JPH04249959A - Remote supervisory system - Google Patents
Remote supervisory systemInfo
- Publication number
- JPH04249959A JPH04249959A JP33223690A JP33223690A JPH04249959A JP H04249959 A JPH04249959 A JP H04249959A JP 33223690 A JP33223690 A JP 33223690A JP 33223690 A JP33223690 A JP 33223690A JP H04249959 A JPH04249959 A JP H04249959A
- Authority
- JP
- Japan
- Prior art keywords
- remote supervisory
- telephone line
- line
- master set
- self
- 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
- 230000005540 biological transmission Effects 0.000 abstract 2
Abstract
PURPOSE: To attain the self-check by bringing the operation into the telephone line self-check operation for each prescribed period, bringing other remote supervisory equipment into the self-check operation through inter-equipment transmission and connecting a telephone line interface.
CONSTITUTION: A call from a telephone network reaches only a remote supervisory equipment 30a as a master set via a line disconnection relay contact Q connecting in series with a telephone line 4. Moreover, a remote supervisory equipment 30b as a slave set is connected in parallel with the telephone line 4 via the line disconnecting relay contact Q at a master set. Then the master set 30a is connected based on the communication via an inter-equipment transmission interface 35 and the control of the line connection control relay contact P for each prescribed time by the master set 30a and the telephone line is checked between the remote supervisory equipments 30a,3Ob in a same building.
COPYRIGHT: (C)1992,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33223690A JPH04249959A (en) | 1990-11-29 | 1990-11-29 | Remote supervisory system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33223690A JPH04249959A (en) | 1990-11-29 | 1990-11-29 | Remote supervisory system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04249959A true JPH04249959A (en) | 1992-09-04 |
Family
ID=18252703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP33223690A Pending JPH04249959A (en) | 1990-11-29 | 1990-11-29 | Remote supervisory system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04249959A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005084863A (en) * | 2003-09-08 | 2005-03-31 | Saxa Inc | Monitoring/reporting system |
-
1990
- 1990-11-29 JP JP33223690A patent/JPH04249959A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005084863A (en) * | 2003-09-08 | 2005-03-31 | Saxa Inc | Monitoring/reporting system |
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