JP4665991B2 - Wireless energy transmission device and wireless energy transmission method - Google Patents

Wireless energy transmission device and wireless energy transmission method Download PDF

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JP4665991B2
JP4665991B2 JP2008105996A JP2008105996A JP4665991B2 JP 4665991 B2 JP4665991 B2 JP 4665991B2 JP 2008105996 A JP2008105996 A JP 2008105996A JP 2008105996 A JP2008105996 A JP 2008105996A JP 4665991 B2 JP4665991 B2 JP 4665991B2
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power
oscillating
magnetic field
electric field
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JP2009261105A (en
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善樹 深田
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Toyota Motor Corp
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Description

本発明は、電線などを用いることなく無線でエネルギ伝送を行う無線エネルギ伝送装置及び無線エネルギ伝送方法に関するものである。
The present invention relates to a wireless energy transmission apparatus and a wireless energy transmission method for performing energy transmission wirelessly without using an electric wire or the like.

従来、無線でエネルギ伝送を行うシステムとして、例えば特開２００８−２２４２９号公報に記載されるように、所定の周波数の電磁波を送電アンテナから送電し、その送電した電磁波を受電アンテナで受けて電力を取り出すものが知られている。
特開２００８−２２４２９号公報 Conventionally, as a system for performing energy transmission wirelessly, for example, as described in Japanese Patent Application Laid-Open No. 2008-22429, an electromagnetic wave having a predetermined frequency is transmitted from a power transmission antenna, and the transmitted electromagnetic wave is received by a power receiving antenna to generate electric power. What is taken out is known.
JP 2008-22429 A

この種の無線伝送のシステムにあっては、伝送される電力が盗まれるおそれがある。例えば、エネルギを盗もうとする者が盗電用の受電アンテナを用意し、その盗電用の受電アンテナを所定の位置に配置することにより、送電アンテナから送電される電磁波を受けることができ、電力を盗むことができる。   In this type of wireless transmission system, the transmitted power may be stolen. For example, a person who wants to steal energy prepares a power receiving antenna for power theft and places the power receiving antenna for power theft in a predetermined position so that it can receive electromagnetic waves transmitted from the power transmitting antenna, Can steal.

この場合、盗電用の受電アンテナが設置されているか否かに基づいて盗電を検出することが考えられるが、盗電用の受電アンテナの設置を検出する物体検出装置などが必要となり、盗電の検出が容易ではない。   In this case, it is conceivable to detect theft based on whether or not a power receiving antenna for theft is installed, but an object detection device or the like that detects the installation of the power receiving antenna for theft is required, and the detection of theft It's not easy.

そこで本発明は、無線伝送されるエネルギが盗まれていることを容易に検出できる無線エネルギ伝送装置及び無線エネルギ伝送方法を提供することを目的とする。
Accordingly, an object of the present invention is to provide a wireless energy transmission apparatus and a wireless energy transmission method that can easily detect that the energy transmitted by wireless transmission is stolen.

すなわち、本発明に係る無線エネルギ伝送装置は、振動磁場又は振動電場を発生させる送電部と、前記送電部の振動磁場又は振動電場を受電アンテナにより受けて電力に変換する受電部と、前記送電部の周囲に形成される振動磁場又は振動電場を検知する検知手段と、前記送電部により発せられる振動磁場又は振動電場の出力状態を変更する出力変更手段と、前記送電部から前記受電部に電力伝送している際に前記検知手段により検知された振動磁場又は振動電場の状態に基づいて盗電されているか否かを判断する盗電判断手段と、を備え、前記盗電判断手段は、盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記出力変更手段により出力変更された際に、前記検知手段により検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断するものである。 That is, the wireless energy transmission device according to the present invention includes a power transmission unit that generates an oscillating magnetic field or an oscillating electric field, a power receiving unit that receives the oscillating magnetic field or oscillating electric field of the power transmitting unit by a power receiving antenna, and the power transmitting unit. Detecting means for detecting an oscillating magnetic field or oscillating electric field formed around the power , output changing means for changing an output state of the oscillating magnetic field or oscillating electric field generated by the power transmitting unit, and power transmission from the power transmitting unit to the power receiving unit A stealing judgment means for judging whether or not the power is stolen based on the state of the oscillating magnetic field or the oscillating electric field detected by the detecting means when the power is being stolen, the stores the waveform of the vibration magnetic field or an oscillating electric field at the time of power transmission, when the output changes by the output changing means, vibration sensed by the sensing means It is to determine whether a magnetic field or oscillating electric field waveform are power theft as compared to the waveform of the oscillating magnetic field or an oscillating electric field at the time of normal power transmission.

この発明によれば、送電部から受電部に電力伝送している際に検知手段により検知された振動磁場又は振動電場の状態に基づいて盗電されているか否かを判断することにより、盗電されているか否かを容易に検出することができる。
また、この発明によれば、送電部により発せられる振動磁場又は振動電場の出力状態を変更することにより、振動磁場又は振動電場の出力状態の変更後における振動磁場又は振動電場を検知し、振動磁場又は振動電場の出力変更に対し検知される振動磁場又は振動電場の変動が追従していない場合に盗電されていると判断することができる。 According to this invention, when power is transmitted from the power transmitting unit to the power receiving unit, it is stolen by determining whether or not it is stolen based on the state of the oscillating magnetic field or the oscillating electric field detected by the detecting unit. It can be easily detected.
Further, according to the present invention, by changing the output state of the oscillating magnetic field or oscillating electric field generated by the power transmission unit, the oscillating magnetic field or oscillating electric field after the change of the oscillating magnetic field or oscillating electric field output state is detected, and the oscillating magnetic field is detected. Alternatively, it can be determined that theft has been made when the fluctuation of the oscillating magnetic field or the oscillating electric field detected in response to the change in the output of the oscillating electric field does not follow.

また本発明に係る無線エネルギ伝送装置において、前記送電部により発せられる振動磁場又は振動電場の周波数を変更する周波数変更手段を備え、前記盗電判断手段は、盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記周波数変更手段により周波数変更された際に、前記検知手段により検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断することが好ましい。 Further, in the wireless energy transmission device according to the present invention, the wireless energy transmission device includes a frequency changing unit that changes a frequency of the oscillating magnetic field or the oscillating electric field generated by the power transmission unit, and the stealing determination unit is a vibration during normal power transmission that is not stealed. A waveform in a magnetic field or an oscillating electric field is stored, and when the frequency is changed by the frequency changing unit, the waveform of the oscillating magnetic field or oscillating electric field detected by the detecting unit is changed to an oscillating magnetic field or an oscillating electric field during normal power transmission. It is preferable to determine whether or not the electric power is stolen compared with the waveform .

この発明によれば、送電部により発せられる振動磁場又は振動電場の周波数を変更することにより、振動磁場又は振動電場の周波数の変更後における振動磁場又は振動電場を検知し、振動磁場又は振動電場の周波数変更に対し検知される振動磁場又は振動電場の変動が追従していない場合に盗電されていると判断することができる。   According to the present invention, by changing the frequency of the oscillating magnetic field or the oscillating electric field generated by the power transmission unit, the oscillating magnetic field or the oscillating electric field after the change of the frequency of the oscillating magnetic field or the oscillating electric field is detected. It can be determined that theft has occurred when the fluctuation of the oscillating magnetic field or oscillating electric field detected with respect to the frequency change does not follow.

また本発明に係る無線エネルギ伝送装置において、前記盗電判断手段により盗電されていると判断された場合に報知を行う報知手段を備えることが好ましい。   Moreover, the wireless energy transmission device according to the present invention preferably includes notifying means for making a notification when it is determined that the theft is determined by the theft determination means.

この発明によれば、盗電されていると判断された場合に報知を行うことにより、管理者などが盗電されていることを認識することができる。   According to the present invention, it is possible to recognize that the administrator or the like has been stolen by notifying when it is determined that the theft has been carried out.

さらに本発明に係る無線エネルギ伝送装置において、前記盗電判断手段により盗電されていると判断された場合に電力伝送を停止する停止手段を備えることが好ましい。   Furthermore, it is preferable that the wireless energy transmission device according to the present invention further includes a stopping unit that stops power transmission when it is determined by the theft determination unit that the power is being stolen.

この発明によれば、盗電されていると判断された場合に電力伝送を停止することにより、盗電を効果的に抑制することができる。
また本発明に係る無線エネルギ伝送装置は、送電部により発生される振動磁場又は振動電場を受電部の受電アンテナにより受けて電力に変換する無線エネルギ伝送装置において、前記送電部の周囲に形成される振動磁場又は振動電場を検知する検知手段と、前記送電部から前記受電部に電力伝送している際に前記検知手段により検知された振動磁場又は振動電場の状態に基づいて盗電されているか否かを判断する盗電判断手段と、を備え、前記盗電判断手段は、盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記送電部により発せられる振動磁場又は振動電場の出力状態が変更された際に、前記検知手段により検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断するものである。
また本発明に係る無線エネルギ伝送装置は、送電部により発生される振動磁場又は振動電場を受電部の受電アンテナにより受けて電力に変換する無線エネルギ伝送装置において、前記送電部の周囲に形成される振動磁場又は振動電場を検知する検知手段と、前記送電部から前記受電部に電力伝送している際に前記検知手段により検知された振動磁場又は振動電場の状態に基づいて盗電されているか否かを判断する盗電判断手段と、を備え、前記盗電判断手段は、盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記送電部により発せられる振動磁場又は振動電場の周波数が変更された際に、前記検知手段により検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断するものである。
また本発明に係る無線エネルギ伝送方法は、送電部により発生される振動磁場又は振動電場を受電部の受電アンテナにより受けて電力に変換する無線エネルギ伝送方法において、前記送電部の周囲に形成される振動磁場又は振動電場を検知し、盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記送電部により発せられる振動磁場又は振動電場の出力状態が変更された際に、検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断するものである。
また、この本発明に係る無線エネルギ伝送方法は、送電部により発生される振動磁場又は振動電場を受電部の受電アンテナにより受けて電力に変換する無線エネルギ伝送方法において、前記送電部の周囲に形成される振動磁場又は振動電場を検知し、盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記送電部により発せられる振動磁場又は振動電場の周波数が変更された際に、検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断するものである。
According to the present invention, it is possible to effectively suppress theft by stopping the power transmission when it is determined that theft has occurred.
A wireless energy transmission device according to the present invention is formed around a power transmission unit in a wireless energy transmission device that receives an oscillating magnetic field or an oscillating electric field generated by a power transmission unit by a power reception antenna of the power reception unit and converts the electric power into power. Detection means for detecting an oscillating magnetic field or an oscillating electric field, and whether power is being stolen based on the state of the oscillating magnetic field or oscillating electric field detected by the detecting means when power is transmitted from the power transmission unit to the power receiving unit A theft power determination means for determining whether or not the power theft determination means stores an oscillating magnetic field or a waveform in an oscillating electric field during normal power transmission that is not stealed, and an oscillating magnetic field or vibration generated by the power transmission unit when the output state of the electric field is changed, the oscillating magnetic field in the normal time of the power transmitting sensed oscillating field or oscillating electric field of waveform by said detecting means also It is to determine whether it is power theft as compared to the waveform of the oscillating electric field.
A wireless energy transmission device according to the present invention is formed around a power transmission unit in a wireless energy transmission device that receives an oscillating magnetic field or an oscillating electric field generated by a power transmission unit by a power reception antenna of the power reception unit and converts the electric power into power. Detection means for detecting an oscillating magnetic field or an oscillating electric field, and whether power is being stolen based on the state of the oscillating magnetic field or oscillating electric field detected by the detecting means when power is transmitted from the power transmission unit to the power receiving unit A theft power determination means for determining whether or not the power theft determination means stores an oscillating magnetic field or a waveform in an oscillating electric field during normal power transmission that is not stealed, and an oscillating magnetic field or vibration generated by the power transmission unit When the frequency of the electric field is changed, the waveform of the oscillating magnetic field or oscillating electric field detected by the detecting means is changed to the oscillating magnetic field or It is to determine whether it is power theft as compared to the waveform of the dynamic electric field.
The wireless energy transmission method according to the present invention is a wireless energy transmission method that receives an oscillating magnetic field or an oscillating electric field generated by a power transmission unit by a power receiving antenna of the power receiving unit and converts the electric power into electric power, and is formed around the power transmission unit. An oscillating magnetic field or an oscillating electric field is detected, and a waveform in the oscillating magnetic field or the oscillating electric field at the time of normal power transmission not being stolen is stored, and the output state of the oscillating magnetic field or the oscillating electric field generated by the power transmission unit is changed. At this time, the waveform of the detected oscillating magnetic field or oscillating electric field is compared with the waveform of the oscillating magnetic field or oscillating electric field at the time of normal power transmission to determine whether or not the power is stolen.
Further, the wireless energy transmission method according to the present invention is a wireless energy transmission method in which an oscillating magnetic field or an oscillating electric field generated by a power transmission unit is received by a power reception antenna of the power reception unit and converted into electric power, and is formed around the power transmission unit. Oscillating magnetic field or oscillating electric field is detected, the waveform in the oscillating magnetic field or oscillating electric field at the time of normal power transmission not being stolen is stored, and the frequency of the oscillating magnetic field or oscillating electric field generated by the power transmission unit is changed. In this case, the detected waveform of the oscillating magnetic field or oscillating electric field is compared with the waveform of the oscillating magnetic field or oscillating electric field at the time of normal power transmission to determine whether or not the power is stolen.

本発明によれば、送電部の周囲に形成される振動磁場又は振動電場の状態に基づいて盗電されているか否かを判断することにより、無線伝送される電力が盗まれていることを容易に検出することができる。   According to the present invention, it is easily determined that the power transmitted wirelessly is stolen by determining whether or not the power is stolen based on the state of the oscillating magnetic field or the oscillating electric field formed around the power transmission unit. Can be detected.

以下、添付図面を参照して本発明の実施の形態を詳細に説明する。なお、図面の説明において同一の要素には同一の符号を付し、重複する説明を省略する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

図１は本発明の実施形態に係る無線エネルギ伝送装置の構成概要図である。   FIG. 1 is a schematic configuration diagram of a wireless energy transmission apparatus according to an embodiment of the present invention.

図１に示すように、本実施形態に係る無線エネルギ伝送装置１は、送電部２から受電部３に無線で電力エネルギを伝送する装置である。   As shown in FIG. 1, a wireless energy transmission device 1 according to the present embodiment is a device that wirelessly transmits power energy from a power transmission unit 2 to a power reception unit 3.

送電部２は、振動磁場を発生させるものであり、送電アンテナ２１、送電発信部２２を備えている。送電アンテナ２１は、交流電力を入力されることにより振動磁場を発生するアンテナであって、例えばコイルアンテナが用いられる。送電発信部２２は、送電アンテナ２１に対し交流電力を与えるものであり、例えば発振周波数を変更可能な発振器を備えたものが用いられる。   The power transmission unit 2 generates an oscillating magnetic field, and includes a power transmission antenna 21 and a power transmission transmission unit 22. The power transmission antenna 21 is an antenna that generates an oscillating magnetic field when AC power is input. For example, a coil antenna is used. The power transmission transmission unit 22 supplies AC power to the power transmission antenna 21. For example, a power transmission transmission unit 22 including an oscillator capable of changing the oscillation frequency is used.

また、送電部２は、検知部２３、盗電判断部２４、報知部２５を備えている。検知部２３は、送電部２の周囲に形成される振動磁場を検知する検知手段として機能するものであり、例えばコイルによって構成される。この検知部２３は、例えば送電アンテナ２１から所定の距離隔てた位置に設置される。これにより、検知部２３によって盗電者の受電器が発する振動磁場や送電部２が発する振動磁場を検知することができる。   The power transmission unit 2 includes a detection unit 23, a power theft determination unit 24, and a notification unit 25. The detection unit 23 functions as a detection unit that detects an oscillating magnetic field formed around the power transmission unit 2, and includes, for example, a coil. For example, the detection unit 23 is installed at a position separated from the power transmission antenna 21 by a predetermined distance. Thereby, the oscillating magnetic field emitted by the power receiver of the thief and the oscillating magnetic field emitted by the power transmission unit 2 can be detected by the detection unit 23.

盗電判断部２４は、検知部２により振動磁場の状態に基づいて盗電されているか否かを判断する盗電判断手段として機能するものであり、例えば検知信号解析装置などにより構成される。報知部２５は、盗電判断部２４により盗電されていると判断された場合に無線エネルギ伝送装置１の使用者若しくは管理者にその旨を報知するものである。報知部２５における報知の方法は、例えば音声やブザーなど聴覚を通じて報知するものであってもよいし、モニタ表示やランプなどの点灯、点滅など視覚を通じて報知するものであってもよい。   The power theft determination unit 24 functions as a power theft determination unit that determines whether or not the detection unit 2 is stealing based on the state of the oscillating magnetic field, and includes, for example, a detection signal analyzer. The notification unit 25 notifies the user or administrator of the wireless energy transmission apparatus 1 when it is determined that the theft is determined by the theft determination unit 24. The notification method in the notification unit 25 may be, for example, a notification through hearing such as voice or buzzer, or may be a notification through visual observation such as monitor display, lighting of a lamp, or blinking.

また、盗電判断部２４により盗電されていると判断された場合に電力伝送を停止させてもよい。例えば、盗電判断部２４により盗電されていると判断された場合に盗電検出信号が送電発信部２２に出力され、送電発信部２２における交流電力の出力を停止することにより電力伝送が停止される。この場合、盗電されている場合にすぐに電力伝送が停止されるため、盗電を効果的に抑制できる。   Further, power transmission may be stopped when it is determined by the theft power determination unit 24 that the power is being stolen. For example, when it is determined by the theft power determination unit 24 that the power has been stolen, a power theft detection signal is output to the power transmission transmission unit 22, and the power transmission is stopped by stopping the output of the AC power at the power transmission transmission unit 22. In this case, since the power transmission is immediately stopped when the power is stolen, theft can be effectively suppressed.

また、無線エネルギ伝送装置１は、周波数制御部２６、通信部２７を備えることが好ましい。周波数制御部２６は、振動磁場の周波数を制御するものであり、送電発信部２２に対し周波数制御信号を入力し、その周波数制御信号に応じた周波数の交流電力を送電発信部２２から出力させる。この場合、周波数制御部２６は、送電部２により発せられる振動磁場の周波数を変更する周波数変更部として機能する。送電の振動磁場の周波数を変更することにより、盗電による受電が行いにくくなり、盗電の抑制が図れる。   The wireless energy transmission device 1 preferably includes a frequency control unit 26 and a communication unit 27. The frequency control unit 26 controls the frequency of the oscillating magnetic field, inputs a frequency control signal to the power transmission / transmission unit 22, and causes the power transmission / transmission unit 22 to output AC power having a frequency corresponding to the frequency control signal. In this case, the frequency control unit 26 functions as a frequency changing unit that changes the frequency of the oscillating magnetic field generated by the power transmission unit 2. By changing the frequency of the oscillating magnetic field of power transmission, it becomes difficult to receive power by theft, and theft can be suppressed.

通信部２７は、受電部３側と情報の通信を行う通信手段であって、少なくとも送電部２により変更される振動磁場の周波数の情報を送信する。送信された情報は、受電部３の通信部３４を通じて共振周波数制御部３３に入力される。周波数の情報信号は、暗号化して送信することが好ましい。この場合、盗電する者に変更される振動磁場の周波数の情報を知られることを防止することができ、盗電の抑制が図れる。   The communication unit 27 is a communication unit that communicates information with the power reception unit 3 side, and transmits at least information on the frequency of the oscillating magnetic field changed by the power transmission unit 2. The transmitted information is input to the resonance frequency control unit 33 through the communication unit 34 of the power receiving unit 3. The frequency information signal is preferably transmitted after being encrypted. In this case, it is possible to prevent the information on the frequency of the oscillating magnetic field to be changed by a person who steals power, and to suppress power theft.

通信部２７の通信媒体は、情報通信を行えるものであればいずれのものであってもよく、例えば電波、光、赤外線などが用いられる。この通信部２７により送電部２により変更される振動磁場の周波数の情報を受電部３側に送信することにより、受電部３において受電アンテナ３１の共振周波数を振動磁場の周波数に合わせることが可能となる。   The communication medium of the communication unit 27 may be any medium that can perform information communication. For example, radio waves, light, infrared rays, and the like are used. By transmitting information on the frequency of the oscillating magnetic field changed by the power transmitting unit 2 by the communication unit 27 to the power receiving unit 3 side, the power receiving unit 3 can adjust the resonance frequency of the power receiving antenna 31 to the frequency of the oscillating magnetic field. Become.

なお、本実施形態において、周波数制御部２６、通信部２７の設置を省略する場合もある。   In the present embodiment, the installation of the frequency control unit 26 and the communication unit 27 may be omitted.

受電部３は、送電部２の振動磁場を受けて電力に変換するものであり、受電アンテナ３１、受電電力変換部３２、共振周波数制御部３３、通信部３４、共振周波数変更部３５を備えている。   The power receiving unit 3 receives the oscillating magnetic field of the power transmitting unit 2 and converts it into electric power. The power receiving unit 3 includes a power receiving antenna 31, a received power converting unit 32, a resonance frequency control unit 33, a communication unit 34, and a resonance frequency changing unit 35. Yes.

受電アンテナ３１は、送電部２の振動磁場を受けて電力に変換するアンテナであって、例えばコイルアンテナが用いられる。この受電アンテナ３１は、共振周波数を変更可能に構成されており、送電部２の振動磁場の周波数に合わせて共振周波数が変更される。また、受電アンテナ３１は、送電アンテナ２１と同一の共振周波数のものを用いることが好ましい。受電アンテナ３１の共振周波数の変更と同時に送電アンテナ２１の共振周波数も変更することが好ましい。   The power receiving antenna 31 is an antenna that receives the oscillating magnetic field of the power transmission unit 2 and converts it into electric power. For example, a coil antenna is used. The power receiving antenna 31 is configured to be able to change the resonance frequency, and the resonance frequency is changed according to the frequency of the oscillating magnetic field of the power transmission unit 2. Moreover, it is preferable to use the power receiving antenna 31 having the same resonance frequency as that of the power transmitting antenna 21. It is preferable to change the resonance frequency of the power transmission antenna 21 simultaneously with the change of the resonance frequency of the power receiving antenna 31.

受電電力変換部３２は、受電アンテナ３１で受電した電力を入力して変換するものであり、例えば受電アンテナ３１で受電した交流電力を直流電力に変換する。また、受電電力変換部３２は、振動磁場と同じ周波数で受電アンテナ３１に交流信号を送信する場合もある。この場合、通信部３４から周波数情報を入力して行えばよい。   The received power conversion unit 32 receives and converts the power received by the power receiving antenna 31, and converts, for example, AC power received by the power receiving antenna 31 into DC power. Moreover, the received power conversion unit 32 may transmit an AC signal to the power receiving antenna 31 at the same frequency as the oscillating magnetic field. In this case, frequency information may be input from the communication unit 34.

共振周波数制御部３３は、受電アンテナ３１の共振周波数を制御するものであり、送電部２の振動磁場の周波数の変更に応じて受電アンテナ３１の共振周波数を制御する共振周波数制御手段として機能する。この共振周波数制御部３３は、変更すべき共振周波数の情報を通信部３４から取得し、その共振周波数になるように共振周波数変更部３５に制御信号を出力する。   The resonance frequency control unit 33 controls the resonance frequency of the power receiving antenna 31, and functions as a resonance frequency control unit that controls the resonance frequency of the power receiving antenna 31 in accordance with a change in the frequency of the oscillating magnetic field of the power transmission unit 2. The resonance frequency control unit 33 acquires information on the resonance frequency to be changed from the communication unit 34, and outputs a control signal to the resonance frequency changing unit 35 so as to be the resonance frequency.

通信部３４は、送電部２側と情報の通信を行う通信手段であって、少なくとも送電部２により変更される振動磁場の周波数の情報を受信する。その際、受信した情報信号が暗号化されている場合には、暗号の解読機能を備えたものが用いられる。   The communication unit 34 is a communication unit that communicates information with the power transmission unit 2 and receives at least information on the frequency of the oscillating magnetic field changed by the power transmission unit 2. At this time, if the received information signal is encrypted, a signal having a decryption function is used.

共振周波数変更部３５は、受電アンテナ３１の共振周波数を変更するものであり、送電部２の振動磁場の周波数の変更に応じて受電アンテナ３１の共振周波数を変更する共振周波数変更手段として機能する。この共振周波数変更部３５としては、例えば受電アンテナ３１のインダクタンスを変更することにより共振周波数を変更するものが用いられる。受電アンテナ３１の近傍に鉄などの強磁性体３５ｂをコアとしたコイル３５ａが配置され、このコイル３５ａに流す直流電流の大きさを変えることにより強磁性体３５ｂの透磁率を変化させて受電アンテナ３１のインダクタンスを変化させる。これにより、受電アンテナ３１の共振周波数を変更することができる。また、コイル３５ａ及び強磁性体３５ｂを用いずに、受電アンテナ３１のコイル３１ａに直流電流を流すことにより受電アンテナ３１のインダクタンスを変化させて共振周波数を変更してもよい。   The resonance frequency changing unit 35 changes the resonance frequency of the power receiving antenna 31, and functions as a resonance frequency changing unit that changes the resonance frequency of the power receiving antenna 31 in accordance with the change of the frequency of the oscillating magnetic field of the power transmission unit 2. As the resonance frequency changing unit 35, for example, a unit that changes the resonance frequency by changing the inductance of the power receiving antenna 31 is used. A coil 35a having a ferromagnetic material 35b such as iron as a core is disposed in the vicinity of the power receiving antenna 31, and the magnetic permeability of the ferromagnetic material 35b is changed by changing the magnitude of a direct current flowing through the coil 35a. The inductance of 31 is changed. Thereby, the resonant frequency of the power receiving antenna 31 can be changed. Alternatively, the resonance frequency may be changed by changing the inductance of the power receiving antenna 31 by passing a direct current through the coil 31a of the power receiving antenna 31 without using the coil 35a and the ferromagnetic body 35b.

また、共振周波数変更部３５は、受電アンテナ３１のキャパシタを変更することにより共振周波数を変更するものであってもよい。例えば、受電アンテナ３１にバリキャップ（図示なし）を付加し、そのバリキャップの容量を変化させることにより、受電アンテナ３１の共振周波数を変更してもよい。   Further, the resonance frequency changing unit 35 may change the resonance frequency by changing the capacitor of the power receiving antenna 31. For example, the resonance frequency of the power receiving antenna 31 may be changed by adding a varicap (not shown) to the power receiving antenna 31 and changing the capacitance of the varicap.

また、受電電力変換部３２において、受電して取り出す電流を共振周波数と同期して変化させることによりコンデンサやコイルが存在するのと等価な状態を作り出すことができる。これによって受電アンテナ３１の共振周波数を変更させてもよい。具体的には、受電電力変換部３２に流入する電流とその端子間の電圧の位相がずれるように電流を制御することにより共振回路にコンデンサやコイルが存在するのと等価な状態にすればよい。   Further, in the received power conversion unit 32, a state equivalent to the presence of the capacitor or the coil can be created by changing the current received and extracted in synchronization with the resonance frequency. Accordingly, the resonance frequency of the power receiving antenna 31 may be changed. Specifically, it is only necessary to control the current so that the phase of the current flowing into the received power conversion unit 32 and the voltage between the terminals are shifted to make it equivalent to the presence of a capacitor or coil in the resonance circuit. .

受電アンテナ３１の共振周波数の変更と同時に送電アンテナ２１の共振周波数も変更する場合、例えば図２に示すように、送電部２に共振周波数変更部２８を設けることが好ましい。この共振周波数変更部２８は、送電アンテナ２１の共振周波数を変更するものであり、受電部３の共振周波数変更部３５と同様に構成され、例えば送電アンテナ２１のインダクタンスを変更することにより共振周波数を変更するものが用いられる。送電アンテナ２１の近傍に鉄などの強磁性体２８ｂをコアとしたコイル２８ａが配置され、このコイル２８ａに流す直流電流の大きさを変えることにより強磁性体２８ｂの透磁率を変化させて送電アンテナ２１のインダクタンスを変化させる。これにより、送電アンテナ２１の共振周波数を変更することができる。また、コイル２８ａ及び強磁性体２８ｂを用いずに、送電アンテナ２１のコイル２１ａに直流電流を流すことにより送電アンテナ２１のインダクタンスを変化させて共振周波数を変更してもよい。   When the resonance frequency of the power transmission antenna 21 is changed simultaneously with the change of the resonance frequency of the power receiving antenna 31, it is preferable to provide a resonance frequency changing unit 28 in the power transmission unit 2, for example, as shown in FIG. 2. The resonance frequency changing unit 28 changes the resonance frequency of the power transmitting antenna 21 and is configured similarly to the resonance frequency changing unit 35 of the power receiving unit 3. For example, the resonance frequency changing unit 28 changes the resonance frequency by changing the inductance of the power transmitting antenna 21. The one to change is used. A coil 28a having a ferromagnetic body 28b such as iron as a core is disposed in the vicinity of the power transmitting antenna 21, and the magnetic permeability of the ferromagnetic body 28b is changed by changing the magnitude of a direct current flowing through the coil 28a. The inductance of 21 is changed. Thereby, the resonant frequency of the power transmission antenna 21 can be changed. Further, the resonance frequency may be changed by changing the inductance of the power transmission antenna 21 by passing a direct current through the coil 21a of the power transmission antenna 21 without using the coil 28a and the ferromagnetic body 28b.

また、共振周波数変更部２８は、送電アンテナ２１のキャパシタを変更することにより共振周波数を変更するものであってもよい。例えば、送電アンテナ２１にバリキャップ（図示なし）を付加し、そのバリキャップの容量を変化させることにより、送電アンテナ２１の共振周波数を変更してもよい。   Further, the resonance frequency changing unit 28 may change the resonance frequency by changing the capacitor of the power transmission antenna 21. For example, the resonance frequency of the power transmission antenna 21 may be changed by adding a varicap (not shown) to the power transmission antenna 21 and changing the capacity of the varicap.

なお、受電部３において、共振周波数の変更を行わず受電する場合、共振周波数制御部３３、通信部３４、共振周波数変更部３５の設置を省略してもよい。その場合、送電部２の共振周波数変更部２８の設置も省略される。   When the power receiving unit 3 receives power without changing the resonance frequency, the installation of the resonance frequency control unit 33, the communication unit 34, and the resonance frequency changing unit 35 may be omitted. In that case, the installation of the resonance frequency changing unit 28 of the power transmission unit 2 is also omitted.

次に本実施形態に係る無線エネルギ伝送装置の動作及び本実施形態に係る無線エネルギ伝送方法について説明する。
Next, the operation of the wireless energy transmission apparatus according to this embodiment and the wireless energy transmission method according to this embodiment will be described.

図１において、まず、送電発信部２２は、所定の周波数の交流電力を送電アンテナ２１に出力する。そして、送電アンテナ２１は、その周波数に応じた振動磁場を生じさせる。送電発信部２２から出力される交流電流の周波数は、周波数制御部２６から出力される周波数制御信号に応じて設定される。   In FIG. 1, first, the power transmission transmission unit 22 outputs AC power having a predetermined frequency to the power transmission antenna 21. And the power transmission antenna 21 produces the oscillating magnetic field according to the frequency. The frequency of the alternating current output from the power transmission transmission unit 22 is set according to the frequency control signal output from the frequency control unit 26.

このとき、交流電流の周波数は、一定のものであってもよいが、時間経過と共に変更するものであることが好ましい。振動磁場の周波数を変更することにより、盗電が困難となり、盗電の抑制が図れる。例えば、図３に示すように、振動磁場の周波数を増減させて変更させる。また、その際、その周波数の時間的な減少率（減少速度）に対し増加率（増加速度）を大きくすることが好ましい。つまり、周波数が徐々に低くされ急激に高くされるように周波数変更することが好ましい。   At this time, the frequency of the alternating current may be constant, but is preferably changed over time. By changing the frequency of the oscillating magnetic field, it is difficult to steal and theft can be suppressed. For example, as shown in FIG. 3, the frequency of the oscillating magnetic field is increased or decreased. At this time, it is preferable to increase the increase rate (increase rate) with respect to the temporal decrease rate (decrease rate) of the frequency. That is, it is preferable to change the frequency so that the frequency is gradually lowered and rapidly increased.

これにより、送電部２の振動磁場の周波数を徐々に低くし急激に高くして変更することができ、盗電者の受電効率を著しく低くすることができ、盗電の抑制が図れる。図４に示すように、送電部２の振動磁場の周波数に対し受電部側の周波数が低いと受電効率が低くなる。このため、送電部２の振動磁場の周波数を急激に高くすることにより、盗電者の受電周波数を低くすることで受電効率を低くすることができる。   As a result, the frequency of the oscillating magnetic field of the power transmission unit 2 can be gradually lowered and suddenly increased, and the power receiving efficiency of the thief can be remarkably lowered, thereby suppressing theft of power. As shown in FIG. 4, when the frequency on the power receiving unit side is lower than the frequency of the oscillating magnetic field of the power transmitting unit 2, the power receiving efficiency is lowered. For this reason, power reception efficiency can be lowered by lowering the power reception frequency of the thief by rapidly increasing the frequency of the oscillating magnetic field of the power transmission unit 2.

図１において、周波数制御部２６は、送電発信部２２に周波数制御信号を出力すると共に通信部２７にも周波数制御信号を出力する。周波数制御信号を受けた通信部２７は、その周波数情報を受電部３の通信部３４に送信する。その送信により、受電部３側は、振動磁場の周波数情報を取得することができる。   In FIG. 1, the frequency control unit 26 outputs a frequency control signal to the power transmission transmission unit 22 and also outputs a frequency control signal to the communication unit 27. The communication unit 27 that has received the frequency control signal transmits the frequency information to the communication unit 34 of the power receiving unit 3. By the transmission, the power receiving unit 3 side can acquire frequency information of the oscillating magnetic field.

受電部３側では、送電アンテナ２１により発せられた振動磁場を受電アンテナ３１が受信する。その際、受電アンテナ３１の共振周波数が振動磁場の周波数と合うように変更されているため、効率よく受電することができる。すなわち、通信部３４が周波数情報を受信し、その周波数情報を共振周波数制御部３３に出力する。共振周波数制御部３３が受電アンテナ３１の共振周波数が周波数情報の周波数と同一になるように共振周波数変更部３５に制御信号を出力する。これにより、受電アンテナ３１の共振周波数が振動磁場の周波数と合うように変更され、振動磁場の周波数が変更されても効率よく受電を行うことができる。   On the power receiving unit 3 side, the power receiving antenna 31 receives the oscillating magnetic field generated by the power transmitting antenna 21. At that time, since the resonance frequency of the power receiving antenna 31 is changed to match the frequency of the oscillating magnetic field, power can be received efficiently. That is, the communication unit 34 receives the frequency information and outputs the frequency information to the resonance frequency control unit 33. The resonance frequency control unit 33 outputs a control signal to the resonance frequency changing unit 35 so that the resonance frequency of the power receiving antenna 31 is the same as the frequency of the frequency information. Thereby, the resonance frequency of the power receiving antenna 31 is changed to match the frequency of the oscillating magnetic field, and power can be received efficiently even if the frequency of the oscillating magnetic field is changed.

このように送電部２から受電部３に電力伝送を行う場合、送電部２が形成する磁界が受電部３で共振して結合することにより、送電部２から高い指向性で送電しなくても受電部３において効率よく受電することができ、送電部２と受電部３が離れて配置されていても磁界エネルギを高めなくても電力の伝送が可能となる。   When power is transmitted from the power transmitting unit 2 to the power receiving unit 3 in this way, the magnetic field formed by the power transmitting unit 2 resonates and couples with the power receiving unit 3 so that the power transmitting unit 2 does not transmit power with high directivity. The power receiving unit 3 can efficiently receive power, and even if the power transmitting unit 2 and the power receiving unit 3 are arranged apart from each other, power can be transmitted without increasing the magnetic field energy.

ここで、送電部２から受電部３に電力伝送を行っている時に、検知部２３が送電部２の周囲に形成される振動磁場を検知している。検知部２３で検知された振動磁場は、盗電判断部２４に入力される。盗電判断部２４は、振動磁場の状態に基づいて伝送されるべき電力が盗電されていないか否かを判断する。   Here, when power is transmitted from the power transmission unit 2 to the power reception unit 3, the detection unit 23 detects an oscillating magnetic field formed around the power transmission unit 2. The oscillating magnetic field detected by the detection unit 23 is input to the theft power determination unit 24. The power theft determination unit 24 determines whether the power to be transmitted is not stolen based on the state of the oscillating magnetic field.

例えば、盗電されてない通常の電力伝送時における振動磁場における波形を記憶しておき、検知時において検知された振動磁場の波形を記憶している通常時の波形と比較し、検知された振動磁場の波形が通常時の波形に対し振幅や位相などが所定値以上異なる場合に盗電されていると判断する。   For example, the waveform of the oscillating magnetic field at the time of normal power transmission that is not stolen is stored, and the waveform of the oscillating magnetic field detected at the time of detection is compared with the stored waveform at the normal time. Is determined to have been stolen when the amplitude, phase, etc. differ from the normal waveform by a predetermined value or more.

また、このとき送電部２が形成する振動磁場の周波数を変更し、その周波数変更後において検知される振動磁場の状態に基づいて盗電されているか否かを判断することが好ましい。例えば、図５（ａ）に示すように送電部２及び受電部３の送受電における振動磁場の周波数を変更すると、図５（ｂ）のように盗電者の受電機から発せられる振動磁場はその周波数変更に追従できない。このため、図５（ｃ）に示すように、検知部２３に検知される振動磁場は、異なる周波数の複数の振動磁場を重畳したようなものとなり、振幅などが通常の送受信時のものと異なるものとなる。この波形の相違に基づいて盗電を判断することができる。   Further, at this time, it is preferable to change the frequency of the oscillating magnetic field formed by the power transmission unit 2 and determine whether the power is stolen based on the state of the oscillating magnetic field detected after the frequency change. For example, when the frequency of the oscillating magnetic field in power transmission / reception of the power transmission unit 2 and the power receiving unit 3 is changed as shown in FIG. 5A, the oscillating magnetic field generated from the electric receiver of the thief as shown in FIG. Unable to follow the frequency change. For this reason, as shown in FIG.5 (c), the oscillating magnetic field detected by the detection part 23 becomes what overlaps the several oscillating magnetic field of a different frequency, and an amplitude etc. differ from the thing at the time of normal transmission / reception. It will be a thing. Theft can be determined based on the difference between the waveforms.

また、送電部２が形成する振動磁場の出力を変更し、その出力変更後において検知される振動磁場の状態に基づいて盗電されているか否かを判断してもよい。例えば、図６（ａ）に示すように送電部２及び受電部３における送受電における振動磁場の出力を低減すると、図６（ｂ）のように盗電者の受電機から発せられる振動磁場はその出力変更に追従できない。このため、図６（ｃ）に示すように、検知部２３に検知される振動磁場は、送電部２及び受電部３の送受電における振動磁場の出力状態より大きなものとなる。この振動磁場の振幅に基づいて盗電を判断することができる。   Further, the output of the oscillating magnetic field formed by the power transmission unit 2 may be changed, and it may be determined whether or not the power is stolen based on the state of the oscillating magnetic field detected after the output change. For example, when the output of the oscillating magnetic field in power transmission / reception in the power transmitting unit 2 and the power receiving unit 3 is reduced as shown in FIG. 6 (a), the oscillating magnetic field generated from the power receiving device of the thief as shown in FIG. Unable to follow the output change. For this reason, as illustrated in FIG. 6C, the oscillating magnetic field detected by the detection unit 23 is larger than the output state of the oscillating magnetic field in power transmission / reception of the power transmission unit 2 and the power reception unit 3. Theft can be determined based on the amplitude of the oscillating magnetic field.

図１において、盗電判断部２４により盗電されていると判断された場合には、報知部２５により無線エネルギ伝送装置１の使用者若しくは管理者にその旨が報知される。また、盗電判断部２４により盗電されていると判断された場合には、電力伝送を停止させることが好ましい。例えば、盗電判断部２４から盗電検出信号が送電発信部２２に出力され、送電発信部２２における交流電力の出力を停止することにより電力伝送が停止される。これにより、盗電されている場合にすぐに電力伝送が停止されるため、盗電を効果的に抑制できる。   In FIG. 1, when it is determined that the theft is determined by the theft power determination unit 24, the notification unit 25 notifies the user or administrator of the wireless energy transmission device 1 to that effect. Moreover, when it is determined by the theft power determination unit 24 that the power has been stolen, it is preferable to stop the power transmission. For example, a power theft detection signal is output from the power theft determination unit 24 to the power transmission transmission unit 22, and the power transmission is stopped by stopping the output of AC power in the power transmission transmission unit 22. Thereby, since power transmission is immediately stopped when the power is stolen, theft can be effectively suppressed.

以上のように、本実施形態に係る無線エネルギ伝送装置１及び無線エネルギ伝送方法によれば、送電部２から受電部３に電力伝送している際に検知部２３により検知された振動磁場の状態に基づいて盗電されているか否かを判断することにより、盗電されているか否かを容易に検出することができる。この場合、振動磁場の状態に基づいて盗電を検出するため、盗電者や盗電者の受電機などの存在を検出しなくても盗電を検出することができる。
As described above, according to the wireless energy transmission device 1 and the wireless energy transmission method according to the present embodiment, the state of the oscillating magnetic field detected by the detection unit 23 when power is transmitted from the power transmission unit 2 to the power reception unit 3. By determining whether or not the power is stolen based on the above, it is possible to easily detect whether or not the power is stolen. In this case, since the theft is detected based on the state of the oscillating magnetic field, it is possible to detect the theft without detecting the presence of a thief or a power receiver of the thief.

また、送電部２により発せられる振動磁場の出力状態を変更することにより、振動磁場の出力状態の変更後における振動磁場を検知し、振動磁場の出力変更に対し検知される振動磁場又は振動電場の変動が追従していない場合に盗電されていると判断することができる。   Further, by changing the output state of the oscillating magnetic field generated by the power transmission unit 2, the oscillating magnetic field after the change of the oscillating magnetic field output state is detected, and the oscillating magnetic field or the oscillating electric field detected in response to the change of the oscillating magnetic field output is detected. When the fluctuation does not follow, it can be determined that the power is being stolen.

また、送電部２により発せられる振動磁場の周波数を変更することにより、振動磁場の周波数の変更後における振動磁場を検知し、振動磁場の周波数変更に対し検知される振動磁場の変動が追従していない場合に盗電されていると判断することができる。   In addition, by changing the frequency of the oscillating magnetic field generated by the power transmission unit 2, the oscillating magnetic field after the change of the frequency of the oscillating magnetic field is detected, and the change in the oscillating magnetic field detected follows the change in the frequency of the oscillating magnetic field. If it is not, it can be determined that the power is stolen.

また、盗電されていると判断された場合に報知を行うことにより、管理者などが盗電されていることを認識することができる。   In addition, it is possible to recognize that an administrator or the like is being stolen by notifying when it is determined that the theft has been stolen.

さらに、盗電されていると判断された場合に電力伝送を停止することにより、盗電を効果的に抑制することができる。   Furthermore, it is possible to effectively suppress theft by stopping the power transmission when it is determined that theft has occurred.

なお、上述した実施形態は本発明に係る無線エネルギ伝送装置及び無線エネルギ伝送方法の一例を示すものである。本発明に係る無線エネルギ伝送装置及び無線エネルギ伝送方法は、このようなものに限られるものではなく、各請求項に記載した要旨を変更しないように実施形態に係る無線エネルギ伝送装置及び無線エネルギ伝送方法を変形し、又は他のものに適用したものであってもよい。
In addition, embodiment mentioned above shows an example of the wireless energy transmission apparatus and wireless energy transmission method which concern on this invention. The wireless energy transmission device and the wireless energy transmission method according to the present invention are not limited to the above, and the wireless energy transmission device and the wireless energy transmission according to the embodiments are not changed so as not to change the gist described in each claim. The method may be modified or applied to others.

例えば、本実施形態に係る無線エネルギ伝送装置及び無線エネルギ伝送方法では、通信部２３、３４を通じて振動磁場の周波数を送電部２から受電部３に送信するものについて説明したが、送電部２及び受電部３において予め周波数の変更を時刻などに応じて設定しておき、その設定に応じて振動磁場の周波数及び受電アンテナ３１の共振周波数を変更してもよい。
For example, in the wireless energy transmission device and the wireless energy transmission method according to the present embodiment, the transmission of the frequency of the oscillating magnetic field from the power transmission unit 2 to the power reception unit 3 through the communication units 23 and 34 has been described. The frequency change in the unit 3 may be set in advance according to the time or the like, and the frequency of the oscillating magnetic field and the resonance frequency of the power receiving antenna 31 may be changed according to the setting.

また、本実施形態に係る無線エネルギ伝送装置及び無線エネルギ伝送方法では、振動磁場により電力を伝送する場合について説明したが、送電部２により振動電場を形成しその振動電場により電力を伝送するものであってもよい。 In the wireless energy transmission device and the wireless energy transmission method according to the present embodiment, the case where electric power is transmitted by an oscillating magnetic field has been described. However, an oscillating electric field is formed by the power transmission unit 2 and electric power is transmitted by the oscillating electric field. There may be.

本発明の実施形態に係る無線エネルギ伝送装置の構成概要図である。1 is a schematic configuration diagram of a wireless energy transmission device according to an embodiment of the present invention. 図１の無線エネルギ伝送装置の変形例の説明図である。It is explanatory drawing of the modification of the wireless energy transmission apparatus of FIG. 図１の無線エネルギ伝送装置における送電周波数の説明図である。It is explanatory drawing of the power transmission frequency in the wireless energy transmission apparatus of FIG. 図１の無線エネルギ伝送装置における受電効率の説明図である。It is explanatory drawing of the power receiving efficiency in the wireless energy transmission apparatus of FIG. 図１の無線エネルギ伝送装置における振動磁場の周波数変更の説明図である。It is explanatory drawing of the frequency change of the oscillating magnetic field in the wireless energy transmission apparatus of FIG. 図１の無線エネルギ伝送装置における振動磁場の出力変更の説明図である。It is explanatory drawing of the output change of the oscillating magnetic field in the wireless energy transmission apparatus of FIG.

符号の説明Explanation of symbols

１…無線エネルギ伝送装置、２…送電部、３…受電部、２１…送電アンテナ、２２…送電発信部、２３…検知部、２４…盗電判断部、２５…報知部、２６…周波数制御部、２７…通信部、２８…共振周波数変更部、３１…受電アンテナ、３２…受電電力変換部、３３…共振周波数制御部、３４…通信部、３５…共振周波数変更部、Ａ…盗電者。   DESCRIPTION OF SYMBOLS 1 ... Wireless energy transmission apparatus, 2 ... Power transmission part, 3 ... Power reception part, 21 ... Power transmission antenna, 22 ... Power transmission transmission part, 23 ... Detection part, 24 ... Stealing judgment part, 25 ... Notification part, 26 ... Frequency control part, DESCRIPTION OF SYMBOLS 27 ... Communication part, 28 ... Resonance frequency change part, 31 ... Receiving antenna, 32 ... Receiving power conversion part, 33 ... Resonance frequency control part, 34 ... Communication part, 35 ... Resonance frequency change part, A ... Stealer.

Claims (8)

振動磁場又は振動電場を発生させる送電部と、
前記送電部の振動磁場又は振動電場を受電アンテナにより受けて電力に変換する受電部と、
前記送電部の周囲に形成される振動磁場又は振動電場を検知する検知手段と、
前記送電部により発せられる振動磁場又は振動電場の出力状態を変更する出力変更手段と、
前記送電部から前記受電部に電力伝送している際に前記検知手段により検知された振動磁場又は振動電場の状態に基づいて盗電されているか否かを判断する盗電判断手段と、
を備え、
前記盗電判断手段は、盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記出力変更手段により出力変更された際に、前記検知手段により検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断する、
無線エネルギ伝送装置。 A power transmission unit for generating an oscillating magnetic field or an oscillating electric field;
A power receiving unit that receives the oscillating magnetic field or the oscillating electric field of the power transmitting unit by a power receiving antenna and converts the power into power;
Detecting means for detecting an oscillating magnetic field or an oscillating electric field formed around the power transmission unit;
Output changing means for changing the output state of the oscillating magnetic field or oscillating electric field generated by the power transmission unit;
A theft determination means for determining whether or not the power is stolen based on the state of the oscillating magnetic field or the oscillating electric field detected by the detection means when power is transmitted from the power transmission unit to the power reception unit;
With
The stealing power determination means stores an oscillating magnetic field or a waveform in an oscillating electric field during normal power transmission that is not stolen, and the oscillating magnetic field detected by the detecting means when the output is changed by the output changing means. Or, it is determined whether or not the electric wave is stolen by comparing the waveform of the oscillating electric field with the waveform of the oscillating magnetic field or the oscillating electric field during normal power transmission.
Wireless energy transmission device. 振動磁場又は振動電場を発生させる送電部と、
前記送電部の振動磁場又は振動電場を受電アンテナにより受けて電力に変換する受電部と、
前記送電部の周囲に形成される振動磁場又は振動電場を検知する検知手段と、
前記送電部により発せられる振動磁場又は振動電場の周波数を変更する周波数変更手段と、
前記送電部から前記受電部に電力伝送している際に前記検知手段により検知された振動磁場又は振動電場の状態に基づいて盗電されているか否かを判断する盗電判断手段と、
を備え、
前記盗電判断手段は、盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記周波数変更手段により周波数変更された際に、前記検知手段により検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断する、
無線エネルギ伝送装置。 A power transmission unit for generating an oscillating magnetic field or an oscillating electric field;
A power receiving unit that receives the oscillating magnetic field or the oscillating electric field of the power transmitting unit by a power receiving antenna and converts the power into power;
Detecting means for detecting an oscillating magnetic field or an oscillating electric field formed around the power transmission unit;
Frequency changing means for changing the frequency of the oscillating magnetic field or oscillating electric field generated by the power transmission unit;
A theft determination means for determining whether or not the power is stolen based on the state of the oscillating magnetic field or the oscillating electric field detected by the detection means when power is transmitted from the power transmission unit to the power reception unit;
With
The stealing power determination means stores an oscillating magnetic field or a waveform in an oscillating electric field during normal power transmission that is not stolen, and the oscillating magnetic field detected by the detecting means when the frequency is changed by the frequency changing means. Or, it is determined whether or not the electric wave is stolen by comparing the waveform of the oscillating electric field with the waveform of the oscillating magnetic field or the oscillating electric field during normal power transmission.
Wireless energy transmission device. 前記盗電判断手段により盗電されていると判断された場合に報知を行う報知手段を備えたことを特徴とする請求項１又は２に記載の無線エネルギ伝送装置。   The wireless energy transmission device according to claim 1, further comprising a notification unit that performs notification when the power theft determination unit determines that the power has been stolen. 前記盗電判断手段により盗電されていると判断された場合に電力伝送を停止する停止手段を備えたことを特徴とする請求項１〜３のいずれか一項に記載の無線エネルギ伝送装置。   The wireless energy transmission device according to any one of claims 1 to 3, further comprising a stopping unit that stops power transmission when it is determined by the theft determination unit. 送電部により発生される振動磁場又は振動電場を受電部の受電アンテナにより受けて電力に変換する無線エネルギ伝送装置において、
前記送電部の周囲に形成される振動磁場又は振動電場を検知する検知手段と、
前記送電部から前記受電部に電力伝送している際に前記検知手段により検知された振動磁場又は振動電場の状態に基づいて盗電されているか否かを判断する盗電判断手段と、
を備え、
前記盗電判断手段は、盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記送電部により発せられる振動磁場又は振動電場の出力状態が変更された際に、前記検知手段により検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断する、
無線エネルギ伝送装置。 In the wireless energy transmission device that receives the oscillating magnetic field or the oscillating electric field generated by the power transmission unit by the power receiving antenna of the power receiving unit and converts it into electric power,
Detecting means for detecting an oscillating magnetic field or an oscillating electric field formed around the power transmission unit;
A theft determination means for determining whether or not the power is stolen based on the state of the oscillating magnetic field or the oscillating electric field detected by the detection means when power is transmitted from the power transmission unit to the power reception unit;
With
The stealing power determination means stores a waveform in an oscillating magnetic field or an oscillating electric field at the time of normal power transmission not being stolen, and when the output state of the oscillating magnetic field or the oscillating electric field generated by the power transmission unit is changed, Comparing the waveform of the oscillating magnetic field or oscillating electric field detected by the detecting means with the waveform of the oscillating magnetic field or oscillating electric field at the time of normal power transmission to determine whether or not theft has occurred;
Wireless energy transmission device. 送電部により発生される振動磁場又は振動電場を受電部の受電アンテナにより受けて電力に変換する無線エネルギ伝送装置において、
前記送電部の周囲に形成される振動磁場又は振動電場を検知する検知手段と、
前記送電部から前記受電部に電力伝送している際に前記検知手段により検知された振動磁場又は振動電場の状態に基づいて盗電されているか否かを判断する盗電判断手段と、
を備え、
前記盗電判断手段は、盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記送電部により発せられる振動磁場又は振動電場の周波数が変更された際に、前記検知手段により検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断する、
無線エネルギ伝送装置。 In the wireless energy transmission device that receives the oscillating magnetic field or the oscillating electric field generated by the power transmission unit by the power receiving antenna of the power receiving unit and converts it into electric power,
Detecting means for detecting an oscillating magnetic field or an oscillating electric field formed around the power transmission unit;
A theft determination means for determining whether or not the power is stolen based on the state of the oscillating magnetic field or the oscillating electric field detected by the detection means when power is transmitted from the power transmission unit to the power reception unit;
With
The stealing power determination means stores a waveform of an oscillating magnetic field or an oscillating electric field at the time of normal power transmission not being stolen, and when the frequency of the oscillating magnetic field or the oscillating electric field generated by the power transmission unit is changed, Comparing the waveform of the oscillating magnetic field or oscillating electric field detected by the detection means with the waveform of the oscillating magnetic field or oscillating electric field at the time of normal power transmission to determine whether or not theft is carried out,
Wireless energy transmission device. 送電部により発生される振動磁場又は振動電場を受電部の受電アンテナにより受けて電力に変換する無線エネルギ伝送方法において、
前記送電部の周囲に形成される振動磁場又は振動電場を検知し、
盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記送電部により発せられる振動磁場又は振動電場の出力状態が変更された際に、検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断する、
無線エネルギ伝送方法。 In a wireless energy transmission method for receiving an oscillating magnetic field or an oscillating electric field generated by a power transmission unit by a power receiving antenna of the power receiving unit and converting the electric power into power,
Detecting an oscillating magnetic field or an oscillating electric field formed around the power transmission unit,
The waveform of the oscillating magnetic field or oscillating electric field at the time of normal power transmission not being stolen is stored, and when the oscillating magnetic field generated by the power transmission unit or the output state of the oscillating electric field is changed, Compare the waveform of the oscillating electric field with the waveform of the oscillating magnetic field or oscillating electric field at the time of normal power transmission to determine whether or not it is stolen.
Wireless energy transmission method. 送電部により発生される振動磁場又は振動電場を受電部の受電アンテナにより受けて電力に変換する無線エネルギ伝送方法において、
前記送電部の周囲に形成される振動磁場又は振動電場を検知し、
盗電されていない通常の電力伝送時における振動磁場又は振動電場における波形を記憶しておき、前記送電部により発せられる振動磁場又は振動電場の周波数が変更された際に、検知された振動磁場又は振動電場の波形を通常の電力伝送時における振動磁場又は振動電場の波形と比較して盗電されているか否かを判断する、
無線エネルギ伝送方法。 In a wireless energy transmission method for receiving an oscillating magnetic field or an oscillating electric field generated by a power transmission unit by a power receiving antenna of the power receiving unit and converting the electric power into power,
Detecting an oscillating magnetic field or an oscillating electric field formed around the power transmission unit,
An oscillating magnetic field or an oscillating electric field waveform during normal power transmission that is not stolen is stored, and the oscillating magnetic field or vibration detected when the frequency of the oscillating magnetic field or oscillating electric field generated by the power transmission unit is changed is stored. Compare the waveform of the electric field with the waveform of the oscillating magnetic field or oscillating electric field at the time of normal power transmission, and determine whether or not the electric power is stolen.
Wireless energy transmission method.
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