JPS61168735U

JPS61168735U -

Info

Publication number: JPS61168735U
Application number: JP5251285U
Authority: JP
Priority date: 1985-04-08
Filing date: 1985-04-08
Publication date: 1986-10-20

Description

[Brief explanation of drawings]

第１図は原子力発電所建屋内に本装置を設けた
一例を示す説明図、第２図は同要部説明図、第３
図は同ブロツク図、第４図は本考案の他の例を示
すブロツク図、第５図は同一ルートを最初に敷設
したケーブルを利用して本装置を用い、次のケー
ブルを延線する状態を示す平面的説明図。１，２…受信機、３…音声ＭＩＸ回路、４…送
信機、５…低周波電力用ケーブル、６，７…携帯
用送受信機、８…配電盤、９…携帯用受信専用機
、１０…結合コンデンサー、１１…絶縁トランス
、１２…ヘツドホン、１３…マイクロホン、１４
…同軸ケーブル、１５…高周波除去用コイル、１
６…フイルター、１７…アンテナ、１８…作業者
、１９…原子炉、２０…床コンクリート、２１…
電力用ケーブル。 Figure 1 is an explanatory diagram showing an example of installing this device in a nuclear power plant building, Figure 2 is an explanatory diagram of the main parts, and Figure 3 is an explanatory diagram showing an example of installing this device in a nuclear power plant building.
The figure shows the same block diagram, Figure 4 is a block diagram showing another example of the present invention, and Figure 5 shows the state in which this device is used to extend the next cable using the cable that was originally laid down the same route. FIG. 1, 2...Receiver, 3...Audio MIX circuit, 4...Transmitter, 5...Low frequency power cable, 6, 7...Portable transceiver, 8...Switching board, 9...Portable receiver only, 10...Coupling Capacitor, 11...Isolation transformer, 12...Headphone, 13...Microphone, 14
... Coaxial cable, 15 ... High frequency removal coil, 1
6... Filter, 17... Antenna, 18... Operator, 19... Nuclear reactor, 20... Floor concrete, 21...
Power cable.

Claims

[Scope of utility model registration request]

A plurality of receivers 1 and 2 are installed at appropriate positions within a building and are spaced apart from each other, and each of the receivers 1 and 2
an audio MIX circuit 3 that mixes each audio output S of;
a transmitter 4 that outputs a modulated wave _f3 using the audio output of the circuit 3 as a modulated input signal; a low-frequency power cable 5 connected to the output side of the transmitter 4 and laid within the building; portable transmitter/receiver 6, 7,
A wireless communication device in a concrete building, comprising: the low-frequency power cable 5 serving also as a transmitting antenna, and radiating weak radio waves from the low-frequency power cable 5.