voltage monitoring unit  334  further includes: a second resistor R 2 , wherein one end of the second resistor R 2  is electrically connected to a common end of the second capacitor C 2  and the second voltage monitor  334  and the other end of the second resistor R 2  is electrically connected to a fourth preset voltage V 4 . The voltage value of the fourth preset voltage V 4  is a positive value and the absolute value of the fourth preset voltage V 4  is greater than the absolute value of the third preset voltage V 3 , such that it is ensured that the voltage at the common end of the second capacitor C 2  and the second voltage monitor  334  is a positive value, that is, the input signal to the second voltage monitor  334  is a positive signal. 
         [0052]    Preferably, in this embodiment, the second voltage monitor  334  is a second analog to digital converter and is configured to: monitor the voltage of the negative electrode of the fourth wire L 4 ; convert a monitored voltage value into a digital signal; and output the digital signal to the processing unit  320 . This is done so that the processing unit  320  determines, based on the third preset voltage V 3  and the voltage of the negative electrode of the fourth wire L 4  that is monitored by the second voltage monitor, whether the receiving antenna  100  and the transmitting antenna are aligned on the second dimension, and sends out a prompt message. 
         [0053]    It should be noted that, in this embodiment, in order to simplify the structure and operation of the processing circuit  300 , the voltage value of the third preset voltage V 3  is zero, that is, the negative electrode of the third wire L 3  is directly grounded. However, the embodiments of the present application are not limited to this, and in other embodiments, the third preset voltage V 3  may also be another voltage value depending on a specific situation. 
         [0054]    It should further be noted that, in order to further simplify the structure and operation of the processing circuit  300 , the second preset voltage V 2  is equal to the fourth preset voltage V 4 . However, the embodiments of the present application are not limited to this, and in other embodiments, the second preset voltage V 2  and the fourth preset voltage V 4  may be not equal, depending on a specific situation. 
         [0055]    Based on any one of the foregoing embodiments, in a preferred embodiment, the processing unit  320  is a processor. However, the embodiments of the present application are not limited to this, depending on a specific situation. 
         [0056]    In summary of the above, in the electronic device provided by the embodiments, the induction circuit  200  and the processing circuit  300  are used to adjust the effect of alignment between the receiving antenna  100  and the transmitting antenna to ensure that the receiving antenna  100  and the transmitting antenna are aligned on the first dimension, so as to improve the charging efficiency of the electronic device. Moreover, in the electronic device provided by the embodiments, the induction circuit  200  consists of wires only, and is small in size and light in weight, adapting to the trend of lightening and thinning of electronic devices, and improving the practicability of the electronic devices. 
         [0057]    In addition, an embodiment further provides an alignment detection apparatus, wherein the alignment detection apparatus includes an induction circuit, located between a receiving antenna for wireless charging and a transmitting antenna for wireless charging, wherein the induction circuit comprises a first wire and a second wire. The first wire and the second wire are disposed opposite to each other on a first dimension. The first wire generates a first induced voltage based on a magnetic flux through a first region encircled by the first wire. The second wire generates a second induced voltage based on a magnetic flux through a second region encircled by the second wire, wherein areas of the first region and the second region are the same. 
         [0058]    The alignment detection apparatus includes a voltage monitoring circuit, electrically connected to the induction circuit, and is configured to obtain preset parameters of the first induced voltage and the second induced voltage, wherein the preset parameters of the first induced voltage and the second induced voltage are used to determine whether the receiving antenna and the transmitting antenna are aligned on the first dimension. 
         [0059]    It should be noted that, when respective loops formed by the two respective wires have an identical effective induction area in a same electromagnetic field, the respective induced voltages generated by the two respective wires in the electromagnetic field are the same, and in this case, the difference between the two induced voltages is close to zero. When respective loops formed by the two respective wires have different effective induction areas in a same electromagnetic field, the respective induced voltages generated by the two respective wires in the electromagnetic field are not equal, and in this case, the difference between the two induced voltages is relatively large, and deviates from zero. 
         [0060]    In the alignment detection apparatus provided by this embodiment, when the transmitting antenna works, the first wire generates the first induced voltage based on the first region encircled by the first wire. When the transmitting antenna works, the second wire generates the second induced voltage based on the second region encircled by the second wire, wherein the area of the first region is the same as that of the second region. Therefore, when the transmitting antenna works, if the receiving antenna and the transmitting antenna are aligned, the area of the radiation signal generated by the transmitting antenna evenly covers the first region and the second region. In this case, the overlapping area between the area of the radiation signal generated by the transmitting antenna and the first region is the same as the overlapping area between the area of the radiation signal generated by the transmitting antenna and the second region. That is, the effective induction area of the first wire is the same as the effective induction area of the second wire, such that the first induced voltage is equal to the second induced voltage. 
         [0061]    If the receiving antenna and the transmitting antenna are not aligned, the area of the radiation signal generated by the transmitting antenna is not evenly distributed over the first region and the second region. In this case, the overlapping area between the area of the radiation signal generated by the transmitting antenna and the first region is not the same as the overlapping area between the area of the radiation signal generated by the transmitting antenna and the second region. That is, the effective induction area of the first wire is not the same as the effective induction area of the second wire, such that the first induced voltage is not equal to the second induced voltage. 
         [0062]    Therefore, the alignment detection apparatus provided by this embodiment can obtain preset parameters of the first induced voltage and the second induced voltage and determine, by using the preset parameters of the first induced voltage and the second induced voltage, whether the receiving antenna and the transmitting antenna are aligned on the first dimension. Specifically, when the first induced voltage is equal to the second induced voltage, it is determined that the receiving antenna and the transmitting antenna are aligned on the first dimension. When the first induced voltage is not equal to the second induced voltage, it is determined that the receiving antenna and the transmitting antenna are not aligned on the first dimension. 
         [0063]    It should be further noted that, in this embodiment, the alignment detection apparatus may be disposed on the side where the receiving antenna is located, or may also be disposed on the side where the transmitting antenna is located. However, the embodiments of the present application are not limited to this, depending on a specific situation. 
         [0064]    Based on the foregoing embodiment, in an embodiment, the voltage monitoring circuit is configured to obtain a voltage value of the first induced voltage and a voltage value of the second induced voltage, and output the voltage value of the first induced voltage and the voltage value of the second induced voltage. When the voltage value of the first induced voltage is equal to the voltage value of the second induced voltage, it is determined that the receiving antenna and the transmitting antenna are aligned on the first dimension. When the voltage value of the first induced voltage is not equal to the voltage value of the second induced voltage, it is determined that the receiving antenna and the transmitting antenna are not aligned on the first dimension. 
         [0065]    In another embodiment, the voltage monitoring circuit is configured to obtain a comparison result of the first induced voltage and the second induced voltage. When the comparison result is zero, it is determined that the receiving antenna and the transmitting antenna are aligned on the first dimension. When the comparison result is not zero, it is determined that the receiving antenna and the transmitting antenna are not aligned on the first dimension. 
         [0066]    Based on any one of the foregoing embodiments, in an embodiment, the induction circuit further includes a third wire and a fourth wire disposed opposite to each other on a second dimension. When the transmitting antenna works, the third wire generates a third induced voltage based on a magnetic flux through a third region encircled by the third wire, and when the transmitting antenna works, the fourth wire generates a fourth induced voltage based on a magnetic flux through a fourth region encircled by the fourth wire, wherein areas of the third region and the fourth region are the same. In the induction circuit, the voltage monitoring circuit is further configured to obtain preset parameters of the third induced voltage and the fourth induced voltage, wherein the preset parameters of the third induced voltage and the fourth induced voltage are used to determine whether the receiving antenna and the transmitting antenna are aligned on the second dimension. 
         [0067]    Based on the foregoing embodiment, in an embodiment, the voltage monitoring circuit is configured to obtain a voltage value of the third induced voltage and a voltage value of the fourth induced voltage, and output the voltage value of the third induced voltage and the voltage value of the fourth induced voltage. When the voltage value of the third induced voltage is equal to the voltage value of the fourth induced voltage, it is determined that the receiving antenna and the transmitting antenna are aligned on the second dimension. When the voltage value of the third induced voltage is not equal to the voltage value of the fourth induced voltage, it is determined that the receiving antenna and the transmitting antenna are not aligned on the second dimension. 
         [0068]    In another embodiment, the voltage monitoring circuit is configured to obtain a comparison result of the third induced voltage and the fourth induced voltage and output the comparison result thereof. When the comparison result thereof is zero, it is determined that the receiving antenna and the transmitting antenna are aligned on the second dimension. When the comparison result thereof is not zero, it is determined that the receiving antenna and the transmitting antenna are not aligned on the second dimension. 
         [0069]    Because both the function and the structure of the induction circuit in the alignment detection apparatus provided by the embodiments are the same as those of the induction circuit in the electronic device provided by the embodiments, and the function and the structure of the voltage monitoring circuit in the alignment detection apparatus are also similar to those of the first monitoring unit and/or the second monitoring unit in the electronic device, detailed description is not provided again herein. For details, refer to the description regarding the induction circuit, the first monitoring unit, and the second monitoring unit in the electronic device. 
         [0070]    It is obvious from the above that, in the alignment detection apparatus provided by the embodiments, a circuit structure is used to adjust the effect of alignment between the receiving antenna and the transmitting antenna to ensure that the receiving antenna and the transmitting antenna are aligned on the first dimension and/or the second dimension, so as to improve the charging efficiency of an electronic device that uses the alignment detection apparatus. Moreover, in the alignment detection apparatus provided by the embodiments, the induction circuit consists of wires only, and is small in size and light in weight, adapting to the trend of lightening and thinning of electronic devices, and improves the charging efficiency of the electronic devices that use the alignment detection apparatus. 
         [0071]    As used herein, the singular “a” and “an” may be construed as including the plural “one or more” unless clearly indicated otherwise. 
         [0072]    This disclosure has been presented for purposes of illustration and description but is not intended to be exhaustive or limiting. Many modifications and variations will be apparent to those of ordinary skill in the art. The example embodiments were chosen and described in order to explain principles and practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated. 
         [0073]    Thus, although illustrative example embodiments have been described herein with reference to the accompanying figures, it is to be understood that this description is not limiting and that various other changes and modifications may be affected therein by one skilled in the art without departing from the scope or spirit of the disclosure.