JPS5451860A - Detection system of service interruption of terminal units in telemeter system - Google Patents
Detection system of service interruption of terminal units in telemeter systemInfo
- Publication number
- JPS5451860A JPS5451860A JP11804477A JP11804477A JPS5451860A JP S5451860 A JPS5451860 A JP S5451860A JP 11804477 A JP11804477 A JP 11804477A JP 11804477 A JP11804477 A JP 11804477A JP S5451860 A JPS5451860 A JP S5451860A
- Authority
- JP
- Japan
- Prior art keywords
- thru
- terminal units
- constitution
- voltage sources
- frequency
- 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
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
- Selective Calling Equipment (AREA)
Abstract
PURPOSE: To simplify the entire constitution by providing voltage sources of a small capactity on the terminal unit side.
CONSTITUTION: Voltage sources 111 thru 11n of a samll capacity composed of batteries, etc. are provided to terminal units 11 thru 1n so that in the event of service interruption voltages are supplied to the frequency transmitters 121 thru 12n which transmit common frequencies. Then at the normal time the terminal units 11 thru 1n and a central unit 5 perform transmission and reception of data through controlling of the relay contacts 131 thru 13n of a circuit scanning part 14 by way of signal transmission parts 31 thru 3n and 7. When any of the terminal units 11 thru 1n is interrupted of power supply, the corresponding voltage sources 111 thru 11n actuate the corresponding frequency transmitters 121 thur 12n, and a frequency receiver 15 is driven to actuate a relay 16, then power interruption signal is drawn out in output terminals 171 thru 17n. Hence, only one frequency transmitter 15 on the central unit 5 side is necessitated and the constitution is simplified
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11804477A JPS5451860A (en) | 1977-09-30 | 1977-09-30 | Detection system of service interruption of terminal units in telemeter system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11804477A JPS5451860A (en) | 1977-09-30 | 1977-09-30 | Detection system of service interruption of terminal units in telemeter system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5451860A true JPS5451860A (en) | 1979-04-24 |
Family
ID=14726636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11804477A Pending JPS5451860A (en) | 1977-09-30 | 1977-09-30 | Detection system of service interruption of terminal units in telemeter system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5451860A (en) |
-
1977
- 1977-09-30 JP JP11804477A patent/JPS5451860A/en active Pending
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