CN102540240A - Pulse amplitude analyzing circuit and pulse amplitude analyzer - Google Patents
Pulse amplitude analyzing circuit and pulse amplitude analyzer Download PDFInfo
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- CN102540240A CN102540240A CN2012100087063A CN201210008706A CN102540240A CN 102540240 A CN102540240 A CN 102540240A CN 2012100087063 A CN2012100087063 A CN 2012100087063A CN 201210008706 A CN201210008706 A CN 201210008706A CN 102540240 A CN102540240 A CN 102540240A
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Abstract
The invention is applicable to the field of signal detection, and provides a pulse amplitude analyzing circuit and a pulse amplitude analyzer. The pulse amplitude analyzing circuit comprises a charging unit, a signal discriminating unit, a control unit and a resetting unit. By using the pulse amplitude analyzing circuit and the pulse amplitude analyzer, through counting nuclear pulse signals through the signal discriminating unit, recording the peak value information of the nuclear pulse signals, controlling discharge by the control unit and outputting single-channel output signals self-adapting to the widths of the nuclear pulse signals, the carrying of the physical quantities with the widths of the nuclear pulse signals in the single-channel output signals is achieved; the information extraction quantity of the pulse amplitude analyzer is increased; and the application of the pulse amplitude analyzer is extended.
Description
Technical field
The invention belongs to the input field, relate in particular to a kind of pulse amplitude analysis circuit and pulse height analyzer.
Background technology
The nuclear physics signal is a series of pulse signals at random; A physical event is represented in each pulse, as when carrying out X-ray detection X, whenever detects a ray and will produce the pulse of a nuclear; The width of pulse comprises the temporal information of ray, and the amplitude of pulse comprises the energy information of ray.
Present pulse height analyzer is screened the nuclear pulse signal; Usually will examine the instrument that shift pulse signal is a standardized digital signal; Generally speaking, single track output signal is standard digital signals, and its width is identical; Can only be used for to carry the physical quantity that pulse width embodies to the nuclear step-by-step counting.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of pulse amplitude analysis circuit, is intended to solve existing pulse height analyzer and can't carries the physical quantity that pulse width embodies, the problem that the information extraction amount is low.
The embodiment of the invention is achieved in that a kind of pulse amplitude analysis circuit, is connected with the threshold value generation unit, and said threshold value generation unit has at least one threshold value output terminal, and said circuit comprises:
Charhing unit, the input end of said charhing unit receive the nuclear pulse signal, are used to utilize said nuclear pulse signal to charge, to write down the peak information of said nuclear pulse signal;
The signal screening unit; Said signal screening unit has at least one threshold value input end; The reference input of said signal screening unit is connected with the output terminal of said charhing unit, and the signal input part of said signal screening unit receives nuclear pulse signal, the threshold value input end of said signal screening unit and the corresponding connection of the threshold value output terminal of threshold value generation unit; Be used to extract the peak information of said nuclear pulse signal, output amplitude discriminator signal and peak value discriminator signal;
Control module; The first input end of said control module is connected with first output terminal of said signal screening unit; Second input end of said control module is connected with second output terminal of said signal screening unit; Said control module has a plurality of output terminals, is used for according to said amplitude discriminator signal and said peak value discriminator signal, exports first discharge control signal and second discharge control signal and the single track output signal that is adaptive to said nuclear pulse signal width respectively;
Reset unit; The voltage input end of said reset unit is connected with the output terminal of charhing unit; First control end of said reset unit is connected with first output terminal of said control module; Second control end of said reset unit is connected with second output terminal of said control module, and the output terminal of said reset unit is connected with the reset terminal of said control module, is used for according to said first discharge control signal and said second discharge control signal control discharge; The output reset signal resets said control module.
Another purpose of the embodiment of the invention is to provide the pulse height analyzer that adopts above-mentioned pulse amplitude analysis circuit.
In embodiments of the present invention; The nuclear pulse signal is counted, is write down the peak information of nuclear pulse signal through the signal screening unit; And by control module control discharge, output adaptive has realized in single track output signal, carrying the physical quantity of nuclear pulse signal width in the single track output signal of nuclear pulse signal width; Increase the information extraction amount of pulse height analyzer, expanded the application of pulse height analyzer.
Description of drawings
The structural drawing of the pulse amplitude analysis circuit that Fig. 1 provides for one embodiment of the invention;
The exemplary circuit structural drawing of the integration type pulse amplitude analysis circuit that Fig. 2 provides for one embodiment of the invention;
The sequential chart of the integration type pulse amplitude analysis circuit that Fig. 3 provides for one embodiment of the invention;
The exemplary circuit figure of the differential expression pulse amplitude analysis circuit that Fig. 4 provides for one embodiment of the invention;
The upper-level threshold amplitude of the differential expression pulse amplitude analysis circuit that Fig. 5 provides for one embodiment of the invention, the graph of a relation of threshold amplitude and noise threshold down;
The sequential chart of the differential expression pulse amplitude analysis circuit that Fig. 6 provides for one embodiment of the invention;
The preferred exemplary circuit structure diagram of the differential expression pulse amplitude analysis circuit that Fig. 7 provides for the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention changes discharge time through the resistance of regulating slide rheostat; Delay resets to bistable circuit; Make the width adaptive change of maintenance of output signal and input nucleus pulse signal; Realize in single track output signal, carrying the physical quantity of nuclear pulse signal width, increased the information extraction amount of pulse height analyzer.
Fig. 1 illustrates the structure of the pulse amplitude analysis circuit that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the present invention.
This pulse amplitude analysis circuit 1 is connected with threshold value generation unit 2, can be used for various pulse height analyzers, and this threshold value generation unit 2 has at least one threshold value output terminal.
The pulse amplitude analysis circuit 1 that provides as one embodiment of the invention comprises:
In embodiments of the present invention; The nuclear pulse signal is counted, is write down the peak information of nuclear pulse signal through the signal screening unit; And by control module control discharge, output adaptive has realized in single track output signal, carrying the physical quantity of nuclear pulse signal width in the single track output signal of nuclear pulse signal width; Increase the information extraction amount of pulse height analyzer, expanded the application of pulse height analyzer.
Below in conjunction with specific embodiment realization of the present invention is elaborated.
Fig. 2 illustrates the exemplary circuit structure of the integration type pulse amplitude analysis circuit that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the present invention.
As one embodiment of the invention, in this integration type pulse amplitude analysis circuit 1, charhing unit 11 comprises:
Diode D1 and capacitor C 1;
The anode of diode D1 is the input end of charhing unit 11, and the negative electrode of diode D1 is connected with an end of capacitor C 1, the other end ground connection of capacitor C 1, and the link of diode D1 and capacitor C 1 is the output terminal of charhing unit 11.
First discriminator 121; The positive input of this first discriminator 121 is the signal input part of signal screening unit 12; The reverse input end of first discriminator 121 is that the first threshold input end Inthre1 of signal screening unit 12 is connected with the amplitude threshold output terminal of threshold value generation unit 2; Be used for counting the output amplitude discriminator signal during greater than threshold signal when the amplitude of nuclear pulse signal;
Second discriminator 122; The reverse input end of this second discriminator 122 is the signal input part of signal screening unit 12; The positive input of second discriminator 13 is the reference input of signal screening unit 12, is used for when charging voltage during greater than the amplitude of nuclear pulse signal output peak value discriminator signal.
First bistable circuit 131; The input end of this first bistable circuit 131 is the first input end of control module 13; The reset terminal of first bistable circuit 131 is the reset terminal of control module 13; Be used for when receiving the amplitude discriminator signal, export first status signal and reverse first status signal;
Second bistable circuit 132; The input end of this second bistable circuit 132 is second input end of control module 13; The reset terminal of second bistable circuit 132 is the reset terminal of control module 13; Be used for when receiving the peak value discriminator signal, export second status signal and reverse second status signal;
First with the door AND1; This first with the door AND1 first input end be connected with the inverse output terminal of first bistable circuit 131; First with the door AND1 second input end be connected with the forward output terminal of second bistable circuit 132; First with the door AND1 output terminal be first output terminal of control module 13, be used for reverse first status signal and second status signal are carried out logic determines, export first discharge control signal;
Second with the door AND2; This second with the door AND2 first input end be connected with the forward output terminal of first bistable circuit 131; Second is connected with second input end of AND1 with first with second input end of door AND2; Second with the output terminal of door AND2 be second output terminal of control module 13, be used for first status signal and second status signal are carried out logic determines, export second discharge control signal and the single track output signal that is adaptive to the nuclear pulse signal width.
Reset control circuit 141; The input end of this reset control circuit 141 is the voltage input end of reset unit 14; First control end of reset control circuit 141 is first control end of reset unit 14, and second control end of reset control circuit 141 is second control end of reset unit 14, is used for the control according to first discharge control signal and second discharge control signal; Charging circuit 11 is discharged the output reseting controling signal;
The 3rd discriminator 142; The positive input of the 3rd discriminator 142 is connected with the input end of reset control circuit 141; The reverse input end of the 3rd discriminator 142 is connected with the discharge threshold output terminal of threshold value generation unit 2; The output terminal of the 3rd discriminator 142 is the output terminal of reset unit 14, is used for when reseting controling signal is lower than discharge threshold the output reset signal.
As one embodiment of the invention, reset control circuit 141 comprises:
The first analog switch S1, the second analog switch S2 and slide rheostat R1;
The end of the first analog switch S1 is the input end of reset control circuit 141; The other end ground connection of the first analog switch S1; The control end of the first analog switch S1 is first control end of reset control circuit 141, and the end of the second analog switch S2 is connected with the end of the first analog switch S1, and the other end of the second analog switch S2 is through slide rheostat R1 ground connection; The control end of the second analog switch S2 is second control end of reset control circuit 141, the sliding end ground connection of slide rheostat R1.
As one embodiment of the present invention, the first analog switch S1, the second analog switch S2 all can adopt switching tubes such as power field effect pipe, triode to realize.
In embodiments of the present invention; In a nuclear pulse signal cycle, the nuclear pulse signal carries out amplitude discriminator through first discriminator 121, when the amplitude of this nuclear pulse signal during greater than the examination threshold value of first discriminator 121; First discriminator, 121 output amplitude discriminator signals; When the amplitude of this nuclear pulse signal during less than the examination threshold value of first discriminator 121, first discriminator 121 is the output amplitude discriminator signal not, and this nuclear pulse signal is left in the basket.
The nuclear pulse signal charges through charhing unit 11 between the pulse rising stage simultaneously; Because diode D1 forward conduction; Oppositely end, the output terminal that makes charhing unit 11 still can keep the voltage of this nuclear pulse signal peak value between the pulse decrement phase of nuclear pulse signal, and second discriminator 122 with this PV and the voltage ratio of examining pulse signal; When PV during greater than the voltage of nuclear pulse signal, i.e. output peak value discriminator signal between the pulse decrement phase of nuclear pulse signal.
When first bistable circuit 131 receives the amplitude discriminator signal, export first status signal and reverse first status signal; When second bistable circuit 132 receives the peak value discriminator signal, export second status signal.First carries out logic determines with a door AND2 to first status signal, reverse first status signal and second status signal with door AND1 and second, and has the standard single track that is adaptive to the input nucleus pulse signal width through second with door AND2 output and export signal.
When the nuclear pulse signal is changed to peak value of pulse; And this peak value of pulse is greater than the examination threshold value of first discriminator 121; When promptly first status signal and second status signal were high level, second discharge control signal of output was controlled the second analog switch conducting in the reset control circuit 141, and through slide rheostat R1 charhing unit 11 was discharged; The output end voltage of charhing unit 11 is slowly reduced, and this velocity of discharge depends on the setting to slide rheostat R1 resistance;
When this pulse signal drops to the examination threshold value of first discriminator 121 when following from peak value; Be that reverse first status signal and second status signal are when being high level; Export the first analog switch conducting in first discharge control signal control reset control circuit 141; Moment discharges to charhing unit 11; When the voltage drop of charhing unit 11 output terminals is low to moderate the discharge threshold voltage of the 3rd discriminator 142 when following; The 3rd discriminator 142 resets to begin to get into next nuclear pulse signal cycle first bistable circuit 131 and second bistable circuit 132 to the reseting controling signal of first bistable circuit 131 and second bistable circuit, 132 output low levels.
As one embodiment of the invention, the discharge threshold voltage of the 3rd discriminator 142 can be set to the magnitude of voltage a little more than 0 volt.
In embodiments of the present invention, through regulating the resistance of slide rheostat R1, make at nuclear pulse signal amplitude decrement phase close with discharge time, thereby the width of realizing single track output signal is adaptive to the width of examining pulse signal.
Fig. 3 illustrates the sequential of the integration type pulse amplitude analysis circuit that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the present invention.
In embodiments of the present invention, in t0 to the t1 period, do not receive the nuclear pulse signal; Charhing unit 11 can't charge; Its output end voltage is 0 volt, because the discharge threshold voltage of the 3rd discriminator 142 is a little more than 0 volt, the output terminal of the 3rd discriminator 142 is a low level; First bistable circuit 131, second bistable circuit 132 reset, all output low level;
In t1 to the t2 period; The nuclear pulse signal is to charhing unit 11 chargings; The positive input voltage of the 3rd discriminator 142 is higher than reverse input end voltage, and the 3rd discriminator 142 output switching activities stop first bistable circuit 131, second bistable circuit 132 are resetted; Because the amplitude of this nuclear pulse signal does not reach the examination threshold value of first discriminator 121; The positive input of second discriminator 122 also is not more than the voltage of second discriminator, 122 reverse input ends for the voltage of nuclear pulse signal after to charhing unit 11 charging, so other signals do not change, and single track output signal is a low level;
In t2 to the t3 period; The amplitude of nuclear pulse signal does not reach the examination threshold value of first discriminator 121 yet; The output signal of first discriminator 121 is constant, and the reverse input end voltage of second discriminator 122 descends with the nuclear pulse amplitude, and the positive input voltage of second discriminator 122 is because diode D1 is reverse by remaining unchanged; Therefore the output of second discriminator 122 becomes high level; The forward output terminal of second bistable circuit 132 output high level, first with a door AND1 output high level, first analog switch S1 moment is to charhing unit 11 discharges; The output of the 3rd discriminator 18 becomes low level first bistable circuit 14, second bistable circuit 15 is resetted once more, and single track output signal is a low level;
In t3 to the t4 period, 13 pairs first bistable circuits of the 3rd discriminator 14, second bistable circuit 15 reset, and single track output signal is a low level;
In t4 to the t5 period, the amplitude of nuclear pulse signal does not reach the examination threshold value of first discriminator 121, and single track output signal is a low level;
In t5 to the t6 period; The amplitude of nuclear pulse signal reaches the examination threshold value of first discriminator 121; First discriminator, 121 output high level; But the positive input voltage of second discriminator 122 is not more than reverse input end voltage, so second discriminator, 122 output low levels, and single track output signal still remains low level;
In t6 to the t7 period, the amplitude of nuclear pulse signal reaches the examination threshold value of first discriminator 121, first discriminator, 121 output high level; Second discriminator 122 is exported high level after reaching nuclear pulse signal peak value, and the forward output terminal of first bistable circuit 131, second bistable circuit 132 is also exported high level, second with a door AND2 output high level; First with a door AND1 output low level; Second analog switch S2 conducting control discharge, but because the second analog switch S2 discharges through slide rheostat R1, its velocity of discharge can change through the resistance of regulating slide rheostat R1; The resistance of this slide rheostat R1 is big more; The velocity of discharge is slow more, and at this moment, the saltus step of single track output signal is to high level;
In t7 to the t8 period, the amplitude of nuclear pulse signal is lower than the examination threshold value of first discriminator 121, first discriminator, 121 output low levels; But this moment is because the velocity of discharge causes the 3rd discriminator 142 not reset to first bistable circuit 131 immediately; Therefore first bistable circuit 131 still keeps the output high level, and the positive input voltage of second discriminator 122 is still greater than reverse input end voltage output high level, and single track output signal is a high level; Be brought down below the amplitude of examining pulse signal this moment when the output end voltage of charhing unit 11; But when being higher than the discharge threshold voltage of the 3rd discriminator 142, second discriminator 122 becomes low level, but owing to there is not reset signal; Second bistable circuit 15 is still exported high level signal; When the output end voltage of charhing unit 11 was brought down below discharge threshold voltage, the reset signal of the 3rd discriminator 142 output low levels resetted first bistable circuit 131 and second bistable circuit 132; Output low level, single track output signal becomes low level.
As one embodiment of the invention, can slide rheostat R1 be transferred to suitable resistance, make at nuclear pulse signal amplitude decrement phase close with discharge time, thereby the width of realizing single track output signal is adaptive to the width of examining pulse signal.
In embodiments of the present invention; Resistance through regulating slide rheostat changes discharge time, and then postpones the resetting of bistable circuit, and makes the output signal keep the width adaptive change with the input nucleus pulse signal; Thereby realized in single track output signal, carrying the physical quantity of nuclear pulse signal width; Make pulse amplitude analysis on the function of counting, can also extract the physical quantity of nuclear pulse signal width, increased the information extraction amount, improved examination efficient; Expanded the application of pulse height analyzer, and this circuit structure is simple, cost is low.
Fig. 4 illustrates the exemplary circuit structure of the differential expression pulse amplitude analysis circuit that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the present invention.
As one embodiment of the invention, charhing unit 11 comprises:
Diode D3 and capacitor C 4;
The anode of diode D3 is the input end of charhing unit 11, and the negative electrode of diode D3 is connected with an end of capacitor C 4, the other end ground connection of capacitor C 4, and the link of diode D3 and capacitor C 4 is the output terminal of charhing unit 11.
Upper-level threshold discriminator 123; The positive input of this upper-level threshold discriminator 123 is the signal input part of signal screening unit 12; The reverse input end of upper-level threshold discriminator 123 is that the first threshold input end Inthrel of signal screening unit 12 is connected with the upper-level threshold output terminal of threshold value generation unit 2, is used for the amplitude and the upper-level threshold amplitude of nuclear pulse signal are compared;
Following threshold discriminator 124; The positive input of this time threshold discriminator 124 is the signal input part of signal screening unit 12; The reverse input end of following threshold discriminator 124 is that the second threshold value input end Inthre2 of signal screening unit 12 is connected with the following threshold output terminal of threshold value generation unit 2; The amplitude that is used for examining pulse signal compares with following threshold amplitude; When the amplitude of nuclear pulse signal less than the upper-level threshold amplitude of upper-level threshold discriminator 122, and count the output amplitude discriminator signal during greater than the following threshold amplitude of threshold discriminator 132 down;
Cross top discriminator 125; This reverse input end of crossing top discriminator 125 is the signal input part of signal screening unit 12; The positive input of crossing top discriminator 125 is the reference input of signal screening unit 12, is used for when charging voltage during greater than the amplitude of nuclear pulse signal output peak value discriminator signal;
XOR gate XOR, the first input end of this XOR gate XOR is connected with the output terminal of upper-level threshold discriminator 123, and second input end of XOR gate XOR is connected with the output terminal of following threshold discriminator 124;
Not gate NOT, the input end of this not gate NOT is connected with the output terminal of XOR gate XOR;
The 3rd with the door AND3; The 3rd is connected with the output terminal of first input end Sheffer stroke gate NOT of door AND3; The 3rd with second input end of door AND3 with cross top discriminator 125 output terminal is connected, the 3rd and the output terminal of an AND3 be first output terminal of signal screening unit 12;
The 4th with the door AND4; The 4th is connected with the input end of first input end Sheffer stroke gate NOT of door AND4; The 4th is connected with second input end of door AND3 with the 3rd with second input end of door AND4, the 4th and the output terminal of AND4 be second output terminal of signal screening unit 12.
As one embodiment of the present invention, signal screening unit 12 can also comprise:
Noise discriminator 126; The positive input of this noise discriminator 126 is the signal input part of signal screening unit 12; The reverse input end of noise discriminator 126 is that the 3rd threshold value input end Inthre3 of signal screening unit 12 is connected with the noise threshold output terminal of threshold value generation unit 2, and the output terminal of noise discriminator 126 is connected with the reset terminal of control module 13, is used for after the amplitude of examining pulse signal is greater than the noise threshold amplitude; The output reset signal resets control module 13.
In embodiments of the present invention; Signal screening unit 12 can also comprise: capacitor C 2, capacitor C 3, resistance R 2, resistance R 3 and diode D2, and an end of capacitor C 2 is connected with the output terminal of noise discriminator 126, and the other end of capacitor C 2 is through resistance R 2 ground connection; The other end of capacitor C 2 is connected with the anode of diode D2 simultaneously; The negative electrode of diode is connected with the reset terminal of control module 13, is used for the output of noise isolation discriminator 126, prevents to disturb; One end of capacitor C 3 is connected with the output terminal of crossing top discriminator 125, and the other end of capacitor C 3 is through resistance R 3 ground connection, and the other end of capacitor C 3 is connected with second input end of door AND4 with the 4th simultaneously, is used to control the transmission of upper-level threshold discriminator 123 output signals.
The 3rd bistable circuit 133; The input end of the 3rd bistable circuit 133 is the first input end of control module 13; The reset terminal of the 3rd bistable circuit 133 is the reset terminal of control module 13; The forward output terminal of the 3rd bistable circuit 133 is first output terminal of control module 13, is used to export first discharge control signal;
The 4th bistable circuit 134; The input end of the 4th bistable circuit 134 is second input end of control module 13; The reset terminal of the 4th bistable circuit 134 is the reset terminal of control module 13; The forward output terminal of the 4th bistable circuit 134 is second output terminal of control module 13, is used to export first discharge control signal;
The 5th bistable circuit 135; The input end of the 5th bistable circuit 135 is second input end of control module 13; The reset terminal of the 5th bistable circuit 135 is the reset terminal of control module 13; The forward output terminal of the 5th bistable circuit 135 is the 3rd output terminal of control module 13, is used for the single track output signal of output adaptive in the nuclear pulse signal width.
The input end of reset control circuit 141 is the voltage input end of reset unit 14; First control end of reset control circuit 141 is first control end of reset unit 14; Second control end of reset control circuit 141 is second control end of reset unit 14; The reset level test side of reset control circuit 141 is connected with the reverse input end of the 3rd discriminator 142; The positive input of the 3rd discriminator 142 is the voltage input end of reset unit 14 simultaneously, and the output terminal of the 3rd discriminator 142 is the output terminal of reset unit 14.
As one embodiment of the invention, reset control circuit 141 comprises:
The 3rd analog switch S3, the 4th analog switch S4, resistance R 4, slide rheostat R5, slide rheostat R6;
The end of the 3rd analog switch S3 is that the input end of reset control circuit 141 is connected with the end of slide rheostat R5; The other end ground connection of the 3rd analog switch S3; The control end of the 3rd analog switch S3 is first control end of reset control circuit 141, and the other end of slide rheostat R5 is connected with sliding end, and the end of the 4th analog switch S4 is connected with the other end of slide rheostat R5; The other end ground connection of the 4th analog switch S4; The control end of the 4th analog switch S4 is second control end of reset control circuit 141, and an end of resistance R 4 is the input end of reset control circuit 141 simultaneously, and the other end of resistance R 4 is connected with the end of slide rheostat R6; The other end ground connection of slide rheostat R6, the sliding end of slide rheostat R6 are the reset level test side of reset control circuit 141.
As one embodiment of the present invention, reset unit 14 can also comprise: capacitor C 5, resistance R 7 and diode D4;
One end of capacitor C 5 is connected with the output terminal of the 3rd discriminator 142; The other end of capacitor C 5 is through resistance R 7 ground connection; The other end of capacitor C 5 is connected with the anode of diode D4 simultaneously; The negative electrode of diode D4 is the output terminal of reset unit 14, is used to isolate the output of the 3rd discriminator 142, prevents noise isolation discriminator 126 and the 3rd discriminator 142 two-way output mutual interference mutually.
As one embodiment of the invention, this pulse amplitude analysis circuit 1 can also comprise:
In embodiments of the present invention; Amplitude through 124 pairs of nuclear of upper-level threshold discriminator 123 and following threshold discriminator pulse signal compares, and judges amplitude through XOR gate XOR, and the nuclear pulse signal between upper-level threshold amplitude and following threshold amplitude is counted; Amplitude is not ignored at the nuclear pulse signal of this scope; Fig. 5 shows the upper-level threshold amplitude, descends the relation of threshold amplitude and noise threshold: upper-level threshold amplitude＞following threshold amplitude＞noise threshold is counted when the amplitude of nuclear pulse signal is in dash area, and the peak value discriminator signal of amplitude discriminator signal and designature and top discriminator 125 outputs is excessively carried out exporting to control module 13 after the logical operation; After this nuclear pulse signal surpasses noise threshold; Noise discriminator 126 output reset signals reset to control module 13, and control module 13 is started working; The noise threshold of noise discriminator 126 can be made as 10mv, and control module 13 directly discharges to capacitor C 4 to capacitor C 4 discharges or through resistance according to the judgement of the digital signal after the logical operation.When the amplitude of input nucleus pulse signal is not to be between the upper and lower examination threshold value; Then AND3 input " 1 "; The 3rd bistable circuit 133 outputs first discharge control signal is controlled the 3rd analog switch S3 conducting directly to capacitor C 4 discharges; This moment, the 5th bistable circuit 135 was not exported single track output signal; When nuclear after pulse signal crosses the top, cross top discriminator 125 and be output as " 1 ", and be between the upper and lower examination threshold value when the amplitude of input nucleus pulse signal; Then AND4 input " 1 "; The 4th bistable circuit 134 outputs second discharge control signal is controlled the 4th analog switch S4 conducting, and to capacitor C 4 discharges, the resistance of regulating slide rheostat can change discharge time through resistance R 4, slide rheostat R5 and slide rheostat R6; And then delay resetting to bistable circuit; Make the output signal keep the width adaptive change with the input nucleus pulse signal, this moment the 5th bistable circuit 135 output width with the proportional single track output of nuclear pulse signal width signal, when the voltage drop of charhing unit 11 output terminals is low to moderate the discharge threshold voltage of the 3rd discriminator 142 when following (discharge threshold of the 3rd discriminator 142 can be made as 10mv); The 3rd discriminator 142 is to the reseting controling signal of the 3rd bistable circuit 133, the 4th bistable circuit 134 and the 5th bistable circuit 135 output low levels, and control resets to begin to get into next nuclear pulse signal cycle.
In embodiments of the present invention; Crossing top discriminator 125 resets through the original state of signal leading edge to control module 13; The 3rd discriminator 142 resets to control module 13 through signal trailing edge and clears data so that carry out the judgement of next nuclear pulse signal; Wherein diode D2 and diode D4 are for fear of crossing top discriminator 125 and the 142 output butt joints of the 3rd discriminator, avoiding producing the reset signal conflict.
Timing reference Fig. 6 of this differential expression pulse amplitude analysis circuit 1, wherein S
a, S
b, S
c, S
dBe the signal at node a, b, c, d place, U
cBe the current potential of charhing unit 11 output terminals, shown the charge status of capacitor C 4, S
ResetBe reset signal, S
OutFor being adaptive to the single track output signal of nuclear pulse signal width, S
Con1Be first control signal, S
Con2Be second control signal, as can be seen from Figure 6, when the amplitude of examining pulse signal was between upper and lower threshold value, output was exported signal S with the single track that the nuclear pulse signal width adapts
Out, when the amplitude of nuclear pulse signal during greater than upper threshold value or less than lower threshold value, control module 13 is not exported single track output signal.
As one embodiment of the present invention; This pulse amplitude analysis circuit 1 can also comprise a single track double throw switch K; The end of this single track double throw switch K is connected with the first input end of door AND4 with the 4th, and first closing end of single track double throw switch K is connected with the output terminal of XOR gate XOR, and second closing end of single track double throw switch K is connected with the output terminal of following threshold discriminator 124; When single track double throw switch K when first closing end is closed; This pulse amplitude analysis circuit 1 is the differential expression structure, when single track double throw switch K when second closing end is closed, this pulse amplitude analysis circuit 1 is the integration type structure.
Fig. 7 illustrates the preferred exemplary circuit structure of the differential expression pulse amplitude analysis circuit that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the present invention.
As one embodiment of the invention, control module 13 can also comprise:
The 6th bistable circuit 136; The input end of the 6th bistable circuit 136 is the first input end of control module 13; The reset terminal of the 6th bistable circuit 136 is the reset terminal of control module 13; The forward output terminal of the 6th bistable circuit 136 is first output terminal of control module 13, is used to export first discharge control signal;
The 7th bistable circuit 137; The input end of the 7th bistable circuit 137 is second input end of control module 13; The reset terminal of the 7th bistable circuit 137 is the reset terminal of control module 13; The forward output terminal of the 7th bistable circuit 137 is second output terminal of control module 13, is used to export first discharge control signal and the single track output signal that is adaptive to the nuclear pulse signal width.
As one embodiment of the invention, reset control circuit 141 can also comprise:
First K switch 1, second switch K2, slide rheostat R8, resistance R 9, constant current source 1411 and constant pressure source 1412;
One end of first K switch 1 is that the input end of reset unit 14 is connected with the end of second switch K2; The other end ground connection of first K switch 1; The control end of first K switch 1 is first control end of reset control circuit 141; The other end of second switch K2 is through constant current source 1411 ground connection, and the control end of second switch K2 is second control end of reset control circuit 141, the end ground connection of slide rheostat R8; The other end of slide rheostat R8 is connected with constant pressure source 1412 through resistance R 9, and the sliding end of slide rheostat R8 is the reset level test side of reset control circuit 141.
In embodiments of the present invention, the width of pulse is meant pulse height greater than that part of width of noise threshold, surpasses noise threshold from pulse height and begins to calculate.
As one embodiment of the invention; At first with the amplitude of pulse with the electric capacity C4 preservation (being the effect of precision rectifer and energy storage) of sampling, then pulse behind the peaking again through judging that " whether pulse height is between the upper and lower examination threshold value " decide the pulse amplitude values of preserving whether useful.If judge " pulse height is to be between the upper and lower examination threshold value ", then let capacitor C 4 discharge through second switch K2, its discharge time is by constant current source 1411 controls; If judge " pulse height is not to be between the upper and lower examination threshold value ", then let capacitor C 4 directly through 1 rapid discharge of first K switch, the pulse height information of abandoning preserving.Though because the amplitude of signal is not of uniform size, their shape is consistent, promptly the size of amplitude and width have goodish correlativity, so can come the width of signal calculated through amplitude.
In embodiments of the present invention; This pulse amplitude analysis circuit 1 comes preservation amplitude size through capacitor C 4; Let capacitor C 4 convert amplitude information into width information (ratio of conversion is determined by constant current source) again, thereby obtain the variable output signal of pulse width through the linearity discharge.
The sliding end of resistance R 9 and slide rheostat R8 is that the 3rd discriminator 142 provides the termination that can regulate of a capacitor discharge to screen voltage.When capacitor C 4 discharges into voltage on the capacitor C 4 less than noise threshold through constant current source 1411; Can first K switch 1 or second switch K2 be opened through the output of the 3rd discriminator 142; Stop discharge; And output the 6th bistable circuit 136, the 7th bistable circuit 137 are resetted, prepare work next time.
As one embodiment of the invention, the effect of noise discriminator 126 is when signal amplitude during greater than noise threshold, exports one " 0 "--the signal of＞" 1 ", expression " signal has been arranged ".Form a very short spike pulse behind the differential of this output through capacitor C 2 and resistance R 2, the 6th bistable circuit 136, the 7th bistable circuit 137 are resetted, prepare to start working.Capacitor C 5 also is the effect that forms the short pulse that resets with resistance R 7.Owing to there are two reset signals to be connected together, may phase mutual interference (like an output high level, the situation of an output low level), so use diode D2 and diode D4 to isolate respectively.
Because through the existence of precision rectifer C4, before signal was crossed the top, the positive input voltage of crossing top discriminator 125 was crossed top discriminator 125 and is output as " 0 " less than reverse input end; After signal is crossed the top, be the PV of signal on the capacitor C 4, the positive input voltage of crossing top discriminator 125 is crossed top discriminator 125 and is output as " 1 " greater than reverse input end.To open with door AND3 with door AND4 behind the differential of its output through capacitor C 3 and resistance R 3, and let the distance signal pass through.If the amplitude of input nucleus pulse signal is between the upper and lower examination threshold value, then AND4 input " 1 ", 137 outputs " 1 " of the 7th bistable circuit; Make second switch K2 closed; Capacitor C 4 linear discharges, AND3 input " 0 " simultaneously, 136 outputs " 0 " of the 6th bistable circuit; First K switch 1 is opened, capacitor C 4 can not discharged through first K switch 1.If the amplitude of input nucleus pulse signal is not to be between the upper and lower examination threshold value, then AND3 input " 1 ", 136 outputs " 1 " of the 6th bistable circuit make first K switch, 1 closure, and capacitor C 4 is through 1 rapid discharge of first K switch.In the time of 137 outputs " 1 " of the 7th bistable circuit, promptly export signal.By the time capacitor C 4 arrives noise voltage threshold value (by resistance R 9 and slide rheostat R8 decision) when following through discharge; The 142 output counter-rotatings (" 0 "--＞" 1 ") of the 3rd discriminator; Its output resets the 6th bistable circuit 136, the 7th bistable circuit 137 through capacitor C 5 and diode D4; First K switch 1 is all opened with second switch K2, and the output of the 7th bistable circuit 137 also is back to " 0 ", the width of the corresponding input pulse of width of output pulse.
In embodiments of the present invention; Resistance through regulating slide rheostat changes discharge time, and then postpones the resetting of bistable circuit, and makes the output signal keep the width adaptive change with the input nucleus pulse signal; Thereby realized in single track output signal, carrying the physical quantity of nuclear pulse signal width; Make pulse amplitude analysis on the function of counting, can also extract the physical quantity of nuclear pulse signal width, increased the information extraction amount, improved examination efficient; Expanded the application of pulse height analyzer, and this circuit structure is simple, cost is low.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a pulse amplitude analysis circuit is connected with the threshold value generation unit, and said threshold value generation unit has at least one threshold value output terminal, it is characterized in that, said circuit comprises:
Charhing unit, the input end of said charhing unit receive the nuclear pulse signal, are used to utilize said nuclear pulse signal to charge, to write down the peak information of said nuclear pulse signal;
The signal screening unit; Said signal screening unit has at least one threshold value input end; The reference input of said signal screening unit is connected with the output terminal of said charhing unit, and the signal input part of said signal screening unit receives nuclear pulse signal, the threshold value input end of said signal screening unit and the corresponding connection of the threshold value output terminal of threshold value generation unit; Be used to extract the peak information of said nuclear pulse signal, output amplitude discriminator signal and peak value discriminator signal;
Control module; The first input end of said control module is connected with first output terminal of said signal screening unit; Second input end of said control module is connected with second output terminal of said signal screening unit; Said control module has a plurality of output terminals, is used for according to said amplitude discriminator signal and said peak value discriminator signal, exports first discharge control signal and second discharge control signal and the single track output signal that is adaptive to said nuclear pulse signal width respectively;
Reset unit; The voltage input end of said reset unit is connected with the output terminal of charhing unit; First control end of said reset unit is connected with first output terminal of said control module; Second control end of said reset unit is connected with second output terminal of said control module, and the output terminal of said reset unit is connected with the reset terminal of said control module, is used for according to said first discharge control signal and said second discharge control signal control discharge; The output reset signal resets said control module.
2. circuit as claimed in claim 1 is characterized in that, said signal screening unit comprises:
First discriminator; The positive input of said first discriminator is the signal input part of said signal screening unit; The reverse input end of said first discriminator is that the first threshold input end of said signal screening unit is connected with the amplitude threshold output terminal of said threshold value generation unit; Count the output amplitude discriminator signal when being used for amplitude when said nuclear pulse signal greater than threshold signal;
Second discriminator; The reverse input end of said second discriminator is the signal input part of said signal screening unit; The positive input of said second discriminator is the reference input of said signal screening unit; Be used for when charging voltage during output peak value discriminator signal greater than the amplitude of nuclear pulse signal.
3. circuit as claimed in claim 1 is characterized in that, said signal screening unit comprises:
The upper-level threshold discriminator; The positive input of said upper-level threshold discriminator is the signal input part of said signal screening unit; The reverse input end of said upper-level threshold discriminator is that the first threshold input end of said signal screening unit is connected with the upper-level threshold output terminal of said threshold value generation unit, is used for the amplitude and the upper-level threshold amplitude of said nuclear pulse signal are compared;
Following threshold discriminator; The said positive input of threshold discriminator down is the signal input part of said signal screening unit; The second threshold value input end that the said reverse input end of threshold discriminator down is said signal screening unit is connected with the following threshold output terminal of said threshold value generation unit; Be used for the amplitude of said nuclear pulse signal is compared with following threshold amplitude; When the amplitude of said nuclear pulse signal upper-level threshold amplitude, and count the output amplitude discriminator signal during greater than the following threshold amplitude of said threshold discriminator down less than said upper-level threshold discriminator;
Cross the top discriminator; The said reverse input end of crossing the top discriminator is the signal input part of said signal screening unit; The said positive input of crossing the top discriminator is the reference input of said signal screening unit; Be used for when charging voltage during output peak value discriminator signal greater than the amplitude of said nuclear pulse signal;
XOR gate, the first input end of said XOR gate is connected with the output terminal of said upper-level threshold discriminator, and second input end of said XOR gate is connected with the said output terminal of threshold discriminator down;
Not gate, the input end of said not gate is connected with the output terminal of said XOR gate;
The 3rd with the door; The said the 3rd with the door first input end be connected with the output terminal of said not gate; The said the 3rd gets output terminal and is connected with the said top discriminator of crossing with second input end of door, the said the 3rd and output terminal be first output terminal of said signal screening unit;
The 4th with the door; The said the 4th with the door first input end be connected with the input end of said not gate; The said the 4th with the door second input end with the said the 3rd with the door second input end be connected, the said the 4th and output terminal be second output terminal of said signal screening unit.
4. circuit as claimed in claim 3 is characterized in that, said signal screening unit also comprises:
The noise discriminator; The positive input of said noise discriminator is the signal input part of said signal screening unit; The reverse input end of said noise discriminator is that the 3rd threshold value input end of said signal screening unit is connected with the noise threshold output terminal of said threshold value generation unit; The output terminal of said noise discriminator is connected with the reset terminal of said control module; Be used for noise signal amplitude when said nuclear pulse signal greater than the noise threshold amplitude after, the output reset signal resets control module.
5. circuit as claimed in claim 1 is characterized in that, said control module comprises:
First bistable circuit; The input end of said first bistable circuit is the first input end of said control module; The reset terminal of said first bistable circuit is the reset terminal of said control module; Be used for when receiving said amplitude discriminator signal, exporting first status signal and reverse first status signal;
Second bistable circuit; The input end of said second bistable circuit is second input end of said control module; The reset terminal of said second bistable circuit is the reset terminal of said control module; Be used for when receiving said peak value discriminator signal, exporting second status signal and reverse second status signal;
First with the door; Said first with the door first input end be connected with the inverse output terminal of said first bistable circuit; Said first with the door second input end be connected with the forward output terminal of said second bistable circuit; Said first with the door output terminal be first output terminal of said control module, be used for said reverse first status signal and said second status signal are carried out logic determines, export first discharge control signal;
Second with the door; Said second with the door first input end be connected with the forward output terminal of said first bistable circuit; Said second with the door second input end with said first with second input end be connected; Said second with the output terminal of door be second output terminal of said control module, be used for said first status signal and said second status signal are carried out logic determines, export second discharge control signal and the single track output signal that is adaptive to the nuclear pulse signal width.
6. circuit as claimed in claim 1 is characterized in that, said control module comprises:
The 3rd bistable circuit; The input end of said the 3rd bistable circuit is the first input end of said control module; The reset terminal of said the 3rd bistable circuit is the reset terminal of said control module, and the forward output terminal of said the 3rd bistable circuit is first output terminal of said control module;
The 4th bistable circuit; The input end of said the 4th bistable circuit is second input end of said control module; The reset terminal of said the 4th bistable circuit is the reset terminal of said control module, and the forward output terminal of said the 4th bistable circuit is second output terminal of said control module;
The 5th bistable circuit; The input end of said the 5th bistable circuit is second input end of said control module; The reset terminal of said the 5th bistable circuit is the reset terminal of said control module, and the forward output terminal of said the 5th bistable circuit is the 3rd output terminal of said control module.
7. circuit as claimed in claim 1 is characterized in that, said control module comprises:
The 6th bistable circuit; The input end of said the 6th bistable circuit is the first input end of said control module; The reset terminal of said the 6th bistable circuit is the reset terminal of said control module, and the forward output terminal of said the 6th bistable circuit is first output terminal of said control module;
The 7th bistable circuit; The input end of said the 7th bistable circuit is second input end of said control module; The reset terminal of said the 7th bistable circuit is the reset terminal of said control module, and the forward output terminal of said the 7th bistable circuit is second output terminal of said control module.
8. circuit as claimed in claim 1 is characterized in that, said reset unit comprises:
Reset control circuit; The input end of said reset control circuit is the voltage input end of said reset unit; First control end of said reset control circuit is first control end of said reset unit, and second control end of said reset control circuit is second control end of said reset unit, is used for the control according to said first discharge control signal and said second discharge control signal; Charging circuit is discharged the output reseting controling signal;
The 3rd discriminator; The positive input of said the 3rd discriminator is connected with the input end of said reset control circuit; The reverse input end of said the 3rd discriminator is connected with the discharge threshold output terminal of said threshold value generation unit; The output terminal of said the 3rd discriminator is the output terminal of said reset unit, is used for when said reseting controling signal is lower than discharge threshold the output reset signal.
9. circuit as claimed in claim 8 is characterized in that, said reset control circuit comprises:
First analog switch, second analog switch and slide rheostat R1;
One end of said first analog switch is the input end of said reset control circuit; The other end ground connection of said first analog switch; The control end of said first analog switch is first control end of said reset control circuit; One end of said second analog switch is connected with an end of said first analog switch; The other end of said second analog switch is through said slide rheostat R1 ground connection, and the control end of said second analog switch is second control end of said reset control circuit, the sliding end ground connection of said slide rheostat R1.
10. circuit as claimed in claim 1 is characterized in that, said reset unit comprises:
Reset control circuit and the 3rd discriminator;
The input end of said reset control circuit is the voltage input end of said reset unit; First control end of said reset control circuit is first control end of said reset unit; Second control end of said reset control circuit is second control end of said reset unit; The reset level test side of said reset control circuit is connected with the reverse input end of said the 3rd discriminator; The positive input of said the 3rd discriminator is the voltage input end of said reset unit simultaneously, and the output terminal of said the 3rd discriminator is the output terminal of said reset unit.
11. circuit as claimed in claim 10 is characterized in that, said reset control circuit comprises:
The 3rd analog switch, the 4th analog switch, resistance R 4, slide rheostat R5, slide rheostat R6;
One end of said the 3rd analog switch is that the input end of said reset control circuit is connected with the end of said slide rheostat R5; The other end ground connection of said the 3rd analog switch; The control end of said the 3rd analog switch is first control end of said reset control circuit; The other end of said slide rheostat R5 is connected with the sliding end of said slide rheostat R5; One end of said the 4th analog switch is connected with the other end of said slide rheostat R5, the other end ground connection of said the 4th analog switch, and the control end of said the 4th analog switch is second control end of said reset control circuit; One end of said resistance R 4 is the input end of said reset control circuit simultaneously; The other end of said resistance R 4 is connected with the end of said slide rheostat R6, the other end ground connection of said slide rheostat R6, and the sliding end of said slide rheostat R6 is the reset level test side of said reset control circuit.
12. circuit as claimed in claim 10 is characterized in that, said reset control circuit comprises:
First switch, second switch, slide rheostat R8, resistance R 9, constant current source and constant pressure source;
One end of said first switch is that the input end of said reset unit is connected with an end of said second switch; The other end ground connection of said first switch; The control end of said first switch is first control end of said reset control circuit; The other end of said second switch is through said constant current source ground connection, and the control end of said second switch is second control end of said reset control circuit, the end ground connection of said slide rheostat R8; The other end of said slide rheostat R8 is connected with said constant pressure source through said resistance R 9, and the sliding end of said slide rheostat R8 is the reset level test side of said reset control circuit.
13. a pulse height analyzer is characterized in that, the pulse amplitude analysis circuit of said analyzer is each described circuit of claim 1 to 12.
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| CN201210008706.3A CN102540240B (en) | 2012-01-12 | 2012-01-12 | Pulse amplitude analyzing circuit and pulse amplitude analyzer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389656A (en) * | 2013-07-29 | 2013-11-13 | 浙江中控技术股份有限公司 | Method and system for collecting switching signal |
| CN104155678A (en) * | 2014-07-28 | 2014-11-19 | 南华大学 | Single channel pulse height analyzer realized by applying peak position detecting method |
| CN106096714A (en) * | 2016-06-15 | 2016-11-09 | 湖南工业大学 | Stacking counting sensing device |
| CZ307559B6 (en) * | 2017-02-10 | 2018-12-05 | Univerzita Palackého v Olomouci | A method of finding a useful signal in the noise |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3798455A (en) * | 1972-01-21 | 1974-03-19 | Commissariat Energie Atomique | Method of remote analysis of the composition of a medium and a device for carrying out said method |
| US4658216A (en) * | 1983-07-14 | 1987-04-14 | The United States Of America As Represented By The Department Of Energy | High resolution, high rate X-ray spectrometer |
| CN1064549A (en) * | 1990-10-30 | 1992-09-16 | 株式会社岛津制作所 | X-ray analysis equipment |
| US20020146087A1 (en) * | 2001-03-28 | 2002-10-10 | Kabushiki Kaisha Toshiba | Radiation measurement device |
| CN1511266A (en) * | 2001-05-28 | 2004-07-07 | 浜松光子学株式会社 | Energy measuring method and device |
| CN1922507A (en) * | 2004-02-24 | 2007-02-28 | 原子能委员会 | Electronic spectrometry diagnostic circuit and associated counting chain |
| CN101710183A (en) * | 2009-12-31 | 2010-05-19 | 中国原子能科学研究院 | Digital coincidence multichannel system for nuclear spectroscopy and nuclear electronics |
| CN201569744U (en) * | 2009-09-02 | 2010-09-01 | 成都理工大学 | Multi-channel analyzer (MCA) with pulse width discrimination function |
| CN102004260A (en) * | 2009-09-02 | 2011-04-06 | 成都理工大学 | Method for discriminating pulse width |
-
2012
- 2012-01-12 CN CN201210008706.3A patent/CN102540240B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3798455A (en) * | 1972-01-21 | 1974-03-19 | Commissariat Energie Atomique | Method of remote analysis of the composition of a medium and a device for carrying out said method |
| US4658216A (en) * | 1983-07-14 | 1987-04-14 | The United States Of America As Represented By The Department Of Energy | High resolution, high rate X-ray spectrometer |
| CN1064549A (en) * | 1990-10-30 | 1992-09-16 | 株式会社岛津制作所 | X-ray analysis equipment |
| US20020146087A1 (en) * | 2001-03-28 | 2002-10-10 | Kabushiki Kaisha Toshiba | Radiation measurement device |
| CN1511266A (en) * | 2001-05-28 | 2004-07-07 | 浜松光子学株式会社 | Energy measuring method and device |
| CN1922507A (en) * | 2004-02-24 | 2007-02-28 | 原子能委员会 | Electronic spectrometry diagnostic circuit and associated counting chain |
| CN201569744U (en) * | 2009-09-02 | 2010-09-01 | 成都理工大学 | Multi-channel analyzer (MCA) with pulse width discrimination function |
| CN102004260A (en) * | 2009-09-02 | 2011-04-06 | 成都理工大学 | Method for discriminating pulse width |
| CN101710183A (en) * | 2009-12-31 | 2010-05-19 | 中国原子能科学研究院 | Digital coincidence multichannel system for nuclear spectroscopy and nuclear electronics |
Non-Patent Citations (4)
| Title |
|---|
| 季建峰 等: "基于CPLD的多路脉冲形状甄别电路", 《核电子学与探测技术》 * |
| 纪圣谋 等: "核脉冲波形甄别", 《电子测量技术》 * |
| 闫学昆 等: "基于单片机的自动化单道脉冲幅度分析系统", 《核电子学与探测技术》 * |
| 陈羽 等: "高计数率单道脉冲幅度分析器", 《核电子学与探测技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389656A (en) * | 2013-07-29 | 2013-11-13 | 浙江中控技术股份有限公司 | Method and system for collecting switching signal |
| CN104155678A (en) * | 2014-07-28 | 2014-11-19 | 南华大学 | Single channel pulse height analyzer realized by applying peak position detecting method |
| CN106096714A (en) * | 2016-06-15 | 2016-11-09 | 湖南工业大学 | Stacking counting sensing device |
| CN106096714B (en) * | 2016-06-15 | 2018-12-28 | 湖南工业大学 | Stacking counts sensing device |
| CZ307559B6 (en) * | 2017-02-10 | 2018-12-05 | Univerzita Palackého v Olomouci | A method of finding a useful signal in the noise |
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|---|---|
| CN102540240B (en) | 2014-05-07 |
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