Network type fireproof monitoring device

Abstract

The utility model discloses a network type fireproof monitoring device, comprising a fire detector, a host and a fireproof monitoring board card, the fireproof monitoring board card is provided with a CPU and a backboard, and the backboard is electrically connected with the host; the CPU is electrically connected with a CAN module, a first network module, a data disk and a power conversion module, and the power conversion module is connected with the backboard; the CAN module comprises a first CAN interface, a second CAN interface and a third CAN interface, and the fireproof monitoring board card is in communication connection with the fire detector through the first CAN interface and the second CAN interface to form an annular CAN bus network; a CAN bus redundancy communication mode is adopted between the fireproof monitoring board card and the fire detector, so that when a communication bus is in an open circuit, the fire detection data link is ensured to be normal, and the transmission speed, reliability and stability of fireproof detection data can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of fire prevention monitoring devices, in particular to a network type fire prevention monitoring device. Background Art

[0002] Fire monitoring systems use smoke and heat detectors, flame detectors, and temperature-sensing cables installed in the driver's cab, machinery room, electrical room, and diesel engine room (for diesel locomotives). These devices sense physical quantities like smoke and heat to detect fires and issue an alarm when a fire is detected. All fire detectors can issue alarm or fault signals through local indicator lights.

[0003] Existing fire monitoring devices use a two-way bus to communicate with fire detectors. This bus suffers from poor stability and reliability, is sensitive to interference and noise, and is prone to data loss and erroneous support. It generally supports only point-to-point communication, has a simple communication structure, and has slow data transmission speeds. It lacks error detection and correction, making it unsuitable for applications with demanding data transmission requirements. These factors make it difficult to ensure reliable and timely fire detection and alarms.

[0004] In addition, for data storage, existing fire monitoring devices mostly use SD card storage or share a storage disk with the system program storage disk, which can easily lead to data loss due to poor contact of the SD card, damage to the system program memory, etc. Utility Model Content

[0005] The purpose of the utility model is to provide a network-type fire monitoring device, aiming to improve the problems of existing fire monitoring devices that cannot ensure reliable and timely fire detection and alarm and are prone to data loss.

[0006] The utility model is achieved in this way:

[0007] A network-type fire monitoring device includes a fire detector, a host and a fire monitoring board. The fire monitoring board is provided with a CPU and a backplane. The backplane is electrically connected to the host, and the host provides power to the backplane; the CPU is electrically connected to a CAN module, a first network module, a data disk and a power conversion module, and the power conversion module is electrically connected to the backplane; the CAN module includes a first CAN interface, a second CAN interface and a third CAN interface, and the fire monitoring board is communicatively connected to the fire detector through the first CAN interface and the second CAN interface respectively, forming a ring CAN bus network; the fire monitoring board is electrically connected to the fire detector through the power conversion module to provide power for the fire detector, and the fire monitoring board is communicatively connected to the host through the first network module and the third CAN interface.

[0008] Furthermore, the backplane outputs DC24V, and the power conversion module includes a DC24 to DC12 power supply module, which converts the DC24V output by the backplane into DC12V for internal power supply of the fire monitoring board.

[0009] Furthermore, the power conversion module includes a DC24 to DC24 power supply module, and the fire monitoring board is electrically connected to the fire detector through the DC24 to DC24 power supply module to supply power to the fire detector.

[0010] Furthermore, a short circuit detection module is connected between the CPU and the DC24 to DC24 power supply module. The short circuit detection module is connected to the backplane. The short circuit detection module is used to detect whether a short circuit occurs in the fire detector.

[0011] Furthermore, the system disk and data disk of the CPU both use EMMC memory, and the storage capacity of the EMMC memory is 8GB.

[0012] Furthermore, the CPU is also electrically connected to a second network module, the fire monitoring board is provided with a front panel, the front panel is provided with a DB9 interface, and the second network module is communicatively connected to the DB9 interface.

[0013] Furthermore, an indicator light is provided on the front panel, and the CPU is electrically connected to the indicator light via a GPIO interface module.

[0014] Furthermore, the CPU is electrically connected to a DC12 to DC5 power supply module, the DC12 to DC5 power supply module is electrically connected to a TYPE-C power supply interface, and the DC12 to DC5 power supply module outputs DC5V to the TYPE-C power supply interface.

[0015] Furthermore, the fire detector includes one or more of a smoke and heat detector, a flame detector, and a linear heat fire detector.

[0016] Furthermore, the linear heat-sensing fire detector includes an interface module, a temperature-sensing cable and a terminal module. The interface module and the terminal module are connected through the temperature-sensing cable. The interface module includes an input module and a temperature-sensing cable junction box. The terminal module can use a temperature-sensing cable terminal box.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The fire monitoring board of this utility model adopts CAN bus redundant communication mode with fire detectors. The fire monitoring board uses two CAN interfaces to connect to the fire detectors in a ring. When the communication bus is open, the fire detection data link is guaranteed to be normal, which can effectively improve the transmission speed, reliability and stability of fire detection data.

[0019] 2. The system disk and data storage disk of the fire monitoring board of the present invention are two independent memories. Both independent memories use EMMC memory, and both are directly welded to the board, which will not cause poor contact. At the same time, when the system disk fails, the integrity of the stored data can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall electrical control connection of the utility model;

[0021] Figure 2 This is a diagram of the internal functional modules of the fire monitoring board of the present utility model;

[0022] Figure 3 This is a structural block diagram of the interface structure of the CAN module of the fire prevention monitoring board of the present invention and a structural block diagram of the electrical connection between each interface and the fire detector and the host. DETAILED DESCRIPTION

[0023] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0025] like Figure 1As shown, a network-based fire monitoring device includes fire detectors, a host computer, and a fire monitoring board. The fire detectors include smoke and heat detectors, flame detectors, and linear temperature fire detectors. The smoke and heat detector can be the JTY-DL-FH-311 smoke and heat detector. The flame detector can be an infrared + ultraviolet composite flame detector, such as the MIC-200 composite flame detector with a DC24V operating voltage. The linear temperature fire detector can be the JTW-LD-PTA302 or JTW-LD-JBF4310 linear temperature fire detector. The structure of a common linear temperature fire detector generally includes an interface module, a temperature cable, and a terminal module. The interface module and the terminal module are connected via a temperature cable. The interface module includes an input module and a temperature cable junction box. The terminal module can use a temperature cable terminal box.

[0026] like Figure 1 、 Figure 2 and Figure 3 As shown, the fire monitoring board is equipped with a CPU and a backplane. The backplane is electrically connected to the host computer, which provides power to the backplane, and the backplane outputs DC24V. The CPU is electrically connected to the CAN module, the first network module, the second network module, the data disk, and the power conversion module, which is electrically connected to the backplane. The CPU's system disk and data disk both use EMMC memory, and the storage capacity of the EMMC memory is 8GB. The CPU's system disk and data disk are two independently configured memories, both directly welded to the fire monitoring board, preventing poor contact and ensuring the integrity of the stored data when the system disk fails. The CAN module includes a first CAN interface, a second CAN interface, and a third CAN interface. The fire monitoring board is connected to the fire detector through the first and second CAN interfaces respectively, forming a ring CAN bus network. The fire monitoring board is connected to the host computer through the first network module and the third CAN interface. This dual communication connection allows data transmission to proceed normally as long as one of the two communication modes is functioning properly.

[0027] like Figure 1 and Figure 2 As shown, the power conversion module includes a 24V DC to 12V DC power module and a 24V DC to 24V DC power module. The 24V DC to 12V DC power module converts the 24V DC output from the backplane to 12V DC for internal power supply to the fire monitoring board. The fire monitoring board is electrically connected to the fire detector via the 24V DC to 24V DC power module, providing power to the fire detector. A short-circuit detection module is connected between the CPU and the 24V DC to 24V DC power module. The short-circuit detection module is connected to the backplane and detects whether a short circuit has occurred in the fire detector. If a short circuit occurs, it automatically shuts down the output and logs the event.

[0028] like Figure 2 As shown, the CPU is also electrically connected to a second network module. The fire monitoring board is equipped with a front panel with a DB9 port for debugging. The second network module is communicatively connected to the DB9 port. The CPU is also electrically connected to a DC12 to DC5 power module, which is electrically connected to a Type-C power supply port. The DC12 to DC5 power module outputs DC5V to the Type-C power supply port. The front panel also has an indicator light, which is electrically connected to the CPU via the GPIO interface module. The indicator light can be used to indicate operating status and alarms.

[0029] The fire monitoring board of this utility model operates in the following manner: The fire monitoring board is based on a domestically produced CPU, with an onboard EMMC serving as the system disk, offering 8GB of storage capacity. An additional EMMC is added for the data disk, also with an 8GB storage capacity. The DC24V input from the backplane is converted to DC12V and DC24V. The DC12V is used to power the fire monitoring board internally, while the DC24V is routed through the Harding connector to power the fire detectors. The fire detector power supply can be controlled by the CPU, and a short-circuit detection module is provided to automatically shut down the output in the event of a short circuit, which is recorded in a log. The fire monitoring board features two physically independent 100M Ethernet networks: a first network module and a second network module. One network module is routed to the Harding connector for communication with the host computer, and the other to the front panel DB9 connector for debugging. An onboard Type-C connector provides a 5V debugging power supply. The fire monitoring board also includes a CAN module, comprising first, second, and third CAN interfaces, which are routed through the backplane for communication with the host computer and the fire detectors.

[0030] Working principle of the present invention: The present invention is provided with a variety of fire detectors, which detect whether a fire occurs by sensing physical quantities such as smoke, temperature, and light, and promptly issue an alarm when a fire is detected. Two CAN interfaces are used between the fire monitoring board and the fire detector to form a ring CAN bus, which performs redundant backup of the fire detector communication link. In the event of a bus open circuit failure, it can still ensure the normal operation of some fire detectors. In addition, the fire monitoring board and the host use CAN and Ethernet simultaneous transmission for redundant backup. When one of the links fails, it ensures that the alarm status can be uploaded normally, reminding the driver to extinguish the fire in time. Data storage also uses an independent EMMC storage disk to ensure the integrity of the device operation data, which plays a vital role in event analysis.

[0031] In summary, the fire monitoring board of this utility model utilizes redundant CAN bus communication with fire detectors. The fire monitoring board uses two CAN interfaces to connect to the fire detectors in a ring. This ensures the normal operation of the fire detection data link when the communication bus is open, effectively improving the transmission speed, reliability, and stability of fire detection data. The system disk and data storage disk of the fire monitoring board are two independent memories, both using EMMC memory and directly soldered to the board, eliminating poor contact. Furthermore, the integrity of the stored data is guaranteed in the event of a system disk failure.

[0032] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A network-based fire monitoring device, comprising a fire detector, a host computer and a fire monitoring board, characterized in that: The fire monitoring board is provided with a CPU and a backplane, the backplane is electrically connected to the host, and the host provides power to the backplane; the CPU is electrically connected to a CAN module, a first network module, a data disk and a power conversion module, and the power conversion module is electrically connected to the backplane; the CAN module includes a first CAN interface, a second CAN interface and a third CAN interface, and the fire monitoring board is respectively connected to the fire detector through the first CAN interface and the second CAN interface to form a ring CAN bus network; The fire prevention monitoring board is electrically connected to the fire detector through the power conversion module to provide power for the fire detector. The fire prevention monitoring board is communicatively connected to the host through the first network module and the third CAN interface.

2. A network-based fire monitoring device according to claim 1, characterized in that: The backplane outputs DC24V, and the power conversion module includes a DC24 to DC12 power supply module. The DC24 to DC12 power supply module converts the DC24V output by the backplane into DC12V for on-board power supply of the fire monitoring board.

3. A network-type fire monitoring device according to claim 2, characterized in that: The power conversion module includes a DC24 to DC24 power supply module, and the fire monitoring board is electrically connected to the fire detector through the DC24 to DC24 power supply module to supply power to the fire detector.

4. A network-type fire monitoring device according to claim 3, characterized in that: A short circuit detection module is connected between the CPU and the DC24 to DC24 power supply module. The short circuit detection module is connected to the backplane. The short circuit detection module is used to detect whether a short circuit occurs in the fire detector.

5. A network-based fire monitoring device according to claim 1, characterized in that: The system disk and data disk of the CPU both use EMMC memory, and the storage capacity of the EMMC memory is 8GB.

6. A network-based fire monitoring device according to claim 1, characterized in that: The CPU is also electrically connected to a second network module. The fire monitoring board is provided with a front panel, and a DB9 interface is provided on the front panel. The second network module is communicatively connected to the DB9 interface.

7. A network-type fire monitoring device according to claim 6, characterized in that: The front panel is provided with an indicator light, and the CPU is electrically connected to the indicator light via a GPIO interface module.

8. A network-type fire monitoring device according to claim 6, characterized in that: The CPU is electrically connected to a DC12 to DC5 power supply module, the DC12 to DC5 power supply module is electrically connected to a TYPE-C power supply interface, and the DC12 to DC5 power supply module outputs DC5V to the TYPE-C power supply interface.

9. A network-based fire monitoring device according to claim 1, characterized in that: The fire detector includes one or more of a smoke and heat detector, a flame detector and a linear heat fire detector.

10. A network-type fire monitoring device according to claim 9, characterized in that: The linear heat-sensing fire detector includes an interface module, a temperature-sensing cable and a terminal module. The interface module and the terminal module are connected via the temperature-sensing cable. The interface module includes an input module and a temperature-sensing cable junction box. The terminal module can use a temperature-sensing cable terminal box.

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