WO2020184831A1

WO2020184831A1 - Electronic device and method for controlling same

Info

Publication number: WO2020184831A1
Application number: PCT/KR2020/000630
Authority: WO
Inventors: 신재선; 여성구; 조준래
Original assignee: 삼성전자주식회사
Priority date: 2019-03-13
Filing date: 2020-01-13
Publication date: 2020-09-17
Also published as: KR20200109503A; KR102632810B1

Abstract

The present disclosure provides an electronic device and a method for controlling same. An electronic device of the present disclosure comprises: a sensor; a communication interface comprising circuitry; a wireless power interface comprising circuitry; and a processor for driving the sensor by means of a wireless power received from a wireless power supply apparatus via the wireless power interface, and driving the sensor in an operating mode in order to detect a user when a detection signal with respect to the user is received via the communication interface from an external sensor for detecting a user by means of a power obtained by means of energy harvesting while the sensor is driven in a power saving mode.

Description

Electronic device and control method thereof

The present disclosure relates to an electronic device and a control method thereof, and more particularly, to an electronic device using wireless power transmission and a control method thereof.

Recently, various technologies based on the Internet of Things (IoT) are being developed. In order to provide services based on various IoT environments to users, a plurality of electronic devices constituting the IoT environment are limited to time in various places such as fixed locations (eg, indoors, etc.) or moving locations (eg, vehicles, etc.). It is required to be driven without receiving.

To this end, power may be wirelessly supplied to a plurality of electronic devices. For example, a wireless power transfer technology (WPT, Wireless Power Transfer) that wirelessly supplies power using a magnetic induction method (Inductive Power Transfer), a magnetic resonance method (Magnetic Resonance Coupling), an electromagnetic wave method, etc. Energy Harvesting, which supplies power by converting energy harvested from an energy source into electrical energy, can be applied.

However, in this case, there is a problem that the efficiency of power supplied wirelessly is low. In addition, in the field of services such as security, security, child safety, etc., the need to improve the efficiency of power consumed for driving electronic devices in a limited power supply environment is emerging because electronic devices are required to be always turned on. .

The present disclosure was conceived by the necessity described above, and an object of the present disclosure is to provide an electronic device capable of detecting a user using an external sensor that converts external energy into electrical energy by energy harvesting and a control method thereof. have.

In order to achieve the above object, an electronic device according to an embodiment of the present disclosure includes a sensor, a communication interface including a circuit, a wireless power interface including a circuit, and a wireless power supply device received through the wireless power interface. The sensor is driven using wireless power, and while the sensor is running in the power saving mode, a detection signal for the user is transmitted from an external sensor that senses the user using power obtained by energy harvesting. When received through, it includes a processor that drives the sensor in an operation mode to detect a user.

Here, when the sensor is driven in the power saving mode, the processor controls the sensor to perform a detection operation in a first cycle, and when the sensor is driven in an operation mode, the sensor performs a detection operation in a second cycle shorter than the first cycle. Can be controlled.

Meanwhile, the sensor detects a user existing indoors, and the external sensor may detect a user who is located outdoors and enters the room.

Meanwhile, when a detection signal is received from an external sensor, the processor may transmit a signal for stopping the detection operation of the external sensor to the external sensor.

Meanwhile, when a user is detected by a sensor driven in an operation mode, the processor may transmit a signal indicating that the user is detected to an external server.

Meanwhile, when the user is not detected for more than a predetermined time by the sensor driven in the operation mode, the processor may transmit a signal indicating that the user has not been detected to the external sensor and drive the sensor in the power saving mode.

Meanwhile, the electronic device of the present disclosure further includes a battery, and the processor transmits a signal for requesting transmission of wireless power through the wireless power interface to the wireless power supply device when the power level charged in the battery is less than or equal to a preset level. I can.

A method of controlling an electronic device according to an exemplary embodiment of the present disclosure includes driving a sensor using wireless power received from a wireless power supply device, and while the sensor is driven in a power saving mode, by energy harvesting. When a detection signal for a user is received from an external sensor that senses a user using the obtained power, driving the sensor in an operation mode to detect the user.

Here, the control method of the present disclosure controls the sensor to perform a detection operation in a first cycle when the sensor is driven in the power saving mode, and performs the detection operation in a second cycle shorter than the first cycle when the sensor is driven in the operation mode. It may further include controlling the sensor to be.

Meanwhile, the control method of the present disclosure further includes the step of detecting a user existing indoors by driving a sensor, and the external sensor may be located outdoors to detect a user entering the room.

Meanwhile, the control method of the present disclosure may further include transmitting a signal for stopping the detection operation of the external sensor to the external sensor when a detection signal is received from the external sensor.

Meanwhile, the control method of the present disclosure may further include transmitting a signal indicating that the user has been detected to an external server when a user is detected by a sensor driven in an operation mode.

Meanwhile, the control method of the present disclosure transmits a signal indicating that the user has not been detected to an external sensor when a user is not detected for more than a preset time by a sensor driven in the operation mode, and drives the sensor in a power saving mode. It may further include a step.

Meanwhile, in the control method of the present disclosure, when the power level charged in the battery included in the electronic device is less than or equal to a preset level, transmitting a signal for requesting transmission of wireless power through the wireless power interface to the wireless power supply device. It may contain more.

According to various embodiments of the present disclosure as described above, an electronic device capable of detecting a user using an external sensor that converts external energy into electrical energy through energy harvesting and a control method thereof may be provided.

In addition, it is possible to provide an electronic device capable of driving using wireless power and reducing power consumption by using an external sensor, and a control method thereof.

In addition, space constraints and costs in which the electronic device is to be installed may be reduced, and energy efficiency may be improved.

1 is a diagram for describing a system according to an embodiment of the present disclosure.

2 is a block diagram of an electronic device according to an embodiment of the present disclosure.

3 is a diagram for describing an electronic device according to an embodiment of the present disclosure.

4A is a diagram illustrating a method of transmitting wireless power according to an embodiment of the present disclosure.

4B is a diagram illustrating a method of transmitting wireless power according to an embodiment of the present disclosure.

4C is a diagram illustrating a method of transmitting wireless power according to an embodiment of the present disclosure.

5 is a sequence diagram for explaining an embodiment of the present disclosure.

6 is a sequence diagram illustrating an embodiment of the present disclosure.

7 is a detailed block diagram illustrating a configuration of an electronic device according to an embodiment of the present disclosure.

8 is a diagram for describing a flowchart according to an embodiment of the present disclosure.

In describing the present disclosure, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present disclosure, a detailed description thereof will be omitted. In addition, the following embodiments may be modified in various other forms, and the scope of the technical idea of the present disclosure is not limited to the following embodiments. Rather, these embodiments are provided to make the present disclosure more faithful and complete, and to completely convey the technical idea of the present disclosure to those skilled in the art.

It should be understood that the techniques described in the present disclosure are not intended to be limited to specific embodiments, and include various modifications, equivalents, and/or alternatives of the embodiments of the disclosure. In connection with the description of the drawings, similar reference numerals may be used for similar elements.

Expressions such as "first," "second," "first," or "second," used in the present disclosure may modify various elements, regardless of order and/or importance, and one element It is used to distinguish it from other components and does not limit the above components.

In the present disclosure, expressions such as "A or B," "at least one of A or/and B," or "one or more of A or/and B" may include all possible combinations of items listed together . For example, "A or B," "at least one of A and B," or "at least one of A or B" includes (1) at least one A, (2) at least one B, Or (3) it may refer to all cases including both at least one A and at least one B.

In the present disclosure, expressions in the singular include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "comprise" are intended to designate the existence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other It is to be understood that the presence or addition of features, numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of being excluded.

Some component (eg, a first component) is "(functionally or communicatively) coupled with/to)" to another component (eg, a second component) or " When referred to as "connected to", it should be understood that the certain component may be directly connected to the other component or may be connected through another component (eg, a third component). On the other hand, when a component (eg, a first component) is referred to as being “directly connected” or “directly connected” to another component (eg, a second component), the component and the It may be understood that no other component (eg, a third component) exists between the different components.

The expression "configured to (configured to)" used in the present disclosure is, for example, "suitable for," "having the capacity to" depending on the situation. ," "designed to," "adapted to," "made to," or "capable of." The term "configured to (or set)" may not necessarily mean only "specifically designed to" in hardware. Instead, in some situations, the expression "a device configured to" may mean that the device "can" along with other devices or parts. For example, the phrase “a processor configured (or configured) to perform A, B, and C” means a dedicated processor (eg, an embedded processor) for performing the operation, or by executing one or more software programs stored in a memory device. , May mean a generic-purpose processor (eg, a CPU or an application processor) capable of performing the above operations.

Electronic devices according to various embodiments of the present disclosure include, for example, a smartphone, a tablet personal computer, a mobile phone, a video phone, an e-book reader, Desktop PC (desktop personal computer), laptop PC (laptop personal computer), netbook computer, workstation, server, PDA (personal digital assistant), PMP (portable multimedia player), MP3 player, mobile medical It may include at least one of a device, a camera, or a wearable device. According to various embodiments, the wearable device is an accessory type (e.g., a watch, a ring, a bracelet, an anklet, a necklace, glasses, contact lens, or a head-mounted-device (HMD)), a fabric, or an integrated clothing ( For example, it may include at least one of an electronic clothing), a body-attached type (eg, a skin pad or tattoo), or a living body type (eg, an implantable circuit).

In addition, in some embodiments, the electronic device may be a home appliance. Home appliances include, for example, television, digital video disk (DVD) player, audio, refrigerator, air conditioner, vacuum cleaner, oven, microwave oven, washing machine, air cleaner, set-top box, and home automation control. Panel (home automation control panel), security control panel (security control panel), TV box (e.g. Samsung HomeSync, Apple TV, or Google TV), game console (e.g. Xbox, PlayStation), electronic dictionary , An electronic key, a camcorder, or an electronic frame.

According to another embodiment, the electronic device is a piece of furniture or a building/structure, an electronic board, an electronic signature receiving device, a projector, or various measurement devices (eg : Water, electricity, gas, or radio wave measuring devices, etc.) may be included. In various embodiments, the electronic device may be a combination of one or more of the aforementioned various devices. The electronic device according to some embodiments may be a flexible electronic device. Further, the electronic device according to the exemplary embodiment of the present document is not limited to the above-described devices, and may include a new electronic device according to technological development.

Referring to FIG. 1, a system 1000 according to an embodiment of the present disclosure may include an electronic device 100, an external sensor 200, and a wireless power supply device 300.

The electronic device 100 may receive wireless power from the wireless power supply device 300 and drive (or operate) the electronic device 100 by using the received wireless power. That is, the electronic device 100 may be driven by using the wireless power received from the wireless power supply device 300 as an energy source.

Here, the wireless power supply device 300 may transmit wireless power using one of an inductive power transfer method, a magnetic resonance coupling method, and an electromagnetic wave method, or a combination thereof.

For example, the magnetic induction method may mean transmitting power by using a magnetic induction phenomenon in which a current is induced in a receiving antenna (or coil) by a current flowing through a transmitting antenna (or coil). In addition, the magnetic resonance method may mean transmitting power by using a magnetic resonance phenomenon between the transmitting and receiving antennas that occurs when the resonance frequencies of the transmitting and receiving antennas are matched between several kHz to several tens of MHz. In addition, the electromagnetic wave method may mean transmitting and receiving power by directly transmitting and receiving an electromagnetic wave (RF (Radio Frequency) such as 2.45 GHz or 5.8 GHz), laser, infrared, and ultrasonic waves through an antenna.

To this end, the wireless power supply device 300 may include a wireless power generator (not shown) and a wireless power interface (not shown) (or a wireless power transmitter). In this case, the wireless power generation unit transmits externally supplied power to the electronic device 100 wirelessly using at least one of a magnetic induction method, a magnetic resonance method, and an electromagnetic wave method, or a combination thereof. Light Amplification by the Stimulated Emission of Radiation (LASER), infrared (IR), and ultrasonic waves (Ultrasonic Waves) may be converted into at least one or a combination thereof to generate wireless power. The wireless power interface is a configuration capable of outputting the converted wireless power and transmitting it to the electronic device 100 or an external device, and may be implemented as, for example, an antenna or an inductor (coil).

The electronic device 100 according to an embodiment of the present disclosure as described above may be installed without space restrictions, and installation simplification and cost reduction due to the removal of a cable (or wire) may be achieved. In addition, it is possible to prevent the operation of the electronic device 100 from being stopped due to a cable breakage due to a fire/natural disaster.

Meanwhile, the electronic device 100 may communicate with the external sensor 200 with each other. For example, the electronic device 100 communicates with the external sensor 200 through a device to device (D2D) communication method using various communication networks, or the electronic device 100 communicates with the external sensor 200 through a server (not shown). Communication with the sensor 200 may be performed. In this way, the electronic device 100 may communicate with the external sensor 200 to transmit and receive various data.

To this end, the electronic device 100 and the external sensor 200 may each include a communication interface. The communication interface may include at least one of a Bluetooth chip, a Wi-Fi chip, a wireless communication chip and an NFC chip for performing wireless communication, an Ethernet module for performing wired communication, and a USB module. In this case, the Ethernet module and the USB module performing wired communication may communicate with an external device through an input/output port.

In this case, the electronic device 100 and the external sensor 200 may be located in different places. For example, when classified into indoor and outdoor based on a specific space 20 (eg, house, vehicle, etc.), the electronic device 100 may be located indoors and the external sensor 200 may be located outdoors. .

The external sensor 200 is located outdoors and may detect the user 30 entering the indoor when the user 30 enters the indoor from the outdoor. For example, the external sensor 200 is located near the door 10 that can be accessed from the outside to the room, and can detect the movement of the user 30 or the opening and closing of the door 10, and the user 30 When) moves in the direction in which the interior is located or when the door 10 is opened is detected, it may be determined that the user 30 enters the interior. Here, the user 30 is an administrator with all control authority for the electronic device 100 of the present disclosure, a user with specific authority for the electronic device 100, or a control authority for the electronic device 100 It may include guests (or outsiders) who do not have this.

To this end, the external sensor 200 may include at least one of a laser sensor (not shown), an ultrasonic sensor (not shown), an infrared sensor (not shown), and a camera (not shown), and a sensor 110 to be described later. The description of may be equally applied, and overlapping content will be omitted.

Meanwhile, the external sensor 200 may detect the user 30 by using power obtained by energy harvesting. Here, energy harvesting may mean collecting external energy 40 such as solar energy, kinetic energy, thermal energy, and the like, and converting the collected energy into electric energy using a piezoelectric effect or thermoelectric effect. Meanwhile, in FIG. 1, the external energy 40 shown as sunlight is for convenience of description, and is not limited thereto and may be variously modified.

To this end, the external sensor 200 is a solar cell element in which sunlight is converted into electrical energy, a thermoelectric element in which heat generated by opening and closing the door is converted into electrical energy, and the user 30 passes through the door 10. In this case, it may include at least one of a piezoelectric element that generates electrical energy according to a pressure applied to the floor of the door 10, a friction element in which a friction force generated by opening and closing the door is changed into electrical energy. In this case, each element may include a circuit.

When the user 30 is detected, the external sensor 200 may transmit a detection signal for the user to the electronic device 100.

Meanwhile, while the electronic device 100 is driven in the power saving mode, when a detection signal for the user 30 is received from the external sensor 200, the electronic device 100 is driven in the operation mode to detect the user 30. can do. In this case, the electronic device 100 may perform an operation according to a power saving mode or an operation mode, and the power saving mode may mean a state in which less power consumption is consumed than the operation mode. When the user 30 is detected, the electronic device 100 may provide a security service (or safety service) by transmitting a signal indicating that the user 30 is detected to an external server.

In this way, the electronic device 100 driven by using wireless power uses the external sensor 200 that is driven by converting external energy into electrical energy through energy harvesting without a separate power supply source. A service that can be detected may be provided, and the electronic device 100 may reduce power consumption as the external sensor 200 changes from a power saving mode to an operation mode when the external sensor 200 detects the user 30 entering the room. have.

Referring to FIG. 2, an electronic device 100 according to an embodiment of the present disclosure includes a sensor 110, a communication interface 120, a wireless power interface 130, and a processor 140.

The sensor 110 is a component for detecting the user 30, and specifically, the sensor 110 may detect the user 30 existing in the room. In this case, the electronic device 100 of the present disclosure may be located indoors.

To this end, the sensor 110 may be implemented as one of a laser sensor (not shown), an ultrasonic sensor (not shown), an infrared sensor (not shown), and a camera (not shown), or a combination thereof.

As an embodiment, the laser sensor detects the user 30 by radiating a laser from the transmitter, receiving a signal returned from the receiver, and measuring the intensity, time, and absorption difference according to the wavelength, and the wavelength shift of the received signal. can do.

As another embodiment, the laser sensor may detect whether the user 30 is present at a specific location according to whether the detection unit receives a detection laser. For example, when the laser sensor receives the detection laser from the receiver (that is, when the detection laser emitted from the transmitter reaches the receiver), the user 30 does not exist in a specific location (eg, indoors). If the detection laser is not received by the receiver (ie, the detection laser emitted from the transmitter is blocked by the user 30), it is determined that the user 30 exists in a specific location. can do.

The ultrasonic sensor emits an ultrasonic pulse having a frequency of 20 kHz or more, receives a signal reflected from an object, and measures a time difference between the radiation and the received signal, thereby detecting whether the user 30 is in a specific position. have.

The infrared sensor receives radiant energy (infrared rays) emitted by the user 30 (passive type), or emits infrared rays having a wavelength of about 750 nm to 1500 nm, and receives a signal reflected by the object and returned (active type), By measuring the strength of the received signal, it is possible to detect whether the user 30 exists in a specific location.

When the light that has passed through the lens and a plurality of color filters (e.g., color filters classified by R (Red), G (Green), B (Blue)) is detected through an image sensor, a specific R, G, B A pixel (or an image that is a set of a plurality of pixels) having a color and grayscale in which the color values of are combined may be obtained. The external sensor 200 recognizes the object (or movement of the object) included in the image captured by the camera using various image analysis algorithms (or artificial intelligence models, etc.), so that the user 30 Whether it exists or not can be detected.

On the other hand, unlike the above description, the sensor 110 simply performs an operation of obtaining information, and the processor 140 determines whether the user 30 exists in a specific location based on the information acquired through the sensor 110. You can also judge whether or not.

The communication interface 120 is a component capable of transmitting and receiving various data (or signals) by performing communication with various types of external devices according to various types of communication methods, and may include a circuit. In particular, the communication interface 120 communicates with various external devices such as the external sensor 200 or an external server under the control of the processor 140 to transmit and receive various data (eg, sensed information or control signals). can do.

To this end, the communication interface 120 includes a WiFi (Wireless Fidelity) chip (not shown), a Bluetooth chip (not shown), a wireless communication chip (not shown), and a Near Field Communication (NFC) chip (not shown). ) May include at least one of various circuits for performing wireless communication. In this case, the Wi-Fi chip, the Bluetooth chip, and the NFC chip may perform communication using a Wi-Fi method, a Bluetooth method, and an NFC method, respectively. In the case of using a Wi-Fi chip or a Bluetooth chip, various types of connection information such as a service set identifier (SSID) and a session key are first transmitted and received, and various types of information can be transmitted and received after a communication connection (eg, pairing). The wireless communication chip is a chip that performs communication according to at least one of various communication standards such as IEEE, Zigbee, 3rd Generation (3G), 3rd Generation Partnership Project (3GPP), Long Term Evolution (LTE), and 5th Generation (5G). it means. The NFC chip refers to a chip that operates in a Near Field Communication (NFC) method using a 13.56 MHz band among various RF-ID frequency bands such as 135 kHz, 13.56 MHz, 433 MHz, 860 to 960 MHz, and 2.45 GHz.

Meanwhile, the communication interface 120 includes Ethernet, optical network, Universal Serial Bus (USB), High Definition Multimedia Interface (HDMI), Recommended Standard232 (RS-232), power line communication, and Plain Old (POTS). Telephone Service), of course, may be operated in a wired communication method including at least one circuit.

The wireless power interface 130 (or wireless power receiver) is a component that receives wireless power from the wireless power supply device 300 and may include a circuit. To this end, the wireless power interface 130 may be implemented as an antenna or an inductor (coil) according to one of a magnetic induction method, a magnetic resonance method, and an electromagnetic wave method, or a combination thereof.

In addition, when a detection signal is received from the wireless power supply device 300, the wireless power interface 130 may output a feedback signal based on the direction of the received detection signal. For example, the wireless power interface 130 may transmit the feedback signal to the wireless power supply device 300 along the same path as the path through which the detection signal traveled by outputting a feedback signal in a direction opposite to the direction in which the detection signal was received. have.

The processor 140 controls the overall operation of the electronic device 100, controls a signal flow between internal components of the electronic device 100, and processes data. Specifically, the processor 140 may control various hardware or software components included in the electronic device 100 and perform various data processing and operations. In addition, the processor 140 may load and process commands or data received from at least one of the other components into a memory and store various data in the memory. To this end, the processor 140 is implemented as a dedicated processor (eg, an embedded processor) for performing the corresponding operation, or a general-purpose processor capable of performing the corresponding operations by executing one or more software programs stored in the memory device ( Generic-purpose processor) (eg, CPU or application processor) can be implemented.

The processor 140 may drive the sensor 110 using wireless power received from the wireless power supply device 300 through the wireless power interface 130. In this case, the wireless power may be received from the wireless power supply device 300 in a method according to one of a magnetic induction method, a magnetic resonance method, an electromagnetic wave method, or a combination thereof.

To this end, the processor 140 may control the wireless power interface 130 to transmit a signal for requesting transmission of wireless power to the wireless power supply device 300. In this case, the signal for requesting transmission of wireless power may include information on at least one of an amount of wireless power required to drive the electronic device 100 or the sensor 110, a resonance frequency, and an output level of wireless power. .

When wireless power is received from the wireless power supply device 300 through the wireless power interface 130, the processor 140 may use the received wireless power as an energy source to drive the sensor 110.

As an embodiment, the electronic device 100 of the present disclosure may further include a battery (not shown). In this case, the battery may be charged with wireless power received from the wireless power supply device 300 through the wireless power interface 130, and the processor 140 uses the charged power to be used for the sensor 110 or the electronic device ( 100) can be controlled to drive.

To this end, the battery is a secondary battery capable of storing (charging) and using (discharging) electrical energy, and includes a lithium ion (Li Ion) battery, a nickel-cadmium battery, a nickel-hydrogen (NiMH) battery, and a lithium battery. It may be implemented by one of an ion polymer battery, a lead storage battery, a silicon battery, a carbon nanotube, graphene, or a combination thereof.

Here, when the power level charged in the battery is less than or equal to a preset level, the processor 140 may transmit a signal for requesting transmission of wireless power to the wireless power supply device 300 through the wireless power interface 130. .

On the other hand, unlike the above description, the processor 140 may control the communication interface 120 to transmit a signal for requesting transmission of wireless power to the wireless power supply device 300. To this end, the wireless power supply device In order to perform communication with the electronic device 100, the 300 may separately include a communication interface.

As an embodiment, when the user 30 is detected by the sensor 110, the processor 140 controls the communication interface 120 to transmit a signal indicating that the user 30 has been detected to an external server (not shown). can do.

In this case, the external server is an external electronic device capable of performing various types of communication, and by performing communication with the electronic device 100, the user (e.g., a family member, guardian, security personnel, etc.) 30) is an external electronic device to provide information that exists. To this end, the external server may include a communication interface (not shown), and the description of the communication interface 120 of the electronic device 100 may be the same.

Here, the external server may be implemented as a single server capable of performing (or processing) various functions, or a server system composed of a plurality of servers designed to be performed (or processed) by sharing the functions. For example, an external server is a cloud server that provides IT (Information Technology) resources virtualized through the Internet as a service, or a method that processes data in real time at a distance close to the location where the data is generated to simplify the data path. It can be implemented as an edge server or a combination of them.

When a signal indicating that the user 30 is detected from the electronic device 100 is received, the external server repeatedly outputs an alarm (notification information or dispatch request information, etc.) on the display or speaker of the external server based on the received signal. Information that the user 30 exists in a specific space 20 can be provided to the manager by transmitting it to the manager's terminal device (eg, a smartphone, etc.). Thereafter, the external server or the terminal device of the administrator may check the user 30 through the alarm information and release the alarm.

Meanwhile, when the user 30 is detected by the sensor 110, the processor 140 may control the external sensor 200 to be driven in a power saving mode as follows. To this end, when the user 30 is detected by the sensor 110, the processor 140 controls the communication interface 120 to transmit a user detection signal indicating that the user 30 is detected to the external sensor 200. May be. In this case, the power saving mode may be equally applied according to the description of the power saving mode of the sensor 110 to be described later.

Meanwhile, the processor 140 may control the sensor 110 to be driven in a power saving mode or an operation mode. Here, the operation mode refers to a general state in which the sensor 110 detects the user 30 existing indoors, and the power saving mode consumes less power than when the sensor 110 is in the operation mode. It can mean a state of being. In this case, the processor 140 may preferentially control the sensor 110 to be driven in a preset mode (either a power saving mode or an operation mode). In this case, the preset mode may be changed by the processor 140 or an administrator.

As an embodiment, when the sensor 110 is driven in a power saving mode, the processor 140 controls the sensor 110 to perform a sensing operation in a first cycle, and when the sensor 110 is driven in an operation mode, The sensor 110 may be controlled to perform the sensing operation in a second period shorter than the first period.

For example, when the sensor 110 is driven in a power saving mode, the processor 140 controls the sensor 110 to perform an operation of detecting the user 30 existing indoors once every 5 seconds, and the processor When the sensor 110 is driven in the operation mode, the 140 may control the sensor 110 to perform an operation of detecting the user 30 existing indoors once a second.

Meanwhile, the processor 140 may drive the sensor 110 in the changed mode by changing a preset mode as a preset event occurs. At this time, the preset event is an event of receiving a detection signal for the user 30 from the external sensor 200, an event in which the user 30 is not detected for more than a preset time by the sensor 110, and the power charged in the battery. It may include an event whose level is less than or equal to a preset level.

As an embodiment, the processor 140 detects the user 30 by using the power obtained by energy harvesting while the sensor 110 is driven in the power saving mode. When a detection signal for is received through the communication interface 120, the sensor 110 may be driven in an operation mode to detect the user 30.

For example, referring to FIG. 5, the external sensor 200 may receive harvesting power by energy harvesting (S511), and detect a user 30 entering an indoor using the harvesting power ( S517). At this time, the processor 140 receives wireless power from the wireless power supply device 300 through the wireless power interface 130 (S513), and controls the sensor 110 to detect a user existing indoors using the wireless power. can do.

While the sensor 110 is driven in the power saving mode (S515), when a detection signal for the user 30 from the external sensor 200 is received through the communication interface 120 (S519), the sensor ( 110) may be controlled to be driven in an operation mode (S521).

In this case, when a detection signal is received from the external sensor 200, the processor 140 controls the communication interface 120 to transmit a signal for stopping the detection operation of the external sensor 200 to the external sensor 200. I can.

For example, when a detection signal for the user 30 from the external sensor 200 is received through the communication interface 120, the processor 140 transmits a signal for stopping the detection operation of the external sensor 200 to the external sensor. It may be transmitted to 200, and the external sensor 200 may stop the sensing operation according to the received signal. Even in this case, the external sensor 200 may periodically perform an operation of receiving harvesting power by energy harvesting.

On the other hand, unlike the above-described embodiment, instead of stopping the sensing operation of the external sensor 200, it is also possible to perform the transformation so as to increase the period in which the sensing operation is performed.

As an embodiment, when the user 30 is not detected for more than a preset time by the sensor 110 driven in the operation mode, the processor 140 may drive the sensor 110 in the power saving mode. In this case, the preset time may be set or changed by the administrator, and for example, the preset time may be set to one of various times such as 10 minutes, 30 minutes, and 1 hour.

In this case, the processor 140 may control the communication interface 120 to transmit a signal indicating that the user 30 has not been detected to the external sensor 200.

For example, referring to FIG. 6, when the user 30 is not detected for more than a preset time by the sensor 110 driven in the operation mode (S621), the sensor 110 is in a power saving mode. It can be driven by (S631).

In addition, when the user 30 is not detected for more than a preset time by the sensor 110 driven in the operation mode (S621), the processor 140 transmits a signal indicating that the user 30 is not detected by an external sensor. The communication interface 120 may be controlled to transmit to 200 (S623), and accordingly, the external sensor 200 may be controlled to resume the operation of detecting the user's 30 entering the room (S641).

As an embodiment, the processor 140 may change the mode of the sensor 110 according to the power level charged in the battery and control the sensor 110 to be driven according to the changed mode. For example, assuming that the power level charged in the battery is 100% in the fully charged state, when the power level charged in the battery is between 100% and 50%, the sensor 110 is driven in the operation mode, and is less than 50%. In some cases, the sensor 110 may be driven in a power saving mode.

In addition, the processor 140 may change a period in which the sensor 110 performs a sensing operation even in the power saving mode. For example, when the power level charged in the battery is 25% and when the power level is 15%, both may be driven in a power saving mode, but may be driven differently according to the power level charged in the battery. That is, in the case of 25%, the sensor 110 is driven in the first power saving mode to perform a detection operation once every 5 seconds, and in the case of 10%, the sensor 110 is driven to perform a detection operation once every 10 seconds. I can. However, this is only an example, and the period in which the operation is performed may be variously modified and implemented.

Referring to FIG. 3, as an embodiment of the present disclosure, each of the plurality of electronic devices 100-1, 100-2, and 100-3 is configured as an electronic device having the same configuration as the electronic device 100 described above. In addition, each of the plurality of external sensors 200-1 and 200-2 may be composed of an external sensor having the same configuration as the external sensor 200 described above.

In this case, each of the plurality of electronic devices 100-1, 100-2, and 100-3 has different internal spaces of the specific space 20 in order to detect whether the user 30 is present at different locations. It exists in the location and may drive the sensor using the wireless power received from the wireless power supply device 300.

Hereinafter, it is assumed that each of the plurality of electronic devices 100-1, 100-2 and 100-3 is driven in a power saving mode, and that the user 30 enters the room from the outdoors and exists at the location shown in FIG. 3. Do it.

The plurality of external sensors 200-1 and 200-2 are located outdoors, detect the user 30 entering the indoor, and use the plurality of electronic devices 100-1, 100-2 and 100-3 respectively. A detection signal that detects the user 30 may be transmitted.

In this case, while each of the plurality of electronic devices 100-1, 100-2, and 100-3 is driven in the power saving mode, the plurality of electronic devices 200-1 and 200-2 enter the room from at least one of the plurality of external sensors 200-1 and 200-2. When a detection signal that detects the user 30 is received, the sensor may be driven in an operation mode.

In addition, the electronic device 100-1 that detects the user 30 existing indoors by driving a sensor among the plurality of electronic devices 100-1, 100-2, and 100-3 indicates that the user 30 is detected. The indicated signal can be transmitted to an external server. In addition, among the plurality of electronic devices 100-1, 100-2, 100-3, electronic devices 100-2, 100-3 in which the user 30 is not detected for more than a preset time by a sensor driven in an operation mode. ) May drive the sensor in a power saving mode and transmit a signal indicating that the user 30 is not detected to an external server.

In this case, the external server may provide the administrator with information that the user 30 exists near the location where the electronic device 100-1 is installed, based on the received signal.

Meanwhile, the electronic device 100-1 may transmit a signal indicating that the user 30 is detected to the external sensors 200-1 and 200-2, and the electronic device 100-2 and 100-3 may transmit a signal indicating that the user 30 is detected. A signal indicating that 30) is not detected may be transmitted to the external sensors 200-1 and 200-2.

In this case, the external sensors 200-1 and 200-2 determine whether the user 30 exists indoors based on the received signal, and stop the detection operation when the user 30 exists indoors. And, if the user 30 does not exist indoors, the detection operation may be resumed. For example, the external sensors 200-1 and 200-2 receive a signal indicating that the user 30 is not detected from all of the plurality of electronic devices 100-1, 100-2, and 100-3. In this case, it may be determined that the user 30 does not exist indoors, and a signal indicating that the user 30 has been detected from at least one of the plurality of electronic devices 100-1, 100-2, and 100-3 When received, it may be determined that the user 30 exists indoors.

Hereinafter, as an embodiment of the present disclosure, a method of receiving wireless power by avoiding a human body from the wireless power supply device 300 by the electronic device 100 will be described with reference to FIGS. 4A to 4C.

Referring to FIG. 4A, the wireless power supply device 300 may output (or radiate) detection signals in all directions to determine the location of the electronic device 100. In this case, the detection signal is a signal having straightness, and may be a signal having the same type as the wireless power and having an output level lower than that of the wireless power harmless to human body. For example, the detection signal may be at least one of electromotive force, electromagnetic waves, laser, infrared, light, and sound waves, or a combination thereof. However, this is only an example, and of course, the detection signal may be variously modified and implemented as a type different from the wireless power.

In this case, some of the output detection signals reach the electronic device 100 directly when there is no obstacle, or some of the output detection signals excluding signals blocked by obstacles such as the user 30 are caused by objects such as walls. It may be reflected and reach the electronic device 100. Further, when a detection signal is received through the wireless power interface 130, the processor 140 of the electronic device 100 may determine the direction of the received detection signal.

Next, referring to FIG. 4B, the processor 140 of the electronic device 100 may control the wireless power interface 130 to output a feedback signal based on the direction of the received detection signal. In this case, the feedback signal is a signal having linearity and may be a signal of the same type as the detection signal.

In this case, the feedback signal output through the wireless power interface 130 may be transmitted to the wireless power supply device 300 along the same path in a direction opposite to the detection signal. In addition, when the feedback signal is received, the wireless power supply device 300 may determine the direction of the received feedback signal.

Next, referring to FIG. 4C, the wireless power supply device 300 transmits (or transmits) wireless power in a direction opposite to the direction of the received feedback signal, based on the direction of the received feedback signal, so that the electronic device 100 ) To deliver wireless power.

According to the embodiment of the present disclosure as described above, the electronic device 100 may receive wireless power by avoiding the human body, and thus, it is possible to prevent the wireless power transmission from having a harmful effect on the human body.

Referring to FIG. 7, in the electronic device 100 according to an embodiment of the present disclosure, in addition to the sensor 110, the communication interface 120, the wireless power interface 130 and the processor 140, a memory 150, an output At least one of the interface 160 and the input interface 170 may be further included.

The processor 140 may include a RAM (not shown), a ROM (not shown), a graphic processing unit (not shown), a main CPU (not shown), first to n interfaces (not shown), and a bus (not shown). have. In this case, RAM, ROM, graphic processing unit, main CPU, first to n interfaces, etc. may be connected to each other through a bus.

Various instructions, programs, or data necessary for the operation of the electronic device 100 or the processor 140 may be stored in the memory 150. For example, the memory 150 may store information obtained by the sensor 110 and data received from an external electronic device (not shown).

The memory 150 may be implemented as a non-volatile memory, a volatile memory, a flash-memory, a hard disk drive (HDD), a solid state drive (SSD), or the like. The memory 150 is accessed by the processor 140, and data read/write/modify/delete/update data by the processor 140 may be performed. The term memory in the present disclosure is a memory 150, a RAM (not shown) in the processor 140, a ROM (not shown), or a memory card (not shown) mounted in the electronic device 100 (eg, micro SD Cards, memory sticks, etc.).

The output interface 160 is a component for outputting information, and may include at least one circuit. In this case, the output information may be implemented in a form such as an image or audio.

For example, the output interface 160 may include a display (not shown) and a speaker (not shown). The display may display image data processed by an image processing unit (not shown) on a display area (or display). The display area may mean at least a part of the display exposed on one surface of the housing of the electronic device 100. At least a portion of the display may be coupled to at least one of a front area, a side area, and a rear area of the electronic device 100 in the form of a flexible display. The flexible display may be characterized in that it can be bent, bent, or rolled without damage through a paper-thin and flexible substrate. The speaker is built into the electronic device 100 and can directly output various notification sounds or voice messages as well as various audio data on which various processing tasks such as decoding, amplification, and noise filtering are performed by an audio processing unit (not shown). I can.

The input interface 170 may receive various types of user commands and transmit them to the processor 130.

The input interface 170 may include, for example, a touch panel, a (digital) pen sensor, or a key. The touch panel may use at least one of, for example, a capacitive type, a pressure sensitive type, an infrared type, or an ultrasonic type. Also, the touch panel may further include a control circuit. The touch panel may further include a tactile layer to provide a tactile reaction to the user 30. The (digital) pen sensor may be, for example, a part of the touch panel or may include a separate recognition sheet. The keys may include, for example, physical buttons, optical keys or keypads. Alternatively, the input interface 170 may be wired or wirelessly connected from an external device (not shown) such as a keyboard or a mouse to receive a user input.

The input interface 170 may include a microphone capable of receiving a voice from the user 30. The microphone may be embedded in the electronic device 100 or implemented as an external device to be connected to the electronic device 100 by wire or wirelessly. The microphone may directly receive the voice of the user 30, and may obtain an audio signal by digitally converting the voice of the user 30, which is an analog signal, by a digital converter (not shown).

Meanwhile, the electronic device 100 may further include an input/output port (not shown).

The input/output port (not shown) is the electronic device 100 and the external device (not shown) so that the electronic device 100 can transmit and/or receive signals for images and/or audio with an external device (not shown). It is a configuration that connects with a wire.

To this end, the input/output port (not shown) may be implemented as a wired port such as an HDMI port, a display port, an RGB port, a Digital Visual Interface (DVI) port, a Thunderbolt, and a component port.

For example, so that the electronic device 100 can output an image and/or sound, the electronic device 100 transmits an image and/or sound signal from an external device (not shown) through an input/output port (not shown). Can receive. As another example, so that an external device (not shown) can output an image and/or audio, the electronic device 100 transmits a signal for a specific image and/or audio to the external device through an input/output port (not shown). I can.

In this way, signals for images and/or audio may be transmitted in one direction through an input/output port (not shown). However, this is only an exemplary embodiment, and of course, signals for images and/or audio may be transmitted in both directions through an input/output port (not shown).

Referring to FIG. 8, the control method of the electronic device 100 according to an embodiment of the present disclosure includes driving the sensor 110 using wireless power received from the wireless power supply device 300 and the sensor 110 While) is driven in the power saving mode, when a detection signal for the user 30 is received from the external sensor 200 that senses the user 30 by using the power obtained by energy harvesting, the user And driving the sensor 110 in an operation mode to detect 30.

First, the sensor 110 may be driven by using the wireless power received from the wireless power supply device 300 (S810).

Here, when the sensor 110 is driven in the power saving mode, the sensor 110 is controlled to perform a detection operation in the first cycle, and when the sensor 110 is driven in the operation mode, the sensor 110 is detected in a second cycle shorter than the first cycle. The sensor 110 can be controlled to perform an operation. Meanwhile, when the user 30 is not detected for more than a preset time by the sensor 110 driven in the operation mode, the sensor 110 may be driven in the power saving mode. In this case, a signal indicating that the user 30 has not been detected may be transmitted to the external sensor 200.

Here, the sensor 110 may be driven to detect the user 30 present in the room. In this case, when the user 30 is detected by the sensor 110 driven in the operation mode, a signal indicating that the user 30 is detected may be transmitted to an external server.

And, while the sensor 110 is driven in the power saving mode, a detection signal for the user 30 from the external sensor 200 that detects the user 30 by using the power obtained by energy harvesting (energy harvesting) When is received, the sensor 110 may be driven in an operation mode to detect the user 30 (S820).

In this case, the external sensor 200 may be located outdoors and detect the user 30 entering the indoor. Here, when a detection signal is received from the external sensor 200, a signal for stopping the detection operation of the external sensor 200 may be transmitted to the external sensor 200.

Meanwhile, when the power level charged in the battery included in the electronic device 100 is less than or equal to a preset level, a signal for requesting transmission of wireless power may be transmitted to the wireless power supply device 300.

Various embodiments of the present disclosure may be implemented with software including instructions stored in a machine-readable storage medium (eg, a computer). The device calls instructions stored from the storage medium. And, as a device capable of operating according to a called command, it may include an electronic device (eg, the electronic device 100) according to the disclosed embodiments. Under the control of the processor, other components may be used to perform the functions described above in the command, which may include code generated or executed by a compiler or an interpreter, and a storage medium readable by a device is non-transitory. (non-transitory) It may be provided in the form of a storage medium, where'non-transitory' means that the storage medium does not contain a signal and is tangible, but the data is semi-permanent or temporary in the storage medium. It does not distinguish that it is stored as.

The method according to various embodiments may be provided by being included in a computer program product. Computer program products can be traded between sellers and buyers as commodities. The computer program product may be distributed online in the form of a device-readable storage medium (eg, compact disc read only memory (CD-ROM)) or through an application store (eg, Play StoreTM). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a storage medium such as a server of a manufacturer, a server of an application store, or a memory of a relay server.

Each of the constituent elements (eg, a module or a program) according to various embodiments may be composed of a singular or a plurality of entities, and some sub-elements of the aforementioned sub-elements may be omitted, It may be further included in the embodiment. Alternatively or additionally, some constituent elements (eg, a module or a program) may be integrated into a single entity to perform the same or similar functions performed by each of the constituent elements prior to the consolidation. Operations performed by modules, programs, or other components according to various embodiments may be sequentially, parallel, repetitively or heuristically executed, or at least some operations may be executed in a different order, omitted, or other operations may be added. I can.

Claims

In the electronic device,

sensor;

A communication interface including circuitry;

A wireless power interface including circuitry; And

Driving the sensor using wireless power received from a wireless power supply device through the wireless power interface,

While the sensor is driven in the power saving mode, when a detection signal for the user is received through the communication interface from an external sensor that senses the user using power obtained by energy harvesting, the user is And a processor that drives the sensor in an operation mode to detect.
The method of claim 1,

The processor,

When the sensor is driven in the power saving mode, the sensor is controlled to perform a sensing operation in a first period, and when the sensor is driven in the operation mode, the sensing operation is performed in a second period shorter than the first period Controlling the sensor to be performed.
The method of claim 1,

The sensor detects a user existing indoors,

The external sensor, located outdoors, to detect a user entering the indoor, electronic device.
The method of claim 1,

The processor,

When the detection signal is received from the external sensor, transmitting a signal for stopping the detection operation of the external sensor to the external sensor.
The method of claim 1,

The processor,

When the user is detected by the sensor driven in the operation mode, transmitting a signal indicating that the user is detected to an external server.
The method of claim 1,

The processor,

When the user is not detected for more than a preset time by the sensor driven in the operation mode, transmitting a signal indicating that the user has not been detected to the external sensor, and driving the sensor in the power saving mode, Electronic device.
The method of claim 1,

Including a battery;

The processor,

When the power level charged in the battery is less than or equal to a preset level, transmitting a signal for requesting transmission of the wireless power to the wireless power supply device through the wireless power interface.
In the control method of an electronic device including a sensor,

Driving the sensor using wireless power received from a wireless power supply device; And

While the sensor is driven in the power saving mode, when a detection signal for the user is received from an external sensor that senses the user by using power obtained by energy harvesting, the sensor to detect the user Driving the operation mode; comprising, a control method.
The method of claim 8,

When the sensor is driven in the power saving mode, the sensor is controlled to perform a sensing operation in a first period, and when the sensor is driven in the operation mode, the sensing operation is performed in a second period shorter than the first period Controlling the sensor to be; characterized in that it further comprises, the control method.
The method of claim 8,

Driving the sensor to detect a user existing in the room; further comprising,

The external sensor, characterized in that for detecting a user who enters the indoor by being located outdoors.
The method of claim 8,

When the detection signal is received from the external sensor, transmitting a signal for stopping the detection operation of the external sensor to the external sensor; characterized in that the control method further comprises.
The method of claim 8,

When the user is detected by the sensor driven in the operation mode, transmitting a signal indicating that the user has been detected to an external server; and further comprising a.
The method of claim 8,

When the user is not detected for more than a preset time by the sensor driven in the operation mode, transmitting a signal indicating that the user has not been detected to the external sensor, and driving the sensor in the power saving mode It characterized in that it further comprises; control method.
The method of claim 8,

When the power level charged in the battery included in the electronic device is less than or equal to a preset level, transmitting a signal for requesting transmission of the wireless power to the wireless power supply device through the wireless power interface; Characterized in that, the control method.