JPH0787672B2 - Power monitor control circuit - Google Patents
Power monitor control circuitInfo
- Publication number
- JPH0787672B2 JPH0787672B2 JP57025970A JP2597082A JPH0787672B2 JP H0787672 B2 JPH0787672 B2 JP H0787672B2 JP 57025970 A JP57025970 A JP 57025970A JP 2597082 A JP2597082 A JP 2597082A JP H0787672 B2 JPH0787672 B2 JP H0787672B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- power supply
- reference voltage
- control 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.)
- Expired - Lifetime
Links
Landscapes
- Direct Current Feeding And Distribution (AREA)
Description
【発明の詳細な説明】 本発明は電子機器におけるシステムのパワーシーケンス
コントロールおよびパワーモニターを行なう制御回路に
係り、特に直流電源を有したシステムに好適な電源制御
回路に関する。The present invention relates to a control circuit for performing power sequence control and power monitoring of a system in electronic equipment, and more particularly to a power supply control circuit suitable for a system having a DC power supply.
従来の電子機器におけるシステムのパワーシーケンスコ
ントロールは、第１図に示すような回路により行なわれ
ていた。つまり、この従来例では、AC100Ｖが供給され
る複数の直流電源1,1,…の制御を、各直流電源１の前段
に設けられたACスイッチ２をシーケンスコントローラ４
でオン，オフさせることによって行なっていた。そのた
めスイッチ開閉時にノイズが発生しやすく、信頼度に欠
け、かつ実装規模が大きくなるといった欠点があった。The power sequence control of the system in the conventional electronic equipment is performed by the circuit as shown in FIG. In other words, this prior art, AC 100 plurality of direct current power source 1, 1 V is supplied, ... control, AC switch 2 a sequence controller 4 provided in front of the direct-current power supply 1
It was done by turning it on and off. Therefore, there are drawbacks that noise is likely to occur when the switch is opened / closed, reliability is low, and the mounting scale is large.
また、電子機器の高性能化，高機能化に伴ない直流電源
も単にオン，オフするのみでなく、過電圧，過電流，低
電圧等の異常検出モニタと、異常発生時にシステムに与
える影響を軽減するための遮断回路、並びに電源オン，
オフのシーケンスコントロールが必要となる。ところ
が、従来は主にAC100Ｖを制御していた。この為、実装
規模が大きくなり信頼度も寿命の点で十分ではなかっ
た。In addition to the high performance and high functionality of electronic equipment, not only the DC power supply is turned on and off, but also the abnormality detection monitor for overvoltage, overcurrent, low voltage, etc., and the impact on the system when an abnormality occurs are reduced. Shut-off circuit, and power on,
Off sequence control required. However, conventionally, AC 100 V was mainly controlled. Therefore, the mounting scale becomes large and the reliability is not sufficient in terms of life.
本発明の目的は、電子機器等の装置において電源の投
入，遮断時のシーケンス制御を行ない、かつ過電流，過
電圧，低電圧など異常現象を監視する機能を有し、信頼
度が高く、かつ実装規模が大きくならないようにしたパ
ワーモニターコントロール回路を提供することにある。An object of the present invention is to perform sequence control at the time of turning on / off power in an apparatus such as an electronic device, and to have a function of monitoring an abnormal phenomenon such as overcurrent, overvoltage, and low voltage, which is highly reliable and mounted. It is to provide a power monitor control circuit that does not increase the scale.
以下図面を用いてこの発明を説明する。The present invention will be described below with reference to the drawings.
第２図は本発明の一実施例を示すものである。FIG. 2 shows an embodiment of the present invention.
この実施例では、AC100Ｖが供給される直流電源1,1,…
の前段に、共通のACスイッチ２が設けられている。そし
て、直流電源1,1,…はシーケンスコントローラ４によっ
てオン，オフされるスイッチ回路５により制御される。In this embodiment, DC power supplies 1, 100 ...
A common AC switch 2 is provided in front of the. The DC power supplies 1, 1, ... Are controlled by the switch circuit 5 which is turned on and off by the sequence controller 4.
スイッチ回路５は、例えば第３図に示すように構成され
る。このスイッチ回路５は、基準電圧源VSを含んでお
り、この基準電圧源VSの電圧を上記各直流電源1,1,…に
個別に供給し、遮断するためのスイッチ群６と、異常発
生時に全電源を遮断するためのスイッチ７とを備えてい
る。The switch circuit 5 is configured, for example, as shown in FIG. The switch circuit 5 includes a reference voltage source V S , and a switch group 6 for individually supplying the voltage of the reference voltage source V S to each of the DC power sources 1, 1, ... And a switch 7 for shutting off all the power when it occurs.
なお、図中、３はDC保護スイッチである。In the figure, 3 is a DC protection switch.
本発明によれば、基準電圧源VSの電圧を各直流電源の基
準電圧とし、この基準電圧のオン，オフにて各直流電源
をコントロールする。この為シーケンス制御回路４によ
りスイッチ群６のオン，オフ制御を行なうと各直流電源
のオンオフシーケンス制御が可能となる。また各直流電
源から出力される電圧を図示しないモニタ回路にて監視
し、過電圧，過電流，低電圧等の異常発生時にモニタ回
路から出力される異常出力信号にてスイッチ７をオフし
て基準電圧を遮断する。本発明は従来のようにACリレー
を直流電源の制御に使用しないため、リレー開閉時のノ
イズが発生せずコンピュータ等の誤動作が防止される。
また、パワーシーケンスコントローラ及びパワーモニタ
回路の信頼度が向上され、更に回路実装の簡略化が図
れ、小型システム開発が可能となる。According to the present invention, the voltage of the reference voltage source V S is used as the reference voltage of each DC power supply, and each DC power supply is controlled by turning this reference voltage on and off. Therefore, when the sequence control circuit 4 controls the ON / OFF of the switch group 6, the ON / OFF sequence control of each DC power supply becomes possible. Also, the voltage output from each DC power supply is monitored by a monitor circuit (not shown), and when an abnormality such as overvoltage, overcurrent, or low voltage occurs, the switch 7 is turned off by the abnormal output signal output from the monitor circuit to turn off the reference voltage. Shut off. Since the present invention does not use an AC relay for controlling a DC power supply as in the conventional case, noise when the relay is opened and closed does not occur, and malfunction of a computer or the like is prevented.
Further, the reliability of the power sequence controller and the power monitor circuit is improved, the circuit mounting can be simplified, and the small system can be developed.
第１図は従来システムに使用されている回路図、第２図
は本発明に係る制御回路の一実施例を示す回路図、第３
図は基準電圧源を含むスイッチ回路の一例を示す回路図
である。 １……直流電源、２……ACスイッチ、３……DC保護スイ
ッチ、４……シーケンスコントローラ、VS……基準電圧
源。FIG. 1 is a circuit diagram used in a conventional system, FIG. 2 is a circuit diagram showing an embodiment of a control circuit according to the present invention, and FIG.
The figure is a circuit diagram showing an example of a switch circuit including a reference voltage source. 1 ...... DC power source, 2 ...... AC switch, 3 ...... DC protection switch, 4 ...... sequence controller, V S ...... reference voltage source.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中野 寧 東京都青梅市藤橋３丁目３番地の２ 日立 青梅電子株式会社内 (56)参考文献 特開 昭54−32732（ＪＰ，Ａ) 特開 昭54−124238（ＪＰ，Ａ) 特開 昭49−114754（ＪＰ，Ａ) 実開 昭56−27710（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nei Nakano 2 3-3, Fujibashi, Ome-shi, Tokyo Inside Hitachi Ome Electronics Co., Ltd. (56) References JP-A-54-32732 (JP, A) JP-A-SHO 54-124238 (JP, A) JP-A-49-114754 (JP, A) Actually developed Shou 56-27710 (JP, U)
Claims (1)
れるシステムの組が、複数存在する電子機器の前記直流
電圧電源を制御するパワーモニターコントロール回路に
おいて、 前記各直流電圧電源からの異常を検出し、かつ前記直流
電圧電源の少なくとも一つからの異常を検出することに
よって異常検出信号を発するモニター回路と、 基準電圧源と、 前記基準電圧源の電圧を前記各直流電圧源に個別に供給
し又は遮断するためのスイッチ群からなる第１のスイッ
チ回路と、 前記各直流電圧電源に供給する前記基準電圧源の電圧を
同時に遮断できる第２のスイッチ回路とを具備し、 前記第２のスイッチ回路は前記基準電圧源と前記第１の
スイッチ回路の間に位置し、 前記直流電圧電源は前記基準電圧源の電圧の供給又は遮
断によって制御され、 上記電子機器への前記各直流電圧電源の供給又は遮断
は、上記第１のスイッチ回路を順序制御することによっ
て行うようにされ、 前記モニター回路の異常検出信号に基づき、上記第２の
スイッチ回路によって、上記電子機器への前記各直流電
圧電源の供給を遮断するようにされてなることを特徴と
するパワーモニターコントロール回路。1. A power monitor control circuit for controlling the DC voltage power supply of a plurality of electronic devices, wherein a set of a DC voltage power supply and a system to which the DC voltage power supply is supplied is configured to detect an abnormality from each DC voltage power supply. A monitor circuit that detects and outputs an abnormality detection signal by detecting an abnormality from at least one of the DC voltage sources, a reference voltage source, and the voltage of the reference voltage source is individually supplied to each of the DC voltage sources. A second switch circuit capable of simultaneously interrupting the voltage of the reference voltage source supplied to each of the DC voltage power supplies, and the second switch circuit. A circuit is located between the reference voltage source and the first switch circuit, and the DC voltage source is controlled by supplying or shutting off the voltage of the reference voltage source. Supplying or shutting off each of the DC voltage power supplies to the electronic device is performed by sequentially controlling the first switch circuit, and based on an abnormality detection signal of the monitor circuit, the second switch circuit. The power monitor control circuit is configured to cut off the supply of the DC voltage power supplies to the electronic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57025970A JPH0787672B2 (en) | 1982-02-22 | 1982-02-22 | Power monitor control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57025970A JPH0787672B2 (en) | 1982-02-22 | 1982-02-22 | Power monitor control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58144532A JPS58144532A (en) | 1983-08-27 |
| JPH0787672B2 true JPH0787672B2 (en) | 1995-09-20 |
Family
ID=12180584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57025970A Expired - Lifetime JPH0787672B2 (en) | 1982-02-22 | 1982-02-22 | Power monitor control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0787672B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS594928B2 (en) * | 1977-08-17 | 1984-02-01 | 日本電気株式会社 | power supply |
| JPS5627710U (en) * | 1979-08-09 | 1981-03-14 |
-
1982
- 1982-02-22 JP JP57025970A patent/JPH0787672B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58144532A (en) | 1983-08-27 |
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