JPS6381543U - - Google Patents
Info
- Publication number
- JPS6381543U JPS6381543U JP17649886U JP17649886U JPS6381543U JP S6381543 U JPS6381543 U JP S6381543U JP 17649886 U JP17649886 U JP 17649886U JP 17649886 U JP17649886 U JP 17649886U JP S6381543 U JPS6381543 U JP S6381543U
- Authority
- JP
- Japan
- Prior art keywords
- building
- line
- transmitter
- signal
- frequency
- 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
- 238000012806 monitoring device Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Near-Field Transmission Systems (AREA)
Description
第１図はこの考案の一実施例を示す回路構成図
、第２図は送信機のブロツク図、第３図は受信機
のブロツク図である。
１……放送機器、２ａ，２ｂ……ウエーブトラ
ツプ、３ａ，３ｂ……線路、４ａ，４ｂ，４ｃ…
…スピーカ、５……トロイダルコア、６……送信
機、７……スイツチ、８ａ，８ｂ，８ｃ……浮遊
容量、９……受信機。
FIG. 1 is a circuit diagram showing an embodiment of this invention, FIG. 2 is a block diagram of a transmitter, and FIG. 3 is a block diagram of a receiver. 1...Broadcast equipment, 2a, 2b...Wave trap, 3a, 3b...Line, 4a, 4b, 4c...
... Speaker, 5 ... Toroidal core, 6 ... Transmitter, 7 ... Switch, 8a, 8b, 8c ... Stray capacitance, 9 ... Receiver.
Claims (1)
たスピーカとを接続する線路と、前記建物の監視
装置に発生したアラーム信号により特定のトーン
信号で変調した高周波信号として発信する送信機
と、この送信機と前記線路を電磁的に結合して送
信機からの高周波信号を線路に導く高周波トラン
スと、前記線路から放射される高周波信号を受信
し、復調して当該トーン信号を検出し、アラーム
信号を発信する受信機とよりなる建物内巡回者連
絡装置。 A line connecting the output end of broadcasting equipment in the building and a speaker installed in the building, and a transmitter that emits a high-frequency signal modulated with a specific tone signal by an alarm signal generated in the monitoring device of the building. , a high-frequency transformer that electromagnetically couples the transmitter and the line to guide the high-frequency signal from the transmitter to the line; and a high-frequency transformer that receives the high-frequency signal radiated from the line, demodulates it, and detects the tone signal; A building patrol communication device consisting of a receiver that transmits an alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17649886U JPS6381543U (en) | 1986-11-17 | 1986-11-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17649886U JPS6381543U (en) | 1986-11-17 | 1986-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6381543U true JPS6381543U (en) | 1988-05-28 |
Family
ID=31116798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17649886U Pending JPS6381543U (en) | 1986-11-17 | 1986-11-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6381543U (en) |
-
1986
- 1986-11-17 JP JP17649886U patent/JPS6381543U/ja active Pending