JPH04127845A - Moving body identifying unit - Google Patents

Moving body identifying unit

Info

Publication number
JPH04127845A
JPH04127845A JP2248266A JP24826690A JPH04127845A JP H04127845 A JPH04127845 A JP H04127845A JP 2248266 A JP2248266 A JP 2248266A JP 24826690 A JP24826690 A JP 24826690A JP H04127845 A JPH04127845 A JP H04127845A
Authority
JP
Japan
Prior art keywords
secondary battery
transponder
magnetic field
moving
field generator
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.)
Pending
Application number
JP2248266A
Other languages
Japanese (ja)
Inventor
Teruo Sakakibara
榊原 輝雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP2248266A priority Critical patent/JPH04127845A/en
Publication of JPH04127845A publication Critical patent/JPH04127845A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304Overcurrent protection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

PURPOSE:To charge a secondary battery with power generated in a responder by moving a moving body in the vicinity of a fixed magnet or the like. CONSTITUTION:When a responder 1 moves together with a moving body and passes through the vicinity of a field generator 13, flux generated from magnet pieces 13a,... in the field generator 13 penetrates through the core 12a of an electromagnetic induction coil 12 in the responder 1. Since the flux penetrating through the core 12a varies continuously when the responder 1 moves in the vicinity of the field generator 13, an AC power is induced in the electromagnetic induction coil 12. Current induced through the electromotive force is then converted through a rectifier 9 into DC current for charging a secondary battery 5 through a resistor 10.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、所謂IDプレートシステム等によって移動体
を識別し各種の管理を行う移動体識別装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a mobile object identification device that identifies a mobile object and performs various types of management using a so-called ID plate system or the like.

(従来の技術) IDプレートンステムは、管理設備側に固定された質問
器が、通信エリア内を通過する各移動体に取り付けられ
た応答器との間でマイクロ波による通信を行うことによ
り、この移動体を無接触により識別することができるよ
うになっている。そして、この応答器は、移動体と共に
工場内やその他さまざまな環境中を移動することになる
ので、耐塵、耐湿等の耐環境性を得るために容器に収納
されて密閉されている。
(Prior art) The ID platen stem uses microwave communication between an interrogator fixed on the management equipment side and a transponder attached to each mobile object passing through the communication area. It is now possible to identify moving objects without contact. Since this transponder will be moved together with the moving body in a factory or in various other environments, it is housed in a sealed container in order to have environmental resistance such as dust resistance and humidity resistance.

上記従来の応答器1は、例えば第2図に示すように、こ
の応答器1を覆う密閉容器2内に通信制御回路3と共に
、リチウム電池等からなる一次電池4を収納し、この−
次電池4から通信制御回路3に電源を供給するようにな
っていた。
As shown in FIG. 2, for example, the conventional transponder 1 has a communication control circuit 3 and a primary battery 4 such as a lithium battery housed in an airtight container 2 that covers the transponder 1.
Power was supplied to the communication control circuit 3 from the secondary battery 4.

また、第3図に示すように、密閉容器2内に収納したニ
ラカド(NiCd)?4池等からなる二次電池5によっ
て通信制御回路3に電源を供給すると共に、この二次電
池5を電磁誘導によって外部から充電するようにしたも
のもあった。この電磁誘導による充電回路は、発振器6
から交流電流が供給される一次側コイル7を移動体の移
動経路上に設置すると共に、応答器1の密閉容器2内に
二次側コイル8を設け、この二次側コイル8を整流器9
と充電電流を制限するための抵抗器10とを介して二次
電池5に接続したものである。このため、応答器1が移
動体と共にこの一次側コイル7に接近すると、密閉容器
2内の二次側フィル8が磁気的に結合されて誘導電流を
発生し、整流器9によって直流変換されて二次電池5が
充電される。
In addition, as shown in FIG. In some devices, power is supplied to the communication control circuit 3 by a secondary battery 5 consisting of four batteries, etc., and the secondary battery 5 is externally charged by electromagnetic induction. This charging circuit using electromagnetic induction uses an oscillator 6
A primary coil 7 to which alternating current is supplied from is installed on the moving path of the moving body, and a secondary coil 8 is provided in the sealed container 2 of the responder 1, and this secondary coil 8 is connected to a rectifier 9.
It is connected to the secondary battery 5 via a resistor 10 for limiting the charging current. Therefore, when the transponder 1 approaches the primary coil 7 together with the moving object, the secondary fill 8 in the closed container 2 is magnetically coupled to generate an induced current, which is converted into DC by the rectifier 9 and converted into a DC current. Next battery 5 is charged.

即ち、発振器6からのエネルギーがコイル7.8を介し
て応答器1側に供給され充電が行われることになる。な
お、二次側フィル8に誘起される電圧は、発振器6が供
給する電圧とフィル7.8の巻線比とに応じて一定に保
たれるので、二次電池5の充電中は、この二次側コイル
8からも整流器9を介して通信制御回路3に電源が供給
されるようになっている。また、二次電池5は、抵抗器
10を回避するために、ダイオード11を介して通信制
御回路3に電源を供給するようになっている。
That is, energy from the oscillator 6 is supplied to the transponder 1 side via the coil 7.8, and charging is performed. Note that the voltage induced in the secondary fill 8 is kept constant depending on the voltage supplied by the oscillator 6 and the winding ratio of the fill 7.8. Power is also supplied from the secondary coil 8 to the communication control circuit 3 via the rectifier 9. Further, the secondary battery 5 is configured to supply power to the communication control circuit 3 via a diode 11 in order to avoid the resistor 10.

(発明が解決しようとする課題) ところが、上記−次電池4を用いた従来の応答器1ては
、この−次電池4が放電し終えると使用することができ
なくなるため、このような電池切れを起こさないように
、常に使用時間等を詳細に管理しておく必要が生じると
いう問題があった。
(Problem to be Solved by the Invention) However, the conventional transponder 1 using the second-order battery 4 cannot be used once the second-order battery 4 has finished discharging. There was a problem in that it was necessary to constantly manage the usage time etc. in detail so as not to cause problems.

また、二次電池5を用いた従来の応答器1の場合にも、
二次側コイル8が一次側コイル7に十分に接近した状態
である程度の時間が経過しなければ十分な充電が行えな
いので、移動体を随時−次側コイル7付近で停止させ得
るようなシステムでなければ使用することができないと
いう問題があった。しかも、通常は発振器6や二次側コ
イル8を複数箇所に設置する必要があるため、配線工事
に手間が掛かり保守も煩わしいものとなっていた。
Also, in the case of the conventional transponder 1 using the secondary battery 5,
Since sufficient charging cannot be performed unless the secondary coil 8 is sufficiently close to the primary coil 7 for a certain period of time, the system allows the mobile object to be stopped near the primary coil 7 at any time. There was a problem that it could not be used otherwise. Moreover, since it is usually necessary to install the oscillator 6 and the secondary coil 8 at multiple locations, wiring work is time-consuming and maintenance is also troublesome.

さらに、二次側コイル8からの高エネルギーの電磁輻射
が付近の機器等に障害を与えるおそれがあるという問題
も生じていた。
Furthermore, there has been a problem in that the high-energy electromagnetic radiation from the secondary coil 8 may cause damage to nearby equipment.

本発明は、上記事情に鑑み、固定された磁石等の近傍を
移動体が移動することにより応答器内で発電を行い二次
′F4/li!に充電することができる移動体識別装置
を提供することを目的としている。
In view of the above-mentioned circumstances, the present invention generates electricity within a transponder by moving a moving body near a fixed magnet, etc., and generates secondary 'F4/li! The purpose of the present invention is to provide a mobile object identification device that can be recharged.

(課題を解決するための手段) 本発明の移動体識別装置は、移動体に取り付けられた応
答器の通信制御回路が内部の二次電池から電源の供給を
受けて管理設備側に固定された質問器との間で通信を行
う移動体識別装置であって、移動体の移動経路上に固定
磁界を発生する磁界発生器が設置されると共に、該応答
器内部に電磁調厚コイルと、該電磁調厚コイルによって
生じた誘導電流を直流に変換して二次電池に供給する整
流回路とを備えており、そのことにより上記目的が達成
される。
(Means for Solving the Problems) In the mobile object identification device of the present invention, a communication control circuit of a transponder attached to a mobile object receives power from an internal secondary battery and is fixed to a management equipment side. A mobile object identification device that communicates with an interrogator, in which a magnetic field generator that generates a fixed magnetic field is installed on the moving path of the moving object, and an electromagnetic thickness adjustment coil and an electromagnetic thickness coil are installed inside the transponder. The rectifier circuit is provided with a rectifier circuit that converts the induced current generated by the electromagnetic thickness adjustment coil into direct current and supplies the direct current to the secondary battery, thereby achieving the above object.

(作用) 上記構成により、移動体が磁界発生器の近傍を移動する
と、その固定磁界の磁束が応答器内の電磁誘導コイルを
貫き移動と共に変化する。すると、電磁誘導現象により
電磁調厚コイルに起電力が発生し、これによって生じた
誘導電流を整流回路を介して二次電池に供給することが
できる。即ち、応答器は、移動体の移動のエネルギーを
電力に変換して二次電池への充電を行うことになる。
(Function) With the above configuration, when the movable body moves near the magnetic field generator, the magnetic flux of the fixed magnetic field passes through the electromagnetic induction coil in the responder and changes as the movable body moves. Then, an electromotive force is generated in the electromagnetic thickness adjustment coil due to the electromagnetic induction phenomenon, and the induced current generated thereby can be supplied to the secondary battery via the rectifier circuit. That is, the transponder converts the energy of movement of the mobile object into electric power to charge the secondary battery.

この結果、移動体が応答器の二次電池に充電を行うため
だけに停止するような必要がなくなり、移動体識別装置
のどのようなシステムにおいても移動体が移動しながら
無駄な(充電を行うことができるようになる。また、磁
界発生器は固定磁界を発生するものなので、電磁石を使
用した場合には発振器のような複雑な回路が不要となり
、永久磁石を使用すれば電源の供給も必要なくなるので
、設置工事や保守が容易となる。しかも、移動体の移動
方向に沿って磁石のN極とS極とを交互に多数長い距離
にわたって設置することも容易となるので、移動しなが
らも十分な充電が可能となる。
As a result, there is no need for the mobile object to stop just to charge the secondary battery of the transponder, and in any system of mobile object identification devices, the mobile object does not have to waste time (charging) while moving. In addition, since a magnetic field generator generates a fixed magnetic field, if an electromagnet is used, a complicated circuit such as an oscillator is not required, and if a permanent magnet is used, a power supply is also required. This makes installation work and maintenance easier.Furthermore, it is also easy to install multiple N and S poles of magnets alternately over a long distance along the moving direction of the moving object, so even while moving. Sufficient charging becomes possible.

さらに、磁界発生器は、固定磁界を発生するものである
ため、電磁輻射によって付近の機器等に障害を与えるよ
うなおそれも生じない。
Furthermore, since the magnetic field generator generates a fixed magnetic field, there is no fear that electromagnetic radiation will cause damage to nearby equipment.

(実施例) 本発明を実施例について以下に説明する。(Example) The invention will now be described with reference to examples.

第1図は本発明の一実施例を示すものであって、IDプ
レート/ステムにおける応答器の電気回路と磁界発生器
の構成を示す平面図である。なお、前記第2図及び第3
図に示した従来例と同様の機能を有する構成部材には同
じ符号を付する。
FIG. 1 shows one embodiment of the present invention, and is a plan view showing the configuration of an electric circuit of a transponder and a magnetic field generator in an ID plate/stem. In addition, the above-mentioned figures 2 and 3
Components having the same functions as those of the conventional example shown in the figures are given the same reference numerals.

応答器1は、耐環境性を得るために密閉容器2によって
覆われ、図示しない移動体に取り付けられてこの移動体
と共に移動するようになっている。
The responder 1 is covered with a closed container 2 to obtain environmental resistance, and is attached to a moving body (not shown) so as to move together with the moving body.

応答器1の密閉容器2内には、図示しない質問器との間
でマイクロ波による通信を行うための通信制御回路3と
、この通信制御回路3に電源を供給するためにダイオー
ド11を介して接続された二次電池5とが収納されてい
る。この二次電池5は、ニッカド電池等からなる充電可
能な蓄電池である。
Inside the sealed container 2 of the transponder 1, there is a communication control circuit 3 for performing microwave communication with an interrogator (not shown), and a diode 11 for supplying power to the communication control circuit 3. A connected secondary battery 5 is housed therein. This secondary battery 5 is a rechargeable storage battery made of a NiCd battery or the like.

また、この密閉容器2内には、二次電池5に整流器9と
抵抗器10とを介して接続された電磁誘導フィル12も
収納されている。電磁誘導コイル12は、フの字形状の
強磁性体からなるコア12aにコイル12bを巻回した
ものであり、コア12aの両端面が密閉容器2における
一方の側面に近接するように配置されている。整流器9
は、この電磁誘導フィル12て生じた交流の誘導電流を
直流に変換する回路であり、図示のような半波整流を行
うものの他、全波整流器を用いてもよい。抵抗器10は
、整流器9から二次電池5に供給される充電電流を制限
するための電流制限抵抗である。
Further, an electromagnetic induction filter 12 connected to the secondary battery 5 via a rectifier 9 and a resistor 10 is also housed in the airtight container 2 . The electromagnetic induction coil 12 has a coil 12b wound around a fold-back-shaped core 12a made of ferromagnetic material, and is arranged so that both end surfaces of the core 12a are close to one side surface of the closed container 2. There is. Rectifier 9
is a circuit that converts the alternating current induced current generated by the electromagnetic induction filter 12 into direct current, and in addition to the one that performs half-wave rectification as shown, a full-wave rectifier may be used. Resistor 10 is a current limiting resistor for limiting the charging current supplied from rectifier 9 to secondary battery 5 .

なお、前記第3図に示したような整流器9から直接通信
制御回路3に電源を供給する回路は設けられていない。
Note that a circuit for directly supplying power from the rectifier 9 to the communication control circuit 3 as shown in FIG. 3 is not provided.

上記応答器1を取り付けた移動体の移動経路上には、口
の移動体の移動方向に沿って長尺な磁界発生器13が設
置されている。磁界発生器13は、永久磁石からなる多
数の磁石片13a、・・・を−列に並べたものであり、
この並び方向が移動体の移動方向に沿うように移動経路
上の側壁14に埋め込まれている。また、これらの磁石
片13a1・・・は、側壁14から露出する側において
N極とS極とが交互に並ぶように配置され、磁束の方何
が交互となる固定された磁界を発生する。そして、上記
応答器1は、移動体の移動に伴って電磁誘導コイル12
におけるコア12aの両端面がこの磁界発生器13に最
も接近するような位置に配置されている。しかも、この
コア12aの両端面は、方が磁界発生器13におけるい
ずれかの磁石片13aに最も接近すると、他方は常にこ
れとは逆の極性の磁石片13aに接近するような間隔距
離に形成されている。
An elongated magnetic field generator 13 is installed along the moving direction of the moving body on which the transponder 1 is attached, along the moving direction of the moving body. The magnetic field generator 13 has a large number of magnet pieces 13a, . . . made of permanent magnets arranged in a row.
They are embedded in the side wall 14 on the moving path so that the direction of this arrangement is along the moving direction of the moving body. Moreover, these magnet pieces 13a1... are arranged so that N poles and S poles are alternately lined up on the side exposed from the side wall 14, and generate a fixed magnetic field in which the direction of the magnetic flux is alternated. The transponder 1 then uses an electromagnetic induction coil 12 as the moving object moves.
Both end surfaces of the core 12a are located closest to the magnetic field generator 13. Furthermore, both end faces of the core 12a are formed at such a distance that when one approaches the magnet piece 13a of the magnetic field generator 13 closest to the other, the other end always approaches the magnet piece 13a of the opposite polarity. has been done.

上記構成の応答器1が移動体と共に移動して磁界発生器
13の近傍を通過すると、この磁界発生器13における
磁石片13a5 ・・・からの磁束が応答器1の電磁誘
導コイル12におけるコア12a内を貫くことになる。
When the transponder 1 having the above configuration moves together with the moving body and passes near the magnetic field generator 13, the magnetic flux from the magnet pieces 13a5 in the magnetic field generator 13 is transferred to the core 12a in the electromagnetic induction coil 12 of the transponder 1. It will penetrate inside.

ここで、ある瞬間にコア12aの一方の端面がN極の磁
石片13aに接近し、他方の端面がS極の磁石片13a
に接近したとすると、その後応答器lがこの磁石片13
aの幅の距離だけ移動した場合に、コア12aの各端面
が接近する磁石片13aの極性が逆になり、このコア1
2aを貫く磁束の方向も反転する。従って、応答器lが
磁界発生器13の近傍を移動する間、コア12aを貫く
磁束も変化を続けるので、電磁調厚コイル12に交流の
起電力が発生する。そして、この起電力によって生じた
誘導電流が整流器9によって直流に変換され、抵抗器1
oを介して二次電池5に充電されることになる。なお、
このようにして電磁調厚コイル12に誘起される電圧は
、応答器1の移動速度に比例するために必ずしも一定と
ならない。ただし、通信制御回路3は、電磁誘導フィル
12による充電中も二次電池5を介してのみ電源の供給
を受けるようになっているので、供給電圧が不安定にな
るようなおそれはな(、電圧安定化回路を別個設ける必
要もない。
Here, at a certain moment, one end face of the core 12a approaches the N-pole magnet piece 13a, and the other end face approaches the S-pole magnet piece 13a.
Suppose that the transponder l then approaches this magnet piece 13.
When the core 12a is moved by a distance of width a, the polarity of the magnet piece 13a that each end face of the core 12a approaches is reversed, and this core 1
The direction of the magnetic flux passing through 2a is also reversed. Therefore, while the transponder l moves near the magnetic field generator 13, the magnetic flux passing through the core 12a also continues to change, so that an alternating current electromotive force is generated in the electromagnetic thickness control coil 12. The induced current generated by this electromotive force is converted into direct current by the rectifier 9, and the resistor 1
The secondary battery 5 will be charged via o. In addition,
The voltage thus induced in the electromagnetic thickness control coil 12 is proportional to the moving speed of the responder 1, and therefore is not necessarily constant. However, since the communication control circuit 3 is configured to receive power only through the secondary battery 5 even while being charged by the electromagnetic induction filter 12, there is no fear that the supplied voltage will become unstable (voltage There is no need to provide a separate stabilizing circuit.

以上説明したように本実施例によれば、移動体が移動し
ている間に応答器1の二次電池5への充電を行うことが
できるので、この二次電池5に充電するためだけに移動
体がわざわざ指定された場所で長時間停止しなければな
らないというような不便がなくなる。また、磁界発生器
13は、永久磁石からなる磁石片13 a、  ・・・
によって構成されているので、設置が容易となり保守の
必要もなくなる。しかも、移動体の移動経路上に長い距
離にわたって簡単に設置することができるので、二次電
池5の充電が不十分になるということもない。
As explained above, according to this embodiment, it is possible to charge the secondary battery 5 of the transponder 1 while the mobile object is moving. This eliminates the inconvenience of having to stop a moving object for a long time at a designated location. Moreover, the magnetic field generator 13 includes magnet pieces 13 a, . . . made of permanent magnets.
Since it is constructed of , it is easy to install and requires no maintenance. Moreover, since it can be easily installed over a long distance on the moving route of a moving object, there is no possibility that the secondary battery 5 will become insufficiently charged.

さらに、磁界発生器13は、永久磁石による磁界を発生
するので、電磁輻射によって付近の機器等に障害を与え
るおそれも生じない。
Furthermore, since the magnetic field generator 13 generates a magnetic field by a permanent magnet, there is no risk of causing damage to nearby equipment etc. due to electromagnetic radiation.

(発明の効果) 以上の説明から明かなように、本発明の移動体識別装置
によれば、外部から随時充電される二次電池によって通
信制御回路に電源が供給されるので、−次電池を使用し
た場合のように電池切れによって応答器が使用できなく
なるというおそれがなくなる。また、移動体の移動中に
応答器の二次電池への充電が行われるので、充電のため
だけに移動体を所定の場所に一時停止させるというよう
な必要もなくなる。しかも、移動体の移動経路上に設け
られる磁界発生器は、固定磁界を発生するものなので、
設置や保守が容易となり、電磁輻射による障害のおそれ
もなくなる。
(Effects of the Invention) As is clear from the above description, according to the mobile object identification device of the present invention, power is supplied to the communication control circuit by the secondary battery that is charged from the outside at any time. There is no fear that the transponder will become unusable due to a dead battery, unlike when the transponder is used. Furthermore, since the secondary battery of the transponder is charged while the mobile body is moving, there is no need to temporarily stop the mobile body at a predetermined location just for charging. Moreover, since the magnetic field generator installed on the moving path of the moving object generates a fixed magnetic field,
Installation and maintenance become easier, and there is no fear of interference due to electromagnetic radiation.

4、   の  な;日 第1図は本発明の一実施例を示すものであってIDプレ
ートシステムにおける応答器の電気回路と磁界発生器の
構成を示す平面図、第2図及び第3図はそれぞれIDプ
レートシステムにおける従来例を示すものであって、第
2図は一次電池を使用した応答器の電気回路のブロック
図、第3図は二次電池を使用した応答器の充電回路の構
成を示す平面図である。
4. Figure 1 is a plan view showing one embodiment of the present invention, and Figures 2 and 3 are a plan view showing the configuration of the electric circuit of the transponder and the magnetic field generator in the ID plate system. Each shows a conventional example of an ID plate system. Fig. 2 is a block diagram of an electric circuit of a transponder using a primary battery, and Fig. 3 shows a configuration of a charging circuit of a transponder using a secondary battery. FIG.

l・・・応答器、3・・・通信制御回路、5・・・二次
電池、9・・・整流器、12・・・電磁誘導コイル、1
3・・・磁界発生器。
l... Responder, 3... Communication control circuit, 5... Secondary battery, 9... Rectifier, 12... Electromagnetic induction coil, 1
3...Magnetic field generator.

以  上that's all

Claims (1)

【特許請求の範囲】 1、移動体に取り付けられた応答器の通信制御回路が内
部の二次電池から電源の供給を受けて管理設備側に固定
された質問器との間で通信を行う移動体識別装置であっ
て、 移動体の移動経路上に固定磁界を発生する磁界発生器が
設置されると共に、該応答器内部に電磁誘導コイルと、
該電磁誘導コイルによって生じた誘導電流を直流に変換
して二次電池に供給する整流回路とを備えている移動体
識別装置。
[Scope of Claims] 1. A mobile device in which a communication control circuit of a transponder attached to a mobile object receives power from an internal secondary battery and communicates with an interrogator fixed to a management equipment side. The body identification device includes a magnetic field generator that generates a fixed magnetic field on the moving path of the moving body, and an electromagnetic induction coil inside the transponder.
A mobile object identification device comprising a rectifier circuit that converts an induced current generated by the electromagnetic induction coil into direct current and supplies the direct current to a secondary battery.
JP2248266A 1990-09-17 1990-09-17 Moving body identifying unit Pending JPH04127845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2248266A JPH04127845A (en) 1990-09-17 1990-09-17 Moving body identifying unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2248266A JPH04127845A (en) 1990-09-17 1990-09-17 Moving body identifying unit

Publications (1)

Publication Number Publication Date
JPH04127845A true JPH04127845A (en) 1992-04-28

Family

ID=17175578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2248266A Pending JPH04127845A (en) 1990-09-17 1990-09-17 Moving body identifying unit

Country Status (1)

Country Link
JP (1) JPH04127845A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5838138A (en) * 1994-05-02 1998-11-17 Henty; David L. Electronic device which is powered by actuation of manual inputs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5838138A (en) * 1994-05-02 1998-11-17 Henty; David L. Electronic device which is powered by actuation of manual inputs

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