JPS61140974U - - Google Patents
Info
- Publication number
- JPS61140974U JPS61140974U JP2502685U JP2502685U JPS61140974U JP S61140974 U JPS61140974 U JP S61140974U JP 2502685 U JP2502685 U JP 2502685U JP 2502685 U JP2502685 U JP 2502685U JP S61140974 U JPS61140974 U JP S61140974U
- Authority
- JP
- Japan
- Prior art keywords
- voltage fluctuation
- fluctuation detection
- signal
- gain
- detection level
- 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 11
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本発明の実施例を示すブロツク図であ
る。第２図は第１図基準補正回路の詳細を示す。
第３図は基準補正回路における電圧変動検出レベ
ルと直流ゲインの関係を示すグラフである。第４
図は既提案の電圧変動率検出装置を示す。
１……２乗検波器、２……ローパスフイルター
、３，３′……比較積分形比較器、４……正、負
ゲイン補正絶対値回路、４′……絶対値回路、５
，５′……電圧変動検出レベル設定器、６……比
較器、８……基準補正回路、９……抵抗器、１０
……演算増幅器、１１……接点。
FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 shows details of the reference correction circuit of FIG. 1.
FIG. 3 is a graph showing the relationship between voltage fluctuation detection level and DC gain in the reference correction circuit. Fourth
The figure shows a previously proposed voltage fluctuation rate detection device. 1... Square law detector, 2... Low pass filter, 3, 3'... Comparison-integral type comparator, 4... Positive and negative gain correction absolute value circuit, 4'... Absolute value circuit, 5
, 5'... Voltage fluctuation detection level setter, 6... Comparator, 8... Reference correction circuit, 9... Resistor, 10
...Operation amplifier, 11...Contact.
Claims (1)
前記直流信号をローパスフイルターを通過させた
電圧変動検出用基準信号とを比例積分形比較器で
比較し、前記比例積分形比較器による比較結果を
絶対値回路に入力し、前記絶対値回路の出力信号
を電圧変動検出レベルと比較する電圧変動率検出
装置において、ローパスフイルターの出力側と比
例積分形比較器の入力側との間にゲインの切換が
できる基準補正回路を接続し、前記ローパスフイ
ルターの出力側に接続された電圧変動検出レベル
設定器における電圧変動検出レベルの切換に従つ
て前記基準補正回路のゲインを切換え、電圧変動
検出レベルごとに、電圧変動検出用基準信号を補
正した電圧変動率検出装置。 A DC signal obtained by converting an AC voltage using a square-law detector and a voltage fluctuation detection reference signal obtained by passing the DC signal through a low-pass filter are compared by a proportional-integral comparator, and the comparison result by the proportional-integral comparator is In a voltage fluctuation rate detection device that inputs the signal to an absolute value circuit and compares the output signal of the absolute value circuit with the voltage fluctuation detection level, a gain is connected between the output side of the low-pass filter and the input side of the proportional-integral comparator. A switchable reference correction circuit is connected, and the gain of the reference correction circuit is switched according to the switching of the voltage fluctuation detection level in the voltage fluctuation detection level setter connected to the output side of the low-pass filter, and the gain of the reference correction circuit is changed for each voltage fluctuation detection level. and a voltage fluctuation rate detection device that corrects a reference signal for voltage fluctuation detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2502685U JPS61140974U (en) | 1985-02-23 | 1985-02-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2502685U JPS61140974U (en) | 1985-02-23 | 1985-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61140974U true JPS61140974U (en) | 1986-09-01 |
Family
ID=30519730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2502685U Pending JPS61140974U (en) | 1985-02-23 | 1985-02-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61140974U (en) |
-
1985
- 1985-02-23 JP JP2502685U patent/JPS61140974U/ja active Pending