JPH0348942U - - Google Patents
Info
- Publication number
- JPH0348942U JPH0348942U JP1989109474U JP10947489U JPH0348942U JP H0348942 U JPH0348942 U JP H0348942U JP 1989109474 U JP1989109474 U JP 1989109474U JP 10947489 U JP10947489 U JP 10947489U JP H0348942 U JPH0348942 U JP H0348942U
- Authority
- JP
- Japan
- Prior art keywords
- main line
- communication medium
- abnormality
- branch
- detection device
- 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
- 230000005856 abnormality Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Description
第１図は本考案の構成ブロツク図、第２図及び
第３図は分岐器の構成例を示す構成図、第４図は
従来の通信システムの構成を示す構成図である。
１０……幹線異常検出装置、１１……抵抗、１
２……定電流源、１３……幹線導通監視部、１４
……コンデンサ、２０ａ〜２０ｄ……分岐器、２
１ａ〜２１ｄ……支線、２２ａ〜２２ｄ……ステ
ーシヨン、２３……終端抵抗。
FIG. 1 is a configuration block diagram of the present invention, FIGS. 2 and 3 are configuration diagrams showing an example of the configuration of a branching switch, and FIG. 4 is a configuration diagram showing the configuration of a conventional communication system. 10... Main line abnormality detection device, 11... Resistor, 1
2... Constant current source, 13... Main line continuity monitoring section, 14
... Capacitor, 20a-20d ... Branch, 2
1a to 21d...branch lines, 22a to 22d...stations, 23...terminal resistors.
Claims (1)
線１に接続された複数の支線と、それぞれの支線
に接続されたステーシヨンとを備えた通信システ
ムの幹線１の異常を検出するための通信媒体異常
検出装置であつて、 幹線１に一定の電流を供給する電流源１２と、 電流源１２から幹線１に供給された電流の値を
検出することにより幹線１の異常を検出する幹線
導通監視部１３とを備えたことを特徴とする通信
媒体異常検出装置。[Claims for Utility Model Registration] A main line 1 of a communication system comprising a main line 1, a plurality of branch lines connected to the main line 1 via direct current passing type branch switches, and a station connected to each branch line. A communication medium abnormality detection device for detecting an abnormality in a main line 1, which comprises: a current source 12 that supplies a constant current to the main line 1; and a current source 12 that supplies a constant current to the main line 1; A communication medium abnormality detection device comprising: a main line continuity monitoring section 13 for detecting an abnormality in a communication medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989109474U JPH0348942U (en) | 1989-09-19 | 1989-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989109474U JPH0348942U (en) | 1989-09-19 | 1989-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0348942U true JPH0348942U (en) | 1991-05-13 |
Family
ID=31658070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989109474U Pending JPH0348942U (en) | 1989-09-19 | 1989-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0348942U (en) |
-
1989
- 1989-09-19 JP JP1989109474U patent/JPH0348942U/ja active Pending
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