JPS5910091B2 - How to switch multiplexed sine wave oscillator - Google Patents
How to switch multiplexed sine wave oscillatorInfo
- Publication number
- JPS5910091B2 JPS5910091B2 JP54076870A JP7687079A JPS5910091B2 JP S5910091 B2 JPS5910091 B2 JP S5910091B2 JP 54076870 A JP54076870 A JP 54076870A JP 7687079 A JP7687079 A JP 7687079A JP S5910091 B2 JPS5910091 B2 JP S5910091B2
- Authority
- JP
- Japan
- Prior art keywords
- sine wave
- output
- oscillator
- wave oscillator
- comparator
- 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
Links
- 230000005856 abnormality Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Description
【発明の詳細な説明】
本発明は、特に検出器に使用する差動トランスを励振す
る正弦波発振器を高信頼化をはかるため多重化した場合
の切換方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention particularly relates to a switching method when a sine wave oscillator for exciting a differential transformer used in a detector is multiplexed in order to improve reliability.
本発明の目的は最近特に高信頼性が要求されているプラ
ント制御に用いる発振器の多重化の効果を発揮するため
、正弦波の発振停止を即座に検出し、使用側から待機側
に切換える切換方法を提供するにある。The purpose of the present invention is to achieve the effect of multiplexing oscillators used in plant control, which has recently required particularly high reliability.The purpose of the present invention is to immediately detect the stop of oscillation of a sine wave and switch from the use side to the standby side. is to provide.
第１図は本発明の実施例で、正弦波発振器１，２の２台
により多重化された例を示す。FIG. 1 shows an embodiment of the present invention, in which two sine wave oscillators 1 and 2 are used for multiplexing.
発振器２は常用で発振器はバックアップ用で、アナログ
ゲ−ＮＯ，１１で切換える。The oscillator 2 is for regular use, and the oscillator is for backup, and is switched by the analog game No. 11.
発振器２の出力である正弦波信号を全波整流３にて全波
整流し、コンパレータ５でレベル設定器４で設定される
レベルと比較される。A sine wave signal output from the oscillator 2 is full-wave rectified by a full-wave rectifier 3, and compared with a level set by a level setter 4 by a comparator 5.
コンパレータ５の出力はノット回路６で反転され、さら
に信号の立ち上がりを検出してパルス幅Ｔｗの出力を発
生するワンショット７に加えられる。The output of the comparator 5 is inverted by a NOT circuit 6, and further added to a one-shot 7 which detects the rising edge of the signal and generates an output with a pulse width Tw.
パルス幅Ｔｗは全波整流された信号がコンパレータの比
較レベル以下にある時間よりも長い時間に設定している
。The pulse width Tw is set to be longer than the time during which the full-wave rectified signal is below the comparison level of the comparator.
比較器５の出力とワンショットの出力の和をオア回路８
でつくり、値が１のときアナログゲート１０をオンし、
０のとき１０をオフする。OR circuit 8
When the value is 1, turn on the analog gate 10,
When it is 0, 10 is turned off.
また、オア回路８の出力をノット回路９で反転させアナ
ログゲート１１をゲート１０がオンのときオフ、オフの
ときオンさせ切換える。Further, the output of the OR circuit 8 is inverted by the NOT circuit 9, and the analog gate 11 is turned off when the gate 10 is on, and turned on when the gate 10 is off.
第２図に各部の信号の動きを示す。Figure 2 shows the signal movements of each part.
■ぱ発振器２の出力、■は全波整流後の信号、Ｏぱコン
パレータ５の出力、０はノット回路６の出力、［Ｆ］は
ワンショット７の出力、［Ｆ］はオア回路８の出力であ
る。■The output of the output oscillator 2, ■is the signal after full-wave rectification, the output of the output comparator 5, 0 is the output of the NOT circuit 6, [F] is the output of the one-shot 7, [F] is the output of the OR circuit 8 It is.
発振器２が正常に発振している場合は第２図に示すよう
に［Ｆ］の値は１で、ゲート１０はオン、ゲート１１は
オフとなっており、発振器２の出力が使用される。When the oscillator 2 is oscillating normally, the value of [F] is 1 as shown in FIG. 2, the gate 10 is on, the gate 11 is off, and the output of the oscillator 2 is used.
発振器２が発振停止の状態におちいるとＴｗ時間後［Ｆ
］の値は０となり、ゲート１０はオフ、ゲート１１はオ
ンとなり、発振器１の出力が使用される。When the oscillator 2 stops oscillating, after Tw time [F
] becomes 0, gate 10 is turned off, gate 11 is turned on, and the output of oscillator 1 is used.
発振停止後切換える迄の時間Ｔｗは、比較レベルとの関
係で決定されるが、１／４サイクル以下の短時間に設定
することが可能であり、異常発生後速やかに切換えが実
行できる。The time Tw until switching after stopping oscillation is determined in relation to the comparison level, but it can be set to a short time of 1/4 cycle or less, and switching can be performed quickly after an abnormality occurs.
本発明により、正弦波発振器の異常を速かに検出し、使
用側からバックアップ側に切換可能となり、ほゾ連続し
た正弦波を得ることによりプラント全体の信頼向上が実
現できる。According to the present invention, it is possible to quickly detect an abnormality in the sine wave oscillator and switch from the use side to the backup side, and by obtaining continuous sine waves, it is possible to improve the reliability of the entire plant.
第１図は本発明の実施例を示す構成図である。
第２図は各信号の関係を示すタイミングチャートである
。
１・・・・・・正弦波発振器、２・・・・・・正弦波発
振器、３・・・・・・全波整流、４・・・・・・レベル
設定器、５・・・・・・コンパレータ、６・・・・・・
ノット回路、７・・・・・・ワンショツト、８・・・・
・・オア回路、９・・・・・・ノット回路、１ｏ・・・
・・・アナログゲート、１１・曲・アナログゲート。FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a timing chart showing the relationship between each signal. 1... Sine wave oscillator, 2... Sine wave oscillator, 3... Full wave rectifier, 4... Level setter, 5...・Comparator, 6...
Knot circuit, 7... One shot, 8...
...OR circuit, 9...NOT circuit, 1o...
...Analog Gate, 11/Song/Analog Gate.
Claims (1)
ータにより設定レベルを越えた値を検出し、コンパレー
タ出力の反転信号をワンショット回路に与え、上記コン
パレータの出力とワンショット回路の出力の和により正
弦波発振器の異常を検出し他方の正弦波発振器に切換え
る多重化正弦波発振器の切換方法。1 The output of the sine wave oscillator is full-wave rectified, the value exceeding the set level is detected by the comparator, the inverted signal of the comparator output is given to the one-shot circuit, and the sum of the output of the above comparator and the output of the one-shot circuit is A switching method for multiplexed sine wave oscillators that detects an abnormality in one sine wave oscillator and switches to another sine wave oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54076870A JPS5910091B2 (en) | 1979-06-20 | 1979-06-20 | How to switch multiplexed sine wave oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54076870A JPS5910091B2 (en) | 1979-06-20 | 1979-06-20 | How to switch multiplexed sine wave oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS561601A JPS561601A (en) | 1981-01-09 |
| JPS5910091B2 true JPS5910091B2 (en) | 1984-03-07 |
Family
ID=13617667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54076870A Expired JPS5910091B2 (en) | 1979-06-20 | 1979-06-20 | How to switch multiplexed sine wave oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5910091B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61230074A (en) * | 1985-04-04 | 1986-10-14 | Matsushita Electric Ind Co Ltd | Time setting device |
| JPS61246696A (en) * | 1985-04-24 | 1986-11-01 | Matsushita Electric Ind Co Ltd | Time setting apparatus |
-
1979
- 1979-06-20 JP JP54076870A patent/JPS5910091B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61230074A (en) * | 1985-04-04 | 1986-10-14 | Matsushita Electric Ind Co Ltd | Time setting device |
| JPS61246696A (en) * | 1985-04-24 | 1986-11-01 | Matsushita Electric Ind Co Ltd | Time setting apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS561601A (en) | 1981-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5910091B2 (en) | How to switch multiplexed sine wave oscillator | |
| JPS5360549A (en) | Phase synchronous circuit | |
| JPS5616328A (en) | Phase synchronous loop device | |
| JPS5344165A (en) | Programable counter | |
| JPH032342U (en) | ||
| JPS558287A (en) | Phase controller | |
| JPS5336654A (en) | Scr control circuit | |
| JPS5393330A (en) | Inverter control | |
| JPS5568879A (en) | Chopper device | |
| JPS6043147A (en) | Electronic control apparatus for diesel engine | |
| JPS5510644A (en) | Stabilizing method for alternating-current voltage | |
| JPS5556483A (en) | Voltage control method of inverter | |
| JPS5336438A (en) | Input/output control unit | |
| FR2351534A1 (en) | Rectifier bridge control system - uses several bridges connected in series and uses phase shift control | |
| JPS54124915A (en) | Phase controller | |
| JPS51136134A (en) | High frequency inverter | |
| JPH0478572U (en) | ||
| JPS55128916A (en) | Automatic phase control unit | |
| JPH0336959A (en) | Dc-dc converter | |
| JPS62115781U (en) | ||
| JPH0299422U (en) | ||
| JPS5741466A (en) | Device for generating ignition reference position signal | |
| JPS6099072U (en) | arc welding machine | |
| JPS6447238A (en) | Multioutput power source circuit | |
| JPS5493955A (en) | Ignition pulse phase control method |