【発明の詳細な説明】〔発明の利用分野〕本発明は車両用情報伝送路に係わり、特に光ファイバー
を用いて構成した車両用情報伝送路に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a vehicle information transmission line, and particularly to a vehicle information transmission line constructed using optical fibers.
光ファイバーを用いた車両用情報伝送路として、例えば
、鉄道サイバネ論文誌１９８３年、Ｎｏ、７０１「鉄道
における光ファイバー伝達システム」およびＮｏ、７０
２ ｒ光ファイバ一式車両制御情報伝送システム」が知
られている。As a vehicle information transmission line using optical fiber, for example, Railway Cybernetics Journal 1983, No. 701 "Optical Fiber Transmission System in Railways" and No. 70
2R optical fiber complete vehicle control information transmission system is known.
第４図はその一例を示している。光ファイバーを車上の
情報伝送路の媒体とする場合、各車両９毎ニ設けられた
端末装置４と、光ファイバーケーブル１と、車両間の渡
り線となる光ジャンパーケーブル３が必要である。一般
に、光ファイバーケーブル１および光ジャンパーケーブ
ル３は強度的な理由から多芯のものが用いられ、車両間
の連結部や分岐部ｒ（は各芯線を接続して保持する接続
箱２が必要となる。従って、第４図に示すように車両毎
に端末装置４との接続のための接続箱２と、ｌ々り合う
車両との接続のためＫ ２１１１Ａの接続箱２との計３
個の接続箱が必要となっていた。FIG. 4 shows an example. When optical fiber is used as a medium for an on-vehicle information transmission path, a terminal device 4 provided in each vehicle 9, an optical fiber cable 1, and an optical jumper cable 3 serving as a crossover line between vehicles are required. Generally, multi-core optical fiber cables 1 and optical jumper cables 3 are used for reasons of strength, and connecting parts and branching parts between vehicles require a junction box 2 to connect and hold each core wire. Therefore, as shown in Fig. 4, a total of three connection boxes 2 are provided for each vehicle, including a connection box 2 for connection to the terminal device 4 and a connection box 2 for the K2111A for connection to the matching vehicle.
This required multiple junction boxes.
第５図は第４図の光ファイバーケーブルを線図で表わし
たもので、上述したようＫａ部およびｂ部に接続箱が必
要となる。FIG. 5 is a diagrammatic representation of the optical fiber cable shown in FIG. 4, and as described above, connection boxes are required at portions Ka and B.
一般に、接続部における損失は接続点１′肉所につき約
１ｄＢであるが、光ファイバーケーブル自体の伝送損失
はｌＫｍＫつき５ｄＢ以下である。Generally, the loss at the connection part is about 1 dB per connection point 1', but the transmission loss of the optical fiber cable itself is less than 5 dB per 1KmK.
従って、光ファイバーケーブル自体が長くなっても前祝
損失は増大しないが、接綽ｉ仙所θ）増加は大きな（１
↓失増加とプ「つてしまう。Therefore, even if the optical fiber cable itself becomes longer, the front loss does not increase, but the increase in the connection loss (θ) is large (1
↓The loss increases and it gets hot.
次に端末装置用と光ジャンパーケーブル用の接続箱２内
の構成について説明する。第６図は端末装置用の接続箱
２を示し、光ファイバーケーブル１の芯線５を単芯光コ
ネクタ６によって接紘：し、接続箱２内に納めたもので
あり、また第７図は光ジャンパーケーブル３用の接続箱
２を示し、光ファイバーケーブル１の芯線５を多芯光コ
ネクタ７゜８により接続している。通常単芯光コネクタ
６に代えて溶接されることもあるが、その場合伝送損失
は減少するものの、若干の損失は存在する。Next, the configuration inside the junction box 2 for terminal devices and optical jumper cables will be explained. Figure 6 shows a junction box 2 for a terminal device, in which the core wire 5 of the optical fiber cable 1 is connected by a single-core optical connector 6 and housed in the junction box 2, and Figure 7 shows an optical jumper. A junction box 2 for a cable 3 is shown, in which core wires 5 of an optical fiber cable 1 are connected by a multi-core optical connector 7.8. Normally, welding may be used instead of the single-core optical connector 6, but in that case, although the transmission loss is reduced, there is still some loss.
上述したように従来の車両用情報伝送路は、車両当り３
個の接続箱２が必要とされていたため、接続部自体によ
って生ずる伝送損失が大きくなっており、その低減が望
まれていた。As mentioned above, the conventional vehicle information transmission path has three
Since multiple connection boxes 2 are required, the transmission loss caused by the connection itself is large, and it has been desired to reduce the transmission loss.
本発明の目的は、接続箇所を減少して伝送損失を低減し
た車両用伝送路を提供するにある。An object of the present invention is to provide a transmission line for a vehicle that reduces transmission loss by reducing the number of connection points.
本発明は、従来端末装置の近傍に接続箱を設けて接続を
行なっていたのに対し、車両間の光ジャンパーケーブル
のための接続箱内で、端末装置への接続のための分岐を
行なうことによって、車両当り１個の接続箱を減少して
伝送損失を低減したことを特徴とする。The present invention provides a method of branching out connections to terminal devices within a junction box for optical jumper cables between vehicles, whereas conventional connections were made by providing a junction box near a terminal device. The present invention is characterized in that the number of connection boxes per vehicle is reduced by one, thereby reducing transmission loss.
以下本発明の実施例を図匍匠よって説明する。Embodiments of the present invention will be described below with reference to illustrations.
第１図は車両の１１（ム面図でありＳ各車両は同一構成
であるので、今、車両９ａＫついてのみ説明する。車両
９ａの下部には端末装置４ａが配置され、また隣り合う
車両側に接続箱２ａ、２ｂが配置されている。この接続
箱２ａ、２ｂ間は元ファイバーケーブル１ｂによって接
続され、また隣り合う車両の接続箱２との間は光ジャン
パーケーブル３ａ、３ｂ［よって接続されている。端末
装置４ａは、接続箱２ａ内から分岐した光ファイバーケ
ーブル１．ａＫよって接続され、このようにして情報伝
送路が構成されている。Since FIG. 1 is a side view of the vehicle 11 (S) and each vehicle has the same configuration, only the vehicle 9aK will be explained now. A terminal device 4a is arranged at the bottom of the vehicle 9a, and Junction boxes 2a and 2b are arranged in the junction boxes 2a and 2b.The junction boxes 2a and 2b are connected by an original fiber cable 1b, and the junction boxes 2 of adjacent vehicles are connected by optical jumper cables 3a and 3b [thus, they are not connected. The terminal device 4a is connected by an optical fiber cable 1.aK branched from inside the connection box 2a, thus configuring an information transmission path.
従来の構成との差は、接続箱２ ａ 、 ２１）間が直
接光ファイバーケーブル１ｂＫよって接続されているこ
と、また端末装置１’１ｌｔ４ａが接続箱２ａで分岐接
続されていることであり、従って、接続箱は車両当り１
個少なくなっている。The difference from the conventional configuration is that the connection boxes 2a and 21) are directly connected by the optical fiber cable 1bK, and that the terminal device 1'1lt4a is branched and connected by the connection box 2a. 1 connection box per vehicle
There are fewer of them.
次に、接続箱２ａについて第２図を用いて１ｉ５２明す
る。光ファイバーケーブルｌａ、ｌｂの所定の芯線間は
、接続箱２ａ内で単芯コネクター６８によって接続され
、また光ファイバーケーブルｌａ。Next, the connection box 2a will be explained in detail using FIG. Predetermined core wires of the optical fiber cables la and lb are connected by a single-core connector 68 in the junction box 2a, and the optical fiber cable la.
１ｉ）の残りの芯線は、接続箱２ａＫ固定した栓受７ａ
Ｋ接続され、光ジャンパーケーブル３ ａ Ｏ） 一端
に取り伺けた接栓８ａと栓受７ａとによって多芯光コネ
クタを構成している。The remaining core wire of 1i) is connected to the plug holder 7a fixed to the junction box 2aK.
The optical jumper cable 3a is connected to the optical jumper cable 3a, and the plug 8a and the plug holder 7a at one end constitute a multi-core optical connector.
光ファイバーケーブルｌｂは途中に接続部がなく、両端
を接続部に直接接続しているので、光ファイバーケーブ
ル１ｂの伝送損失は従来よりも車両当り約１ｄＢ少な（
することができる。光ファイバーケーブル１ａは従来よ
り多少長くなるが、前述したように光ファイバーケーブ
ル自体の伝送損失はＩ Ｋ、 ｍ Ｋつき５ｄ１３以下
でル）す、Ｉ÷とんと無視できる。Since the optical fiber cable lb has no connection part in the middle and both ends are connected directly to the connection part, the transmission loss of the optical fiber cable 1b is about 1 dB less per vehicle than the conventional one (
can do. The optical fiber cable 1a is somewhat longer than the conventional one, but as mentioned above, the transmission loss of the optical fiber cable itself is less than 5d13 (I/m), which can be ignored.
第３図は接続箱２ａの異なる構成例を示す。FIG. 3 shows an example of a different configuration of the junction box 2a.
光ジャンパーグープル３ａは、連結された車両を切り離
すときに情報伝送路も分離できるようにするものである
から、少なくとも一端を分離可能な構造とすれば良い。Since the optical jumper goople 3a allows the information transmission path to be separated when the connected vehicles are separated, at least one end may have a separable structure.
そこで１本実施例では光ジャンパーケーブル３ａの一端
を接続箱２．ａＫ固定し、他端に接栓８ａを設け、各光
ファイバーケーブルの芯線間を単芯光コネクタ６ａで接
続している。一般に、多芯光コネクタによる接続部の伝
送損失は、溶着や単芯光コネクタに比べて大きいので、
この実施例は第２図の実施例よりも伝送損失を低減する
ことができる。Therefore, in this embodiment, one end of the optical jumper cable 3a is connected to the connection box 2. AK is fixed, a plug 8a is provided at the other end, and the core wires of each optical fiber cable are connected by a single-core optical connector 6a. In general, the transmission loss at the connection part of a multi-core optical connector is greater than that of a welded or single-core optical connector.
This embodiment can reduce transmission loss more than the embodiment shown in FIG.
上記実施例では、接続箱２ａと端末装置４ａとの接続に
光ファイバーケーブルを用いたが、光ファイバークープ
ルや光ファイバーコード等の光ファイバー伝送手段を用
いることができる。In the above embodiment, an optical fiber cable is used to connect the junction box 2a and the terminal device 4a, but an optical fiber transmission means such as an optical fiber couple or an optical fiber cord can be used.
以上説明したように本発明は、隣り合う車両間に設けら
れる光ジャンパーケーブルとの接続部となる接続箱を車
両の両端部に設け、端末装置（すいずれか一方の接続部
か「）分岐した光ファイバー伝送手段によって接続した
ため、従来よりも車両当りの接続箱を１つ少ｉｔ ＜
して伝送損失を低減した□車両用情報伝送路が得られる
。As explained above, the present invention provides connection boxes at both ends of a vehicle that serve as connections with optical jumper cables provided between adjacent vehicles, and connects terminal devices (either one of the connection points or ")" to a branched terminal device. Because the connection is made using optical fiber transmission means, there is one less connection box per vehicle than in the past.
□ A vehicle information transmission line with reduced transmission loss is obtained.
第１図は本発明の一実施例による輌報伝送路を示す側面
図、第２図は第１図の要部拡大詳細図、第３図は本発明
の他の笑施例による情報伝送路の要部拡大詳細図、第４
図は従来の情報伝送路を示す側面図、第５図は第４図の
線路図、第６図および第７図は第４図のそれぞれ異なる
例による要部拡大詳細図である。１ ａ 、 １１）・・白・・光ファイバーケーブル、
２ａ。２ｂ・・・・・・接続箱、３ａ 、３ｂ・・・・・・光
ジャンパーケーブル、４ａ・・・・・・端末装置、９ａ
・・・・・・車両。FIG. 1 is a side view showing an alarm transmission line according to one embodiment of the present invention, FIG. 2 is an enlarged detailed view of the main part of FIG. 1, and FIG. 3 is an information transmission line according to another embodiment of the present invention. Enlarged detailed drawing of main parts, No. 4
5 is a side view showing a conventional information transmission line, FIG. 5 is a line diagram of FIG. 4, and FIGS. 6 and 7 are enlarged detailed views of main parts of FIG. 4 in different examples. 1 a, 11)... White... Optical fiber cable,
2a. 2b... Connection box, 3a, 3b... Optical jumper cable, 4a... Terminal device, 9a
······vehicle.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60060789AJPS61220536A (en) | 1985-03-27 | 1985-03-27 | Information transmission line for car |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60060789AJPS61220536A (en) | 1985-03-27 | 1985-03-27 | Information transmission line for car |
| Publication Number | Publication Date |
|---|---|
| JPS61220536Atrue JPS61220536A (en) | 1986-09-30 |
| JPH046137B2 JPH046137B2 (en) | 1992-02-04 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60060789AGrantedJPS61220536A (en) | 1985-03-27 | 1985-03-27 | Information transmission line for car |
| Country | Link |
|---|---|
| JP (1) | JPS61220536A (en) |
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| Publication number | Publication date |
|---|---|
| JPH046137B2 (en) | 1992-02-04 |
| Publication | Publication Date | Title |
|---|---|---|
| JPS61220536A (en) | Information transmission line for car | |
| JP2830032B2 (en) | Optical fiber cable branching method and optical fiber cable | |
| JPS63201611A (en) | Flat optical fiber cable for branching | |
| JPS60165906U (en) | Jumper wire for optical composite vehicles | |
| JPS58117508A (en) | Optical fiber | |
| JPS60153235A (en) | Building management system | |
| JP3662303B2 (en) | Branch wiring method for optical fiber cable | |
| JPS60166536A (en) | Optical fiber composite overhead trolley line | |
| JPH04269703A (en) | Optical pull-down connecting box | |
| JPS59137658U (en) | Fiber optic vehicle information transmission device | |
| JPS6290043A (en) | Optical submarine repeater | |
| JPH03143209A (en) | Method of connecting multiconductor cable for multiple-signal transmission | |
| JPS59226422A (en) | Method of forming optical conductor composite transmission line | |
| JPH05258620A (en) | Signal cable | |
| JPS59138818U (en) | Connection part of multi-core optical fiber cable | |
| JPS616608A (en) | Formation of optical fiber composite overhead earth-wire | |
| JPS5947983U (en) | Inter-device connection cable | |
| JPS5979810U (en) | Branchable optical cable | |
| JPH01164646A (en) | Wiring structure for mounted electric outfit unit | |
| JPS632178B2 (en) | ||
| JPS59157348U (en) | Vehicle optical transmission equipment | |
| JPH04274942A (en) | Electric wiring structure for vehicle | |
| JPS59137922A (en) | Switching connector and optical cable line using switching connector | |
| JPS6220202A (en) | Optical fiber composite overhead ground wire | |
| JPS6070812U (en) | undercarpet fiber optic cable |
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |