JPH0299422U - - Google Patents
Info
- Publication number
- JPH0299422U JPH0299422U JP530189U JP530189U JPH0299422U JP H0299422 U JPH0299422 U JP H0299422U JP 530189 U JP530189 U JP 530189U JP 530189 U JP530189 U JP 530189U JP H0299422 U JPH0299422 U JP H0299422U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- detection means
- voltage
- cpu
- 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
- 238000001514 detection method Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Landscapes
- Power Sources (AREA)
Description
第１図は本考案に係る停電検出装置の実施例を
示すブロツク回路図、第２図は、同装置の通電時
処理動作を示すフローチヤート、第３図は同装置
の通電から停電までの各信号を示すタイミングチ
ヤート、第４図は同装置の停電時処理動作を示す
フローチヤート、第５図は同装置の停電復帰から
断電までの各信号を示すタイミングチヤート、第
６図ａ，ｂは他の実施例における通電時処理動作
を示すフローチヤート、第７図は従来例を示すブ
ロツク回路図、第８図は第７図において停電発生
からのシステム電圧値を示す図、第９図は他の従
来例を示すブロツク回路図である。
符号の説明、１……整流回路、２……分圧回路
、３……電圧検出回路（電圧検出手段）、４……
ＩＣ（ボルテージコンパレータ）、５……Ｒ−Ｓ
フリツプフロツプ回路（二安定マルチバイブレー
タ）、６……ＣＰＵ。
Fig. 1 is a block circuit diagram showing an embodiment of the power outage detection device according to the present invention, Fig. 2 is a flowchart showing the processing operation of the device during energization, and Fig. 3 is a flowchart showing the process from energization to power outage of the device. Fig. 4 is a flowchart showing the processing operation of the device during a power outage, Fig. 5 is a timing chart showing each signal of the device from recovery from power outage to power outage, and Fig. 6 a, b is a timing chart showing the signals. A flowchart showing the processing operation when power is applied in another embodiment, FIG. 7 is a block circuit diagram showing the conventional example, FIG. 8 is a diagram showing the system voltage value after the occurrence of a power outage in FIG. 7, and FIG. FIG. 2 is a block circuit diagram showing a conventional example. Explanation of symbols, 1... Rectifier circuit, 2... Voltage dividing circuit, 3... Voltage detection circuit (voltage detection means), 4...
IC (voltage comparator), 5...R-S
Flip-flop circuit (bistable multivibrator), 6...CPU.
Claims (1)
と、この電圧検出手段からの出力信号に応じて停
電の検知を行なうとともに、装置全体の制御を行
なうＣＰＵとを備えた停電検出装置において、 上記電圧検出手段からの出力信号を、セツトお
よびリセツト入力を有する二安定マルチバイブレ
ータのセツト入力信号とし、この二安定マルチバ
イブレータから出力される停電信号を上記ＣＰＵ
に導入するとともに、このＣＰＵは所定時間ごと
に上記停電信号に応じた信号を上記二安定マルチ
バイブレータのリセツト入力に対して出力するこ
とを特徴とする停電検出装置。 (2) 電圧検出手段はトランス二次側出力を整流
して得られる出力電圧を分圧し、その分圧された
電圧値を検知することを特徴とする請求項第１項
記載の停電検出装置。[Scope of Claim for Utility Model Registration] (1) Voltage detection means for detecting the voltage value of the device's power supply, and a CPU that detects a power outage according to the output signal from the voltage detection means and controls the entire device. In the power failure detection device, the output signal from the voltage detection means is used as the set input signal of a bistable multivibrator having set and reset inputs, and the power failure signal output from the bistable multivibrator is sent to the CPU.
A power outage detection device characterized in that the CPU outputs a signal corresponding to the power outage signal to a reset input of the bistable multivibrator at predetermined time intervals. (2) The power failure detection device according to claim 1, wherein the voltage detection means divides the output voltage obtained by rectifying the output of the secondary side of the transformer, and detects the divided voltage value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP530189U JPH0299422U (en) | 1989-01-20 | 1989-01-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP530189U JPH0299422U (en) | 1989-01-20 | 1989-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0299422U true JPH0299422U (en) | 1990-08-08 |
Family
ID=31208559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP530189U Pending JPH0299422U (en) | 1989-01-20 | 1989-01-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0299422U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6143725B2 (en) * | 1977-03-14 | 1986-09-29 | Yokogawa Hokushin Electric |
-
1989
- 1989-01-20 JP JP530189U patent/JPH0299422U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6143725B2 (en) * | 1977-03-14 | 1986-09-29 | Yokogawa Hokushin Electric |
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