JPS5913459A - Circuit for detecting polarity - Google Patents
Circuit for detecting polarityInfo
- Publication number
- JPS5913459A JPS5913459A JP12265182A JP12265182A JPS5913459A JP S5913459 A JPS5913459 A JP S5913459A JP 12265182 A JP12265182 A JP 12265182A JP 12265182 A JP12265182 A JP 12265182A JP S5913459 A JPS5913459 A JP S5913459A
- Authority
- JP
- Japan
- Prior art keywords
- photocoupler
- current
- test device
- polarity
- 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.)
- Pending
Links
- 238000004891 communication Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 21
- 238000010586 diagram Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000218645 Cedrus Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
- H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Abstract
Description
【発明の詳細な説明】
（１）発明の技術分野
本発明は電話交換機の加入者回路における通話電流の極
性検出を行う回路に関するものである。DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a circuit for detecting the polarity of a communication current in a subscriber circuit of a telephone exchange.
（２）従来技術と問題点
第１図は従来一般に行われる通話電流の極性検出回路図
であり、同図において１は極性検出回路、２は通話電流
供給回路をそれぞれ示している。(2) Prior Art and Problems FIG. 1 is a diagram of a polarity detection circuit for a communication current that is commonly used in the past. In the figure, 1 indicates a polarity detection circuit, and 2 indicates a communication current supply circuit.
第１図の右側は加入者回路の通話電流供給回路２で、Ａ
は加入者電話機のオンフック及びオフフッタの検出をす
るリレーである。ａはＡリレーの接点で発呼（オノフッ
ク月こなればＡリレーが動作するのでａｉ、ａが導通し
発呼処理制御装置Ｉこ情報を送る。The right side of Fig. 1 is the communication current supply circuit 2 of the subscriber circuit, A
is a relay that detects on-hook and off-hook of subscriber telephones. A makes a call at the contact point of the A relay (onohook). Since the A relay operates, ai and a become conductive and send information to the call processing control device I.
極性検出回路Ｉの動作は、８１図のｉ合、ＤＯ整流器が
順方向でＤＩ整流器が逆方向であるためＥリレーが動作
し、Ｆリレーが動作しない。As for the operation of the polarity detection circuit I, in case i in FIG. 81, the DO rectifier is in the forward direction and the DI rectifier is in the reverse direction, so the E relay operates and the F relay does not operate.
ｅ、ｆはそれぞれＥ ＩＪシレーびＦ ＩＪシレー接点
で極性の試験を行う試験装置に接続され情報を送る。E and f are connected to a test device that performs a polarity test through E IJ and F IJ contacts, respectively, and send information.
従来の極性検出回路は電気的信頼度の悪い可動部分があ
る接点を持つリレーを用いていた。又リレーの欠点は銅
線及び鉄を用いているため重量が重く、さらに動作復旧
の毎に機械音を生じる問題点があった。Conventional polarity detection circuits use relays with contacts that have moving parts with poor electrical reliability. Another disadvantage of relays is that they are heavy due to the use of copper wire and iron, and they also have the problem of producing mechanical noise every time they are restored to operation.
（３）発明の目的
本発明は上記従来の欠点に鑑み、通話電流の極性検出素
子として電磁継電器（リレー）を用いず、フォトカプラ
ーを用いることｌこより、電気的信頼度が良く、重量が
軽く、機械音を生じない袷性検出回路を提供することを
目的とするものである。(3) Purpose of the Invention In view of the above-mentioned drawbacks of the conventional technology, the present invention uses a photocoupler instead of an electromagnetic relay as a polarity detecting element for the communication current, which has good electrical reliability and is light in weight. The object of the present invention is to provide a foldability detection circuit that does not generate mechanical noise.
（４）発明の構成
そしてこの目的は本発明によれば加入者線路の通話電流
の極性を試験する試験装置ｌこおいて、該試験装置内に
て通ｍａの発呼ループを形成させ、該発呼ルーズに流れ
る電流の検出素子としてフォトカプラーを用いたこと全
特徴とする極性検出回路を提供することによって達成さ
れる。(4) Structure and object of the invention According to the present invention, in a testing device for testing the polarity of a communication current in a subscriber line, a calling loop is formed in the testing device; This is achieved by providing a polarity detection circuit characterized in that a photocoupler is used as a detection element for a loosely flowing current.
（５）発明の実施例 以下本発明実施例を図面によって詳述する。(5) Examples of the invention Embodiments of the present invention will be described in detail below with reference to the drawings.
第２図は本発明による極性検出回路の具体的構成図であ
る。FIG. 2 is a specific configuration diagram of the polarity detection circuit according to the present invention.
同図ζこおいて、１．２は第１図で弱明したのと同様に
極性検出回路及び通話電流供給回路を示し、次ｆｆＬ本
実施例の動作音説明すると、第２図のようｌこ、極性検
出回路ｌが通話電流供給回路に接続されている場合、Ｄ
Ｏ整流器が順方向でＤＩ整流器が逆方向であるためをこ
フォトカプラーＰＣＯの発光ターイオードｌこ電流が流
れ、ＰＣＯの受光トランジスターが導通し、端子ＰＯＬ
−Ｅにアースを−ｐｃｉの発光ダイオードＩこは＠流、
が流れｉいためｌこフォトカプラーＰＣＩの受光トラン
ジスターが導通ゼず昨子ＰＯＬ−Ｆに＋５ｖを出し試験
装＃（ｒ情報ケ送る。In the figure, 1.2 indicates a polarity detection circuit and a communication current supply circuit as shown in FIG. When the polarity detection circuit l is connected to the communication current supply circuit, D
Since the O rectifier is in the forward direction and the DI rectifier is in the reverse direction, a current flows through the light emitting diode of the photocoupler PCO, the light receiving transistor of the PCO becomes conductive, and the terminal POL
-Ground to -pci light emitting diode I.
Because of the current flow, the photocoupler PCI's light receiving transistor is not conductive and outputs +5V to the test device POL-F and sends information.
第３図は本発明による極性検出回路の他の具体的構成図
である。FIG. 3 is another specific configuration diagram of the polarity detection circuit according to the present invention.
第３図と第２図との違いは、極性検出回路１と通話電流
供給回路２との通話線（Ａ、Ｂ線）の接続が逆ｔこ接続
した場合を示したものである。極性杉、・出ｌｉ：Ｉｌ
路１ではダイオードＤ１が順方向、ダイオードＤＯが逆
方向となり、フォトカプラＰＣＯの発光ダイオードは電
流が流れず、ＰＣＩの発光ダイオードｌこ電流が流れる
ことにより、第２図の場合とは逆ｉコＰ ＯＬ −Ｅ端
子−こ＋５Ｖ％ＰＯＬ−Ｆ端子ｌこアースが出て試験装
置にアースが送らする。The difference between FIG. 3 and FIG. 2 is that the communication lines (A, B lines) between the polarity detection circuit 1 and the communication current supply circuit 2 are connected in an inverted-T configuration. Polar cedar, outli:Il
In path 1, the diode D1 is in the forward direction and the diode DO is in the reverse direction, and current does not flow in the light emitting diode of the photocoupler PCO, but current flows in the light emitting diode of PCI, so that the direction is reversed to that in Fig. 2. POL -E terminal - +5V% POL -F terminal l - Ground is output and the ground is sent to the test equipment.
（６）発明の詳細
な説明し１こようｌこ本発明は極性検出回路に７奥
オトカグラーを用いることにより、軽３、無量、長寿命
高信頼性の利点を持った極性検出回路を実現し得て、効
果大なるものである。(6) Detailed explanation of the invention 1 This invention uses a 7-deep Otokagura in the polarity detection circuit to realize a polarity detection circuit that has the advantages of being lightweight, indestructible, and having a long life and high reliability. It is very effective.
第１図は従来の極性検出回路を説明するための構成図、
第２図は本発明による極性検出回路の一実施例を説明す
るための構成図、第３図（ま本発明（こよる給付検出回
路の他の実施例を説明するための構成図である。
図面において、１は極性検出回路、２は通話電流供給ｌ
Ｐｌ路、Ａはオンフック、オフフック検出１ル−、ＰＣ
Ｏ，ＰＣＩはフォトカプラー全それぞれ示す。FIG. 1 is a configuration diagram for explaining a conventional polarity detection circuit.
FIG. 2 is a block diagram for explaining one embodiment of the polarity detection circuit according to the present invention, and FIG. 3 is a block diagram for explaining another embodiment of the benefit detection circuit according to the present invention. In the drawing, 1 is a polarity detection circuit, 2 is a communication current supply l.
Pl route, A is on-hook, off-hook detection 1 route, PC
O and PCI indicate all photocouplers, respectively.
Claims (1)
て、該試験装置内にて通練線の発呼ループを形成させ、
該発呼ルーズに流れる電流の検出素子としてフォトカプ
ラー會用いたことを特徴とする極性検出回路。In a test device for testing the polarity of a communication current in a subscriber line, forming a calling loop of a common line within the test device,
A polarity detection circuit characterized in that a photocoupler is used as a detection element for the loosely flowing current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12265182A JPS5913459A (en) | 1982-07-14 | 1982-07-14 | Circuit for detecting polarity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12265182A JPS5913459A (en) | 1982-07-14 | 1982-07-14 | Circuit for detecting polarity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5913459A true JPS5913459A (en) | 1984-01-24 |
Family
ID=14841246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12265182A Pending JPS5913459A (en) | 1982-07-14 | 1982-07-14 | Circuit for detecting polarity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5913459A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01168149A (en) * | 1987-12-24 | 1989-07-03 | Oki Electric Ind Co Ltd | Subscriber line polarity detection circuit for telephone exchange |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57111161A (en) * | 1980-12-26 | 1982-07-10 | Fujitsu Ltd | Service current supervising circuit |
-
1982
- 1982-07-14 JP JP12265182A patent/JPS5913459A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57111161A (en) * | 1980-12-26 | 1982-07-10 | Fujitsu Ltd | Service current supervising circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01168149A (en) * | 1987-12-24 | 1989-07-03 | Oki Electric Ind Co Ltd | Subscriber line polarity detection circuit for telephone exchange |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5913459A (en) | Circuit for detecting polarity | |
| US3849607A (en) | Polarity reversal switching circuit | |
| US3941941A (en) | Relayless switching circuit for application of ringing signals | |
| JPS62241493A (en) | Loop detecting circuit | |
| JPS6326577B2 (en) | ||
| JPS58215849A (en) | Circuit for detecting state of loop | |
| JPS6010961A (en) | Dc power source circuit | |
| JPS6374392A (en) | Contactless main wire trunk circuit | |
| JPH01227554A (en) | Polarity inversion detector for telephone circuit | |
| JPS6311785Y2 (en) | ||
| JPS5811109Y2 (en) | night switching circuit | |
| JPS5834841Y2 (en) | Off-hook detection device | |
| CN2170611Y (en) | Party-line telephone | |
| JPS6010896A (en) | Trunk line circuit | |
| JPS5847113B2 (en) | Public telephone incoming circuit | |
| JPS646618Y2 (en) | ||
| JPS5821471B2 (en) | Terminal connection method | |
| JPS5926686Y2 (en) | Terminal device power supply circuit | |
| JP2731248B2 (en) | Network controller | |
| JPS5875968A (en) | Facsimile receiver | |
| JPS61161865A (en) | Network controlling circuit | |
| JPS5853539B2 (en) | Bunpaiki | |
| JPS60117960A (en) | Terminal device | |
| JPS59161158A (en) | Subscriber terminal signal detecting system | |
| JPS6216594B2 (en) |