JP4210367B2

JP4210367B2 - Wireless broadcasting equipment

Info

Publication number: JP4210367B2
Application number: JP20884498A
Authority: JP
Inventors: 光宏木村
Original assignee: 日本電音株式会社
Priority date: 1998-07-24
Filing date: 1998-07-24
Publication date: 2009-01-14
Anticipated expiration: 2018-07-24
Also published as: JP2000038131A

Description

【０００１】
【発明の属する技術分野】
本発明は、複数の鉄道車輌が連結された列車内の任意の位置から車内放送を効率的に行うことができるワイヤレス放送装置、及びそれを使用する車内放送のための方法に関するものである。
【０００２】
【従来の技術】
従来、複数の鉄道車輌が連結された列車内で車内放送を行う場合、各車輌毎にワイヤレス受信機と受信アンテナを設置したワイヤレス放送装置が使用されている。
【０００３】
【発明が解決しようとする課題】
しかしながら、上述した従来のワイヤレス放送装置では、下記のような問題がある。
（ｉ）各車輌毎に設置した、ワイヤレス受信機、受信アンテナは、ワイヤレスマイクから発せられた電波がワイヤレスマイクの移動に伴って受信できるものとできないものに変化するため放送音量が変化しやすい。
（ii）ワイヤレスマイクシステムの使用周波数を変更するためには、ワイヤレスマイクの周波数設定スイッチの他に、各車輌毎に設置したすべてのワイヤレス受信機の周波数設定スイッチを調節する必要がある。
(iii) 各車輌毎に設置したすべてのワイヤレス受信機は、ワイヤレスマイクを使用しないときも常に、受信出力可能な状態にあり、混信障害を受ける可能性がある。
【０００４】
本発明は、これらの従来技術の問題を解消するために創案されたものであり、その目的は複数の鉄道車輌が連結された列車内の任意の位置から車内放送を音量変化なく効率的に行うことができるワイヤレス放送装置、及びそれを使用する車内放送のための方法を提供することにある。
【０００５】
【課題を解決するための手段】
本発明は、列車の各車輌毎に、受信周波数設定及び受信出力を遠隔制御できるワイヤレス受信機を設置し、その列車の各乗務員室に、受信周波数制御機能及び受信出力制御機能を備えたワイヤレス制御装置を設置し、その列車のすべてのワイヤレス受信機とワイヤレス制御装置をワイヤレス制御信号線で接続することを特徴とするワイヤレス放送装置である。
【０００６】
本発明のワイヤレス放送装置の好ましい態様では、列車の各車輌毎に、スピーカー、出力増幅器制御信号線及び音声信号線に接続した出力増幅器を設置し、ワイヤレス受信機を受信アンテナ及び音声信号線に接続し、ワイヤレス制御装置を出力増幅器制御信号線に接続する。
また、本発明のワイヤレス放送装置の好ましい態様では、ワイヤレス制御装置がワイヤレス受信機の受信周波数設定スイッチ、及びワイヤレスマイクの常置場所とワイヤレスマイクの充電機能を兼ねるスロットを有し、スロットからワイヤレスマイクを取り出すことによって、自動的に受信周波数制御信号および受信出力制御信号をワイヤレス制御信号線に送出する。
【０００７】
また、本発明は、上記のワイヤレス放送装置を使用して、複数の鉄道車輌が連結された列車内の任意の位置からワイヤレスマイクによる車内放送を行うための方法において、ワイヤレス制御装置から、受信周波数制御信号および受信出力制御信号をワイヤレス制御信号線に送出することにより、すべての車輌のワイヤレス受信機の受信周波数を、ワイヤレスマイクと一致した希望の周波数に設定し、受信可能な状態にするとともに、いずれかのワイヤレス受信機が受信状態となったとき、そのワイヤレス受信機が、ワイヤレス制御信号線に送られている受信出力制御信号を停止させることにより、複数のワイヤレス受信機から音声信号が出力されて、放送音量が変化することを防止するようにしたことを特徴とする方法である。
【０００８】
【実施の形態】
本発明のワイヤレス放送装置の一例を、図面を参照して以下説明するが、本発明はこれに限定されるものではない。
【０００９】
図１は本発明のワイヤレス放送装置の構成図である。各車輌毎に設置する複数のワイヤレス受信機１〜４は各々、アンテナ入力端子に受信アンテナ５ａ〜８ａ、５ｂ〜８ｂを接続し、受信出力端子に音声信号線９を接続し、制御信号端子にワイヤレス制御信号線１０を接続している。各車輌毎に設置する複数の出力増幅器１１〜１４は各々、出力端子にスピーカ１５〜１８を接続し、入力端子に音声信号線９を接続している。各乗務員室に設置する複数のワイヤレス制御装置１９〜２２は各々、周波数設定スイッチ２３ａ〜２６ａ、２３ｂ〜２６ｂ、及びワイヤレスマイク２７〜３０の常置場所と充電機能を兼ねるワイヤレスマイク充電スロットを有し、ワイヤレス制御端子にワイヤレス制御信号線１０を接続し、出力増幅器制御端子に出力増幅器制御信号線３１を接続している。
【００１０】
まず、４輌編成の列車におけるワイヤレス放送装置の動作例を説明する。
ワイヤレス制御装置１９〜２２のワイヤレスマイク充電スロットに挿入されたワイヤレスマイク２７〜３０は、常時充電され、使用可能な状態になっていて、ワイヤレスマイク２７の送信周波数とワイヤレス制御装置１９の周波数設定スイッチを同じ、例えば１１チャンネルに設定、ワイヤレスマイク２８の送信周波数とワイヤレス制御装置２０の周波数設定スイッチを同じ、例えば１２チャンネルに設定、ワイヤレスマイク２９の送信周波数とワイヤレス制御装置２１の周波数設定スイッチを同じ、例えば１３チャンネルに設定、ワイヤレスマイク３０の送信周波数とワイヤレス制御装置２２の周波数設定スイッチを同じ、例えば１４チャンネルに設定する。
【００１１】
送信周波数が１１チャンネルに設定されたワイヤレスマイク２７を用いて車内放送を行うために、ワイヤレス制御装置１９の充電スロットからこれを取出すと、ワイヤレス制御装置１９からあらかじめ周波数設定スイッチ２３ａおよび２３ｂで１１チャンネルに設定された、受信周波数制御のシリアル信号がワイヤレス制御信号線１０に送出され、これに接続されたすべてのワイヤレス受信機１〜４の受信周波数は１１チャンネルに設定されて受信可能な状態になる。続いて同様に、ワイヤレス制御装置１９から受信出力制御の直流電圧信号がワイヤレス制御信号線１０に送出開始され、これに接続されたすべてのワイヤレス受信機１〜４は受信出力可能な状態を保持する。次に、ワイヤレスマイク２７の送話スイッチが押されて電波が発射され、これをワイヤレス受信機１が受信すると、まず、ワイヤレス受信機１は、ワイヤレス制御装置１９からワイヤレス制御信号線１０に送出されている受信出力制御の直流電圧信号をショートしてから、受信出力を音声信号線９に出力することにより、このショートを検出したワイヤレス制御装置１９は、出力増幅器制御端子から出力増幅器起動信号を出力増幅器制御信号線３１に送出して、各車輌毎に設置されたすべての出力増幅器１１〜１４を車内放送可能な動作状態にする一方で、他の受信可能な状態にあるワイヤレス受信機２〜４は、ワイヤレス制御信号線１０の受信出力制御の直流電圧信号が停止したものと判断するため、ワイヤレスマイク２７の移動に伴ってこれらのワイヤレス受信機のいずれか、例えばワイヤレス受信機２が受信状態になっても受信出力を音声信号線９に出力しないので、車内放送は音量の変化無く行える。また、この時ワイヤレス受信機１が受信できない状態になると、すでに受信状態になっている受信機、前述説明例ではワイヤレス受信機２が、それまでのワイヤレス受信機１に代わって同じ動作をするため、車内放送が途切れ無く継続できる。
【００１２】
以上の動作説明は、ワイヤレスマイク２８を用いる場合には使用周波数が１２チャンネルに、ワイヤレスマイク２９を用いる場合には使用周波数が１３チャンネルに、ワイヤレスマイク３０を用いる場合には使用周波数が１４チャンネルになることを除けば、同じである。
【００１３】
次に図１の４輌編成の列車が２両ずつに切り離された場合の装置の動作例について説明する。
４輌編成列車が２輌編成ずつの２列車に切り離されると、音声信号線９、ワイヤレス制御信号線１０、出力増幅器制御信号線３１も２両編成ずつに分割され、すべての制御は２両編成ずつに独立する。よって、先の説明にあるように、いずれのワイヤレスマイクがワイヤレス制御装置のスロットから取り出されても、図１のような周波数設定例のように、ワイヤレスマイク２７、２８およびワイヤレス制御装置１９、２０と、ワイヤレスマイク２９、３０およびワイヤレス制御装置２１、２２の周波数設定が異なっていれば、これらの列車同士が接近していても、混信障害を発生することは無い。
【００１４】
【発明の効果】
本発明のワイヤレス放送装置は上述のように構成されているので以下のような効果を奏する。
（１）複数の鉄道車輌が連結された列車内の任意の位置から、ワイヤレスマイクによる車内放送を音量変化なく効率的に行うことができる。
（２）列車が２編成以上に切り離され、接近状態にあっても、相互に混信の無い車内放送を行うことができる。
（３）ワイヤレス受信機と受信アンテナの接続は各車輌の連結部を跨らないため、連結車輌間の同軸ケーブル接続が不要である。
【図面の簡単な説明】
【図１】本発明のワイヤレス放送装置の構成図である。
【符号の説明】
１〜４ワイヤレス受信機
５ａ〜８ａ受信アンテナ
５ｂ〜８ｂ受信アンテナ
９音声信号線
１０ワイヤレス制御信号線
１１〜１４出力増幅器
１５〜１８スピーカ
１９〜２２ワイヤレス制御装置
２３ａ〜２６ａ周波数設定スイッチ
２３ｂ〜２６ｂ周波数設定スイッチ
２７〜３０ワイヤレスマイク
３１出力増幅器制御信号線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wireless broadcasting apparatus capable of efficiently performing in-vehicle broadcasting from an arbitrary position within a train in which a plurality of railway vehicles are connected, and a method for in-vehicle broadcasting using the wireless broadcasting device.
[0002]
[Prior art]
Conventionally, when in-vehicle broadcasting is performed in a train in which a plurality of railway vehicles are connected, a wireless broadcasting device in which a wireless receiver and a receiving antenna are installed for each vehicle is used.
[0003]
[Problems to be solved by the invention]
However, the above-described conventional wireless broadcasting apparatus has the following problems.
(I) The broadcast volume of the wireless receiver and the receiving antenna installed for each vehicle is likely to change because radio waves emitted from the wireless microphone change depending on the movement of the wireless microphone.
(Ii) In order to change the operating frequency of the wireless microphone system, it is necessary to adjust the frequency setting switches of all wireless receivers installed for each vehicle in addition to the frequency setting switch of the wireless microphone.
(iii) All wireless receivers installed in each vehicle are always ready to receive and output even when a wireless microphone is not used, which may cause interference.
[0004]
The present invention was devised to solve these problems of the prior art, and its purpose is to efficiently perform in-car broadcast from any position in a train to which a plurality of railway vehicles are connected without changing the volume. It is an object of the present invention to provide a wireless broadcasting apparatus capable of performing the above-described and a method for in-vehicle broadcasting using the wireless broadcasting apparatus.
[0005]
[Means for Solving the Problems]
The present invention installs a wireless receiver capable of remotely controlling reception frequency setting and reception output for each vehicle of a train, and wireless control provided with a reception frequency control function and a reception output control function in each crew room of the train A wireless broadcast apparatus is characterized in that the apparatus is installed and all wireless receivers of the train and the wireless control apparatus are connected by a wireless control signal line.
[0006]
In a preferred aspect of the wireless broadcasting device of the present invention, an output amplifier connected to a speaker, an output amplifier control signal line, and an audio signal line is installed for each vehicle of the train, and the wireless receiver is connected to the receiving antenna and the audio signal line. The wireless control device is connected to the output amplifier control signal line.
In a preferred aspect of the wireless broadcasting device of the present invention, the wireless control device has a reception frequency setting switch of the wireless receiver, and a slot that serves both as a wireless microphone permanent place and a wireless microphone charging function. By taking out, the reception frequency control signal and the reception output control signal are automatically transmitted to the wireless control signal line.
[0007]
Further, the present invention provides a method for performing in-vehicle broadcasting using a wireless microphone from an arbitrary position in a train to which a plurality of railway vehicles are connected using the above wireless broadcasting device. By sending the control signal and the reception output control signal to the wireless control signal line, the reception frequency of the wireless receiver of all the vehicles is set to a desired frequency that matches the wireless microphone, and is set in a receivable state. When one of the wireless receivers enters the reception state, the wireless receiver stops the reception output control signal sent to the wireless control signal line, so that audio signals are output from multiple wireless receivers. Thus, the broadcast volume is prevented from changing.
[0008]
Embodiment
An example of the wireless broadcasting apparatus of the present invention will be described below with reference to the drawings, but the present invention is not limited to this.
[0009]
FIG. 1 is a configuration diagram of a wireless broadcasting apparatus of the present invention. Each of the plurality of wireless receivers 1 to 4 installed for each vehicle has the antenna input terminal connected to the reception antennas 5a to 8a and 5b to 8b, the reception output terminal to the audio signal line 9, and the control signal terminal to A wireless control signal line 10 is connected. Each of the plurality of output amplifiers 11 to 14 installed for each vehicle has speakers 15 to 18 connected to output terminals and an audio signal line 9 connected to input terminals. Each of the plurality of wireless control devices 19 to 22 installed in each crew room has a frequency setting switch 23a to 26a, 23b to 26b, and a wireless microphone charging slot that functions as a permanent place and a charging function for the wireless microphones 27 to 30, The wireless control signal line 10 is connected to the wireless control terminal, and the output amplifier control signal line 31 is connected to the output amplifier control terminal.
[0010]
First, an operation example of the wireless broadcasting device in a four-car train will be described.
The wireless microphones 27 to 30 inserted into the wireless microphone charging slots of the wireless control devices 19 to 22 are always charged and usable, and the transmission frequency of the wireless microphone 27 and the frequency setting switch of the wireless control device 19 are set. Are set to the same, for example, 11 channels, the transmission frequency of the wireless microphone 28 and the frequency setting switch of the wireless control device 20 are the same, for example, set to 12 channels, the transmission frequency of the wireless microphone 29 and the frequency setting switch of the wireless control device 21 are the same. For example, the channel 13 is set, and the transmission frequency of the wireless microphone 30 and the frequency setting switch of the wireless control device 22 are set to the same, for example, 14 channels.
[0011]
In order to perform in-car broadcast using the wireless microphone 27 whose transmission frequency is set to 11 channels, when this is taken out from the charging slot of the wireless control device 19, 11 channels are previously set from the wireless control device 19 by the frequency setting switches 23a and 23b. The serial signal for receiving frequency control set to 1 is sent to the wireless control signal line 10, and the receiving frequencies of all the wireless receivers 1 to 4 connected thereto are set to 11 channels so that they can be received. . Subsequently, similarly, a direct-current voltage signal for reception output control is started to be sent from the wireless control device 19 to the wireless control signal line 10, and all the wireless receivers 1 to 4 connected thereto hold a state in which reception output is possible. . Next, when the transmission switch of the wireless microphone 27 is pressed to emit radio waves and the wireless receiver 1 receives the radio waves, the wireless receiver 1 is first sent from the wireless control device 19 to the wireless control signal line 10. The wireless control device 19 that detects this short circuit outputs an output amplifier starting signal from the output amplifier control terminal by shorting the DC voltage signal of the received output control and then outputting the received output to the audio signal line 9. The power is sent to the amplifier control signal line 31 so that all the output amplifiers 11 to 14 installed in each vehicle are in an in-car broadcast operation state, while the other wireless receivers 2 to 4 are in a receivable state. Determines that the DC voltage signal of the reception output control of the wireless control signal line 10 has stopped, and accordingly, as the wireless microphone 27 moves, One of these wireless receiver, for example, since the wireless receiver 2 does not output even receive outputted as the receiving state to the audio signal line 9, Announcement is performed without change of volume. In addition, if the wireless receiver 1 is not ready at this time, the receiver already in the receiving state, in the above-described example, the wireless receiver 2 performs the same operation in place of the wireless receiver 1 used so far. In-car broadcast can continue without interruption.
[0012]
In the above description of the operation, when the wireless microphone 28 is used, the use frequency is 12 channels, when the wireless microphone 29 is used, the use frequency is 13 channels, and when the wireless microphone 30 is used, the use frequency is 14 channels. It is the same except that
[0013]
Next, an operation example of the apparatus when the four-car train shown in FIG. 1 is separated into two cars will be described.
When a four-car train is separated into two trains each consisting of two cars, the audio signal line 9, the wireless control signal line 10, and the output amplifier control signal line 31 are also divided into two-car trains. Be independent of each other. Therefore, as described above, regardless of which wireless microphone is taken out from the slot of the wireless control device, the wireless microphones 27 and 28 and the wireless control devices 19 and 20 are used as in the frequency setting example shown in FIG. If the frequency settings of the wireless microphones 29 and 30 and the wireless control devices 21 and 22 are different, even if these trains are close to each other, no interference failure occurs.
[0014]
【The invention's effect】
Since the wireless broadcasting apparatus of the present invention is configured as described above, the following effects can be obtained.
(1) In-vehicle broadcasting using a wireless microphone can be efficiently performed from any position in a train to which a plurality of railway vehicles are connected without change in volume.
(2) Even if a train is separated into two or more trains and is in an approaching state, in-car broadcast without mutual interference can be performed.
(3) Since the connection between the wireless receiver and the receiving antenna does not straddle the connecting portion of each vehicle, a coaxial cable connection between the connected vehicles is not necessary.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a wireless broadcasting device of the present invention.
[Explanation of symbols]
1 to 4 Wireless receivers 5a to 8a Reception antennas 5b to 8b Reception antenna 9 Audio signal line 10 Wireless control signal lines 11 to 14 Output amplifier 15 to 18 Speakers 19 to 22 Wireless control devices 23a to 26a Frequency setting switches 23b to 26b Frequency Setting switches 27-30 Wireless microphone 31 Output amplifier control signal line

Claims

A wireless receiver that can remotely control the reception frequency setting and reception output is installed for each vehicle in the train, and a wireless control device that has a reception frequency control function and a reception output control function is installed in each crew room of the train. A wireless broadcasting device characterized in that all wireless receivers of the train and a wireless control device are connected by a wireless control signal line.

For each vehicle in the train, an output amplifier connected to the speaker, the output amplifier control signal line and the audio signal line is installed, the wireless receiver is connected to the reception antenna and the audio signal line, and the wireless control device is connected to the output amplifier control signal line. The wireless broadcasting device according to claim 1, wherein the wireless broadcasting device is connected to the wireless broadcasting device.

3. The wireless broadcasting device according to claim 1, wherein the wireless control device has a reception frequency setting switch of the wireless receiver, and a slot which functions as a wireless microphone permanent place and a wireless microphone charging function.

4. The wireless broadcasting apparatus according to claim 3, wherein a reception frequency control signal and a reception output control signal are automatically transmitted to the wireless control signal line by taking out the wireless microphone from the slot.

A method for performing in-vehicle broadcasting with a wireless microphone from an arbitrary position in a train in which a plurality of railway vehicles are connected using the wireless broadcasting device according to any one of claims 1 to 4, By sending the reception frequency control signal and the reception output control signal to the wireless control signal line, the reception frequency of the wireless receiver of all vehicles is set to a desired frequency that matches the wireless microphone and is set in a receivable state. At the same time, when one of the wireless receivers is in the receiving state, the wireless receiver stops the reception output control signal sent to the wireless control signal line, so that the audio signals are received from the plurality of wireless receivers. A method of preventing a change in broadcast volume when output.