JP2842374B2 - Power supply for biological measurement - Google Patents
Power supply for biological measurementInfo
- Publication number
- JP2842374B2 JP2842374B2 JP8117787A JP11778796A JP2842374B2 JP 2842374 B2 JP2842374 B2 JP 2842374B2 JP 8117787 A JP8117787 A JP 8117787A JP 11778796 A JP11778796 A JP 11778796A JP 2842374 B2 JP2842374 B2 JP 2842374B2
- Authority
- JP
- Japan
- Prior art keywords
- power
- power supply
- magnetic field
- living body
- induction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; 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
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
- H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; 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—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、魚、動物、人等の
動き回る生体にセンサを装着し、このセンサから空間へ
出力された生体信号を常時計測する生体計測技術に関
し、詳しくは、センサへ電力を供給する電力供給装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a living body measurement technique in which a sensor is attached to a moving body such as a fish, an animal, a person, and the like, and a biological signal output from the sensor to a space is constantly measured. The present invention relates to a power supply device that supplies power.
【０００２】[0002]
【従来の技術】動き回る生体に装着されたセンサから空
間へ出力された生体信号を常時計測する生体計測技術に
おいて、センサへ電力を供給するには、センサとともに
電池を生体に装着する技術が考えられる。2. Description of the Related Art In a living body measurement technique for constantly measuring a living body signal output to a space from a sensor attached to a moving living body, in order to supply power to the sensor, a technique of attaching a battery to the living body together with the sensor is considered. .
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな技術では次のような問題がある。生体に電池を取付
けることは、重量や体積の点で生体に負担となる。特に
魚のような小さい動物に電池を取付けると、その動物の
活動を大きく阻害することになる。However, such a technique has the following problems. Attaching a battery to a living body places a burden on the living body in terms of weight and volume. In particular, if a battery is attached to a small animal such as a fish, the activity of the animal is greatly impaired.
【０００４】[0004]
【発明の目的】そこで、本発明の目的は、生体に対して
負担が少なく、特に魚のような小さい動物に対しても影
響の少ない生体計測用電力供給装置（以下、単に「電力
供給装置」という。）を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a power supply apparatus for measuring a living body (hereinafter simply referred to as a "power supply apparatus") which has a small burden on a living body and has a small influence on a small animal such as a fish. )).
【０００５】[0005]
【課題を解決するための手段】本発明に係る電力供給装
置は、センサ側に設けられたピックアップコイル及び電
力検出手段と、電源側に設けられた誘導コイル及び電力
制御手段とから構成されている。複数の誘導コイルは、
電源の送電電力により互いに異なる方向に交流磁界を発
生するものであり、例えば、生体の可動範囲を取り囲む
ように円周状に配設され、かつ円周の中心方向へ交流磁
界を発生するように配設されている。ピックアップコイ
ルは、誘導コイルから発生した交流磁界により受電電力
を発生する。電力検出手段は、ピックアップコイルで発
生した受電電力の大きさに応じた電力信号を空間へ出力
する。電力制御手段は、電力検出手段から出力された電
力信号に基づき、受電電力が一定以上になるように又は
最大になるように、誘導コイルを切り換えて交流磁界を
発生させる。The power supply device according to the present invention comprises a pickup coil and power detection means provided on the sensor side, and an induction coil and power control means provided on the power supply side. . The multiple induction coils are
For generating an alternating magnetic field in directions different from each other by the transmitted power of the power supply, for example, it is arranged circumferentially so as to surround the movable range of the living body, and to generate an alternating magnetic field toward the center of the circumference. It is arranged. The pickup coil generates received power by an AC magnetic field generated from the induction coil. The power detection means outputs a power signal corresponding to the magnitude of the received power generated by the pickup coil to the space. The power control unit switches the induction coil based on the power signal output from the power detection unit to generate an AC magnetic field by switching the induction coil so that the received power is equal to or more than a certain value or is maximized.
【０００６】次に、本発明に係る電力供給装置の作用を
説明する。複数の誘導コイル及びピックアップコイル
は、それぞれ指向性を有している。そのため、誘導コイ
ルのいずれかから発生する交流磁界の方向とピックアッ
プコイルの最大利得の得られる方向とが一致したとき、
受電電力が最大となる。まず、ある誘導コイルから交流
磁界が発生しており、電力信号が一定以上になっている
とする。続いて、生体が動くことによりピックアップコ
イルの向きも変わるので、その誘導コイルから発生する
交流磁界の方向とピックアップコイルの最大利得の得ら
れる方向とが一致しなくなる。その結果、受電電力が低
下することにより、電力検出手段から出力される電力信
号も小さくなる。そこで、電力制御手段は、電力信号が
一定以下になると現在の交流磁界では電力供給が不十分
であると判断し、交流磁界の方向を順次切り換える。そ
して、別の誘導コイルから交流磁界を発生させた場合
に、電力信号が一定以上になると、電力制御手段はその
状態を維持する。Next, the operation of the power supply device according to the present invention will be described. Each of the plurality of induction coils and the pickup coil has directivity. Therefore, when the direction of the AC magnetic field generated from any of the induction coils matches the direction in which the maximum gain of the pickup coil is obtained,
The received power becomes the maximum. First, it is assumed that an AC magnetic field is generated from a certain induction coil, and the power signal is equal to or higher than a certain value. Subsequently, the direction of the pickup coil changes due to the movement of the living body, so that the direction of the AC magnetic field generated from the induction coil does not match the direction in which the maximum gain of the pickup coil is obtained. As a result, the received power is reduced, so that the power signal output from the power detection unit is also reduced. Therefore, when the power signal becomes equal to or less than a certain value, the power control unit determines that the current AC magnetic field does not supply enough power, and sequentially switches the direction of the AC magnetic field. When an AC magnetic field is generated from another induction coil and the power signal exceeds a certain level, the power control means maintains that state.
【０００７】ところで、電波を用いて電力を供給する場
合は、例えばアンテナを小さくするため等の理由によ
り、数ＧＨｚという高い周波数を用いる必要がある。し
かし、水による損失は周波数の２乗に比例することか
ら、水中で電波を用いて電力を供給することは実際には
不可能である。これに対して、本発明に係る電力供給装
置は、交流磁界を用いて電力を供給することにより、周
波数を十分に低くできるので、水中での電力損失は極め
て少ない。When power is supplied using radio waves, it is necessary to use a frequency as high as several GHz for reasons such as reducing the size of the antenna. However, since the loss due to water is proportional to the square of the frequency, it is practically impossible to supply power using radio waves in water. On the other hand, the power supply device according to the present invention can sufficiently lower the frequency by supplying power using the AC magnetic field, and thus the power loss in water is extremely small.
【０００８】[0008]
【発明の実施の形態】図１及び図２は、本発明に係る電
力供給装置の第一実施形態を示すブロック図である。以
下、この図面に基づき説明する。1 and 2 are block diagrams showing a first embodiment of a power supply device according to the present invention. Hereinafter, description will be made based on this drawing.
【０００９】本実施形態の電力供給装置は、電源１０側
に設けられた誘導コイル１２１〜１２８及び電力制御手
段１４と、センサ１６側に設けられたピックアップコイ
ル１８及び電力検出手段２０とから構成されている。誘
導コイル１２１〜１２８は、電源１０の送電電力ａによ
り互いに異なる方向に交流磁界φを発生するものであ
り、生体Ｂの可動範囲を取り囲むように円周状に配設さ
れ、かつ円周の中心方向へ交流磁界φを発生するように
配設されている。ピックアップコイル１８は、誘導コイ
ル１２１〜１２８から発生した交流磁界φにより受電電
力ｂを発生する。電力検出手段２０は、ピックアップコ
イル１８で発生した受電電力ｂの大きさに応じた電力信
号ｃを空間へ出力する。電力制御手段１４は、電力検出
手段２０から出力された電力信号ｃに基づき、受電電力
ｂが一定以上になるように、誘導コイル１２１〜１２８
を切り換えて交流磁界φを発生させる。The power supply device according to the present embodiment comprises induction coils 121 to 128 and power control means 14 provided on the power supply 10 side, and a pickup coil 18 and power detection means 20 provided on the sensor 16 side. ing. The induction coils 121 to 128 generate AC magnetic fields φ in directions different from each other by the transmitted power a of the power supply 10, are arranged circumferentially so as to surround the movable range of the living body B, and have the center of the circumference. It is arranged to generate an alternating magnetic field φ in the direction. Pickup coil 18 generates received power b using an alternating magnetic field φ generated from induction coils 121 to 128. The power detection means 20 outputs a power signal c corresponding to the magnitude of the received power b generated by the pickup coil 18 to the space. The power control unit 14 controls the induction coils 121 to 128 based on the power signal c output from the power detection unit 20 so that the received power b becomes equal to or more than a certain value.
To generate an AC magnetic field φ.
【００１０】センサ１６は、動き回る魚である生体Ｂに
装着されており、例えば神経電位等の生体信号ｓを電極
から検出する。電力検出手段２０は、ピックアップコイ
ル１８で発生した受電電力ｂを直流電圧ｄに変換する直
流安定化回路２０１と、生体信号ｓを増幅及びディジタ
ル変換するとともに送信用信号に変調する送信回路２０
２と、送信回路２０２で変調された生体信号ｓを電波に
より空間へ出力する送信アンテナ２０３とを備えてい
る。直流電圧ｄは、センサ１６及び送信回路２０２へ供
給される。電力信号ｃは、生体信号ｓの出力レベルであ
る。すなわち、受電電力ｂが小さければ、センサ１６及
び送信回路２０２へ供給される電力も小さくなるので、
生体信号ｓの出力レベル（電力信号ｃ）も小さくなる。The sensor 16 is mounted on a living body B which is a moving fish, and detects a biological signal s such as a nerve potential from an electrode. The power detecting means 20 includes a DC stabilizing circuit 201 for converting the received power b generated by the pickup coil 18 into a DC voltage d, and a transmitting circuit 20 for amplifying and digitally converting the biological signal s and modulating it to a transmission signal.
2 and a transmission antenna 203 for outputting the biological signal s modulated by the transmission circuit 202 to the space by radio waves. The DC voltage d is supplied to the sensor 16 and the transmission circuit 202. The power signal c is the output level of the biological signal s. That is, if the received power b is small, the power supplied to the sensor 16 and the transmission circuit 202 is also small.
The output level (power signal c) of the biological signal s also decreases.
【００１１】電源１０は、例えば数100kHzの交流の送電
電力ａを発生する。電力制御手段１４は、誘導コイル１
２１〜１２８に対応して設けられ送電電力ａを誘導コイ
ル１２１〜１２８へ供給するスイッチ１４１〜１４８
と、電力信号ｃ及び生体信号ｓを受信する受信アンテナ
１４９と、電力信号ｃの大きさが一定以上となるように
切り換え信号ｅ1 〜ｅ8 をスイッチ１４１〜１４８へ出
力する切り換え制御回路１５０と、受信アンテナ１４９
で受信された電力信号ｃ及び生体信号ｓを増幅及び復調
する受信回路１５１とを備えている。スイッチ１４１〜
１４８は、トランジスタ又はリレー等であり、切り換え
信号ｅ1 〜ｅ8 に基づき開閉する。切り換え制御回路１
５０は、例えばマイクロコンピュータ及びデコーダによ
って構成されている。ここで、切り換え制御回路１５０
から切り換え信号ｅ8 が出力されると、スイッチ１４８
のみが閉成し、スイッチ１４１〜１４７は開成したまま
である。したがって、図示するように誘導コイル１２８
から交流磁界φが発生する。切り換え信号ｅ1 〜ｅ7 も
それぞれのスイッチ１４１〜１４７のみを閉成する。ま
た、受信回路１５１で増幅・復調された生体信号ｓは計
測器３０へ出力される。The power supply 10 generates, for example, an AC transmission power a of several hundred kHz. The power control means 14 controls the induction coil 1
Switches 141 to 148 provided corresponding to 21 to 128 to supply transmission power a to induction coils 121 to 128
A reception antenna 149 that receives the power signal c and the biological signal s, and a switching control circuit 150 that outputs switching signals e 1 to e 8 to the switches 141 to 148 so that the magnitude of the power signal c is equal to or greater than a certain value. , Receiving antenna 149
And a receiving circuit 151 that amplifies and demodulates the power signal c and the biological signal s received in the step S1. Switches 141-
148 is a transistor or a relay or the like, to open and close on the basis of the switching signal e 1 to e 8. Switching control circuit 1
The reference numeral 50 includes, for example, a microcomputer and a decoder. Here, the switching control circuit 150
When the switching signal e 8 is output from the
Only the switches are closed, and the switches 141 to 147 remain open. Therefore, as shown, the induction coil 128
Generates an AC magnetic field φ. The switching signals e 1 to e 7 also close only the respective switches 141 to 147. The biological signal s amplified and demodulated by the receiving circuit 151 is output to the measuring device 30.
【００１２】次に、本実施形態の電力供給装置の作用を
説明する。Next, the operation of the power supply device of the present embodiment will be described.
【００１３】誘導コイル１２１〜１２８及びピックアッ
プコイル１８は、それぞれ指向性を有している。そのた
め、誘導コイル１２１〜１２８のいずれかから発生する
交流磁界φの方向とピックアップコイル１８の最大利得
の得られる方向とが一致したとき、受電電力ｂが最大と
なる。The induction coils 121 to 128 and the pickup coil 18 each have directivity. Therefore, when the direction of AC magnetic field φ generated from any of induction coils 121 to 128 matches the direction in which the maximum gain of pickup coil 18 is obtained, received power b becomes maximum.
【００１４】まず、誘導コイル１２６，１２７間で交流
磁界φが発生しており、電力信号ｃが一定以上になって
いるとする。続いて、生体Ｂが動くことによりピックア
ップコイル１８の向きも変わるので、誘導コイル１２
６，１２７間で発生する交流磁界φの方向とピックアッ
プコイル１８の最大利得の得られる方向とが一致しなく
なる。その結果、受電電力ｂが低下することにより、セ
ンサ１６及び送信回路２０２が十分に動作しなくなるの
で、電力信号ｃも小さくなる。そこで、切り換え制御回
路１５０は、電力信号ｃが一定以下になると現在の交流
磁界φでは電力供給が不十分であると判断し、交流磁界
φの方向を順次切り換える。そして、誘導コイル１２
６，１２８間で交流磁界φを発生させた場合に、電力信
号ｃが一定以上になると、切り換え制御回路１５０はそ
の状態を維持する。生体Ｂの動きに合わせて、上記手順
を繰り返すことにより、ピックアップコイル１８に対し
て最適な交流磁界φを発生できる。このとき、誘導コイ
ル１２１〜１２８の全てではなくいずれか二個のみを通
電しているので、低消費電力化が図れる。First, it is assumed that an AC magnetic field φ is generated between the induction coils 126 and 127, and the power signal c is equal to or higher than a certain value. Subsequently, the movement of the living body B changes the direction of the pickup coil 18, so that the induction coil 12
6, 127, and the direction in which the maximum gain of the pickup coil 18 is obtained does not match. As a result, the reception power b decreases, and the sensor 16 and the transmission circuit 202 do not operate sufficiently, so that the power signal c also decreases. Therefore, the switching control circuit 150 determines that the power supply is insufficient with the current AC magnetic field φ when the power signal c becomes equal to or less than a certain value, and sequentially switches the direction of the AC magnetic field φ. And the induction coil 12
When the power signal c becomes equal to or more than a certain value when the AC magnetic field φ is generated between 6, 128, the switching control circuit 150 maintains that state. By repeating the above procedure in accordance with the movement of the living body B, an optimal AC magnetic field φ can be generated for the pickup coil 18. At this time, since only two of the induction coils 121 to 128 are energized, not all of them, power consumption can be reduced.
【００１５】図３及び図４は、本発明に係る電力供給装
置の第二実施形態を示すブロック図である。以下、この
図面に基づき説明する。ただし、図１及び図２と同一部
分は同一符号を付すことにより重複説明を省略する。FIGS. 3 and 4 are block diagrams showing a second embodiment of the power supply device according to the present invention. Hereinafter, description will be made based on this drawing. However, the same portions as those in FIGS. 1 and 2 are denoted by the same reference numerals, and redundant description will be omitted.
【００１６】本実施形態の電力供給装置では、第一実施
形態の電力供給装置に対して、誘導コイル１２１〜１２
８に直列共振用のコンデンサ３２１〜３２２が付設さ
れ、ピックアップコイル１８に並列共振用のコンデンサ
１８１が付設され、送信アンテナ２０３及び受信アンテ
ナ１４９の代わりに発光ダイオード３４及びフォトダイ
オード３６が用いられている。電力信号ｃは、発光ダイ
オード３４の光量である。本実施形態によれば、直列共
振用のコンデンサ３２１〜３２２及び並列共振用のコン
デンサ１８１を付設したことにより、送電電力ａ及び受
電電力ｂの周波数を安定化できるので、ノイズの少ない
電力を供給できる。また、発光ダイオード３４及びフォ
トダイオード３６を用い、電力信号ｃ及び生体信号ｓを
光としたことにより、水中での減衰を電波に比べて小さ
くできる。他の事項は、第一実施形態とほぼ同じである
ので説明を省略する。The power supply device of the present embodiment differs from the power supply device of the first embodiment in that induction coils 121 to 12 are provided.
8, capacitors 321 to 322 for series resonance are provided, a capacitor 181 for parallel resonance is provided for the pickup coil 18, and a light emitting diode 34 and a photodiode 36 are used instead of the transmission antenna 203 and the reception antenna 149. . The power signal c is the light amount of the light emitting diode 34. According to this embodiment, since the series resonance capacitors 321 to 322 and the parallel resonance capacitor 181 are provided, the frequencies of the transmission power a and the reception power b can be stabilized, so that power with less noise can be supplied. . In addition, by using the light emitting diode 34 and the photodiode 36 to convert the power signal c and the biological signal s to light, attenuation in water can be reduced as compared with radio waves. The other items are almost the same as those of the first embodiment, and the description is omitted.
【００１７】なお、本発明は、いうまでもなく、上記実
施形態に限定されるものではない。例えば、誘導コイル
は二個ではなく一個のみに通電するようにしてもよい。
この場合は、より低消費電力化を図ることができる。ピ
ックアップコイルは、一個ではなく、二個又は三個とし
それぞれを直交させてもよい。この場合は、より安定し
た電力供給が可能となる。また、交流磁界のの発生方向
を記録しておくと、生体の動作を把握することが可能に
なる。It is needless to say that the present invention is not limited to the above embodiment. For example, only one induction coil may be energized instead of two.
In this case, lower power consumption can be achieved. The number of pickup coils may be two or three instead of one, and may be orthogonal to each other. In this case, more stable power supply is possible. In addition, if the direction in which the AC magnetic field is generated is recorded, the movement of the living body can be grasped.
【００１８】[0018]
【発明の効果】本発明に係る電力供給装置によれば、複
数の誘導コイルを切り換えて異なる方向に交流磁界を発
生させることにより、生体に装着されたピックアップコ
イルで得られる受電電力を常に一定以上にできるので、
生体がどのように動いても常に生体信号を非接触で検出
できる。また、電池を生体に取り付ける必要がないの
で、生体の負担を軽減でき、特に魚のような小さい動物
に対する影響も低減できる。さらに、複数の誘導コイル
の全てではなくいずれかに通電すればよいので、低消費
電力化を図ることができる。According to the power supply apparatus of the present invention, the plurality of induction coils are switched to generate AC magnetic fields in different directions, so that the received power obtained by the pickup coil attached to the living body is always equal to or more than a certain value. So you can
No matter how the living body moves, the biological signal can always be detected in a non-contact manner. Further, since it is not necessary to attach the battery to the living body, the burden on the living body can be reduced, and the effect on small animals such as fish can be reduced. Furthermore, since it is sufficient to supply current to any one of the plurality of induction coils instead of all of them, power consumption can be reduced.
【００１９】本発明に係る電力供給装置は、電波を用い
て電力を供給する場合に比べて、水中での電力損失を極
めて少なくできるので、水中での生体計測に好適であ
る。The power supply device according to the present invention can reduce the power loss in water significantly as compared with the case where power is supplied using radio waves, and is suitable for underwater biological measurement.
【図１】本発明に係る電力供給装置の第一実施形態を示
すブロック図である。FIG. 1 is a block diagram showing a first embodiment of a power supply device according to the present invention.
【図２】本発明に係る電力供給装置の第一実施形態を示
すブロック図である。FIG. 2 is a block diagram showing a first embodiment of a power supply device according to the present invention.
【図３】本発明に係る電力供給装置の第二実施形態を示
すブロック図である。FIG. 3 is a block diagram showing a second embodiment of the power supply device according to the present invention.
【図４】本発明に係る電力供給装置の第二実施形態を示
すブロック図である。FIG. 4 is a block diagram showing a second embodiment of the power supply device according to the present invention.
１０ 電源 １２１〜１２８ 誘導コイル １４ 電力制御手段 １６ センサ １８ ピックアップコイル ２０ 電力検出手段 ａ 送電電力 ｂ 受電電力 ｃ 電力信号 φ 交流磁界 Ｂ 生体 Reference Signs List 10 power supply 121 to 128 induction coil 14 power control means 16 sensor 18 pickup coil 20 power detection means a transmission power b reception power c power signal φ AC magnetic field B living body
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) A61B 5/00 - 5/22 A61N 1/00 - 1/44 H02J 17/00 H04B 5/00 - 5/06──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) A61B 5/00-5/22 A61N 1/00-1/44 H02J 17/00 H04B 5/00-5 / 06
Claims (3)
て、電源の送電電力を非接触で供給する電力供給装置で
あって、 前記送電電力により互いに異なる方向に交流磁界を発生
する複数の誘導コイルと、これらの誘導コイルから発生
した交流磁界により受電電力を発生するピックアップコ
イルと、このピックアップコイルで発生した受電電力の
大きさに応じた電力信号を空間へ出力する電力検出手段
と、この電力検出手段から出力された電力信号に基づき
前記受電電力が一定以上になるように前記誘導コイルを
切り換えて前記交流磁界を発生させる電力制御手段とを
備え、 前記ピックアップコイル及び前記電力検出手段が前記セ
ンサ側に設けられ、前記誘導コイル及び前記電力制御手
段が前記電源側に設けられた、生体計測用電力供給装
置。1. A power supply device for non-contactly supplying power transmitted from a power source to a sensor mounted on a living body that moves around, wherein a plurality of induction coils for generating AC magnetic fields in mutually different directions by the transmitted power. A pickup coil for generating a received power by an AC magnetic field generated from these induction coils; a power detection unit for outputting a power signal corresponding to the magnitude of the received power generated by the pickup coil to a space; Power control means for generating the AC magnetic field by switching the induction coil based on the power signal output from the means so that the received power is equal to or higher than a predetermined value, wherein the pickup coil and the power detection means are provided on the sensor side. Wherein the induction coil and the power control means are provided on the power supply side.
動範囲を取り囲むように円周状に配設され、かつ当該円
周の中心方向へ交流磁界を発生するように配設された、
請求項１記載の生体計測用電力供給装置。2. The plurality of induction coils are arranged circumferentially so as to surround a movable range of the living body, and are arranged so as to generate an AC magnetic field in a center direction of the circumference.
The power supply for living body measurement according to claim 1.
から送信された信号に基づき前記受電電力が最大になる
ように、前記誘導コイルを切り換えて前記交流磁界を発
生させる、請求項１記載の生体計測用電力供給装置。3. The power control unit according to claim 1, wherein the power control unit generates the AC magnetic field by switching the induction coil based on a signal transmitted from the power detection unit so that the received power is maximized. Biometric power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8117787A JP2842374B2 (en) | 1996-05-13 | 1996-05-13 | Power supply for biological measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8117787A JP2842374B2 (en) | 1996-05-13 | 1996-05-13 | Power supply for biological measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09308140A JPH09308140A (en) | 1997-11-28 |
| JP2842374B2 true JP2842374B2 (en) | 1999-01-06 |
Family
ID=14720307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8117787A Expired - Lifetime JP2842374B2 (en) | 1996-05-13 | 1996-05-13 | Power supply for biological measurement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2842374B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5106237B2 (en) * | 2008-05-02 | 2012-12-26 | オリンパス株式会社 | Wireless power supply system |
| DE102011113740A1 (en) * | 2011-09-15 | 2013-03-21 | Forschungsverbund Berlin E.V. | Inductive energy transmission device for mobile sensor unit utilized for detecting e.g. heart rate of fish, has base unit comprising control circuit for correcting frequency of oscillating circuit such that voltage at capacitor is maximized |
| WO2014129531A1 (en) * | 2013-02-20 | 2014-08-28 | 日本電気株式会社 | Power transmission system, transmission apparatus, receiving apparatus, and power transmission method |
-
1996
- 1996-05-13 JP JP8117787A patent/JP2842374B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09308140A (en) | 1997-11-28 |
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