Fire control system based on PLC logic control

Abstract

The utility model discloses a fire-fighting control system based on PLC logic control, and belongs to the field of fire alarm processing. According to the fire-fighting control system based on PLC logic control, environmental data of a target area is obtained through the detection equipment arranged in the target area, and the information detection unit in the system obtains data detected by the detection equipment and sends the data to the logic processing unit; the logic processing unit can output a corresponding fire hazard grade according to the data, and the linkage unit controls the fire-fighting equipment switch assembly to act according to the fire hazard grade, so that the fire can be timely eliminated through the fire-fighting equipment when a fire hazard occurs; furthermore, the state data of the fire-fighting equipment is detected through a state detection unit, so that whether the linkage system accurately responds to the starting and stopping of the fire-fighting equipment or not is determined, the reliable action of the fire-fighting equipment is guaranteed, the fire extinguishing efficiency is improved, the loss caused by a fire disaster is reduced, and the problem of low reliability of an existing fire-fighting control system is solved.

Description

Technical Field

[0001] This utility model belongs to the field of fire alarm processing technology, specifically relating to a fire control system based on PLC logic control. Background Technology

[0002] Fire protection systems used in nuclear power plants on nuclear islands require high reliability. With technological advancements, existing fire alarm systems typically employ sensors in multiple locations. These sensors detect the specific location of the fire and automatically activate fixed fire suppression equipment, such as fire sprinkler systems and fixed dry powder extinguishers, to initiate initial fire suppression. This reduces the spread of the fire and buys time for firefighters to extinguish it further. However, due to damage from the fire itself or neglect in maintaining the fixed fire suppression equipment, some of this equipment may fail to reliably perform initial fire suppression.

[0003] In summary, existing fire control systems suffer from low reliability. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a fire control system based on PLC logic control, which addresses the shortcomings of the prior art. The system has a novel and reasonable design, simple structure, strong practicality, and is easy to promote and use.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A fire control system based on PLC logic control includes multiple detection devices, multiple fire-fighting devices, an information detection unit, a status detection unit, a logic processing unit, and a linkage unit.

[0007] The logic processing unit is communicatively connected to the information detection unit and the linkage unit, and is used to receive environmental data of the target area and send fire level data to the linkage unit; the information detection unit is communicatively connected to each detection device, and is used to acquire environmental data of the target area detected by multiple detection devices and send it to the logic processing unit; the detection devices are set in the target area and include fire heat detectors, fire smoke detectors, cable heat detectors, and manual fire alarm buttons.

[0008] The linkage unit is communicatively connected to the status detection unit and is also controllably connected to the fire equipment switch assembly. The linkage unit receives fire level data and operating status data of the fire equipment switch assembly, controls the combined actions of the fire equipment switch assembly, and sends a fire alarm signal to the remote fire control center. The status detection unit is communicatively connected to the fire equipment switch assembly and is used to acquire the operating status data of the fire equipment switch assembly. The fire equipment is installed within the target area, and the fire equipment switch assembly includes a smoke exhaust valve, a fusible valve, and a sprinkler valve, used to control the start and stop of the fire equipment.

[0009] Furthermore, the linkage unit is also used to adjust fire level data.

[0010] Furthermore, the information detection unit communicates with the detection equipment via a two-wire bus, and the linkage unit is controlled by the fire-fighting equipment switch assembly via a two-wire bus.

[0011] Furthermore, the environmental data for the target area includes temperature data, smoke data, and alarm signals.

[0012] Furthermore, it also includes a log unit, which is communicatively connected to both the logic processing unit and the linkage unit, and is used to monitor and store the data interaction process between the logic processing unit and the linkage unit.

[0013] Furthermore, the combined actions of fire equipment switch components include a variety of combined actions, which consist of several open states and several closed states of the fire equipment switch; each combined action corresponds one-to-one with the fire level.

[0014] Furthermore, the logic processing unit and the linkage unit adopt a PLC, which is installed in a control cabinet. The control cabinet is equipped with input / output interfaces for communication between the processing unit and the linkage unit.

[0015] Furthermore, the log unit employs a data logger, which is installed in the control cabinet.

[0016] Furthermore, the information detection unit employs a data acquisition card.

[0017] Furthermore, the status detection unit employs a valve sensor.

[0018] This utility model has the following advantages compared with the prior art:

[0019] This utility model relates to a fire control system based on PLC logic control. It acquires environmental data of the target area through detection devices installed within the target area. The information detection unit in the system acquires the data detected by the detection devices and sends it to the logic processing unit. The logic processing unit outputs the corresponding fire level based on this data. The linkage unit controls the operation of the fire equipment switching components according to the fire level, thereby enabling timely fire suppression through fire equipment in the event of a fire. Furthermore, the status detection unit detects the status data of the fire equipment to determine whether the linkage system accurately responds to the start and stop control of the fire equipment, ensuring reliable operation of the fire equipment, improving fire suppression efficiency, reducing losses caused by fire, and solving the problem of low reliability in existing fire control systems.

[0020] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the fire control system based on PLC logic control of this utility model;

[0022] Figure 2 This is a schematic diagram of the hardware structure of a fire control system based on PLC logic control according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Remote fire control center; 2. Control cabinet; 3. Input / output interface;

[0025] 4. Data acquisition card; 5. Detection equipment; 6. Valve sensor; 7. Fire equipment switch assembly. Detailed Implementation

[0026] Example of a fire control system based on PLC logic control:

[0027] like Figure 1 As shown, the fire control system based on PLC logic control includes multiple detection devices (5), multiple fire-fighting equipment, an information detection unit, a status detection unit, a logic processing unit, and a linkage unit. The logic processing unit communicates with the information detection unit via the MODBUS / RTU protocol, while other units and devices in the system communicate via the MODBUS / TCP protocol.

[0028] Specifically, in order to obtain the fire level data of the current target area, the logic processing unit is communicatively connected to the information detection unit and the linkage unit to receive environmental data of the target area and send fire level data to the linkage unit. Specifically, to obtain the environmental data of the target area, the aforementioned information detection unit is communicatively connected to each detection device 5 to obtain the environmental data of the target area detected by multiple detection devices 5 and send it to the logic processing unit; the aforementioned detection devices 5 are installed within the target area and include fire heat detectors, fire smoke detectors, cable-type heat detectors, and manual fire alarm buttons.

[0029] In order to control the fire situation, it is necessary to control the fire-fighting equipment. Specifically, the linkage unit is connected to the status detection unit for communication, and the linkage unit is connected to the fire-fighting equipment switch assembly 7 for control. The linkage unit is used to receive fire level data and operating status data of the fire-fighting equipment switch assembly 7, control the operation of the fire-fighting equipment switch assembly 7, and send a fire alarm signal to the remote fire control center 1.

[0030] By installing detection equipment 5 within the target area to acquire environmental data, the information detection unit sends the data to the logic processing unit. The logic processing unit outputs the corresponding fire level based on the data, and the linkage unit controls the combined actions of the fire-fighting equipment switch assembly 7 according to the fire level, enabling timely fire suppression through fire-fighting equipment. After controlling the fire-fighting equipment switch assembly 7, the linkage system can also determine whether the control of the fire-fighting equipment switch assembly 7 was successful through the status detection unit. The combined actions of the fire-fighting equipment switch assembly 7 include multiple combinations, each consisting of several open and several closed states of the fire-fighting equipment switch; each combination corresponds one-to-one with the fire level, ensuring resource conservation while effectively controlling the fire.

[0031] The status detection unit is communicatively connected to the fire equipment switch assembly 7 to acquire the operating status data of the fire equipment switch assembly 7. The aforementioned fire equipment is installed within the target area. The fire equipment switch assembly 7 includes a smoke exhaust valve, a fusible valve, and a sprinkler valve, used to control the start and stop of the fire equipment. This ensures the linkage unit can reliably control the fire equipment. Combined actions can be: smoke exhaust valve open, fusible valve open, sprinkler valve closed; smoke exhaust valve open, fusible valve closed, sprinkler valve closed; smoke exhaust valve closed, fusible valve closed, sprinkler valve closed. This is just an example of combined actions and does not list all possible combinations; other combinations are also possible.

[0032] To improve response reliability and fire suppression efficiency, this linkage unit is also used to adjust fire severity data. The success of the response is determined based on the status data of the fire equipment switch assembly 7. A successful response indicates that the fire equipment has a certain degree of control over the fire in the target area, and the fire severity can be reduced. If control fails, not only must the fire equipment switch assembly 7 be re-controlled, but the fire severity must also be increased to achieve effective control of the fire in the target area. Adjusting the fire severity based on the success or failure of the response ensures effective fire control.

[0033] To reduce cable usage and lower costs, the information detection unit communicates with the detection device 5 via a two-wire bus, and the aforementioned linkage unit is controlled by the fire equipment switch assembly 7 via a two-wire bus. By adopting two-wire bus technology, the power supply line and signal line are combined into one, eliminating the need for additional power cables and reducing cable usage, thereby lowering construction and material costs.

[0034] To ensure a comprehensive understanding of the target area, environmental data for the target area includes temperature data, smoke data, and alarm signals; this improves the accuracy of fire severity assessment.

[0035] To facilitate the analysis of the overall situation of the target area, a log unit is also included. The log unit is communicatively connected to the logic processing unit and the linkage unit, respectively, and is used to monitor and store the data interaction process of the logic processing unit and the linkage unit. Based on the stored data interaction process of the logic processing unit and the linkage unit, the system maintenance and fault diagnosis are facilitated.

[0036] like Figure 2 As shown, the logic processing unit and the linkage unit adopt a PLC, which is installed in control cabinet 2. Control cabinet 2 is equipped with input / output interfaces 3 for communication between the processing unit and the linkage unit. The PLC has high reliability and strong anti-interference capability, and has a self-diagnostic function, which can promptly issue alarms when a fault occurs, further improving the reliability of the system. The information detection unit uses a data acquisition card 4 to convert the acquired environmental data of the target area into digital data. The status detection unit is a valve sensor 6, which is an MVQ101 model valve sensor, to detect the opening and closing status of each valve switch. The log unit uses a data logger, which is installed in control cabinet 2; preferably, the data logger is a GL220 portable data logger.

[0037] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A fire control system based on PLC logic control, characterized in that: It includes multiple detection devices (5), multiple fire-fighting equipment, information detection unit, status detection unit, logic processing unit, and linkage unit; The logic processing unit is communicatively connected to the information detection unit and the linkage unit, and is used to receive environmental data of the target area and send fire level data to the linkage unit; the information detection unit is communicatively connected to each detection device (5), and is used to acquire environmental data of the target area detected by multiple detection devices (5) and send it to the logic processing unit; the detection devices (5) are set in the target area and include fire heat detectors, fire smoke detectors, cable heat detectors and manual fire alarm buttons. The linkage unit is communicatively connected to the status detection unit and is controllably connected to the fire equipment switch assembly (7). The linkage unit is used to receive fire level data and operating status data of the fire equipment switch assembly (7), control the combined action of the fire equipment switch assembly (7), and send a fire alarm signal to the remote fire control center (1). The status detection unit is communicatively connected to the fire equipment switch assembly (7) and is used to obtain the operating status data of the fire equipment switch assembly (7). The fire equipment is set in the target area. The fire equipment switch assembly (7) includes a smoke exhaust valve, a fusible valve, and a sprinkler valve, which are used to control the start and stop of the fire equipment.

2. A fire control system based on PLC logic control according to claim 1, characterized in that: The linkage unit is also used to adjust the fire level data.

3. A fire control system based on PLC logic control according to claim 1, characterized in that: The information detection unit is connected to the detection device (5) via a two-wire bus, and the linkage unit is connected to the fire equipment switch assembly (7) via a two-wire bus.

4. A fire control system based on PLC logic control according to claim 1, characterized in that: The environmental data for the target area includes temperature data, smoke data, and alarm signals.

5. A fire control system based on PLC logic control according to claim 1, characterized in that: It also includes a log unit, which is communicatively connected to the logic processing unit and the linkage unit, respectively, and is used to monitor and store the data interaction process between the logic processing unit and the linkage unit.

6. A fire control system based on PLC logic control according to claim 1, characterized in that: The fire equipment switch assembly (7) has multiple combined actions, which are composed of several open states and several closed states of the fire equipment switch; each combined action corresponds to a fire level.

7. A fire control system based on PLC logic control according to claim 1, characterized in that: The logic processing unit and the linkage unit adopt a PLC. The PLC is installed in the control cabinet (2). The control cabinet (2) is provided with an input / output interface (3) for communication between the processing unit and the linkage unit.

8. A fire control system based on PLC logic control according to claim 5, characterized in that: The log unit uses a data logger, which is installed in the control cabinet (2).

9. A fire control system based on PLC logic control according to claim 1, characterized in that: The information detection unit uses a data acquisition card (4).

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