JPS59211371A - Circuit for detecting incoming call - Google Patents
Circuit for detecting incoming callInfo
- Publication number
- JPS59211371A JPS59211371A JP58085338A JP8533883A JPS59211371A JP S59211371 A JPS59211371 A JP S59211371A JP 58085338 A JP58085338 A JP 58085338A JP 8533883 A JP8533883 A JP 8533883A JP S59211371 A JPS59211371 A JP S59211371A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- incoming call
- magnetic field
- incoming
- coil
- 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 9
- 239000004065 semiconductor Substances 0.000 abstract description 4
- 230000005355 Hall effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Hall/Mr Elements (AREA)
Abstract
Description
【発明の詳細な説明】
（ａ）発明の技術分野
本発明は網制御装置等の着信検出回路に係り、着信検出
を着信電流に依って生ずる磁界変化により行うようにし
た着信検出方式に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to an incoming call detection circuit for a network control device, etc., and relates to an incoming call detection method in which incoming call detection is performed by a magnetic field change caused by an incoming current.
（ｂ）従来技術と問題点
従来の着信検出回路としては、着信電流によって電磁リ
レーを動作させ着信を検出する方式と、ホトカプラーに
よって着信を検出する方式とがあるが、前者は微弱な着
信電流でリレーを動作させるためコイル巻数の多い特殊
なリレーを用いなければならず装置構成が大形になると
いう欠点があった。また後者は、前者の大形になる欠点
を補うべく半導体技術の進歩と共に行われるようになっ
たが、線路に誘導される高電圧のノイズ等で破損し易い
という欠点がある。(b) Conventional technology and problems Conventional incoming call detection circuits include one that detects incoming calls by operating an electromagnetic relay using incoming current, and the other that detects incoming calls using a photocoupler. In order to operate the relay, a special relay with a large number of coil turns must be used, resulting in a large device configuration. The latter method has been developed along with advances in semiconductor technology to compensate for the large size of the former, but it has the drawback of being easily damaged by high-voltage noise induced in the line.
（ｃ）発明の目的
本発明の目的は半導体技術の進歩により提供されるよう
になった高感度の磁場検出用のホール素子を用い小型で
丈夫な着信検出回路を提供するにある。(c) Object of the Invention An object of the present invention is to provide a small and durable incoming call detection circuit using a highly sensitive Hall element for detecting a magnetic field, which has become available due to advances in semiconductor technology.
（ｄ’）発明の構成
本発明は着信による着信電流をコイルに流し、該電流に
よって生ずる磁界をコアで能率的に集束し、その磁路の
途中に磁場検出用ホール素子を置き、そのホール効果に
より発生する電圧によって着信を検出するように構成し
たものである。(d') Structure of the Invention The present invention allows an incoming current due to an incoming call to flow through a coil, efficiently focuses the magnetic field generated by the current in a core, places a Hall element for detecting the magnetic field in the middle of the magnetic path, and uses the Hall effect. The system is configured to detect incoming calls based on the voltage generated by the system.
（ｅ）発明の実施例
本発明の実施例を図を用いて説明する。第１図はプリン
ト板上における実装の一例で１はコアに巻かれたコイル
、２はホール素子を含む電子回路である。図に示すよう
に、コイルを巻いたリング状のコア１の一部を切り欠き
、その切り欠き部にホール素子と増幅回路を組み込んだ
電子回路２を配置して、コイルに流れる電流でコアに誘
起集束される磁界がホール素子を貫通するような位置に
固定される。第２図は全体動作を説明する回路結線図で
ある。図において１は第１図における１と同じコアに巻
かれたコイル、５はコンデンサで線路ＬＬ、Ｌ２から交
流信号のみを取り出し直流を遮断する為のものである。(e) Embodiments of the Invention Examples of the present invention will be described with reference to the drawings. FIG. 1 shows an example of mounting on a printed board, where 1 is a coil wound around a core, and 2 is an electronic circuit including a Hall element. As shown in the figure, a part of a ring-shaped core 1 around which a coil is wound is cut out, and an electronic circuit 2 incorporating a Hall element and an amplifier circuit is placed in the cutout, and the current flowing through the coil is used to power the core. It is fixed at a position such that the induced and focused magnetic field passes through the Hall element. FIG. 2 is a circuit connection diagram explaining the overall operation. In the figure, 1 is a coil wound around the same core as 1 in FIG. 1, and 5 is a capacitor for extracting only alternating current signals from lines LL and L2 and blocking direct current.
３はホール素子でＸ。3 is a Hall element and is X.
Ｘは電圧電極、ｙ、ｙは電流電極である。コイル１の磁
界はｘ、 ｘとｙ、ｙに垂直に加わる。４は電圧電極
ｘ、 ｘに誘起されるホール電圧の増幅器である。X is a voltage electrode, and y, y are current electrodes. The magnetic field of coil 1 is applied perpendicular to x, x and y, y. 4 is the voltage electrode x, an amplifier for the Hall voltage induced in x.
一般に着信信号は断続する交流信号（たとえば、１６Ｈ
ｚ）であり、着信があると線路Ｌ１−コイル１−コンデ
ンサ５−線路Ｌ２０回路に着信電流ｉが流れコイル１に
磁界を生じる。この磁界はホール素子３の電圧電極ｘ、
ｘにホール電圧ｖｈを誘起する。電圧ｖｈは増幅器４で
増幅されその出力に着信信号に応じた電圧が出力される
。Generally, the incoming signal is an intermittent AC signal (for example, 16H
z), and when there is an incoming call, an incoming current i flows through the line L1-coil 1-capacitor 5-line L20 circuit, producing a magnetic field in the coil 1. This magnetic field is applied to the voltage electrode x of the Hall element 3,
A Hall voltage vh is induced at x. The voltage vh is amplified by an amplifier 4, and a voltage corresponding to the incoming signal is outputted from the amplifier 4.
この実施例によれば着信電流の流れる回路には爾電圧の
小さい半導体類が無く線路に誘導される雷などの高圧ノ
イズに強いという効果を得る。According to this embodiment, the circuit through which the incoming current flows does not include any semiconductors with low voltage, and the circuit has the effect of being resistant to high-voltage noise such as lightning induced on the line.
（ｆ）発明の効果
本発明によれば高電圧ノイズ耐力を持つことが出来るの
で小型で高信頼度の着信検出回路を構成できてその効果
は著しい。(f) Effects of the Invention According to the present invention, it is possible to have a high voltage noise tolerance, so that a small and highly reliable incoming call detection circuit can be constructed, and the effect is remarkable.
第１図（、ｊ本発明による着信検出回路の実装図、第２
図は全体動作を表す回路結線図で、１はコア付きコイル
、３はホール素子、４は増幅器である。Fig. 1 (, j Implementation diagram of the incoming call detection circuit according to the present invention, Fig. 2
The figure is a circuit wiring diagram showing the overall operation, where 1 is a coil with a core, 3 is a Hall element, and 4 is an amplifier.
Claims (1)
の一部を切り欠いた形状のコアに巻かれたコイルと、該
切り欠き部に挿入された磁場検出用ホール素子とを有し
、コイルに流れる着信電流によって生ずる磁界変化を、
ホール起電−力の変化として検出するようにしたことを
特徴とする着信検出回路。An incoming call detection circuit in a network control device, etc. has a coil wound around a ring-shaped core with a portion cut out, and a Hall element for detecting a magnetic field inserted into the cutout. The magnetic field change caused by the incoming current is
An incoming call detection circuit characterized in that it detects a change in Hall electromotive force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58085338A JPS59211371A (en) | 1983-05-16 | 1983-05-16 | Circuit for detecting incoming call |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58085338A JPS59211371A (en) | 1983-05-16 | 1983-05-16 | Circuit for detecting incoming call |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59211371A true JPS59211371A (en) | 1984-11-30 |
Family
ID=13855853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58085338A Pending JPS59211371A (en) | 1983-05-16 | 1983-05-16 | Circuit for detecting incoming call |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59211371A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0382956U (en) * | 1989-12-07 | 1991-08-23 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52149404A (en) * | 1976-06-07 | 1977-12-12 | Ricoh Co Ltd | Busy and non-busy detecting system for telephone subscribing lines |
| JPS57128853A (en) * | 1981-02-04 | 1982-08-10 | Toshiba Corp | Current or voltage detector |
-
1983
- 1983-05-16 JP JP58085338A patent/JPS59211371A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52149404A (en) * | 1976-06-07 | 1977-12-12 | Ricoh Co Ltd | Busy and non-busy detecting system for telephone subscribing lines |
| JPS57128853A (en) * | 1981-02-04 | 1982-08-10 | Toshiba Corp | Current or voltage detector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0382956U (en) * | 1989-12-07 | 1991-08-23 |
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