Air-breathing fire detector capable of accurately positioning and fire source detection method thereof

Abstract

The invention discloses an air-breathing fire detector capable of accurately positioning. The air-breathing fire detector is characterized by comprising a main detection cavity, a main pipeline, a CO gas collection unit, a controller, a fan, an infrared laser transmitter, an infrared laser receiver, an air inlet hole and other key components. The invention further discloses a fire source detection method. According to the method, multiple technical means are combined to achieve efficient and accurate fire monitoring and positioning. The detector sucks an air sample through the operation of the fan, and monitors the concentration change of carbon monoxide (CO) in the air by using the CO gas collection unit, so as to preliminarily judge whether a fire occurs or not. Once a fire sign is detected, the detector immediately starts a finer fire source positioning mechanism. The mechanism is based on an infrared laser technology, that is, an infrared laser emitter emits laser beams, and when the laser beams irradiate smoke particles, scattering or reflection occurs. The reflected signals are received and analyzed through the carefully arranged infrared laser receiver, and the detector can quickly determine the source position of the fire or the specific position of the fire. According to the design of the invention, the plurality of air inlets are respectively arranged at different positions of the to-be-detected area. Therefore, the detector can monitor a plurality of areas in real time at the same time, and timely discovery and processing of fire hazards are ensured, so that expansion and deterioration of fire accidents are effectively avoided.

Description

Technical Field

[0001] The present invention relates to the field of fire detection, and in particular to an aspirating laser smoke detector and a fire source detection method capable of accurately locating the fire source. Background Art

[0002] In open and closed places such as warehouses, factories, gymnasiums, or information core areas such as data storage stations and telecommunications rooms, the risk of fire is significant due to the dense combustibles and numerous power distribution equipment. Once a fire occurs, the fire spreads rapidly, which may cause incalculable losses to the unit, especially posing a serious threat to the continuity of key businesses. Due to the deficiencies of traditional fire detectors in terms of sensitivity and source location in the early stages of fire, the present invention is dedicated to introducing an innovative smoke detection alarm device and a method for detecting the source of fire. The device combines highly sensitive smoke detection technology, high-precision infrared laser positioning technology and intelligent data analysis algorithms, and can quickly capture signs of fire in the early stages of a fire, even when smoke and CO concentrations are low. Through the emission and reception of infrared laser beams, combined with advanced positioning technology, the device can accurately lock the location of the source of the fire, providing key information for rapid response and effective fire extinguishing. In addition, the smoke detection alarm device and fire source detection method of the present invention provide a more efficient and accurate fire monitoring solution for high-risk places, which helps to implement effective control in the early stages of a fire, minimize the losses caused by the fire, and ensure personnel safety and business continuity. Summary of the invention

[0003] In order to solve the above problems, the present invention provides an aspirating fire detector that can be accurately positioned and a method for detecting the source of fire thereof, which are used to solve the problems mentioned in the background technology.

[0004] The present invention adopts the following technical solutions:

[0005] The present invention designs an aspirating fire detector capable of precise positioning, which is characterized by comprising: a main detection chamber, a main pipeline, a CO gas collection unit, a controller, a fan, an infrared laser transmitter, an infrared laser receiver, and an air inlet.

[0006] The main detection chamber described in the present invention is provided with a fan and a CO gas collection unit inside, and is connected to the main pipeline outside, and the connection is through. The main detection chamber is connected to the controller through a data line.

[0007] The CO gas collection unit described in the present invention includes a semiconductor CO gas sensor, an adjustable resistor, an alarm, and a power supply, and the four parts are connected in series. The semiconductor CO gas sensor increases its resistance as the CO concentration in the surrounding environment increases, thereby reducing the current in the circuit. When the collected CO concentration exceeds the calibration concentration, the current decreases below the calibration current, and the alarm sounds an alarm.

[0008] The controller described in the present invention includes a processor, a memory (4-2), and a user interface. The controller can control the switch of the infrared laser transmitter, the suction and exhaust modes of the fan, monitor the signal obtained by the infrared laser receiver, and obtain the current condition in the circuit of the CO gas collection unit. The controller is installed in the duty room. When a fire occurs, the user interface will directly display the fire information and the location of the fire source.

[0009] The fan described in the present invention is placed in the main detection chamber, and the fan can realize air suction and air blowing by forward and reverse rotation.

[0010] The infrared laser transmitter described in the present invention is located at the other end of the main pipeline connected to the main detection cavity, and the laser emitted by the infrared laser transmitter can directly irradiate the main detection cavity along a straight line.

[0011] The main pipe body described in the present invention is in a straight line. The upper end of the main pipe is provided with infrared laser receivers at a certain interval, and the lower end is provided with air inlets at the same interval, and the air inlets correspond to the infrared laser receivers one by one. The number of infrared laser receivers and air inlets is more than 2, and the distance between two adjacent air inlets is more than 0.5m.

[0012] By cleverly distributing the air intake holes in the rooms connected in series, the smoke detection system can monitor multiple rooms at the same time, greatly improving the efficiency and comprehensiveness of fire warning. In large open spaces such as factories, warehouses, and gymnasiums, the system can be installed on the top, using its wide coverage to quickly and accurately locate the specific location of the fire. In addition, in key facilities such as data centers and telecommunications rooms, the smoke detection system can be installed closely around the pipeline layout to provide key protection for these core equipment, effectively reducing the devastating impact that a fire may have on important infrastructure, and ensuring data security and business continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a circuit diagram of the CO gas collection unit of the present invention.

[0016] Figure 3 It is a schematic diagram of the structure of the controller of the present invention.

[0017] Figure 4 A schematic flow chart of a fire source detection method provided by the present invention.

[0018] In the figure: 1. main detection chamber; 2. CO gas collection unit; 3. controller; 3-1. semiconductor CO gas sensor; 3-2. adjustable resistor; 3-3. alarm; 3-4. power supply; 4. controller; 4-1. processor; 4-2. memory; 4-3. user interface; 5. fan; 6. infrared laser transmitter; 7-1. infrared laser receiver 1; 7-2. infrared laser receiver 2; 7-3. infrared laser receiver 3; 7-4. air inlet 4; 7-5. air inlet 5; 8-1. air inlet 1; 8-2. air inlet 2; 8-3. air inlet 3; 8-4. air inlet 4; 8-5. air inlet 5. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0020] The present invention provides an air-suction fire detector capable of accurate positioning and a method for detecting the source of a fire, the overall structural diagram of which is shown in FIG. Figure 1 As shown, it consists of 1, a main detection chamber 2, a CO gas collection unit 3, a controller 4, a controller 5, a fan 6, an infrared laser transmitter 7, an infrared laser receiver 8, and an air inlet.

[0021] like Figure 1 As shown, the fan and the CO gas collection unit are both located in the main detection chamber, ensuring that the fan can inhale and exhaust smoke into and out of the main detection chamber, and the CO gas collection unit can collect CO gas in the main detection chamber. The main detection chamber is connected to the controller via a data line, ensuring that the controller can obtain status information of each component in the main detection chamber in real time and issue appropriate instructions. The main detection cavity is connected to the main pipeline, the connection is through, and the main pipeline body is in a straight line. Infrared laser receivers are arranged at a certain interval on the upper end of the main pipeline, and air inlets are arranged at the same interval on the lower end, and the air inlets correspond to the infrared laser receivers one by one.

[0022] like Figure 2As shown, the CO gas collection unit includes a semiconductor CO gas sensor, an adjustable resistor, an alarm, and a power supply, and the four parts are connected in series. The resistance of the semiconductor CO gas sensor increases as the CO concentration in the surrounding environment increases, thereby reducing the current in the circuit. When the collected CO concentration exceeds the calibrated concentration, the current drops below the calibrated current, and the alarm sounds an alarm.

[0029] like Figure 3 As shown, the controller includes a processor, a memory, and a user interface. The controller can control the switch of the infrared laser transmitter, the suction and exhaust modes of the fan, monitor the signal obtained by the infrared laser receiver, and obtain the current in the circuit of the CO gas collection unit. The controller is installed in the duty room. When a fire occurs, the user interface will directly display the fire information and the location of the fire source.

[0030] like Figure 4 As shown, the specific working process of the present invention is as follows: the system is turned on, the controller turns on the fan to make it rotate forward and start to inhale air, and the air is sucked into the main detection chamber from each suction hole: When the CO collection unit detects CO gas for the first time, the alarm starts to sound, the controller controls the fan to reverse, and the smoke begins to be discharged from the main detection chamber and the main pipeline. When the CO collection unit detects that the CO concentration drops below the calibration concentration, the controller turns on the infrared laser transmitter and controls the fan to start rotating forward to inhale air. When smoke enters the main pipeline from the air intake hole, the laser emitted by the infrared laser transmitter is refracted to the corresponding infrared laser receiver. According to the response of the infrared laser receiver, the air intake hole corresponding to the receiver that first receives the infrared laser is the location of the fire source. The location of the fire source is determined by the processor and a signal is transmitted to the user interface.

[0031] The above is only the most effective implementation scheme of the present invention. It should be pointed out that for ordinary technicians in this technical field, appropriate improvements and modifications can be made without departing from the working principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An aspirating fire detector capable of accurate positioning, characterized in that: It comprises a main detection chamber (1), a main pipeline (2), a CO gas collection unit (3), a controller (4), a fan (5), an infrared laser transmitter (6), an infrared laser receiver (7), and an air inlet (8).

2. The air-suctioning fire detector capable of accurate positioning according to claim 1, characterized in that: The main detection chamber (1) is connected to the main pipeline (2), and the connection is through. The main detection chamber (1) is connected to the controller (4) via a data line.

3. The aspirating fire detector capable of accurate positioning according to claim 1, characterized in that: The CO gas collection unit (3) comprises a semiconductor CO gas sensor (3-1), an adjustable resistor (3-2), an alarm (3-3), and a power supply (3-4); The CO gas collection unit (3) is located in the main detection chamber (1); The semiconductor CO gas sensor (3-1), the adjustable resistor (3-2), the alarm (3-3) and the power supply (3-4) are connected in series. The CO collection unit (3) is used to collect the CO concentration in the gas detection chamber and to issue a CO alarm when the collected CO concentration exceeds a calibrated concentration.

4. The aspirating fire detector capable of accurate positioning according to claim 1, characterized in that: The controller (4) comprises a processor (4-1), a memory (4-2), and a user interface (4-3); The controller (4) can control the switch of the infrared laser transmitter (6), can control the air intake and exhaust modes of the fan (5), and can monitor the signal obtained by the infrared laser receiver (7); The user interface (4-3) can display the corresponding position of the infrared laser receiver (7) to determine the fire location.

5. The aspirating fire detector capable of accurate positioning according to claim 1, characterized in that: The fan (5) is placed in the main detection chamber (1), and the fan can achieve air suction and air blowing by rotating forward and reverse.

6. The aspirating fire detector capable of accurate positioning according to claim 1, characterized in that: The infrared laser emitter (6) is located at the other end of the main pipeline connected to the main detection chamber, and the light energy emitted by the infrared laser emitter is irradiated into the main detection chamber (1) along a straight line.

7. The aspirating fire detector capable of accurate positioning according to claim 1, characterized in that: The main pipeline (2) has a body in a straight line. Infrared laser receivers (7) are arranged at a certain interval on the upper end of the main pipeline (2), and air inlet holes (8) are arranged at the same interval on the lower end, and the air inlet holes (8) correspond one to one with the infrared laser receivers (7).

8. A method for detecting a fire source of a smoke detection system, applied to the smoke detection system according to any one of claims 1 to 7, characterized in that: The steps include: When the system is turned on, the controller (4) turns on the fan (5) to make it rotate forward and start to inhale air, and air is sucked into the main detection chamber (1) from each of the air inlet holes (8-1, 8-2, 8-3, 8-4, 8-5); When the CO collection unit (3) detects CO gas for the first time, the alarm starts to sound, the controller controls the fan (5) to reverse, and the smoke starts to be discharged from the main detection chamber (1) and the main pipeline (2). When the CO collection unit (3) detects that the CO concentration drops below the calibration concentration, the controller turns on the infrared laser emitter (6) and controls the fan (5) to start forward rotation to inhale air. When smoke enters the main pipeline (2) from the air intake holes (8-1, 8-2, 8-3, 8-4, 8-5), the laser emitted by the infrared laser transmitter is refracted to the corresponding infrared laser receiver (7-1, 7-2, 7-3, 7-4, 7-5), and the fire source position is determined by the processor according to the response of the infrared laser receiver, and a signal is transmitted to the user interface.

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