JPH012271A - Cable connection monitoring circuit - Google Patents
Cable connection monitoring circuitInfo
- Publication number
- JPH012271A JPH012271A JP62-158248A JP15824887A JPH012271A JP H012271 A JPH012271 A JP H012271A JP 15824887 A JP15824887 A JP 15824887A JP H012271 A JPH012271 A JP H012271A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- cable
- resistor
- voltage
- power supply
- 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
- 238000012544 monitoring process Methods 0.000 title claims description 12
- 238000010586 diagram Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 102220013118 rs397516477 Human genes 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は複数のケーブルによって接続される機器のケー
ブル誤接続の防止構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure for preventing incorrect cable connections of equipment connected by a plurality of cables.
［従来の技術］
従来、この種のケーブル誤接続防市策としては、ケーブ
ルの束線による方法や、接続コネクタの識別ラベルを貼
付する方法等があった。[Prior Art] Conventionally, as city measures to prevent this type of cable connection error, there have been methods such as bundling cables and pasting identification labels on connectors.
［発明が解決しようとする問題点］
しかし、上）ホした従来の方法では人為的なミスにより
誤接続が発生し、場合によっては異常電圧が印加され電
子回路が破壊することもあるという重大な欠点がある。[Problems to be solved by the invention] However, with the conventional method (e) above, human error may cause incorrect connections, and in some cases, abnormal voltage may be applied and electronic circuits may be destroyed, which is a serious problem. There are drawbacks.
本発明の目的は前記問題点を解消したケーブル接続監視
回路を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a cable connection monitoring circuit that eliminates the above-mentioned problems.
［問題点を解決するための手段］
本発明は複数のケーブルによって接続される機器におい
て、各ケーブル中の１本のラインの一端に他端子を接地
した抵抗器の一端子を接続し、ケーブルの他端に他端子
を電源に接続した抵抗器の一端子を接続してこのライン
の電圧を監視する電圧監視手段と、該電圧監視手段の出
力によって表示を行う表示手段と、前記電圧監視手段の
出力によって起動、停止を行う電源回路とを含むことを
特徴とするケーブル接続監視回路′Ｃある。[Means for Solving the Problems] The present invention, in equipment connected by a plurality of cables, connects one terminal of a resistor whose other terminal is grounded to one end of one line in each cable. Voltage monitoring means for monitoring the voltage of this line by connecting one terminal of a resistor whose other terminal is connected to a power supply to the other end; display means for displaying an indication based on the output of the voltage monitoring means; There is a cable connection monitoring circuit 'C' characterized in that it includes a power supply circuit that starts and stops depending on the output.
［実施例］ 次に、本発明について図面を参照して説明する。[Example] Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例を示す回路図である。FIG. 1 is a circuit diagram showing one embodiment of the present invention.
回路ボート１と回路ボード４とは、復改のケーブルから
なるケーブル束２，３、コネクタ１１ａと１１ｂ、コネ
クタ１２ａと１２ｂとを介して接続される。The circuit board 1 and the circuit board 4 are connected via cable bundles 2 and 3 consisting of repeating cables, connectors 11a and 11b, and connectors 12a and 12b.
ケーブル束２，３のケーブル中の１本のラインに、回路
ボード１側で一端を接地した抵抗器１０および２０が接
続され、回路ボード４側で一端を電源上Ｖに接続した抵
抗器１１および２１が接続されると共に電圧比較器４１
．４２の第１の入力端子に接続される。Resistors 10 and 20 with one end grounded on the circuit board 1 side are connected to one line in the cables of the cable bundles 2 and 3, and resistors 11 and 20 with one end connected to the power supply V on the circuit board 4 side are connected. 21 is connected and the voltage comparator 41
．． 42 first input terminal.
電圧比較器４１の第２の入力端子には抵抗器１２゜１３
が接続され、抵抗器１２の他端は電源上Ｖに接続される
。電斤比較器旧の第３の入力端子には抵抗器１３．１４
が接続され、抵抗器１４の他端は接地される。A resistor 12゜13 is connected to the second input terminal of the voltage comparator 41.
is connected, and the other end of the resistor 12 is connected to V on the power supply. Resistor 13.14 is connected to the third input terminal of the old electric loaf comparator.
is connected, and the other end of the resistor 14 is grounded.
電圧比較器４２の第２．第３の入力端子にも電圧比較器
４１と同様に抵抗器２２．２３．２４が接続される。The second . Similarly to the voltage comparator 41, resistors 22, 23, and 24 are also connected to the third input terminal.
電圧比較器４１．４２の出力端子はアンド回路４３の入
力端子に接続され、アンド回路４３の出力端子は発光ダ
イオード４４のカソードに接続されると共に電源回路４
５の制御端子に接続される。発光ダイオード４４のアノ
ードは電源＋■接続される。The output terminals of the voltage comparators 41 and 42 are connected to the input terminals of the AND circuit 43, and the output terminals of the AND circuit 43 are connected to the cathode of the light emitting diode 44 and the power supply circuit 4.
It is connected to the control terminal of 5. The anode of the light emitting diode 44 is connected to the power supply +■.
第１図に示されるようなケーブルの接続が正常な場合で
あり、この場合の動作を以下に説明する。This is a case where the cable connection as shown in FIG. 1 is normal, and the operation in this case will be described below.
電圧比較器４１の第１の入力端子の電ＬＬは、電源＋Ｖ
＋を抵抗器１０．１１で分圧した値であり、このる。［
＜１０は抵抗器１０の抵抗値、１＜１１は抵抗器１１の
抵抗器である。電圧比較器旧の第２．第３の入力端子は
基準電位を印加づる端子であり、第２の人の抵抗値、Ｒ
１４は抵抗器１４の抵抗値である。The voltage LL at the first input terminal of the voltage comparator 41 is the power supply +V.
This is the value obtained by dividing + by resistor 10.11. [
<10 is the resistance value of resistor 10, and 1<11 is the resistance value of resistor 11. Voltage comparator old 2nd. The third input terminal is a terminal to which a reference potential is applied, and the resistance value of the second person, R
14 is the resistance value of the resistor 14.
第１の入力端子電圧Ｖｕが第２．第３０入り端子電圧Ｖ
１２とＶ１３の間に存在するように抵抗器１０〜１４の
抵抗値Ｒ１ｏ −Ｒ＋ｔ＋が設定される。The first input terminal voltage Vu is the second input terminal voltage Vu. 30th input terminal voltage V
The resistance values R1o -R+t+ of the resistors 10 to 14 are set to exist between V12 and V13.
電圧比較器４２も同様に第１．第２．第３の入力端子電
圧をそれぞれＶ２１ 、 Ｖ２２ 、 Ｖ２３とすると
Ｖ２１がＶ２２とＶ２３の間に存在する様にＲｚｏ ”
−Ｒ２４の値が設定される。Similarly, the voltage comparator 42 also has the first voltage. Second. Letting the third input terminal voltages be V21, V22, and V23, respectively, Rzo ” is set such that V21 is between V22 and V23.
- The value of R24 is set.
上記状態において電几比較器旧、４２の出力はアクデイ
プとなるためアンド回路４３の出力もアクティブとなる
。アンド回路４３の出力は電源回路４５を起動し、回路
ボード１および回路ボード４へ各種電源の供給を可能に
覆る。また、アンド回路４３の出力がアクティブのため
発光ダイオード４４には電流が流れず従って点灯もしな
い。尚、抵抗器１０と２０、または抵抗器１１と２１、
もしくは抵抗器１０゜１１と２０．２１の値は異なった
値に設定する。例えば抵抗器１０．１１を１にΩ、抵抗
器２０．２１を２にΩとし、＋Ｖを５ＶとＴ６とＶｕ＝
＋２．５Ｖ、Ｖ２１＝＋２．５Ｖになる。In the above state, the output of the electric comparator 42 becomes active, so the output of the AND circuit 43 also becomes active. The output of the AND circuit 43 activates the power supply circuit 45, making it possible to supply various kinds of power to the circuit board 1 and the circuit board 4. Furthermore, since the output of the AND circuit 43 is active, no current flows through the light emitting diode 44, and therefore it does not light up. In addition, resistors 10 and 20, or resistors 11 and 21,
Alternatively, the values of resistors 10°11 and 20.21 are set to different values. For example, resistor 10.11 is set to 1Ω, resistor 20.21 is set to 2Ω, +V is 5V, T6 and Vu =
+2.5V, V21=+2.5V.
次にケーブルを誤って接続した場合について説明する。Next, the case where the cable is connected incorrectly will be explained.
ケーブル束２が回路ボード１のコネクタ１１ａと回路ボ
ード４のコネクタ１２ｂとの間に接続され、ケーブル束
３がこの逆にコネクタ１２ａとコネクタ１１ｂとの間に
接続された場合、電圧比較器４１の入圧比較器４２の入
力電圧Ｖ２＋は
抵抗器１０．１１．２０．２１の値を前述の値とすると
、ｖｌｌ＝＋３．３３ Ｖ、 Ｖ２＋ ＝＋ １．６６
Ｖドア３す、前述の正常な値Ｖ ｕ ＝ Ｖ２＋ ＝
＋２．５Ｖとは異なった値になるため、電圧比較器４
１．４２の出力はイナクティブになりアンド回路４３の
出力もイブクチイブになる。If the cable bundle 2 is connected between the connector 11a of the circuit board 1 and the connector 12b of the circuit board 4, and the cable bundle 3 is connected vice versa between the connector 12a and the connector 11b, the voltage comparator 41 The input voltage V2+ of the input pressure comparator 42 is vll=+3.33 V, V2+=+1.66, assuming that the values of the resistors 10.11.20.21 are the above values.
V door 3, the above normal value V u = V2+ =
Since the value is different from +2.5V, voltage comparator 4
The output of 1.42 becomes inactive, and the output of the AND circuit 43 also becomes active.
その結果アンド回路４３の出力は電源回路４５を起動し
ないため、各回路ボードへの電源供給が不能になり、同
時に発光ダイオード４４が点灯する。すなやち、発光ダ
イオード４４の点灯によりケーブルの誤接続を知らせる
と共に電源回路の起動を停止する。As a result, the output of the AND circuit 43 does not activate the power supply circuit 45, making it impossible to supply power to each circuit board, and at the same time, the light emitting diode 44 lights up. In other words, the light emitting diode 44 lights up to notify the user of the incorrect connection of the cable, and also stops the power supply circuit from starting up.
本実施例はケーブルが２本の場合を示しているが、ケー
ブルが３本以上ある場合でも同様に回路を追加すること
により本発明の目的を達成できる。Although this embodiment shows a case where there are two cables, the object of the present invention can be achieved even when there are three or more cables by adding a circuit.
［発明の効果］
以上説明したように本発明はケーブル中の一本のライン
を利用して一方は抵抗器を介し接地し、他方は抵抗器を
介して電源へ接続し、この抵抗器によって分１モされた
電圧を監視することにより、ケーブルの誤接続を察知し
て表示すると共に電源供給を停止することがＣぎるため
、ケーブルの誤接続を６イｒ実に防止できることおよび
誤接続があった場合でも電源供給を停止するため回路の
破壊等を確実に防止できるという効果がある。[Effects of the Invention] As explained above, the present invention utilizes one line in a cable, one line is grounded through a resistor, the other side is connected to the power source through a resistor, and the resistor connects the line to the power supply. By monitoring the voltage applied to the cable, it is possible to detect and display a cable misconnection and to stop the power supply, which can effectively prevent cable misconnections and prevent misconnections. Since the power supply is stopped even in such a case, damage to the circuit can be reliably prevented.
第１図は本発明の一実施例を示す回路図である。
１．４・・・回路ボード ２，３・・・ケーブル束１１
ａ、 １２ａ、 １１ｂ、 １２ｌ２ｂ−ネクタ４１、
４２・・・電圧比較器 ４３・・・アンド回路４４・
・・発光ダイオード ４５・・・電源回路１０〜１４
．２０〜２４・・・抵抗器FIG. 1 is a circuit diagram showing an embodiment of the present invention. 1.4...Circuit board 2,3...Cable bundle 11
a, 12a, 11b, 12l2b-connector 41,
42... Voltage comparator 43... AND circuit 44.
...Light emitting diode 45...Power supply circuit 10-14
．． 20-24...Resistor
Claims (1)
、各ケーブル中の１本のラインの一端に他端子を接地し
た抵抗器の一端子を接続し、ケーブルの他端に他端子を
電源に接続した抵抗器の一端子を接続してこのラインの
電圧を監視する電圧監視手段と、該電圧監視手段の出力
によつて表示を行う表示手段と、前記電圧監視手段の出
力によって起動、停止を行う電源回路とを含むことを特
徴とするケーブル接続監視回路。(1) In equipment connected by multiple cables, one terminal of a resistor with the other terminal grounded is connected to one end of one line in each cable, and the other terminal is connected to the power source at the other end of the cable. Voltage monitoring means for monitoring the voltage of this line by connecting one terminal of a resistor, display means for displaying an indication based on the output of the voltage monitoring means, and a power supply that starts and stops according to the output of the voltage monitoring means. A cable connection monitoring circuit comprising a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-158248A JPH012271A (en) | 1987-06-25 | Cable connection monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-158248A JPH012271A (en) | 1987-06-25 | Cable connection monitoring circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS642271A JPS642271A (en) | 1989-01-06 |
| JPH012271A true JPH012271A (en) | 1989-01-06 |
Family
ID=
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