CN-122016729-A - Flue gas characteristic parameter wide-range measurement method and system based on multi-source data fusion

Abstract

The invention discloses a flue gas characteristic parameter wide-range measurement method and system based on multi-source data fusion, and relates to the technical field of flue gas observation data processing. Constructing a first scattering observation channel and a second scattering observation channel in a scattering cavity in a fire smoke collection channel, collecting first signal observation data of the first scattering observation channel and second signal observation data of the second scattering observation channel in parallel to form a multi-source observation set, performing quality evaluation on the multi-source observation set to obtain multi-source observation set evaluation information, performing joint judgment according to the multi-source observation set evaluation information to obtain a joint judgment result, further combining the multi-source observation set evaluation information to generate a channel connection candidate output index value, performing bias analysis to obtain bias information, performing trusted data analysis according to the bias information to obtain a trusted observation data set, processing based on the trusted observation data set to obtain smoke characteristic parameter measurement information, and improving stability and reliability of fire smoke monitoring.

Inventors

• LI XIAOBAI
• LIU RUICHEN
• ZHANG YINGCONG

Assignees

• 应急管理部沈阳消防研究所

Dates

Publication Date

20260512

Application Date

20260224

Claims (10)

1. 1. The flue gas characteristic parameter wide-range measurement method based on multi-source data fusion is characterized by comprising the following steps of: Constructing a first scattering observation channel and a second scattering observation channel in a scattering cavity in a fire smoke acquisition channel, and acquiring first signal observation data of the first scattering observation channel and second signal observation data of the second scattering observation channel in parallel to form a multi-source observation set in the scattering cavity; Performing quality evaluation on the multi-source observation set in the scattering cavity to obtain multi-source observation set evaluation information in the scattering cavity, and performing joint judgment according to the multi-source observation set evaluation information in the scattering cavity to obtain a joint judgment result in the scattering cavity; According to the combined judging result in the scattering cavity, combining the multisource observation set evaluation information to generate a channel connection candidate output index value in the scattering cavity; Performing deviation analysis on the channel connection candidate output index value in the scattering cavity to obtain deviation information in the scattering cavity, performing trusted data analysis according to the deviation information to obtain a trusted observation data set in the scattering cavity, and processing based on the trusted observation data set to obtain flue gas characteristic parameter measurement value information in the scattering cavity.
2. 2. The method for measuring the smoke characteristic parameters in a wide range based on multi-source data fusion according to claim 1, wherein the first signal observation data of the first scattering observation channel comprises a weak signal original response amplitude, a weak signal to noise ratio, a weak signal amplitude fluctuation coefficient and a weak signal saturation coefficient of the first scattering observation channel; The second signal observation data of the second scattering observation channel comprises a strong signal original response amplitude, a strong signal-to-noise ratio, a strong signal amplitude fluctuation coefficient and a strong signal saturation coefficient of the second scattering observation channel.
3. 3. The method for measuring the smoke characteristic parameters in a wide range based on multi-source data fusion according to claim 2, wherein the method for evaluating the quality of the multi-source observation set in the scattering cavity is as follows: According to the weak signal-to-noise ratio, the weak signal amplitude fluctuation coefficient and the weak signal saturation coefficient of the first scattering observation channel, comprehensively analyzing to obtain a first quality index value of the first scattering observation channel, wherein the first quality index value of the first scattering observation channel is used for comprehensively quantifying a quantification result of the signal measurement reliability of the first scattering observation channel by the weak signal-to-noise ratio, the weak signal amplitude fluctuation coefficient and the weak signal saturation coefficient; Comprehensively analyzing to obtain a second quality index value of the second scattering observation channel according to the strong signal-to-noise ratio, the strong signal amplitude fluctuation coefficient and the strong signal saturation coefficient of the second scattering observation channel, wherein the second quality index value of the second scattering observation channel is used for comprehensively quantifying the quantification result of the signal measurement reliability of the second scattering observation channel by the strong signal-to-noise ratio, the strong signal amplitude fluctuation coefficient and the strong signal saturation coefficient; Comparing the original response amplitude of the weak signal of the first scattering observation channel with a preset observation channel communication signal amplitude interval, if the original response amplitude of the weak signal is in the preset observation channel communication signal amplitude interval, marking the first connection state identification of the first scattering observation channel as being in the communication interval, otherwise marking the first connection state identification of the first scattering observation channel as not being in the communication interval; Comparing the original strong signal response amplitude of the second scattering observation channel with a preset observation channel communication signal amplitude interval, if the original strong signal response amplitude is in the preset observation channel communication signal amplitude interval, marking the second connection state mark of the second scattering observation channel as being in the communication interval, otherwise marking the second connection state mark of the second scattering observation channel as not being in the communication interval; And packaging the weak signal original response amplitude of the first scattering observation channel, the first quality index value, the first connection state identifier, the strong signal original response amplitude of the second scattering observation channel, the second quality index value and the second connection state identifier together into a multi-source observation set in the scattering cavity.
4. 4. The method for measuring the smoke characteristic parameters in a wide range based on multi-source data fusion according to claim 3, wherein the method for evaluating the quality of the multi-source observation set in the scattering cavity is as follows: The multisource observation set evaluation information in the scattering cavity comprises first channel quality information of a first scattering observation channel, second channel quality information of a second scattering observation channel and multisource observation data states in the scattering cavity; Comparing the first quality index value of the first scattering observation channel with a preset first quality index threshold value, if the first quality index value of the first scattering observation channel is higher than or equal to the preset first quality index threshold value, marking the first channel quality information of the first scattering observation channel as quality qualified, otherwise marking the first channel quality information of the first scattering observation channel as quality unqualified; comparing the second quality index value of the second scattering observation channel with a preset second quality index threshold value, if the second quality index value of the second scattering observation channel is higher than or equal to the preset second quality index threshold value, marking the second channel quality information of the second scattering observation channel as quality qualified, otherwise marking the second channel quality information of the second scattering observation channel as quality unqualified; the absolute value of the difference between the original response amplitude of the weak signal of the first scattering observation channel and the original response amplitude of the strong signal of the second scattering observation channel is recorded as an inter-channel signal strength deviation index value in the scattering cavity; Comparing the signal intensity deviation index value between channels in the scattering cavity with a preset signal intensity deviation index threshold value between channels to obtain a multi-source observation data state in the scattering cavity, wherein the multi-source observation data state in the scattering cavity comprises abnormal state and normal state; if the signal intensity deviation index value between channels in the scattering cavity is higher than or equal to the preset signal intensity deviation index threshold value between channels, marking the state of the multi-source observation data in the scattering cavity as abnormal, otherwise marking the state of the multi-source observation data in the scattering cavity as normal.
5. 5. The method for performing joint determination according to the multisource observation set evaluation information in the scattering cavity according to claim 4, wherein the method is as follows: The joint judgment result in the scattering cavity comprises normal communication observation, abnormal communication observation and abnormal channel; If the first channel quality information or the second channel quality information is unqualified, marking the joint judgment result in the scattering cavity as abnormal channel; If the quality information of the first channel and the quality information of the second channel are qualified, and the state of multi-source observation data in the scattering cavity is normal, marking the joint judgment result in the scattering cavity as normal communication observation, marking the average value between the original response amplitude of the weak signal of the first scattering observation channel and the original response amplitude of the strong signal of the second scattering observation channel as the original response amplitude of the signal in the scattering cavity, and incorporating the original response amplitude of the signal in the scattering cavity into a trusted observation data set in the scattering cavity; If the quality information of the first channel and the quality information of the second channel are qualified, the state of the multi-source observation data in the scattering cavity is abnormal, and the first connection state identifier or the second connection state identifier is in a communication section, marking the joint judgment result in the scattering cavity as communication observation abnormality; if the quality information of the first channel and the quality information of the second channel are qualified, the state of the multi-source observation data in the scattering cavity is abnormal, and the first connection state identifier and the second connection state identifier are not in the communication section, marking the joint judgment result in the scattering cavity as abnormal channel.
6. 6. The method for widely measuring smoke characteristic parameters based on multi-source data fusion according to claim 5, wherein the method for generating channel connection candidate output index values in the scattering cavity is as follows: Extracting a joint judgment result in the scattering cavity, and if the joint judgment result in the scattering cavity is normal in connection observation, not needing to carry out subsequent analysis; if the joint judgment result in the scattering cavity is that the channel is abnormal, sending channel abnormality early warning information to a mobile terminal of a worker; If the joint judgment result in the scattering cavity is abnormal in connection observation, the weak signal original response amplitude of the first scattering observation channel, the first quality index value, the strong signal original response amplitude of the second scattering observation channel and the second quality index value are input into a channel connection candidate output analysis model to obtain channel connection candidate output index values in the scattering cavity, wherein the channel connection candidate output index values in the scattering cavity are used for representing candidate output amplitudes meeting continuous connection relations in a channel parameter range junction interval.
7. 7. The method for measuring the flue gas characteristic parameters in a wide range based on multi-source data fusion according to claim 6, wherein the method for performing deviation analysis on the candidate output index values of the channel connection in the scattering cavity is as follows: Comparing the first quality index value with the second quality index value, and if the first quality index value is higher than or equal to the second quality index value, marking the weak signal original response amplitude of the first scattering observation channel as the reference signal amplitude in the scattering cavity; If the first quality index value is lower than the second quality index value, marking the strong signal original response amplitude of the second scattering observation channel as the reference signal amplitude in the scattering cavity; The absolute value of the difference between the channel connection candidate output index value and the reference signal amplitude is recorded as a signal deviation value in the scattering cavity; comparing the signal deviation value in the scattering cavity with a preset signal deviation threshold, if the signal deviation value in the scattering cavity is higher than the preset signal deviation threshold, marking the deviation information in the scattering cavity as abnormal, otherwise marking the deviation information in the scattering cavity as normal.
8. 8. The method for measuring the characteristic parameters of the flue gas in a wide range based on multi-source data fusion according to claim 7, wherein the method for performing the trusted data analysis according to the deviation information is as follows: If the deviation information in the scattering cavity is normal, the channel connection candidate output index value in the scattering cavity is included in the credible observation data set in the scattering cavity, if the deviation information in the scattering cavity is abnormal, an isolation mechanism is triggered, the channel connection candidate output index value is marked as unreliable data, and a new channel connection candidate output index value is regenerated until the deviation information in the scattering cavity is normal.
9. 9. The method for measuring the characteristic parameters of the flue gas in the wide range based on the multi-source data fusion according to claim 1 is characterized in that the method for obtaining the characteristic parameter measurement value information of the flue gas in the scattering cavity based on the trusted observation data set processing comprises the following steps: and recording the original response amplitude of the signal in the scattering cavity and the candidate output index value of the channel connection as a smoke characteristic parameter measurement value in the scattering cavity, extracting a source identifier corresponding to the smoke characteristic parameter measurement value in the scattering cavity, and packaging the smoke characteristic parameter measurement value in the scattering cavity and the corresponding source identifier together to obtain smoke characteristic parameter measurement value information in the scattering cavity.
10. 10. Flue gas characteristic parameter wide range measurement system based on multisource data fusion, characterized by comprising: the data acquisition module is used for constructing a first scattering observation channel and a second scattering observation channel in a scattering cavity in the fire smoke acquisition channel, and acquiring first signal observation data of the first scattering observation channel and second signal observation data of the second scattering observation channel in parallel to form a multi-source observation set in the scattering cavity; The joint judgment module is used for carrying out quality evaluation on the multi-source observation set in the scattering cavity to obtain multi-source observation set evaluation information in the scattering cavity, and carrying out joint judgment according to the multi-source observation set evaluation information in the scattering cavity to obtain a joint judgment result in the scattering cavity; The candidate output module is used for generating a channel connection candidate output index value in the scattering cavity according to the joint judgment result in the scattering cavity and the multisource observation set evaluation information; The characteristic parameter analysis module is used for performing deviation analysis on the candidate output index value of the channel connection in the scattering cavity to obtain deviation information in the scattering cavity, performing trusted data analysis according to the deviation information to obtain a trusted observation data set in the scattering cavity, and processing based on the trusted observation data set to obtain smoke characteristic parameter measurement value information in the scattering cavity.

Description

Flue gas characteristic parameter wide-range measurement method and system based on multi-source data fusion Technical Field The invention relates to the technical field of flue gas observation data processing, in particular to a flue gas characteristic parameter wide-range measurement method and system based on multi-source data fusion. Background In the fire-fighting fire smoke monitoring application scene, smoke characteristic parameters are used for supporting core tasks such as fire identification, development stage judgment, coordinated control triggering and treatment effect verification and the like. In the fire development process, the smoke characteristic parameters span is large and change fast, in order to cover early weak smoke and dense smoke in the development period, the system is generally provided with a plurality of observation channels in the same fire smoke acquisition channel to expand the range, and single smoke characteristic parameter wide-range measurement results are output through multi-source data fusion, so that the measurement results keep continuity and traceability in the whole range, and the requirements of alarm strategies and linkage control on stable input are met. In the range boundary interval of channel parameters, multiple observation channels have output capacity at the same time, but because of different response intervals, gain links and nonlinear compression characteristics, inconsistent amplitude and even opposite contradictory observation can be generated in the same smoke state, and meanwhile, the multi-source observation has differences in quality attributes such as signal-to-noise level and the like, so that the simple channel switching rule is easily triggered by instantaneous fluctuation, and the adjacent sampling periods are caused to have intersegmental jump or are output indeterminable because of the contradictory observation. The inter-segment jump can cause false alarm, linkage false action or inhibit action to be triggered to influence personnel evacuation and disposal time sequence, the incapability of judging trend can reduce reliability and weaken integrity of a repeated evidence chain, the prior art mostly adopts single threshold switching or experience weighting, lacks a continuous connection constraint mechanism facing a range junction interval, and is difficult to output continuous, monotone and traceable wide-range measurement results on the premise of not generating inter-segment jump. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a flue gas characteristic parameter wide-range measurement method and system based on multi-source data fusion, which can effectively solve the problems related to the background art. In order to achieve the purpose, the first aspect of the invention is realized by the following technical scheme that the flue gas characteristic parameter wide-range measurement method based on multi-source data fusion comprises the steps of constructing a first scattering observation channel and a second scattering observation channel in a scattering cavity in a fire flue gas acquisition channel, and acquiring first signal observation data of the first scattering observation channel and second signal observation data of the second scattering observation channel in parallel to form a multi-source observation set in the scattering cavity. And performing quality evaluation on the multi-source observation set in the scattering cavity to obtain multi-source observation set evaluation information in the scattering cavity, and performing joint judgment according to the multi-source observation set evaluation information in the scattering cavity to obtain a joint judgment result in the scattering cavity. And according to the joint judgment result in the scattering cavity, combining the multisource observation set evaluation information to generate a channel connection candidate output index value in the scattering cavity. Performing deviation analysis on the channel connection candidate output index value in the scattering cavity to obtain deviation information in the scattering cavity, performing trusted data analysis according to the deviation information to obtain a trusted observation data set in the scattering cavity, and processing based on the trusted observation data set to obtain flue gas characteristic parameter measurement value information in the scattering cavity. Further, the first signal observation data of the first scattering observation channel comprises a weak signal original response amplitude, a weak signal-to-noise ratio, a weak signal amplitude fluctuation coefficient and a weak signal saturation coefficient of the first scattering observation channel. The second signal observation data of the second scattering observation channel comprises a strong signal original response amplitude, a strong signal-to-noise ratio, a strong signal amplitude fluctuation coefficient and a strong