Fire-fighting early warning system

Abstract

The utility model provides a fire-fighting early warning system, and belongs to the field of fire-fighting early warning. The fire-fighting early warning system comprises a first temperature sensor, a first air temperature comparator, a logic gate module, a second temperature sensor, a first switch, a first temperature comparator, a second temperature comparator, a central control module and an alarm module, the non-inverting input end of the first air temperature comparator is connected with the first temperature sensor, the inverting input end is used for receiving a reference air temperature value, and the output end is connected with the logic gate module; the fixed end of the first switch is connected with the second temperature sensor, the first movable end is connected with the in-phase input end of the first temperature comparator, the second movable end is connected with the in-phase input end of the second temperature comparator, and the control end is connected with the logic gate module; the inverted input end of the first temperature comparator is used for receiving a first reference temperature value, and the output end is connected with the central control module; the central control module is connected with the alarm module. The accuracy and reliability of the fire-fighting early warning system can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of fire warning, and in particular to a fire warning system. Background Art

[0002] The high temperatures, flames, and smoke generated by fires can cause direct harm to humans and damage building structures and internal facilities, resulting in significant property losses. Currently, fire early warning systems are not intelligent enough to adjust alarm thresholds based on environmental risks.

[0003] This shows that an accurate and reliable fire early warning system is urgently needed. Utility Model Content

[0004] The embodiments of the present disclosure provide a fire warning system to solve the problem of low accuracy and reliability of fire warning.

[0005] The embodiment of the present disclosure provides a fire warning system, comprising: a first temperature sensor, a first temperature comparator, a logic gate module, a second temperature sensor, a first switch, a first temperature comparator, a second temperature comparator, a central control module, and an alarm module;

[0006] The non-inverting input terminal of the first temperature comparator is connected to the first temperature sensor, the inverting input terminal is used to receive the reference temperature value, and the output terminal is connected to the logic gate module;

[0007] The fixed end of the first switch is connected to the second temperature sensor, the first movable end is connected to the non-inverting input end of the first temperature comparator, the second movable end is connected to the non-inverting input end of the second temperature comparator, and the control end is connected to the logic gate module;

[0008] The inverting input terminal of the first temperature comparator is used to receive the first reference temperature value, and the output terminal is connected to the central control module;

[0009] The inverting input terminal of the second temperature comparator is used to receive the second reference temperature value, and the output terminal is connected to the central control module;

[0010] The initial state of the first switch is connected to the non-inverting input terminal of the first temperature comparator;

[0011] The central control module is connected to the alarm module.

[0012] In an exemplary embodiment of the present disclosure, the fire warning system further includes: a wind speed sensor and a wind speed comparator;

[0013] The wind speed sensor is connected to the non-inverting input terminal of the wind speed comparator, the inverting input terminal is used to receive the reference wind speed value, and the output terminal is connected to the logic gate module.

[0014] In an exemplary embodiment of the present disclosure, the fire warning system further includes: a humidity sensor and a humidity comparator;

[0015] The humidity sensor is connected to the non-inverting input terminal of the humidity comparator, the inverting input terminal is used to receive the reference humidity value, and the output terminal is connected to the logic gate module.

[0016] In an exemplary embodiment of the present disclosure, the fire warning system further includes: a flame sensor, a second switch, a first flame comparator, and a second flame comparator;

[0017] The second switch is a single-pole double-throw switch;

[0018] The fixed end of the second switch is connected to the flame sensor, the first movable end is connected to the non-inverting input end of the first flame comparator, the second movable end is connected to the non-inverting input end of the second flame comparator, and the control end is connected to the logic gate module;

[0019] The inverting input terminal of the first flame comparator is used to receive the first reference flame value, and the output terminal is connected to the central control module;

[0020] The inverting input terminal of the second flame comparator is used to receive the second reference flame value, and the output terminal is connected to the central control module;

[0021] The initial state of the second switch is connected to the first movable end.

[0022] In an exemplary embodiment of the present disclosure, the fire warning system further includes: a smoke sensor, a third switch, a first smoke comparator, and a second smoke comparator;

[0023] The third switch is a single-pole double-throw switch;

[0024] The third switch has a fixed terminal connected to the smoke sensor, a first movable terminal connected to the non-inverting input terminal of the first smoke comparator, a second movable terminal connected to the non-inverting input terminal of the smoke comparator, and a control terminal connected to the logic gate module;

[0025] The inverting input terminal of the first smoke comparator is used to receive the first reference smoke value, and the output terminal is connected to the central control module;

[0026] The inverting input terminal of the second smoke comparator is used to receive the second reference smoke value, and the output terminal is connected to the central control module;

[0027] The initial state of the third switch is connected to the first moving end.

[0028] In an exemplary embodiment of the present disclosure, an alarm module includes: a sound alarm unit and a light alarm unit;

[0029] The sound alarm unit and the light alarm unit are both connected to the central control module.

[0030] In an exemplary embodiment of the present disclosure, the fire warning system further includes: a personnel detection module;

[0031] The personnel detection module is connected to the central control module;

[0032] The person detection module is configured to detect whether there are person features in the target area, where the person features include body parts and voice information.

[0033] In an exemplary embodiment of the present disclosure, the fire warning system further includes: a display module;

[0034] The display module is connected to the personnel detection module;

[0035] The display module is configured to display the image information detected by the personnel detection module.

[0036] In an exemplary embodiment of the present disclosure, a display module includes: a first display unit and a second display unit;

[0037] The first display unit and the second display unit are both connected to the personnel detection module;

[0038] The first display unit is configured to display screen information in which the person detection module detects the presence of a person feature;

[0039] The second display unit is configured to display screen information in which the human detection module detects no human features.

[0040] The beneficial effects of the fire warning system provided by the embodiments of the present disclosure are:

[0041] The present disclosure automatically increases the sensitivity of temperature detection (by switching the first switch from the first temperature comparator to the second temperature comparator) when the outside temperature reaches a certain threshold (i.e., the reference temperature value). This intelligent switching mechanism ensures that even when the outside temperature is high and the fire risk increases, the system can detect potential fire risks more promptly and accurately. The present disclosure utilizes a two-stage temperature detection mechanism (a first temperature comparator and a second temperature comparator), wherein the second temperature comparator has a higher sensitivity. This dual safeguard mechanism improves the system's response speed and accuracy to fire risks, reduces the likelihood of missed and false alarms, and improves the accuracy and reliability of fire warnings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0043] Figure 1 This is a structural diagram of a fire warning system provided by an embodiment of the present disclosure;

[0044] Figure 2 It is a structural diagram of the second fire warning system provided by the embodiment of the present disclosure. DETAILED DESCRIPTION

[0045] To help those skilled in the art better understand this solution, the following will clearly describe the technical solutions in the embodiments of this solution in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of this solution, not all of it. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of this solution.

[0046] Throughout the specification, claims, and accompanying figures of this solution, the term "including" and any variations thereof mean "including, but not limited to," and are intended to cover non-exclusive inclusions and are not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish between different objects, not to describe a specific order.

[0047] The following describes the implementation of the present disclosure in detail with reference to the accompanying drawings:

[0048] Figure 1 This is a structural diagram of a fire warning system provided by an embodiment of the present disclosure. Figure 1 , the fire warning system includes: a first temperature sensor 10, a first temperature comparator 11, a logic gate module 12, a second temperature sensor 13, a first switch 14, a first temperature comparator 15, a second temperature comparator 16, a central control module 17 and an alarm module 18;

[0049] The first temperature comparator 11 has a non-inverting input terminal connected to the first temperature sensor 10, an inverting input terminal for receiving a reference temperature value, and an output terminal connected to the logic gate module 12;

[0050] The fixed end of the first switch 14 is connected to the second temperature sensor 13, the first movable end is connected to the non-inverting input end of the first temperature comparator 15, the second movable end is connected to the non-inverting input end of the second temperature comparator 16, and the control end is connected to the logic gate module 12;

[0051] The inverting input terminal of the first temperature comparator 15 is used to receive the first reference temperature value, and the output terminal is connected to the central control module 17;

[0052] The inverting input terminal of the second temperature comparator 16 is used to receive the second reference temperature value, and the output terminal is connected to the central control module 17;

[0053] The initial state of the first switch 14 is connected to the non-inverting input terminal of the first temperature comparator 15;

[0054] The central control module 17 is connected to the alarm module 18 .

[0055] In this embodiment, the first temperature sensor 10 is configured to detect the temperature value in real time and send it to the temperature comparator 11; the first switch 14 is a single-pole double-throw switch; the temperature comparator 11 receives the temperature value sent by the first temperature sensor 10, and compares it with a preset reference temperature value. If the above temperature value is greater than or equal to the preset reference temperature value, "1" is sent to the logic gate module 12; if the above temperature value is less than the preset reference temperature value, "0" is sent to the logic gate module 12; the reference temperature value can be manually set according to one's own needs and experience.

[0056] After receiving “1” sent by the temperature comparator 11 , the logic gate module 12 controls the first switch 14 to switch from the first active end state to the second active end state, that is, from being connected to the first temperature comparator 15 to being connected to the second temperature comparator 16 .

[0057] Considering that fires are more likely to occur and objects heat up faster when the outside temperature is relatively high, the fire warning system should be more sensitive to temperature detection in this case. Therefore, the first reference temperature value is greater than the second reference temperature value. The first reference temperature value and the second reference temperature value can be manually set according to one's own needs and experience.

[0058] The second temperature sensor 13 is configured to detect a temperature value of a target area and send the value to the first temperature comparator 15 or the second temperature comparator 16 through the first switch 14 . The target area is an area where fire needs to be detected.

[0059] The first temperature comparator 15 compares the received temperature value with the preset first reference temperature value, and sends "1" to the central control module 17 if the above temperature value is greater than or equal to the preset first reference temperature value; if the above temperature value is less than the preset first reference temperature value, it sends "0" to the central control module 17.

[0060] The second temperature comparator 16 compares the received temperature value with the preset second reference temperature value. If the above temperature value is greater than or equal to the preset second reference temperature value, it sends "1" to the central control module 17; if the above temperature value is less than the preset second reference temperature value, it sends "0" to the central control module 17.

[0061] The central control module 17 is configured to send an alarm signal to the alarm module 18 when receiving a "1" and to take no action when receiving a "0".

[0062] The alarm module 18 is configured to receive an alarm signal and generate an alarm.

[0063] For example, the reference temperature is 35°C, the first reference temperature is 60°C, the second reference temperature is 54°C, and the target area is area A. The first temperature sensor 10 detects an air temperature of 30°C and sends this value to the temperature comparator 11. The temperature comparator 11 compares this value with the reference temperature. Since 30°C is less than 35°C, the temperature comparator 11 sends a "0" to the logic gate module 12. The first switch 14 remains connected to the first active terminal and does not perform any switching action.

[0064] The second temperature sensor 13 detects that the highest temperature in area A is 56° C. Since 56° C. is less than 60° C., the first temperature comparator 15 sends “0” to the central control module 17 , and the central control module 17 does not send an alarm signal to the alarm module 18 .

[0065] Some time later, first temperature sensor 10 detects a temperature of 36°C and sends this value to temperature comparator 11. Comparator 11 compares this value with a reference temperature. Since 36°C is greater than 35°C, comparator 11 sends a "1" to logic gate module 12, which controls first switch 14 to connect to the second active terminal, i.e., second temperature comparator 16. At this point, the highest temperature in area A detected by second temperature sensor 13 is still 56°C. Since 56°C is greater than 54°C, second temperature comparator 16 sends a "1" to central control module 17, which in turn sends an alarm signal to alarm module 18. Upon receiving the alarm signal, alarm module 18 issues an alarm.

[0066] As can be seen from the above, the present disclosure can automatically increase the sensitivity of temperature detection (by switching the first switch 14 from the first temperature comparator 15 to the second temperature comparator 16) when the outside temperature reaches a certain threshold (i.e., the reference temperature value). This intelligent switching mechanism ensures that the system can detect potential fire risks more promptly and accurately even when the outside temperature is high and the fire risk increases. The present disclosure utilizes a two-stage temperature detection mechanism (the first temperature comparator 15 and the second temperature comparator 16), with the second stage (the second temperature comparator 16) having a higher sensitivity. This dual safeguard mechanism improves the system's response speed and accuracy to fire risks, reduces the possibility of missed and false alarms, and improves the accuracy and reliability of fire warnings.

[0067] In one embodiment of the present disclosure, the fire warning system further includes: a wind speed sensor 19 and a wind speed comparator 20;

[0068] The wind speed sensor 19 is connected to the non-inverting input terminal of the wind speed comparator 20 , the inverting input terminal is used to receive a reference wind speed value, and the output terminal is connected to the logic gate module 12 .

[0069] In one embodiment of the present disclosure, the fire warning system further includes: a flame sensor, a second switch 24, a first flame comparator 25, and a second flame comparator 26;

[0070] The second switch 24 is a single-pole double-throw switch;

[0071] The fixed end of the second switch 24 is connected to the flame sensor 23, the first movable end is connected to the non-inverting input end of the first flame comparator 25, the second movable end is connected to the non-inverting input end of the second flame comparator 26, and the control end is connected to the logic gate module 12;

[0072] The inverting input terminal of the first flame comparator 25 is used to receive the first reference flame value, and the output terminal is connected to the central control module 17;

[0073] The inverting input terminal of the second flame comparator 26 is used to receive the second reference flame value, and the output terminal is connected to the central control module 17;

[0074] The initial state of the second switch 24 is to be connected to the non-inverting input terminal of the first flame comparator 25 .

[0075] In this embodiment, the wind speed sensor 19 is configured to detect the wind speed value in real time and send it to the wind speed comparator 20; the wind speed comparator 20 receives the wind speed value sent by the wind speed sensor 19 and compares it with a preset reference wind speed value. If the above wind speed value is greater than or equal to the preset reference wind speed value, "1" is sent to the logic gate module 12; if the above wind speed value is less than the preset reference wind speed value, "0" is sent to the logic gate module 12; the reference wind speed value can be manually set according to one's own needs and experience.

[0076] After receiving “1” sent by the wind speed comparator 20 , the logic gate module 12 controls the second switch 24 to switch from the first movable end state to the second movable end state, that is, from being connected to the first flame comparator 25 to being connected to the second flame comparator 26 .

[0077] Taking into account that when the external wind speed is relatively high, even a small flame may quickly grow larger and cause a fire. In this case, the fire warning system should be more sensitive to flame detection. Therefore, the first reference flame value is greater than the second reference flame value. The first reference flame value and the second reference flame value can be manually set according to one's own needs and experience.

[0078] The flame sensor 23 is configured to detect an infrared radiation value of a target area and send the value to the first flame comparator 25 or the second flame comparator 26 through the second switch 24 . The target area is an area where fire needs to be detected.

[0079] The first flame comparator 25 compares the received infrared radiation value with the preset first reference flame value. If the above-mentioned infrared radiation value is greater than or equal to the preset first reference flame value, it sends "1" to the central control module 17; if the above-mentioned infrared radiation value is less than the preset first reference flame value, it sends "0" to the central control module 17.

[0080] The second flame comparator 26 compares the received infrared radiation value with the preset second reference flame value. If the above-mentioned infrared radiation value is greater than or equal to the preset second reference flame value, it sends "1" to the central control module 17; if the above-mentioned infrared radiation value is less than the preset second reference flame value, it sends "0" to the central control module 17.

[0081] The central control module 17 is configured to send an alarm signal to the alarm module 18 when receiving a "1" and to take no action when receiving a "0".

[0082] The alarm module 18 is configured to receive an alarm signal and generate an alarm.

[0083] For example, the reference wind speed is 5 m / s, the first reference flame value is 60 mW / cm2, the second reference flame value is 50 mW / cm2, and the target area is area B. The first wind speed sensor 19 detects a wind speed of 3 m / s and sends it to the wind speed comparator 20. The wind speed comparator 20 compares it with the reference air temperature. Since 3 m / s is less than 5 m / s, the wind speed comparator 20 sends a "0" to the logic gate module 12. The second switch 24 remains connected to the first active terminal and does not perform any switching action.

[0084] The flame sensor 23 detects an infrared radiation value of 55 milliwatts per square centimeter in area B. Since 55 milliwatts per square centimeter is less than 60 milliwatts per square centimeter, the first wind speed comparator 20 sends a "0" to the central control module 17, and the central control module 17 does not send an alarm signal to the alarm module 18.

[0085] After a while, first wind speed sensor 19 detects a wind speed of 5.5 m / s and sends this value to wind speed comparator 20. Wind speed comparator 20 compares this value with the reference wind speed value. Since 5.5 m / s is greater than 5 m / s, wind speed comparator 20 sends a "1" to logic gate module 12, which controls second switch 24 to connect to the second active terminal, that is, to second flame comparator 26. At this time, the infrared radiation value in detection area B by flame sensor 23 is still 55 mW / cm2. Since 55 mW / cm2 is greater than 50 mW / cm2, second flame comparator 26 sends a "1" to central control module 17, which sends an alarm signal to alarm module 18. Alarm module 18 then issues an alarm.

[0086] As can be seen from the above, the present disclosure, through the wind speed sensor 19 and wind speed comparator 20, is capable of real-time detection of ambient wind speed and dynamic adjustment of the flame detection threshold based on wind speed conditions. In high wind speed environments, the system can detect situations where a small fire could rapidly spread into a large fire earlier, thereby improving the sensitivity and timeliness of early warnings. By setting different reference flame values ​​(the first reference flame value is greater than the second reference flame value), the present disclosure enables the system to adopt different detection standards under different wind speed conditions. In low wind speed environments, using a higher reference flame value can reduce false alarms; in high wind speed environments, using a lower reference flame value can ensure timely detection of fires, effectively reducing the possibility of false alarms and missed alarms, and improving the accuracy and reliability of the fire warning system.

[0087] In one embodiment of the present disclosure, the fire warning system further includes: a humidity sensor 21 and a humidity comparator 22;

[0088] The humidity sensor 21 is connected to the non-inverting input terminal of the humidity comparator 22 , the inverting input terminal is used to receive a reference humidity value, and the output terminal is connected to the logic gate module 12 .

[0089] In one embodiment of the present disclosure, the fire warning system further includes: a smoke sensor 27, a third switch 28, a first smoke comparator 29, and a second smoke comparator 30;

[0090] The third switch 28 is a single-pole double-throw switch;

[0091] The third switch 28 has a fixed terminal connected to the smoke sensor 27, a first movable terminal connected to the non-inverting input terminal of the first smoke comparator 29, a second movable terminal connected to the non-inverting input terminal of the second smoke comparator 30, and a control terminal connected to the logic gate module 12;

[0092] The inverting input terminal of the first smoke comparator 29 is used to receive the first reference smoke value, and the output terminal is connected to the central control module 17;

[0093] The inverting input terminal of the second smoke comparator 30 is used to receive the second reference smoke value, and the output terminal is connected to the central control module 17;

[0094] The initial state of the third switch 28 is connected to the non-inverting input terminal of the first smoke comparator 29 .

[0095] In this embodiment, the humidity sensor 21 is configured to detect the humidity value in real time and send it to the humidity comparator 22; the humidity comparator 22 receives the humidity value sent by the humidity sensor 21 and compares it with a preset reference humidity value. If the above humidity value is less than or equal to the preset reference humidity value, "1" is sent to the logic gate module 12; if the above humidity value is greater than the preset reference humidity value, "0" is sent to the logic gate module 12; the reference humidity value can be manually set according to one's own needs and experience.

[0096] After receiving “1” sent by the humidity comparator 22 , the logic gate module 12 controls the third switch 28 to switch from the first active end state to the second active end state, that is, from being connected to the first smoke comparator 29 to being connected to the second smoke comparator 30 .

[0097] Taking into account that when the external humidity is relatively low, even the smoke caused by a small flame may spread rapidly and cause a fire. In this case, the fire warning system should be more sensitive to smoke detection. Therefore, the first reference smoke value is greater than the second reference smoke value. The first reference smoke value and the second reference smoke value can both be set manually according to one's own needs and experience.

[0098] The smoke sensor 27 is configured to detect a smoke value of a target area and send the value to the first smoke comparator 29 or the second smoke comparator 30 through the third switch 28 . The target area is an area where fire needs to be detected.

[0099] The first smoke comparator 29 compares the received smoke value with the preset first reference smoke value. If the above-mentioned infrared radiation value is greater than or equal to the preset first reference smoke value, it sends "1" to the central control module 17; if the above-mentioned infrared radiation value is less than the preset first reference smoke value, it sends "0" to the central control module 17.

[0100] The second smoke comparator 30 compares the received smoke value with a preset second reference smoke value. If the above-mentioned infrared radiation value is greater than or equal to the preset second reference smoke value, it sends "1" to the central control module 17; if the above-mentioned infrared radiation value is less than the preset second reference smoke value, it sends "0" to the central control module 17.

[0101] The central control module 17 is configured to send an alarm signal to the alarm module 18 when receiving a "1" and to take no action when receiving a "0".

[0102] The alarm module 18 is configured to receive an alarm signal and generate an alarm.

[0103] As can be seen from the above, through the combination of humidity sensor 21 and humidity comparator 22, the system can detect ambient humidity in real time and dynamically adjust smoke detection sensitivity based on humidity conditions. In low-humidity environments, the system switches to a higher smoke detection sensitivity (i.e., a lower reference smoke value) to detect the small amount of smoke that may be generated in the early stages of a fire earlier, thereby effectively shortening the fire warning response time. The present disclosure uses a single-pole double-throw switch and logic gate module 12 to control the flow of smoke signals to different smoke comparators based on humidity conditions. This design enables the system to automatically adjust detection strategies based on different environments (such as humidity differences in different seasons and locations) without the need for human intervention, enhancing the adaptability and flexibility of the present disclosure and improving the accuracy and reliability of the fire warning system.

[0104] In one embodiment of the present disclosure, the alarm module 18 includes: a sound alarm unit 181 and a light alarm unit 182;

[0105] The sound alarm unit 181 and the light alarm unit 182 are both connected to the central control module 17 .

[0106] In one embodiment of the present disclosure, the fire warning system further includes: a personnel detection module 31;

[0107] The personnel detection module 31 is connected to the central control module 17;

[0108] The person detection module 31 is configured to detect whether there are person features in the target area, where the person features include body parts and voice information of the person.

[0109] In one embodiment of the present disclosure, the fire warning system further includes: a display module 32;

[0110] The display module 32 is connected to the personnel detection module 31;

[0111] The display module 32 is configured to display the screen information detected by the person detection module 31 .

[0112] In one embodiment of the present disclosure, the display module 32 includes: a first display unit 321 and a second display unit 322;

[0113] The first display unit 321 and the second display unit 322 are both connected to the personnel detection module 31;

[0114] The first display unit 321 is configured to display the screen information of the presence of human features detected by the human detection module 31;

[0115] The second display unit 322 is configured to display screen information in which the person detection module 31 does not detect the presence of a person feature.

[0116] In this embodiment, the central control module 17 is configured to control the light alarm unit 182 to issue a light alarm when receiving "001", and to control the light alarm unit 182 and the sound alarm unit 181 to issue an alarm when receiving "011" or "111".

[0117] Taking into account that when a fire occurs, there is a lot of smoke and the personnel detection module 31 may not be able to detect the entire person, so the personnel detection module 31 detects whether there are body parts or voice information of a person in the area. When body parts or voice information of a person appear in the area, the picture of the area is displayed on the first display unit 321 to facilitate rescue personnel to quickly locate the position information of the trapped person. The picture of the area where no personnel feature information appears is displayed on the second display unit 322. During this process, the image information detected by the personnel detection module 31 is sent to the built-in memory card of the central control module 17 for storage.

[0118] For example, the central control module 17 receives "1" sent by the first temperature comparator 15, "1" sent by the second smoke comparator 30 and "1" sent by the second flame comparator 26, that is, receives "111". At this time, the central control module 17 controls the alarm module 18 to perform light alarm and sound alarm.

[0119] The personnel detection module 31 detects that an arm appears in area C, and no personnel feature information appears in area D, so the personnel detection module 31 displays the image of area C on the first display unit 321 and displays the image of area D on the second display unit 322, so that rescue personnel can quickly locate the position information of the trapped person.

[0120] As can be seen from the above, the present disclosure implements a hierarchical alarm system through the audio alarm unit 181 and the light alarm unit 182. This system also enables the system to simultaneously issue alarms through multiple sensory modalities (auditory and visual) when a fire or other emergency is detected. The present disclosure utilizes the personnel detection module 31 to enable real-time detection of the characteristics of people within the target area. By displaying this detected characteristic information on the display module 32, the location of trapped people can be intuitively displayed, providing strong support for rescue operations and improving the accuracy and reliability of the fire warning system.

[0121] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

Claims

1. A fire warning system, characterized in that: include: A first temperature sensor, a first temperature comparator, a logic gate module, a second temperature sensor, a first switch, a first temperature comparator, a second temperature comparator, a central control module, and an alarm module; The non-inverting input terminal of the first temperature comparator is connected to the first temperature sensor, the inverting input terminal is used to receive the reference temperature value, and the output terminal is connected to the logic gate module; The fixed end of the first switch is connected to the second temperature sensor, the first movable end is connected to the non-inverting input end of the first temperature comparator, the second movable end is connected to the non-inverting input end of the second temperature comparator, and the control end is connected to the logic gate module; The inverting input terminal of the first temperature comparator is used to receive the first reference temperature value, and the output terminal is connected to the central control module; The inverting input terminal of the second temperature comparator is used to receive the second reference temperature value, and the output terminal is connected to the central control module; The initial state of the first switch is connected to the non-inverting input terminal of the first temperature comparator; The central control module is connected to the alarm module.

2. The fire warning system according to claim 1, characterized in that: Also includes: Wind speed sensor and wind speed comparator; The wind speed sensor is connected to the non-inverting input terminal of the wind speed comparator, the inverting input terminal is used to receive a reference wind speed value, and the output terminal is connected to the logic gate module.

3. The fire warning system according to claim 1, characterized in that: Also includes: Humidity sensor and humidity comparator; The humidity sensor is connected to the non-inverting input terminal of the humidity comparator, the inverting input terminal is used to receive a reference humidity value, and the output terminal is connected to the logic gate module.

4. The fire warning system according to claim 1, characterized in that: Also includes: a flame sensor, a second switch, a first flame comparator, and a second flame comparator; The second switch is a single-pole double-throw switch; The fixed end of the second switch is connected to the flame sensor, the first movable end is connected to the non-inverting input end of the first flame comparator, the second movable end is connected to the non-inverting input end of the second flame comparator, and the control end is connected to the logic gate module; The inverting input terminal of the first flame comparator is used to receive the first reference flame value, and the output terminal is connected to the central control module; The inverting input terminal of the second flame comparator is used to receive the second reference flame value, and the output terminal is connected to the central control module; The initial state of the second switch is to be connected to the non-inverting input terminal of the first flame comparator.

5. The fire warning system according to claim 1, characterized in that: Also includes: Smoke a sensor, a third switch, a first smoke comparator, and a second smoke comparator; The third switch is a single-pole double-throw switch; The fixed end of the third switch is connected to the smoke sensor, the first movable end is connected to the non-inverting input end of the first smoke comparator, the second movable end is connected to the non-inverting input end of the smoke comparator, and the control end is connected to the logic gate module; The inverting input terminal of the first smoke comparator is used to receive the first reference smoke value, and the output terminal is connected to the central control module; The inverting input terminal of the second smoke comparator is used to receive the second reference smoke value, and the output terminal is connected to the central control module; The initial state of the third switch is connected to the non-inverting input terminal of the first smoke comparator.

6. The fire warning system according to claim 1, characterized in that: The alarm module includes: a sound alarm unit and a light alarm unit; The sound alarm unit and the light alarm unit are both connected to the central control module.

7. The fire warning system according to claim 1, characterized in that: Also includes: personnel detection module; The personnel detection module is connected to the central control module; The personnel detection module is configured to detect whether there are personnel features in the target area, where the personnel features include body parts and voice information of the personnel.

8. The fire warning system according to claim 7, characterized in that: Also includes: Display module; The display module is connected to the personnel detection module; The display module is configured to display the image information detected by the personnel detection module.

9. The fire warning system according to claim 8, characterized in that: The display module includes: a first display unit and a second display unit; The first display unit and the second display unit are both connected to the personnel detection module; The first display unit is configured to display screen information in which the person detection module detects the presence of the person feature; The second display unit is configured to display screen information in which the person detection module does not detect the presence of the person feature.

Images