JPH0630457B2 - Mobile object identification device - Google Patents
Mobile object identification deviceInfo
- Publication number
- JPH0630457B2 JPH0630457B2 JP62138468A JP13846887A JPH0630457B2 JP H0630457 B2 JPH0630457 B2 JP H0630457B2 JP 62138468 A JP62138468 A JP 62138468A JP 13846887 A JP13846887 A JP 13846887A JP H0630457 B2 JPH0630457 B2 JP H0630457B2
- Authority
- JP
- Japan
- Prior art keywords
- interrogator
- demodulation
- modulation
- diode
- identification signal
- 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 - Fee Related
Links
Landscapes
- Radar Systems Or Details Thereof (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明は、送受信機の変復調方式に関するもので、特に
質問器となる送受信装置と、主として移動体に取り付け
られた応答器との間で、比較的近距離においてデータを
送受信する移動体識別装置の応答器の変復調部において
用いられるものである。TECHNICAL FIELD The present invention relates to a modulation / demodulation system of a transceiver, and particularly, between a transceiver as an interrogator and a transponder mainly attached to a moving body, It is used in a modulator / demodulator of a transponder of a mobile body identification device that transmits and receives data at a relatively short distance.
＜背 景＞ 近年、主として移動体に取り付けられた小型・軽量の簡
易な無線端末部である応答部と、送受信機能を有する質
問器との間でデータを送受信する簡易タイプの移動体識
別３置が脚光を浴びている。この装置の用途としては工
場内の製品の管理、あるいは人に応答器を所持させての
ゲート管理や、入退室管理等が考えられる。<Background> In recent years, a simple type mobile unit identification device that transmits and receives data between a response unit, which is a small and lightweight simple wireless terminal unit mainly attached to a mobile unit, and an interrogator having a transmission and reception function. Is in the limelight. Possible uses of this device are management of products in the factory, gate management by allowing a person to carry a responder, and entrance / exit management.
例えば工場内の生産管理に用いる場合では、生産ライン
上の部品コード番号、加工手順、搬送経路等の個別のデ
ータを予め記憶部にインプットしておいた応答器を各部
品に取り付けておき、生産ライン上の主要なポイント個
所に質問器を設置しておく。質問器は生産ライン上を流
れる各部品に設置された応答器に対して電波を放射し、
その内部データを読み取り、ラインの流れをコントロー
ルする制御信号を出力し、生産ラインの各部品に合わせ
てコントロールする。このような移動体識別装置を用い
れば、フレキシビリテイに富んだ生産ラインを形成する
ことがが可能となり、その応用範囲は幅広い分野にわた
る。For example, when it is used for production control in a factory, a transponder in which individual data such as a part code number on a production line, a processing procedure, and a transportation route is input to a storage unit in advance is attached to each part, and production is performed. Install interrogators at major points on the line. The interrogator emits radio waves to the transponder installed in each part flowing on the production line,
It reads the internal data, outputs control signals to control the flow of the line, and controls according to each part of the production line. By using such a moving body recognizing device, it becomes possible to form a production line rich in flexibility, and its application range covers a wide range of fields.
＜従来技術＞ 第５図に従来の移動体識別装置の一例を示す。１は質問
器、２は応答器であり、応答器２は送受信アンテナ２０
１，変調器２０２，復調器２０３，信号処理回路２０４
から構成される。質問器１からは無変調波又は変調波が
応答器２に向って放射される。応答器２では送受信アン
テナ２０１でこの電波を受信し、これが無変調波ならば
変調器２０２によって信号処理回路２０４内の記憶素子
に蓄えられた識別信号で変調されて、送受信アンテナ２
０１より再放射される。他方、変調波を受信した場合
は、復調器２０３によって信号が復調され、電源起動用
信号あるいは内部の記憶素子への書き込み用信号として
信号処理回路２０４へ送られる。<Prior Art> FIG. 5 shows an example of a conventional moving body identifying apparatus. 1 is an interrogator, 2 is a responder, and the responder 2 is a transmitting / receiving antenna 20.
1, modulator 202, demodulator 203, signal processing circuit 204
Composed of. An unmodulated wave or a modulated wave is emitted from the interrogator 1 toward the responder 2. In the transponder 2, the transmission / reception antenna 201 receives this radio wave, and if it is an unmodulated wave, it is modulated by the identification signal stored in the storage element in the signal processing circuit 204 by the modulator 202, and the transmission / reception antenna 2
It is re-radiated from 01. On the other hand, when the modulated wave is received, the signal is demodulated by the demodulator 203 and sent to the signal processing circuit 204 as a power supply activation signal or a signal for writing to an internal storage element.
ところが、このように変調器２０２と復調器２０３とを
両方備えた応答器であると寸法的に大きくなり、また変
調用と復調用のダイオードが必要となるため、コスト的
にも高くなるといった欠点が生じる。However, such a transponder including both the modulator 202 and the demodulator 203 is dimensionally large, and since the diodes for modulation and demodulation are required, the cost is also increased. Occurs.
＜目 的＞ 本発明は、応答器に関するこれらの問題点を改善し、小
型でしかも簡易な１つの回路で変復調兼用が可能となる
装置を提供することを目的とするものである。<Purpose> An object of the present invention is to provide a device that solves these problems associated with a transponder and that can be used for both modulation and demodulation with a single circuit that is small and simple.
＜実施例＞ 第１図に本発明の一実施例の構成図を示す。<Embodiment> FIG. 1 shows a block diagram of an embodiment of the present invention.
１は質問器、２は応答器であり、応答器２は送受信アン
テナ２０１，変復調兼用器２１０，信号処理回路２０４
から構成され、さらに変復調兼用器２１０はＲＦ入出力
回路２１１とダイオード２１２およびデータ入出力回路
２１３とから成っている。1 is an interrogator, 2 is a responder, and the responder 2 is a transmitting / receiving antenna 201, a modulator / demodulator / combiner 210, and a signal processing circuit 204.
Further, the modulator / demodulator / combiner 210 comprises an RF input / output circuit 211, a diode 212 and a data input / output circuit 213.
さて、質問器１から放射された電波は応答器２の送受信
アンテナ２０１で受信され、変復調兼用器２１０におい
て、質問器１からの電波が無変調波ならば、データ入出
力回路２１３からの信号処理回路２０４内の記憶素子に
蓄えられた識別信号のデータで変調されて、送受信アン
テナ２０１より質問器１へ再放射される。他方、変調波
ならば送信信号のデータが復調されて、電源起動用信号
あるいは記憶素子への書き込み用信号としてデータ入出
力回路２１３を通して信号処理回路２０４へ送られる。The radio wave radiated from the interrogator 1 is received by the transmission / reception antenna 201 of the transponder 2, and if the radio wave from the interrogator 1 is a non-modulated wave in the modulator / demodulator / combiner 210, signal processing from the data input / output circuit 213 is performed. The signal is modulated by the data of the identification signal stored in the storage element in the circuit 204 and re-radiated from the transmitting / receiving antenna 201 to the interrogator 1. On the other hand, if it is a modulated wave, the data of the transmission signal is demodulated and sent to the signal processing circuit 204 through the data input / output circuit 213 as a power supply activation signal or a signal for writing to the storage element.
次に、第２図に変復調兼用器の整合状態を表す図、第３
図に識別信号の一例を表す図を示す。変復調兼用器２１
０は、質問器から放射される電波が最大限にダイオード
２１２に供給されるように無変調波の周波数ｆ０に対し
て、ＲＦ入出力回路２１１によって第２図の実線のよう
に、入力整合がとられている。Next, FIG. 2 shows a matching state of the modulator / demodulator / combiner, and FIG.
The figure shows an example of an identification signal. Modulator / demodulator / combiner 21
0 is the input matching as shown by the solid line in FIG. 2 by the RF input / output circuit 211 with respect to the frequency f 0 of the unmodulated wave so that the radio wave radiated from the interrogator is supplied to the diode 212 to the maximum. Has been taken.
また例えば第３図に示すような識別信号がダイオード２
１２に印加された時は、電圧Ｖｄにおいて第２図の点線
のように入力整合がはずれるようになっている。すなわ
ち、復調器として働く時は搬送波ｆ０に対して整合がと
られているため、最大の復調出力が得られ、他方、変調
器として働く時は第２図に示すように識別信号の電圧が
０の時とＶｄの時とのリターン・ロスの差が質問器１へ
再放射される電波のレベル差となるため識別信号の周波
数によって、質問器からの無変調波に振幅変調がかか
り、質問器１へ送り返されるため、ＲＦ入出力回路２１
１とダイオード２１２およびデータ入出力回路２１３と
を用いるだけで、変復調兼用器が可能となる。Further, for example, the identification signal as shown in FIG.
When it is applied to 12, the input matching is lost at the voltage Vd as shown by the dotted line in FIG. That is, since the carrier wave f 0 is matched when it functions as a demodulator, the maximum demodulation output is obtained. On the other hand, when it functions as a modulator, the voltage of the identification signal is as shown in FIG. Since the difference in return loss between 0 and Vd is the level difference of the radio waves re-radiated to the interrogator 1, the non-modulated wave from the interrogator is amplitude-modulated by the frequency of the identification signal, and RF input / output circuit 21 as it is sent back to the instrument 1.
A modulator / demodulator / combiner can be realized only by using 1 and the diode 212 and the data input / output circuit 213.
第４図にマイクロ波帯の電波を利用した移動体識別装置
において、マイクロストリップラインを用いて構成した
変復調兼用器２１０の一構成例を示す。ここで３０１は
ＲＦ入出力回路、３０２は変復調兼用ダイオード、３０
３はデータ入出力回路である。識別信号のデータがダイ
オード３０２に印加されない時は３０１のＲＦ入出力回
路によりマイクロ波入力に対して整合がとれて最大の復
調出力が得られ、他方、識別信号のデータが印加された
時は、入力整合がはずれ、前述のように振幅変調がかか
るように動作する。FIG. 4 shows an example of the configuration of a modulator / demodulator / combiner 210 configured by using a microstrip line in a mobile body identification device using a radio wave in the microwave band. Here, 301 is an RF input / output circuit, 302 is a diode for both modulation and demodulation, and 30
3 is a data input / output circuit. When the identification signal data is not applied to the diode 302, the RF input / output circuit of 301 matches the microwave input to obtain the maximum demodulation output. On the other hand, when the identification signal data is applied, The input matching is lost and the operation is performed so that the amplitude modulation is applied as described above.
＜発明の効果＞ 以上説明した如く、本発明で示した変復調兼用器を応答
器に用いることにより、小型でしかもコスト的にも安い
移動体識別装置が構成できるためその効用は大きなもの
である。<Effects of the Invention> As described above, by using the modulator / demodulator / combiner shown in the present invention as a transponder, it is possible to construct a small-sized and low-cost mobile object identification device, which is very useful.
第１図は本発明の一実施例を示す構成図、第２図は変復
調兼用器の整合状態を表すグラフ図、第３図は識別信号
を表す波形図、第４図はマイクロストリップ線路を用い
た本発明の一構成例を示す回路図、第５図は従来の移動
体識別装置を示す構成図である。 図中、１……質問器、２……応答器、１０１，２０１…
…送受信アンテナ、２０２……変調器、２０３……復調
器、２０４……信号処理回路、２１０……変復調兼用
器、２１１，３０１……ＲＦ入出力回路、２１２，３０
２……変復調兼用ダイオード、２１３，３０３……デー
タ入出力回路。FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a graph showing a matching state of a modulator / demodulator / combiner, FIG. 3 is a waveform diagram showing an identification signal, and FIG. 4 is a microstrip line. FIG. 5 is a circuit diagram showing a configuration example of the present invention, and FIG. 5 is a configuration diagram showing a conventional moving body identifying apparatus. In the figure, 1 ... interrogator, 2 ... responder, 101, 201 ...
... transmission / reception antenna, 202 ... modulator, 203 ... demodulator, 204 ... signal processing circuit, 210 ... modulation / demodulation combined device, 211, 301 ... RF input / output circuit, 212, 30
2 ... Diode for both modulation and demodulation, 213, 303 ... Data input / output circuit.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 太田 智三 大阪府大阪市阿倍野区長池町22番22号 シ ャープ株式会社内 (56)参考文献 特開 昭59−27278（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Chizo Ota 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka Within Sharp Co., Ltd. (56)
Claims (1)
識別信号を入力しあるいは前記変復調兼用ダイオードか
らの復調信号を出力するデータ入力回路と、無変調波の
周波数に対して識別信号が前記変復調兼用ダイオードに
印加されない時には入力整合が取れ、印加された時には
識別信号の所定の電圧において入力整合からはずれるＲ
Ｆ入力回路とを有し、前記質問器から放射された無変調
波を受信した場合は内部記憶装置に蓄えられた識別信号
で前記無変調波を変調して質問器に再放射し、他方、変
調波を受信した場合は質問器からの送信データを復調す
る変復調兼用回路を有する応答器と を備えることを特徴とする移動体識別装置。1. An interrogator for radiating an unmodulated wave or a modulated wave, a diode for both modulation and demodulation, and a data input circuit for inputting an identification signal to the diode for both modulation and demodulation or for outputting a demodulated signal from the diode for both modulation and demodulation. Input matching is achieved when the identification signal is not applied to the modulation / demodulation / combined diode with respect to the frequency of the unmodulated wave, and when applied, the input matching is deviated at a predetermined voltage of the identification signal.
And a non-modulated wave radiated from the interrogator, the non-modulated wave is modulated by an identification signal stored in an internal storage device and re-radiated to the interrogator, And a transponder having a circuit for both modulation and demodulation that demodulates transmission data from the interrogator when a modulated wave is received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62138468A JPH0630457B2 (en) | 1987-06-02 | 1987-06-02 | Mobile object identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62138468A JPH0630457B2 (en) | 1987-06-02 | 1987-06-02 | Mobile object identification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63302629A JPS63302629A (en) | 1988-12-09 |
| JPH0630457B2 true JPH0630457B2 (en) | 1994-04-20 |
Family
ID=15222750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62138468A Expired - Fee Related JPH0630457B2 (en) | 1987-06-02 | 1987-06-02 | Mobile object identification device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0630457B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2810583B2 (en) * | 1992-03-02 | 1998-10-15 | シャープ株式会社 | Local area network system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927278A (en) * | 1982-08-06 | 1984-02-13 | Mitsubishi Electric Corp | Information transmitter |
| JPS61144136A (en) * | 1984-12-17 | 1986-07-01 | Matsushita Electric Ind Co Ltd | data sending device |
-
1987
- 1987-06-02 JP JP62138468A patent/JPH0630457B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63302629A (en) | 1988-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |