CN114816027A

CN114816027A - Method and related device for reducing power consumption of wearable equipment

Info

Publication number: CN114816027A
Application number: CN202110065928.8A
Authority: CN
Inventors: 李兵; 张伟; 曹雄伟; 段谦
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-07-29

Abstract

The application discloses a method for reducing power consumption of wearable equipment, and the wearable equipment can power off a main chip when detecting that the main chip needs to be in a standby state, so that the standby current of the main chip is 0 in the standby state. Meanwhile, under different application scenes, different power-off strategies are adopted for peripheral devices of the wearable equipment. Therefore, the power consumption of the wearable device can be reduced, and the user experience is improved.

Description

Method and related device for reducing power consumption of wearable equipment

Technical Field

The application relates to the technical field of terminals, in particular to a method and a related device for reducing power consumption of wearable equipment.

Background

Along with the development of terminal technology, the functions of electronic devices such as smart phones, tablet computers and wearable devices are more and more complex, for example, the wearable devices can support a plurality of hardware such as mobile network communication modules, bluetooth modules, Wi-Fi modules, motors, touch screens, microphones and speakers. However, due to the limitation of the size of the product and the characteristics of the battery, the power consumption is large, and the poor cruising ability is always the biggest pain point of the wearable device. Therefore, reducing the power consumption of the wearable device is an urgent problem to be solved.

Disclosure of Invention

The application provides a method and a related device for reducing power consumption of wearable equipment, which can reduce the power consumption of the wearable equipment and improve user experience.

In a first aspect, the present application provides a method for reducing power consumption of a wearable device, where the wearable device includes: the method comprises the following steps of: the wearable device detects that the main chip needs to be in standby; the wearable equipment executes a power-off strategy of the peripheral device according to the detected state of the peripheral device; the wearable device powers down the main chip.

According to the method provided by the first aspect, the wearable device can power down the main chip when detecting that the main chip needs to be in a standby state, and then the standby current value of the main chip in the standby state is 0. Meanwhile, under different application scenes, different power-off strategies are adopted for peripheral devices of the wearable equipment. Therefore, the problem that the wearable device main chip cannot be further optimized after the standby current value reaches the theoretical value of the SOC chip platform can be solved, the power consumption of the wearable device is reduced, and the user experience is improved.

In a possible implementation manner, the wearable device executes a power-down policy of the peripheral device according to the detected state of the peripheral device, specifically including: if the wearable equipment detects that the peripheral device is in an open state, the wearable equipment keeps supplying power to the peripheral device; if the wearable equipment detects that the peripheral device is in a closed state, the wearable equipment powers off the peripheral device.

In a possible implementation manner, the wearable device detecting that the peripheral device is in the off state specifically includes: if the peripheral device is a mobile communication module, the wearable device detects an operation of communication connection between a user and other electronic devices through a Bluetooth module, and responds to the operation, the wearable device sets the mobile communication module in a closed state; or, the wearable device receives an operation of selecting a 'do not disturb mode' by a user, and in response to the operation, the wearable device sets the mobile communication module in a closed state; or, when the wearable device is in a low-power state, the wearable device displays a popup interface, the popup interface including one or more options, the one or more options including a "mobile communication module" option; the wearable device receives an operation that a user completes selection of the mobile communication module option, and in response to the operation, the wearable device places the mobile communication module in a closed state.

In a possible implementation manner, the wearable device detecting that the peripheral device is in the off state specifically includes: if the peripheral device is a Bluetooth module, the wearable equipment receives the operation of selecting a 'do not disturb mode' by a user, and responds to the operation, and the wearable equipment sets the Bluetooth module in a closed state; or, when the wearable device is in a low-power state, the wearable device displays a pop-up interface, the pop-up interface including one or more options, the one or more options including a "bluetooth module" option; the wearable device receives the operation that the user completes the selection of the Bluetooth module option, and responds to the operation, the wearable device sets the Bluetooth module in a closed state.

In a possible implementation manner, the wearable device detecting that the peripheral device is in the off state specifically includes: if the peripheral device is a Wi-Fi module, the wearable device receives an operation that a user selects a 'do not disturb mode', and in response to the operation, the wearable device sets the Wi-Fi module in a closed state; or, when the wearable device is in a low-power state, the wearable device displays a pop-up interface, the pop-up interface including one or more options, the one or more options including a "Wi-Fi module" option; the wearable device receives an operation of selecting the Wi-Fi module option by a user, and responds to the operation, the wearable device puts the Wi-Fi module in a closed state.

In one possible implementation, before the wearable device executes the peripheral device power-down policy according to the detected state of the peripheral device, the method further includes: and the wearable equipment stores the field data of the main chip before standby power-off.

In one possible implementation, the method further includes: executing the step of executing the peripheral device power-down strategy by the wearable device according to the detected state of the peripheral device under the following conditions: the awakening recovery time of the main chip after standby power-off is longer than that of the traditional chip after standby, and the wearable device detects that the user is in a sleeping state; or the awakening recovery time of the main chip after standby power-off is smaller than or close to the awakening recovery time of the main chip after traditional standby.

In one possible implementation, the method further includes: the wearable device judges whether the peripheral device is independently mounted on the main chip, if yes, the wearable device keeps supplying power to the peripheral device when detecting that the peripheral device is in an open state, and the wearable device powers down the peripheral device when detecting that the peripheral device is in a closed state; if not, the peripheral device is controlled by the sub-chip.

In a possible implementation manner, the peripheral device is controlled by the sub-chip, and specifically includes: when the wearable device detects that the peripheral device is in an open state, the wearable device keeps power supply to the peripheral device, and when the wearable device detects that the peripheral device is in a closed state, the wearable device powers down the peripheral device; or, no matter the peripheral device is in an open state or a closed state, the wearable device always keeps supplying power to the peripheral device.

In a second aspect, the present application provides a wearable device comprising: the wearable device powers off the main chip when the wearable device detects that the main chip needs to be in a standby state; the wearable device executes a power-off strategy of the peripheral device according to the detected state of the peripheral device under the condition that the wearable device detects that the main chip needs to be in a standby state; and the sub-chip controls the peripheral devices mounted on the main chip and the sub-chip simultaneously under the condition that the wearable equipment detects that the main chip needs to be in standby.

In one possible implementation, before the wearable device executes the peripheral device power-down policy according to the detected state of the peripheral device, the wearable device is further configured to: and the wearable equipment stores the field data of the main chip before standby power-off.

In one possible implementation, the wearable device is further configured to: executing the step of executing the peripheral device power-down strategy by the wearable device according to the detected state of the peripheral device under the following conditions: the awakening recovery time of the main chip after standby power-off is longer than that of the traditional chip after standby, and the wearable device detects that the user is in a sleeping state; or the awakening recovery time of the main chip after standby power-off is smaller than or close to the awakening recovery time of the main chip after traditional standby.

In a third aspect, the present application provides a computer storage medium characterized by computer instructions that, when run on a wearable device, cause the wearable device to perform the method of any of the first aspects.

Drawings

Fig. 1 is a schematic structural diagram of a wearable device provided in the present application;

fig. 2 is a flowchart illustrating a method for reducing power consumption of a wearable device according to the present application;

FIG. 3 is a schematic diagram of a hardware circuit of a standby power-down strategy of a main chip provided in the present application;

FIG. 4 is a schematic diagram of a hardware circuit of another standby power-down strategy for a main chip provided by the present application;

fig. 5 is a schematic flowchart of another method for reducing power consumption of a wearable device provided by the present application;

fig. 6 is a schematic diagram of a standby power-down strategy of a main chip based on wake-up recovery time after standby power-down of different main chips according to the present application;

fig. 7 is a schematic flowchart of a method for waking up and recovering after a wearable device main chip is powered off in a standby mode according to the present application;

fig. 8 is a flowchart illustrating a method for powering off a wearable device main chip in standby and waking up for recovery in a partial scene (night).

Detailed Description

The technical solutions in the present application will be clearly and completely described below with reference to the accompanying drawings in the present application.

It should be understood that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

At present, the following four technologies are mainly adopted for reducing the power consumption of electronic equipment such as smart phones and wearable equipment: the system comprises a traditional standby awakening technology, a super power-saving technology, a dual-system application switching technology and a dynamic resource use adjusting technology. The four techniques described above are described in detail below:

traditional standby wake-up techniques: the standby flow is typically initiated when the system is in an idle state. For example, for a Linux system, in a standby state, a process is frozen, a peripheral device enters a low power consumption state, and a processor is suspended from running; and in the awakening state, the processor continues to run, the peripheral device is recovered to a normal state from a low power consumption state, and the process is unfrozen.

The dual operating system applies a switching technique: the dual operating system electronic device may include a large operating system and a small operating system. The large operating system has powerful functions, large kernel, complex processing and large demand on storage space resources; the small operating system has simple functions, small kernel, simple processing and small demand on storage space resources. The hardware resources occupied by the small operating system are a part of the hardware resources occupied by the large operating system, and the large operating system share some hardware resources (such as a bus, a central processing unit and the like), but one of the hardware resources is only used by one operating system at a certain time, that is, the two operating systems cannot run simultaneously, and only one operating system runs at a certain time. The large operating system may show a list of all applications (applications of the large operating system and applications of the small operating system) supported in the electronic device, and when the electronic device runs the applications of the small operating system, the electronic device is switched to the small operating system to run, and at this time, the large operating system enters a standby state by using a conventional standby wake-up technology. In addition, in an electronic device based on dual operating systems, the power consumption of the main operating system is large, the power consumption of the sub operating system is small, and under the condition that the electric quantity of the electronic device is low, a user can select to enter the sub operating system with low power consumption (namely, the user selects a super power saving mode) so as to achieve the purpose of saving power.

Dynamically adjusting resource usage techniques: the technology can dynamically change the frequency of the processor and change the working voltage according to different system loads, for example, when the system load is large, the frequency of the processor is increased, the working voltage is increased, and when the system load is small, the frequency of the processor is reduced, and the working voltage is reduced. In some electronic devices with dual operating systems, different operating systems can be switched to operate according to different system loads, for example, when the system load is large, a large operating system is operated, and when the system load is small, a small operating system is operated.

For the conventional wake-up technology, each System On Chip (SOC) platform installed in the electronic device has a certain standby current range, and when the single standby current value of the electronic device reaches a theoretical value, further optimization is difficult to perform.

For the above dual operating system application switching technique, when the electronic device runs the application of the small operating system, the large operating system enters the standby state, which can reduce a part of power consumption, but the large operating system adopts the conventional standby wake-up technique, so that the single standby current value of the large operating system cannot be further reduced after the single standby current value reaches the theoretical value. In addition, in an electronic device based on dual operating systems, under the condition that the electric quantity of the electronic device is low, after a user selects to enter an electronic operating system with low power consumption, a main operating system is powered off, but when the main operating system needs to be powered on, the power-on time is long, and the user experience is poor. Moreover, the technology achieves the purpose of saving the power consumption of the electronic device under the condition of reducing part of experience, for example, after a user selects to enter a super power saving mode, part of functions (such as bluetooth, Wi-Fi, mobile network and the like) of the electronic device cannot be used, and the user experience is poor.

For the dynamic resource use adjustment technology, the power consumption of the electronic equipment can be reduced integrally, but the single standby current value is difficult to further optimize after reaching the theoretical value.

The application provides a method for reducing power consumption of wearable equipment, and the wearable equipment can power off a main chip when detecting that the main chip needs to be in a standby state, so that the standby current value of the main chip in the standby state is 0. Meanwhile, under different application scenes, different power-off strategies are adopted for peripheral devices of the wearable equipment. Therefore, the problem that the wearable device main chip cannot be further optimized after the standby current value reaches the theoretical value of the SOC chip platform can be solved, the power consumption of the wearable device is reduced, and the user experience is improved.

The method for reducing the power consumption of the wearable device is not only suitable for the wearable device, but also suitable for mobile phones, smart homes, tablet computers, vehicle-mounted devices, handheld devices, notebook computers, ultra-mobile personal computers (UMPCs), netbooks, Personal Digital Assistants (PDAs), Virtual Reality (VR) devices, Augmented Reality (AR) devices and other terminal devices, and the method is not limited in the application.

Illustratively, the wearable device can be a general term for intelligently designing daily wearing by applying wearable technology, developing wearable devices, such as watches, glasses, clothes and the like. The wearable device is not only a hardware device, but also a device capable of realizing powerful functions through software support, data interaction and cloud interaction. The wearable smart device in generalized sense can include that the function is complete, the size is big, can not rely on smart mobile phone to realize complete or partial smart wrist-watch or smart glasses etc. of function to and only be absorbed in a certain kind of application function, need carry out sign monitoring's intelligent bracelet, intelligent ornament etc. with other equipment such as the various types that smart mobile phone cooperation was used.

For ease of understanding, the concepts related to the present application are exemplarily described below.

A System On Chip (SOC) mainly includes an Application Processor (AP), a modem, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a Central Processing Unit (CPU), a memory, a video codec, a Digital Signal Processor (DSP), a baseband processor, a neural-Network Processing Unit (NPU), and the like. Each SOC may be separately deployed inside an electronic device (e.g., a wearable device), or may be integrated in the same integrated circuit, where power consumption of the SOC refers to consumption of battery power by chips such as an AP and a CPU during operation.

The peripheral devices mainly include peripheral equipment such as a display screen, a loudspeaker, a microphone, a sensor and the like, and the power consumption of the peripheral equipment refers to the consumption of the peripheral equipment such as the display screen, the loudspeaker, the microphone, the sensor and the like on the battery power in the working process of the electronic equipment (such as wearable equipment).

The following describes a structure of a wearable device 100 provided in the present application.

Fig. 1 illustrates the structure of a wearable device 100 provided by the present application.

As shown in fig. 1, the wearable device 100 may include a main chip 101, a sub-chip 102, a memory module 103, one or more peripheral devices (e.g., peripheral device 104, peripheral device 105, peripheral device 106), a monitoring module 107, and so on. The memory module 103 may include a Random Access Memory (RAM) 1031 and a read-only memory (ROM) 1032, the sub-chip 102, the RAM 1031, and the ROM 1032 are all connected to the main chip 101, the peripheral device 104 is connected to the main chip 101, the peripheral device 105 is connected to the sub-chip 102, and the peripheral device 106 is connected to the main chip 101 and the sub-chip 102 at the same time. The monitoring module 107 is respectively connected with the sub-chip 102, the peripheral device 104, the peripheral device 105 and the peripheral device 106. Each module is described separately below.

The main chip 101:

the main chip 101 is located on a SOC and may include a processor, where the processor may include one or more processing units, e.g., the processor may include an AP, GPU, ISP, NPU, controller, memory, baseband processor, etc. The different processing units may be separate devices or may be integrated into one or more processors.

Among other things, the controller may be a neural center and a command center of the wearable device 100. The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution. The controller can control all the functional modules of the chip to work cooperatively and can also be used for running application programs. The controller may be an ARM architecture.

A GPU is a microprocessor that processes images, and may be used to perform mathematical and geometric calculations for graphics rendering. The processor may include one or more GPUs that execute program instructions to generate or alter display information. GPUs may be used for rendering of display images for games, video, and the like.

The baseband processor is a voice compression chip, and can be used for compressing voice when sending voice and decompressing received signals when receiving voice in a call scene.

The application processor is a very large scale integrated circuit which expands audio and video functions and a special interface on the basis of a low-power Central Processing Unit (CPU). In order to realize video and audio (high fidelity music), another coprocessor is needed to specially process the signals, and the coprocessor is an application processor. In consumer electronics products such as wearable devices, smart phones, tablets and the like, an application processor serves as a coprocessor to process signals so as to realize functions such as digital cameras, MP3 players, FM broadcast reception, video image playing and the like.

The NPU can rapidly process input information by referring to a biological neural network structure, for example, by referring to a transmission mode between human brain neurons, and can also continuously learn by self. Applications such as smart recognition of the wearable device 100 can be implemented by the NPU, for example: image recognition, face recognition, speech recognition, text understanding, and the like.

The ISP is used for processing data fed back by the camera. For example, when a photo is taken, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing and converting into a picture or video visible to naked eyes. The ISP can also carry out algorithm optimization on the noise, brightness and skin color of the picture. The ISP can also optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in a camera.

A memory may also be provided in the processor for storing instructions and data. In some embodiments, the memory in the processor is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor. If the processor needs to reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided, and the waiting time of the processor is reduced, so that the processing efficiency of the chip is improved.

In some embodiments, the master chip 101 may also include one or more interfaces. The interface may include an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a Universal Serial Bus (USB) interface, etc. Wherein, the GPIO interface can be configured by software. The GPIO interface may be configured as a control signal and may also be configured as a data signal. In some embodiments, the GPIO interface may also be configured as an I2C interface, an I2S interface, a UART interface, a MIPI interface, and the like.

The sub-chip 102:

the sub-chip 102 is connected to the main chip 101, and can receive and analyze data information sent by the peripheral device, and then transmit the data information to the main chip 101 for further processing. Illustratively, the sub-chip 102 may be a Micro Controller Unit (MCU), also called a microcontroller. The MCU is an embedded control chip and can be responsible for various sensing and monitoring works. For example, if wearable device 100 is the smart watch, the heart rate sensor in the smart watch can acquire user's original heart rate information, then sends above-mentioned original heart rate information to MCU, and MCU analyzes above-mentioned original heart rate information that receives and obtains user's heart rate data. For example, in household appliances such as electric cookers, induction cookers, electric kettles, and the like, the MCU can also cooperate with the temperature sensor to sense the water temperature, thereby realizing the temperature control function.

The storage module 103:

the memory module 103 may include a program storage area and a data storage area. The storage program area may store an operating system, an application program (such as a sound playing function, a picture or video playing function, etc.) required by at least one function, and the like. The storage data area may store data (e.g., audio data, a phonebook, etc.), and the like.

The memory module 103 may include a Random Access Memory (RAM) 1031 and a read-only memory (ROM) 1032. The random access memory 1031 is an internal memory that directly exchanges data with the CPU, and is typically a temporary data storage medium for an operating system or other programs that are running. The rom 1032, also called a fixed memory, can only read information and cannot write information, and once information is written, the information is set, and even if the power is turned off, the information is not lost.

Peripheral devices:

the peripheral devices may include peripheral devices such as a display screen, speakers, a microphone, a camera, a motor, a sensor, and the like. The peripheral devices may include, but are not limited to, peripheral device 104, peripheral device 105, and peripheral device 106. The peripheral devices 104 may be mounted on the main chip 101 individually, the peripheral devices 105 may be mounted on the sub-chip 102 individually, and the peripheral devices 106 may be mounted on the main chip 101 and the sub-chip 102 simultaneously.

The display screen is used for displaying images, videos and the like. The display screen includes a display panel. The display panel may adopt a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED), a flexible light-emitting diode (FLED), a miniature, a Micro-oeld, a quantum dot light-emitting diode (QLED), and the like.

Loudspeakers, also known as "horns," are used to convert electrical audio signals into sound signals. The wearable device 100 may listen to music through a speaker or listen to a hands-free conversation.

Microphones, also known as "microphones", are used to convert sound signals into electrical signals. When making a call or sending voice information, a user can input a voice signal into the microphone by making a sound by approaching the microphone through the mouth of the user. The wearable device 100 may be provided with at least one microphone. In other embodiments, the wearable device 100 may be provided with two microphones to achieve noise reduction functions in addition to collecting sound signals. In other embodiments, the wearable device 100 may further include three, four or more microphones to collect sound signals and reduce noise, and may further identify sound sources and perform directional recording functions.

The camera is used to capture still images or video. The object generates an optical image through the lens and projects the optical image to the photosensitive element. The photosensitive element may be a Charge Coupled Device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The light sensing element converts the optical signal into an electrical signal, which is then passed to the ISP where it is converted into a digital image signal. And the ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into image signal in standard RGB, YUV and other formats.

The motor may generate a vibration cue. The motor can be used for incoming call vibration prompt and can also be used for touch vibration feedback. For example, touch operations applied to different applications (e.g., photographing, audio playing, etc.) may correspond to different vibration feedback effects. The motor can also correspond to different vibration feedback effects when the touch operation is acted on different areas of the display screen. Different application scenes (such as time reminding, receiving information, alarm clock, game and the like) can also correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

The sensors may include touch sensors, gyroscope sensors, acceleration sensors, pressure sensors, fingerprint sensors, ambient light sensors, proximity light sensors, and the like.

Touch sensors are also called "Touch Panels (TPs)". The touch sensor can be arranged on the display screen, and the touch sensor and the display screen form the touch screen, which is also called a touch screen. The touch sensor is used to detect a touch operation applied thereto or nearby. The touch sensor can communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to the touch operation may be provided through the display screen.

The gyroscope sensors may be used to determine the motion gestures of the wearable device 100. In some embodiments, the angular velocity of wearable device 100 about three axes (i.e., x, y, and z axes) may be determined by gyroscope sensors.

The acceleration sensor may detect the magnitude of acceleration of the wearable device 100 in various directions (typically three axes). The magnitude and direction of gravity may be detected when the wearable device 100 is stationary. The wearable device 100 can also be used for recognizing the gesture of the wearable device 100, and is applied to horizontal and vertical screen switching, pedometers and other applications. For example, if the wearable device 100 is a smart band, the acceleration sensor may be configured to obtain acceleration information (e.g., an acceleration real-time state or an acceleration rate) of the user corresponding to the wearable device 100, for example, the acceleration real-time state may reflect an activity state of the hand of the user, and the activity state (e.g., still, fine motion, violent motion, etc.) of the hand of the user may be obtained through the MCU analyzing the acceleration real-time state.

The pressure sensor is used for sensing a pressure signal and converting the pressure signal into an electric signal. In some embodiments, the pressure sensor may be disposed on the display screen. When a touch operation is applied to the display screen, the wearable device 100 detects the intensity of the touch operation according to the pressure sensor. The wearable device 100 may also calculate the position of the touch from the detection signal of the pressure sensor. In some embodiments, the touch operations that are applied to the same touch position but different touch operation intensities may correspond to different operation instructions.

The fingerprint sensor is used for collecting fingerprints. The wearable device 100 can utilize the collected fingerprint characteristics to achieve fingerprint unlocking, access an application lock, fingerprint photographing, fingerprint incoming call answering, and the like.

The proximity light sensor 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 proximity light sensor emits infrared light outward through the light emitting diode. The wearable device 100 detects infrared reflected light from nearby objects using a photodiode. When sufficient reflected light is detected, it may be determined that there is an object near the wearable device 100. When insufficient reflected light is detected, the wearable device 100 may determine that there is no object near the wearable device 100.

The ambient light sensor is used for sensing the ambient light brightness. Wearable device 100 may adaptively adjust display screen brightness according to perceived ambient light levels. The ambient light sensor can also be used to automatically adjust the white balance when taking a picture.

In this application, the peripheral device may further include a communication module, wherein the communication module may include a mobile communication module and a wireless communication module.

The mobile communication module may be used to implement wireless communication functions of the wearable device 100. The wireless communication function may be implemented by an antenna (not shown), a mobile communication module, a modem (not shown), and the like.

The antenna is used for transmitting and receiving electromagnetic wave signals. Multiple antennas may be included in wearable device 100, each antenna operable to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module may provide a solution for applications on the wearable device 100 including 2G/3G/4G/5G, etc. wireless communication. The mobile communication module may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module can receive electromagnetic waves by an antenna, filter and amplify the received electromagnetic waves, and transmit the electromagnetic waves to a modem for demodulation. The mobile communication module can also amplify the signal modulated by the modem and convert the signal into electromagnetic wave to radiate the electromagnetic wave through the antenna.

In the present application, the modem may be provided in a mobile communication module.

In some embodiments, at least part of the functional modules of the mobile communication module may be disposed in the SOC in which the main chip 101 is located. In some embodiments, at least part of the functional modules of the mobile communication module may be provided in the same device as at least part of the modules in the SOC where the main chip 101 is located.

In some embodiments, the antenna of the wearable device 100 and the mobile communication module are coupled such that the wearable device 100 can communicate with networks and other devices through wireless communication techniques. The wireless communication technology may include global system for mobile communications (GSM), General Packet Radio Service (GPRS), code division multiple access (code division multiple access, CDMA), Wideband Code Division Multiple Access (WCDMA), time-division code division multiple access (time-division code division multiple access, TD-SCDMA), Long Term Evolution (LTE), and the like.

The wireless communication module may provide a solution for wireless communication applied to the wearable device 100, including Wireless Local Area Networks (WLANs) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), Infrared (IR), and the like. The wireless communication module may be one or more devices integrating at least one communication processing module. The wireless communication module receives electromagnetic waves through the antenna, frequency-modulates and filters electromagnetic wave signals, and sends the processed signals to the processor. The wireless communication module can also receive a signal to be sent from the processor, frequency-modulate and amplify the signal, and convert the signal into electromagnetic waves through the antenna to radiate the electromagnetic waves.

In some embodiments, the antenna and wireless communication module of wearable device 100 are coupled such that wearable device 100 can communicate with networks and other devices through wireless communication techniques. The wireless communication technology may include BT, GNSS, WLAN, NFC, FM, and/or IR technology, among others. The GNSS may include a Global Positioning System (GPS), a global navigation satellite system (GLONASS), a beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), and/or a Satellite Based Augmentation System (SBAS).

The monitoring module 107:

the monitoring module 107 may be used to receive and identify an external event that wakes up the wearable device 100, where the external event may be a user-triggered event that needs to be processed by the main chip. The monitoring module 107 may also be used to power up and/or power down peripheral devices (e.g., peripheral device 104, peripheral device 105, peripheral device 106), the sub-chip 102. For example, in the case that the peripheral device needs to be powered down, the monitoring module 107 may power down the peripheral device, i.e., power down the peripheral device. For another example, in a power-off state of the peripheral device, if the monitoring module 107 receives and recognizes an external event that wakes up the peripheral device, the monitoring module 107 may power on the peripheral device.

The wearable device 100 may further include a power supply (not shown in the figure) for supplying power to each component, and in some embodiments, the power supply may be logically connected to the main chip 101 and the sub-chip 102 through a power management chip, so as to implement functions of charging, discharging, and power consumption management through the power management chip.

It is to be understood that the illustrated structure does not constitute a specific limitation to the wearable device 100. In other embodiments of the present application, wearable device 100 may include more or fewer components than illustrated, or combine certain components, or split certain components, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The following describes a method for reducing power consumption of a wearable device provided by the present application.

Fig. 2 illustrates a flow of a method for reducing power consumption of a wearable device provided by the present application. As shown in fig. 2, the method for reducing power consumption of a wearable device includes:

s201, the wearable device 100 detects that the main chip needs to be in standby.

Specifically, the wearable device 100 may detect whether a master chip (such as the master chip 101 shown in fig. 1) needs to be standby. For example, for a Linux kernel based system, whether the master chip needs to be in standby may be determined by identifying whether there is a lock in the system that prevents the system from being in standby. For example, if the wearable device 100 needs the system to be unable to wait in a certain service scenario (e.g., a voice call scenario, an online video/live broadcast viewing scenario, an online game scenario, etc.), the wearable device 100 may set a lock that prevents the system from waiting, so that the system does not initiate a waiting procedure. For another example, if the wearable device 100 has no lock in the whole system that prevents the system from being in standby (e.g., the wearable device 100 does not have any service to be executed for a certain period of time and does not receive any user operation), the system may initiate a standby procedure.

S202, the wearable device 100 stores the field data of the main chip before the standby power-off.

Specifically, before the wearable device 100 powers down the main chip, the wearable device 100 may store the field data of the main chip before standby power down into the random access memory RAM, so as to ensure that the stored field data can be recovered when the main chip is powered up after the wearable device 100 powers down the main chip.

The powering down of the main chip by the wearable device 100 means to disconnect the power supply of the main chip, so that the main chip enters a complete power-off state. The above field data may be self-designed by the various modules in wearable device 100, including but not limited to the following data: the state of the main chip (for example, the register value of the no-power-off region in the SOC, the data of the RAM of the no-power-off region in the SOC, the state of the GPIO, etc.), the configuration of the power management chip (for example, the on-off state of each BUCK circuit (also referred to as a step-down circuit) in the power management chip), the state of the peripheral device, etc.

Taking the state of the peripheral device as an example, before the wearable device 100 powers down the main chip, the wearable device 100 may write a value in a register of the peripheral device into the random access memory RAM, where the value in the register of the peripheral device is used to indicate the current operation state of the peripheral device. When the main chip enters a normal working mode (after the wearable device 100 powers off the main chip) from a standby mode (after the wearable device 100 powers on the main chip), the peripheral device can acquire the running state of the peripheral device before the main chip enters the standby mode, and further can continue to execute the unfinished operation before the main chip enters the standby mode, so that the problem that the peripheral device cannot continue to execute the unfinished operation due to the fact that the running state of the peripheral device before the main chip enters the standby mode is lost due to power off is avoided.

It should be noted that step S202 is optional, for example, in the standby power-down policy of the main chip, a step of freezing the process (i.e., the process is not scheduled by the main chip but is still stored in the random access memory) during the standby of the conventional standby wake-up technique may be eliminated, that is, the process may not be frozen, in which case, step S202 may not need to be executed.

And S203, the wearable device 100 executes a peripheral device power-off strategy.

Specifically, the wearable device 100 may detect the state of the peripheral devices (e.g., peripheral device 104, peripheral device 105, peripheral device 106 shown in fig. 1) being turned on/off, and then the wearable device 100 may execute the peripheral device power-down policy.

It should be noted that when the wearable device 100 detects that the peripheral device is in the off state, the peripheral device still has current flowing through it, rather than being in the power-down state.

Three different power-down strategies for the peripheral device are described below:

1. the power-off strategy of the peripheral devices independently mounted on the main chip comprises the following steps:

for a peripheral device mounted on the main chip separately, for example, the peripheral device 104, if the wearable device 100 detects that the peripheral device 104 is in an on state, the peripheral device 104 is kept powered; if the wearable device 100 detects that the peripheral device 104 is in the off state, the peripheral device 104 is powered off, that is, the peripheral device 104 is powered off.

The peripheral device 104 may be a communication module, wherein the communication module may include a mobile communication module, a wireless communication module.

The mobile communication module power-down strategy and the wireless communication module power-down strategy are respectively described as an example.

The power-off strategy of the mobile communication module comprises the following steps:

specifically, the wearable device 100 may detect the state of the mobile communication module being turned on/off. If the wearable device 100 detects that the mobile communication module is in the on state, the wearable device keeps supplying power to the mobile communication module; if the wearable device 100 detects that the mobile communication module is in the off state, the power of the mobile communication module is turned off, that is, the power of the mobile communication module is cut off.

The "mobile communication module is in an on state" may refer to a state of the wearable device 100 in an application scenario where the mobile communication module is used for voice call, information transmission and reception, and the like. The "mobile communication module is in the off state" may refer to a state of the mobile communication module in an application scenario where the wearable device 100 is turned on in a do-not-disturb mode (or referred to as an airplane mode).

In some embodiments, the "mobile communication module in the on state" may also refer to a state of the mobile communication module in a case that the wearable device 100 does not perform communication connection with other electronic devices (such as a smartphone) through the bluetooth module, does not open a do-not-disturb mode, does not perform voice call, receives and sends information, and the like.

In some embodiments, the "mobile communication module in the off state" may also refer to a state of the mobile communication module in an application scenario in which the wearable device 100 performs a communication connection with another electronic device (e.g., a smartphone) through a bluetooth module. That is, when the wearable device 100 is in communication connection with another electronic device (e.g., a smartphone) through the bluetooth module, the mobile communication module may be automatically turned off, i.e., switched from the on state to the off state. In this case, the voice call, messaging, and other services may be performed by an electronic device connected to the wearable device 100.

Three application scenarios that can power down the mobile communication module are exemplarily described below:

application scenario 1: wearable device 100 may receive an operation of a user selecting "do not disturb mode", in response to which wearable device 100 may turn off the mobile communication module, and wearable device 100 then powers down the mobile communication module. The "do not disturb mode" can switch the mobile communication module from an on state to an off state.

Application scenario 2: the wearable device 100 can detect an operation of the user to perform a communication connection with another electronic device (e.g., a smart phone) through the bluetooth module, and in response to the operation, the wearable device 100 can put the mobile communication module in a turned-off state, and then the wearable device 100 powers down the mobile communication module.

Application scenario 3: when the wearable device 100 is in a low power state, a pop-up interface may be displayed on the wearable device 100, and the pop-up interface is used for the user to select which modules to turn off autonomously, so as to achieve the purpose of saving power consumption. One or more options can be included in the pop-up interface, such as a mobile communication module, a bluetooth module, a Wi-Fi module, and the like. For example, if the wearable device 100 receives an operation that the user has finished selecting the "mobile communication module" option, in response to the operation, the wearable device 100 may put the mobile communication module in the off state, and then the wearable device 100 powers down the mobile communication module.

It should be noted that the above application scenarios are only exemplary to illustrate the power-down strategy of the mobile communication module, and should not be construed as a limitation of the present application.

The wireless communication module power-off strategy comprises the following steps:

illustratively, the peripheral device 104 may be a wireless communication module (e.g., a Wi-Fi module, a bluetooth module, etc.), and if the wearable device 100 detects that the wireless communication module is in an on state, for example, the wearable device 100 is transmitting the acquired user data (e.g., heart rate, exercise energy, psychological pressure value, etc.) to other electronic devices (e.g., a smartphone) connected to the wearable device 100 through the wireless communication module, the wearable device 100 may keep supplying power to the wireless communication module.

For example, wearable device 100 may receive an operation of a user selecting "do not disturb mode," in response to which wearable device 100 may place the wireless communication module in an off state (e.g., Wi-Fi module, bluetooth module, etc.), and then wearable device 100 may power down, i.e., power down, the wireless communication module. The wireless communication module can be switched from an on state to an off state in the 'do not disturb mode'.

For example, when the wearable device 100 is in a low power state, a pop-up interface may be displayed on the wearable device 100, and the pop-up interface is used for the user to autonomously select which modules to turn off, so as to achieve the purpose of saving power consumption. One or more options, such as a bluetooth module, a Wi-Fi module, etc., may be included in the pop-up interface. For example, if the wearable device 100 receives an operation that the user has finished selecting the "bluetooth module" option, in response to the operation, the wearable device 100 may put the bluetooth module in an off state, and then the wearable device 100 may power down the bluetooth module. For another example, if the wearable device 100 receives an operation that the user has finished selecting the "Wi-Fi module" option, in response to the operation, the wearable device 100 may set the Wi-Fi module in the off state, and then the wearable device 100 may power down the Wi-Fi module.

It should be noted that, due to different product designs, in some embodiments, the bluetooth module may be mounted on the sub-chip separately or on both the main chip and the sub-chip, so that the power-down policy of the bluetooth module may be adjusted adaptively. For example, if the bluetooth module is mounted on the sub-chip separately, the following power-down strategy of the peripheral device mounted on the sub-chip separately may be executed; if the bluetooth module is simultaneously mounted on the main chip and the sub-chip, the following power-down strategy of the peripheral devices simultaneously mounted on the main chip and the sub-chip can be executed.

2. The power-off strategy of the peripheral devices independently mounted on the sub-chip comprises the following steps:

for a peripheral device mounted on the sub-chip separately, for example, the peripheral device 105, if the wearable device 100 detects that the peripheral device 105 is in an on state, the peripheral device 105 is kept powered; if the wearable device 100 detects that the peripheral device 105 is in the off state, the peripheral device 105 is powered down, that is, the peripheral device 105 is powered off.

The peripheral devices 105 may include, but are not limited to, sensors (e.g., acceleration sensors, gyroscope sensors, pressure sensors, etc.), speakers, microphones, and the like, among others.

For example, the peripheral device 105 may be an acceleration sensor, and if the wearable device 100 detects that the acceleration sensor is in an on state, for example, the wearable device 100 is acquiring acceleration information of a corresponding user through the acceleration sensor to determine an activity state of the user, the wearable device 100 may keep supplying power to the acceleration sensor. If the wearable device 100 detects that the acceleration sensor is in the off state, for example, the acceleration sensor does not update the acceleration information for a long period of time, the wearable device 100 may power down the acceleration sensor.

Illustratively, the peripheral device 105 may be a speaker, and if the wearable device 100 detects that the speaker is in an on state, for example, the wearable device 100 is listening to music through the speaker, or listening to a hands-free call, the wearable device 100 may keep powering the speaker. If the wearable device 100 detects that the speaker is in the off state, the wearable device 100 may power down the speaker.

For example, the peripheral device 105 may be a microphone, and if the wearable device 100 detects that the microphone is in an on state, for example, the wearable device 100 is sending a voice message through the microphone, the wearable device 100 may keep power to the microphone. If the wearable device 100 detects that the microphone is in the off state, the wearable device 100 may power down the microphone.

For example, when the wearable device 100 is in a low power state, a pop-up interface may be displayed on the wearable device 100, and the pop-up interface is used for the user to autonomously select which peripheral devices to turn off, so as to achieve the purpose of saving power consumption. Wherein one or more options, such as a sensor, a speaker, a microphone, etc., may be included in the pop-up interface. For example, if wearable device 100 receives an operation that the user has finished selecting the "speaker" option, wearable device 100 may turn off the speaker in response to the operation, and wearable device 100 may then power down the speaker.

In some embodiments, for a peripheral device mounted separately on a sub-chip, the wearable device 100 may also remain powered all the time whether the peripheral device is in an on state or an off state.

3. And simultaneously, the peripheral devices mounted on the main chip and the sub-chip are powered off:

for peripheral devices mounted on both the main chip and the sub-chip, for example, the peripheral device 106, may be controlled by the sub-chip. If the wearable device 100 detects that the peripheral device 106 is in an open state, the peripheral device 106 is kept powered; if the wearable device 100 detects that the peripheral device 106 is in the off state, the peripheral device 106 is powered off, that is, the peripheral device 106 is powered off.

The peripheral devices 106 may include, but are not limited to, a display screen, a touch sensor, and the like, among others.

For example, the peripheral device 106 may be a display screen, and in a case that the wearable device 100 is a smart watch, if the wearable device 100 detects that the display screen is in an on state, the display screen is powered on. If the wearable device 100 detects that the display screen is in the off state, the wearable device 100 may power down the display screen. After the display screen is powered off, if the smart watch detects the operation of pressing the button (the up key button or the down key button) by the user, the smart watch can wake up the display screen in response to the operation, namely, the display screen is powered on and lightened.

Illustratively, the peripheral device 106 may be a touch sensor, wherein the touch sensor may be disposed in the display screen for detecting a touch operation applied to the display screen by a user. If the wearable device 100 detects that the touch sensor is in the on state, for example, the wearable device 100 detects that the user is performing a touch operation on the display screen, the wearable device 100 keeps supplying power to the touch sensor. If the wearable device 100 detects that the touch sensor is in an off state, for example, the display screen is in an off state, and a touch operation of the user is not detected within a period of time, the wearable device 100 may power down the touch sensor.

For example, when the wearable device 100 is in a low power state, a pop-up interface may be displayed on the wearable device 100, and the pop-up interface is used for the user to autonomously select which peripheral devices to turn off, so as to achieve the purpose of saving power consumption. One or more options may be included in the pop-up interface, such as a display screen, a touch sensor, and the like. For example, if the wearable device 100 receives an operation that the user has finished selecting the "display screen" option, in response to the operation, the wearable device 100 may turn off the display screen, and then the wearable device 100 may power down the display screen.

In some embodiments, for a peripheral device mounted on both the main chip and the sub-chip, the wearable device 100 may also keep power to the peripheral device all the time, whether the peripheral device is in an on state or an off state.

It should be noted that the above application scenarios are only exemplary to illustrate the power-down strategy of the peripheral device, and should not be construed as a limitation of the present application.

S204, the wearable device 100 powers down the main chip, that is, executes a main chip standby power down policy.

Specifically, the principle of the hardware circuit corresponding to the standby power-down strategy of the main chip in the present application is shown in fig. 3 and 4, and the following description is developed:

in a possible implementation manner, as shown in fig. 3, a hardware circuit corresponding to the standby power-off policy of the main chip is located outside the power management chip of the wearable device 100, and is suitable for an application scenario that does not change an internal mechanism of the original power management chip.

Referring to fig. 3, a reset pin 1 of the SOC where the main chip is located is connected to an enable pin 2 of the power management chip through an or gate circuit, where the reset pin 1 of the SOC where the main chip is located may output a reset signal 1, the enable pin 2 of the power management chip may output a main chip standby power-off enable signal, the reset signal 1 and the main chip standby power-off enable signal may be subjected to logical or operation through the or gate circuit, and then the reset signal 2 is output from the or gate circuit, and the reset signal 2 is input to the random access memory or the read only memory through the reset pin 2. It is easy to understand that whether the random access memory or the read only memory is reset or not is controlled by the reset signal 1 and the standby power-off signal of the main chip, that is, the random access memory or the read only memory can be reset only when the reset signal 1 and the standby power-off signal of the main chip are both asserted. In addition, the standby power-off enable signal of the main chip may be input to the BUCK circuit (also referred to as a step-down circuit) through an enable pin 1 of the BUCK circuit, so that the BUCK circuit starts to operate, a power supply in the wearable device 100 may output a power supply signal 1, the power supply signal 1 is input to the BUCK circuit through the power supply pin 1, an output end of the BUCK circuit outputs a power supply signal 2, and the power supply signal 2 is input to the random access memory or the read only memory through the power supply pin 2 to supply power to the random access memory or the read only memory. In the case that the wearable device 100 is not powered off, the power source may always supply power to the random access memory or the read only memory through the BUCK circuit. It is easy to understand that the voltage required by the ram or rom is lower than the power supply voltage of the wearable device 100, and the BUCK circuit is a voltage reduction type circuit, so the BUCK circuit can adapt to the voltage required by the ram or rom. The random access memory is kept powered to keep field data, and the read-only memory is kept powered to ensure that the device is not damaged due to frequent switching.

In a possible implementation manner, as shown in fig. 4, the hardware circuit corresponding to the main chip standby power-down policy (i.e., the hardware circuit corresponding to the main chip standby power-down policy shown in fig. 3) is located inside the power management chip of the wearable device 100, that is, the hardware circuit corresponding to the main chip standby power-down policy is integrated into the power management chip, so that the device packaging area can be reduced, the size requirement of the wearable device can be better met, and the wake-up recovery time after the main chip is standby power-down can be reduced.

Referring to fig. 4, when the main chip is in standby and the electrical function is turned on, the reset pin 1 of the SOC where the main chip is located outputs a reset signal 1 to the reset signal pin from the SOC on the power management chip, and then after the reset signal 1 and the main chip power-off enable signal are logically or-operated through the or gate circuit, a reset signal 2 (i.e., the reset signal 2 output from the output end of the or gate circuit in fig. 3) is output from the reset pin 3 on the power management chip, and the reset signal 2 is input to the random access memory or the read only memory through the reset pin 2. The power supply signal 2 output from the power supply pin 3 on the power supply management chip (i.e. the power supply signal 2 output from the output terminal of the BUCK circuit in fig. 3) inputs the power supply signal 2 to the random access memory or the read only memory through the power supply pin 2, so as to supply power to the random access memory or the read only memory.

In the case of a multi-chip multi-power management chip, the standby power-down enable signal of the main chip may be output from the power management chip of the sub-chip that is not powered down; aiming at the condition that the main chip and the sub-chip only have one power management chip, the standby power-off enabling signal of the main chip can be output from the power management chip.

After determining that the main chip standby power-down electric signal is valid, the wearable device 100 may power down the main chip. After the wearable device 100 powers down the main chip, the wearable device 100 enters a main chip standby power-down state.

The determination that the electrical signal takes effect when the main chip is in standby may be implemented through an interface, a hardware switch, and the like provided by a chip platform, which is not limited herein.

In some possible implementation manners, the wearable device 100 may execute the peripheral device powering-down strategy separately mounted on the main chip, the peripheral device powering-down strategy separately mounted on the sub-chip, and then execute step S204 after the peripheral device powering-down strategies simultaneously mounted on the main chip and the sub-chip are executed, to power down the main chip, that is, the wearable device 100 powers down the main chip after the peripheral device powering-down strategy is completely executed.

In other possible implementations, the wearable device 100 may execute step S204 after executing the power-down policy of the peripheral device separately mounted on the main chip, so as to power down the main chip.

Another method for reducing power consumption of a wearable device provided by the present application is described below.

Fig. 5 illustrates another method flow for reducing power consumption of a wearable device provided by the present application. As shown in fig. 5, the method for reducing power consumption of a wearable device includes:

s501, the wearable device 100 detects that the main chip needs to be in standby.

The specific execution process of step S501 may refer to the related content of step S201 in fig. 2, and is not described herein again.

S502, the wearable device 100 saves the system state of the main chip before powering off in standby to the random access memory.

The specific execution process of step S502 may refer to the related content of step S202 in fig. 2, and is not described herein again.

S503, the wearable device 100 may detect whether the peripheral device is mounted on the main chip only, and if so, execute step S504; if not, step S505 is executed.

S504, the wearable device 100 detects whether the state of the peripheral device is an open state, and if yes, the step S507 is executed; if not, go to step S508.

S505, the wearable device 100 detects whether the peripheral device is mounted on the main chip and the sub-chip at the same time, and if yes, the step S506 is executed; if not, step S509 is executed.

And S506, the wearable device 100 gives the peripheral device to the sub-chip for control.

And S507, the wearable device 100 continuously maintains the power supply to the external device.

And S508, powering down the external device by the wearable device 100.

The specific implementation process from step S503 to step S508 may refer to the relevant content in step S203 in fig. 2, and is not described herein again.

S509, the wearable device 100 powers down the main chip. After the wearable device 100 powers down the main chip, the wearable device 100 enters a main chip standby power-down state.

In a possible implementation manner, the wearable device 100 detects that the peripheral device is only mounted on the main chip, and then, after the wearable device 100 detects that the peripheral device is in the on state, the wearable device 100 continues to supply power to the peripheral device, and in some cases, the peripheral device may enter a low power consumption state until the peripheral device completes a task, and the wearable device 100 may power down the peripheral device, and then, step S509 is executed to power down the main chip.

In a possible implementation manner, the wearable device 100 detects that the peripheral device is only mounted on the main chip, and then, after the wearable device 100 detects that the peripheral device is in the off state, the wearable device 100 powers off the peripheral device, and then, step S509 is executed to power off the main chip.

In a possible implementation manner, when the wearable device 100 detects that the peripheral device is mounted on only the sub-chip, the wearable device 100 may directly perform step S509 to power down the main chip.

In a possible implementation manner, the wearable device 100 detects that the peripheral device is mounted on the main chip and the sub-chip at the same time, then the peripheral device may be handed to the sub-chip for control, and then the wearable device 100 executes step S509 to power down the main chip. The specific content of the sub-chip controlling the peripheral device may refer to the description of the relevant text in step S203 in fig. 2, and is not described herein again.

The specific hardware implementation of step S509 may refer to the relevant content of step S204 in fig. 2, and is not described herein again.

It should be noted that, in the whole process of the wearable device 100 executing steps S501 to S509, the wearable device 100 keeps power supply to the random access memory and the read only memory.

After the wearable device 100 is powered off in the standby mode of the main chip by using the method shown in fig. 5, the wearable device 100 may detect an external event that wakes up the main chip, where the external event that wakes up the main chip may trigger the main chip to resume powering on, and wake-up recovery time may also be different in different chip platforms, and the wake-up recovery time may be in the following two cases, which are described in detail below:

case 1: the wake-up recovery time after the main chip is powered off in a standby mode is smaller than or close to the wake-up recovery time after the main chip is powered off in a conventional standby mode (also called as first threshold time)

Specifically, the conventional wake-up after standby time refers to the time required for the wake-up after standby recovery process when the conventional wake-up after standby technology described above is used. For the traditional standby awakening technology, the standby process can comprise three steps of process freezing, entering of the peripheral device into a low power consumption state and processor running suspension, and the awakening recovery process can comprise three steps of processor continuous running, recovery of the peripheral device from the low power consumption state to a normal state and process unfreezing. And the wake-up recovery time after the main chip is powered off in a standby mode can be considered as the power-on recovery time of the main chip plus the wake-up recovery time after the traditional standby mode, so that the wake-up recovery time after the main chip is powered off in a standby mode is inevitably greater than the wake-up recovery time after the traditional standby mode.

In a possible implementation manner, if the wake-up recovery time after the standby power-down of the main chip is made to be less than or close to the wake-up recovery time after the standby power-down of the conventional main chip, a step of freezing a process (that is, the process is not scheduled by the main chip but is still stored in the random access memory) in the standby power-down strategy of the conventional standby wake-up technology may be removed, that is, the process may not be frozen, so that the step of unfreezing the process is not required in the wake-up recovery process, thereby reducing the wake-up recovery time, and achieving the purpose that the wake-up recovery time after the standby power-down of the main chip is less than or close to the wake-up recovery time after the conventional standby. Then the main chip power consumption for resuming power-on is smaller or close to the conventional standby wake-up power consumption. In this case, the wearable device 100 is suitable for a full-scene standby power-down strategy using a main chip.

Case 2, the wake-up recovery time after the main chip is powered off in standby is longer than that after the traditional standby

If the wake-up recovery time after the main chip is powered off in a standby mode is longer than the wake-up recovery time after the traditional standby mode, under the condition that power consumption benefits need to be considered, the power consumption benefits of the main chip in the standby mode are related to the times of triggering the main chip to recover power-on by external events of the main chip in the standby mode. It is easy to understand that, in a period of time, as the number of times of power restoration of the main chip increases, the power consumption benefit of standby power down of the main chip is gradually reduced, and when a certain critical value is reached, the sum of the power consumption of standby power down and wake-up restoration of the main chip is greater than the sum of the power consumption of traditional standby power down and wake-up restoration. In this case, if the purpose of saving power consumption is to be achieved, the wearable device 100 is not suitable for using the main chip standby power-down strategy in the full scene, but suitable for using the main chip standby power-down strategy in the partial scene with a small number of awakenings (e.g., at night).

Therefore, the application provides a main chip standby power-off strategy based on wake-up recovery time after different main chips are standby power-off.

Fig. 6 illustrates an example of a main chip standby power-down strategy based on wake-up recovery time after standby power-down of different main chips provided by the present application. As shown in fig. 6, the policy includes:

s601, the chip platform of the wearable device 100 determines whether the wake-up recovery time after powering down the main chip is less than or close to the wake-up recovery time after the traditional standby. If yes, go to step S602; if not, go to step S603.

S602, the wearable device 100 uses a main chip standby power-down strategy in a full scene.

Specifically, if the wake-up recovery time after the main chip is powered off in standby is less than or close to the wake-up recovery time after the conventional standby, the wearable device 100 uses the main chip power off in standby in the whole scene.

The specific steps of the wearable device 100 using the main chip standby power-off policy in the whole scene may refer to the related contents of the method flow shown in fig. 5, which are not described herein again.

S603, the wearable device 100 uses a main chip standby power-off strategy in part of scenes.

Specifically, if the wake-up recovery time after the main chip is powered off in standby is greater than the wake-up recovery time after the traditional standby, the wearable device 100 uses the main chip power off in standby in some scenes. For example, part of the scene may be at night, and since most users are in a sleep state in the night period, the number of times of waking is small, the power consumption for waking and recovering by the main chip is reduced, and then the wearable device 100 may use the standby power-down policy of the main chip at night.

The specific steps of using the main chip standby power-down strategy in part of the scenarios of the wearable device 100 will be described in detail later, and will not be expanded here.

The method for waking up and recovering the wearable device main chip after standby power-off is introduced below.

Fig. 7 illustrates a flowchart of a method for wake-up recovery after a wearable device main chip is powered off in a standby mode. As shown in fig. 7, the method includes:

s701, the wearable device 100 is in a standby power-down state of the main chip.

S702, the wearable device 100 may detect whether there is an external event to wake up the main chip, if yes, execute step S703; if not, the process continues to step S702.

In particular, while the main chip is in a standby power-down state, some modules in the wearable device 100 that may not be powered down (e.g., mobile communication modules, Wi-Fi modules, bluetooth modules, touch sensors/displays, etc.) may detect whether there is an external event that wakes up the main chip. Alternatively, in the case that some modules are already powered down, the wearable device 100 may detect whether there is an external event waking up the main chip through the monitoring module 108 shown in fig. 1 (which may not be powered down all the time), and if so, power up the corresponding modules. The external event may be an event triggered by a user and needing to be processed by the main chip.

For example, in a case that the mobile communication module is not powered off, when the wearable device 100 may detect that another electronic device (e.g., a smartphone) attempts to perform a voice call with the wearable device 100, the wearable device 100 may perform step S703 to power on the main chip.

For example, in a case that the bluetooth module is not powered off, when the wearable device 100 may detect that another electronic device (e.g., a smartphone) attempts to perform communication connection with the wearable device 100 through the bluetooth module, the wearable device 100 may perform step S703 to power on the main chip.

For example, in the case that the display screen is powered down, the wearable device 100 may detect an operation of pressing any function button (e.g., an up button or a down button of a smart watch when the wearable device 100 is a smart watch) by the user through the monitoring module 108 shown in fig. 1, or the wearable device 100 may detect that a certain action (e.g., a wrist-up action) is generated by the user. Then, the monitoring module 108 shown in fig. 1 may power up the display screen, and then the wearable device 100 may perform step S703 to power up the main chip.

And S703, the wearable device 100 powers on the main chip.

Specifically, if the wearable device 100 detects an external event that wakes up the main chip, the wearable device 100 turns on the power supply of the main chip to supply power to the main chip. The process of powering on the main chip by the wearable device 100 needs the hardware platform to provide a relevant interface to complete.

S704, the wearable device 100 recovers the system state saved before the main chip is powered off in standby from the random access memory.

The system state saved before the main chip is powered off in the standby mode may be the field data described in step S202 shown in fig. 2, and specific reference may be made to relevant contents in step S202, which is not described herein again.

S705, after detecting that the power on of the main chip is recovered, the wearable device 100 transmits the external event to the main chip.

Whether the main chip is powered on or not can be judged by detecting the corresponding GPIO state (for example, the level value of the GPIO pin) by the wearable device 100.

S706, the main chip processes the external event.

Specifically, after the main chip is powered on and recovered, the main chip is switched from a power-off mode to a working mode, and starts to process external events. The process of processing the external event after the power-on recovery of the main chip is consistent with the process of processing the external event by wake-up recovery in the traditional standby wake-up technology.

The following describes a method for powering down a wearable device main chip in standby mode in a partial scene.

Fig. 8 illustrates, by taking a night scene as an example, a flow of a method for standby power-down and wake-up recovery of a wearable device main chip in a partial scene (night) provided by the present application.

S801, the wearable device 100 may detect a sleep/out-of-sleep event.

Specifically, when the wearable device 100 detects that the user wears the wearable device 100, the wearable device 100 may detect the event of falling/falling asleep by detecting an index such as physiological data of the user, and may recognize the start time of falling asleep and the end time of falling asleep (which may also be referred to as the start time of falling asleep). The time interval from the user sleep onset time to the user sleep onset end time may be referred to as a user sleep period.

In one possible implementation, the user sleep time period may be user-defined. The wearable device 100 may determine that the user is in the sleep/out-of-sleep state according to whether the current time is between the user sleep time periods.

S802, the wearable device 100 may determine whether the user enters a sleep state. If yes, go to step S804; if not, step S803 is executed.

In particular, the wearable device 100 may determine whether the user enters a sleep state through the detected sleep/out event.

For example, in a case where the wearable device 100 detects that the user does not autonomously set the sleep time period on the wearable device 100, the wearable device 100 may determine that the user is in the sleep/out-of-sleep state by detecting an index such as physiological data of the user.

For example, in a case where the wearable device 100 detects that the user autonomously sets a sleep time period on the wearable device 100, if the wearable device 100 detects that the current time is between the sleep time periods, it is determined that the user enters a sleep state; if the wearable device 100 detects that the current time is not between the sleep time periods, it is determined that the user has not entered the sleep state.

S803, the wearable device 100 turns off the standby power-down function of the main chip.

Specifically, in the case where the wearable device 100 determines that the user does not enter the sleep state, the wearable device 100 turns off the main-chip standby power-down function, i.e., does not turn on the main-chip standby power-down function.

S804, the wearable device 100 acquires the sleep time period of the user identified by the electronic device 200 connected thereto.

Specifically, the wearable device 100 may acquire the sleep time period (including the start time and the end time) of the user identified by the electronic device 200 (e.g., a smartphone) connected thereto. Wherein, the time period for the user to fall asleep can be set by the user.

It should be noted that the wearable device 100 and the electronic device 200 can exchange data information based on bluetooth communication connection. Not limited to bluetooth communication connections, the connection established between the wearable device 100 and the electronic device 200 may also be other communication connections, such as Wi-Fi direct connections, cellular mobile communication connections, and so forth.

S805, the user sleep onset time t1 identified by the wearable device 100 is compared with the start time of the user sleep onset time period identified by the electronic device 200, and the latest time is taken as the sleep onset time t 2.

Alternatively, the sleep onset time t2 may be the user sleep onset time t1 recognized by the wearable device 100, instead of the latest time when the user sleep onset time t1 recognized by the wearable device 100 is compared with the start time of the user sleep time period recognized by the electronic device 200.

S806, the wearable device 100 may determine whether the current time is between the sleep onset time t2 and the end time of the user sleep time period. If yes, go to step S807; if not, step S803 is executed.

Here, the end time of the user sleep time period may be the end time of the user sleep time period recognized by the electronic device 200, or may be the end time of the user sleep time period set by the wearable device 100.

For example, in a case that the wearable device 100 detects that the user does not autonomously set the sleep time period on the wearable device 100, the wearable device 100 may determine whether the current time is between the sleep start time t2 and the end time of the sleep time period of the user identified by the electronic device 200, if yes, execute step S807; if not, step S803 is executed.

For example, in a case that the wearable device 100 detects that the user autonomously sets the sleep time period on the wearable device 100, the wearable device 100 may determine whether the current time is between the sleep start time t2 and the end time of the sleep time period autonomously set by the wearable device 100, and if yes, execute step S807; if not, step S803 is executed.

S807, the wearable device 100 starts a standby power-down function of the main chip.

Specifically, after the wearable device 100 determines that the current time is between the sleep-in start time t2 and the end time of the user sleep-in time period, the wearable device 100 may turn on the main-chip standby power-off function, that is, the wearable device 100 may execute the method flow exemplarily shown in fig. 2 or fig. 5, so that the wearable device 100 may enter the main-chip standby power-off state.

S808, the wearable device 100 may execute the main chip wake-up recovery procedure after detecting the external event to wake up the main chip.

The specific execution process of the main chip wake-up recovery flow may refer to the related content of the method shown in fig. 7, and is not described herein again.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of reducing power consumption of a wearable device, the wearable device comprising: the method comprises the following steps of:

the wearable device detects that the main chip needs to be in standby;

the wearable equipment executes a power-off strategy of the peripheral device according to the detected state of the peripheral device;

the wearable device powers down the main chip.

2. The method according to claim 1, wherein the wearable device executes the peripheral device power-down policy according to the detected state of the peripheral device, specifically comprising:

if the wearable equipment detects that the peripheral device is in an open state, the wearable equipment keeps supplying power to the peripheral device;

if the wearable equipment detects that the peripheral device is in a closed state, the wearable equipment powers off the peripheral device.

3. The method according to claim 2, wherein the wearable device detecting that the peripheral device is in the off state specifically comprises:

if the peripheral device is a mobile communication module, the wearable device detects an operation of communication connection between a user and other electronic devices through a Bluetooth module, and responds to the operation, the wearable device sets the mobile communication module in a closed state;

or the like, or, alternatively,

the wearable device receives an operation of selecting a 'do not disturb mode' by a user, and responds to the operation, the wearable device sets the mobile communication module in a closed state;

or the like, or, alternatively,

when the wearable device is in a low power state, the wearable device displays a popup interface, wherein the popup interface comprises one or more options, and the one or more options comprise a mobile communication module option; the wearable device receives the operation that the user finishes selecting the mobile communication module option, and responds to the operation to place the mobile communication module in a closed state.

4. The method according to claim 2, wherein the wearable device detecting that the peripheral device is in the off state specifically comprises:

if the peripheral device is a Bluetooth module, the wearable equipment receives the operation of selecting a 'do not disturb mode' by a user, and responds to the operation, and the wearable equipment sets the Bluetooth module in a closed state;

or the like, or, alternatively,

when the wearable device is in a low-power state, the wearable device displays a pop-up interface, wherein the pop-up interface comprises one or more options, and the one or more options comprise a Bluetooth module option; the wearable device receives the operation that the user completes the selection of the Bluetooth module option, and responds to the operation, the wearable device sets the Bluetooth module in a closed state.

5. The method according to claim 2, wherein the wearable device detecting that the peripheral device is in the off state specifically comprises:

if the peripheral device is a Wi-Fi module, the wearable device receives an operation that a user selects a 'do not disturb mode', and in response to the operation, the wearable device sets the Wi-Fi module in a closed state;

or the like, or, alternatively,

when the wearable device is in a low-power state, the wearable device displays a pop-up interface, the pop-up interface including one or more options, the one or more options including a "Wi-Fi module" option; the wearable device receives an operation of selecting the Wi-Fi module option by a user, and responds to the operation, the wearable device puts the Wi-Fi module in a closed state.

6. The method of any of claims 1-5, wherein prior to the wearable device executing the peripheral device power down policy based on the detected state of the peripheral device, the method further comprises:

and the wearable equipment stores the field data of the main chip before standby power-off.

7. The method according to any one of claims 1-6, further comprising:

executing, by the wearable device, a power-down policy of the peripheral device according to the detected state of the peripheral device under the following conditions:

the awakening recovery time of the main chip after standby power-off is longer than a first threshold time, and the wearable device detects that the user is in a sleeping state;

or the like, or, alternatively,

and the awakening recovery time of the main chip after standby power-off is less than or close to the first threshold time.

8. A wearable device, characterized in that the wearable device comprises:

the wearable device powers off the main chip when the wearable device detects that the main chip needs to be in a standby state;

the wearable device executes a power-off strategy of the peripheral device according to the detected state of the peripheral device under the condition that the wearable device detects that the main chip needs to be in standby;

and the sub-chip controls the peripheral devices mounted on the main chip and the sub-chip simultaneously under the condition that the wearable equipment detects that the main chip needs to be in standby.

9. The wearable device according to claim 8, wherein the wearable device executes the peripheral device power-down policy according to the detected state of the peripheral device, specifically including:

10. The wearable device according to claim 9, wherein the wearable device detects that the peripheral device is in the off state, and in particular comprises:

or the like, or, alternatively,

when the wearable device is in a low-power state, the wearable device displays a pop-up interface, wherein the pop-up interface comprises one or more options, and the one or more options comprise a mobile communication module option; the wearable device receives an operation that a user completes selection of the mobile communication module option, and in response to the operation, the wearable device places the mobile communication module in a closed state.

11. The wearable device according to claim 9, wherein the wearable device detects that the peripheral device is in the off state, and in particular comprises:

or the like, or, alternatively,

12. The wearable device according to claim 9, wherein the wearable device detects that the peripheral device is in the off state, and in particular comprises:

or the like, or, alternatively,

13. The wearable device of any of claims 8-12, wherein prior to the wearable device executing the peripheral device power down policy in accordance with the detected state of the peripheral device, the wearable device is further configured to:

14. The wearable device of any of claims 8-13, further configured to:

executing the wearable device to execute the peripheral device power-down strategy according to the detected state of the peripheral device under the following conditions:

the awakening recovery time of the main chip after standby power-off is longer than a first threshold time, and the wearable device detects that the user is in a sleep state;

or the like, or, alternatively,

15. A computer storage medium comprising computer instructions that, when executed on a wearable device, cause the wearable device to perform the method of any of claims 1-7.