JPH026478B2 - - Google Patents
Info
- Publication number
- JPH026478B2 JPH026478B2 JP58023107A JP2310783A JPH026478B2 JP H026478 B2 JPH026478 B2 JP H026478B2 JP 58023107 A JP58023107 A JP 58023107A JP 2310783 A JP2310783 A JP 2310783A JP H026478 B2 JPH026478 B2 JP H026478B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- monitoring
- data
- operation panel
- main operation
- 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
- 238000012544 monitoring process Methods 0.000 claims description 61
- 230000005540 biological transmission Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
- G07C2009/00761—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by connected means, e.g. mechanical contacts, plugs, connectors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Time-Division Multiplex Systems (AREA)
- Small-Scale Networks (AREA)
- Selective Calling Equipment (AREA)
Description
【発明の詳細な説明】
〔技術分野〕
本発明は時分割多重伝送による遠隔監視システ
ムに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a remote monitoring system using time division multiplex transmission.
従来、この種の遠隔監視システムは第1図に示
すように、主操作盤1と複数の端末器2とを1対
の信号線3を介して接続し、主操作盤1から各端
末器2を個別に呼出すアドレスデータ信号および
返送待機用パルス信号を具備した伝送信号(Vs)
を送出し、被呼出し端末器2から主操作盤1に監
視データを返送待機用パルス信号に同期して返送
する返送信号(VB)を送出するようになつてお
り、主操作盤1に返送される監視データ信号は監
視入力信号のレベルに基いて作成されている場合
が多い。しかしながら、このような従来例にあつ
ては、一過性のパルス信号が出力される防犯セン
サや負荷装置を制御するキースイツチ出力を監視
入力信号とした場合には、監視入力信号を確実に
取込むことができないという不都合があつた。ま
た、このような不都合をなくすために監視入力信
号の入力端にラツチ回路などを外付けして一過性
のパルス信号を記憶しておき、主操作盤1から呼
出されたときにラツチ回路に保持されているデー
タを主操作盤1に返送するようにしたものもあつ
たが、変化後の監視入力信号のレベルがわからな
くなり、例えば監視入力信号がドアの開閉信号で
ある場合において、ドアの開閉されたかどうかの
情報は得られるが、ドアが開放状態か閉塞状態か
の情報は全く得られなくなるという問題があつ
た。
Conventionally, this type of remote monitoring system connects a main operation panel 1 and a plurality of terminal devices 2 via a pair of signal lines 3, as shown in FIG. Transmission signal (Vs) with address data signal for individually calling and pulse signal for waiting for return
A return signal (V B ) is sent out in synchronization with the standby pulse signal, and the monitored data is returned from the called terminal 2 to the main operation panel 1. The monitored data signal to be monitored is often created based on the level of the monitored input signal. However, in such conventional examples, when the monitoring input signal is a key switch output that controls a crime prevention sensor or load device that outputs a transient pulse signal, it is difficult to reliably capture the monitoring input signal. I had the inconvenience of not being able to do that. In addition, in order to eliminate such inconveniences, a latch circuit or the like is externally connected to the input terminal of the monitoring input signal to store temporary pulse signals, and when called from the main operation panel 1, the latch circuit is activated. Some devices sent the retained data back to the main operation panel 1, but the level of the monitoring input signal after the change is unknown, and for example, when the monitoring input signal is a door opening/closing signal, Although information on whether the door is opened or closed can be obtained, there is a problem in that information on whether the door is open or closed cannot be obtained at all.
本発明は上記の点に鑑みて為されたものであ
り、必要に応じて監視入力信号の読取り方法を選
択することができる上、主操作盤から変化検知デ
ータのラツチ手段を容易にリセツトできる遠隔監
視システムを提供することを目的とするものであ
る。
The present invention has been made in view of the above points, and it is possible to select the reading method of the monitoring input signal as necessary, and also to provide a remote control system that can easily reset the change detection data latch means from the main operation panel. The purpose is to provide a monitoring system.
実施例
第2図乃至第4図は本発明一実施例を示すもの
で、全体構成は第1図従来例と同様である。な
お、実施例では主操作盤1から監視入力信号の監
視と端末器2に接続される負荷装置の制御とが同
時に行なえるようになつている。
Embodiment FIGS. 2 to 4 show an embodiment of the present invention, and the overall configuration is the same as that of the conventional example shown in FIG. In the embodiment, monitoring of the monitoring input signal and control of the load device connected to the terminal device 2 can be performed simultaneously from the main operation panel 1.
第3図は主操作盤1から送出される伝送信号
(Vs)を示すもので、伝送信号(Vs)は伝送開
始時点を示すスタート信号(ST)と、負荷制御
モード(0、0、0、*)、レベル監視モード
(0、0、1、*)、変化監視モード(0、1、
0、*)、リセツトモード(1、0、0、*)な
どの制御モードを設定する4ビツトのモード信号
(MD)と、アドレス拡張用の4ビツトのページ
データを伝送するページ信号(PD)と、端末器
2を呼出すための8ビツトのアドレスデータを伝
送するアドレスデータ信号(AD)と、負荷装置
を制御する8ビツトの制御データを伝送する制御
データ信号(CD)と、データが正常に伝送され
たかどうかをチエツクする4ビツトのチエツクサ
ムデータを伝送するチエツクサム信号(CS)と、
端末器2から返送信号(VB)の返送タイミング
を設定する返送待機用のパルス信号(WP)とで
形成されており、各端末器2に対して順次サイク
リツクに伝送される。この伝送信号(Vs)は
100μsのクロツクに基いて非対称パルス巾変調さ
れ、実施例ではスタート信号(ST)は20クロツ
ク(以下CKと記す)、モード信号(MD)…チエ
ツクサム信号(CS)は28CK乃至56CK、返送待
機用パルス信号(WP)は66CKとなつており、
各伝送信号(Vs)の信号長は114CK乃至142CK
(11msec乃至14msec)である。各端末器2には、
伝送信号(Vs)を受信する信号受信手段4と、
受信された伝送信号(Vs)のアドレスデータ信
号(AD)をアドレス設定スイツチ(SA)にて
設定された自己のアドレスと照合するアドレス一
致判定手段5と、アドレス一致時に制御データ信
号(CD)に基いて負荷装置を制御する制御出力
を生じる制御出力手段6と、モード信号(MD)
を判定して動作モード選択信号(VM)およびリ
セツト信号(VR)を出力するモード判定手段7
と、監視入力信号(S0)〜(S7)の立下りあるい
は立下り時に変化検知データがセツトされるラツ
チ手段8と、監視データ信号(SD)をモード判
定手段7のデータに基いて形成するか監視入力信
号(S0)〜(S7)のレベルに基いて形成するかを
選択する監視データ選択手段9と、監視データ選
択手段9から出力されるデータに基いて監視デー
タ信号(SD)を形成するとともに返送信号
(VB)を作成して電流モード信号(信号線3間を
低抵抗で短絡した信号)として信号線3に送出す
る返送信号作成手段10とが設けられている。ま
た、ラツチ手段8は第4図のように、各監視入力
信号(S0)〜(S7)に対応したラツチ回路(R)
にて形成され、各ラツチ回路(R)はDフリツプ
フロツプ(F1)と、エクスクルージブオア回路
(EO)と、S−Rフリツプフロツプ(F2)とで形
成され、所定のサンプリングクロツク(CL)に
て監視入力信号(S0)〜(S7)のレベルをDフリ
ツプフロツプ(F1)に読込んでおき、Dフリツ
プフロツプ(F1)に読込まれたレベルと監視入
力信号(S0)〜(S7)のレベルとが一致している
かどうかをエクスクルージブオア回路(EO)に
て判別し、不一致のときSRフリツプフロツプ
(F2)をセツトして変化検知データをラツチする
ようになつており、モード判定手段7から出力さ
れるリセツト信号(VR)にてSRフリツプフロツ
プ(F2)がリセツトされるようになつている。 Figure 3 shows the transmission signal (Vs) sent from the main operation panel 1. The transmission signal (Vs) includes a start signal (ST) indicating the transmission start point, and a load control mode (0, 0, 0, *), level monitoring mode (0, 0, 1, *), change monitoring mode (0, 1,
0, *), reset mode (1, 0, 0, *), a 4-bit mode signal (MD) that sets the control mode, and a page signal (PD) that transmits 4-bit page data for address expansion. , an address data signal (AD) that transmits 8-bit address data for calling terminal device 2, and a control data signal (CD) that transmits 8-bit control data that controls the load device. a checksum signal (CS) that transmits 4-bit checksum data to check whether the data has been transmitted;
It is formed of a return standby pulse signal (WP) that sets the return timing of the return signal (V B ) from the terminal device 2, and is cyclically transmitted to each terminal device 2 in sequence. This transmission signal (Vs) is
The pulse width is asymmetrically modulated based on a 100μs clock, and in the example, the start signal (ST) is 20 clocks (hereinafter referred to as CK), the mode signal (MD)...the checksum signal (CS) is 28CK to 56CK, and the pulse for waiting for return. The signal (WP) is 66CK,
The signal length of each transmission signal (Vs) is 114CK to 142CK
(11 m sec to 14 m sec ). Each terminal 2 has
a signal receiving means 4 for receiving the transmission signal (Vs);
An address matching determination means 5 that compares the address data signal (AD) of the received transmission signal (Vs) with its own address set by the address setting switch (SA), and a control data signal (CD) when the address matches. a control output means 6 that generates a control output for controlling a load device based on the control output, and a mode signal (MD).
mode determining means 7 for determining the operation mode selection signal (V M ) and the reset signal (V R );
, a latch means 8 in which change detection data is set when the monitoring input signals (S 0 ) to (S 7 ) fall or fall, and a monitoring data signal (SD) is formed based on the data of the mode determination means 7. The monitoring data selection means 9 selects whether to form the monitoring data signal ( SD ) or the monitoring input signal (SD ), and also creates a return signal (V B ) and sends it to the signal line 3 as a current mode signal (a signal obtained by short-circuiting the signal lines 3 with low resistance). In addition, the latch means 8 includes a latch circuit (R) corresponding to each monitoring input signal (S 0 ) to (S 7 ), as shown in FIG.
Each latch circuit (R) is formed of a D flip-flop (F 1 ), an exclusive-OR circuit (EO), and an S-R flip-flop (F 2 ), ), the levels of the monitoring input signals (S 0 ) to (S 7 ) are read into the D flip-flop (F 1 ), and the levels read into the D flip-flop (F 1 ) and the monitoring input signals (S 0 ) to ( The exclusive-OR circuit (EO) determines whether the level of S7 ) matches the level of S7), and if they do not match, the SR flip-flop ( F2 ) is set to latch the change detection data. , the SR flip-flop (F 2 ) is reset by a reset signal (V R ) output from the mode determining means 7.
実施例の動作
いま、主操作盤1からは、各端末器2を個別に
呼出すアドレスデータ信号(AD)および返送待
機用パルス信号(WP)を含む伝送信号(Vs)が
サイクリツクに送出されており、呼出した端末器
2からの返送信号(VB)を受信して監視入力信
号(S0)〜(S7)の状態を監視しており、この監
視入力信号(S0)〜(S7)の状態をレベル監視モ
ードで監視するかあるいは変化監視モードで監視
するかは伝送信号(Vs)に含まれるモード信号
(MD)を適当に設定することにより、主操作盤
1にて任意に選択できるようになつている。一
方、端末器2の動作は第5図のフローチヤートに
示すようになつている。すなわち、伝送信号
(Vs)が信号受信回路4にて受信されると、直ち
に、アドレス一致判定手段5にて伝送されたアド
レスデータと自己の固有アドレスとの一致が判定
され、アドレスが一致していれば、モード信号
(MD)に基いてレベル監視モードか、変化監視
モードかを判別し、レベル監視モードであれば、
監視データ選択手段9にて監視入力信号(S0)〜
(S7)のレベルに基いて監視データ信号(SD)を
形成し、返送信号作成手段10から返送信号
(VB)を送信する。一方、変化監視モードであれ
ば、監視データ選択手段9にてラツチ手段8のデ
ータ(S0)′〜(S7)′に基いて監視データ信号
(SD)を形成し、返送信号作成手段10から返送
信号(VB)を送信する。また、リセツトモード
であれば、ラツチ手段8のデータ(S0)′〜
(S7)′をリセツトし、監視入力信号(S0)〜
(S7)のチエツクを行ない次の監視入力信号(S0)
〜(S7)の変化に備える。すなわち、次の監視入
力信号(S0)〜(S7)の変化によつて変化検知デ
ータが再びセツトされる。本発明による遠隔制御
監視システムは上述のように動作するようになつ
ており、例えば防犯戸締りシステムとして利用す
る場合において、ドアセンサにより検出される開
閉信号を監視入力信号(S0)〜(S7)として入力
しておけば、ドアの開閉による一過性の開閉信号
の有無がラツチ手段8にラツチされるので、主操
作盤1から変化監視モードの伝送信号(Vs)を
送出して各端末器2のラツチ手段8のデータに基
いた監視データ信号(SD)を返送させることに
より、ドアが開閉されたかどうかが監視でき、侵
入が発生したかどうかが容易に判明する。一方、
主操作盤1からレベル監視モードの伝送信号
(Vs)を送出して各端末器2に入力されている監
視入力信号(S0)〜(S7)のレベルに基いて監視
データ信号(SD)を返送させることにより、そ
の時点のドアの開閉状態が容易に判明し、戸締り
の確認が簡単になる。また、主操作盤1からリセ
ツトモードの伝送信号(Vs)を送出して各端末
器2のラツチ手段8を定期的あるいは必要に応じ
てリセツトすることでき、特別なリセツト回路あ
るいはリセツトスイツチ等が不要となり、また主
操作盤1で一括してリセツトできるので、操作も
便利である。Operation of the Embodiment Currently, the main operation panel 1 is cyclically sending out a transmission signal (Vs) containing an address data signal (AD) for individually calling each terminal device 2 and a return standby pulse signal (WP). , receives the return signal (V B ) from the called terminal 2 and monitors the status of the monitoring input signals (S 0 ) to ( S 7 ). ) can be monitored in the level monitoring mode or in the change monitoring mode, which can be arbitrarily selected on the main operation panel 1 by appropriately setting the mode signal (MD) included in the transmission signal (Vs). I'm starting to be able to do it. On the other hand, the operation of the terminal device 2 is as shown in the flowchart of FIG. That is, when the transmission signal (Vs) is received by the signal receiving circuit 4, the address matching determining means 5 immediately determines whether the transmitted address data and its own unique address match, and if the addresses match. If the mode is level monitoring mode, it is determined whether it is level monitoring mode or change monitoring mode based on the mode signal (MD), and if it is level monitoring mode,
The monitoring input signal (S 0 ) ~
A monitoring data signal (SD) is formed based on the level of (S 7 ), and a return signal (V B ) is transmitted from the return signal generating means 10. On the other hand, in the change monitoring mode, the monitoring data selection means 9 forms a monitoring data signal (SD) based on the data (S 0 )' to (S 7 )' of the latch means 8, and the return signal generating means 10 A return signal (V B ) is sent from In addition, in the reset mode, the data (S 0 )' of the latch means 8 are
(S 7 )′ and monitor input signal (S 0 )~
(S 7 ) and next monitoring input signal (S 0 ).
Prepare for changes in ~(S 7 ). That is, the change detection data is set again by the next change in the monitoring input signals (S 0 ) to (S 7 ). The remote control monitoring system according to the present invention operates as described above. For example, when used as a security door locking system, the opening/closing signal detected by the door sensor is converted into monitoring input signals (S 0 ) to (S 7 ). If input as , the presence or absence of a temporary opening/closing signal due to opening/closing of the door will be latched in the latch means 8, so the transmission signal (Vs) of the change monitoring mode will be sent from the main operation panel 1 to each terminal. By returning a monitoring data signal (SD) based on the data of the latch means 8 of 2, it is possible to monitor whether the door has been opened or closed, and it can be easily determined whether or not an intrusion has occurred. on the other hand,
A level monitoring mode transmission signal (Vs) is sent from the main operation panel 1, and a monitoring data signal (SD) is generated based on the level of the monitoring input signals (S 0 ) to (S 7 ) input to each terminal 2. By sending the door back, the open/closed state of the door at that time can be easily determined, making it easy to confirm whether the door is locked. In addition, the latch means 8 of each terminal 2 can be reset periodically or as needed by sending a reset mode transmission signal (Vs) from the main operation panel 1, eliminating the need for a special reset circuit or reset switch. The operation is also convenient since it can be reset all at once from the main operation panel 1.
次に火災感知器出力を監視入力信号(S0)〜
(S7)として入力し、自火報システムを構成する
場合において、変化監視モードの伝送信号(Vs)
を各端末器2にサイクリツクに送出して火災感知
器出力の変化を監視しておき、続いてレベル監視
モードの伝送信号(Vs)を送出して火災感知器
出力のレベルを直接監視し、変化が検出され、か
つレベルが火災状態を示しているときのみ火災報
知を行なうようにすれば、誤報を少くすることが
できる。すなわち、変化監視では異常が検出され
たが次のレベル監視では異常が検出されないとき
には誤動作と判断して火災報知を行なわないよう
にして、誤報を少くしているわけである。 Next, monitor the fire detector output with the input signal (S 0 ) ~
(S 7 ) to configure a self-fire alarm system, the transmission signal (Vs) in change monitoring mode
is cyclically sent to each terminal device 2 to monitor changes in the fire detector output, and then a level monitoring mode transmission signal (Vs) is sent to directly monitor the level of the fire detector output, and changes are made. If a fire alarm is issued only when a fire is detected and the level indicates a fire condition, false alarms can be reduced. In other words, when an abnormality is detected in change monitoring but not detected in the next level monitoring, it is determined that a malfunction has occurred and a fire alarm is not issued, thereby reducing the number of false alarms.
本発明は上述のように構成されており、監視入
力信号の立上りあるいは立下り時に変化検知デー
タがセツトされるラツチ手段と、監視データ信号
をラツチ手段のデータに基いて形成するか監視入
力信号のレベルに基いて形成するかを選択する監
視データ選択手段とを端末器に設け、上記監視デ
ータ選択手段の切換制御あるいはラツチ手段のリ
セツトを行なうためのモード信号を具備した伝送
信号を主操作盤から送出するようにしたものであ
り、必要に応じて監視入力信号の読み取り方法を
選択することができ、汎用性の大きな遠隔監視シ
ステムを提供することができ、また、主操作盤か
ら変化検知データのラツチ手段を容易にリセツト
でき、ラツチ手段のリセツト操作が簡便になると
いう利点がある。
The present invention is constructed as described above, and includes a latch means in which change detection data is set at the rising or falling edge of a monitoring input signal, and a latch means for forming a monitoring data signal based on the data of the latch means. A terminal device is provided with a monitoring data selection means for selecting whether to be formed based on the level, and a transmission signal including a mode signal for controlling the switching of the monitoring data selection means or resetting the latch means is transmitted from the main operation panel. The method of reading monitoring input signals can be selected as needed, providing a highly versatile remote monitoring system, and change detection data can be read from the main operation panel. This has the advantage that the latch means can be easily reset and the reset operation of the latch means is simple.
第1図は本発明に係る遠隔制御システムの概略
構成図、第2図は本発明一実施例の要部ブロツク
回路図、第3図は同上の伝送信号の一例を示す
図、第4図は同上の要部回路図、第5図は同上の
端末器2のフローチヤートである。
1は主操作盤、2は端末器、3は信号線、8は
ラツチ手段、9は監視データ選択手段である。
Fig. 1 is a schematic configuration diagram of a remote control system according to the present invention, Fig. 2 is a main block circuit diagram of an embodiment of the present invention, Fig. 3 is a diagram showing an example of the same transmission signal, and Fig. 4 is a diagram showing an example of the transmission signal. The main circuit diagram of the same as above, and FIG. 5 is a flowchart of the terminal device 2 of the above. 1 is a main operation panel, 2 is a terminal device, 3 is a signal line, 8 is a latch means, and 9 is a monitoring data selection means.
Claims (1)
介して接続し、主操作盤から各端末器を個別に呼
出すアドレスデータ信号および返送待機用パルス
信号を具備した伝送信号を送出し、被呼出し端末
器から主操作盤に監視データ信号を上記返送待機
用パルス信号に同期して返送する返送信号を送出
するようにして成る遠隔監視システムにおいて、
監視入力信号の立上りあるいは立下り時に変化検
知データがセツトされるラツチ手段と、監視デー
タ信号をラツチ手段のデータに基いて形成するか
監視入力信号のレベルに基いて形成するかを選択
する監視データ選択手段とを端末器に設け、上記
監視データ選択手段の切換制御あるいはラツチ手
段のリセツトを行なうためのモード信号を具備し
た伝送信号を主操作盤から送出せしめて成る遠隔
監視システム。1 Connect the main operation panel and a plurality of terminal devices via a pair of signal lines, and send out a transmission signal from the main operation panel that includes an address data signal for individually calling each terminal device and a pulse signal for waiting for return. , a remote monitoring system configured to send a return signal for returning a monitoring data signal from the called terminal to the main operation panel in synchronization with the return standby pulse signal,
Latch means for setting change detection data at the rising or falling edge of the monitoring input signal, and monitoring data for selecting whether to form the monitoring data signal based on the data of the latch means or based on the level of the monitoring input signal. 1. A remote monitoring system comprising a terminal device provided with selection means, and a transmission signal including a mode signal for controlling the switching of the monitoring data selection means or resetting the latch means from the main operation panel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58023107A JPS59148453A (en) | 1983-02-15 | 1983-02-15 | Remote supervisory system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58023107A JPS59148453A (en) | 1983-02-15 | 1983-02-15 | Remote supervisory system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59148453A JPS59148453A (en) | 1984-08-25 |
JPH026478B2 true JPH026478B2 (en) | 1990-02-09 |
Family
ID=12101243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58023107A Granted JPS59148453A (en) | 1983-02-15 | 1983-02-15 | Remote supervisory system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59148453A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6338491U (en) * | 1986-08-29 | 1988-03-12 | ||
JPH01231594A (en) * | 1988-03-11 | 1989-09-14 | Fujitsu Ltd | Collection system for fault information |
JPH01172793U (en) * | 1988-05-26 | 1989-12-07 |
-
1983
- 1983-02-15 JP JP58023107A patent/JPS59148453A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS59148453A (en) | 1984-08-25 |
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