Cable-type linear independent temperature sensing terminal

Abstract

The invention relates to the technical field of fireproof safety, in particular to a cable type linear independent temperature sensing terminal which comprises a cable type temperature sensing cable module, a data processing module, a self-adaptive fire behavior detection module, a fire behavior analysis and judgment module, a fire extinguishing device control module and a power failure guarantee module. Wherein the cable type temperature sensing cable module is used for detecting temperature data of different positions; the data processing module is used for formatting the temperature data; the self-adaptive fire detection module is used for dynamically adjusting a fire detection threshold value according to environmental conditions; the fire analysis and judgment module is used for judging whether a fire exists or not; the fire extinguishing device control module is used for starting a fire extinguishing device to execute fire extinguishing operation; and the power-off guarantee module is used for providing a standby power supply. According to the invention, through self-adaptive fire behavior detection, accurate fire behavior analysis and judgment, and starting and power-off guarantee of the automatic fire extinguishing device, the accuracy and response speed of fire monitoring of the electrical cabinet are improved, and the loss caused by the fire is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of fire safety, and in particular to a cable-type linear independent temperature sensing terminal. Background Art

[0002] With the widespread use of modern electrical equipment in industrial and commercial places, electrical cabinets have gradually become important facilities for protecting and managing electrical equipment. However, since a large number of electrical control equipment, network equipment and cables are arranged inside the electrical cabinet, these devices will generate heat during operation, and if a fault occurs or the line is aged, it is very easy to cause a fire. Traditional fire detection systems usually rely on monitoring of the external environment and cannot effectively perceive fire hazards inside the electrical cabinet. Especially when there is unstable power supply or power outage in the electrical cabinet, the existing fire detection system often fails, making it difficult to detect and extinguish the fire in the early stage. In addition, the environment inside the electrical cabinet is complex and the temperature fluctuates greatly, which brings additional challenges to the accuracy of fire detection, easily causing false alarms or missed alarms, and increasing the difficulty of monitoring.

[0003] Existing fire detection technology has many shortcomings, especially when dealing with the complex internal environment of electrical cabinets, the detection accuracy and response speed are difficult to meet safety requirements. First, the traditional system is not sensitive enough to temperature changes and cannot flexibly adjust the fire detection threshold according to real-time environmental conditions, resulting in frequent false alarms and missed alarms; second, the existing technology lacks an effective backup power supply solution when the external power supply is interrupted, which may cause the system to completely fail in an emergency and cannot ensure continuous fire monitoring and fire extinguishing operations. Therefore, there is an urgent need for a technical solution that can continue to operate in the event of a power outage, has adaptive fire detection capabilities, and can quickly activate the fire extinguishing device to solve the problems of untimely response, inaccurate detection, and inability to operate in the event of a power outage in electrical cabinet fire detection. Summary of the invention

[0004] Based on the above purpose, the present invention provides a cable-type linear independent temperature sensing terminal.

[0005] A cable-type linear independent temperature sensing terminal, comprising a cable-type temperature sensing cable module, a data processing module, an adaptive fire detection module, a fire analysis and judgment module, a fire extinguishing device control module and a power failure protection module; wherein:

[0006] Cable-type temperature sensing cable module: includes multiple temperature sensors, which are distributed in different positions along the electrical cabinet in the form of cables, used to detect temperature data at different positions and transmit the detected data to the data processing module;

[0007] Data processing module: connected to the cable-type temperature sensing cable module, used to receive the temperature data transmitted by the temperature sensing cable module, and perform data conversion and formatting processing on it;

[0008] Adaptive fire detection module: receives the temperature data processed by the data processing module, dynamically adjusts the fire detection threshold according to environmental conditions, enhances the accuracy of fire detection, and transmits the adjusted detection threshold to the fire analysis and judgment module;

[0009] Fire analysis and judgment module: Based on the adjusted detection threshold, the module analyzes the data according to the preset fire recognition algorithm to determine whether a fire exists, and generates an alarm signal when a fire is detected and transmits it to the fire extinguishing device control module;

[0010] Fire extinguishing device control module: used to receive the fire alarm signal from the fire analysis and judgment module, automatically start the fire extinguishing device to perform the fire extinguishing operation, and monitor the fire extinguishing process;

[0011] Power failure protection module: used to provide backup power when the external power supply is interrupted to ensure the continuous operation of the cable-type temperature sensing cable module, data processing module, adaptive fire detection module, fire analysis and judgment module and fire extinguishing device control module.

[0012] Optionally, the cable-type temperature-sensing cable module includes a temperature sensor unit, a cable distribution unit and a data transmission unit; wherein:

[0013] Temperature sensor unit: including multiple temperature sensors, which are installed along the four walls, top and bottom inner surfaces of the electrical cabinet, and around the heating equipment according to a preset route; the specific route is to extend from the bottom of the electrical cabinet upward to the top, forming a closed path around the inner wall of the electrical cabinet, and additional sensors are added in each corner and area close to high-temperature equipment to accurately monitor temperature data at different locations;

[0014] Cable distribution unit: According to the equipment layout and temperature distribution in the electrical cabinet, cables are arranged along the edge of the electrical cabinet and the area around the equipment. The specific layout rules are as follows: the cables are distributed in a grid shape around the electrical cabinet, with one horizontal cable every 50 cm and vertical cables staggered every 50 cm, ensuring that each sensor covers all the predetermined temperature monitoring points in the electrical cabinet through cable connection, ensuring comprehensive collection of temperature data;

[0015] Data transmission unit: connected to the temperature sensor unit, used to transmit the detected temperature data to the data processing module in real time through mesh-distributed cables.

[0016] Optionally, the data processing module includes a data receiving unit, a data conversion unit and a data formatting unit; wherein:

[0017] Data receiving unit: used to receive temperature data transmitted by the cable-type temperature sensing cable module. The temperature data is an analog signal collected in real time by multiple temperature sensors in the temperature sensing cable. The data receiving unit receives the analog signal through a standard data transmission protocol to ensure the integrity of the data;

[0018] Data conversion unit: used to receive analog signals and convert them into corresponding digital signals. During the data conversion process, an analog-to-digital converter is used to convert the analog signal of each temperature sensor into a processable digital signal;

[0019] Data formatting unit: connected to the data conversion unit, used to rearrange and standardize the digital signal according to a predetermined data format to ensure that all data are uniformly encoded in a preset format. The specific format includes data source identification, timestamp, temperature value and its corresponding sensor location identification.

[0020] Optionally, the adaptive fire detection module includes an environmental data acquisition unit, a threshold calculation unit and a threshold transmission unit; wherein:

[0021] Environmental data acquisition unit: used to collect environmental parameters in the electrical cabinet in real time, including temperature, humidity and equipment operating load conditions, and transmit the collected environmental data to the threshold calculation unit for dynamic calculation;

[0022] Threshold calculation unit: connected to the environmental data acquisition unit and the data processing module, used to receive the processed temperature data and environmental data, and calculate the threshold of fire detection according to the environmental conditions through a preset dynamic algorithm;

[0023] Threshold transmission unit: connected to the threshold calculation unit, used to transmit the dynamically adjusted fire detection threshold to the fire analysis and judgment module. The transmission process is carried out through the internal data bus to ensure the integrity and real-time nature of the data during the transmission process.

[0024] Optionally, the threshold calculation unit includes:

[0025] Receiving data: The threshold calculation unit receives processed temperature data and environmental data, wherein the environmental data includes current ambient temperature, humidity, and equipment load;

[0026] Temperature difference calculation: By calculating the difference between the temperature data and the ambient temperature, the interference caused by the change of the external ambient temperature is eliminated;

[0027] Dynamic threshold adjustment: Based on real-time environmental data, the initial fire detection temperature threshold is dynamically adjusted according to the equipment load and ambient humidity. When the equipment load increases, the temperature threshold for fire detection increases accordingly; when the ambient humidity increases, the temperature threshold decreases to improve the sensitivity of fire detection.

[0028] Historical data comparison and adjustment: Optimize and adjust the detection threshold based on historical environmental data. By comparing the current environmental data with the historical average environmental data, the threshold of fire detection is corrected to reduce false alarms and missed alarms.

[0029] Final output: The adjusted and corrected fire detection threshold is output to the fire situation analysis and judgment module for subsequent fire situation analysis and judgment.

[0030] Optionally, the fire situation analysis and judgment module includes a data analysis unit, a fire situation judgment unit and an alarm signal generation unit, wherein:

[0031] Data analysis unit: used to receive the adjusted fire detection threshold and real-time temperature data of the adaptive fire detection module, and analyze the time series of the temperature data according to the preset fire identification algorithm to determine the rate of temperature change and its relationship with the threshold;

[0032] Fire judgment unit: connected to the data analysis unit. After the data analysis unit completes the analysis of the temperature data, the fire judgment unit makes a final judgment on the result according to the preset rules, and analyzes whether the temperature change meets the triggering conditions in the fire identification algorithm. Specifically, when the temperature rise rate reaches the preset threshold or the temperature exceeds the detection threshold for a predetermined time, it is judged as a fire;

[0033] Alarm signal generating unit: connected to the fire condition judgment unit. When the fire condition judgment unit confirms that the temperature data meets the fire condition conditions, the alarm signal generating unit immediately generates a fire alarm signal and transmits it to the fire extinguishing device control module through the data bus. The alarm signal contains relevant information for triggering the alarm, including the sensor location, current temperature data and trigger conditions.

[0034] Optionally, the data analysis unit specifically includes:

[0035] Receive data: first receive the adjusted fire detection threshold and real-time temperature data from the adaptive fire detection module for subsequent analysis;

[0036] Temperature change rate calculation: Perform time series analysis on the received temperature data, and calculate the temperature change rate by comparing the temperature values ​​at different time points to determine the rising or falling trend of the temperature;

[0037] Analysis of the relationship with the fire detection threshold: Compare the real-time temperature data with the adjusted fire detection threshold. When the real-time temperature exceeds the detection threshold and the temperature change rate exceeds the preset rate threshold, it is preliminarily determined to be a temperature anomaly.

[0038] Time series analysis: After the temperature change rate and temperature exceeding the threshold conditions are met, the data analysis unit will perform time series analysis on the temperature data to confirm whether the temperature continues to exceed the detection threshold for more than a predetermined time range. If the temperature exceeds the threshold for more than a predetermined time, it is determined to be a potential fire;

[0039] Output analysis results: The analysis results of the temperature change rate, current temperature data and duration of the temperature exceeding the threshold are output to the fire situation judgment unit for subsequent fire situation judgment.

[0040] Optionally, the fire situation judgment unit specifically includes:

[0041] Receiving analysis results: receiving analysis results from a data analysis unit, the analysis results including real-time temperature data, temperature change rate, and duration of whether the temperature exceeds a fire detection threshold;

[0042] Temperature rise rate determination: Analyze the temperature change rate to determine whether the actual temperature change rate exceeds the preset rise rate threshold; if the temperature change rate exceeds the preset rate standard, it is preliminarily determined that the temperature change is abnormal;

[0043] Temperature duration determination: Determine whether the temperature has exceeded the fire detection threshold for a predetermined period of time; if the temperature continues to exceed the detection threshold for more than a predetermined period of time, it is considered that a fire exists;

[0044] Final fire determination: Fire determination is based on two conditions. If the temperature change rate exceeds the preset threshold, or the temperature exceeds the fire detection threshold for a period of time that exceeds the preset time, it is finally determined to be a fire.

[0045] Output fire situation judgment result: After completing the fire situation judgment, the fire situation judgment unit outputs the result to the alarm signal generation unit.

[0046] Optionally, the fire extinguishing device control module includes a starting unit, an execution unit and a monitoring unit; wherein:

[0047] Start unit: used to receive the fire alarm signal from the fire analysis and judgment module. When the fire judgment unit determines that there is a fire and generates an alarm signal, the start unit immediately responds and sends a start instruction to the execution unit;

[0048] Execution unit: connected to the starting unit, used to automatically activate the fire extinguishing device after receiving the starting command;

[0049] Monitoring unit: connected to the execution unit, used to monitor the operating status of the fire extinguishing device in real time during the fire extinguishing operation. The monitoring unit records the data during the fire extinguishing process, including the release amount of the fire extinguishing agent, the operation duration and the equipment status, and feeds back the fire extinguishing results to the fire situation analysis and judgment module when the fire extinguishing is completed or in an abnormal situation.

[0050] Optionally, the power failure protection module includes a power monitoring unit, a backup power unit and a switching control unit; wherein:

[0051] Power supply monitoring unit: used to monitor the working status of the external power supply in real time. When the external power supply is powered off or the voltage is abnormal, the power supply monitoring unit can identify the power supply abnormality and transmit the detected power supply status information to the switching control unit;

[0052] Backup power supply unit: connected to the switching control unit to provide emergency power supply to the system when the external power supply is interrupted; the backup power supply unit includes a group of high-capacity batteries, which can provide continuous power supply to the cable-type temperature sensing cable module, data processing module, adaptive fire detection module, fire analysis and judgment module and fire extinguishing device control module in the event of an external power outage, thereby ensuring the normal operation of the system;

[0053] Switching control unit: connected to the power monitoring unit and the backup power unit, used to immediately switch from the external power supply to the backup power supply unit when an external power interruption or abnormality is detected. The switching process is completed in milliseconds, ensuring that the system has uninterrupted power supply when the external power supply is interrupted, and automatically switches back to the main power supply after the external power supply returns to normal.

[0054] Beneficial effects of the present invention:

[0055] The present invention realizes real-time monitoring and accurate detection of fire hazards inside electrical cabinets through the coordinated work of various modules. The adaptive fire detection module can dynamically adjust the fire detection threshold according to the real-time changes of ambient temperature, humidity and equipment load, and is combined with the fire analysis and judgment module to conduct a comprehensive analysis of the temperature change rate and the duration of exceeding the threshold, thereby greatly improving the accuracy and sensitivity of fire detection and avoiding the common false alarm and missed alarm problems in traditional technologies. In addition, the fire extinguishing device control module can quickly start the fire extinguishing device after confirming the fire, ensuring that the fire is controlled in time and effectively reducing the losses caused by the fire.

[0056] The present invention solves the problem that the system cannot operate when the external power supply is interrupted through the power failure protection module, and can monitor the working status of the external power supply in real time. When a power failure occurs, it quickly switches to the backup power supply to ensure that the various functional modules of the system can continue to operate and maintain the monitoring and fire extinguishing operations of the fire, thereby greatly improving the reliability and stability of the system. Especially in emergency situations, it effectively improves the comprehensiveness of the fire monitoring of the electrical cabinet and the emergency response capability, and provides a strong guarantee for the safe operation of electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0058] Figure 1 Schematic diagram of a cable-type linear independent temperature sensing terminal according to an embodiment of the present invention;

[0059] Figure 2 Schematic diagram of a fire situation analysis and judgment module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0060] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0061] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0062] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0063] like Figure 1-Figure 2 As shown, a cable-type linear independent temperature sensing terminal includes a cable-type temperature sensing cable module, a data processing module, an adaptive fire detection module, a fire analysis and judgment module, a fire extinguishing device control module and a power failure protection module; wherein:

[0064] Cable-type temperature sensing cable module: includes multiple temperature sensors, which are distributed in different positions along the electrical cabinet in the form of cables, used to detect temperature data at different positions and transmit the detected data to the data processing module;

[0065] Data processing module: connected to the cable-type temperature sensing cable module, used to receive the temperature data transmitted by the temperature sensing cable module, and perform data conversion and formatting processing on it;

[0066] Adaptive fire detection module: receives the temperature data processed by the data processing module, dynamically adjusts the fire detection threshold according to environmental conditions, enhances the accuracy of fire detection, and transmits the adjusted detection threshold to the fire analysis and judgment module;

[0067] Fire analysis and judgment module: Based on the adjusted detection threshold, the module analyzes the data according to the preset fire recognition algorithm to determine whether a fire exists, and generates an alarm signal when a fire is detected and transmits it to the fire extinguishing device control module;

[0068] Fire extinguishing device control module: used to receive the fire alarm signal from the fire analysis and judgment module, automatically start the fire extinguishing device to perform the fire extinguishing operation, and monitor the fire extinguishing process;

[0069] Power failure protection module: used to provide backup power when the external power supply is interrupted to ensure the continuous operation of the cable-type temperature sensing cable module, data processing module, adaptive fire detection module, fire analysis and judgment module and fire extinguishing device control module.

[0070] The cable-type temperature sensing cable module includes a temperature sensor unit, a cable distribution unit and a data transmission unit; wherein:

[0071] Temperature sensor unit: includes multiple temperature sensors, which are installed along the four walls, top and bottom inner surfaces of the electrical cabinet, and around the heating equipment according to a preset route; the specific route extends from the bottom of the electrical cabinet to the top, forming a closed path around the inner wall of the electrical cabinet, and additional sensors are added in each corner and area near high-temperature equipment to accurately monitor temperature data at different locations to ensure early detection of fire hazards;

[0072] Cable distribution unit: According to the equipment layout and temperature distribution in the electrical cabinet, cables are arranged along the edge of the electrical cabinet and the area around the equipment. The specific layout rules are as follows: the cables are distributed in a grid shape around the electrical cabinet, with one horizontal cable every 50 cm and vertical cables staggered every 50 cm, ensuring that each sensor covers all the predetermined temperature monitoring points in the electrical cabinet through cable connection, ensuring comprehensive collection of temperature data;

[0073] Data transmission unit: connected to the temperature sensor unit, used to transmit the detected temperature data to the data processing module in real time through the meshed cables, ensuring the efficiency and continuity of temperature data transmission and avoiding data interruption caused by single line failure; the above unit uses the installation route of the temperature sensor and the layout rules of the cables to enable the cable-type temperature sensing cable module to form an efficient and comprehensive temperature monitoring network in the electrical cabinet, ensuring early and accurate detection of fire hazards.

[0074] The data processing module includes a data receiving unit, a data conversion unit and a data formatting unit; wherein:

[0075] Data receiving unit: used to receive temperature data transmitted by the cable-type temperature sensing cable module. The temperature data is an analog signal collected in real time by multiple temperature sensors in the temperature sensing cable. The data receiving unit receives the analog signal through a standard data transmission protocol to ensure the integrity of the data;

[0076] Data conversion unit: used to receive analog signals and convert them into corresponding digital signals. The analog-to-digital converter (ADC) is used in the data conversion process to convert the analog signal of each temperature sensor into a processable digital signal to ensure that the converted data can fully reflect the real-time temperature changes of each monitoring point;

[0077] Data formatting unit: connected to the data conversion unit, used to rearrange and standardize the digital signal according to a predetermined data format, ensuring that all data are uniformly encoded in a preset format. The specific format includes data source identification, timestamp, temperature value and its corresponding sensor location identification, ensuring that subsequent modules can quickly identify and process data; through the cooperation of the above-mentioned data receiving unit, data conversion unit and data formatting unit, the data processing module can effectively receive, convert and standardize the temperature data transmitted by the cable-type temperature sensing cable module, and provide accurate and formatted temperature information for subsequent fire analysis and judgment.

[0078] The adaptive fire detection module includes an environmental data acquisition unit, a threshold calculation unit and a threshold transmission unit; wherein:

[0079] Environmental data acquisition unit: used to collect environmental parameters in the electrical cabinet in real time, including temperature, humidity and equipment operation load. Environmental data is collected through a sensor network to ensure that it can accurately reflect the real-time environmental conditions inside the electrical cabinet, and the collected environmental data is transmitted to the threshold calculation unit for dynamic calculation;

[0080] Threshold calculation unit: connected to the environmental data acquisition unit and the data processing module, used to receive the processed temperature data and environmental data, and calculate the threshold of fire detection according to the environmental conditions through a preset dynamic algorithm. Specifically, when the ambient temperature rises or the load increases, the temperature threshold of fire detection is appropriately increased; when the humidity increases, the threshold is appropriately lowered; to ensure the sensitivity and accuracy of fire detection, the dynamic adjustment of the threshold is based on the real-time collected environmental data, and compared and optimized with historical data to reduce false alarms and missed alarms;

[0081] Threshold transmission unit: connected to the threshold calculation unit, used to transmit the dynamically adjusted fire detection threshold to the fire analysis and judgment module. The transmission process is carried out through the internal data bus to ensure the integrity and real-time of the data during the transmission process, so that the fire analysis and judgment module can perform fire analysis and judgment based on the updated threshold. Through the cooperation of the above-mentioned environmental data acquisition unit, threshold calculation unit and threshold transmission unit, the adaptive fire detection module can dynamically adjust the fire detection threshold according to the environmental changes inside the electrical cabinet, thereby improving the accuracy of fire detection, and ensuring that the adjusted threshold is transmitted to the fire analysis and judgment module in time to support subsequent fire analysis work.

[0082] The threshold calculation unit includes:

[0083] Receiving data: The threshold calculation unit receives processed temperature data and environmental data, including the current ambient temperature, humidity, and equipment load, to ensure that the data can reflect the real-time status inside the electrical cabinet;

[0084] Temperature difference calculation: By calculating the difference between the temperature data and the ambient temperature, interference caused by changes in external ambient temperature is eliminated to ensure that fire detection only responds to abnormal temperature increases;

[0085] Dynamic threshold adjustment: Based on real-time environmental data, the initial fire detection temperature threshold is dynamically adjusted according to the equipment load and ambient humidity. When the equipment load increases, the temperature threshold for fire detection increases accordingly to avoid false alarms caused by temperature increases due to normal equipment operation. When the ambient humidity increases, the temperature threshold decreases to increase the sensitivity of fire detection and ensure that fires can be detected promptly in high humidity environments.

[0086] Historical data comparison and adjustment: Optimize and adjust the detection threshold based on historical environmental data. By comparing the current environmental data with the historical average environmental data, the threshold of fire detection is corrected to ensure that the system can make more accurate judgments based on long-term environmental trends and reduce false alarms and missed alarms.

[0087] Final output: The adjusted and corrected fire detection threshold is output to the fire situation analysis and judgment module for subsequent fire situation analysis and judgment, ensuring that the fire detection threshold can be updated in time according to environmental changes to improve detection accuracy.

[0088] The specific steps of calculating the threshold value of fire detection by the dynamic algorithm are as follows:

[0089] Step 1: Receive the processed temperature data T from the data processing module m (t) and the environmental data of the environmental data collection unit, where T m (t) represents the real-time temperature data at time t, T e (t) represents the ambient temperature at time t, H(t) represents the ambient humidity, and L(t) represents the equipment load;

[0090] Step 2: By calculating the difference between the temperature data and the ambient temperature, ensure that the interference of the external ambient temperature change is eliminated when detecting the fire. The specific formula is: ΔT(t) = T m (t)-T e (t), where ΔT(t) is the temperature difference at time t, T m (t) is the temperature data detected by the temperature sensing cable module, T e (t) is the ambient temperature;

[0091] Step 3: Dynamically adjust the temperature threshold T for fire detection based on real-time environmental conditions dyn (t), the adjustment formula is: T dyn (t) = T th ×(1+α·L(t))-β·H(t), where, T dyn(t) is the dynamic threshold at time t, T th is the initially set fire detection temperature threshold, α is the load adjustment coefficient, L(t) is the equipment load at time t, β is the humidity adjustment coefficient, and H(t) is the ambient humidity at time t;

[0092] Step 4: To further optimize the detection threshold, the threshold calculation unit is calibrated based on historical environmental data; assuming the historical average ambient temperature is Then the modified dynamic threshold T final (t) Based on the difference between the current environment and the historical environment, the correction formula is: Among them, γ is the historical adjustment coefficient, is the average ambient temperature during the historical period, T e (t) is the current ambient temperature at time t. The corrected dynamic threshold can further adapt to environmental changes and reduce the probability of false alarms and missed alarms;

[0093] Step 5: Set the adjusted fire detection threshold T dyn (t) transmitted to the fire situation analysis and judgment module; the above steps accurately adjust the fire detection threshold by combining conditions such as equipment load and environmental humidity, and optimize the adjustment algorithm based on historical data to ensure that the fire detection threshold can adapt to dynamic changes in the environment in real time, significantly improving the sensitivity and accuracy of fire detection and reducing the probability of false alarms and missed alarms.

[0094] The fire situation analysis and judgment module includes a data analysis unit, a fire situation judgment unit and an alarm signal generation unit, wherein:

[0095] Data analysis unit: used to receive the adjusted fire detection threshold and real-time temperature data of the adaptive fire detection module, and analyze the time series of the temperature data according to the preset fire identification algorithm to determine the rate of temperature change and its relationship with the threshold, specifically, to evaluate whether there is an abnormal temperature change pattern by monitoring the temperature rise rate and whether the temperature continues to exceed the threshold;

[0096] Fire judgment unit: connected to the data analysis unit. After the data analysis unit completes the analysis of the temperature data, the fire judgment unit makes a final judgment on the result according to the preset rules, and analyzes whether the temperature change meets the triggering conditions in the fire identification algorithm. Specifically, when the temperature rise rate reaches the preset threshold or the temperature exceeds the detection threshold for a predetermined time, it is judged as a fire;

[0097] Alarm signal generating unit: connected to the fire condition judgment unit. When the fire condition judgment unit confirms that the temperature data meets the fire condition conditions, the alarm signal generating unit immediately generates a fire alarm signal and transmits it to the fire extinguishing device control module through the data bus. The alarm signal contains relevant information for triggering the alarm, including the sensor location, current temperature data and triggering conditions, to ensure that the fire extinguishing device control module can respond quickly.

[0098] The data analysis unit specifically includes:

[0099] Receive data: first receive the adjusted fire detection threshold and real-time temperature data from the adaptive fire detection module for subsequent analysis;

[0100] Temperature change rate calculation: Perform time series analysis on the received temperature data, and calculate the temperature change rate by comparing the temperature values ​​at different time points to determine the rising or falling trend of the temperature;

[0101] Analysis of the relationship with the fire detection threshold: Compare the real-time temperature data with the adjusted fire detection threshold. When the real-time temperature exceeds the detection threshold and the temperature change rate exceeds the preset rate threshold, it is preliminarily determined to be a temperature anomaly.

[0102] Time series analysis: After the temperature change rate and temperature exceeding the threshold conditions are met, the data analysis unit will perform time series analysis on the temperature data to confirm whether the temperature continues to exceed the detection threshold for more than a predetermined time range. If the temperature exceeds the threshold for more than a predetermined time, it is determined to be a potential fire;

[0103] Output analysis results: The analysis results of the temperature change rate, current temperature data and duration of the temperature exceeding the threshold are output to the fire situation judgment unit for subsequent fire situation judgment.

[0104] The calculation steps for time series analysis of temperature data based on the fire identification algorithm are as follows:

[0105] Step 1: The data analysis unit first receives the adjusted fire detection threshold T of the adaptive fire detection module final (t) and real-time temperature data T m (t), where T dyn (t) is the dynamic fire detection threshold at time t, T m (t) is the real-time temperature data at time t;

[0106] Step 2: The data analysis unit calculates the rate of temperature change by analyzing the time series of temperature data, assuming that the temperature change between time points t1 and t2 (where t2>t1) is ΔT=T m (t2)-T m (t1), the temperature change rate RT (t) can be defined as: Among them, R T (t) is the temperature change rate at time t, which indicates the rate of change of temperature over time and is used to determine the trend of temperature rise or fall;

[0107] Step 3: By comparing the real-time temperature data T m (t) and the adjusted fire detection threshold T final (t) is analyzed, when the real-time temperature data T m (t) exceeds the fire detection threshold T final (t) and the temperature change rate R T (t) is greater than the preset rate threshold R th When the temperature is abnormal, it is preliminarily determined; otherwise, the temperature is considered to be within the normal range. This step ensures that not only the temperature value itself is considered, but also the speed of temperature change is comprehensively analyzed;

[0108] Step 4: If the temperature change rate and the temperature exceeding the fire detection threshold are met, the data analysis unit will perform further time series analysis on the historical temperature data to confirm whether the temperature continues to exceed the fire detection threshold T final (t) a predetermined time Δt; if the temperature continues to exceed the threshold for time t s If the temperature exceeds the predetermined time Δt, it is further determined that the temperature change may be caused by a fire. This step continuously monitors the temperature data to avoid false triggering of the fire alarm due to short-term fluctuations. The above steps further expose the data analysis unit to accurately evaluate the temperature anomaly through time series analysis and temperature change rate calculation in combination with the fire detection threshold, thereby ensuring the sensitivity and reliability of fire detection. The system can not only detect whether the temperature exceeds the threshold, but also comprehensively analyze the temperature change rate to further reduce the possibility of false alarms.

[0109] The fire situation judgment unit specifically includes:

[0110] Receiving analysis results: receiving analysis results from the data analysis unit, the analysis results including real-time temperature data, temperature change rate, and duration of whether the temperature exceeds a fire detection threshold;

[0111] Temperature rise rate determination: Analyze the temperature change rate to determine whether the actual temperature change rate exceeds the preset rise rate threshold; if the temperature change rate exceeds the preset rate standard, it is preliminarily determined that the temperature change is abnormal;

[0112] Temperature duration determination: further determine whether the temperature exceeds the fire detection threshold for a predetermined period of time; if the temperature exceeds the detection threshold for a predetermined period of time, it is considered that a fire exists;

[0113] Final fire determination: Fire determination is based on two conditions. If the temperature change rate exceeds the preset threshold, or the temperature exceeds the fire detection threshold for a period of time that exceeds the preset time, it is finally determined to be a fire.

[0114] Output fire situation judgment result: After completing the fire situation judgment, the fire situation judgment unit outputs the result to the alarm signal generation unit.

[0115] The specific calculation steps of the fire situation judgment unit are as follows:

[0116] Step 1: The temperature change rate R T (t) is used for determination, and the preset temperature rise rate threshold is set as: R T (t)>R th , where R T (t) is the temperature change rate at time t, R th is a preset rate threshold;

[0117] Step 2: Further determine whether the temperature continues to exceed the fire detection threshold. Set the detection threshold as T dyn (t), and the predetermined time is Δt, when the temperature data T m (t) exceeds the threshold T dyn (t) and lasts for more than the predetermined time Δt, it is determined that there may be a fire. The formula is: T m (t)>T dyn (t) and t s >Δt, where T m (t) is the real-time temperature data, T dyn (t) is the dynamic fire detection threshold, t s is the duration that the temperature exceeds the threshold, and Δt is the preset duration threshold;

[0118] Step 3: When the temperature rise rate R is met T (t) exceeds the rate threshold R th or temperature T m (t) exceeds the fire detection threshold T dyn (t) and duration t s When the preset time Δt is exceeded, the fire judgment unit finally determines that it is a fire; the above steps can accurately judge the occurrence of fire based on the temperature change rate and the duration exceeding the fire detection threshold. The multi-condition judgment mechanism effectively reduces false alarms and missed alarms, and improves the reliability and response speed of fire detection.

[0119] The fire extinguishing device control module includes a starting unit, an execution unit and a monitoring unit; wherein:

[0120] Start unit: used to receive the fire alarm signal from the fire analysis and judgment module. When the fire judgment unit determines that there is a fire and generates an alarm signal, the start unit responds immediately and sends a start command to the execution unit to ensure that the fire extinguishing operation can be carried out quickly;

[0121] Execution unit: connected to the start unit, used to automatically activate the fire extinguishing device after receiving the start command. The execution unit can select the most corresponding fire extinguishing equipment according to the location information, temperature data and trigger conditions in the fire alarm signal, and control the release of the fire extinguishing agent and the operation process according to the preset fire extinguishing strategy;

[0122] Monitoring unit: connected to the execution unit, used to monitor the operating status of the fire extinguishing device in real time during the fire extinguishing operation to ensure the continuity and effectiveness of the fire extinguishing operation. The monitoring unit records the data during the fire extinguishing process, including the release amount of the fire extinguishing agent, the operation duration and the equipment status, and feeds back the fire extinguishing results to the fire analysis and judgment module after the fire extinguishing is completed or in an abnormal situation; through the coordinated action of the starting unit, the execution unit and the monitoring unit, the fire extinguishing device control module can quickly start the fire extinguishing device to perform the fire extinguishing operation after receiving the fire alarm signal, and monitor the fire extinguishing process in real time to ensure the effectiveness and timeliness of the fire extinguishing operation.

[0123] The power failure protection module includes a power monitoring unit, a backup power unit and a switching control unit; wherein:

[0124] Power supply monitoring unit: used to monitor the working status of the external power supply in real time. When the external power supply is cut off or the voltage is abnormal, the power supply monitoring unit can identify the power supply abnormality and transmit the detected power supply status information to the switching control unit to trigger the start-up of the backup power supply;

[0125] Backup power supply unit: connected to the switching control unit to provide emergency power supply to the system when the external power supply is interrupted; the backup power supply unit includes a set of high-capacity batteries, which can provide continuous power supply to the cable-type temperature sensing cable module, data processing module, adaptive fire detection module, fire analysis and judgment module and fire extinguishing device control module in the event of an external power outage, ensuring the normal operation of the system;

[0126] Switching control unit: connected to the power monitoring unit and the backup power unit, used to immediately switch from the external power supply to the backup power supply unit when an external power interruption or abnormality is detected. The switching process is completed in milliseconds to ensure that the system has uninterrupted power supply when the external power supply is interrupted, and automatically switches back to the main power supply after the external power supply returns to normal, so as to maintain the long-term stable operation of the system; through the cooperation of the power monitoring unit, the backup power supply unit and the switching control unit, the power failure protection module can quickly switch to the backup power supply in the event of an external power interruption, ensure the normal operation of each module of the system, and ensure automatic switching back after the power is restored to ensure the continuity and stability of the system.

[0127] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0128] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cable-type linear independent temperature sensing terminal, characterized in that: It includes cable-type temperature sensing cable module, data processing module, adaptive fire detection module, fire analysis and judgment module, fire extinguishing device control module and power failure protection module; among which: Cable-type temperature sensing cable module: includes multiple temperature sensors, which are distributed in different positions along the electrical cabinet in the form of cables, used to detect temperature data at different positions and transmit the detected data to the data processing module; Data processing module: connected to the cable-type temperature sensing cable module, used to receive the temperature data transmitted by the temperature sensing cable module, and perform data conversion and formatting processing on it; Adaptive fire detection module: receives the temperature data processed by the data processing module, dynamically adjusts the fire detection threshold according to environmental conditions, enhances the accuracy of fire detection, and transmits the adjusted detection threshold to the fire analysis and judgment module; Fire analysis and judgment module: Based on the adjusted detection threshold, the module analyzes the data according to the preset fire recognition algorithm to determine whether a fire exists, and generates an alarm signal when a fire is detected and transmits it to the fire extinguishing device control module; Fire extinguishing device control module: used to receive the fire alarm signal from the fire analysis and judgment module, automatically start the fire extinguishing device to perform the fire extinguishing operation, and monitor the fire extinguishing process; Power failure protection module: used to provide backup power when the external power supply is interrupted to ensure the continuous operation of the cable-type temperature sensing cable module, data processing module, adaptive fire detection module, fire analysis and judgment module and fire extinguishing device control module.

2. A cable-type linear independent temperature sensing terminal according to claim 1, characterized in that: The cable-type temperature-sensing cable module includes a temperature sensor unit, a cable distribution unit and a data transmission unit; wherein: Temperature sensor unit: including multiple temperature sensors, which are installed along the four walls, top and bottom inner surfaces of the electrical cabinet, and around the heating equipment according to a preset route; the specific route is to extend from the bottom of the electrical cabinet upward to the top, forming a closed path around the inner wall of the electrical cabinet, and additional sensors are added in each corner and area close to high-temperature equipment to accurately monitor temperature data at different locations; Cable distribution unit: According to the equipment layout and temperature distribution in the electrical cabinet, cables are arranged along the edge of the electrical cabinet and the area around the equipment. The specific layout rules are as follows: the cables are distributed in a grid shape around the electrical cabinet, with one horizontal cable every 50 cm and vertical cables staggered every 50 cm, ensuring that each sensor covers all the predetermined temperature monitoring points in the electrical cabinet through cable connection, ensuring comprehensive collection of temperature data; Data transmission unit: connected to the temperature sensor unit, used to transmit the detected temperature data to the data processing module in real time through mesh-distributed cables.

3. A cable-type linear independent temperature sensing terminal according to claim 1, characterized in that: The data processing module includes a data receiving unit, a data conversion unit and a data formatting unit; wherein: Data receiving unit: used to receive temperature data transmitted by the cable-type temperature-sensing cable module. The temperature data is an analog signal collected in real time by multiple temperature sensors in the temperature-sensing cable. The data receiving unit receives the analog signal through a standard data transmission protocol to ensure the integrity of the data; Data conversion unit: used to receive analog signals and convert them into corresponding digital signals. During the data conversion process, an analog-to-digital converter is used to convert the analog signal of each temperature sensor into a processable digital signal; Data formatting unit: connected to the data conversion unit, used to rearrange and standardize the digital signal according to a predetermined data format to ensure that all data are uniformly encoded in a preset format. The specific format includes data source identification, timestamp, temperature value and its corresponding sensor location identification.

4. A cable-type linear independent temperature sensing terminal according to claim 1, characterized in that: The adaptive fire detection module includes an environmental data acquisition unit, a threshold calculation unit and a threshold transmission unit; wherein: Environmental data acquisition unit: used to collect environmental parameters in the electrical cabinet in real time, including temperature, humidity and equipment operating load conditions, and transmit the collected environmental data to the threshold calculation unit for dynamic calculation; Threshold calculation unit: connected to the environmental data acquisition unit and the data processing module, used to receive the processed temperature data and environmental data, and calculate the threshold of fire detection according to the environmental conditions through a preset dynamic algorithm; Threshold transmission unit: connected to the threshold calculation unit, used to transmit the dynamically adjusted fire detection threshold to the fire analysis and judgment module. The transmission process is carried out through the internal data bus to ensure the integrity and real-time nature of the data during the transmission process.

5. A cable-type linear independent temperature sensing terminal according to claim 4, characterized in that: The threshold calculation unit comprises: Receiving data: The threshold calculation unit receives processed temperature data and environmental data, wherein the environmental data includes current ambient temperature, humidity, and equipment load; Temperature difference calculation: By calculating the difference between the temperature data and the ambient temperature, the interference caused by the change of the external ambient temperature is eliminated; Dynamic threshold adjustment: Based on real-time environmental data, the initial fire detection temperature threshold is dynamically adjusted according to the equipment load and ambient humidity. When the equipment load increases, the temperature threshold for fire detection increases accordingly; when the ambient humidity increases, the temperature threshold decreases to improve the sensitivity of fire detection. Historical data comparison and adjustment: Optimize and adjust the detection threshold based on historical environmental data. By comparing the current environmental data with the historical average environmental data, the threshold of fire detection is corrected to reduce false alarms and missed alarms. Final output: The adjusted and corrected fire detection threshold is output to the fire situation analysis and judgment module for subsequent fire situation analysis and judgment.

6. A cable-type linear independent temperature sensing terminal according to claim 1, characterized in that: The fire situation analysis and judgment module includes a data analysis unit, a fire situation judgment unit and an alarm signal generation unit, wherein: Data analysis unit: used to receive the adjusted fire detection threshold and real-time temperature data of the adaptive fire detection module, and analyze the time series of the temperature data according to the preset fire identification algorithm to determine the rate of temperature change and its relationship with the threshold; Fire judgment unit: connected to the data analysis unit. After the data analysis unit completes the analysis of the temperature data, the fire judgment unit makes a final judgment on the result according to the preset rules, and analyzes whether the temperature change meets the triggering conditions in the fire identification algorithm. Specifically, when the temperature rise rate reaches the preset threshold or the temperature exceeds the detection threshold for a predetermined time, it is judged as a fire; Alarm signal generating unit: connected to the fire condition judgment unit. When the fire condition judgment unit confirms that the temperature data meets the fire condition conditions, the alarm signal generating unit immediately generates a fire alarm signal and transmits it to the fire extinguishing device control module through the data bus. The alarm signal contains relevant information for triggering the alarm, including the sensor location, current temperature data and trigger conditions.

7. A cable-type linear independent temperature sensing terminal according to claim 6, characterized in that: The data analysis unit specifically includes: Receive data: first receive the adjusted fire detection threshold and real-time temperature data from the adaptive fire detection module for subsequent analysis; Temperature change rate calculation: Perform time series analysis on the received temperature data, and calculate the temperature change rate by comparing the temperature values ​​at different time points to determine the rising or falling trend of the temperature; Analysis of the relationship with the fire detection threshold: Compare the real-time temperature data with the adjusted fire detection threshold. When the real-time temperature exceeds the detection threshold and the temperature change rate exceeds the preset rate threshold, it is preliminarily determined to be a temperature anomaly. Time series analysis: After the temperature change rate and temperature exceeding the threshold conditions are met, the data analysis unit will perform time series analysis on the temperature data to confirm whether the temperature continues to exceed the detection threshold for more than a predetermined time range. If the temperature exceeds the threshold for more than a predetermined time, it is determined to be a potential fire; Output analysis results: The analysis results of the temperature change rate, current temperature data and duration of the temperature exceeding the threshold are output to the fire situation judgment unit for subsequent fire situation judgment.

8. A cable-type linear independent temperature sensing terminal according to claim 7, characterized in that: The fire situation judgment unit specifically includes: Receiving analysis results: receiving analysis results from a data analysis unit, the analysis results including real-time temperature data, temperature change rate, and duration of whether the temperature exceeds a fire detection threshold; Temperature rise rate determination: Analyze the temperature change rate to determine whether the actual temperature change rate exceeds the preset rise rate threshold; if the temperature change rate exceeds the preset rate standard, it is preliminarily determined that the temperature change is abnormal; Temperature duration determination: Determine whether the temperature has exceeded the fire detection threshold for a predetermined period of time; if the temperature continues to exceed the detection threshold for more than a predetermined period of time, it is considered that a fire exists; Final fire determination: Fire determination is based on two conditions. If the temperature change rate exceeds the preset threshold, or the temperature exceeds the fire detection threshold for a period of time that exceeds the preset time, it is finally determined to be a fire. Output fire situation judgment result: After completing the fire situation judgment, the fire situation judgment unit outputs the result to the alarm signal generation unit.

9. A cable-type linear independent temperature sensing terminal according to claim 1, characterized in that: The fire extinguishing device control module includes a starting unit, an execution unit and a monitoring unit; wherein: Start unit: used to receive the fire alarm signal from the fire analysis and judgment module. When the fire judgment unit determines that there is a fire and generates an alarm signal, the start unit immediately responds and sends a start instruction to the execution unit; Execution unit: connected to the starting unit, used to automatically activate the fire extinguishing device after receiving the starting command; Monitoring unit: connected to the execution unit, used to monitor the operating status of the fire extinguishing device in real time during the fire extinguishing operation. The monitoring unit records the data during the fire extinguishing process, including the release amount of the fire extinguishing agent, the operation duration and the equipment status, and feeds back the fire extinguishing results to the fire situation analysis and judgment module when the fire extinguishing is completed or in an abnormal situation.

10. A cable-type linear independent temperature sensing terminal according to claim 1, characterized in that: The power failure protection module includes a power monitoring unit, a backup power supply unit and a switching control unit; wherein: Power supply monitoring unit: used to monitor the working status of the external power supply in real time. When the external power supply is powered off or the voltage is abnormal, the power supply monitoring unit can identify the power supply abnormality and transmit the detected power supply status information to the switching control unit; Backup power supply unit: connected to the switching control unit to provide emergency power supply to the system when the external power supply is interrupted; the backup power supply unit includes a group of high-capacity batteries, which can provide continuous power supply to the cable-type temperature sensing cable module, data processing module, adaptive fire detection module, fire analysis and judgment module and fire extinguishing device control module in the event of an external power outage, thereby ensuring the normal operation of the system; Switching control unit: connected to the power monitoring unit and the backup power unit, used to immediately switch from the external power supply to the backup power supply unit when an external power interruption or abnormality is detected. The switching process is completed in milliseconds, ensuring that the system has uninterrupted power supply when the external power supply is interrupted, and automatically switches back to the main power supply after the external power supply returns to normal.

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