CN101692149A - Wave crest seeking method and wave crest seeking system - Google Patents

Wave crest seeking method and wave crest seeking system Download PDF

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CN101692149A
CN101692149A CN200910272306A CN200910272306A CN101692149A CN 101692149 A CN101692149 A CN 101692149A CN 200910272306 A CN200910272306 A CN 200910272306A CN 200910272306 A CN200910272306 A CN 200910272306A CN 101692149 A CN101692149 A CN 101692149A
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data
crest
time
current
wave data
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CN101692149B (en
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周祖德
程松林
李方敏
王欢
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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Abstract

The invention discloses a wave crest seeking method. The wave crest seeking method comprises the following steps: acquiring input waveform data; positioning the state of a system according to the current data and the last data of the waveform data; and determining the position of a wave crest according to the state of the system. The wave crest seeking method of the invention does not need a large amount of storage space and numerous instruction cycles, and has high crest seeking precision. The invention discloses a wave crest seeking system at the same time.

Description

Crest seeking method and crest seeking system
Technical field
The present invention relates to the fiber grating data transmission system, relate in particular to the method and system of seeking crest in the fiber grating data transmission system.
Background technology
Along with the introduction of fiber grating, the full optical fiber communication and the sensor network of various complexity have spread all over the whole communications field.Fiber grating because of its transfer rate height, attenuation is few is utilized more and more.The manufacture process of existing fiber grating is as follows: make the particle interaction that mixes in extraneous incident photon and the fibre core cause fiber core refractive index axially periodicity or acyclic permanent change by certain process, form the space phase grating in fibre core.
The fiber grating data transmission system comprises data-modulated system and data demodulates system.Described data-modulated system is transformed into electromagnetic wave (carrier wave) signal that is suitable for transmitting on the analog channel to data message, and frequency limitation in the frequency range that described analog channel is supported.Described data demodulates system is reduced into data message to a carrier signal of collecting from described analog channel.
Existing fiber grating data demodulates system uses DSP (Digital Signal Processor mostly, digital signal processor), ARM (Advanced RISC Machine, ARC computer) or single-chip microcomputer and wavelength is carried out data demodulates by seeking crest.Above-mentioned three kinds of demodulation methods generally come image data with one-period as benchmark in the process of seeking crest, and under the Gaussian transformation instruction described data are carried out crest seeking and handle.Described Gaussian transformation instruction comprises polynomial expression-Gauss formula fitting process instruction and the instruction of Gauss formula fitting process.Described polynomial expression-Gauss formula fitting process instruction comprises carries out the instruction of Gaussian function-polynomial transformation and the instruction that the general polynomial fitting process is sought crest to the squiggle data of gathering.Described Gauss formula fitting process instruction is that the squiggle data of gathering are directly carried out the instruction of process of fitting treatment as Gaussian function, and therefore described Gauss formula fitting process instruction is not carried out polynomial transformation to described data and handled.In addition, existing crest seeking method relates to also that to put with n before and after the peak value be that the instruction that benchmark compares one by one searches out crest.
Yet, utilize instruction of polynomial expression-Gauss formula fitting process or Gauss formula fitting process to instruct to seek crest and all need the data that enough internal memories come the one-period of storage of collected, and described instruction need consume a lot of instruction cycles, thereby not only influenced the speed of crest seeking, and limited the speed of fiber grating data demodulates system.Utilize comparison order one by one to seek crest, thereby accuracy is not high, a little less than the antijamming capability then owing to be to realize crest seeking by relatively mode one by one.Comprehensive above the argumentation, the above-mentioned crest seeking method of three kinds of instructions of utilizing all is not suitable for system speed and the demanding fiber grating data demodulates of degree of accuracy system.
Therefore, be necessary to provide a kind of improved crest seeking method and system to overcome the defective of prior art.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of crest seeking method and crest seeking system, and described crest seeking method and crest seeking system need not a large amount of storage spaces and numerous instruction cycle, peak-seeking precision height.
To achieve these goals, the invention provides a kind of crest seeking method, described crest seeking method comprises the steps: to gather the Wave data of input; According to the current data of described Wave data and last time the data locking system state; And determine crest location according to described system state.
Preferably, also comprise after the step of the Wave data of described collection input: whether the last secondary data of judging described Wave data is greater than opening threshold values, then, described according to described Wave data current data and last time the data locking system state step be specially: when the last secondary data of described Wave data during, continue to gather the Wave data of input less than described unlatching threshold values; When the last secondary data of described Wave data during greater than described unlatching threshold values, according to the current data of described Wave data and last time the data locking system state.
In one embodiment of the invention, described according to described Wave data current data and last time the data locking system state step be specially: whether the current data of judging described Wave data less than described unlatching threshold values; When the current data of described Wave data during less than described unlatching threshold values, locating described system state is non-original state; Then, determine that according to described system state the step of crest location is specially: select whether to accept peak value, when selecting to receive described peak value, determine crest location according to described current data and the described secondary data that goes up.
In another embodiment of the present invention, described according to described Wave data current data and last time the data locking system state step be specially: whether the current data of judging described Wave data less than described unlatching threshold values; When the current data of described Wave data during greater than described unlatching threshold values, whether the current data of judging described Wave data is less than the last secondary data of described Wave data; When the current data of described Wave data during less than the last secondary data of described Wave data, locating described system state is the decline state, and the counting that descends, judge whether the described secondary data that goes up equals maximum crest data, when described when going up secondary data and equaling described maximum crest data, current time of described current data is recorded as the concluding time.
Preferably, describedly determine also to comprise before the step of crest location according to described system state: whether the count value of judging described decline counting is greater than maximum decline count value; When the count value of described decline counting during greater than described maximum decline count value, locating described system state is completion status, then, describedly determines that according to described system state the step of crest location is specially: determine crest location according to the described concluding time.
In an embodiment more of the present invention, described crest seeking method also comprises: when the current data of described Wave data during greater than the last secondary data of described Wave data, locating described system state is propradation; Whether the current data of judging described Wave data is greater than maximum crest data; When the current data of described Wave data during greater than maximum crest data, described current data is recorded as maximum crest data, the current time of described current data is recorded as zero-time, count value zero clearing with described decline counting, then, describedly determine that according to the described concluding time step of crest location is specially: according to described concluding time and described zero-time location crest.
Preferably, described step according to described concluding time and described zero-time location crest is specially: when the described concluding time was zero, described zero-time was set to the crest time of occurrence; When the described concluding time was non-vanishing, the mean value of described zero-time and described concluding time was set to the crest time of occurrence.
In another embodiment of the present invention, described crest seeking method also comprises: when the current data of described Wave data equaled the last secondary data of described Wave data, locating described system state was plateau; Whether the current data of judging described Wave data is greater than maximum crest data; When the current data of described Wave data during greater than maximum crest data, described current data is recorded as maximum crest data, current time of described current data is recorded as zero-time.
The present invention also provides a kind of crest seeking system, and described crest seeking comprises Wave data acquisition module, system state locating module and crest location determination module.Described Wave data acquisition module is used to gather the Wave data of input; Described system state locating module be used for the Wave data gathered according to described Wave data acquisition module current data and last time the data locking system state; Described crest location determination module is used for determining crest location according to the system state of described system state locating module location.
In one embodiment of the invention, described system state locating module comprise data threshold values comparison judgment unit, accept selected cell, the last time-current data comparison judgment unit and system state positioning unit.Described data threshold values comparison judgment unit is used to judge the current data of the Wave data that described Wave data acquisition module is gathered and whether goes up secondary data greater than opening threshold values.The described selected cell of accepting is used for judging on the Wave data secondary data when described data threshold values comparison judgment unit and during less than described unlatching threshold values, judges whether to accept peak value greater than described unlatching threshold values and described current data; Described last time-current data comparison judgment unit is used for when described data threshold values comparison judgment unit is judged the last secondary data of Wave data and current data all greater than described unlatching threshold values, and whether the current data of judging described Wave data is greater than the last secondary data of described Wave data; Described system state positioning unit is used for the judged result positioning system state according to described last time-current data comparison judgment unit.
In sum, thereby crest seeking method of the present invention and crest seeking system are according to the current data and the definite crest location of data locking system state last time of described Wave data, the waveform of described system state real-time follow-up and location input, therefore in seeking the crest process, need not the data that consumes memory is stored one-period, the instruction that realizes crest seeking is few, saved a large amount of storage spaces and wave form analysis time, searching crest speed is fast, precision is high.
Description of drawings
Fig. 1 is the process flow diagram of crest seeking method first embodiment of the present invention.
Fig. 2 is the process flow diagram of crest seeking method second embodiment of the present invention.
Fig. 3 is the system state conversion synoptic diagram of crest seeking method shown in Figure 2.
Fig. 4 is the structured flowchart of crest seeking system of the present invention.
Fig. 5 is the structured flowchart of the system state locating module of crest seeking system shown in Figure 4.
Fig. 6 is the structured flowchart of the system state positioning unit of system shown in Figure 5 state locating module.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, crest seeking method of the present invention and crest seeking system need not a large amount of storage spaces and numerous instruction cycle, peak-seeking precision height.To elaborate below.
Fig. 1 is the process flow diagram of crest seeking method of the present invention.As shown in Figure 1, described peak finding method comprises the steps:
Step S10: the Wave data of gathering input;
Step S20: judge that whether (described unlatching threshold values can dynamically be provided with according to actual environment greater than opening threshold values for the last secondary data of described Wave data.Described determining step is because power supply for the system of filtering out, the system interference that wiring etc. produce), (secondary data that goes up described here can be thought the interference that comes from the outside when the last secondary data of described Wave data during less than described unlatching threshold values, therefore will not analyze the described secondary data that goes up, system works is in original state), change step S100, when the last secondary data of described Wave data during greater than described unlatching threshold values, continuation step S300;
Step S300 is according to the current data and data locking system state last time (this moment, system began to analyze data, was operated in the peak-seeking state) of described Wave data;
Step S400 determines crest location according to described system state.
As seen from the above, thereby present embodiment crest seeking method is according to the current data and the definite crest location of data locking system state last time of described Wave data, therefore need not the data that consumes memory is stored one-period, the instruction that realizes crest seeking is few, saved a large amount of storage spaces and wave form analysis time, searching crest speed is fast, precision is high.
Fig. 2 is the process flow diagram of crest seeking method second embodiment of the present invention.
Step S100: the Wave data of gathering input;
Step S200: whether the last secondary data of judging described Wave data is greater than opening threshold values, when the last secondary data of described Wave data during, continue step S300, when the last secondary data of described Wave data during less than described unlatching threshold values greater than described unlatching threshold values, change step S100;
Step S300: whether the current data of judging described Wave data is less than described unlatching threshold values, when the current data of described Wave data during less than described unlatching threshold values, continue step S411,, change step S421 when the current data of described Wave data during greater than described unlatching threshold values;
Step S411: locating described system state is non-original state (illustrative system has produced short waveform of cycle);
Step S412: select whether to accept peak value and (can select whether to accept this type of waveform according to actual conditions here, such as judging it is clutter or because the waveform that sensor generation deformation produces) by the size of data of sampling from system, when selecting to receive described peak value, continue step S413, when selecting not receive described peak value, change step S100;
Step S413: determine crest location according to described current data and the described secondary data that goes up;
Step S421: whether the current data of judging described Wave data is less than the last secondary data of described Wave data, when the current data of described Wave data during greater than the last secondary data of described Wave data (explanation has produced rising edge), continue step S511, when the current data of described Wave data equals the last secondary data of described Wave data, change step S521, when the current data of described Wave data during less than the last secondary data of described Wave data (explanation has produced negative edge), change step S531;
Step S511: locating described system state is propradation;
Step S512: whether the current data of judging described Wave data greater than maximum crest data, when the current data of described Wave data during greater than maximum crest data, continue step S513, otherwise change step S100;
Step S513: described current data is recorded as maximum crest data, current time of described current data is recorded as zero-time,, change step S100 with the count value zero clearing of the counting that descends;
Step S521: locating described system state is plateau;
Step S522: whether the current data of judging described Wave data greater than maximum crest data, when the current data of described Wave data during greater than maximum crest data, continue step S523, otherwise step S100;
Step S523: described current data is recorded as maximum crest data, current time of described current data is recorded as zero-time, change step S100;
Step S531: locating described system state is the decline state, and the counting that descends,
Step S532: judge whether the described secondary data that goes up equals maximum crest data, when going up secondary data and equaling described maximum crest data, continue step S533 when described, otherwise the step S100 that walks around;
Step S533: the current time of described current data is recorded as the concluding time;
Step S534: whether the count value of judging described decline counting greater than maximum decline count value, when the count value of described decline counting during greater than described maximum decline count value, continues step S535, otherwise changes step S100;
Step S535: locating described system state is completion status;
Step S536: the corresponding zone bit reporting system of set finds crest, according to described concluding time and described zero-time location crest.
Wherein, described step S536 is specially: when the described concluding time is zero (explanation has collected spike), described zero-time is set to the crest time of occurrence; When the described concluding time is non-vanishing (explanation has collected flat peak), the mean value of described zero-time and described concluding time is set to the crest time of occurrence.
As seen from the above, present embodiment crest seeking method is come the waveform of real-time follow-up and location input by system state, by the conversion of system state (original state, propradation, plateau, decline state, completion status), make system synchronous with current state all the time.The maximum crest data of this method real time record, zero-time, concluding time and decline number of times.When current data is maximal value, upgrade maximum crest data and zero-time; When last secondary data was maximum crest data and current sampled value less than last time during sampled value, upgrade the concluding time, so just make system state along with synchronous waveform changes.When current sampled value less than last time during sampled value, upgrade the decline number of times.The resolution that the maximum decline count value of the present invention by described decline number of times is set can control waveform be analyzed realizes self-defined demodulation accuracy.When for example the crest of being separated by very near being arranged in the system, can improve analysis precision by reducing described maximum decline count value.
Fig. 3 is the system state conversion synoptic diagram of crest seeking method shown in Figure 2.As shown in the figure, system state can be: when current data when opening threshold values, system is transformed into original state from original state, shown in arrow among the figure 20.When original state, when current data during greater than last secondary data, system is transformed into propradation from original state, shown in arrow among the figure 21.When propradation, when current data during greater than last secondary data, system is transformed into propradation from propradation, shown in arrow among the figure 22.When propradation, when current data equaled secondary data, system was transformed into plateau from propradation, shown in arrow among the figure 23.When propradation, when current data during less than last secondary data, system is transformed into the decline state from propradation, shown in arrow among the figure 24.When plateau, when current data equaled secondary data, system was transformed into plateau from plateau, shown in arrow among the figure 25.When plateau, when current data during greater than last secondary data, system is transformed into propradation from plateau, shown in arrow among the figure 26.When plateau, when current data during less than last secondary data, system is transformed into the decline state from plateau, shown in arrow among the figure 27.When the decline state, when current data during greater than last secondary data, system from the decline state exchange to propradation, shown in arrow among the figure 28.When the decline state, when current data equals secondary data, system from the decline state exchange to plateau, shown in arrow among the figure 29.When the decline state, when current data during less than last secondary data, system from the decline state exchange to the decline state, shown in arrow among the figure 30.When the decline state, when the count value of the counting that descends during greater than maximum decline count value, system from the decline state exchange to completion status, shown in arrow among the figure 31.When completion status, when needing to continue to seek crest, system is transformed into original state from completion status, shown in arrow among the figure 32.
Fig. 4 is the structured flowchart of crest seeking system of the present invention.Described crest seeking system comprises Wave data acquisition module 100, system state locating module 200 and crest location determination module 300.Described Wave data acquisition module 100 is used to gather the Wave data of input; Described system state locating module 200 be used for the Wave data gathered according to described Wave data acquisition module 100 current data and last time the data locking system state; Described crest location determination module 300 is used for determining crest location according to the system state of described system state locating module 200 location.
Wherein, as shown in Figure 4, described system state locating module 200 comprises data threshold values comparison judgment unit 210, accepts chooser unit 220, the last time-current data comparison judgment unit 230 and system state positioning unit 240.
Described data threshold values comparison judgment unit 210 is used to judge the current data of the Wave data that described Wave data acquisition module 100 is gathered and whether goes up secondary data greater than opening threshold values.Described unlatching threshold values can dynamically be provided with according to actual environment.210 pairs of described judgements of going up secondary data of described data threshold values comparison judgment unit are because power supply for the system of filtering out, the system interference that wiring etc. produce, the last secondary data of judging described Wave data when described data threshold values comparison judgment unit 210 is during less than described unlatching threshold values, the secondary data that goes up described here can be thought the interference that comes from the outside, therefore will not analyze the described secondary data that goes up, system works continues the input data in original state.The last secondary data of judging described Wave data when described data threshold values comparison judgment unit 210 is during greater than described unlatching threshold values, and system begins to analyze data, according to the current data of described Wave data and last time the data locking system state, be operated in the peak-seeking state.
The described selected cell 220 of accepting is used for judging that when described data threshold values comparison judgment unit 210 the described secondary data that goes up is greater than described unlatching threshold values and described current data during less than described unlatching threshold values, locating described system state is non-original state (illustrative system has produced short waveform of cycle), and judge whether to accept peak value, here can select whether to accept this type of waveform according to actual conditions, such as judging it is clutter or because the waveform that sensor generation deformation produces by the size of data of sampling from system.When selecting to receive described peak value, described crest location determination module 300 is determined crest location according to described current data and the described secondary data that goes up.
Described last time-current data comparison judgment unit 230 is used for when described data threshold values comparison judgment unit 210 is judged the last secondary data of Wave datas and current data all greater than the unlatching threshold values, and whether the current data of judging described Wave data is greater than the last secondary data of described Wave data.
Described system state positioning unit 240 is used for the state of positioning system as a result according to described last time-current data comparison judgment unit 230 is judged.
In the present embodiment, described crest seeking system was wanted initialization system before described Wave data acquisition module 100 image data, make described system be positioned at original state.In addition, described system is provided with data register and current data register last time.Described last time, data register was used to preserve the data of described Wave data acquisition module sampling 100 last time, and described current data register is used to preserve the data of described Wave data acquisition module 100 current samplings.In each sampling period, in case intact data of systematic analysis and when next time, sampling was about to begin, the value of the current data of described current data register holds is composed to described last time of data register, makes described last time data register preserve the last time data of sampling all the time.In addition, described system also is provided with maximum crest data register, concluding time register, zero-time register and time counter that descends.Described maximum crest data register is used for preserving the sampling greatest measure.Described concluding time register, zero-time register are used to preserve the sampling time, and described decline time counter is used to write down the decline number of times.
At length, as shown in Figure 6, described system state positioning unit 240 comprise current data-maximum crest data comparison judgment sub-unit 241, first handle subelement 242, the and manage subelement 246, second everywhere and handle subelement 243, go up secondary data-maximum crest data relatively judgment sub-unit the 244, the 3rd handle subelement 245, decline number of times-maximum decline count value relatively judgment sub-unit 247 and the 5th handle subelement 248.
The current data that described current data-maximum crest data comparison judgment sub-unit 241 is used for judging described Wave data when described last time-current data comparison judgment unit 230 is during more than or equal to the last secondary data of described Wave data, and whether the current data of judging described Wave data is greater than the maximum crest data of maximum crest data register.
Described first handles current data that subelement 242 is used for judging described Wave data when described last time-current data comparison judgment unit 230 greater than the current data of the last secondary data of described Wave data and described current data-described Wave data of maximum crest data comparison judgment sub-unit 241 judgements during greater than the maximum crest data of described maximum crest data register, locating described system state is propradation, preserve described current data to described maximal value crest data register, the current time of preserving described current data is to described zero-time register, simultaneously with the count value zero clearing of described decline time counter
Described the manages subelement 246 everywhere is used for judging when the current data of described Wave data equaling the upper secondary data of described Wave data and described current data-maximum crest data relatively the current data of the described Wave data of judgment sub-unit 241 judgements is greater than the maximum crest data of described maximum crest data register when described last time-current data comparison judgment unit 230; Locating described system mode is stable state; Preserve described current data to described maximum crest data register; Preserve the current time of described current data to described zero-time register
Described second handles subelement 243 is used for when the current data of described last time-described Wave data of current data comparison judgment unit 230 judgements during less than the last secondary data of described Wave data, locating described system state is the decline state, to the described decline time counter counting that descends;
Described when going up current data that secondary data-maximum crest data comparison judgment sub-unit 244 is used for judging described Wave data when described last time-current data comparison judgment unit 230 less than the last secondary data of described Wave data, judge whether described last secondary data equals maximum crest data;
The described the 3rd handle subelement 245 be used for when described go up secondary data-maximum crest data comparison judgment sub-unit 244 judge described on secondary data when equaling described maximum crest data, the current time of preserving described current data is to the concluding time register;
Whether described decline number of times-maximum decline count value comparison judgment sub-unit 247 is used to judge the count value of described decline time counter greater than maximum decline count value,
The described the 5th handles subelement 248 is used for when described decline number of times-maximum decline count value judgment sub-unit 247 count value during greater than maximum decline count value of judging the inferior counter of described decline relatively, locating described system state is completion status, and according to the concluding time of described concluding time register and the zero-time location crest of described zero-time register.
Wherein, described the 5th processing subelement 248 location crests are specially: when the described concluding time is zero (explanation has collected spike), described zero-time is set to the crest time of occurrence; When the described concluding time is non-vanishing (explanation has collected flat peak), the mean value of described zero-time and described concluding time is set to the crest time of occurrence.
As seen from the above, the present embodiment crest seeking system comes the waveform of real-time follow-up and location input by system state, conversion by system state (original state, propradation, plateau, decline state, completion status), make system synchronous with current state all the time, therefore need not a large amount of storage spaces and numerous instruction cycle, peak-seeking precision height.Simultaneously, the resolution that the size of native system by maximum decline count value is set can control waveform be analyzed realizes self-defined demodulation accuracy.
The above is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.

Claims (10)

1. a crest seeking method comprises the steps:
Gather the Wave data of input;
According to the current data of described Wave data and last time the data locking system state; And
Determine crest location according to described system state.
2. crest seeking method as claimed in claim 1 is characterized in that, also comprises after the step of the Wave data of described collection input:
Whether the last secondary data of judging described Wave data greater than opening threshold values,
Then, described according to described Wave data current data and last time the data locking system state step be specially:
When the last secondary data of described Wave data during, continue to gather the Wave data of input less than described unlatching threshold values; And
When the last secondary data of described Wave data during greater than described unlatching threshold values, according to the current data of described Wave data and last time the data locking system state.
3. crest seeking method as claimed in claim 2 is characterized in that, described according to described Wave data current data and last time the data locking system state step be specially:
Whether the current data of judging described Wave data is less than described unlatching threshold values; And
When the current data of described Wave data during less than described unlatching threshold values, locating described system state is non-original state;
Then, determine that according to described system state the step of crest location is specially:
Select whether to accept peak value; And
When selecting to receive described peak value, determine crest location according to described current data and the described secondary data that goes up.
4. crest seeking method as claimed in claim 2 is characterized in that, described according to described Wave data current data and last time the data locking system state step be specially:
Whether the current data of judging described Wave data is less than described unlatching threshold values;
When the current data of described Wave data during greater than described unlatching threshold values, whether the current data of judging described Wave data is less than the last secondary data of described Wave data;
When the current data of described Wave data during less than the last secondary data of described Wave data, locating described system state is the decline state, and the counting that descends; And
Judge whether the described secondary data that goes up equals maximum crest data, when described when going up secondary data and equaling described maximum crest data, current time of described current data is recorded as the concluding time.
5. crest seeking method as claimed in claim 4 is characterized in that, describedly determines also to comprise before the step of crest location according to described system state:
Whether the count value of judging described decline counting is greater than maximum decline count value; And
When the count value of described decline counting during greater than described maximum decline count value, locating described system state is completion status,
Then, describedly determine that according to described system state the step of crest location is specially:
Determine crest location according to the described concluding time.
6. crest seeking method as claimed in claim 4 is characterized in that, also comprises:
When the current data of described Wave data during greater than the last secondary data of described Wave data, locating described system state is propradation;
Whether the current data of judging described Wave data is greater than maximum crest data; And
When the current data of described Wave data during greater than maximum crest data, described current data is recorded as maximum crest data, current time of described current data is recorded as zero-time, with the count value zero clearing of described decline counting,
Then, describedly determine that according to the described concluding time step of crest location is specially:
According to described concluding time and described zero-time location crest.
7. crest seeking method as claimed in claim 6 is characterized in that, described step according to described concluding time and described zero-time location crest is specially:
When the described concluding time was zero, described zero-time was set to the crest time of occurrence; And
When the described concluding time was non-vanishing, the mean value of described zero-time and described concluding time was set to the crest time of occurrence.
8. crest seeking method as claimed in claim 4 is characterized in that, also comprises:
When the current data of described Wave data equaled the last secondary data of described Wave data, locating described system state was plateau;
Whether the current data of judging described Wave data is greater than maximum crest data; And
When the current data of described Wave data during greater than maximum crest data, described current data is recorded as maximum crest data, current time of described current data is recorded as zero-time.
9. crest seeking system comprises:
The Wave data acquisition module is used to gather the Wave data of input;
The system state locating module, be used for the Wave data gathered according to described Wave data acquisition module current data and last time the data locking system state; And
The crest location determination module is used for determining crest location according to the system state of described system state locating module location.
10. will remove 9 described crest seeking systems as right, it is characterized in that, described system state locating module comprises:
Data threshold values comparison judgment unit is used to judge the current data of the Wave data that described Wave data acquisition module is gathered and goes up secondary data whether greater than opening threshold values,
Accept selected cell, be used for judging on the Wave data secondary data and during less than described unlatching threshold values, judge whether to accept peak value greater than described unlatching threshold values and described current data when described data threshold values comparison judgment unit;
The last time-the current data comparison judgment unit, be used for when described data threshold values comparison judgment unit is judged the last secondary data of Wave data and current data all greater than described unlatching threshold values, whether the current data of judging described Wave data is greater than the last secondary data of described Wave data; And
The system state positioning unit is used for the judged result positioning system state according to described last time-current data comparison judgment unit.
CN2009102723061A 2009-09-30 2009-09-30 Wave crest seeking method and wave crest seeking system Expired - Fee Related CN101692149B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
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CN102098101A (en) * 2011-01-04 2011-06-15 武汉理工大学 Crest searching method and system
CN102435214A (en) * 2011-09-20 2012-05-02 华北电力大学(保定) High-precision and fast optical fiber grating spectrum peak-searching method
CN103913765A (en) * 2014-03-24 2014-07-09 中国船舶重工集团公司第七一九研究所 Nuclide energy spectrum peak searching method
CN110260898A (en) * 2019-06-24 2019-09-20 武汉理工光科股份有限公司 Jamproof grating wavelength demodulation method and system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102098101A (en) * 2011-01-04 2011-06-15 武汉理工大学 Crest searching method and system
CN102098101B (en) * 2011-01-04 2013-05-08 武汉理工大学 Crest searching method and system
CN102435214A (en) * 2011-09-20 2012-05-02 华北电力大学(保定) High-precision and fast optical fiber grating spectrum peak-searching method
CN102435214B (en) * 2011-09-20 2014-02-12 华北电力大学(保定) High-precision and fast optical fiber grating spectrum peak-searching method
CN103913765A (en) * 2014-03-24 2014-07-09 中国船舶重工集团公司第七一九研究所 Nuclide energy spectrum peak searching method
CN103913765B (en) * 2014-03-24 2016-08-31 中国船舶重工集团公司第七一九研究所 A kind of nucleic power spectrum Peak Search Method
CN110260898A (en) * 2019-06-24 2019-09-20 武汉理工光科股份有限公司 Jamproof grating wavelength demodulation method and system
CN110260898B (en) * 2019-06-24 2021-07-06 武汉理工光科股份有限公司 Anti-interference grating wavelength demodulation method and system

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