JPS6154828A - Memory backup device - Google Patents
Memory backup deviceInfo
- Publication number
- JPS6154828A JPS6154828A JP59177043A JP17704384A JPS6154828A JP S6154828 A JPS6154828 A JP S6154828A JP 59177043 A JP59177043 A JP 59177043A JP 17704384 A JP17704384 A JP 17704384A JP S6154828 A JPS6154828 A JP S6154828A
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- power supply
- circuit
- memory
- voltage
- 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.)
- Pending
Links
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Power Sources (AREA)
- Static Random-Access Memory (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
ｒ技術分野］
本発明は、バックアップ用蓄電池を具備したメモリーバ
ックアップ装置に関するものである。[Detailed Description of the Invention] Technical Field] The present invention relates to a memory backup device equipped with a backup storage battery.
［背景技術］
従来、シーケンス制御装置のプログラムメモリーのデー
タを停電時において保障するようにしたこの種のメモリ
ーバックアップ装置のバックアップ可能時間は内蔵され
ているバックアップ用蓄電゛池の容量によって決定され
るようになっており、バックアップ可能時間を長くして
バックアップ成能を強化するには蓄電池を大容量化する
必要があった。しかしながら、従未例にあっては全体形
状、コストの制約から蓄電池をあまり大容量にすること
ができなかったので、長期のバックアップが必要な場合
には問題であった。[Background Art] Conventionally, the backup possible time of this type of memory backup device, which guarantees data in the program memory of a sequence control device in the event of a power outage, is determined by the capacity of the built-in backup storage battery. Therefore, it was necessary to increase the capacity of the storage battery in order to extend the backup time and strengthen the backup performance. However, in the prior art, it was not possible to increase the capacity of the storage battery due to overall shape and cost constraints, which was a problem when long-term backup was required.
［発明の目的］
本発明は上記の点に鑑みて為されたものであり、その目
的とするところは、必要に応じてバックアップは能を強
化することができる小形で低価格のメモリーバックアッ
プ装置を提供することにある。[Object of the Invention] The present invention has been made in view of the above points, and its purpose is to provide a small and low-cost memory backup device that can enhance backup performance as needed. It is about providing.
［発明の開示］
（実施例）
添付図は本発明一実施例を示すものであり、商用電源を
整流平滑して回路電源を形成する直流電源回路１と、直
流電源回路１出力にて充電されるキャパシタよりなる内
穂蓄電ａ２とを具備し、直流電源回路１出力および内蔵
蓄電池２電圧をそれぞれ逆流阻止用ダイオード３．４を
介してメモリー回路５の電源端子に印加して成るメモリ
ーバックアップ装置において、外部蓄電池６の接続端子
７ａ、７ｂを設けるとともに、外部蓄電池６電圧を逆流
阻止用ダイオード８を介してメモリー回路５の電源端子
に印加するようにしたものであり、内蔵蓄電池またるキ
ャパシタはダイオードＤ０および抵抗Ｒ０を介して充電
されるようになっている。[Disclosure of the Invention] (Embodiment) The attached diagram shows an embodiment of the present invention, which includes a DC power supply circuit 1 that rectifies and smoothes a commercial power supply to form a circuit power supply, and a DC power supply circuit 1 that is charged by the output of the DC power supply circuit 1. In the memory backup device, the output of the DC power supply circuit and the voltage of the built-in storage battery are applied to the power supply terminal of the memory circuit 5 through the reverse current blocking diode 3.4, respectively. , connection terminals 7a and 7b for the external storage battery 6 are provided, and the voltage of the external storage battery 6 is applied to the power supply terminal of the memory circuit 5 via the reverse current blocking diode 8, and the capacitor across the built-in storage battery is a diode. It is designed to be charged via D0 and resistor R0.
バックアップ電圧不足の表示回路１０は逆流阻止用ダイ
オードＤ、％Ｄ２、コンパレータＣＰ、発光ダイオード
ＬＤおよび抵抗Ｒ１〜Ｒ３にて形成されており、ダイオ
ードＤ、％Ｄ２を介し゛て検出される両蓄電池２．６の
電圧のいずれかが抵抗Ｒ３、Ｒ４にて設定される基準電
圧よりも低い場合に発光ダイオードＬＤを点灯して所定
のバックアンプ機能が得られないことを表示するように
なっている。The backup voltage insufficient display circuit 10 is formed by a reverse current blocking diode D, %D2, a comparator CP, a light emitting diode LD, and resistors R1 to R3. When any of the voltages of .6 is lower than the reference voltage set by the resistors R3 and R4, the light emitting diode LD is turned on to indicate that the predetermined back amplifier function cannot be obtained.
以下、実施例の動作について説明する。いま、外部蓄電
池６が接＃１されておらず内ａ蓄電池２だけの場合、内
Ｊｌ電ａ２の充電はダイオードＤ０および抵抗Ｒ０を介
して行なわれるとともに、メモリー回路５への電源供給
はダイオード３を介して行なわれている。ここに、商用
電源の停電が発生して直流電源回路１出力がなくなると
、メモリー回路５への電源供給はダイオード４を介して
内蔵蓄電池２から行なわれ、内蔵蓄電池２の容量に比例
しメモリー回路５の消費電力に逆比例する一定時間だけ
メモリー回路５がバックアップされメモリー内容が保障
されるようになっている。次に、停電が長くなって内蔵
蓄電池２の電圧が基準電圧以下になった場合には、停電
が復旧して内蔵蓄電池２の電圧が基準電圧以上に充電さ
れるまで、コンパレータＱＰ出力が″Ｌ″レベルになっ
て発光ダイオードＬＤが点灯することにより所定のバッ
クアンプ機能が得られないことを表示するようになって
いる。したがって、発光ダイオードＬＤの、α灯の有無
によって所定のバックアンプ機能が得られるかどうかが
直観的に把握できるようになっている
一方、接続端子７ｍ、７ｂに外部蓄電池６を接続した場
合、商用電源の停電時においてメモリー回路５への電源
供給はダイオード４．８を介して両蓄電池２．６がら行
なわれ、外部蓄電池６の容量だけバックアップ可能時間
が長くなり、適当な容量の外部蓄電池６を接続すること
によりバックアンプ機能の強化が寥易に行えることにな
る。なお、バックアップ電圧（外部蓄電池６の電圧）の
監視はダイオードＤ２を介して行なわれる。The operation of the embodiment will be described below. Now, when the external storage battery 6 is not connected and only the internal a storage battery 2 is connected, the internal Jl battery a2 is charged via the diode D0 and the resistor R0, and power is supplied to the memory circuit 5 through the diode 3. It is done through. When a commercial power outage occurs and the output of the DC power supply circuit 1 disappears, power is supplied to the memory circuit 5 from the built-in storage battery 2 via the diode 4, and the power is supplied to the memory circuit 5 in proportion to the capacity of the built-in storage battery 2. The memory circuit 5 is backed up for a certain period of time which is inversely proportional to the power consumption of the memory circuit 5 to guarantee the memory contents. Next, if the power outage gets longer and the voltage of the built-in storage battery 2 drops below the reference voltage, the comparator QP output will remain low until the power outage is restored and the voltage of the built-in storage battery 2 is charged above the reference voltage. '' level and the light emitting diode LD lights up to indicate that the predetermined back amplifier function cannot be obtained. Therefore, it is possible to intuitively understand whether a predetermined back amplifier function can be obtained depending on the presence or absence of the alpha lamp of the light emitting diode LD.However, if the external storage battery 6 is connected to the connection terminals 7m and 7b, In the event of a power outage, power is supplied to the memory circuit 5 from both storage batteries 2.6 via the diode 4.8, and the backup available time is extended by the capacity of the external storage battery 6, and the external storage battery 6 of an appropriate capacity is used. By connecting it, you can easily strengthen the back amplifier function. Note that monitoring of the backup voltage (voltage of external storage battery 6) is performed via diode D2.
［発明の効果］
本発明は上述のように、商用電源を整流平滑して回路電
源を形成する直流電源回路と、直流電源回路出力にて充
電される内蔵蓄電池とを具備し、直流電源回路出力およ
び内蔵蓄電ａ電圧をそれぞれ逆流阻止用ダイオードを介
してメモリー回路の電源端子に印加して成るメモリーバ
ックアップ装置において、外部蓄電池の接続端子を設け
るとともに、外部蓄電池電圧を逆流阻止用ダイオードを
介してメモリー回路の電源端子に印加するようにしたも
のであるので、必要に応じて接続端子に適当な容量の外
部蓄電池を接続することによりバックアンプ機能を容易
に強化することができ、また内蔵蓄電池の容量を必要最
小限に設定できるので、小形で低価格のメモリーバック
アップ装置を提供できるという効果がある。[Effects of the Invention] As described above, the present invention includes a DC power supply circuit that rectifies and smoothes a commercial power supply to form a circuit power supply, and a built-in storage battery that is charged by the DC power supply circuit output. In a memory backup device in which a built-in storage battery a voltage is applied to a power supply terminal of a memory circuit via a backflow blocking diode, a connection terminal for an external storage battery is provided, and the external storage battery voltage is applied to a memory circuit via a backflow blocking diode. Since the voltage is applied to the power supply terminal of the circuit, the back amplifier function can be easily strengthened by connecting an external storage battery of an appropriate capacity to the connection terminal as necessary, and the capacity of the built-in storage battery can be easily strengthened. can be set to the necessary minimum, which has the effect of providing a compact and low-cost memory backup device.
添付図は本発明一実施例の回路図であり、１は直流電源
回路、２は内′ａＭ電池、３．４はダイオード、５はメ
モリー回路、６は外部蓄電池、７ａ。
７ｂは接続端子、８はダイオードである。The attached figure is a circuit diagram of an embodiment of the present invention, in which 1 is a DC power supply circuit, 2 is an internal battery, 3.4 is a diode, 5 is a memory circuit, 6 is an external storage battery, and 7a. 7b is a connection terminal, and 8 is a diode.
Claims (1)
電源回路と、直流電源回路出力にて充電される内蔵蓄電
池とを具備し、直流電源回路出力および内蔵蓄電池電圧
をそれぞれ逆流阻止用ダイオードを介してメモリー回路
の電源端子に印加して成るメモリーバックアップ装置に
おいて、外部蓄電池の接続端子を設けるとともに、外部
蓄電池電圧を逆流阻止用ダイオードを介してメモリー回
路の電源端子に印加するようにしたことを特徴とするメ
モリーバックアップ装置。(1) Equipped with a DC power supply circuit that rectifies and smoothes commercial power to form a circuit power supply, and a built-in storage battery that is charged by the output of the DC power supply circuit. In a memory backup device in which voltage is applied to a power terminal of a memory circuit through a reverse current blocking diode, a connection terminal for an external storage battery is provided, and the voltage of the external storage battery is applied to the power terminal of the memory circuit through a reverse current blocking diode. A memory backup device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59177043A JPS6154828A (en) | 1984-08-25 | 1984-08-25 | Memory backup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59177043A JPS6154828A (en) | 1984-08-25 | 1984-08-25 | Memory backup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6154828A true JPS6154828A (en) | 1986-03-19 |
Family
ID=16024137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59177043A Pending JPS6154828A (en) | 1984-08-25 | 1984-08-25 | Memory backup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6154828A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64897U (en) * | 1987-06-19 | 1989-01-05 | ||
| JP2008079438A (en) * | 2006-09-21 | 2008-04-03 | Fuji Electric Fa Components & Systems Co Ltd | Programmable controller and its data backup method |
-
1984
- 1984-08-25 JP JP59177043A patent/JPS6154828A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64897U (en) * | 1987-06-19 | 1989-01-05 | ||
| JP2008079438A (en) * | 2006-09-21 | 2008-04-03 | Fuji Electric Fa Components & Systems Co Ltd | Programmable controller and its data backup method |
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