JPS61149880A - Frequency sensor - Google Patents
Frequency sensorInfo
- Publication number
- JPS61149880A JPS61149880A JP27212684A JP27212684A JPS61149880A JP S61149880 A JPS61149880 A JP S61149880A JP 27212684 A JP27212684 A JP 27212684A JP 27212684 A JP27212684 A JP 27212684A JP S61149880 A JPS61149880 A JP S61149880A
- Authority
- JP
- Japan
- Prior art keywords
- antenna pattern
- frequency
- sensor
- receiving antenna
- transmitting antenna
- 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
Landscapes
- Burglar Alarm Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はデパート、スーパーマーケット等の店舗に配列
されている商品に貼着される周波数センサーに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a frequency sensor that is attached to products arranged in stores such as department stores and supermarkets.
近年デパート、スーパーマーケット等において商品の盗
難を防止するためには種々の対策が施されている。特に
商品中小型のものは比較的盗■されやすい。このための
対策に関して従来はほとんど皆無であった。In recent years, various measures have been taken in department stores, supermarkets, etc. to prevent product theft. In particular, small and medium-sized items are relatively easy to steal. Conventionally, there have been almost no countermeasures for this.
本発明はＥ記の峯情に鑑みてなされたもので、形状の小
型を図るとともに第三者にはほとんど認識できないでか
つ確実に盗唾を防止することができる周波数センサーを
提供することを目的とする。The present invention was made in view of the situation described in E, and aims to provide a frequency sensor that is compact in size, almost unrecognizable to third parties, and that can reliably prevent saliva theft. shall be.
以下図面を参照して本発明の一実施例を説明すゐ、第１
図において、１は図示しないプリント板に形成された受
信アンテナパターン部で、この受信アンテナパターン部
１は略コ字形状に形成される。前記受信アンテナパター
ン部１内には送信アンテナパターン部２が配設される。An embodiment of the present invention will be described below with reference to the drawings.
In the figure, reference numeral 1 denotes a receiving antenna pattern section formed on a printed board (not shown), and this receiving antenna pattern section 1 is formed in a substantially U-shape. A transmitting antenna pattern section 2 is disposed within the receiving antenna pattern section 1 .
送信アンテナパターン部２は略四角形状に形成され、前
記受信アンテナパターン部１の長辺部３ａと対向する辺
の各角部４ａ、４ｂからは接続導体パターン５ａ。The transmitting antenna pattern section 2 is formed into a substantially rectangular shape, and a connecting conductor pattern 5a extends from each corner 4a, 4b of the side opposite to the long side 3a of the receiving antenna pattern section 1.
５ｂが引き出されて前記長辺部３ｍにそれぞれ各別に接
続される。６はバラクタダイオードからなる逓倍ダイオ
ードで、このダイオード６のアノードは受信アンテナパ
ターン部１の長辺部３ｂと短辺部３ｃとの折曲部７に接
続される。また、ダイオード６のカンードは送信アンテ
ナパターン部２の角部４Ｃに接続される。5b are pulled out and connected to the long side portions 3m, respectively. Reference numeral 6 denotes a multiplier diode consisting of a varactor diode, and the anode of this diode 6 is connected to a bent portion 7 between the long side 3b and the short side 3c of the receiving antenna pattern section 1. Further, the cand of the diode 6 is connected to the corner portion 4C of the transmitting antenna pattern portion 2.
第１図に示したセンサーの電気的な等価回路は第２図に
示すようになつている。第２図において、コンデンサＣ
１とコイルＬ１は第１図における受信アンテナパターン
部１の形状によって定まる分布定数であり、コンデンサ
Ｃ３とコイルＬ、により受信同調周波数が決定される。The electrical equivalent circuit of the sensor shown in FIG. 1 is as shown in FIG. In Figure 2, capacitor C
1 and the coil L1 are distributed constants determined by the shape of the receiving antenna pattern section 1 in FIG. 1, and the receiving tuning frequency is determined by the capacitor C3 and the coil L.
また、コンデンサＣ８、とコイルＬ、は同じく送信アン
テナパターン部２の形状によって定まる分布定数であり
、コンデンサＣ！とコイルＬ、により送信同調周波数が
決定される。Also, the capacitor C8 and the coil L are distributed constants determined by the shape of the transmitting antenna pattern section 2, and the capacitor C! and coil L, the transmission tuning frequency is determined.
上記のように構成されたセンサーは商品に直接貼着され
るか、あるいはプライス札に貼着される。The sensor configured as described above is attached directly to a product or to a price tag.
デパート、スーパーマーケット等の店舗の出入口付近に
は従来公知の適宜送信機１０および受信機１３を設置し
ておく。第３図に示すような送信機１０からは高周波電
力を送信アンテナ１１を介して連続的に放射させる。放
射された電波はセンサー１４の受信アンテナパターン部
１の周波数と同一に選択されているので、パターン部１
には所定の高周波電圧が誘起される。この電圧は逓倍ダ
イオード６に供給されると出力に整数倍高い周波数の電
力を得る。この電力は送信アンテナパターン部２に供給
され、このパターン部２から再び電波が放射される。こ
のときの送信周波数は受信アンテナパターン部１におけ
る受信周波数の整数倍高い周波数となっている。センサ
ー１４から放射された電波は受信アンテナ１２で受信さ
れて受信機１３に供給される。受信機１３ではセンサー
１４からの電波を受信しているときには例えば警報音が
連続して送出されたり警報ランプが点滅するようになっ
ている。このようにしておけば、商品が盗難に合うと受
信機１３からは警報音がでるので、商品の盗電が即座に
判断できる。Conventionally known transmitters 10 and receivers 13 are installed near the entrances and exits of stores such as department stores and supermarkets. A transmitter 10 as shown in FIG. 3 continuously radiates high frequency power via a transmitting antenna 11. Since the radiated radio waves are selected to have the same frequency as the receiving antenna pattern section 1 of the sensor 14, the pattern section 1
A predetermined high frequency voltage is induced. When this voltage is supplied to the multiplier diode 6, it obtains power at an integral multiple of a higher frequency as an output. This power is supplied to the transmitting antenna pattern section 2, and radio waves are radiated from this pattern section 2 again. The transmission frequency at this time is a frequency higher than the reception frequency in the reception antenna pattern section 1 by an integral number of times. Radio waves radiated from the sensor 14 are received by the receiving antenna 12 and supplied to the receiver 13. When the receiver 13 is receiving radio waves from the sensor 14, for example, an alarm sound is continuously transmitted or an alarm lamp flashes. In this way, if the product is stolen, the receiver 13 will emit an alarm, so that it can be immediately determined whether the product has been stolen.
なお、Ｌ記センサーの受信アンテナパターン部ｌの長辺
３ａ、３ｂの長さを４０−１短辺３Ｃの長さを２２ｍに
設定したときの受信周波数は１，１５０ＭＨｚとなる。Note that when the lengths of the long sides 3a and 3b of the receiving antenna pattern portion l of the L sensor are set to 40-1 and the length of the short side 3C is set to 22 m, the receiving frequency is 1,150 MHz.
ｔた送信アンテナパターン部２の長辺を２２■、短辺を
１０−に設定するとその送信周波数は２，３００ＭＨｚ
となる、すなわち、センサーに使用されている逓倍ダ
イオード６は２逓倍したことになる。If the long side of the transmitting antenna pattern section 2 is set to 22■ and the short side is set to 10-, the transmitting frequency will be 2,300MHz.
In other words, the multiplier diode 6 used in the sensor has doubled.
以と述べたように本発明によれば、所定周波数に同調さ
れた受信アンテナパターン部内に受信周波数の整数倍高
い送信周波数となる送信アンテナパターン部を設け、両
パターン間に逓倍ダイオードを設けてセンサーを構成し
たので、小型でかつ簡単な回路構成の周波数センサーが
得られ、しかもセンサーは無電源で動作するのでどのよ
うな場所にでも配設することができるために、例えば商
品等に貼布しておけば、正規に購入しないで外部に持ち
出そうとすれば受信機の作動により盗難を発見でき、盗
難な防止することができる。As described above, according to the present invention, a transmitting antenna pattern section having a transmitting frequency that is an integer multiple of the receiving frequency is provided within a receiving antenna pattern section tuned to a predetermined frequency, and a multiplier diode is provided between both patterns. As a result, a frequency sensor with a small and simple circuit configuration can be obtained.Moreover, the sensor operates without a power supply, so it can be placed anywhere, so it can be attached to products, etc. If you keep it in place, if you try to take it outside without purchasing it legally, the receiver will activate and detect the theft, thereby preventing theft.
尚、本発明は商品に貼布して盗難を防止するだけでなく
工場、研究所等において外来者であることを示す名札に
本発明センサーを貼着しておき、外来者の入室を禁止す
る地域に送信機、受信機等を設置しておけば外来者が禁
止地域に近づいたことが即座に判明し、秘密漏出を未然
釜こ防止することができる。In addition, the present invention not only prevents theft by pasting it on products, but also prevents foreigners from entering the room by pasting the sensor on name tags that indicate foreigners in factories, research institutes, etc. If transmitters, receivers, etc. are installed in the area, it will be immediately known when a foreigner approaches a prohibited area, and the leakage of secrets can be prevented.
第１図はこの発明の一実施例を説明する概略的な構成説
明図、第２図は第１図の電気的な等価回路図、第３図は
この発明によるセンサーの使用方法を述べる説明図であ
る。
１・・・受信アンテナパターン部、２・・・送信アンテ
ナパターン部、３ｇ、３ｂ・・・長辺、３Ｃ・・・短辺
、４ａ、４ｂ・・・角部、５ａ、５ｂ・・・導体パター
ン、６・・・逓倍ダイオード、７・・・折曲部。
共同出願人 阿 部 喜 −
石 坂 良 蔵FIG. 1 is a schematic configuration explanatory diagram illustrating an embodiment of the present invention, FIG. 2 is an electrical equivalent circuit diagram of FIG. 1, and FIG. 3 is an explanatory diagram illustrating how to use the sensor according to the present invention. It is. DESCRIPTION OF SYMBOLS 1... Receiving antenna pattern part, 2... Transmitting antenna pattern part, 3g, 3b... Long side, 3C... Short side, 4a, 4b... Corner part, 5a, 5b... Conductor Pattern, 6... Multiplier diode, 7... Bent portion. Co-applicant Yoshi Abe − Ryozo Ishizaka
Claims (1)
の受信アンテナパターン部内に受信アンテナの同調周波
数より整数倍高い周波数に同調された四角形状の送信ア
ンテナパターン部を配設し、この送信アンテナパターン
部と前記受信アンテナパターン部の長辺部と対向する送
信アンテナパターン部の所定の角度から引き出された導
体パターンを前記受信アンテナパターン部の長辺部に接
続し、かつ前記受信アンテナパターン部の所定個所に逓
倍ダイオードのアノードを接続するとともにそのダイオ
ードのカソードを送信アンテナパターン部の所定個所に
接続したことを特徴とする周波数センサー。(1) A receiving antenna pattern section is formed into a U-shape, and a rectangular transmitting antenna pattern section tuned to a frequency that is an integer multiple higher than the tuning frequency of the receiving antenna is disposed within the receiving antenna pattern section. A conductor pattern pulled out from a predetermined angle of a transmitting antenna pattern portion facing the long side portion of the receiving antenna pattern portion is connected to the long side portion of the receiving antenna pattern portion, and A frequency sensor characterized in that an anode of a multiplier diode is connected to a predetermined location, and a cathode of the diode is connected to a predetermined location of a transmitting antenna pattern section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27212684A JPS61149880A (en) | 1984-12-25 | 1984-12-25 | Frequency sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27212684A JPS61149880A (en) | 1984-12-25 | 1984-12-25 | Frequency sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61149880A true JPS61149880A (en) | 1986-07-08 |
Family
ID=17509450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27212684A Pending JPS61149880A (en) | 1984-12-25 | 1984-12-25 | Frequency sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61149880A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63144281A (en) * | 1986-12-08 | 1988-06-16 | Toshiba Eng Co Ltd | Frequency sensor |
| JPS63171385A (en) * | 1986-10-22 | 1988-07-15 | ウーテーアー・エヌ・アー・フアブリック・デボーシュ | Passive transponder |
| US5241923A (en) * | 1992-07-23 | 1993-09-07 | Pole/Zero Corporation | Transponder control of animal whereabouts |
| US6064308A (en) * | 1996-10-25 | 2000-05-16 | Pole/Zero Corporation | RF signaling system and system for controlling the whereabouts of animals using same |
| US6166643A (en) * | 1997-10-23 | 2000-12-26 | Janning; Joseph J. | Method and apparatus for controlling the whereabouts of an animal |
| US6446049B1 (en) | 1996-10-25 | 2002-09-03 | Pole/Zero Corporation | Method and apparatus for transmitting a digital information signal and vending system incorporating same |
-
1984
- 1984-12-25 JP JP27212684A patent/JPS61149880A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63171385A (en) * | 1986-10-22 | 1988-07-15 | ウーテーアー・エヌ・アー・フアブリック・デボーシュ | Passive transponder |
| JPS63144281A (en) * | 1986-12-08 | 1988-06-16 | Toshiba Eng Co Ltd | Frequency sensor |
| US5241923A (en) * | 1992-07-23 | 1993-09-07 | Pole/Zero Corporation | Transponder control of animal whereabouts |
| US6064308A (en) * | 1996-10-25 | 2000-05-16 | Pole/Zero Corporation | RF signaling system and system for controlling the whereabouts of animals using same |
| US6446049B1 (en) | 1996-10-25 | 2002-09-03 | Pole/Zero Corporation | Method and apparatus for transmitting a digital information signal and vending system incorporating same |
| US6166643A (en) * | 1997-10-23 | 2000-12-26 | Janning; Joseph J. | Method and apparatus for controlling the whereabouts of an animal |
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