JPS631784B2 - - Google Patents
Info
- Publication number
- JPS631784B2 JPS631784B2 JP16361579A JP16361579A JPS631784B2 JP S631784 B2 JPS631784 B2 JP S631784B2 JP 16361579 A JP16361579 A JP 16361579A JP 16361579 A JP16361579 A JP 16361579A JP S631784 B2 JPS631784 B2 JP S631784B2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- squelch
- modulation input
- relay
- unit
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Description
【発明の詳細な説明】
本発明は市町村防災行政無線等２系統の通信回
線に対して１回線の中継回線しか許されない無線
中継局の子局に対する話中音送出方式に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a system for transmitting a busy tone to a slave station of a wireless relay station, which allows only one relay line for two communication lines such as municipal disaster prevention administrative radio.
市町村防災行政無線等においては、第１と第２
の２系統の通信回線があるが、電波伝搬上の条件
で山上中継局を必要とすることがある。ただし、
この場合においても、中継回線は２回線を持つこ
とが許されず、１回線にて親局からの遠隔制御に
よつて切換使用することがある。よつて、１系が
運用中には２系の子局から発信して来ても親局で
は応答する手段がない。 In municipal disaster prevention administrative radio, etc., 1st and 2nd
There are two types of communication lines, but depending on radio wave propagation conditions, a mountaintop relay station may be required. however,
Even in this case, the relay line is not allowed to have two lines, and one line may be switched and used by remote control from the master station. Therefore, while system 1 is in operation, the master station has no means to respond even if a slave station of system 2 makes a call.
しかして、従来、この種の２系統１回線中継方
式において、非指定側の子局向無線装置系は子局
よりの着信があつても何ら信号もまた音声も返す
ことがなく、発信した子局は電波が中継局に届い
ていないのか、それとも中継局が話中か区別がつ
かず、運用上不安がある。 Conventionally, in this type of two-system, one-line relay system, the wireless device system for the slave station on the non-designated side does not return any signal or voice even if a call is received from the slave station, and the transmitter The station is unable to tell whether the radio waves are not reaching the relay station or whether the relay station is busy, causing operational concerns.
本発明は以上の点に鑑み、このような問題を解
決すべくなされた無線中継局の話中音送出方式を
提供するもので、１系が運用中に２系の子局から
発信があつた場合中継局にて２系の子局に話中音
を送出しようとするものであつて、非指定側子局
向無線機に着信があり、スケルチリレーが動作す
ると、一定時間発振器が作動して同子局無線機変
調入力に信号を加えて子局に話中であることを知
らせるようにしたものである。 In view of the above-mentioned points, the present invention provides a busy tone transmission system for wireless relay stations that is designed to solve such problems. In this case, a relay station is trying to send a busy tone to a slave station of system 2, and when a call is received on a wireless device for a non-designated slave station and the squelch relay is activated, the oscillator is activated for a certain period of time. A signal is added to the radio modulation input of the slave station to notify the slave station that it is busy.
以下、図面に基づき本発明の実施例を詳細に説
明する。 Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
図は本発明の一実施例を示すブロツク図であ
る。図において、１S，１Rは親局向中継回線用送
信機および受信機、２S，２Rは子局向１号機系の
送信機および受信機、３S，３Rは子局向２号機系
の送信機および受信機で、これらはそれぞれ親局
向無線装置１と子局向１号機無線装置２および子
局向２号機無線装置３を構成している。４は子局
向１号機および２号機無線装置２，３の受信機２
Ｒ，３Rの受信出力を合成する１号機系および２号
機号系の受信出力合成器で、その出力は親局向無
線装置１の送信機１Sの変調入力に加えられるよ
うに構成されている。５は親局向無線装置１の受
信機１Rの出力によつて制御される１号機系およ
び２号機系の変調入力切換リレー、５ａ，５ｂは
変調入力切換リレー５の接点である。 The figure is a block diagram showing one embodiment of the present invention. In the figure, 1 S and 1 R are the relay line transmitter and receiver for the master station, 2 S and 2 R are the transmitters and receivers of the No. 1 system for the slave station, and 3 S and 3 R are the 2 transmitter and receiver for the slave station. The transmitter and receiver of the No. 1 system constitute a master station wireless device 1, a No. 1 wireless device 2 for the slave station, and a No. 2 wireless device 3 for the slave station, respectively. 4 is the receiver 2 of the No. 1 and No. 2 wireless devices 2 and 3 for slave stations;
A reception output combiner for the No. 1 system and No. 2 system that combines the reception outputs of R and 3R , and is configured so that its output is added to the modulation input of the transmitter 1S of the master station radio device 1. There is. Reference numeral 5 designates modulation input switching relays for the first and second system controlled by the output of the receiver 1 R of the master station radio device 1; 5a and 5b designate contacts of the modulation input switching relay 5;
６は１号機系用の話中音発振器、７は子局向１
号機無線装置２の受信機２Rのスケルチ電圧によ
つて駆動されるスケルチリレーの接点（スケルチ
接点）で、このスケルチ接点７の閉成によつて上
記話中音発振器６は起動されるように構成されて
いる。８は２号機系用の話中音発振器、９は子局
向２号機無線装置３の受信機３Rのスケルチ電圧
によつて駆動されるスケルチリレーの接点（スケ
ルチ接点）で、このスケルチ接点９の閉成によつ
て上記話中音発振器８は起動されるように構成さ
れている。 6 is the busy tone oscillator for the 1st unit system, 7 is the slave station 1
A squelch relay contact (squelch contact) is driven by the squelch voltage of the receiver 2 R of the unit radio device 2, and the busy sound oscillator 6 is activated by closing the squelch contact 7. It is configured. 8 is a busy sound oscillator for the No. 2 system, and 9 is a contact (squelch contact) of a squelch relay driven by the squelch voltage of the receiver 3R of the No. 2 wireless device 3 for the slave station. The busy tone oscillator 8 is activated by the closing of the oscillator.
そして、子局向１号機無線装置２の送信機２S
の変調入力に１号機系および２号機系の変調入力
切換リレー５の接点５ａを介して１号機スケルチ
接点７で起動される１号機系用の話中音発振器６
が接続され、同様に子局向２号機無線装置３の送
信機３Sの変調入力に１号機系および２号機系の
変調入力切換リレー５の接点５ｂを介して２号機
スケルチ接点９で起動される２号機系用の話中音
発振器８が接続されている。 Then, the transmitter 2 S of the No. 1 wireless device 2 for the slave station
A busy sound oscillator 6 for the first machine system is activated by the first machine squelch contact 7 via the contact 5a of the modulation input switching relay 5 of the first machine system and the second machine system.
is connected to the modulation input of the transmitter 3S of the No. 2 wireless device 3 for the slave station, and is activated at the No. 2 squelch contact 9 via the contact 5b of the modulation input switching relay 5 of the No. 1 system and the No. 2 system. A busy tone oscillator 8 for the second machine system is connected.
つぎにこの図に示す実施例の動作を説明する。
今、図に示すように、１号機系および２号機系の
変調入力切換リレー５およびその接点５ａ，５ｂ
が親局からの遠隔制御その他により１号機指定に
なつているとき、子局向２号機無線装置３の受信
機３Rに着信があつたと仮定すると、２号機スケ
ルチリレーが動作してその接点９が閉成し、２号
機系用の話中音発振器８が一定時間、信号を送出
する。この信号が変調入力切換リレー５の接点５
ｂを介して２号機無線装置３の送信機３Sに加え
られ、子局に伝送される。また、１号機系および
２号機系の変調入力切換リレー５およびその接点
５ａ，５ｂが２号機指定になつているときの１号
機系用話中音発振器６および１号機スケルチ接点
７の動作も同様となる。 Next, the operation of the embodiment shown in this figure will be explained.
Now, as shown in the figure, the modulation input switching relay 5 of the No. 1 system and the No. 2 system and its contacts 5a and 5b
is designated as the No. 1 unit by remote control from the master station or other means, and assuming that a call is received at the receiver 3R of the No. 2 wireless device 3 for the slave station, the No. 2 squelch relay operates and its contact 9 is closed, and the busy tone oscillator 8 for the second machine system sends out a signal for a certain period of time. This signal is the contact 5 of the modulation input switching relay 5.
The signal is added to the transmitter 3S of the second radio device 3 via the terminal b, and transmitted to the slave station. Furthermore, when the modulation input switching relay 5 and its contacts 5a and 5b for the No. 1 and No. 2 systems are designated for No. 2, the operation of the No. 1 busy tone oscillator 6 and the No. 1 squelch contact 7 is the same. becomes.
このように、非指定側子局向無線機は、着信が
ありスケルチリレーが動作すると、一定時間話中
音発振器が作動して同子局無線機の変調入力に信
号を加えて子局に話中であることを知らせること
ができる。 In this way, when a non-designated side slave station radio receives a call and the squelch relay is activated, the busy tone oscillator is activated for a certain period of time and adds a signal to the modulation input of the slave station radio, causing the slave station to talk. It can let you know that it is inside.
なお、この実施例においては、変調入力切換リ
レー５およびその接点５ａ，５ｂ、ならびにスケ
ルチリレー接点７，９に機械的リレーを使用した
場合を例にとつて説明したが、本発明はこれに限
定されるものではなく、半導体のスイツチ動作す
る素子でも同様に用いることができる。また、こ
の実施例においては１号機系用と２号機系用の話
中音発振器にそれぞれ別個の発振器を用いる場合
を例にとつて説明したが、本発明はこれに限定さ
れるものではなく、１号機系用と２号機系用の話
中音発振器６，８を１つで共用し、かつスケルチ
リレー接点７とスケルチリレー接点９とを並列と
なし、変調入力切換リレー５の接点５ａ，５ｂに
加える発振器の出力は１つとしてもよい。 Although this embodiment has been described using mechanical relays as the modulation input switching relay 5, its contacts 5a and 5b, and the squelch relay contacts 7 and 9, the present invention is not limited to this. The present invention is not limited to the above, and may be similarly used with a semiconductor element that operates as a switch. Further, in this embodiment, although the case where separate oscillators are used as busy sound oscillators for the first machine system and the second machine system is used as an example, the present invention is not limited to this. The busy sound oscillators 6 and 8 for the No. 1 system and the No. 2 system are shared, and the squelch relay contact 7 and the squelch relay contact 9 are connected in parallel, and the contacts 5a and 5b of the modulation input switching relay 5 are used. The number of oscillator outputs added to the oscillator may be one.
以上説明したように、本発明によれば、非指定
側子局装置が発信してきたとき、中継局より自動
的に中継回線話中を知らせる信号が返送され、電
波が中継局まで届かないのか、中継回線話中であ
るかの区別ができ、円滑な運用を行うことができ
るので、実用上の効果は極めて大である。 As explained above, according to the present invention, when a non-designated slave station device makes a call, the relay station automatically sends back a signal indicating that the relay line is busy, and the radio wave does not reach the relay station. Since it is possible to distinguish whether a relay line is busy or not, and smooth operation can be performed, the practical effect is extremely large.
図は本発明の一実施例を示すブロツク系統図で
ある。
１……親局向無線装置、２……子局向１号機無
線装置、３……子局向２号機無線装置、４……受
信出力合成器、５……変調入力切換リレー、５
ａ，５ｂ……リレー接点、６，８……話中音発振
器、７，９……スケルチ接点。
The figure is a block system diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Radio device for master station, 2... No. 1 radio device for slave station, 3... No. 2 radio device for slave station, 4... Reception output combiner, 5... Modulation input switching relay, 5
a, 5b... Relay contact, 6, 8... Busy sound oscillator, 7, 9... Squelch contact.
Claims (1)
号機系および２号機系の変調入力切換スイツチと
１号機系および２号機系の受信出力合成器をそれ
ぞれ介して接続される子局向１号機および２号機
の無線装置とを備えた無線中継局において、前記
子局向１号機無線装置の変調入力に前記１号機系
および２号機系変調入力切換スイツチの接点を介
して１号機スケルチ接点で起動される発振器が接
続され、前記子局先２号機無線装置の変調入力に
前記１号機系および２号機系の変調入力切換スイ
ツチの接点を介して２号機スケルチ接点で起動さ
れる発振器が接続されていることを特徴とする無
線中継局の話中音送出方式。1 for the master station wireless device and 1 for this master station wireless device.
In a radio relay station equipped with modulation input changeover switches for the first and second unit systems and radio devices for slave stations No. 1 and No. 2 connected via reception output combiners for the No. 1 and No. 2 systems, respectively. , an oscillator activated by the squelch contact of the first unit is connected to the modulation input of the first unit wireless device for the slave station through the contacts of the first unit system and second unit system modulation input changeover switch, and the oscillator is activated by the first unit squelch contact. Busy tone transmission of a wireless relay station, characterized in that an oscillator activated by a squelch contact of the second unit is connected to the modulation input of the device via the contact of the modulation input changeover switch of the first unit system and the second unit system. method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16361579A JPS5686541A (en) | 1979-12-18 | 1979-12-18 | Busy-tone transmission system for radio relay station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16361579A JPS5686541A (en) | 1979-12-18 | 1979-12-18 | Busy-tone transmission system for radio relay station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5686541A JPS5686541A (en) | 1981-07-14 |
| JPS631784B2 true JPS631784B2 (en) | 1988-01-14 |
Family
ID=15777285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16361579A Granted JPS5686541A (en) | 1979-12-18 | 1979-12-18 | Busy-tone transmission system for radio relay station |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5686541A (en) |
-
1979
- 1979-12-18 JP JP16361579A patent/JPS5686541A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5686541A (en) | 1981-07-14 |
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