CN103954818A - Universal oscilloscope with storage function - Google Patents
Universal oscilloscope with storage function Download PDFInfo
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- CN103954818A CN103954818A CN201410203996.6A CN201410203996A CN103954818A CN 103954818 A CN103954818 A CN 103954818A CN 201410203996 A CN201410203996 A CN 201410203996A CN 103954818 A CN103954818 A CN 103954818A
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- oscilloscope
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- memory function
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Abstract
The invention discloses a universal oscilloscope with a storage function, and belongs to the field of electronic measuring instruments. The universal oscilloscope comprises a Y input circuit, a Y front amplifying circuit, a delay line, a rear amplifying circuit, an oscilloscope tube, a levelness generator, a time-base generator, a trigger waveshaping circuit, a low-pass filter circuit and a single-chip microcomputer. The universal oscilloscope can store measured information in real time and replay an aperiodic single-pulse signal as required or in a one step mode or continuously, and an engineer can completely observe the waveform, amplitude and pulse width of the signal.
Description
Technical field
The present invention relates to a kind of oscillograph, specifically a kind of general purpose oscialloscope with memory function, belongs to electronic measuring instrument field.
Background technology
Oscillograph is a kind of purposes electronic measuring instrument very widely, and the image that it can become people to see invisible naked eyes converting electrical signal is convenient to people and studies the change procedure of various electrical phenomenas, is the indispensable work of Electronics Engineer.At present, general two trace oscilloscope, if HH4310A/HH4311A, RS8 etc. are all without memory function, can meet the requirement of signal measurement.But, in engineering practice, a large amount of is some non-periodic single pulse signal, the appearing and subsiding of these signals is all paroxysmal, completes in the moment of Millisecond, delicate level or even nanosecond, engineering staff has little time observation signal at all and has just disappeared.
Summary of the invention
Goal of the invention: a kind of general purpose oscialloscope with memory function is provided, and the information of can real-time storage measuring, carries out playback as required.
Technical scheme: a kind of general purpose oscialloscope with memory function, comprise Y input circuit, Y pre-amplification circuit, delay line, rearmounted amplifying circuit, oscillatron, horizontal generator, time-base generator, triggering shaping circuit, low-pass filter circuit and single-chip microcomputer, measured signal is after the input of Y input circuit, be divided into two-way, one tunnel enters Y pre-amplification circuit, another road enters low-pass filter circuit, storage after A/D conversion, while carrying out signal playback, under Single-chip Controlling, the signal that enters Y pre-amplification circuit is the storage signal through D/A conversion.。
The ultimate principle that embeds memory function in general purpose oscialloscope is, with A/D converter, simulate signal is converted to digital signal, then store in RAM, need to show time, the digital signal of the storage in RAM is read in order, recover simulate signal by D/A converter, on oscilloscope screen, show.The present invention utilizes the A/D converter in single-chip microcomputer to realize the mould/number conversion to oscillographic Y input measured signal, the result store of conversion is in the SRAM of single-chip microcomputer inside, when demonstration, recover the simulate signal of input through the D/A converter of single-chip microcomputer, the expanded circuit that single-chip microcomputer and interlock circuit form is connected between the Y input circuit and prime amplifier of general purpose oscialloscope perpendicular system.
Further, be long-time storage signal, also need to arrange data-carrier store.
Further, for expanding the scope of sampled signal bandwidth, also need to arrange high-speed a/d converter and D/A converter.
The invention has the beneficial effects as follows: the information of can real-time storage measuring, for single pulse signal non-periodic, carry out as required playback, also can single step or playback continuously, engineering staff is waveform, amplitude and the pulsewidth of observation signal intactly.
Brief description of the drawings
Fig. 1 is the universal architecture theory diagram of general purpose oscialloscope circuit;
Fig. 2 is the part theory diagram with oscillograph circuit that the present invention has memory function.
Embodiment
A kind of general purpose oscialloscope with memory function, comprise Y input circuit, Y pre-amplification circuit, delay line, rearmounted amplifying circuit, oscillatron, horizontal generator, time-base generator, triggering shaping circuit, low-pass filter circuit and single-chip microcomputer, measured signal is after the input of Y input circuit, be divided into two-way, one tunnel enters Y pre-amplification circuit, another road enters low-pass filter circuit, storage after A/D conversion, while carrying out signal playback, under Single-chip Controlling, the signal that enters Y pre-amplification circuit is the storage signal through D/A conversion.
The ultimate principle that embeds memory function in general purpose oscialloscope is, with A/D converter, simulate signal is converted to digital signal, then store in RAM, need to show time, the digital signal of the storage in RAM is read in order, recover simulate signal by D/A converter, on oscilloscope screen, show.The present invention utilizes the A/D converter in single-chip microcomputer to realize the mould/number conversion to oscillographic Y input measured signal, the result store of conversion is in the SRAM of single-chip microcomputer inside, when demonstration, recover the simulate signal of input through the D/A converter of single-chip microcomputer, the expanded circuit that single-chip microcomputer and interlock circuit form is connected between the Y input circuit and prime amplifier of general purpose oscialloscope perpendicular system.
Further, be long-time storage signal, also need to arrange data-carrier store.
Further, for expanding the scope of sampled signal bandwidth, also need to arrange high-speed a/d converter and D/A converter.
Claims (3)
1. one kind has the general purpose oscialloscope of memory function, comprise Y input circuit, Y pre-amplification circuit, delay line, rearmounted amplifying circuit, oscillatron, horizontal generator, time-base generator, trigger shaping circuit, it is characterized in that, also comprise low-pass filter circuit and single-chip microcomputer, measured signal is after the input of Y input circuit, be divided into two-way, one tunnel enters Y pre-amplification circuit, another road enters low-pass filter circuit, storage after A/D conversion, while carrying out signal playback, under Single-chip Controlling, the signal that enters Y pre-amplification circuit is the storage signal through D/A conversion.
2. the general purpose oscialloscope with memory function according to claim 1, is characterized in that: also comprise data-carrier store.
3. the general purpose oscialloscope with memory function according to claim 1, is characterized in that: also comprise high-speed a/d and D/A converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203996.6A CN103954818A (en) | 2014-05-15 | 2014-05-15 | Universal oscilloscope with storage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203996.6A CN103954818A (en) | 2014-05-15 | 2014-05-15 | Universal oscilloscope with storage function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103954818A true CN103954818A (en) | 2014-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410203996.6A Pending CN103954818A (en) | 2014-05-15 | 2014-05-15 | Universal oscilloscope with storage function |
Country Status (1)
| Country | Link |
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| CN (1) | CN103954818A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677865A (en) * | 2016-08-02 | 2018-02-09 | 湖南百里目科技有限责任公司 | A kind of digital storage oscilloscope |
| CN110108916A (en) * | 2019-05-27 | 2019-08-09 | 西安交通大学 | A kind of synchronous triggering device and triggering method with multi-stage digital delay function |
-
2014
- 2014-05-15 CN CN201410203996.6A patent/CN103954818A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677865A (en) * | 2016-08-02 | 2018-02-09 | 湖南百里目科技有限责任公司 | A kind of digital storage oscilloscope |
| CN110108916A (en) * | 2019-05-27 | 2019-08-09 | 西安交通大学 | A kind of synchronous triggering device and triggering method with multi-stage digital delay function |
| CN110108916B (en) * | 2019-05-27 | 2021-03-16 | 西安交通大学 | Synchronous trigger device with multistage digital delay function and trigger method |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140730 |
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| WD01 | Invention patent application deemed withdrawn after publication |