JPS6310293A - Noncontact reading device for identification information - Google Patents

Noncontact reading device for identification information

Info

Publication number
JPS6310293A
JPS6310293A JP61156512A JP15651286A JPS6310293A JP S6310293 A JPS6310293 A JP S6310293A JP 61156512 A JP61156512 A JP 61156512A JP 15651286 A JP15651286 A JP 15651286A JP S6310293 A JPS6310293 A JP S6310293A
Authority
JP
Japan
Prior art keywords
identification
frequency
reading device
energy
coupler
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
JP61156512A
Other languages
Japanese (ja)
Inventor
Kenji Horikiri
賢治 堀切
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP61156512A priority Critical patent/JPS6310293A/en
Publication of JPS6310293A publication Critical patent/JPS6310293A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a compact and inexpensive noncontact reading device for identification information by supplying the vibrating energy to an identification code matter from an identification reader and sweeping the frequency of the vibrating energy to detect the natural frequency of said code matter. CONSTITUTION:The output of a sweep frequency generator 13 of an identification reader 12 is applied to a coupler 15 and a field is produced by the coupler 15 to be connected to a coupler 10 of an identification code matter 9. The frequency of the generator 13 is swept within a prescribed range and the resonators 11a-11n of the matter 9 absorbs the connected 10 energy in response to the swept frequency. A level detector 14 detects the potential of the coupler 15 lowered by said absorption of energy and this detection output is applied to an identifier 16. In such a way, a compact and inexpensive noncontact reading device for identification information is obtained with no maintenance needed.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、数センチメートルから数メートル離れた物
体に予め与えられている識別情報を非接触で読み取る非
接触識別情報読取装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a non-contact identification information reading device that reads identification information given in advance to an object several centimeters to several meters away without contact.

〔従来の技術〕[Conventional technology]

第4図はたとえば特開昭57−152098号公報に示
された従来の非接触識別情報読取装置の全体の構成を示
す概念図である。この第4図の1は移動体などの自動車
であり、この自動車1に識別信号発信装置2が装着され
ている。
FIG. 4 is a conceptual diagram showing the overall configuration of a conventional non-contact identification information reading device disclosed in, for example, Japanese Patent Laid-Open No. 57-152098. Reference numeral 1 in FIG. 4 is an automobile such as a mobile object, and an identification signal transmitting device 2 is mounted on this automobile 1. As shown in FIG.

一方、3は投光器、4は受信アンテナであり、この受信
アンテナ4からの受信信号より識別情報を識別情報読衣
装!!i5で弁別するようにしている。
On the other hand, 3 is a floodlight, 4 is a receiving antenna, and the identification information is read from the received signal from this receiving antenna 4! ! i5 is used for discrimination.

第5図は上記識別信号発信装置2のブロック図で、光電
池6、電子回路7、アンテナ8から9成されている。電
子回路7はUHF発振器7a、変調器7b、メモリ7c
、送信器7dとにより構成されている。
FIG. 5 is a block diagram of the identification signal transmitting device 2, which is composed of nine components including a photovoltaic cell 6, an electronic circuit 7, and an antenna 8. The electronic circuit 7 includes a UHF oscillator 7a, a modulator 7b, and a memory 7c.
, and a transmitter 7d.

次に動作について説明する。移動体1があるダートを通
過すると、投光器3の照射光If受けて識別信号発信装
置2の光電池6が起電力を発生し、電子回路7のメモリ
7cからコード番号全発生し、このコード番号をUHF
発振器7aの高周波を変調器7bで変調し、アンテナ8
かも送信する。
Next, the operation will be explained. When the moving body 1 passes a certain dirt, the photocell 6 of the identification signal transmitting device 2 generates an electromotive force in response to the irradiation light If from the projector 3, and the entire code number is generated from the memory 7c of the electronic circuit 7. UHF
The high frequency of the oscillator 7a is modulated by the modulator 7b, and the antenna 8
Maybe send it.

一方、受信アンテナ4は上述のUHF帯を受信し、識別
情報読取装置2で弁別し、コード番号を非接触で識別す
ることが可能である。
On the other hand, the receiving antenna 4 receives the above-mentioned UHF band, and the identification information reading device 2 discriminates the received signal so that the code number can be identified without contact.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記光電池6の代りに、バッテリを内蔵すると、投光器
3は不要となるが、常時信号を発生するため、バッテリ
の寿命が短・くなるため、頻繁に電池の交換が必要とな
る。
If a battery is built in instead of the photovoltaic cell 6, the projector 3 becomes unnecessary, but since a signal is constantly generated, the battery life is shortened and the battery needs to be replaced frequently.

さらに、近接した他の移動体1がある場合は、混信のた
め識別ができない場合が生じる欠点がある。
Furthermore, if there is another moving object 1 nearby, there is a drawback that identification may not be possible due to interference.

この発明は、かかる問題点を解決するためになされたも
ので、上述の投光器や光電池、電子回路、アンテナをな
くすることができ、小型かつ低コスト化が可能で、しか
もメンテナンスが不要となる非接触識別情報読取装置を
得ることを目的とする。
This invention was made to solve these problems, and it is possible to eliminate the above-mentioned floodlights, photovoltaic cells, electronic circuits, and antennas, making it possible to reduce the size and cost, and moreover, it is a non-maintenance device that does not require maintenance. The purpose is to obtain a contact identification information reading device.

〔問題点を解決するための手段〕 この発明に係る非接触識別情報読取装置は、外部からエ
ネルギを非接触状態で受けて固有の共振をもつ共振子で
吸収する識別コード体と、この識別コード体に振動エネ
ルギのフィールドを形成して供給し、その振動エネルギ
の周波数を所定範囲内で掃引して共振子で吸収するエネ
ルギより識別コード体の情報を読み取る識別読取装置と
を設けたものである。
[Means for solving the problem] A non-contact identification information reading device according to the present invention includes an identification code body that receives energy from the outside in a non-contact state and absorbs it with a resonator having a unique resonance, and this identification code. It is equipped with an identification reading device that forms and supplies a field of vibrational energy to the body, sweeps the frequency of the vibrational energy within a predetermined range, and reads information on the identification code body from the energy absorbed by the resonator. .

〔作 用〕[For production]

この発明においては、識別フード体に識別読取装置から
振動エネルギを供給してその振動エネルギの周波数を所
定の範囲内で掃引し、識別コード体内の共振子が振動エ
ネルギを吸収すると、その振動エネルギの変化を識別読
取装置で非接触状態で検出することにより識別構造体の
情報を識別する。
In this invention, vibration energy is supplied from the identification reader to the identification hood body, the frequency of the vibration energy is swept within a predetermined range, and when the resonator inside the identification code body absorbs the vibration energy, the vibration energy is The information on the identification structure is identified by detecting the change in a non-contact manner with an identification reader.

〔実施例〕〔Example〕

以下、この発明の非接触識別情報読取装置の実施例を図
について説明する。第1図はその一実施例の構成を示す
ブロック図である。この第1図において、9は識別コー
ド体で、結合器1oと複数個の固有共振周波数をもつ共
振子11a、llb・・・・・・llnから構成されて
いる。
Hereinafter, embodiments of the non-contact identification information reading device of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of one embodiment. In FIG. 1, reference numeral 9 denotes an identification code body, which is composed of a coupler 1o and resonators 11a, llb, . . ., lln each having a plurality of natural resonance frequencies.

一方、12は識別読取装置であり、掃引周波数発生装置
13、掃引周波数のレベル検出器14、外部に掃引周波
数発生の振動エネルギのフィールドを作る結合器15、
識別器16(!:により構成されている。
On the other hand, 12 is an identification reading device, a sweep frequency generator 13, a sweep frequency level detector 14, a coupler 15 that creates an external field of vibration energy generated by the sweep frequency,
It is composed of a discriminator 16 (!:).

掃引周波数発生装置13の出力は結合器15に加えるよ
うになっており、結合器15でフィールドを作ってその
エネルギが共振子11a〜llnで吸収されるようにな
っている。共振子11a〜11nのエネルギの吸収に応
じて結合器15の電位低下をレベル検出器14で検出し
、その検出出力を識別器16に加えるようになっている
The output of the sweep frequency generator 13 is applied to a coupler 15, which creates a field whose energy is absorbed by the resonators 11a to lln. A level detector 14 detects a potential drop in the coupler 15 in accordance with absorption of energy by the resonators 11a to 11n, and the detection output is applied to a discriminator 16.

第2図(a)は識別コード体9の共振子11a〜11n
の電気回路図のシンゲル図であり、符号11が付されて
いる。第2図(b)はその電気等価回路図である。この
第2図(b)に示すように、直列に接続されたインダク
タ、容量、抵抗のそれぞれにインダクタンスL。、キャ
パシタンスC0、抵抗値Roト寄生容量のキャパシタン
スCpが並列に接続されて表わされる。この両端の共振
周波数は ωS 呻=f口1死 °”°°゛°“°−°−+21となる(
ωSは直列共振周波数、ωPは並列共振周波数)。
FIG. 2(a) shows the resonators 11a to 11n of the identification code body 9.
It is a Singel diagram of the electrical circuit diagram of , and is designated by the reference numeral 11. FIG. 2(b) is its electrical equivalent circuit diagram. As shown in FIG. 2(b), each inductor, capacitor, and resistor connected in series has an inductance L. , capacitance C0, resistance value Ro, and capacitance Cp of parasitic capacitance are shown connected in parallel. The resonance frequency at both ends is ωS groan = f mouth 1 dead °"°°゛°"°−°−+21 (
ωS is the series resonant frequency, ωP is the parallel resonant frequency).

ωS≦ωPで、通常この間で発振周波数として使われる
が、この発明では、このωSとωPとの間で共振する周
波数を検出するのに使われる。共振子11axllnは
通常、水晶振動子、セラミック振動子、強誘電体共振子
を利用でき、その自己共振周波数と同じ周波数のエネル
ギを吸収する性質を有するので、この発明では、外部か
ら掃引周波数発生装置13のエネルギを結合器15に加
えて、この結合器15で74−ルドを作り、このフィー
ルド内で識別コード体9の結合器10を経由して共振子
11a、llb・・・・・・llnがエネルギを吸収す
ると、レベル検出器14は結合器15の電位が小さがる
のを検出することができる。
ωS≦ωP, and normally this is used as the oscillation frequency, but in this invention, it is used to detect the frequency that resonates between ωS and ωP. The resonator 11axlln can normally use a crystal resonator, a ceramic resonator, or a ferroelectric resonator, and has the property of absorbing energy at the same frequency as its self-resonant frequency. 13 is applied to the coupler 15, and the coupler 15 creates a 74-field, and within this field, the energy is applied to the resonators 11a, llb...lln via the coupler 10 of the identification code body 9. absorbs energy, the level detector 14 can detect that the potential of the coupler 15 decreases.

いま、掃引周波数発生器13が周波数FsからFfまで
周波数が掃引されると、識別コード体9の共振子lla
〜11nの共振周波数f1. f−、f1&  と一致
したところで検出レベルは第3図に示すように一部エネ
ルギが吸収されて、レベルが下がる。
Now, when the sweep frequency generator 13 sweeps the frequency from frequency Fs to Ff, the resonator lla of the identification code body 9
~11n resonant frequency f1. When f-, f1& coincide with each other, a portion of the energy is absorbed and the detection level decreases as shown in FIG.

このレベルの下がる谷間の周波数を検出することで、識
別フード体9の共振周波数fl y・・・fr!1+・
・・f、が求められる。
By detecting the frequency in the valley where the level decreases, the resonance frequency fl y...fr! of the identification hood body 9 is detected. 1+・
...f is found.

識別読取装置12の掃引周波数F3からFfまでをある
一定範囲の周波数Δfで区分けして、すなわちN=(F
f−fs)/Δf で整数化し、かつ周波数区分Δfが
共振子11のQの半値幅より十分大きくとれば、第3図
に示すように検知レベルを各周波数区分Δf区間の中心
値が論理値のrOJ、「1」(またはロー、へイ)にで
きる。
The sweep frequency F3 to Ff of the identification reader 12 is divided into a certain range of frequencies Δf, that is, N=(F
f-fs)/Δf, and if the frequency division Δf is sufficiently larger than the half-width of Q of the resonator 11, the detection level can be set to the center value of each frequency division Δf interval as a logical value, as shown in Fig. 3. rOJ can be set to "1" (or low, hey).

掃引周波数F3からFfの間では、N個(1,1゜・・
・1jO,1,・・・1,0,0.1・・・1〕フード
が作られる。この組合せは(2N−1)個有る。
Between the sweep frequencies F3 and Ff, N (1, 1°...
・1jO,1,...1,0,0.1...1] Food is made. There are (2N-1) such combinations.

市販のセラミック振動子でMHz帯のもので=10” 
zc KHzとなる。周波数区分Δf=10Xδf” 
10 KHzとすれば、N = 10’/10XI O
”=100トナリ、組合セ数ti2”−1= 1.2X
10” カWられる。1000個を識別するにはN=1
0.百万個を識別するにはN=20ですむ。
A commercially available ceramic resonator in the MHz band = 10”
zc KHz. Frequency division Δf=10Xδf”
If 10 KHz, then N = 10'/10XI O
”=100 tonari, number of union cells ti2”-1= 1.2X
10". To identify 1000 pieces, N=1
0. To identify one million pieces, N=20 is sufficient.

共振子11はN個まで使えるが、コストを下げおよびサ
イズを小さくするには、共振子11の数をN/M (N
 > M )として掃引周波数範囲t−M倍にすること
は等価となる。
Up to N resonators 11 can be used, but to reduce cost and size, the number of resonators 11 can be reduced to N/M (N
>M), it is equivalent to increase the sweep frequency range by t-M times.

結合器10.15は第1図では、コイルの記号を使って
いるが、アンテナ、漏洩ケーブル、トランスゾューサな
ど直接触することなくエネルギを放出し、かつ吸収でき
る可逆性の結合体であれば特に制限するものではない。
Coupler 10.15 uses the symbol of a coil in Figure 1, but it is particularly limited if it is a reversible coupling that can emit and absorb energy without direct contact, such as an antenna, leaky cable, or transducer. It's not something you do.

〔発明の効果〕〔Effect of the invention〕

この発明は以上説明したとおり、識別コード体を能動素
子で構成し、この識別体に対して結合器に掃引周波数発
生装置のエネルギを供給してフィールドを作り、識別コ
ード体内の共振子で吸収されたエネルギにより変化する
結合器の電位を検出するようにしたので、外部から大き
なエネルギを識別コード体に供給することなく、それを
エネルギの場に置くだけで、しかもそのワイルドの変化
のみを検出するだけですみ、かつ非接触で識別フード体
のフードを読み取ることができる。
As explained above, this invention consists of an identification code body made of active elements, and a field is created by supplying the energy of a sweep frequency generator to a coupler for this identification code body, which is absorbed by a resonator inside the identification code body. Since it detects the potential of the coupler that changes depending on the energy applied to the identification code, it is possible to simply place it in an energy field without supplying large amounts of energy to the identification code body from the outside, and detect only the wild changes. It is possible to read the identification hood of the body without contact.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明の非接触識別情報読取装置の一実施例
の構成を示すブロック図、第2図(a)は同上非接触識
別情報読取装置における共振子のシンボルを示す図、第
2図(b)は同上共振子の電気的等価回路図、第3図は
同上非接触識別情報読取装置を説明するための識別コー
ド化変換図、第4図は従来の非接触識別読取装置の構成
図、第5図は第4図の非接触識別読取装置における識別
信号発生装置の構成を示すブロック図である。 9・・・識別コード体、10.15・・・結合器、11
゜11a〜lln・・・共振子、12・・・識別読取装
置、13・・・掃引周波数発生装置、14・・・レベル
検出器、16・・・識別器。 なお、図中同一符号は同一または相当部分を示す。 第1図 第2図 (0)                   (b)
第3図 第4図 ! 第5図
FIG. 1 is a block diagram showing the configuration of an embodiment of a non-contact identification information reading device of the present invention, FIG. 2(a) is a diagram showing symbols of resonators in the non-contact identification information reading device, (b) is an electrical equivalent circuit diagram of the resonator as above, FIG. 3 is an identification code conversion diagram for explaining the non-contact identification information reading device as above, and FIG. 4 is a configuration diagram of a conventional non-contact identification reading device. , FIG. 5 is a block diagram showing the configuration of the identification signal generating device in the non-contact identification reading device of FIG. 4. 9...Identification code body, 10.15...Coupler, 11
゜11a-lln... Resonator, 12... Identification reader, 13... Sweep frequency generator, 14... Level detector, 16... Discriminator. Note that the same reference numerals in the figures indicate the same or corresponding parts. Figure 1 Figure 2 (0) (b)
Figure 3 Figure 4! Figure 5

Claims (1)

【特許請求の範囲】[Claims] 外部からのエネルギを非接触手段で受け取る結合器と音
波、電磁波、電磁誘導、光波等の振動に固有の共振をも
つ一つあるいは複数個の共振素子とからなる識別コード
体と、この識別コード体に振動エネルギのフィールドを
形成して供給し、この振動エネルギの周波数をあらかじ
め定められた範囲で掃引して上記識別コード体の固有共
振周波数を検出することにより上記識別コード体の情報
を識別する識別読取装置とを備えてなることを特徴とす
る非接触識別情報読取装置。
An identification code body consisting of a coupler that receives external energy by non-contact means and one or more resonant elements having resonance specific to vibrations of sound waves, electromagnetic waves, electromagnetic induction, light waves, etc.; and this identification code body. An identification device that identifies information on the identification code body by forming and supplying a field of vibration energy to the body, and detecting the natural resonant frequency of the identification code body by sweeping the frequency of this vibration energy in a predetermined range. A non-contact identification information reading device, comprising: a reading device.
JP61156512A 1986-07-01 1986-07-01 Noncontact reading device for identification information Pending JPS6310293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61156512A JPS6310293A (en) 1986-07-01 1986-07-01 Noncontact reading device for identification information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61156512A JPS6310293A (en) 1986-07-01 1986-07-01 Noncontact reading device for identification information

Publications (1)

Publication Number Publication Date
JPS6310293A true JPS6310293A (en) 1988-01-16

Family

ID=15629392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61156512A Pending JPS6310293A (en) 1986-07-01 1986-07-01 Noncontact reading device for identification information

Country Status (1)

Country Link
JP (1) JPS6310293A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5447762A (en) * 1987-12-16 1995-09-05 Melea Limited Method and system for localized fluid-assisted injection molding and body formed thereby
EP1564006A2 (en) 2004-02-16 2005-08-17 Seiko Epson Corporation Line head and image formation apparatus employing the same
JP2011508300A (en) * 2007-12-19 2011-03-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Apparatus and method for identifying an object

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5447762A (en) * 1987-12-16 1995-09-05 Melea Limited Method and system for localized fluid-assisted injection molding and body formed thereby
EP1564006A2 (en) 2004-02-16 2005-08-17 Seiko Epson Corporation Line head and image formation apparatus employing the same
JP2011508300A (en) * 2007-12-19 2011-03-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Apparatus and method for identifying an object
US9818053B2 (en) 2007-12-19 2017-11-14 Koninklijke Philips N.V. Identification of objects using frequency characteristics of RFID tags

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