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CN-122006195-A - Intelligent fire extinguishing control system based on heterogeneous redundancy triggering

CN122006195ACN 122006195 ACN122006195 ACN 122006195ACN-122006195-A

Abstract

The invention discloses an intelligent fire extinguishing control system based on heterogeneous redundancy triggering, which comprises a fire detection unit, a control module, a comparison module, a redundancy trigger circuit, a driving circuit and a fire extinguishing execution device. The control module generates a first trigger signal according to the fire parameter, the comparison module compares the fire parameter with a preset threshold value in a pure hardware mode, a second trigger signal is generated when the fire parameter exceeds the threshold value, the triggering of the comparison module is independent of the control module, the redundant trigger circuit only allows the first trigger signal to pass through when the control module is normal, the second trigger signal is automatically connected when the control module fails, and the driving circuit drives the fire extinguishing executing device to act. The invention realizes the dual guarantee of the priority of the main control and the bottom of the hardware, which is controlled by software intelligently in normal time and the hardware is triggered independently to extinguish fire in fault, thus obviously improving the reliability of the system. The invention is suitable for fire prevention and control of enclosed spaces such as lithium battery charging cabinets, small energy storage boxes, distribution boxes and the like.

Inventors

  • LIU KANG

Assignees

  • 柳康

Dates

Publication Date
20260512
Application Date
20260409

Claims (10)

  1. 1. Intelligent fire extinguishing control system based on heterogeneous redundancy trigger, characterized by comprising: the fire detection unit is used for collecting fire parameters of the protection space; The control module is electrically connected with the fire detection unit and is used for generating a first trigger signal according to a preset control logic; The comparison module is electrically connected with the fire detection unit, the output end of the comparison module is directly connected to the redundant trigger circuit without passing through the control module, and is used for comparing the fire parameter with a preset threshold value in a pure hardware mode, and when the fire parameter exceeds the preset threshold value, a second trigger signal is generated, and the triggering of the comparison module is independent of the control module; The first input end of the redundancy trigger circuit is connected with the output end of the control module, and the second input end of the redundancy trigger circuit is connected with the output end of the comparison module and is used for outputting a driving signal when the first trigger signal or the second trigger signal is effective; The input end of the driving circuit is connected with the output end of the redundancy trigger circuit; and the fire extinguishing execution device is connected with the output of the driving circuit and is used for executing fire extinguishing actions under the driving of the driving circuit.
  2. 2. The intelligent fire suppression control system based on heterogeneous redundant triggering of claim 1, wherein the fire detection unit comprises a temperature sensor and/or a smoke sensor.
  3. 3. The intelligent fire suppression control system based on heterogeneous redundancy triggering of claim 1, wherein the control module is any one of a microcontroller, a microprocessor, a digital signal processor, a programmable logic controller, a field programmable gate array, or an application specific integrated circuit.
  4. 4. The intelligent fire suppression control system based on heterogeneous redundancy triggering of claim 1, wherein the comparison module comprises a comparator chip.
  5. 5. The intelligent fire extinguishing control system based on heterogeneous redundancy triggering of claim 1, wherein the redundancy triggering circuit is a main-standby switching circuit, and is used for cutting off an output path of the comparison module when the control module works normally and cutting on the output path of the comparison module when the control module fails.
  6. 6. The intelligent fire extinguishing control system based on heterogeneous redundancy triggering of claim 1, wherein the control module is configured to output a first trigger signal after receiving a fire signal of the fire detection unit, and judge whether to stop outputting the first trigger signal according to a real-time fire parameter fed back by the fire detection unit.
  7. 7. The intelligent fire suppression control system based on heterogeneous redundancy triggering of claim 6 wherein the control module is further configured to re-output the first trigger signal when the fire signal of the fire detection unit is re-received after the first trigger signal is stopped from being output.
  8. 8. The heterogeneous redundancy-triggered intelligent fire suppression control system of claim 1, wherein the fire suppression execution means comprises: a fire extinguishing agent container for storing a fire extinguishing agent; The input end of the release control valve is connected with the fire extinguishing agent container, and the control end of the release control valve is connected with the output end of the driving circuit and is used for releasing the fire extinguishing agent under the driving of the driving circuit; And the nozzle is connected with the output end of the release control valve.
  9. 9. The intelligent fire extinguishing control system based on heterogeneous redundancy triggering of claim 8, wherein the fire extinguishing agent is a liquid fire extinguishing agent, the fire extinguishing agent container is a liquid storage tank, the fire extinguishing execution device further comprises a pump unit, the pump unit is connected in series between the fire extinguishing agent container and the release control valve, and a control end of the pump unit is connected with an output end of the driving circuit.
  10. 10. The intelligent fire extinguishing control system based on heterogeneous redundancy triggering as claimed in claim 1, wherein the protection space can be divided into a plurality of independent subspaces, each subspace is respectively provided with a corresponding fire detection unit and is respectively provided with an independent release control valve and a nozzle, and the control module selectively controls the release control valve of the corresponding subspace to be opened according to the detection signal of each subspace fire detection unit, and the fire extinguishing agent is conveyed to the subspace where the fire occurs, so that multi-region independent detection and accurate fire extinguishing are realized.

Description

Intelligent fire extinguishing control system based on heterogeneous redundancy triggering Technical Field The invention relates to the technical field of intelligent fire control, in particular to an intelligent fire extinguishing control system based on heterogeneous redundancy triggering, which is suitable for fire prevention and control in places such as lithium battery charging cabinets, household lithium battery storage boxes, energy storage boxes, distribution boxes, 5G base station cabinets, server cabinets and the like. Background The lithium battery has higher energy density, so that the lithium battery is widely applied to various electronic devices, and because of the chemical characteristics and the internal structure of the lithium battery, the lithium battery has increasingly large number of fire accidents caused by thermal runaway, and the conditions of external mechanical abuse (such as extrusion, collision and needling), abnormal charge and discharge processes, external high-temperature environment, cooling system faults, manufacturing defects, equipment aging and the like, the internal chemical energy of the lithium battery is extremely easy to be out of control, so that the fire accidents are caused. The lithium battery fire disaster has the characteristics of rapid temperature rise, easy reburning, high heat release rate and the like, and extremely high requirements on the response speed and the reliability of a fire extinguishing system are provided. Particularly, in small-sized closed spaces such as lithium battery charging cabinets, energy storage boxes, distribution boxes, base station cabinets, server cabinets and the like, the fire rapidly spreads after a fire disaster occurs, and the traditional fire extinguishing equipment is difficult to effectively detect and extinguish the fire source in the initial stage. In the prior art, various fire suppression control systems have emerged. For example, chinese patent application CN201910037416.3 employs a centralized control center to schedule mobile fire extinguishing devices, CN202411641819.6 employs a single MCU to perform fire judgment, and CN202510393791.7 employs a pressure sensor to switch pump sets to maintain supply pressure. The above solutions, although implementing the basic functions of automatic fire extinguishing, all have the common technical drawback that the reliability of the system is entirely dependent on a single control core (control center, MCU or master control unit), once the core fails due to electromagnetic interference, program run-out or hardware failure, the whole system will not be able to perform fire extinguishing actions. In the prior art, chinese patent No. CN222400101U discloses a fire-fighting monitoring system, which uses two control modules to work alternately, and switches by a timer, so as to prolong the service life of a single control module. Although the scheme realizes the redundant backup of the control modules, the scheme has obvious defects that the two control modules are MCUs and belong to isomorphic redundancy, and cannot cope with common faults existing in the MCUs (such as soft faults of electromagnetic interference, program run and the like can affect the two MCUs at the same time). In addition, the scheme relies on a timer to switch, and a control dead zone still exists at the moment of switching or when the timer fails. For the rapid development of lithium battery fires, the reliability of the control core is critical. Therefore, the prior art lacks a fire extinguishing control system which not only can realize intelligent fire judgment and intelligent fire extinguishing control, but also has hardware-level redundancy backup, so as to ensure that the fire extinguishing action can be reliably started under the extreme condition that the control module fails. Disclosure of Invention The invention aims to solve the problem of insufficient reliability of a single MCU control architecture in the prior art, and provides an intelligent fire extinguishing control system based on heterogeneous redundancy triggering, which adopts a heterogeneous redundancy architecture of master control priority and hardware bottom, namely, the heterogeneous redundancy architecture is independently controlled by a software intelligent path in normal time, and is automatically taken over by a hardware pure threshold path in fault time, so that the master and slave redundancy backup of software intelligent detection control and hardware pure threshold control is realized. (1) Technical proposal In order to achieve the above purpose, the invention adopts the following technical scheme: An intelligent fire extinguishing control system based on heterogeneous redundancy triggering, comprising: The fire detection unit is used for collecting fire parameters of the protection space and comprises a first temperature sensor, a second temperature sensor and a first smoke sensor. When a plurality of first temperature sen