JPH04299620A - Signal path monitor system - Google Patents
Signal path monitor systemInfo
- Publication number
- JPH04299620A JPH04299620A JP6425591A JP6425591A JPH04299620A JP H04299620 A JPH04299620 A JP H04299620A JP 6425591 A JP6425591 A JP 6425591A JP 6425591 A JP6425591 A JP 6425591A JP H04299620 A JPH04299620 A JP H04299620A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- transmission system
- transmission
- switching
- circuit
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は信号路監視方式に関し、
特にディジタル無線回線の送端側での信号路監視方式に
関する。[Industrial Application Field] The present invention relates to a signal path monitoring system.
In particular, the present invention relates to a signal path monitoring method on the transmitting end side of a digital radio line.
【０００２】0002
【従来の技術】従来の信号路監視方式について、図２，
図３を参照して説明する。[Prior Art] Regarding the conventional signal path monitoring system, FIG.
This will be explained with reference to FIG.
【０００３】図２は、現用システムの信号を予備システ
ムへユニポーラ信号段で切替える一般的なディジタル無
線回線の送端側の構成を示しており、ａは予備システム
、ｂ，ｃは現用システムを示す。送信切替回路２の切替
により現用・予備の送並状態がつくられる。ｄを送並信
号路と名づける。[0003] FIG. 2 shows the configuration of the sending end side of a general digital radio line that switches signals from the working system to the protection system using a unipolar signal stage, where a indicates the protection system, and b and c indicate the working system. . By switching the transmission switching circuit 2, a working and standby transmission state is created. d is named the parallel signal path.
【０００４】このような送端側の構成において、送並信
号路ｄにおける従来の信号路監視方式の構成を図３に示
す。FIG. 3 shows the configuration of a conventional signal path monitoring system for the parallel transmission signal path d in such a configuration on the sending end side.
【０００５】図３に示す従来の信号路監視方式は、送並
切替制御が行なわれていないとき送並信号路ｄには信号
が流れていない為、予備送信符号処理回路７の信号断検
出回路８はそのままでは警報を外部へ送出してしまう。
そこでシステムの送信切替回路２内の論理和回路４で自
システムの切替制御信号１０１と下位システムからの切
替制御信号１０４との論理和をとり、論理和出力を自シ
ステムから切替制御信号１０４として更に上位システム
に送出していくことで、外部からの切替制御信号１０１
を串刺し状にして予備送信符号処理回路７へ入力させ、
入力した切替制御信号１０４ａで警報制御回路１０を制
御し、非切替時には警報信号１０５の送出を禁止してい
た。そして、ある現用システムの切替制御信号１０１が
切替状態となると警報制御回路１０の禁止制御を解き、
信号断検出回路８によって送並信号路ｄの状態を監視し
、信号が流れていなければ信号断検出回路８の警報信号
１０５が外部へ送出される。In the conventional signal path monitoring system shown in FIG. 3, since no signal is flowing through the parallel transmission signal path d when parallel transmission switching control is not performed, the signal disconnection detection circuit of the preliminary transmission code processing circuit 7 8 will send out an alarm to the outside if left as is. Therefore, the logical sum circuit 4 in the transmission switching circuit 2 of the system takes the logical sum of the switching control signal 101 of the own system and the switching control signal 104 from the lower system, and further outputs the logical sum from the own system as the switching control signal 104. By sending it to the upper system, the switching control signal 101 from the outside can be
is skewered and inputted to the preliminary transmission code processing circuit 7,
The input switching control signal 104a controls the alarm control circuit 10, and the sending of the alarm signal 105 is prohibited when not switching. Then, when the switching control signal 101 of a certain current system enters the switching state, the prohibition control of the alarm control circuit 10 is released,
The signal disconnection detection circuit 8 monitors the state of the parallel signal path d, and if no signal is flowing, an alarm signal 105 from the signal disconnection detection circuit 8 is sent to the outside.
【０００６】[0006]
【発明が解決しようとする課題】この従来の信号路監視
方式では、切替制御が行なわれて初めて送並信号路の信
号伝送状態が外部へ情報として出る為、事前に送並信号
路の障害を検出して外部へ情報を出すことができないと
いう問題点があった。[Problems to be Solved by the Invention] In this conventional signal path monitoring system, the signal transmission status of the parallel signal path is output as information to the outside only after switching control is performed, so it is necessary to detect failures in the parallel signal path in advance. There was a problem in that it could not be detected and the information could not be released to the outside.
【０００７】予備システムの試験用の信号を発生する信
号発生器を別途備え、この信号発生器からの信号を切替
制御が行なわれていないときに送並信号路に通すように
すれば、上述した問題点は解決できるが、不経済でる。[0007] If a signal generator for generating a signal for testing the backup system is separately provided, and the signal from this signal generator is passed through the parallel signal path when switching control is not being performed, the above-mentioned result can be achieved. The problem can be solved, but it will be uneconomical.
【０００８】本発明の目的は、送並信号路の状態を常時
経済的に監視することができる信号路監視方式を提供す
ることにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a signal path monitoring system that can constantly and economically monitor the status of parallel signal paths.
【０００９】[0009]
【課題を解決するための手段】本発明の信号路監視方式
は、送信側に入力した伝送すべき信号をこの伝送すべき
信号に対応する現用伝送システムにのみ入力するかこの
対応する現用伝送システムおよび予備伝送システムに並
列に入力するかを外部から指令する制御信号と前記対応
する現用システムのすぐ下位の現用伝送システムの実装
の有無を示す実装有無情報信号とを受け前記制御信号が
前記伝送すべき信号を前記対応する現用伝送システムに
のみ入力することを指令し、かつ、前記実装有無情報信
号が実装有を示しているときのみ前記伝送すべき信号を
前記対応する現用回線にのみ入力することを指令する切
替信号を出力する論理操作手段と、この論理操作手段が
出力した前記切替信号に制御されて前記伝送すべき信号
を前記対応する現用伝送システムにのみ入力するか前記
対応する現用伝送システムおよび前記予備伝送システム
に並列に入力するかを切替える切替回路と、この切替回
路と前記予備伝送システムとの間の信号路を監視する信
号断検出回路とを備えている。[Means for Solving the Problems] The signal path monitoring system of the present invention inputs a signal to be transmitted inputted to the transmitting side only to the current transmission system corresponding to the signal to be transmitted, or and a control signal that instructs the backup transmission system to be input in parallel or not, and an implementation presence information signal indicating whether or not an active transmission system immediately below the corresponding active system is installed, and the control signal is transmitted to the transmission system. inputting the signal to be transmitted only to the corresponding working transmission system, and inputting the signal to be transmitted only to the corresponding working line only when the implementation presence information signal indicates that it is installed. a logic operating means for outputting a switching signal for instructing the switching signal; and a logic operating means for inputting the signal to be transmitted only to the corresponding working transmission system under the control of the switching signal outputted by the logic operating means; and a switching circuit that switches whether or not to input parallel input to the backup transmission system, and a signal disconnection detection circuit that monitors a signal path between the switching circuit and the backup transmission system.
【００１０】又、本発明の信号路監視方式は、前記制御
信号をそのまま切替応答信号としてもよい。Further, in the signal path monitoring system of the present invention, the control signal may be directly used as a switching response signal.
【００１１】[0011]
【実施例】次に本発明について図面を参照して説明する
。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.
【００１２】図１は、本発明による信号路監視方式の一
実施例の構成を示すブロック図である。FIG. 1 is a block diagram showing the configuration of an embodiment of a signal path monitoring system according to the present invention.
【００１３】図１の実施例において、送信切替回路２に
おける論理和回路５には外部からの切替制御信号１０１
と下位システムの実装有無情報信号１０３とが入力され
て論理和がとられ、論理和出力信号が切替回路４を制御
する。この制御において、外部からの切替制御信号１０
１が切替状態か実装有無情報信号１０３が開放、すなわ
ち、未実装の場合、論理和回路４の論理和出力信号が切
替回路４を切替える。また、切替応答信号１０２は外部
からの切替制御信号１０１のみに応答するようになって
いる。In the embodiment shown in FIG. 1, the OR circuit 5 in the transmission switching circuit 2 receives a switching control signal 101 from the outside.
and the lower system implementation presence/absence information signal 103 are inputted and logically summed, and the logical sum output signal controls the switching circuit 4. In this control, an external switching control signal 10
1 is in a switching state or the mounting presence/absence information signal 103 is open, that is, when it is not mounted, the OR output signal of the OR circuit 4 switches the switching circuit 4. Furthermore, the switching response signal 102 responds only to the switching control signal 101 from the outside.
【００１４】そこで、現用システムｃ（図２参照）の下
位システムが未実装であると実装有無情報信号１０３ｃ
は開放となり、切替回路４ｃが切替わり送並状態となり
、送並信号路ｄには常時現用システムｃからの信号が流
れるので、予備送信符号処理回路７の信号断検出回路８
は、常時伝送路の状態を監視できる。Therefore, if the lower system of the current system c (see FIG. 2) is not installed, the installation presence/absence information signal 103c is
is opened, the switching circuit 4c is switched and becomes the parallel transmission state, and since the signal from the active system c always flows through the transmission parallel signal path d, the signal disconnection detection circuit 8 of the preliminary transmission code processing circuit 7
can constantly monitor the status of the transmission path.
【００１５】又、このとき外部への切替応答信号１０２
ｃは出力されない為、外見上は非切替状態となり外部で
の監視の混乱を防ぐことができ、外部からの切替制御信
号１０１ｃが切替状態となった時のみ切替応答信号１０
２ｃを返すことで、外部からの制御に対しては従来と変
わりないように見せることができる。[0015] Also, at this time, the switching response signal 102 to the outside
Since c is not output, it appears to be in a non-switched state, which can prevent confusion in external monitoring, and the switching response signal 10 is output only when the switching control signal 101c from the outside is in the switching state.
By returning 2c, it is possible to make it appear as if it is no different from the conventional method to external control.
【００１６】[0016]
【発明の効果】以上説明したように本発明は、最下位の
システムを送並状態におくことにより、常時送並信号路
を経済的に監視できるという効果がある。As described above, the present invention has the advantage that by placing the lowest system in the parallel state, it is possible to economically monitor the parallel signal path at all times.
【図１】本発明の一実施例のブロック図である。FIG. 1 is a block diagram of one embodiment of the present invention.
【図２】一般的なディジタル無線回線の送端側のブロッ
ク図である。FIG. 2 is a block diagram of the transmitting end side of a general digital wireless line.
【図３】従来の信号路監視方式のブロック図である。FIG. 3 is a block diagram of a conventional signal path monitoring system.
１ｂ，１ｃ インタフェース回路２ｂ，２ｃ
送信切替回路
３ｂ，３ｃ 送信符号処理回路
４ｂ，４ｃ 切替回路
５ｂ，５ｃ 論理和回路
７ 予備送信符号処理回路
８ 信号断検出回路
９ 送信符号処理回路1b, 1c interface circuit 2b, 2c
Transmission switching circuits 3b, 3c Transmission code processing circuits 4b, 4c Switching circuits 5b, 5c OR circuit 7 Preliminary transmission code processing circuit 8 Signal disconnection detection circuit 9 Transmission code processing circuit
Claims (2)
の伝送すべき信号に対応する現用伝送システムにのみ入
力するかこの対応する現用伝送システムおよび予備伝送
システムに並列に入力するかを外部から指令する制御信
号と前記対応する現用システムのすぐ下位の現用伝送シ
ステムの実装の有無を示す実装有無情報信号とを受け前
記制御信号が前記伝送すべき信号を前記対応する現用伝
送システムにのみ入力することを指令し、かつ、前記実
装有無情報信号が実装有を示しているときのみ前記伝送
すべき信号を前記対応する現用回線にのみ入力すること
を指令する切替信号を出力する論理操作手段と、この論
理操作手段が出力した前記切替信号に制御されて前記伝
送すべき信号を前記対応する現用伝送システムにのみ入
力するか前記対応する現用伝送システムおよび前記予備
伝送システムに並列に入力するかを切替える切替回路と
、この切替回路と前記予備伝送システムとの間の信号路
を監視する信号断検出回路とを備えたことを特徴とする
信号路監視方式。[Claim 1] An external device determines whether a signal to be transmitted inputted to the transmitting side is inputted only to the working transmission system corresponding to this signal to be transmitted, or inputted in parallel to the corresponding working transmission system and the backup transmission system. The control signal inputs the signal to be transmitted only to the corresponding current transmission system upon receiving a commanding control signal and an implementation presence information signal indicating whether or not a current transmission system immediately below the corresponding current system is installed. logical operation means for outputting a switching signal for instructing that the signal to be transmitted is input only to the corresponding working line only when the mounting presence information signal indicates that the mounting is present; Controlled by the switching signal outputted by this logical operation means, it is possible to switch whether the signal to be transmitted is inputted only to the corresponding working transmission system or inputted in parallel to the corresponding working transmission system and the backup transmission system. A signal path monitoring system comprising a switching circuit and a signal disconnection detection circuit that monitors a signal path between the switching circuit and the backup transmission system.
とすることを特徴とする請求項１記載の信号路監視方式
。2. The signal path monitoring system according to claim 1, wherein the control signal is directly used as a switching response signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6425591A JPH04299620A (en) | 1991-03-28 | 1991-03-28 | Signal path monitor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6425591A JPH04299620A (en) | 1991-03-28 | 1991-03-28 | Signal path monitor system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04299620A true JPH04299620A (en) | 1992-10-22 |
Family
ID=13252887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6425591A Pending JPH04299620A (en) | 1991-03-28 | 1991-03-28 | Signal path monitor system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04299620A (en) |
-
1991
- 1991-03-28 JP JP6425591A patent/JPH04299620A/en active Pending
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