WO2013038882A1 - Terminal sans fil, système de transmission de puissance et procédé de transmission de puissance - Google Patents

Terminal sans fil, système de transmission de puissance et procédé de transmission de puissance Download PDF

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Publication number
WO2013038882A1
WO2013038882A1 PCT/JP2012/071233 JP2012071233W WO2013038882A1 WO 2013038882 A1 WO2013038882 A1 WO 2013038882A1 JP 2012071233 W JP2012071233 W JP 2012071233W WO 2013038882 A1 WO2013038882 A1 WO 2013038882A1
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WO
WIPO (PCT)
Prior art keywords
power transmission
power
wireless terminal
reception quality
unit
Prior art date
Application number
PCT/JP2012/071233
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English (en)
Japanese (ja)
Inventor
秀章 新明
正盛 徳田
増田　年克
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シャープ株式会社
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Publication date
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Publication of WO2013038882A1 publication Critical patent/WO2013038882A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/05—Circuit arrangements or systems for wireless supply or distribution of electric power using capacitive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer

Definitions

  • the present invention relates to a wireless terminal, a power transmission system including a wireless terminal and a power transmitter, and a power transmission method between the wireless terminal and the power transmitter.
  • Patent Document 1 As a technique for suitably receiving a radio signal in a wireless terminal, there is a technique disclosed in Patent Document 1.
  • the portable terminal described in Patent Document 1 is a portable terminal that receives non-contact power transmission (contactless power transmission; see Non-Patent Document 1, etc.) from a primary device, and performs information communication with other terminals through an antenna. Prior to starting, the primary side device is requested to stop execution of contactless power transmission. As a result, before information communication is performed, the execution of contactless power transmission is stopped before the occurrence of harmonic noise due to the execution of contactless power transmission, ensuring the reliability of information communication. To do.
  • JP 2008-206297 (published on Sep. 4, 2008)
  • a wireless terminal cannot receive power transmission while receiving a wireless signal. Therefore, a wireless terminal that continuously receives wireless signals for a long time, a wireless terminal that frequently receives wireless signals, and the like may not be able to receive sufficient power transmission.
  • the present invention has been made in view of the above problems, and provides a technique for sufficiently receiving power transmission while successfully suppressing adverse effects on reception of a radio signal due to power transmission in a wireless terminal. Is the main purpose.
  • a wireless terminal includes a receiving unit that receives a radio signal, a power receiving unit that receives power transmission from an external power transmitter, and a measuring unit that measures reception quality in the receiving unit.
  • the power receiving means receives power transmission, and the power transmission means continues to transmit power to the power receiving means according to the reception quality measured by the measuring means when the receiving means is receiving a radio signal. Or a control means for stopping.
  • the wireless terminal receives power transmission from the power transmitter and receives a wireless signal.
  • noise due to power transmission may adversely affect reception of wireless signals.
  • the wireless terminal may not be able to receive the power transmission sufficiently.
  • the present inventor suitably determines whether or not a radio signal is being received favorably by measuring reception quality when receiving a radio signal and receiving power transmission based on a unique idea. It can be determined and power transmission is continued as long as the radio signal is favorably received, and power transmission is stopped at the wireless terminal by stopping power transmission when the radio signal cannot be favorably received.
  • the inventors have conceived that the power transmission can be sufficiently received while successfully suppressing the adverse influence on the reception of the resulting radio signal, and have completed the invention.
  • the power transmission is continued as long as the wireless signal is favorably received, and the wireless signal cannot be favorably received.
  • the power transmission can be sufficiently received while the power transmission is sometimes stopped and the adverse effect on the reception of the radio signal due to the power transmission is successfully suppressed.
  • a power transmission method is a power transmission method between a wireless terminal that receives a wireless signal and a power transmitter that performs power transmission to the wireless terminal, wherein the wireless terminal receives power from the power transmitter.
  • the wireless terminal receives the transmission and receives the wireless signal
  • the wireless terminal measures the reception quality of the wireless signal
  • the wireless terminal measures the reception quality measured in the measurement process.
  • a control step of continuing or stopping power transmission to the wireless terminal by the power transmitter is a control step of continuing or stopping power transmission to the wireless terminal by the power transmitter.
  • the wireless terminal can successfully receive power transmission while preferably receiving a wireless signal.
  • the wireless terminal can successfully receive power transmission while preferably receiving a wireless signal.
  • FIG. 1 is a diagram schematically showing a schematic configuration of a wireless terminal and the like according to an embodiment of the present invention.
  • a wireless terminal 10 according to the present embodiment includes a receiving unit (receiving unit) 11, a quality monitoring unit (measuring unit) 12, a main control unit (control unit) 13, a charging processing unit 14, and a charging device.
  • Unit (power receiving means) 15 and control circuit unit 16 receive a radio signal from radio station 30 and receive non-contact power transmission from charging stand (power transmitter) 20.
  • the charging stand 20 includes a charging device unit 21, a control circuit unit 22, and a charging processing unit 23.
  • the wireless terminal 10 and the charging stand 20 constitute a power transmission system.
  • the radio signal received by the radio terminal 10 from the radio station 30 is not particularly limited, and may be a broadcast signal or a radio signal constituting a part of bidirectional communication.
  • the contents of the radio signal are not particularly limited, and may be a data signal, an audio signal, a video signal, a control signal, an authentication signal, or the like.
  • the frequency band and method of the radio signal are not particularly limited.
  • the wireless station 30 may be a broadcasting station that performs wireless broadcasting to the wireless terminal 10, a mobile communication base station of the wireless terminal 10, or any wireless communication (including short-range wireless communication) with the wireless terminal 10. ) May be another wireless device.
  • the wireless terminal 10 may be a mobile terminal such as a mobile phone terminal, a mobile information terminal, or a smartphone, but is not limited thereto.
  • the charging stand 20 should just be a thing which can transmit non-contact electric power to the radio
  • the receiving unit 11 includes an antenna, a matching circuit, a radio circuit, and the like, and receives a radio signal from the radio station 30.
  • the quality monitoring unit 12 measures the reception quality of the radio signal received by the receiving unit 11.
  • the quality monitoring unit 12 only needs to measure a known standard as reception quality by a known method, for example, C / N (Carrier to Noise), BER (Bit Error Rate), reception sensitivity, reception power.
  • AGC Auto-Gain Control or the like may be measured.
  • the main control unit 13 performs processing corresponding to the content of the radio signal on the radio signal received by the receiving unit 11.
  • the main control unit 13 also controls the charging stand 20 according to the reception quality measured by the quality monitoring unit 12. Details of the control of the charging stand 20 by the main control unit 13 will be described later.
  • the main control unit 13 also detects whether or not the charging device unit 15 is in a chargeable state via the charging processing unit 14.
  • the power transmission from the charging stand 20 to the wireless terminal 10 includes the charging device unit 21, the control circuit unit 22 and the charging processing unit 23 of the charging stand 20, and the charging device unit 15, the control circuit unit 16 and the charging process of the wireless terminal 10. This is realized by the cooperation of the unit 14.
  • the charging device unit 21 is a mechanism for performing non-contact power transmission to the charging device unit 15, and includes, for example, a primary coil for non-contact power transmission.
  • the control circuit unit 22 is a control circuit that controls the power transmission operation of the charging device unit 21, and exchanges control signals related to charging such as service information and timing information with the control circuit unit 16.
  • the method of exchanging control signals between the control circuit unit 22 and the control circuit unit 16 is not particularly limited, and may be wired or wireless.
  • the charging device unit 15 and the charging device Wireless communication may be performed using a coil included in the unit 21.
  • the charging processing unit 23 controls operations of the charging device unit 21 and the control circuit unit 22 so that non-contact power transmission from the charging stand 20 to the wireless terminal 10 is achieved.
  • the charging device unit 15 is a mechanism for receiving non-contact power transmission from the charging device unit 21, and includes, for example, a secondary coil for non-contact power transmission.
  • the charging device unit 15 also includes a battery for charging the electric power transmitted by the non-contact electric power.
  • the control circuit unit 16 is a control circuit that controls the power receiving operation and the charging operation of the charging device unit 15, and exchanges control signals with the control circuit unit 22.
  • the charging processing unit 14 controls operations of the charging device unit 21 and the control circuit unit 22 based on the control from the main control unit 13.
  • charging device unit 15 and control circuit unit 16 may be configured to be detachable as a battery pack.
  • the contactless power transmission method used in the present embodiment is not particularly limited, and may be, for example, an electromagnetic induction method, a magnetic field resonance method, an electric field coupling method, a radio wave reception method, or the like. 1 may be used. It should be noted that those skilled in the art can appropriately apply known techniques to the configuration of the charging device unit 15 and the charging device unit 21 and the configuration of the control circuit unit 16 and the control circuit unit 22 according to the non-contact power transmission method used. Is easy to understand.
  • the charging device unit 21 may include a primary coil
  • the charging device unit 15 may include a secondary coil. It is only necessary to have an electrode, and if it is a radio wave reception system, it is sufficient to have an antenna and a resonance circuit.
  • the wireless terminal 10 continues or stops power transmission according to reception quality, so that power transmission is continued as long as the wireless signal is favorably received. Therefore, the power transmission can be sufficiently received while the adverse effect on the reception of the radio signal due to the power transmission is successfully suppressed by stopping the power transmission when the reception becomes impossible.
  • FIG. 2 is a flowchart illustrating an example of the power transmission method according to the present embodiment.
  • the wireless terminal 10 is initially in a state of continuing communication and charging (step S12). That is, the receiving unit 11 receives a radio signal (including a broadcast signal) from the radio station 30, and the charging device unit 15 receives non-contact power transmission from the charging device unit 21.
  • a radio signal including a broadcast signal
  • the wireless terminal 10 determines whether or not the reception quality satisfies a predetermined level (step S13). That is, the quality monitoring unit 12 measures the reception quality of the radio signal received by the receiving unit 11, and the main control unit 13 makes a determination based on the result.
  • FIG. 3 is a diagram illustrating an example of a criterion for determining whether or not the reception quality satisfies a predetermined level in the present embodiment.
  • the main control unit 13 compares each value of the reception quality measured within a predetermined period with a threshold value (comparison reception quality), so that the reception quality is a predetermined level. It is determined whether or not the above is satisfied.
  • the main control unit 13 determines that the reception quality satisfies a predetermined level when the reception quality exceeds a threshold in most of the predetermined period as illustrated in FIG. Then, as shown in FIG. 3B, when the reception quality is below the threshold in most of the predetermined period, it is determined that the reception quality does not satisfy the predetermined level.
  • the main control unit 13 assumes that the reception quality is not stable. It may be determined that the reception quality does not satisfy a predetermined level.
  • the main control unit 13 may compare the reception quality value measured at a certain time point with the threshold value, instead of comparing the individual reception quality values measured within a predetermined period with the threshold value. Further, the main control unit 13 may compare a statistical value such as an average value calculated from individual values of reception quality measured within a predetermined period with a threshold value.
  • the threshold value to be compared may be a fixed value set in advance, but it is preferable to use a value dynamically calculated based on the reception quality measured by the quality monitoring unit 12.
  • the main control unit 13 stores the reception quality measured by the quality monitoring unit 12 when the reception unit 11 receives a radio signal and the charging device unit 15 is not receiving power from the charging device unit 21.
  • the reception quality may be used as a threshold value.
  • the reception quality of a radio signal is affected by fading, reflection, and the like, it may vary even when noise due to power transmission does not occur. Therefore, by comparing the reception quality when not receiving power transmission with the reception quality when receiving power transmission, fluctuations caused by other than power transmission such as fading and reflection are canceled and received. This is because the influence of power transmission on quality can be more accurately evaluated.
  • the main control unit 13 may use the reception quality measured by the quality monitoring unit 12 when it is not receiving power transmission as a threshold, or may use a statistical value such as an average value within a predetermined period as a threshold.
  • step S13 when the main control unit 13 determines that the reception quality does not satisfy the predetermined level, the process proceeds to step S14.
  • step S14 the main control unit 13 stops charging. Specifically, the main control unit 13 sends a control signal requesting to stop power transmission to the charging stand 20 via the charging processing unit 14 and the control circuit unit 16.
  • the charging processing unit 23 of the charging stand 20 stops the non-contact power transmission by the charging device unit 21 when the control circuit unit 22 receives a control signal requesting to stop the power transmission.
  • step S13 determines in step S13 that the reception quality satisfies a predetermined level
  • the process returns to step S12 to continue communication and charging.
  • the determination of the reception quality is continuously performed at a constant cycle or an indefinite cycle. This is because the reception quality of the radio signal is affected by fading, reflection, etc., and may be temporarily lowered. Even if fading, reflection, etc. temporarily affect the determination of the reception quality by the main control unit 13 determining the reception quality continuously or at an indefinite period, the reception quality as a whole This is because it is possible to accurately evaluate the influence of the power transmission on the.
  • the main control unit 13 suppresses the power consumed for the determination of the reception quality. Electric power can also be reduced.
  • reception quality determination timing (timing to shift from step S12 to step S13) can be set as appropriate.
  • the time when the receiving unit 11 receives a radio signal may be used as a trigger for determining the reception quality, or a certain period of time since the previous determination may be used as a trigger for determining the reception quality.
  • the wireless terminal 10 may be in a state where it can receive power transmission from the charging stand 20 as a trigger for determining reception quality. This case will be described in detail in Operation Example 2.
  • the reception quality may be continuously determined at a constant period or an indefinite period, and charging may be resumed when the reception quality satisfies a predetermined level. That is, power transmission for reception quality confirmation may be temporarily started, and the process may return to step S13.
  • the charging may be stopped until there is no reception for a certain period.
  • FIG. 4 is a flowchart illustrating another example of the power transmission method according to the present embodiment.
  • the wireless terminal 10 continues communication and is not charged (step S ⁇ b> 22). That is, the receiving unit 11 receives a radio signal (including a broadcast signal) from the radio station 30, but the charging device unit 15 does not receive non-contact power transmission from the charging device unit 21.
  • the wireless terminal 10 detects a charging request (step S23)
  • the processing after step S24 is started.
  • step S23 the main control unit 13 detects a charging request by detecting that power transmission from the charging stand 20 is possible.
  • the state that can receive power transmission from the charging stand 20 refers to the following state in one embodiment.
  • the charging processing unit 14 and the charging processing unit 23 detect that the charging device unit 15 and the charging device unit 21 are in a positional relationship where electric power can be transmitted.
  • the charging processing unit 14 and the charging processing unit 23 detect, for example, that the coils included in the charging device unit 15 and the charging device unit 21 are affected by each other's magnetic field or electric field and cause voltage fluctuations. It can be detected that the charging device unit 15 and the charging device unit 21 are in a positional relationship in which power can be transmitted. Further, the positional relationship may be detected by other sensors or the like. Moreover, according to the detected positional relationship, you may move the coil etc. with which the charging device part 21 is provided to the position which can transmit non-contact electric power.
  • the charging processing unit 14 and the charging processing unit 23 authenticate whether each other is a partner of non-contact power transmission by exchanging control signals between the control circuit unit 16 and the control circuit unit 22. Then, when the authentication of the charging processing unit 23 by the charging processing unit 14 is completed, the main control unit 13 detects that the power can be received from the charging stand 20.
  • step S24 the main control unit 13 starts charging for reception quality confirmation. Specifically, the main control unit 13 sends a control signal requesting the start of power transmission to the charging stand 20 via the charging processing unit 14 and the control circuit unit 16.
  • the control circuit unit 22 receives a control signal for requesting the start of power transmission
  • the charging processing unit 23 of the charging stand 20 starts non-contact power transmission by the charging device unit 21.
  • the main control unit 13 determines whether or not the reception quality measured by the quality monitoring unit 12 satisfies a predetermined level in a state where power transmission from the charging stand 20 is started (step S25). Determination criteria and the like are the same as those in the first operation example.
  • step S25 when the main control unit 13 determines that the reception quality does not satisfy the predetermined level, the process proceeds to step S29.
  • step S29 as in step S14, the main control unit 13 stops charging.
  • step S25 when the main control unit 13 determines in step S25 that the reception quality satisfies a predetermined level, normal charging is started in step S26.
  • step S27 the main control unit 13 determines the reception quality as in step S13 (step S28), and the charging is continued according to the result (in step S27). Or the charging is stopped (the process proceeds to step S29).
  • the main control unit 13 starts determining reception quality when the main control unit 13 detects that power transmission from the charging stand 20 has been detected. By doing so, the power transmission can be sufficiently received while the adverse effect on the reception of the radio signal due to the power transmission is successfully suppressed.
  • the main control unit 13 may change the control depending on the type of radio signal received by the receiving unit 11. For example, the above-described control is performed for a radio signal having a normal level of importance, while reception of the radio signal is prioritized for a radio signal having a high importance, and power from the charging stand 20 is always given. Transmission may be stopped. In addition, for wireless signals with low importance, charging may be prioritized and power transmission from the charging stand 20 may be continued at all times.
  • the main control unit 13 may change the control according to the amount of charge in the charging device unit 15. For example, when the amount of charge is low, power transmission from the charging stand 20 may be continued at all times.
  • the wireless terminal 10 uses the power obtained by the power transmission from the charging stand 20 for charging.
  • the power obtained by the power transmission from the charging stand 20 is wirelessly It may be used directly for the operation of the terminal 10.
  • the above-mentioned embodiment demonstrated the case where the electric power transmission between the charging device part 15 and the charging device part 21 was non-contact electric power transmission, between the charging device part 15 and the charging device part 21 was demonstrated.
  • the power transmission may be wired power transmission. Even in such a case, it is possible to suppress the adverse effect on the reception quality of the radio signal due to the floor noise of the power supply system. Can receive enough transmission.
  • the wireless terminal 10 is configured to receive non-contact power transmission from the charging stand 20 as in the above-described embodiment, it is not necessary to connect the wireless terminal 10 and the charging stand 20 with a cord or the like.
  • the degree of freedom in handling the wireless terminal 10 is improved, which is preferable.
  • the main control unit 13 may be realized in hardware by a logic circuit formed on an integrated circuit (IC chip), or may be realized in software using a CPU (Central Processing Unit). Good.
  • IC chip integrated circuit
  • CPU Central Processing Unit
  • the main control unit 13 includes a CPU that executes instructions of a program that implements each function, a ROM (Read Memory) that stores the program, a RAM (Random Memory) that expands the program, the program,
  • a storage device such as a memory for storing various data is provided.
  • An object of the present invention is to provide a recording medium on which a program code (execution format program, intermediate code program, source program) of a control program of the main control unit 13 which is software for realizing the above-described functions is recorded so as to be readable by a computer. This can also be achieved by supplying the program to the main control unit 13 and reading and executing the program code recorded on the recording medium by the computer (or CPU or MPU).
  • Examples of the recording medium include tapes such as magnetic tapes and cassette tapes, magnetic disks such as floppy (registered trademark) disks / hard disks, and disks including optical disks such as CD-ROM / MO / MD / DVD / CD-R.
  • IC cards including memory cards) / optical cards, semiconductor memories such as mask ROM / EPROM / EEPROM (registered trademark) / flash ROM, or PLD (Programmable logic device) and FPGA (Field Programmable Gate Logic circuits such as (Array) can be used.
  • the main control unit 13 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network.
  • the communication network is not particularly limited as long as it can transmit the program code.
  • the Internet intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network (Virtual Private Network), telephone line network, mobile communication network, satellite communication network, etc. can be used.
  • the transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type.
  • wired lines such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared rays such as IrDA and remote control, Bluetooth (registered trademark), IEEE 802.11 wireless, HDR ( It can also be used by wireless such as High Data Rate, NFC (Near Field Communication), DLNA (Digital Living Network Alliance), mobile phone network, satellite line, and terrestrial digital network.
  • wired lines such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared rays such as IrDA and remote control, Bluetooth (registered trademark), IEEE 802.11 wireless, HDR ( It can also be used by wireless such as High Data Rate, NFC (Near Field Communication), DLNA (Digital Living Network Alliance), mobile phone network, satellite line, and terrestrial digital network.
  • wired lines such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line,
  • a wireless terminal includes a receiving unit that receives a radio signal, a power receiving unit that receives power transmission from an external power transmitter, a measuring unit that measures reception quality in the receiving unit, and the power receiving unit.
  • Control means for receiving power transmission and for continuing or stopping power transmission to the power receiving means by the power transmitter according to the reception quality measured by the measuring means when the receiving means is receiving a radio signal; It is characterized by having.
  • the wireless terminal receives power transmission from the power transmitter and receives a wireless signal.
  • noise due to power transmission may adversely affect reception of wireless signals.
  • the wireless terminal may not be able to receive the power transmission sufficiently.
  • the present inventor suitably determines whether or not a radio signal is being received favorably by measuring reception quality when receiving a radio signal and receiving power transmission based on a unique idea. It can be determined and power transmission is continued as long as the radio signal is favorably received, and power transmission is stopped at the wireless terminal by stopping power transmission when the radio signal cannot be favorably received.
  • the inventors have conceived that the power transmission can be sufficiently received while successfully suppressing the adverse influence on the reception of the resulting radio signal, and have completed the invention.
  • the power transmission is continued as long as the wireless signal is favorably received, and the wireless signal cannot be favorably received.
  • the power transmission can be sufficiently received while the power transmission is sometimes stopped and the adverse effect on the reception of the radio signal due to the power transmission is successfully suppressed.
  • the power transmission is preferably contactless power transmission.
  • the wireless terminal since the wireless terminal receives power transmission from the power transmitter, it is not necessary to connect the wireless terminal and the power transmitter with a cord or the like, and the degree of freedom in handling the wireless terminal can be improved.
  • the non-contact power transmission there is a possibility that the adverse effect on the reception of the radio signal may be increased.
  • the non-contact power transmission is continued or stopped according to the reception quality. As long as it is received properly, contactless power transmission is continued, and when wireless signals cannot be received properly, contactless power transmission is stopped, which adversely affects the reception of wireless signals due to power transmission. There is an effect that power transmission can be sufficiently received while being suppressed successfully.
  • the control means detects whether or not power can be transmitted from the power transmitter to the power receiving means, and when the receiving means is receiving a wireless signal.
  • the power transmission to the power receiving means is started by the power transmitter, and then according to the reception quality measured by the measuring means.
  • the wireless terminal when the wireless terminal is receiving a wireless signal, the wireless terminal is placed in a predetermined position on the power transmitter from a state in which power transmission is not possible.
  • the state changes to a possible state first, power transmission for signal quality measurement is started. Then, the reception quality is measured in this state, and the power transmission is continued (normal power transmission is started) or the power transmission is stopped according to the result.
  • the wireless terminal when the wireless terminal is receiving a wireless signal, when power transmission is possible, power transmission can be started as long as reception quality is ensured.
  • the control means uses the reception quality measured by the measurement means when the power reception means does not receive power transmission and the reception means receives a radio signal as a comparison reception quality. As a result of comparison between the reception quality measured by the measurement unit and the comparison reception quality when the power reception unit receives power transmission and the reception unit receives a radio signal. Accordingly, it is preferable to continue or stop the power transmission to the power receiving means by the power transmitter.
  • the reception quality of radio signals is affected by fading, reflection, etc., and may vary even when no noise is generated due to power transmission.
  • the control means can be used for fading, reflection, etc. It is possible to more accurately evaluate the influence of the power transmission on the reception quality by eliminating the fluctuation caused by the change. Therefore, the effect of the present invention can be realized more suitably.
  • a power transmission system includes the wireless terminal according to the present invention, and the power transmitter that transmits power to the power reception unit of the wireless terminal, and the power transmitter is connected to the wireless terminal. According to the control means, power transmission to the power receiving means of the wireless terminal is continued or stopped.
  • the wireless terminal can successfully receive power transmission while preferably receiving a wireless signal.
  • a power transmission method is a power transmission method between a wireless terminal that receives a wireless signal and a power transmitter that performs power transmission to the wireless terminal, wherein the wireless terminal receives power from the power transmitter.
  • the wireless terminal receives the transmission and receives the wireless signal
  • the wireless terminal measures the reception quality of the wireless signal
  • the wireless terminal measures the reception quality measured in the measurement process.
  • a control step of continuing or stopping power transmission to the wireless terminal by the power transmitter is a control step of continuing or stopping power transmission to the wireless terminal by the power transmitter.
  • the wireless terminal can successfully receive power transmission while preferably receiving a wireless signal.
  • the present invention can be used in the field of manufacturing wireless terminals and related products (for example, charging bases) of the wireless terminals.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

La présente invention a trait à un terminal sans fil (10) qui est équipé des éléments suivants : une unité de réception (11) ; une unité de dispositif de charge (15) ; et une unité de commande principale (13) qui, en fonction de la qualité du signal qui est mesurée lorsque l'unité de dispositif de charge (15) reçoit une transmission de puissance en provenance d'un chargeur (20) et que l'unité de réception (11) reçoit un signal radioélectrique, fait en sorte que la transmission de puissance du chargeur (20) vers l'unité de dispositif de charge (15) continue ou s'arrête.
PCT/JP2012/071233 2011-09-16 2012-08-22 Terminal sans fil, système de transmission de puissance et procédé de transmission de puissance WO2013038882A1 (fr)

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JP2011-203665 2011-09-16
JP2011203665A JP2013066307A (ja) 2011-09-16 2011-09-16 無線端末、電力伝送システムおよび電力伝送方法

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Publication number Priority date Publication date Assignee Title
JP6254906B2 (ja) * 2014-05-28 2017-12-27 京セラ株式会社 無接点充電器、及び無接点充電システム
JP6525730B2 (ja) * 2015-05-27 2019-06-05 シャープ株式会社 移動体端末および無接点充電器
CN108099648A (zh) * 2017-12-14 2018-06-01 嘉兴智行物联网技术有限公司 一种基于lora与4g网关的分离式充电桩

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008131812A (ja) * 2006-11-22 2008-06-05 Kenwood Corp 携帯無線機用充電器
WO2010060062A1 (fr) * 2008-11-21 2010-05-27 Qualcomm Incorporated Réduction du brouillage entre des récepteurs et des émetteurs d’énergie sans fil
JP2010288443A (ja) * 2009-05-13 2010-12-24 Canon Inc 給電装置、その制御方法及び給電通信システム
JP2011078191A (ja) * 2009-09-30 2011-04-14 Nec Casio Mobile Communications Ltd 充電装置及び電子機器並びにプログラム

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11163977A (ja) * 1997-11-28 1999-06-18 Sharp Corp 携帯電話機
US7142123B1 (en) * 2005-09-23 2006-11-28 Lawrence Kates Method and apparatus for detecting moisture in building materials
JP2010028934A (ja) * 2008-07-16 2010-02-04 Seiko Epson Corp 受電制御装置、受電装置および無接点電力伝送システム
US8488799B2 (en) * 2008-09-11 2013-07-16 Personics Holdings Inc. Method and system for sound monitoring over a network
JP2010206299A (ja) * 2009-02-27 2010-09-16 Hitachi Information & Communication Engineering Ltd 通話録音装置及び通話録音方法
JP5527799B2 (ja) * 2009-10-13 2014-06-25 Ｎｅｃカシオモバイルコミュニケーションズ株式会社 端末装置及びプログラム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008131812A (ja) * 2006-11-22 2008-06-05 Kenwood Corp 携帯無線機用充電器
WO2010060062A1 (fr) * 2008-11-21 2010-05-27 Qualcomm Incorporated Réduction du brouillage entre des récepteurs et des émetteurs d’énergie sans fil
JP2010288443A (ja) * 2009-05-13 2010-12-24 Canon Inc 給電装置、その制御方法及び給電通信システム
JP2011078191A (ja) * 2009-09-30 2011-04-14 Nec Casio Mobile Communications Ltd 充電装置及び電子機器並びにプログラム

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