The monitoring system for remote contactless diagnostics and control of automatic fire extinguishing devices for local protection of electrical devices

The monitoring system according to the claim 2 where the fire extinguishing device (3) contains the extinguishing medium carrier (3.1) in which the gas fire extinguishing medium is under pressure, the extinguishing medium carrier (3.1) is directly connected to the valve which contains a nozzle to release extinguishing medium from the carrier (3.1) to the closed protected space (4.1), further the fire extinguishing device (3) contains the pressure sensor (3.2) for detecting the state of the medium in the carrier (3.1), the third contact (3.13) for connecting an external power supply, the first temperature sensor (3.9), the second temperature sensor (3.10), that automatically monitors the temperature in the closed protected space (4.1) of the protected device (4), further the fire extinguishing device (3) also contains the backup battery (3.12) to which the coil (3.11) of the valve with a nozzle is connected, the coil is connected to the first temperature sensor (3.9) and to the second temperature sensor (3.10) characterized in that the fire extinguishing device (3) father contains the monitoring processor (3.3), which is connected to the second evaluation unit (3.5), the second evaluation unit (3.5) is connected with the second wireless communication module (3.4), the monitoring processor (3.3) is connected to the fifth contact (3.17) for the connecting of the position sensor of the fire extinguishing device (3), further with the fourth contact (3.16) for the connecting of the door sensor of the closed protected space (4.1), further with the universal input (3.15) for the monitoring of the control unit (2.1) of the control center (2), further with the end switch (3.14) for checking the contact of the fire extinguishing device (3) with the DIN rail, further the fire extinguishing device (3) contains the first contact (3.6) for connecting of the temperature linear cable (4.3) which is connected with the coil (3.11) of the valve with the nozzle, wherein the temperature linear cable (4.3) is arranged in the closed protected space (4.1), the coil (3.11) of the valve with the nozzle is connected to the second contact (3.8) for connecting of the smoke sensor (4.5), which is arranged in the closed protected space (4.1), the coil (3.11) is further connected to the first temperature sensor (3.9) and the second temperature sensor (3.10), further the fire extinguishing device (3) is connected with the connector (3.7) for the LAN chip, in order to improve the safety, the fire extinguishing device (3) further contains a temperature glass ampoule (3.18) as a passive temperature sensor, which is connected to the extinguishing medium carrier (3.1) in such a way that it is partially embedded in the carrier, for example screwed, the fire extinguishing device (3) shows, thanks to the temperature glass ampoule (3.18), an extinguishing function even without any energy (discharged battery, non-functional wireless communication.

The method of the remote contactless diagnostics and control of automatic fire extinguishing devices (3) for the local protection of electrical devices according to the claim 2 characterized in that the method takes place in the following steps:

• checking the connectivity of the fire extinguishing device (3) with the wireless connection of the LAN, NB-IoT takes place in such a way if the fire extinguishing device (3) does not respond in the defined time interval to the control center (2) using the wireless network LAN NB-IoT, an error message is reported to the control center (2)
• checking of the electrical circuits of the system takes place automatically using the monitoring processor (3.3)
• checking the loss of the connectivity of the fire extinguishing device (3) with the temperature linear cable (4.3), which is arranged in the closed protected space (4.1) and is connected to the fire extinguishing device (3), with the help of the resistor (4.4) connected in the circuit of the temperature linear cable (4.3) as resistance and by connecting to the second evaluation unit (3.5) the measured current drop or voltage drop is evaluated and the second wireless communication module (3.4) transmits the information to the control center (2)
• checking of the decrease in the amount of extinguishing medium in the extinguishing medium carrier (3.1) is carried out using a pressure sensor (3.2), which is arranged in the extinguishing medium carrier (3.1), wherein the pressure sensor (3.2) periodically verifies the pressure of the extinguishing medium in the extinguishing medium carrier (3.1), the pressure value of the extinguishing medium is sensed by the monitoring processor (3.3) and subsequently this information is transmitted to the second wireless communication module (3.4) and via the IoT network is transmitted to the control center (2) if the leakage of the extinguishing medium is detected
• the temperature in the closed protected space (4.1) is continuously measured by two independent temperature sensors, by the first temperature sensor (3.9) and by the second temperature sensor (3.10), wherein the difference between the temperature values of the first temperature sensor (3.9) and the second temperature sensor (3.10) is detected by remote checks and then the failure of one of them is evaluated and the failure is reported to the control center (2),
• The coil (3.11) of the valve with a nozzle, for example a solenoid valve, is monitored by a constant weak current, and its failure or disconnection is remotely reported to the control center (2),
• The backup battery (3.12) voltage is monitored by the monitoring processor (3.3) and any drop below the normal level is remotely reported to the control center (2),
• The failure of the external power supply is monitored by the monitoring processor (3.3) via the third contact (3.13) for connecting the external power supply, and the transition to the backup battery (3.12) is remotely reported to the control center (2),
• The door contact of the closed protected space (4.1) is monitored by a door sensor (4.2), for example by an induction sensor, and the opening of the door of the closed protected space (4.1) is remotely reported to the control center (2)
• To check the correct position of the fire extinguishing device (3) in the closed protected space (4.1), a position control sensor is arranged in the fire extinguishing device (3) using the fifth contact (3.17), the result is reported to the control center (2),
• the contact of the fire extinguishing device (3) with the mounting DIN rail in the closed protected space (4.1) is monitored via the end switch (3.14), the release of the fire extinguishing device (3), the case of manipulation of the fire extinguishing device (3) is remotely reported to the control center (2),
• The protected device (4) can be monitored through the universal input (3.15), Terminals connected—protected device (4) is all right, terminals disconnected-remotely reported error to the control center (2),
• checking the functionality of the smoke sensor (4.5) and checking the integrity of the closed protected space (4.1) requires physical presence, checking the connection of the smoke sensor (4.5) is carried out by a regular check, the system (1) switches remotely from the control center (2),
• (2) to the testing mode, the activation of the smoke sensor (4.5) is performed by the test spray and the result is reported via the IoT network to the control center (2),
• all the results of checks and measurements are continuously signaled in the control center (2)—optically shown on the display of the information module (2.4) and at the same time there is also a sound signal of possible failures,
• a protocol/revision report (2.5) with all results is still available in the control center (2), and, in accordance with the relevant standard, the protocol (2.5) on the fire safety operability of the fire extinguishing device (3), containing all measured values, is reported electronically to the operator (4.0) of protected device.