KR20000008505A - Automatic fire extinguishing system and controlling method thereof - Google Patents

Abstract

PURPOSE: An automatic fire extinguishing system and a controlling method thereof are provided to perform accurate and safe fire extinguishing and to prevent the mis-operation of the fire extinguishing system by having a function to warn the disorder of the sensors and the pressure leakage of the fire extinguisher. CONSTITUTION: The system is composed of:a sensing part(10) connected with many sensors to sense the fire; a control part(20) to control each parts of the system according to the result gained by analyzing the signals output from the sensing part; a fire extinguishing part(50) to fight against the fire by being controlled by the control part and by jetting the fire extinguishing agent; an inspection indication lamp to indicate the errors of each sensors; an indication part including a buzzer to issue an alarm sound when the sensing part senses the fire; an initializing switch to initialize the fire extinguishing part; and an operation part including an operation switch able to operate the fire extinguishing part optionally.

Description

Automatic fire-extinguishing system and control method

The present invention relates to a fire extinguishing device. Specifically, the present invention measures different fire factors (for example, smoke, heat, light, etc.) with a plurality of sensors, or measures the same fire factor with multiple sensors. It is about automatic fire extinguishing systems and control methods that only extinguish it, and only extinguish when all sensors detect a fire. In the related art, since the evolution was generally performed with only one sensor, the fire extinguishing operation was frequently performed even in a situation where the fire was not a real fire, and it was difficult to determine whether the sensor was abnormal.

Therefore, the present invention applies a plurality of sensors to perform the fire extinguishing only when each sensor is all recognized as a fire, otherwise it can be checked by the inspector, and incidentally whether the sensor abnormality and pressure leakage of the fire extinguisher It is an object of the present invention to provide a fire extinguishing system with a function of alarming.

Another object of the present invention is to provide a control method for efficiently controlling the fire extinguishing system.

1 is a block diagram showing the configuration of an automatic fire extinguishing system according to the present invention.

2 is a flowchart showing the operation of the automatic fire extinguishing system according to the present invention.

3 is a circuit diagram for detecting a sensor disconnection.

Description of the main parts of the drawing

10: detection unit 20: control unit

30: display part 40: operation part

50: fire extinguisher 31: A sensor indicator

32: B sensor indicator 33: Inspection indicator

34: Pressure leak indicator 35: Buzzer

36: Remote signal output terminal 41: Buzzer stop switch

42: return switch 43: reset switch

44: operation switch

The automatic fire extinguishing system according to the present invention includes: 1) a sensor connected to a sensor for detecting a fire, and 2) a controller for analyzing each signal output from the detector and controlling each component of the system according to the result; 3) It is a function that alarms the occurrence of fire and displays the current status of the system. It is a sensor indicator that displays the current status of the sensor and the detection result. 4) a display unit including a check indicator for indicating a time, a buzzer for generating an alarm sound according to a result of the detection unit detecting a fire, and 4) when an alarm occurs or a sensor is abnormal Return switch to turn off each indicator, reset switch to reset fire extinguisher to initial state, operation switch to operate fire extinguisher arbitrarily Under the control from the control panel and, 5) the control containing the value to include a digest that the function of the fire extinguishing medium to the radiation.

The display unit adds a pressure leakage indicator to indicate when the charging pressure of the fire extinguisher falls below the reference value, and a remote signal output terminal for outputting an electric signal for remote monitoring in the central control room according to a fire occurrence or sensor abnormality. Preferably, the operation unit preferably further includes a buzzer stop switch for manually turning off the buzzer alarm sound.

In addition, the automatic fire extinguishing system control method according to the present invention includes (1) determining which sensor among the plurality of sensors has detected a fire, and (2) when one sensor detects a fire, a) B) turning on the corresponding indicator and buzzer, b) resetting the sensor after the grace time has elapsed, c) determining whether there is a re-alarm within a certain time after the reset, and d) if there is a re-alarm, b) to c. Repeat step), if there is no re-alarm, turn on the light and turn off the buzzer, e) turn off the light according to the externally operated return switch input, and (3) if all the sensors detect a fire, Turning on the sensor light and buzzer, and extinguishing the fire extinguisher.

In the above, when an abnormality occurs in each sensor, it further includes a step of flashing a corresponding sensor indicator and lighting a check indicator, and adding a step of turning on a pressure leakage indicator and making a buzzer when the extinguishing agent filling pressure of the fire extinguishing unit falls below a reference value. When the sensor indicator light or the check indicator light or the pressure leakage indicator light or the buzzer is turned on, it is preferable to further include the step of outputting a remote signal for external remote monitoring at the same time.

Hereinafter, the automatic fire extinguishing system according to the present invention as a specific embodiment.

Configuration

1 is a block diagram of an automatic fire extinguishing system according to the present invention. The fire extinguishing system is composed of a sensing unit 10, the control unit 20, the display unit 30, the operation unit 40, the fire extinguishing unit 50.

The detection unit 10 is a place for detecting the occurrence of a fire smoke sensor, heat sensor, flame sensor, etc. is connected to output an electrical signal. Smoke sensors are used to detect smoke generated in a fire. Various types of sensors are available, such as ionized smoke sensors, stockpile photoelectric smoke sensors, and accumulated photoelectric smoke sensors. The thermal sensor is a sensor that senses the temperature and detects a fire. Various types of sensors are available, including differential spot type thermal sensor, constant temperature spot thermal sensor, differential distributed thermal sensor, and constant temperature linear thermal sensor. have. The flame sensor is a sensor that detects a flame such as a spark generated by a short circuit or an electrical short and reads a fire.

In FIG. 1, two sensors A and B are connected to the sensing unit 10. Here, the A sensor and the B sensor can be applied to the above-described smoke sensor, heat sensor, flame sensor, respectively. The reason for detecting a fire with a plurality of sensors is to avoid operating the fire extinguishing device by recognizing that the sensor is a fire even in a situation where the fire is not a real fire. When a fire occurs, the smoke is inevitably raised and the temperature rises. Therefore, the fire extinguishing system is operated only when both sensors recognize the fire, so that the fire extinguisher is accurate.

The control unit 20 functions to analyze the electric signal output from the sensing unit 10 and to control each component of the system according to the result. Here, a program can be entered into the microcomputer (MPU or MCU) to automatically perform all the control.

The display unit 30 functions to alarm the occurrence of fire and to display the current state of the system. The display unit 30 includes the A sensor indicator light 31 for displaying the current state and the detection result of the A sensor, the B sensor indicator 32 for displaying the current state and the detection result of the B sensor, and the operation state of the fire extinguishing device. A check indicator (33) for checking manually or when an abnormality occurs in the A sensor or B sensor, a pressure leak indicator (34) indicating when the charging pressure of the fire extinguisher in the fire extinguishing system falls below the reference value Buzzer 35 for generating an alarm sound according to the result that the unit 10 recognizes as a fire, and a remote for outputting an electric signal for remote monitoring in the central control room according to a fire occurrence or a sensor abnormality as described above. It consists of a signal output terminal 36. In addition, the display unit 30 may include a lamp indicating a power operation state.

The operation unit 40 may include a buzzer stop switch 41 for manually turning off the buzzer alarm sound, a return switch 42 for turning off each indicator light after the situation is canceled when an alarm occurs or an error occurs in the sensor. Initializing switch 43 for initializing the fire extinguisher, the fire switch is composed of an operation switch 44 capable of operating the fire extinguisher arbitrarily.

The fire extinguishing unit 50 functions to control the fire by radiating a fire extinguishing agent under the control of the control unit 20. The fire extinguishing unit 50 is similar to the structure of a general fire extinguishing device, and is usually composed of a fire extinguishing container filled with a fire extinguishing agent, an operating device for radiating a fire extinguishing agent, a bracket for fixing other batteries, and the like.

action

The operation of the fire extinguishing system of the present invention configured as described above will be described. First of all, if the fact that the fire occurs by the A sensor and the B sensor of the detection unit 10, the control unit 20 analyzes this. If not detected by both the A sensor and the B sensor, the control unit does not operate the fire extinguishing unit 50, and displays the current situation on the display unit 30 and the operation unit 40. This will be described in detail below. If both sensor A and sensor B detects a fire, it is regarded as a fire and is extinguished by operating the fire extinguishing unit 50.

Now, the operation and control method of the automatic fire extinguishing system according to the present invention will be described in more detail with reference to Tables 1 and 2.

Table 1 shows the state of the display unit 30 and the situation after the operation of the control unit 40 according to the detection state of the A sensor and the B sensor. 2 is a flow chart illustrating the operation of a system in accordance with the present invention. The following description will be given in the numerical order shown in Table 1. The numbers in square brackets [] indicate the reference numbers indicated in FIG. 2.

number condition A sensor light B sensor indicator Check indicator Pressure Leakage Indicator Buzzer Remote signal output terminal Digestive Function One Initial state × × × × × × × 2 A sensor alarm condition ○ × × × ○ ○ × Stop switch operation ○ × × × × ○ × Return switch operation after alarm disappears × × × × × × × 3 B sensor alarm condition × ○ × × ○ ○ × Stop switch operation × ○ × × × ○ × Return switch operation after alarm disappears × × × × × × × 4 A sensor, B sensor ○ ○ × × ○ ○ ○ Stop switch operation ○ ○ × × × ○ ○ 5 Operation switch operation × × ○ × × × ○ Reset switch operation × × × × × × × 6 An error occurs in the A sensor. Flashing × ○ × × ○ × Return switch operation after troubleshooting × × × × × × × 7 Error in B sensor × Flashing ○ × × ○ × Return switch operation after troubleshooting × × × × × × × 8 Pressure leakage × × × ○ ○ ○ × Return switch operation after recharging × × × × × × ×

① In Table 1, initial state indicates that all indicator lights, buzzer, remote signal output terminal are off, and fire extinguisher is not working [110].

② In the situation where only the A sensor emits an alarm [120], the A sensor indicator light 31 turns on, the buzzer 35 emits an alarm sound, and the remote signal is output from the remote signal output terminal 36 [121]. 50 does not work. At this time, the controller 20 clears or resets the signal for driving the A sensor after a predetermined grace time has elapsed [122] and checks whether the A sensor still alarms. If the A sensor alarms again after a certain time even though the A sensor is reset [124], the loop so far is repeated [127]. When the re-alarm does not occur, the buzzer turns off but the indicator 31 remains on. In the present invention, the grace time of [122] is set to 45 seconds, and the time from reset to re-alarm [124] is set to 10 seconds. This is because some sensors output sensing results after about 10 seconds to ensure sensor operation.

When only A sensor alerts, it means that there is a reason for alarm, so the inspector should examine A sensor or its surroundings to find out why A sensor alarmed. Only the A sensor detects the reason for the alarm, and when the situation is released, the A sensor indicator 31 can be turned off by the return switch 42 and the remote signal can be canceled.

On the other hand, when you want to stop the buzzer sound arbitrarily before the [125] step, the buzzer stop switch 41 may be operated. However, the A sensor indicator 31 and the remote signal output cannot be arbitrarily canceled. Because there is a reason to alert the A sensor somewhere now, it must be able to monitor it.

③ The situation where only the B sensor emits an alarm [130] is the same as in the above situation where only the A sensor generates an alarm. In other words, the B sensor indicator 32 turns on, the buzzer 35 emits an alarm sound, and the remote signal is output from the remote signal output terminal 36 [131], but the fire extinguisher 50 does not operate. At this time, the control unit 20 clears or resets the signal for driving the B sensor after a predetermined grace time has elapsed [132] and checks whether the B sensor still alarms again. If the B sensor alarms again when the B sensor is reset [134], the loop so far is repeated [137]. When the re-alarm does not occur, the buzzer turns off but the indicator 31 remains on. In the present invention, the grace time of [132] is set to 45 seconds, and the time from reset to re-alarm [134] is set to 10 seconds. This is because some sensors output sensing results after about 10 seconds to ensure sensor operation.

When only the B sensor alerts, it means that there is a reason for the alarm, so the inspector should examine the B sensor or its surroundings to find out why the B sensor alarmed. Only when the sensor B detects the reason for alarming and the situation is released, the sensor B 32 can be turned off by the return switch 42 and the remote signal can be canceled.

On the other hand, when you want to stop the buzzer sound arbitrarily before the step [135], the buzzer stop switch 41 may be operated. However, the B sensor indicator 32 and the remote signal output cannot be arbitrarily canceled. Because there is a reason for alarming the B-sensor somewhere, it must be able to monitor it.

④ When both A sensor and B sensor alarm [140], it means that a fire has occurred, so turn on both A sensor indicator light (31) and B sensor indicator light (32) and the alarm sound from buzzer (35). While extinguishing the remote signal is output [141] extinguishing unit 50 is operated to evolve [142]. In this case, the stop switch 41 may be operated to remove the buzzer alarm sound.

⑤ When the operation switch 44 is operated to test or check the fire extinguishing system, the check indicator 33 lights up and the fire extinguishing unit 50 operates. In this case, since no remote monitoring is necessary, no remote signal is output. Operation of the reset switch 43 returns to the initial state.

⑥ ⑦ If A sensor or B sensor is disconnected and there is a problem, A sensor indicator (31) or B sensor indicator (32) blinks and blinks and the check indicator (33) turns on together and a remote signal is output. . The disconnection of the sensor can be checked in the same manner as in FIG. 3. When the sensor waits in the circuit, it becomes Vo ≒ 5V because almost no current flows to the sensor, and when the sensor is operating, it becomes Vo ≒ Vcc because a lot of current flows in the sensor, and when the sensor is disconnected, it becomes Vo = 0V. This is read by the microcomputer of (20) and outputs a flashing signal to the A sensor indicator (31) or B sensor indicator (32). In addition to this method, checking the disconnection of the sensor can be easily performed by those skilled in the art. After the sensor abnormality is solved, such as repairing a fault of the sensor, the A and B sensor indicators 31 and 32 and the check indicator 33 are turned off and the remote signal is cleared to return to the initial state.

⑧ Fire extinguishing unit 50 When the extinguishing agent filling pressure of the fire extinguishing container drops below the reference value, the pressure leakage indicator 34 turns on and the buzzer 35 sounds and a remote signal is output. Recharging the extinguishing material and operating the return switch 42 returns to the initial state. The check of the extinguishing material filling pressure may be performed by the microcomputer of the control unit 20 by using a pressure sensing switch attached to the extinguishing container. This is also a technique that can be easily carried out by those skilled in the art.

As described above, according to the present invention by applying a plurality of sensors to perform the fire extinguishing only when each sensor detects that all the fire, otherwise the inspector can check to ensure accurate and safe fire extinguishing It works. In addition, it functions to alarm the abnormality of the sensor and the pressure leakage of the fire extinguisher to prevent malfunction of the calcining system in advance and to respond immediately in case of emergency.

Claims (7)

Detecting unit connected to the plurality of sensors to detect the fire, A controller which analyzes the signal output from the detector and controls each component of the system according to the result; A fire extinguishing unit which functions to extinguish a fire by radiating a extinguishing agent under control of a control unit It is a function that alarms the occurrence of fire and displays the current status of the system.Manual sensor indicators, which display the current status of each sensor and the detection result, check the operation status of the fire extinguisher manually or an error occurs in each sensor. A display unit including a buzzer for generating an alarm sound according to a result of detecting that the detection unit recognizes a fire; In the event of an alarm or an abnormality in the sensor, an operation unit including a return switch for turning off the respective indicator lights, an initializing switch for initializing the fire extinguisher, and an operation switch for arbitrarily operating the fire extinguishing unit after the situation is released. Automatic fire extinguishing system comprising a. The display unit of claim 1, wherein the display unit outputs a pressure leak indicator light to indicate when the extinguishing agent filling pressure of the fire extinguishing unit falls below a reference value, and an electric signal for remote monitoring in the central control room according to a fire occurrence or a sensor abnormality. Automatic extinguishing system further comprising a remote signal output terminal. The automatic fire extinguishing system according to claim 1 or 2, wherein the operation unit further comprises a buzzer stop switch for manually turning off the buzzer alarm sound. As a control method of the automatic fire extinguishing system configured as described in claim 1, (1) determining which of the plurality of sensors has detected a fire, (2) if any sensor detects a fire, a) turning on the indicator and buzzer corresponding to the sensor, b) resetting the signal driving the sensor after the grace time has elapsed, c) after reset Determining whether there is a re-alarm; d) repeating steps b) to c) if there is a re-alarm; turning on the light and turning off the buzzer if there is no re-alarm; Including turning off, (3) If all of the plurality of sensors detect a fire, the automatic fire extinguishing system control method comprising the steps of extinguishing the fire extinguisher by turning on each sensor indicator and the buzzer. The automatic fire extinguishing system control method according to claim 4, further comprising the step of flashing the corresponding indicator light and turning on a check indicator when an abnormality occurs in each sensor. The automatic fire extinguishing system control method according to claim 4, further comprising the step of turning on the pressure leakage indicator and making a buzzer when the extinguishing agent filling pressure of the extinguishing unit drops below a reference value. 7. The method of any one of claims 4, 5 and 6, further comprising the step of outputting an external remote monitoring remote signal at the same time when the sensor indicator, the inspection indicator or the pressure leakage indicator or the buzzer is turned on. Automatic fire extinguishing system control method.