Fire door monitoring system based on door magnetic module

Abstract

This utility model relates to the field of fire protection monitoring technology, specifically to a fire door monitoring system based on a door magnetic module. The utility model includes a fire door and a monitoring device installed on the fire door. The fire door includes a door frame and a door body. The monitoring device includes a device body located on the door frame and a magnet located on the door body. The device body includes a protective housing, and within the protective housing are a control module, a temperature detection module, a door magnetic module, and an alarm light. The door magnetic module includes a linear Hall sensor or a reed switch, whose output transmits the collected magnetic field information to the control module, and whose input cooperates with the magnet on the door body. The alarm light is located in the middle of the protective housing, and its input is connected to the control module. This utility model improves the structure of the monitoring device, utilizing the device body that cooperates with the door magnet to achieve temperature detection, door magnetic detection, and alarm functions, realizing real-time monitoring and abnormal alarm of the fire door status.

Description

Technical Field

[0001] This utility model relates to the field of fire protection monitoring technology, specifically to a fire door monitoring system based on a door magnetic module. Background Technology

[0002] Existing door magnetic sensors in the industry are mostly based on reed switches or Hall effect switches, but both output switching signals, making them prone to failure in situations such as irregularly shaped doors, doors that cannot be closed tightly, or the presence of slight magnetic field interference. Reed switches also have drawbacks such as being easily damaged and difficult to manufacture. Current fire door monitoring systems are functionally limited and lack comprehensive monitoring methods. Although some patents, such as CN208460163U, disclose fire door monitoring modules that use door magnetic switch detection modules to sense the status of fire doors and trigger an alarm after the door magnetic switch has been in the off state for a certain period of time, they still have limitations. Therefore, the market urgently needs a fire door monitoring system that integrates temperature detection, door magnetic detection, and alarm functions to comprehensively improve fire safety performance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a fire door monitoring system based on a door magnetic module.

[0004] The technical solution adopted in this utility model is as follows: A fire door monitoring system based on a door magnetic module includes a fire door and a monitoring device installed on the fire door. The fire door includes a door frame and a door body. The monitoring device includes a device body located on the door frame and a magnet located on the door body. The device body includes a protective housing and a control module, a temperature detection module, a door magnetic module, and an alarm light located within the protective housing. The protective housing is rectangular in shape and is installed in the middle of the door frame and connected to the 24V bus via a connecting cable. The control module, located on the main control board of the protective housing, is electrically connected to the temperature detection module, the door magnetic module, and the alarm light, respectively. The temperature detection module includes a temperature sensor, whose output terminal transmits the collected temperature information to the control module; The door magnetic module, including a linear Hall sensor or a reed switch, transmits the collected magnetic field information to the control module at its output and its input cooperates with the magnet on the door. The alarm light is located in the middle of the protective housing, and its input terminal is connected to the control module.

[0005] This technical solution improves the structure of the monitoring device and uses the device body that cooperates with the door magnet to realize temperature detection, door magnetic detection and alarm functions, so as to realize real-time monitoring and abnormal alarm of the fire door status. Specifically, a protective housing for the monitoring device is installed on the door frame, while magnets are attached to the door body. The protective housing not only provides structural support but also connects to a 24V bus via a connecting cable to power the entire system. The rectangular protective housing is installed in the middle of the door frame to ensure a tight fit between the monitoring device and the fire door. The control module is electrically connected to the temperature detection module, the door magnetic module, and the alarm light. It monitors the status of the fire door through sensors and responds accordingly. The temperature detection module includes a temperature sensor, whose output transmits the collected temperature information to the control module, monitoring the temperature near the fire door in real time and providing early warning for emergencies such as fires. The door magnetic module includes a linear Hall sensor or a reed switch, whose output transmits the collected magnetic field information to the control module. When the door is closed, the magnets on the door interact with the door magnetic module, generating a change in the magnetic field. The door magnetic module senses this change and transmits it to the control module, which determines whether the fire door is closed or open based on the change in the magnetic field information. When the control module detects an abnormal status of the fire door, it triggers the alarm light to alert relevant personnel.

[0006] In addition, the fire door monitoring system based on the door magnetic module proposed above according to this utility model may also have the following additional technical features: According to one embodiment of the present invention, the control module is an MCU with a built-in ADC unit. The MCU is connected to the gate magnetic module through a signal conditioning circuit, which includes a low-pass filter, a temperature compensation circuit, and an amplification circuit.

[0007] In this technical solution, the analog signal output by the door magnetic module is processed by the signal conditioning circuit, including low-pass filtering, temperature compensation and amplification. The processed signal is then transmitted to the ADC unit of the MCU for analog-to-digital conversion. If the door is detected to be not closed, the MCU triggers the corresponding alarm action.

[0008] According to one embodiment of the present invention, a 24V bus is laid above the door frame, and the 24V bus is connected to any point on the left, right or middle of the protective housing via connecting wires.

[0009] In this technical solution, a connection point is provided at any point on the left, right, or middle of the protective housing for connecting to the 24V bus via a connecting cable. This allows installers to select the most suitable connection point based on the actual site conditions, thereby simplifying the installation process and improving installation flexibility.

[0010] According to one embodiment of the present invention, the magnets on the door are arranged in a ring array, and each magnet is arranged in an alternating N-S pattern to form a uniform magnetic field gradient along the moving path of the door.

[0011] In this technical solution, the magnet arrangement is used to ensure that the magnetic field changes continuously when the door moves. When the door moves, the adjacent N and S pole magnets will generate magnetic fields in opposite directions. The alternating magnetic field is monitored by the door magnetic module and converted into an electrical signal for processing.

[0012] According to one embodiment of the present invention, the linear Hall sensor is a Hall sensor of model HX6639ISO-D, with a temperature range of -40℃ to +105℃.

[0013] This technical solution uses a linear Hall sensor, model HX6639ISO-D, which, with its wide temperature range, linear output, low power consumption and high sensitivity, can achieve high-precision magnetic field detection and conversion, providing reliable status information for applications such as fire door monitoring systems.

[0014] According to one embodiment of the present invention, the reed switch is a FLEX-14 magnetron with a temperature range of -40℃ to 125℃.

[0015] This technical solution uses a FLEX-14 magnetron. By utilizing the selection of its magnetic materials, reeds, and packaging processes, it can operate stably in a temperature range of -40℃ to 125℃ and respond quickly to changes in external magnetic fields.

[0016] Compared with the prior art, this utility model has the following advantages: This invention improves the structure of the monitoring device and utilizes the device body that cooperates with the door magnet to realize temperature detection, door magnetic detection and alarm functions, thereby achieving real-time monitoring and abnormal alarm of the fire door status. Attached Figure Description

[0017] Figure 1 This is the electrical connection diagram of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of this utility model.

[0019] Figure 3 This is one of the electrical diagrams for a door magnetic module.

[0020] Figure 4 This is the second electrical diagram of the door magnetic module.

[0021] Figure 5 This is the electrical schematic diagram of this utility model.

[0022] In the diagram: 1. 24V bus; 2. Connecting wire; 3. Device body; 4. Door frame; 5. Door body; 6. Magnet. Detailed Implementation

[0023] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1 like Figures 1 to 5 As shown, this embodiment provides a fire door monitoring system based on a door magnetic module, including a fire door and a monitoring device installed on the fire door. The fire door includes a door frame 4 and a door body 5. The monitoring device includes a device body 3 located on the door frame 4 and a magnet 6 located on the door body 5. The device body 3 includes a protective housing and a control module, a temperature detection module, a door magnetic module, and an alarm light located within the protective housing, wherein: The protective housing is rectangular in shape and is installed in the middle of the door frame 4 and connected to the 24V bus 1 via the connecting line 2. The control module, located on the main control board of the protective housing, is electrically connected to the temperature detection module, the door magnetic module, and the alarm light, respectively. The temperature detection module includes a temperature sensor, whose output terminal transmits the collected temperature information to the control module; The door magnetic module, including a linear Hall sensor or a reed switch, transmits the collected magnetic field information to the control module at its output end, and its input end cooperates with the magnet 6 on the door body 5. The alarm light is located in the middle of the protective housing, and its input terminal is connected to the control module.

[0025] like Figures 1 to 5As shown, this technical solution improves the structure of the monitoring device and uses the device body 3, which cooperates with the magnet 6 of the door body 5, to realize temperature detection, door magnetic detection and alarm functions, thereby realizing real-time monitoring and abnormal alarm of the fire door status. Specifically, a protective housing for the monitoring device is installed on the door frame 4, while a magnet 6 is attached to the door body 5. The protective housing not only provides structural support but also connects to the 24V bus 1 via the connecting cable 2 to power the entire system. The rectangular protective housing is installed in the middle of the door frame 4 to ensure a tight fit between the monitoring device and the fire door. The control module is electrically connected to the temperature detection module, the door magnetic module, and the alarm light. It monitors the status of the fire door through sensors and responds accordingly. The temperature detection module includes a temperature sensor, whose output transmits the collected temperature information to the control module, monitoring the temperature near the fire door in real time and providing early warning for emergencies such as fires. The door magnetic module includes a linear Hall sensor or a reed switch, whose output transmits the collected magnetic field information to the control module. When the door body 5 is closed, the magnet 6 on the door body 5 interacts with the door magnetic module, generating a change in magnetic field. The door magnetic module senses this change and transmits it to the control module. The control module determines whether the fire door is closed or open based on the change in magnetic field information. When the control module detects an abnormal status of the fire door, it triggers the alarm light to alert relevant personnel.

[0026] In addition, the fire door monitoring system based on the door magnetic module proposed above according to this utility model may also have the following additional technical features: According to one embodiment of the present invention, the control module is an MCU with a built-in ADC unit. The MCU is connected to the gate magnetic module through a signal conditioning circuit, which includes a low-pass filter, a temperature compensation circuit, and an amplification circuit.

[0027] In this technical solution, the analog signal output by the door magnetic module is processed by the signal conditioning circuit, including low-pass filtering, temperature compensation and amplification. The processed signal is transmitted to the ADC unit of the MCU for analog-to-digital conversion. If the door 5 is detected to be not closed, the MCU triggers the corresponding alarm action.

[0028] According to one embodiment of the present invention, a 24V bus 1 is laid on the top of the door frame 4, and the 24V bus 1 is connected to any point on the left, right or middle of the protective housing via connecting wires 2.

[0029] In this technical solution, a connection point is provided at any point on the left, right, or middle of the protective housing for connecting to the 24V bus 1 via a connecting line 2. This allows installers to select the most suitable connection point based on the actual site conditions, thereby simplifying the installation process and improving installation flexibility.

[0030] According to one embodiment of the present invention, the magnets 6 on the door body 5 are arranged in a ring array, and each magnet 6 is arranged in an alternating N-S arrangement to form a uniform magnetic field gradient along the moving path of the door body 5.

[0031] In this technical solution, the arrangement of magnets 6 is used to ensure that the change of magnetic field is continuous when the door 5 moves. When the door 5 moves, the adjacent N and S pole magnets 6 will generate magnetic field directions in opposite directions. The alternating magnetic field is monitored by the door magnetic module and converted into an electrical signal for processing.

[0032] According to one embodiment of the present invention, the linear Hall sensor is a Hall sensor of model HX6639ISO-D, with a temperature range of -40℃ to +105℃.

[0033] This technical solution uses a linear Hall sensor, model HX6639ISO-D, which, with its wide temperature range, linear output, low power consumption and high sensitivity, can achieve high-precision magnetic field detection and conversion, providing reliable status information for applications such as fire door monitoring systems.

[0034] According to one embodiment of the present invention, the reed switch is a FLEX-14 magnetron with a temperature range of -40℃ to 125℃.

[0035] This technical solution uses a FLEX-14 magnetron. By utilizing the selection of its magnetic materials, reeds, and packaging processes, it can operate stably in a temperature range of -40℃ to 125℃ and respond quickly to changes in external magnetic fields.

[0036] The usage process of the above embodiments is as follows: Figures 1 to 5 As shown, after the device body 3 is connected to the 24V bus 1, it is powered by the 24V bus 1. The control module inside the device body 3 is activated and connected to the temperature detection module, the door magnetic module, and the alarm light. The temperature detection module monitors the temperature near the fire door in real time and transmits information to the control module when there is an anomaly. The door magnetic module (linear Hall sensor or FLEX-14 reed switch) works with the alternating NS magnets 6 arranged in a ring array on the door body 5. When the door body 5 moves, it generates a continuous magnetic field change. The door magnetic module senses this change and transmits a signal to the control module. The control module processes the analog signal output by the door magnetic module through a signal conditioning circuit and performs analog-to-digital conversion. If the door body 5 is not closed or the temperature is abnormal, the control module triggers the alarm light to illuminate, alerting personnel. The system is flexible in installation, and the connection points of the protective housing can be selected according to the site conditions to ensure that the monitoring device is tightly integrated with the fire door, realizing real-time monitoring and anomaly alarm.

[0037] It should be noted that this utility model only improves the hardware of the monitoring device and does not make any changes to the software algorithm, thus meeting the requirements of the utility model.

Claims

1. A fire door monitoring system based on a door magnetic module, comprising a fire door, and a monitoring device arranged on the fire door, characterized in that, The fire door includes a door frame (4) and a door body (5). The monitoring device includes a device body (3) located on the door frame (4) and a magnet (6) located on the door body (5). The device body (3) includes a protective housing and a control module, a temperature detection module, a door magnetic module, and an alarm light located inside the protective housing. The protective housing is rectangular in shape and is installed in the middle of the door frame (4) and connected to the 24V bus (1) via the connecting line (2); The control module, located on the main control board of the protective housing, is electrically connected to the temperature detection module, the door magnetic module, and the alarm light, respectively. The temperature detection module includes a temperature sensor, whose output terminal transmits the collected temperature information to the control module; The door magnetic module includes a linear Hall sensor or a reed switch. Its output terminal transmits the collected magnetic field information to the control module, and its input terminal cooperates with the magnet (6) on the door body (5). The alarm light is located in the middle of the protective housing, and its input terminal is connected to the control module.

2. The fire door monitoring system based on a door magnet module of claim 1, wherein, The control module is an MCU with a built-in ADC unit. The MCU is connected to the gate magnetic module through a signal conditioning circuit, which includes a low-pass filter, temperature compensation, and amplification circuit.

3. The door monitor system based on a reed switch module according to claim 1, wherein, A 24V bus (1) is laid above the door frame (4), and the 24V bus (1) is connected to any point on the left, right or middle of the protective shell through connecting wires (2).

4. The door monitor system based on a reed switch module of claim 1, wherein, The magnets (6) on the door (5) are arranged in a ring array, and each magnet (6) is arranged in an alternating N-S pattern to form a uniform magnetic field gradient along the moving path of the door (5).

5. The door monitor system based on a reed switch module of claim 1, wherein, The linear Hall sensor is a Hall sensor of model HX6639ISO-D, with a temperature range of -40℃ to +105℃.

6. The door monitor system based on a reed switch module of claim 1, wherein, The reed switch is a FLEX-14 magnetron with a temperature range of -40℃ to 125℃.

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