JP6632189B2 - Information processing device, wireless power transmission device, control method, and program - Google Patents

Description

  The present invention relates to security when performing wireless power transmission.

  2. Description of the Related Art Conventionally, a wireless power transmission system including a power transmitting device that wirelessly transmits power and a power receiving device that receives power supplied from the power transmitting device has been known. In addition, there is a technology that issues a warning when the first device and the second device are separated from each other by a predetermined distance or more in order to prevent the device from being lost (Patent Document 1).

JP 2008-146640 A

  There is a concern that the power receiving device may be carried away by a third party during wireless power transmission. However, the user is not always near the power receiving device and the power transmitting device, and the user may not be able to recognize that the power receiving device and the power transmitting device have separated. Therefore, there is room for improvement in security technology for wireless power transmission from the viewpoint of user convenience.

  The present invention has been made in view of the above-described problem, and has as its object to improve user convenience regarding security during wireless power transmission.

According to one embodiment of the present invention, there is provided an information processing apparatus comprising: a first determination unit configured to determine that a distance from another information processing apparatus is greater than a predetermined distance; A second determining unit that determines that a distance between a processing device and a power transmitting device that wirelessly transmits power to the other information processing device is greater than a predetermined distance; and the other information processing device is determined by the first determining unit. Is determined to be greater than a predetermined distance, and that the second determination unit determines that the distance between the other information processing device and the power transmission device is greater than a predetermined distance. based, and having a notification means for performing a predetermined notification.

  It is possible to improve the user's convenience regarding security during wireless power transmission.

FIG. 1 is a configuration diagram of a wireless power transmission system. FIG. 3 is a diagram illustrating a configuration of a power transmission device. FIG. 2 is a diagram illustrating a configuration of a charging device. It is a figure showing composition of a smart watch. It is a flowchart which shows operation | movement of a smart watch. FIG. 4 is a diagram illustrating a relationship between a positional relationship of each device and a timing of issuing a warning.

  The configuration of the wireless power transmission system according to the present embodiment will be described with reference to FIG. Reference numeral 101 in the figure denotes a power transmission device of the present embodiment. An information processing apparatus 102 is capable of receiving power wirelessly transmitted from the power transmitting apparatus 101, and is a charging device that charges a battery using the received power. The power transmission device 101 and the charging device 102 can also be said to be wireless power transmission devices that perform wireless power transmission. Reference numeral 103 denotes a smart watch that can wirelessly communicate with the power transmission device 101 and / or the charging device 102. The smart watch 103 is one of so-called wearable devices, and is an information processing apparatus on the assumption that the user always operates while wearing it. Note that there may be a plurality of each of the devices shown in FIG.

  Note that the wireless power transmission system according to the present embodiment performs wireless power transmission using a magnetic field resonance method. The magnetic field resonance method is a method of transmitting electric power by coupling of a magnetic field between a resonator (resonance element) of a power transmission device and a resonator (resonance element) of a power reception device. In the present embodiment, a wireless power transmission system using a magnetic field resonance method will be described as an example. However, the wireless power transmission method (contactless power transmission method) is not limited to this, and electromagnetic induction, electric field resonance, A power transmission method using a microwave, a laser, or the like may be used.

  The communication performed between the devices of the wireless power transmission system according to the present embodiment uses communication conforming to the Bluetooth (registered trademark) 4.0 standard. In Bluetooth (registered trademark) 4.0, a communication method called Bluetooth (registered trademark) Low Energy (BLE) that can communicate with relatively low power consumption is specified.

  In the present embodiment, the communication is performed according to the BLE, but may be another communication standard. For example, a wireless LAN (IEEE (The Institute of Electrical and Electronics Engineers, Inc) 802.11 series) may be used. Further, NFC (Near Field Communication), ZIGBEE, or the like may be used. Further, load modulation and communication may be a unique communication method.

  Subsequently, the configuration of each device of the wireless power transmission system will be described. FIG. 2 is a diagram illustrating a configuration of the power transmission device 101 of the wireless power transmission system. In the figure, reference numeral 201 denotes a control unit that controls the power transmission device 101. The control unit 201 is, for example, a CPU (Central Processing Unit), and controls the entire apparatus by the CPU executing a control program stored in a memory 208 described later. Reference numeral 202 denotes a power supply that supplies power when wireless power transmission is performed from the power transmitting apparatus 101. The power supply 202 is a commercial power supply or a battery. Reference numeral 203 denotes a power transmission unit that converts DC or AC power input from the power supply 202 into AC frequency power of a transmission band and generates an electromagnetic wave to be received by the power receiving device via the power transmission antenna 205.

  Reference numeral 204 denotes a user interface (UI) unit that includes, for example, a touch panel and receives various inputs from a user and outputs various information. Note that the UI unit 204 may perform sound notification (a speaker is not shown) or the like.

  Reference numeral 206 denotes a communication unit for communicating with an external device. The communication unit 206 includes a chip for controlling wireless communication conforming to BLE and an antenna for transmitting a signal. Note that the communication unit 206 can measure the distance between the devices by using Find Me Profile (FMP) or ProXimity Profile (PXP) defined in BLE. FMP and PXP are profiles for measuring the distance between devices based on the average level of the received signal level (received electric field strength) in a predetermined period.

  A memory 208 is configured by a storage medium such as an HDD, a flash memory, or a removable SD card, and stores various information.

  The power transmission device 101 is not limited to a device that exclusively performs power transmission, and may be another device, such as a printer or a PC, for example.

  Next, the configuration of the charging device 102 of the wireless power transmission system will be described with reference to FIG. Reference numeral 301 denotes a control unit that controls the charging device 102. The control unit 301 is configured by, for example, a CPU, and controls the entire apparatus by executing a control program stored in the memory 307. The communication unit 306 includes a chip for controlling wireless communication conforming to BLE and an antenna for transmitting a signal. The communication unit 306 can measure the distance between devices using FMP or PXP defined in BLE.

  Reference numeral 305 denotes a power receiving antenna for receiving wireless power transmission from the power transmitting apparatus 101. Reference numeral 303 denotes a power receiving unit that generates power from electromagnetic waves received by the power receiving antenna 305. The power receiving unit 303 generates resonance by an electromagnetic wave received by the power receiving antenna 305, and obtains AC power by the resonance. Then, the power receiving unit 303 rectifies the AC power into DC power or AC power having a desired frequency and outputs the rectified power. A rechargeable battery 302 stores power received by the charging device 102. Reference numeral 304 denotes a detection unit that detects the voltage of the battery 302. Based on the detection result of the detection unit 304, the control unit 301 can detect whether or not the battery 302 is fully charged and detect the state of charge.

  Reference numeral 304 denotes a row UI unit which is configured by, for example, a touch panel and receives various inputs and the like from a user and outputs various information. Note that the UI unit 304 may perform notification by sound (a speaker is not shown) or the like. A memory 307 is configured by a storage medium such as an HDD, a flash memory, or a removable SD card, and stores various information.

  Note that the control unit 301 and the communication unit 306 of the charging device 102 may operate with power transmitted from the power transmission device 101. With this configuration, the charging device 102 can start communication with the power transmission device 101 even when the charging device 102 does not hold power required to start wireless power transmission from the power transmission device 101. Note that an example of the charging device 102 may be a device such as a digital camera or a mobile phone.

  Next, the configuration of the smart watch 103 of the wireless power transmission system will be described with reference to FIG. Reference numeral 401 denotes a control unit that controls the smart watch 103. The control unit 401 is configured by, for example, a CPU, and controls the entire apparatus by executing a control program stored in the storage unit 404. Reference numeral 402 denotes a battery that supplies power to each unit of the smart watch 103. A memory 404 is configured by a storage medium such as an HDD, a flash memory, or a removable SD card, and stores various information.

  The communication unit 406 includes a chip for controlling wireless communication conforming to BLE and an antenna for transmitting a signal. The communication unit 406 can measure the distance between the devices using FMP or PXP defined in BLE. A user interface (UI) unit 403 includes, for example, a touch panel and receives various inputs from a user and outputs various information. Note that the UI unit 403 may perform notification by sound (a speaker is not shown) or the like. Note that the smart watch 103 may be another device such as a digital camera or a mobile phone.

  The operation of the smart watch 103 in the wireless power transmission system having the above configuration will be described. In addition, the security technology at the time of performing wireless power transmission in the present system aims at improving the convenience of the user. For example, when a warning is issued when the device worn by the user and the power receiving device are separated from each other by a predetermined distance or more, a warning is issued even if the user temporarily moves away from the power transmitting device and the power receiving device intentionally. Will be Therefore, if the user is left on the power transmitting device to charge the power receiving device when moving temporarily for a toilet, for example, a warning is issued and the usability is poor. An operation for solving such a problem will be described.

  FIG. 5 is a flowchart illustrating the operation of the smartwatch 103 when the lifting monitoring mode is turned on. Here, the carry-on monitoring mode is an operation mode in which a warning is given when a third person has taken away the charging device 102 while charging the charging device 102 associated with the smartwatch 103. .

  Note that the flowchart illustrated in FIG. 5 is realized by the control unit 401 executing a control program stored in the storage unit 404, performing calculation and processing of information, and controlling each hardware. Note that a configuration in which some or all of the steps illustrated in the flowchart illustrated in FIG. 5 are realized by hardware such as an ASIC (Application Specific Integrated Circuit), for example, may be employed.

  Upon starting the process, the smart watch 103 determines whether the holding monitor mode is turned on by a user operation on the UI unit 403 (S501). If the lifting monitoring mode is not on, the process ends. When ON of the lifting monitoring mode is detected, the communication unit 406 performs wireless connection with the charging device 102. It is assumed that smart watch 103 holds pairing information for connecting to charging device 102 via communication unit 406. Further, the smart watch 103 may be connected to the power transmission apparatus 101 via the communication unit 406. The pairing information with the power transmission device 101 is received by the communication unit 406 from the charging device 102. Note that the charging device 102 is connected to the power transmitting device 101 by the communication unit 306 in order to exchange control information for wireless power transmission with the power transmitting device 101.

  When the wireless connection is established in S501, the smart watch 103 determines whether the charging device 102 has started charging based on whether or not a charging start notification has been received from the charging device 102. The charging start notification is a message for notifying that charging has been started using power transmission from the power transmitting apparatus 101.

  When the smartwatch 103 detects that the charging device 102 has started charging by receiving the charging start notification from the charging device 102 via the communication unit 406, the smartwatch 103 performs a distance determination process between the charging device 102 and the power transmission device 101. (S504).

  The distance measurement processing in S504 is performed based on the received information by the communication unit 406 of the charging device 102 receiving the measurement result of the distance to the power transmitting apparatus 101 by FMP or PXP. Note that the distance measurement process in S504 may be performed based on the received information from the communication unit 406, receiving information indicating whether or not charging is being performed from the charging device 102. That is, when the smartwatch 103 receives information indicating that charging is being performed from the charging device 102, the smartwatch 103 can determine that the charging device 102 is within the power transmission range of the power transmission device 101.

  The smart watch 103 determines whether or not the distance between the charging device 102 and the power transmission device 101 is a predetermined distance, according to the distance determined by the distance measurement processing in S504 (S505). Here, the predetermined distance determined in S505 is 1 m. Further, the predetermined distance may be set in the same manner as the distance in the power transmission range of the power transmission apparatus 101. Further, the predetermined distance determined in S505 may be settable by a user operation.

  If the smart watch 103 determines that the distance between the charging device 102 and the power transmission device 101 is not the predetermined distance, the smart watch 103 waits for a predetermined time and then performs the processing from S504 again.

  If the smartwatch 103 determines that the distance between the charging device 102 and the power transmission device 101 is a predetermined distance, the smartwatch 103 performs a distance determination process of measuring the distance between the smartwatch 103 and the charging device 102 (S506). In the distance determination process of S506, the distance between the smart watch 103 and the charging device 102 is determined based on FMP or PXP communication of the communication unit 406.

  The smart watch 103 determines whether or not the distance between the smart watch 103 and the charging device 102 is a predetermined distance based on the distance determined by the distance measurement processing in S506 (S507). Here, the predetermined distance determined in S507 is 1 m. Further, the predetermined distance determined in S504 may be settable by a user operation.

  When determining that the distance from the charging device 102 is a predetermined distance, the smartwatch 103 determines that the third person has removed the charging device 102, and issues a warning (S508). The warning in S508 is performed by displaying information notifying that the third person has removed the charging device 102. The warning in S508 may be performed by outputting a warning sound. Further, the warning in S508 may be issued by generating vibration. Further, the warning in S508 may be performed by transmitting an instruction to generate a warning sound to the charging device 102 or the power transmitting apparatus 101 by communication by the communication unit 406 of the smart watch 103.

  Upon issuing the warning in S508, the smart watch 103 ends the process. Note that the warning in S508 may be configured to measure the distance between the power transmitting device 101 and the charging device 102, and to end when the distance between the power transmitting device 101 and the charging device 102 is within a predetermined distance. Also, the warning in S508 may be configured to measure the distance between the smartwatch 103 and the charging device 102, and to end when the distance between the smartwatch 103 and the charging device 102 is within a predetermined distance.

  On the other hand, if it is determined in step S507 that the distance from the charging device 102 is not the predetermined distance, the smartwatch 103 determines whether the holding monitoring mode has been turned off (S509). If it is determined in step S507 that the lifting monitoring mode is not OFF, the processing from step S503 is performed again. If the lifting monitoring mode is turned off, the process ends.

  As described above, the smart watch 103 not only determines the distance from the charging device 102 to be held and monitored, but also determines the distance between the power transmitting device 101 and the charging device 102 to generate a warning. By doing so, for example, as shown in FIG. 6A, when the user owns the charging device 102 and moves to a place away from the power transmission device 101, the user himself carries the charging device 102. Can be recognized, it can be determined that there is no need to issue a warning. Therefore, it is possible to reduce unnecessary warnings.

  In addition, for example, as illustrated in FIG. 6B, even when the user of the charging device 102 temporarily puts the charging device 102 on the power transmission device 101 and temporarily separates from the charging device 102 as illustrated in FIG. Do not warn. Therefore, when the charging device 102 is receiving power from the power transmitting device 101, the smart watch 103 can recognize that the third person is not holding the device, and does not issue a warning, so that an unnecessary warning is issued. Can be reduced. In addition, for example, as shown in FIG. 6C, when the user of the charging device 102 puts the charging device 102 on the power transmission device 101 and temporarily separates from the charging device 102, as shown in FIG. When the holding is performed, a warning can be issued promptly.

  As described above, depending on the location of the user of the charging device 102, it is possible to appropriately issue a warning notification regarding the removal of the charging device 102 by a third party.

In the above-described embodiment, the smart watch 103 acquires the distance between the charging device 102 and the power transmission device 101, further measures the distance between the device itself and the charging device 102, and issues a warning based on these distances. The configuration to be performed has been described. However, the charging device 102 may measure the distance to the power transmission device 101, further measure the distance to the smart watch 103, and determine whether to issue a warning based on the measured distance. When it is determined that the charging device 102 issues a warning, the charging device 102 may issue a warning on its own device, or may instruct the smart watch 103 or the power transmission device 101 to issue a warning by wireless communication. Similarly, the power transmitting apparatus 101 may measure the distance to each apparatus, and instruct the apparatus to issue a warning by itself or to issue a warning to another apparatus by wireless communication. Also, a configuration may be adopted in which a plurality of devices issue warnings in parallel.

In the above-described embodiment, the configuration is such that a warning is issued based on the distance between the charging device 102 and the power transmission device 101 and the distance between the charging device 102 and the smart watch 103 . However, when the distance between the charging device 102 and the power transmission device 101 is large, the smart watch 103 may issue a warning without considering the distance between the charging device 102 and the smart watch 103. In this case, the charging device 102 that performs wireless power transmission measures the distance between itself and the power transmission device 101, and determines whether the measured distance is a predetermined distance. Then, when the distance between own device and power transmission device 101 is a predetermined distance, charging device 102 notifies smart watch 103 by wireless communication. This notification is a notification indicating that the distance from the power transmission apparatus 101 is a predetermined distance. Then, the smart watch 103 may perform the above-described warning based on the received notification. Note that the power transmission device 102 may measure the distance from the charging device 102 and notify the smart watch 103 in the same manner as described above.

  With this configuration, when the charging device 102 and the power transmission device 101 are separated from each other, it is possible to immediately notify the smart watch 103, so that security can be improved.

In the above-described embodiment, a warning is issued based on the distance between the charging device 102 and the power transmission device 101 and the distance between the charging device 102 and the smart watch 103 . However, the smart watch 103 may be configured to perform further notification to improve user convenience. For example, when the wireless power transmission between the power transmitting device 101 and the charging device 102 is terminated due to the charging device 102 being fully charged or the like, the smart watch 103 notifies that the wireless power transmission of the charging device 102 has been terminated. Good. In this case, the charging device 102 or the power transmission device 101 determines the end of the wireless power transmission. In this determination, for example, when the charging device 102 transmits a message requesting stop of power transmission to the charging device 102 when the charging device 102 is fully charged, it is determined that the wireless power transmission has ended. Then, the charging device 102 or the power transmitting device 101 that has determined the end of the wireless power transmission notifies the smart watch 103 of the end of the wireless power transmission by wireless communication. When the smart watch 103 receives the notification indicating the end of the wireless power transmission from the charging device 102 or the power transmission device 101, the smart watch 103 smartly ends the wireless power transmission (charging) of the charging device 102 by at least one of voice, display, and vibration. The user of the watch 103 is notified.

  With this configuration, the smartwatch 103 can immediately recognize the wireless power transmission (charging) of the charging device 102 and notify the user of the smartwatch 103 of the wireless power transmission (charging). Therefore, since the user can recognize the end of charging of the charging device 102, it is possible to reduce the case where the charging device 102 is left on the power transmission device 101 forever. Further, the user can quickly collect the charging device 102 from the power transmission device 101 as soon as the charging of the charging device 102 is completed, so that security is improved.

(Other embodiments)
The present invention supplies a program for realizing one or more functions of the above-described embodiments to a system or an apparatus via a network or a storage medium, and one or more processors in a computer of the system or the apparatus read and execute the program. This processing can be realized. Further, it can also be realized by a circuit (for example, an ASIC) that realizes one or more functions.

101 power transmission device 102 charging equipment 103 smart watch

Claims (13)

An information processing device,
First determining means for determining that a distance from another information processing apparatus is greater than a predetermined distance;
A second determination unit that determines that a distance between the another information processing apparatus and a power transmission apparatus that wirelessly transmits power to the other information processing apparatus is greater than a predetermined distance;
The first determining means determines that the distance to the other information processing apparatus is greater than a predetermined distance, and the second determining means determines that the distance between the other information processing apparatus and the power transmitting apparatus is predetermined. based on that it is determined that apart than the distance, the information processing apparatus characterized by having, a notification unit that performs a predetermined notification.   The information processing apparatus according to claim 1, wherein the first determination unit determines that a distance from the another information processing apparatus is greater than a predetermined distance based on wireless communication.   The determination by the second determination unit is performed based on a measurement result of a distance between the other information processing device and the power transmission device, the measurement result being received from the other information processing device, and based on the measurement result. Item 3. The information processing device according to item 1 or 2.   4. The apparatus according to claim 1, wherein the first determining unit determines that a distance from the another information processing apparatus is greater than a predetermined distance based on an average value of a received electric field intensity in a predetermined period. 4. The information processing apparatus according to any one of 3. The second determination hand stage, the other information processing equipment in the information processing apparatus according to any one of claims 1 to 4, wherein determining that not within transmission range of the power transmitting device . The information processing apparatus according to any one of claims 1 to 5 , wherein the determination by the first determination unit is performed based on communication by Bluetooth (registered trademark) Low Energy. Wherein the predetermined notification information processing apparatus according to any one of claims 1 to 6, characterized in that a notification indicating that the other information processing apparatus is to have. The information processing apparatus according to any one of claims 1 to 7 , wherein the notification unit performs the predetermined notification using at least one of display, sound, and vibration. The notification unit based on an instruction from the other information processing apparatus or the transmission apparatus, the information processing apparatus according to any one of claims 1 to 8, characterized in that the predetermined notification. Said notification means, according to the radio based on the power transmission has been completed, any one of claims 1 to 9, characterized in that a notification between the other information processing apparatus and the power transmission device Information processing device. The information processing apparatus, an information processing apparatus according to any one of claims 1 to 1 0, characterized in that a wearable device. A method for controlling an information processing device, comprising:
A first determination step of determining that a distance from another information processing apparatus is greater than a predetermined distance;
A second determination step of determining that a distance between the another information processing apparatus and a power transmission apparatus that wirelessly transmits power to the other information processing apparatus is greater than a predetermined distance;
In the first determination step, it is determined that the distance to the other information processing apparatus is greater than a predetermined distance, and in the second determination step, the distance between the other information processing apparatus and the power transmission apparatus is predetermined. control method for an information processing apparatus of the basis that is determined from that at a distance, and having a notification step of performing a predetermined notification. A program for causing a computer to operate as the device according to any one of claims 1 to 11.

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