JPS6342996B2 - - Google Patents
Info
- Publication number
- JPS6342996B2 JPS6342996B2 JP14663880A JP14663880A JPS6342996B2 JP S6342996 B2 JPS6342996 B2 JP S6342996B2 JP 14663880 A JP14663880 A JP 14663880A JP 14663880 A JP14663880 A JP 14663880A JP S6342996 B2 JPS6342996 B2 JP S6342996B2
- Authority
- JP
- Japan
- Prior art keywords
- line
- monitoring
- center side
- terminal side
- clock pulse
- 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 23
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000002265 prevention Effects 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Selective Calling Equipment (AREA)
Description
【発明の詳細な説明】
本発明は、センター側と端末機側を監視ライ
ン、制御ライン、及び、グランドラインから成る
３本の伝送線を通して接続し、監視ラインを通し
て端末機側における多数個の被監視対象の状態を
監視し、制御ラインを通して端末機側における多
数個の被制御対象のうちの所望の被制御対象を選
択し、前記監視ライン信号と制御ライン信号の論
理積信号によつて前記選択された被制御対象を作
動させるようにしたもので、例えば、ガス漏れ警
報器等の集中監視制御に適用して総合防災システ
ム等を構成するのに好適な監視制御方式に関す
る。なお、ガス漏れ警報器等の集中監視制御に適
用した場合は、例えば、ガス漏れ検知器、煙検知
器、熱感知器、非常スイツチ、防犯スイツチ等の
被監視対象の状態を監視し、これら被監視対象の
状態に応じて、警報ブザー、非常ベル、確認ラン
プ、動作ランプ、ガス遮断弁、換気扇等の被制御
対象を制御する。DETAILED DESCRIPTION OF THE INVENTION The present invention connects a center side and a terminal side through three transmission lines consisting of a monitoring line, a control line, and a ground line, and connects a large number of devices on the terminal side through the monitoring line. The state of the monitored target is monitored, a desired controlled target is selected from among a large number of controlled targets on the terminal side through a control line, and the selected target is selected based on an AND signal of the monitored line signal and the control line signal. The present invention relates to a supervisory control method suitable for configuring a comprehensive disaster prevention system by applying it to centralized supervisory control of gas leak alarms and the like, for example. In addition, when applied to centralized monitoring control of gas leak alarms, etc., the status of monitored objects such as gas leak detectors, smoke detectors, heat detectors, emergency switches, security switches, etc. is monitored, and the Control objects such as alarm buzzers, emergency bells, confirmation lamps, operation lamps, gas cutoff valves, ventilation fans, etc. according to the status of the monitored objects.
センター側と端末機側を２本の伝送線を介して
接続し、端末機側の被監視対象及び被制御対象を
センター側にて監視制御する方式は既に周知であ
るが、従来の監視制御方式は、１つの被監視対象
（監視項目）及び被制御対象に対して１対（２本）
の伝送線を使用しているため、多項目の監視及び
制御を行う場合、センター側と端末機側とを接続
する伝送線が厖大なものとなり、また、端子盤や
センター側ドライバー、端末機側レシーバを項目
数必要とし、その費用及び作業が大変なものであ
つた。特に、集合住宅等の場合には、各部屋毎に
同じ項目の監視制御対象を配置しなければならな
いため、同じ部屋に多くの配線を必要とした。ま
た、従来の監視方式では、被監視対象の状態をオ
ン・オフの状態でしか監視することができず、そ
のため、監視項目のレベル測定ができない等の欠
点があつた。 A method in which the center side and the terminal side are connected via two transmission lines and the monitored and controlled objects on the terminal side are monitored and controlled by the center side is already well known, but conventional monitoring and control methods is one pair (two wires) for one monitored object (monitoring item) and controlled object.
When monitoring and controlling multiple items, the transmission line connecting the center side and the terminal side becomes enormous, and the terminal board, center driver, terminal side A number of receivers were required, and the cost and work involved were large. Particularly in the case of apartment complexes, etc., the same items of monitoring and control targets must be placed in each room, which requires a large number of wires in the same room. Further, in the conventional monitoring method, the state of the monitored object can only be monitored in the on/off state, and therefore, there have been drawbacks such as the inability to measure the level of the monitored item.
本発明は、上述のごとき実情に鑑みてなされた
もので、以下、図面を参照しながら説明する。 The present invention has been made in view of the above-mentioned circumstances, and will be described below with reference to the drawings.
第１図は、本発明の一実施例を説明するための
電気回路の部分構成図で、図中、はセンター
側、は端末機側を示し、これらセンター側と
端末機側は、制御ラインl1、監視ラインl2、グ
ランドラインl3から成る３本の伝送線によつて結
ばれており、センター側において、常時は、ト
ランジスタTr1がオンされ、伝送線l1を通して端
末機側に電源電圧が供給されている。監視時に
は、トランジスタTr1がオフ、トランジスタTr2
がオンされ、伝送線l2を通してセンター側より
端末機側に所定振幅のクロツクパルスが供給さ
れ、このクロツクパルスの振幅が端末機側にお
いて被監視対象の状態に応じて変化され、この振
幅変化ををセンター側において増幅器AMPを
通して読み取つて端末機側における被監視対象
の状態を監視し、被制御対象選択時には、トラン
ジスタTr2をオフ、トランジスタTr1をオンにし、
制御ラインl1を通してセンター側より被制御対
象選択クロツクパルスを送出し、端末機側にお
いて被制御対象を選択し、次いで、トランジスタ
Tr2をオンにし、制御ラインl2と監視ラインl2の
論理積信号によつて前述のごとくして選択された
被制御対象を駆動する。なお、第１図において、
トランジスタTr3，Tr4は伝送線l1，l2のライン容
量を吸引するためのものである。 FIG. 1 is a partial configuration diagram of an electric circuit for explaining one embodiment of the present invention. In the figure, indicates the center side, and indicates the terminal side. These center side and terminal side are connected to the control line l. 1 , a monitoring line L2 , and a ground line L3.On the center side, transistor Tr1 is normally turned on, and power is supplied to the terminal side through the transmission line L1 . Voltage is supplied. During monitoring, transistor Tr 1 is off, transistor Tr 2
is turned on, a clock pulse of a predetermined amplitude is supplied from the center side to the terminal side through the transmission line L2 , and the amplitude of this clock pulse is changed on the terminal side according to the state of the monitored object, and this amplitude change is applied to the center side. The state of the monitored object on the terminal side is monitored by reading it through the amplifier AMP on the side, and when the controlled object is selected, transistor Tr 2 is turned off, transistor Tr 1 is turned on,
A controlled object selection clock pulse is sent from the center side through the control line l1 , the controlled object is selected on the terminal side, and then the transistor
Tr 2 is turned on and the controlled object selected as described above is driven by the AND signal of the control line l 2 and the monitoring line l 2 . In addition, in Figure 1,
The transistors Tr 3 and Tr 4 are for absorbing the line capacitance of the transmission lines l 1 and l 2 .
第２図は、上述のごとき動作をする端末機側
の電気回路のブロツク線図、第３図は、詳細電気
回路図で、図中、１０及び１１はクロツクパルス
受信回路、１２及び１３はカウンタ、１４はマル
チプレクサ、１５はスイツチング回路、１６はラ
ツチ回路、１７はアンド回路、１８は被制御対象
駆動回路を示し、これらは前記センター側の制
御のもとに次のように動作する。なお、第２図及
び第３図において、同一の作用をする部分には同
一の参照番号が付してある。 FIG. 2 is a block diagram of the electrical circuit on the terminal side that operates as described above, and FIG. 3 is a detailed electrical circuit diagram. In the figure, 10 and 11 are clock pulse receiving circuits, 12 and 13 are counters, 14 is a multiplexer, 15 is a switching circuit, 16 is a latch circuit, 17 is an AND circuit, and 18 is a controlled object drive circuit, which operate as follows under the control of the center side. In addition, in FIGS. 2 and 3, parts having the same function are given the same reference numerals.
常時動作（第４図Ａ期間）
常時（第４図期間Ａ参照）は、前述のように、
センター側において、トランジスタTr1がオ
ン、トランジスタTr2がオフにされ、伝送線l1を
通してセンター側より端末機側に電源電圧
VSが供給されており（第４図、ｃ，ｄ参照）、端
末機側の各電気回路及び図示しない被制御対象機
器及び被監視対象機器に電源電圧Vcc及びVDDが
供給されている。この時、カウンタ１３はリセツ
トされている。 Continuous operation (period A in Figure 4) Constant operation (see period A in Figure 4) is as described above.
On the center side, transistor Tr 1 is turned on, transistor Tr 2 is turned off, and the power supply voltage is transferred from the center side to the terminal side through the transmission line l 1 .
V S is supplied (see Figure 4, c, d), and power supply voltages V cc and V DD are supplied to each electric circuit on the terminal side and to controlled and monitored devices (not shown). . At this time, the counter 13 has been reset.
監視動作時（第４図Ｂ期間）
センター側において、トランジスタTr1をオ
フ、トランジスタTr2をオンにし、伝送線l2を通
してセンター側より端末機側にクロツクパル
スを供給し（第４図ｃ参照）、このクロツクパル
スをクロツクパルス受信回路１１で受信してカウ
ンタ１３を動作させ（第４図ｆ参照）、マルチプ
レクサ１４において、図示しない被監視対象から
の入力データ（第４図ｈ参照）をスキヤンし、こ
の入力データに基づいてスイツチング回路１５を
オン・オフ制御して伝送線l2上のクロツクパルス
の振幅を変化させ（第４図ｂ参照）、その振幅変
化をセンター側において判別して端末機側に
おける被監視対象の状態を判別する。この場合カ
ウンタ１３は、伝送線l1がハイレベルの時にリセ
ツトされるので、必ず０からスタートを開始し、
カウンタ１２は、監視（読み取り）動作終了後に
カウンタ１３によつて必ずリセツトされ、次の被
制御対象選択時に必ず０からスタートするように
構成されている。 During monitoring operation (period B in Figure 4) On the center side, transistor Tr 1 is turned off, transistor Tr 2 is turned on, and a clock pulse is supplied from the center side to the terminal side through the transmission line l 2 (see Figure 4 c). , this clock pulse is received by the clock pulse receiving circuit 11 to operate the counter 13 (see FIG. 4 f), and the multiplexer 14 scans the input data from the monitored object (not shown) (see FIG. 4 h). Based on the input data, the switching circuit 15 is controlled on/off to change the amplitude of the clock pulse on the transmission line l2 (see Figure 4b), and the change in amplitude is determined at the center side and detected by the terminal side. Determine the state of the monitored target. In this case, the counter 13 is reset when the transmission line l1 is at high level, so it always starts from 0.
The counter 12 is always reset by the counter 13 after the monitoring (reading) operation is completed, and is configured so that it always starts from 0 when the next controlled object is selected.
制御動作時（第４図、期間Ｃ参照）
前述のようにして被監視対象の状態を読み取つ
た後に、センター側において、トランジスタ
Tr1をオン、トランジスタTr2をオフにし、伝送
線l1を通してセンター側より端末機側にクロ
ツクパルスを供給し（第４図ｄ参照）、このクロ
ツクパルスをクロツクパルス受信回路１０で受信
し（第４図ｅ参照）、その立下りでカウンタ１２
を作動させる（第４図ａ参照）。この時、センタ
ー側より供給されるクロツクパルスの数は制御
したい被制御機器に対応しており、例えば、図示
のように６個のパルスが供給される時は、第６番
の被制御機器が選択される。このようにして、制
御したい被制御対象機器が選択された後に、セン
ター側において、トランジスタTr1，Tr2をオ
ンにて伝送線l1，l2をハイレベルにすると、アン
ド回路１７が作動してストローブ信号（第４図ｇ
参照）を発生し、前述のごとくして選択された被
制御機器ナンバーのデータをラツチし、ラツチさ
れたデータが被制御機器ドライバーー１８を作動
し、選択された被制御機器を作動する。なお、監
視動作時及び被制御対象選択時における端末機側
の電源電圧は、伝送線l1，l2を通してセンター側
より伝送されてくるクロツクパルスでコンデン
サＣを充電して得ており、端末機側電源電圧の変
動は問題にならない程小さい（第４図ｉ参照）。 During control operation (see Fig. 4, period C) After reading the state of the monitored object as described above, the transistor is
Tr 1 is turned on, transistor Tr 2 is turned off, and a clock pulse is supplied from the center side to the terminal side through the transmission line l 1 (see Figure 4 d), and this clock pulse is received by the clock pulse receiving circuit 10 (Figure 4). (see e), and at the falling edge, the counter 12
(see Figure 4a). At this time, the number of clock pulses supplied from the center side corresponds to the controlled device to be controlled. For example, when 6 pulses are supplied as shown in the figure, the 6th controlled device is selected. be done. After the controlled device to be controlled is selected in this way, on the center side, transistors Tr 1 and Tr 2 are turned on and transmission lines l 1 and l 2 are set to high level, and the AND circuit 17 is activated. strobe signal (Fig. 4g)
), the data of the selected controlled equipment number is latched as described above, and the latched data operates the controlled equipment driver 18 to operate the selected controlled equipment. The power supply voltage on the terminal side during monitoring operation and when selecting the controlled object is obtained by charging the capacitor C with the clock pulses transmitted from the center side through the transmission lines l 1 and l 2 . Fluctuations in the power supply voltage are so small that they do not pose a problem (see Figure 4i).
以上の説明から明らかなように、本発明による
と、
(1) ３芯ケーブルによつて多項目の監視制御が可
能となり、従来技術に比し、伝送線の数をかな
り少なくすることができる。 As is clear from the above description, according to the present invention, (1) monitoring and control of multiple items is possible using a three-core cable, and the number of transmission lines can be significantly reduced compared to the prior art.
(2) 被制御対象機器の電源も３芯ケーブルにて供
給することができるので、集中監視制御に適用
した時のシステム構成が容易である。(2) Since power can be supplied to the controlled equipment using a 3-core cable, the system configuration when applied to centralized monitoring and control is easy.
(3) 集合住宅での防災、防犯システム等に適用し
て好適である。(3) Suitable for application to disaster prevention, crime prevention systems, etc. in apartment complexes.
等の利点がある。There are advantages such as
第１図は、本発明の一実施例を説明するための
電気回路の部分的構成図、第２図は、本発明によ
る監視制御方式の実施に使用される端末機側電気
回路のブロツク線図、第３図は、第２図の回路の
詳細図、第４図は、第１〜３図の回路の動作説明
をするためのタイムスヤートである。
……センター側、……端末機側、l1〜l3…
…伝送線、１０，１１……クロツクパルス受信回
路、１２，１３……カウンタ、１４……マルチプ
レクサ、１５……スイツチング回路、１６……ラ
ツチ回路、１７……アンド回路、１８……被制御
対象機器ドライバー。
FIG. 1 is a partial configuration diagram of an electric circuit for explaining an embodiment of the present invention, and FIG. 2 is a block diagram of a terminal side electric circuit used to implement the supervisory control method according to the present invention. , FIG. 3 is a detailed diagram of the circuit of FIG. 2, and FIG. 4 is a time chart for explaining the operation of the circuit of FIGS. 1 to 3. ...Center side, ...Terminal side, l1 to l3 ...
...Transmission line, 10, 11...Clock pulse receiving circuit, 12, 13...Counter, 14...Multiplexer, 15...Switching circuit, 16...Latch circuit, 17...AND circuit, 18...Controlled device driver.
Claims (1)
ライン、グランドラインから成る３本の伝送線を
介して接続し、前記制御ラインと監視ラインを通
して前記センター側より伝送されてくる信号の論
理和によりコンデンサを充電させて端末機側回路
の電源電圧を作り、監視動作時は、前記制御ライ
ンをオフにするとともに前記監視ラインを通して
センター側より端末機側にクロツクパルスを送出
し、このクロツクパルスの振幅を端末機側におい
て被監視対象の状態に応じて制御し、このクロツ
クパルスの振幅変化をセンター側で読み取り、被
制御対象選択時は、前記監視ラインをオフにする
とともに前記制御ラインを通してセンター側より
端末機側に被制御対象を選兼するクロツクパルス
を送出して前記被制御対象を選択し、次いで、前
記監視ラインをオンにして該監視ライン信号と前
記制御ライン信号との論理積によつて前記選択さ
れた被制御対象を作動させるようにしたことを特
徴とする監視制御方式。1 Connect the fractional machine side and the center side via three transmission lines consisting of a control line, a monitoring line, and a ground line, and by the logical sum of the signals transmitted from the center side through the control line and the monitoring line. A capacitor is charged to create a power supply voltage for the circuit on the terminal side, and during monitoring operation, the control line is turned off and a clock pulse is sent from the center side to the terminal side through the monitoring line, and the amplitude of this clock pulse is changed to the terminal side. Control is performed on the machine side according to the status of the monitored target, and the center side reads the amplitude change of this clock pulse. When the controlled target is selected, the monitoring line is turned off and the control line is passed from the center side to the terminal side. The controlled object is selected by sending a clock pulse that also selects the controlled object, and then the monitoring line is turned on to determine the selected object by ANDing the monitoring line signal and the control line signal. A supervisory control method characterized by activating a controlled object.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14663880A JPS5769991A (en) | 1980-10-20 | 1980-10-20 | Monitor control system |
| DE19813141624 DE3141624A1 (en) | 1980-10-20 | 1981-10-20 | Central alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14663880A JPS5769991A (en) | 1980-10-20 | 1980-10-20 | Monitor control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5769991A JPS5769991A (en) | 1982-04-30 |
| JPS6342996B2 true JPS6342996B2 (en) | 1988-08-26 |
Family
ID=15412244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14663880A Granted JPS5769991A (en) | 1980-10-20 | 1980-10-20 | Monitor control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5769991A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005031164A1 (en) * | 2003-09-26 | 2005-04-07 | Matsushita Electric Industrial Co., Ltd. | Compressor |
| KR102481266B1 (en) | 2016-04-26 | 2022-12-26 | 엘지전자 주식회사 | Scroll compressor |
-
1980
- 1980-10-20 JP JP14663880A patent/JPS5769991A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5769991A (en) | 1982-04-30 |
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