CN203192156U - Early warning alarm system for fire-fighting safety - Google Patents
Early warning alarm system for fire-fighting safety Download PDFInfo
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- CN203192156U CN203192156U CN 201320205625 CN201320205625U CN203192156U CN 203192156 U CN203192156 U CN 203192156U CN 201320205625 CN201320205625 CN 201320205625 CN 201320205625 U CN201320205625 U CN 201320205625U CN 203192156 U CN203192156 U CN 203192156U
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Abstract
The utility model relates to an early warning alarm system for fire-fighting safety. The system comprises a monitoring module, a communication module and a comprehensive management module, wherein the monitoring module is connected with the comprehensive management module through the communication module. The monitoring module sends monitored signals to the comprehensive management module through the communication module, and at the same time, the comprehensive management module sends control signals to the monitoring module through the communication module. The monitoring module comprises a single-chip microcomputer, a CO sensor, a CO2 sensor, a humiture sensor, a smoke concentration sensor and an address module. With the system, fire generation features and the defects of conventional fire detection technologies are analyzed, and thresholds of multi-parameter detection and multi-sensor integration are set so that an early fire situation may be determined in a fast and accurate manner, and dynamic and safe escape routes may be provided according to the distribution and diffusion of the fire.
Description
Technical field
The utility model relates to a kind of warning system, particularly a kind of fire alarm warning system for security against fire.
Background technology
All in the market fire alarm systems with using can be divided into two classes, conventional fire warning system and modern fire alarm system, and wherein the conventional fire warning system still is widely used.
Yet, from detecting principle analysis, general single temperature-sensitive or the sense cigarette mode of adopting of traditional fire alarm system.Heat detector is measured the rise of the environment temperature that causes owing to fire or is surpassed the alarm threshold value of setting and starts warning; The sense smoke sensor is in the majority with optical detector of fire smoke and ion smoke detector, can when smokescope surpasses preset threshold, then send warning with a large amount of smog when fire takes place.
There are some problems in existing warning system, at first, fire be a nonlinear kinetics process that is accompanied by a large amount of physics, chemical reaction, these single sensors are a kind of feature of detection of fires only, do not consider a plurality of factors that environmental aspect changes, it is very difficult therefore selecting suitable alarm threshold value.When alarm threshold value arranged when low, then can under interference such as cigarette, culinary art smog, water vapor, produce false alarm; If alarm threshold value arranges too high, then can when being arranged, real fire hazard not report to the police.No calamity wrong report and the problem that has calamity not report take place repeatedly.
Secondly, this traditional single fire alarm system can not be networked, and can not carry out data statistics and real time and on line monitoring, after fire takes place, can accurately not know it is that fire appears in which point or orientation on earth, can not provide and handle fast and effectively and initiatively dredge.
The development trend of modern fire alarm system is intellectuality, multiparameterization and networking.East, the Harbin automation equipment DBE6000 of company limited fire alarm control system for example, the Wuhan bright JB-TB-GM400 of instrucment and meter plant type fire alarm system all is up-to-date in the market fire alarm system.These modern fire early-warning systems have certain intellectuality, and temperature sense and cigarette sense are combined, and can carry out networking control, have automatically and manual operation function.After fire takes place, can carry out early warning according to the threshold value that system sets.Though these fire systems have intellectuality to a certain degree, still there are some defectives.For example monitoring parameter is still not enough, does not break through the means of having now, and the fire alarm judgement lacks scientific, the characteristic that does not have the careful analysis fire to take place, and can't provide active to dredge after the fire generation.
The utility model content
The technical matters that the utility model solves is to provide a kind of fire alarm warning system for security against fire.
The technical solution that realizes the utility model purpose is: a kind of fire alarm warning system for security against fire, comprise monitoring modular, communication module and comprehensive management module, described monitoring modular links to each other with comprehensive management module by communication module, described monitoring modular is transferred to comprehensive management module with the signal that monitors by communication module, and comprehensive management module is transferred to monitoring modular with control signal by communication module simultaneously;
Described monitoring modular comprises single-chip microcomputer, CO sensor, CO
2Sensor, Temperature Humidity Sensor, smokescope sensor and address module, described CO sensor, CO
2Sensor, Temperature Humidity Sensor, smokescope sensor all link to each other with single-chip microcomputer, and the signal that monitors is transferred to single-chip microcomputer, and address module also links to each other with single-chip microcomputer, and address information is transferred to single-chip microcomputer.
Described comprehensive management module can be applied on the intelligent terminals such as PC, mobile phone or PAD.
A kind of method for early warning of the fire alarm warning system for security against fire may further comprise the steps:
Step 1, system power on, and the address positional information is determined in the monitoring module initialization, judge whether system is normal, if normal execution in step 2 then, otherwise restarting systems;
Step 2, temperature, humidity, CO, CO are set
2, smog concentration alarm threshold value and remove alarm threshold value;
Step 3, check CO, CO
2Whether sensor has zero point drift, if there is drift to carry out pick up calibration;
Step 4, monitor temperature, humidity, CO, CO in the middle of the air in real time
2, smokescope;
Step 5, each concentration that will monitor in real time and set alarm threshold value relatively if a kind of alarm threshold value that reaches is arranged, and reach for continuous three times, and early warning then takes place, and point out escape route simultaneously, and the serious situation of fire demarcates, and execution in step 6 afterwards; Otherwise continue execution in step 4;
Step 6, continuation be central temperature, humidity, CO, the CO of monitoring air in real time
2, smokescope, if all concentration parameters all are lower than set releasing threshold value of warning continuous three times, then cancel early warning, system's operate as normal is also returned step 4; System quits work and can import and export every data, so as after the calamity to the situation observation analysis.
The utility model compared with prior art, its remarkable advantage is: 1) the utility model fire alarm warning system is on the defective basis through the characteristics of fully having studied, analyzed fire and existing fire detection technology, detect and be that the threshold value of the Multi-sensor Fusion of foundation is set with the experiment by scientific and effective multiparameter, can not only judge the early stage condition of a fire fast and accurately, and provide dynamic, safe escape route according to distribution and the diffusion of the condition of a fire.2) the utility model fire alarm warning system is a distributed frame, comprise networked early warning and persuasion system that a comprehensive management platform and multi-point monitoring module are formed, wherein monitoring module is the basis of whole fire alarm warning system, and the performance of this module has determined the quality of total system.3) the utility model fire alarm warning system reaches the fire alarm effect accurately, fast for guaranteeing, by to CO, CO
2, temperature, humidity, smokescope parameter analytical calculation, determine that the CO that can report to the police and can not produce erroneous judgement in 10s reports to the police and cancellation threshold value of warning, CO
2The change threshold of the change threshold of warning and cancellation threshold value of warning, smog alarm and cancellation threshold value of warning, temperature alarming and cancellation early warning, humidity warning and cancellation early warning.4) the utility model passes through comprehensive management module for the fire alarm warning system of security against fire, set each threshold value of warning, any one parameter and standard that reaches early warning is arranged in all parameter conditions, then produce early warning, point out the situation of dynamic escape circuit and the current intensity of a fire simultaneously; When all monitoring parameters all are lower than the threshold value that sets, then cancel early warning, it is normal that system is recovered.5) by setting up large-scale sensor wireless intelligent things net, realize the self-organization networking of monitor node, fire can provide a concrete zone location of catching fire when taking place, and reports upper management department, can expand at any time and add new node device, the online transmission of data in real time; 6) can dock by standard interface with existing security protection equipment, provide initiatively to dredge and start interlocks such as spray, ventilation equipment and control, can be reduced to fire risk and property loss minimum.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is the fire alarm warning system structural representation for security against fire of the present utility model.
Fig. 2 is the fire alarm warning system comprehensive management module synoptic diagram for security against fire of the present utility model.
Fig. 3 is the fire alarm warning system method for early warning process flow diagram for security against fire of the present utility model.
Embodiment
In conjunction with Fig. 1, a kind of fire alarm warning system for security against fire of the present utility model, comprise monitoring modular, communication module and comprehensive management module, described monitoring modular links to each other with comprehensive management module by communication module, described monitoring modular is transferred to comprehensive management module with the signal that monitors by communication module, and comprehensive management module is transferred to monitoring modular with control signal by communication module simultaneously;
Described monitoring modular comprises single-chip microcomputer, CO sensor, CO
2Sensor, Temperature Humidity Sensor, smokescope sensor and address module, described CO sensor, CO
2Sensor, Temperature Humidity Sensor, smokescope sensor all link to each other with single-chip microcomputer, and the signal that monitors is transferred to single-chip microcomputer, and address module also links to each other with single-chip microcomputer, and address information is transferred to single-chip microcomputer.
Described communication module is wireless communication module, preferably wifi communication.
Described comprehensive management module comprises controller, the early warning module, the escape indicating module, calibration module, parameter setting module and intensity of a fire indicating module, described early warning module, the escape indicating module, calibration module, parameter setting module all links to each other with controller with intensity of a fire indicating module, under the control of controller, work, described controller receives the relevant information of monitoring modular transmission and to its processing, controller links to each other with the early warning module, control early warning module is sent early warning signal, calibration module links to each other with controller, the information that controller receives is calibrated, described escape indicating module comprises display and audio amplifier, intensity of a fire indicating module is used for the serious situation of fire is indicated, and parameter setting module arranges the parameter of sensor.
The model of single-chip microcomputer is STC12C5A60S2.Described comprehensive management module can be applied on the intelligent terminals such as PC, mobile phone or PAD.
Below system of the present utility model is carried out the description of more refinement:
In monitoring module, CO concentration monitor module: monitor the concentration of CO in the air in real time, and send to comprehensive management module by monitoring module.The relatively more crucial part of monitoring module is the detection of indoor CO gas concentration.The CO sensor is chemical sensor, if CO is arranged in the air, its sensor will be exported faint electric current.The CO monitoring module produces a bias voltage Vbias, is added on the firsts and seconds amplifier, in order to can monitor the signal of CO sensor more accurately.Amplifier U1 is converted to the small voltage that can monitor to the weak current that the CO sensor produces, and amplifier U2 is with the voltage amplification of conversion, so that single-chip microcomputer can accurately carry out the AD conversion.Can calculate the concentration of CO by the value of AD conversion.Monitoring module distributes and is positioned on the ceiling, is the basis of gathering each constituent concentration in the air.
CO
2Concentration monitor module: monitor airborne CO in real time
2Concentration, and send to comprehensive management module by monitoring module.Under the normal condition, airborne CO
2Content is about 350ppm.When breaking out of fire, airborne CO
2Content can sharply rise.The fire alarm warning system adopts integrated CO
2Sensor assembly, single-chip microcomputer pass through the mode of inquiry to CO
2Sensor assembly reads, and then the data of gained is resolved, thereby draws CO
2Concentration value.
Smokescope monitoring modular: monitor airborne smokescope in real time, and send to comprehensive management module by monitoring module.Can produce a large amount of smog simultaneously when producing fire, smoke transducer is realized the fire strick precaution by the concentration that detects smog.What the smog monitoring module used is the ion type smog sensor, its output be magnitude of voltage.The smoke transducer internal resistance is very big, so select high-impedance amplifier U3 for use, output voltage carries out AD to single-chip microcomputer and gathers, by drawing the concentration of smog after calculating through dividing potential drop again behind the amplifier.
Humiture monitoring modular: monitor current temperature and humidity in real time, and send to comprehensive management module by monitoring module.When breaking out of fire, the temperature in the environment can sharply rise, and humidity can descend.System adds Temperature Humidity Sensor and comes detected temperatures humidity, and is more effective, judge whether breaking out of fire accurately.What humidity sensor was exported is frequency signal, measures its output frequency by single-chip microcomputer and can draw humidity value.Temperature sensor can be according to different temperature change resistance values.Measure the magnitude of voltage of temperature sensor, carry out the AD conversion by single-chip microcomputer, can draw resistance value at that time after process is calculated, thereby draw the temperature value of this resistance value correspondence.
Address module: be used for judging the address of current monitoring module, so that fire obtains concrete point or orientation after taking place.Before the system works geocoding can be set voluntarily on monitoring module, like this after system powers on, monitoring module is according to address module, is transferred to comprehensive management module after judging this machine address.After fire takes place, can judge it is which the some breaking out of fire of which orientation accurately according to the geocoding that fire takes place, and avoid this point and provide passway for escaping safely and effectively by escape system.
Communication system module: the passage of data transmission between comprehensive management module and each monitoring modular comprises the bi-directional half-duplex transmission of Monitoring Data, calibration information, monitoring modular mistake etc.Communication system is the half-duplex operation based on the RS-485 agreement.The early warning module sends command information according to specific data communication protocol to monitoring modular by communication system module.Monitoring modular is replied the instruction that the early warning module transmits by communication system module.
Comprehensive management module provides the unified monitoring managing portal to the user, by data and the analysis of platform display monitoring module collection in real time; Provide early warning information accurately under the situation of the condition of a fire having.Provide corresponding escape route.The effect that reaches early warning and handle.Comprehensive management module comprises as follows:
The early warning module: receive the image data of each supervisory system, when reaching early warning value after analyzing and processing, system can send early warning information, carries out corresponding subsequent treatment.CO, CO when the monitoring module collection
2, smog, humiture data analysis when reaching early warning value, the early warning module will be sent early warning signal.The core of this early warning module is analysis, processing, the integration of each monitor data.The early warning module not only will judge whether to reach alarm threshold value, also will analyze other uncertain factors of current environment.By the compensation after the algorithm realization drift.Such as: to CO, CO
2, smog temperature and humidity compensation; To drift compensating of smog etc.
The escape indicating module: when fire generation early warning module was sent early warning information, system can provide escape route in real time according to the distribution of the condition of a fire.This environment in the indoor arrangement more complicated is very important.When fire occurs in (as the megastore) indoor the time, the crowd does not know correct escape route, to such an extent as to and panic other public accidents that takes place, such as the accident of trampling.The situation that this system can take place according to fire, the position, order of severity etc. factor, in conjunction with local circuit, have real-time escape route is provided on the equipment of being presented at and be equipped with corresponding voice suggestion guiding crowd correct flee from the safety zone.This module is particularly important under the situation of indoor environment more complicated.
Calibration module: zero point drift can take place in sensor after operation, this module is used for calibration CO and CO
2Sensor.Zero point drift can take place in sensor after operation, after system starts, if the CO and the CO that gather
2Variant with the normal concentration under the current environment, can be to CO sensor and CO
2Sensor is calibrated.
Parameter setting module: before system's operation, need carry out systematic parameter setting and alarm threshold value and set.Systematic parameter is used for arranging whether preserve image data etc.Alarm threshold value is set and is used for arranging the parameter of reporting to the police and removing warning.Before system operation, can carry out system's setting to whether preserving image data etc.Alarm threshold value is set and is used for arranging the parameter of reporting to the police and removing warning.For finding early stage little fire, and under the condition that can not judge by accident, the setting of alarm threshold value is very important; After fire suppression, also need in time to remove early warning, also will arrange proper so remove threshold value of warning.
Intensity of a fire indicating module: after fire takes place, can point out that the condition of a disaster in which point or orientation is the most serious, show according to the difference of intensity of a fire grade.After fire takes place, according to each image data of monitoring, can point out that in early warning the condition of a disaster in which point or orientation is the most serious and more serious, can effectively put out like this, solve a problem promptly.
Import and export functional module: after fire system is out of service, can further analyze with the data of the form guiding system collection of excel form, also can import the track record data and carry out playback and observe.After fire system is out of service, the data of can guiding system gathering, to the time that fire takes place, reason etc. is made concrete analysis.Also the monitor data of can importing is over play observation simultaneously, judges the prevailing circumstances situation, understands fire trend at that time.
A kind of method for early warning of the fire alarm warning system for security against fire may further comprise the steps:
Step 1, system power on, and the address positional information is determined in the monitoring module initialization, judge whether system is normal, if normal execution in step 2 then, otherwise restarting systems;
Step 2, temperature, humidity, CO, CO are set
2, smog concentration alarm threshold value and remove alarm threshold value;
Step 3, check CO, CO
2Whether sensor has zero point drift, if there is drift to carry out pick up calibration;
Step 4, monitor temperature, humidity, CO, CO in the middle of the air in real time
2, smokescope;
Step 5, each concentration that will monitor in real time and set alarm threshold value relatively if a kind of alarm threshold value that reaches is arranged, and reach for continuous three times, and early warning then takes place, and point out escape route simultaneously, and the serious situation of fire demarcates, and execution in step 6 afterwards; Otherwise continue execution in step 4;
Step 6, continuation be central temperature, humidity, CO, the CO of monitoring air in real time
2, smokescope, if all concentration parameters all are lower than set releasing threshold value of warning continuous three times, then cancel early warning, system's operate as normal is also returned step 4; System quits work and can import and export every data, so as after the calamity to the situation observation analysis.
Definite method of alarm threshold value comprises:
At first by various experiments, as the burning scraps of paper, cloth, timber etc., record is apart from CO, CO in each time period of burning things which may cause a fire disaster different distance
2, smog, temperature, humidity value.
Judge the size of the concentration of gathering in real time and the alarm threshold value that sets.Wherein:
Variation of temperature is slower, and method for early warning is: suppose that current test point is N test point, this moment temperature value be T1, the value of the 1st point is T0, difference and the preset threshold of T1-T0 gained compare, if greater than threshold value three times the warning.If negative, and absolute value is greater than three then cancellation warnings of threshold value.
The variation of humidity also relatively slowly, method for early warning is: suppose that current test point is N test point, this moment, the value of humidity was H1, and the value of the 1st point is H0, and difference and the preset threshold of H0-H1 gained compare, if greater than threshold value three times then warning.If negative, and absolute value is greater than three then cancellation warnings of threshold value.
The variation of CO is relatively sensitive, and method for early warning is: set upper threshold P1 and the threshold value lower limit P0 of CO, current test point value is COValue, if COValue is greater than P1 three times then early warning, if less than P0 three times then cancel early warning.
CO
2Method for early warning is: set CO
2Upper threshold Q1 and threshold value lower limit Q0, current test point value is CO
2If Value is CO
2Value is greater than three then early warning of Q1, if less than Q0 three times then cancel early warning.
The smog method for early warning is: set upper threshold G1 and the threshold value lower limit G0 of smog, current test point value is PValue, if PValue is greater than G1 three times then early warning, if less than G0 three times then cancel early warning.
Claims (4)
1. fire alarm warning system that is used for security against fire, it is characterized in that, comprise monitoring modular, communication module and comprehensive management module, described monitoring modular links to each other with comprehensive management module by communication module, described monitoring modular is transferred to comprehensive management module with the signal that monitors by communication module, and comprehensive management module is transferred to monitoring modular with control signal by communication module simultaneously;
Described monitoring modular comprises single-chip microcomputer, CO sensor, CO
2Sensor, Temperature Humidity Sensor, smokescope sensor and address module, described CO sensor, CO
2Sensor, Temperature Humidity Sensor, smokescope sensor all link to each other with single-chip microcomputer, and the signal that monitors is transferred to single-chip microcomputer, and address module also links to each other with single-chip microcomputer, and address information is transferred to single-chip microcomputer.
2. the fire alarm warning system for security against fire according to claim 1 is characterized in that, described communication module is wireless communication module.
3. the fire alarm warning system for security against fire according to claim 1, it is characterized in that, described comprehensive management module comprises controller, the early warning module, the escape indicating module, calibration module, parameter setting module and intensity of a fire indicating module, described early warning module, the escape indicating module, calibration module, parameter setting module all links to each other with controller with intensity of a fire indicating module, under the control of controller, work, described controller receives the relevant information of monitoring modular transmission and to its processing, controller links to each other with the early warning module, control early warning module is sent early warning signal, calibration module links to each other with controller, the information that controller receives is calibrated, described escape indicating module comprises display and audio amplifier, intensity of a fire indicating module is used for the serious situation of fire is indicated, and parameter setting module is used for the parameter of sensor is arranged.
4. the fire alarm warning system for security against fire according to claim 1 is characterized in that, the model of described single-chip microcomputer is STC12C5A60S2.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104408892A (en) * | 2014-11-25 | 2015-03-11 | 丁松林 | Security system, emergency system, sending device, receiving device and method |
| CN105957293A (en) * | 2016-05-30 | 2016-09-21 | 中广核工程有限公司 | Fire monitoring method and system for containment vessel of nuclear power station during bulge test |
| CN106373318A (en) * | 2016-10-27 | 2017-02-01 | 深圳乐创信息通讯技术有限公司 | Fire prevention and control system based on LoRa technology |
| CN106781207A (en) * | 2017-01-24 | 2017-05-31 | 桂林师范高等专科学校 | Fire alarm system |
| CN106875615A (en) * | 2017-02-15 | 2017-06-20 | 江苏苏美仑智能科技有限公司 | Fire alarm with actively dredge Internet of Things and early warning, leading method |
| CN107452178A (en) * | 2016-08-22 | 2017-12-08 | 杭州北海信息系统有限公司 | Intelligent fire alarm system and fire disaster intelligently alarm method |
| CN107705494A (en) * | 2017-11-14 | 2018-02-16 | 合肥奇骏自动化控制有限公司 | A kind of fire alarm fire-fighting system |
| CN107991433A (en) * | 2017-11-09 | 2018-05-04 | 广州视源电子科技股份有限公司 | Smoke value processing method and system, readable storage medium and smoke processing equipment |
| CN109712352A (en) * | 2019-02-20 | 2019-05-03 | 南京正泽科技股份有限公司 | The guidance system and method for fire-fighting and rescue |
| CN110297435A (en) * | 2019-06-26 | 2019-10-01 | 辽宁省交通高等专科学校 | A kind of computer room multipath environment parameter monitoring system |
| CN110426069A (en) * | 2019-06-26 | 2019-11-08 | 汉威科技集团股份有限公司 | A kind of compound sense cigarette device and its automatic calibrating method |
| CN111127855A (en) * | 2019-12-14 | 2020-05-08 | 武汉斗争信息科技有限公司 | Environmental event monitoring method and system of environmental Internet of things |
| CN112185050A (en) * | 2020-09-25 | 2021-01-05 | 珠海格力电器股份有限公司 | Security level confirmation method and device and fire fighting system |
| CN114419830A (en) * | 2022-01-26 | 2022-04-29 | 江苏南工科技集团有限公司 | Pyrolysis particle fire detection early warning method based on weight algorithm technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104408892A (en) * | 2014-11-25 | 2015-03-11 | 丁松林 | Security system, emergency system, sending device, receiving device and method |
| CN105957293B (en) * | 2016-05-30 | 2018-10-16 | 中广核工程有限公司 | Fire monitoring method and its system during a kind of nuclear power plant containment shell bulge test |
| CN105957293A (en) * | 2016-05-30 | 2016-09-21 | 中广核工程有限公司 | Fire monitoring method and system for containment vessel of nuclear power station during bulge test |
| CN107452178A (en) * | 2016-08-22 | 2017-12-08 | 杭州北海信息系统有限公司 | Intelligent fire alarm system and fire disaster intelligently alarm method |
| CN106373318A (en) * | 2016-10-27 | 2017-02-01 | 深圳乐创信息通讯技术有限公司 | Fire prevention and control system based on LoRa technology |
| CN106781207A (en) * | 2017-01-24 | 2017-05-31 | 桂林师范高等专科学校 | Fire alarm system |
| CN106875615A (en) * | 2017-02-15 | 2017-06-20 | 江苏苏美仑智能科技有限公司 | Fire alarm with actively dredge Internet of Things and early warning, leading method |
| CN107991433A (en) * | 2017-11-09 | 2018-05-04 | 广州视源电子科技股份有限公司 | Smoke value processing method and system, readable storage medium and smoke processing equipment |
| CN107705494A (en) * | 2017-11-14 | 2018-02-16 | 合肥奇骏自动化控制有限公司 | A kind of fire alarm fire-fighting system |
| CN109712352A (en) * | 2019-02-20 | 2019-05-03 | 南京正泽科技股份有限公司 | The guidance system and method for fire-fighting and rescue |
| CN110297435A (en) * | 2019-06-26 | 2019-10-01 | 辽宁省交通高等专科学校 | A kind of computer room multipath environment parameter monitoring system |
| CN110426069A (en) * | 2019-06-26 | 2019-11-08 | 汉威科技集团股份有限公司 | A kind of compound sense cigarette device and its automatic calibrating method |
| CN110426069B (en) * | 2019-06-26 | 2021-08-31 | 汉威科技集团股份有限公司 | Composite smoke sensing device and automatic calibration method thereof |
| CN111127855A (en) * | 2019-12-14 | 2020-05-08 | 武汉斗争信息科技有限公司 | Environmental event monitoring method and system of environmental Internet of things |
| CN112185050A (en) * | 2020-09-25 | 2021-01-05 | 珠海格力电器股份有限公司 | Security level confirmation method and device and fire fighting system |
| CN112185050B (en) * | 2020-09-25 | 2022-03-04 | 珠海格力电器股份有限公司 | Security level confirmation method and device and fire fighting system |
| CN114419830A (en) * | 2022-01-26 | 2022-04-29 | 江苏南工科技集团有限公司 | Pyrolysis particle fire detection early warning method based on weight algorithm technology |
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