WO2023169422A1

WO2023169422A1 - Electronic compass calibration method and apparatus, electronic device, and storage medium

Info

Publication number: WO2023169422A1
Application number: PCT/CN2023/080101
Authority: WO
Inventors: 张云波; 罗春晖
Original assignee: 维沃移动通信有限公司
Priority date: 2022-03-08
Filing date: 2023-03-07
Publication date: 2023-09-14
Also published as: CN114777755A

Abstract

An electronic compass calibration method and apparatus, an electronic device (90, 100), and a storage medium, which relate to the technical field of communications. The electronic device (90, 100) comprises: a target key (12), at least one Hall sensor (13, 14), and an electronic compass (15). The calibration method comprises: acquiring target position information of the target key (12) by means of the at least one Hall sensor (13, 14), wherein the target position information is used for indicating the key position of the target key (12) on the electronic device (90, 100); determining a target calibration parameter by means of the electronic compass (15) according to the target position information; and calibrating a magnetic field parameter output by the electronic compass (15) by using the target calibration parameter.

Description

Electronic compass calibration method, device, electronic equipment and storage medium

Cross-references to related applications

This application claims priority to Chinese Patent Application No. 202210220956.7 filed in China on March 8, 2022, the entire content of which is incorporated herein by reference.

Technical field

This application belongs to the field of communication technology, and specifically relates to an electronic compass calibration method, device, electronic equipment and storage medium.

Background technique

Usually, an electronic compass is provided in the electronic device, so that when the user wants to know the direction of the geomagnetic field, the user can trigger the electronic device to detect the geomagnetic field through the electronic compass and display the detected geomagnetic field direction, so that the user can view the geomagnetic field. Magnetic field direction.

However, since there may be interference magnetic fields in electronic equipment, such as the magnetic fields formed by mute keys and Hall sensors in electronic equipment, the interference magnetic field may interfere with the detection of the geomagnetic field by the electronic compass. Therefore, it may cause errors detected by the electronic compass. The direction of the geomagnetic field is deflected.

This results in poor accuracy of the electronic compass.

Contents of the invention

The purpose of the embodiments of the present application is to provide an electronic compass calibration method, device, electronic equipment and storage medium, which can solve the problem of poor accuracy of the electronic compass.

In a first aspect, embodiments of the present application provide an electronic compass calibration method. The electronic compass calibration method includes: obtaining target position information of a target button of the electronic device through at least one Hall sensor, and the target position information is used to indicate the target. The key position of the key on the electronic device; according to the target position information, the target calibration parameters are determined through the electronic compass; the target calibration parameters are used to calibrate the magnetic field parameters output by the electronic compass.

In a second aspect, embodiments of the present application provide an electronic compass calibration device. The electronic compass calibration device includes: a target button, at least one Hall sensor, and an electronic compass. The electronic compass calibration device further includes: an acquisition module, a determination module, and a compass calibration device. Calibration module. The acquisition module is configured to acquire the target position information of the target button of the electronic compass calibration device through at least one Hall sensor. The target position information is used to indicate the button position of the target button on the electronic compass calibration device. The determination module is used to determine the target calibration parameters through the electronic compass based on the target position information obtained by the acquisition module. The calibration module is used to use the target calibration parameters determined by the determination module to calculate the magnetic field output by the electronic compass. Parameters are calibrated.

In a third aspect, embodiments of the present application provide an electronic device. The electronic device includes: a printed circuit board (PCB) of the electronic device provided with: a target button; and at least one Hall sensor, the at least one Hall sensor being opposite to the target button. It is set that the at least one Hall sensor is used to obtain the target position information of the target button, and the target position information is used to indicate the button position of the target button on the electronic device; an electronic compass is arranged on the PCB away from the target button. one end; wherein, the electronic compass is used to determine the target calibration parameters based on the target position information, so that the electronic device can use the target calibration parameters to calibrate the magnetic field parameters output by the electronic compass.

In a fourth aspect, embodiments of the present application provide an electronic device. The electronic device includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. The programs or instructions are processed by the processor. When the processor is executed, the steps of the method described in the first aspect are implemented.

In a fifth aspect, embodiments of the present application provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented. .

In a sixth aspect, embodiments of the present application provide a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the first aspect. the method described.

In a seventh aspect, embodiments of the present application provide a computer program product, the program product is stored in a storage medium, and the program product is executed by at least one processor to implement the method as described in the first aspect.

In the embodiment of the present application, the electronic device can obtain the target position information of the target key through at least one Hall sensor (the target position information is used to indicate the key position of the target key on the electronic compass calibration device), and according to the The target position information determines the target calibration parameters through the electronic compass, so that the electronic device can calibrate the magnetic field parameters output by the electronic compass according to the target calibration parameters. In this solution, because the electronic device can obtain the target position information of the target button that may interfere with the electronic compass's detection of the geomagnetic field, and calibrate the magnetic field parameters output by the electronic compass based on the target calibration parameters determined by the target position information, that is, the target calibration parameters It is related to the target position information, so the magnetic field of the target button can be prevented from interfering with the geomagnetic field detected by the electronic compass, thereby avoiding deviation in the direction of the geomagnetic field detected by the electronic compass. In this way, the accuracy of the electronic compass can be improved.

Description of the drawings

Figure 1 is one of the flow charts of an electronic compass calibration method provided by an embodiment of the present application;

Figure 2 is the second flow chart of an electronic compass calibration method provided by an embodiment of the present application;

Figure 3 is the third flow chart of an electronic compass calibration method provided by an embodiment of the present application;

Figure 4 is one of the structural schematic diagrams of an electronic compass calibration device provided by an embodiment of the present application;

Figure 5 is the fourth flow chart of an electronic compass calibration method provided by an embodiment of the present application;

Figure 6 is a second structural schematic diagram of an electronic compass calibration device provided by an embodiment of the present application;

Figure 7 is the third structural schematic diagram of an electronic compass calibration device provided by an embodiment of the present application;

Figure 8 is the fourth structural schematic diagram of an electronic compass calibration device provided by an embodiment of the present application;

Figure 9 is a fifth structural schematic diagram of an electronic compass calibration device provided by an embodiment of the present application;

Figure 10 is the sixth structural schematic diagram of an electronic compass calibration device provided by an embodiment of the present application;

Figure 11 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

FIG. 12 is a schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the figures so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in orders other than those illustrated or described herein, and that "first," "second," etc. are distinguished Objects are usually of one type, and the number of objects is not limited. For example, the first Hall sensor may be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

The electronic compass calibration method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios.

With the development of communication technology, the functions attached to electronic equipment are becoming more and more abundant, so the components integrated in electronic equipment are gradually increasing. For example, electronic compasses can be added to electronic equipment, and in the current stack of electronic equipment, The electronic compass is usually arranged together with the mute button Hall, so that when the user needs to know the geomagnetic direction (i.e. current positioning), the electronic device can detect the current geomagnetic field environment through the electronic compass and display the detected geomagnetic field direction, so that the user can View current location and direction.

However, both the electronic compass and the mute key Hall are magnetic sensors. Since the judgment of the mute key Hall function requires an external magnet to provide a certain magnetic field, the position of the mute key can be determined by detecting the size of the magnetic field. When the external magnetic field set by the mute key When changes occur, the magnetic field detected by the electronic compass may be misjudged. In related technology, the layout of the electronic compass and the mute key magnet can be larger than the preset distance (for example, 15MM), thereby reducing the interference of the mute key magnet on the electronic compass. , however, if the distance between the electronic compass and the mute key is too large, it will make the stacking layout of the entire electronic device more difficult.

In the embodiment of the present application, the electronic device provided by the present application includes: a target button, at least one Hall sensor, and an electronic compass, so that the electronic device can obtain the current position information (the target button) of the mute button (ie, the target button) through at least one Hall sensor. The current position information is used to indicate the current key position of the mute key on the electronic device), and is based on According to the current position information, the calibration parameters are determined through the electronic compass, so that the electronic device can calibrate the magnetic field parameters output by the electronic compass according to the determined calibration parameters. In this solution, because the electronic device can obtain the current position information of the mute key that may interfere with the electronic compass's detection of the geomagnetic field, and calibrate the magnetic field parameters output by the electronic compass based on the calibration parameters determined by the current position information, that is, the determined calibration parameters It is related to the current position information, so the magnetic field of the mute key can be prevented from interfering with the geomagnetic field detected by the electronic compass, thereby avoiding deviation in the direction of the geomagnetic field detected by the electronic compass. In this way, the accuracy of the electronic compass can be improved.

An embodiment of the present application provides an electronic compass calibration method. FIG. 1 shows a flow chart of an electronic compass calibration method provided by an embodiment of the present application. As shown in Figure 1, the electronic compass calibration method provided by the embodiment of the present application may include the following steps 201 to 203.

Step 201: The electronic device obtains the target position information of the target button through at least one Hall sensor.

In this embodiment of the present application, the above target position information is used to indicate the key position of the target key on the electronic device.

Optionally, in this embodiment of the present application, a magnetic component may be provided in the above target button.

The target button may be any of the following: a mute button, a volume button, a button corresponding to a preset position in the electronic device, or any button that is less than a preset distance (for example, 2CM) from the electronic compass. The above-mentioned magnetic components may include at least one of the following: magnets, electromagnets, etc.

Optionally, in this embodiment of the present application, the above target position information may specifically be the coordinate information of the target button in a preset coordinate system in the electronic device.

Optionally, in this embodiment of the present application, when the electronic device is powered on, the electronic device can obtain the target location information of the target key. The power-on state may include any of the following: a power-on state, a standby state (such as a screen-off standby state), a working state (such as a screen-on state), and so on.

In one example, when the electronic device runs a navigation application, the electronic device can obtain the target location information of the target key in real time.

In another example, when the electronic device receives the user's first input to the target key, the electronic device may obtain the target location information of the target key in real time. Wherein, the first input is used to move the target key, so that the key position of the target key on the electronic device changes.

It can be understood that if the key position of the target button on the electronic device changes, it can be considered that the magnetic field near the target button may change. Therefore, the electronic device can obtain the target position information in real time.

Further optionally, in the embodiment of the present application, the above-mentioned first input may be any of the following: press input (such as click input), toggle input, sliding input, or preset trajectory input, etc. The details can be determined according to actual usage requirements, and are not limited by the embodiments of this application.

Optionally, in the embodiment of the present application, the electronic device may also be provided with at least one Hall sensor, and the at least one Hall sensor The two Hall sensors are arranged in a position within the preset range of the target button, so that the at least one Hall sensor can respectively output corresponding Hall parameters to output at least one Hall parameter, and then the electronic device can output the corresponding Hall parameters according to the at least one Hall sensor. parameter to determine the target location information of the target button.

Step 202: The electronic device determines the target calibration parameters through the electronic compass based on the target location information.

In the embodiment of the present application, the above target calibration parameters are used to calibrate the magnetic field parameters output by the electronic compass of the electronic device.

Optionally, in this embodiment of the present application, the above-mentioned target calibration parameters may include at least one of the following: angle relationship parameters, magnetic field distribution parameters, magnetic field direction parameters or acceleration parameters.

Optionally, in the embodiment of the present application, multiple preset calibration parameters (such as at least two preset calibration parameters in the following embodiments) are pre-stored in the electronic device, and the multiple preset calibration parameters are one by one. Corresponding to multiple position information, the electronic device can determine the target calibration parameters corresponding to the target position information.

Further optionally, in this embodiment of the present application, the electronic device can determine a piece of position information that matches the target position information from a plurality of position information, and determine a preset calibration parameter corresponding to the piece of position information as the target. Calibration parameters.

It should be noted that the above "matching the target location information" can be understood as: being the same as the target location information; or the difference from the target location information is less than or equal to the preset threshold.

Step 203: The electronic device uses the target calibration parameters to calibrate the magnetic field parameters output by the electronic compass.

Optionally, in this embodiment of the present application, the above-mentioned magnetic field parameters may include magnetic field direction parameters.

Optionally, in this embodiment of the present application, the electronic device can use a preset calibration algorithm to perform calculations based on the target calibration parameters and the magnetic field parameters output by the electronic compass to obtain the calibrated magnetic field parameters. It can be understood that the calibrated magnetic field parameters are accurate magnetic field parameters.

In one example, when the electronic device does not calibrate the magnetic field parameters output by the electronic compass of the electronic device, the electronic device can directly use the target calibration parameters to calibrate the magnetic field parameters output by the electronic compass of the electronic device.

In another example, when the electronic device uses other calibration parameters (such as the initial calibration parameters in the following embodiments) to calibrate the magnetic field parameters output by the electronic compass of the electronic device, the electronic device can first calibrate the other calibration parameters. The parameters are updated to the target calibration parameters, and then the target calibration parameters are used to calibrate the magnetic field parameters output by the electronic compass of the electronic device.

It can be understood that after the electronic device determines the target calibration parameters, it may happen that the electronic device is using other calibration parameters to calibrate the magnetic field parameters output by the electronic compass. The other calibration parameters are not related to the target position information, so the target may appear. The magnetic field of the key interferes with the electronic compass's detection of the geomagnetic field. Therefore, the electronic device can update the other calibration parameters to the target calibration parameters.

Optionally, in the embodiment of the present application, as shown in Figure 2 in conjunction with Figure 1, before the above step 203, the present application implements The electronic compass calibration method provided by the embodiment also includes the following step 301.

Step 301: When the initial calibration parameters are used to calibrate the magnetic field parameters, the electronic device updates the initial calibration parameters to the target calibration parameters.

Further optionally, in the embodiment of the present application, the electronic compass performs magnetic field calibration processing in real time. When the position of the target button changes, the electronic device can update the initial calibration parameters to the target calibration parameters, thereby using the updated target calibration parameters. Recalibrate the magnetic field parameters output by the electronic compass to obtain the magnetic field parameters output based on the target calibration parameters. The specific process of obtaining the target calibration parameters can be referred to the above embodiments and will not be described again here.

Further optionally, in this embodiment of the present application, the electronic device may receive the user's second input to the target key to trigger a change in the position information of the target key (such as the second position described below), so that the electronic device may obtain the second The target calibration parameters corresponding to the position information are used to calibrate the magnetic field parameters output by the electronic compass through the target calibration parameters corresponding to the second position information.

Further optionally, in this embodiment of the present application, the above-mentioned second input may be any of the following: click input, toggle input, sliding input or preset trajectory input. The details can be determined according to actual usage requirements, and are not limited by the embodiments of the present invention.

In the embodiment of the present application, the electronic device can update the stored initial calibration parameters to the target calibration parameters related to the target position information, thereby calibrating the magnetic field parameters output by the electronic compass through the target calibration parameters. In this way, the performance of the electronic compass is improved. Accuracy.

Optionally, in this embodiment of the present application, after calibrating the magnetic field parameters output by the electronic compass, the electronic device can perform the above steps 201 to 203 again to calibrate the magnetic field parameters output by the electronic compass again.

In one example, the electronic device may perform the above steps 201 to 203 again after a preset period of time after calibrating the magnetic field parameters output by the electronic compass. It can be understood that the electronic device can calibrate the magnetic field parameters output by the electronic compass again every once in a while.

In another example, the electronic device may perform the above-mentioned steps 201 to 203 again according to the user's input to the electronic device. It can be understood that the electronic device can also calibrate the magnetic field parameters output by the electronic compass again according to the user's needs.

In the embodiment of the present application, a magnet is provided in the target button, so that when the button position of the target button on the electronic device changes, the magnetic field near the target button may change, causing the magnetic field output by the electronic compass to change. The parameters are inaccurate. Therefore, the electronic device can obtain the target position information of the target button, and determine the target calibration parameters based on the target position information, so as to use the target calibration parameters to calibrate the magnetic field parameters output by the electronic compass of the electronic device. Obtain accurate magnetic field parameters.

Embodiments of the present application provide an electronic compass calibration method. The electronic device can obtain the target position information of the target key (the target position information is used to indicate the key position of the target key on the electronic device), and according to the target The position information determines the target calibration parameters, so that the electronic device can calibrate the magnetic field parameters output by the electronic compass according to the target calibration parameters. In this solution, because the electronic device can obtain the target position information of the target button that may interfere with the electronic compass's detection of the geomagnetic field, and calibrate the magnetic field parameters output by the electronic compass based on the target calibration parameters determined by the target position information, that is, the target calibration parameters It is related to the target position information, so the magnetic field of the target button can be prevented from interfering with the geomagnetic field detected by the electronic compass, thereby avoiding deviation in the direction of the geomagnetic field detected by the electronic compass. In this way, the accuracy of the electronic compass can be improved.

Moreover, since the electronic device can calibrate the magnetic field parameters output by the electronic compass according to the target calibration parameters determined by the target position information, the electronic compass and the target buttons can be arranged in adjacent areas, thus reducing the overall cost of the electronic device. The stacking difficulty of the machine.

The following will take two Hall sensors installed in an electronic device as an example to illustrate how the electronic device obtains target position information.

Optionally, in this embodiment of the present application, as shown in FIG. 3 in conjunction with FIG. 1 , the above-mentioned electronic device further includes a first Hall sensor and a second Hall sensor. The above step 201 can be specifically implemented through the following steps 201a and 201b.

Step 201a: The electronic device obtains the first Hall parameter detected by the first Hall sensor and the second Hall parameter detected by the second Hall sensor.

Optionally, in the embodiment of the present application, the first Hall sensor and the second Hall sensor may be linear Hall sensors (such as open-loop Hall sensors or closed-loop Hall sensors), or switch-type Hall sensors. .

It should be noted that the first Hall sensor and the second Hall sensor have opposite polarities, and both the first Hall sensor and the second Hall sensor are perpendicular to the button magnet.

Optionally, in the embodiment of the present application, the first Hall parameter and the second Hall parameter may both be Hall voltage values.

There is a Hall voltage in both the first Hall sensor and the second Hall sensor. The stronger the magnetic field, the higher the voltage. On the contrary, the weaker the magnetic field, the lower the voltage. Therefore, the first Hall sensor can detect the target button according to the According to the magnetic field size of the magnet, a Hall voltage value (i.e., the first Hall parameter) is obtained, and the second Hall sensor can obtain another Hall voltage value (i.e., the third Hall parameter) based on the detected magnetic field size of the magnet of the target button. (two Hall parameters), so that the electronic device can determine the acquired target position information of the target button according to the first Hall parameter and the second Hall parameter.

It can be understood that when the magnet in the target button moves (for example, up and down, or left and right), the moving position of the magnet is limited and fixed by the structure of the target button. When the button magnet moves up and down, the magnetic field generated by the magnet is also Change up and down, so that when the size, shape, and brand of the magnet are determined, the surface magnetism and magnetic field range of the magnet can also be determined accordingly. Therefore, the electronic device can determine the target of the target button through the first Hall parameter and the second Hall parameter. location information. The same applies to moving left and right, so I won’t go into details here.

Step 201b: The electronic device determines the target position information based on the first Hall parameter and the second Hall parameter.

Optionally, in the embodiment of the present application, the electronic device can determine whether the first Hall parameter is greater than (or less than) the first preset voltage value, and whether the second Hall parameter is less than (or greater than) the second preset voltage value. , determine the target location information.

For example, assuming that the magnet in the target button is close to the first Hall sensor (that is, the target button is in the first position, and the first position is the upper half area of the target button), at this time, the magnet detected by the first Hall sensor The magnetic field of the magnet is larger, and the magnetic field of the magnet detected by the second Hall sensor is smaller, so the Hall voltage value (i.e., the first Hall parameter) obtained by the first Hall sensor is larger, and the second Hall sensor obtains The Hall voltage value (i.e., the second Hall parameter) is small. Therefore, when the first Hall parameter is greater than the first preset voltage value, and the second Hall parameter is less than the second preset voltage value, the electronic The device may determine the first location information as the target location information. The first position information is used to indicate that the key position of the target key on the electronic device is the first position.

For example, as shown in Figure 4, the magnet in the target button is close to the first Hall sensor 13, the magnetic field of the magnet detected by the first Hall sensor 14 is relatively large, and the magnetic field of the magnet detected by the second Hall sensor 13 is is smaller, in this case, when the first Hall parameter is greater than the first preset voltage value and the second Hall parameter is less than the second preset voltage value, the electronic device can determine the first position information as the target position information.

As another example, assume that the magnet in the target button is close to the second Hall sensor (that is, the target button is in the second position, and the second position is the lower half of the target button). At this time, the first Hall sensor detects The magnetic field of the magnet is small, and the magnetic field of the magnet detected by the second Hall sensor is large, so the Hall voltage value (i.e., the first Hall parameter) obtained by the first Hall sensor is small, and the second Hall sensor The obtained Hall voltage value (i.e., the second Hall parameter) is larger. Therefore, when the first Hall parameter is smaller than the first preset voltage value and the second Hall parameter is larger than the second preset voltage value, The electronic device may determine the second location information as the target location information. The second position information is used to indicate that the key position of the target key on the electronic device is the second position.

In the embodiment of the present application, since the electronic device can be provided with two Hall sensors, the electronic device can directly determine the target position information based on the two Hall parameters detected by the two Hall sensors. Therefore, the electronic device can be improved. The accuracy with which the device determines target location information.

Of course, in order to further reduce the interference of the magnetic field of the magnet in the target button on the geomagnetic field detected by the electronic compass, a magnetic isolation component can be provided on the target button.

The following is an example of how electronic equipment determines target calibration parameters.

Optionally, in this embodiment of the present application, as shown in FIG. 5 in conjunction with FIG. 1 , the above step 202 can be specifically implemented through the following step 202a.

Step 202a: The electronic device determines the target calibration parameter corresponding to the target position information from at least two preset calibration parameters prestored in the electronic compass.

In the embodiment of the present application, the above-mentioned at least two preset calibration parameters correspond to at least two pieces of position information in a one-to-one manner, and the at least two pieces of position information include target position information.

Further optionally, in the embodiment of the present application, for each of the at least two preset calibration parameters, the target button can be moved to a button position first, and the magnetic field parameters and accurate magnetic field output by the electronic compass are obtained. Deviation value between parameters, and then determine a preset calibration parameter based on the deviation value to obtain one preset calibration parameter, so that at least two preset calibration parameters can be obtained. The above-mentioned accurate magnetic field parameters may be magnetic field parameters detected using other equipment (such as a compass).

It can be understood that in the whole machine, the electronic compass is in a complex magnetic field environment. In order to measure the geomagnetic field more accurately, at least two preset calibration parameters can be predetermined according to the different key positions of the target keys, so that the electronic device can be based on the target keys. button position to determine the corresponding preset calibration parameters.

Further optionally, in the embodiment of the present application, at least two hard magnetic databases are preset in the electronic compass, and each hard magnetic database stores a preset calibration parameter, so that the electronic device can calculate the calibration parameters according to at least two corresponding relationships. , determine a hard magnetic database corresponding to the target position information, and determine the preset calibration parameters in the hard magnetic database as the target calibration parameters. Each of the at least two corresponding relationships is a corresponding relationship between a position information and a hard magnetic database.

Specifically, the electronic device can determine a piece of position information that matches the target position information from at least two pieces of position information in at least two corresponding relationships, and then store the piece of position information corresponding to a preset in the hard magnetic library. Set the calibration parameters and determine them as target calibration parameters.

In the embodiment of this application, the electronic device can adjust the magnetic field parameters output by the electronic compass through the target calibration parameter corresponding to the target button position, thereby avoiding that the target button may interfere with the electronic compass detection when the target button is close to the electronic compass. The geomagnetism causes the direction of the geomagnetic field detected by the electronic compass to deviate, thus improving the accuracy of the electronic compass.

An embodiment of the present application provides an electronic device. Figure 6 shows a possible structural diagram of an electronic device provided by an embodiment of the present application. As shown in Figure 6, the electronic device may include: PCB 11, target button 12, at least one Hall sensor and electronic compass 15 , the at least one Hall sensor includes a first Hall sensor 13 and a second Hall sensor 14 .

Among them, the PCB is provided with: a first Hall sensor 13 and a second Hall sensor 14, the first Hall sensor 13 and the second Hall sensor 14 are arranged opposite to the target button 12; an electronic compass 15, the electronic compass 15 15 is arranged at one end of PCB 11 away from the target button 12 .

In the embodiment of the present application, the above-mentioned at least one Hall sensor is used to obtain the target position information of the target key, and the target position information is used to indicate the key position of the target key on the electronic device; the above-mentioned electronic compass is used to obtain the target position information according to the target position information. , determine the target calibration parameters, so that the electronic device can use the target calibration parameters to calibrate the magnetic field parameters output by the electronic compass.

Embodiments of the present application provide an electronic device that can obtain a target button through at least one Hall sensor. The target position information of the key (the target position information is used to indicate the key position of the target key on the electronic device), and based on the target position information, the target calibration parameters are determined through the electronic compass, so that the electronic device can calibrate the parameters according to the target Calibrate the magnetic field parameters output by the electronic compass. In this solution, because the electronic device can obtain the target position information of the target button that may interfere with the electronic compass's detection of the geomagnetic field, and calibrate the magnetic field parameters output by the electronic compass based on the target calibration parameters determined by the target position information, that is, the target calibration parameters It is related to the target position information, so the magnetic field of the target button can be prevented from interfering with the geomagnetic field detected by the electronic compass, thereby avoiding deviation in the direction of the geomagnetic field detected by the electronic compass. In this way, the accuracy of the electronic compass can be improved.

Optionally, in the embodiment of the present application, as shown in Figure 7 in conjunction with Figure 6, the key positions of the target key 12 include: a first key position 121 and a second key position 122; the at least one Hall sensor 13 includes: The first Hall sensor 13 and the second Hall sensor 14 .

The first button position 121 faces the first Hall sensor 13 , and the second button position 122 faces the second Hall sensor 14 .

Specifically, the first Hall sensor 13 and the second Hall sensor 14 are both located on the same plane and are perpendicular to the target button 12 . The electronic compass 15 is located above the first Hall sensor 131 and is in contact with the first Hall sensor 131 . The distance between 13 is less than 15MM.

In the embodiment of the present application, the electronic device can be provided with two Hall sensors, so that the electronic device can directly determine the key position of the target key based on the two Hall sensors. Therefore, the electronic device can improve the accuracy of determining the key position of the target key. accuracy.

Optionally, in the embodiment of the present application, as shown in FIG. 8 in conjunction with FIG. 6 , the above-mentioned electronic device further includes a magnetic isolation component 15 .

Optionally, in the embodiment of the present application, the above-mentioned magnetic isolation component 16 can be disposed on the PCB 11 , and the magnetic isolation component 16 can be any of the following: a magnetic isolation sheet, a silicon steel sheet, or any component with magnetic isolation capabilities.

It can be understood that the above-mentioned magnetic isolation sheet is a soft magnetic material sintered at a constant high temperature, and has high magnetic permeability and low magnetic loss factor. It uses the electron scattering caused by the thermal movement of the functional component lattice electric field and the interaction between electrons to absorb electromagnetic wave energy and convert it into thermal energy, thereby achieving the purpose of attenuating electromagnetic waves.

In the embodiment of the present application, the target button, the first Hall sensor and the second Hall sensor are all arranged in the space formed by the magnetic isolation component 16 .

It should be noted that the above-mentioned FIG. 8 is a top view of the electronic device.

Further optionally, in the embodiment of the present application, the space formed by the magnetic isolation component 16 may specifically be: the space enclosed by the magnetic isolation component 16 and the PCB 11 , or the space enclosed by the magnetic isolation component 16 .

Specifically, the magnetic isolation component 16 may be provided with a groove, and the notch of the groove is connected to the PCB (for example, fixedly connected), so that the target button, the first Hall sensor, and the second Hall sensor are all disposed on the PCB. It is located in the groove so as to be disposed in the space formed by the magnetic isolation component 16 .

For example, as shown in Figure 9, the magnetic isolation component 16 may be provided with a groove, and the notch of the groove is fixedly connected to the PCB 11, so that the target button 12, the first Hall sensor 13 and the second Hall sensor 14 are They are all arranged at the position where PCB11 is located in the groove.

It can be understood that when the electronic equipment is stacked, a separate magnetic isolation space is left above the target button, the first Hall sensor and the second Hall sensor, so that the magnetic field generated by the magnet in the target button will be determined in the isolation space. Within the magnetic space, there will be no radiation to the outside world. Therefore, the electronic compass will no longer be affected by the magnetic field of the target button when detecting geomagnetism.

In the embodiment of the present application, a magnetic isolation component is provided on the target button, the first Hall sensor, and the second Hall sensor, so that the magnetic isolation component guides the magnetic field generated by the magnet of the target button and does not radiate outward. Therefore, It can prevent the magnetic field of the target button from interfering with the geomagnetic field detected by the electronic compass, thereby avoiding deviation in the direction of the geomagnetic field detected by the electronic compass. In this way, the accuracy of the electronic compass can be improved.

It should be noted that the execution subject of the electronic compass calibration method provided by the embodiment of the present application may be an electronic device. In the embodiment of the present application, an electronic device performing an electronic compass calibration method is used as an example to illustrate the electronic device provided by the embodiment of the present application.

Figure 10 shows a possible structural schematic diagram of the electronic compass calibration device involved in the embodiment of the present application. As shown in FIG. 10 , the electronic compass calibration device includes: a target button, at least one Hall sensor, and an electronic compass. The electronic compass calibration device 70 may include: an acquisition module 71 , a determination module 72 , and a calibration module 73 .

Among them, the acquisition module 71 is used to acquire the target position information of the target button of the electronic compass calibration device through at least one Hall sensor. The target position information is used to indicate the button position of the target button on the electronic compass calibration device 70 . The determination module 72 is configured to determine the target calibration parameters through the electronic compass according to the target position information obtained by the acquisition module 71 . The calibration module 73 is used to calibrate the magnetic field parameters output by the electronic compass using the target calibration parameters determined by the determination module 72 .

In a possible implementation, the above-mentioned determination module 72 is specifically configured to determine the target calibration parameters corresponding to the target position information from at least two preset calibration parameters prestored in the electronic compass; wherein the at least two preset calibration parameters are It is assumed that the calibration parameter corresponds to at least two pieces of position information one-to-one, and the at least two pieces of position information include target position information.

In a possible implementation, the electronic compass calibration device provided by the embodiment of the present application further includes an update module. Update module, used to update the initial calibration parameters to the target calibration before the calibration module 73 uses the target calibration parameters to calibrate the magnetic field parameters output by the electronic compass, and when the calibration module 73 uses the initial calibration parameters to calibrate the magnetic field parameters. parameter.

In a possible implementation, the electronic compass calibration device further includes a first Hall sensor and a second Hall sensor. The above-mentioned acquisition module 71 is specifically used to acquire the first Hall parameter detected by the first Hall sensor and the second Hall parameter detected by the second Hall sensor; and according to the first Hall parameter and the second Hall parameter , determine the target location information.

Embodiments of the present application provide an electronic compass calibration device. The electronic compass calibration device can obtain target position information of a target button that may interfere with the electronic compass's detection of the geomagnetic field, and output the electronic compass based on the target calibration parameters determined by the target position information. Calibrate the magnetic field parameters, that is, the target calibration parameters are related to the target position information, so it can avoid the magnetic field of the target button from interfering with the geomagnetic field detected by the electronic compass, thereby avoiding the deviation of the geomagnetic field direction detected by the electronic compass. In this way, it can Improve the accuracy of electronic compass.

The electronic compass calibration device in the embodiment of the present application may be a device, or may be a component, integrated circuit, or chip in an electronic device. The device may be a mobile electronic device or a non-mobile electronic device. For example, the mobile electronic device can be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a vehicle-mounted electronic device, a mobile Internet device (MID), or an augmented reality (AR)/virtual reality (VR). VR) equipment, robots, wearable devices, ultra-mobile personal computers (UMPC), netbooks or personal digital assistants (PDA), etc., and can also be servers, network attached storage (Network Attached Storage) , NAS), personal computer (personal computer, PC), television (television, TV), teller machine or self-service machine, etc., the embodiments of this application are not specifically limited.

The electronic compass calibration device in the embodiment of the present application may be a device with an operating system. The operating system can be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiments of this application.

The electronic compass calibration device provided by the embodiment of the present application can implement various processes implemented by the method embodiments of Figures 1 to 8. To avoid duplication, they will not be described again here.

Optionally, as shown in Figure 11, this embodiment of the present application also provides an electronic device 90, including a processor 91 and a memory 92. The memory 92 stores programs or instructions that can be run on the processor 91. When the program or instruction is executed by the processor 91, each step of the above electronic compass calibration method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, the details will not be described here.

It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

Figure 12 is a schematic diagram of the hardware structure of an electronic device that implements an embodiment of the present application.

The electronic device 100 includes but is not limited to: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, etc. part.

Those skilled in the art can understand that the electronic device 100 may also include a power supply (such as a battery) that supplies power to various components. The power supply may be logically connected to the processor 110 through a power management system, thereby managing charging, discharging, and function through the power management system. Consumption management and other functions. The structure of the electronic device shown in Figure 12 does not constitute a limitation of the electronic device. The electronic device may include more or fewer components than shown in the figure, or some components may be combined, or different components may be used. The layout of the components will not be described in detail here.

Among them, the processor 110 is used to obtain the target position information of the target key of the electronic device through at least one Hall sensor. The target position information is used to indicate the key position of the target key on the electronic device; and according to the target position information , determine the target calibration parameters through the electronic compass; and use the target calibration parameters to calibrate the magnetic field parameters output by the electronic compass.

Embodiments of the present application provide an electronic device, because the electronic device can obtain target position information of a target button that may interfere with the electronic compass's detection of the geomagnetic field, and perform calibration on the magnetic field parameters output by the electronic compass based on the target calibration parameters determined by the target position information. Calibration, that is, the target calibration parameters are related to the target position information, so it can avoid the magnetic field of the target button from interfering with the geomagnetic field detected by the electronic compass, thus avoiding the deviation of the geomagnetic field direction detected by the electronic compass. In this way, the accuracy of the electronic compass can be improved. Accuracy.

Optionally, in this embodiment of the present application, the processor 110 is specifically configured to determine the target calibration parameters corresponding to the target position information from at least two preset calibration parameters prestored in the electronic compass; wherein the at least two preset calibration parameters are It is assumed that the calibration parameter corresponds to at least two pieces of position information one-to-one, and the at least two pieces of position information include target position information.

Optionally, in this embodiment of the present application, the processor 110 is also configured to, before using the target calibration parameters to calibrate the magnetic field parameters output by the electronic compass, when using the initial calibration parameters to calibrate the magnetic field parameters, set the initial The calibration parameters are updated to the target calibration parameters.

Optionally, in this embodiment of the present application, the above-mentioned electronic device further includes a first Hall sensor and a second Hall sensor. The processor 110 is specifically configured to obtain the first Hall parameter detected by the first Hall sensor and the second Hall parameter detected by the second Hall sensor; and based on the first Hall parameter and the second Hall parameter, Determine target location information.

The electronic device provided by the embodiments of the present application can implement each process implemented by the above method embodiments, and can achieve the same technical effect. To avoid duplication, the details will not be described here.

For specific beneficial effects of various implementation methods in this embodiment, please refer to the corresponding implementations in the above method embodiments. The beneficial effects of this method will not be repeated here to avoid repetition.

It should be understood that in the embodiment of the present application, the input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042. The graphics processor 1041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras). The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 107 includes a touch panel 1071 and at least one of other input devices 1072 . Touch panel 1071 is also called a touch screen. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.

Memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc. Additionally, memory 109 may include volatile memory or nonvolatile memory, or memory 109 may include both volatile and nonvolatile memory. Among them, non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM). Memory 109 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 110 may include one or more processing units; optionally, the processor 110 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 110 .

Embodiments of the present application also provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the program or instructions are executed by a processor, each process of the above method embodiments is implemented and the same technology can be achieved. The effect will not be described here in order to avoid repetition.

Wherein, the processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or CD etc.

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement various processes of the above method embodiments. , and can achieve the same technical effect, so to avoid repetition, they will not be described again here.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-a-chip or system-on-chip, etc.

Embodiments of the present application provide a computer program product. The program product is stored in a storage medium. The program product is executed by at least one processor to implement each process of the above electronic compass calibration method embodiment, and can achieve the same technology. The effect will not be described here in order to avoid repetition.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims

An electronic compass calibration method, applied to electronic equipment, the electronic equipment includes a target button, at least one Hall sensor and an electronic compass, the method includes:

Obtain the target position information of the target button through the at least one Hall sensor, and the target position information is used to indicate the button position of the target button on the electronic device;

Determine target calibration parameters through the electronic compass according to the target position information;

The target calibration parameters are used to calibrate the magnetic field parameters output by the electronic compass.
The method according to claim 1, wherein determining target calibration parameters through the electronic compass according to the target location information includes:

Determine the target calibration parameter corresponding to the target position information from at least two preset calibration parameters prestored in the electronic compass;

Wherein, the at least two preset calibration parameters correspond to at least two pieces of position information in a one-to-one manner, and the at least two pieces of position information include the target position information.
The method according to claim 1, wherein before calibrating the magnetic field parameters output by the electronic compass using the target calibration parameters, the method further includes:

When the magnetic field parameters are calibrated using initial calibration parameters, the initial calibration parameters are updated to the target calibration parameters.
The method of claim 1, wherein the at least one Hall sensor includes a first Hall sensor and a second Hall sensor;

Obtaining the target position information of the target button through the at least one Hall sensor includes:

Obtaining the first Hall parameter detected by the first Hall sensor and the second Hall parameter detected by the second Hall sensor;

The target position information is determined according to the first Hall parameter and the second Hall parameter.
An electronic compass calibration device, the electronic compass calibration device includes: a target button, at least one Hall sensor and an electronic compass, the electronic compass calibration device also includes: an acquisition module, a determination module and a calibration module;

The acquisition module is configured to acquire the target position information of the target button through the at least one Hall sensor. The target position information is used to indicate the button where the target button is located on the electronic compass calibration device. Location;

The determination module is configured to determine target calibration parameters through the electronic compass according to the target position information obtained by the acquisition module;

The calibration module is configured to use the target calibration parameters determined by the determination module to calibrate the electronic compass. The magnetic field parameters output by the disk are calibrated.
The device according to claim 5, wherein the determination module is specifically configured to determine the target calibration parameter corresponding to the target position information from at least two preset calibration parameters prestored in the electronic compass. ; Wherein, the at least two preset calibration parameters correspond to at least two pieces of position information, and the at least two pieces of position information include the target position information.
The device according to claim 5, wherein the electronic compass calibration device further includes an update module;

The update module is configured to calibrate the magnetic field parameters output by the electronic compass using the target calibration parameters before the calibration module uses the initial calibration parameters to calibrate the magnetic field parameters, The initial calibration parameters are updated to the target calibration parameters.
The device of claim 5, wherein the at least one Hall sensor includes a first Hall sensor and a second Hall sensor;

The acquisition module is specifically used to acquire the first Hall parameter detected by the first Hall sensor and the second Hall parameter detected by the second Hall sensor;

The determination module is specifically configured to determine the target position information according to the first Hall parameter and the second Hall parameter.
An electronic device, characterized in that the printed circuit board (PCB) of the electronic device is provided with:

target button;

At least one Hall sensor, the at least one Hall sensor is arranged opposite to the target button, the at least one Hall sensor is used to obtain the target position information of the target button, the target position information is used to indicate the The key position of the target key on the electronic device;

An electronic compass, the electronic compass is provided at one end of the PCB away from the target button;

Wherein, the electronic compass is used to determine target calibration parameters according to the target position information, so that the electronic device can use the target calibration parameters to calibrate the magnetic field parameters output by the electronic compass.
The electronic device according to claim 9, wherein the key position of the target key includes: a first key position and a second key position; and the at least one Hall sensor includes: a first Hall sensor and a second Hall sensor;

Wherein, the first button position faces the first Hall sensor, and the second button position faces the second Hall sensor.
The electronic device according to claim 9, characterized in that the PCB of the electronic device is further provided with:

Magnetic isolation component, the magnetic isolation component and the PCB form a magnetic isolation space;

Wherein, the target button and the at least one Hall sensor are both arranged in the magnetic isolation space.
An electronic device, including a processor, a memory and a program or instructions stored on the memory and executable on the processor. When the program or instructions are executed by the processor, the implementation of claims 1 to 4 is achieved. The steps of the electronic compass calibration method described in any one of the above.
A readable storage medium on which a program or instructions are stored. When the program or instructions are executed by a processor, the steps of the electronic compass calibration method according to any one of claims 1 to 4 are implemented.
A computer program product, which is executed by at least one processor to implement the electronic compass calibration method according to any one of claims 1 to 4.
An electronic device, including the UE configured to perform the electronic compass calibration method according to any one of claims 1 to 4.