JPS59155208A - Bag burglar-proof apparatus - Google Patents

Bag burglar-proof apparatus

Info

Publication number
JPS59155208A
JPS59155208A JP2891683A JP2891683A JPS59155208A JP S59155208 A JPS59155208 A JP S59155208A JP 2891683 A JP2891683 A JP 2891683A JP 2891683 A JP2891683 A JP 2891683A JP S59155208 A JPS59155208 A JP S59155208A
Authority
JP
Japan
Prior art keywords
bag
transmitter
receiver
ultrasonic signal
ultrasonic
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
JP2891683A
Other languages
Japanese (ja)
Inventor
川口 裕敏
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.)
Panasonic Ecology Systems Co Ltd
Original Assignee
Matsushita Seiko Co Ltd
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 Matsushita Seiko Co Ltd filed Critical Matsushita Seiko Co Ltd
Priority to JP2891683A priority Critical patent/JPS59155208A/en
Publication of JPS59155208A publication Critical patent/JPS59155208A/en
Pending legal-status Critical Current

Links

Landscapes

  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は超音波を利用した鞄の盗難防止装置に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a bag anti-theft device using ultrasonic waves.

従来夕す構成とその問題点 従来の鞄盗難防止装置は、鞄に装着した送信機が発する
電波によって鞄のまわりに一定の電磁界を作る。前記鞄
の持ち主は受信機を身に付けており、鞄とその持ち主の
距離が大きくなシ、受信機の受信する電波のレベルがち
ら゛かじめ定められた一定の値を下まわると、警報を発
して注意を促すというものであった。しかし、現代社会
においては、不法高出力な無線局、電気製品からの不用
輻射、各種電波応用機器から発射される電波等、多くの
電波雑音が存在しており又、これらの電波雑音は比較的
長く続くものが多い為、その影響を無くすには回路的に
相当なコストアップとなる。一方、高速鉄道、航空機等
、その安全運行に電子機器の占める役割が大なるもので
は、車両内、機内で不用意に電波を発することは、それ
ら電子機器の誤動作を招く恐れがあシ、安全運行正極め
て地検という問題点があった。
Conventional structure and its problems Conventional bag theft prevention devices create a certain electromagnetic field around the bag using radio waves emitted by a transmitter attached to the bag. The owner of the bag wears a receiver, and if the distance between the bag and the owner is large and the level of radio waves received by the receiver falls below a predetermined value, an alarm will be issued. It was intended to alert people by issuing a warning. However, in modern society, there is a lot of radio noise, such as illegal high-power radio stations, unnecessary radiation from electrical products, and radio waves emitted from various radio wave application devices, and these radio noises are relatively small. Since many of them last for a long time, eliminating this effect would require a considerable increase in circuit costs. On the other hand, in areas such as high-speed railways and aircraft, where electronic devices play a major role in the safe operation of these vehicles, inadvertently emitting radio waves inside the vehicle or aircraft may cause the electronic devices to malfunction, resulting in safety. There was a problem with the district attorney's office regarding proper operation.

発明の目的 本発明はこのような従来の欠点を除去するものであり、
外部雑音に強く、他の機器へ悪影響を及ぼすことの少な
い超音波を利用した鞄盗難防止装置を提供するものであ
る。
OBJECTS OF THE INVENTION The present invention obviates these conventional drawbacks,
To provide a bag theft prevention device using ultrasonic waves that is resistant to external noise and has little adverse effect on other devices.

発明の構成 本発明の鞄盗難防止装置は、超音波信号を発する送信機
と前記送信機が発した超音波信号を受信する受信機から
なシ、送信機と受信機の距離即ち鞄とその所持者の距離
が大きくなって受信機での信号受信レベルが、あらかじ
め定められたある値以下となった時に警報を発するもの
である。
Structure of the Invention The bag theft prevention device of the present invention includes a transmitter that emits an ultrasonic signal and a receiver that receives the ultrasonic signal that the transmitter emits, and the distance between the transmitter and the receiver, that is, the bag and its possession. An alarm is issued when the distance between the person and the person increases and the signal reception level at the receiver falls below a certain predetermined value.

実施例の説明 以下本発明の一実施例を説明する。Description of examples An embodiment of the present invention will be described below.

第1図において、1は鞄に付けた送信機で外来雑音によ
る影響を避ける為、第2図に示すようにコード化された
パルス2により構成される超音波信号3を送信している
。4は前記鞄の所持者が身に付けた受信機で、送信機1
の送信機から送られて来る、コード化された超音波信号
を受信し、信号の協ベルがあらかじめ定められた、ある
値以下となると、鞄がその持ち主の専有を離脱するとし
て、警報音6を鳴らし鞄の持ち主に注意を促す。
In FIG. 1, reference numeral 1 denotes a transmitter attached to a bag, which transmits an ultrasonic signal 3 composed of coded pulses 2 as shown in FIG. 2 in order to avoid the influence of external noise. 4 is a receiver worn by the holder of the bag, and transmitter 1
When the coded ultrasonic signal sent from the transmitter is received, and the signal level falls below a predetermined value, the bag will leave the owner's possession and an alarm will sound 6. sounds to alert the owner of the bag.

ここで、自然界での超音波雑音について述べると、自然
界にも超音波雑音は存在するが、その頻度は電波雑音に
比らべれば極小で、持続時間も極短い為、例えば送信機
から送られる超音波信号を適当なパルスにすれば、受信
機で信号か雑音かを判別するのは容易である。
Here, talking about ultrasonic noise in the natural world, ultrasonic noise exists in the natural world, but its frequency is extremely small compared to radio noise, and its duration is extremely short, so for example, it is transmitted from a transmitter. If the ultrasonic signal received is made into an appropriate pulse, it is easy for the receiver to determine whether it is a signal or noise.

なお上記実施例においては送信機を鞄に付け、受信機を
鞄の持ち主が身に付けるとしだが、逆に受信機を鞄に付
け、送信機を鞄の持ち主が身に付けても良い。
In the above embodiment, the transmitter is attached to the bag and the receiver is worn by the owner of the bag, but conversely, the receiver may be attached to the bag and the transmitter is worn by the owner of the bag.

発明の効果 このように本発明によれば、従来の電波に換えて超音波
をその信号伝送媒体とする為、外来雑音による影響を受
けに<<、又、他の機器へ悪影響を及ぼすことも少なく
、より信頼性が高くなるという効果が発揮されるもので
ある。
Effects of the Invention As described above, according to the present invention, since ultrasonic waves are used as the signal transmission medium instead of conventional radio waves, the device is less affected by external noise and may have an adverse effect on other equipment. This has the effect of increasing reliability.

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

第1図は本発明の一実施例における鞄盗難防止装眞の7
使用例を示す側面図、第2図は超音波信号のパルス波形
図である。 1・・・・・・送信機、3・・・・・・超音波信号、4
・・・・・・受信機、5・・・・・・警報。
Fig. 1 shows the structure of a bag theft prevention system according to an embodiment of the present invention.
A side view showing an example of use, and FIG. 2 is a pulse waveform diagram of an ultrasonic signal. 1...Transmitter, 3...Ultrasonic signal, 4
...... Receiver, 5... Alarm.

Claims (1)

【特許請求の範囲】[Claims] 超音波信号を発する送信機と前記送信機が発した超音波
信号を受信する受信機からなり、この受信機は信号受信
レベルが、あらかじめ定められたある値以下となった時
に警報を発する構成とした鞄盗難防止装置。
It consists of a transmitter that emits an ultrasonic signal and a receiver that receives the ultrasonic signal emitted by the transmitter, and the receiver is configured to issue an alarm when the signal reception level falls below a certain predetermined value. Bag anti-theft device.
JP2891683A 1983-02-23 1983-02-23 Bag burglar-proof apparatus Pending JPS59155208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2891683A JPS59155208A (en) 1983-02-23 1983-02-23 Bag burglar-proof apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2891683A JPS59155208A (en) 1983-02-23 1983-02-23 Bag burglar-proof apparatus

Publications (1)

Publication Number Publication Date
JPS59155208A true JPS59155208A (en) 1984-09-04

Family

ID=12261719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2891683A Pending JPS59155208A (en) 1983-02-23 1983-02-23 Bag burglar-proof apparatus

Country Status (1)

Country Link
JP (1) JPS59155208A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05293008A (en) * 1992-04-17 1993-11-09 Terukiyo Kitazawa Apparatus for preventing hand baggage from being lost

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05293008A (en) * 1992-04-17 1993-11-09 Terukiyo Kitazawa Apparatus for preventing hand baggage from being lost

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