CN102175918B - A realization method and device of a general digital detector - Google Patents
A realization method and device of a general digital detector Download PDFInfo
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Abstract
The invention discloses a universal digital geophone implementation method and a device. The implementation method comprises the following steps: reading amplitude signal data points from a collection module, and segmenting the read amplitude signal data points according to an extraction coefficient; detecting the amplitude signal data points according to the segments; and outputting the detection result. According to the technical scheme in the invention, the detection of a frequency spectrometer by any data length can be achieved in real time by using the strong processing capability of a digital device, a microprocessor or a computer, thereby achieving the detection efficiency and the accuracy. Meanwhile, the method can lower the dependence of the system to the hardware and lower the system cost, thereby effectively improving the batch production capacity of frequency spectrometers or instruments with similar function.
Description
Technical field
The present invention relates to frequency spectrograph data acquisition technology field, relate in particular to a kind of implementation method and device of Universal digital geophone.
Background technology
Present frequency spectrograph adopts analog device to realize detection more, mode with different wave detectors and switch combination realizes multiple detecting way, due to the impact that is subjected to the factors such as analog device performance, volume and temperature characterisitic, not only bad for the miniaturization that realizes frequency spectrograph, and easy drawing-in system error, the debugging work load that increases research and development and produce.Can effectively solve above-mentioned shortcoming with the Digital Implementation wave detector.Along with the raising of digitized degree, how realize the function of frequency spectrograph analog front end circuit with digitizing technique, be those skilled in the art's problem demanding prompt solutions.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of implementation method and device of Universal digital geophone is provided, and replaces the frequency spectrograph analog front end circuit to realize the detection function with digitizing technique, is beneficial to the miniaturization of frequency spectrograph and improved efficient and the accuracy of detection.
The technical solution used in the present invention is that the implementation method of described Universal digital geophone comprises:
Read the range signal data point from acquisition module, based on extracting coefficient, the range signal data point that reads is carried out segmentation;
The range signal data point is carried out respectively detection according to segmentation;
Output detection result.
Further, the described range signal data that read from acquisition module are carried out segmentation based on extracting coefficient to the range signal data that read, and specifically comprise:
When reading the range signal data point from acquisition module, for each range signal data point, numbering is set according to the order that reads, described numbering is to be spaced apart 1 integer;
To the range signal data point that reads from acquisition module at every turn, successively the product that extracts coefficient and numbering is rounded from small to large according to numbering, round the identical range signal data point of numerical value that obtains and belong to same segmentation.
Further, described extraction coefficient equal that the user sets output amplitude number of signals strong point number divided by all range signal data point numbers for the treatment of detection in acquisition module.
Further, the mode of described detection comprises: standard detection, average detection, positive peak detection, negative peak detection and sampling detection.
Further, described output detection result specifically comprises:
When carrying out detection according to the standard detecting way, judge whether range signal data point corresponding to positive peak is noise, if not noise is exported the amplitude positive peak as the detection result; If noise further judges whether the number of the range signal data point of current segmentation is even number, if the amplitude positive peak is exported as the detection result, otherwise the amplitude negative peak is exported as the detection result;
When carrying out detection according to the average detecting way, amplitude mean value is exported as the detection result;
When carrying out detection according to the positive peak detecting way, the amplitude positive peak is exported as the detection result;
When carrying out detection according to the negative peak detecting way, the amplitude negative peak is exported as the detection result;
When carrying out detection according to the sampling detecting way, the amplitude intermediate value is exported as the detection result.
The application also provides a kind of implement device of Universal digital geophone, comprising:
Read module is used for reading the range signal data point from acquisition module;
Segmentation module is used for based on extracting coefficient, the range signal data point that reads being carried out segmentation;
The detection module is used for the range signal data point is carried out respectively detection according to segmentation;
Output module is used for output detection result.
Further, described read module is further used for: when reading the range signal data point from acquisition module, for each range signal data point, numbering is set according to the order that reads, described numbering is to be spaced apart 1 integer;
Described segmentation module is further used for: the range signal data point that read module is read from acquisition module at every turn, successively the product that extracts coefficient and numbering is rounded from small to large according to numbering, incorporate in same segmentation rounding the identical range signal data point of numerical value that obtains.
Further, described extraction coefficient equal that the user sets output amplitude number of signals strong point number divided by all range signal data point numbers for the treatment of detection in acquisition module.
Further, described detection module is further used for: according to the detecting way of user's appointment, the range signal data point is carried out respectively detection according to segmentation;
Described detection module specifically comprises:
Standard detection submodule is used for obtaining amplitude positive peak and amplitude negative peak by the range signal data point being carried out the standard detection;
Average detection submodule is used for obtaining amplitude mean value by the range signal data point is carried out the average detection;
Positive peak detection submodule is used for obtaining the amplitude positive peak by the range signal data point is carried out the positive peak detection;
Negative peak detection submodule is used for obtaining the amplitude negative peak by the range signal data point is carried out the negative peak detection;
Sampling detection submodule is used for obtaining the amplitude intermediate value by detection that the range signal data point is taken a sample.
Further, described output module specifically comprises:
The standard output submodule is connected with standard detection submodule, is used for judging whether range signal data point corresponding to positive peak is noise, if not noise is exported the amplitude positive peak as the detection result; If noise further judges whether the number of the range signal data point of current segmentation is even number, if the amplitude positive peak is exported as the detection result, otherwise the amplitude negative peak is exported as the detection result;
The average output sub-module is connected with average detection submodule, is used for amplitude mean value is exported as the detection result;
The posivtive spike output sub-module is connected with positive peak detection submodule, is used for the amplitude positive peak is exported as the detection result;
The negative peak output sub-module is connected with negative peak detection submodule, is used for the amplitude negative peak is exported as the detection result;
The sampling output sub-module is connected with sampling detection submodule, is used for the amplitude intermediate value is exported as the detection result.
Adopt technique scheme, the present invention has following advantages at least:
The implementation method of Universal digital geophone of the present invention and device read the range signal data point from acquisition module, according to extracting coefficient, the range signal data point that reads is carried out segmentation; The range signal data point is carried out respectively detection according to segmentation; Output detection result.Adopt the method and device, can take full advantage of the powerful processing power of digital device, microprocessor or computing machine, complete in real time the detection function of frequency spectrograph arbitrary data, improved efficient and the accuracy of detection.Simultaneously, can reduce system to the dependence ability of hardware, reduce system cost, thereby effectively improve frequency spectrograph or have the mass production capabilities of similar functions instrument.
Description of drawings
Fig. 1 is the implementation method process flow diagram of Universal digital geophone described in first embodiment of the invention;
Fig. 2 is that the implement device of Universal digital geophone described in second embodiment of the invention forms schematic diagram.
Fig. 3 is for adopting a digital detection example flow chart of technical solution of the present invention;
Fig. 4 is the particular flow sheet of detection algorithm in Fig. 3.
Embodiment
Reach for further setting forth the present invention technological means and the effect that predetermined purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in detail as after.
First embodiment of the invention, a kind of implementation method of Universal digital geophone as shown in Figure 1, comprising:
S101 when reading the range signal data point from acquisition module, arranges numbering according to the order that reads for each range signal data point, and this numbering is to be spaced apart 1 integer, such as: 0,1,2 ....The acquisition module of digital geophone front end is generally modulus switching device, the number of each range signal data point that reads from acquisition module is subjected to the restriction of acquisition module hardware performance, if can not once read all range signal data point numbers for the treatment of detection, need repeatedly to read.
S102 to the range signal data point that reads from acquisition module at every turn, rounds the product that extracts coefficient and numbering from small to large successively according to numbering, rounds the identical range signal data point of numerical value that obtains and belongs to same segmentation.The output amplitude number of signals strong point number that extracts that coefficient equals that the user sets is divided by all range signal data point numbers for the treatment of detection in acquisition module.
S103 carries out respectively detection to the range signal data point according to segmentation.The mode of detection comprises: standard detection, average detection, positive peak detection, negative peak detection and sampling detection.The user can specify wherein, and any one detecting way carries out detection.
S104, output detection result.Concrete,
When carrying out detection according to the standard detecting way, comprise following concrete steps:
A1 judges whether range signal data point corresponding to positive peak is noise, if noise, jump procedure A2; If not noise, jump procedure A3; In this area, judge that whether range signal data point corresponding to positive peak be that the method for noise is a lot, such as, the amplitude of the previous and rear data point of range signal data point that positive peak is corresponding with it compares, if the amplitude of a previous and rear data point is all less than more than positive peak 3dB, the range signal data point that this positive peak is corresponding does not belong to noise, otherwise belongs to noise.
A2 judges whether the number of the range signal data point of current segmentation is odd number, if, jump procedure A3, otherwise jump procedure A4;
A3 exports the amplitude positive peak as the detection result;
A4 exports the amplitude negative peak as the detection result.
When carrying out detection according to the average detecting way, amplitude mean value is exported as the detection result.
When carrying out detection according to the positive peak detecting way, the amplitude positive peak is exported as the detection result.
When carrying out detection according to the negative peak detecting way, the amplitude negative peak is exported as the detection result.
When carrying out detection according to the sampling detecting way, the amplitude intermediate value is exported as the detection result.
Second embodiment of the invention, a kind of implement device of Universal digital geophone as shown in Figure 2, comprising:
1) read module when being used for reading the range signal data point from acquisition module, arranges numbering according to the order that reads for each range signal data point, and this numbering is to be spaced apart 1 integer, such as: 0,1,2 ....The acquisition module of digital geophone front end is generally modulus switching device, the number of each range signal data point that reads from acquisition module is subjected to the restriction of acquisition module hardware performance, if can not once read all range signal data point numbers for the treatment of detection, need repeatedly to read.
2) segmentation module, for the range signal data point that read module is read from acquisition module at every turn, successively the product that extracts coefficient and numbering is rounded from small to large according to numbering, incorporate in same segmentation rounding the identical range signal data point of numerical value that obtains.The output amplitude number of signals strong point number that extracts that coefficient equals that the user sets is divided by all range signal data point numbers for the treatment of detection in acquisition module.
3) detection module is used for according to the detecting way of user's appointment, the range signal data point being carried out respectively detection according to segmentation.This detection module specifically comprises:
Standard detection submodule is used for obtaining amplitude positive peak and amplitude negative peak by the range signal data point being carried out the standard detection;
Average detection submodule is used for obtaining amplitude mean value by the range signal data point is carried out the average detection;
Positive peak detection submodule is used for obtaining the amplitude positive peak by the range signal data point is carried out the positive peak detection;
Negative peak detection submodule is used for obtaining the amplitude negative peak by the range signal data point is carried out the negative peak detection;
Sampling detection submodule is used for obtaining the amplitude intermediate value by detection that the range signal data point is taken a sample.
4) output module is used for output detection result.This output module specifically comprises:
The standard output submodule, be connected with standard detection submodule, be used for judging whether range signal data point corresponding to positive peak is noise, if noise, further judge whether the number of the range signal data point of current segmentation is odd number, if the amplitude positive peak is exported as the detection result, otherwise the amplitude negative peak is exported as the detection result; If not noise is exported the amplitude positive peak as the detection result;
The average output sub-module is connected with average detection submodule, is used for amplitude mean value is exported as the detection result;
The posivtive spike output sub-module is connected with positive peak detection submodule, is used for the amplitude positive peak is exported as the detection result;
The negative peak output sub-module is connected with negative peak detection submodule, is used for the amplitude negative peak is exported as the detection result;
The sampling output sub-module is connected with sampling detection submodule, is used for the amplitude intermediate value is exported as the detection result.
The below introduces one and adopts the technical scheme in first and second embodiment of the application the range signal data point to be carried out the example of detection in computing machine.
Suppose that in acquisition module, original pending all range signal data points are with array a[i] the form storage, namely inputting data point length is 103, the input data that read from the front end acquisition module can be amplitude data, can be also the frequency spectrum datas after processing through filtering, FFT.
After the detection that the user sets, output data point length is 10, with array b[j] the form storage, extract factor alpha=output data point length/input data point length=10/103 and approximate 0.0971.Suppose that acquisition module once can only return to 15 range signal data points, 103 range signal data points need to read number 7 times from acquisition module, return to 15 range signal data points at every turn, only return to for the last time 103%15=13 range signal data point for front 6 times.103 is whole frame length for completing always counting of a detection, and 15 is a frame length.
The digital detection process as described in Figure 3, the parameter that relates to is as follows:
I: the input array index, i.e. the numbering of range signal data point, i=0,1,2 ..., 102;
J: the output array index, j=0,1 ..., 9;
MOffset: the position (side-play amount) of the input array of processing last time;
N: the range signal data point number of each segmentation;
N: be the cumulative range signal data point number for the treatment of detection of current segmentation;
If i, j, mOffset, n, N, nLastLength initial value are that the process of 0 digital detection comprises the steps:
S1：i＝mOffset；
S2: read a frame amplitude number of signals strong point from acquisition module;
S3: judge i whether less than the digital length of present frame input add side-play amount mOffset's and, if, jump procedure S4, otherwise jump procedure S5;
S4: judgement (whether α * i) equals (j+1) after rounding, if, redirect S6, otherwise cumulative 1, the n of i is cumulative 1, jump procedure S3;
S5: judge whether i equals 102, if, jump procedure S15, otherwise redirect S11;
S6: in judgement, whether frame residue to count be 0, if, N=n, execution in step S7, otherwise N=n+nLastlength, execution in step S7;
S7: (α * i) equals N the data point execution detection algorithm of j after rounding to satisfying before;
S8: upper frame is remained the nLastlength zero clearing of counting, n zero clearing;
S9: the detection value is saved in output array b[j] in;
S10:j adds up 1, jump procedure S3;
S11: judgement (α * i) round after whether greater than j, if, jump procedure S12, otherwise redirect S13;
S12: to satisfy before (α * i) equals N the data point of j after rounding and carries out the detection algorithm, and with the nLastlength zero clearing of counting of upper frame residue, the n zero clearing is saved in output array b[j with the detection value] in, j adds up 1, jump procedure S14;
S13: in preservation, the frame residue nLastlength that counts is current n value, with the n zero clearing, preserves current j value;
S14: the value of preserving mOffset is i, jump procedure S1;
S15: (α * i) equals N=n the data point execution detection algorithm of j after rounding to satisfying before;
S16: the detection value is saved in output array b[j] in, flow process finishes.
Fig. 4 is detection algorithm flow chart of the present invention.Certain hop count group that length after segmentation is N is carried out detection.The detecting way that can select comprises: standard detection, average detection, positive peak detection, negative peak detection and sampling detection.Take the standard detection as example, obtain positive peak and the negative peak of array, according to the definition of standard detection, when the positive peak data point belongs to non-noise, positive peak is exported as the detection result; When the positive peak data point belongs to noise, when n is even number, positive peak as the output of detection result, when n is odd number, is exported negative peak as the detection result.
Adopt technical scheme of the present invention, can complete in real time the detection function of random length input data, can realize the digitizing of hardware capability, reduce detection to the dependence of hardware, thereby reduce system cost, reduce and produce debugging work load.The present invention can also utilize the powerful processing power of digital device, microprocessor or computing machine, improves detection speed and accuracy.Simultaneously, effectively reduce the requirement to storage depth, improve real-time.
By the explanation of embodiment, should be to reach technological means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the present invention, yet appended diagram only be to provide with reference to the use of explanation, the present invention is limited.
Claims (6)
1. the implementation method of a Universal digital geophone, is characterized in that, comprising:
Read the range signal data point from acquisition module, based on extracting coefficient, the range signal data point that reads is carried out segmentation;
The range signal data point is carried out respectively detection according to segmentation;
Output detection result;
The described range signal data point that reads from acquisition module is carried out segmentation based on extracting coefficient to the range signal data point that reads, and specifically comprises:
When reading the range signal data point from acquisition module, for each range signal data point, numbering is set according to the order that reads, described numbering is to be spaced apart 1 integer; To the range signal data point that reads from acquisition module at every turn, successively the product that extracts coefficient and numbering is rounded from small to large according to numbering, round the identical range signal data point of numerical value that obtains and belong to same segmentation;
Described extraction coefficient equals that the user sets output amplitude number of signals strong point number is divided by all range signal data point numbers for the treatment of detection in acquisition module.
2. the implementation method of Universal digital geophone according to claim 1, is characterized in that, the mode of described detection comprises: standard detection, average detection, positive peak detection, negative peak detection and sampling detection.
3. the implementation method of Universal digital geophone according to claim 2, is characterized in that, described output detection result specifically comprises:
When carrying out detection according to the standard detecting way, judge whether range signal data point corresponding to positive peak is noise, if not noise is exported the amplitude positive peak as the detection result; If noise further judges whether the number of the range signal data point of current segmentation is even number, if the amplitude positive peak is exported as the detection result, otherwise the amplitude negative peak is exported as the detection result;
When carrying out detection according to the average detecting way, amplitude mean value is exported as the detection result;
When carrying out detection according to the positive peak detecting way, the amplitude positive peak is exported as the detection result;
When carrying out detection according to the negative peak detecting way, the amplitude negative peak is exported as the detection result;
When carrying out detection according to the sampling detecting way, the amplitude intermediate value is exported as the detection result.
4. the implement device of a Universal digital geophone, is characterized in that, comprising:
Read module is used for reading the range signal data point from acquisition module;
Segmentation module is used for based on extracting coefficient, the range signal data point that reads being carried out segmentation;
The detection module is used for the range signal data point is carried out respectively detection according to segmentation;
Output module is used for output detection result;
Described read module is further used for: when reading the range signal data point from acquisition module, for each range signal data point, numbering is set according to the order that reads, described numbering is to be spaced apart 1 integer;
Described segmentation module is further used for: the range signal data point that read module is read from acquisition module at every turn, successively the product that extracts coefficient and numbering is rounded from small to large according to numbering, incorporate in same segmentation rounding the identical range signal data point of numerical value that obtains;
Described extraction coefficient equals that the user sets output amplitude number of signals strong point number is divided by all range signal data point numbers for the treatment of detection in acquisition module.
5. the implement device of Universal digital geophone according to claim 4, is characterized in that, described detection module is further used for: according to the detecting way of user's appointment, the range signal data point is carried out respectively detection according to segmentation;
Described detection module specifically comprises:
Standard detection submodule is used for obtaining amplitude positive peak and amplitude negative peak by the range signal data point being carried out the standard detection;
Average detection submodule is used for obtaining amplitude mean value by the range signal data point is carried out the average detection;
Positive peak detection submodule is used for obtaining the amplitude positive peak by the range signal data point is carried out the positive peak detection;
Negative peak detection submodule is used for obtaining the amplitude negative peak by the range signal data point is carried out the negative peak detection;
Sampling detection submodule is used for obtaining the amplitude intermediate value by detection that the range signal data point is taken a sample.
6. the implement device of Universal digital geophone according to claim 5, is characterized in that, described output module specifically comprises:
The standard output submodule is connected with standard detection submodule, is used for judging whether range signal data point corresponding to positive peak is noise, if not noise is exported the amplitude positive peak as the detection result; If noise further judges whether the number of the range signal data point of current segmentation is even number, if the amplitude positive peak is exported as the detection result, otherwise the amplitude negative peak is exported as the detection result;
The average output sub-module is connected with average detection submodule, is used for amplitude mean value is exported as the detection result;
The posivtive spike output sub-module is connected with positive peak detection submodule, is used for the amplitude positive peak is exported as the detection result;
The negative peak output sub-module is connected with negative peak detection submodule, is used for the amplitude negative peak is exported as the detection result;
The sampling output sub-module is connected with sampling detection submodule, is used for the amplitude intermediate value is exported as the detection result.
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| CN109725198B (en) * | 2017-10-31 | 2021-03-12 | 北京普源精电科技有限公司 | Afterglow generation method of frequency spectrograph and frequency spectrograph |
| CN109901124A (en) * | 2019-01-17 | 2019-06-18 | 上海民航华东空管工程技术有限公司 | A kind of on-air radio electrical signal detection and analysis system |
| CN110049511B (en) * | 2019-03-12 | 2021-10-08 | 南京航空航天大学 | A kind of random signal real-time statistical testing device and testing method thereof |
| CN110441599B (en) * | 2019-07-15 | 2021-05-28 | 深圳市鼎阳科技股份有限公司 | Detection method and device for frequency spectrograph and readable storage medium |
| CN118033234B (en) * | 2024-04-12 | 2024-07-19 | 成都玖锦科技有限公司 | Real-time processing method for ultra-large data volume spectrum data |
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