Intelligent fire early warning system
Data is collected by heat flow detection circuit and smoke detection circuit, and the signals are processed by voltage comparison circuit and delay trigger circuit to trigger the buzzer alarm. This solves the problem of existing fire early warning systems relying on processors and realizes accurate early warning without processors.
Patent Information
- Application Number
- CN202422896857.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing fire early warning systems rely on intelligent algorithms and processors for data analysis, which increases the probability of system failure and makes it impossible to provide accurate early warnings without network connectivity.
It employs a heat flow detection circuit, a temperature detection circuit, and a smoke detection circuit. Data is collected through heat flow sensors, temperature sensors, and smoke sensors. Signal processing is performed using a voltage comparison circuit and a delay trigger circuit. The control circuit triggers a buzzer alarm, achieving accurate fire early warning without a processor.
It enables accurate early warning of fires without a processor, reducing the risk of system damage.
Smart Images
Figure CN223624657U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire early warning technology, and in particular to an intelligent fire early warning system. Background Technology
[0002] A fire early warning system is a system that utilizes advanced sensor technology and data analysis methods to monitor and assess potential fire risks in real time. It collects environmental data through various sensors installed in buildings or specific areas, such as smoke detectors, temperature sensors, and infrared cameras. This data is transmitted to a central processing unit, where it is analyzed by intelligent algorithms to identify possible signs of fire. Once an anomaly is detected, the system immediately issues an alarm, notifying relevant personnel to take action, thereby intervening before or in the early stages of a fire and effectively reducing the losses caused by the fire. Fire early warning systems are of great significance for improving public safety and protecting life and property.
[0003] However, current fire early warning systems require the use of intelligent algorithms for collaborative analysis. This necessitates that the fire early warning system be able to perform data connection, data transmission, and data processing. These actions require the fire early warning system to be connected to the network or connected locally. However, the act of connecting to the network increases the probability of damage to the entire fire early warning system. Therefore, the fire early warning system needs to be able to make relatively accurate warnings without the aid of a processor.
[0004] Therefore, an intelligent fire early warning system is proposed to solve or alleviate the above problems. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an intelligent fire early warning system.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An intelligent fire early warning system, including
[0008] A heat flow detection circuit is used to collect ambient hot air and output a signal after a certain period of time;
[0009] A temperature detection circuit, which starts working in response to the signal output by the heat flow detection circuit and collects the ambient temperature and then feeds back the signal.
[0010] A smoke detection circuit, which starts working in response to the signal output by the heat flow detection circuit and collects the ambient smoke concentration before feeding back the signal.
[0011] A buzzer, used for alarm purposes;
[0012] The control circuit controls the buzzer to operate in response to signals fed back from the heat flow detection circuit, the temperature detection circuit, and the smoke detection circuit.
[0013] Preferably, the heat flow detection circuit includes
[0014] A heat flow sensor, which is used to collect ambient hot air and feed back a heat flow signal;
[0015] A voltage comparison circuit, wherein the input terminal of the voltage comparison circuit is coupled to the output terminal of the heat flow sensor, and the voltage comparison circuit outputs a first comparison signal in response to the heat flow signal being greater than the heat flow reference signal;
[0016] A delayed trigger circuit, wherein the input terminal of the delayed trigger circuit is coupled to the output terminal of the voltage comparison circuit, and the delayed trigger circuit starts timing in response to the first comparison signal and outputs a trigger signal after the timing period ends;
[0017] A timing circuit, wherein the input terminal of the timing circuit is coupled to the output terminal of the delay trigger circuit, and the timing circuit starts timing in response to the trigger signal and outputs a timing signal within the timing time.
[0018] The first switching circuit has its input terminal coupled to the output terminal of the timing circuit. The first switching circuit controls the circuit in which it is located to conduct after responding to the timing signal.
[0019] Preferably, the temperature detection circuit includes
[0020] A temperature sensor, which is used to collect ambient temperature and feed back a temperature signal;
[0021] A temperature comparison circuit, wherein the input terminal of the temperature comparison circuit is coupled to the output terminal of the temperature sensor, and the temperature comparison circuit feeds back a second comparison signal in response to the temperature signal being greater than a preset temperature reference signal.
[0022] Preferably, the smoke detection circuit includes
[0023] A smoke sensor is used to collect ambient smoke concentration and feed back a smoke signal;
[0024] A smoke comparison circuit, wherein the input terminal of the smoke comparison circuit is coupled to the output terminal of the smoke sensor, and the smoke comparison circuit feeds back a third comparison signal in response to the smoke signal being greater than a preset smoke reference signal.
[0025] Preferably, the control circuit includes
[0026] The first judgment circuit has its input terminal coupled to the output terminals of the temperature detection circuit and the smoke detection circuit. The first judgment circuit responds to the temperature detection circuit and the smoke detection circuit simultaneously and then feeds back a first judgment signal.
[0027] The second judgment circuit has its input terminal coupled to the output terminals of the heat flow detection circuit and the first judgment circuit. The second judgment circuit responds to the heat flow detection circuit and the first judgment circuit simultaneously and then feeds back a second judgment signal.
[0028] The second switching circuit has its input terminal coupled to the output terminal of the second judgment circuit. The second switching circuit controls the buzzer to turn on after responding to the second judgment signal.
[0029] Preferably, the voltage comparison circuit includes a voltage comparator, the delay trigger circuit includes an RC delay circuit, the timing circuit includes a minimum system based on a 555 timer chip, and the first switching circuit includes a transistor switch.
[0030] Preferably, the temperature comparison circuit includes a voltage comparator.
[0031] Preferably, the smoke comparison circuit includes a voltage comparator.
[0032] Preferably, both the first and second judgment circuits include AND gate circuits, and the second switching circuit includes a transistor switch.
[0033] This utility model has the following beneficial effects:
[0034] This invention uses a heat flow detection circuit to sense initial hot air, activates temperature and smoke detection circuits, collects data and feeds it back to the control circuit. The control circuit responds to these signals and triggers a buzzer alarm, thus achieving accurate fire early warning without a processor. Attached Figure Description
[0035] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0036] Figure 1 This is a structural block diagram of the present invention;
[0037] Figure 2 This is the wiring diagram for this utility model.
[0038] 1. Heat flow sensor; 2. Voltage comparison circuit; 3. Delay trigger circuit; 4. Timing circuit; 5. First switch circuit; 6. Temperature sensor; 7. Temperature comparison circuit; 8. Smoke sensor; 9. Smoke comparison circuit; 10. First judgment circuit; 11. Second judgment circuit; 12. Second switch circuit; 13. Buzzer. Detailed Implementation
[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0042] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0043] Furthermore, the terms "first," "second," and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0045] An intelligent fire early warning system, such as Figure 1 and Figure 2 As shown, it includes a heat flow detection circuit, a temperature detection circuit, a smoke detection circuit, a control circuit, and a buzzer 13.
[0046] The heat flow detection circuit is used to collect ambient hot air and output a signal after a certain period of time; the temperature detection circuit starts working in response to the signal output by the heat flow detection circuit and feeds back a signal after collecting the ambient temperature; the smoke detection circuit starts working in response to the signal output by the heat flow detection circuit and feeds back a signal after collecting the ambient smoke concentration; the control circuit controls the buzzer 13 to work after responding to the feedback signals from the heat flow detection circuit, the temperature detection circuit, and the smoke detection circuit; the buzzer 13 is used for alarm.
[0047] Among them, such as Figure 1 and Figure 2 As shown, the heat flow detection circuit includes a heat flow sensor 1, a voltage comparison circuit 2, a delay trigger circuit 3, a timing circuit 4, and a first switching circuit 5. The voltage comparison circuit 2 includes a voltage comparator, the delay trigger circuit 3 includes an RC delay circuit, the timing circuit 4 includes a minimum system based on a 555 timer chip, and the first switching circuit 5 includes a transistor switch.
[0048] Heat flux sensor 1 is used to collect ambient hot air and feed back heat flux signal; the input terminal of voltage comparison circuit 2 is coupled to the output terminal of heat flux sensor 1, and the voltage comparison circuit 2 outputs a first comparison signal after the heat flux signal is greater than the heat flux reference signal; the input terminal of delay trigger circuit 3 is coupled to the output terminal of voltage comparison circuit 2, and the delay trigger circuit 3 starts timing after responding to the first comparison signal and outputs a trigger signal after the timing time ends; the input terminal of timing circuit 4 is coupled to the output terminal of delay trigger circuit 3, and the timing circuit 4 starts timing after responding to the trigger signal and outputs a timing signal within the timing time; the input terminal of first switch circuit 5 is coupled to the output terminal of timing circuit 4, and the first switch circuit 5 controls the circuit in which it is located to conduct after responding to the timing signal.
[0049] like Figure 1 and Figure 2As shown, the temperature detection circuit includes a temperature sensor 6 and a temperature comparison circuit 7, the smoke detection circuit includes a smoke sensor 8 and a smoke comparison circuit 9, the temperature comparison circuit 7 includes a voltage comparator, and the smoke comparison circuit 9 includes a voltage comparator.
[0050] Temperature sensor 6 is used to collect ambient temperature and feed back temperature signal; the input terminal of temperature comparison circuit 7 is coupled to the output terminal of temperature sensor 6, and temperature comparison circuit 7 feeds back a second comparison signal in response to the temperature signal being greater than the preset temperature reference signal.
[0051] The smoke sensor 8 is used to collect the ambient smoke concentration and feed back the smoke signal; the input terminal of the smoke comparison circuit 9 is coupled to the output terminal of the smoke sensor 8, and the smoke comparison circuit 9 feeds back a third comparison signal in response to the smoke signal being greater than a preset smoke reference signal.
[0052] like Figure 1 and Figure 2 As shown, the control circuit includes a first judgment circuit 10, a second judgment circuit 11, and a second switching circuit 12. Both the first judgment circuit 10 and the second judgment circuit 11 include AND gate circuits, and the second switching circuit 12 includes a transistor switch.
[0053] The input terminal of the first judgment circuit 10 is coupled to the output terminals of the temperature detection circuit and the smoke detection circuit. The first judgment circuit 10 simultaneously responds to the temperature detection circuit and the smoke detection circuit and then feeds back a first judgment signal. The input terminal of the second judgment circuit 11 is coupled to the output terminal of the heat flow detection circuit and the first judgment circuit 10. The second judgment circuit 11 simultaneously responds to the heat flow detection circuit and the first judgment circuit 10 and then feeds back a second judgment signal. The input terminal of the second switch circuit 12 is coupled to the output terminal of the second judgment circuit 11. The second switch circuit 12 responds to the second judgment signal and then controls the buzzer 13 to be powered on.
[0054] In actual operation, this invention uses a heat flow detection circuit to detect the hot air generated in the early stages of a fire. After collecting the ambient hot air data and outputting a signal after a certain period of time, it then powers on the temperature detection circuit and the smoke detection circuit. The temperature detection circuit and the smoke detection circuit further collect the ambient temperature and the concentration of ambient smoke and feed back the signals. Finally, the control circuit responds to the signals fed back by the heat flow detection circuit, the temperature detection circuit, and the smoke detection circuit and starts to control the buzzer 13 to sound an alarm. In this way, the fire warning system can make relatively accurate warnings without the aid of a processor, and the judgment is relatively accurate.
[0055] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An intelligent fire early warning system, characterized in that, include A heat flow detection circuit is used to collect ambient hot air and output a signal after a certain period of time; A temperature detection circuit, which starts working in response to the signal output by the heat flow detection circuit and collects the ambient temperature and then feeds back the signal. A smoke detection circuit, which starts working in response to the signal output by the heat flow detection circuit and collects the ambient smoke concentration before feeding back the signal. A buzzer (13) is used for alarm purposes; The control circuit controls the buzzer (13) to work in response to signals fed back from the heat flow detection circuit, the temperature detection circuit, and the smoke detection circuit.
2. The intelligent fire early warning system according to claim 1, characterized in that, The heat flow detection circuit includes A heat flow sensor (1) is used to collect ambient hot air and feed back a heat flow signal; Voltage comparison circuit (2), the input terminal of the voltage comparison circuit (2) is coupled to the output terminal of the heat flow sensor (1), and the voltage comparison circuit (2) outputs a first comparison signal in response to the heat flow signal being greater than the heat flow reference signal; The input terminal of the delay trigger circuit (3) is coupled to the output terminal of the voltage comparison circuit (2). The delay trigger circuit (3) starts timing in response to the first comparison signal and outputs a trigger signal after the timing time ends. The timing circuit (4) has its input terminal coupled to the output terminal of the delay trigger circuit (3). The timing circuit (4) starts timing in response to the trigger signal and outputs a timing signal within the timing time. The first switching circuit (5) has its input terminal coupled to the output terminal of the timing circuit (4). The first switching circuit (5) controls the circuit in which it is located to conduct after responding to the timing signal.
3. The intelligent fire early warning system according to claim 1, characterized in that, The temperature detection circuit includes Temperature sensor (6), the temperature sensor (6) is used to collect ambient temperature and feed back temperature signal; Temperature comparison circuit (7), the input terminal of the temperature comparison circuit (7) is coupled to the output terminal of the temperature sensor (6), and the temperature comparison circuit (7) feeds back a second comparison signal in response to the temperature signal being greater than the preset temperature reference signal.
4. The intelligent fire early warning system according to claim 1, characterized in that, The smoke detection circuit includes A smoke sensor (8) is used to collect the ambient smoke concentration and feed back a smoke signal; The smoke comparison circuit (9) is coupled to the output of the smoke sensor (8). The smoke comparison circuit (9) responds to the smoke signal being greater than a preset smoke reference signal by feeding back a third comparison signal.
5. The intelligent fire early warning system according to claim 1, characterized in that, The control circuit includes The first judgment circuit (10) has its input terminal coupled to the output terminals of the temperature detection circuit and the smoke detection circuit. The first judgment circuit (10) responds to the temperature detection circuit and the smoke detection circuit simultaneously and then feeds back a first judgment signal. The second judgment circuit (11) is coupled to the output of the heat flow detection circuit and the first judgment circuit (10). The second judgment circuit (11) responds to the heat flow detection circuit and the first judgment circuit (10) simultaneously and then feeds back a second judgment signal. The second switching circuit (12) has its input terminal coupled to the output terminal of the second judgment circuit (11). The second switching circuit (12) controls the buzzer (13) to be powered on after responding to the second judgment signal.
6. The intelligent fire early warning system according to claim 2, characterized in that, The voltage comparison circuit (2) includes a voltage comparator, the delay trigger circuit (3) includes an RC delay circuit, the timing circuit (4) includes a minimum system based on a 555 timer chip, and the first switching circuit (5) includes a transistor switch.
7. The intelligent fire early warning system according to claim 3, characterized in that, The temperature comparison circuit (7) includes a voltage comparator.
8. The intelligent fire early warning system according to claim 4, characterized in that, The smoke comparison circuit (9) includes a voltage comparator.
9. The intelligent fire early warning system according to claim 5, characterized in that, The first judgment circuit (10) and the second judgment circuit (11) both include AND gate circuits, and the second switching circuit (12) includes a transistor switch.