CN203325292U - An analog circuit and digital signal processing experiment platform used for experiments in institutions of higher learning - Google Patents
An analog circuit and digital signal processing experiment platform used for experiments in institutions of higher learning Download PDFInfo
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- CN203325292U CN203325292U CN201320260772XU CN201320260772U CN203325292U CN 203325292 U CN203325292 U CN 203325292U CN 201320260772X U CN201320260772X U CN 201320260772XU CN 201320260772 U CN201320260772 U CN 201320260772U CN 203325292 U CN203325292 U CN 203325292U
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Abstract
The utility model relates to electronic experiment instruments of institutions of higher learning, and provides an analog circuit and digital signal processing experiment platform used for experiments in institutions of higher learning. The platform comprises a base and a plurality of independent experiment modules which are divided in a modularized manner according to analog circuit experiments and digital signal processing experiments of the institutions of higher learning and plugged on the base in a respectively detachable mode. The base is provided with a signal input module used for receiving control information inputted by an experimenter, a signal output module used for outputting experiment information, a D/A conversion module used for conducting digital-analog signal conversion, an A/D conversion module used for conducting analog-digital signal conversion, and an MCU control module used for outputting test signals to the experiment modules, and acquiring or analyzing and processing feedback signals of the experiment modules. The analog circuit and digital signal processing experiment platform used for the experiments in the institutions of higher learning, provided by the utility model, is advantaged by being simple to connect and operate and small in size.
Description
Technical field
The utility model relates to institution of higher learning's electronic experiment instrument, is specifically related to mimic channel and the Digital Signal Processing Experiment platform of a kind of institution of higher learning experiment use.
Background technology
The analogous circuit experiment case of the use of institution of higher learning's experiment is at present concentrated the various components and parts of a plurality of experiment use design, is arranged in an experimental box, causes casing huge; And this experimental box need to connect the instruments such as signal generator, oscillograph, operation and line are loaded down with trivial details, cause in the connection, debugging of the instrument of time and efforts before experiment of experimenter's overspending, have wasted the time of testing.
The utility model content
The purpose of this utility model is to provide mimic channel and the Digital Signal Processing Experiment platform of a kind of institution of higher learning experiment use, is intended to solve that the casing that the analogous circuit experiment case of institution of higher learning's experiment use of prior art exists is huge, operation and the loaded down with trivial details problem of line.
For this reason, the utility model is by the following technical solutions:
Mimic channel and the Digital Signal Processing Experiment platform of a kind of institution of higher learning experiment use, comprise: a base station, and a plurality of analogous circuit experiment according to institution of higher learning and Digital Signal Processing Experiment carry out modular division, can dismantle respectively be plugged in the independently experiment module on described base station;
Described base station is provided with the signal input module that receives experimenter's input control information, the signal output module of output experiment information, carry out the D/A modular converter of digital and analogue signals conversion, carry out the A/D modular converter of modulus signal conversion, the output test signal is to the MCU control module of described experiment module and collection or the described experiment module feedback signal of analyzing and processing;
The input end of the output terminal of the described signal input module of control information input termination of described MCU control module, the input end of the described signal output module of experiment information output termination, the described D/A modular converter of test signal output termination, the output terminal of the described A/D modular converter of feedback signal input termination;
The input end of the output terminal of the described D/A modular converter of input termination of described experiment module, the described A/D modular converter of output termination.
Mimic channel and the Digital Signal Processing Experiment platform of institution of higher learning's experiment use that the utility model provides, while being tested, be plugged in corresponding experiment module on described base station and can be tested, and therefore has advantages of connection, simple to operate; In addition, described base station is provided with the signal output module of output experiment information, carry out the D/A modular converter of digital and analogue signals conversion, carry out the A/D modular converter of modulus signal conversion, the output test signal is to the MCU control module of described experiment module and collection or the described experiment module feedback signal of analyzing and processing, therefore can save the external instruments such as signal generator, oscillograph, further facilitate connection, the operation of this experiment porch, this experiment porch also has advantages of that volume is little simultaneously.
The accompanying drawing explanation
Fig. 1 tests the mimic channel of use and the perspective view of Digital Signal Processing Experiment platform for the institution of higher learning that the utility model embodiment provides;
Fig. 2 tests the mimic channel of use and the schematic block circuit diagram of Digital Signal Processing Experiment platform for the institution of higher learning that the utility model embodiment provides.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.
With reference to Fig. 1, Fig. 2.
Mimic channel and the Digital Signal Processing Experiment platform of a kind of institution of higher learning experiment use, comprise: a base station 1, and a plurality of analogous circuit experiment according to institution of higher learning and Digital Signal Processing Experiment carry out modular division, can dismantle respectively be plugged in the independently experiment module 2 on described base station 1; Described base station 1 is provided with the signal input module 11 that receives experimenter's input control information, the signal output module 12 of output experiment information, carry out the D/A modular converter 13 of digital and analogue signals conversion, carry out the A/D modular converter 14 of modulus signal conversion, the output test signal is to the MCU control module 15 of described experiment module 2 and collection or described experiment module 2 feedback signals of analyzing and processing; The input end of the output terminal of the described signal input module 11 of control information input termination of described MCU control module 15, the input end of the described signal output module 12 of experiment information output termination, the described D/A modular converter 13 of test signal output termination, the output terminal of the described A/D modular converter 14 of feedback signal input termination; The input end of the output terminal of the described D/A modular converter 13 of input termination of described experiment module 2, the described A/D modular converter 14 of output termination.
In the utility model embodiment, described experiment module 2 comprises analogous circuit experiment module and Digital Signal Processing Experiment module.
Described analogous circuit experiment module comprises transistor grounded base amplification circuit module, cascode level amplifying circuit module, cascode level amplifying circuit module, the composite amplifier module, metal-oxide-semiconductor common source amplifying circuit module, leak altogether the amplifying circuit module, the active low-pass filter module, the active high-pass filter module, the active band-pass filter module, the differential amplifier circuit module, the current source circuit module, the integrated operational amplifier circuit module, the instrument amplifier module, the scale operation circuit module, integrating circuit module and Waveform generating circuit module.
Described Digital Signal Processing Experiment module comprises the windowing module of interpolation, abstraction module and the signal of FFT (fast fourier transform) analytic signal frequency spectrum module, FIR (limit for length's shock response is arranged) filter module, IIR (infinite impact response) filter module, signal.
In the utility model embodiment, described MCU control module 15 comprises single-chip microcomputer, and the model of described single-chip microcomputer is STM32F405.
In the utility model embodiment, described signal input module 11 is key circuit.Described signal output module 12 is LCD display.In other embodiments, signal input module 11 and signal output module 12 can be for gathering the touch-screen of these both functions.
Below the mimic channel of institution of higher learning experiments use that the utility model embodiment is provided and the use-pattern of Digital Signal Processing Experiment platform be described further.
When needs are done analogous circuit experiment, corresponding experiment module 2 is plugged on base station 1; The experimenter, by signal input module 11 input control informations, controls the required test signal of MCU control module 15 output experiment; Because the signal from 15 outputs of MCU control module is digital signal, therefore need to carry out digital-to-analog conversion by 13 pairs of these test signals of D/A modular converter; Test signal after conversion transfers to experiment module 2, afterwards experiment module 2 output feedback signals; Because MCU control module 15 can only receive, processing digital signal, and the signal of experiment module 2 outputs is simulating signal, therefore need to carry out analog to digital conversion by 14 pairs of these feedback signals of A/D modular converter; Feedback signal after conversion transfers to MCU control module 15, and 15 pairs of these feedback signals of MCU control module are gathered, and afterwards collection result is passed through to signal output module 12 output displays.
At present the Digital Signal Processing Experiment in institution of higher learning is too much is partial to the PC at PC() on carry out analogue simulation, and lack the experiment under true application scenarios.And the mimic channel of the institution of higher learning that the utility model embodiment provides experiment use and Digital Signal Processing Experiment platform can also carry out Digital Signal Processing Experiment except carrying out analogous circuit experiment.
When needs are done Digital Signal Processing Experiment, before experiment, the experimenter need be according to the corresponding digital signal processing algorithm of concrete experimental design, and MCU control module 15 is carried out to corresponding programming.During experiment, corresponding experiment module 2 is plugged on base station 1; The experimenter, by signal input module 11 input control informations, controls the required test signal of MCU control module 15 output experiment; Because the signal from 15 outputs of MCU control module is digital signal, therefore need to carry out digital-to-analog conversion by 13 pairs of these test signals of D/A modular converter; Test signal after conversion transfers to experiment module 2, afterwards experiment module 2 output feedback signals; Because MCU control module 15 can only receive, processing digital signal, and the signal of experiment module 2 outputs is simulating signal, therefore need to carry out analog to digital conversion by 14 pairs of these feedback signals of A/D modular converter; Feedback signal after conversion transfers to MCU control module 15, and 15 pairs of these feedback signals of MCU control module are gathered and carry out analyzing and processing by respective algorithms, afterwards result is passed through to signal output module 12 output displays.
Above, the place of the difference of analogous circuit experiment and Digital Signal Processing Experiment is mainly: for analogous circuit experiment, 15 feedback signals to experiment module 2 of MCU control module are collected, afterwards by signal output module 12 output displays; And for Digital Signal Processing Experiment, before experiment, the experimenter need be according to the corresponding digital signal processing algorithm of concrete experimental design, and MCU control module 15 is carried out to corresponding programming, and after the feedback signal of 15 pairs of experiment modules 2 of MCU control module collected, also need to carry out analyzing and processing by corresponding algorithm, again result is passed through to signal output module 12 output displays afterwards.
In sum, mimic channel and the Digital Signal Processing Experiment platform of institution of higher learning's experiment use that the utility model provides, while being tested, corresponding experiment module 2 is plugged on described base station 1 and can be tested, therefore there is connection, simple to operate; In addition, described base station 1 is provided with the signal output module 12 of output experiment information, carry out the D/A modular converter 13 of digital and analogue signals conversion, carry out the A/D modular converter 14 of modulus signal conversion, the output test signal is to the MCU control module 15 of described experiment module and collection or described experiment module 2 feedback signals of analyzing and processing, therefore can save the external instruments such as signal generator, oscillograph, further facilitate connection, the operation of this experiment porch, this experiment porch also has advantages of that volume is little simultaneously.
And the experimenter can be programmed to this MCU control module 15, carry out analyzing and processing by 15 pairs of signals of this MCU control module, so mimic channel and the Digital Signal Processing Experiment platform of this institution of higher learning's experiment use can be used for Digital Signal Processing Experiment.
Be more than the utility model preferred embodiment, be not limited to the utility model, all any modifications of doing within the utility model principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. mimic channel and the Digital Signal Processing Experiment platform of institution of higher learning experiment use, it is characterized in that, comprise: a base station (1), and a plurality of analogous circuit experiment according to institution of higher learning and Digital Signal Processing Experiment carry out modular division, can dismantle respectively be plugged in the independently experiment module (2) on described base station (1);
Described base station (1) is provided with the signal input module (11) that receives experimenter's input control information, the signal output module (12) of output experiment information, carry out the D/A modular converter (13) of digital and analogue signals conversion, carry out the A/D modular converter (14) of modulus signal conversion, the output test signal is to the MCU control module (15) of described experiment module (2) and collection or the described experiment module of analyzing and processing (2) feedback signal;
The input end of the output terminal of the control information input described signal input module of termination (11) of described MCU control module (15), the input end of the experiment information output described signal output module of termination (12), the test signal output described D/A modular converter of termination (13), the output terminal of the feedback signal input described A/D modular converter of termination (14);
The input end of the output terminal of the described D/A modular converter of the input termination of described experiment module (2) (13), the output described A/D modular converter of termination (14).
2. mimic channel and the Digital Signal Processing Experiment platform of institution of higher learning as claimed in claim 1 experiment use, is characterized in that, described experiment module (2) comprises analogous circuit experiment module and Digital Signal Processing Experiment module.
3. mimic channel and the Digital Signal Processing Experiment platform of use tested by institution of higher learning as claimed in claim 2, it is characterized in that, described analogous circuit experiment module comprises transistor grounded base amplification circuit module, cascode level amplifying circuit module, cascode level amplifying circuit module, the composite amplifier module, metal-oxide-semiconductor common source amplifying circuit module, leak altogether the amplifying circuit module, the active low-pass filter module, the active high-pass filter module, the active band-pass filter module, the differential amplifier circuit module, the current source circuit module, the integrated operational amplifier circuit module, the instrument amplifier module, the scale operation circuit module, integrating circuit module and Waveform generating circuit module.
4. mimic channel and the Digital Signal Processing Experiment platform of use tested by institution of higher learning as claimed in claim 2, it is characterized in that, described Digital Signal Processing Experiment module comprises the windowing module of interpolation, abstraction module and the signal of fft analysis signal spectrum module, FIR filter module, iir filter module, signal.
5. mimic channel and the Digital Signal Processing Experiment platform of institution of higher learning as claimed in claim 1 experiment use, is characterized in that, described MCU control module (15) comprises single-chip microcomputer, and the model of described single-chip microcomputer is STM32F405.
6. mimic channel and the Digital Signal Processing Experiment platform of institution of higher learning as claimed in claim 1 experiment use, is characterized in that, described signal input module (11) is key circuit.
7. mimic channel and the Digital Signal Processing Experiment platform of institution of higher learning as claimed in claim 1 experiment use, is characterized in that, described signal output module (12) is LCD display.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077945A (en) * | 2014-07-11 | 2014-10-01 | 上海工程技术大学 | Digital circuit and analog circuit switching experiment facility based on definability |
| CN105261265A (en) * | 2015-07-20 | 2016-01-20 | 沈阳理工大学 | Experiment teaching system of electronic countermeasures technology |
-
2013
- 2013-05-14 CN CN201320260772XU patent/CN203325292U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077945A (en) * | 2014-07-11 | 2014-10-01 | 上海工程技术大学 | Digital circuit and analog circuit switching experiment facility based on definability |
| CN105261265A (en) * | 2015-07-20 | 2016-01-20 | 沈阳理工大学 | Experiment teaching system of electronic countermeasures technology |
| CN105261265B (en) * | 2015-07-20 | 2017-10-10 | 沈阳理工大学 | A kind of ECM experiment teaching system |
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Granted publication date: 20131204 Termination date: 20140514 |