JPH0734566B2 - Intercom equipment - Google Patents
Intercom equipmentInfo
- Publication number
- JPH0734566B2 JPH0734566B2 JP7724689A JP7724689A JPH0734566B2 JP H0734566 B2 JPH0734566 B2 JP H0734566B2 JP 7724689 A JP7724689 A JP 7724689A JP 7724689 A JP7724689 A JP 7724689A JP H0734566 B2 JPH0734566 B2 JP H0734566B2
- Authority
- JP
- Japan
- Prior art keywords
- level
- call
- voltage
- intercom
- line
- 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 - Lifetime
Links
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明はインターホン装置に係わり、特に通話ラインの
直流電圧レベルを通話信号、待受信号、呼出信号とする
インターホン装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intercom system, and more particularly to an intercom system that uses a DC voltage level of a communication line as a communication signal, a standby signal, and a ringing signal.
［従来の技術］ 従来のインターホン装置は、第５図に示すように玄関子
機21の端子21aと室内親機26の端子26aを通話ラインL21
で接続する。通話ラインL21のライン電圧は待受フェイ
ズPH2、呼出フェイズPH3、通話フェイズPH1（以下、単
にPH2、PH3、PH1と記す）の状態に応じて待受レベル
V2、呼出レベルV3、通話レベルV1となる。[Prior Art] As shown in FIG. 5, the conventional intercom device connects the terminal 21a of the entrance cordless handset 21 and the terminal 26a of the indoor base unit 26 to the call line L21.
Connect with. The line voltage of the call line L21 is the standby level depending on the states of the standby phase PH2, ringing phase PH3, and calling phase PH1 (hereinafter simply referred to as PH2, PH3, PH1).
V 2 , call level V 3 , and call level V 1 .
また、待受レベルV2のライン電圧を中位とし、待受レベ
ルV2より高い検出レベルVH以上の電圧レベルを通話レベ
ルV1、低い検出レベルVL以下のライン電圧を呼出レベル
V3としてある。（第６図参照） ライン電圧の検出には室内親機26に設けた電圧レベル検
出回路31で行なう。電圧レベル検出回路31は一方が電源
＋Vcc、他方が基準電位点に接続された直列抵抗R11とR
12を用いる。また、抵抗R11とR12の接続点と端子26aと
を接続する。更に抵抗R11とR12の接続点と直流増幅器32
の（＋）入力側とを抵抗R13で接続する。つぎに、一端
が基準電位点に接続されたコンデンサC12の他端を直流
増幅器32の（＋）入力側と接続する。更に、一方が電圧
＋Vcc、他方が基準電位点に接続された直列抵抗R14、R
15の接続点を直流増幅器32の（−）入力側と接続する。
抵抗R14、R15が検出電圧設定用抵抗、抵抗R11とR12が待
受時の入力電圧設定用抵抗、抵抗R13とコンデンサC11が
音声信号除去フィルタである。直流増幅器32は差動増幅
器をコンパレータとして使用する。In addition, the line voltage of the standby level V 2 is set to the middle level, the detection level V H higher than the standby level V 2 is the call level V 1 , and the line voltage lower than the detection level V L is the ring level.
It is as V 3 . (See FIG. 6) The line voltage is detected by the voltage level detection circuit 31 provided in the indoor base unit 26. One of the voltage level detection circuits 31 is the power supply + Vcc, and the other is the series resistances R 11 and R connected to the reference potential point.
Use 12 Further, the connection point of the resistors R 11 and R 12 is connected to the terminal 26a. In addition, the connection point of resistors R 11 and R 12 and the DC amplifier 32
Connect to the (+) input side of with a resistor R 13 . Next, the other end of the capacitor C 12 , one end of which is connected to the reference potential point, is connected to the (+) input side of the DC amplifier 32. Furthermore, one is the voltage + Vcc, the other is the series resistance R 14 , R connected to the reference potential point.
The connection point of 15 is connected to the (−) input side of the DC amplifier 32.
The resistors R 14 and R 15 are detection voltage setting resistors, the resistors R 11 and R 12 are input voltage setting resistors during standby, and the resistor R 13 and the capacitor C 11 are audio signal elimination filters. The DC amplifier 32 uses a differential amplifier as a comparator.
通話は玄関子機21のスピーカ23とマイク24および通話回
路22、通話ラインL21、室内親機26の通話回路27、スピ
ーカ28、マイク29を介して行こなう。また、デレビドア
ホン等の付属機器25、30を玄関子機21と室内親機26に設
け、付属機器30の制御は電圧レベル検出回路31から送出
される制御信号Vcを入力される制御回路33で行こなう。A call can be made through the speaker 23 and the microphone 24 of the entrance slave 21, the call circuit 22, the call line L 21 , the call circuit 27 of the indoor master device 26, the speaker 28, and the microphone 29. Further, accessory devices 25 and 30 such as a delevi doorphone are provided in the entrance cordless handset 21 and the indoor master device 26, and the control of the accessory device 30 is performed by the control circuit 33 to which the control signal Vc sent from the voltage level detection circuit 31 is input. Let's go.
電圧レベル検出回路31の直流増幅器32の（＋）入力側は
抵抗R11とR12の分圧電圧となっており、ほぼ待受レベル
V2と等しい。また、検出レベルVH、VLは抵抗R14とR15の
分圧電圧で定める。直流増幅器32の出力電圧は（＋）入
力側が例えば待受レベルV2から通話レベルV1に遷移する
とＬレベルからＨレベルに変化し、逆の場合はＨレベル
からＬレベルに変化する。この出力電圧を制御信号Vcと
し、制御信号Vcのレベル変化で付属機器30を制御する。The (+) input side of the DC amplifier 32 of the voltage level detection circuit 31 is the divided voltage of the resistors R 11 and R 12 , which is almost the standby level.
Equal to V 2 . The detection levels V H and V L are determined by the divided voltage of the resistors R 14 and R 15 . The output voltage of the DC amplifier 32 changes from the L level to the H level when the (+) input side transits from the standby level V 2 to the call level V 1 , for example, and changes from the H level to the L level in the opposite case. This output voltage is used as the control signal Vc, and the accessory device 30 is controlled by changing the level of the control signal Vc.
［発明が解決しようとする課題］ 一般にインターホン装置で電源をAC100Vから供給される
場合、受電側の電源トランス、整流器等を小型でかつ簡
単な回路構成とし、インターホン装置全体に占める電源
回路の割合いを小さくすることが重要な設計条件となっ
ている。[Problems to be Solved by the Invention] Generally, when power is supplied from an AC100V in an intercom device, a power transformer, a rectifier, and the like on the power receiving side have a small and simple circuit configuration, and the power supply circuit occupies the entire intercom device. Is a key design requirement.
このため、電源の容量が小さく、レギュレーションの良
くない電源トランスを使用すると、第７図に示すように
レギュレーションの良い場合のＡ曲線がＢ曲線のように
なるのでライン電圧に重畳される音声信号f1のレベルに
よってはライン電圧がVDだけ降下しVD1となる場合があ
る。このVD1により第６図に示すように検出レベルVH以
下にライン電圧が降下すると異常な制御信号Vcが制御回
路33へ送出され、付属機器30が異常動作する等の難点が
ある。Therefore, if a power transformer with a small power supply capacity and poor regulation is used, the A curve in the case of good regulation becomes a B curve as shown in FIG. 7, so that the audio signal f superimposed on the line voltage is Depending on the level of 1, the line voltage may drop by VD to become VD 1 . As shown in FIG. 6, when the line voltage drops below the detection level V H due to VD 1 , an abnormal control signal Vc is sent to the control circuit 33, and the accessory 30 malfunctions.
［発明の目的］ 本発明は上述した点に鑑みなされたもので、通話ライン
に重畳される音声信号を整流し、通話レベルを安定化す
ることにより、レギュレーションの良くない電源トラン
スを使用しても正常な動作が期待できるインターホン装
置を提供することを目的とする。[Object of the Invention] The present invention has been made in view of the above-mentioned points, and even if a power transformer with poor regulation is used by rectifying a voice signal superimposed on a call line and stabilizing the call level. An object is to provide an intercom device that can be expected to operate normally.
［課題を解決するための手段］ 以上の目的を達成するための、本発明によるインターホ
ン装置は、ドアホンとインターホン親機とを接続する通
話ラインの直流電圧で通話レベル、待受レベル、呼出レ
ベルのそれぞれの状態を示すインターホン装置におい
て、前記通話ラインの前記インターホン親機側に接続さ
れ、前記通話ラインへ前記通話レベルに重畳して送受さ
れる音声信号を整流し、前記通話レベルの電圧レベルを
安定化する電圧レベル安定化手段と前記通話レベルを検
出しインターホン親機の付属機器へ制御信号を送出する
電圧レベル検出手段で構成する。[Means for Solving the Problems] In order to achieve the above object, an intercom apparatus according to the present invention uses a DC voltage of a call line connecting an intercom and an intercom base unit to determine a call level, a standby level, and a call level. In the intercom device indicating each state, the voice signal is connected to the intercom master unit side of the call line, rectifies an audio signal transmitted / received to the call line by being superimposed on the call level, and stabilizes the voltage level of the call level. And a voltage level detecting means for detecting the call level and sending a control signal to an accessory device of the intercom master unit.
［実施例］ 以下、本発明によるインターホン装置の一実施例を第１
図に従って詳述する。[Embodiment] The first embodiment of the intercom apparatus according to the present invention will be described below.
It will be described in detail according to the figure.
第１図において、１は玄関子機、６は室内親機である。
玄関子機１の端子1aと室内親機６の端子6aを通話ライン
L1で接続する。In FIG. 1, reference numeral 1 is an entrance slave unit, and 6 is an indoor master unit.
Call line between the terminal 1a of the entrance cordless handset 1 and the terminal 6a of the indoor master unit 6
Connect with L 1 .
通話ラインL1のライン電圧は待受フェイズPH2、呼出フ
ェイズPH3、通話フェイズPH1の状態に応じて従来のイン
ターホン装置と同様待受レベルV2を中位、通話レベルV1
が最大、呼出レベルV3が最小とする。Line voltage of the call line L 1 is standby phase PH2, call phase PH3, medium similar standby level V 2 of the conventional intercom apparatus according to the state of the call phase PH1, the call level V 1
Is the maximum and the calling level V 3 is the minimum.
ライン電圧の検出には室内親機６に設けた電圧レベル検
出回路11で行こなう。The line voltage is detected by the voltage level detection circuit 11 provided in the indoor master device 6.
電圧レベル検出回路11は一方が電源＋Vcc、他方が基準
電位点に接続された直列抵抗R1とR2を設ける。また、抵
抗R1とR2の接続点と端子6aを接続する。更にR1とR2の接
続点と直流増幅器12の（＋）入力側の間を抵抗R3、ダイ
オードD1のアノード、カソードを介して接続する。The voltage level detection circuit 11 has series resistors R 1 and R 2 one of which is connected to the power source + Vcc and the other of which is connected to the reference potential point. Further, the connection point between the resistors R 1 and R 2 and the terminal 6a are connected. Further, the connection point between R 1 and R 2 and the (+) input side of the DC amplifier 12 are connected via a resistor R 3 and an anode / cathode of a diode D 1 .
つぎに、ダイオードD1のアノードとカソードの間に抵抗
R6の一端および他端を接続する。また、一端が基準電位
点に接続されたコンデンサC1の他端を直流増幅器12の
（＋）入力側と接続する。また、一方が電圧＋Vcc、他
方が基準電位点に接続された直流抵抗R4とR5の接続点を
直流増幅器12の（−）入力側と接続する。Next, there is a resistor between the anode and cathode of diode D 1.
Connect one end and the other end of R 6 . The other end of the capacitor C 1 whose one end is connected to the reference potential point is connected to the (+) input side of the DC amplifier 12. Also, one of the voltage + Vcc, the other direct current resistance is connected to a reference potential point R 4 and R 5 connecting point of the DC amplifier 12 (-) connected to the input side.
抵抗R4とR5が検出電圧設定用抵抗、抵抗R1とR2が待受時
の入力電圧設定用抵抗、抵抗R3とコンデンサC1が音声信
号除去フィルタである。また、D1が音声信号f1の整流用
ダイオード、抵抗R6がコンデンサC1の放電用抵抗であ
り、ダイオードD1と抵抗R6が電圧レベル安定化手段であ
る。Resistors R 4 and R 5 are detection voltage setting resistors, resistors R 1 and R 2 are input voltage setting resistors during standby, and resistors R 3 and C 1 are audio signal elimination filters. Further, D 1 is a rectifying diode for the audio signal f 1 , the resistor R 6 is a discharging resistor for the capacitor C 1 , and the diode D 1 and the resistor R 6 are voltage level stabilizing means.
通話は玄関子機１のスピーカ３とマイク４および通話回
路２、通話ラインL1、室内親機６の通話路７、スピーカ
８、マイク９を介して行こなう。また、テレビドアホン
等の付属機器５、10を玄関子機１と室内親機６に設け
る。付属機器10の制御は電圧レベル検出回路11から送出
される制御信号Vcを入力される制御回路13で行こなう。A call can be made through the speaker 3 and the microphone 4 of the entrance slave 1, the call circuit 2, the call line L 1 , the call path 7 of the indoor master device 6, the speaker 8 and the microphone 9. Further, accessory devices 5 and 10 such as a TV intercom are provided in the entrance slave device 1 and the indoor master device 6. The control of the accessory device 10 can be performed by the control circuit 13 to which the control signal Vc sent from the voltage level detection circuit 11 is input.
［発明の作用］ 上記構成のインターホン装置では直流増幅器12の（＋）
入力側は抵抗R1とR2の分圧電圧となっており、ほぼ待受
レベルV2と等しい。また、検出レベルVH、VLは抵抗R4と
R5の分圧電圧で定める。第２図に示すように音声信号f1
がライン電圧に重畳されると第１図のI1の電流が流れ
る。このI1はダイオードD1で整流されコンデンサC1に充
電される。このため、第３図の電圧VAだけ直流増幅器12
の（＋）入力側の電圧レベルが上昇しＫ曲線のようにな
る。この場合、電源トランスのレギュレーションが悪い
場合でも（＋）入力側の電圧レベルはＭ曲線となり、検
出レベルVH以下となることがなく従来のようにＬ曲線と
なって検出レベルVH以下となるような異常検出とはなら
ない。また、抵抗R6があるので、通話レベルV3が待受レ
ベルV2になったときはコンデンサC1に充電した電荷を抵
抗R6を介して放電電流I2として放電するので、抵抗R6が
ないときのＮ曲線に比べて０曲線となり、待受フェイズ
PH2への復帰が速くなる。[Operation of the Invention] In the intercom apparatus having the above configuration, the DC amplifier 12 (+)
On the input side, it is the divided voltage of resistors R 1 and R 2 , which is almost equal to the standby level V 2 . The detection level V H, V L and resistor R 4
Determined by the divided voltage of R 5 . As shown in FIG. 2, the audio signal f 1
Is superimposed on the line voltage, the current I 1 in FIG. 1 flows. The I 1 is rectified by the diode D 1 is charged in the capacitor C 1. Therefore, only the voltage V A shown in FIG.
The voltage level at the (+) input side of rises and becomes like a K curve. In this case, the voltage level of the even-regulation of the power transformer is bad (+) input side becomes M curve, and below the detection level V H at the L curve as in the prior art without the detection level below V H Such anomaly detection does not occur. Further, since the resistor R 6 is, since the call level V 3 when it becomes standby level V 2 is discharged as the discharge current I 2 the charge in the capacitor C 1 via the resistor R 6, resistor R 6 Compared to the N curve when there is no, the curve becomes 0, and the standby phase
Return to PH2 faster.
［発明の効果］ 以上の実施例から明なかなように、本発明によるインタ
ーホン装置は、ドアホンとインターホン親機とを接続す
る通話ラインの直流電圧で通話レベル、待受レベル、呼
出レベルのそれぞれの状態を示すインターホン装置にお
いて、前記通話ラインの前記インターホン親機側に接続
され、前記通話ラインへ前記通話レベルに重畳して送受
される音声信号を整流し、前記通話レベルの電圧レベル
を安定化する電圧レベル安定化手段と前記通話レベルを
検出しインターホン親機の付属機器へ制御信号を送出す
る電圧レベル検出手段で構成してあるので、電流容量の
少ないAC100Vの電源を用いても、音声信号による制御信
号の乱れを惹起せず、正常な動作を期待できる。EFFECTS OF THE INVENTION As is apparent from the above embodiments, the intercom apparatus according to the present invention uses the DC voltage of the call line connecting the doorphone and the intercom base unit to determine the call level, the standby level, and the call level. In the intercom device showing the state, the voice signal is connected to the intercom master unit side of the call line, rectifies a voice signal transmitted / received to the call line by being superimposed on the call level, and stabilizes the voltage level of the call level. Since it is composed of voltage level stabilization means and voltage level detection means that detects the call level and sends a control signal to the auxiliary device of the intercom base unit, even if the AC100V power supply with a small current capacity is used Normal operation can be expected without causing disturbance of the control signal.
第１図は本発明によるインターホン装置の一実施例を示
す回路図、第２図、第３図、第４図は第１図のインター
ホン装置の動作を説明する特性図、第５図は従来のイン
ターホン装置の回路図、第６図、第７図は第４図のイン
ターホン装置の動作を説明する特性図である。 D1……ダイオード（電圧レベル安定化手段） R6……抵抗（電圧レベル安定化手段） 12……差動増幅器（電圧レベル検出手段）FIG. 1 is a circuit diagram showing an embodiment of the intercom apparatus according to the present invention, FIGS. 2, 3, and 4 are characteristic diagrams for explaining the operation of the intercom apparatus of FIG. 1, and FIG. Circuit diagrams of the intercom apparatus, FIG. 6, and FIG. 7 are characteristic diagrams for explaining the operation of the intercom apparatus of FIG. D 1 ...... Diode (voltage level stabilizing means) R 6 ...... Resistance (voltage level stabilizing means) 12 ...... Differential amplifier (voltage level detecting means)
フロントページの続き (56)参考文献 特開 昭61−287366（ＪＰ，Ａ) 特開 昭64−89614（ＪＰ，Ａ) 特公 昭63−65185（ＪＰ，Ｂ２)Continuation of the front page (56) References JP 61-287366 (JP, A) JP 64-89614 (JP, A) JP 63-65185 (JP, B2)
Claims (1)
通話ラインの直流電圧で通話レベル、待受レベル、呼出
レベルのそれぞれの状態を示すインターホン装置におい
て、前記通話ラインの前記インターホン親機側に接続さ
れ、前記通話ラインへ前記通話レベルに重畳して送受さ
れる音声信号を整流し、前記通話レベルの電圧レベルを
安定化する電圧レベル安定化手段と前記通話レベルを検
出しインターホン親機の付属機器へ制御信号を送出する
電圧レベル検出手段とを備えたインターホン装置。1. An intercom device that indicates a call level, a standby level, and a call level by a DC voltage of a call line connecting an intercom and an interphone base unit. A voltage level stabilizing means that is connected and rectifies a voice signal that is transmitted and received by being superimposed on the call level to the call line, stabilizes the voltage level of the call level, and detects the call level and attaches to the intercom master unit. An intercom device including a voltage level detecting means for transmitting a control signal to a device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7724689A JPH0734566B2 (en) | 1989-03-29 | 1989-03-29 | Intercom equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7724689A JPH0734566B2 (en) | 1989-03-29 | 1989-03-29 | Intercom equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02256359A JPH02256359A (en) | 1990-10-17 |
| JPH0734566B2 true JPH0734566B2 (en) | 1995-04-12 |
Family
ID=13628503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7724689A Expired - Lifetime JPH0734566B2 (en) | 1989-03-29 | 1989-03-29 | Intercom equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0734566B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6365185B2 (en) | 2014-09-29 | 2018-08-01 | アイシン精機株式会社 | Door fixing mechanism |
-
1989
- 1989-03-29 JP JP7724689A patent/JPH0734566B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6365185B2 (en) | 2014-09-29 | 2018-08-01 | アイシン精機株式会社 | Door fixing mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02256359A (en) | 1990-10-17 |
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