JPH0312182U - - Google Patents
Info
- Publication number
- JPH0312182U JPH0312182U JP7166289U JP7166289U JPH0312182U JP H0312182 U JPH0312182 U JP H0312182U JP 7166289 U JP7166289 U JP 7166289U JP 7166289 U JP7166289 U JP 7166289U JP H0312182 U JPH0312182 U JP H0312182U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- output
- signal
- voltage
- phase
- 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
Links
- 239000013078 crystal Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Radar Systems Or Details Thereof (AREA)
Description
第１図はこの考案の一実施例を示すブロツク図
、第２図はこの考案の周波数信号出力回路と切り
換え装置の実施例を示すブロツク図、第３図は従
来の装置を示すブロツク図。
１…高周波発振器、２…サーキユレータ、３…
質問装置アンテナ、４…検波器、６…位相比較器
、７…ロツク検出器、８…ＬＰＦ、９…電圧制御
水晶発振器、１０…切り換えスイツチ、１１…発
振水晶片、１３…周波数シンセサイザ、１４…切
り換え装置、３０…応答装置アンテナ、３１…応
答装置変調器。なお、図中同一符号は同一または
相当部分を示す。
FIG. 1 is a block diagram showing an embodiment of this invention, FIG. 2 is a block diagram showing an embodiment of a frequency signal output circuit and switching device of this invention, and FIG. 3 is a block diagram showing a conventional device. 1...High frequency oscillator, 2...Circulator, 3...
Interrogator antenna, 4... Detector, 6... Phase comparator, 7... Lock detector, 8... LPF, 9... Voltage controlled crystal oscillator, 10... Changeover switch, 11... Oscillation crystal piece, 13... Frequency synthesizer, 14... switching device, 30... transponder antenna, 31... transponder modulator; Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
を応答装置側で所定の周波数の信号で変調して返
送し、この返送された電波を質問装置で復調して
変調信号を検出することにより上記応答装置を識
別する識別装置において、 質問装置側に備えられ、複数種類の周波数の内
から切り換え装置によつて選択された一つの周波
数の信号を出力する周波数信号出力回路、 この周波数信号出力回路の出力周波数の位相と
上記応答装置からの電波を復調して得た信号の位
相とを比較し、位相差によつて定められる電圧を
出力する位相比較器、 この位相比較器の出力電
圧を平滑した誤差信号により上記周波数信号出力
回路内の発振器の発振周波数をフイードバツク制
御する手段、 上記位相比較器に入力する周波数信号出力回路
の出力周波数が、上記応答装置からの電波を復調
して得た信号周波数にロツクされたことを検出す
るロツク検出器、 を備え、上記応答機側が応答機の属する群によ
りそれぞれ異なる変調周波数を有する場合、上記
切り換え装置による切り換えに対応して所定の群
に属する応答装置を識別するようにしたことを特
徴とする識別装置。 (2) 請求項第１項記載の識別装置において、上
記周波数信号出力回路は、 電圧制御水晶発振器と、 この電圧制御水晶発振器の出力周波数を基準周
波数として合成した周波数を出力して上記位相比
較器に入力する周波数シンセサイザと、 上記電圧制御水晶発振器の発振周波数を上記位
相比較器の出力によりフイードバツク制御する手
段とを備え、 上記切り換え装置は、 クロツクパルスを発生するクロツク発生器と、 このクロツクパルスを計数するカウンタと、 このカウンタの計数値をデコードするデコーダ
と、 このデコーダの出力により上記周波数シンセサ
イザの出力周波数を切り換える手段と、 上記ロツク検出器の出力時点における上記カウ
ンタの計数値をラツチするラツチと、 このラツチの内容を表示する手段とを備え、 上記周波数信号出力回路の出力周波数の自動切
り換えを行うことを特徴とする識別装置。[Claims for Utility Model Registration] (1) Radio frequency radio waves sent from the interrogation device are modulated with a signal of a predetermined frequency on the response device side and sent back, and the returned radio waves are demodulated by the interrogation device. In the identification device for identifying the responding device by detecting a modulated signal, the frequency signal output is provided on the interrogating device side and outputs a signal of one frequency selected by a switching device from among multiple types of frequencies. a phase comparator that compares the phase of the output frequency of the frequency signal output circuit with the phase of the signal obtained by demodulating the radio waves from the response device and outputs a voltage determined by the phase difference; means for feedback controlling the oscillation frequency of the oscillator in the frequency signal output circuit using an error signal obtained by smoothing the output voltage of the comparator; a lock detector for detecting that the transponder is locked to a signal frequency obtained by demodulating the transponder; An identification device characterized in that it identifies response devices belonging to a predetermined group. (2) In the identification device according to claim 1, the frequency signal output circuit includes a voltage-controlled crystal oscillator, and outputs a frequency synthesized by using the output frequency of the voltage-controlled crystal oscillator as a reference frequency to output a frequency to the phase comparator. and a means for feedback controlling the oscillation frequency of the voltage controlled crystal oscillator using the output of the phase comparator, the switching device comprising: a clock generator for generating clock pulses; and a means for counting the clock pulses. a counter; a decoder for decoding the counted value of the counter; a means for switching the output frequency of the frequency synthesizer based on the output of the decoder; a latch for latching the counted value of the counter at the time of output of the lock detector; and means for displaying the contents of the latch, and for automatically switching the output frequency of the frequency signal output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7166289U JPH0312182U (en) | 1989-06-21 | 1989-06-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7166289U JPH0312182U (en) | 1989-06-21 | 1989-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0312182U true JPH0312182U (en) | 1991-02-07 |
Family
ID=31608890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7166289U Pending JPH0312182U (en) | 1989-06-21 | 1989-06-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0312182U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11124322B2 (en) | 2016-05-27 | 2021-09-21 | Bobst Mex Sa | Head for grasping and folding insert sheets, inserting device, filling station and method for grasping, folding and loading an insert sheet |
-
1989
- 1989-06-21 JP JP7166289U patent/JPH0312182U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11124322B2 (en) | 2016-05-27 | 2021-09-21 | Bobst Mex Sa | Head for grasping and folding insert sheets, inserting device, filling station and method for grasping, folding and loading an insert sheet |
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