CN107622720A - A kind of teaching experiment system based on technology of Internet of things - Google Patents
A kind of teaching experiment system based on technology of Internet of things Download PDFInfo
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- CN107622720A CN107622720A CN201710781749.8A CN201710781749A CN107622720A CN 107622720 A CN107622720 A CN 107622720A CN 201710781749 A CN201710781749 A CN 201710781749A CN 107622720 A CN107622720 A CN 107622720A
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Abstract
The invention discloses a kind of teaching experiment system based on technology of Internet of things,Including controller management module and controller module,The output end of the control management module is connected with controller module,The output end of the controller module respectively with virtual device storehouse,Circuit fault diagnosis module is connected with Visual Intelligent Interface Model,The controller module includes embedded controller and PLC,The embedded controller is connected by spi bus with PLC,The control management module includes Labview control modules,The data terminal of the Labview control modules is connected with data collecting card,The output end of the control management module is connected by LAN with system server,The experimental system can not only meet the application of technology of Internet of things teaching,Also the needs of the exeracurricular practices such as the Course Exercise of student can be met,Be advantageous to the independent learning ability and initiative spirit of training student.
Description
Technical field
The present invention relates to Internet of Things applied technical field, specially a kind of teaching experiment system based on technology of Internet of things.
Background technology
Internet of Things is passed by information such as radio frequency identification (RFID), infrared inductor, global positioning system, laser scanners
Feel equipment, by the agreement of agreement, any article is connected with internet, enter row information and exchange and communicate, to realize intelligence
Change a kind of network of identification, positioning, tracking, monitoring and management.The concept of Internet of Things was proposed in 1999.Internet of Things is exactly
" the connected internet of thing thing ".This has two layers of meaning：First, the core of Internet of Things and basis are still internet, are to interconnect
The network of extension and extension on the basis of net；Second, its user terminal extends and extend between any article and article, carries out
Information exchanges and communication.
Internet of Things has many extensive purposes, throughout intelligent transportation, environmental protection, government work, public safety, safety man
Residence, intelligent fire, industry monitoring, old man's nursing, personal health, flower culture, water system monitoring, foodstuff traceability, enemy's situation investigation and
The multiple fields such as information gathering.
In national institution of higher learning's computer science and technology specialty and electronic information-majors, teaching has generally been opened up
The course of experimental system.《Singlechip technology》,《Fundamentals of Mono-Chip Computers and interfacing application》Deng course as Engineering Speciality must
Specialized core course is repaiied, higher requirement, especially Link of Practice Teaching are proposed to teaching.The teaching of teaching experiment system is necessary
There are the experimental courses of certain class hour and high quality to coordinate the teaching of Theory Course, only in this way can just student is preferably grasped
The exploitation of single-chip microcomputer, the ability for practice of starting is improved, cultivates initiative spirit, but at present, China Higher universities and colleges are based on Internet of Things
In the teaching process of net or in the prevalence of some problems, this also restricts and limited the culture to the microcomputer development talent
Speed.The problem present in educational engineering is concentrated mainly on following in terms of these：
(1) teaching experiment course is based on theory explaination.The most of the time in whole term is all that teacher is lecturing Internet of Things
Net and the knowwhy of operation, although student can also understand, often have half knowledge, Internet of Things is imparted knowledge to students after finishing
The concept of system is still very fuzzy, it is desirable to which student's stand-alone development program is even more just impossible mission；
(2) school experiment room resource-constrained.Because the price of the teaching experiment system based on Internet of Things is still costly
, so the school duty room configuration resource of colleges and universities is very limited at present, it is impossible to meet the requirement of students'autonomous study；
(3) under such circumstances, a low cost, open source are built, and there is complete circuit principle at present
The teaching experiment system of figure is necessary.The control production cost that this set system can be strict first, makes laboratory
Equipment investment declines to a great extent, and can introduce more experimental facilities, meets that each student can be a set of with human hand when testing；Secondly
According to the content of the more flexible Teaching of the actual conditions of school and student the combination of theory and practice can also be made more to step up
It is close；The independent learning ability of training student and the purpose of initiative spirit are finally reached, the culture to the talent in terms of Internet of Things exploitation
Innovation with practical teaching is significant.
The content of the invention
In order to overcome the shortcomings of prior art, the present invention provides a kind of teaching experiment system based on technology of Internet of things
System, is made up of, hardware components develop phase according to the actual conditions of student and the requirement of production cost hardware and software two parts
The interface circuit answered, while also draw whole pin resources of controller, develop and extend beneficial to student oneself, software section is set
The source code of suitable student's practice is counted, the experimental system can not only meet that Internet of Things swashs the application of technique teaching, can also meet
The needs of the exeracurricular practices such as the Course Exercise of student, be advantageous to the independent learning ability and initiative spirit of training student, energy
It is effective to solve the problems, such as background technology proposition.
The technical solution adopted for the present invention to solve the technical problems is：A kind of teaching experiment system based on technology of Internet of things
System, including controller management module and controller module, the output end of the control management module are connected with controller module,
The output end of the controller module is connected with virtual device storehouse, circuit fault diagnosis module and Visual Intelligent Interface Model respectively
Connect, the controller module includes embedded controller and PLC, and the embedded controller passes through spi bus and PLC
Controller is connected, and the output end of the embedded controller is connected by wireless transceiver with information propagation module, described
The input of embedded controller is connected with UART interface and RS232 interface, and the bidirectional port of the embedded controller passes through
Control line A/D converter is connected, and the output of the A/D converter is connected by differential transformer with AC servo motor
Connect, the output end of the AC servo motor is connected with display curtain, and the drive end of the display curtain is connected with driver
Connect, the control terminal of the driver is connected with embedded controller, and the control management module includes Labview control moulds
Block, the data terminal of the Labview control modules are connected with data collecting card, and in the data terminal of Labview control modules
Data processing module is also associated with, the output end of the control management module is connected by LAN with system server.
As a kind of preferable technical scheme of the present invention, the data terminal of the system server passes through LAN and data
Storehouse is exchanged with each other, and the database uses interactive database tactic pattern.
As a kind of preferable technical scheme of the present invention, the signal end of the PLC is provided with communication interface and opened up
Interface is opened up, and the data terminal of PLC is connected with data storage, and the signal end of the PLC is also associated with defeated
Enter unit and output unit.
As a kind of preferable technical scheme of the present invention, signal end and the multichannel analog signals input mould of the input block
Block is connected, and the signal end of the output unit is connected with multichannel analog signals output module.
As a kind of preferable technical scheme of the present invention, the multichannel analog signals input module is including control unit and in advance
Process circuit, described control unit are internally provided with address decoding circuitry, the output end of described control unit by control line with
Multicircuit switch is connected, and the signal output part of the pretreatment circuit is connected with the control terminal of multicircuit switch, institute
The output end for stating multicircuit switch is connected by CRC check algorithm with data converter, the output of the data converter
End is connected by photoisolator with data driver, and the control terminal of the data driver is connected with control unit, institute
The signal end for stating control unit is connected with embedded controller.
As a kind of preferable technical scheme of the present invention, the output end of the data driver is connected with bus driver block
Connect, the output end of the bus driver block is connected by PLC buses with PLC, the output end of described control unit
Also it is connected by distributor with bus driver block.
As a kind of preferable technical scheme of the present invention, the output end and virtual interactive interface of the Labview control modules
Interface is connected, and the output end of the Visual Intelligent Interface Model is controlled by open closed loop control module and photoelectric sensor with motion
Device processed is connected, and the output end of the motion controller is connected with PLC.
As a kind of preferable technical scheme of the present invention, the signal end of the embedded controller is also associated with motion control
Unit, the motion control unit include servo control module, step motion control module, servo antrol module and inductive position and passed
Sensor.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) system hardware interface of the invention is relatively abundanter, is fully able to meet the needs of controller module experimental teaching.
This experimental system provides substantial amounts of experimental project and selected for teacher, carries out the experimental teaching of different levels, teacher can be made more preferable
Development experimental teaching, student is preferably grasped basic development technique, and present system provides corresponding all
Circuit theory, analysis of the student in study to hardware circuit is become apparent from, the ability of circuit design can be improved comprehensively, and
, can be for student with reference to modification program and supporting experiment has the source code of corresponding C language and assembler language；
(2) present invention controls virtual device storehouse by controller module, and real physical device is simulated with software, is allowed to
Real device can be substituted in Virtual Experiment Environment to be tested, and utilize the powerful data-handling capacity of personal computer, figure
Shape generates and online help function, establishes the virtual control panel with good Man machine interaction, completes to virtual device
Control, result analysis and display, realize the various functions for being defined by the user, being adapted to different application environment completely.It is whole empty
Intend device to be realized by software completely, developer can by changing software, it is convenient change or the function of increase and decrease virtual device and
Scale, or even change the property of device, practice process is realized for student, can be according to virtual software by the number of operation process
According to or programming carry out emulation and verified, improve the ability of practice of student, and the virtual control panel of device is than actual thing
It is more powerful to manage the operational control panel feature of device, can more meet the different demands of different user or the different need of same user
Ask.
(3) operating system of the invention mainly first passes through visualization interface and data parameters is modified, then by controller
The control system of module is programmed control, builds hardware platform using the virtual unit inside virtual device storehouse, and use
Peripheral Interface emulates to hardware platform, will emulate data syn-chronization to server by wireless transceiver, and realize that resource will be total to
Enjoy, whole system structure is smaller, and expense is low, and powerful, is used suitable for different user.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the embedded controller structural representation of the present invention；
Fig. 3 is the PLC structural representation of the present invention.
In figure：1- controls management module；2- controller modules；3- input blocks；4- output units；5- virtual devices storehouse；
6- circuit fault diagnosis modules；7- databases；8- system servers；
100-Labview control modules；101- data collecting cards；102- data processing modules；103- virtual interactive interfaces circle
Face；104- open closed loop control modules；105- photoelectric sensors；106- motion controllers；
200- embedded controllers；201-PLC controllers；202-SPI buses；203- wireless transceivers；204- information passes
Broadcasting module；205-UART interfaces；206-RS232 interfaces；207-A/D converters；208- differential transformers；209- AC servos electricity
Machine；210- shows curtain；211- drivers；212- communication interfaces；213- expands interface；214- data storages；215- is moved
Control unit；216- servo control modules；217- step motion control modules；218- servo antrol modules；219- inductive positions pass
Sensor；
300- multichannel analog signals input modules；301- control units；302- pre-processes circuit；303- address decodings electricity
Road；304- multicircuit switches；305-CRC checking algorithms；306- data converters；307- photoisolators；308- data are driven
Dynamic device；309- bus driver blocks；310-PLC buses；311- distributors；
400- multichannel analog signals output modules.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The explanation of following embodiment is refer to the attached drawing, can be to the specific embodiment implemented to the example present invention.
The direction and position term that the present invention is previously mentioned, for example, " on ", " in ", " under ", "front", "rear", "left", "right", " interior ", "
Outside ", " side " etc., only it is direction and position with reference to annexed drawings.Therefore, the direction and position term used is to illustrate
And understand the present invention, and it is not used to the limitation present invention.
Embodiment：
As shown in figure 1, the invention provides a kind of teaching experiment system based on technology of Internet of things, including controller management
Module 1 and controller module 2, the output end of the control management module 1 are connected with controller module 2, the controller mould
The output end of block 2 is connected with virtual device storehouse 5, circuit fault diagnosis module 6 and Visual Intelligent Interface Model 103 respectively, described
Controller module 2 includes embedded controller 200 and PLC 201, and the embedded controller 200 passes through spi bus
202 are connected with PLC 201, and the output end of the embedded controller 200 is passed by wireless transceiver 203 and information
Broadcasting module 204 is connected, and the input of the embedded controller 200 is connected with UART interface 205 and RS232 interface 206, institute
The bidirectional port for stating embedded controller 200 is connected by control line A/D converter 207, the A/D converter 207 it is defeated
Go out and be connected by differential transformer 208 with AC servo motor 209, the output end of the AC servo motor 209 is with showing
Show that curtain 210 is connected, the drive end of the display curtain 210 is connected with driver 211, the control of the driver 211
End is connected with embedded controller 200, and the control management module 1 includes Labview control modules 100, the Labview
The data terminal of control module 100 is connected with data collecting card 101, and is also connected with the data terminal of Labview control modules 100
There is data processing module 102, the output end of the control management module 1 is connected by LAN with system server 8；Institute
The data terminal for stating system server 8 is exchanged with each other by LAN and database 7, and the database 7 uses interactive data
Library structure pattern.
The circuit fault diagnosis module 6 is mainly that the circuit built to user carries out trouble shooting.For example, leg signal
Whether conflict, power supply whether connect connected with pin it is whether reasonable etc..It should be strongly noted that on the experimental bench of reality
When being tested, in the absence of leg signal conflict, virtual instruction experimental system extends the function of actual experiment platform, by two
The situation of out type pin interconnections is considered as the conflict of leg signal, this primarily to shorten user to circuit carry out misarrangement when
Between, ensure Success in Experiment.
The operational control of virtual device inside the virtual device storehouse 5 and its result display portion are user and virtual machine
The interface that part interacts.User carries out operational control by this interface to virtual device, the actual physical device such as biconditional operation.
Virtual device shows the state and result of device by boundary's user oriented, therefore, the interactive interface of virtual device, also known as void
Intend control panel, be the core component of virtual device, from the user point of view, virtual device it is virtual largely
Just it is embodied on virtual control panel.
Described information propagation module 204 is made up of active device, signal processing chip and passive device, the transmission of signal
Active device is started from, and terminates at passive device, centre can pass through some reason chips, and processing conversion is carried out to initial signal, and
Signal has pertained only to the pin and circuit lead of each virtual device during transmission, and does not have with specific virtual device
There is relation.Signal processor in system is simply handled oneself received signal by calculating, is converted into output signal
Pass, final result is the assignment again of pin.
As shown in figure 3, the signal end of the PLC 201 is provided with communication interface 212 and expands interface 213, and
The data terminal of PLC 201 is connected with data storage 214, and the signal end of the PLC 201 is also associated with defeated
Enter unit 3 and output unit 4.The signal end of the input block 3 is connected with multichannel analog signals input module 300, described
The signal end of output unit 4 is connected with multichannel analog signals output module 400, the multichannel analog signals input module 300
Including control unit 301 and pretreatment circuit 302, described control unit 301 is internally provided with address decoding circuitry 303, described
The output end of control unit 301 is connected by control line with multicircuit switch 304, the signal of the pretreatment circuit 302
Output end is connected with the control terminal of multicircuit switch 304, and the output end of the multicircuit switch 304 passes through CRC check
Algorithm 305 is connected with data converter 306, and the output end of the data converter 306 passes through photoisolator 307 and data
Driver 308 is connected, and the control terminal of the data driver 308 is connected with control unit 301, described control unit 301
Signal end be connected with embedded controller 200, output end and the phase of bus driver block 309 of the data driver 308
Connection, the output end of the bus driver block 309 are connected by PLC buses 310 with PLC 201, and the control is single
The output end of member 301 is also connected by distributor 311 with bus driver block 309.
The effect of the controller module 2 is that a certain function of control normally realizes there is many controllers, example in whole system
Such as self routing controller, the normal operation of self routing is controlled；Hand wired controller, ensure the normal complete of hand wired
Into；Each virtual device has the controller of oneself, coordinates each part normal work of virtual device；Display controller,
Ensure correct display of experimental result etc..Therefore, controller module is usually contained among other specific modules.
The effect of the controller management module 1 is correct according to the selection of the input of user, operational order and experimental situation
Controller simulation process is controlled, it is ensured that emulation experiment is normally carried out or obtained correct simulation result, and leads to
Data syn-chronization will be emulated to server by crossing wireless transceiver, be referred to for more students, be advantageously implemented resource-sharing.
As depicted in figs. 1 and 2, the output end of the Labview control modules 100 is connected with Visual Intelligent Interface Model 103
Connect, the output end of the Visual Intelligent Interface Model 103 is controlled by open closed loop control module 104 and photoelectric sensor 105 with motion
Device 106 processed is connected, and the output end of the motion controller 106 is connected with PLC 201, the embedded controller
200 signal end is also associated with motion control unit 215, and the motion control unit 215 includes servo control module 216, step
Enter control module 217, servo antrol module 218 and inductive position sensor 219, it is described to utilize Labview control modules 100
Visual Intelligent Interface Model 103 is controlled to realize the function of display, the module is mainly responsible for the display work of whole emulation experiment, will be
System internal state or Experimental results show are to user, and therefore, whether virtual instruction experimental system operating platform is friendly or attracts to use
Family.
In summary, the main characteristic of the invention lies in that：
(1) system hardware interface of the invention is relatively abundanter, is fully able to meet the needs of controller module experimental teaching.
This experimental system provides substantial amounts of experimental project and selected for teacher, carries out the experimental teaching of different levels, teacher can be made more preferable
Development experimental teaching, student is preferably grasped basic development technique, and present system provides corresponding all
Circuit theory, analysis of the student in study to hardware circuit is become apparent from, the ability of circuit design can be improved comprehensively, and
, can be for student with reference to modification program and supporting experiment has the source code of corresponding C language and assembler language；
(2) present invention controls virtual device storehouse by controller module, and real physical device is simulated with software, is allowed to
Real device can be substituted in Virtual Experiment Environment to be tested, and utilize the powerful data-handling capacity of personal computer, figure
Shape generates and online help function, establishes the virtual control panel with good Man machine interaction, completes to virtual device
Control, result analysis and display, realize the various functions for being defined by the user, being adapted to different application environment completely.It is whole empty
Intend device to be realized by software completely, developer can by changing software, it is convenient change or the function of increase and decrease virtual device and
Scale, or even change the property of device, practice process is realized for student, can be according to virtual software by the number of operation process
According to or programming carry out emulation and verified, improve the ability of practice of student, and the virtual control panel of device is than actual thing
It is more powerful to manage the operational control panel feature of device, can more meet the different demands of different user or the different need of same user
Ask.
(3) operating system of the invention mainly first passes through visualization interface and data parameters is modified, then by controller
The control system of module is programmed control, builds hardware platform using the virtual unit inside virtual device storehouse, and use
Peripheral Interface emulates to hardware platform, will emulate data syn-chronization to server by wireless transceiver, and realize that resource will be total to
Enjoy, whole system structure is smaller, and expense is low, and powerful, is used suitable for different user.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Claims (8)
- A kind of 1. teaching experiment system based on technology of Internet of things, it is characterised in that：Including controller management module (1) and control Device module (2), the output end of the control management module (1) are connected with controller module (2)；The output end of the controller module (2) respectively with virtual device storehouse (5), circuit fault diagnosis module (6) and visualization Interactive interface (103) is connected, and the controller module (2) includes embedded controller (200) and PLC (201), institute State embedded controller (200) by spi bus (202) with PLC (201) to be connected, the embedded controller (200) output end is connected by wireless transceiver (203) with information propagation module (204), the embedded controller (200) input is connected with UART interface (205) and RS232 interface (206), the embedded controller (200) it is two-way Port is connected by control line A/D converter (207), and the output of the A/D converter (207) passes through differential transformer (208) be connected with AC servo motor (209), output end and the display curtain (210) of the AC servo motor (209) Be connected, it is described display curtain (210) drive end be connected with driver (211), the control terminal of the driver (211) and Embedded controller (200) is connected；The control management module (1) includes Labview control modules (100), the number of the Labview control modules (100) It is connected according to end with data collecting card (101), and data processing is also associated with the data terminal of Labview control modules (100) Module (102), the output end of the control management module (1) are connected by LAN with system server (8).
- A kind of 2. teaching experiment system based on technology of Internet of things according to claim 1, it is characterised in that：The system The data terminal of server (8) is exchanged with each other by LAN and database (7), and the database (7) uses interactive data Library structure pattern.
- A kind of 3. teaching experiment system based on technology of Internet of things according to claim 1, it is characterised in that：The PLC The signal end of controller (201) is provided with communication interface (212) and expands interface (213), and the data of PLC (201) End is connected with data storage (214), and the signal end of the PLC (201) is also associated with input block (3) and output Unit (4).
- A kind of 4. teaching experiment system based on technology of Internet of things according to claim 3, it is characterised in that：The input The signal end of unit (3) is connected with multichannel analog signals input module (300), the signal end of the output unit (4) with it is more Road analog signal output module (400) is connected.
- A kind of 5. teaching experiment system based on technology of Internet of things according to claim 4, it is characterised in that：The multichannel Analog signal input module (300) includes control unit (301) and pretreatment circuit (302), and described control unit (301) is internal Address decoding circuitry (303) is provided with, the output end of described control unit (301) passes through control line and multicircuit switch (304) it is connected, the signal output part of the pretreatment circuit (302) is connected with the control terminal of multicircuit switch (304), The output end of the multicircuit switch (304) is connected by CRC check algorithm (305) with data converter (306), described The output end of data converter (306) is connected by photoisolator (307) with data driver (308), and the data are driven The control terminal of dynamic device (308) is connected with control unit (301), the signal end and embedded Control of described control unit (301) Device (200) is connected.
- A kind of 6. teaching experiment system based on technology of Internet of things according to claim 5, it is characterised in that：The data The output end of driver (308) is connected with bus driver block (309), and the output end of the bus driver block (309) is led to Cross PLC buses (310) with PLC (201) to be connected, the output end of described control unit (301) is also deposited by centre Device (311) is connected with bus driver block (309).
- A kind of 7. teaching experiment system based on technology of Internet of things according to claim 1, it is characterised in that：It is described The output end of Labview control modules (100) is connected with Visual Intelligent Interface Model (103), the Visual Intelligent Interface Model (103) output end is connected by open closed loop control module (104) and photoelectric sensor (105) with motion controller (106) Connect, the output end of the motion controller (106) is connected with PLC (201).
- A kind of 8. teaching experiment system based on technology of Internet of things according to claim 1, it is characterised in that：The insertion The signal end of formula controller (200) is also associated with motion control unit (215), and the motion control unit (215) includes servo Control module (216), step motion control module (217), servo antrol module (218) and inductive position sensor (219).
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| CN110910728A (en) * | 2019-11-30 | 2020-03-24 | 天津大学 | Virtual simulation experiment method for fault diagnosis of unit circuit |
| CN111487159A (en) * | 2020-05-22 | 2020-08-04 | 安徽师范大学 | Density measuring device based on communication technology of Internet of things |
| CN111599221A (en) * | 2020-05-29 | 2020-08-28 | 许昌学院 | Intelligent English teaching system for English teaching |
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