Fire emergency alarm system in building
By designing a fire emergency alarm system in the building that integrates warning lights, location recording, infrared sensors and distance calculation modules, the problem of traditional systems being difficult to detect fire sources and guide personnel in a timely manner, achieving the effect of rapid escape and rescue.
Patent Information
- Application Number
- CN202411963215.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-05-02
AI Technical Summary
It is difficult to detect fire sources in a timely manner, guide escape routes and guide fire rescue personnel to quickly reach the fire source area.
A fire emergency alarm system in building including a warning light alarm module, a position recording module, an infrared sensor, a distance calculation module and a lamp source scheduling control module is designed. The system senses the fire source through infrared sensors, and the distance from the calculation module calculates the distance between the warning light and the fire source. The lamp source scheduling control module generates a light source control signal with a flashing frequency from fast to slow, guiding the escape and guiding firefighters.
It has achieved timely discovery of fire sources, clarification of the location of the fire sources, and guided escapers to quickly stay away from the fire sources, and guided firefighters to quickly reach the fire source area, improving fire response efficiency and safety.
Smart Images
Figure CN119920054A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an emergency alarm system, in particular to a fire emergency alarm system in a building. Background Art
[0002] Traditional alarm warning systems are generally composed of indicator lights and infrared sensors with fire source sensing functions. Each component only plays a single role and is independently controlled and responded by its own control system. When a fire occurs, each component works independently. When people escape, it is difficult to quickly find the correct escape route away from the fire point in a panic. The passage is often filled with a lot of smoke and visibility is low. Even if there is an escape direction indicator, it is difficult to see clearly and it is unclear whether you have moved away from the fire source area. At the same time, when firefighters are rescuing, if the fire point cannot be seen directly from the outside, they need to spend precious rescue time to check each room in the building to find the fire source and extinguish it, which will cause the fire to continue to grow, causing more serious losses and bringing danger to rescuers. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a fire emergency alarm system in a building that can promptly detect the fire source, effectively indicate the location of the fire source, and effectively guide people to quickly escape from the fire source. At the same time, it can also guide fire rescue personnel to quickly reach the area where the fire source is located, extinguish the fire in time, or rescue trapped people.
[0004] The technical solution adopted by the present invention to solve the above technical problems is: a fire emergency alarm system in a building, comprising a warning light alarm module, a position recording module, a plurality of infrared sensors with a fire source sensing function, a distance calculation module and a light source scheduling control module, wherein the warning light alarm module comprises a plurality of warning lights arranged at each channel of each floor in the building according to set positions, and a plurality of infrared sensors are arranged at each room and channel in the building according to set positions, and the position recording module records the first position information of each warning light and the second position information of each infrared sensor, and the infrared sensor is used to send warning information to the distance calculation module when sensing the presence of a fire source, and the distance calculation module is used to read the first position information and the second position information in the position recording module after receiving the warning information, and calculate the light source distance from each warning light to the infrared sensor, and then send all the calculated light source distances to the light source scheduling control module, and the light source scheduling control module is used to generate light source control signals with flashing frequencies from fast to slow to the warning light in sequence according to the light source distance from near to far, and the warning light flashes at the corresponding flashing frequency according to the received light source control signal to warn.
[0005] Compared with the prior art, the advantage of the present invention is that the distance calculation module calculates the light source distance of each warning light to the infrared sensor, and then sends all the calculated light source distances to the light source scheduling control module. The light source scheduling control module generates light source control signals with flashing frequencies from fast to slow according to the light source distance from near to far in turn to the warning light. The warning light flashes at the corresponding flashing frequency according to the received light source control signal, and the overall effect is as follows: the warning light closer to the fire source flashes faster, and the warning light farther away from the fire source flashes slower. Therefore, on the one hand, it can guide the escapees to escape in the direction of the path where the warning lights with gradually slower flashing frequencies are located, and on the other hand, it can guide the firefighters to go back along the path with flashing frequencies from slow to fast, quickly reach the area where the fire source is located, and promptly extinguish the fire or rescue the trapped persons according to the situation; among them, the warning light flashes and emits light, which is easier to play an obvious prompting role.
[0006] Preferably, the location recording module establishes a virtual Cartesian coordinate system for the same floor in the building, sets the zero point of the virtual Cartesian coordinate system, and then records the first location information and the second location information in the form of coordinate points in the virtual Cartesian coordinate system. When a fire occurs, the distance calculation module only needs to use the vector distance between the coordinates corresponding to each device to determine the distance and direction of each warning light to the fire source.
[0007] Preferably, it also includes a sound guidance module, the sound guidance module includes multiple alarm speakers and a broadcast control module, the position recording module records the third position information of each alarm speaker and the fourth position information of the safety exit, the distance calculation module is used to read the third position information and the fourth position information in the position recording module after receiving the warning information, and calculate the safety distance from each alarm speaker to the safety exit, and then send all the calculated safety distances to the broadcast control module, the broadcast control module sends each safety distance to the corresponding alarm speaker, and the alarm speaker broadcasts the received safety distance in the form of sound. The alarm speaker broadcasts the distance from the safety area in turn, and the broadcast control module controls the order of broadcasting of each alarm speaker to achieve non-interference, and the escapee quickly escapes from the fire scene from the safety exit with the joint guidance of sound and light; when the fire continues to expand and the broadcast control module is disconnected from each alarm speaker, the alarm speaker can still broadcast in turn according to the interval period issued.
[0008] Specifically, the warning light has a safety exit indicating arrow mark, which is convenient for guiding the escape route and enables the escapee to quickly reach the safety exit.
[0009] Preferably, the warning light includes at least four light boards and a light board control module arranged in a front-to-back direction, the distance calculation module is further used to obtain the direction information of each warning light to the infrared sensor according to the first position information and the second position information and send it to the light source scheduling control module, the light source scheduling control module sends the light source control signal and the direction information to the light board control module, the light board control module is used to control the light boards to work at maximum brightness in a sequence from back to front corresponding to the direction information according to the received direction information, and the duration increases in sequence from back to front, when one of the light boards works at maximum brightness, the remaining light boards in the same warning light work at a preset second brightness lower than the maximum brightness, when the last light board works at maximum brightness for a set duration, all light boards in the same warning light are extinguished or work at the second brightness, completing a cycle of lighting process, and the cycle frequency of the lighting process is the flashing frequency contained in the light source control signal received by the light board control module. By splitting a warning light into at least four light panels that light up to maximum brightness in sequence according to direction information, and the light panel closest to the fire source in the same warning light corresponds to the front end in the direction information, and its maximum lighting time lasts the longest, while the light panel farthest from the fire source is at the back, and its maximum lighting time lasts the shortest. Therefore, the overall visual directionality of the warning light is more obvious, so that escaping personnel can quickly escape in the direction of the light from front to back, and at the same time, firefighters quickly approach the fire source area from back to front for rescue. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the planar structure of the first embodiment; Figure 2 is a schematic diagram of a virtual Cartesian coordinate system in Example 1; Figure 3 It is a structural schematic diagram of Embodiment 2; Figure 4 This is a block diagram of the working principle of the second embodiment; Figure 5 It is a partial device information record table stored in the location record module in the second embodiment; Figure 6 This is a schematic diagram of the structure of the warning light in Example 3.
[0011] Description of reference numerals: 11. Position recording module; 12. Distance calculation module; 13. Light source scheduling control module; 2. Infrared sensor; 3. Warning light; 41. Alarm horn; 42. Broadcast control module; 51. Light board; 52. Light board control module. DETAILED DESCRIPTION
[0012] The present invention is further described in detail below with reference to the accompanying drawings.
[0013] Embodiment 1: Figure 1~Figure 3 As shown, a fire emergency alarm system in a building includes a warning light alarm module, a position recording module 11, a plurality of infrared sensors 2 with a fire source sensing function, a distance calculation module 12 and a light source scheduling control module 13. The warning light alarm module includes a plurality of warning lights 3 arranged at set positions at each channel on each floor of the building, and a plurality of infrared sensors 2 are arranged at set positions in each room and channel in the building. The position recording module 11 records the first position information of each warning light 3 and the second position information of each infrared sensor 2. In the position recording module 11, a virtual Cartesian coordinate system is established for the same plane floor in the building, and the zero point of the virtual Cartesian coordinate system is set, and then the first position information and the second position information are respectively recorded in the virtual Cartesian coordinate system in the form of coordinate points; the distance calculation module 12 only needs to determine the distance and direction of each warning light 3 to the fire source through the vector distance between the coordinates corresponding to each device.
[0014] The infrared sensor 2 is used to send a warning message to the distance calculation module 12 when sensing the presence of a fire source. The distance calculation module 12 is used to read the first position information and the second position information in the position recording module 11 after receiving the warning message, and calculate the light source distance of each warning light 3 to the infrared sensor 2, and then send all the calculated light source distances to the light source scheduling control module 13. The light source scheduling control module 13 is used to generate a light source control signal with a flashing frequency from fast to slow to the warning light 3 in sequence according to the light source distance from near to far. The warning light 3 flashes at a corresponding flashing frequency according to the received light source control signal to warn, wherein the warning light 3 is marked with a safe exit indicating arrow.
[0015] Embodiment 2: Figure 4 , Figure 5As shown, the rest is the same as the first embodiment, except that it also includes a sound guidance module, which includes multiple alarm speakers 41 and a broadcast control module 42. The position recording module 11 records the third position information of each alarm speaker 41 and the fourth position information of the safety exit. The distance calculation module 12 is used to read the third position information and the fourth position information in the position recording module 11 after receiving the warning information, and calculate the safety distance from each alarm speaker 41 to the safety exit, and then send all the calculated safety distances to the broadcast control module 42. The broadcast control module 42 sends each safety distance to the corresponding alarm speaker 41, and the alarm speaker 41 broadcasts the received safety distance in the form of sound. When the fire continues to expand and the broadcast control module 42 is disconnected from each alarm speaker 41, the alarm speaker 41 can still broadcast in sequence according to the interval period issued.
[0016] Embodiment 3: Figure 6 As shown, the rest is the same as the first embodiment, the difference is that the warning light 3 includes four light boards 51 arranged in the front-to-back direction and a light board control module 52, the distance calculation module 12 is also used to obtain the direction information of each warning light 3 to the infrared sensor 2 according to the first position information and the second position information and send it to the light source scheduling control module 13, the light source scheduling control module 13 sends the light source control signal and the direction information to the light board control module 52, the light board control module 52 is used to control the light boards 51 to work at the maximum brightness in a sequence from back to front corresponding to the direction information according to the received direction information, and the duration increases in sequence from back to front. When a light board 51 works at the maximum brightness, the remaining light boards 51 in the same warning light 3 work at a preset second brightness lower than the maximum brightness. When the last light board 51 works at the maximum brightness for a set duration, all the light boards 51 in the same warning light 3 are extinguished or work at the second brightness, completing a cycle of lighting process, and the cycle frequency of the lighting process is the flashing frequency contained in the light source control signal received by the light board control module 52. The number of light panels 51 is generally four or more to enhance the visibility of the light prompt signal; the second brightness is set to 60% to 80% of the maximum brightness as required.
[0017] The specific flashing control method of the four light boards of the warning light 3 in the third embodiment is exemplified as follows, wherein the four light boards are defined as the fourth light board, the third light board, the second light board and the first light board in order from back to front.
[0018] Example: Step 1: The fourth light panel maintains 100% brightness for 0.2 seconds, and the remaining light panels maintain 80% of the maximum brightness; Step 2: The third light panel maintains 100% brightness for 0.4 seconds, and the remaining light panels maintain 80% of the maximum brightness; Step 3: The second light panel maintains 100% brightness for 0.6 seconds, and the remaining light panels maintain 80% of the maximum brightness; Step 4: The first light panel maintains 100% brightness for 0.8 seconds, and the remaining light panels maintain 80% of the maximum brightness; Step 5: Repeat the process from step 1 to step 4 to light up each light panel in turn.
[0019] In actual results, compared with the past, the prompt effect is more eye-catching and the direction pointing effect is more obvious. Simulation tests were conducted by multiple people under low illumination, and the average reaction time was improved by 20% compared with the past.
Claims
1. A fire emergency alarm system in a building, characterized in that The invention comprises a warning light alarm module, a position recording module, a plurality of infrared sensors with a fire source sensing function, a distance calculation module and a light source scheduling control module. The warning light alarm module comprises a plurality of warning lights arranged at set positions at each channel on each floor of a building. The plurality of infrared sensors are arranged at set positions in each room and channel of the building. The position recording module records the first position information of each warning light and the second position information of each infrared sensor. The infrared sensor is used to send warning information to the distance calculation module when sensing the presence of a fire source. The distance calculation module is used to read the first position information and the second position information in the position recording module after receiving the warning information, and calculate the light source distance from each warning light to the infrared sensor, and then send all the calculated light source distances to the light source scheduling control module. The light source scheduling control module is used to generate light source control signals with flashing frequencies from fast to slow to the warning light in sequence according to the light source distance from near to far. The warning light flashes at the corresponding flashing frequency according to the received light source control signal to give a warning.
2. A building fire emergency alarm system according to claim 1, characterized in that In the position recording module, a virtual Cartesian coordinate system is established for the same plane floor in the building, and a zero point of the virtual Cartesian coordinate system is set, and then the first position information and the second position information are respectively recorded in the virtual Cartesian coordinate system in the form of coordinate points.
3. A building fire emergency alarm system according to claim 1, characterized in that It also includes a sound guidance module, which includes multiple alarm speakers and a broadcast control module. The position recording module records the third position information of each alarm speaker and the fourth position information of the safety exit. The distance calculation module is used to read the third position information and the fourth position information in the position recording module after receiving the warning information, and calculate the safety distance from each alarm speaker to the safety exit, and then send all calculated safety distances to the broadcast control module. The broadcast control module sends each safety distance to the corresponding alarm speaker, and the alarm speaker broadcasts the received safety distance in the form of sound.
4. A building fire emergency alarm system according to claim 1, characterized in that The warning light is provided with a safety exit indicating arrow mark.
5. A building fire emergency alarm system according to claim 1, characterized in that The warning light includes at least four light boards and a light board control module arranged in a front-to-back direction. The distance calculation module is also used to obtain the direction information of each warning light to the infrared sensor according to the first position information and the second position information and send it to the light source scheduling control module. The light source scheduling control module sends the light source control signal and the direction information to the light board control module. The light board control module is used to control the light boards to work at maximum brightness in a sequence from back to front corresponding to the direction information according to the received direction information, and the duration increases in sequence from back to front. When one of the light boards works at maximum brightness, the remaining light boards in the same warning light work at a preset second brightness lower than the maximum brightness. When the last light board works at maximum brightness for a set duration, all light boards in the same warning light are extinguished or work at the second brightness, completing a cycle of lighting process. The cycle frequency of the lighting process is the flashing frequency contained in the light source control signal received by the light board control module.