Fire early warning and monitoring device capable of realizing multi-sensor cooperation

Abstract

The utility model relates to the technical field of fire hazard early warning and monitoring, and discloses a fire hazard early warning and monitoring device capable of multi-sensor cooperation, comprising a sensor module; a signal processing module; a microcontroller module; a communication module; an alarm module; the sensor module comprises a smoke sensor, a temperature sensor and a flame sensor; a plurality of sensors are adopted for cooperative work, various fire characteristic parameters including smoke particles and abnormal rising of environment temperature can be collected, infrared radiation or visible light generated by flames can be detected, the accuracy of fire early warning is improved, the sensors transmit collected data to the signal processing module for analysis, and once a fire sign is detected, the signal processing module gives an alarm. When a fire occurs, the alarm module can select different alarm information contents according to the severity of the fire and accurately alarm the position of the fire, and the communication module can transmit the fire information to a fire control center in real time to realize remote monitoring and quick response.

Description

Technical Field

[0001] This utility model relates to the field of fire early warning and monitoring technology, specifically a fire early warning and monitoring device capable of multi-sensor collaboration. Background Technology

[0002] Fire early warning monitoring involves real-time and continuous observation and analysis of various physical and chemical phenomena before and after a fire occurs, enabling timely detection of fires and the issuance of alarms, thus providing a scientific basis for firefighting and rescue operations. Effective fire early warning monitoring can promptly detect fires, prevent their spread, and reduce losses. Furthermore, the analysis of fire data can provide strong support for fire prevention, firefighting and rescue operations, and fire investigations.

[0003] A search revealed that patent application number CN202111501770.0 discloses an electrical fire early warning and monitoring device, comprising an upper cover assembly, a CPU board, a power supply board, a 4G communication board, a cascaded expansion board, a base assembly, wiring terminals, and plugs. This invention provides early warnings by real-time monitoring of voltage, current, and temperature, and by comprehensively calculating and assessing the probability of electrical fires. It can also report the early warning information to the main server via a mobile network to notify operators to make advance work arrangements, ultimately completing a closed-loop control system for fire early warning. This invention effectively solves the deficiency of current electrical fire monitoring devices, which can only detect and alarm when an electrical fire occurs but cannot predict the possibility of a fire in advance, thus ultimately resolving the problem of untimely electrical fire early warnings.

[0004] Current fire early warning and monitoring devices are limited in function, mostly only capable of detecting temperature or smoke particles in the environment, and cannot cover multiple fire characteristic parameters, which reduces the accuracy of fire early warning. After detecting fire hazards, the response speed is slow and cannot eliminate hazards or extinguish fire sources in time. Therefore, we need to propose a fire early warning and monitoring device that can coordinate multiple sensors. Utility Model Content

[0005] The purpose of this invention is to provide a fire early warning and monitoring device capable of multi-sensor collaboration. Employing multi-sensor collaborative operation, it can collect various fire characteristic parameters, including smoke particles, abnormal increases in ambient temperature, and the detection of infrared radiation or visible light generated by flames, thereby improving the accuracy of fire early warning. The sensors transmit the collected data to a signal processing module for analysis. Once fire signs are detected, a response is immediately taken. The alarm module can select different alarm information content based on the severity of the fire and accurately report the location of the fire. The communication module can transmit fire information to the fire control center in real time, enabling remote monitoring and rapid response, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fire early warning and monitoring device capable of multi-sensor collaboration, comprising:

[0007] A sensor module responsible for collecting fire characteristic parameters in the environment;

[0008] A signal processing module used to amplify, filter, and convert signals acquired by the sensor module;

[0009] The microcontroller module is responsible for receiving data transmitted from the signal processing module, processing it, and making decisions.

[0010] A communication module that enables data communication between the device and the host computer;

[0011] An alarm module that triggers an alarm and issues an audible and visual alarm signal when the microcontroller module determines that there is a fire risk;

[0012] The sensor module includes a smoke sensor, a temperature sensor, and a flame sensor;

[0013] The sensor module, signal processing module, communication module, and alarm module are all electrically connected to the microcontroller module, and the sensor module is electrically connected to the signal processing module.

[0014] Preferably, the smoke sensor includes a chip U2 and a light-emitting diode D2. A resistor R1 is connected between pin 1 of the chip U2 and pin 1 of the light-emitting diode D2. A resistor R4 is connected between pin 2 of the chip U2 and pin 3 of the light-emitting diode D2. A resistor R3 is connected between pin 1 of the chip U2 and pin 2 of the light-emitting diode D2. A resistor R5 and a capacitor C14 are connected between pins 4 and 5 of the chip U2.

[0015] Preferably, the temperature sensor includes a chip U1, with three pins of the chip U1 respectively connected to a grounded capacitor C2, a grounded thermistor N1, and a resistor R2 connected to the power supply voltage, and the eight pins of the chip U1 are connected to a grounded capacitor C1.

[0016] Preferably, the flame sensor includes a chip U13 and a connector P1. The three pins of the chip U13 are respectively connected to a capacitor C23, a resistor R13, and an infrared emitting diode N1. The three pins of the connector P1 are connected in series with a resistor R33 and a light-emitting diode D13. The two pins of the connector P1 are respectively connected to a resistor R53, a series resistor R43, and a light-emitting diode D23. The light-emitting diode D13, the resistor R53, the light-emitting diode D23, and the four pins of the connector P1 are all connected to the power supply voltage, and the four pins of the connector P1 are connected to an adjustable resistor R23.

[0017] Preferably, the signal processing module includes amplifier U14, amplifier U24, and amplifier U34. A resistor R34 is connected between pin 3 of amplifier U14 and pin 2 of amplifier U24, and a resistor R44 is connected between pin 3 of amplifier U24 and pin 1 of amplifier U34.

[0018] A resistor R24 ​​is connected to pin 1 of amplifier U14, and a resistor R14 and a capacitor C24 are connected in parallel. A switch S1 is connected between resistor R24 ​​and pin 3 of amplifier U24. A resistor R94 and a capacitor C54 are connected in parallel between pins 2 and 3 of amplifier U14.

[0019] Preferably, the communication module includes a chip U45 and a connector P5 connected together. A resistor R15 is connected between pins 6 and 7 of the chip U45, a resistor R105 is connected between pins 2 and 8 of the chip U45, and capacitors C15 and C17 are connected in parallel between pins 3 and 8 of the chip U45.

[0020] Preferably, the alarm module includes connector CON2, transistor Q16, and transistor Q26. An adjustable resistor VR is connected between pin 1 of connector CON2 and the base of transistor Q16. A resistor GR is connected between pin 2 of connector CON2 and the base of transistor Q16. A resistor R16 is connected between the collector of transistor Q16 and the base of transistor Q26. A light-emitting diode D16 and resistor R26 are connected between resistor R16 and the emitter of transistor Q26. The emitter of transistor Q26 is connected to pin 2 of connector P5. A speaker SP is connected between the emitter of transistor Q16 and the collector of transistor Q26.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model adopts multi-sensor collaborative operation, which can collect a variety of fire characteristic parameters, including smoke particles, abnormal rise in ambient temperature, and detection of infrared radiation or visible light generated by flames, thereby improving the accuracy of fire early warning.

[0023] 2. The sensor of this utility model transmits the collected data to the signal processing module for analysis. Once a fire sign is detected, it immediately takes corresponding action. The alarm module can select different alarm information content according to the severity of the fire and accurately alarm the location of the fire. The communication module can transmit the fire information to the fire control center in real time to realize remote monitoring and rapid response. Attached Figure Description

[0024] Figure 1 This is a system block diagram of the present invention;

[0025] Figure 2 This is the circuit diagram of the smoke sensor of this utility model;

[0026] Figure 3 This is the circuit diagram of the temperature sensor of this utility model;

[0027] Figure 4 This is the circuit diagram of the flame sensor of this utility model;

[0028] Figure 5 This is a circuit diagram of the signal processing module of this utility model;

[0029] Figure 6 This is a circuit diagram of the communication module of this utility model;

[0030] Figure 7 This is the circuit diagram of the alarm module of this utility model. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-7 This utility model provides a technical solution: a fire early warning and monitoring device capable of multi-sensor collaboration, comprising:

[0033] A signal processing module used to amplify, filter, and convert signals acquired by the sensor module;

[0034] The signal processing module includes amplifier U14, amplifier U24, and amplifier U34. A resistor R34 is connected between pin 3 of amplifier U14 and pin 2 of amplifier U24, and a resistor R44 is connected between pin 3 of amplifier U24 and pin 1 of amplifier U34.

[0035] A resistor R24 ​​is connected to pin 1 of amplifier U14, and a resistor R14 and a capacitor C24 are connected in parallel. A switch S1 is connected between resistor R24 ​​and pin 3 of amplifier U24. A resistor R94 and a capacitor C54 are connected in parallel between pins 2 and 3 of amplifier U14.

[0036] Resistors R14, R24, R34, R44, R54, R64, R74, R84, and R94 are used for voltage division, current limiting, and setting operational amplifier gain parameters; capacitors C14, C24, C34, C44, and C54 are used for filtering, signal coupling, and setting time constants. Diode D14 is used for rectification and clamping. Switch S1 is used to switch different operating states of the circuit.

[0037] Amplifier U14 performs differential processing on the two input signals Vin1 and Vin2, amplifying the difference between the two input signals, suppressing common-mode signals, and improving the signal's anti-interference capability. After the output of amplifier U14, a low-pass filter composed of components such as R34 and C14 is used to filter out high-frequency noise and smooth the signal. Then, amplifier U24 further amplifies or adjusts the signal.

[0038] The microcontroller module is responsible for receiving data transmitted from the signal processing module, processing it, and making decisions.

[0039] A communication module that enables data communication between the device and the host computer;

[0040] The communication module includes a chip U45 and a connector P5 connected together. A resistor R15 is connected between pins 6 and 7 of the chip U45, a resistor R105 is connected between pins 2 and 8 of the chip U45, and capacitors C15 and C17 are connected in parallel between pins 3 and 8 of the chip U45.

[0041] Resistor R15 is the CAN bus termination resistor, connected between CANH and CANL; resistor R105 is used for signal matching or current limiting. Capacitors C15 (0.1μF) and C17 (10μF) are used for power supply filtering to stabilize the 3.3V power supply voltage; connector P5 is a 2-pin Header2 interface for connecting to an external CAN bus, with pins connecting to CANL and CANH. CAN_TX is connected to pin PA12 of the microcontroller, and CAN_RX is connected to pin PA11, used for data communication between the microcontroller and the CAN transceiver.

[0042] An alarm module that triggers an alarm and issues an audible and visual alarm signal when the microcontroller module determines that there is a fire risk;

[0043] The alarm module includes connector CON2, transistor Q16, and transistor Q26. An adjustable resistor VR is connected between pin 1 of connector CON2 and the base of transistor Q16. A resistor GR is connected between pin 2 of connector CON2 and the base of transistor Q16. A resistor R16 is connected between the collector of transistor Q16 and the base of transistor Q26. A light-emitting diode D16 and resistor R26 are connected between resistor R16 and the emitter of transistor Q26. The emitter of transistor Q26 is connected to pin 2 of connector P5. A speaker SP is connected between the emitter of transistor Q16 and the collector of transistor Q26.

[0044] Transistors Q16 and Q26 are used for signal amplification and switching control. Resistors R16, R26, adjustable resistor VR, and resistor GR are used for voltage division, current limiting, and providing appropriate bias voltage for the transistors. LED D16 is used to emit light signals for alarm processing.

[0045] The voltage input to the base of transistor Q16 is adjusted by the variable resistor VR, thereby controlling the conduction of transistors Q16 and Q26, and ultimately controlling the current flowing through the speaker SP, thus controlling the speaker's sound output, such as adjusting the volume.

[0046] A sensor module responsible for collecting fire characteristic parameters in the environment;

[0047] The sensor module includes a smoke sensor, a temperature sensor, and a flame sensor;

[0048] The smoke sensor includes a chip U2 and a light-emitting diode D2. A resistor R1 is connected between pin 1 of the chip U2 and pin 1 of the light-emitting diode D2. A resistor R4 is connected between pin 2 of the chip U2 and pin 3 of the light-emitting diode D2. A resistor R3 is connected between pin 1 of the chip U2 and pin 2 of the light-emitting diode D2. A resistor R5 and a capacitor C14 are connected between pins 4 and 5 of the chip U2.

[0049] The temperature sensor includes a chip U1. Pin 3 of the chip U1 is connected to a grounded capacitor C2, a grounded thermistor N1, and a resistor R2 connected to the power supply voltage. Pin 8 of the chip U1 is connected to a grounded capacitor C1.

[0050] Capacitors C1, C2, and C4 are used to filter the input signal or eliminate interference; thermistor N1 changes the voltage value input to the non-inverting input terminal of chip U1, thereby adjusting the trigger threshold of chip U1 to adapt to different application requirements.

[0051] The flame sensor includes a chip U13 and a connector P1. The three pins of the chip U13 are respectively connected to a capacitor C23, a resistor R13, and an infrared emitting diode N1. The three pins of the connector P1 are connected in series with a resistor R33 and a light-emitting diode D13. The two pins of the connector P1 are respectively connected to a resistor R53, a series resistor R43, and a light-emitting diode D23. The light-emitting diode D13, the resistor R53, the light-emitting diode D23, and the four pins of the connector P1 are all connected to the power supply voltage. The four pins of the connector P1 are connected to an adjustable resistor R23.

[0052] LEDs D13 and D23 are used to indicate circuit status, infrared LED N1 is used for signal amplification or switch control, and connector P1 is used to connect external devices or modules.

[0053] The sensor module, signal processing module, communication module, and alarm module are all electrically connected to the microcontroller module, and the sensor module is electrically connected to the signal processing module.

[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fire early warning monitoring device capable of multi-sensor coordination, characterized by, The utility model relates to a kind of fire risk early warning device, including: Sensor module responsible for collecting fire characteristic parameters in environment; Signal processing module for amplifying, filtering and converting the signal collected by sensor module; Microcontroller module responsible for receiving the data transmitted by signal processing module, and processing and decision-making; Communication module for realizing data communication between device and host computer; Alarm module triggers alarm when microcontroller module determines that there is fire risk, and sends sound and light alarm signal. The sensor module includes a smoke sensor, a temperature sensor and a flame sensor. The sensor module, signal processing module, communication module and alarm module are electrically connected to the microcontroller module, and the sensor module is electrically connected to the signal processing module.

2. The fire early warning monitoring device capable of multi-sensor cooperation according to claim 1, characterized in that: The smoke sensor includes a chip U2 and a light-emitting diode D2. A resistor R1 is connected between pin 1 of the chip U2 and pin 1 of the light-emitting diode D2. A resistor R4 is connected between pin 2 of the chip U2 and pin 3 of the light-emitting diode D2. A resistor R3 is connected between pin 1 of the chip U2 and pin 2 of the light-emitting diode D2. A resistor R5 and a capacitor C14 are connected between pin 4 and pin 5 of the chip U2.

3. The fire warning monitoring device capable of multi-sensor cooperation according to claim 1, characterized in that: The temperature sensor includes a chip U1. Pin 3 of the chip U1 is connected to a ground capacitor C2, a ground thermistor N1 and a resistor R2 connected to a power supply voltage, respectively. Pin 8 of the chip U1 is connected to a ground capacitor C1.

4. The fire warning monitoring device capable of multi-sensor cooperation according to claim 1, characterized in that: The flame sensor includes a chip U13 and a connector P1. Pin 3 of the chip U13 is connected to a capacitor C23, a resistor R13 and an infrared emitter N1, respectively. A resistor R33 and a light-emitting diode D13 are connected in series to pin 3 of the connector P1. A resistor R53 and a light-emitting diode D23 connected in series are connected to pin 2 of the connector P1. The light-emitting diode D13, the resistor R53, the light-emitting diode D23 and pin 4 of the connector P1 are connected to a power supply voltage. An adjustable resistor R23 is connected to pin 4 of the connector P1.

5. The fire warning monitoring device capable of multi-sensor cooperation according to claim 1, characterized in that: The signal processing module includes an amplifier U14, an amplifier U24 and an amplifier U34. A resistor R34 is connected between pin 3 of the amplifier U14 and pin 2 of the amplifier U24. A resistor R44 is connected between pin 3 of the amplifier U24 and pin 1 of the amplifier U34. Pin 1 of the amplifier U14 is connected to a resistor R24, a resistor R14 and a capacitor C24 connected in parallel. A switch S1 is connected between the resistor R24 and pin 3 of the amplifier U24. A resistor R94 and a capacitor C54 connected in parallel are connected between pin 2 and pin 3 of the amplifier U14.

6. The fire warning monitoring device capable of multi-sensor cooperation according to claim 1, characterized in that: The communication module includes a chip U45 and a connector P5 connected together. A resistor R15 is connected between pin 6 and pin 7 of the chip U45. A resistor R105 is connected between pin 2 and pin 8 of the chip U45. A capacitor C15 and a capacitor C17 connected in parallel are connected between pin 3 and pin 8 of the chip U45.

7. The fire warning monitoring device capable of multi-sensor cooperation according to claim 1, characterized in that: The alarm module comprises a connector CON2, a triode Q16 and a triode Q26, an adjustable resistor VR is connected between pin 1 of the connector CON2 and the base of the triode Q16, a resistor GR is connected between pin 2 of the connector CON2 and the base of the triode Q16, a resistor R16 is connected between the collector of the triode Q16 and the base of the triode Q26, a light emitting diode D16 and a resistor R26 are connected between the resistor R16 and the emitter of the triode Q26, the emitter of the triode Q26 is connected with pin 2 of the connector P5, and a loudspeaker SP is connected between the emitter of the triode Q16 and the collector of the triode Q26.

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