JPH03250947A - Multiplex station - Google Patents

Multiplex station

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Publication number
JPH03250947A
JPH03250947A JP2048152A JP4815290A JPH03250947A JP H03250947 A JPH03250947 A JP H03250947A JP 2048152 A JP2048152 A JP 2048152A JP 4815290 A JP4815290 A JP 4815290A JP H03250947 A JPH03250947 A JP H03250947A
Authority
JP
Japan
Prior art keywords
communication processing
signal
processing section
standby
processing 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.)
Granted
Application number
JP2048152A
Other languages
Japanese (ja)
Other versions
JP2561548B2 (en
Inventor
Ryoji Tokunaga
徳永 良治
Shingo Yamane
山根 信吾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2048152A priority Critical patent/JP2561548B2/en
Publication of JPH03250947A publication Critical patent/JPH03250947A/en
Application granted granted Critical
Publication of JP2561548B2 publication Critical patent/JP2561548B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Time-Division Multiplex Systems (AREA)
  • Small-Scale Networks (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:To ensure self-diagnosis of a standby system by using an output of a pattern generator as a reception signal of a communication processing section in the standby system. CONSTITUTION:An output signal from a pattern generator 32a passes through a selector 31a to be a reception signal 4a and enters a communication processing section 20a. On the other hand, reception signals 4a, 4b and transmission signals 5a, 5b are given respectively to comparison processing sections 6a, 6b. when a bypass command 30b is logical 0, a communication processing section 20b is in standby and the communication processing section 20b regenerates and relays the reception signal 4b as it is and outputs the result as a transmission signal 5b. Thus, the reception signal 4b and the transmission signal 5b relating to the communication processing section 20b in the standby system are made coincident with each other.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、待機系となるステーションを自己診断する
多重化ステーションに関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multiplexing station that self-diagnoses a standby station.

[従来の技術] 第2図は例えば特願昭63−181103号に示された
従来の多重化ステーションを示すブロック図であり、(
13)は受信部、(14)は送信部、(la) (lb
)はバイパススイッチ、(20a) (20b)は通信
処理部、(4a) (4b)は各々通信処理部(20a
) (20b)への受信信号、(5a) (5b)は各
々通信処理部(20a) (20b)からの送信信号、
(6a) (6b)は各々受信信号(4a) (4b)
と送信信号(5a) (5b)との比較処理部、(30
a) (30b)は各々通信処理部(20a) (20
b)からのバイパス指令出力であり各バイパススイッチ
(la) (lb)とインバータ(7a) (7b)に
接続されている。また(Ba) (Bb)は各々比較処
理部(6a) (6b)からの出力とバイパス指令(3
0a) (30b)の条件をとるためのANDゲートで
あり、その出力は各々自己診断結果の判定出力(9a)
 (9b)となる。
[Prior Art] FIG. 2 is a block diagram showing a conventional multiplexing station shown in, for example, Japanese Patent Application No. 181103/1983.
13) is a receiving section, (14) is a transmitting section, (la) (lb
) are bypass switches, (20a) and (20b) are communication processing units, and (4a and 4b) are communication processing units (20a and 4b), respectively.
) (20b) are the received signals, (5a) and (5b) are the transmission signals from the communication processing units (20a) and (20b), respectively.
(6a) (6b) are the received signals (4a) (4b) respectively
and the transmission signal (5a) (5b) comparison processing unit (30
a) (30b) are communication processing units (20a) and (20
It is a bypass command output from the circuit b) and is connected to each bypass switch (la) (lb) and inverter (7a) (7b). (Ba) and (Bb) are the output from the comparison processing units (6a) and (6b) and the bypass command (3), respectively.
0a) It is an AND gate to take the condition of (30b), and its output is the judgment output (9a) of the self-diagnosis result.
(9b).

次に動作について説明する。Next, the operation will be explained.

バイパススイッチ(la)及び(lb)の動作としては
バイパス指令(30a) (30b)の制御により2通
りの接続状態に切替られる。
The operations of the bypass switches (la) and (lb) are switched to two connection states under the control of bypass commands (30a) and (30b).

バイパス指令が“1”の時はバイパススイッチ(la)
で図示したような接続となり、“0”の時はバイパスス
イッチ(1b)で図示したような接続となる。
When bypass command is “1”, bypass switch (la)
The connection is as shown in the figure, and when it is "0", the connection as shown in the figure is made with the bypass switch (1b).

受信部(13)にて光信号から電気信号に変換された受
信信号(4a)が、通信処理部(20a)へ入力され、
通信処理部(20a)からの送信信号(5a)はバイパ
ススイッチ(1a)を経由して、通信処理部(20b)
へ人力される。通信処理部(20b)からの送信信号(
5b)はバイパス指令(30b)が“0”であるため、
送信部(14)へは送信信号(5a)が渡され、光信号
に変換されて送出される。
A received signal (4a) converted from an optical signal to an electrical signal by the receiving unit (13) is input to the communication processing unit (20a),
The transmission signal (5a) from the communication processing unit (20a) is sent to the communication processing unit (20b) via the bypass switch (1a).
is manually powered. Transmission signal from the communication processing unit (20b) (
5b), since the bypass command (30b) is “0”,
The transmission signal (5a) is passed to the transmission section (14), where it is converted into an optical signal and sent out.

以上の説明は、バイパス指令(30a)が“1”(30
b)が“0”の場合を示したが、バイパス指令(3Qa
)が0″、 (30b)が“1″の場合は、逆に受信部
(13)からの受信信号は通信処理部(20b)へ人力
され、又通信処理部(20b)からの送信信号が送信部
(14)へ入力されることになる。
In the above explanation, the bypass command (30a) is "1" (30
b) is “0”, but the bypass command (3Qa
) is 0" and (30b) is "1", conversely, the received signal from the receiving section (13) is inputted to the communication processing section (20b), and the transmitted signal from the communication processing section (20b) is It will be input to the transmitter (14).

さらに、受信信号(4a) (4b)と送信信号(5a
) (5b)は各々比較処理部(6a) (6b)に渡
される。
Furthermore, received signals (4a) (4b) and transmitted signals (5a)
) (5b) are passed to comparison processing units (6a) and (6b), respectively.

バイパス指令(30a)か“1”の時は、通信処理部(
20a)は運転系であり、自系のデータ・も送信信号(
5a)に乗せるため、受信信号(4a)と送信信号(5
a)は一致しない。
When the bypass command (30a) is “1”, the communication processing unit (
20a) is the operation system, which transmits data and transmission signals of its own system (
5a), the received signal (4a) and the transmitted signal (5a)
a) does not match.

バイパス指令(30b)が“0゛の時には、通信処理部
(20a)は待機系であり、通信処理部(20b)は、
受信信号(4b)をそのままの信号形態で送信信号(5
b)として出力する。
When the bypass command (30b) is “0”, the communication processing unit (20a) is a standby system, and the communication processing unit (20b) is
The received signal (4b) is transmitted in the same signal form as the transmitted signal (5).
Output as b).

従って待機系の通信処理部(20b)に関する受信信号
(4b)と送信信号(5b)は一致する。
Therefore, the received signal (4b) and the transmitted signal (5b) regarding the standby communication processing unit (20b) match.

なお、受信信号(4b)は通信処理部(20b)を通過
すると時間の遅延が生ずるため、比較処理部(6b)は
この時間遅延の補正を行う処理を加える。
Note that since a time delay occurs when the received signal (4b) passes through the communication processing section (20b), the comparison processing section (6b) adds processing to correct this time delay.

比較処理部(6b)は、受信信号(4b)と送信信号(
5b)の比較処理を行った後に、その結果をANDゲー
ト(8b)に渡す。ANDゲート(8b)は、待機系に
おいてはバイパス指令(30b)が0″であり、インバ
ータ(7b)にて反転した信号によりゲートが開く(有
意となる)方向となる。
The comparison processing unit (6b) compares the received signal (4b) and the transmitted signal (
After performing the comparison process of 5b), the result is passed to the AND gate (8b). In the AND gate (8b), the bypass command (30b) is 0'' in the standby system, and the gate opens (becomes significant) by the signal inverted by the inverter (7b).

従フて判定出力(9b)は、比較処理部(6b)の結果
に委ねられることになり、受信信号(4b)と送信信号
(5b)が一致しておれば無意状態を、不一致(待機系
の通信処理部で異常が発生)であれば有意状態を表わす
ことになる。
The slave judgment output (9b) is left to the result of the comparison processing unit (6b). If an abnormality occurs in the communication processing unit of

一方、運転系の比較処理部(6a)は、受信信号(4a
)と送信信号(5a)が不一致の状態で正常であり、比
較処理部(6a)の処理結果をそのまま判定出力(9a
)として出力するのは不具合であるため、インバータ(
7a)にてANDゲート(8a)からの出力を無意側に
抑えている。
On the other hand, the operation system comparison processing unit (6a) receives the received signal (4a
) and the transmission signal (5a) are in a mismatched state and are normal, and the processing result of the comparison processing unit (6a) is directly output for judgment (9a).
) is a malfunction, so the inverter (
7a) suppresses the output from the AND gate (8a) to the involuntary side.

比較処理部(6a) (6b) 、インバータ(7a)
 (7b) 、ANDゲート(8a) (8b) 、判
定出力(9a) (9b)における以上の説明は、バイ
パス指令(30a)が“1”、バイパス指令(30b)
が“0”の場合を示したが、バイパス指令(30a)が
“0”、 (30b)が“1”の場合は、運転系と待機
系の関係が逆になるだけである。
Comparison processing unit (6a) (6b), inverter (7a)
(7b), AND gate (8a) (8b), judgment output (9a) (9b) The above explanation is based on the assumption that the bypass command (30a) is "1" and the bypass command (30b) is "1".
Although the case where the bypass command (30a) is "0" and the bypass command (30b) is "1" is shown, the relationship between the operating system and the standby system is simply reversed.

従って、比較処理部(6b)、インバータ(7b)。Therefore, the comparison processing section (6b) and the inverter (7b).

ANDゲート(8b)は運転系の動きをし、比較処理部
(5a)、インバータ(7a)、 ANDゲート(8a
)は待機系の動きをするのは申すまでもない。
The AND gate (8b) performs the operation system, and the comparison processing section (5a), the inverter (7a), and the AND gate (8a
) Needless to say, it behaves like a standby system.

[発明が解決しようとする課題] 従来の多重化ステーションは以上のように構成されてい
るので、外部からの受信信号に再生中継ができないよう
な波形割れとか符号歪が生じた場合には、比較処理部は
判定出力を有意にするなどの誤判定を行う場合があり、
待機系の自己診断を確実に行なうことができないという
課題があった。
[Problems to be Solved by the Invention] Conventional multiplexing stations are configured as described above, so when a received signal from the outside has waveform cracking or code distortion that makes it impossible to reproduce and relay it, it is difficult to compare The processing unit may make incorrect judgments such as making the judgment output significant.
There was a problem in that it was not possible to reliably perform self-diagnosis of the standby system.

この発明は上記のような課題を解決するためになされた
もので、外部からの受信信号波形に影響されないで比較
処理ができ、待機系の自己診断を確実にし、システムの
信頼性を向上させることができる多重化ステーションを
得ることを目的とする。
This invention was made in order to solve the above-mentioned problems, and it is possible to perform comparison processing without being affected by externally received signal waveforms, ensure self-diagnosis of the standby system, and improve system reliability. The objective is to obtain a multiplexing station capable of

[課題を解決するための手段] この発明に係る多重化ステーションは、受信部からの信
号とパターンジェネレータからの信号を切替るセレクタ
を設は待機系においては、バターンジエネレータからの
出力信号を自系の通信処理部の受信信号とするようにし
たものであり、比較処理手段により待機系の通信処理部
の受信信号と送信信号とを比較することにより待機系の
通信処理部の自己診断をするようにしたものである。
[Means for Solving the Problems] The multiplexing station according to the present invention is equipped with a selector that switches between a signal from a receiving section and a signal from a pattern generator, and in a standby system, automatically switches output signals from a pattern generator. The communication processing unit in the standby system performs self-diagnosis by comparing the received signal and the transmission signal of the communication processing unit in the standby system using a comparison processing means. This is how it was done.

[作用コ この発明におけるセレクタは、運転系においては外部か
らの受信信号を選択し、待機系においてはパターンジェ
ネレータからの出力信号を選択するように作用する。
[Operation] The selector in this invention operates to select a received signal from the outside in the operating system, and to select an output signal from the pattern generator in the standby system.

[発明の実施例] 以下、この発明の一実施例を図について説明する。[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.

第1図において、(13)は受信部、(14)は送信部
、(la) (lb)はバイパススイッチ、(20a)
 (20b)は通信処理部、(4a) (4b)は各々
通信処理部(20a) (20b)への受信信号、(3
1a) (31b)はセレクタ、(32a) (32b
)はパターンジェネレータ、(5a) (5b)は各々
通信処理部(20a) (20b)からの送信信号、(
6a) (6b)は各々受信信号(4a) (4b)と
送信信号(5a) (5b)との比較処理部、(30a
) (30b)は各々通信処理部(20a) (20b
)からのバイパス指令であり各々バイパススイッチ(l
a) (lb)とインバータ(7a) (7b)及びセ
レクタ(31a) (31b)に接続さj、ている。ま
た(8a) (8b)は各々比較処理部(6a) (6
b)からの出力とバイパス指令(30a) (30b)
との条件をとるためのANDゲートであり、その出力は
各々自己診断結果の判定出力(9a) (9b)となる
In FIG. 1, (13) is a receiving section, (14) is a transmitting section, (la) (lb) is a bypass switch, (20a)
(20b) is a communication processing unit, (4a) and (4b) are reception signals to the communication processing units (20a) and (20b), respectively.
1a) (31b) is a selector, (32a) (32b
) is a pattern generator, (5a) and (5b) are transmission signals from communication processing units (20a and 20b), respectively.
6a) (6b) are comparison processing units for the received signals (4a) (4b) and the transmitted signals (5a) (5b), respectively, (30a)
) (30b) are communication processing units (20a) and (20b), respectively.
) is a bypass command from each bypass switch (l
a) (lb) is connected to the inverter (7a) (7b) and the selector (31a) (31b). In addition, (8a) and (8b) are the comparison processing units (6a) and (6
Output from b) and bypass command (30a) (30b)
This is an AND gate for taking the conditions, and its outputs are the judgment outputs (9a) and (9b) of the self-diagnosis results, respectively.

次に動作について説明する。Next, the operation will be explained.

バイパススイッチ(1a)及び(1b)の動作としては
バイパス指令(30a) (30b)の制御により2通
りの接続状態に切替られる。バイパス指令が“1”の時
は(la)のような接続となり、“0”の時は(1b)
のような接続となる。
The operations of the bypass switches (1a) and (1b) are switched to two connection states under the control of bypass commands (30a) and (30b). When the bypass command is “1”, the connection is like (la), and when it is “0”, it is (1b)
The connection will be like this.

セレクタ(31a) n1b)は各々バイパス指令(l
a) (lb)にて制御され、バイパス指令が“1”の
時はB入力をY出力に通過させてA人力を抑止し、バイ
パス指令が“0”の時はA入力をY出力に通過させて8
人力を抑止する。
The selectors (31a) and n1b) each receive a bypass command (l
a) Controlled by (lb), when the bypass command is "1", the B input is passed to the Y output to suppress A human power, and when the bypass command is "0", the A input is passed to the Y output Let me do it 8
Deter human power.

従って、受信部(13)にて光信号から電気信号に変換
された外部からの受信信号はセレクタ(31a)を通過
して受信信号(4a)となって通信処理部(20a)へ
入力され、通信処理部(20a)からの送信信号(5a
)はバイパススイッチ(la)を経由してセレクタ(3
1b)とバイパススイッチ(1b)へ入力される。
Therefore, the received signal from the outside, which is converted from an optical signal to an electrical signal in the receiving section (13), passes through the selector (31a), becomes a received signal (4a), and is input to the communication processing section (20a). Transmission signal (5a) from the communication processing unit (20a)
) is connected to the selector (3) via the bypass switch (la).
1b) and the bypass switch (1b).

セレクタ(31b)はバイパス指令(30b)が“0”
であり、パターンジェネレータ(32b)からの出力信
号を通過させ、これか通信処理部(20b)の受信信号
(4b)となる。そして通信処理部(20b)からの送
信信号(5b)はバイパス指令(30b)が“0”であ
るため、送信部(14)へは送信信号(5a)が渡され
、光信号に変換されて送出される。
The bypass command (30b) of the selector (31b) is “0”
The output signal from the pattern generator (32b) is passed through and becomes the received signal (4b) of the communication processing section (20b). Since the bypass command (30b) of the transmission signal (5b) from the communication processing section (20b) is "0", the transmission signal (5a) is passed to the transmission section (14) and converted into an optical signal. Sent out.

以上の説明は、バイパス指令(30a)が“1”(30
b)が“0”の場合を示したが、バイパス指令(30a
)が“0”  (3Qb)が“1”の場合は、逆に受信
部(13)からの外部からの受信信号はバイパススイッ
チ(la)とセレクタ(31b) u由して、受信信号
(4b)となりそのまま通信処理部(20b)へ人力さ
れ、また通信処理部(20b)からの送信信号(5b)
が送信部(14)へ渡されることになる。
In the above explanation, the bypass command (30a) is "1" (30
b) is “0”, but the bypass command (30a
) is "0" (3Qb) is "1", on the other hand, the externally received signal from the receiver (13) passes through the bypass switch (la) and selector (31b) u, and the received signal (4b ), which is input directly to the communication processing unit (20b), and the transmission signal (5b) from the communication processing unit (20b) is
will be passed to the transmitter (14).

そしてパターンジェネレータ(32a)からの出力信号
は、セレクタ(31a)を通過して受信信号(4a)と
なり、通信処理部(20a)へ入力される。
The output signal from the pattern generator (32a) passes through the selector (31a) and becomes a received signal (4a), which is input to the communication processing section (20a).

一方、受信信号(4a) (4b)と送信信号(5a)
 (5b)は各々比較処理部(6a) (6b)に渡さ
れる。
On the other hand, the received signal (4a) (4b) and the transmitted signal (5a)
(5b) are passed to comparison processing units (6a) and (6b), respectively.

バイパス指令(30a)か“1”の時には、通信処理部
(20a)は運転系であり、自系のデータも送信信号(
5a)に乗せるため受信信号(4a)と送信信号(5a
)は一致しない。
When the bypass command (30a) is "1", the communication processing unit (20a) is in the operating system, and the data of its own system is also transmitted as the transmission signal (
5a), the received signal (4a) and the transmitted signal (5a)
) does not match.

バイパス指令(30b)が“0”の時には、通信処理部
(20b)は待機系であり、通信処理部(20b)は、
受信信号(4b)をそのままの信号形態で再生中継して
送信信号(5b)として出力する。
When the bypass command (30b) is “0”, the communication processing unit (20b) is a standby system, and the communication processing unit (20b) is
The received signal (4b) is regenerated and relayed in its original signal form and output as a transmitted signal (5b).

従って、待機系の通信処理部(20b)に関する受信信
号(4b)と送信信号(5b)は一致する。
Therefore, the received signal (4b) and the transmitted signal (5b) regarding the standby communication processing unit (20b) match.

なお、受信信号(4b)は通信処理部(20b)を通過
すると時間の遅延が生ずるため、比較処理部(6b)は
この時間遅延の補正を行う処理を加える。
Note that since a time delay occurs when the received signal (4b) passes through the communication processing section (20b), the comparison processing section (6b) adds processing to correct this time delay.

比較処理部(6b)は、受信信号(4b)と送信信号(
5b)との比較処理を行った後に、その結果をANDゲ
ート(8b)に渡す。ANDゲート(8b)は、待機系
においてはバイパス指令(30b)が“0”であり、イ
ンバータ(7b)にて反転した信号によりゲートが開く
(有意となる)方向となる。
The comparison processing unit (6b) compares the received signal (4b) and the transmitted signal (
After performing comparison processing with 5b), the result is passed to an AND gate (8b). In the AND gate (8b), the bypass command (30b) is "0" in the standby system, and the gate opens (becomes significant) by the signal inverted by the inverter (7b).

従フて判定出力(9b)は、比較処理部(6b)の結果
に委ねられることになり、受信信号(4b)と送信信号
(5b)が一致しておれば無意状態を、不一致(待機系
の通信処理で異常が発生)であれば有意状態を表わすこ
とになる。
The slave judgment output (9b) is left to the result of the comparison processing unit (6b). (an abnormality has occurred in the communication process), this indicates a significant state.

そして、運転系の比較処理部(6a)は、受信信号(4
a)と送信信号(5a)が不一致の状態で正常であり、
比較処理部(6a)の処理結果をそのまま判定出力(9
a)として出力するのは問題であるため、インバータ(
7a)にてANDゲート(8a)からの出力を無意側に
抑えている。
The operation system comparison processing unit (6a) then processes the received signal (4
a) and the transmitted signal (5a) are in a mismatched state and are normal;
The processing result of the comparison processing unit (6a) is directly output as a judgment (9
Since it is a problem to output as a), the inverter (
7a) suppresses the output from the AND gate (8a) to the involuntary side.

比較処理部(6a) (6b)、インバータ(7a) 
(7b)、ANDゲート(8a) (8b)、判定出力
(9a) (9b)における以上の説明は、バイパス指
令(30a)が“1”(30b)が“0”の場合を示し
たがバイパス指令(30a)が“0”  (30b)が
“1”の場合は、動作系と待機系の関係か逆になるだけ
である。
Comparison processing unit (6a) (6b), inverter (7a)
(7b), AND gate (8a) (8b), judgment output (9a) (9b) The above explanation shows the case where bypass command (30a) is "1" (30b) is "0", but bypass When the command (30a) is "0" and the command (30b) is "1", the relationship between the active system and the standby system is simply reversed.

従って、比較処理部(6b)、インバータ(7b)、A
NDゲート(8b)は運転系の動きをし、比較処理部(
6a)、インバータ(7a)、ANDゲート(8a)は
待機系の動きをするのは申すまでもない。
Therefore, the comparison processing section (6b), the inverter (7b), and the
The ND gate (8b) performs operation-related movements, and the comparison processing section (
6a), the inverter (7a), and the AND gate (8a) needless to say operate as standby systems.

なお、上記実施例では、2重化の例を示したが、3重化
以上のものにも通用できる。即ち、多重化ステーション
における自己診断に適用できる。
In the above embodiment, an example of duplexing was shown, but it can also be applied to triplexing or more. That is, it can be applied to self-diagnosis in multiplexing stations.

[発明の効果コ 以上のように、この発明によれば、待機系においてはパ
ターンジェネレータ出力を通信処理部の受信信号にする
ように構成したので、外乱の生じやすい外部からの受信
信号を使用しないため、待機系の自己診断を確実に行う
ことができる多重化ステーションが得られる効果がある
[Effects of the Invention] As described above, according to the present invention, in the standby system, the output of the pattern generator is configured to be used as the reception signal of the communication processing section, so that the reception signal from the outside, which is likely to cause disturbance, is not used. Therefore, it is possible to obtain a multiplexed station that can reliably perform self-diagnosis of the standby system.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明の一実施例による多重化ステーション
を示すブロック図、第2図は従来の多重化ステーション
を示すブロック図である。 図において(30a) (30b)はバイパス指令、(
31a)(31b)はセレクタ、(32a) (32b
)はパターンジェネレータ、(4a) (4b)は受信
信号、(5a) (5b)は送信信号である。 なお、図中、同一符号は同一、又は相当部分を示す。
FIG. 1 is a block diagram showing a multiplexing station according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional multiplexing station. In the figure, (30a) and (30b) are bypass commands, (
31a) (31b) are selectors, (32a) (32b
) is a pattern generator, (4a) and (4b) are received signals, and (5a) and (5b) are transmitted signals. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

【特許請求の範囲】[Claims] 受信部と送信部との間に設けられ一つを運転系に他を待
機系として多重化して使用される複数の通信処理部、上
記待機系の通信処理部の受信信号と該待機系通信処理部
で無処理で再生中継された送信信号とを比較し、両信号
が同一であれば該待機系通信処理部が正常であると自己
診断する比較処理手段を備えた多重化ステーションにお
いて、上記自己診断に用いるための信号を出力するパタ
ーンジェネレータと、このパターンジェネレータから出
力された信号を上記待機系通信処理部に与え、上記受信
部からの信号を上記運転系の通信処理部に与えるよう切
替を行なうセレクタを設けたことを特徴とする多重化ス
テーション。
A plurality of communication processing units provided between the receiving unit and the transmitting unit and used in a multiplex manner, one of which is used as an operating system and the other as a standby system, and a reception signal of the standby system communication processing unit and the standby system communication processing. In the multiplexing station, the multiplexing station is equipped with a comparison processing means that compares the transmitted signal that is regenerated and relayed without processing in the standby communication processing section, and self-diagnoses that the standby communication processing section is normal if both signals are the same. A pattern generator that outputs a signal for use in diagnosis, and a switch that provides the signal output from the pattern generator to the standby system communication processing section and the signal from the reception section to the operation system communication processing section. A multiplexing station characterized in that it is provided with a selector for performing multiplexing.
JP2048152A 1990-02-28 1990-02-28 Multiplexing station Expired - Fee Related JP2561548B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2048152A JP2561548B2 (en) 1990-02-28 1990-02-28 Multiplexing station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2048152A JP2561548B2 (en) 1990-02-28 1990-02-28 Multiplexing station

Publications (2)

Publication Number Publication Date
JPH03250947A true JPH03250947A (en) 1991-11-08
JP2561548B2 JP2561548B2 (en) 1996-12-11

Family

ID=12795394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2048152A Expired - Fee Related JP2561548B2 (en) 1990-02-28 1990-02-28 Multiplexing station

Country Status (1)

Country Link
JP (1) JP2561548B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62214741A (en) * 1986-03-15 1987-09-21 Nec Corp Line supervisory system
JPH01238334A (en) * 1988-03-18 1989-09-22 Fujitsu Ltd Automatic fault detecting and switching system
JPH0230252A (en) * 1988-07-20 1990-01-31 Mitsubishi Electric Corp Multiplex station

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62214741A (en) * 1986-03-15 1987-09-21 Nec Corp Line supervisory system
JPH01238334A (en) * 1988-03-18 1989-09-22 Fujitsu Ltd Automatic fault detecting and switching system
JPH0230252A (en) * 1988-07-20 1990-01-31 Mitsubishi Electric Corp Multiplex station

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