JPH02241319A - Power supply protective control system - Google Patents
Power supply protective control systemInfo
- Publication number
- JPH02241319A JPH02241319A JP1060478A JP6047889A JPH02241319A JP H02241319 A JPH02241319 A JP H02241319A JP 1060478 A JP1060478 A JP 1060478A JP 6047889 A JP6047889 A JP 6047889A JP H02241319 A JPH02241319 A JP H02241319A
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- 230000001681 protective effect Effects 0.000 title 1
- 230000010365 information processing Effects 0.000 claims abstract description 22
- 230000005856 abnormality Effects 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- CXVGEDCSTKKODG-UHFFFAOYSA-N sulisobenzone Chemical compound C1=C(S(O)(=O)=O)C(OC)=CC(O)=C1C(=O)C1=CC=CC=C1 CXVGEDCSTKKODG-UHFFFAOYSA-N 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
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- Control Of Voltage And Current In General (AREA)
- Power Sources (AREA)
Abstract
Description
【発明の詳細な説明】
〔目次〕
概要
産業上の利用分野
従来の技術
発明が解決しようとする課題
課題を解決するための手段（第１図）
作用
実施例（第２図）
発明の効果
〔概要〕
本発明は電源保護制御方式に関し、
情報処理装置の電源部の出力電圧の低下において、電源
部の異常の場合には直ちに電源の切断処理を行うものの
、電源供給部の入力電圧低下による場合には、電源の切
断処理を遅らせることの出来る電源保護制御方式を提供
することを目的とし、情報処理装置の電源保護制御方式
において、ＡＣ入力電圧の低下検出信号に応じて出力を
生ずるＡＣ状態検知手段と、第１の閾値電圧で動作する
第１の電圧比較手段と、第１の閾値電圧より低い第２の
閾値電圧で動作する第２の電圧比較手段を設け、ＡＣ側
の異常を検出した場合に、前記ＡＣ状態検知手段により
前記第１の電圧比較手段の出力を制′４Ｂシ、第２の閾
値電圧に応じて電源の切断処理を行うことを特徴とする
。[Detailed description of the invention] [Table of contents] Overview Industrial field of application Conventional technology Problems to be solved by the invention Means for solving the problems (Fig. 1) Working examples (Fig. 2) Effects of the invention [ [Summary] The present invention relates to a power supply protection control method, and the present invention relates to a power supply protection control method, in which when the output voltage of the power supply unit of an information processing device decreases, if there is an abnormality in the power supply unit, the power is immediately cut off, but if the input voltage of the power supply unit decreases, the power supply is immediately disconnected. The purpose of the present invention is to provide a power protection control method that can delay power-off processing, and in the power protection control method for information processing equipment, an AC state detection method that generates an output in response to a drop detection signal of AC input voltage is used. means, a first voltage comparison means that operates at a first threshold voltage, and a second voltage comparison means that operates at a second threshold voltage lower than the first threshold voltage, and detects an abnormality on the AC side. In this case, the AC state detection means controls the output of the first voltage comparison means, and the power supply is cut off according to the second threshold voltage.
本発明は電源保護制御方式に係り、特に情報処理装置の
電源部において、電源供給部の入力電圧低下による出力
電圧の低下が起った時に、電源の切断処理を遅らせて、
情報処理装置の動作時間を延長することが出来る電源保
護制御方式に関する。The present invention relates to a power protection control method, and particularly, in a power supply unit of an information processing device, when the output voltage decreases due to a decrease in the input voltage of the power supply unit, the power supply cut-off process is delayed.
The present invention relates to a power protection control method that can extend the operating time of an information processing device.
コンピュータ等の情報処理装置の電源部においては、外
部より電源部に入力したＡＣ入力電圧は該電源部で変圧
・整流され、所定の値のＤＣ電圧として中央処理装置等
の情報処理部に出力される。In a power supply unit of an information processing device such as a computer, an AC input voltage input to the power supply unit from the outside is transformed and rectified in the power supply unit, and is output as a DC voltage of a predetermined value to the information processing unit such as a central processing unit. Ru.
そして、電源部から出力されるＤＣ出力電圧は常時、電
圧監視を受け、この電圧が閾値電圧より低くなると、電
源部の異常として電源部の切断処理を行う。Then, the DC output voltage output from the power supply unit is constantly monitored, and when this voltage becomes lower than the threshold voltage, it is determined that the power supply unit is abnormal and the power supply unit is disconnected.
これは一般に、情報処理装置の電源部に異常状態が発生
したとき、放置すると電源部の破損等、重大な結果を招
くので、−刻も早く電源切断処理を行って電源部の保護
を図るとともに、次段以下の情報処理部への悪影響を防
ぐ必要があることによる。In general, when an abnormal condition occurs in the power supply section of an information processing device, if left unattended, serious consequences such as damage to the power supply section will result. This is due to the need to prevent adverse effects on the information processing units in the next stage and below.
ところで、電源部の出力電圧の低下は、電源供給部の異
常、例えば停電や電源部に対するＡＣ入力電圧の低下の
場合でも発生する。Incidentally, a drop in the output voltage of the power supply section also occurs when there is an abnormality in the power supply section, such as a power outage or a drop in the AC input voltage to the power supply section.
しかしながら従来、電源部はＤＣ出力電圧の低下を検出
すると、直ちに電源部の異常と判断して、電源の切断処
理を行っていた。Conventionally, however, when a power supply section detects a drop in the DC output voltage, it immediately determines that there is an abnormality in the power supply section and performs a process of cutting off the power supply.
〔発明が解決しようとする課題］
ところが、停電等の外部の電源供給部の異常に起因する
電源部の出力電圧の低下の場合には、電源部自体に異常
はな（、次段以下の情報処理部の異常も勿論ないので、
情報処理部の動作の停止はなるべく避けたい。[Problem to be solved by the invention] However, in the case of a drop in the output voltage of the power supply unit due to an abnormality in the external power supply unit such as a power outage, there is no abnormality in the power supply unit itself (the information in the following stages) Of course there is no abnormality in the processing section, so
It is desirable to avoid stopping the operation of the information processing unit as much as possible.
しかも外部要因による電圧低下は瞬時故障が多く、ＡＣ
電力供給回路網における遮断器の再投入により電源部の
出力電圧の回復が得られることが多い。Moreover, voltage drops caused by external factors often cause instantaneous failures, and AC
Restoration of the output voltage of the power supply is often achieved by cycling the circuit breaker in the power supply network.
一方、情報処理装置の情報処理部においては、−変電源
を切断後、再投入すると、初期設定等、再立上げ動作に
時間がかかり、情報処理装置にとって損失が多い。On the other hand, in an information processing unit of an information processing device, when the transformer power source is turned off and then turned on again, restarting operations such as initial settings take time, resulting in a lot of loss for the information processing device.
従って、本発明の目的は、情報処理装置の電源部の出力
電圧の低下において、電源部の異常の場合には早急に電
源の切断処理を行うものの、停電等の電源供給部の入力
端子低下による場合には、電源の切断処理を遅らせるこ
との出来る電源保護制御方式を提供する、ものである。Therefore, an object of the present invention is to promptly cut off the power when the output voltage of the power supply unit of an information processing device decreases in the event of an abnormality in the power supply unit, but due to a drop in the input terminal of the power supply unit due to a power outage, etc. In some cases, the present invention provides a power protection control method that can delay the power-off process.
上記目的を達成するため、本発明では、電源部にそれぞ
れ異なる閾値電圧を有する２つの比較器を設けて出力電
圧を監視し、停電時には通常の電源異常の場合よりも低
レベルの閾値電圧で、電源の切断処理を行うものである
。In order to achieve the above object, in the present invention, two comparators each having a different threshold voltage are provided in the power supply section to monitor the output voltage. This is to perform the power-off process.
第１図は本発明の原理図であり、第１図（ａ）は本発明
の原理構成図、第１図（ｂ）は前記第１図（ａ）の動作
説明図である。FIG. 1 is a diagram showing the principle of the present invention, FIG. 1(a) is a diagram of the principle configuration of the present invention, and FIG. 1(b) is an explanatory diagram of the operation of FIG. 1(a).
第１図（ａ）において、１は停電検出信号が入力するイ
ンバータであって、通常は「１」、停電検出時には「０
」を出力する。２は高レベルの閾値電圧ＶｌｌｖＡ＋（
ＵＶＡ：ｕｎｄｅｒ ｖｏｌｔａｇｅ Ａｌａｒｍ
）（第１図（ｂ）参照）で動作する比較器であって、電
源部の出力電圧がＶ ｕＶＡＩ以下になると「１」をア
ンド回路４に出力する。In FIG. 1(a), 1 is the inverter to which the power outage detection signal is input, which is normally "1" and "0" when a power outage is detected.
" is output. 2 is the high level threshold voltage VllvA+(
UVA:under voltage alarm
) (see FIG. 1(b)), and outputs "1" to the AND circuit 4 when the output voltage of the power supply section becomes less than V uVAI.
３は前記閾値電圧Ｖ ｕｌＴＡＩよりも低レベルの閾値
電圧■ＵｖＡ□（第１図（ｂ）参照）で動作する比較器
であって、電源部の出力電圧が■ＵｖＡ！以下になると
、「１」をオア回路５１に出力する。3 is a comparator that operates at a threshold voltage ■UvA□ (see FIG. 1(b)) lower than the threshold voltage VulTAI, and the output voltage of the power supply section is ■UvA! When the value is below, "1" is output to the OR circuit 51.
第１図（ｂ）に示す如く、時刻ＬＯにおいて、停電が発
生した場合、電源部の出力電圧はその内部の整流平滑コ
ンデンサでＡＣ入力電圧の半サイクル分だけ保障され時
刻ｔ１以後曲線Ａで示す如き出力電圧の低下が起きる。As shown in Fig. 1(b), if a power outage occurs at time LO, the output voltage of the power supply section is guaranteed for half a cycle of the AC input voltage by the internal rectifying and smoothing capacitor, and after time t1, it is shown by curve A. A drop in the output voltage occurs.
停電発生と同時に停電検出信号「１」が伝達されるので
、インバータ１は「０」をアンド回路４に出力する。従
って、比較器２の出力する値に拘らず、アンド回路４は
「０」をオア回路５に出力する。Since the power failure detection signal "1" is transmitted at the same time as the power failure occurs, the inverter 1 outputs "0" to the AND circuit 4. Therefore, regardless of the value output by the comparator 2, the AND circuit 4 outputs "0" to the OR circuit 5.
出力電圧が閾値電圧Ｖ ｔｌｌ／ＡＺ以上の期の間は（
即ちｔ＜ｔ３）、比較器３は「０」を出力するので、オ
ア回路５は常に「０」を出力し、切断指示は与えない。During the period when the output voltage is equal to or higher than the threshold voltage Vtll/AZ, (
That is, when t<t3), the comparator 3 outputs "0", so the OR circuit 5 always outputs "0" and does not issue a disconnection instruction.
しかし、出力電圧が閾値電圧■ｕｖＡ□以下になると（
即ちＬ≧Ｌ３）比較器３はｒｌ、を出力し、オア回路５
はｒｌ、を出力し、電源の切断処理を指示する。However, when the output voltage becomes less than the threshold voltage ■uvA□ (
That is, L≧L3) The comparator 3 outputs rl, and the OR circuit 5
outputs rl, and instructs power-off processing.
一方、供給されるＡＣ電圧が正常の場合には、停電検出
信号は「０」になっているので、インバタ１はｒｌ、を
アンド回路４に出力する。従って、電源部の異常により
出力電圧が閾値電圧Ｖ ｕｗＡ１以下になると、比較器
２が「１」をアンド回路４に出力するため、アンド回路
は「１」を出力し、オア回路５は「１」を出力し、電源
に切断処理を指示する。On the other hand, when the supplied AC voltage is normal, the power failure detection signal is "0", so the inverter 1 outputs rl to the AND circuit 4. Therefore, when the output voltage becomes lower than the threshold voltage VuwA1 due to an abnormality in the power supply section, the comparator 2 outputs "1" to the AND circuit 4, the AND circuit outputs "1", and the OR circuit 5 outputs "1". ” and instructs the power supply to perform the disconnection process.
このように、停電でないとき電源部の出力電圧が低下す
ると閾値電圧Ｖ 、ｖ４＋で電源の切断が指示されるが
、停電等の外部要因による入力電圧の低下が検出された
場合には、出力電圧が上記閾値電圧■。ｖＡＩより低い
閾値電圧部Ｖ ＩＩＶＡ□以下になるまで電源の切断は
指示されず、情報処理装置の動作時間は延長する。In this way, when the output voltage of the power supply section decreases when there is no power outage, the threshold voltage V, v4+ instructs to turn off the power supply, but if a decrease in the input voltage due to an external factor such as a power outage is detected, the output voltage is the above threshold voltage ■. The power-off is not instructed until the threshold voltage V IIVA□ lower than vAI is reached, and the operating time of the information processing device is extended.
本発明の一実施例を第２図について説明する。 An embodiment of the present invention will be described with reference to FIG.
第２図は本発明の一実施例の構成説明図である。FIG. 2 is an explanatory diagram of the configuration of an embodiment of the present invention.
第２図において、第１図と同一符号は同一部分を示す。In FIG. 2, the same symbols as in FIG. 1 indicate the same parts.
同図において、■はインバータ、２は閾値電圧Ｖ ｍＷ
ＡＩで動作する比較器、３は前記閾値電圧Ｖ ｍｖＡｌ
より低レベルの閾値電圧ＶＵＶＡ２で動作する比較器、
４はアンド回路、５はオア回路、６は電源保護制御部、
７は停電検出部、８は電源部、９は出力電圧監視部、１
０は情報処理部を示す。In the same figure, ■ is an inverter, 2 is a threshold voltage V mW
A comparator operated by AI, 3 is the threshold voltage V mvAl
a comparator operating at a lower level threshold voltage VUVA2;
4 is an AND circuit, 5 is an OR circuit, 6 is a power protection control section,
7 is a power failure detection section, 8 is a power supply section, 9 is an output voltage monitoring section, 1
0 indicates an information processing section.
図示省略した外部の電源供給部から人力するＡＣ入力電
圧は、電源部８に入力するが、このとき停電検出部７は
、電源保護制御部６のインバータ１に停電検出信号を、
正常時には「０」、停電時には「ｌ」を送出する。The AC input voltage manually supplied from an external power supply unit (not shown) is input to the power supply unit 8. At this time, the power failure detection unit 7 sends a power failure detection signal to the inverter 1 of the power protection control unit 6.
It sends "0" during normal operation and "l" during power outage.
また電源部８から出力するＤＣ出力電圧は情報処理部１
０に出力するが、出力電圧監視部９でその出力を電圧の
大きさを検出して、これを電源保護制御部６の比較器２
、比較器３に出力する。Further, the DC output voltage output from the power supply unit 8 is
0, but the output voltage monitoring unit 9 detects the voltage level of the output and outputs it to the comparator 2 of the power protection control unit 6.
, is output to comparator 3.
もし停電が発生した場合、停電検出部７は「１」を出力
し、インバータ１は、「０」を出力するので、アンド回
路４はオフ状態となり、アンド回路４はオア回路５に「
０」を送出する。この停電により電源部８の出力電圧が
第１図（ｂ）に示す曲線Ａに沿って低下し、閾値電圧Ｖ
ｕｖａｚ以下（第１図（ｂ）のｔ≧ｔ３）になった時、
比較器３は動作し「１」をオア回路５に出力し、オア回
路５は電源部８に対して切断を指示する。If a power outage occurs, the power outage detection unit 7 outputs "1" and the inverter 1 outputs "0", so the AND circuit 4 is turned off, and the AND circuit 4 outputs "1" to the OR circuit 5.
0" is sent. Due to this power outage, the output voltage of the power supply unit 8 decreases along the curve A shown in FIG. 1(b), and the threshold voltage V
When it becomes below uvaz (t≧t3 in Figure 1(b)),
The comparator 3 operates and outputs "1" to the OR circuit 5, and the OR circuit 5 instructs the power supply unit 8 to disconnect.
一方、給電されるＡＣが正常の時にはインバタ１を通過
した停電検出信号は常に「１」をアンド回路４に出力す
るので、電源部８の異常等により出力電圧の低下が生じ
た場合、出力電圧が前記ＶＬＩＶ□より高レベルの閾値
電圧Ｖ ｕＶＡｌ以下になると（第１図（ｂ）のｔ＞ｔ
ｚ）、比較器２が動作し、ｒｌ、をアンド回路４に入力
するため、オア回路５は「１」を出力し、電源部８に切
断処理を指示する。On the other hand, when the supplied AC is normal, the power failure detection signal that has passed through the inverter 1 always outputs "1" to the AND circuit 4, so if the output voltage decreases due to an abnormality in the power supply section 8, etc., the output voltage becomes lower than the threshold voltage V uVAl, which is higher than the VLIV□ (t>t in FIG. 1(b)).
z), the comparator 2 operates and inputs rl to the AND circuit 4, so the OR circuit 5 outputs "1" and instructs the power supply section 8 to perform a disconnection process.
このように停電等の外部要因のない出力電圧の低下に対
しては、出力電圧が比較的高レベルの閾値電圧Ｖ ｕｖ
Ａｌ以下になると電源を切断するが、停電等の外部要因
による入力端子の低下の場合には、出力電圧が上記閾値
電圧Ｖ ＬＩＶＡＺ以下になるまで切断処理が指示され
ない。従って情報処理部の動作時間が延長されるととも
に、停電発生後、第１図（ｂ）の曲線Ｂに示す如く、瞬
断復旧する場合も多いので、情報処理部１０を効率的に
使用することができる。In this way, when the output voltage decreases due to no external factors such as a power outage, the output voltage is set to a relatively high threshold voltage V uv
When the voltage falls below Al, the power is cut off, but in the case of a drop in the input terminal due to an external factor such as a power outage, the cutting process is not instructed until the output voltage falls below the threshold voltage VLIVAZ. Therefore, the operating time of the information processing section 10 is extended, and after a power outage, there are many cases where the power is restored instantaneously, as shown by curve B in FIG. 1(b), so the information processing section 10 can be used efficiently. I can do it.
本発明によれば、情報処理装置の電源部の出力電圧をそ
れぞれ異なる閾値電圧を有する２つの比較器で監視する
ことにより、電源部の異常による出力電圧の低下には高
い閾値電圧で電源切断処理を行い、情報処理部への影響
を最少限にとどめることが出来る。一方、停電等の電源
供給源の異常による出力電圧の低下には、電源の切断処
理を遅らせることによって装置の動作時間を延長するこ
とが出来るとともに、瞬断に対しては電源部をオフにし
ないので、情報処理部を非常に有効的に使用することが
できる。According to the present invention, by monitoring the output voltage of the power supply unit of an information processing device using two comparators each having a different threshold voltage, a power-off process is performed using a high threshold voltage when the output voltage decreases due to an abnormality in the power supply unit. The impact on the information processing unit can be kept to a minimum. On the other hand, when the output voltage drops due to an abnormality in the power supply source such as a power outage, the operating time of the device can be extended by delaying the power cut process, and the power supply section does not turn off in the event of a momentary power outage. Therefore, the information processing section can be used very effectively.
５−オア回路、 ６−電源保護制御部、 ７−・−停電検出部、 ８−電源部、 ９−・−出力電圧監視部、 １０−情報処理部。5-OR circuit, 6-power protection control unit; 7-・-Power failure detection unit, 8-power supply section, 9--output voltage monitoring section, 10-Information processing section.
Claims (1)
圧の低下検出信号に応じて出力を生ずるＡＣ状態検知手
段（１）と、 第１の閾値電圧で動作する第１の電圧比較手段（２）と
、 第１の閾値電圧より低い第２の閾値電圧で動作する第２
の電圧比較手段（３）を設け、 ＡＣ側の異常を検出した場合に、前記ＡＣ状態検知手段
（１）により前記第１の電圧比較手段（２）の出力を制
御し、第２の閾値電圧に応じて電源の切断処理を行うこ
とを特徴とする電源保護制御方式。[Scope of Claims] A power protection control system for an information processing device, comprising: AC state detection means (1) that produces an output in response to a detection signal of a drop in AC input voltage; and a first voltage that operates at a first threshold voltage. a second threshold voltage operating at a second threshold voltage lower than the first threshold voltage;
A voltage comparing means (3) is provided, and when an abnormality on the AC side is detected, the output of the first voltage comparing means (2) is controlled by the AC state detecting means (1), and a second threshold voltage is set. A power protection control method characterized by cutting off the power depending on the situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1060478A JPH02241319A (en) | 1989-03-13 | 1989-03-13 | Power supply protective control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1060478A JPH02241319A (en) | 1989-03-13 | 1989-03-13 | Power supply protective control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02241319A true JPH02241319A (en) | 1990-09-26 |
Family
ID=13143423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1060478A Pending JPH02241319A (en) | 1989-03-13 | 1989-03-13 | Power supply protective control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02241319A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0661714A1 (en) * | 1993-12-31 | 1995-07-05 | STMicroelectronics S.r.l. | Circuit device and corresponding method for resetting non-volatile and electrically programmable memory devices |
| JP2014206901A (en) * | 2013-04-15 | 2014-10-30 | ローム株式会社 | Power supply circuit |
| WO2017059706A1 (en) * | 2015-10-10 | 2017-04-13 | 中兴通讯股份有限公司 | Power source dormancy and wakeup circuit |
-
1989
- 1989-03-13 JP JP1060478A patent/JPH02241319A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0661714A1 (en) * | 1993-12-31 | 1995-07-05 | STMicroelectronics S.r.l. | Circuit device and corresponding method for resetting non-volatile and electrically programmable memory devices |
| US5586077A (en) * | 1993-12-31 | 1996-12-17 | Sgs-Thomson Microelectronics S.R.L. | Circuit device and corresponding method for resetting non-volatile and electrically programmable memory devices |
| JP2014206901A (en) * | 2013-04-15 | 2014-10-30 | ローム株式会社 | Power supply circuit |
| WO2017059706A1 (en) * | 2015-10-10 | 2017-04-13 | 中兴通讯股份有限公司 | Power source dormancy and wakeup circuit |
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