CN116847273A

CN116847273A - Object searching method and system and electronic equipment

Info

Publication number: CN116847273A
Application number: CN202210298395.2A
Authority: CN
Inventors: 蓝元皓; 龙星宇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2023-10-03
Also published as: WO2023179751A9; WO2023179751A1; WO2023179751A8

Abstract

An object searching method, an object searching system and electronic equipment. The method is applied to a system comprising a first device and a second device, the first device being a master device and the second device being a sought device. The method comprises the following steps: the first device is connected with the second device; the first device sends a direction measurement indication to the second device; the second device determining a first angle for indicating a direction of the first device in a second coordinate system of the second device; the second device sends the first angle to the first device; the first device obtains a second angle according to the first angle, and the second angle is used for indicating the direction of the second device in a first coordinate system of the first device. In this way, the sought device can complete a direction measurement, and the host device (i.e., the seeking device) calculates the direction in which the sought device is located, thereby helping the user select the sought device. In this way, the master device may not need to make directional measurements, e.g., the master device may not need to have a multi-antenna design.

Description

Object searching method and system and electronic equipment

Technical Field

The present application relates to the field of electronic technologies, and in particular, to a method and a system for searching an object, and an electronic device.

Background

In recent years, personal handheld electronic devices (such as mobile phones, watches, tablets, notebooks, etc.) are more and more, and users often carry the electronic devices on duty, traveling, business trip, etc., and are easy to lose. In addition, taking a mobile phone as an example, a user often forgets where the mobile phone is located in the process of working or drying home, and when the user needs to use the mobile phone, the user can find the mobile phone in the whole room, so that the experience is poor.

Disclosure of Invention

The application aims to provide an object searching method, an object searching system and electronic equipment, which are used for searching a lost object.

In a first aspect, there is provided an object finding method applied to a system including a first device and a second device, the first device being a master device and the second device being a sought device, the method comprising: the first device is connected with the second device; the first equipment sends a direction measurement instruction to the second equipment, wherein the direction measurement instruction is used for instructing the second equipment to measure the direction of the first equipment; the second device determining a first angle for indicating a direction in a second coordinate system of the second device when the first device is in a first position; the second device sends the first angle to the first device; and the first equipment obtains a second angle according to the first angle, wherein the second angle is used for indicating the direction of the second equipment in a first coordinate system of the first equipment when the first equipment is positioned at the first position.

In the embodiment of the application, the searched device (i.e. the lost device) can determine a first angle of the main device in the coordinate system (i.e. the second coordinate system) of the searched device, and provide the first angle to the main device, so that the main device calculates a second angle of the searched device in the coordinate system (i.e. the first coordinate system) of the main device based on the first angle. Therefore, the solution of the present application only needs to have a directional positioning function for the sought device, for example, the sought device has a multi-antenna design to determine the first angle of the main device in the coordinate system of the sought device (i.e. the second coordinate system) by using the bluetooth AOA positioning technology, while the main device may not need to have a directional positioning function, for example, does not need a multi-antenna design, does not need to use the bluetooth AOA positioning technology, and may also determine the direction in which the sought device is located (i.e. the second angle) relative to the main device based on the first angle determined by the sought device.

In one possible design, the method further comprises: the first device displays the second angle. In this way, the user can see the direction of the second device relative to the first device on the first device, so that the user can conveniently find the second device, and the user experience is good.

In one possible design, the method further comprises: after the position of the first device is changed from the first position to the second position, the second device determines a third angle, wherein the third angle is used for indicating the direction in a second coordinate system of the second device when the first device is positioned at the second position; the second device sends the third angle to the first device; and the first equipment obtains a fourth angle according to the third angle, wherein the fourth angle is used for indicating the direction of the second equipment in the first coordinate system of the first equipment when the first equipment is positioned at the second position. It will be appreciated that the position of the first device changes, and the orientation of the first device in the second coordinate system of the second device changes, and the second device may determine different angles in the second coordinate system before and after the change in position of the first device, and provide the different angles to the first device, so that the first device determines the change in the orientation of the second device relative to the first device during the change in position of the first device. Thus, even if the position of the first device changes, the user can accurately find the second device.

In one possible design, the method further comprises: the first device displays the fourth angle. That is, when the position of the first device changes, the direction in which the second device displayed on the first device is located correspondingly changes, for example, from the second angle to the fourth angle. Therefore, the user can find the second equipment according to the direction of the second equipment displayed by the first equipment, and when the position of the first equipment changes, the indicated direction of the second equipment also changes, so that the user can accurately find the second equipment.

In one possible design, the first device obtains a second angle according to the first angle, including: the first device converts the first angle from the second coordinate system to a third coordinate system to obtain a fifth angle, wherein the third coordinate system is an absolute coordinate system; the first device converts the fifth angle from the third coordinate system into the first coordinate system to obtain the second angle. It should be noted that, the coordinate systems corresponding to the first angle and the second angle are different, the first angle is an angle in the second coordinate system, and the second angle is an angle in the first coordinate system, so in the application, the first angle can be converted from the second coordinate system to the third coordinate system, and then the third coordinate system is converted to the first coordinate system to obtain the second angle, so that the direction of the second device in the first coordinate system of the first device can be determined.

In one possible design, before the first device obtains the second angle according to the first angle, the method further includes: the second device determining a sixth angle for indicating a direction in the second coordinate system when the first device is in the second position; the second device sends the sixth angle to the first device; the first device obtains a second angle according to the first angle, and the second device comprises: the first device calculates the second angle according to the first angle and the sixth angle. That is, the first device moves from the first position to the second position, the second device performs two angle measurements or direction measurements to obtain the first angle and the sixth angle, and the first device may obtain the second angle according to the first angle and the second angle. In this way, the accuracy of the direction detection result can be improved.

In one possible design, before the second device determines the sixth angle, the method further includes: the second device sends prompt information to the first device, wherein the prompt information is used for prompting the first device to move. That is, when the first device is at the first position, the second device performs an angle measurement once, and then the second device can prompt the first device to change the position, when the first device changes to the second position, the second device performs an angle measurement once again, and the direction in which the second device is located is determined through multiple angle measurement results, so that the accuracy of the direction detection result can be improved.

In one possible design, the hint information includes a movement direction indication that includes a right in front of the first device, or, a first direction; the first direction is an angle obtained by converting the first angle from the second coordinate system to a third coordinate system and then converting the third coordinate system to the first coordinate system. That is, the direction indication displayed on the first device may be an arrow, for example, and the user may move with the first device to change the position under the indication of the arrow, so that the user operation experience is better.

In one possible design, the method further comprises: the second device determining a first distance, the first distance being a distance from the second device when the first device is located at the first location; the second device sends the first distance to the first device; the second device determining a second distance, the second distance being a distance from the second device when the first device is located at the second location; the second device sends the second distance to the first device; the first device calculates the second angle according to the first angle and the sixth angle, and the second angle comprises: the first device calculates the second angle according to the first angle, the sixth angle, the first distance, the second distance and the trigonometric function relation. That is, the second device makes one angular measurement, one distance measurement while the first device is in the first position. When the first equipment is changed to the second position, the second equipment performs angle measurement and distance measurement once again, and the direction of the second equipment is determined through the angle measurement results and the distance measurement results, so that the accuracy of the direction detection result can be improved.

In one possible design, the method further comprises: the second device determining a first signal strength, the first signal strength being a signal strength generated when the first device is located at the first location; the second device sends the first signal strength to the first device; the second device determining a second signal strength, the second signal strength being a signal strength generated when the first device is located at the second location;

the second device sends the second signal strength to the first device; the first device calculates the second angle according to the first angle and the sixth angle, and the second angle comprises: the first device calculates the second angle according to the first angle, the sixth angle, the first signal intensity and the second signal intensity. That is, the second device makes one angular measurement, one signal strength measurement, while the first device is in the first position. When the first equipment is changed to the second position, the second equipment performs angle measurement and signal intensity measurement once again, and the direction of the second equipment is determined through the angle measurement results and the signal intensity measurement results, so that the accuracy of the direction detection result can be improved.

In one possible design, the calculating, by the first device, the second angle according to the first angle, the sixth angle, the first signal strength, and the second signal strength includes: the first device determines that the second device is located on a first side of the first device according to the first angle and the sixth angle, wherein the first side comprises a left side, a right side, an upper side or a lower side; the first device determines a second angle in a quadrant of the first coordinate system corresponding to the first side based on the first signal strength and the second signal strength. That is, the first device may determine which side (e.g., up, down, left, right, etc.) of the first device the second device is on based on the first angle and the sixth angle, and then determine the second angle in the quadrant corresponding to the side, improving accuracy of the determined second angle.

In a second aspect, there is also provided an object finding method applied to a first device, the method comprising: the first device is connected with the second device; the first device is a master device and the second device is a sought device; the first equipment sends a direction measurement instruction to the second equipment, wherein the direction measurement instruction is used for instructing the second equipment to measure the direction of the first equipment; the first device receives a first angle sent by the second device, wherein the first angle is used for indicating a direction in a second coordinate system of the second device when the first device is at a first position; and the first equipment obtains a second angle according to the first angle, wherein the second angle is used for indicating the direction of the second equipment in a first coordinate system of the first equipment when the first equipment is positioned at the first position.

In one possible design, the method further comprises: the first device displays the second angle.

In one possible design, the method further comprises: after the position of the first device is changed from the first position to the second position, receiving a third angle sent by the second device, wherein the third angle is used for indicating the direction in a second coordinate system of the second device when the first device is positioned at the second position; and the first equipment obtains a fourth angle according to the third angle, wherein the fourth angle is used for indicating the direction of the second equipment in the first coordinate system of the first equipment when the first equipment is positioned at the second position.

In one possible design, the method further comprises: the first device displays the fourth angle.

In one possible design, the first device obtains a second angle according to the first angle, including: the first device converts the first angle from the second coordinate system to a third coordinate system to obtain a fifth angle, wherein the third coordinate system is an absolute coordinate system; the first device converts the fifth angle from the third coordinate system into the first coordinate system to obtain the second angle.

In one possible design, before the first device calculates the second angle according to the first angle, the method further includes: the first device receives a sixth angle sent by the second device, wherein the sixth angle is used for indicating the direction in the second coordinate system when the first device is at the second position; the first device obtains a second angle according to the first angle, and the second device comprises: the first device calculates the second angle according to the first angle and the sixth angle.

In one possible design, the method further comprises: the first device displays prompt information, and the prompt information is used for prompting the first device to move.

In one possible design, the hint information includes a movement direction indication that includes a right in front of the first device, or, a first direction; the first angle in the first direction is converted from the second coordinate system to a third coordinate system, and then the third coordinate system is converted to the angle obtained in the first coordinate system.

In one possible design, the method further comprises: the first device receives a first distance sent by the second device, wherein the first distance is the distance between the first device and the second device when the first device is located at the first position; the first device receives a second distance sent by the second device, wherein the second distance is the distance between the first device and the second device when the first device is located at the second position; the first device calculates the second angle according to the first angle and the sixth angle, and the second angle comprises: the first device calculates the second angle based on the first angle, the sixth angle, the first distance, and the second distance.

In one possible design, the method further comprises: the first device receives a first signal strength sent by the second device, wherein the first signal strength is generated when the first device is located at the first position; the first device receives a second signal strength sent by the second device, wherein the second signal strength is generated when the first device is located at the second position; the first device calculates the second angle according to the first angle and the sixth angle, and the second angle comprises: the first device calculates the second angle according to the first angle, the sixth angle, the first signal intensity and the second signal intensity.

In one possible design, the calculating, by the first device, the second angle according to the first angle, the sixth angle, the first signal strength, and the second signal strength includes: the first device determines that the second device is located on a first side of the first device according to the first angle and the sixth angle, wherein the first side comprises a left side, a right side, an upper side or a lower side; the first device determines a second angle in a quadrant of the first coordinate system corresponding to the first side based on the first signal strength and the second signal strength.

In a third aspect, there is also provided an object finding method applied to a second device, the method comprising: the second device is connected with the first device; the first device is a master device and the second device is a sought device; the second equipment receives a direction measurement instruction sent by the first equipment, wherein the direction measurement instruction is used for indicating the second equipment to measure the direction of the first equipment; the second device determining a first angle for indicating a direction in a second coordinate system of the second device when the first device is in a first position; the second device sends the first angle to the first device, so that the first device obtains a second angle according to the first angle, and the second angle is used for indicating the direction of the second device in a first coordinate system of the first device when the first device is in the first position.

In one possible design, the method further comprises: after the position of the first device is changed from the first position to the second position, the second device determines a third angle, wherein the third angle is used for indicating the direction in a second coordinate system of the second device when the first device is positioned at the second position; the second device sends the third angle to the first device, so that the first device obtains a fourth angle according to the third angle, and the fourth angle is used for indicating the direction of the second device in the first coordinate system of the first device when the first device is located at the second position.

In one possible design, the method further comprises: the second device determining a sixth angle for indicating a direction in the second coordinate system when the first device is in the second position; and the second device sends the sixth angle to the first device so that the first device calculates the second angle according to the first angle and the sixth angle.

In one possible design, before the second device determines the sixth angle, the method further includes: the second device sends prompt information to the first device, wherein the prompt information is used for prompting the first device to move.

In one possible design, the method further comprises: the second device sends a first distance to the first device, wherein the first distance is the distance between the first device and the second device when the first device is located at the first position; the second device sends a second distance to the first device, the second distance being a distance between the first device and the second device when the first device is located at the second location; such that the first device calculates the second angle based on the first angle, the sixth angle, the first distance, and the second distance.

In one possible design, the method further comprises: the second device sends a first signal strength to the first device, the first signal strength being a signal strength generated when the first device is located at the first location; the second device sends a second signal strength to the first device, the second signal strength being a signal strength generated when the first device is located at the second location; and the first equipment calculates the second angle according to the first angle, the sixth angle, the first signal intensity and the second signal intensity.

In a fourth aspect, there is also provided a communication system comprising: a first device and a second device; the first device is configured to perform the steps of the first device in the method according to the first aspect; the second device is configured to perform the steps of the second device in the method as described in the first aspect above.

In a fifth aspect, there is also provided an electronic device, including: a processor, a memory, and one or more programs;

wherein the one or more programs are stored in the memory, the one or more programs comprising instructions, which when executed by the processor, cause the electronic device to perform the method steps of the second aspect described above.

In a sixth aspect, there is also provided an electronic device comprising a processor, a memory, and one or more programs; wherein the one or more programs are stored in the memory, the one or more programs comprising instructions, which when executed by the processor, cause the electronic device to perform the method steps of the third aspect described above.

In a seventh aspect, there is also provided a computer readable storage medium for storing a computer program which, when run on a computer, causes the computer to perform the method as described in the second aspect above.

In an eighth aspect, there is also provided a computer readable storage medium for storing a computer program which, when run on a computer, causes the computer to perform the method as described in the third aspect above.

In a ninth aspect, there is also provided a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method as described in the second aspect above.

In a tenth aspect, there is also provided a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method as described in the third aspect above.

In an eleventh aspect, an embodiment of the present application further provides a chip, where the chip is coupled to a memory in an electronic device, and is configured to invoke a computer program stored in the memory and execute the technical solution of the second aspect, where "coupled" in the embodiment of the present application means that two components are directly or indirectly combined with each other.

In a twelfth aspect, an embodiment of the present application further provides a chip, where the chip is coupled to a memory in an electronic device, and is configured to invoke a computer program stored in the memory and execute the technical solution of the third aspect, where "coupled" in the embodiment of the present application means that two components are directly or indirectly combined with each other.

The advantages of the second aspect to the twelfth aspect are described above, please refer to the advantages of the first aspect, and the description is not repeated.

Drawings

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 2A is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application;

FIG. 2B is a schematic diagram of a software structure of an electronic device according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an object searching method according to an embodiment of the present application;

FIG. 4 is a schematic diagram of an object searching method according to an embodiment of the present application;

FIG. 5 is a schematic diagram of an AOA calculation method according to an embodiment of the present application;

fig. 6 is a schematic diagram of an application scenario provided in an embodiment of the present application;

FIG. 7 is a flowchart of an object searching method according to an embodiment of the present application;

FIG. 8 is a schematic diagram of misalignment of a first device and a second device coordinate system according to an embodiment of the present application;

FIG. 9 is a schematic diagram of an object finding process according to an embodiment of the present application;

FIG. 10 is a schematic diagram of an object finding process according to an embodiment of the present application;

FIG. 11 is a schematic diagram of a second device according to an embodiment of the present application;

FIG. 12 is another schematic diagram of an object finding process according to an embodiment of the present application;

FIG. 13 is a schematic diagram of an object finding process according to an embodiment of the present application;

FIG. 14 is a flowchart of another object searching method according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

In the following, some terms in the embodiments of the present application are explained for easy understanding by those skilled in the art.

At least one of the embodiments of the present application includes one or more; wherein, a plurality refers to greater than or equal to two. In addition, it should be understood that in the description herein, the words "first," "second," and the like are used solely for the purpose of distinguishing between the descriptions and not necessarily for the purpose of indicating or implying a relative importance or order. For example, the first operation and the second operation do not represent the importance of both or the order of both, only for distinguishing the descriptions. In the embodiment of the present application, "and/or" merely describes the association relationship, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the specification. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

The embodiment of the application provides a method for searching an object, which can be applied to a communication system. The communication system includes a first device and a second device. The first device is a master device. The second device is the sought device or the lost device. The user may find the second device through the first device.

The first device may be a portable electronic device such as a mobile phone, a tablet computer, a notebook computer, or the like; or, the device can also be a wearing device such as a watch, a bracelet and the like; or intelligent home equipment such as intelligent screens, refrigerators and the like; or may also be an on-board device, etc., or may also be a Virtual Reality (VR) device, an augmented Reality (Augmented Reality, AR) device, a Mixed Reality (MR) device, etc., and in any case, the embodiments of the present application are not limited to the specific type of the first device.

The second device may be a portable electronic device such as a mobile phone, a tablet computer, a notebook computer, or the like; or, the device can also be a wearing device such as a watch, a bracelet and the like; or intelligent home equipment such as intelligent screens, refrigerators and the like; or may also be an in-vehicle device, etc., or may also be a Virtual Reality (VR) device, an augmented Reality (Augmented Reality, AR) device, a Mixed Reality (MR) device, etc., and in any case, the embodiments of the present application are not limited to a specific type of the second device.

The first device and the second device may be the same type of device or different types of devices, for example, the first device is a watch and the second device is a cell phone.

For example, please refer to fig. 1, which is a schematic diagram of a communication system according to an embodiment of the present application. As shown in fig. 1, the communication system includes a first device and a second device. The first device is exemplified by a watch, and the second device is exemplified by a mobile phone. When the mobile phone is lost, the user can search for the mobile phone through the watch.

The apparatus to which the present application relates is described below.

Fig. 2A is a schematic structural diagram of an electronic device according to the present application. The electronic device may be a first device and/or a second device. As shown in fig. 2A, the electronic device may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, keys 190, a motor 191, an indicator 192, a camera 193, a display 194, a user identification module (subscriber identification module, SIM) card interface 195, and the like. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

The processor 110 may include one or more processing units, such as: the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a memory, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors. The controller can be a neural center and a command center of the electronic device. The controller can generate operation control signals according to the instruction operation codes and the time sequence signals to finish the control of instruction fetching and instruction execution. A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby improving the efficiency of the system.

The USB interface 130 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 130 may be used to connect a charger to charge an electronic device, or may be used to transfer data between the electronic device and a peripheral device. The charge management module 140 is configured to receive a charge input from a charger. The power management module 141 is used for connecting the battery 142, and the charge management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140 and provides power to the processor 110, the internal memory 121, the external memory, the display 194, the camera 193, the wireless communication module 160, and the like.

The wireless communication function of the electronic device may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like. The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the electronic device may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution for wireless communication including 2G/3G/4G/5G, etc. applied on an electronic device. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc. The mobile communication module 150 may receive electromagnetic waves from the antenna 1, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 150 can amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna 1 to radiate. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be provided in the same device as at least some of the modules of the processor 110.

The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), etc. for application on an electronic device. The wireless communication module 160 may be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2.

In some embodiments, the antenna 1 and the mobile communication module 150 of the electronic device are coupled, and the antenna 2 and the wireless communication module 160 are coupled, so that the electronic device can communicate with the network and other devices through wireless communication technology. The wireless communication techniques may include the Global System for Mobile communications (global system for mobile communications, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM, and/or IR techniques, among others. The GNSS may include a global satellite positioning system (global positioning system, GPS), a global navigation satellite system (global navigation satellite system, GLONASS), a beidou satellite navigation system (beidou navigation satellite system, BDS), a quasi zenith satellite system (quasi-zenith satellite system, QZSS) and/or a satellite based augmentation system (satellite based augmentation systems, SBAS).

The display 194 is used to display a display interface of an application or the like. The display 194 includes a display panel. The display panel may employ a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED) or an active-matrix organic light-emitting diode (matrix organic light emitting diode), a flexible light-emitting diode (flex), a mini, a Micro led, a Micro-OLED, a quantum dot light-emitting diode (quantum dot light emitting diodes, QLED), or the like. In some embodiments, the electronic device may include 1 or N display screens 194, N being a positive integer greater than 1.

The camera 193 is used to capture still images or video. The camera 193 may include a front camera and a rear camera.

The internal memory 121 may be used to store computer executable program code including instructions. The processor 110 executes various functional applications of the electronic device and data processing by executing instructions stored in the internal memory 121. The internal memory 121 may include a storage program area and a storage data area. The storage program area may store an operating system, and software code of at least one application program (e.g., an aiqi application, a WeChat application, etc.), etc. The storage data area may store data (e.g., images, video, etc.) generated during use of the electronic device, and so forth. In addition, the internal memory 121 may include a high-speed random access memory, and may further include a nonvolatile memory such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (universal flash storage, UFS), and the like.

The external memory interface 120 may be used to connect an external memory card, such as a Micro SD card, to enable expansion of the memory capabilities of the electronic device. The external memory card communicates with the processor 110 through an external memory interface 120 to implement data storage functions. For example, files such as pictures and videos are stored in an external memory card.

The electronic device may implement audio functions through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, an application processor, and the like. Such as music playing, recording, etc.

The pressure sensor 180A is used to sense a pressure signal, and may convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A may be disposed on the display screen 194. The gyro sensor 180B may be used to determine a motion gesture of the electronic device. In some embodiments, the angular velocity of the electronic device about three axes (i.e., x, y, and z axes) may be determined by the gyro sensor 180B.

The gyro sensor 180B may be used for photographing anti-shake. The air pressure sensor 180C is used to measure air pressure. In some embodiments, the electronics calculate altitude from barometric pressure values measured by barometric pressure sensor 180C, aiding in positioning and navigation. The magnetic sensor 180D includes a hall sensor. The electronic device may detect the opening and closing of the flip holster using the magnetic sensor 180D. In some embodiments, when the electronic device is a flip machine, the electronic device may detect the opening and closing of the flip according to the magnetic sensor 180D. And then according to the detected opening and closing state of the leather sheath or the opening and closing state of the flip, the characteristics of automatic unlocking of the flip and the like are set. The acceleration sensor 180E may detect the magnitude of acceleration of the electronic device in various directions (typically three axes). The magnitude and direction of gravity can be detected when the electronic device is stationary. The electronic equipment gesture recognition method can also be used for recognizing the gesture of the electronic equipment, and is applied to horizontal and vertical screen switching, pedometers and other applications.

A distance sensor 180F for measuring a distance. The electronic device may measure the distance by infrared or laser. In some embodiments, the scene is photographed and the electronic device can range using the distance sensor 180F to achieve quick focus. The proximity light sensor 180G may include, for example, a Light Emitting Diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The electronic device emits infrared light outwards through the light emitting diode. The electronic device uses a photodiode to detect infrared reflected light from nearby objects. When sufficient reflected light is detected, it may be determined that an object is in the vicinity of the electronic device. When insufficient reflected light is detected, the electronic device may determine that there is no object in the vicinity of the electronic device. The electronic device may detect that the user holds the electronic device near the ear to talk using the proximity light sensor 180G, so as to automatically extinguish the screen for power saving purposes. The proximity light sensor 180G may also be used in holster mode, pocket mode to automatically unlock and lock the screen.

The ambient light sensor 180L is used to sense ambient light level. The electronic device can adaptively adjust the brightness of the display 194 based on the perceived ambient light level. The ambient light sensor 180L may also be used to automatically adjust white balance when taking a photograph. Ambient light sensor 180L may also cooperate with proximity light sensor 180G to detect if the electronic device is in a pocket to prevent false touches. The fingerprint sensor 180H is used to collect a fingerprint. The electronic equipment can utilize the collected fingerprint characteristics to realize fingerprint unlocking, access the application lock, fingerprint photographing, fingerprint incoming call answering and the like.

The temperature sensor 180J is for detecting temperature. In some embodiments, the electronic device performs a temperature processing strategy using the temperature detected by temperature sensor 180J. For example, when the temperature reported by temperature sensor 180J exceeds a threshold, the electronics perform a reduction in performance of a processor located near temperature sensor 180J in order to reduce power consumption to implement thermal protection. In other embodiments, when the temperature is below another threshold, the electronic device heats the battery 142 to avoid low temperatures causing the electronic device to shut down abnormally. In other embodiments, the electronic device performs boosting of the output voltage of the battery 142 when the temperature is below a further threshold to avoid abnormal shutdown caused by low temperatures.

The touch sensor 180K, also referred to as a "touch panel". The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, which is also called a "touch screen". The touch sensor 180K is for detecting a touch operation acting thereon or thereabout. The touch sensor may communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to touch operations may be provided through the display 194. In other embodiments, the touch sensor 180K may also be disposed on the surface of the electronic device at a different location than the display 194.

The bone conduction sensor 180M may acquire a vibration signal. In some embodiments, bone conduction sensor 180M may acquire a vibration signal of a human vocal tract vibrating bone pieces. The bone conduction sensor 180M may also contact the pulse of the human body to receive the blood pressure pulsation signal.

The keys 190 include a power-on key, a volume key, etc. The keys 190 may be mechanical keys. Or may be a touch key. The electronic device may receive key inputs, generating key signal inputs related to user settings and function controls of the electronic device. The motor 191 may generate a vibration cue. The motor 191 may be used for incoming call vibration alerting as well as for touch vibration feedback. For example, touch operations acting on different applications (e.g., photographing, audio playing, etc.) may correspond to different vibration feedback effects. The indicator 192 may be an indicator light, may be used to indicate a state of charge, a change in charge, a message indicating a missed call, a notification, etc. The SIM card interface 195 is used to connect a SIM card. The SIM card may be inserted into the SIM card interface 195, or removed from the SIM card interface 195 to enable contact and separation with the electronic device.

It will be appreciated that the components shown in fig. 2A do not constitute a particular limitation of the electronic device. The electronic device in embodiments of the invention may include more or fewer components than in fig. 2A. In addition, the combination/connection relationship between the components in fig. 2A is also adjustable and modifiable.

Fig. 2B is a block diagram of a software structure of an electronic device according to an embodiment of the present application. The electronic device may be a first device or a second device. As shown in fig. 2B, the software structure of the electronic device may be a hierarchical architecture, for example, the software may be divided into several layers, each layer having a distinct role and division of labor. The layers communicate with each other through a software interface. In some embodiments, the Android system is divided into four layers, from top to bottom, an application layer, an application framework layer (FWK), an Zhuoyun row (Android run) and system libraries, and a kernel layer, respectively.

The application layer may include a series of application packages. As shown in fig. 2B, the application layer may include cameras, settings, skin modules, user Interfaces (UIs), three-way applications, and the like. The three-party application program can comprise WeChat, QQ, gallery, calendar, call, map, navigation, WLAN, bluetooth, music, video, short message, etc. The application framework layer provides an application programming interface (application programming interface, API) and programming framework for application programs of the application layer. The application framework layer may include some predefined functions. As shown in FIG. 2B, the application framework layer may include a window manager, a content provider, a view system, a telephony manager, a resource manager, a notification manager, and the like. The window manager is used for managing window programs. The window manager can acquire the size of the display screen, judge whether a status bar exists, lock the screen, intercept the screen and the like. The content provider is used to store and retrieve data and make such data accessible to applications. The data may include video, images, audio, calls made and received, browsing history and bookmarks, phonebooks, etc. The view system includes visual controls, such as controls to display text, controls to display pictures, and the like. The view system may be used to build applications. The display interface may be composed of one or more views. For example, a display interface including a text message notification icon may include a view displaying text and a view displaying a picture. The telephony manager is for providing communication functions of the electronic device. Such as the management of call status (including on, hung-up, etc.). The resource manager provides various resources for the application program, such as localization strings, icons, pictures, layout files, video files, and the like. The notification manager allows the application to display notification information in a status bar, can be used to communicate notification type messages, can automatically disappear after a short dwell, and does not require user interaction. Such as notification manager is used to inform that the download is complete, message alerts, etc. The notification manager may also be a notification in the form of a chart or scroll bar text that appears on the system top status bar, such as a notification of a background running application, or a notification that appears on the screen in the form of a dialog window. For example, a text message is prompted in a status bar, a prompt tone is emitted, the electronic device vibrates, and an indicator light blinks, etc. Android runtimes include core libraries and virtual machines. Android run time is responsible for scheduling and management of the Android system. The core library consists of two parts: one part is a function which needs to be called by java language, and the other part is a core library of android. The application layer and the application framework layer run in a virtual machine. The virtual machine executes java files of the application program layer and the application program framework layer as binary files. The virtual machine is used for executing the functions of object life cycle management, stack management, thread management, security and exception management, garbage collection and the like. The system library may include a plurality of functional modules. For example: surface manager (surface manager), media library (media library), three-dimensional graphics processing library (e.g., openGL ES), 2D graphics engine (e.g., SGL), etc. The surface manager is used to manage the display subsystem and provides a fusion of 2D and 3D layers for multiple applications. Media libraries support a variety of commonly used audio, video format playback and recording, still image files, and the like. The media library may support a variety of audio and video encoding formats, such as MPEG4, h.264, MP3, AAC, AMR, JPG, PNG, etc. The three-dimensional graphic processing library is used for realizing three-dimensional graphic drawing, image rendering, synthesis, layer processing and the like. The 2D graphics engine is a drawing engine for 2D drawing. The kernel layer is a layer between hardware and software. The inner core layer at least comprises a display driver, a camera driver, an audio driver and a sensor driver. The hardware layer may include various sensors such as acceleration sensors, gyro sensors, touch sensors, etc. as referred to in embodiments of the present application.

The technical scheme of the application is described in detail below with reference to the accompanying drawings.

For ease of understanding, the communication system shown in fig. 1 will be further described as an example in which the first device is a wristwatch and the second device is a mobile phone, and when the user loses the mobile phone, the user retrieves the mobile phone through the wristwatch.

One implementation is that a watch has a look-up function or application by which a cell phone can be found. For example, as shown in fig. 3, when the watch detects that the user starts the hunting function, a hunting command is sent to the mobile phone. After receiving the seeking command, the mobile phone generates sound, such as playing a bell. The user can determine the position of the mobile phone to find the mobile phone through sound. This approach is suitable for finding handsets in relatively quiet environments. If the environment is noisy or the mobile phone is covered by other objects, the user cannot hear the sound made by the mobile phone, and the mobile phone cannot be found. Moreover, the mobile phone cannot be accurately positioned by voice alone, and still needs to be manually found, so that the finding mode is not accurate enough.

In order to accurately find a mobile phone, the embodiment of the application provides an object finding method. The method is applicable to a system such as that shown in fig. 1. The first device (i.e., the wristwatch) may acquire the direction in which the second device (i.e., the cell phone) is located and display the direction on the display of the first device. Through the direction, the user can quickly find out the second device (namely the mobile phone).

For example, please refer to fig. 4, which is a scene showing diagram provided in an embodiment of the present application. Assuming that the second device (i.e., the handset) is located to the right of the first device (i.e., the watch), the first device obtains the direction in which the second device is located and displays the direction, e.g., an arrow to the right. In this way, the user can know that the object to be found (i.e. the second device) is to the right of the first device and thus to the right.

In the above description, the first device needs to acquire the direction in which the second device is located. The first device obtains the direction of the second device in a plurality of ways, including but not limited to at least one of the following first and second ways.

In one mode, the first device calculates a direction in which the second device is located.

For example, the first device may determine the direction in which the second device is located using a positioning technique or the like. The positioning technology comprises at least one of GPS (global positioning system) positioning technology, bluetooth positioning technology, wi-Fi positioning technology, ultra Wide Band (UWB) positioning technology, ultrasonic positioning technology and infrared positioning technology. Taking bluetooth positioning technology as an example, the first device may measure the direction in which the second device is located by detecting an Angle of Arrival (AoA). AOA positioning technology is a multi-antenna based positioning technology. In other words, if the first device has a multi-antenna design, the bluetooth AOA positioning technology may be used to obtain the direction in which the second device is located.

For example, referring to fig. 5, taking the example that the first device has two antennas (i.e. antenna 1 and antenna 2), the process of determining, by the AOA positioning technology, the direction in which the second device is located is described.

As in fig. 5, it is assumed that the wavelength of the wireless signal emitted by the second device is λ. The antenna signal emitted by the second device is received by the antenna 1 and the antenna 2. Since the positions of the antenna 1 and the antenna 2 are different, there is a phase difference in the received wireless signals. Assuming that the phase of the signal received by the antenna 1 is phi (Rx 1), the phase of the signal received by the antenna 2 is phi (Rx 2), it can be seen from the triangular relationship of fig. 5 that the phase differences phi (Rx 1) -phi (Rx 2) between the antenna 1 and the antenna 2 satisfy the following formula:

φ(Rx1)–(Rx2)＝2πd·cos(θ)/λ

then θ=cos ^-1 (λ(φ(Rx1)–φ(Rx2)/2πd)

And θ is an AoA angle, that is, a direction in which the second device is located. Therefore, the first device obtains the direction of the second device through the calculation mode.

And in a second mode, the second equipment calculates the direction of the first equipment, then the direction of the first equipment is sent to the first equipment, and the first equipment determines the direction of the second equipment according to the direction.

It should be noted that, the direction in which the first device is located refers to a direction in which the first device is located from the perspective of the second device; the direction in which the first device is located may be described by an angle at which the first device is located in the coordinate system of the second device, for example. The direction in which the second device is located refers to the direction in which the second device is located from the perspective of the first device; the direction in which the second device is located may be described by an angle in the coordinate system of the first device, for example.

For convenience of description, the coordinate system of the second device will be referred to as a second coordinate system, and the coordinate system of the first device will be referred to as a first coordinate system.

For example, referring to FIG. 6, a second coordinate system O2-x2y2 is established on the second device and a first coordinate system O1-x1y1 is established on the first device. The second device calculates the direction in which the first device is located as θ'. The second device calculates the direction θ' of the first device in various manners, such as GPS positioning technology, bluetooth positioning technology, wi-Fi positioning technology, UWB positioning technology, ultrasonic positioning technology, infrared positioning technology, etc. If the second device obtains the direction θ' in which the first device is located by using the bluetooth AOA positioning technology, the implementation principle is shown in fig. 5, and the description is not repeated here. After the second device obtains θ ', θ ' may be sent to the first device, which obtains the direction of the second device in the first coordinate system O1-x1y1, i.e., θ, based on θ '. As in fig. 6, assuming that the first and second coordinate systems are aligned, e.g., the y1 and y2 axes are oriented identically, and the x1 and x2 axes are oriented identically, θ=θ'. Thus, an arrow to the lower right is displayed on the first device, indicating that the second device is to the lower right of the first device.

Therefore, the difference between the second mode and the first mode is that in the first mode, the first device can directly calculate the direction of the second device, and the second device can not participate in the calculation process, so in the first mode, the first device (i.e. the main device) needs to have the bluetooth-ready AOA positioning function, i.e. needs to have a multi-antenna design, so that the direction of the second device can be calculated. In the second mode, the direction of the first device is calculated by the second device, and the direction is sent to the first device so that the first device can calculate the direction of the second device based on the direction. Therefore, in the second mode, the second device (i.e. the sought device) needs to have the bluetooth AOA positioning function, i.e. the second device may not have the multi-antenna design, and the first device may not have the bluetooth AOA positioning function, i.e. the first device may not have the multi-antenna design.

It should be understood that one of the first or second modes may be used in different application scenarios. For example, the application scenario one is that the main device is a mobile phone, and the searched device is a watch, and since the mobile phone has a multi-antenna design, the searched device can be searched in a mode one. For another example, the second application scenario is that the main device is a watch, and the searched device is a mobile phone, and the watch does not have a multi-antenna design due to the convenient and small design of the watch, so the second searching mode can be used for searching.

The following mainly takes the second application scenario as an example.

For example, please refer to fig. 7, which is a schematic flow chart of an object searching method according to an embodiment of the present application. As shown in fig. 7, the process includes:

s701, the first device establishes a connection with the second device.

Wherein the first device is the master device and the second device is the sought device, i.e. the lost device.

By way of example, there are various ways in which the first device may be connected to the second device, such as a bluetooth connection, a wireless connection, etc., and embodiments of the present application are not limited.

S702, the first device sends a direction measurement instruction to the second device, and the direction measurement instruction is used for instructing the second device to measure the direction of the first device.

Since the first device does not have a function of direction calculation (e.g., does not have a multi-antenna design), the first device issues a direction measurement instruction to the second device to instruct the second device to perform direction calculation.

In some embodiments, before S702, the method may further include the steps of: the first equipment judges whether the direction of the second equipment can be calculated by the first equipment or not, if so, the direction measurement instruction is not required to be sent to the second equipment, the direction of the second equipment can be calculated by the first equipment, and if not, the direction measurement instruction is sent to the second equipment.

In other embodiments, before S702, the method may further include the steps of: and receiving a user operation, and responding to the user operation, and sending a direction measurement instruction to the second equipment. The user operation may be an operation on the first device display, such as displaying a key on the first device display that when triggered sends a direction measurement indication to the second device. That is, under the triggering of the user, the first device sends a direction measurement instruction to the second device, instructing the second device to perform the direction calculation.

S703, the second device calculates a first angle, where the first angle is used to describe the direction of the first device in the second coordinate system of the second device.

Illustratively, the second device may calculate the first angle based on the bluetooth AOA algorithm, where the first angle is calculated by the second device and the first device is oriented in a second coordinate system of the second device, e.g., the first angle is θ' in fig. 6.

S704, the second device transmits the first angle to the first device.

S705, the first device calculates a second angle based on the first angle, where the second angle is used to describe a direction of the second device in the first coordinate system of the first device.

The first angle is an angle of the first device in a second coordinate system of the second device, and the second angle is an angle of the second device in the first coordinate system of the first device. Since the first angle and the second angle are in different coordinate systems, the problem of mismatch of the coordinate systems needs to be solved, i.e. the first angle needs to be converted from the second coordinate system to the first coordinate system to obtain the second angle.

Illustratively, taking fig. 6 as an example, the coordinate system of the first device is a first coordinate system, and the coordinate system of the second device is a second coordinate system. The first angle (i.e., θ') calculated by the second device is the same as the second angle (θ) when the first coordinate system is aligned with the second coordinate system. The first coordinate system and the second coordinate system are aligned, and it is understood that the x1 axis of the first coordinate system and the x2 axis of the second coordinate system have the same direction, and/or the y1 axis of the first coordinate system and the y2 axis of the second coordinate system have the same direction.

It will be appreciated that fig. 6 is an example of the first and second coordinate systems being aligned, and that in most cases the first and second coordinate systems are not aligned. For example, referring to fig. 8, in the case that the first coordinate system is not aligned with the second coordinate system, the first angle calculated by the second device is θ ', if the first angle is equal to the second angle, that is, θ=θ', the second angle is inaccurate, the direction in which the second device is located cannot be accurately indicated, and the second device cannot be accurately found, so in this case, correction needs to be performed on the first angle to obtain the second angle.

In some embodiments, prior to S705, further comprising; the first device determines whether the second coordinate system is aligned with the first coordinate system, and if so, the first device calculates a second angle based on the first angle in S705, including: the second angle is equal to the first angle, and if not aligned, the first device uses the first angle and the angle correction to obtain the second angle. The angle correction method will be described later.

S705 may be performed by the first device, the second device, or the first device and the second device in cooperation. For example, the first modification scheme hereinafter is completed by the first device and the second device cooperatively.

S706, the first device displays the second angle.

Taking fig. 6 as an example, the first device displays the second angle such that the user can find the second device based on the indication of the second angle.

In the embodiment shown in fig. 7, in the case where the first coordinate system is not aligned with the second coordinate system, the first device obtains the second angle using the first angle and the angle correction means, as mentioned in S705. Two modifications are presented below.

First modification scheme

Because the first angle obtained by the second device is located in the second coordinate system of the second device and needs to be converted into the first coordinate system located in the first device, in the first modification scheme, the first angle is converted from the second coordinate system into the absolute coordinate system to obtain the third angle, and then the third angle is converted from the absolute coordinate system into the first coordinate system to obtain the second angle. The absolute coordinate system may be a positive north coordinate system, which may also be referred to as a geodetic coordinate system. One axis in the north-positive coordinate system points in the north-positive direction and the other axis points in the east-positive direction.

Please understand the first modification scheme in conjunction with fig. 9. The first modification includes the following steps.

And step 1, the second equipment converts the first angle from the second coordinate system into the north coordinate system to obtain a third angle. As shown in fig. 9, the first angle calculated by the second device is θ1, and θ1 is converted from the second coordinate system into the north coordinate system to obtain a third angle of θ3.

And 2, the second device sends the third angle to the first device.

And 3, the first equipment converts the third angle from the north coordinate system into the first coordinate system to obtain a second angle. With continued reference to fig. 9, θ3 in the positive north coordinate system, θ3 is converted from the positive north coordinate system into the first coordinate system, resulting in θ2, i.e., the second angle.

Second modification scheme

In the first modification, the second device calculates a second angle, and the second angle is converted from the second coordinate system to the first coordinate system to obtain the second angle. In the first modification, the second device only needs to measure the angle once, and then a second angle is obtained. In the second modification, the second device may measure the angle a plurality of times, and obtain the second angle by measuring the angle a plurality of times, unlike the first modification. For example, the second device measures once the second angle when the first device is in the first position and once again the fourth angle when the first device is in the second position, so that the second device obtains two angles, namely the second angle and the fourth angle, through which the second angle can be obtained.

The second modification includes at least one of the following modes a and B.

In the mode a, the second device obtains two angles, namely, the second angle and the fourth angle, and the first distance and the second distance can be measured, where the first distance is a distance between the first device and the second device when the first device is in the first position, and the second distance is a distance between the first device and the second device when the first device is in the second position, and the second angle can be obtained according to the second angle, the fourth angle, the first distance and the second distance.

For example, please understand mode a in conjunction with fig. 10. Specifically, embodiment a includes the following steps.

Step 1, when a first device is at a first position, sending a direction measurement instruction to a second device, and performing direction measurement and distance measurement by the second device to obtain a first angle theta ₁ And a first distance D between the first device and the second device ₁ 。

Step 2, when the first device moves to the second position, sending a direction measurement instruction to the second device again, and the second device performs direction measurement and distance measurement again to obtain a fourth angle theta ₄ And a second distance D ₂ 。

Optionally, before step 2, the method may further include the steps of: the first device outputs prompt information for prompting the first device to change positions. The hint information may include direction indication information to indicate a direction of movement of the first device. The direction indication information may be a default direction, e.g. the default direction is the right front or the right rear of the first device, etc., or the direction indication information may be the first angle θ using the first correction method ₁ And converting to an angle obtained by the first coordinate system. In some embodiments, the prompt information may be implemented in a voice playing manner or a text or image display manner, which is not limited in the embodiments of the present application. Illustratively, in fig. 10, the first device is illustrated as moving from a first position along the straight ahead to a second position.

Step 3, the second device uses the two measurements (θ ₁ ，D ₁ ，θ ₂ ，D ₂ ) And the principle of trigonometric function, calculating to obtain a second angle theta ₃ . Exemplary, as shown in FIG. 10, the second angle θ can be calculated from a trigonometric relationship ₃ 。

At the second angle theta ₃ Thereafter, the second device will take the second angle θ ₃ And sent to the first device for display as shown in fig. 10.

In other embodiments, the measurement of the first device may also be recorded on the second device. For example, referring to fig. 11, two black dots are displayed on the second device, black dot 1 representing the measurement made by the first device in the first position and black dot 2 representing the measurement made by the first device in the second position. Wherein the direction between black point 1 and black point 2 represents the direction of movement of the first device.

In the mode B, the second device obtains two angles, namely, the second angle and the fourth angle, and may further measure a first signal strength and a second signal strength, where the first signal strength is a signal strength generated by the first device at the first position, and the second signal strength is a signal strength generated by the first device at the second position, and the second angle may be obtained according to the second angle, the fourth angle, the first signal strength and the second signal strength. Thus, unlike mode a, mode B does not require the second device to make a distance measurement, but rather the signal strength that the first device generates at a different location.

For example, please understand mode B in conjunction with fig. 12. Specifically, the mode B includes the following steps.

Step 1, when a first device is at a first position, sending a direction measurement instruction to a second device, and obtaining a first angle theta by the second device through one direction measurement and one signal strength measurement ₁ And a first signal strength RSS ₁ 。

Step 2, after the first device moves to the second position, sending a direction measurement instruction to the second device again, and the second device performs direction measurement and signal intensity measurement again to obtain a fourth angle theta ₂ And a second signal strength RSS ₂ 。

Illustratively, as shown in fig. 12, the second position may be the second position 1 or the second position 2 in the figure.

Optionally, before step 2, the method may further include the steps of: the first device outputs prompt information for prompting the first device to change positions. The prompt may include direction indication information to indicate the first deviceA direction of movement. The direction indication information may be a default direction, e.g. the default direction is the right front or the right rear of the first device, etc., or the direction indication information may be the first angle θ using the first correction method ₁ And converting to an angle obtained by the first coordinate system. In some embodiments, the prompt information may be implemented in a voice playing manner or a text or image display manner, which is not limited in the embodiments of the present application. Illustratively, in fig. 10, the first device is illustrated as moving from a first position along the straight ahead to a second position.

Step 3, the second device uses the two measurements (θ ₁ ，RSS ₁ ，θ ₂ ，RSS ₂ ) To estimate the second angle.

The second device may, for example, be oriented according to a first angle θ ₁ Fourth angle theta ₁ The second device is determined to be located on a first side of the first device, e.g., left side, right side, upper side, lower side, etc. For example, in fig. 12, due to θ ₂ >θ ₁ Then the second device is on the left side of the first device. Thus, the second angle should point to the left. The magnitude of the second angle may be determined by the signal strength, for example, assuming that the second position is second position 1 in fig. 12, RSS since second position 1 is farther than the first position ₂ <RSS ₁ Representing the first device advancing away from the second device, the second angle is greater. As another example, assuming that the second position is the second position 2 in fig. 12, RSS since the second position 2 is closer than the first position ₂ >RSS ₁ The second angle is smaller, representing the first device advancing toward a position proximate to the second device.

It should be noted that, in fig. 12, the first device is moved twice as an example, and in practical application, the first device may find the second device after moving more times. For example, referring to FIG. 13, the second device measures the angle θ when the first device is in position 1 ₁ And signal strength RSS ₁ . When the first device is at the position 2, the second device measures the angle theta ₂ And RSS ₂ . Due to theta ₂ >θ ₁ The second angle points to the left due to the RSS ₂ <RSS ₁ I.e. the first device is moved to a position remote from the second device, the second angle is larger. When the first device moves to position 3, the second device measures θ ₃ And RSS ₃ . Due to theta ₃ >θ ₂ And so, the second angle points to the left, due to the RSS ₃ <RSS ₂ The first device moves to a position closer to the second device so the second angle decreases. When the first device moves to position 4, the second device measures θ ₄ RSS (really simple syndication) ₄ . Suppose θ ₄ ＝θ ₃ And RSS ₄ >RSS ₃ It is stated that the second angle does not need to be readjusted.

Fig. 14 is a schematic flow chart of another object searching method according to an embodiment of the present application. As shown in fig. 14, the process includes:

s1401, the second device starts the first wireless module in the second device.

For example, the first wireless module may be a WIFI module or a bluetooth module in the second device for establishing a connection with other devices.

S1402, the first device starts the object searching function.

In some embodiments, the find function may be a function in an application in the first device, such as a find application or other application.

S1403, the first device starts a first wireless module in the first device.

After the first device starts the object searching function, a first wireless module in the first device can be automatically started, so that connection is established between the first wireless module and the second device; alternatively, the first wireless module may be started under manual triggering by the user.

The first wireless module in the first device is used to establish a connection with the other device.

S1404, the first device sends a connection establishment request to the second device.

The set-up connection request may be connection setup request, for example.

In S1405, the first wireless module in the second device enters a connected state.

S1406, the second device sends a connection acceptance response to the first device.

The connection acceptance response may be connection accept response, for example.

S1407, the first wireless module in the first device enters a connected state.

S1408, the first device activates a second wireless module for sending a direction measurement indication to the second device.

The first wireless module and the second wireless module may be the same module, or different modules, for example, the first wireless module and the second wireless module are both WIFI modules, or are both bluetooth modules, or the first wireless module is a WIFI module, the second wireless module is a bluetooth module, or the like.

S1409, the first device sends a direction measurement indication to the second device.

The direction measurement indication may be direction request, for example.

S1410, the second device starts the second wireless module to perform direction measurement to obtain the first angle.

S1411, the second device transmits the first angle to the first device.

For example, the second device may send a direction measurement response to the first device, the direction measurement response including the first angle therein. Wherein the direction measurement response may be direction response.

At S1412, the first device obtains a second angle based on the first angle.

S1413, the first device displays a second angle.

S1414, the first device closes the object searching function.

S1415, the first device sends a disconnection request to the second device.

The disconnection request may be disconnection request, for example.

S1416, the first wireless module in the second device is disconnected, and the second wireless module is turned off.

S1417, the first wireless module in the first device is disconnected, and the second wireless module is turned off.

Fig. 15 is a schematic structural diagram of an electronic device 1500 according to an embodiment of the present application. The electronic device 1500 may be the first device or the second device in the foregoing. As shown in fig. 15, the electronic device 1500 may include: one or more processors 1501; one or more memories 1502; a communication interface 1503, and one or more computer programs 1504, which may be connected via one or more communication buses 1505. Wherein the one or more computer programs 1504 are stored in the memory 1502 and configured to be executed by the one or more processors 1501, the one or more computer programs 1304 comprising instructions. For example, the above-described instructions may be used to perform the steps associated with the first device or the second device as in the corresponding embodiments above. The communication interface 1503 is used to enable communication between the first device or the second device and other devices, for example, the communication interface may be a transceiver.

The embodiment of the application also provides a communication system. The communication system comprises a first device and a second device. By way of example, the first device may be a cell phone, tablet, PC, watch, or the like. The second device may be a cell phone, tablet, PC, watch, etc. Wherein the structure of the first device and the second device may be seen in fig. 15. For example, when the electronic device 1500 shown in fig. 15 is a first device, the instructions of the one or more computer programs 1504, when executed by the processor, cause the first device to perform the steps of the first device (e.g., watch) as previously described. When the electronic device 1500 shown in fig. 15 is a second device, the instructions of the one or more computer programs 1504, when executed by the processor, cause the second device to perform the steps of the second device (e.g., handset) as previously described.

In the embodiments of the present application described above, the method provided by the embodiments of the present application is described in terms of an electronic device (for example, the first device or the second device) as an execution subject. In order to implement the functions in the method provided by the embodiment of the present application, the electronic device may include a hardware structure and/or a software module, where the functions are implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module. Some of the functions described above are performed in a hardware configuration, a software module, or a combination of hardware and software modules, depending on the specific application of the solution and design constraints.

As used in the above embodiments, the term "when …" or "after …" may be interpreted to mean "if …" or "after …" or "in response to determination …" or "in response to detection …" depending on the context. Similarly, the phrase "at the time of determination …" or "if detected (a stated condition or event)" may be interpreted to mean "if determined …" or "in response to determination …" or "at the time of detection (a stated condition or event)" or "in response to detection (a stated condition or event)" depending on the context. In addition, in the above-described embodiments, relational terms such as first and second are used to distinguish one entity from another entity without limiting any actual relationship or order between the entities.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present invention, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc. The schemes of the above embodiments may be used in combination without conflict.

It is noted that a portion of this patent document contains material which is subject to copyright protection. The copyright owner has reserved copyright rights, except for making copies of patent documents or recorded patent document content of the patent office.

Claims

1. An object finding method, characterized by being applied to a system including a first device and a second device, the first device being a master device and the second device being a sought device, the method comprising:

the first device is connected with the second device;

the first equipment sends a direction measurement instruction to the second equipment, wherein the direction measurement instruction is used for instructing the second equipment to measure the direction of the first equipment;

the second device determining a first angle for indicating a direction in a second coordinate system of the second device when the first device is in a first position;

the second device sends the first angle to the first device;

and the first equipment obtains a second angle according to the first angle, wherein the second angle is used for indicating the direction of the second equipment in a first coordinate system of the first equipment when the first equipment is positioned at the first position.

2. The method according to claim 1, wherein the method further comprises:

the first device displays the second angle.

3. The method according to claim 2, wherein the method further comprises:

after the position of the first device is changed from the first position to the second position, the second device determines a third angle, wherein the third angle is used for indicating the direction in a second coordinate system of the second device when the first device is positioned at the second position;

the second device sends the third angle to the first device;

and the first equipment obtains a fourth angle according to the third angle, wherein the fourth angle is used for indicating the direction of the second equipment in the first coordinate system of the first equipment when the first equipment is positioned at the second position.

4. A method according to claim 3, characterized in that the method further comprises:

the first device displays the fourth angle.

5. The method of claim 1, wherein the first device obtains a second angle from the first angle, comprising:

the first device converts the first angle from the second coordinate system to a third coordinate system to obtain a fifth angle, wherein the third coordinate system is an absolute coordinate system;

The first device converts the fifth angle from the third coordinate system into the first coordinate system to obtain the second angle.

6. The method of claim 1, wherein the first device, prior to deriving the second angle from the first angle, further comprises:

the second device determining a sixth angle for indicating a direction in the second coordinate system when the first device is in the second position;

the second device sends the sixth angle to the first device;

the first device obtains a second angle according to the first angle, and the second device comprises:

the first device calculates the second angle according to the first angle and the sixth angle.

7. The method of claim 6, wherein prior to the second device determining the sixth angle, further comprising:

the second device sends prompt information to the first device, wherein the prompt information is used for prompting the first device to move.

8. The method of claim 7, wherein the hint information includes a movement direction indication that includes a right in front of the first device, or, a first direction;

The first direction is an angle obtained by converting the first angle from the second coordinate system to a third coordinate system and then converting the third coordinate system to the first coordinate system.

9. The method of claim 6, wherein the method further comprises:

the second device determining a first distance, the first distance being a distance from the second device when the first device is located at the first location;

the second device sends the first distance to the first device;

the second device determining a second distance, the second distance being a distance from the second device when the first device is located at the second location;

the second device sends the second distance to the first device;

the first device calculates the second angle according to the first angle and the sixth angle, and the second angle comprises:

the first device calculates the second angle according to the first angle, the sixth angle, the first distance, the second distance and the trigonometric function relation.

10. The method of claim 6, wherein the method further comprises:

The second device determining a first signal strength, the first signal strength being a signal strength generated when the first device is located at the first location;

the second device sends the first signal strength to the first device;

the second device determining a second signal strength, the second signal strength being a signal strength generated when the first device is located at the second location;

the second device sends the second signal strength to the first device;

the first device calculates the second angle according to the first angle, the sixth angle, the first signal intensity and the second signal intensity.

11. The method of claim 10, wherein the first device calculating the second angle from the first angle, the sixth angle, the first signal strength, and the second signal strength comprises:

the first device determines that the second device is located on a first side of the first device according to the first angle and the sixth angle, wherein the first side comprises a left side, a right side, an upper side or a lower side;

The first device determines a second angle in a quadrant of the first coordinate system corresponding to the first side based on the first signal strength and the second signal strength.

12. An object finding method, applied to a first device, comprising:

the first device is connected with the second device; the first device is a master device and the second device is a sought device;

the first device receives a first angle sent by the second device, wherein the first angle is used for indicating a direction in a second coordinate system of the second device when the first device is at a first position;

13. The method according to claim 12, wherein the method further comprises:

the first device displays the second angle.

14. The method of claim 13, wherein the method further comprises:

after the position of the first device is changed from the first position to the second position, receiving a third angle sent by the second device, wherein the third angle is used for indicating the direction in a second coordinate system of the second device when the first device is positioned at the second position;

15. The method of claim 14, wherein the method further comprises:

the first device displays the fourth angle.

16. The method of claim 12, wherein the first device obtains a second angle from the first angle, comprising:

17. The method of claim 12, wherein the first device further comprises, prior to calculating the second angle from the first angle:

the first device receives a sixth angle sent by the second device, wherein the sixth angle is used for indicating the direction in the second coordinate system when the first device is at the second position;

18. The method of claim 17, wherein the method further comprises:

the first device displays prompt information, and the prompt information is used for prompting the first device to move.

19. The method of claim 18, wherein the hint information includes a movement direction indication that includes a right in front of the first device, or, a first direction;

the first angle in the first direction is converted from the second coordinate system to a third coordinate system, and then the third coordinate system is converted to the angle obtained in the first coordinate system.

20. The method of claim 17, wherein the method further comprises:

the first device receives a first distance sent by the second device, wherein the first distance is the distance between the first device and the second device when the first device is located at the first position;

the first device receives a second distance sent by the second device, wherein the second distance is the distance between the first device and the second device when the first device is located at the second position;

the first device calculates the second angle based on the first angle, the sixth angle, the first distance, and the second distance.

21. The method of claim 17, wherein the method further comprises:

the first device receives a first signal strength sent by the second device, wherein the first signal strength is generated when the first device is located at the first position;

the first device receives a second signal strength sent by the second device, wherein the second signal strength is generated when the first device is located at the second position;

22. The method of claim 21, wherein the first device calculating the second angle from the first angle, the sixth angle, the first signal strength, and the second signal strength comprises:

23. A communication system, comprising: a first device and a second device;

the first device for performing the steps of the first device in the method according to any one of claims 1 to 10;

the second device being arranged to perform the steps of the second device in the method according to any one of claims 1 to 10.

24. An electronic device, comprising:

a processor, a memory, and one or more programs;

wherein the one or more programs are stored in the memory, the one or more programs comprising instructions, which when executed by the processor, cause the electronic device to perform the method of any of claims 12-22.

25. A computer readable storage medium for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 12 to 22.