KR102752163B1 - Fire detection monitoring method for generators - Google Patents

Abstract

The purpose of the present invention to solve the above-described problem is to provide a fire detection monitoring method of a generator capable of preventing frequent malfunctions of a fire detector installed on the upper part of a high-temperature gas turbine of a generator and monitoring the operating status in detail in real time.
According to the present invention for solving the above-described problem, a fire detection monitoring method of a generator comprises: (a) a step in which a monitoring board installed on a control panel of a fire monitoring system receives detection signals of a plurality of fire detectors installed in a plurality of zones in a power plant generator and a voltage signal applied to the fire detectors for each zone; (b) a step in which the monitoring board determines the operation status of the fire detectors for each zone according to a voltage signal range classified by presetting the received voltage signals and generating operation status information of the determined fire detectors; and (c) a step in which a central control device controls, monitors, and integrally manages the fire monitoring system based on the received fire detection signals and the operation status information.

Description

{Fire detection monitoring method for generators}

The present invention relates to a fire detection monitoring method, and more particularly, to a fire detection monitoring method of a generator capable of preventing frequent malfunctions of a fire detector installed on the upper part of a high-temperature gas turbine of a generator and monitoring thermal imaging images and CCTV images of a fire surveillance area and the operating status information of a fire detector in real time in detail.

Electric energy consumption in the country is increasing every year, especially in densely populated areas such as metropolitan areas. This means that the possibility of fires caused by electrical factors is increasing.

Among the causes of domestic fires, carelessness accounts for the largest proportion, followed by electrical fires. The main types of fires caused by electrical factors include short circuits, ground faults, leakage currents, overload overcurrents, poor contact, tracking, and short circuits. To protect electrical equipment and human life from these factors, protective devices such as circuit breakers, leakage circuit breakers, overcurrent relays, and leakage current alarms are installed and operated.

However, when a fire is caused by electrical factors, automatic fire detection equipment does not recognize it in advance and only reports the fire by detecting changes in heat, smoke, flames, etc. through detectors after it has developed into a fire, which always causes problems in that it cannot respond in the early stages of a fire.

In this way, although many fires are caused by electrical factors, there is a problem in that it is very vulnerable in terms of prevention in case of fire caused by factors such as short circuits, ground faults, and overcurrents because it does not operate in conjunction with electrical equipment.

In particular, in the case of electronic circuit boards for monitoring conventional fire detectors in high-temperature or special environments such as gas turbines in power plants, there is a problem in that signals are transmitted by distinguishing only simple operation/normal states, so that fire detectors frequently malfunction due to voltage instability, low voltage, overvoltage, and short circuits even when no fire actually occurs.

Republic of Korea Patent Publication No. 10-1563417 (Registration date: October 20, 2015) Republic of Korea Patent Publication No. 10-1719722 (Registration date: March 20, 2017)

The purpose of the present invention to solve the above-described problem is to provide a fire detection monitoring method of a generator capable of preventing frequent malfunctions of a fire detector installed on the upper part of a high-temperature gas turbine of a generator and monitoring the operating status in detail in real time.

In addition, an object of the present invention is to provide a fire detection monitoring method of a generator which can accurately monitor various operating states of a fire detector, detect failures early, integrate with various sensors, effectively process signals, and effectively transmit monitoring information on the operating state internally and externally.

Furthermore, the purpose of the present invention is to provide a multi-faceted approach combining advanced thermal imaging, deep learning analysis of CCTV footage, comprehensive monitoring of fire detectors across multiple zones, and an intuitive central control unit to provide a robust and reliable fire detection monitoring method for early detection and prevention of fires in high-risk environments such as power plant turbines.

According to the present invention for solving the above-described problem, a fire detection monitoring method of a generator comprises: (a) a step in which a monitoring board installed on a control panel of a fire monitoring system receives detection signals of a plurality of fire detectors installed in a plurality of zones in a power plant generator and a voltage signal applied to the fire detectors for each zone; (b) a step in which the monitoring board determines the operation status of the fire detectors for each zone according to a voltage signal range classified by presetting the received voltage signals and generating operation status information of the determined fire detectors; and (c) a step in which a central control device controls, monitors, and integrally manages the fire monitoring system based on the received fire detection signals and the operation status information.

In addition, in the fire detection monitoring method of a generator according to the present invention, the step (a) is characterized by including a step in which the monitoring board receives a voltage signal applied to each fire detector of each zone from a receiver connected in parallel with a plurality of fire detectors installed in each zone of the power plant generator.

In addition, in the fire detection monitoring method of a generator according to the present invention, the step (a) is characterized in that it includes a step of receiving, by the monitoring board, a voltage signal applied to each fire detector for each zone from a first receiver and a second receiver connected in parallel with a plurality of fire detectors installed for each zone in the power plant generator, in a duplicated manner.

In addition, in the fire detection monitoring method of a generator according to the present invention, the operating state is characterized by including at least one of normal, low voltage, overvoltage, fire detection, and short-circuit states as an operating state of the fire detector.

In addition, in the fire detection monitoring method of a generator according to the present invention, the step (b) is characterized by including: (b1) a step in which the operation status determination unit of the monitoring board determines the operation status of the fire detector according to a voltage signal range that is preset and classified based on the received voltage signal; and (b2) a step in which the operation status output unit displays operation status information of the fire detector determined by the operation status determination unit.

In addition, in the fire detection monitoring method of a generator according to the present invention, the step (b1) is characterized by including a step in which the operation status analysis unit analyzes which range of the voltage signal range the received voltage signal corresponds to among the preset and classified voltage signal ranges, determines the operation status of the fire detector according to the classified voltage signal range, and generates operation status information; and a step in which the signal processing unit converts a digital signal for the operation status information into an analog signal.

In addition, in the fire detection monitoring method of a generator according to the present invention, the step (b1) is characterized by including a step of determining the fire detector as being in a normal state when the received voltage signal falls within a voltage range of 15 V to 23.5 V, a step of determining the fire detector as being in a fault state when the received voltage signal falls within a voltage range of 7 V to 14.9 V and 23.6 V to 25.5 V, and a step of determining the fire detector as being in an open state when the received voltage signal falls within a voltage range of 25.6 V or higher.

In addition, in the fire detection monitoring method of a generator according to the present invention, the step (b) is characterized by including a step in which an internal alarm unit displays the operation status of the fire detector through a plurality of LEDs installed on the monitoring board according to the operation status information, and a step in which an external output unit transmits the operation status information to the central control device.

In addition, in the fire detection monitoring method of the generator according to the present invention, the step (c) is characterized by including: (c1) a step of receiving an image of a thermal imaging camera installed in an installation area of the fire detector and outputting thermal imaging monitoring information; (c2) a step of receiving an image of a CCTV camera installed in an installation area of the fire detector and outputting CCTV monitoring information; (c3) a step of outputting fire detector monitoring information for the received operation status information by a fire detector status unit; and (c3) a step of recording and storing real-time log information on event information when an event of the fire detector occurs.

And, in order to solve the above-described task, the present invention is characterized by a computer program stored in a medium for executing the fire detection monitoring method of the generator described above on a computer.

Specific details of other embodiments are included in the “Specific Details for Carrying Out the Invention” and the attached “Drawings.”

The advantages and/or features of the present invention and the methods for achieving them will become apparent with reference to the various embodiments described in detail below together with the accompanying drawings.

However, the present invention is not limited to the configuration of each embodiment disclosed below, but may be implemented in various different forms, and each embodiment disclosed in this specification is provided only to make the disclosure of the present invention complete, and to fully inform a person having ordinary skill in the art to which the present invention belongs of the scope of the present invention, and it should be understood that the present invention is defined only by the scope of each claim of the claims.

This method of monitoring the fire detector of a generator has the following effects:

1) According to the present invention, a fire detection monitoring method can be provided in which multiple zones within a generator can be monitored, so that a specific fire can be targeted and detected, thereby improving the overall safety of the power plant, and a detection board for each zone can be provided to closely observe and manage the specific status of each zone.

2) According to the present invention, by using a thermal imaging camera, a high temperature environment can be monitored in real time, abnormal temperature rises that may indicate a fire risk can be detected early, and temperature changes over time can be monitored to help determine whether there is an abnormality in equipment, thereby providing a fire detection monitoring method that is effective for fire prevention.

3) According to the present invention, a fire detection monitoring method is provided that enables early detection of smoke or fire by visually monitoring the internal state of a generator through integration of a CCTV camera, and automatically detects sparks and smoke by using deep learning in CCTV image analysis to identify fire hazards before they expand.

4) According to the present invention, detailed status information on fire detectors in each zone is provided to enhance the response capability to potential fire accidents, and a new receiver is introduced for redundancy of signal transmission to ensure the reliability and stability of monitoring and reduce the risk of missed detection due to system failure.

5) According to the present invention, the monitoring screen displays thermal images, CCTV footage, fire detector status, etc., so that the safety status can be comprehensively grasped in real time, and access to past temperature data can assist in trend analysis and preventive fire safety management.

6) According to the present invention, by dividing zones and individually displaying signal occurrence, a fire detection monitoring method can be provided that can quickly identify the exact location of a potential fire accident, shorten the response time, and continuously monitor various parameters in real time to quickly identify and resolve any deviations from the standard.

7) According to the present invention, the voltage status applied to the fire detector can be checked to distinguish between operation/normal/power failure/open circuit, etc., and gas turbine tripping due to malfunction of the fire detector can be prevented.

8) According to the present invention, unlike existing systems that only distinguish between simple operation/normal states, this device can identify various states such as normal operation, low voltage, overvoltage, fire detection, and short circuit, and through such comprehensive monitoring, can accurately detect various types of faults and fire states.

9) According to the present invention, potential defects in a fire detection system can be identified early before they lead to failure or false alarms through the function of detecting undervoltage and overvoltage conditions, and by accurately distinguishing various operating states, false alarms, which are a common problem in high-temperature environments due to equipment sensitivity, can be significantly reduced.

10) According to the present invention, since it can be integrated with various types of sensors such as flame detectors, smoke detectors, and constant temperature detectors, it can be effectively used for various purposes in various fire detection scenarios, and since multiple sensors can be monitored simultaneously through parallel connection, the overall reliability and responsiveness of the fire detection system can be improved.

FIG. 1 is a diagram showing a detailed flow of a fire detection monitoring method of a generator according to an embodiment of the present invention.
FIG. 2 is a drawing showing the block configuration of a monitoring system to which a fire detection monitoring method of a generator according to an embodiment of the present invention is applied.
FIG. 3 is a drawing illustrating a block configuration of a monitoring board applied to a fire detection monitoring method of a generator according to an embodiment of the present invention.
FIG. 4 is a drawing showing the arrangement configuration of a monitoring board applied to a fire detection monitoring method of a generator according to an embodiment of the present invention.
FIG. 5 is a schematic diagram of the overall circuit configuration of a monitoring board applied to a fire detection monitoring method of a generator according to an embodiment of the present invention.
FIG. 6 is a diagram showing the circuit configuration of a detector receiving unit of a monitoring board applied to a fire detection monitoring method of a generator according to an embodiment of the present invention.
Figure 7 is a schematic diagram of the circuit configuration of the operation status judgment unit of the monitoring board applied to the fire detection monitoring method of a generator according to an embodiment of the present invention.
FIG. 8 is a schematic diagram of the circuit configuration of the operation status output section of the monitoring board applied to the fire detection monitoring method of a generator according to an embodiment of the present invention.
FIG. 9 is a drawing showing a detailed circuit configuration of an operation status output section of a monitoring board applied to a fire detection monitoring method of a generator according to an embodiment of the present invention.
FIG. 10 is a drawing exemplifying a screen output from a central control unit applied to a fire detection monitoring method of a generator according to an embodiment of the present invention.
Figure 11 is a schematic diagram showing the detector status confirmation and DCS linkage through a fire detection monitoring method of a generator according to an embodiment of the present invention.

Before describing the present invention in detail, it should be understood that the terms or words used in this specification should not be interpreted as being unconditionally limited to their usual or dictionary meanings, and that the inventor of the present invention may appropriately define and use the concepts of various terms in order to describe his or her invention in the best possible manner, and further that these terms or words should be interpreted as meanings and concepts that are consistent with the technical idea of the present invention.

That is, the terms used in this specification are only used to describe preferred embodiments of the present invention, and are not intended to specifically limit the contents of the present invention. It should be understood that these terms are terms defined in consideration of various possibilities of the present invention.

It should also be noted that in this specification, singular expressions may include plural expressions unless the context clearly indicates otherwise, and similarly, even if expressed in plural, may include singular meaning.

Throughout this specification, whenever a component is described as "including" another component, this may mean that the component may further include any other component, rather than excluding any other component, unless otherwise specifically stated.

Furthermore, when a component is described as being “existing within, or installed in connection with” another component, it should be noted that the component may be installed in direct connection with or in contact with the other component, may be installed spaced apart from the other component by a certain distance, and if it is installed spaced apart from the other component by a certain distance, there may be a third component or means for fixing or connecting the component to the other component, and the description of this third component or means may be omitted.

On the other hand, when a component is described as being "directly connected" or "directly connected" to another component, it should be understood that no third component or means is present.

Likewise, other expressions that describe the relationship between each component, such as "between" and "directly between", or "adjacent to" and "directly adjacent to", should be interpreted as having the same meaning.

In addition, it should be noted that the terms “one side,” “the other side,” “one side,” “the other side,” “first,” “second,” etc., when used in this specification, are used to clearly distinguish one component from other components, and that the meaning of the component is not limited by such terms.

In addition, terms related to position, such as “upper,” “lower,” “left,” and “right,” if used in this specification, should be understood to indicate relative positions of corresponding components in the corresponding drawings, and unless absolute positions are specified for these positions, these position-related terms should not be understood to refer to absolute positions.

In addition, in this specification, when specifying the drawing symbols for each component in each drawing, the same component is given the same drawing symbol even if the component is shown in a different drawing, that is, the same reference symbol indicates the same component throughout the specification.

In the drawings attached to this specification, the size, position, connection relationship, etc. of each component constituting the present invention may be described in an exaggerated, reduced, or omitted manner in order to sufficiently and clearly convey the idea of the present invention or for convenience of explanation, and therefore the proportions or scales may not be strict.

In addition, in the following description of the present invention, a detailed description of a configuration that is judged to unnecessarily obscure the gist of the present invention, for example, a known technology including a prior art, may be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a drawing showing a detailed flow of a fire detection monitoring method of a generator according to an embodiment of the present invention, and FIG. 2 is a drawing showing a block configuration of a monitoring system (1000) to which a fire detection monitoring method of a generator according to an embodiment of the present invention is applied.

First, looking at the configuration of a monitoring system (1000) applied to a fire detection monitoring method of a generator according to an embodiment of the present invention, as shown in FIG. 2, it can be configured to include a plurality of fire detectors (210), a first receiver (231), a second receiver (232), a plurality of monitoring boards (100), and a central control device (300).

The multiple fire detectors (210) may be multiple fire detectors (210) or fire detection sensors installed in multiple zones (ZONE1, ZONE2, ZONE3, ZONE4) in the power plant generator.

Here, the fire monitoring system (200) may be configured to include a fire detector (210) or a fire detection sensor installed in the generator area of the power plant and connected in parallel to each fire detector (210) to receive a detection signal.

Additionally, the control panel may be a control panel (Control PNL) or control box including the first receiver (231) and the second receiver (232) and the monitoring board (100) described above.

And, as shown in FIG. 2, the central control device (300) may be a computing device that controls, monitors, and manages the system based on the operation status information of the fire detector (210) received by a plurality of monitoring boards (100).

The central control unit (300) may be configured to include a fire detector status unit, an event recording unit, a thermal imaging unit, a CCTV image unit, and a distributed control unit (350) (DCS).

Hereinafter, a fire detection monitoring method of a generator according to an embodiment of the present invention using such a monitoring system (1000)(1000) will be described in detail with reference to the drawings.

As shown in FIG. 1, a fire detection monitoring method of a generator according to an embodiment of the present invention may be configured to include (a) a step (S100) in which a monitoring board (100) receives a voltage signal, (b) a step (S200) in which the monitoring board (100) generates operation status information of a fire detector (210), and (c) a step (S300) in which a central control device (300) controls, monitors, and comprehensively manages the system.

(a) Step (S100) may be a step in which a monitoring board (100) installed on a control panel of a fire monitoring system (200) receives detection signals from multiple fire detectors (210) installed in multiple zones in a power plant generator and a voltage signal applied to the fire detectors (210) for each zone.

In addition, step (a) (S100) may include a step of receiving a voltage signal applied to each zone fire detector (210) from a receiver connected in parallel with a plurality of fire detectors (210) installed in each zone of a power plant generator, the monitoring board (100).

In addition, step (a) (S100) may include a step of receiving a voltage signal applied to each fire detector (210) of each zone by duplication from a first receiver and a second receiver connected in parallel with a plurality of fire detectors (210) installed in each zone of a power plant generator, by the monitoring board (100).

And, step (b) (S200) may be a step in which the monitoring board (100) determines the operating status of the fire detector (210) for each zone according to the voltage signal range classified by presetting the received voltage signal and generates information on the operating status of the determined fire detector (210).

In addition, step (b) may be configured to include a step in which the internal alarm unit (S200) displays the operating status of the fire detector (210) through a plurality of LEDs installed on the monitoring board (100) according to the operating status information, and a step in which the external output unit transmits the operating status information to the central control device (300).

More specifically, step (b) may include (S200), (b1) a step in which the operation status determination unit (120) of the monitoring board (100) determines the operation status of the fire detector (210) according to a voltage signal range that is preset and classified based on the received voltage signal, and (b2) a step in which the operation status output unit (130) displays the operation status information of the fire detector (210) determined by the operation status determination unit (120).

Here, the operating state is the operating state of the fire detector (210), and may include at least one of normal, low voltage, overvoltage, fire detection, and short-circuit states. In addition, by receiving a voltage signal applied to the detection sensor of the fire detector (210), the judgment range of the received signal may be set in advance so that various operating states of the fire detector (210) can be judged in advance.

And, step (b1) (S210) may include a step in which the operation state analysis unit analyzes which range of the voltage signal range the received voltage signal corresponds to among the preset and classified voltage signal ranges, determines the operation state of the fire detector according to the classified voltage signal range, and generates operation state information, and a step in which the signal processing unit converts a digital signal for the operation state information into an analog signal.

In addition, the method may include a step of determining the fire detector as being in a normal state when the received voltage signal falls within a voltage range of 15 V to 23.5 V, a step of determining the fire detector as being in a fault state when the received voltage signal falls within a voltage range of 7 V to 14.9 V and 23.6 V to 25.5 V, and a step of determining the fire detector as being in an open state when the received voltage signal falls within a voltage range of 25.6 V or higher.

And, as shown in Fig. 1, step (c) (S300) may be a step in which the central control device (300) controls, monitors, and integrates management of the fire monitoring system (200) based on the received fire detection signal and the operation status information.

More specifically, step (c) may include: (c1) a step of receiving an image of a thermal imaging camera installed in the installation area of the fire detector and outputting thermal imaging monitoring information; (c2) a step of receiving an image of a CCTV camera installed in the installation area of the fire detector and outputting CCTV monitoring information; (c3) a step of outputting fire detector monitoring information for the operation status information received by the fire detector status unit; and (c3) a step of recording and storing real-time log information on event information when an event of the fire detector occurs. (S320)

And, below, the detailed configuration of a monitoring system (1000) to which a fire detection monitoring method of a generator according to an embodiment of the present invention is applied will be described in detail with reference to the drawings.

FIG. 3 is a drawing showing the block configuration of a monitoring board (100) applied to a fire detection monitoring method of a generator according to an embodiment of the present invention.

As shown in FIG. 3, a plurality of monitoring boards (100) are boards or kits installed on a control panel of a fire detection system, and may be a device for monitoring the fire detectors (210) for each zone, including a detector receiving unit (110) that receives a voltage signal applied to a fire detector (210) for each zone, an operation status determining unit (120) that determines the operation status of the fire detector (210) according to a voltage signal range that is preset and classified based on the received voltage signal, and an operation status output unit (130) that displays operation status information of the fire detector (210) determined by the operation status determining unit (120).

And, as shown in FIGS. 2 and 3, the detector receiving unit (110) is configured to receive a detection signal applied to a fire detector (210) installed in a generator, and may be configured to receive an applied voltage signal for each sensor from a first receiver (231) connected in parallel with each of a plurality of fire detectors (210) provided in the fire detector (210) or connected in parallel with the fire detectors (210) for each zone.

In addition, as shown in Fig. 2, an additional new receiver is provided to receive an applied voltage signal for each sensor through a second receiver (232) connected 1:1 in parallel with the fire detector (210) for each zone, thereby increasing the reliability of the signal through redundancy of the detection signal of the receiver, and providing a system that can stably receive and monitor signals even in the event of a failure or malfunction of the first receiver (231).

Here, the fire detector (210) or fire detection sensor may be at least one of a flame detector, a smoke detector, and a constant temperature detector.

In addition, the detector receiving unit (110) may be configured to include, more specifically, a signal receiving unit (111) in which a plurality of detector sensors are connected in parallel with the receiver and which receives a voltage signal applied to each sensor from the receiver, and an ADC signal processing unit (113) that converts the received signal into a digital signal.

And, as shown in Fig. 3, the operation status judgment unit (120) may be configured to judge the operation status of the fire detector (210) according to a voltage signal range that is preset and classified based on the received voltage signal.

More specifically, the operating state determination unit (120) may be configured to include an operating state analysis unit (121) that analyzes which range of a voltage signal range that a received voltage signal corresponds to and determines the operating state of the fire detector (210) based on the analyzed voltage signal range, and a DAC signal processing unit (123) that converts a digital signal determined by the operating state analysis unit (121) into an analog signal.

In addition, the operation state analysis unit (121) may be characterized by determining, more specifically, that the fire detector (210) is in a normal state when the received voltage signal falls within a voltage range of 15 V to 23.5 V, determining the fire detector (210) in a fault state when the received voltage signal falls within a voltage range of 7 V to 14.9 V and 23.6 V to 25.5 V, and determining the fire detector (210) in an open state when the received voltage signal falls within a voltage range of 25.6 V or higher.

The judgment criteria range of the applied voltage signal of the detection sensor according to the operating status of the fire detector (210) is as shown in the following [Table 1].

movement Voltage operating range margin of error normal 15.0 ~ 23.5V ±0.2V Voltage Fault low voltage 7.0 ~ 14.9V Overvoltage 23.6 ~ 25.5V Fire 6.9V or less Open 25.6V or higher

As shown in [Table 1], as a result of measuring the voltage signal applied by being connected in parallel with the fire detection sensor (DC 24V standard) installed in the generator, the voltage signal range for normal operation is 15.0 to 23.5 V, the range of undervoltage in the voltage abnormality state is 7.0 to 14.9 V, the range of overvoltage is 23.6 to 25.6 V, and the voltage range of the detection sensor when the fire detector (210) determines a fire is 6.9 V or less, and the voltage range of the open state is 25.6 V or more. Here, the error range is ±0.2 V.

The voltage range criteria for judging the operating status of a fire detector (210) can be updated in advance through various data, and can vary depending on the type of detection sensor or the installation environment, but can be classified by the specifications of the applied voltage.

And, as illustrated in FIG. 3, the operation status output unit (130) is configured to display the operation status of the fire detector (210) determined by the operation status determination unit (120), and includes a fire detector (210) output unit and a constant temperature detector output unit. However, the digital signal received from the operation status analysis unit (121) may be converted into an analog signal and transmitted to each fire detector (210) output port and constant temperature detector output port.

In addition, the operation status output unit (130) may be configured to include an internal alarm unit (131) that displays the operation status of the fire detector (210) with a plurality of LEDs through a signal received from the operation status judgment unit (120), and an external output unit (133) that outputs a signal indicating the operation status of the fire detector (210) received from the operation status judgment unit (120) by being connected to a central control unit (300) equipped with a distributed control unit (350) (DCS).

Here, the internal alarm unit (131) is configured to immediately display the operating status signal of the fire detector (210) determined and transmitted by the operating status determination unit (120), and can display the operating status information of the fire detector (210), such as normal operation/low voltage/overvoltage/fire detection/open, by turning the LED on/off using a combination of multiple LED configurations.

In addition, the external output unit (133) may be configured as an output port that receives a signal judged by the operation status judgement unit (120) and can be connected to a computing device such as a central control unit (300) equipped with a DCS to output the signal through a monitoring program.

In this way, the monitoring board (100) applied to the fire detection monitoring method of the generator according to the present invention as shown in FIG. 2 can be implemented as an electronic board or kit and installed in a control panel (PNL) connected in parallel with a plurality of fire detectors (210) or fire detection sensors.

That is, looking at the detailed flow of the fire detection monitoring method of a generator according to an embodiment of the present invention, as shown in FIGS. 1 and 2, first, a detection signal is transmitted to a fire detector (210) installed in each zone in an enclosure room in a high-temperature environment of a generator, particularly a turbine, and a first receiver (231) connected in parallel 1:1.

From the first receiver (231) installed on the control panel, a voltage signal is applied to the fire detector (210) for each zone, and is transmitted to the monitoring board (100) for each zone (ZONE1, ZONE2, ZONE3, ZONE4) ((a) step (S100)), and the monitoring board (100) for each zone analyzes the received voltage signal by comparing and analyzing it with a voltage range according to the operating state set in advance, and determines which range among the pre-classified voltage signal ranges it corresponds to, thereby determining the operating state of the fire detector (210), generating operating state information (S210), and transmitting the signal to the fire detector status unit (310) of the central control unit (300) (S220).

And, as shown in FIG. 1 and FIG. 2, the fire detector status unit (310) of the central control unit (300) receives the operation status information of the fire detector (210) transmitted from the monitoring board (100) of each zone and outputs the fire detector (210) status information, the thermal imaging unit (330) outputs the thermal imaging image collected from the thermal imaging camera, and the CCTV image unit (340) collects the CCTV image collected from the CCTV camera and outputs the image of the zone where the fire detector (210) is installed. (S320)

In addition, as shown in FIGS. 1 and 2, the event recording unit (320) performs a function of recording and storing event information in real time when an event occurs based on the operation status information received from the monitoring board (100) for each zone.

The distributed control device (350)(350)(DCS) is connected to the above-described control panel and receives a fire detection signal and a signal from the monitoring board (100) to generate a control signal, and can transmit alarm and warning signals and information to the server of an external fire response agency, as well as perform functions of monitoring, integrated control, and management of the system. (S330)

FIG. 4 is a diagram showing the arrangement configuration of a monitoring board (100) applied to a fire detection monitoring method for a generator according to an embodiment of the present invention, FIG. 5 is a schematic diagram of the entire circuit configuration of a monitoring board (100) applied to a fire detection monitoring method for a generator according to an embodiment of the present invention, FIG. 6 is a diagram showing the circuit configuration of a detector receiving unit (110) of a monitoring board (100) applied to a fire detection monitoring method for a generator according to an embodiment of the present invention, FIG. 7 is a schematic diagram of the circuit configuration of an operation status determination unit (120) of a monitoring board (100) applied to a fire detection monitoring method for a generator according to an embodiment of the present invention, FIG. 8 is a schematic diagram of the circuit configuration of an operation status output unit (130) of a monitoring board (100) applied to a fire detection monitoring method for a generator according to an embodiment of the present invention, and FIG. 9 is a diagram showing the detailed circuit configuration of an operation status output unit (130) of a monitoring board (100) applied to a fire detection monitoring method for a generator according to an embodiment of the present invention.

As shown in FIG. 4, looking into the configuration of the substrate of the monitoring substrate (100) applied to the fire detection monitoring method of the generator according to the embodiment of the present invention, a detector receiving unit (110) for receiving a voltage signal applied to a fire detector (210) installed on the upper part of the generator, particularly a high-temperature gas turbine, an operation status determining unit (120) for determining the operation status of the fire detector (210) by determining which range the received voltage signal falls within based on the classification of the voltage signal according to the operation status of the fire detector (210) by presetting the received voltage signal, and an operation status output unit (130) for displaying and outputting the determined operation status of the fire detector (210) can be formed by being arranged on the substrate.

More specifically, as shown in FIG. 5, looking at the overall circuit configuration of the monitoring board (100) applied to the fire detection monitoring method of the generator according to the embodiment of the present invention, the fire detector (210) signal and the constant temperature detector signal input through the detector receiving unit (110) are converted into an analog signal, which is a voltage signal applied to the detection sensor, through the ADC signal processing unit (113) into a digital signal.

And, the operation status judgment unit (120) equipped with a microcontroller unit (MCU) analyzes the signal received from the ADC signal processing unit (113) through an operation status judgment algorithm or program, and analyzes and judges the operation status of the fire detector (210) according to a preset operation status judgment reference voltage range.

The signal determined by the operation status determination unit (120) is converted into an analog signal and transmitted to the operation status output unit (130) that outputs the operation status. The operation status output unit (130) can output the fire detector (210) output and the constant temperature detector output as the ON/OFF status of the LED through a switch composed of a FET element and a relay circuit, respectively, and can transmit the output signal by connecting to an external central control device (300).

More specifically, the operation of each component is as follows.

As shown in Fig. 6, the detector signal is input by receiving a detector signal or voltage signal transmitted by connecting a plurality of fire detectors (210) or detection sensors installed in each zone, such as a turbine of a generator, in parallel, and the fire detector (210) signal and the constant temperature detector signal can be input through an input port that is distinguished.

And, the detector receiving unit (110) converts the analog signal received from the external fire detector (210) into a digital signal, and converts the analog signal received from the constant temperature detector into a digital signal. Then, the detector receiving unit (110) transmits the converted digital signal to the operating status determination unit (120).

In addition, as shown in FIG. 7, the operation status judgment unit (120) is composed of a micro controller unit (MCU), and as shown in FIG. 8, the fire detector (210) signal and the temperature detector signal are analyzed by the ADC signal processing unit (113) and transmitted to the DAC signal processing unit (123).

Here, signal analysis analyzes and classifies signals using pre-installed and input signal processing algorithms and firmware. This compares the input signal with the voltage range classified according to the operating state of the fire detector (210) set in advance, analyzes which range it corresponds to, and classifies the signal in the analyzed and determined range according to the operating state of the fire detector (210).

And, as illustrated in FIG. 9, the operation status output unit (130) of the monitoring board (100) applied to the fire detection monitoring method of the fire generator according to the embodiment of the present invention comprises an FET (field effect transistor) element and a relay circuit, and outputs a status display and an alarm contact signal (+24 V) when an alarm occurs through the FET (field effect transistor) element, and if the signal received from the operation status judgment unit (120) is a normal signal based on the signal output from the DAC signal processing unit (123), the alarm LED signal is turned off, and the switch operation signal is turned OFF.

And, based on the signal received from the FET (field effect transistor) unit, the ON/OFF function of the external monitoring device (100) or alarm contact signal is handled by a switch equipped with a relay circuit.

In this way, the monitoring board (100) applied to the fire detection monitoring method of the generator according to the embodiment of the present invention provides monitoring information that can monitor various operating states of the fire detector (210) by comparing the real-time fire detector (210) signal measured by determining in advance a voltage range that determines the operating state of the fire detector (210).

More specifically, the principle of the monitoring board (100) (or detection kit) applied to the fire detection monitoring method of a generator according to an embodiment of the present invention is as follows.

1) Voltage measurement: The fire detector (210) is equipped with a sensor (such as a smoke, heat or flame sensor) that reacts to specific conditions. When each of these sensors detects a condition, the electrical characteristics of the detector circuit change, causing a change in the voltage level. Therefore, this voltage signal can be measured and used as a basis signal for determining the status of the fire detector (210).

2) Voltage range specifications: Each type of fire detector (210) is designed with specific voltage thresholds corresponding to different operating states. For example, the normal operating range can be set to 15.0 to 23.5 V, and a voltage below 6.9 V may indicate a fire condition.

3) Judgment of operating status according to voltage: Normal operation may indicate that the detection sensor is operating properly within the specified voltage range and no fire is detected, and a fire state may exist if the voltage range is lower, which may trigger the detection sensor to send an alarm signal.

4) Fault Conditions: Voltages outside the normal operating range (e.g. overvoltage or undervoltage) that do not indicate a fire may indicate a fault condition such as a power problem or a malfunctioning sensor.

5) Feedback to receiver: It is possible to transmit the voltage signal of the detection sensor of a general fire detector (210) to the receiver, analyze the receiver signal, and determine the operating status of the fire detector (210), or connect to a plurality of detection sensors connected in parallel, receive voltage signals, and determine the operating status.

FIG. 10 is a drawing exemplifying a screen output from a central control unit (300) applied to a fire detection monitoring method of a generator according to an embodiment of the present invention.

As shown in Figure 10, ① on the screen, a thermal image collected from a thermal imaging camera is output, so that the user can monitor the internal status of a high-temperature environment, such as a turbine compartment of a generator, in real time from the monitoring output screen.

In addition, ① through the screen, you can manage the igniter temperature trend, check the latent heat temperature inside the insulation material, check for equipment abnormalities through DeltaT temperature measurement, and check past temperature data.

In addition, ② CCTV footage collected from CCTV cameras can be monitored in real time on the screen, and the presence of high temperatures and smoke can be monitored in real time. In addition to visual confirmation by users or administrators, CCTV footage can be collected in real time and flames and smoke can be detected using deep learning technology, and through this, the presence of a fire can be automatically estimated and monitored.

③ Through the screen, the status information of the fire detector (210) installed in each zone can be monitored. In addition, through ③ the screen, the reliability and stability of the monitoring information can be secured through signal duplication by installing a new receiver, and intuitive confirmation can be made possible by dividing the zones and displaying the signal occurrence.

In addition, the operation status information for each fire detector (210) can be recognized or determined as a fire when operated simultaneously (AND) according to preset conditions, and a warning signal can be generated when a single system is operated. In addition, the status of the fire detector (210) can be checked in detail according to the operation status voltage classification for the voltage signal applied to the fire detector (210) by zone.

Additionally, you can check the event log information when an event occurs through the event log UI screen.

Figure 11 is a schematic diagram showing the detector status confirmation and DCS linkage through a fire detection monitoring method of a generator according to an embodiment of the present invention.

As shown in Fig. 11, the fire detection monitoring method of a generator according to an embodiment of the present invention divides the generator into four zones and installs a fire detector (210) in each zone to monitor fire.

In addition, a method is provided in which a fire detector (210) and a receiver are connected in parallel to ensure reliability through a 1:1 correspondence, a voltage classification according to the operating status of the voltage signal applied to the fire detector (210) in each zone is used to distinguish between alarm and trip occurrence, and a new receiver is provided to prevent malfunction through signal duplication.

The fire detection monitoring method of a generator according to the present invention has the following advantages.

1. Enhanced detection and monitoring capabilities

- Multiple operating states: Unlike conventional systems that only distinguish between simple operation/normal states, this device can identify various states such as normal operation, low voltage, overvoltage, fire detection, and open circuit. This comprehensive monitoring enables accurate detection of various types of faults and fire conditions.

- Specific voltage ranges by status: By defining specific voltage ranges for different operating statuses, the device can more accurately identify the exact status of the fire detector (210), leading to more accurate and reliable monitoring.

2. Improved fault detection and prevention

- Early identification of faults: The ability to detect undervoltage and overvoltage conditions allows for early identification of potential faults in the fire detection system before they lead to failures or false alarms.

- Reduced false alarms: By accurately distinguishing between different operating states, false alarms, a common problem in high-temperature environments due to equipment sensitivity, can be significantly reduced.

3. Diversity of sensor integration

- Compatibility with various sensor types: Such devices can be integrated with various types of sensors such as flame detectors, smoke detectors, temperature detectors, etc., making them versatile and effective in various fire detection scenarios.

- Sensor Parallel Connection: Parallel connection allows for simultaneous monitoring of multiple sensors, improving the overall reliability and responsiveness of the fire detection system.

4. Advanced signal processing

- Analog-to-digital conversion (ADC): The ADC signal processing device can convert the analog signal of the fire detector (210) into a digital signal to facilitate more precise analysis and processing.

- Digital-to-Analog Conversion (DAC): The DAC signal processing device converts the digital signal back into an analog signal after analysis and outputs it, thereby ensuring compatibility with various output systems and devices.

5. Comprehensive Output and Communication

- Internal and External Communication: The device includes both an internal alarm for immediate notification within the facility and an external output for communication with external systems, allowing a quick response to any detected issues.

- Clear operating status display: The operating status output section provides clear and immediate feedback on the status of the fire detector (210), enabling quick decision-making and response.

6. Products specialized for high temperature environments

- Suitability for turbine areas: These devices can be specifically designed to operate reliably under high temperature conditions in generator turbine areas where conventional systems may struggle.

And, the program applied to the fire detection monitoring method of a generator according to one embodiment of the present invention described above can be implemented as a computer-readable code on a computer-readable recording medium. The codes and code segments implementing the above program can be easily inferred by a computer programmer in the relevant field.

A computer-readable recording medium may include any type of recording device that stores data that can be read by a computer system. Examples of computer-readable recording media may include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical disk, etc. In addition, the computer-readable recording medium may be distributed over network-connected computer systems, and may be written and executed as computer-readable code in a distributed manner.

Above, although some examples have been given and various preferred embodiments of the present invention have been described, the description of various embodiments described in the “Specific Details for Carrying Out the Invention” section is merely exemplary, and those skilled in the art to which the present invention pertains will readily understand that various modifications of the present invention can be implemented or equivalent implementations of the present invention can be implemented based on the above description.

In addition, since the present invention can be implemented in various other forms, the present invention is not limited by the above description, and the above description is provided only to make the disclosure of the present invention complete and to fully inform a person having ordinary skill in the art to which the present invention belongs of the scope of the present invention, and it should be understood that the present invention is defined only by each claim of the claims.

100 : Monitoring board
110 : Detector Receiver
111 : Signal receiving unit
113: ADC signal processing unit
120: Motion status judgment unit
121: Motion status analysis department
123: DAC signal processing unit
130: Operation status output section
131: Internal alarm unit
133 : External output section
200 : Fire monitoring system
210 : Fire detector
231: Receiver 1
232: 2nd receiver
300 : Central control unit
310: Fire detector status
320 : Event Log
330 : Thermal imaging section
340: CCTV video section
350: Distributed Control System (DCS)
1000 : Monitoring System

Claims (10)

(a) a step in which a monitoring board installed on a control panel of a fire monitoring system receives detection signals from multiple fire detectors installed in multiple zones in a power plant generator and voltage signals applied to the fire detectors in each zone;
(b) a step in which the monitoring board determines the operating status of the fire detector for each zone according to the voltage signal range classified by presetting the received voltage signal and generates information on the operating status of the determined fire detector; and
(c) a step for controlling, monitoring and integrated management of the fire monitoring system based on the received fire detection signal and the operation status information by the central control device;
Step (a) above,
The above monitoring board is characterized in that it includes a step of doubly receiving the voltage signal applied to the fire detector through a first receiver connected in parallel with the fire detector and a second receiver additionally provided, thereby increasing the reliability of the received voltage signal.
Method for monitoring fire detection in a generator.
delete delete In the first paragraph,
The above operating status is,
The operating state of the fire detector is characterized by including at least one of normal, low voltage, overvoltage, fire detection and short circuit states.
Method for monitoring fire detection in a generator.
In the first paragraph,
Step (b) above,
(b1) a step in which the operation status judgment unit of the monitoring board judges the operation status of the fire detector according to the voltage signal range classified by presetting the received voltage signal; and
(b2) characterized in that the operation status output unit includes a step of displaying the operation status information of the fire detector determined by the operation status determination unit.
Method for monitoring fire detection in a generator.
In paragraph 5,
The above step (b1) is:
A step in which the operation status analysis unit analyzes which range of the voltage signal range the received voltage signal falls within in advance and determines the operation status of the fire detector according to the classified voltage signal range and generates operation status information; and
characterized in that the signal processing unit includes a step of converting a digital signal for the above operation status information into an analog signal.
Method for monitoring fire detection in a generator.
In Article 6,
The above step (b1) is:
A step of determining that the fire detector is in a normal state when the received voltage signal falls within a voltage range of 15 V to 23.5 V;
A step of determining that the fire detector is in a voltage abnormality (fault) state when the received voltage signal falls within a voltage range of 7 V to 14.9 V and 23.6 V to 25.5 V;
A method characterized by comprising a step of determining that the fire detector is in an open state when the received voltage signal corresponds to a voltage range of 25.6 V or higher.
Method for monitoring fire detection in a generator.
In the first paragraph,
Step (b) above,
A step in which the internal alarm unit displays the operating status of the fire detector through a plurality of LEDs installed on the monitoring board according to the operating status information,
characterized in that the external output unit includes a step of transmitting the operation status information to the central control device.
Method for monitoring fire detection in a generator.
In the first paragraph,
Step (c) above,
(c1) A step of receiving an image from a thermal imaging camera installed in the installation area of the above fire detector and outputting thermal imaging monitoring information;
(c2) A step of receiving images from a CCTV camera installed in the installation area of the above fire detector and outputting CCTV monitoring information;
(c3) a step for outputting fire detector monitoring information for the received operation status information from the fire detector status unit; and
(c3) characterized by including a step of recording and storing real-time log information on event information when an event of the fire detector occurs.
Method for monitoring fire detection in a generator.
A computer program stored on a medium for executing a fire detection monitoring method of a generator according to any one of claims 1, 4 to 9 on a computer.