CN111669182B - Signal sampling device, system and method - Google Patents
Signal sampling device, system and method Download PDFInfo
- Publication number
- CN111669182B CN111669182B CN202010590348.6A CN202010590348A CN111669182B CN 111669182 B CN111669182 B CN 111669182B CN 202010590348 A CN202010590348 A CN 202010590348A CN 111669182 B CN111669182 B CN 111669182B
- Authority
- CN
- China
- Prior art keywords
- signal
- unit
- reference signal
- sampling
- timing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000001960 triggered effect Effects 0.000 claims abstract description 16
- 230000007704 transition Effects 0.000 claims description 9
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 101001038535 Pelodiscus sinensis Lysozyme C Proteins 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
The application discloses a signal sampling device, a system and a method, wherein the device comprises the following components: a comparison unit configured to compare a received reference signal with an analog signal to be sampled in amplitude and output a corresponding level signal according to a comparison result, wherein the reference signal is an aperiodic signal; a timing unit configured to start timing when triggered by the reference signal and output a recorded time when triggered by the level signal received from the comparing unit; an obtaining unit configured to obtain a sampling point of the analog signal according to an amplitude characteristic of the reference signal and the time output by the timing unit. By utilizing the technical scheme provided by the application, the system cost and the power consumption can be reduced.
Description
Technical Field
The present application relates to the field of signal processing technologies, and in particular, to a signal sampling method, system, and method.
Background
In the conventional art, in order to realize digital sampling of a pulse signal, an Analog-to-Digital Converter (ADC) is generally used to scale the pulse signal in an Analog form into a digital code value. However, the digital sampling of the pulse signal is realized by using the ADC, so that the engineering implementation is difficult and the cost is extremely high.
In the field of radiation detection and imaging, in order to reduce the sampling cost, a Multi-voltage threshold (Multi-Voltage Threshold, MVT) sampling circuit is currently generally used to sample the pulse signal, as shown in fig. 1. For each detection channel, the sampling circuit generally compares the magnitudes between the voltages of the pulse signals and a plurality of voltage thresholds set in advance using a plurality of voltage comparators, and records the times at which the voltages of the pulse signals reach the voltage thresholds using a plurality of TDCs, thereby acquiring sampling points made up of time-voltage threshold pairs.
In the process of implementing the present application, the inventor finds that at least the following problems exist in the prior art:
when sampling an analog signal such as a pulse signal, in order to ensure the recovery precision of a subsequent pulse signal, a plurality of voltage comparators and a plurality of time-to-digital converters are required to obtain enough sampling points, which makes the system have higher cost and higher power consumption.
Disclosure of Invention
The embodiment of the application aims to provide a signal sampling device, a system and a method, so as to reduce the cost and the power consumption of the system.
In order to solve the above technical problems, an embodiment of the present application provides a signal sampling device, which may include:
a comparison unit configured to compare a received reference signal with an analog signal to be sampled in amplitude and output a corresponding level signal according to a comparison result, wherein the reference signal is an aperiodic signal;
a timing unit configured to start timing when triggered by the reference signal and output a recorded time when triggered by the level signal received from the comparing unit;
an obtaining unit configured to obtain a sampling point of the analog signal according to an amplitude characteristic of the reference signal and the time output by the timing unit.
Optionally, the comparing unit comprises a voltage comparator or a current comparator, and the timing unit comprises a time-to-digital converter or a time-to-voltage converter.
Optionally, the obtaining unit is specifically configured to:
for the case that the timing unit keeps timing when the level signal received from the comparing unit generates an edge jump, determining the time output by the timing unit as the time corresponding to the sampling point, and calculating the amplitude corresponding to the sampling point by using the time and the amplitude characteristic of the reference signal; or alternatively
For the case that the timing unit stops timing and resumes timing after reset when the level signal received from the comparing unit generates an edge transition, calculating a time corresponding to each sampling point according to the following formula, and calculating an amplitude corresponding to each sampling point using the time and the amplitude characteristic of the reference signal:
t i ＝t i-1 +Δt i
y i ＝f(t i )
wherein t is i And y i Respectively represent the ithThe time and amplitude corresponding to the sampling point; Δt (delta t) i Representing the i-th time recorded by the timing unit; f (t) i ) Representing an amplitude characteristic of the reference signal; i is a positive integer, and when i=1, t 0 ＝0。
Optionally, the apparatus further comprises:
a signal generation unit configured to generate the reference signal;
and a control unit configured to control the timing unit to start timing when the signal generating unit generates the reference signal.
Optionally, the apparatus further comprises:
and a reconstruction unit configured to perform reconstruction processing on the sampling points obtained by the obtaining unit to obtain a restored waveform of the analog signal.
Optionally, the reconstruction unit is specifically configured to:
directly connecting all the obtained sampling points;
performing interpolation processing on the sampling points, and connecting all the sampling points after the interpolation processing; or alternatively
Performing interpolation processing on the sampling points, performing fitting processing on all sampling points after the interpolation processing,
wherein the interpolation processing includes linear interpolation processing and/or spline interpolation processing.
The embodiment of the application also provides a photoelectric detection system, which can comprise the signal sampling device and a detector configured to send an analog signal to the signal sampling device.
The embodiment of the application also provides a signal sampling method, which can comprise the following steps:
comparing the received reference signal with an analog signal to be sampled in amplitude by a comparison unit and outputting a corresponding level signal according to a comparison result, wherein the reference signal is an aperiodic signal;
starting timing by a timing unit when triggered by the reference signal and outputting the recorded time when triggered by the level signal received from the comparing unit;
the sampling point of the analog signal is obtained by an obtaining unit according to the amplitude characteristic of the reference signal and the time output by the timing unit.
Optionally the method further comprises:
and a reconstruction unit performs reconstruction processing on the sampling points obtained by the obtaining unit to obtain a reduction waveform of the analog signal.
Optionally, the step of reconstructing the sampling points obtained by the obtaining unit by a reconstruction unit includes:
directly connecting all the obtained sampling points;
performing interpolation processing on the sampling points, and connecting all the sampling points after the interpolation processing; or alternatively
Performing interpolation processing on the sampling points, performing fitting processing on all sampling points after the interpolation processing,
wherein the interpolation processing includes linear interpolation processing and/or spline interpolation processing.
As can be seen from the technical solution provided by the above embodiments of the present application, the signal sampling apparatus provided by comparing the amplitudes of the reference signal and the analog signal to be sampled by using the comparing unit, the timing unit starts timing when triggered by the reference signal and outputs the recorded time when triggered by the level signal received from the comparing unit, and the obtaining unit obtains the sampling point of the analog signal according to the amplitude characteristic of the reference signal and the time output by the timing unit, without a plurality of voltage comparators and time-to-digital converters, which can reduce the system cost, power consumption and process complexity.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a prior art MVT sampling circuit;
FIG. 2 is a schematic diagram of a signal sampling device according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a sampling point obtained by sampling a pulse signal by using a signal sampling device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a signal sampling device according to another embodiment of the present application;
fig. 5 is a schematic structural diagram of a signal sampling device according to another embodiment of the present application;
FIG. 6 is a schematic diagram of a photoelectric detection system according to an embodiment of the present application;
FIG. 7 is a flow chart of a signal sampling method according to an embodiment of the present application;
fig. 8 is a flowchart of a signal sampling method according to another embodiment of the present application.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application, and it is apparent that the described embodiments are only for explaining a part of the embodiments of the present application, not all the embodiments, and are not intended to limit the scope of the present application or the claims. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, shall fall within the scope of the application.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected/coupled" to another element, it can be directly connected/coupled to the other element or intervening elements may also be present. The term "connected/coupled" as used herein may include electrically and/or mechanically physical connections/couplings. The term "comprising" as used herein refers to the presence of a feature, step or element, but does not exclude the presence or addition of one or more other features, steps or elements. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
In addition, in the description of the present application, the terms "first," "second," and the like are used merely for descriptive purposes and to distinguish between similar objects, and there is no order of precedence between the two, nor should it be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In an embodiment of the application, the reference signal may be any signal that can be expressed by a time function, i.e. a signal that can determine the amplitude of the signal at any instant in time. That is, the amplitude of the reference signal may vary with time according to a predetermined rule, and the amplitude characteristic thereof may be expressed as y=f (t). Wherein y is the amplitude; t is time; f (t) is a time function, which represents a preset law. The expression is not limited to a certain functional relationship or a lookup table, and only needs to have a certain corresponding relationship. Preferably, the reference signal is an aperiodic signal.
The analog signal to be sampled may be a pulse signal, for example, a scintillation pulse signal, or may be other signals. The amplitude may refer to an electrical amplitude such as voltage or current, and may also refer to an amplitude of other properties.
The following describes in detail the signal sampling device, system and method provided by the embodiment of the present application with reference to the accompanying drawings.
As shown in fig. 2, an embodiment of the present application provides a signal sampling apparatus, which includes a comparing unit 110, a timing unit 120, and an obtaining unit 130. Wherein the comparing unit 110 may be configured to compare the received reference signal with an analog signal to be sampled in amplitude and output a corresponding level signal according to the comparison result, wherein the reference signal is an aperiodic signal; the timing unit 120 may be configured to start timing when triggered by the reference signal and output the recorded time when triggered by the level signal received from the comparison unit 110; the obtaining unit 130 may be configured to obtain the sampling point of the analog signal according to the amplitude characteristic of the reference signal and the time recorded by the timing unit.
The comparison unit 110 may be a voltage comparator or a current comparator, and may be implemented through a Low Voltage Differential Signaling (LVDS) interface or a residual continuous termination logic (SSTL) interface in a Field Programmable Gate Array (FPGA) chip, and may also be implemented through a specific chip (e.g., a common chip such as the model ADCMP572BCPZ-R2 or the Max9602EUG, but not limited thereto). In addition, the comparison unit 110 may include two inputs (e.g., a forward input and a reverse input) that may be used to receive analog signals from an external device (e.g., a radiation detector such as a PET detector) and reference signals from a signal generation unit (to be described later), respectively.
For the case where the positive input terminal of the comparison unit 110 receives the reference signal and the negative input terminal thereof receives the analog signal, the comparison unit 110 may output a high level signal when the amplitude of the reference signal is greater than or equal to the amplitude of the analog signal, which may be represented by "1", and may output a low level signal when the amplitude of the reference signal is less than the amplitude of the analog signal, which may be represented by "0". For the case where the positive input of the comparison unit 110 receives an analog signal and the negative input thereof receives a reference signal, the comparison unit may output a high level signal when the amplitude of the reference signal is smaller than that of the analog signal, and may output a low level signal when the amplitude of the reference signal is greater than or equal to that of the analog signal.
The timing unit 120 may be implemented by logic resources in an FPGA chip, or may be implemented by a dedicated chip (e.g., an ASIC chip), which may be any unit, module, circuit, device, etc. capable of recording a period of time, such as a time-to-digital converter (TDC) or a time-to-voltage converter (TVC). The timing unit 120 may be used to record and output the time when the level signal received from the comparing unit 110 generates an edge transition (e.g., a rising edge transition or a falling edge transition). Specifically, the timing unit 120 may start timing when the external device generates the reference signal and receive the level signal from the comparison unit 110, and each time the level signal received from the comparison unit 110 generates an edge transition, the timing unit 120 may output the recorded time and may simultaneously keep timing all the time or restart timing after reset until the acquisition of the sampling point is completed.
The obtaining unit 130 may comprise a decoder, and the obtaining unit 130 may be configured to determine a time to be acquired according to the time output by the timing unit 120, and then determine an amplitude to be acquired according to the determined time in combination with an amplitude characteristic (i.e., y=f (t)) of the reference signal, so as to obtain a sampling point of the analog signal, which is characterized by the time and the amplitude.
For the case where the timing unit 120 keeps timing all the time when the level signal makes an edge transition, the obtaining unit 130 may directly determine the time output by the timing unit 120 each time as the time corresponding to one sampling point, and calculate the amplitude corresponding to the sampling point according to the time and the amplitude characteristic of the reference signal, so that a plurality of sampling points may be obtained.
For the case where the timing unit 120 stops timing when the level signal generates an edge transition and restarts timing after reset, the obtaining unit 140 may calculate a time corresponding to each sampling point according to the following formula, and calculate an amplitude corresponding to each sampling point using the calculated time in combination with an amplitude characteristic (y=f (t)) of the reference signal:
t i ＝t i-1 +Δt i
y i ＝f(t i )
wherein t is i And y i Respectively representing the time and the amplitude corresponding to the ith sampling point; Δt (delta t) i Representing the i-th time recorded by the timing unit; f (t) i ) Representing an amplitude characteristic of the reference signal; i is a positive integer, and when i=1, t 0 ＝0。
Fig. 3 shows a schematic diagram of the results of the sampling points obtained after processing by the obtaining unit 130. As can be seen from fig. 3, the signal sampling device according to the present application is used to sample the pulse signal, so that more sampling points (for example, P1 to P4) can be obtained, and the recovery accuracy of the subsequent signal can be ensured.
In another embodiment of the present application, as shown in fig. 4, the signal sampling apparatus may further include: a signal generation unit 140, which may be configured to generate a reference signal; and a control unit 150, which may be configured to control the timing unit 120 to start timing when the signal generation unit 140 generates the reference signal. The signal generating unit 140 and/or the control unit 150 may be implemented by an LC oscillating circuit, an RC oscillating circuit, a quartz crystal oscillator, a direct digital frequency synthesizer (DDS) chip, or the like.
In another embodiment of the present application, as shown in fig. 5, the signal sampling apparatus may further include a reconstruction unit 160, which may be configured to perform reconstruction processing on the sampling points obtained by the obtaining unit 130 to obtain a restored waveform of the analog signal. The reconstruction unit 160 may directly connect all the obtained sampling points to obtain a restored waveform of the analog signal without performing any fitting process, which may increase the data processing speed and reduce the memory consumption. The reconstruction unit 160 may perform interpolation processing on the obtained sampling points, and connect all the sampling points after the interpolation processing; the obtained sampling points may also be fitted directly with a priori model or feature function of the analog signal (e.g., y (t) =a x exp (- (t-d)/b) x (1-exp (- (t-d)/c))); it is also possible to perform interpolation processing on the obtained sampling points and perform fitting processing on all the sampling points after the interpolation processing, wherein the interpolation processing includes linear interpolation processing and/or spline interpolation processing. By carrying out interpolation processing and/or fitting processing on the sampling points, the recovery precision of the analog signals can be improved.
For the specific process of interpolation processing and fitting processing on the sampling points, reference may be made to related descriptions in the prior art, and details are not repeated here.
As is apparent from the above description, the signal sampling apparatus provided by the embodiment of the present application mainly uses the comparison unit to compare the amplitudes of the reference signal and the analog signal to be sampled, the timing unit starts timing when triggered by the reference signal and outputs the recorded time when triggered by the level signal received from the comparison unit, and the obtaining unit obtains the sampling point of the analog signal according to the amplitude characteristic of the reference signal and the time output by the timing unit, without a plurality of voltage comparators and time-to-digital converters. For example, for acquiring 16 sampling points, the MVT sampling circuit in the prior art needs 8 voltage comparators and 16 TDCs, whereas the present application needs only one voltage comparator and one TDC, which obviously can reduce the cost, power consumption and complexity of the system.
The embodiment of the present application also provides a photoelectric detection system, as shown in fig. 6, which may include the signal sampling device described in the above embodiment and a detector configured to send a pulse signal to the signal sampling device. The detector may be any radiation detector capable of detecting radioactive rays, such as a PET detector, and may include a scintillation crystal and a photoelectric converter coupled to each other.
The embodiment of the application also provides a signal sampling method executed by the signal sampling device, as shown in fig. 7, which may include the following steps:
s1: the received reference signal is amplitude-compared with the analog signal to be sampled by the comparison unit and a corresponding level signal is output according to the comparison result.
The reference signal may be an aperiodic signal and the analog signal may be a scintillation pulse signal.
After receiving the reference signal and the analog signal to be sampled, the comparison unit may perform amplitude comparison of the received reference signal and the analog signal to be sampled, and output a corresponding level signal according to the comparison result. For example, the comparison unit may output a high level when the amplitude of the analog signal reaches the amplitude of the reference signal, and may output a low level when the amplitude of the analog signal is smaller than the amplitude of the reference signal.
S2: the timing unit starts timing under the triggering of the reference signal and outputs the recorded time under the triggering of the level signal received from the comparing unit.
The timing unit may start timing and receive the level signal output from the comparing unit when the external device generates the reference signal, and may output the recorded time every time the level signal generates the edge transition, and may keep timing or stop timing all the time and restart timing after reset.
S3: the sampling point of the analog signal is obtained by the obtaining unit according to the amplitude characteristic of the reference signal and the time recorded by the timing unit.
After the obtaining unit receives the time recorded by the timing unit, the obtaining unit can determine the time corresponding to the sampling point to be acquired according to the time recorded by the timing unit, and then calculate the amplitude corresponding to the sampling point according to the determined time and combining the amplitude characteristic of the reference signal, so as to obtain the sampling point of the analog signal, which is characterized by the time and the amplitude.
In another embodiment of the present application, as shown in fig. 8, the method may further include:
s4: the sampling points obtained by the obtaining unit are subjected to reconstruction processing by a reconstruction unit to obtain a restored waveform of the analog signal.
For the detailed description of the above steps S1 to S4, reference may be made to the detailed descriptions of the comparing unit, the timing unit, the obtaining unit and the reconstructing unit in the above embodiments, which are not described herein again.
As can be seen from the above description, the signal sampling method provided by the embodiment of the present application compares the amplitude of the reference signal and the analog signal to be sampled by using the comparing unit, the timing unit starts timing under the triggering of the reference signal and outputs the recorded time under the triggering of the level signal received from the comparing unit, and the obtaining unit obtains the sampling point of the analog signal according to the amplitude characteristic of the reference signal and the recorded time of the timing unit, instead of comparing the intermittent values of the plurality of voltage thresholds with the amplitude of the pulse signal, which makes the number of sampling points collected relatively more, so that the sampling precision and accuracy of the analog signal can be improved, and fitting processing of the collected sampling points can be unnecessary, which can improve the data processing speed and reduce the system power consumption.
The systems, devices, units, etc. described in the above embodiments may be implemented by a semiconductor chip, a computer chip, and/or an entity, or by a product having a certain function. For convenience of description, the above devices are described as being functionally divided into various units, respectively. Of course, the functions of the units may be implemented in the same chip or chips when implementing the application.
Although the present application provides method operational steps as described in the above embodiments or flowcharts, more or fewer operational steps may be included in the method, either on a routine basis or without inventive labor. In the steps where there is logically no necessary causal relationship, the execution order of the steps is not limited to the execution order provided by the embodiment of the present application.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The embodiments described above are described in order to facilitate the understanding and use of the present application by those of ordinary skill in the art. It will be apparent to those skilled in the art that various modifications can be made to these embodiments and that the general principles described herein may be applied to other embodiments without the need for inventive faculty. Therefore, the present application is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present application.
Claims (8)
1. A signal sampling device, the device comprising:
a comparison unit configured to compare a received reference signal with an analog signal to be sampled in amplitude and output a corresponding level signal according to a comparison result, wherein the reference signal is an aperiodic signal;
a timing unit configured to start timing when triggered by the reference signal and output a recorded time when triggered by the level signal received from the comparing unit;
an obtaining unit configured to obtain a sampling point of the analog signal according to an amplitude characteristic of the reference signal and the time output by the timing unit;
a signal generation unit configured to generate the reference signal;
a control unit configured to control the timing unit to start timing when the signal generation unit generates the reference signal;
wherein the obtaining unit is specifically configured to:
for the case that the timing unit stops timing and resumes timing after reset when the level signal received from the comparing unit generates an edge transition, calculating a time corresponding to each sampling point according to the following formula, and calculating an amplitude corresponding to each sampling point using the time and the amplitude characteristic of the reference signal:
t i ＝t i-1 +Δt i
y i ＝f(t i )
wherein t is i And y i Respectively representing the time and the amplitude corresponding to the ith sampling point; Δt (delta t) i Representing the i-th time recorded by the timing unit; f (t) i ) Representing an amplitude characteristic of the reference signal; i is a positive integer, and when i=1, t 0 ＝0。
2. The apparatus of claim 1, wherein the comparison unit comprises a voltage comparator or a current comparator, and the timing unit comprises a time-to-digital converter or a time-to-voltage converter.
3. The apparatus according to any one of claims 1-2, wherein the apparatus further comprises:
and a reconstruction unit configured to perform reconstruction processing on the sampling points obtained by the obtaining unit to obtain a restored waveform of the analog signal.
4. The apparatus according to claim 3, characterized in that the reconstruction unit is specifically configured to:
directly connecting all the obtained sampling points;
performing interpolation processing on the sampling points, and connecting all the sampling points after the interpolation processing; or alternatively
Performing interpolation processing on the sampling points, performing fitting processing on all sampling points after the interpolation processing,
wherein the interpolation processing includes linear interpolation processing and/or spline interpolation processing.
5. A photodetection system, characterized in that it comprises a signal sampling device according to any of claims 1-4 and a detector configured to send an analog signal to the signal sampling device.
6. A signal sampling method based on a signal sampling device according to any one of claims 1-4, characterized in that the method comprises:
comparing the received reference signal with an analog signal to be sampled in amplitude by a comparison unit and outputting a corresponding level signal according to a comparison result, wherein the reference signal is an aperiodic signal;
starting timing by a timing unit when triggered by the reference signal and outputting the recorded time when triggered by the level signal received from the comparing unit;
the sampling point of the analog signal is obtained by an obtaining unit according to the amplitude characteristic of the reference signal and the time output by the timing unit.
7. The method of claim 6, wherein the method further comprises:
and a reconstruction unit performs reconstruction processing on the sampling points obtained by the obtaining unit to obtain a reduction waveform of the analog signal.
8. The method according to claim 7, wherein the step of reconstructing the sample points obtained by the obtaining unit by a reconstruction unit comprises:
directly connecting all the obtained sampling points;
performing interpolation processing on the sampling points, and connecting all the sampling points after the interpolation processing; or alternatively
Performing interpolation processing on the sampling points, performing fitting processing on all sampling points after the interpolation processing,
wherein the interpolation processing includes linear interpolation processing and/or spline interpolation processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010590348.6A CN111669182B (en) | 2020-06-24 | 2020-06-24 | Signal sampling device, system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010590348.6A CN111669182B (en) | 2020-06-24 | 2020-06-24 | Signal sampling device, system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111669182A CN111669182A (en) | 2020-09-15 |
| CN111669182B true CN111669182B (en) | 2023-11-03 |
Family
ID=72389651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010590348.6A Active CN111669182B (en) | 2020-06-24 | 2020-06-24 | Signal sampling device, system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111669182B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103961126A (en) * | 2013-02-05 | 2014-08-06 | 苏州瑞派宁科技有限公司 | Threshold value rectifying method of multi-threshold value sampling digitalization device |
| CN107450092A (en) * | 2017-08-23 | 2017-12-08 | 中派科技（深圳）有限责任公司 | For measuring the device of photon information |
| CN109444559A (en) * | 2018-10-26 | 2019-03-08 | 苏州瑞迈斯医疗科技有限公司 | The method of sampling, method for reconstructing and the device of pulse signal |
-
2020
- 2020-06-24 CN CN202010590348.6A patent/CN111669182B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103961126A (en) * | 2013-02-05 | 2014-08-06 | 苏州瑞派宁科技有限公司 | Threshold value rectifying method of multi-threshold value sampling digitalization device |
| CN107450092A (en) * | 2017-08-23 | 2017-12-08 | 中派科技（深圳）有限责任公司 | For measuring the device of photon information |
| CN109444559A (en) * | 2018-10-26 | 2019-03-08 | 苏州瑞迈斯医疗科技有限公司 | The method of sampling, method for reconstructing and the device of pulse signal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111669182A (en) | 2020-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8970421B1 (en) | High resolution sampling-based time to digital converter | |
| US20090167586A1 (en) | Solid-state imaging device, driving method thereof, and camera | |
| CN111756376B (en) | Signal sampling device, system and method | |
| CN109444559B (en) | Pulse signal sampling method, pulse signal reconstruction method and pulse signal reconstruction device | |
| CN109274369B (en) | Method and device for digitizing scintillation pulse | |
| US9529336B2 (en) | Analog to digital converter compatible with image sensor readout | |
| KR101996491B1 (en) | Double data rate counter, and analog-digital converting apparatus and cmos image sensor thereof using that | |
| EP3070847B1 (en) | Method and device for acquiring time point where glimmering pulse passes over threshold | |
| CN106772185B (en) | Signal interval or period detection method and device for oscilloscope | |
| CN102411092A (en) | Time domain triggering in a test and measurement instrument | |
| US7844020B2 (en) | Transmission system, transmitter, receiver, and transmission method | |
| JP2011191178A (en) | Time-width measuring device | |
| CN111669182B (en) | Signal sampling device, system and method | |
| US10707891B2 (en) | Transition state acquisition device, time-to-digital converter, and A/D conversion circuit | |
| CN110988961B (en) | Signal processing method and device and detection system | |
| US6950375B2 (en) | Multi-phase clock time stamping | |
| US9793914B2 (en) | Analog-to-digital converter, electronic device, and method of controlling analog-to-digital converter | |
| JP2009038821A (en) | Analog signal comparator | |
| CN113126110A (en) | Device and method for detecting arrival time of acoustic echo | |
| CN110739971A (en) | Determination method, device, equipment and medium of ADC sampling point sampling voltage | |
| RU162372U1 (en) | MICROCONTROLLER ADC USING THE TRANSITION PROCESS IN THE RC CIRCUIT | |
| US9807334B1 (en) | Analog to digital conversion with enhanced precision | |
| KR19990045472A (en) | Analog-to-digital conversion device with synchronous output signal | |
| JPH06252761A (en) | Digital encoding device | |
| JPS6348456B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Room 201-1, North building, No.17 building, No.8 Jinfeng Road, high tech Zone, Suzhou City, Jiangsu Province Applicant after: Suzhou Ruimeisi Technology Co.,Ltd. Address before: Room 201-1, North building, No.17 building, No.8 Jinfeng Road, high tech Zone, Suzhou City, Jiangsu Province Applicant before: SUZHOU RUIMAISI MEDICAL TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |