CN117061271A - Bus communication automatic regulating method for fire-fighting product - Google Patents
Bus communication automatic regulating method for fire-fighting product Download PDFInfo
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Abstract
The application discloses a bus communication automatic regulation method of fire-fighting products, which relates to the technical field of fire-fighting product systems and solves the problems of low communication signal rate and poor quality due to the influence of external factors or load change of communication cables; through the impedance adjustment to bus communication, the communication signal is more stable in the transmission process, the communication rate is higher, the communication quality is ensured, and the overall accuracy of numerical value processing is improved.
Description
Technical Field
The application relates to the technical field of fire-fighting product systems, in particular to an automatic bus communication adjusting method for fire-fighting products.
Background
In the practical application of fire protection products such as fire alarm systems, refuge escape systems and the like, the factors of comprehensive cost and reliability are considered, and the main stream product system architecture is that a controller loads components through two cables (industry name is two buses), and the controller supplies power to the components through the two buses and communicates with the components;
bus communication is typically in the form of pulse width modulation, using specific pulse widths to represent digital bit values, such as using 100us to represent bit 0 and 200us to represent bit 1. Because of various factors such as the influence of transmission characteristics of the communication cable and the influence of dynamic load change, bus communication is often easy to be unreliable;
in the process of bus communication, because the communication cable is influenced by external factors or load changes, fluctuation occurs in the transmission process of the communication signal, thereby influencing the whole quality of the whole communication signal and limiting the communication rate.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides an automatic bus communication adjusting method for fire-fighting products, which solves the problems of low communication signal rate and poor quality caused by the influence of external factors or the influence of load change on a communication cable.
In order to achieve the above purpose, the application is realized by the following technical scheme: an automatic bus communication adjusting method for fire products comprises the following steps:
s1, receiving and analyzing communication signals entering a bus, preferentially confirming initial waveforms of the communication signals, then confirming received waveforms of the communication signals entering the tail end of the bus, comparing two groups of waveforms, analyzing whether the waveforms are changed, and marking the waveforms as changed waveforms, wherein the specific mode is as follows:
s11, performing coincidence analysis on the confirmed initial waveform and the received waveform, if the two groups of waveforms are completely coincident, no processing is needed, otherwise, performing the next processing;
s12, confirming a numerical value fluctuation point of an initial waveform, wherein trend directions of waveform curves at two ends of the numerical value fluctuation point are opposite, one end of the waveform curve trend value is positive, the other end of the waveform curve trend value is negative, and conversely, confirming a plurality of numerical value fluctuation points in the initial waveform, confirming the initial fluctuation point and the tail end fluctuation point according to the trend of the initial waveform, starting from the initial fluctuation point to the tail end fluctuation point, confirming time difference values among the fluctuation points, and generating an initial time difference value sequence;
s13, confirming a receiving time difference value sequence by adopting the same mode as the step S12, comparing the initial time difference value sequence with the time difference value at the same position in the receiving time difference value sequence, and if the values are the same, not performing any processing, otherwise, marking the receiving waveform as a changed waveform;
s2, confirming the initial waveform and the changed waveform, confirming characteristic parameters belonging to different waveforms through different fluctuation points in the two groups of waveforms, and subsequently generating different impedance adjusting signals according to the difference between the characteristic parameters, wherein the specific mode is as follows:
s21, preferentially confirming a plurality of numerical value fluctuation points appearing in the initial waveform, and marking the signal fluctuation value corresponding to the numerical value fluctuation point as BD i The method comprises the steps that i represents different numerical fluctuation points, i=1, 2, … … and n, the curve at the front end of each numerical fluctuation point is confirmed, the confirmed curve is marked as a standard curve corresponding to the corresponding numerical fluctuation point, the standard curve is the curve at the front end of each numerical fluctuation point, and the curve between the corresponding numerical fluctuation point and the previous numerical fluctuation point is stopped until the previous numerical fluctuation point, wherein when the standard curve does not exist at the front end of the corresponding numerical fluctuation point, the curve does not participate in analysis and calculation;
s22, confirming the difference value between each point of the standard curve, wherein the difference value=the fluctuation value of the next point-the fluctuation value of the previous point, carrying out average value processing on a plurality of difference values belonging to the corresponding standard curve, confirming the standard parameter value belonging to the standard curve, and marking the standard parameter value as BC i Wherein i represents different numerical fluctuation points, TZ is adopted i ＝BD i ×C1+BC i X C2, confirming characteristic value TZ belonging to different value fluctuation points i Wherein C1 and C2 are presetThe specific value of the fixed coefficient factor of (2) is determined by an operator according to experience, and then the characteristic values TZ of a plurality of different value fluctuation points are obtained i Carrying out summation treatment to obtain a characteristic parameter CZ belonging to the initial waveform;
s23, for the changed waveform, executing steps S21-S22, and confirming the characteristic parameter GZ belonging to the changed waveform;
s24, comparing the characteristic parameters CZ of the initial waveform with the characteristic parameters GZ of the changed waveform, analyzing whether CZ meets CZ=GZ, if so, not performing any processing, if not, analyzing whether CZ meets CZ > GZ, if so, generating an impedance down-regulation signal, and if not, generating an impedance up-regulation signal;
s3, adjusting impedance parameters in the bus according to different impedance adjusting signals, monitoring and changing waveform changes of the waveform in the adjusting process, if the waveform changes normally, no subsequent processing is needed, if the waveform changes abnormally, an error signal is generated, and the subsequent processing is carried out, wherein the specific mode is as follows:
s31, according to the confirmed impedance down-regulating signal, regulating the impedance parameter in the bus downwards, monitoring a change waveform, confirming whether the characteristic parameter GZ of the change waveform is gradually reduced, and if so, regulating the characteristic parameter GZ to be within a CZ+Y1 value, wherein Y1 is a preset value;
s32, according to the confirmed impedance up-regulation signal, the impedance parameter in the bus is regulated upwards, the change waveform is monitored, whether the characteristic parameter GZ of the change waveform is gradually increased is confirmed, if so, the characteristic parameter GZ is regulated to be within the CZ-Y1 value, and if not, an error signal is generated;
s4, confirming the intercommunicated execution branch lines in the bus according to the error signals, confirming the fluctuation parameters of the corresponding execution branch lines, analyzing whether the fluctuation parameters reach the standard, directly generating branch line abnormal signals if the fluctuation parameters do not reach the standard, and carrying out the next processing if the fluctuation parameters reach the standard, wherein the specific mode is as follows:
s41, defining a group of monitoring periods T, wherein T is a preset value, confirming fluctuation parameters of different execution branches in the monitoring periods T, confirming the maximum value and the minimum value of internal numerical values from a plurality of groups of fluctuation parameters, and constructing a fluctuation interval belonging to the execution branches;
s42, comparing the fluctuation interval with a preset interval, analyzing whether the fluctuation interval belongs to the preset interval, if so, not performing any processing, and if not, directly generating a branching abnormal signal and displaying the branching abnormal signal in an external display end, wherein the representative parameter reaches the standard;
s5, confirming an execution branching line with the up-to-standard fluctuation parameter, constructing a corresponding fluctuation curve according to the corresponding fluctuation parameter, confirming the fluctuation times in the corresponding monitoring period T from the fluctuation curve, and judging whether the execution analysis is abnormal according to the fluctuation times, wherein the specific mode is as follows:
s51, confirming a plurality of groups of fluctuation parameters appearing in the monitoring period T according to the limited monitoring period T, and constructing a fluctuation parameter oscillogram according to the time trend;
s52, confirming the fluctuation point positions appearing in the fluctuation parameter waveform diagram, wherein the confirmation mode of the fluctuation point positions is the same as that of the step S12, recording the number of the appearing fluctuation times according to the confirmed fluctuation point positions, and marking the number of the appearing fluctuation times as CS k Wherein k represents different execution branches;
s53, the fluctuation times CS k Comparing with a preset parameter Y2, wherein Y2 is a preset value, the specific value is determined by an operator according to experience, and when CS k And when Y2 is not more than or equal to, carrying out no treatment, otherwise, representing that the corresponding execution line is in fluctuation abnormality, and generating a fluctuation abnormality signal.
Advantageous effects
The application provides a bus communication automatic regulating method of a fire-fighting product. Compared with the prior art, the method has the following beneficial effects:
the application judges whether the received waveform has characteristic change by preference, if so, judges the characteristic parameter of the corresponding waveform according to the fluctuation point position and the fluctuation curve of the front end which appear in the corresponding waveform, judges whether the impedance parameter in the bus is regulated normally downwards or normally upwards according to the confirmed characteristic parameter, records whether the corresponding fluctuation changes in the regulating process, if not, analyzes the branching line in sequence, and judges whether the branching line has abnormality according to the parameter generated by the branching line;
through the impedance adjustment to bus communication, the communication signal is more stable in the transmission process, the communication rate is higher, the communication quality is ensured, and the overall accuracy of numerical value processing is improved.
Drawings
FIG. 1 is a schematic flow chart of the method of the present application;
fig. 2 is a schematic diagram of the impedance adjustment according to the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
Referring to fig. 1, the application provides an automatic bus communication adjusting method for fire products, which comprises the following steps:
s1, receiving and analyzing communication signals entering a bus, preferentially confirming initial waveforms of the communication signals, then confirming received waveforms of the communication signals entering the tail end of the bus, comparing two groups of waveforms, analyzing whether the waveforms change or not, and marking the waveforms as changed waveforms, wherein the specific mode of comparing is as follows:
s11, performing coincidence analysis on the confirmed initial waveform and the received waveform, if the two groups of waveforms are completely coincident, no processing is needed, otherwise, performing the next processing;
s12, confirming a numerical value fluctuation point of an initial waveform, wherein trend directions of waveform curves at two ends of the numerical value fluctuation point are opposite, one end of the waveform curve trend value is positive, the other end of the waveform curve trend value is negative, and conversely, confirming a plurality of numerical value fluctuation points in the initial waveform, confirming the initial fluctuation point and the tail end fluctuation point according to the trend of the initial waveform, starting from the initial fluctuation point to the tail end fluctuation point, confirming time difference values among the fluctuation points, and generating an initial time difference value sequence;
s13, confirming a receiving time difference value sequence by adopting the same mode as the step S12, comparing the initial time difference value sequence with the time difference value at the same position in the receiving time difference value sequence, and if the values are the same, not performing any processing, otherwise, marking the receiving waveform as a changed waveform;
specifically, when the fluctuation comparison is performed, the waveforms may be not matched due to different initial numerical parameters, but the follow-up trend and follow-up fluctuation of the waveforms are the same, so that whether the received waveforms are changed or not can be analyzed and judged through the time difference value of the fluctuation points in the waveforms, if the received waveforms are changed, the corresponding time difference value is definitely changed, and if the received waveforms are not changed, the corresponding time difference value is not changed;
s2, confirming an initial waveform and a changed waveform, confirming characteristic parameters belonging to different waveforms through different fluctuation points in the two groups of waveforms, and subsequently, generating different impedance adjusting signals according to differences among the characteristic parameters, wherein the specific mode of confirming the characteristic parameters belonging to the different waveforms is as follows:
s21, preferentially confirming a plurality of numerical value fluctuation points appearing in the initial waveform, and marking the signal fluctuation value corresponding to the numerical value fluctuation point as BD i Wherein i represents different numerical fluctuation points, and i=1, 2, … …, n, and then the curve at the front end of the numerical fluctuation point is confirmed, the confirmed curve is marked as the marked curve corresponding to the numerical fluctuation point, wherein the marked curve is the curve at the front end of the numerical fluctuation point, and stops until the last numerical fluctuation point, namely the curve between the numerical fluctuation point and the last numerical fluctuation point, wherein when the marked curve does not exist at the front end of the corresponding numerical fluctuation pointWhen the line is in line, the line does not participate in analysis and calculation, and can be understood as an initial point position, and the front end of the initial point position generally does not have a corresponding standard curve;
s22, confirming the difference value between each point of the standard curve, wherein the difference value=the fluctuation value of the next point-the fluctuation value of the previous point, carrying out average value processing on a plurality of difference values belonging to the corresponding standard curve, confirming the standard parameter value belonging to the standard curve, and marking the standard parameter value as BC i Wherein i represents different numerical fluctuation points, and because the different numerical fluctuation points correspond to different standard distribution curves, the identification processing can be performed by using the subscript i, and TZ can be adopted i ＝BD i ×C1+BC i X C2, confirming characteristic value TZ belonging to different value fluctuation points i Wherein C1 and C2 are both preset fixed coefficient factors, the specific values are determined by operators according to experience, and the characteristic values TZ of a plurality of different values of fluctuation points are obtained i Carrying out summation treatment to obtain a characteristic parameter CZ belonging to the initial waveform;
s23, for the changed waveform, executing steps S21-S22, and confirming the characteristic parameter GZ belonging to the changed waveform;
s24, comparing the characteristic parameters CZ of the initial waveform with the characteristic parameters GZ of the changed waveform, analyzing whether CZ meets CZ=GZ, if so, not performing any processing, if not, analyzing whether CZ meets CZ > GZ, if so, generating an impedance down-regulation signal, and if not, generating an impedance up-regulation signal;
s3, adjusting impedance parameters in the bus according to different impedance adjusting signals, monitoring and changing waveform changes of the waveform in the adjusting process, if the waveform changes normally, no subsequent processing is needed, if the waveform changes abnormally, an error signal is generated, and the subsequent processing is carried out, wherein the specific mode of adjusting is as follows:
s31, according to the confirmed impedance down-regulating signal, the impedance parameter in the bus is regulated downwards, the changing waveform is monitored, whether the characteristic parameter GZ of the changing waveform is gradually reduced is confirmed, if so, the characteristic parameter GZ is regulated to be within the CZ+Y1 value, wherein Y1 is a preset value, the specific value is drawn by an operator according to experience, and if not, an error signal is generated;
s32, according to the confirmed impedance up-regulation signal, the impedance parameter in the bus is regulated upwards, the change waveform is monitored, whether the characteristic parameter GZ of the change waveform is gradually increased is confirmed, if so, the characteristic parameter GZ is regulated to be within the CZ-Y1 value, and if not, an error signal is generated;
s4, confirming the intercommunicated execution branch lines in the bus according to the error signals, confirming the fluctuation parameters of the corresponding execution branch lines, analyzing whether the fluctuation parameters reach the standard, directly generating branch line abnormal signals if the fluctuation parameters do not reach the standard, and carrying out the next processing if the fluctuation parameters reach the standard, wherein the specific mode for confirming is as follows:
s41, limiting a group of monitoring periods T, wherein T is a preset value, the value is generally 3min, the fluctuation parameters of different execution branches in the monitoring periods T are confirmed, the maximum value and the minimum value of internal numerical values are confirmed from a plurality of groups of fluctuation parameters, and a fluctuation interval belonging to the execution branches is constructed;
s42, comparing the fluctuation interval with a preset interval, analyzing whether the fluctuation interval belongs to the preset interval, if so, not performing any processing, and if not, directly generating a branching abnormal signal, displaying the branching abnormal signal in an external display end for external personnel to check, and timely taking countermeasures to avoid signal abnormality;
example two
Based on the above embodiment, in a specific implementation process, the present embodiment further includes:
s5, confirming an execution branching line with the fluctuation parameters reaching standards, constructing a corresponding fluctuation curve according to the corresponding fluctuation parameters, confirming the fluctuation times in the corresponding monitoring period T from the fluctuation curve, judging whether the execution branching line is abnormal according to the fluctuation times, and judging the abnormal execution branching line by the specific mode:
s51, confirming a plurality of groups of fluctuation parameters appearing in the monitoring period T according to the limited monitoring period T, and constructing a fluctuation parameter oscillogram according to the time trend;
s52, confirming the fluctuation point positions appearing in the fluctuation parameter waveform diagram, wherein the confirmation mode of the fluctuation point positions is the same as that of the step S12, recording the number of the appearing fluctuation times according to the confirmed fluctuation point positions, and marking the number of the appearing fluctuation times as CS k Wherein k represents different execution branches;
s53, the fluctuation times CS k Comparing with a preset parameter Y2, wherein Y2 is a preset value, the specific value is determined by an operator according to experience, and when CS k And when Y2 is not more than or equal to, carrying out no treatment, otherwise, representing that the corresponding execution line is in fluctuation abnormality, generating a fluctuation abnormality signal, and directly transmitting the fluctuation abnormality signal to an external display end.
Specifically, although some execution branch lines have no abnormality in the fluctuation parameters, if there are multiple fluctuations in the execution branch lines, the abnormality of the execution branch lines is also caused, so that it is necessary to determine the execution branch lines to analyze whether the execution branch lines are abnormal.
Example III
In the specific implementation process of this embodiment, the specific difference is that:
as shown in fig. 2, after the controller is powered on or reset to start working, communication data is sent, the bus monitoring and adjusting device monitors the communication signal to determine the communication quality, if the communication quality is lower than the requirement, the impedance value and the adjusting scheme to be adjusted are determined according to the deviation value of the communication signal, the impedance of the bus line is adjusted in real time, the communication quality is monitored again after adjustment, if the requirement is met, the adjustment of the impedance scheme is stopped, and if the requirement is not met, the adjustment is continued. After meeting the communication quality requirement, the bus monitoring and adjusting device sends quality information to the controller;
example IV
This embodiment includes all of the three embodiments described above in the specific implementation.
Some of the data in the above formulas are numerical calculated by removing their dimensionality, and the contents not described in detail in the present specification are all well known in the prior art.
The above embodiments are only for illustrating the technical method of the present application and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present application may be modified or substituted without departing from the spirit and scope of the technical method of the present application.
Claims (6)
1. The bus communication automatic regulation method of the fire-fighting product is characterized by comprising the following steps of:
s1, receiving and analyzing communication signals entering a bus, preferentially confirming initial waveforms of the communication signals, then confirming received waveforms of the communication signals entering the tail end of the bus, comparing two groups of waveforms, analyzing whether the waveforms are changed or not, and marking the waveforms as changed waveforms;
s2, confirming the initial waveform and the changed waveform, confirming characteristic parameters belonging to different waveforms through different fluctuation points in the two groups of waveforms, and subsequently, generating different impedance adjusting signals according to the difference between the characteristic parameters;
s3, adjusting impedance parameters in the bus according to different impedance adjusting signals, monitoring and changing waveform changes of the waveform in the adjusting process, if the waveform changes normally, no subsequent processing is needed, if the waveform changes abnormally, an error signal is generated, and the subsequent processing is carried out;
s4, confirming the intercommunicated execution branch lines in the bus according to the error signals, confirming fluctuation parameters of the corresponding execution branch lines, analyzing whether the fluctuation parameters reach the standard, directly generating branch line abnormal signals if the fluctuation parameters do not reach the standard, and carrying out the next processing if the fluctuation parameters reach the standard;
s5, confirming the execution branching line with the up-to-standard fluctuation parameters, constructing a corresponding fluctuation curve according to the corresponding fluctuation parameters, confirming the fluctuation times in the corresponding monitoring period T from the fluctuation curve, and judging whether the execution analysis is abnormal according to the fluctuation times.
2. The automatic bus communication adjusting method for fire products according to claim 1, wherein in the step S1, the specific way of comparing the two sets of waveforms is as follows:
s11, performing coincidence analysis on the confirmed initial waveform and the received waveform, if the two groups of waveforms are completely coincident, no processing is needed, otherwise, performing the next processing;
s12, confirming a numerical value fluctuation point of an initial waveform, wherein trend directions of waveform curves at two ends of the numerical value fluctuation point are opposite, one end of the waveform curve trend value is positive, the other end of the waveform curve trend value is negative, and conversely, confirming a plurality of numerical value fluctuation points in the initial waveform, confirming the initial fluctuation point and the tail end fluctuation point according to the trend of the initial waveform, starting from the initial fluctuation point to the tail end fluctuation point, confirming time difference values among the fluctuation points, and generating an initial time difference value sequence;
s13, the receiving waveform adopts the same mode as the step S12, a receiving time difference value sequence is confirmed, the initial time difference value sequence is compared with the time difference value at the same position in the receiving time difference value sequence, if the values are the same, no processing is carried out, otherwise, the receiving waveform is marked as a changed waveform.
3. The automatic bus communication adjustment method for fire products according to claim 2, wherein in the step S2, the specific ways of identifying the characteristic parameters belonging to different waveforms are as follows:
s21, preferentially confirming a plurality of numerical value fluctuation points appearing in the initial waveform, and marking the signal fluctuation value corresponding to the numerical value fluctuation point as BD i The method comprises the steps that i represents different numerical fluctuation points, i=1, 2, … … and n, the curve at the front end of each numerical fluctuation point is confirmed, the confirmed curve is marked as a standard curve corresponding to the corresponding numerical fluctuation point, the standard curve is the curve at the front end of each numerical fluctuation point, and the curve between the corresponding numerical fluctuation point and the previous numerical fluctuation point is stopped until the previous numerical fluctuation point, wherein when the standard curve does not exist at the front end of the corresponding numerical fluctuation point, the curve does not participate in analysis and calculation;
s22, standard matchingConfirming the difference value between each point of the curve, wherein the difference value=the fluctuation value of the next point-the fluctuation value of the previous point, carrying out average value processing on a plurality of difference values belonging to the corresponding standard curve, confirming the standard parameter value belonging to the standard curve, and marking the standard parameter value as BC i Wherein i represents different numerical fluctuation points, TZ is adopted i ＝BD i ×C1+BC i X C2, confirming characteristic value TZ belonging to different value fluctuation points i Wherein C1 and C2 are both preset fixed coefficient factors, and the characteristic values TZ of a plurality of different value fluctuation points are obtained i Carrying out summation treatment to obtain a characteristic parameter CZ belonging to the initial waveform;
s23, for the changed waveform, executing steps S21-S22, and confirming the characteristic parameter GZ belonging to the changed waveform;
s24, comparing the characteristic parameters CZ of the initial waveform with the characteristic parameters GZ of the changed waveform, analyzing whether CZ meets CZ=GZ, if so, not performing any processing, if not, analyzing whether CZ meets CZ > GZ, if so, generating an impedance down-regulation signal, and if not, generating an impedance up-regulation signal.
4. The automatic bus communication adjustment method for fire-fighting products according to claim 3, wherein in the step S3, the specific manner of adjusting the impedance parameter inside the bus is:
s31, according to the confirmed impedance down-regulating signal, regulating the impedance parameter in the bus downwards, monitoring a change waveform, confirming whether the characteristic parameter GZ of the change waveform is gradually reduced, and if so, regulating the characteristic parameter GZ to be within a CZ+Y1 value, wherein Y1 is a preset value;
and S32, according to the confirmed impedance up-regulation signal, regulating the impedance parameter in the bus upwards, monitoring the change waveform, confirming whether the characteristic parameter GZ of the change waveform gradually rises, if so, regulating the characteristic parameter GZ to be within the CZ-Y1 value, and if not, generating an error signal.
5. The automatic adjustment method for bus communication of fire-fighting products according to claim 4, wherein in step S4, the specific way of confirming the execution branches communicated with each other in the bus is as follows:
s41, defining a group of monitoring periods T, wherein T is a preset value, confirming fluctuation parameters of different execution branches in the monitoring periods T, confirming the maximum value and the minimum value of internal numerical values from a plurality of groups of fluctuation parameters, and constructing a fluctuation interval belonging to the execution branches;
s42, comparing the fluctuation interval with a preset interval, analyzing whether the fluctuation interval belongs to the preset interval, if so, not performing any processing, and if not, directly generating a branching abnormal signal and displaying the branching abnormal signal in an external display end, wherein the representative parameter reaches the standard.
6. The method for automatically adjusting bus communication of fire-fighting products according to claim 5, wherein in step S5, the specific way for determining whether the execution branch line is abnormal is:
s51, confirming a plurality of groups of fluctuation parameters appearing in the monitoring period T according to the limited monitoring period T, and constructing a fluctuation parameter oscillogram according to the time trend;
s52, confirming the fluctuation point positions appearing in the fluctuation parameter waveform diagram, wherein the confirmation mode of the fluctuation point positions is the same as that of the step S12, recording the number of the appearing fluctuation times according to the confirmed fluctuation point positions, and marking the number of the appearing fluctuation times as CS k Wherein k represents different execution branches;
s53, the fluctuation times CS k Comparing with a preset parameter Y2, wherein Y2 is a preset value, the specific value is determined by an operator according to experience, and when CS k And when Y2 is not more than or equal to, carrying out no treatment, otherwise, representing that the corresponding execution line is in fluctuation abnormality, and generating a fluctuation abnormality signal.
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