JPS5823021B2 - approach line equipment - Google Patents
approach line equipmentInfo
- Publication number
- JPS5823021B2 JPS5823021B2 JP4226376A JP4226376A JPS5823021B2 JP S5823021 B2 JPS5823021 B2 JP S5823021B2 JP 4226376 A JP4226376 A JP 4226376A JP 4226376 A JP4226376 A JP 4226376A JP S5823021 B2 JPS5823021 B2 JP S5823021B2
- Authority
- JP
- Japan
- Prior art keywords
- station
- signal
- ground
- switching
- line
- 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
- 238000010586 diagram Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- LKKMLIBUAXYLOY-UHFFFAOYSA-N 3-Amino-1-methyl-5H-pyrido[4,3-b]indole Chemical compound N1C2=CC=CC=C2C2=C1C=C(N)N=C2C LKKMLIBUAXYLOY-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/16—Continuous control along the route
- B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Mobile Radio Communication Systems (AREA)
Description
【発明の詳細な説明】
この発明は列車無線等のアプローチ回線に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to approach lines for train radio and the like.
列車無線では、一本の線路上を高速で移動する列車層（
移動局）と通信センタ局（地上基地局）間の通信回線を
維持監視すなわちその回線状態を知るため、線路にそっ
て多数の地上局を配列すると共にこれら地上局を中継線
で接続し、これら地上局により列車層より送信される信
号を受信し、その受信状態に応じて中継あるいは受信信
号の切替えを行なってそれを通信センタ局に伝送するア
プローチ回線が必要となる。In train radio, the train layer (
In order to maintain and monitor the communication line between the mobile station (mobile station) and the communication center station (ground base station), that is, to know the line status, a large number of ground stations are arranged along the railway line, and these ground stations are connected by relay lines. An approach line is required for receiving signals transmitted from the train layer by the ground station, relaying or switching the received signal depending on the reception status, and transmitting the signal to the communication center station.
この発明は、以上の要求をみたしかつ構成の単純なアプ
ローチ回線を提供するものである。The present invention satisfies the above requirements and provides an approach line with a simple configuration.
以下、この発明を図面に基すいて説明する。The present invention will be explained below based on the drawings.
第１図は、この発明の一実施例を示す構成図である。FIG. 1 is a block diagram showing an embodiment of the present invention.
第１図において、１は線路、２は列車局設備でありアン
テナ２１を備えている。In FIG. 1, 1 is a railway track, and 2 is train station equipment, which is equipped with an antenna 21.
３は地上設備で、地上局設備３１、各地上局および通信
センター局設備３３相互間をつなぐ中継線３２より構成
している。Reference numeral 3 denotes ground equipment, which is composed of ground station equipment 31 and trunk lines 32 that connect each ground station and communication center station equipment 33.
地上局設備３１は、地上局の受信アンテナ３１１、地上
局の受信機３１２、中継線３２、からの信号と前記受信
機３１２からの信号を切替える切替回路３１３、中継線
３２に重畳された制御用の帯域外信号を抽出するＨＰＦ
３１５および信号検出回路３１４、前記制御用の帯域
外信号を阻止し所要音声信号のみを通過させるＬＰＦ３
１６、一方向性を有し所要の増幅度を有するＡＭＰ３１
７、制御用の帯域外信号を中継線に送出する信号発信器
３１８およびスイッチ回路３１９、より構成している。The ground station equipment 31 includes a receiving antenna 311 of the ground station, a receiver 312 of the ground station, a switching circuit 313 for switching signals from the trunk line 32 and a signal from the receiver 312, and a control circuit superimposed on the trunk line 32. HPF to extract out-of-band signals of
315 and a signal detection circuit 314, an LPF 3 that blocks the control out-of-band signal and passes only the required audio signal.
16. AMP31 with unidirectionality and required amplification degree
7. Consists of a signal transmitter 318 and a switch circuit 319 that send out out-of-band signals for control to the trunk line.
なお、各地上局設備は、以上の構成のものが線路に沿っ
て所要の間隔をおいて継続して配列されており、列車層
２から送信された信号は地上局３１で受信され、その受
信信号（音声信号）はその信号レベルに応じて後方に配
置された各地上局３１により順次中継あるいは切替出力
され、各中継線３２を介して通信センタ局３３に伝送さ
れる。In addition, each ground station equipment has the above configuration and is continuously arranged at required intervals along the track, and the signals transmitted from the train layer 2 are received by the ground station 31, and the reception The signal (audio signal) is sequentially relayed or switched output by each ground station 31 arranged in the rear according to the signal level, and is transmitted to the communication center station 33 via each trunk line 32.
これにより通信センタ局３３は、列車層２間の通信回線
状態の良否を知ることができる。This allows the communication center station 33 to know whether the condition of the communication line between the train layers 2 is good or bad.
なお、線路末端すなわち通信センタ局３３から見て最遠
方の地上局３１は、ＨＰＦ３１５、信号検出回路３１４
およびＬＰＦ３１６が除去されており、ＬＰＦ３１６の
出力側が接続されるべき切替回路３１３の接点には、そ
のＬＰＦ出力インピーダンスに等しい抵抗が終端接続さ
れている。Note that the farthest ground station 31 seen from the end of the line, that is, the communication center station 33, has an HPF 315 and a signal detection circuit 314.
The LPF 316 is removed, and the contact of the switching circuit 313 to which the output side of the LPF 316 is to be connected is terminated with a resistor equal to the LPF output impedance.
したがって、この末端地上局は所定レベル（後述するＰ
あるいはＱレベル）以上の受信信号が得られた場合のみ
、その受信信号に信号発信器３１８の帯域外信号を重畳
して中継線３２に出力する。Therefore, this terminal ground station is at a predetermined level (P
Only when a received signal of a level higher than Q level is obtained, an out-of-band signal from the signal transmitter 318 is superimposed on the received signal and output to the trunk line 32.
次に動作を説明する。Next, the operation will be explained.
各地上局設備３１では、列車局設備２から地上局の受信
機３１２への受信入力に対応して次の各状態を設けてお
く、すなわち、第２図に示すように受信電界がｅ１以下
のときを状態・０・・、ｅ１〜ｅ２のときを状態・ｐ
？１．０２以上のときを状態・Ｑ−とする。In each ground station equipment 31, the following states are provided corresponding to the reception input from the train station equipment 2 to the receiver 312 of the ground station. That is, as shown in FIG. When is state 0..., when e1 to e2 is state p
? When the value is 1.02 or more, the state is Q-.
そして、隣り合う地−Ｌ局の状態が−Ｏ２ν・ｐ Ｉｔ
・Ｑｔｔであるときの切替回路３１３による中継線の切
替接続の仕方はアプローチ回線に要求される機能から第
３図に示すように切替えるものとする。Then, the state of the adjacent ground -L station is -O2ν・p It
・The method of switching and connecting the trunk line by the switching circuit 313 in the case of Qtt shall be as shown in FIG. 3 based on the function required for the approach line.
この切替接続は、自局が９１ Ｑ ＋１状態にある場合
および自局は・Ｐ・・状態で決してよい受信状態にはな
いが先の局（通信センター局３３より見て自局より遠方
の地上局）が・０・・状態で受信状態が非常にわるい場
合に自局を接続し、これ以外の場合は先の局を接続する
というものであり、アプローチ回線の要求を満足するも
のである。This switching connection is possible when the own station is in the 91 Q +1 state, or when the own station is in the . This system connects the local station when the receiving station (station) is in the .
こ＼で第２図を具体的に説明すると、状態番号ｎｌｎの
場合は、自局は・Ｑ ９９状態、先の局は・Ｑ？＋状態
にあり、接続は自局を中継線につなぐ。To explain Fig. 2 in detail here, in the case of state number nln, the own station is in the ・Q99 state, and the previous station is in the ・Q? It is in + state, and the connection connects the own station to the relay line.
また例えば、状態番号・４・の場合は、自局は・ｐ Ｉ
！状態、先の局は・Ｑ＋１状態にあり、接続は先の局を
中継線につなぐ。For example, in the case of state number ・4・, the own station is ・p I
! state, the previous station is in the Q+1 state, and the connection connects the previous station to the trunk line.
その他の状態の場合の接続についても同様にこの図に示
す接続を行なうことを示している。This figure also indicates that the connections shown in this figure are made in other cases as well.
以上の切替接続は、先の局からの帯域外信号を検出して
動作する信号検出回路３１４の出力および受信機３１２
の出力により制御されるＫおよびＬ ＩＪシレー用いて
、第４図のように構成して切替える。The above switching connection connects the output of the signal detection circuit 314 that operates by detecting an out-of-band signal from the previous station and the receiver 312.
The switch is configured as shown in FIG. 4 using K and L IJ relays controlled by the output of .
第４図は、中継線の切替およびこれに関連する部分の説
明図、第４図Ａは地上局設備の切替部分を示す図、第４
図Ｂは、前記切替を行なうリレー回路を示す図である。Figure 4 is an explanatory diagram of trunk line switching and related parts; Figure 4A is a diagram showing the switching part of ground station equipment;
FIG. B is a diagram showing a relay circuit that performs the switching.
第４図Ｂに於て、接点Ｐは自局が状態Ｈｐ ＋ｌのとき
動作するリレーＰの接点、接点ｑは自局が状態・ＱＩｔ
のとき動作するリレーＱの接点、接点ｒは、先きの局か
ら帯域外信号が送られて来たときこれを信号検出器３１
４で検出し動作するリレーＨの接点を示す。In Figure 4B, the contact P is the contact of the relay P that operates when the own station is in the state Hp +l, and the contact q is the contact of the relay P that operates when the own station is in the state QIt.
The contacts of relay Q and contact r, which operate when
4 shows the contacts of relay H that is detected and activated.
そして、第４図Ａに示すように、切替回路３１３の接点
をＫＩＪレーで動作する接点、信号発生器出力を中継線
へ供給する切替スイッチ３１９をＬ ＩＪシレー動作す
る接点で構成する。As shown in FIG. 4A, the contacts of the switching circuit 313 are configured with contacts that operate as KIJ relays, and the changeover switch 319 for supplying the signal generator output to the relay line is configured as contacts that operate as LIJ relays.
以上のように構成すると第２図に示す各状態に対して中
継線の切替および帯域外信号の注入が所定通り行なえア
プローチ回線の要求を満たすことが出来る。With the above configuration, switching of trunk lines and injection of out-of-band signals can be performed as prescribed for each state shown in FIG. 2, and the requirements of the approach line can be satisfied.
すなわち、各地上局３１から中継線３２に出力される自
局受信信号あるいは他局受信信号が所定レベル（Ｐある
いはＱレベル）以上であれば、信号発信器３１８の帯域
外信号が重畳されているので、例えば第３図の番号・１
・・状態では、自局受信信号により接点ｑＩＪｑ２が閉
じ、他局受信信号に重畳された帯域外信号により接点ｒ
１が開き、ｒ２が閉じるので、リレーにおよびリレーＬ
が動作して切替回路３１３の接点はａ側すなわち自局受
信信号を選択すると共にスイッチ回路３１９が閉じてそ
の自局受信信号に帯域外信号を重畳して中継線３２に出
力する。In other words, if the local station reception signal or the other station reception signal output from each ground station 31 to the trunk line 32 is above a predetermined level (P or Q level), the out-of-band signal of the signal transmitter 318 is superimposed. So, for example, number 1 in Figure 3
... state, the contact qIJq2 is closed by the received signal of the own station, and the contact r is closed by the out-of-band signal superimposed on the received signal of the other station.
1 opens and r2 closes, so the relay and relay L
operates, and the contact of the switching circuit 313 selects the a side, that is, the received signal of the local station, and the switch circuit 319 closes to superimpose the out-of-band signal on the received signal of the local station and output it to the trunk line 32.
また・４・・状態においては、自局受信信号により接点
１）ｔ ｒｐ２が閉じ、他局受信信号に重畳された帯
域外信号により接点ｒ１が開き、ｒ２が閉じるので、リ
レーには動作せずリレーＬのみが動作する。In addition, in state 4, contact 1) trp2 is closed by the received signal from the own station, contact r1 is opened by the out-of-band signal superimposed on the received signal from the other station, and contact r2 is closed, so the relay does not operate. Only relay L operates.
したがってこの場合、切換回路３１３はｂ側の状態を維
持すなわち他局受信信号を選択し、またリレーＬの動作
によりスイッチ回路３１９が閉じて信号発信器３１８の
帯域外信号を他局受信信号に重畳して出力する。Therefore, in this case, the switching circuit 313 maintains the state on the b side, that is, selects the other station reception signal, and the switch circuit 319 closes due to the operation of the relay L, and the out-of-band signal of the signal transmitter 318 is superimposed on the other station reception signal. and output.
以下同様に、その他の状態においても第３図の通り動作
する。Similarly, the operation in other states is as shown in FIG. 3.
なお、この帯域外信号は次段地上局３１のリレーＲの接
点ｒｌ、ｒ２を保持動作させるものであり、第３図中の
「信号挿入」とはこの帯域外信号の重畳（挿入）の有無
を示すものである。Note that this out-of-band signal causes the contacts rl and r2 of relay R of the next-stage ground station 31 to hold and operate, and "signal insertion" in FIG. 3 refers to whether or not this out-of-band signal is superimposed (inserted). This shows that.
以上は列車無線の場合について説明したが、細長いサー
ビスエリアを有するものであれば、他の形成の移動無線
にも適用することが出来る。Although the above description has been made regarding the case of train radio, the present invention can also be applied to other types of mobile radio as long as they have a long and narrow service area.
以上のように、この発明によると、自局の受信状態が区
分された受信状態のいずれに属するかを示す情報と、先
の局の受信状態が一定以上の状態にあるか否かを示す情
報とによって中継線の切替制御を行なっているので、切
替系統の制御が論理的であり構成が簡単となる。As described above, according to the present invention, there is information indicating to which of the divided reception conditions the receiving condition of the own station belongs, and information indicating whether the receiving condition of the previous station is above a certain level. Since switching control of the trunk line is performed by the above, the control of the switching system is logical and the configuration is simple.
第１図はこの発明の一実施例を示す構成図、第２図は受
信入力レベルと区分された受信状態の対応を示す図、第
３図は各局の状態別に対応する切替回路が切替選択の関
係を示す説明図、第４図は切替制御系統の説明図である
。
第１図において、１は線路、２は列車局設備、２１はア
ンテナ、３は地上設備、３１は地上局設備、３１１はア
ンテナ、３１２は受信機、３１３は切替回路、３１４は
信号検出回路、３１５はＨＰＦ、３１６はＬＰＦ、３１
７はＡＭＰ。
３１８は信号発信器、３１９はスイッチ回路、３２は中
継線、３３は通信センター局設備である。
第４図においてＫは第１のリレー、Ｌは第２のリレーＰ
は自局が状態Ｎ ｐ Ｉ＋のとき動作するＰ ＩＪシレ
ー接点、ｑは自局が状態ｎ Ｑ・・のとき動作するＱＩ
Ｊレーの接点ｒは、先の局からの帯域外信号を検出した
とき動作するＲ ＩＪシレー接点である。FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing the correspondence between the reception input level and the divided reception states, and FIG. 3 is a diagram showing the correspondence between the reception input level and the divided reception states. An explanatory diagram showing the relationship, FIG. 4 is an explanatory diagram of the switching control system. In FIG. 1, 1 is a track, 2 is train station equipment, 21 is an antenna, 3 is ground equipment, 31 is ground station equipment, 311 is an antenna, 312 is a receiver, 313 is a switching circuit, 314 is a signal detection circuit, 315 is HPF, 316 is LPF, 31
7 is AMP. 318 is a signal transmitter, 319 is a switch circuit, 32 is a trunk line, and 33 is communication center station equipment. In Figure 4, K is the first relay and L is the second relay P.
is the P IJ relay contact that operates when the own station is in the state N p I +, and q is the QI that operates when the own station is in the state n Q...
The J-ray contact r is an R IJ-ray contact that operates when an out-of-band signal from a previous station is detected.
Claims (1)
数の地上局を配置すると共にその各地上局間を中継線で
接続し、上記移動局より送信される信号を上記地上局で
受信してその受信信号を上記中継線を介して一方向に送
出することにより上記移動局と地上基地局間の回線状態
を維持監視するものにおいて、上記サービスエリア末端
に配置された地上局を除く各地上局を、上記移動局より
送信される信号を受信し、それを音声帯域に復調する受
信部と、この受信部より出力される自局受信信号と上記
中継線を介して入力される他局受信信号を切替え、それ
を出力側中継線に出力する切替部と、上記音声帯域外の
帯域外信号を発生する信号発信部と、および上記中継線
を介して入力される他局の帯域外信号の有無および上記
自局受信信号の信号レベルに応じて上記切替部を切替制
御すると共にその切替受信信号の信号レベルが所定レベ
ル以上の時、上記信号発信部の帯域外信号を上記切替受
信信号に重畳させて出力する制御部とで構成したことを
特徴とするアプローチ回線装置。1. A plurality of ground stations are arranged along a strip-shaped service area in which a mobile station moves, and each of the ground stations is connected by a relay line, and the signal transmitted from the mobile station is received by the ground station and then transmitted. In a device that maintains and monitors the line status between the mobile station and the ground base station by transmitting the received signal in one direction via the relay line, each ground station except the ground station located at the end of the service area is , a receiving unit that receives a signal transmitted from the mobile station and demodulates it into a voice band; and a receiving unit that receives the own station receiving signal output from the receiving unit and the other station receiving signal input via the relay line. a switching unit that outputs the switching to the output side trunk line; a signal transmitting unit that generates an out-of-band signal outside the voice band; and the presence or absence of an out-of-band signal of another station input via the trunk line. The switching unit is controlled to switch according to the signal level of the own station reception signal, and when the signal level of the switching reception signal is higher than a predetermined level, the out-of-band signal of the signal transmitting unit is superimposed on the switching reception signal. An approach line device comprising: a control unit that outputs output;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4226376A JPS5823021B2 (en) | 1976-04-13 | 1976-04-13 | approach line equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4226376A JPS5823021B2 (en) | 1976-04-13 | 1976-04-13 | approach line equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52124802A JPS52124802A (en) | 1977-10-20 |
| JPS5823021B2 true JPS5823021B2 (en) | 1983-05-12 |
Family
ID=12631135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4226376A Expired JPS5823021B2 (en) | 1976-04-13 | 1976-04-13 | approach line equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5823021B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000168556A (en) * | 1998-12-01 | 2000-06-20 | Hitachi Ltd | Base station deciding method for moving destination of mobile station and mobile object communication system |
-
1976
- 1976-04-13 JP JP4226376A patent/JPS5823021B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000168556A (en) * | 1998-12-01 | 2000-06-20 | Hitachi Ltd | Base station deciding method for moving destination of mobile station and mobile object communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52124802A (en) | 1977-10-20 |
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