JPS6113834A - Radio transmitting and receiving device - Google Patents

Radio transmitting and receiving device

Info

Publication number
JPS6113834A
JPS6113834A JP59134831A JP13483184A JPS6113834A JP S6113834 A JPS6113834 A JP S6113834A JP 59134831 A JP59134831 A JP 59134831A JP 13483184 A JP13483184 A JP 13483184A JP S6113834 A JPS6113834 A JP S6113834A
Authority
JP
Japan
Prior art keywords
station
radio
signal
transmitting
wireless
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
JP59134831A
Other languages
Japanese (ja)
Inventor
Masatoshi Hori
正敏 堀
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.)
Hochiki Corp
Original Assignee
Hochiki Corp
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 Hochiki Corp filed Critical Hochiki Corp
Priority to JP59134831A priority Critical patent/JPS6113834A/en
Publication of JPS6113834A publication Critical patent/JPS6113834A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To prevent radio interference even when the same carrier frequency is used and to obtain the many number of identificated signals by combining a home use information transmission line and a radio security system. CONSTITUTION:A master station 1n is provided with a calling device 4 and accesses sequentially salve stations 1a-1n and 1A-1N through the home use transmission line 20. When the slave station 1B is called, a radio transmitting and receiving device 2B discriminates a call signal and executes the transmitting operation. The other radio transmitting and receiving device 3B receives the said transmission radio wave and transmits a detection signal of a sensor 5. When the detection signal is normal, a radio wave is transmitted and when not normal, no radio wave is transmitted. Thus, when the transmitting and receiving device 2B receives the said radio wave, the slave station 1B issues alarm display of the slave station 1B and when the 2B does not receive the radio wave, the 2B issues alarm display. When a terminal device 6 is connected to radio transmitting and receiving devices 3A-3N, since the radio transmitting and receiving devices 2A-2N uses a control signal to modulate the carrier and transmit the result, the control signal is reproduced and outputted to the terminal device 6 to apply control corresponding to the control signal.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、家庭用情報伝送路システムを利用してセンサ
の検出信号あるいは端末器の表示制御等を無線方式によ
り行なうようにした無線式送受信装置に関する。
Detailed Description of the Invention (Field of Industrial Application) The present invention is a wireless transmission/reception method that uses a home information transmission line system to wirelessly control sensor detection signals or terminal device display control. Regarding equipment.

(従来技術) 近年、マイクロエレクトロニクス技術の進歩によりホー
ムオートメーションに対する要求が高まり、1本の同軸
ケーブルを使用して周波数分割多重伝送によりホームセ
キュリティシステム、家事管理システム、家庭内情報管
理システム、外部よりの情報管理システムに適合できる
家庭用情報伝送路システムが考えられている。
(Prior art) In recent years, advances in microelectronic technology have increased the demand for home automation. Frequency division multiplexing transmission using a single coaxial cable has enabled home security systems, housekeeping management systems, home information management systems, and external Home information transmission line systems that can be adapted to information management systems are being considered.

一方、家庭用セキュリティシステムにおいては、例えば
ガス警報を例にとると、ガスセンサから受信機へ無線に
にリガス漏れ検出信号を送信したり、受信機から端末器
へ無線により制御信号を送り、ガスの元栓を閉じる制御
を行なっている。
On the other hand, in a home security system, taking a gas alarm as an example, a gas leak detection signal is sent wirelessly from the gas sensor to the receiver, and a control signal is sent wirelessly from the receiver to the terminal device. The main valve is controlled to close.

(発明が解決しようとする問題点) しかしながら、このような従来の無線方式を採用したセ
キコリイティシステムにあっては、信号を識別するため
に搬送波を異ならせる方式をとっているが、予め定めら
れた周波数帯域では割り当てることのできる識別周波数
に制約があり、識別数を多くとれないという問題があっ
た。
(Problem to be Solved by the Invention) However, in the security system that employs such a conventional wireless method, a method is adopted in which carrier waves are different in order to identify signals. In the designated frequency band, there are restrictions on the identification frequencies that can be assigned, and there is a problem in that a large number of identification frequencies cannot be obtained.

(問題点を解決するための手段) 本発明は、このような問題点に鑑みてなされたもので、
家庭用情報伝送路システムと無線式セキフリティシステ
ムとを結合し、同一の搬送周波数を用いても混信するこ
となく且つ信号識別数も多く得られる無線式送受信装置
を提供することを目的とし次の構成をとるようにした・
(Means for solving the problems) The present invention was made in view of the above problems, and
The purpose of the present invention is to provide a wireless transmitter/receiver that combines a home information transmission line system and a wireless security system, and can obtain a large number of signal identifications without causing interference even when using the same carrier frequency. The structure is as follows.
.

即ち、伝送線で結合され信号の授受を行なう複数のステ
ーションと、これらのステーションの管轄内に設けた対
となる複数の無線送受信器とからなり、無線送受信器の
全て又は一部の搬送波を同一周波数にすると共に、対と
なる無線送受信器の一方を管轄のステーションに接続し
、また複数のステーションの内の所定のステーションは
ステーション側に接続された一方の無線送受信器を呼出
す信号を送出する呼出し手段を備え(メインステーショ
ン)、ステーション側無線送受信器は呼出し手段を備え
たメインステーションからの呼出し信号により送信可能
な状態に制御する手段を右し、対となる他方の無線送受
信器は送信可能状態とな−ったステーション側無線送受
信器からの送信信号によってのみ送信可能な状態に制御
する手段を備え、他方の無線送受信器からの送信信号を
ステーション側無線送受信器にて受信するようにしたも
のである。
In other words, it consists of a plurality of stations connected by transmission lines to send and receive signals, and a plurality of paired wireless transceivers installed within the jurisdiction of these stations. In addition to setting the frequency, one of the paired wireless transceivers is connected to the station in charge, and a predetermined station among the multiple stations sends out a signal to call one of the wireless transceivers connected to the station side. (main station), the station-side wireless transceiver is controlled to be in a transmittable state by a calling signal from the main station equipped with a calling means, and the other wireless transceiver in the pair is in a transmittable state. The device is equipped with means for controlling the state in which transmission is possible only by the transmission signal from the station-side wireless transceiver, and the station-side wireless transceiver receives the transmission signal from the other wireless transceiver. It is.

(実施例) 第1図は本発明の一実施例を示したブロック図である。(Example) FIG. 1 is a block diagram showing one embodiment of the present invention.

まず構成を説明すると、20は家庭用情報伝送路システ
ムを構成する伝送路であり、伝送路20としては一本の
同軸ケーブルが使用され、例えば集合住宅にあっては建
物の建築段階で予め全住戸に端末接続ができるように伝
送路20を敷設している。
First, to explain the configuration, reference numeral 20 is a transmission line that constitutes a household information transmission line system. A single coaxial cable is used as the transmission line 20. A transmission line 20 is installed so that terminals can be connected to residential units.

伝送路20には複数のステーション1a、1b。The transmission path 20 includes a plurality of stations 1a and 1b.

・・・1n及び1A、1B、・・・1Nが接続され、ス
テーション18〜1n及び1A〜1Nに適宜のユニット
を外部接続することにより家事管理システム、家庭内情
報管理システム、外部よりの情報管理システム、更に本
発明の対象として利用されるホームセキュリティシステ
ムを構成することができる。
...1n and 1A, 1B, ...1N are connected, and by externally connecting appropriate units to stations 18 to 1n and 1A to 1N, a housekeeping management system, a home information management system, and information management from the outside can be realized. The system can also be used to construct a home security system that can be used as a subject matter of the present invention.

ステーション18〜1n及び1A〜1Nには対となる複
数の無線送受信器2aと3a〜2nと30及び2Δと3
A〜2Nと3Nが設けられ、一方の無線送受信器2a〜
2n及び2A〜2Nをステーション18〜1n及びIA
−INに接続している。これらの無線送受信器2a〜2
n、3a−3n、2A〜2N及び3A〜3Nのすべてま
たは一部の搬送波は同一周波数、例えば70MHz帯ま
たは230MHzの周波数を使用している。更に、無線
送受信器2a〜3Nの送信出力は10m W以下であり
、1つの°住戸の範囲内での無線通信を行なう程度の送
信出力を有する。
The stations 18 to 1n and 1A to 1N have a plurality of paired wireless transceivers 2a, 3a to 2n and 30, and 2Δ and 3.
A~2N and 3N are provided, one wireless transmitter/receiver 2a~
2n and 2A to 2N to stations 18 to 1n and IA
- Connected to IN. These wireless transceivers 2a-2
All or some of the carrier waves of n, 3a-3n, 2A to 2N, and 3A to 3N use the same frequency, for example, a 70 MHz band or a 230 MHz frequency. Furthermore, the transmission power of the wireless transceivers 2a to 3N is 10 mW or less, which is enough to carry out wireless communication within the range of one residential unit.

次に、複数のステーション1a〜1N及び1A〜1Nの
内、特定のステーション、例えば第1図の実施例にあっ
てはステーション1nをメインステーションとしており
、メインステーションを構成J−るステーション1nに
は呼出し装置4が設けられ、呼出し装置4はポーリング
方式により他のステーション1a〜1n−1及び1A〜
1Nに接続された一方の無線送受信器2a〜2n−1及
び2A〜2Nを順次呼び出す呼出し信号を送出する機能
を有する。各ステーションに接続された無線送受信器1
8〜1n及び2A〜2Nのそれぞれは各ステーション毎
に割り当てられた特定の呼出し信号を識別し、各ステー
ションの管轄内に設けた他方の無線送受信器38〜3n
及び3A〜3Nに対し送信可能状態に制御される。一方
、各ステーションの管轄内に分離独立して設けられた他
方の無線送受信器38〜3n及び3A〜3Nは対応する
ステーション側の無線送受信器2a〜2n及び2A〜2
Nが呼出()装置4の呼出しを受けて受信可能状態とな
ったときに送出される送信信号を受信したときにのみ送
信可能な状態を作り出す機能を有する。この分離独立し
て設けた無線送受信器には、例えば無線送受信器3A〜
3Nに示すように、ガス漏れ、火災、盗難等を検出する
センサ5あるいはステーション側からの送信信号により
制御される端末器6が接続される。無線送受信器3A〜
3N側に設けられるセンサ5としては、定常監視状態に
おいて所定の信号出力を行ない、ガス漏れ。
Next, among the plurality of stations 1a to 1N and 1A to 1N, a specific station, for example, station 1n in the embodiment shown in FIG. A calling device 4 is provided, and the calling device 4 uses a polling method to call other stations 1a to 1n-1 and 1A to
It has a function of sending out a calling signal to sequentially call one of the wireless transceivers 2a to 2n-1 and 2A to 2N connected to 1N. Wireless transceiver 1 connected to each station
Each of 8-1n and 2A-2N identifies a specific calling signal assigned to each station, and the other wireless transceiver 38-3n provided within the jurisdiction of each station.
and 3A to 3N are controlled to be ready for transmission. On the other hand, the other radio transceivers 38 to 3n and 3A to 3N provided separately and independently within the jurisdiction of each station are the radio transceivers 2a to 2n and 2A to 2 on the corresponding station side.
It has a function of creating a state in which it can transmit only when it receives a transmission signal that is sent out when N receives a call from the calling device 4 and becomes in a state in which it can receive data. The radio transceivers provided separately and independently include, for example, radio transceivers 3A to 3A.
As shown in 3N, a sensor 5 for detecting gas leakage, fire, theft, etc. or a terminal device 6 controlled by a signal transmitted from the station side is connected. Wireless transceiver 3A~
The sensor 5 provided on the 3N side outputs a predetermined signal in the steady monitoring state to detect gas leakage.

火災、盗難等の異常を検出したとぎに信号出力を停止す
る所謂フェイルセーフ方式のセンサが使用されており、
例えばセンサ故障が起きた場合にも信号出力が停止する
ことで、ステーション側でセンサの異常がわかるように
している。勿論、センサ5としては正常状態、異常検出
、故障の三段階の異なった信号出力を行なうものを使用
してもよい。
A so-called fail-safe sensor is used, which stops signal output when an abnormality such as fire or theft is detected.
For example, in the event of a sensor failure, signal output is stopped, allowing the station to detect an abnormality in the sensor. Of course, the sensor 5 may be one that outputs signals in three different stages: normal state, abnormality detection, and failure.

第2図は第1図の実施例にお()るステーション側に接
続される無線送受信器2の一実施例を示したブロック図
であり、メインステーションに設けた呼出し装置4から
の呼出し信号を判別し、自己の呼出しを判別したときに
無線送受信器を送信可能状態に制御するコントローラ1
0ど、コントローラ10の制御出力により送信動作を行
なって各ステーション毎に同一周波数となる搬送波をア
ンテナ9より送信する送信部8と、アンテナ9で受信じ
た分離独X′lシて設(プた他方の無線送受信器からの
送信信号を受信して受信信号をメインステーションへ出
力する受信部7とで構成される。また、端末器を制御す
る場合には、メインステーション側からの制御信号によ
って送信部8で搬送波を変調し、アンテナ9より送信す
る。
FIG. 2 is a block diagram showing an embodiment of the wireless transceiver 2 connected to the station side in the embodiment shown in FIG. controller 1 that controls the wireless transceiver to be ready for transmission when it determines that it is being called;
0, a transmitting section 8 which performs a transmitting operation according to the control output of the controller 10 and transmits a carrier wave having the same frequency for each station from an antenna 9, and a separate German X'l signal received by the antenna 9. and a receiving section 7 that receives the transmission signal from the other wireless transceiver and outputs the received signal to the main station.In addition, when controlling the terminal device, the terminal device is The transmitter 8 modulates the carrier wave and transmits it from the antenna 9.

第3図は第1図の実施例における各ステーションの管轄
内に分離独立して設けた他方の無線送受信器3の一実施
例を示したブロック図であり、アンテナ13で受信した
第2図に示すステーション側の無線送受信器2からの送
信信号を受信する受信部11を有し、受信部11は送信
信号を所定時間受信したときにコントローラ14に受信
出力を与え、コン1〜〇−ラ14の制御出力で送信部1
2を送信可能状態としてアンテナ13よりステーション
側の無線送受信器2に信号送出を行なう。また、受信部
11には端末器が接続されており、ステーション側より
送信された制御信号を受信解読して端末部に、例えばガ
スの元栓等を遮断させるための制御信号を出力する。一
方、送信部12にはセンサの出力が接続され、コントロ
ーラ14ににる送信可能状態においてセンサ出力が平常
出力のときアンテナ13によりステーション側へ送信し
、センサ出力が異常検出出力のときは送信を行なわない
にうにしている。
FIG. 3 is a block diagram showing an embodiment of the other radio transmitter/receiver 3 provided separately and independently within the jurisdiction of each station in the embodiment of FIG. It has a receiving section 11 that receives a transmission signal from the radio transmitter/receiver 2 on the station side shown in FIG. Transmitter 1 with the control output of
2 is enabled for transmission, and a signal is sent from the antenna 13 to the radio transceiver 2 on the station side. Further, a terminal unit is connected to the receiving unit 11, which receives and decodes a control signal transmitted from the station side, and outputs a control signal to the terminal unit for, for example, shutting off a gas main valve. On the other hand, the output of the sensor is connected to the transmitter 12, and when the controller 14 is in a transmittable state and the sensor output is a normal output, it is transmitted to the station side, and when the sensor output is an abnormality detection output, it is transmitted to the station side. I'm trying not to do it.

次に、上記の実施例の動作を説明する。Next, the operation of the above embodiment will be explained.

ステーション1nは呼出し装置4を備えることでメイン
ステーションとして位置付けられており、呼出し装置4
はステーション1nを介して伝送路20にサブステーシ
ョンとして位置付(プられる他のステーション10〜1
n 及び1A〜1Nを順次アクセスする呼出し信号を繰
り返し送出しでいる。この呼出し装置4からの呼出し信
号にJ:す、例えばステーション1Bが呼び出されたと
すると、無線送受信器2Bにおける呼出し信号の判別で
・送信動作性なう。即ち、無線送受信器2Bは、第2図
に示す構成を有し、コントローラ10でメインステーシ
ョンによる自己の呼出しを判別し、送信部8に制御信号
を出力して一定時間、送信動作を行なわせ、アンテナ9
より分離独立して設けた他方の無線送受信器3Bに信号
電波を送信する。
The station 1n is positioned as a main station by being equipped with a calling device 4.
is located as a substation on the transmission line 20 via the station 1n.
A call signal for sequentially accessing 1A to 1N and 1A to 1N is repeatedly sent. If, for example, the station 1B is called by the calling signal from the calling device 4, the radio transmitter/receiver 2B determines the transmission operation by determining the calling signal. That is, the wireless transceiver 2B has the configuration shown in FIG. 2, and the controller 10 determines whether it is being called by the main station, outputs a control signal to the transmitter 8, and causes the transmitter 8 to perform a transmitting operation for a certain period of time. antenna 9
The signal radio wave is transmitted to the other wireless transmitter/receiver 3B which is provided separately and independently.

他方の無線送受信器3Bにあっては、ステーション側の
無線送受信器2Bからの送信電波を受信し、センサ5で
検出した検出信号の送出を行なう。
The other wireless transmitter/receiver 3B receives the transmitted radio wave from the station side wireless transmitter/receiver 2B, and sends out the detection signal detected by the sensor 5.

即ち、無線送受信器3Bは、第3図に示す構成を有し、
アンテナ13で受信したステーション側からの送信信号
を受信部11で受信し、受信出力が得られるとコントロ
ーラ14は一定時間、送信部12を送信可能状態とし、
送信部12にはセンサ5の検出出力が与えられているこ
とからセンサ検出出力に基づいてアンテナ13より送信
信号をステーション側に送出する。ここで、送信部12
はセンサ検出信号が正常なときには一定時間、例えば数
秒間、アンテナ13より電波を送信し、センサで異常が
検出されたときには電波の送出を行なわない。
That is, the wireless transceiver 3B has the configuration shown in FIG.
When the receiving unit 11 receives a transmission signal from the station side received by the antenna 13 and a reception output is obtained, the controller 14 sets the transmitting unit 12 in a transmittable state for a certain period of time,
Since the detection output of the sensor 5 is provided to the transmitter 12, a transmission signal is sent to the station side from the antenna 13 based on the sensor detection output. Here, the transmitter 12
When the sensor detection signal is normal, the antenna 13 transmits radio waves for a certain period of time, for example, several seconds, and when the sensor detects an abnormality, it does not transmit radio waves.

従って、ステーション側の無線送受信器2Bでセンサ側
の無線送受信器3Bからの送信電波が受信されたときに
は正常な状態にあることがら、ステーション1Bでの警
報表示は行なわれず、一方、センサ側の無線送受信器3
BJり電波の送出が行なわれないときには、センサ5の
異常検出が行なわれているものとしてステーション1B
において警報表示を行なう。
Therefore, when the wireless transmitter/receiver 2B on the station side receives the transmitted radio wave from the wireless transmitter/receiver 3B on the sensor side, it is in a normal state, and no alarm is displayed at the station 1B. Transmitter/receiver 3
When BJ radio waves are not transmitted, it is assumed that an abnormality has been detected in the sensor 5, and the station 1B
An alarm will be displayed at

次に、ステーション1Δ、INに示−リ−ように、他方
の無線送受信器3A、3Nに端末器6を接続した場合に
は、ステーション側の無線送受信器2Δ、2Nで搬送波
を制御信号により変調して送出していることから、この
制御信号を第3図に示す受信部11で再生して端末器6
に出力し、例えばガス漏れ検出に対応して制御信号が送
られているときには、ガスの元栓を閉じる制御を行なう
Next, when the terminal device 6 is connected to the other wireless transceiver 3A, 3N as shown at stations 1Δ, IN, the carrier wave is modulated by the control signal in the radio transceiver 2Δ, 2N on the station side. Therefore, this control signal is reproduced by the receiving section 11 shown in FIG.
For example, when a control signal is sent in response to gas leak detection, control is performed to close the gas main valve.

このような構成は他のステーション1a〜1n側につい
ても同様である。尚、ステーション10は呼出し装置4
の接続によりメインステーションを構成することから、
例えば集合住宅等においてはメインステーションが集中
監視室に設置され、このためステーション1nには無線
送受信器2n。
Such a configuration is the same for the other stations 1a to 1n. Note that the station 10 is the calling device 4.
Since the main station is configured by connecting the
For example, in an apartment complex, the main station is installed in a central monitoring room, and therefore the station 1n is equipped with a wireless transmitter/receiver 2n.

3nを接続しないこととなる。また、上記の実施例は各
ステーションで異常表示を行なう場合を例にとるもので
あったが、メインステーションにセンサ検出信号を伝送
して集中監視するようにしてもよい。更に、伝送路20
に接続された複数のステーションは、呼出し装置4を接
続することで適宜にメインステーションとして定めるこ
とができる。更にまた、各ステーションの管轄内に分離
独立して設けた無線送受信器3a〜3n及び3A〜3N
には、センサ5と端末器6の両方を接続するようにして
もよい。
3n will not be connected. Furthermore, although the above embodiments have been exemplified in which an abnormality is displayed at each station, a sensor detection signal may be transmitted to the main station for centralized monitoring. Furthermore, the transmission line 20
A plurality of stations connected to the main station can be appropriately defined as a main station by connecting the calling device 4. Furthermore, wireless transceivers 3a to 3n and 3A to 3N are provided separately and independently within the jurisdiction of each station.
In this case, both the sensor 5 and the terminal 6 may be connected.

(発明の効果) 以上説明してきたように本発明によれば、伝送線で結合
された信号の授受を行なう複数のステーションと、これ
らのステーションの管轄内に設けた対となる複数の無線
送受信器とからなり、無線送受信器のすべてまたは一部
の搬送波を同一周波数にすると共に、対となる無線送受
信器の一方を管轄のステーションに接続し、また複数の
ステーションの内の所定のステーションは、ステーショ
ン側に接続された一方の無線送受信器を呼び出1信号を
送出する呼出し手段を備え、ステーション側無線送受信
器は呼出しを受けたときに送信可能な状態に制御する手
段を有し、また、対となる他方の無線送受信器は送信可
能状態となったステーション側無線送受信器からの送信
信号によってのみ送信可能な状態に制御する手段を備え
、他方の無線送受信器からの送信信号をステーション側
無線送受信器にて受信するようにしたため、各ステーシ
ョンの無線送受信器はメインステーションがらの呼出し
を受けたときにのみ無線方式により信号の授受を行ない
、各ステーション毎に同一の搬送周波数を使用できるこ
とから、混信を起こづことなく信号識別数を従来の周波
数分割方式に比べて大幅に増やすことができ、しかも伝
送路に接続しIζステーション側とセンサや端末側とは
無線方式で信号の授受を行なうことから、信号線接続が
不要となってセンサ及び端末器の設置工事が極めて容易
であり、センサや端末器の増設、変更を任意に行なうこ
とができる。
(Effects of the Invention) As described above, according to the present invention, there are a plurality of stations that transmit and receive signals coupled through transmission lines, and a plurality of paired wireless transceivers provided within the jurisdiction of these stations. The carrier waves of all or part of the wireless transceivers are made to have the same frequency, and one of the paired wireless transceivers is connected to the station in charge, and a predetermined station among the plurality of stations is connected to the station. The radio transceiver on the station side is equipped with a calling means for sending a call 1 signal to one of the radio transceivers connected to the station side, and the radio transceiver on the station side has means for controlling it to a transmittable state when receiving a call. The other wireless transmitter/receiver is equipped with a means for controlling the transmitter to be able to transmit only by the transmitting signal from the station side wireless transmitter/receiver that is in the transmittable state, and the transmitter/receiver is controlled to be able to transmit only by the transmitting signal from the station side wireless transmitter/receiver that is in the transmittable state. Since each station's wireless transmitter/receiver transmits and receives signals wirelessly only when it receives a call from the main station, each station can use the same carrier frequency, reducing interference. It is possible to greatly increase the number of signal identifications compared to the conventional frequency division method without causing problems, and because it is connected to the transmission path and the Iζ station side and the sensor and terminal side exchange signals wirelessly. Since there is no need to connect signal lines, installation work for sensors and terminals is extremely easy, and sensors and terminals can be added or changed as desired.

【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を示したブロック図、第2図
はステーション側無線送受信器の実施例を示したブロッ
ク図、第3図はセンサ側無線送受信器の実施例を示した
ブロック図である。 18〜1n、1A〜1Nニスチージヨン2a 〜2n 
、2A 〜2N、3a 〜3n 。 3A〜3N:無線送受信器 4:呼出し装置 5:センサ 6:端末器 7.11.:受信部 8.12:送信部 9.13:アンテナ 10.14:コントローラ 20:伝送路
Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a block diagram showing an embodiment of the station side wireless transceiver, and Fig. 3 is a block diagram showing an embodiment of the sensor side wireless transceiver. It is a diagram. 18~1n, 1A~1N Nistijion 2a~2n
, 2A to 2N, 3a to 3n. 3A to 3N: Wireless transceiver 4: Calling device 5: Sensor 6: Terminal 7.11. : Receiving section 8.12: Transmitting section 9.13: Antenna 10.14: Controller 20: Transmission line

Claims (1)

【特許請求の範囲】[Claims] 伝送線で結合され信号の授受を行なう複数のステーショ
ンと、これらのステーションの管轄内に設けた対となる
複数の無線送受信器とからなり、該無線送受信器の全て
又は一部の搬送波を同一周波数とすると共に、対となる
無線送受信器の一方を管轄のステーションに接続し、前
記ステーションの内の所定のステーションはステーショ
ン側に接続された前記無線送受信器の一方を呼出す信号
を送出する呼出し手段を備え、前記一方の無線送受信機
は該ステーションからの呼出し信号により送信可能な状
態に制御する手段を有し、対となる他方の無線送受信器
は送信可能状態となった一方の無線送受信器からの送信
信号によってのみ送信可能な状態に制御する手段を備え
、他方の無線送受信器からの送信信号を一方の無線送受
信器にて受信することを特徴とする無線式送受信装置。
It consists of a plurality of stations connected by transmission lines to send and receive signals, and a plurality of paired wireless transceivers installed within the jurisdiction of these stations, and all or some of the carrier waves of the wireless transceivers are transmitted at the same frequency. At the same time, one of the paired wireless transceivers is connected to a station in charge, and a predetermined station among the stations has calling means for sending a signal to call one of the wireless transceivers connected to the station side. The one wireless transmitter/receiver has means for controlling it to a transmittable state in response to a paging signal from the station, and the other paired wireless transmitter/receiver receives a signal from the one wireless transmitter/receiver that is in a transmittable state. 1. A wireless transmitting/receiving device, comprising means for controlling a state in which transmission is possible only by a transmitted signal, and wherein one wireless transmitting/receiving device receives a transmitted signal from another wireless transmitting/receiving device.
JP59134831A 1984-06-29 1984-06-29 Radio transmitting and receiving device Pending JPS6113834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59134831A JPS6113834A (en) 1984-06-29 1984-06-29 Radio transmitting and receiving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59134831A JPS6113834A (en) 1984-06-29 1984-06-29 Radio transmitting and receiving device

Publications (1)

Publication Number Publication Date
JPS6113834A true JPS6113834A (en) 1986-01-22

Family

ID=15137480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59134831A Pending JPS6113834A (en) 1984-06-29 1984-06-29 Radio transmitting and receiving device

Country Status (1)

Country Link
JP (1) JPS6113834A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62172837A (en) * 1986-01-27 1987-07-29 Matsushita Electric Works Ltd Wireless local transmission system
JPS62172836A (en) * 1986-01-27 1987-07-29 Matsushita Electric Works Ltd Wireless local transmission system
JPS62242495A (en) * 1986-04-15 1987-10-23 Matsushita Electric Ind Co Ltd Building managing device
JPH01225233A (en) * 1988-03-04 1989-09-08 Toshiba Corp Radio communication system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991513A (en) * 1972-12-30 1974-09-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991513A (en) * 1972-12-30 1974-09-02

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62172837A (en) * 1986-01-27 1987-07-29 Matsushita Electric Works Ltd Wireless local transmission system
JPS62172836A (en) * 1986-01-27 1987-07-29 Matsushita Electric Works Ltd Wireless local transmission system
JPS62242495A (en) * 1986-04-15 1987-10-23 Matsushita Electric Ind Co Ltd Building managing device
JPH01225233A (en) * 1988-03-04 1989-09-08 Toshiba Corp Radio communication system

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