JPS6014528B2 - alarm device - Google Patents
alarm deviceInfo
- Publication number
- JPS6014528B2 JPS6014528B2 JP55007658A JP765880A JPS6014528B2 JP S6014528 B2 JPS6014528 B2 JP S6014528B2 JP 55007658 A JP55007658 A JP 55007658A JP 765880 A JP765880 A JP 765880A JP S6014528 B2 JPS6014528 B2 JP S6014528B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- operational amplifier
- input
- alarm
- circuit
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/095—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using a lock detector
Landscapes
- Emergency Alarm Devices (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Description
【発明の詳細な説明】
本発明はある電圧範囲の両端で警報を送出する警報装橿
、さらに詳しくいえば電圧制御発振器の制御電圧が、制
御範囲の両端の限界に近接することを検出できる制御電
圧検出装置として用いられＺる警報装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an alarm system that sends out an alarm at both ends of a certain voltage range, and more specifically, a control system that can detect when the control voltage of a voltage controlled oscillator approaches the limits at both ends of the control range. This invention relates to an alarm device used as a voltage detection device.
マイクロ波帯のトランジスタ発振器が実用化されその発
振周波数の安定化を図るため、発振器を電圧制御発振器
（以下、Ｖ．Ｃ．○という）にして、自動周波数制御回
路（以下、ＡＦ．Ｃという）、あるいは自動位相制御回
路（以下Ａ．Ｐ．Ｃという）を附加する場合が多い。Microwave band transistor oscillators have been put into practical use, and in order to stabilize their oscillation frequency, the oscillators have been changed to voltage controlled oscillators (hereinafter referred to as VC○) and automatic frequency control circuits (hereinafter referred to as AF.C). , or an automatic phase control circuit (hereinafter referred to as A.P.C.) is often added.
その回路を利用すると、制御可能範囲は主としてＶ．Ｃ
．○の電圧制御端子に印加可能な電圧範囲で決まってお
り、その動作範囲の両端に近い制御電圧になるとＡＦ．
ＣあるいはＡ．Ｐ．Ｃループが制御可能の限界に近づき
少しずれるとＡ．Ｆ．Ｃループは周波数ずれを、ＡＰ．
Ｃループでは同期はずれ現象を起す。When using that circuit, the controllable range is mainly V. C
．． It is determined by the voltage range that can be applied to the voltage control terminal of ○, and when the control voltage is close to both ends of the operating range, the AF.
C or A. P. When the C loop approaches its controllable limit and deviates slightly, A. F. The C loop converts the frequency shift into AP.
In the C loop, an out-of-synchronization phenomenon occurs.
このようなＶ．Ｃ．○を例えばマイクロ波通信装置の局
部発振器として使用した場合に前記の障害が発生すると
通信システム全体に悪影響を与えるのでＶ．Ｃ．○の制
御電圧を監視して、制御限界に近づいたとき予備警報の
送出が望まれる。Such V. C. If the above-mentioned failure occurs when ○ is used as a local oscillator in a microwave communication device, for example, it will adversely affect the entire communication system, so V. C. It is desirable to monitor the control voltage of ○ and send a preliminary warning when it approaches the control limit.
このため従来の警報回路は、２つの検出回路を使用する
かあるいは検出回路自体１個であっても実際には２つの
演算増幅器を使用して制御電圧範囲の両端の異常検出を
行なっていた。For this reason, conventional alarm circuits use two detection circuits, or even if the detection circuit itself is one, it actually uses two operational amplifiers to detect abnormalities at both ends of the control voltage range.
本発明の目的は、回路の信頼性を上げるため１つの演算
増幅器で構成した制御電圧警報装置を提供することにあ
る。An object of the present invention is to provide a control voltage alarm device configured with one operational amplifier in order to improve the reliability of the circuit.
前記目的を達成するために本発明による警報装置は、信
号入力端子に互に異なった極性端を接続した２個のダイ
オードと、前記各々のダイオードに池端を差動入力とし
た１個の演算増幅器と、前記演算増幅器の２つの入力に
それぞれ異なったバイアス電圧を与える回路とを含み、
入力信号変動に対し前記演算増幅器の２つの入力端子に
加えられる電圧の大小によって一定の入力信号電圧範囲
外の両側において警報信号を送出するように構成してあ
る。In order to achieve the above object, the alarm device according to the present invention includes two diodes whose signal input terminals are connected to terminals with different polarities, and one operational amplifier whose terminals are differentially input to each of the diodes. and a circuit that applies different bias voltages to the two inputs of the operational amplifier,
The system is configured to send an alarm signal on both sides outside a fixed input signal voltage range depending on the magnitude of the voltage applied to the two input terminals of the operational amplifier in response to input signal fluctuations.
上記構成によれば本発明の目的を完全に達成することが
できる。According to the above configuration, the object of the present invention can be completely achieved.
以下、図面を参照して本発明を詳細に説明する。Hereinafter, the present invention will be explained in detail with reference to the drawings.
第１図は本発明による警報回路の実施例を示す回路図で
ある。FIG. 1 is a circuit diagram showing an embodiment of an alarm circuit according to the present invention.
端子３１に印放されたＶ．Ｃ．○の制御電圧ＶＩＮは抵
抗１、ダイオード４、抵抗５を通して演算増幅器１７の
ｅ入力端子に、また抵抗１１、ダィオ−ド１４、抵抗１
５を通して演算増幅器１７の由入力端子に印加される。V. which is released to the terminal 31. C. The control voltage VIN of ○ is connected to the e input terminal of the operational amplifier 17 through resistor 1, diode 4, and resistor 5, and is also connected to the e input terminal of operational amplifier 17 through resistor 11, diode 14, and resistor 1.
5 to the input terminal of the operational amplifier 17.
演算増幅器１７のｅ入力端子にはアースと負電源Ｖｓ間
に挿入された抵抗３、ッェナーダィオード６により抵抗
２を通してＶ′−電圧が与えられている。同様に由入力
端子には抵抗１３、ッェナーダィオード１６により抵抗
１２を通してＶ′＋が与えられている。A voltage V'- is applied to the e input terminal of the operational amplifier 17 through a resistor 2 and a resistor 3 and a Jenner diode 6 inserted between the ground and the negative power supply Vs. Similarly, V'+ is applied to the input terminal through a resistor 12 by a resistor 13 and a Jenner diode 16.
警報は、演算増幅器１７の出力端子から抵抗１８により
正帰還をかけて、ヒステリシスを持たせて送出できるよ
うにしている。入力電圧ＶＩＮが端子３１に加えられた
とき、演算増幅器のｅ入力端子の電圧Ｖ−はダイオード
の順方向の直列抵抗をＲＳとし抵抗１，２，３の抵抗値
を各々Ｒ，，Ｒ２，Ｒ３として、Ｒ２がＲ３より十分大
きいと仮定するとＶ，Ｎ２Ｖ′‐のときはダイオード４
がカットオフになっているのでＶ‐＝Ｖ‐′Ｖ，Ｎ２Ｖ
′−のときはＶ‐＝Ｖ′−−（Ｖ′‐一Ｖ…）Ｒ２／（
Ｒ，十ＲＳ十Ｒ２）これを図に書くと、第３図ａのＶ‐
のようになる。Positive feedback is applied to the output terminal of the operational amplifier 17 by a resistor 18, so that the alarm can be sent out with hysteresis. When the input voltage VIN is applied to the terminal 31, the voltage V- at the e input terminal of the operational amplifier is expressed as follows: RS is the forward series resistance of the diode, and the resistance values of resistors 1, 2, and 3 are R, , R2, and R3, respectively. Assuming that R2 is sufficiently larger than R3, when V, N2V'-, the diode 4
is the cutoff, so V-=V-'V, N2V
'-, V-=V'--(V'-1V...)R2/(
R, 1RS 1R2) If you write this in a diagram, it becomes V- in Figure 3 a.
become that way.
同様に、演算増幅器の由入力端子の電圧Ｖ＋は第３図ａ
のＶ十のようになる。したがって、Ｖ，およびＶ２の点
でＶ十電圧とＶ‐の電圧は交差するのでＶ＋＞Ｖ‐とな
ったときに、警報を送出する警報回路が実現できる。第
４図はこのように動作する演算増幅器の出力電圧を示し
たものであり、ＶＩＮがＶ，からＶ２の範囲外のとき地
気警報信号が出されることを示している。Similarly, the voltage V+ at the input terminal of the operational amplifier is shown in Figure 3a.
It becomes like V ten. Therefore, since the V+ voltage and the V- voltage intersect at the points V and V2, an alarm circuit that sends out an alarm when V+>V- can be realized. FIG. 4 shows the output voltage of the operational amplifier operating in this manner, and shows that an earth alarm signal is issued when VIN is outside the range from V to V2.
警報電圧の設定は図からわかるように、Ｖ′十、Ｖ′−
の値およびＲ，，Ｒ２の比または抵抗器Ｉ１，１２の比
で決まる。第２図は本発明の他の実施例を示す回路図で
バイアスを与える回路としてッェナーダィオードの代り
に抵抗を用いたものである。本図においても、ダイオー
ドの直列抵抗をＲＳ抵抗器１，２，３の抵抗値を各々Ｒ
，，Ｒ２，Ｒ３としてＲ２がＲ３より十分大きくＶ，Ｎ
が変った場合にＲ２に流れる電流によってＲ２，Ｒ３に
よって決まる電圧に大きな影響を与えなければ、第２図
と同一と考えてよく第３図ａと同様になり第３図ｂの実
線のようになる。As you can see from the diagram, the alarm voltage settings are V'+, V'-
It is determined by the value of and the ratio of R, , R2 or the ratio of resistors I1 and 12. FIG. 2 is a circuit diagram showing another embodiment of the present invention, in which a resistor is used in place of the Jenner diode as a circuit for applying bias. In this figure as well, the series resistance of the diode is expressed as the resistance value of RS resistors 1, 2, and 3, respectively.
,,R2,R3, R2 is sufficiently larger than R3, V,N
If the current flowing through R2 changes, and the voltage determined by R2 and R3 is not significantly affected, it can be considered to be the same as Fig. 2, and the result will be the same as Fig. 3 a, as shown by the solid line in Fig. 3 b. Become.
また、Ｒ２がＲ３，Ｒ４の値に近づいた場合でも例えば
Ｖ‐の電圧はＶ，ＮとＶ′‐ではＶ‐：Ｖ′‐であり、
Ｖ，ＮミＶ′‐ではＲ２を流れる電流によりＲ３を流れ
る電流が増加するためＶ′‐が負の方向に引張られる。Also, even if R2 approaches the values of R3 and R4, for example, the voltage of V- is V-:V'- for V, N and V'-,
At V,N/V'-, the current flowing through R2 increases the current flowing through R3, so V'- is pulled in the negative direction.
このため、電圧は第３図ｂの破線のようになるが、動作
上は特に問題を生じない。以上説明したように本発明に
よれば、２つの入力端子に各々別のバイアス電圧を与え
る回路と入力信号から別々の入力端子に互いに逆向きに
接続されたダイオードと１個の演算増幅器を用いること
により信頼性の高い保護回路を実現できる。For this reason, the voltage becomes as shown by the broken line in FIG. 3b, but this does not cause any particular problem in operation. As explained above, according to the present invention, a circuit that applies different bias voltages to two input terminals, diodes connected in opposite directions to different input terminals from the input signal, and one operational amplifier are used. This makes it possible to realize a highly reliable protection circuit.
第１図は本発明による警報回路の実施例を示す回路図、
第２図は本発明の他の実施例を示す回路図、第３図は第
１図、第２図の電圧特性を示すグラフ、第４図は出力電
圧特性を示すグラフである。
１，２，３，９，１１，１２，１３，１８，１９・・・
・・・抵抗、４，１４…・・・ダイオード、５，１５…
・・・抵抗、６，１６・・・・・・ッェナーダィオード
、１７・・・・・・演算増幅器、３１・・・・・・入力
端子、３２・・・・・・出力端子、４１，４２・・・・
・・コンデンサ。
第１図第３図
第４図
第２図FIG. 1 is a circuit diagram showing an embodiment of an alarm circuit according to the present invention;
FIG. 2 is a circuit diagram showing another embodiment of the present invention, FIG. 3 is a graph showing the voltage characteristics of FIGS. 1 and 2, and FIG. 4 is a graph showing the output voltage characteristics. 1, 2, 3, 9, 11, 12, 13, 18, 19...
...Resistor, 4,14...Diode, 5,15...
... Resistor, 6, 16 ... Jenner diode, 17 ... Operational amplifier, 31 ... Input terminal, 32 ... Output terminal, 41, 42...
...Capacitor. Figure 1 Figure 3 Figure 4 Figure 2
Claims (1)
のダイオードと、前記各々のダイオードの他端を差動入
力とした１個の演算増幅器と、前記演算増幅器の２つの
入力にそれぞれ異なったバイアス電圧を与える回路とを
含み、入力信号変動に対し前記演算増幅器の２つの入力
端子に加えられる電圧の大小によって一定の入力信号電
圧範囲外の両側において警報信号を送出するように構成
した警報装置。1. Two diodes with mutually different polarity terminals connected to the signal input terminals, one operational amplifier with the other end of each of the diodes as a differential input, and two input terminals of the operational amplifier with different polarities, respectively. and a circuit for providing a bias voltage, and is configured to send an alarm signal on both sides outside a certain input signal voltage range depending on the magnitude of the voltage applied to the two input terminals of the operational amplifier in response to input signal fluctuations. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55007658A JPS6014528B2 (en) | 1980-01-25 | 1980-01-25 | alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55007658A JPS6014528B2 (en) | 1980-01-25 | 1980-01-25 | alarm device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56104541A JPS56104541A (en) | 1981-08-20 |
| JPS6014528B2 true JPS6014528B2 (en) | 1985-04-13 |
Family
ID=11671909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55007658A Expired JPS6014528B2 (en) | 1980-01-25 | 1980-01-25 | alarm device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6014528B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61144123A (en) * | 1984-12-18 | 1986-07-01 | Toshiba Corp | Pll synchronous detecting circuit |
-
1980
- 1980-01-25 JP JP55007658A patent/JPS6014528B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56104541A (en) | 1981-08-20 |
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