CN104391146A - Oscilloscope based on layered amplifying circuit - Google Patents
Oscilloscope based on layered amplifying circuit Download PDFInfo
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- CN104391146A CN104391146A CN201410679520.XA CN201410679520A CN104391146A CN 104391146 A CN104391146 A CN 104391146A CN 201410679520 A CN201410679520 A CN 201410679520A CN 104391146 A CN104391146 A CN 104391146A
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Abstract
The invention discloses an oscilloscope based on a layered amplifying circuit. The oscilloscope based on the layered amplifying circuit comprises an attenuator, a voltage follower, an amplifier, an AD sampling circuit, a controller, a trigger circuit, a clock module, a data buffer and a display, the attenuator, the voltage follower, the amplifier, the AD sampling circuit, the data buffer and the display are connected orderly, the AD sampling circuit is connected to the clock module and the trigger circuit respectively; the trigger circuit is connected to the data buffer and the controller respectively; the attenuator and the amplifier are mounted at the signal receiving front end for front-end treatment on the inlet signal for reducing the interference signal, keeping signal to noise ratio of the signal, raising the accuracy of the signal, the use operation is more convenient for the touch function of the display for raising the operation efficiency, the internal setting is more human, the design is novel to be popularized.
Description
Technical field
The invention discloses a kind of oscillograph based on layering amplifying circuit, belong to signal handling equipment technical field.
Background technology
Oscillograph is a kind of purposes electronic measuring instrument very widely.It can become invisible converting electrical signal observable image, is convenient to the change procedure that people study various electrical phenomena.Oscillograph utilize narrow, by the molecular electron beam of High-speed Electric, beat on the panel scribbling fluorescent material, just can produce tiny luminous point, this is the principle of work of traditional analog oscilloscope.Under the effect of measured signal, electron beam just looks like the nib of one-pen, can depict the change curve of the instantaneous value of measured signal on panel.Utilize oscillograph can observe the time dependent squiggle of various unlike signal amplitudes, various different electricity can also be tested, as voltage, electric current, frequency, phase differential, AM depth etc. with it.
Oscillograph is the characteristic utilizing electronics oscillatron, converts the alternate electrical signal that human eye cannot directly be observed to image, is presented on video screen so that the electronic measuring instrument measured.It observes problem, the requisite important instrument of experiments of measuring result in digital circuit experiment phenomenon, analysis design mothod.
Along with the development of electronic technology, the progress of signal processing technology, existing equipment and testing tool more and more higher to oscillographic requirement, how to improve oscillographic signal transacting precision and accuracy, become the problem needing most solution at present.
The patent No. is 201210577495.5, and patent name is a kind of oscillograph, and this patent proposes the problem of solution for problem in prior art, but this patent just describes the means realizing oscillograph existing capability, does not propose the mode improved.
The patent No. is 201210509747.0, patent name is a kind of oscillograph, and this patent indicates prior art oscillograph Problems existing, and this patent also just proposes the problem solved from shell, do not provide the mode of how to deal with problems from inside, solve DeGrain.
Meanwhile, the place required further improvement in addition on the concrete structure of amplifier circuit in prior art, to realize reducing circuit power consumption, improves the effect of amplification effect.
Summary of the invention
Technical matters to be solved by this invention is: for the defect of prior art, provides a kind of oscillograph based on layering amplifying circuit, adds attenuator and amplifier in Signal reception front end, carry out front-end processing to the signal entered, and reduces entering of undesired signal.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
Based on an oscillograph for layering amplifying circuit, comprise attenuator, voltage follower, amplifier, AD sample circuit, controller, trigger circuit, clock module, data buffer, display;
Wherein attenuator, voltage follower, amplifier, AD sample circuit, data buffer, display are connected successively, and AD sample circuit is also connected with clock module, trigger circuit respectively; Described trigger circuit are connected with data buffer, controller respectively;
Input signal enters attenuator, via attenuator, the amplitude of signal and gain are decayed, signal after decay enters amplifier and carries out signal gain amplification after entering voltage follower, signal after amplifying enters AD sample circuit, AD sample circuit is sampled to signal, signal after sampling stored in data buffer, and is shown by display;
Described clock module provides sampling clock for AD sample circuit, and controller control triggering electric circuit starts AD sample circuit and data buffer;
Described display is touch-screen, is provided with operation interface in controller, is shown by display screen, for operation.
The particular circuit configurations of described amplifier comprises the first to the tenth electric capacity, first to the 16 resistance, first to fourth amplifier, the wherein base stage of input end respectively with the first triode after the first electric capacity of amplifier physical circuit, one end of second resistance is connected, one end of the other end respectively with the first resistance of the second resistance, one end of 6th resistance, one end of 6th electric capacity is connected, the collector of the other end respectively with the second triode after the 3rd electric capacity of the 6th resistance, the emitter of the 4th triode is connected, the other end of the first resistance is connected with the base stage of the second triode through the 8th electric capacity, one end of the other end respectively with the second electric capacity after the 8th resistance of the 6th electric capacity, one end of 4th resistance is connected, the other end of the second electric capacity is connected with the emitter of the first triode, one end of collector the respectively with five electric capacity of the first triode, one end of 3rd resistance is connected, the other end of the other end the respectively with three resistance after the 4th electric capacity of the 4th resistance, one end of 5th resistance, one end of 7th resistance, one end of 9th resistance is connected, the other end of the other end the respectively with five resistance of the 5th electric capacity, one end of 7th electric capacity is connected, the other end of the other end the respectively with seven resistance of the 7th electric capacity, the base stage of the 3rd triode is connected, the emitter of emitter the respectively with three triode after the 9th electric capacity of the second triode, one end of tenth resistance is connected, the other end of the tenth resistance is connected with the base stage of the 4th triode, the collector of collector the respectively with three triode after the tenth electric capacity of the 4th triode, the other end of the 9th resistance is connected.
As further prioritization scheme of the present invention, the chip model that described attenuator adopts is HMC274.
As further prioritization scheme of the present invention, the chip model of described voltage follower is LM358.
As further prioritization scheme of the present invention, described controller adopts single-chip microcomputer, and the model of described single-chip microcomputer is STC90C51.
As further prioritization scheme of the present invention, the chip that described clock module adopts is DS1302.
As further prioritization scheme of the present invention, also comprise keyboard, described keyboard is connected with controller.
As further prioritization scheme of the present invention, also comprise wave filter, described wave filter is arranged between voltage follower and amplifier, enters amplifier and amplify after the filtering of the signal device after filtering exported via voltage follower.
The present invention adopts above technical scheme compared with prior art, there is following technique effect: the present invention adds attenuator and amplifier in Signal reception front end, front-end processing is carried out to the signal entered, reduces entering of undesired signal, the signal to noise ratio (S/N ratio) of holding signal, improve the degree of accuracy of signal, operation when display is more convenient to use with touch function simultaneously, improve operating efficiency, inside arranges hommization more, modern design, is worthy to be popularized.Meanwhile, the present invention adopts the design of layering amplifying circuit, improves the output power of amplifier, reduces the concrete power consumption of circuit.
Accompanying drawing explanation
Fig. 1 is circuit module connection diagram of the present invention.
Fig. 2 is amplifier circuit schematic diagram of the present invention,
Wherein: R1 to R10 is respectively the first to the tenth resistance, C1 to C10 is respectively the first to the tenth electric capacity, and D1 to D4 is respectively first to fourth triode.
Embodiment
Be described below in detail embodiments of the present invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Those skilled in the art of the present technique are understandable that, the correlation module related in the present invention and the function of realization thereof are the devices of hardware after improvement and formation thereof, device or system carry computer software programs conventional in prior art or pertinent protocols just can realize, and are not improve computer software programs of the prior art or pertinent protocols.Such as, the computer hardware system after improvement still can realize the specific function of this hardware system by loading existing operation system of software.Therefore, be understandable that, innovation of the present invention is the improvement of hardware module in prior art and connects syntagmatic, but not be only in hardware module for realizing the improvement of software or the agreement of carrying about function.
Those skilled in the art of the present technique are understandable that, the correlation module mentioned in the present invention is the one or more hardware device for performing in step in operation, method, flow process described in the application, measure, scheme.Described hardware device for required object and specialized designs and manufacture, or also can adopt the known device in multi-purpose computer or other known hardware devices.Described multi-purpose computer activates or reconstructs with having storage procedure Selection within it.
Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in instructions of the present invention " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.Should be appreciated that, when we claim element to be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or also can there is intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or couple.Wording "and/or" used herein comprises one or more arbitrary unit listing item be associated and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, a kind of oscillograph based on layering amplifying circuit, comprises attenuator, voltage follower, amplifier, AD sample circuit, controller, trigger circuit, clock module, data buffer, display to circuit module connection diagram of the present invention;
Wherein attenuator, voltage follower, amplifier, AD sample circuit, data buffer, display are connected successively, and AD sample circuit is also connected with clock module, trigger circuit respectively; Described trigger is connected with data buffer, controller respectively;
Input signal enters attenuator, via attenuator, the amplitude of signal and gain are decayed, signal after decay enters amplifier and carries out signal gain amplification after entering voltage follower, signal after amplifying enters AD sample circuit, AD sample circuit is sampled to signal, signal after sampling stored in data buffer, and is shown by display;
Described clock module provides sampling clock for AD sample circuit, and controller control triggering electric circuit starts AD sample circuit and data buffer;
Described display is touch-screen, is provided with operation interface in controller, is shown by display screen, for operation.
Also can wave filter be set between described voltage follower and amplifier, filtering is carried out to signal, the interference of filtering clutter, also simultaneously or wave filter can be set separately after amplifier simultaneously, be mixed into noise signal in signal after amplification, it is more accurate that the filter range of wave filter will be arranged.
Amplifier circuit schematic diagram of the present invention as shown in Figure 2, the particular circuit configurations of described amplifier comprises the first to the tenth electric capacity, first to the 16 resistance, first to fourth amplifier, the wherein base stage of input end respectively with the first triode after the first electric capacity of amplifier physical circuit, one end of second resistance is connected, one end of the other end respectively with the first resistance of the second resistance, one end of 6th resistance, one end of 6th electric capacity is connected, the collector of the other end respectively with the second triode after the 3rd electric capacity of the 6th resistance, the emitter of the 4th triode is connected, the other end of the first resistance is connected with the base stage of the second triode through the 8th electric capacity, one end of the other end respectively with the second electric capacity after the 8th resistance of the 6th electric capacity, one end of 4th resistance is connected, the other end of the second electric capacity is connected with the emitter of the first triode, one end of collector the respectively with five electric capacity of the first triode, one end of 3rd resistance is connected, the other end of the other end the respectively with three resistance after the 4th electric capacity of the 4th resistance, one end of 5th resistance, one end of 7th resistance, one end of 9th resistance is connected, the other end of the other end the respectively with five resistance of the 5th electric capacity, one end of 7th electric capacity is connected, the other end of the other end the respectively with seven resistance of the 7th electric capacity, the base stage of the 3rd triode is connected, the emitter of emitter the respectively with three triode after the 9th electric capacity of the second triode, one end of tenth resistance is connected, the other end of the tenth resistance is connected with the base stage of the 4th triode, the collector of collector the respectively with three triode after the tenth electric capacity of the 4th triode, the other end of the 9th resistance is connected.
As further prioritization scheme of the present invention, the chip model that described attenuator adopts is HMC274, also can adopt the attenuator that resistance is set up, and concrete which kind of mode that adopts can be selected according to the size of circuit board or the requirement realizing precision.
As further prioritization scheme of the present invention, the chip model of described voltage follower is LM358, voltage follower, as the term suggests, be realize the electron-like element that output voltage follows the change of input voltage.That is, the voltage amplification factor perseverance of voltage follower is less than and close to 1.The distinguishing feature of voltage follower is exactly that input impedance is high, and output impedance is low, improves the load capacity of rear end, improves the carrying capacity of circuit.
As further prioritization scheme of the present invention, described controller adopts single-chip microcomputer, and the model of described single-chip microcomputer is STC90C51.
As further prioritization scheme of the present invention, the chip that described clock module adopts is DS1302, and this chip can directly be connected with single-chip microcomputer, realizes clock, avoids the problem arranging separately clock in single-chip microcomputer inside in the past, goes wrong and be convenient to search.
As further prioritization scheme of the present invention, also comprise keyboard, described keyboard is connected with controller, display in the present invention has contact action function, adds both cooperatings after keyboard, convenient during use, improve operating efficiency, when a side goes wrong, have alternatives.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from present inventive concept.The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to technical spirit of the present invention, within the spirit and principles in the present invention, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection domain all still belonging to technical solution of the present invention.
Claims (7)
1. based on an oscillograph for layering amplifying circuit, it is characterized in that: comprise attenuator, voltage follower, amplifier, AD sample circuit, controller, trigger circuit, clock module, data buffer, display;
Wherein attenuator, voltage follower, amplifier, AD sample circuit, data buffer, display are connected successively, and AD sample circuit is also connected with clock module, trigger circuit respectively; Described trigger circuit are connected with data buffer, controller respectively;
Input signal enters attenuator, via attenuator, the amplitude of signal and gain are decayed, signal after decay enters amplifier and carries out signal gain amplification after entering voltage follower, signal after amplifying enters AD sample circuit, AD sample circuit is sampled to signal, signal after sampling stored in data buffer, and is shown by display;
Described clock module provides sampling clock for AD sample circuit, and controller control triggering electric circuit starts AD sample circuit and data buffer;
Described display is touch-screen, is provided with operation interface in controller, is shown by display screen, for operation;
The particular circuit configurations of described amplifier comprises the first to the tenth electric capacity, first to the tenth resistance, first to fourth amplifier, the wherein base stage of input end respectively with the first triode after the first electric capacity of amplifier physical circuit, one end of second resistance is connected, one end of the other end respectively with the first resistance of the second resistance, one end of 6th resistance, one end of 6th electric capacity is connected, the collector of the other end respectively with the second triode after the 3rd electric capacity of the 6th resistance, the emitter of the 4th triode is connected, the other end of the first resistance is connected with the base stage of the second triode through the 8th electric capacity, one end of the other end respectively with the second electric capacity after the 8th resistance of the 6th electric capacity, one end of 4th resistance is connected, the other end of the second electric capacity is connected with the emitter of the first triode, one end of collector the respectively with five electric capacity of the first triode, one end of 3rd resistance is connected, the other end of the other end the respectively with three resistance after the 4th electric capacity of the 4th resistance, one end of 5th resistance, one end of 7th resistance, one end of 9th resistance is connected, the other end of the other end the respectively with five resistance of the 5th electric capacity, one end of 7th electric capacity is connected, the other end of the other end the respectively with seven resistance of the 7th electric capacity, the base stage of the 3rd triode is connected, the emitter of emitter the respectively with three triode after the 9th electric capacity of the second triode, one end of tenth resistance is connected, the other end of the tenth resistance is connected with the base stage of the 4th triode, the collector of collector the respectively with three triode after the tenth electric capacity of the 4th triode, the other end of the 9th resistance is connected.
2. a kind of oscillograph based on layering amplifying circuit as claimed in claim 1, is characterized in that: the chip model that described attenuator adopts is HMC274.
3. a kind of oscillograph based on layering amplifying circuit as claimed in claim 1, is characterized in that: the chip model of described voltage follower is LM358.
4. a kind of oscillograph based on layering amplifying circuit as claimed in claim 3, is characterized in that: described controller adopts single-chip microcomputer, and the model of described single-chip microcomputer is STC90C51.
5. a kind of oscillograph based on layering amplifying circuit as claimed in claim 1, is characterized in that: the chip that described clock module adopts is DS1302.
6. a kind of oscillograph based on layering amplifying circuit as claimed in claim 1, it is characterized in that: also comprise keyboard, described keyboard is connected with controller.
7. a kind of oscillograph based on layering amplifying circuit as claimed in claim 1, it is characterized in that: also comprise wave filter, described wave filter is arranged between voltage follower and amplifier, enters amplifier and amplify after the filtering of the signal device after filtering exported via voltage follower.
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| CN201410679520.XA CN104391146A (en) | 2014-11-25 | 2014-11-25 | Oscilloscope based on layered amplifying circuit |
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| CN201410679520.XA CN104391146A (en) | 2014-11-25 | 2014-11-25 | Oscilloscope based on layered amplifying circuit |
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| CN104391146A true CN104391146A (en) | 2015-03-04 |
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| JPH08162859A (en) * | 1994-11-29 | 1996-06-21 | Hitachi Ltd | Multi-stage amplifier |
| JPH11125663A (en) * | 1997-10-22 | 1999-05-11 | Ando Electric Co Ltd | Circuit for processing signal of electrooptic probe |
| CN201110865Y (en) * | 2007-08-14 | 2008-09-03 | 王悦 | Digital storage oscillograph |
| CN101666819A (en) * | 2009-07-21 | 2010-03-10 | 秦轲 | Digital oscilloscope signal equivalent sampling method |
| US20110038451A1 (en) * | 2009-08-14 | 2011-02-17 | Taiwan Semiconductor Manufacturing Company, Ltd. | Ultra high resolution timing measurement |
| CN201811988U (en) * | 2010-09-06 | 2011-04-27 | 河南友利华系统工程有限公司 | Moldboard trigger digital oscilloscope |
| CN103257259A (en) * | 2012-02-15 | 2013-08-21 | 安捷伦科技有限公司 | Digital oscilloscope comprising multiple data acquisition pathways |
| CN203772910U (en) * | 2014-04-08 | 2014-08-13 | 福建利利普光电科技有限公司 | Oscilloscope with constant temperature change amplitude |
-
2014
- 2014-11-25 CN CN201410679520.XA patent/CN104391146A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0031716B1 (en) * | 1979-12-28 | 1985-09-11 | Federal Products Corporation | Measuring instrument provided with analog and digital display |
| JPH08162859A (en) * | 1994-11-29 | 1996-06-21 | Hitachi Ltd | Multi-stage amplifier |
| JPH11125663A (en) * | 1997-10-22 | 1999-05-11 | Ando Electric Co Ltd | Circuit for processing signal of electrooptic probe |
| CN201110865Y (en) * | 2007-08-14 | 2008-09-03 | 王悦 | Digital storage oscillograph |
| CN101666819A (en) * | 2009-07-21 | 2010-03-10 | 秦轲 | Digital oscilloscope signal equivalent sampling method |
| US20110038451A1 (en) * | 2009-08-14 | 2011-02-17 | Taiwan Semiconductor Manufacturing Company, Ltd. | Ultra high resolution timing measurement |
| CN201811988U (en) * | 2010-09-06 | 2011-04-27 | 河南友利华系统工程有限公司 | Moldboard trigger digital oscilloscope |
| CN103257259A (en) * | 2012-02-15 | 2013-08-21 | 安捷伦科技有限公司 | Digital oscilloscope comprising multiple data acquisition pathways |
| CN203772910U (en) * | 2014-04-08 | 2014-08-13 | 福建利利普光电科技有限公司 | Oscilloscope with constant temperature change amplitude |
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