CN202661519U - Multiple interlaced sampling type oscilloscope - Google Patents
Multiple interlaced sampling type oscilloscope Download PDFInfo
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- CN202661519U CN202661519U CN 201220307783 CN201220307783U CN202661519U CN 202661519 U CN202661519 U CN 202661519U CN 201220307783 CN201220307783 CN 201220307783 CN 201220307783 U CN201220307783 U CN 201220307783U CN 202661519 U CN202661519 U CN 202661519U
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Abstract
The utility model relates to a multiple interlaced sampling type oscilloscope, which comprises a processing and sampling conversion module, a digital signal processing unit, an operation module and a display, wherein the processing and sampling conversion module comprises four signal processing units, a switching unit and two interlaced sampling type analogue-to-digital converters; two of the four signal processing units are selectively switched to be connected with one analogue input ends of the interlaced sampling type analogue-to-digital converters through the switching unit, and the other two of the four signal processing units are selectively switched to be connected with the other two analogue input ends of the interlaced sampling type analogue-to-digital converters; each interlaced sampling type analogue-to-digital converter is connected to the digital signal processing unit; and the digital data of the interlaced sampling type analogue-to-digital converters are processed into waveform data for output and display on the display. Therefore, the interlaced sampling type analogue-to-digital converters can be switched to sample display signals received by the same signal processing unit or a plurality of signal processing units respectively to improve sampling frequency and operational performance.
Description
Technical field
The utility model is about a kind of oscillograph, espespecially a kind of multiple interlaced sampling formula oscillograph.
Background technology
Oscillograph is existing a kind of quite common analog information acquisition instrument, and its purposes mainly is to capture simulating signal, and waveform corresponding to the simulating signal that will capture is shown on the screen.
Existing oscillograph usually can be used for two to four of comparisons input waveform, and therefore existing oscillograph has the function that shows many signals usually, and for reaching this function; existing oscillograph is the circuit that adopts multi-channel sampling; below sincerely further specify, see also Fig. 6, existing oscillograph includes:
One processes and sample conversion module 50, it includes four signal processing units 51 and four analog-digital converters, each signal processing unit 51 has a signal input part 511, and in order to receive outside signal to be shown, these four signal processing units 51 are to be connected to respectively this four analog-digital converters 52, with with signal to be shown input analog- digital converter 52,52 of each analog-digital converters are exported after signal to be shown is treated to corresponding set of number data;
One digital signal processing unit 60, four analog-digital converters 52 of itself and this are connected, and after receiving the numerical data of this four analog-digital converters 52 outputs, and selecting type is to export behind the corresponding Wave data with the Digital data processing of each analog-digital converter 52;
One operational module 70, it is connected with this digital signal processing unit 60, and for user operation, and the Wave data of setting digital signal processing unit 60 these four signal processing unit 51 correspondences of output is whether;
One display 80 is to be connected with this digital signal processing unit 60, and receives Wave data and show corresponding waveform.
Whether above-mentioned oscillograph is to operate for the user with operational module, be shown on the display to determine the to be shown of four signal processing units receptions; Yet, when the user only shows the signal to be shown of single input end, only having an analog-digital converter to be used for treating display samples, its excess-three analog-digital converter is idle, therefore, the sample frequency of this signal to be shown depends on the sample frequency of its corresponding analog-digital converter fully, for example the analog-digital converter sample frequency is all 1GHz, then no matter operational module is set will show for what signals to be shown, its the highest sample frequency is all 1GHz, if promote sample frequency, then must once change four analog-digital converters that sample frequency is high, will significantly raise the cost, even and the high analog-digital converter of employing sample frequency, above-mentioned oscillograph is when showing single signal to be shown, remain three analog-digital converters idle, operation efficiency is low, therefore existing a kind of interlaced sampling formula analog-digital converter, it has mainly integrated two analog-digital converters, and time division multiplexing is sampled and digitizing to one to two signal to be shown.
Above-mentioned interlaced sampling formula analog-digital converter has two analog input ends, and have respectively can two simulating signal sampling or to the function of same simulating signal sampling; When only to same simulating signal sampling, two analog-digital converters can be sampled and digitizing by the same input signal of ordered pair when different; In the time will sampling to two simulating signals respectively, two analog-digital converters are then respectively to two input signals samplings and digitizings; So, two the analog-digital converter sample frequency built-in when interlaced sampling formula analog-digital converter are all 1GHz, sample frequency that namely can 2GHz is to single input signal sampling, and with the sample frequency of 1GHz two input signals sampled, and helps to improve operation efficiency; But this kind interlaced sampling formula analog-digital converter has the restriction of integrating quantity, the analog-digital converter quantity of its integration is more, then the problem of phase deviation, matching is more serious, therefore singly there is interlaced sampling formula analog-digital converter still to be not enough to provide the function that four digital signal processing units all can interlaced sampling, its effect that promotes sample frequency and raising operation efficiency is still limited, needs further to cooperate evolutionary approach.
Summary of the invention
In view of above-mentioned oscillograph can't provide the technological deficiency that four signal processing units all can interlaced sampling, fundamental purpose of the present utility model is for proposing a kind of multiple interlaced sampling formula oscillograph.
Wanting to reach the employed technical way of above-mentioned purpose is that multiple interlaced sampling formula oscillograph includes:
One processes and the sample conversion module, it includes four signal processing units, one switches unit and two interlaced sampling formula analog-digital converters, each signal processing unit has a signal input part, to receive outside signal to be shown, these four signal processing units are to be connected to respectively this switch unit, each interlaced sampling formula analog-digital converter has two analog input ends, and export after will being treated to corresponding numerical data from the signal to be shown of this two analog input ends input, this two analog input end is connected with this switch unit, and a wherein analog input end of each interlaced sampling formula analog-digital converter is to be connected to wherein two signal processing units by the switch unit selecting type, another analog input end then is connected in addition two signal processing units by this switch unit selecting type, again, this switch unit has the switching controls end;
One digital signal processing unit, it is connected with switching controls end and this two interlaced samplings formula analog-digital converter of the switch unit of this processing and sample conversion module, and have two sampling time sequences setting end and a selecting type numerical data is treated to the output terminal of exporting behind the corresponding Wave data according to sampling time sequence, it is to be connected with this two interlaced samplings formula analog-digital converter respectively that this two sampling time sequence is set end, to switch this switch unit and to set the sampling time sequence of this two interlaced samplings formula analog-digital converter, and after receiving the numerical data of this two interlaced samplings formula analog-digital converter output, selecting type is treated to corresponding Wave data and output with four numerical datas corresponding to signal processing unit according to its sampling time sequence;
One operational module, it has one in order to set four Wave data whether setting ends that signal processing unit is corresponding of output, and the setting end of operational module is connected with this digital signal processing unit, whether to set Wave data corresponding to four signal processing units of digital signal processing unit output;
One display is to be connected with the output terminal of this digital signal processing unit, and receives Wave data and show corresponding waveform.
During enforcement, described switch unit includes four change-over switches, each change-over switch has jointly end, a Chang Kaiduan and a normal-closed end, the common end of these four change-over switches is connected to respectively two analog input ends of this two interlaced samplings formula analog-digital converter, and be connected in two change-over switches of same interlaced sampling formula analog-digital converter, wherein Chang Kaiduan and a normal-closed end that switches switch is connected to respectively wherein binary signal processing unit, and another change-over switch Chang Kaiduan and normal-closed end are connected to respectively in addition two signal processing units.
During enforcement, described signal processing unit includes:
One voltage superimposer, it is connected to this dual output amplifier; And
The a pair of output amplifier, it has the output terminal of the identical amplifying signal of two outputs, and this two output terminal is connected to respectively two change-over switches corresponding to dual output amplifier.
During enforcement, the dual output amplifier that each is differential and this two interlaced samplings formula analog-digital converter are connected to a bucking voltage setting apparatus that is set with two different common mode voltages.
During enforcement, described digital signal processing unit includes:
One in order to export the sample frequency generator of sampling pulse signal, and it has two-terminal and sets end as this two sampling time sequence respectively;
One sampling memory; And
One in order to set sampling time sequence and to be the controlling of sampling module of corresponding Wave data with Digital data processing according to sampling time sequence, its setting end, this sample frequency generator and this sampling memory with the switching controls end of this switch unit, this two interlaced samplings formula analog-digital converter, this operational module is connected, and has a terminal as the output terminal of digital signal processing unit.
Thus when Wave data corresponding to operational module set and display single signal processing unit, this digital signal processing unit just changeable this switch unit makes being connected to this two interlaced samplings formula analog-digital converter by signal processing unit, and set this two interlaced samplings formula analog-digital converter with different sampling time sequence to same signal sampling to be shown, and the Digital data processing of two interlaced sampling formula analog-digital converters being exported according to sampling time sequence by digital signal processing unit at last is complete Wave data, to improve sample frequency; So, be that the interlaced sampling formula analog-digital converter of available two analog input ends provides the function that four processing units all can interlaced sampling, sample frequency when improving the single display waveform, also promote operation efficiency, and when switch showing any one or any two signals to be shown, these two interlaced sampling formula analog-digital converters all do not have idle situation with the most high-effect to this or two signal samplings to be shown, promote the utilization usefulness of analog-digital converter.
Description of drawings
Fig. 1: be circuit block diagram of the present utility model.
Fig. 2: be the detailed circuit calcspar of Fig. 1 processing and sample conversion module.
Fig. 3: the sampling schematic diagram that shows the single display waveform for the utility model.
Fig. 4: the sampling schematic diagram that shows two display waveforms for the utility model.
Fig. 5: the sampling schematic diagram that shows four display waveforms for the utility model.
Fig. 6: be existing oscillographic circuit block diagram.
Embodiment
Below cooperate the preferred embodiment of graphic and the utility model, further setting forth the utility model is to reach the technological means that predetermined utility model purpose is taked.
See also Fig. 1, the multiple interlaced sampling formula of the utility model oscillograph includes:
One processes and sample conversion module 10, it includes four signal processing units 11, one switches unit 12 and two interlaced sampling formula analog-digital converters 13, each signal processing unit has a signal input part 111, to receive outside signal to be shown, these four signal processing units 11 are to be connected to respectively this switch unit 12, each interlaced sampling formula analog-digital converter 13 has two analog input ends 131, and export after will being treated to corresponding numerical data from the signal to be shown of these two analog input ends, 131 inputs, this two analog input end 131 is connected with this switch unit 12, and a wherein analog input end 131 of each interlaced sampling formula analog-digital converter 13 is to be connected to wherein two signal processing units 11 by switch unit 12 selecting types, 131 of another analog input ends are connected in addition two signal processing units 11 by these switch unit 12 selecting types, again, this switch unit 12 has switching controls end 121;
One digital signal processing unit 20, it is connected with switching controls end 121 and this two interlaced samplings formula analog-digital converter 13 of this processing and sample conversion module 10 switch units 12, and have two sampling time sequences and set end TS1, TS2 and a selecting type are treated to the output terminal 201 of exporting behind the corresponding Wave data with numerical data according to sampling time sequence, this two sampling time sequence is set end TS1, TS2 is connected with this two interlaced samplings formula analog-digital converter 13 respectively, to switch this switch unit 12 and to set the sampling time sequence of this two interlaced samplings formula analog-digital converter 13, and after receiving the numerical data of these two interlaced samplings formula analog-digital converter, 13 outputs, selecting type is treated to corresponding Wave data and output with the numerical data of four signal processing unit 11 correspondences according to its sampling time sequence;
One operational module 30, it has one in order to set four Wave data whether setting ends 31 that signal processing unit is corresponding of output, with the Wave data of setting four signal processing unit 11 correspondences of digital signal processing unit 20 outputs whether and the setting end 31 of operational module 30 is connected with this digital signal processing unit 20;
One display 40 is to be connected with the output terminal of this digital signal processing unit 20, and receives Wave data and show corresponding waveform.
Please further consult Fig. 2, described switch unit 12 includes four change-over switches 122, each change-over switch 122 has a common end CM, one Chang Kaiduan NO and a normal-closed end NC, the common end CM of these four change-over switches 122 is connected to respectively two analog input ends 131 of this two interlaced samplings formula analog-digital converter 13, and be connected in two change-over switches 122 of same interlaced sampling formula analog-digital converter 13, wherein Chang Kaiduan NO and a normal-closed end NC who switches switch 122 is connected to respectively wherein binary signal processing unit 11, and another change-over switch 122 Chang Kaiduan NO and normal-closed end NC are connected to respectively in addition two signal processing units 11.
Described signal processing unit 11 includes a voltage superimposer 112 and a pair of output amplifier 113, this voltage superimposer 112 is to be connected to this dual output amplifier 113, and the stack DC voltage is on signal to be shown, this dual output amplifier 113 has two output terminals 114, this two output terminal 114 is after being connected to respectively two change-over switches 122 of dual output amplifier 113 correspondences and signal to be shown being amplified, by signal to be shown after the identical amplification of these two output terminals, 114 outputs; Be connected respectively the signal to be shown of another output terminal 114 of signal reflex image that causes in the time of can avoiding a wherein switching switch 112 disconnection with two change-over switches by dual output amplifier 113 2 output terminals 114; Again, each dual output amplifier 113 can be differential amplifier, and two output terminals 114 are differential output end, to export differential signal to be shown, so can further promote and avoid the interactional effect of reflected signal; In addition, each differential dual output amplifier 113 can be connected to a bucking voltage (Offset) setting apparatus 14 with this two interlaced samplings formula analog-digital converter 13, this bucking voltage setting apparatus 14 is set with two different common mode voltages, and provide respectively this two interlaced samplings formula analog-digital converter 13 2 different common mode voltage, and provide differential dual output amplifier 113 and corresponding interlaced sampling formula analog-digital converter 13 identical common mode voltage; So can improve single differential dual output amplifier 113 respectively with the consistance of two interlaced sampling formula analog-digital converter 13 common modes.
Again just as shown in Figure 1, described digital signal processing unit 20 includes a sample frequency generator 21, one controlling of sampling module 22 and a sampling memory 23, this sample frequency generator 21 has two-terminal and sets end TS1 as this two sampling time sequence respectively, TS2, to be connected with this two interlaced samplings formula analog-digital converter 13, and the output sampling pulse signal gives this two interlaced samplings formula analog-digital converter 13, to set the sampling time sequence of interlaced sampling formula analog-digital converter 13, this controlling of sampling module 22 is the switching controls ends 121 with this switch unit, this two interlaced samplings formula analog-digital converter 13, this sample frequency generator 21, this sampling memory 23, the output terminal 31 of this operational module 30 connects, and has a terminal as the output terminal 201 of digital signal processing unit, and be connected to this display 40, to switch this switch unit 12, and set the sampling pulse signal of these sample frequency generator 22 outputs, and after receiving the numerical data of these two interlaced samplings formula analog-digital converter, 13 outputs, be stored in first this sampling memory 23, again according to the setting of operational module 30, and selecting type is treated to corresponding Wave data and output with the numerical data of four signal processing unit 11 correspondences according to its sampling time sequence and gives display 40 and show:
When operational module 30 is held the signal to be shown of 31 set and display single signal processing units, 11 receptions with setting, this controlling of sampling module 22 is switched this single signal processing unit 11 and is connected with two interlaced sampling formula analog-digital converters 13, and make the sampling pulse signal of the corresponding two-phase anticoincidence pulse of these sample frequency generator 21 outputs give this two interlaced samplings formula analog-digital converter 13, as shown in Figure 3, and in the set of number data D1 of each two interlaced sampling formula analog-digital converters, 13 output, behind the D2, according to sampling time sequence with two group digital data D1, D2 save as one complete to should single signal processing unit 11 receive the Wave data L of waveform to be shown, and export this complete Wave data L;
When signal to be shown that two signal processing units of operational module 30 set and displays 11 receive, this controlling of sampling module 22 is switched these two signal processing units 11 and is connected with two interlaced sampling formula analog-digital converters 13 respectively, and as shown in Figure 4, behind the set of number data D1, the D2 that receive each interlaced sampling formula analog-digital converter 13 output, storing respectively two group digital data D1, D2 is two Wave data L1, L2, and exports this two Wave data L1, L2;
When signal to be shown that the signal processing unit 11 of operational module 30 set and displays more than three receives, this controlling of sampling module 22 is switched these four signal processing units 11 and is connected with two analog input ends 131 of two interlaced sampling formula analog-digital converters 13 respectively, and as shown in Figure 5, in at least three group digital data D1 that receive this two interlaced samplings formula analog-digital converter 13 and export respectively, D2, D3, behind the D4 (expression is four groups among the figure), store respectively this at least group digital data be at least three Wave data L1, L2, L3, expression is four groups among the L4(figure), and export this at least three Wave data L1, L2, L3, L4.
According to above explanation, if take the highest sample frequency of each analog-digital converter as 2GHz for example, when can showing single waveform, oscillograph of the present utility model can reach the sample frequency of 4GHz, the sample frequency that is higher than single analog-digital converter, compared to the traditional oscillograph that does not have the interlaced sampling function, the highest sample frequency that can only arrive 2GHz of traditional oscillograph; And oscillograph of the present utility model, no matter the user switch show any one, any two or any three signals to be shown, these two interlaced sampling formula analog-digital converters 13 are all treated the display sampling with the highest sample frequency, do not have the idle situation of analog-digital converter, traditional oscillograph then can make digital quantizer idle, therefore oscillograph of the present utility model also has higher operation efficiency.
In sum, if take the highest sample frequency of each interlaced sampling formula analog-digital converter as 2GHz, can reach the sample frequency of 4GHz during the single waveform of the utility model oscilloscope display, has high sample frequency, promote degree of accuracy, can reach the sample frequency of 2GHz when showing two waveforms, the waveform of demonstration more than three then has the sample frequency of 1GHz, so the utility model interlaced sampling formula analog-digital converter of being able to two analog input ends provides the function that four processing units all can multiple interlaced sampling, sample frequency when improving the single display waveform, and make interlaced sampling formula analog-digital converter not idle, also promote operation efficiency.
The above only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art, in the scope that does not break away from technical solutions of the utility model, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (5)
1. a multiple interlaced sampling formula oscillograph is characterized in that, includes:
One processes and the sample conversion module, it includes four signal processing units, one switches unit and two interlaced sampling formula analog-digital converters, each signal processing unit has one in order to receive the signal input part of outside signal to be shown, these four signal processing units are to be connected to respectively this switch unit, each interlaced sampling formula analog-digital converter has two analog input ends, this two analog input end is connected with this switch unit, and a wherein analog input end of each interlaced sampling formula analog-digital converter is to be connected to wherein two signal processing units by the switch unit selecting type, another analog input end then is connected in addition two signal processing units by this switch unit selecting type, again, this switch unit has the switching controls end;
One digital signal processing unit, it is connected with switching controls end and this two interlaced samplings formula analog-digital converter of the switch unit of this processing and sample conversion module, and have two sampling time sequences setting end and a selecting type numerical data is treated to the output terminal of exporting behind the corresponding Wave data according to sampling time sequence, it is to be connected with this two interlaced samplings formula analog-digital converter respectively that this two sampling time sequence is set end;
One operational module, it has one in order to four Wave data whether setting ends that signal processing unit is corresponding of setting output, and the setting end of operational module is connected with this digital signal processing unit;
One display is to be connected with the output terminal of this digital signal processing unit.
2. multiple interlaced sampling formula oscillograph according to claim 1, it is characterized in that, described switch unit includes four change-over switches, each change-over switch has one and jointly holds, one Chang Kaiduan and a normal-closed end, the common end of these four change-over switches is connected to respectively two analog input ends of this two interlaced samplings formula analog-digital converter, and be connected in two change-over switches of same interlaced sampling formula analog-digital converter, wherein Chang Kaiduan and a normal-closed end that switches switch is connected to respectively wherein binary signal processing unit, and another change-over switch Chang Kaiduan and normal-closed end are connected to respectively in addition two signal processing units.
3. multiple interlaced sampling formula oscillograph according to claim 1 and 2 is characterized in that, described signal processing unit includes:
One voltage superimposer, it is connected to this dual output amplifier; And
The a pair of output amplifier, it has the output terminal of the identical amplifying signal of two outputs, and this two output terminal is connected to respectively two change-over switches corresponding to dual output amplifier.
4. multiple interlaced sampling formula oscillograph according to claim 3 is characterized in that, the dual output amplifier that each is differential and this two interlaced samplings formula analog-digital converter are connected to a bucking voltage setting apparatus that is set with two different common mode voltages.
5. multiple interlaced sampling formula oscillograph according to claim 4 is characterized in that, described digital signal processing unit includes:
One in order to export the sample frequency generator of sampling pulse signal, and it has two-terminal and sets end as this two sampling time sequence respectively;
One sampling memory; And
One in order to set sampling time sequence and to be the controlling of sampling module of corresponding Wave data with Digital data processing according to sampling time sequence, its setting end, this sample frequency generator and this sampling memory with the switching controls end of this switch unit, this two interlaced samplings formula analog-digital converter, this operational module is connected, and has a terminal as the output terminal of digital signal processing unit.
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| CN 201220307783 CN202661519U (en) | 2012-06-27 | 2012-06-27 | Multiple interlaced sampling type oscilloscope |
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| CN 201220307783 CN202661519U (en) | 2012-06-27 | 2012-06-27 | Multiple interlaced sampling type oscilloscope |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880593A (en) * | 2014-02-28 | 2015-09-02 | 罗德施瓦兹两合股份有限公司 | Digital oscilloscope and a method with parallel acquisition and signal post-processing |
| CN105629016A (en) * | 2014-10-29 | 2016-06-01 | 江苏绿扬电子仪器集团有限公司 | Oscilloscope sampling and imaging system |
| CN108931955A (en) * | 2018-08-28 | 2018-12-04 | 康泰医学系统（秦皇岛）股份有限公司 | The analogue output unit of physiological signal |
| CN110221238A (en) * | 2019-06-28 | 2019-09-10 | 深圳市锐能微科技有限公司 | Detection circuit, method and the electric energy computation chip of bleeder circuit parameter |
-
2012
- 2012-06-27 CN CN 201220307783 patent/CN202661519U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880593A (en) * | 2014-02-28 | 2015-09-02 | 罗德施瓦兹两合股份有限公司 | Digital oscilloscope and a method with parallel acquisition and signal post-processing |
| CN104880593B (en) * | 2014-02-28 | 2019-10-22 | 罗德施瓦兹两合股份有限公司 | Digital oscilloscope and the parallel method obtained with signal post-processing |
| CN105629016A (en) * | 2014-10-29 | 2016-06-01 | 江苏绿扬电子仪器集团有限公司 | Oscilloscope sampling and imaging system |
| CN108931955A (en) * | 2018-08-28 | 2018-12-04 | 康泰医学系统（秦皇岛）股份有限公司 | The analogue output unit of physiological signal |
| CN108931955B (en) * | 2018-08-28 | 2023-12-26 | 康泰医学系统（秦皇岛）股份有限公司 | Analog output device for physiological signal |
| CN110221238A (en) * | 2019-06-28 | 2019-09-10 | 深圳市锐能微科技有限公司 | Detection circuit, method and the electric energy computation chip of bleeder circuit parameter |
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Granted publication date: 20130109 Termination date: 20170627 |