A fire protection system and switch

Abstract

This application discloses a fire protection system and a switch, belonging to the field of communication equipment technology. The fire protection system includes a control module, a power supply module, a smoke detection module, and an alarm module. The input terminal of the power supply module is used to connect to a first external voltage, and the output terminal of the power supply module is connected to the power input terminal of the control module. The smoke detection module includes a gas detection unit and a photoelectric smoke detection unit, both of which are connected to the input terminal of the control module. The alarm module is connected to the output terminal of the control module. This application can improve the accuracy of smoke detection.

Description

Technical Field

[0001] This application relates to the field of communication equipment technology, and in particular to a fire protection system and a switch. Background Technology

[0002] Existing fire alarm systems in switches can provide basic smoke detection, but they often rely on a single smoke sensor, which is not sensitive enough to environmental changes and is prone to false alarms or failure to detect changes in smoke concentration, resulting in low smoke detection accuracy. Therefore, improving the accuracy of smoke detection is a pressing technical problem that needs to be solved. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a fire system and switch that can improve the accuracy of smoke detection.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] In a first aspect, this application provides a fire protection system, comprising:

[0006] Control module;

[0007] A power module, wherein the input terminal of the power module is used to connect to a first external voltage, and the output terminal of the power module is connected to the power input terminal of the control module;

[0008] A smoke detection module, comprising a gas detection unit and a photoelectric smoke detection unit, both of which are connected to the acquisition end of the control module;

[0009] An alarm module is provided, which is connected to the output of the control module.

[0010] The fire system according to the first aspect of this application has at least the following beneficial effects: Applied to a switching device, the system combines a gas detection unit and a photoelectric smoke detection unit to detect gases such as smoke and methane, and also provides sensitive detection of changes in environmental factors such as dust, temperature, and humidity, improving the accuracy of smoke detection and thus enhancing the reliability of fire early warning. The control module judges the data from both sensors, reducing false alarms. Compared with the prior art, the embodiments of this application improve the accuracy of smoke detection. Therefore, the embodiments of this application solve the technical problem of how to improve the accuracy of smoke detection.

[0011] According to some embodiments of the first aspect of this application, the power module includes a main power submodule, which includes a data acquisition unit, a reset unit, a pull-up resistor, a first pull-down resistor, and a second pull-down resistor. The input terminal of the data acquisition unit is used to connect to a first external voltage. The power input terminal, reset output terminal, manual reset input terminal, and ground terminal of the reset unit are respectively connected to the output terminal of the data acquisition unit, the first terminal of the pull-up resistor, the first terminal of the first pull-down resistor, and the ground terminal. The second terminal of the first pull-down resistor is connected to the ground terminal. The second terminal of the pull-up resistor is used to connect to a second external voltage. The first terminal and the second terminal of the second pull-down resistor are respectively connected to the reset output terminal of the reset unit and the reset input terminal of the control module. The output terminal of the data acquisition unit is connected to the power input terminal of the control module.

[0012] According to some embodiments of the first aspect of this application, the power supply module further includes a voltage detection submodule, a backup power supply submodule, and a switching submodule. The output terminal of the acquisition unit is connected to the power input terminal of the control module through the switching submodule. The input terminal of the voltage detection submodule is connected to the output terminal of the acquisition unit. The first power supply terminal, the second power supply terminal, the control terminal, and the output terminal of the switching submodule are respectively connected to the output terminal of the acquisition unit, the output terminal of the backup power supply submodule, the output terminal of the voltage detection submodule, and the power input terminal of the control module. The voltage detection submodule is used to change the output control signal according to the voltage output by the acquisition unit. The switching submodule is used to control the main power supply submodule or the backup power supply submodule to supply power to the control module according to the control signal.

[0013] According to some embodiments of the first aspect of this application, the fire system further includes a current detection module, wherein the current input terminal, current output terminal, power input terminal, ground terminal, and analog voltage output terminal of the current detection module are respectively connected to the positive terminal of the power adapter of the switch, the positive power input terminal of the switch, the output terminal of the acquisition unit, the ground terminal, and the analog input terminal of the control module.

[0014] According to some embodiments of the first aspect of this application, the control module includes a communication unit connected to an external network management system, and the communication unit is used to transmit the alarm signal of the alarm module to the external network management system.

[0015] According to some embodiments of the first aspect of this application, the communication unit communicates with an external network management system using the MQTT protocol or the HTTP protocol.

[0016] According to some embodiments of the first aspect of this application, the alarm module includes an alarm display unit and an alarm sound unit, both of which are connected to the output terminal of the control module.

[0017] According to some embodiments of the first aspect of this application, the alarm display unit is an LED light, and the alarm sound unit is a buzzer.

[0018] Secondly, this application provides a switch that includes the fire system described in the first aspect embodiment of this application.

[0019] According to some embodiments of the second aspect of this application, the switch further includes a housing with a through hole, the switch environmental monitoring system is disposed inside the housing, and the gas detection unit and the photoelectric smoke detection unit are disposed on the housing and close to the through hole.

[0020] The present application will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of one embodiment of the fire system of this application;

[0022] Figure 2 This is a circuit diagram of one embodiment of the main power supply submodule of this application;

[0023] Figure 3 This is a schematic diagram of one embodiment of the power module of this application;

[0024] Figure 4 This is a schematic diagram of one embodiment of the current detection module of this application;

[0025] Figure 5 This is a circuit diagram of one embodiment of the gas detection unit of this application.

[0026] Figure label:

[0027] Control module 100, communication unit 110

[0028] Power supply module 200, main power supply submodule 210, acquisition unit 211, reset unit 212, voltage detection submodule 220, backup power supply submodule 230, switching submodule 240.

[0029] Smoke detection module 300, gas detection unit 310, photoelectric smoke detection unit 320

[0030] Alarm module 400, alarm display unit 410, alarm sound unit 420

[0031] Current detection module 500. Detailed Implementation

[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0033] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, and right, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element 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 application.

[0034] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0036] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0037] Reference Figure 1 As shown, the first external voltage is a 12V DC voltage. The fire system includes a control module 100, a power supply module 200, a smoke detection module 300, and an alarm module 400. The input terminal of the power supply module 200 is used to connect to the first external voltage VIN, and the output terminal of the power supply module 200 is connected to the power input terminal A of the control module 100. The smoke detection module 300 includes a gas detection unit 310 and a photoelectric smoke detection unit 320, both of which are connected to the acquisition terminal B of the control module 100. The alarm module 400 is connected to the output terminal C of the control module 100.

[0038] The above embodiments can be applied to switch equipment. By combining the gas detection unit 310 and the photoelectric smoke detection unit 320, it can detect gases such as smoke and methane, and also sensitively detect changes in environmental factors such as dust, temperature, and humidity, improving the accuracy of smoke detection and thus enhancing the reliability of fire early warning. The control module 100 judges the data from the two sensors, reducing false alarms. Compared with the prior art, the above embodiments can improve the accuracy of smoke detection.

[0039] For example, such as Figure 1 , 5 As shown, this circuit uses a QM-N10 gas sensor as the detection element to sense changes in the concentration of flammable gases in the air. The sensor integrates a heating element and a sensitive material; its resistance changes with the concentration of the target gas. During operation, the sensor is preheated by the heater. After the sensitive material adsorbs the gas, a voltage divider network formed by its output and the eighth resistor R8 generates an analog voltage signal related to the gas concentration. This voltage signal is input to the non-inverting input of voltage comparator U1A, while its inverting input is connected to a fixed reference voltage set by resistor Rp.

[0040] When the detected gas concentration rises above a set threshold, the sensor output voltage also increases. Once it exceeds the reference voltage, comparator U1A outputs a high-level signal, driving an LED to illuminate and trigger a visual alarm. Simultaneously, a digital signal is output through the DOUT terminal, which can be directly used by the control module 100 for logical judgment. At the same time, an analog voltage is also output through the AOUT terminal, facilitating the system to obtain more refined concentration information and achieve data acquisition and processing. A filter capacitor C1 is also included in the circuit to suppress interference and improve detection stability. The overall solution has a simple structure, rapid response, and improves the accuracy of smoke detection.

[0041] In some embodiments, the control module 100 may be a Realtek 8382M or similar device to achieve data acquisition, logical judgment, remote communication and alarm triggering.

[0042] Understandably, referring to Figure 1 , 2As shown, the power module 200 includes a main power submodule 210. The main power submodule 210 includes a data acquisition unit 211, a reset unit 212, a pull-up resistor, a first pull-down resistor, and a second pull-down resistor. The input terminal of the data acquisition unit 211 is used to connect to the first external voltage VIN. The power input terminal VCC, the reset output terminal RESET, the manual reset input terminal MR, and the ground terminal GND of the reset unit 212 are respectively connected to the output terminal F (the second end of the fifth resistor R5) of the data acquisition unit 211, the first end of the pull-up resistor R1, the first end of the first pull-down resistor R2, and the ground terminal. The second end of the first pull-down resistor R2 is connected to the ground terminal. The second end of the pull-up resistor R1 is used to connect to the second external voltage EVDDH. The first end and the second end of the second pull-down resistor R3 are respectively connected to the reset output terminal RESET of the reset unit 212 and the reset input terminal D of the control module 100. The output terminal F (the second end of the fifth resistor R5) of the data acquisition unit 211 is connected to the power input terminal A of the control module 100. The first external voltage VIN is connected to the input terminal of the acquisition unit 211, and a stable voltage is provided to the reset unit 212 through the output terminal F of the acquisition unit 211 (the second terminal of the fifth resistor R5), enabling the reset unit 212 to operate reliably in the event of power failure or initial power-on. The reset unit 212 works in conjunction with the pull-up resistor R1, the first pull-down resistor R2, and the second pull-down resistor R3. The pull-up resistor R1 ensures that the reset output terminal RESET remains at a high level to prevent false resets. The first pull-down resistor R2 ensures that the manual reset input terminal MR is at a clear low level when there is no control signal input, preventing floating and malfunctions. The second pull-down resistor R3 connects the reset output terminal RESET of the reset unit 212 to the reset input terminal D of the control module 100, ensuring that the control module 100 can receive a valid reset signal when needed. The overall structure improves the anti-interference capability of the power module 200 and the operational stability of the system.

[0043] For example, such as Figure 2As shown, the acquisition unit 211 includes a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6. These resistors are connected in series to form a voltage divider circuit. The first terminal of the fourth resistor R4 is used to connect to a first external voltage. The second terminal of the fifth resistor R5 (the output terminal F of the acquisition unit 211) is connected to the power input terminal VCC of the reset unit 212. The sixth resistor R6 is grounded. This voltage divider circuit, formed by the fourth resistor R4, fifth resistor R5, and sixth resistor R6, can accurately divide the connected first external voltage, thereby obtaining a stable voltage signal at the output terminal F of the acquisition unit 211 for power supply. This circuit structure not only simplifies circuit design and reduces cost, but also enables the conversion of a larger first external voltage into a smaller voltage to power the reset unit 212. In some embodiments, the reset unit 212 can be selected as a voltage monitoring and reset control chip of model G692L293TC.

[0044] Understandably, referring to Figure 1 , 2 As shown in Figure 3, the power module 200 also includes a voltage detection submodule 220, a backup power submodule 230, and a switching submodule 240. The output terminal F of the acquisition unit 211 (the second end of the fifth resistor R5) is connected to the power input terminal A of the control module 100 through the switching submodule 240. The input terminal of the voltage detection submodule 220 is connected to the output terminal F of the acquisition unit 211 (the second end of the fifth resistor R5). The first input terminal G, the second input terminal H, the third input terminal I, and the output terminal J of the switching submodule 240 are respectively connected to the output terminal F of the acquisition unit 211 (the second end of the fifth resistor R5), the output terminal of the backup power submodule 230, the output terminal of the voltage detection submodule 220, and the power input terminal A of the control module 100. The voltage detection submodule 220 is used to change the output control signal according to the voltage output by the acquisition unit 211. The switching submodule 240 is used to control the main power submodule 210 or the backup power submodule 230 to supply power to the control module 100 according to the control signal. The voltage detection submodule 220 can monitor the voltage output by the acquisition unit 211 in real time and output corresponding control signals according to the voltage status. The switching submodule 240 automatically selects the main power supply submodule 210 or the backup power supply submodule 230 to supply power to the control module 100 according to the control signal, thereby ensuring that the system can continue to supply power stably in the event of main power failure or power outage, and improving the reliability and continuity of power supply of the system.

[0045] In some embodiments, the voltage detection submodule 220 can be selected as an ADC voltage acquisition module, and the switching submodule 240 can be selected as a MOSFET switching circuit or a relay circuit controlled by the MCU. Specifically, two P-channel MOSFETs (such as IRF9540) control the on / off of the main power supply and the backup power supply respectively. The MCU determines whether there is a power failure based on the voltage acquired by the ADC voltage acquisition module, and outputs a control signal through GPIO to control the corresponding MOSFET to turn on, so as to switch to the backup power supply to power the system when the main power supply is abnormal.

[0046] Understandably, referring to Figure 1 , 4 As shown, the fire protection system also includes a current detection module 500. The current input terminal K, current output terminal L, power input terminal M, ground terminal U, and analog voltage output terminal N of the current detection module 500 are respectively connected to the positive terminal V of the power adapter of the switch, the positive power input terminal W of the switch, the output terminal F of the acquisition unit 211 (the second end of the fifth resistor R5), the ground terminal, and the analog input terminal E of the control module 100. By setting up a voltage detection submodule 220, a backup power supply submodule 230, and a switching submodule 240, when the main power supply submodule 210 experiences a power supply failure, the switching submodule 240 can automatically switch to the backup power supply submodule 230 based on the control signal output by the voltage detection submodule 220, thereby ensuring the continuous and stable operation of the control module 100 and improving the system's power supply reliability and fault resistance.

[0047] In some embodiments, the current detection module 500 can be selected as an ACS712 current sensor. The ACS712 current sensor achieves non-contact current measurement through the Hall effect principle, accurately monitoring positive and negative currents, and is widely used in battery management, motor control, power monitoring, and other fields. It features high accuracy, stability, bidirectional measurement capabilities, and a compact size. Furthermore, the ACS712 provides a safe current sensing method, avoiding the electrical hazards associated with contact.

[0048] Understandably, referring to Figure 1 As shown, the control module 100 includes a communication unit 110, which is connected to an external network management system OL. The communication unit 110 is used to transmit the alarm signal from the alarm module 400 to the external network management system OL. The communication unit 110 can transmit the alarm signal generated by the alarm module 400 to the network management system OL in real time, realizing remote monitoring and fault alarm, which helps to improve the system's intelligent management capabilities and fault response efficiency.

[0049] Understandably, the communication unit 110 uses the MQTT or HTTP protocol to communicate with the external network management system, which can achieve efficient and reliable data transmission. It is suitable for scenarios with high real-time requirements, while also taking into account the system's compatibility and flexibility. This helps to improve the timeliness of alarm information uploads and network adaptability, and enhances the system's remote monitoring and management performance.

[0050] Understandably, referring to Figure 1 As shown, the alarm module 400 includes an alarm display unit 410 and an alarm sound unit 420, both of which are connected to the output terminal C of the control module 100. The alarm display unit 410 and the alarm sound unit 420 work together to simultaneously issue audible and visual alarms when the system detects an abnormal state. This dual visual and auditory alertness significantly improves the timeliness of the alarm and the user's awareness, helping relevant personnel to respond quickly and handle faults, thereby enhancing the safety and reliability of the system operation.

[0051] Understandably, the alarm display unit 410 is an LED light and the alarm sound unit 420 is a buzzer, which can simultaneously issue alarm prompts through sound and light when a fault or abnormal state occurs, thereby improving the identifiability and response speed of the alarm and making it easier for on-site personnel to detect and handle the fault in a timely manner.

[0052] The switch in the second aspect of this application includes the fire system of the first aspect of this application, and can improve the accuracy of smoke detection.

[0053] Understandably, the switch also includes a housing with through holes. The switch's environmental monitoring system is located inside the housing. The gas detection unit 310 and the photoelectric smoke detection unit 320 are located on the housing and close to the through holes. They can effectively monitor the gas and smoke conditions inside the switch, promptly detect potential environmental hazards and trigger alarms, and prevent equipment failure or fire risks caused by environmental factors. At the same time, the through holes can also allow air to circulate so that the switch can dissipate heat.

[0054] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A fire protection system applied to a switch, characterized in that, include: Control module; A power module is provided, wherein the input terminal of the power module is used to connect to a first external voltage, and the output terminal of the power module is connected to the power input terminal of the control module; the power module includes a main power submodule, which includes a data acquisition unit, a reset unit, a pull-up resistor, a first pull-down resistor, and a second pull-down resistor. The input terminal of the data acquisition unit is used to connect to the first external voltage. The power input terminal, reset output terminal, manual reset input terminal, and ground terminal of the reset unit are respectively connected to the output terminal of the data acquisition unit, the first end of the pull-up resistor, the first end of the first pull-down resistor, and the ground terminal. The second end of the first pull-down resistor is connected to the ground terminal. The second end of the pull-up resistor is used to connect to a second external voltage. The first end and the second end of the second pull-down resistor are respectively connected to the reset output terminal of the reset unit and the reset input terminal of the control module. The output terminal of the data acquisition unit is connected to the power input terminal of the control module. A smoke detection module, comprising a gas detection unit and a photoelectric smoke detection unit, both of which are connected to the acquisition end of the control module; An alarm module is provided, which is connected to the output of the control module.

2. The fire system according to claim 1, characterized in that, The power module further includes a voltage detection submodule, a backup power supply submodule, and a switching submodule. The output terminal of the acquisition unit is connected to the power input terminal of the control module through the switching submodule. The input terminal of the voltage detection submodule is connected to the output terminal of the acquisition unit. The first power supply terminal, second power supply terminal, control terminal, and output terminal of the switching submodule are respectively connected to the output terminal of the acquisition unit, the output terminal of the backup power supply submodule, the output terminal of the voltage detection submodule, and the power input terminal of the control module. The voltage detection submodule is used to change the output control signal according to the voltage output by the acquisition unit. The switching submodule is used to control the main power supply submodule or the backup power supply submodule to supply power to the control module according to the control signal.

3. The fire system according to claim 1, characterized in that, The fire system also includes a current detection module. The current input terminal, current output terminal, power input terminal, ground terminal, and analog voltage output terminal of the current detection module are respectively connected to the positive terminal of the power adapter of the switch, the positive terminal of the power input of the switch, the output terminal and ground terminal of the acquisition unit, and the analog input terminal of the control module.

4. The fire system according to claim 1, characterized in that, The control module includes a communication unit, which is connected to an external network management system. The communication unit is used to transmit the alarm signal of the alarm module to the external network management system.

5. The fire system according to claim 4, characterized in that, The communication unit uses the MQTT or HTTP protocol to communicate with the external network management system.

6. The fire system according to claim 1, characterized in that, The alarm module includes an alarm display unit and an alarm sound unit, both of which are connected to the output terminal of the control module.

7. The fire system according to claim 6, characterized in that, The alarm display unit is an LED light, and the alarm sound unit is a buzzer.

8. A switch, characterized in that, Includes the switch environment monitoring system as described in claim 1.

9. The switch according to claim 8, characterized in that, The switch also includes a housing with a through hole. The switch environmental monitoring system is located inside the housing, and the gas detection unit and the photoelectric smoke detection unit are located on the housing and close to the through hole.

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