CN106501582B - Signal base line processing method and signal base line processing equipment - Google Patents
Signal base line processing method and signal base line processing equipment Download PDFInfo
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- CN106501582B CN106501582B CN201610952613.4A CN201610952613A CN106501582B CN 106501582 B CN106501582 B CN 106501582B CN 201610952613 A CN201610952613 A CN 201610952613A CN 106501582 B CN106501582 B CN 106501582B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/04—Measuring peak values or amplitude or envelope of ac or of pulses
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
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Abstract
The present invention provides a kind of signal base line processing method and signal base line processing equipment, is applied to kernel analysis instrument field, which comprises obtains the sampled data obtained after sampling to pulse signal；Baseline calculating is carried out to the sampled data of acquisition, obtains the first baseline value；First baseline value is subjected to baseline drift differentiation, differentiates that result obtains the second baseline value based on the baseline drift；The baseline that the pulse signal is adjusted based on second baseline value, the pulse signal after obtaining simultaneously output adjustment.Signal base line processing method of the invention and equipment, need the baseline value adjusted come the baseline of feedback adjustment signal by calculating to the pulse signal sampling of input, to reach the real-time recovery processing to signal base line, so that pulse signal baseline stability, reduces the influence due to baseline to each element peak position offset in measurement spectral line.
Description
Technical field
The present invention relates to kernel analysis instrument fields, in particular to a kind of signal base line processing method and signal base line
Processing equipment.
Background technique
With the progress and development of science, the application field of Nuclear Instruments And Industrial Gauges is also more and more extensive, almost covers agricultural, work
The fields such as industry, health care, geology and mine, environmental protection, space flight, teaching, scientific research, customs, this is allowed for for signal measurement
Accuracy become to be even more important.
In pulse spectrometer, due to detector leakage current, the pole-zero cancellation processing of difference and electronics component temperature drift, hand over
Flowing power supply ripple etc. influences, and useful signal is always superimposed upon in a unstable baseline voltage level, and is carrying out signal
When measurement, the baseline of signal can generate offset, when the amplitude of the signal of pulse characteristic identifies in signal, slowly fluctuate
Baseline will affect accurately identifying for the amplitude of the signal of pulse characteristic in signal, and in the prior art, to signal base line
Processing method is the average value for the estimation baseline that acquisition is obtained by algorithm, that is, after having acquired a spectral line, then baseline is calculated
Out, baseline at this time is usually a curve, then is averaged to baseline, deducts baseline in spectral line data again later.It should
Method does not provide the time of Primary regulation period consumption, so there are queries in real-time.Furthermore such method is namely
Traditional has acquired the method for subtracting baseline again, and measurement accuracy is not high, is affected by baseline drift, so as to cause baseline pair
The bias effect for measuring each element peak position in spectral line is larger.
Summary of the invention
In view of this, the embodiment of the present invention is designed to provide a kind of signal base line processing method and signal base line processing
Equipment is unable to the processing of real-time perfoming pulse signal baseline restorer to solve that measurement cannot be followed to pulse signal in the prior art,
Cause the problem that baseline is larger to the bias effect of each element peak position in measuring signal spectral line.
In a first aspect, the embodiment of the invention provides a kind of signal base line processing methods, which comprises obtain to arteries and veins
Rush the sampled data obtained after signal is sampled；Baseline calculating is carried out to the sampled data of acquisition, obtains the first baseline value；It will
First baseline value carries out baseline drift differentiation, differentiates that result obtains the second baseline value based on the baseline drift；Based on institute
The baseline that the second baseline value adjusts the pulse signal is stated, the pulse signal after obtaining simultaneously output adjustment.
Further, the sampled data that the acquisition obtains after sampling to pulse signal, comprising: to the arteries and veins received
It rushes signal progress multiple repairing weld and obtains sampled data, the sampled data includes N number of sample point data after each sampling.
Further, the multiple repairing weld is 1024 samplings.
Further, the sampled data of described pair of acquisition carries out baseline calculating, obtains the first baseline value, comprising: obtains every
The sample point data minimum value in N number of sample point data after the secondary sampling, obtains multiple sample point data minimum values；To more
A sample point data minimum value carries out average value processing, obtains the first baseline value.
Further, the N is 16384 or 32768.
Further, described that first baseline value is subjected to baseline drift differentiation, obtain the second baseline value, comprising: will be described
First baseline value is compared with preset reference baseline value, obtains the second baseline value according to comparison result.
Further, first baseline value and the preset reference baseline value is are subtracted each other institute by the comparison result
The difference obtained, the resulting difference is second baseline value.
Second aspect, the embodiment of the invention provides a kind of signal base line processing equipment, the signal base line processing equipment
Including control device and data processing equipment；The data processing equipment, after being sampled for acquisition to pulse signal
The sampled data arrived carries out baseline calculating to the sampled data of acquisition, obtains the first baseline value；The control device, being used for will
First baseline value carries out baseline drift differentiation, differentiates that result obtains the second baseline value based on the baseline drift, is based on institute
The baseline that the second baseline value adjusts the pulse signal is stated, the pulse signal after obtaining simultaneously output adjustment.
Further, the data processing equipment includes sampler and baseline calculator；The sampler, for docking
The pulse signal received carries out multiple repairing weld and obtains the sampled data, and the sampled data includes the N after each sampling
A sample point data；Baseline calculator samples most every time for obtaining in N number of sample point data after each sampling
Small value obtains multiple sampling minimum values；Average value processing is carried out to multiple sampling minimum values, obtains the first baseline value.
Further, the control device includes MCU controller, digital analog converter and operational amplifier；The MCU control
Device processed obtains carrying the based on baseline drift differentiation result for first baseline value to be carried out baseline drift differentiation
The digital signal of two baseline values；The digital signal for carrying the second baseline value is passed into the digital analog converter；The number
Mode converter is used to being converted to the digital signal for carrying the second baseline value into the analog signal for carrying the second baseline value, by institute
The analog signal for stating the second baseline value of carrying passes to the operational amplifier；The operational amplifier, for being taken based on described
Analog signal with the second baseline value adjusts the baseline of the pulse signal, the pulse signal after obtaining simultaneously output adjustment.
The beneficial effects of the present invention are:
The present invention provides a kind of signal base line processing method and signal base line processing equipment, passes through the pulse after sampling and believes
Number baseline calculating is carried out, obtains the first baseline value, then the first baseline value is compared with the baseline value of preset reference, pass through ratio
Relatively result exports the second baseline value, adjusts the baseline of the pulse signal based on the second baseline value, and by arteries and veins adjusted
Signal output is rushed, pulse signal is carried out that measurement is followed to carry out that is, by feedback regulation to pulse signal by this method
It just completes to be deducted the baseline of pulse signal before sampling, that is to say, that being equivalent to can be extensive in real time to the progress of the baseline of signal
Multiple processing reduces influence of the baseline to each element peak position offset in measurement spectral line in this way.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, partly be become from specification
It is clear that by implementing understanding of the embodiment of the present invention.The objectives and other advantages of the invention can be by written theory
Specifically noted structure is achieved and obtained in bright book, claims and attached drawing.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of flow chart of signal base line processing method provided in an embodiment of the present invention；
Fig. 2 is the flow chart of another signal base line processing method provided in an embodiment of the present invention；
Fig. 3 is a kind of signal spectrum schematic diagram provided in an embodiment of the present invention；
Fig. 4 is another signal spectrum schematic diagram provided in an embodiment of the present invention；
Fig. 5 is a kind of structural block diagram of signal base line processing equipment provided in an embodiment of the present invention；
Fig. 6 is the structural block diagram of another signal base line processing equipment provided in an embodiment of the present invention.
Icon: 100- signal base line processing equipment；110- data processing equipment；120- control device；112- sampler；
114- baseline calculator；122- controller；124- digital analog converter；126- operational amplifier.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile of the invention
In description, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Fig. 1 is please referred to, Fig. 1 is a kind of flow chart of signal base line processing method provided in an embodiment of the present invention.The side
Method specifically includes step S100, obtains the sampled data obtained after sampling to pulse signal；Step S200, adopts acquisition
Sample data carry out baseline calculating, obtain the first baseline value；First baseline value is carried out baseline drift differentiation by step S300,
Differentiate that result obtains the second baseline value based on the baseline drift；Step S400 adjusts the arteries and veins based on second baseline value
The baseline for rushing signal, the pulse signal after obtaining simultaneously output adjustment.
Wherein, step S100 obtains the sampled data obtained after sampling to pulse signal, specifically includes: to reception
To pulse signal carry out multiple repairing weld and obtain sampled data, the sampled data includes N number of sampling number after each sampling
According to.
Specifically, when detecting the pulse signal of input, multiple repairing weld, sampling at this moment are carried out to the pulse signal of input
Frequency can be 100MHZ, can acquire N number of sample point data every time, and N can be 16384 or 32768 sample point datas, here
Sample point data be not limited only to 16384 or 32768, also can according to need the sampling number for carrying out selecting other numbers
According to each sample point data is digital value, repeats multiple repairing weld, carries out 1024 samplings to pulse signal in the present embodiment
After obtain sampled data.
Step S200 carries out baseline calculating to the sampled data of acquisition, obtains the first baseline value, referring to figure 2., Fig. 2 is
The flow chart of another kind signal base line processing method provided in an embodiment of the present invention, step S200 (such as Fig. 1) specifically include step
S210 and step S220.
Step S210, the sample point data minimum value in N number of sample point data after obtaining each sampling, obtains more
A sample point data minimum value.
Step S220 carries out average value processing to the multiple sample point data minimum value, obtains the first baseline value.
Specifically, 16384 or 32768 sample point datas collected in step S100 (such as Fig. 1) are compared or
Sequence finally takes a minimum value in each sample point data collected, and minimum value here refers in sample point data
Digital value minimum value, so every time sample can use a minimum value, 1024 minimum values can be obtained by carrying out 1024 samplings, right
This 1024 minimum values carry out average value processing, and average value processing here is understood that: average value refers to arithmetic mean of instantaneous value, i.e.,
1024 minimum value summations, then resulting and value can be obtained into average value divided by 1024, resulting average value is as first
Baseline value output.
Please continue to refer to Fig. 1, step S300, first baseline value is subjected to baseline drift differentiation, is based on the baseline
Drift differentiates that result obtains the second baseline value.
Specifically, average value calculated in step S200, that is, the first baseline value are referred into base with pre-set
Line value is compared, if the first baseline value is bigger than pre-set reference baseline value, is just subtracted the first baseline value pre-
The reference baseline value being first arranged, obtained difference is as the second baseline value；If the first baseline value is than pre-set reference baseline
It is worth small, pre-set reference baseline value is subtracted into the first baseline value, obtained difference is as the second baseline value；If the first baseline
Value is equal with pre-set reference baseline value, then pre-set reference baseline value is subtracted the first baseline value, obtains
Difference is used as the second baseline value；It should be noted that " big " here, " small ", " equal " refer to comparison numerically.
Here the second baseline value obtained is the digital signal for carrying the second baseline value.
Step S400 adjusts the baseline of the pulse signal based on second baseline value, obtains and after output adjustment
Pulse signal.
Because sample frequency is 100MHZ, that is, 12bit precision, the amplitude range of pulse signal input can be 0-
2V, that is to say, that voltage value 2V is divided into 212, then minimum scale unit is about 0.5mV, pre-set reference baseline value can
Think 0.5mV-10mV, best effect can be 0.5mV.
Specifically, second baseline value is the analog signal for carrying the second baseline value, and the second baseline value is pulse signal
The amplitude for needing to adjust, it will be understood that, for example, pre-set reference baseline value is 0.5mV, the first baseline value is
0.3mV, then the second baseline value is just 0.2mV, if one of amplitude of pulse signal is 0.6mV, at this moment 0.6mV is greater than
0.5mV, so needing to deduct baseline value 0.2mV；If one of amplitude of pulse signal is 0.4mV, 0.4mV is less than
0.5mV adjusts the baseline of pulse signal in this approach, so then just need to be lifted signal amplitude plus baseline value 0.2mV
The signal after being adjusted is exported to step S100 again afterwards, that is, adjusts the amplitude of pulse signal by feeding back, entirely
The regulating cycle time is about 1S, so that the amplitude of pulse signal is in stable state, to improve energy resolution.
The second baseline value in step S400 refer in step S300 by carry the second baseline value digital signal conversion Lai
The second baseline value of carrying analog signal.
Referring to figure 3., Fig. 4, Fig. 3 are a kind of signal spectrum schematic diagram provided in this embodiment, and Fig. 4 is the embodiment of the present invention
Another signal spectrum schematic diagram of offer.Comparison diagram 3 and Fig. 4, monokaryon element compose the reference standard as double-core element spectral peak position, letter
It number is double-core element spectrum 1 without removing the spectral line of Baseline Survey, double-core element spectrum 21 is removed the spectrum after baseline for double-core element spectrum, can be seen
It does not go the double-core element of baseline to compose 1 into Fig. 1 to compose relative to monokaryon element, wave crest is disturbed to drift about to the left, and removes baseline
What the wave crest of double-core element spectrum 2 do not influenced substantially by, so this programme carries out real-time baseline restorer processing to signal, so that
Signal will not be affected in transmission process by the external world, and the wave crest of signal signal in transmission process not will receive largely
Offset.
Referring to figure 5., the structural block diagram of a kind of signal base line processing equipment 100 provided in an embodiment of the present invention, the letter
Number Baseline Survey equipment includes data processing equipment 110 and control device 120.
The data processing equipment 110, for obtain pulse signal is sampled after obtained sampled data, to acquisition
Sampled data carry out baseline calculating, obtain the first baseline value.
The control device 120 is based on the baseline drift for first baseline value to be carried out baseline drift differentiation
Differentiate that result obtains the second baseline value, the baseline of the pulse signal is adjusted based on second baseline value, obtains and exports tune
Pulse signal after whole.
Specifically, Fig. 6 is please referred to, Fig. 6 is the second of a kind of signal base line processing equipment 100 provided in an embodiment of the present invention
Structural block diagram, the data processing equipment 110 (such as Fig. 5) include sampler 112 and baseline calculator 114.
The sampler 112 obtains the sampled data for carrying out multiple repairing weld to the pulse signal received,
The sampled data includes N number of sample point data after each sampling.
Wherein, the sampler 112 can be analog-digital converter, i.e. A/D converter, typically refer to one for analog signal
It is changed into the electronic component of digital signal.Common analog-digital converter is that an input voltage signal is converted to an output
Digital signal.The effect of A/D converter in the present embodiment is by Time Continuous, amplitude also continuous analog pulse signal conversion
For time discrete, amplitude also discrete digital signal.
Baseline calculator 114, for obtaining in N number of sample point data after each sampling, the minimum sampled every time
Value, obtains multiple sampling minimum values；Average value processing is carried out to the multiple sampling minimum value, obtains the first baseline value.
The baseline calculator 114 can be based on FPGA (Field-Programmable Gate Array), i.e., existing
It is carried out in programmable gate array, is also based on CPLD (Complex Programmable Logic Device), i.e., it is complicated
What programmable logic device carried out, main function is will to sample obtained sampled data to obtain the first baseline value by calculating.
The control device 120 (such as Fig. 5) includes controller 122, digital analog converter 124 and operational amplifier 126.
The controller 122 is sentenced for first baseline value to be carried out baseline drift differentiation based on the baseline drift
Other result obtains carrying the digital signal of the second baseline value；The digital signal for carrying the second baseline value is passed into the number
Mode converter 124.
Specifically, the arithmetic unit be for first baseline value to be compared with preset reference baseline value, according to
Comparison result obtains the second baseline value, and the comparison result is to carry out first baseline value and the preset reference baseline value
Subtract each other resulting difference, the resulting difference is second baseline value.
Wherein, the preset reference baseline value refers to be pre-deposited in the controller 122 by PC machine and temporarily be deposited
Storage, it is also possible to when controller 122 receives first baseline value, then that obtains preset reference baseline value from PC, most
The second baseline value of acquisition is transmitted to PC by controller 122 afterwards.
Controller 122 is also possible to a kind of IC chip, has signal handling capacity.122 device of above controller can
To be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit
(Network Processor, abbreviation NP) etc.；Can also be digital signal processor (DSP), specific integrated circuit (ASIC),
Ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hard
Part component.It may be implemented or execute disclosed each method, step and logic diagram in the embodiment of the present application.General procedure
Device can be microprocessor or the processor is also possible to any conventional processor etc..
In the present embodiment, controller 122 can be based on MCU (Micro Control Unit), i.e. single-chip microcontroller, or
It is ARM (Advanced RISC Machine), i.e. processor, for realizing the device for carrying out drift differentiation to the first baseline value.
The digital analog converter 124, which is used to be converted to the digital signal for carrying the second baseline value, carries the second baseline
The analog signal for carrying the second baseline value is passed to the operational amplifier 126 by the analog signal of value.
The analog-digital converter, i.e. D/A converter refer to the device for digital quantity being converted into simulation, are that will control here
The calculated analog signal for carrying the second baseline value of device 122 is converted to the digital signal for carrying the second baseline value, then will carry
The digital signal of second baseline value passes to operational amplifier 126.
The operational amplifier 126, for adjusting the pulse letter based on the analog signal for carrying the second baseline value
Number baseline, obtain and output adjustment after pulse signal.
Specifically, operational amplifier 126 is the circuit unit with very high-amplification-factor.In actual circuit, it usually ties
It closes feedback network and collectively constitutes certain functional module.It is a kind of amplifier with special Coupling circuit and feedback.It is exported
Signal can be input signal and add, subtract or the result of the mathematical operations such as differential, integral.Operational amplifier 126 is in the present embodiment
The baseline value for the pulse signal for carrying the analog signal and input of the second baseline value is subjected to plus and minus calculation, adjusts pulse signal
Baseline, and pulse signal adjusted is input to PC machine.
It should be strongly noted that when controller 122 directly exports the analog signal of the second baseline value of carrying, then just not
It needs again to converted the second baseline value with digital analog converter 124.
It is apparent to those skilled in the art that for convenience and simplicity of description, the signal of foregoing description
The specific work process of Baseline Survey equipment no longer can excessively repeat herein with reference to the corresponding process in preceding method.
In conclusion the present invention provides a kind of signal base line processing method and signal base line processing equipment, by that will sample
Pulse signal afterwards carries out baseline calculating, obtains the first baseline value, then the first baseline value and the baseline value of preset reference are carried out
Compare, the second baseline value is exported by comparing result, the baseline of the pulse signal is adjusted based on the second baseline value, and will
Output of pulse signal adjusted carries out pulse signal to follow measurement by this method, i.e., by feedback regulation, to arteries and veins
It rushes and just completes to be deducted the baseline of pulse signal before signal is sampled, as soon as the regulating cycle time is about 1S,
It is to say to be equivalent to and can carry out real-time recovery processing to the baseline of signal, reduces baseline in this way to each element in measurement spectral line
The influence of peak position.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, flow chart and block diagram in attached drawing
Show the device of multiple embodiments according to the present invention, the architectural framework in the cards of method and computer program product,
Function and operation.In this regard, each box in flowchart or block diagram can represent the one of a module, section or code
Part, a part of the module, section or code, which includes that one or more is for implementing the specified logical function, to be held
Row instruction.It should also be noted that function marked in the box can also be to be different from some implementations as replacement
The sequence marked in attached drawing occurs.For example, two continuous boxes can actually be basically executed in parallel, they are sometimes
It can execute in the opposite order, this depends on the function involved.It is also noted that every in block diagram and or flow chart
The combination of box in a box and block diagram and or flow chart can use the dedicated base for executing defined function or movement
It realizes, or can realize using a combination of dedicated hardware and computer instructions in the system of hardware.
In addition, each functional module in each embodiment of the present invention can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.It needs
Illustrate, herein, relational terms such as first and second and the like be used merely to by an entity or operation with
Another entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this realities
The relationship or sequence on border.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (8)
1. a kind of signal base line processing method, which is characterized in that the described method includes:
Obtain the sampled data obtained after sampling to pulse signal；
Baseline calculating is carried out to the sampled data of acquisition, obtains the first baseline value；
First baseline value is subjected to baseline drift differentiation, differentiates that result obtains the second baseline value based on the baseline drift；
The baseline that the pulse signal is adjusted based on second baseline value, the pulse signal after obtaining simultaneously output adjustment；
Wherein, the sampled data of described pair of acquisition carries out baseline calculating, obtains the first baseline value, comprising:
The sample point data minimum value in N number of sample point data after obtaining the sampling every time, obtains multiple sample point datas
Minimum value；
Average value processing is carried out to multiple sample point data minimum values, obtains the first baseline value.
2. the method according to claim 1, wherein it is described acquisition pulse signal is sampled after obtain adopt
Sample data, comprising:
Multiple repairing weld is carried out to the pulse signal received and obtains sampled data, the sampled data includes the N after each sampling
A sample point data.
3. according to the method described in claim 2, it is characterized in that, the multiple repairing weld is 1024 samplings.
4. according to the method in claim 2 or 3, which is characterized in that the N is 16384 or 32768.
5. being obtained the method according to claim 1, wherein described carry out baseline drift differentiation for the first baseline value
To the second baseline value, comprising:
First baseline value is compared with preset reference baseline value, the second baseline value is obtained according to comparison result.
6. according to the method described in claim 5, it is characterized in that, the comparison result be by first baseline value with it is described
Preset reference baseline value carries out subtracting each other resulting difference, and the resulting difference is second baseline value.
7. a kind of signal base line processing equipment, which is characterized in that the equipment includes control device and data processing equipment；
The data processing equipment, for obtain pulse signal is sampled after obtained sampled data, sampling to acquisition
Data carry out baseline calculating, obtain the first baseline value；
The control device differentiates knot based on the baseline drift for first baseline value to be carried out baseline drift differentiation
Fruit obtains the second baseline value, and the baseline of the pulse signal is adjusted based on second baseline value, obtains and after output adjustment
Pulse signal；
Wherein, the data processing equipment includes sampler and baseline calculator；
The sampler obtains the sampled data for carrying out multiple repairing weld to the pulse signal received, described to adopt
Sample data include N number of sample point data after each sampling；
Baseline calculator, for obtaining in N number of sample point data after each sampling, the minimum value sampled every time is obtained
Multiple sampling minimum values；Average value processing is carried out to multiple sampling minimum values, obtains the first baseline value.
8. equipment according to claim 7, which is characterized in that the control device include controller, digital analog converter with
And operational amplifier；
The controller differentiates result based on the baseline drift for first baseline value to be carried out baseline drift differentiation
Obtain carrying the digital signal of the second baseline value；The digital signal for carrying the second baseline value is passed into the digital-to-analogue conversion
Device；
The digital analog converter is used to being converted to the digital signal for carrying the second baseline value into the mould for carrying the second baseline value
The analog signal for carrying the second baseline value is passed to the operational amplifier by quasi- signal；
The operational amplifier, for adjusting the base of the pulse signal based on the analog signal for carrying the second baseline value
Line, the pulse signal after obtaining simultaneously output adjustment.
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| CN201610952613.4A CN106501582B (en) | 2016-11-02 | 2016-11-02 | Signal base line processing method and signal base line processing equipment |
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| CN201610952613.4A CN106501582B (en) | 2016-11-02 | 2016-11-02 | Signal base line processing method and signal base line processing equipment |
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| CN106501582A CN106501582A (en) | 2017-03-15 |
| CN106501582B true CN106501582B (en) | 2019-03-15 |
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