KR20200080579A - Fire detection control system and the method using skada program - Google Patents

Abstract

The present invention relates to a fire detection control system using a SKADA program and to a method thereof. The fire detection control system of the present invention comprises: a detection sensor unit outputting a detection signal by detecting an electric device and the temperature; a converter converting a current value of the electric device and a signal of the detection sensor unit into an analog signal; a plc receiving the converted analog signal through an input terminal and generating an output voltage into the analog signal through the SKADA program; an amplifier amplifying the output voltage and transmitting the output voltage to a control device; a control device displaying and outputting a warning sound to an administrator to take appropriate actions when conditions corresponding to each item such as a difference between an overcurrent, a leakage current, and contact temperature from the ambient temperature satisfy each preset condition; and a circuit breaker opening and closing the current and voltage when notified of the abnormal change through the control device.

Description

Fire detection control system and the method using skada program

The present invention relates to a fire detection control system and method using power line communication, and more specifically, to automatically determine an abnormal state of an electric device using a PC or mobile using a SCADA program to determine the situation, and in the case of an abnormal load, etc. It is related to a fire detection control system and method using a SCADA program to notify managers, etc., so that necessary measures can be taken.

In complex buildings, such as apartments or high-rise buildings, fire detectors are deployed with minimum units of each household, office, or floor. Each fire detector is connected to an integrated receiver, and when a fire occurs, it generates its own alarm and applies a fire signal to the integrated receiver. Personnel, such as the guard room and the central control room, where the integrated receiver is installed, recognize the occurrence of a fire at a specific place in the building due to the above signal and take follow-up measures accordingly.

In a conventional fire detection system, when a fire occurs in a specific place of a building, a fire alarm sound is activated throughout the building. On the other hand, in response to such a beep, an agent, such as a security guard, stops the operation of the entire system and enters measures to extinguish the fire.

In addition, even though it is not a fire situation, a false alarm, that is, a non-fire alarm, frequently occurs due to a malfunction of a fire detector or a part of the system. To prevent confusion among residents, the entire fire system may be shut down in some buildings.

In addition, if the fire detector of a specific floor is defective and the alarm system malfunctions, the system may be reset to turn off the alarm system or to stop the entire fire system in order to repair only the malfunction of the system. The fire detection lamp (which is installed in the fire detector and blinks when the fire is detected) returns to normal (the indicator lamp is turned off again), making it impossible to visually check the defective fire detector, and the time for repair and repair of the fire detector. In the event of a delay, fire detection systems on other floors may become useless for that amount of time. If a fire occurs on the other floor under these circumstances, there is a risk of delay and serious damage.

The reason is that a plurality of fire detectors located on the same floor or the same space are generally connected to the receiver through one channel. When the fire detector detects the fire, the location of the fire can be accurately identified as the fire detection lamp blinks. When the alarm is turned off, all fire detectors return to normal, and the fire detector cannot be accurately identified, causing repeated alarms due to malfunction. Again, it causes inconvenience. Another solution is to replace all fire detectors connected to the channel, which can lead to a lot of time and cost loss for management.

Accordingly, there have been many studies on the development of a fire detection system using a software or program equipped with a constant monitoring system in order to prepare and prevent a fire that does not know when and how.

Republic of Korea Patent Publication No. 2005-0061938 Republic of Korea Patent Publication No. 2016-0085145

Therefore, the present invention was devised to solve this problem, and to provide a fire detection control system and method using a SCADA program that can build an optimal fire detection system through early detection of fire and wide area detection. It is there.

In addition, it is intended to provide a fire detection control system and method using a SCADA program that can quickly and accurately respond to incidents through quick, accurate incident handling through mobile, etc., and reduce unnecessary costs due to false detection. It is there.

In order to achieve this object, the present invention relates to a fire detection control system and method using a SCADA program, which detects an electric device and a temperature and outputs a detection signal, a current sensor of the electric device, and the detection sensor A converter that converts a negative signal into an analog signal and a plc that receives the converted analog signal through an input terminal and generates an output voltage from the analog signal through a SCADA program, and amplifies the output voltage and transmits it to a control device When the amplifier and the data output from the plc are diagnosed and the diagnosis results indicate that the conditions corresponding to each item such as overcurrent, leakage current, and contact temperature are different from the ambient temperature, satisfy each preset condition. It characterized in that it comprises a control device for outputting a warning and a warning sound to the administrator to take the appropriate action and a circuit breaker that opens and closes the current and voltage when notified of the abnormal change through the plc.

In addition, by comparing the current load value with the previous load value of the electric device through the Scada program, if there is more than 30% variation within 1 second, it is characterized by operating as the breaker by determining the abnormal load.

In addition, the sensing sensor unit is characterized in that it is input by sensing the temperature or current value of the load of the electrical device to transmit to the plc.

In addition, the plc is characterized in that it consists of a central control unit in charge of control processing, an input unit that receives an input signal and passes it to the central control unit, and an output unit that delivers the result of the processed signal.

In addition, the amplifier is characterized in that amplifying the output voltage by a preset gain and outputting it as a reference voltage.

Therefore, the present invention has a great effect in preventing accidents, such as fire, because it has a function of monitoring the occurrence of overcurrent, high pressure, and excessive high temperature phenomena at all times and pre-accident measures.

In addition, it is possible to remotely detect a fault condition by using a mobile device, and an accident can be taken, and it is possible to secure product reliability through reduction of labor costs and rapid processing by real-time accident processing.

1 is a block diagram of a fire detection control system using a SCADA program according to a first embodiment of the present invention.
Figure 2 is a program control flow chart for determining whether an abnormal load.
3 is a photo of a sensor control plc program of a digital panel meter
4 is a diagram for performing actual control through a sensor.
Figure 5 is a flow diagram of a fire detection control system using a scan program according to the first embodiment of the present invention.
Figure 6 is a block diagram of a fire detection control system using a scan program according to a second embodiment of the present invention.
7 is a flow chart of a fire detection control system using a scan program according to a second embodiment of the present invention.
Figure 8 is a photograph showing the operating state of the breaker when the abnormality is detected.
Figure 9 is a photograph showing that the operation status on the mobile can be checked on a PC.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible, even if they are displayed on different drawings.

In addition, in the following description of the present invention, when it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

1 is a block diagram of a fire detection control system using a SCADA program according to a first embodiment of the present invention, FIG. 2 is a program control flow chart for determining whether an abnormal load is present, and FIG. 3 is a sensor of a digital panel meter A picture of the control plc program, FIG. 4 is a diagram for performing actual control through a sensor, FIG. 5 is a flowchart of a fire detection control system using a SCADA program according to a first embodiment of the present invention, and FIG. 6 is a view FIG. 7 is a block diagram of a fire detection control system using a SCADA program according to a second embodiment of the present invention, and FIG. 7 is a flowchart of a fire detection control system using a SCADA program according to a second embodiment of the present invention. It is a picture showing the operating status of the breaker when detecting an abnormality, and FIG. 9 is a picture showing that the operating state on the mobile can be checked on a PC.

Prior to describing the present invention, a description will be given of skaka programs and plc, terms that frequently appear in this specification.

SCADA (Supervisory Control and Data Acquisition) refers to the monitoring control function of the SCADA system, also called the centralized remote monitoring control system or the monitoring control data collection system. The SCADA system collects, receives, records, and displays status information data of a remote device using an analog or digital signal on a communication path to a remote terminal unit, so that the central control system monitors and controls the remote device. This refers to a system that centrally monitors and controls various types of remote facilities such as power generation and transmission and distribution facilities, petrochemical plants, steel processing facilities, and factory automation facilities. The skada program means displaying the values measured by various sensors and measuring equipment placed in a building or factory on a monitor. HMI (Human Machine Interface) means a device that connects people and machines, and it means a computer program that becomes such a link.

In addition, a programmable logic controller (PLC) uses programmable memory to perform special functions such as logic, sequencing, timing, counting, and calculation through digital or analog input/output modules, and digital to control various types of machines or processors. Means an electronic device.

Hereinafter, a first embodiment of the present invention will be described with reference to FIG. 1.

The overall configuration of the fire detection control system 100 using the Scada program, which is the first embodiment of the present invention, will be described.

First, the electric device 10 comes out. In general, the electric device is an electric-related machine such as a generator, a transformer, a direct current machine, and the general electric device is classified into household, factory, and industrial. ) Is an industrial electrical equipment, and it is intended to be revealed in advance that it includes equipment devices that incorporate electrical equipment inside, such as substations.

The sensing sensor unit 20 detects current, pressure, and temperature generated by the electrical device 10 and outputs a sensing signal. The sensing sensor unit 20 senses the temperature, pressure, or current value of the load of the electrical device 10 and transmits it to the PLC 40 for input.

In addition, a transducer 30 is formed that converts the current value of the electrical device 10 and the signal of the sensing sensor unit 20 into an analog signal. The signal converted to analog through the converter is connected to an input terminal (not shown) of plc 40 to be described below.

The plc 40 receives the converted analog signal through an input terminal (not shown) and generates an output voltage as the analog signal through a scada program. For reference, the configuration of the plc 40 includes a central control unit (not shown) in charge of control processing, an input unit (not shown) that receives an input signal and passes the input signal to the central control unit, and an output unit that delivers the result of the processed signal ( (Not shown).

When the function of the SCADA program in the plc 40 is explained, it compares the previous load value and the current load value of the electric device 10, and if there is more than 30% variation within 1 second, it is determined as an abnormal load. It is to operate the circuit breaker (70). To describe this in more detail, it will be described with reference to FIG. 2.

First, the load value d of the current electric device 10 is input, and after 1 second, the d1 value is read again, and the difference from the load value before and after 1 second is obtained. The decision is made to operate the circuit breaker 70.

In addition, an amplifier 50 that amplifies the output voltage generated by the analog signal through the SCADA program and transfers it to the control device 60 is formed. That is, the amplifier 50 is to output the analog signal converted through the plc (40) as a control signal of the circuit breaker (70).

The amplifier 50 amplifies the output voltage by a preset gain and outputs it as a reference voltage V _REF . As the type of the amplifier 50, an ssr amplifying element is preferable.

Referring to Figure 3, sensing the temperature or current value of the load and input it to the plc program, the signal of the detection sensor unit 20 is connected to the amplifier 50 to output as a control signal of the circuit breaker 70 plc ( 40) is a picture showing the use.

4 is a photograph showing an actual control screen. When the numerical value is 30 or more through the detection sensor unit 20, the circuit breaker 70 is operated by using the amplifier 50 through the plc 40 so as to output a warning value, so as to be blocked. Additionally, the plc 40 sets the blocking mode to the circuit breaker 70 to supply power to the electrical device 10 when detecting an abnormality such as a value of 30 or more, as in the above example. It also serves to block the.

The control device 60 receives the control signal output from the plc 40, and measures when the conditions such as overcurrent, leakage current, or difference between the ambient temperature and the environment satisfy each preset condition. In order to take an action, display the warning and warning sound to the administrator.

To explain this, as an example, read the temperature of the bus bar (not shown), the connection part (not shown), and the terminal block (not shown) of the electric device 10 at intervals of 1 second to display the contact temperature and display the ambient temperature. After calculating the temperature rise limit using the relationship with, it is detected whether or not the allowable temperature rise limit is exceeded to detect the possibility of fire due to overheating. In addition, a term that means a warning, such as a mobile phone carried by an administrator, when a sudden temperature rise is significantly increased than a reference value by calculating the slope of the temperature at a predetermined set period (eg, "device No. ○ may have a fire due to high temperature") Send short message or warning sound with ). (Here, the technology for transmitting the text message or outputting a warning sound is a well-known technology, so a detailed description thereof will be omitted.)

In addition, in the control device 60, the current state value (for example, whether the switch is opened or closed) for the equipment in the electric device 10 or the electricity flowing into the equipment from the outside of the electric device 10 or the electricity discharged to the outside, inside Electrical data (electricity, voltage, active power, reactive power, frequency, power factor, temperature, etc.) of electricity used in facilities are acquired through plc (40) equipped with the SCADA program, and the manager's electrical equipment (10) It facilitates the operation of the equipment (the data value is remotely managed and controlled by a remote management computer (not shown) that accesses the control device 60).

As described above, when a load abnormality such as an overload or temperature overheating, high pressure, etc. is notified through detection and determination of the control device 60, action is taken through a circuit breaker 70 that opens and closes current and voltage. .

Hereinafter, a method for controlling fire detection using the SCADA program of the present invention will be described with reference to FIG. 5.

First, the size of the temperature or pressure or current of the electric device 10 is detected. (Stage 1)

The sensing sensor unit 20 senses the detected temperature or pressure or current of the electrical device 10. (Step 2)

The sensing sensor unit 20 compares the calculation of temperature or pressure or current with whether the temperature or pressure or voltage is acceptable. (Stage 3)

When the temperature or pressure or current calculated in the third step exceeds an allowable value, it is converted into an analog signal through the converter 30. (Step 4)

The analog signal is connected to the input terminal of the plc (40) to determine whether an abnormal load is present through the SCADA program. (Fifth step) In the above step, if there is a change of 30% or more within 1 second by comparing the previous load value and the current load value of the electric device 10 through the SCADA program, the abnormal load of high temperature, high pressure, high current Judging and operating the circuit breaker 70.

If it is determined in the fifth step that the load is abnormal, the control device 60 is notified. (Step 6)

The control device 60 is to notify the administrator to take action, and to block the circuit breaker 70 by activating it. (Step 7)

Hereinafter, a fire detection control system 200 using a mobile having a built-in SCADA program according to a second embodiment of the present invention will be described with reference to FIG. 6 as well. In the first embodiment described above, redundant description will be omitted to some extent.

As shown in Figure 6, the overall configuration of the fire detection system 200 using a mobile according to the present invention is formed with the electric device 110 operating with a constant load as in the first embodiment.

A mobile 120 is formed to receive a change in current through the electrical device 110 and detect whether an abnormal sign such as overvoltage, high temperature, or high pressure occurs. As the type of the mobile 120, it is intended to reveal that anything is possible as long as it is possible to use the Internet as a portable communication means for laying an app, including a smart phone.

The mobile 120 is connected to the communication network 130 by wireless communication and reads a field load value of the electric device 110 measured by using a scada program embedded in the mobile 120. It is possible to continuously monitor through the mobile 120 and automatically determine an abnormal signal.

In addition, a storage unit (not shown in the drawing) capable of storing a SCADA program is formed in the mobile 120. Therefore, it would be desirable for the related app to be laid on the mobile 120 so that the above-mentioned SCADA program can be operated.

The current value, pressure, and temperature sensed through the mobile 120 are converted into an analog signal through Ethernet 140, and the analog signal is connected to the input terminal of plc 150. Here, the Ethernet is a local area network (LAN), which is a form of a network, and serves to assist the detection and control of the mobile 120.

The plc 150 receives the analog signal converted as described above through an input terminal (not shown) and generates an output voltage from the analog signal through a scan program.

The signal input to the SCADA program compares the current load value with the previous load value of the electrical device 110 and if there is a change of 30% or more within 1 second, an abnormal load that may cause overcurrent, high pressure, high temperature, etc. It is determined to operate the circuit breaker 170.

Then, at the same time, the controller 160 receives and diagnoses the data output from the plc 150, and as a result of the diagnosis, conditions corresponding to each item such as overcurrent, high pressure, and temperature difference from the ambient temperature are set in advance. Indication and warning sound are output to the manager to take action when each condition is satisfied.

In addition, the control device 160 receives and diagnoses the voltage output from the plc 150, and when the diagnosis results indicate that overcurrent, high temperature, high pressure, etc. satisfy each preset condition, it is determined as an abnormal load. Outputs a warning and warning sound to the administrator to take action.

Accordingly, when the control device 160 determines that the voltage output through the plc 150 is an abnormal voltage, the control device 160 is notified to cause the circuit breaker 170 to close, such as a current blocking light.

Hereinafter, a fire detection method using a mobile having a built-in SCADA program will be described with reference to FIG. 7.

The temperature, pressure, and current of the electric device 110 are transmitted to the mobile. (First step) In the first step, an app capable of receiving the temperature, pressure, and current of the electric device 110 is spread or a predetermined detection device (not shown) is formed to transmit data such as temperature. You can receive it.

The transmitted sensing temperature is calculated and the allowable temperature is calculated and compared. (Second step) Here, the sensing temperature and the allowable temperature are compared, and the allowable temperature is set in the mobile 120 to compare with a preset temperature to determine whether the allowable value is exceeded. Here, it should be noted that not only the temperature is limited, but also includes current, pressure, and the like.

When the allowable temperature is exceeded, the load value of the electric device 110 is read through the SCADA program embedded in the mobile 120. (Stage 3)

In the next step, the analog signal is converted through Ethernet 140 to connect the analog signal to the input terminal of plc 150. (Step 4) By utilizing the Ethernet 140, it is easy to convert the analog signal of the detected signal (current, pressure, temperature, etc.) of the mobile 120.

The presence or absence of the load fluctuation is grasped in the plc 150 to determine whether the load is abnormal. (Fifth step) In the fifth step, as in the first embodiment, the current load value is input, received again after 1 second, and the difference between the load value before and after 1 second is calculated, and if it is greater than 30% than the current value, the load becomes abnormal. You will judge.

If it is determined in step 5 that the load is abnormal, the control device 160 is notified. (Step 6)

The control device 160 is to inform the administrator to take action and to operate the breaker 170. (Step 7)

Referring to FIG. 8, when it is determined that the load is abnormal as described in step 5 above, the breaker 1 is set because the set temperature of the warning value 1 is 25°C, but the current value 1 is 24.5°C, which has not yet reached the set temperature. It is not working.

In addition, when the set temperature of the warning value 2 is 24°C, the current value 2 is 24.4°C or more, but the breaker 2 is operated and the display lamp is turned on.

And, Figure 9 is to enable the administrator to check the control operation status in the mobile 120 through a general pc.

As described above, the above-described contents are merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may vary within a range not departing from the essential characteristics of the present invention. Modifications, modifications and substitutions are possible.

Therefore, the embodiments and the accompanying drawings disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings. The scope of protection of the present invention should be interpreted by the following claims, and all technical spirits within the equivalent range should be interpreted as being included in the scope of the present invention.

10: electrical equipment 20: detection sensor unit
30: converter 40: plc
50: amplifier 60: control device
70: breaker
100: fire detection control system using the SCADA program
110: electrical equipment
120: mobile 125: storage
130: communication network 140: Ethernet
150: plc 160: control device
170: breaker
200: fire detection control system using mobile

Claims (7)

In the fire detection control system using the SCADA program,
Electrical equipment 10;
A sensing sensor unit 20 sensing a temperature and outputting a sensing signal;
A converter 30 for converting the current value of the electrical device 10 and the signal of the detection sensor unit 20 into an analog signal;
A plc (40) for receiving the converted analog signal through an input terminal and generating an output voltage from the analog signal through a SCADA program;
An amplifier 50 that amplifies the output voltage and delivers it to the control device 60;
A control device 60 that receives a control signal output from the plc 40 and outputs an indication and a warning sound to the manager to take measures corresponding to the conditions corresponding to overcurrent, high temperature, and high pressure;
The fire detection control system 100 using a SCADA program, characterized in that it comprises a circuit breaker (70) that cuts off the current and voltage when the abnormal change is notified through the plc (40).
According to claim 1,
It is characterized by operating the circuit breaker 70 by determining an abnormal load if there is more than 30% variation within 1 second by comparing the previous load value and the current load value of the electric device 10 through the SCADA program. Fire detection control system using the SCADA program.
According to claim 1,
The detection sensor unit 20 is a fire detection control system using a scan program, characterized in that input by transmitting to the PLC (40) by sensing the temperature or current value of the load of the electrical device (10).
According to claim 1,
The plc (40) is a fire detection control system using a SCADA program, characterized in that it consists of a central control unit in charge of control processing, an input unit that receives an input signal and passes it to the central control unit, and an output unit that delivers the result of the processed signal. .
According to claim 1,
The amplifier 50 amplifies the output voltage by a preset gain and outputs it as a reference voltage.
In the fire detection control method using the Scada program,
A first step of detecting an operating temperature of the electric device 10;
A second step of sensing the temperature of the electric device 10 by the temperature sensor unit 20;
A third step of comparing temperature calculation and allowable temperature in the temperature sensor unit (20);
A fourth step of converting the converted temperature into an analog signal through the converter 30 when the calculated temperature exceeds the allowable temperature;
A fifth step of connecting the analog signal to the input terminal of the plc (40) to determine whether the load is abnormal through a scan program;
A sixth step of notifying the control device 60 when it is determined that the abnormal load is in the fifth step;
The control device 60 is a fire detection control method using a SCADA program characterized in that it comprises a seventh step to notify the administrator to take action and to operate the circuit breaker (70).
The method of claim 6,
In step 5, comparing the previous load value and the current load value of the electric device 10 through the SCADA program, if there is more than 30% variation within 1 second, it is determined as an abnormal load and operates the circuit breaker 70 A fire detection control method using a SCADA program, which is characterized in that.

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