JPS6324452Y2 - - Google Patents
Info
- Publication number
- JPS6324452Y2 JPS6324452Y2 JP12054681U JP12054681U JPS6324452Y2 JP S6324452 Y2 JPS6324452 Y2 JP S6324452Y2 JP 12054681 U JP12054681 U JP 12054681U JP 12054681 U JP12054681 U JP 12054681U JP S6324452 Y2 JPS6324452 Y2 JP S6324452Y2
- Authority
- JP
- Japan
- Prior art keywords
- signal line
- circuit
- signal
- detection
- disconnection
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 39
- 238000000034 method Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
【考案の詳細な説明】
本考案は、信号線路の断線を検出する回路に関
するものである。[Detailed Description of the Invention] The present invention relates to a circuit for detecting disconnection of a signal line.
従来の、この種の断線検出回路例を第1図に示
す。図において、1は断線検出対象の信号線路、
2及び3は信号線路により接続される装置、4及
及び5は、断線検出回路を示す。 An example of a conventional disconnection detection circuit of this type is shown in FIG. In the figure, 1 is the signal line to be detected for disconnection;
2 and 3 are devices connected by a signal line, and 4, 5, and 5 are disconnection detection circuits.
信号線路1の断線の有無を検出するための動作
は、次の様になる。まず、切替リレー41及び5
1により信号線路1が装置側から切離されて、検
出回路の出力部42及び入力部53に接続され
る。次に出力部42より検出信号Aを出力し、入
力部53より検出信号Dを入力する。この時検出
信号Dが有れば線路は正常であり、検出信号Dが
無ければ断線と判断する。 The operation for detecting the presence or absence of a break in the signal line 1 is as follows. First, switching relays 41 and 5
1, the signal line 1 is separated from the device side and connected to the output section 42 and input section 53 of the detection circuit. Next, the detection signal A is outputted from the output section 42, and the detection signal D is inputted from the input section 53. At this time, if the detection signal D is present, the line is normal, and if there is no detection signal D, it is determined that the line is disconnected.
しかし、この回路構成の場合、出力部42又
は入力部53が故障した場合、信号線路1の断線
と区別出来ない、線路にダイオード等が接続さ
れており、方向性がある場合、順方向及び逆方向
の確認が出来ない、等の問題があつた。 However, in the case of this circuit configuration, if the output section 42 or the input section 53 fails, it cannot be distinguished from a break in the signal line 1.If a diode or the like is connected to the line, and there is directionality, the forward and reverse There were problems such as not being able to confirm the direction.
本考案の目的は、上記問題点を解決し、信号線
路自体の断線と検出回路の故障の区別、及び信号
線路に方向性がある場合にその方向の確認が出来
る様にした断線検出回路を提供することにある。 The purpose of the present invention is to solve the above-mentioned problems and provide a disconnection detection circuit that can distinguish between a disconnection in the signal line itself and a failure in the detection circuit, and confirm the direction if the signal line has directionality. It's about doing.
上記目的を達成させる為、本考案による断線検
出回路は、任意の装置と装置間を接続する信号線
路の両端にそれぞれが接続され、前記信号線路の
一側から前記信号線路を介して検出信号を送出
し、他側における前記検出信号の検出の有無に基
づいて前記信号線路の断線を検出する断線検出回
路において、前記各側の断線検出回路は、前記検
出信号を発生する回路と、前記発生された検出信
号を検出することにより当該断線検出回路の故障
の有無を検出する回路と、前記信号線路を介して
送出された検出信号を検出する回路とを備えて成
る。 In order to achieve the above object, the disconnection detection circuit according to the present invention is connected to both ends of a signal line connecting arbitrary devices, and receives a detection signal from one side of the signal line via the signal line. In the disconnection detection circuit that detects a disconnection of the signal line based on the presence or absence of detection of the detection signal on the other side, the disconnection detection circuit on each side includes a circuit that generates the detection signal, and a circuit that generates the detection signal. The circuit includes a circuit that detects whether or not there is a failure in the disconnection detection circuit by detecting a detection signal generated by the signal line, and a circuit that detects the detection signal sent out via the signal line.
次に、本考案の実施例について第2図を参照し
て説明する。図における符号は第1図と同じであ
る。検出回路4及び5は出力部(42及び52)
と入力部(43及び53)とを含む同一回路であ
る。 Next, an embodiment of the present invention will be described with reference to FIG. The reference numerals in the figure are the same as in FIG. Detection circuits 4 and 5 are output parts (42 and 52)
and input sections (43 and 53).
この回路の動作は次のとおりである。信号線路
1の断線の有無を検出するために、まず切替リレ
ー41及び51により、信号線路1が装置2及び
3より切離されて、検出回路4及び5に接続され
る。次に検出回路4自体の故障の有無を、出力部
42からの出力信号が入力部43より入力される
ことにより確認する。検出回路5についても同様
に行なう。 The operation of this circuit is as follows. In order to detect whether or not the signal line 1 is disconnected, the signal line 1 is first disconnected from the devices 2 and 3 and connected to the detection circuits 4 and 5 by the switching relays 41 and 51. Next, the presence or absence of a failure in the detection circuit 4 itself is checked by inputting the output signal from the output section 42 through the input section 43. The same process is performed for the detection circuit 5.
検出回路4,5自体に故障がないことを確認し
た後の、信号線路1の断線検出は以下の様に行な
う。出力部42より検出信号Aを出力し、入力部
53より入力する。次に出力部52より検出信号
Cを出力し、入力部43より入力する。この結果
により信号線路1の状態を判断することが出来
る。即ち、いずれの場合にも入力信号が有る場合
は信号線路1は、正常である。どちらか一方の入
力信号がある場合は断線していないか方向性があ
る。いずれの入力信号も無い場合は、断線であ
る。 After confirming that there is no failure in the detection circuits 4 and 5 themselves, disconnection of the signal line 1 is detected as follows. The detection signal A is outputted from the output section 42 and inputted from the input section 53. Next, the detection signal C is outputted from the output section 52 and inputted from the input section 43. Based on this result, the state of the signal line 1 can be determined. That is, in any case, if there is an input signal, the signal line 1 is normal. If there is an input signal on either side, there is either a disconnection or there is directionality. If there is no input signal, there is a disconnection.
本発明は以上説明したように、信号線路の両端
に断線検出信号の出力部と入力部とを含む同一回
路を用いることにより、
検出回路の故障と信号線路の断線を正確に区
別出来る。 As explained above, according to the present invention, by using the same circuit including the output section and the input section for the disconnection detection signal at both ends of the signal line, it is possible to accurately distinguish between a failure in the detection circuit and a disconnection in the signal line.
信号線路が、ダイオード等により方向性を持
つ場合、その方向の確認が出来る。 If the signal line has directionality due to a diode or the like, the direction can be confirmed.
信号線路の両端に同一の回路を使用するの
で、回路の共通化が計れる。 Since the same circuit is used at both ends of the signal line, the circuit can be shared.
等の効果がある。There are other effects.
第1図は、従来の回路例、第2図は、本考案の
実施回路例を示す。
1……信号線路、2及び3……信号線路により
接続される装置、4及び5……断線検出回路、4
1及び51……切替リレー、42及び52……出
力部、43及び53……入力部、A及びC……出
力信号、B及びD……入力信号。
FIG. 1 shows an example of a conventional circuit, and FIG. 2 shows an example of an implementation circuit of the present invention. 1... Signal line, 2 and 3... Device connected by the signal line, 4 and 5... Disconnection detection circuit, 4
1 and 51...Switching relay, 42 and 52...Output section, 43 and 53...Input section, A and C...Output signal, B and D...Input signal.
Claims (1)
にそれぞれが接続され、前記信号線路の一側から
前記信号線路を介して検出信号を送出し、他側に
おける前記検出信号の検出の有無に基づいて前記
信号線路の断線を検出する断線検出回路におい
て、前記各側の断線検出回路は、前記検出信号を
発生する回路と、前記発生された検出信号を検出
することにより当該断線検出回路の故障の有無を
検出する回路と、前記信号線路を介して送出され
た検出信号を検出する回路とを備えて成ることを
特徴とする断線検出回路。 Each is connected to both ends of a signal line connecting any device and the device, and a detection signal is sent from one side of the signal line via the signal line, and based on whether or not the detection signal is detected on the other side. In the disconnection detection circuit that detects a disconnection in the signal line, the disconnection detection circuit on each side includes a circuit that generates the detection signal, and detects a failure of the disconnection detection circuit by detecting the generated detection signal. A disconnection detection circuit comprising: a circuit for detecting presence or absence; and a circuit for detecting a detection signal sent out via the signal line.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12054681U JPS5826677U (en) | 1981-08-13 | 1981-08-13 | Disconnection detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12054681U JPS5826677U (en) | 1981-08-13 | 1981-08-13 | Disconnection detection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5826677U JPS5826677U (en) | 1983-02-21 |
JPS6324452Y2 true JPS6324452Y2 (en) | 1988-07-05 |
Family
ID=29914546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12054681U Granted JPS5826677U (en) | 1981-08-13 | 1981-08-13 | Disconnection detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5826677U (en) |
-
1981
- 1981-08-13 JP JP12054681U patent/JPS5826677U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5826677U (en) | 1983-02-21 |
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