Device management method and system based on sensor data compression transmission

Abstract

The present invention relates to the field of equipment management technology, and discloses an equipment management method and system based on sensor data compression transmission. A device management method based on sensor data compression transmission includes the following steps: S1, dividing the underground parking garage into several sub-areas according to the installation position of the sprinkler heads, ensuring that the number of sprinkler heads in each sub-area is the same; S2, obtaining the environmental status data and vehicle flow data of each sub-area based on sensors and video monitoring; S3, compressing the environmental status data and vehicle flow data in the same sub-area and transmitting them to a data terminal for analysis and processing, and judging the safety status of the sub-area based on the results of the analysis and processing. The present invention not only detects the environmental status in the area, but also takes into account the impact of exhaust emissions on the ambient temperature when the car is in motion, thereby improving the timeliness of the action of the fire sprinkler equipment after a fire occurs.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment management, and in particular to an equipment management method and system based on sensor data compression transmission. Background Art

[0002] Data compression technology is the art of representing signals using the fewest possible digital bits. Because digital multimedia information, especially digital video and audio signals, is extremely large in data volume, its practical application is limited without effective compression. Therefore, data compression has become a key, universal technology in today's digital communications, broadcasting, storage, and multimedia entertainment. Data compression technology, combined with sensors, is widely used in various equipment management systems, such as environmental monitoring in fire safety systems. Through data compression, more environmental data can be collected and then compressed, transmitted, and analyzed comprehensively.

[0003] Fire sprinkler equipment is a widely used fixed firefighting facility. Depending on its function, it can be divided into two types: manual control and automatic control. The system is equipped with an alarm device that can automatically sound an alarm when a fire occurs. The automatically controlled fire sprinkler system can automatically spray and work in conjunction with other firefighting facilities, thus effectively controlling and extinguishing early fires. For application environments that require a fire sprinkler system with a wide coverage range, such as underground parking lots, closed sprinkler systems are often used. However, the automatic control method of this sprinkler system requires the temperature to reach a high temperature of 68°C before the sprinkler system will start to spray. For underground garages, which have low temperatures year-round, the fire may have already occurred by the time the room temperature rises to 68°C. Therefore, for the fire management of underground garages, the existing sprinkler equipment operation management has the problem of untimely automatic control of the sprinkler operation. Summary of the Invention

[0004] The purpose of the present invention is to provide a device management method and system based on sensor data compression transmission to solve the following technical problems:

[0005] How to solve the problem of untimely automatic control of fire sprinkler equipment in underground garages.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A device management method based on sensor data compression transmission includes the following steps:

[0008] S1. Divide the underground parking garage into several sub-areas based on the installation locations of the sprinkler heads, ensuring that each sub-area has the same number of sprinkler heads.

[0009] S2, based on sensors and video surveillance, obtains environmental status data and traffic flow data of each sub-area;

[0010] S3. compressing the environmental status data and vehicle flow data within the same sub-area and transmitting them to a data terminal for analysis and processing, and determining the safety status within the sub-area based on the analysis and processing results;

[0011] When the safety status in a sub-area does not meet the safety standards, the sprinkler heads in the sub-area are controlled to spray water according to the judgment results, and a safety warning is issued to the entire underground garage.

[0012] In one embodiment, the environmental status data includes:

[0013] Temperature variation data T(t) obtained based on the temperature sensor;

[0014] The smoke concentration change data G(t) obtained by the smoke sensor over time;

[0015] Based on live audio data acquired by sound sensors.

[0016] In one embodiment, the analysis and processing process of the data terminal is:

[0017] Obtain the time interval [t l , t r ];

[0018] By formula Calculate the temperature rise evaluation value T rise (lr) ;

[0019] Among them, T0(t) is the temperature change data under normal conditions, Q (lr) For the time interval [t l , t r ] the total number of vehicles passing through the corresponding sub-area, F[Q (lr) ] is the preset standard value, γ is the preset coefficient;

[0020] The temperature evaluation value T rise (lr) With the preset error value To compare:

[0021] when When the security status in the sub-area is determined;

[0022] when , continue to select the next interval where the k value is continuously greater than zero and repeat the above analysis operation.

[0023] In one embodiment, the process of determining the security status in the sub-area is as follows:

[0024] to [t l , t r ] performs speech recognition on the audio data obtained in the speech recognition, compares the speech information obtained by the speech recognition with the preset warning keyword group, and obtains the warning coefficient ρ corresponding to the audio data segment according to the comparison result;

[0025] If the voice message contains the preset warning keyword group, then ρ>1;

[0026] If the voice message does not contain the preset warning keyword group, then ρ = 1;

[0027] By formula Calculate the fire risk value V risk , where ε1 and ε2 are preset coefficients;

[0028] If the fire risk value V risk Exceeding the risk threshold V th , the sprinkler heads in the corresponding area are controlled to spray water, and a safety warning is issued to the entire underground parking garage based on the buzzer.

[0029] In one embodiment, the method further includes:

[0030] S4. After the sprinkler head in any sub-area sprays water, the CO2 concentration change data C(t) at the ventilation outlet of the underground garage is obtained based on the CO2 detector;

[0031] Continue to obtain the temperature change data T of the sub-area where the water spraying action has been performed w (t);

[0032] Data C(t) and data T w (t) Compress and transmit the data to the data terminal for comprehensive data analysis, and establish a fire blocking strategy based on the results of the comprehensive data analysis.

[0033] In one embodiment, the fire blocking strategy includes: controlling sprinkler heads in other sub-areas adjacent to the sub-area that has already performed the water spraying action to perform auxiliary water spraying.

[0034] In one embodiment, the process of comprehensive data analysis includes:

[0035] Judgment data T w (t) corresponds to the shape of the smoothed curve:

[0036] If the curve shows an overall downward trend, there is no need to establish a fire blocking strategy;

[0037] If the curve still shows an upward trend, take the right endpoint t of the time interval corresponding to the upward curve i, and make the following judgments:

[0038] like No fire blocking strategy is required

[0039] like Then through the formula The risk factor E of fire spread is calculated and compared with the preset threshold E th For comparison:

[0040] If E≤E th , then no fire blocking strategy will be established;

[0041] If E>E th , then establish a fire blocking strategy.

[0042] A device management system based on sensor data compression transmission, the system comprising:

[0043] Data acquisition module, used to collect environmental status data and vehicle flow data;

[0044] Communication module, used to compress and transmit environmental status data and vehicle flow data collected in the same sub-area;

[0045] The data terminal is used to receive the data information output by the communication module and analyze and process the data information;

[0046] The control module is used to control the water spraying action of the sprinkler head in the sub-area according to the results of the analysis and processing.

[0047] Beneficial effects of the present invention:

[0048] (1) The present invention not only detects the environmental conditions in the area, but also takes into account the impact of exhaust emissions from vehicles on the ambient temperature. Therefore, it can obtain a variety of parameter data that may affect fire judgment. Combined with data compression and transmission technology, the parameter data can be quickly transmitted to the data terminal for processing and analysis, thereby improving the timeliness of the fire sprinkler system after a fire occurs.

[0049] (2) The present invention also provides a method for blocking the spread of fire, which only requires controlling the sprinkler heads in other sub-areas adjacent to the sub-area that has already sprayed water to perform auxiliary water spraying. The other sub-areas closest to the center of the fire are sprayed in advance, and a water mist encirclement is formed around the center of the fire, thereby achieving the effect of blocking the fire from continuing to spread to other sub-areas. Through comprehensive analysis and control of multiple parameter data, it is possible to accurately determine whether it is necessary to establish a fire blocking strategy, so that the strategy can not only hinder the spread of fire, but also avoid unnecessary misspraying, reduce the waste of water resources, and provide a good field of view for the evacuation of vehicles outside the fire area. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The present invention will be further described below with reference to the accompanying drawings.

[0051] Figure 1 A flowchart of the steps of the device management method based on sensor data compression transmission according to the present invention;

[0052] Figure 2 This is a schematic block diagram of the device management system based on sensor data compression transmission according to the present invention. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0054] See also Figure 1 As shown, the present invention is a device management method based on sensor data compression transmission, comprising the following steps:

[0055] S1. Divide the underground parking garage into several sub-areas based on the installation locations of the sprinkler heads, ensuring that each sub-area has the same number of sprinkler heads.

[0056] S2, based on sensors and video surveillance, obtains environmental status data and traffic flow data of each sub-area;

[0057] S3. compressing the environmental status data and vehicle flow data within the same sub-area and transmitting them to a data terminal for analysis and processing, and determining the safety status within the sub-area based on the analysis and processing results;

[0058] When the safety status in a sub-area does not meet the safety standards, the sprinkler heads in the sub-area are controlled to spray water according to the judgment results, and a safety warning is issued to the entire underground garage.

[0059] Through the above-described technical solution, this embodiment manages and controls the fire sprinkler equipment in an underground parking garage based on environmental conditions and traffic flow, enabling more timely detection of fires. Specifically, the underground parking garage is first divided into several sub-areas, ensuring that each sub-area has the same number of sprinkler heads, that is, the number of sprinkler heads per unit area. Then, environmental condition data and traffic flow data for each sub-area are acquired based on sensors and video surveillance. This method allows for independent monitoring and control of the conditions of each sub-area. Therefore, when a fire occurs in a sub-area, sprinkler fire suppression can be promptly implemented at the fire's origin without significantly impacting other sub-areas. The specific control process involves compressing the environmental condition data and traffic flow data and transmitting them to a data terminal for analysis and processing. Based on the analysis and processing results, the safety status of the sub-area is determined. If the safety status of a sub-area does not meet safety standards, the sprinkler heads in that sub-area are controlled to spray water based on the determination results.

[0060] It should be noted that the above technical solution not only detects the environmental conditions in the area, but also takes into account the impact of exhaust emissions from cars on the ambient temperature when they are moving. Therefore, it can obtain a variety of parameter data that may affect fire judgment. Combined with data compression and transmission technology, the parameter data can be quickly transmitted to the data terminal for processing and analysis, thereby improving the timeliness of the action of fire sprinkler equipment after a fire occurs.

[0061] The environmental status data includes:

[0062] Temperature variation data T(t) obtained based on the temperature sensor;

[0063] The smoke concentration change data G(t) obtained by the smoke sensor over time;

[0064] Based on live audio data acquired by sound sensors.

[0065] Through the above technical solution, this embodiment provides specific data representing environmental conditions and a corresponding method for obtaining the data. It should be noted that the temperature sensor and smoke sensor respectively obtain the temperature and smoke concentration conditions within the sub-area, which directly reflect the occurrence of a fire. The audio data obtained by the sound sensor requires the recognition of voice information in the audio to indirectly determine whether a fire has occurred at the scene.

[0066] The analysis and processing process of the data terminal is as follows:

[0067] Obtain the time interval [t l , t r ];

[0068] By formula Calculate the temperature rise evaluation value T rise (lr) ;

[0069] Among them, T0(t) is the temperature change data under normal conditions, Q (lr) For the time interval [t l , t r ] the total number of vehicles passing through the corresponding sub-area, F[Q (lr) ] is the preset standard value, γ is the preset coefficient;

[0070] The temperature evaluation value T rise (lr) With the preset error value To compare:

[0071] when When the security status in the sub-area is determined;

[0072] when , continue to select the next interval where the k value is continuously greater than zero and repeat the above analysis operation.

[0073] Through the above technical solution, this embodiment provides a specific process for the data terminal to analyze and process various compressed and transmitted data. Specifically, the time interval [t l , t r ], and then through the formula Calculate the temperature rise evaluation value T rise (lr) , where T0(t) is the temperature variation data under normal conditions, which can be obtained based on the temperature variation curve fitted under the condition where no vehicles are passing and no fire occurs, Q (lr) For the time interval [t l , t r ] the total number of vehicles passing through the corresponding sub-area, F[Q (lr) ] is the preset standard value, and γ is the preset coefficient. It should be noted that in the above formula It directly reflects the difference between the actual total change of ambient temperature and the total change of ambient temperature under normal circumstances within the preset time period. The ratio of the number of vehicles passing through the corresponding area during the time period, so the temperature rise evaluation value T rise (lr) The larger the value, the faster the temperature in the sub-area rises, and the greater the possibility of fire. When the security status of the sub-area is determined, it is necessary to judge the security status of the sub-area.

[0074] The process of judging the security status in this sub-area is as follows:

[0075] to [t l , t r ] performs speech recognition on the audio data obtained in the speech recognition, compares the speech information obtained by the speech recognition with the preset warning keyword group, and obtains the warning coefficient ρ corresponding to the audio data segment according to the comparison result;

[0076] If the voice message contains the preset warning keyword group, then ρ>1;

[0077] If the voice message does not contain the preset warning keyword group, then ρ = 1;

[0078] By formula Calculate the fire risk value V risk , where ε1 and ε2 are preset coefficients;

[0079] If the fire risk value V risk Exceeding the risk threshold V th , the sprinkler heads in the corresponding area are controlled to spray water, and a safety warning is issued to the entire underground parking garage based on the buzzer.

[0080] Through the above technical solution, this embodiment provides a specific process for judging the security status in the sub-area. First, the audio information needs to be processed, specifically: l , t r ] to perform speech recognition on the audio data obtained in the audio data, and compare the speech information obtained by speech recognition with the preset warning keyword group. According to the comparison result, the warning coefficient ρ corresponding to the audio data segment is obtained, where the warning keyword group can be set to words such as "fire" and "firefighting". Then, the formula Calculate the fire risk value V risk , where ε1 and ε2 are preset coefficients; the above technical solution can more accurately determine whether a fire has occurred through analysis of temperature data, smoke concentration data and voice judgment, and does not require the temperature to reach a sufficient high level to determine it as a fire. Therefore, the occurrence of a fire can be determined earlier.

[0081] The method further comprises:

[0082] S4. After the sprinkler head in any sub-area sprays water, the CO2 concentration change data C(t) at the ventilation outlet of the underground garage is obtained based on the CO2 detector;

[0083] Continue to obtain the temperature change data T of the sub-area where the water spraying action has been performed w (t);

[0084] Data C(t) and data T w (t) Compress and transmit the data to the data terminal for comprehensive data analysis, and establish a fire blocking strategy based on the results of the comprehensive data analysis.

[0085] Through the above technical solution, a method for preventing the spread of fire is provided for the situation where a fire has been confirmed and water has been sprayed to extinguish the fire in the sub-area where the fire has occurred. Specifically, the CO2 concentration change data C(t) at the ventilation opening of the underground garage is obtained based on the CO2 detector; the fire produces a lot of CO2, so the CO2 concentration is detected separately. If the CO2 concentration at the ventilation opening is high, it not only reflects that the fire is large, but also reflects that the ventilation effect at this stage is good, which has promoted the spread of the fire. In addition, the temperature change data T of the sub-area where the water spraying action has been carried out is continued to be obtained. w (t); data C(t) and data T w (t) compress and transmit to the data terminal for comprehensive data analysis, and establish a fire blocking strategy based on the results of the comprehensive data analysis. w (t) Directly reflects the effect of sprinkler fire extinguishing in the sub-area where the fire occurs.

[0086] The fire blocking strategy includes: controlling the sprinkler heads in other sub-areas adjacent to the sub-area where the water spraying action has been performed to perform auxiliary water spraying.

[0087] The above technical solution provides a simple method for preventing the spread of fire. It only requires controlling sprinkler heads in other sub-areas adjacent to the one already spraying water to provide auxiliary water spraying. By pre-spraying the sub-areas closest to the center of the fire, a water mist ring is formed around the fire center, effectively preventing the fire from spreading to other sub-areas.

[0088] The process of comprehensive data analysis includes:

[0089] Judgment data T w (t) corresponds to the shape of the smoothed curve:

[0090] If the curve shows an overall downward trend, there is no need to establish a fire blocking strategy;

[0091] If the curve still shows an upward trend, take the right endpoint t of the time interval corresponding to the upward curve i , and make the following judgments:

[0092] like There is no need to establish a fire blocking strategy;

[0093] like Then through the formula The risk factor E of fire spread is calculated and compared with the preset threshold E th For comparison:

[0094] If E≤E th , then no fire blocking strategy will be established;

[0095] If E>E th , then establish a fire blocking strategy.

[0096] Through the above technical solution, this embodiment provides data C(t) and data T w (t) The specific method of comprehensive analysis is to first analyze the data T w (t) Make an overall judgment on the shape of the smoothed curve. If the curve directly shows that the effect of sprinkler fire extinguishing is significant, there is no need to establish a fire blocking strategy. Otherwise, T w (t) Carry out specific analysis, if There is no need to establish a fire blocking strategy; if Then through the formula The risk factor E of fire spread is calculated and compared with the preset threshold E th Compare: If E≤E th , then no fire blocking strategy is established; if E>E th , then establish a fire blocking strategy. It should be noted that if Indicates: Although the temperature is still in the rising stage, T w The (t) curve is an ascending convex curve, which reflects that it is becoming increasingly difficult to increase the temperature, and indirectly indicates that the sprinkler fire extinguishing in the corresponding sub-interval has a certain effect. This means that not only has the temperature risen, but the sprinkler fire extinguishing in the corresponding sub-interval has almost no effect in cooling the temperature. Therefore, it is necessary to further determine whether to establish a fire blocking strategy. Specifically, the temperature factor and the CO2 concentration factor are comprehensively analyzed to obtain the risk coefficient E of fire spread. If E exceeds the preset threshold, it can be determined that a fire blocking strategy needs to be established. Through multiple judgments by the above technical party, it can be accurately determined whether a fire blocking strategy needs to be established, so that the strategy can not only hinder the spread of fire, but also avoid unnecessary misspraying, reduce the waste of water resources, and provide a good field of view for the evacuation of vehicles outside the fire area.

[0097] See also Figure 2 As shown, a device management system based on sensor data compression transmission, the system includes:

[0098] Data acquisition module, used to collect environmental status data and vehicle flow data;

[0099] Communication module, used to compress and transmit environmental status data and vehicle flow data collected in the same sub-area;

[0100] The data terminal is used to receive the data information output by the communication module and analyze and process the data information;

[0101] The control module is used to control the water spraying action of the sprinkler head in the sub-area according to the results of the analysis and processing.

[0102] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A device management method based on sensor data compression transmission, characterized in that: The following steps are involved: S1. Divide the underground parking garage into several sub-areas based on the installation locations of the sprinkler heads, ensuring that each sub-area has the same number of sprinkler heads. S2, based on sensors and video surveillance, obtains environmental status data and traffic flow data of each sub-area; The environmental status data includes: temperature change data obtained by the temperature sensor over time , based on the smoke concentration change data obtained by the smoke sensor ), based on the on-site audio data obtained by the sound sensor; S3. compressing the environmental status data and vehicle flow data within the same sub-area and transmitting them to a data terminal for analysis and processing, and determining the safety status within the sub-area based on the analysis and processing results; The analysis and processing process of the data terminal is as follows: Get data The time interval during which the k value of the corresponding smoothed curve is continuously greater than zero ; By formula Calculate the temperature rise evaluation value ; in, is the temperature variation data over time under normal conditions, For the time interval The total number of vehicles passing through the corresponding sub-area, is the preset standard value. is the preset coefficient; Increase the temperature rating With the preset error value To compare: when When the security status in the sub-area is determined; when When , continue to select the next interval where the k value is continuously greater than zero and repeat the above analysis operation; When the safety status in a sub-area does not meet the safety standards, the sprinkler heads in the sub-area are controlled to spray water according to the judgment results, and a safety warning is issued to the entire underground garage.

2. The device management method based on sensor data compression transmission according to claim 1, characterized in that: The process of judging the security status in this sub-area is as follows: right The audio data obtained in the speech recognition is compared with the preset warning keyword group, and the warning coefficient corresponding to the audio data is obtained according to the comparison result. ; If the voice message contains the preset warning keyword group, then 1; If the voice message does not contain the preset warning keyword group, then =1; By formula Calculate the fire risk value ,in, 、 is the preset coefficient; If the fire risk value Exceeding risk threshold , the sprinkler heads in the corresponding area are controlled to spray water, and a safety warning is issued to the entire underground parking garage based on the buzzer.

3. The device management method based on sensor data compression transmission according to claim 1, characterized in that: The method further comprises: S4, after the sprinkler head in any sub-area performs water spraying, based on The detector obtains the ventilation hole of the underground garage Concentration change data over time ; Continue to obtain the temperature change data of the sub-area where the water spraying action has been performed over time ; The data and data The data is compressed and transmitted to the data terminal for comprehensive data analysis, and a fire blocking strategy is established based on the results of the comprehensive data analysis.

4. The device management method based on sensor data compression transmission according to claim 3, characterized in that: The fire blocking strategy includes: controlling the sprinkler heads in other sub-areas adjacent to the sub-area where the water spraying action has been performed to perform auxiliary water spraying.

5. The device management method based on sensor data compression transmission according to claim 4, characterized in that: The process of comprehensive data analysis includes: Judgment Data The shape of the corresponding smoothed curve is: If the curve shows an overall downward trend, there is no need to establish a fire blocking strategy; If the curve still shows an upward trend, take the right endpoint of the time interval corresponding to the upward curve , and make the following judgments: like , there is no need to establish a fire blocking strategy like , then by the formula Calculate the risk factor of fire spread , the risk factor With preset threshold For comparison: like , then no fire blocking strategy will be established; like , then establish a fire blocking strategy.

6. A device management system based on sensor data compression transmission, characterized in that: The system is used to execute the device management method based on sensor data compression transmission according to any one of claims 1 to 5, and the system includes: Data acquisition module, used to collect environmental status data and vehicle flow data; Communication module, used to compress and transmit environmental status data and vehicle flow data collected in the same sub-area; The data terminal is used to receive the data information output by the communication module and analyze and process the data information; The control module is used to control the water spraying action of the sprinkler head in the sub-area according to the results of the analysis and processing.

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