CN107038941A - A kind of portable electronic Platform of Experimental Teaching - Google Patents
A kind of portable electronic Platform of Experimental Teaching Download PDFInfo
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- CN107038941A CN107038941A CN201710457352.3A CN201710457352A CN107038941A CN 107038941 A CN107038941 A CN 107038941A CN 201710457352 A CN201710457352 A CN 201710457352A CN 107038941 A CN107038941 A CN 107038941A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits
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Abstract
A kind of portable electronic Platform of Experimental Teaching, is related to Platform of Experimental Teaching, in order to solve that existing Electronic Experiment Teaching platform device is valuable, do not have portability, the inconvenient data to collection are stored and the problem of after-treatment.The platform includes power supply, data processing and control module, Digital I/O, universal meter chip, wireless module, USB interface, multiple digital analog converters, multiple filtering and operational amplification circuit, multiple analog-digital converters, multiple seizure circuits and customized module.The present invention is applied to experimental teaching.
Description
Technical field
The present invention relates to Platform of Experimental Teaching.
Background technology
In the experiment of the electronic simulation courses such as Experiment of Electrical Circuits, Signals ＆ Systems experiment, digital circuit experiment, analogous circuit experiment
In, it is necessary to use signal generator and sampling and analysis of signal equipment (such as oscillograph, frequency spectrograph, Network Analyzer etc.), also
The measuring apparatus such as universal meter can be used.
These equipment prices are not cheap, and student can not individually buy, and school everyone can not be equipped with one and be arranged to student
Standby, each experimental bench outfit often in laboratory is a set of and all heavier, therefore electronic experiment table the above is set
It is standby all to occupy a big chunk space, do not have portability；
Existing experiment is all to be scheduled regular time to allow student to be tested in laboratory, and is also to consolidate during laboratory
Fixed, therefore student can not arrange the time of oneself to be tested, also lack the time expands to experiment, very not side
Just；
When the equipment for needing to use laboratory in student carries out innovation undertaking project or match, it is necessary to choice experiment room
Non- experimental period could use experimental facilities, be unfavorable for the progress of the study of student, the progress of innovation undertaking project or match；
The time of Laboratory Opening is required for teacher to be kept an eye on, it is necessary to consume certain human resources, if student
This part human resources can be saved using equipment autonomously experiment；
The equipment such as these existing oscillographs, signal generator, frequency spectrograph, universal meter, Network Analyzer are all single
Equipment, and not supporting of having is connected the data that transmission is collected with computer or mobile phone, or if each equipment will be carried out
Connection needs many data transmission cables to complete, and is inconvenient to carry out the work of data storage, it has not been convenient to which data are carried out
After-treatment.
The content of the invention
The invention aims to solving that existing Electronic Experiment Teaching platform device is valuable, do not have portability, not side
Just the data to collection are stored and the problem of after-treatment, so as to provide a kind of portable electronic Platform of Experimental Teaching.
A kind of portable electronic Platform of Experimental Teaching of the present invention, including power supply, data processing and control module, number
Word IO, universal meter chip, wireless module, USB interface, multiple digital analog converters, multiple filtering and operational amplification circuit, Duo Gemo
Number converter, multiple seizure circuits and customized module；
Power supply includes voltage of direct-flow voltage regulation source and electric current source chip；
Multiple digital analog converters and multiple filtering and operational amplification circuit are corresponded, and multiple analog-digital converters and multiple are caught
Catch circuit one-to-one corresponding；
The control signal input connection at the output control signal end and digital analog converter of data processing and control module, number
The analog signal output of weighted-voltage D/A converter is connected with the input end of analog signal of filtering and operational amplification circuit；
Outside is that power supply and data processing and control module are powered by USB interface, and external equipment passes through USB interface or nothing
Wire module communicates with data processing and control module, universal meter control signal end and the general-purpose watch core of data processing and control module
The control signal input connection of piece, universal meter data output end and data processing and the general-purpose of control module of universal meter chip
Table data input pin is connected, the seizure control of the seizure control signal output and analog-digital converter of data processing and control module
Signal input part is connected, and is caught circuit collection input signal, is caught the collection signal output part of circuit and adopting for analog-digital converter
Collect signal input part to be connected, the digital signal output end of analog-digital converter is inputted with the data signal of data processing and control module
End is connected；
Customized module includes display module and input module；
The display signal output part of data processing and control module is inputted by the display signal of Digital I/O and display module
End is connected, and input module is used to input control signal, and the control signal output of input module passes through Digital I/O and data processing
And the control signal input of control module is connected.
Display module and input module are realized using touch display screen module.
Preferably, wireless module is realized using Wi-Fi module, bluetooth module or wireless data transmission module.
Preferably, data processing and control module are realized using single-chip microcomputer, ARM microprocessor, DSP or FPGA.
Preferably, the port number of digital analog converter is 1-4 roads, and the port number of analog-digital converter is 1-6 roads.
Preferably, connecting wired in series used has isolating chip.
Preferably, in addition to DDS chips, the waveform output control signal end of data processing and control module and DDS cores
The waveform output control signal input connection of piece, the output end of DDS chips connects with the input of filtering and operational amplification circuit
Connect.
Preferably, customized module also includes button, motor drive module, motor and logic circuit；
Button is connected with Digital I/O, and the motor control signal output end of data processing and control module passes through Digital I/O and electricity
The motor control signal input connection of machine drive module, the drive signal output end and motor connection of motor drive module, electricity
The motor feedback signals output end of machine drive module is defeated by the motor feedback signals of Digital I/O and data processing and control module
Enter end connection, logic circuit is connected with Digital I/O.
Preferably, external equipment realizes that external equipment is embedded in application program, application package using computer or mobile phone
Teacher users end and User end are included, teacher users end can check the operation of the Platform of Experimental Teaching of User end connection
Situation, and instruction is sent to User end, User end is used to receive the number that data processing and control module are sent
Control signal is sent according to and to reception data processing and control module, and for receiving the instruction at teacher users end.
Beneficial effect：
1st, the present invention will commonly use signal generator, impulse generator, direct voltage source, DC current in electronic experiment
Source, universal meter, oscillograph, frequency spectrograph, the function of Network Analyzer are incorporated into a hardware module, are meeting requirement of experiment
The quantity and cost of the equipment in laboratory are enormously simplify while performance, with portability, student is issued to using then can be with
Make the experimental period of student freer more abundant；
2nd, hardware components carry out networking using Wi-Fi, bluetooth, wireless data sending or wired connection, and the heart can be built in an experiment
Vertical server is managed to all experimental facilities for being connected to LAN or wide area network, teacher can as highest authority use
Family obtains the operation conditions of all experimental facilities, and can be instructed accordingly to student by network transmission；
3rd, hardware can be controlled by wireless module or USB interface by being mounted with the mobile phone or computer of software section application program
Part and the data for obtaining hardware components, and data analysis and display are carried out, single touch display screen module can also be used
It is connected with hardware components, directly displays the data result collected.
Brief description of the drawings
Fig. 1 is a kind of structural representation of portable electronic Platform of Experimental Teaching described in embodiment one；
Fig. 2 is the flow chart of teaching platform execution task in embodiment one；
Fig. 3 is by application program to emulate obtained oscillogram in embodiment one；
Fig. 4 be sent by teaching platform in embodiment one, receive after set by touch display screen module or outside
The oscillogram that standby application program is shown.
Embodiment
Embodiment one：Present embodiment is illustrated with reference to Fig. 1 to Fig. 4, includes electricity described in present embodiment
Source 1, data processing and control module 2, Digital I/O 3, universal meter chip 4, wireless module 5, USB interface 6, multiple digital analog converters
7th, multiple filtering and operational amplification circuit 8, multiple analog-digital converters 9, multiple seizure circuits 10 and customized module 11；
Power supply 1 includes voltage of direct-flow voltage regulation source and electric current source chip；
Multiple digital analog converters 7 and multiple filtering and operational amplification circuit 8 are corresponded, multiple analog-digital converters 9 and many
Individual seizure circuit 10 is corresponded；
The output control signal end of data processing and control module 2 is connected with the control signal input of digital analog converter 7,
The analog signal output of digital analog converter 7 is connected with the input end of analog signal of filtering and operational amplification circuit 8；
Outside is that power supply 1 and data processing and control module 2 are powered by USB interface 6, and external equipment passes through USB interface 6
Or wireless module 5 communicates with data processing and control module 2, the universal meter control signal end of data processing and control module 2 with
The control signal input connection of universal meter chip 4, universal meter data output end and data processing and the control of universal meter chip 4
The seizure control signal output and analog-to-digital conversion of the universal meter data input pin connection of module 2, data processing and control module 2
The seizure control signal input connection of device 9, catches the collection input signal of circuit 10, catches the collection signal output part of circuit 10
It is connected with the collection signal input part of analog-digital converter 9, digital signal output end and data processing and the control of analog-digital converter 9
The digital signal input end of module 2 is connected；
Customized module 11 includes display module and input module；
The display signal output part of data processing and control module 2 is defeated by Digital I/O 3 and the display signal of display module
Enter end to be connected, input module is used to input control signal, the control signal output of input module by Digital I/O 3 and data at
The control signal input of reason and control module 2 is connected.
In present embodiment, the output area in voltage of direct-flow voltage regulation source is -24V~+24V, is adjustable, electric current source core
The output area of piece is 0~20mA.Display module and input module are realized using touch display screen module.
Digital I/O is program control digital input-output interface, and reserved digital I/O interface uses contact pin, can pass through numeral
IO connections customized module 11 provides more functions, can also carry out input and output by User Defined, customized module 11 with
The contact pin of Digital I/O is attached.
Microprocessor, DSP or FPGA can judge whether button is pressed with scanning digital IO level states, and will be by key-like
It is application program that state, which is sent to external equipment, so as to carry out key testing teaching.Data processing and control module 2 drive to motor
Module sends control signal, for the working condition of controlled motor, is additionally operable to receive the signal that motor drive module is fed back to, from
And realize closed-loop control.The pin output level for the logic circuit that data processing and control module 2 are set according to user, detection is patrolled
The incoming level of circuit is collected, the function of the logic analysis of application of logic circuit module is realized, realizes the teaching of logic circuit.This embodiment party
The hardware components of formula are concentrated on one piece of circuit board, and support to be connected with new expanded function circuit board, with portability.
A kind of portable Platform of Experimental Teaching of the present invention.The Platform of Experimental Teaching contains hardware components and software program
Part.Hardware components comprising microprocessor, DSP or FPGA, digital analog converter, analog-digital converter, universal meter chip, Wi-Fi or
The devices such as bluetooth, can realize signal source, pulse signal generator, adjustable voltage source and current source, oscillograph, spectrum analysis
The functions such as instrument, multifunctional digital IO, universal meter；Software section includes windows application programs, Android application programs and IOS
Application program.User can set working condition and the output of hardware components on computer and mobile phone by software program；Make
User can be received and the input of viewing hardware part and the data analysis and display that carry out correlation by software program；In addition, making
User can also be by the application method of the study course learning platform on software program.
Different experiment porch can carry out networking by Wi-Fi module, bluetooth or wireless data transmission module, then access network
The computer and mobile phone of network can be recognized experiment porch by the exclusive ID of experiment porch and be set up with experiment porch and be connected into line number
According to transmission, the operation conditions for all experiment porch that the application program of teacher side can be checked inside networking, teacher side can lead to
Cross application program and send guidance to student side.
Universal meter chip is connected by RS232 agreements with data processing and control module, and user is sent out by application program
Universal meter measuring command is sent to control general-purpose watch core by I/O pin to data processing and control module, data processing and control module
The mode of operation of piece, and the output result of universal meter chip is sent to the application journey of user by data processing and control module
Sequence.
Application program under Windows, Android and ios platform provide universal meter, signal source, oscillograph, frequency spectrograph,
There is provided tie emulation there is provided the function of software emulation for Network Analyzer, the operation interface of logic analyser and result display interface
The function that the result that fruit and hardware platform are received is analyzed.
The present invention uses microprocessor (single-chip microcomputer or arm processor), DSP or FPGA as the hardware of teaching experiment platform
Partial control and first order signal processor, external equipment are that second level signal processor is real by computer or application program of mobile phone
Existing, the signal transacting of two-stage can realize signal spectral analysis, network analysis and the function of logic analysis；The function of hardware components
Property circuit has adjustable voltage of direct-flow voltage regulation source, current source, universal meter chip and universal meter interface, high-speed ADC, high-speed DAC and
Operational amplifier, DDS (Direct Digital Synthesizer) chip, the function that the electronic experiment such as PLC technology Digital I/O needs
Module, also including pluggable touch display screen module and other external connection modules；Hardware components pass through Wi-Fi network, bluetooth, nothing
Line number is passed or USB interface is attached and transmitted data with computer or mobile phone；Data processing and control are used when data volume is little
Molding block is handled and stored to data, such as carries out Fourier transformation to data, embedding using external equipment when data volume is big
The data processing module entered is handled data, and touch display screen module is shown to the data after collect and processing
Show；The data processing module of external equipment insertion can provide the software emulation result of correspondence experiment, and can be by simulation result and reality
Test the result that platform collects to be contrasted, whether judgment experiment result is correct, analyze the error of experiment；External equipment is also embedded in
There is provided power user the module to instructor, power user can connect with all hardware equipment in communication network and software equipment
Connect, it is possible to check the experimental conditions of student at any time, provide corresponding guidance；External equipment is also embedded to be used to provide whole electronics
The module of the use study course of Platform of Experimental Teaching.
Hardware components are powered by USB interface, and external equipment can be connect when using windows application programs by USB
Mouth carries out data transmission with hardware components, and Wi-Fi, bluetooth, wireless data sending and hardware components can also be used to carry out data transmission,
Android application programs and IOS application programs can only be carried out data transmission by Wi-Fi or bluetooth with hardware components.Use Wi-
, it is necessary to which computer or mobile phone to be first connected to the Wi-Fi module of hardware components when Fi carries out data transmission, it then can set hard
The Wi-Fi that part part connection user voluntarily creates, is then connected to the Wi-Fi that user voluntarily creates by computer or mobile phone.Use
, it is necessary to which the bluetooth of computer or mobile phone and hardware components is carried out into pairing connection when bluetooth carries out data transmission, then it can carry out
Data transfer.
As shown in Fig. 2 each hardware components of the platform can be initialized after platform device start, then hardware components energy
The connected mode of enough automatic detection users, hardware components start waiting for the life of user application after these execution are completed
Order, after user application have sent operational order to hardware components, data processing and control module are by operational order
Context resolution simultaneously adds the task in instruction, and these tasks include：Universal meter chip is controlled to carry out various measurements, control digital-to-analogue turns
Parallel operation produces various signals, and control analog-digital converter carries out signal collecting and controlling Digital I/O and carries out input and output；At data
Reason and control module can create corresponding task and perform after receiving instruction, and data processing and control module can appoint performing
The newer command of user is detected while business；The task of these instructions will when user does not send and stops or change the instruction of task
Can continuously carry out, in the process of implementation data processing and control module by the data produced in execution state and implementation procedure (such as
Analog-digital converter carries out the data that signal acquisition is received, the data that universal meter chip is measured) user program is sent to, use
Family program is analyzed and shows these data.
Hardware components are able to detect that whether be connected to touch display screen module in initialization procedure, when user will be outer
When the touch display screen module connect is connected to hardware components, hardware components can be by Digital I/O by the data received and operation
Situation is sent to touch display screen module, and touch display screen module can be shown to these data and operation conditions, simultaneously
Touch display screen module can detect the operation of user, receive the operation of modification hardware components working condition, lead to user
The working condition that the module controls other hardware is crossed, for the function for the application program for replacing computer and mobile phone.
When the application program of user is connected to the LAN that wide area network or teacher side are provided, data processing and control module
Whether the application program of 2 meeting automatic detection teacher sides is run, can be by hardware components when the application program of teacher side is currently running
Operation conditions and the operation conditions of software section recorded and preserved, check fortune when the application program of teacher side sends request
During row situation, the running state data for recording and preserving is sent to teacher side by the application program of user, and teacher side can be carried out
Check, when teacher is found that problem, there is a problem in user's experiment can be pointed out and some guidance meanings are sent to user
See.
Fig. 3 is similar to Fig. 4, illustrates that student's operation is correct, if the simulation waveform obtained by application program and teaching
The oscillogram dissmilarity shown after platform transmission, reception by touch display screen module, then illustrate student's operating mistake.
Embodiment two：Present embodiment is to test religion to a kind of portable electronic described in embodiment one
Learn platform to be described further, in present embodiment, connection wired in series used has isolating chip.
Isolating chip can be effectively protected the work non-interference of each device in circuit, moreover it is possible to protect chip not by
The influence of high current and big voltage and burn；In addition, to importation (analog-digital converter and universal meter) and output par, c
When the power supply of (voltage source, current source, digital analog converter) uses isolating chip, it can make the input and output of these functional circuits can
With arbitrarily in parallel or series without causing short-circuit situation.
Claims (8)
1. a kind of portable electronic Platform of Experimental Teaching, it is characterised in that including power supply (1), data processing and control module
(2), Digital I/O (3), universal meter chip (4), wireless module (5), USB interface (6), multiple digital analog converters (7), multiple filtering
And operational amplification circuit (8), multiple analog-digital converters (9), multiple seizure circuits (10) and customized module (11)；
Power supply (1) includes voltage of direct-flow voltage regulation source and electric current source chip；
Multiple digital analog converters (7) and it is multiple filtering and operational amplification circuit (8) correspond, multiple analog-digital converters (9) and
Multiple seizure circuits (10) correspond；
The output control signal end of data processing and control module (2) is connected with the control signal input of digital analog converter (7),
The analog signal output of digital analog converter (7) is connected with the input end of analog signal of filtering and operational amplification circuit (8)；
Outside is that power supply (1) and data processing and control module (2) are powered by USB interface (6), and external equipment is connect by USB
Mouth (6) or wireless module (5) communicate with data processing and control module (2), data processing and the universal meter control of control module (2)
Signal end processed is connected with the control signal input of universal meter chip (4), the universal meter data output end of universal meter chip (4) with
The universal meter data input pin connection of data processing and control module (2), data processing and the seizure of control module (2) control letter
Number output end is connected with the seizure control signal input of analog-digital converter (9), is caught circuit (10) collection input signal, is caught
The collection signal output part of circuit (10) is connected with the collection signal input part of analog-digital converter (9), the number of analog-digital converter (9)
Word signal output part is connected with the digital signal input end of data processing and control module (2)；
Customized module (11) includes display module and input module；
The display signal output part of data processing and control module (2) is defeated by Digital I/O (3) and the display signal of display module
Enter end to be connected, input module is used to input control signal, and the control signal output of input module passes through Digital I/O (3) and data
The control signal input of processing and control module (2) is connected.
2. a kind of portable electronic Platform of Experimental Teaching according to claim 1, it is characterised in that the wireless module
(5) realized using Wi-Fi module, bluetooth module or wireless data transmission module.
3. a kind of portable electronic Platform of Experimental Teaching according to claim 1, it is characterised in that the data processing and
Control module (2) is realized using single-chip microcomputer, ARM microprocessor, DSP or FPGA.
4. a kind of portable electronic Platform of Experimental Teaching according to claim 1, it is characterised in that the digital analog converter
(7) port number is 1-4 roads, and the port number of analog-digital converter (9) is 1-6 roads.
5. a kind of portable electronic Platform of Experimental Teaching according to claim 1, it is characterised in that connection wire used
It is in series with isolating chip.
6. a kind of portable electronic Platform of Experimental Teaching according to claim 1, it is characterised in that also including DDS chips
(12), the waveform output control signal end of data processing and control module (2) and the waveform output control signal of DDS chips (12)
Input is connected, and the output end of DDS chips (12) is connected with the input of filtering and operational amplification circuit (8).
7. a kind of portable electronic Platform of Experimental Teaching according to claim 1, it is characterised in that the customized module
(11) button, motor drive module, motor and logic circuit are also included；
Button is connected with Digital I/O (3), and the motor control signal output end of data processing and control module (2) passes through Digital I/O
(3) it is connected with the motor control signal input of motor drive module, the drive signal output end and motor of motor drive module
Connection, the motor feedback signals output end of motor drive module passes through Digital I/O (3) and data processing and the electricity of control module (2)
Machine feedback signal input terminal is connected, and logic circuit is connected with Digital I/O (3).
8. a kind of portable electronic Platform of Experimental Teaching according to claim 1, it is characterised in that external equipment is using electricity
Brain or mobile phone realize that external equipment is embedded in application program, and application program includes teacher users end and User end, Jiao Shiyong
Family end can check the operation conditions of the Platform of Experimental Teaching of User end connection, and send guidance meaning to User end
See, User end is used to receiving the data that data processing and control module (2) send and to receiving data processing and control mould
Block (2) sends control signal, and for receiving the instruction at teacher users end.
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| CN201710457352.3A CN107038941A (en) | 2017-06-16 | 2017-06-16 | A kind of portable electronic Platform of Experimental Teaching |
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| CN201710457352.3A CN107038941A (en) | 2017-06-16 | 2017-06-16 | A kind of portable electronic Platform of Experimental Teaching |
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| CN109272852A (en) * | 2018-11-29 | 2019-01-25 | 哈尔滨工业大学 | A kind of linear position that content is expansible control teaching experiment system and method |
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