KR20200011229A - Fire detection system with temperature monitoring function - Google Patents

Abstract

The present invention relates to a fire detecting device having a temperature monitoring function which comprises: a smoke detector for detecting smoke; an analog addressable heat detector for detecting heat; a flame detector for detecting flame; and a temperature monitoring control unit for monitoring the detected temperature using the heat detector in real time.

Description

Fire detection system with temperature monitoring function

The present invention relates to a fire detection device, and more particularly to a fire detection device having a temperature monitoring function.

As a fire detection and alarm countermeasure for large spaces, such as inside and outside of ships, plants and buildings, smoke detectors to detect the occurrence of smoke, temperature detectors to detect the ambient temperature, flame detectors to detect the occurrence of flame, etc. The system has been configured and applied to arrange a plurality and to detect the occurrence of a fire according to the operation of each detector.

 The Fire Detection & Alarm System used in ships consists of the main panel, smoke detector, heat detector, flame detector, and manual call point.

The system is largely divided into 'conventional' and 'analog addressable'.

Conventional method detects fire in the field and delivers only simple switch signal to receiving panel.In modern analog addressable method, all detectors have their own address and have a built-in CPU. It can output to the receiving panel, can implement the function of artificial intelligence.

The detection method of the heat sensor according to the related art provides only a function of alarming through an alarm when the analog addressable heat sensor merely detects a predetermined temperature (preset temperature) of the analog signal output to the receiving panel.

As a result, it was not possible to determine in real time how much the current temperature of the region, and because it does not receive the real-time temperature information, there was a problem that it is difficult to implement a pre-alarm or fire prevention measures.

There is a big difference between the part where the temperature of the site is known in real time and the part that does not know the temperature of the site in real time and only provide an alarm when a certain temperature is reached. If only a warning is given when a certain temperature is reached, an alarm will be given only when a fire breaks out, and afterwards, the cargo hold temperature can be adjusted to prevent spontaneous ignition of the cargo. have.

In the past cases, fires were caused by spontaneous ignition of cargo due to the increase of the cargo hold temperature of the container ships, which resulted in many cases of ship damage, and it was difficult to extinguish the fires in the container early. .

In addition, ships can navigate the tropics and the equator, and the cargo hold sealed Hatch Cover can increase the temperature inside, and the type of cargo inside the container cannot be accurately determined by the navigator. Even if it is, it should be regarded as impossible to know and cope with the physical properties and characteristics.

Therefore, there is an urgent need for research and development of a fire detection device that monitors the temperature of the container cargo hold in real time to prevent fire due to spontaneous ignition of cargo inside the container.

Korea Patent Registration 10-1311950

The present invention is to overcome the above-mentioned conventional problems, the problem to be solved by the present invention is introduced here is the temperature of the container cargo hold using a thermal sensor of the "Analog Addressable method" among the components described above. To monitor in real time to provide a fire detection device to prevent fire due to spontaneous ignition of the cargo inside the container.

In addition, the product introduced here uses an analog addressable thermal sensor used in the Fire Detection & Alarm System to monitor the temperature around the detector in real time. It is to provide a system to prevent fire by proactively detecting and adjusting cargo hold temperature by providing pre-alarm and main alarm at the temperature set in.

According to an exemplary embodiment of the present invention, a fire detection device having a temperature monitoring function, comprising: a smoke detector for detecting smoke; An analog addressable heat detector for sensing heat; A flame detector for detecting a flame; and a temperature monitoring control for monitoring the temperature sensed using the heat detector in real time.

A flame detector for detecting a flame; And a gas detector for sensing a gas.

The control panel unit may monitor the smoke detected from the smoke detector in real time.

The electronic device may further include an alarm unit configured to output an alarm when the temperature detected by the heat detector is higher than the alarm set temperature.

And a loop card section for communicating with the heat detector or the smoke detector, wherein the loop card section calls the heat detector or the smoke detector using power line communication, and the called detector reads the temperature information or the smoke detection information. The information is transmitted to the loop card unit, and the transmitted information is transmitted to the control panel unit.

If the IP address (waterproof grade) of the analog addressable thermal sensor is increased and installed in the container cargo hold and equipped with a real-time temperature monitoring system, open the hatch cover or operate the ventilation fan when the temperature rises in the cargo hold. By lowering the elevated temperature to prevent the fire occurring in the container in advance can be obtained.

1 is a schematic configuration diagram of a fire detection apparatus having a temperature monitoring function according to the present invention.
2 is a control panel according to an embodiment of the present invention.
3 is a smoke detector according to an embodiment of the present invention.
4 is a heat sensor according to an embodiment of the present invention.
5 is a manual call point according to an embodiment of the present invention.
6 is an operation explanatory diagram of a fire detection device having a temperature monitoring function according to the present invention.
7 is a circuit diagram.
8 is a diagram showing waveforms of power line communication according to the present embodiment.
9 is a view showing an edit screen, Figure 10 is a view showing a fire alarm.
FIG. 10 shows a state where a fire alarm has occurred, FIG. 11 shows a VIWE DEVICE menu, and FIG. 12 shows a monitering mode.
It is a schematic block diagram of a control panel.
14 is a diagram illustrating a temperature setting edit screen.
15 is a view illustrating a VIEW DEVICE screen for checking the temperature.
16 is a diagram illustrating a screen during a fire alarm.
17 is a diagram illustrating a screen of a monitoring mode.

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

1 is a schematic configuration diagram of a fire detection apparatus having a temperature display function according to the present invention, Figure 2 is a control panel according to an embodiment of the present invention, Figure 3 is a smoke detector according to an embodiment of the present invention, 4 is a heat detector according to an embodiment of the present invention, and FIG. 5 is a manual call point according to an embodiment of the present invention.

Referring to FIG. 1, a fire detection apparatus having a temperature display function according to the present invention includes a control panel (control unit), a smoke detector, a heat detector, a flame detector, and a manual call. point).

The control panel (control unit) shown in FIG. 2 includes a temperature monitoring function. Powerline communication is possible up to 4 km, and the system is configured to operate normally even when the loop line is disconnected by bidirectional communication, and it is equipped with a function to display the disconnected position. . When configured as a gas detector, it combines scalability with configurable fire and gas detection systems.

In the present embodiment, the control panel is configured with the following specifications, but this is only an example for description, and the invention is not limited thereto.

-4 Analogue addressable loops (able to extend 12 loops) or 32 Conventional loops

Primary power source: AC 115 or 230VAC

-Secondary power source: 230VAC or 24VDC

-Emergency battery: 24VAC 12AH

Power consumption: 150W max.

-Ambient temperature: -5 ~ 55 ℃

-Max. cable distance: 4 km

-Dimension: 272W x 138H x 72D mm

-Weight: Approx. 5 kg (main control panel)

-8 channel standard relay outputs (24VDC, 250VAC / 2A)

-8 channel programmable relay outputs (24VDC, 250VAC / 2A)

-2 channel external sounder output (24VDC / 2A)

-1 TCP-IP LAN port

-2 USB flash memory port

-Tested according EN 54

Active & passive repeater by client's option

Referring to the smoke detector shown in FIG. 3, the smoke detector is an analog detector capable of outputting data such as a main alarm, a preliminary alarm, a failure alarm, a dust alarm, an isolating alarm, and the like.

The smoke detector has its own protection function by adding an isolating circuit inside each detector. If the detector is connected to the control unit, the smoke detector can be operated normally even if the circuit is shorted, short circuited or disconnected.

  The isolating circuit board is mounted on the isolating base and is designed to protect the smoke detector from short circuit, short circuit and electric shock. It can also transmit the isolating operation signal to the control unit to locate the problem wire. Tell me exactly.

In the present embodiment, the smoke detector is composed of the following specifications, but this is only an example for description, and the invention is not limited thereto.

Type: Intrinsically safe optical smoke detector

-Communication method: powerline communication (BI standrad) / RS-485

Sampling frequency: 1 per second

Operation power: DC 17 ~ 26 V

Alarm current: 3 mA

Alarm analog value: 15 ~ 25

-Operation temperature: -30 ~ 70 ℃

-Operation humidity: 10 ~ 95% RH (Non-condensation)

-Size: 102W x 67.5D mm

-Material: flame retarding ABS (V-0)

-Tested according EN 54-7

-Wiring: 2 line (no polarity)

Standby current: 350 uA

Alarm analog value: 15 ~ 25

Weight: 174 g

Ex protection: Ex ia IIC T4 / T5

IECEx, ATEX

IP 44

The heat detector shown in FIG. 4 is a self-addressing type and also an analog detector capable of outputting data such as main alarm, pre-alarm, fault alarm, dust alarm, and isolating alarm.

The thermal detector (JINDOGE-HT) has its own protection function by adding an isolating circuit inside each detector. If the detector is connected to the control unit, normal operation is possible even if the circuit is shorted, short circuited or disconnected.

  By converting the temperature in the field into a resistance value, the converted voltage value is converted into an analog digital signal using the driving circuit of the temperature sensor, and the temperature can be checked in real time.

In the case of the present embodiment, the thermal sensor is composed of the following specifications, but this is only an example for description, and the invention is not limited thereto.

Communication method: powerline communication

                           (BI standrad) / RS-485

Sampling frequency: 1 per second

Operation power: DC 17 ~ 26 V

Alarm current: 3 mA

-Operation temperature: -30 ~ 70 ℃

-Operation humidity: 10 ~ 95% RH (Non-condensation)

-Size: 102W x 67.5D mm

-Material: flame retarding ABS (V-0)

-Tested according EN 54-5

-Wiring: 2 line (no polarity)

Standby current: 350 uA

Alarm analog value: 55

Weight: 162 g

Ex protection: Ex ia IIC T4 / T5

IECEx, ATEX

-IP 55, IP 67

The manual call point shown in FIG. 5 is a self-addressed type manual transmitter which transmits an internal S / W operation signal to a receiving panel by pressing the front glass.

By adding isolating circuit inside, it has self-protection function. If this transmitter is connected to the control unit, normal operation is possible even in case of short circuit, short circuit and disconnection of circuit. It is available in a variety of types and IP grades for installation in wall, console, and outdoor areas.

In the present embodiment, the transmitter is composed of the following specifications, but this is only an example for description, and the invention is not limited thereto.

Operation power: DC 17 ~ 28 V

Working current: 360 uA

-Operation temperature: -25 ~ 70 ℃

-Operation humidity: 0 ~ 95% RH (Non-condensation)

-Size: 87W x 87H mm

-Material: KS M 3347 (ABS, plastic)

-Tested according EN 54-11

-Wiring: 2 line (no polarity)

Weight: 200 g

IECEx, ATEX

IP 22, IP 44, IP 67

Differences between the present invention and the prior art are shown in Table 1 below.

The present invention Prior art Construction Possible to construct loop line because it has individual address (saving cable installation) Individual line configuration required
(Increased cable routing) Two-way communication is possible in case of line breakage, so normal temperature monitoring is possible It is impossible to monitor the temperature of the relevant area by one-way communication in case of disconnection Track length Possible to configure 4Km Loop through power line communication (convenient cable layout) Temperature transmitter module (4 ~ 20mA) output limited to within 1km Danger zone
 install Intrinsically safe product can be installed in any hazardous area Limited installation with pressure-resistant explosion-proof structure Reception Use of fire detection device receiver on board Separate monitoring receiver installation Installation cost Low cost of installation and maintenance due to loop configuration, no receiver, domestic product Separate line configuration, additional receiver board, high installation cost and maintenance cost with foreign products

6 is an operation explanatory diagram of a fire detection device having a temperature monitoring function according to the present invention.

Referring to Figure 6, the temperature monitoring system is composed of a detector and a receiving panel and displays the temperature and outputs the alarm as shown below. The sensor calculates the temperature and sends it to the receiving panel. The temperature value is called an analog value.

[Temperature sensor (NTC sensor)]

NTC (Negative Temperature Coefficient Thermistor) sensor is a sensor whose resistance value changes with temperature, and it is often abbreviated as NTC as a thermistor sensor whose electrical resistance continuously changes with a negative temperature coefficient. The sensor used in the detector is manufactured and manufactured by MURATA and has a resistance of 100KΩ at 25 ℃.

The error range of the temperature sensor was confirmed to be ± 3 degrees based on our own test, and the results are shown in Table 2 below.

Actual temperature (℃) Measurement temperature (℃) Error (℃) 30 30 0 35 34 One 40 39 One 45 44 One 50 49 One 55 54 One 60 60 0 65 64 One 70 67 3 75 73 2 80 78 2 85 82 3

<Temperature sensor accuracy measurement result>

[Configuration of Circuit (Sensor Circuit)]

In the circuit diagram shown in FIG. 7, when the temperature sensors RT1 and R21 are connected in series and VCC 3V is applied, voltage is distributed from the ADC IN line.

  R21 used 100KΩ for the measurement. RT1 (NTC sensor) is NTC sensor that changes according to temperature, so if the resistance value of NTC sensor is high, it becomes 0V, and if the resistance value of NTC sensor is low, it is close to 3V.

[CPU]

The voltage that changes according to the temperature is input to the AD (Analog To Digital) port of the CPU, and the analog (voltage value) is converted to digital by the CPU program.

 The converted digital value is converted from 6 to 249, and the CPU calculates this value and converts it to temperature (0 ℃ ~ 126 ℃).

  Whenever the CPU changes from (0 ℃ ~ 126 ℃), the CPU stores it. When a call comes from Loop Card, it transmits with +1. (Send from 1 to 127. The reason for +1 is Device Fault when it is 0. In Loop Card, -1 is passed to Mian CPU and LCD display is from 0 to 126.)

  The detector calculates the voltage value of the AD (Analog To Digital) port as temperature and transmits it repeatedly when data is requested from the loop card.

  Table 3 below shows the data sheet (temperature and NTC resistance values) provided by the sensor company, and summarized by calculating the voltage value, digital value and the corresponding temperature value.

Temperature (℃) NTC resistance value (Kohm) NTC / (NTC + 100K) Applied voltage value (V) CPU voltage (V) DIGITAL calculation -40 4221.28 0.9769 3 2.9306 249 -35 2995.04 0.9677 3 2.9031 247 -30 2147 0.9555 3 2.8665 244 -25 1554.6 0.9396 3 2.8187 240 -20 1136.69 0.9191 3 2.7574 234 -15 839.019 0.8935 3 2.6805 228 -10 624.987 0.8621 3 2.5862 220 -5 469.678 0.8245 3 2.4734 210 0 355.975 0.7807 3 2.3421 199 5 272.011 0.7312 3 2.1936 186 10 209.489 0.6769 3 2.0307 173 15 162.559 0.6191 3 1.8574 158 20 127.057 0.5596 3 1.6787 143 25 100 0.5000 3 1.5000 128 30 79.222 0.4420 3 1.3261 113 35 63.167 0.3871 3 1.1614 99 40 50.677 0.3363 3 1.0090 86 45 40.904 0.2903 3 0.8709 74 50 33.195 0.2492 3 0.7477 64 55 27.091 0.2132 3 0.6395 54 60 22.224 0.1818 3 0.5455 46 65 18.323 0.1549 3 0.4646 39 70 15.184 0.1318 3 0.3955 34 75 12.635 0.1122 3 0.3365 29 80 10.566 0.0956 3 0.2867 24 85 8.873 0.0815 3 0.2445 21 90 7.481 0.0696 3 0.2088 18 95 6.337 0.0596 3 0.1788 15 100 5.384 0.0511 3 0.1533 13 105 4.594 0.0439 3 0.1318 11 110 3.934 0.0379 3 0.1136 10 115 3.38 0.0327 3 0.0981 8 120 2.916 0.0283 3 0.0850 7 125 2.522 0.0246 3 0.0738 6

[LOOP CARD]

The loop card is a device that communicates with a detector, and uses power line communication. The power line communication sends a communication waveform to a 24V power supply as shown in FIG.

The sensor is called by using power line communication. When the address is called, the sensor transmits temperature information to the loop card and transmits the information to the main CPU using internal communication.

[MAIN CPU & LCD]

Temperature information transmitted using internal communication is collected by MAIN CPU and displayed on the LCD. In addition, MAIN CPU sends output to LCD, LED, RELAY, VDR when it is higher than set temperature.

9 is an EDIT DEVICE menu of the MAIN screen, and the user can set the LCD touch screen in units of 1 ° C by using the UP and DOWN buttons.

When the detector temperature exceeds the set temperature, a fire alarm is generated (see FIG. 10).

In the VIWE DEVICE menu, you can check 1 DEVICE information (see Fig. 11), and you can see 20 information in Monitering Mode at a glance (see Fig. 12), change Loop with UP, DOWN buttons, and use NEXT button. 20 devices can be monitored.

[Print]

128 relays can be output and each can be set for each Devcie. Output and communication can be linked with VDR, AMS, and MODBUS.

[Temperature Monitoring System]

It is a temperature monitoring system using analog addressable heat detector. It can monitor 127 heat detectors per loop, and the main panel can check the changing temperature in real time through 7-inch LCD. The temperature can be set separately in units of 1 ℃, and a fire alarm occurs at the set temperature.

-Configuration and description of the control panel

Main Panel performs Main Control functions such as all function setting of System, Data Backup, etc., and temperature setting, confirmation and monitoring can be done through 7-inch Touch LCD.

It is a schematic block diagram of a control panel.

(a) Configuration and description of the control panel

① Fire Alarm Indicator

It is composed of red LED and indicates the fire alarm status. Blinking in case of Fire Alarm.It lights when user recognizes the fire situation and touches the ACK button activated on the LCD.

② Power Indicator

It consists of green LED and lights when power is supplied.

③ Test Mode Indicator

It is composed of green LED and lights when test mode is executed.

③ Pre-Alarm Indicator

It is composed of red LED and displays Pre-Fire Alarm status. Blinking when Pre-Fire Alarm occurs.It lights when user recognizes Pre-Fire Alarm situation and touches the ACK button activated on LCD and turns off when Pre-Fire Alarm Reset.

⑤ Warning Alarm Indicator

It is composed of yellow LED and lights up when the detector's normal function is not executed.

⑥ System Fault Indicator

It consists of amber LEDs and indicates the System Fault Alarm status. Blinking when System Fault Alarm occurs. It lights when user recognizes System Fault Alarm situation and touches ACK button activated on LCD. Turned off when the System Fault Alarm is cleared.

⑦ Disablement Indicator

It is composed of yellow LED and lights when setting disablement.

⑧ Communication Alarm Indicator

It is composed of yellow LED and lights when communication between Main Panel and Intercface Panel or Repeater Panel does not work properly.

⑨ Touch LCD Display

It is composed of 7 ”Touch LCD and can display and set all of the system. When an event occurs, the touch window suitable for the situation is activated and the system can be controlled by touching the activated input window.

⑩ Home Button

Press this button to return to the initial mode.

⑪ Menu Button

Press this button to enter Menu Mode.

⑫ Pre Button

Press this button to return to the previous mode.

⑬ Next Button

Press this button to enter the next mode.

⑭ Mute Button

Press this button to mute the internal buzzer.

⑮ Dimmer Button

Press this button to adjust LCD brightness. The brightness is adjusted in five steps and gradually gets darker with each press. In the fifth step, the LCD brightness is minimum, and if you press it again, it returns to the first step.

(b) Temperature setting method

How to set the temperature can be modified in EDIT DEVICE.

MENU-> 5. SYSTEM CONFIGURATION-> 1. LOOP CONFIGURATION-> 1. ADDRESSABLE LOOPS-> 3. EDIT DEVICE-> 3. Enters SELECT LOOP and is displayed on the screen as shown below (see Figure 14). ).

(c) Temperature Checking Method

The temperature can be checked in the "VIEW DEVICE" menu of the Main LCD Panel.

MENU-> 5.SYSTEM CONFIGURATION-> 1.LOOP CONFIGURATION-> 1.ADDRESSABLE LOOPS-> 3.VIEW DEVICE-> 3.SELECT MODE

Pressing the UP and DOWN buttons changes to another device and is displayed as (Temp) next to the device name. (See Figure 15)

In case of Heat Detector, it is indicated as (Temp) next to Device name.

Press the DISCIPTION button to display the virtual key and enter the location or information. This information is displayed in Fire Alarm, Pre Alarm, View Device, and Monitoring Mode.

(d) FIRE ALARM

 If the detector's temperature is higher than the temperature set by the user, the Fire Alarm will be triggered as follows. At this time, the LED and the buzzer will sound repeatedly, and if you touch the ACK button, the LED and the buzzer will turn off.

Loop, Zone, Address, Discription and Temperature are displayed in case of Fire Alarm (see Fig. 16).

(e) Smoke and temperature monitoring modes

This mode is to monitor the smoke and temperature in real time, and the installation location and temperature are displayed.

Press MONITERING MODE in the Main Menu to display as shown below (see Figure 17).

Press the UP button to move from Loop1 to Loop2, Loop3, Loop4.

Press DOWN button to move from Loop4 to Loop3, Loop2, Loop1.

Press the EXIT button to go to the upper menu.

A total of 20 device information is displayed on the screen. Press NEXT button of Page to move to the next page.

When you reach the last page and press the NEXT button, you go to the first page.

In Monitering Mode, the value of analog and temperature changes between the actual inspections, and when a Fire Alarm occurs, the screen changes to the Fire Alarm screen.

What has been described above is only an exemplary embodiment of a fire detection device having a temperature display function according to the present invention, the present invention is not limited to the above embodiment, as claimed in the following claims, the present invention Without departing from the gist of the present invention, those skilled in the art to which the present invention pertains to the technical spirit of the present invention to the extent that various modifications can be made.

Claims (5)

Fire detection device with temperature monitoring function,
A smoke detector for detecting smoke;
An analog addressable heat detector for sensing heat;
And a control panel for monitoring the temperature sensed by the heat detector in real time.
The method according to claim 1,
A flame detector for detecting a flame; And
Fire detection device having a temperature monitoring function further comprising; a gas detector for detecting a gas.
The method according to claim 1,
The control panel unit fire detection device having a temperature monitoring function, characterized in that for monitoring the smoke detected from the smoke detector in real time.
The method according to claim 1,
And a alarm unit for outputting an alarm when the temperature detected by the heat detector is higher than an alarm set temperature.
The method according to claim 1,
And a loop card section for communicating with the heat detector or the smoke detector, wherein the loop card section calls the heat detector or the smoke detector using power line communication, and the called detector reads the temperature information or the smoke detection information. A fire detection apparatus having a temperature monitoring function, characterized in that the transmission to the loop card unit, and the transmitted information to the control panel unit.

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