System and Method for Fire Preventing in Electrical Installations

• US 20130342352A1
• Filed: 09/28/2011
• Published: 12/26/2013
• Est. Priority Date: 09/30/2010
• Status: Active Grant

• Current Assignee: Heimdall Power AS
• Original Assignee: Gantel Properties Limited
• Inventors: Knoop, Kjell
• Granted Patent: US 9,251,682 B2
• Time in Patent Office: Days
• US Class Current: 340/584
• CPC Class Codes: G01K 1/026 arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
• CPC Class Codes: G01K 3/005 Circuits arrangements for indicating a predetermined temperature fire detection G08B17/00
• CPC Class Codes: G08B 17/06 Electric actuation of the alarm, e.g. using a thermally-operated switch
• CPC Class Codes: H02H 5/04 responsive to abnormal temperature specially adapted for electric machines H02H7/0852
• CPC Class Codes: H02H 7/00 Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions

Abstract

A system for fire prevention in electrical installations comprises one or more temperature sensors arranged in or close to positions in the electrical installation that are to be monitored, one or more electromagnetic signal transmitters connected to the temperature sensors, one or more electromagnetic signal readers adapted to communicate with and receive signals from the signal transmitters, and a processing unit connected to the signal reader for processing the signals and providing an indication signal.

Claims

1. A system for fire prevention in electrical installations,

characterised in that the system comprises:

one or more temperature sensors arranged in or close to positions in the electrical installation that are to be monitored;

one or more electromagnetic signal transmitters connected to the temperature sensors and adapted to be able to transmit several temperature measurements at intervals;

one or more electromagnetic signal readers adapted to communicate with and receive signals from the signal transmitters; and

a processing unit connected to the signal reader to process the signals and provide an indication signal.

2. A system according to claim 1, characterised in that the electromagnetic signal transmitters are passive RFID chips.

3. A system according to claim 1, characterised in that the electromagnetic signal transmitters are active RFID chips.

4. A system according to claim 1, characterised in that the electromagnetic signal transmitters are semi-passive RFID chips.

5. A system according to claim 1, characterised in that each of the electromagnetic signal transmitters and temperature sensors are integrated in the same unit.

6. A system according to claim 1, characterised in that the electromagnetic signal transmitters comprise a memory and are able to store data.

7. A system according to claim 1, characterised in that it comprises a display unit for displaying the indication signal or information derived therefrom.

8. A system according to claim 1, characterised in that it comprises an alarm that is triggered when the temperature measurement exceeds a pre-determined threshold value.

9. A method for fire prevention in electrical installations,

characterised in that it comprises:

placing one or more temperature sensors in or close to positions that are to be monitored in the electrical installation;

measuring temperature and transmitting electromagnetic signals at intervals with the aid of one or more signal transmitters connected to the temperature sensors;

receiving the electromagnetic signal with the aid of one or more signal readers adapted to communicate with and receive signals from the signal transmitters; and

processing the signals to provide an indication signal.

10. A method according to claim 9, characterised by

storing data in the signal transmitters.

11. A method according to claim 9, characterised in that it comprises displaying the indication signal or information derived therefrom.

12. A method according to claim 9, characterised in that an alarm is triggered when the temperature measurement exceeds a pre-determined threshold value.

13. A method according to claim 9, characterised in that it comprises two alarm levels.