JPH025336B2 - - Google Patents
Info
- Publication number
- JPH025336B2 JPH025336B2 JP57023385A JP2338582A JPH025336B2 JP H025336 B2 JPH025336 B2 JP H025336B2 JP 57023385 A JP57023385 A JP 57023385A JP 2338582 A JP2338582 A JP 2338582A JP H025336 B2 JPH025336 B2 JP H025336B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- smoothing
- output signal
- terminal
- 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
- 238000009499 grossing Methods 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/167—Circuits for remote indication
Landscapes
- Electronic Switches (AREA)
- Dc Digital Transmission (AREA)
Description
【発明の詳細な説明】
(a) 発明の技術分野
本発明は接点の開閉により生ずる変化信号を受
信する変化回路に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a change circuit that receives change signals caused by opening and closing of contacts.
(b) 従来技術と問題点
接点の開閉による変化信号を受信する受信回路
（一般に接点レシーバーと呼ばれる）は、接点を
有する送信回路に接続線で結ばれるが、その接続
距離は相当長いことが多い。接点レシーバーは、
両端接地型、片端接地型及び絶縁型の３つ
に大別される。の両端接地型はアース電流の接
続線への流れ込みにより誤動作する怖れがあり、
またの片端接地型も、接続線−アース間の浮遊
容量によるアース電流の流れ込みにより誤動作す
る怖れがある。これに対しの絶縁型は、上記の
原因による誤動作がなく、最も信頼性が高い。し
かし従来の絶縁型は、送信部の接点に供給する電
源を絶縁型とせねばなならず、このため電源とし
てはDC／DCコンバータを必要とし、また回路構
成が複雑となる欠点があつた。(b) Prior art and problems A receiving circuit (generally referred to as a contact receiver) that receives changing signals due to the opening and closing of contacts is connected to a transmitting circuit with contacts using a connecting wire, but the connection distance is often quite long. . The contact receiver is
There are three main types: double-end grounded type, single-end grounded type, and isolated type. The both-ends grounded type has the risk of malfunction due to ground current flowing into the connection wire.
The one-end grounding type also has the risk of malfunction due to the flow of ground current due to stray capacitance between the connection line and the ground. The isolated type, on the other hand, does not malfunction due to the causes mentioned above and is the most reliable. However, in the conventional isolated type, the power supply that is supplied to the contacts of the transmitter must be isolated, which requires a DC/DC converter as the power supply, and has the disadvantage that the circuit configuration is complicated.
(c) 発明の目的
本発明は上記の欠点を解決するためになされた
もので、簡単化された回路構成の受信回路の提供
を目的とする。(c) Purpose of the Invention The present invention was made to solve the above-mentioned drawbacks, and aims to provide a receiving circuit with a simplified circuit configuration.
(d) 発明の構成
上記目的を達成する為の本発明は、接点開閉器
の両端に結ばれる１次線輪と中間端子を有する２
次線輪とで構成されるトランスと、該中間端子か
ら得られる出力信号を平滑する平滑回路と、該平
滑回路の平滑出力電圧と所定の直流電圧とを比較
する比較回路と、前記２次線輪の両端に複流信号
を供給する手段とを備え、前記接点開閉器の接点
の開閉により生ずる変化信号を、前記比較回路の
出力信号により識別することを特徴とする受信回
路である。(d) Structure of the invention To achieve the above object, the present invention provides a contact switch having a primary wire ring connected to both ends of the contact switch and an intermediate terminal.
a smoothing circuit for smoothing the output signal obtained from the intermediate terminal; a comparison circuit for comparing the smoothed output voltage of the smoothing circuit with a predetermined DC voltage; and a means for supplying a double-current signal to both ends of the ring, and the receiving circuit is characterized in that a change signal caused by opening and closing of a contact of the contact switch is identified by an output signal of the comparison circuit.
(e) 発明の実施例
以下、本発明を図面によつて説明する。第１図
は本発明の一実施例を説明する回路図、第２図は
本発明の一実施例を説明するタイムチヤートであ
り、１は供給端子、２はインバータ、３，４，
５，６はAND回路及びトランジスタで構成され
るペリフエラルドライバ、７，９，１１，１２，
１３，１４，１５は抵抗、８は接点、１０はコン
デンサ、１６は比較回路、１７は出力端子、１８
は抵抗９とコンデンサ１０とで構成される平滑回
路、ａ，ｂは２次線輪の端子、ｃはセンタ端子、
ｄ，ｅは１次線輪の端子、Ｔはトランス、t1，
t2，t3は時刻、V1は複流信号、V2はセンタ端子ｃ
の信号、V3は入力信号、V4は平滑回路１８の出
力信号、V5は参照電圧、V6は出力信号である。
本発明による受信回路は、第１図に示すようにト
ランスＴの１次線輪の端子ｄ，ｅに接点８（信号
発生源）が結ばれている。一方トランスＴの２次
線輪の端子ａ，ｂにはトランジスタ５及び６を介
して複流信号V1（RZが50％のパルス信号）が供
給されると共に、センタ端子ｃの信号により１次
線輪側の信号変化分を検出する。さらにセンタ端
子の信号V2は平滑回路１８により平滑されたの
ち、その出力信号V4は比較回路１６に入力され、
この信号V4と参照電圧V5とが比較され、その差
分が出力端子１７から出力信号V6として出力さ
れる。これによりトランスＴの１次側の接点８の
開閉による変化信号が検出（受信）されることに
なる。(e) Examples of the invention The present invention will be explained below with reference to the drawings. FIG. 1 is a circuit diagram explaining an embodiment of the present invention, and FIG. 2 is a time chart explaining an embodiment of the present invention, in which 1 is a supply terminal, 2 is an inverter, 3, 4,
5, 6 are peripheral drivers composed of AND circuits and transistors, 7, 9, 11, 12,
13, 14, 15 are resistors, 8 is a contact, 10 is a capacitor, 16 is a comparison circuit, 17 is an output terminal, 18
is a smoothing circuit composed of a resistor 9 and a capacitor 10, a and b are terminals of the secondary wire ring, c is a center terminal,
d and e are the terminals of the primary coil, T is the transformer, t 1 ,
t 2 and t 3 are time, V 1 is double current signal, V 2 is center terminal c
, V 3 is an input signal, V 4 is an output signal of the smoothing circuit 18, V 5 is a reference voltage, and V 6 is an output signal.
In the receiving circuit according to the present invention, as shown in FIG. 1, contacts 8 (signal generation source) are connected to terminals d and e of the primary coil of the transformer T. On the other hand, a double current signal V 1 (pulse signal with RZ of 50%) is supplied to terminals a and b of the secondary wire ring of the transformer T via transistors 5 and 6, and a signal from the center terminal c is supplied to the primary wire Detects signal changes on the wheel side. Furthermore, after the signal V 2 at the center terminal is smoothed by the smoothing circuit 18, the output signal V 4 is inputted to the comparison circuit 16.
This signal V 4 and reference voltage V 5 are compared, and the difference is outputted from the output terminal 17 as an output signal V 6 . As a result, a change signal caused by opening and closing of the contact 8 on the primary side of the transformer T is detected (received).
第２図は上述の動作を説明するタイムチヤート
であり、第２図ａは複流信号V1の波形を示す。
このような複流信号V1がトランスＴの２次線輪
端子ａ，ｂに供給されている状態で時刻t2に接点
８がON（閉）とされると、トランスＴの１次線
輪ｄ，ｅ間の電圧、換言すれば入力信号V3は、
第２図ｄに示す信号波形となる。一方、２次線輪
のセンタ端子ｃの信号V2は、時刻t1〜t2の間は直
流分を含む脈流であつたが、時刻t2以降は第２図
ｃに示すように直流分が殆ど失われた形の脈流に
変化する。この信号V2が平滑回路１８により高
調波分が取除かれて第２図ｄに示す信号V4とな
る。第２図ｅは比較回路１６における参照電圧
V5の信号レベルを示し、従つて第１図における
出力端子１７には、第２図ｆに示す出力信号V6
が出力される。 FIG. 2 is a time chart illustrating the above-mentioned operation, and FIG. 2a shows the waveform of the double current signal V1 .
When the contact point 8 is turned ON (closed) at time t 2 with such a double current signal V 1 being supplied to the secondary wire terminals a and b of the transformer T, the primary wire terminal d of the transformer T , e, in other words, the input signal V 3 is
The signal waveform is shown in FIG. 2d. On the other hand, the signal V 2 at the center terminal c of the secondary coil was a pulsating flow including a DC component between times t 1 and t 2 , but after time t 2 it became a DC current as shown in FIG. It changes into a pulsating flow in which most of the water is lost. The harmonic components of this signal V 2 are removed by the smoothing circuit 18, resulting in a signal V 4 shown in FIG. 2d. FIG. 2e shows the reference voltage in the comparator circuit 16.
V 5 , and therefore the output terminal 17 in FIG. 1 receives the output signal V 6 shown in FIG. 2 f.
is output.
(f) 発明の効果
以上のように本発明は、トランスＴの供給電源
として絶縁型を必要としないので回路構成が簡単
となり、また誘導雑音等にも強いなどの利点を有
する。(f) Effects of the Invention As described above, the present invention has the advantage of simplifying the circuit configuration because it does not require an insulated power supply for the transformer T, and is resistant to induction noise.
第１図は本発明の一実施例を説明する回路図、
第２図は本発明の一実施例を説明するタイムチヤ
ートであり、図中に用いた符号は次の通りであ
る。
１は供給端子、２はインバータ、３，４，５，
６はAND回路及びトランジスタで構成されるペ
リフエラルドライバ、７，９，１１，１２，１
３，１４，１５は抵抗、８は接点、１０はコンデ
ンサ、１６は比較回路、１７は出力端子、１８は
平滑回路、ａ，ｂは２次線輪の端子、ｃはセンタ
端子、ｄ，ｅは１次線輪の端子、Ｔはトランス、
t1，t2，t3は時刻、V1は複流信号、V2はセンタ端
子の信号、V3は入力信号、V4は平滑回路１８の
出力信号、V5は参照電圧、V6は出力信号を示す。
FIG. 1 is a circuit diagram illustrating an embodiment of the present invention;
FIG. 2 is a time chart for explaining one embodiment of the present invention, and the symbols used in the figure are as follows. 1 is the supply terminal, 2 is the inverter, 3, 4, 5,
6 is a peripheral driver composed of an AND circuit and transistors, 7, 9, 11, 12, 1
3, 14, 15 are resistors, 8 is a contact, 10 is a capacitor, 16 is a comparison circuit, 17 is an output terminal, 18 is a smoothing circuit, a, b are secondary wire terminals, c is a center terminal, d, e is the terminal of the primary coil, T is the transformer,
t 1 , t 2 , t 3 are time, V 1 is double current signal, V 2 is center terminal signal, V 3 is input signal, V 4 is output signal of smoothing circuit 18, V 5 is reference voltage, V 6 is Shows the output signal.
Claims (1)
端子を有する２次線輪とで構成されるトランス
と、該中間端子から得られる出力信号を平滑する
平滑回路と、該平滑回路の平滑出力電圧と所定の
直流電圧とを比較する比較回路と、前記２次線輪
の両端に複流信号を供給する手段とを備え、前記
接点開閉器の接点の開閉により生ずる変化信号を
前記比較回路の出力信号により識別することを特
徴とする受信回路。1 A transformer consisting of a primary wire ring connected to both ends of a contact switch and a secondary wire ring having an intermediate terminal, a smoothing circuit for smoothing the output signal obtained from the intermediate terminal, and a smoothing circuit for smoothing the output signal obtained from the intermediate terminal. The comparison circuit includes a comparison circuit that compares the output voltage with a predetermined DC voltage, and means for supplying a double current signal to both ends of the secondary wire, and a change signal generated by opening and closing the contacts of the contact switch is connected to the comparison circuit. A receiving circuit characterized by identification based on an output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57023385A JPS58141029A (en) | 1982-02-16 | 1982-02-16 | Receiving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57023385A JPS58141029A (en) | 1982-02-16 | 1982-02-16 | Receiving circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58141029A JPS58141029A (en) | 1983-08-22 |
| JPH025336B2 true JPH025336B2 (en) | 1990-02-01 |
Family
ID=12109050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57023385A Granted JPS58141029A (en) | 1982-02-16 | 1982-02-16 | Receiving circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58141029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021251105A1 (en) | 2020-06-12 | 2021-12-16 | 日鉄ケミカル＆マテリアル株式会社 | Catalyst carrying base material and catalyst converter |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0552619B1 (en) * | 1992-01-22 | 1997-07-30 | Siemens Aktiengesellschaft | Information detection circuit for information signal |
| EP3132540A1 (en) | 2014-04-15 | 2017-02-22 | BAE Systems PLC | Circuit state sensing |
| GB2525206A (en) * | 2014-04-15 | 2015-10-21 | Bae Systems Plc | Circuit state sensing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4528856Y1 (en) * | 1966-04-19 | 1970-11-06 |
-
1982
- 1982-02-16 JP JP57023385A patent/JPS58141029A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4528856Y1 (en) * | 1966-04-19 | 1970-11-06 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021251105A1 (en) | 2020-06-12 | 2021-12-16 | 日鉄ケミカル＆マテリアル株式会社 | Catalyst carrying base material and catalyst converter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58141029A (en) | 1983-08-22 |
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