FIELD: communication facilities.
SUBSTANCE: invention concerns industrial communications and can be applied in operational dispatch management at coal mines. System of remote indication in mines operates over occupied phone pair when analogue speech signal in it disappears. Remote mechanical devices are connected to the common communication line automatically when voltage level in line changes. Speech signals have priority.
EFFECT: cost efficiency due to reduction of the number of communication lines set in complicated underground conditions.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR COLLECTING, TRANSMITTING AND RECEIVING INFORMATION | 0 |
|
SU920810A1 |
| DEVICE FOR SHAFT REMOTE INDICATION | 0 |
|
SU919108A1 |
| REMOTE CONTROL SYSTEM | 0 |
|
SU1152015A1 |
| TELEPHONE COMMUNICATIONS SWITCH | 2008 |
|
RU2380851C1 |
| 0 |
|
SU436375A1 | |
| TELECOMMUNICATIONS ACCESS SYSTEM FOR RAILWAY INFRASTRUCTURE FACILITIES ON THE RAILWAY SECTION TO STATION EQUIPMENT | 2021 |
|
RU2753987C1 |
| SYSTEM FOR MINE SUPERVISORY INDICATION WITH REMOTE POWER SUPPLY | 0 |
|
SU1243141A1 |
| MINE SUPERVISORY INDICATION SYSTEM WITH REMOTE POWER SUPPLY TO TRANSDUCERS | 0 |
|
SU1220131A1 |
| DEVICE FOR REMOTE CONTROL AND TELEMETRY | 1995 |
|
RU2111545C1 |
