CN201576371U - Remote-control teaching training system based on wide area network - Google Patents
Remote-control teaching training system based on wide area network Download PDFInfo
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- CN201576371U CN201576371U CN2009202975424U CN200920297542U CN201576371U CN 201576371 U CN201576371 U CN 201576371U CN 2009202975424 U CN2009202975424 U CN 2009202975424U CN 200920297542 U CN200920297542 U CN 200920297542U CN 201576371 U CN201576371 U CN 201576371U
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Abstract
The utility model provides a remote-control teaching training system based on a wide area network, comprising a measure and control instrument, a communication frontend processor and a local backstage machine, wherein the measure and control instrument is connected with the communication frontend processor by a local fieldbus, and the local backstage machine is connected with the communication frontend processor by a local area network. The system also comprises a wide area network server and a mobile-phone terminal, wherein the mobile-phone terminal is communicated with the communication frontend processor by the wide area network server. The communication frontend processor is the data transfer station among the measure and control instrument, the local backstage machine and the wide area network server. Compared with the prior art, the remote-control teaching training system can realize the monitoring control of a plurality of monitor terminals, such as a mobile phone, the wide area network server and the local backstage machine to the measure and control instrument as the system comprises three layers of network structures of the local fieldbus, the local area network and a wide area network. Thus, students are trained in the system, can do hardware and software experiment on the measure and control instrument and the communication frontend processor, can also do software design on hardware, such as the local backstage machine, the wide area network server, the mobile phone, and the like, and design a complete wide area network measure and control system.
Description
Technical field
The utility model relates to a kind of Long-distance Control practice teaching system that is applied in the relevant weak electricity systems of specialty such as observing and controlling, information, electromechanical integration, industrial automation, particularly a kind of Long-distance Control practice teaching system based on wide area network.
Background technology
At present, industrial control system is transformed to field bus control system by dcs.Because industrial control system itself has the feature (scope is greater than 1200 meters) of wide areaization, and along with the popularizing of GPRS, CDMA, 3G network and mobile phone, industrial control system progresses into the wide-area control system stage.And,, also lack the experience system of wide area network though have the experience system of fieldbus aspect the practice teaching of Majors such as observing and controlling, information, cause the inconvenience of student's practice teaching.
Disclose a kind of " novel Principles of Microcomputers and CAN bus experiment device for teaching " as Chinese patent CN2758901Y, be a kind of Fieldbus Based experiment device for teaching, though this device has been realized field bus communication, the wan communication of being unrealized.
The utility model content
At the problem that prior art exists, the purpose of this utility model is to provide a kind of Long-distance Control practice teaching system that can realize wan communication.
The utility model is based on the Long-distance Control practice teaching system of wide area network, comprise measure and control instrument, communication front end processor and local background computer, this measure and control instrument links to each other with the communication front end processor by local fieldbus, and local background computer links to each other with the communication front end processor by LAN (Local Area Network); This system also comprises wide area network server and mobile phone terminal, and wherein mobile phone terminal is communicated by letter with the communication front end processor by wide area network server, and the communication front end processor is the data relay station between measure and control instrument, local background computer and the wide area network server.Wherein, this mobile phone terminal can be smart mobile phone.
This mobile phone terminal is transfer with the wide area network server, realize exchanges data by GPRS network, cdma network or 3G network and communication front end processor, to reach the purpose that each measure and control instrument is monitored control, this mobile phone terminal can be realized exchanges data with the mode and the communication front end processor of note or TCP/IP data stream.
In addition, measure and control instrument comprises CPU element, and this CPU element can be Unit 51,80X86 processor unit or ARM7 processor unit.When the CPU element of measure and control instrument is Unit 51, can burned user program, or burned MON51 watchdog routine, in the online hard emulation of KEIL C Platform Implementation; When the CPU element of measure and control instrument was the 80X86 processor unit, the simulation software of host computer was Boland C++.
The utility model owing to comprise local fieldbus, LAN (Local Area Network) and wide area network three-layer network structure, can be realized the supervision control of a plurality of monitor terminals to measure and control instrument with respect to prior art.As mobile phone terminal can be transfer with the wide area network server, by the exchanges data realization of GPRS/CDMA/3G network and communication front end processor the supervision of each measure and control instrument is controlled; Wide area network server can be communicated by letter with the communication front end processor, and monitors each measure and control instrument by the communication front end processor; And local background computer also can be monitored each measure and control instrument by the communication front end processor.Like this, the student is real training on native system, not only on measure and control instrument, communication front end processor, carry out hardware, software experimentation, can also on hardware such as local background computer, wide area network server and mobile phone, do software design, design complete wide area network TT﹠C system, be an omnibearing real training platform, be different from general experimental box or experience system.
Description of drawings
Fig. 1 is the Long-distance Control practice teaching system construction drawing of the utility model based on wide area network
Fig. 2 is the functional structure chart of measure and control instrument in the utility model
Fig. 3 is the wiring diagram of temperature control test in the utility model
Fig. 4 is the wiring diagram of motion control test in the utility model
Embodiment
Below in conjunction with accompanying drawing, specify embodiment of the present utility model.
As shown in Figure 1, be the Long-distance Control practice teaching system construction drawing of the utility model based on wide area network.This system comprises measure and control instrument, and measure and control instrument is applied to the observing and controlling object, and measure and control instrument and observing and controlling object can be one or more.This system also comprises communication front end processor, local background computer, wide area network server and mobile phone terminal.Wherein measure and control instrument links to each other with the communication front end processor by local fieldbus; The communication front end processor is connected with local background computer by LAN (Local Area Network); Mobile phone terminal, wide area network server and communication front end processor are connected by wide area network, and the communication front end processor is the data relay station between measure and control instrument, local background computer and the wide area network server.The communication front end processor have Ethernet interface, RS232 RS485 interface, GPRS CDMA the 3G interface.Say that overview promptly the communication front end processor is communicated by letter with each measure and control instrument by local fieldbus; And the communication front end processor has Ethernet interface, can communicate by letter local background computer operation monitoring, control, data storage software, the function of each measure and control instrument of realization monitoring with local background computer; Wide area network server links to each other with the communication front end processor by wide area network, and its operation monitoring, control, data storage software are also communicated by letter with the communication front end processor, monitor each measure and control instrument by the communication front end processor; And mobile phone terminal is transfer with the wide area network server, realize exchanges data by wide area network (as GPRS network, cdma network or 3G network) and communication front end processor, to reach the purpose that each measure and control instrument is monitored control, this mobile phone terminal can be realized exchanges data with the mode and the communication front end processor of note or TCP/IP data stream.Like this, just can realize measure and control instrument being monitored the function of control with multiple monitor terminals such as mobile phone, wide area network server and local background computers.
As shown in Figure 2, be the functional structure chart (the following model of respectively installing is only for enumerating) of measure and control instrument in the utility model.This measure and control instrument mainly comprises CPU element and CPLD unit (model EPM570), and the two is connected by bidirectional data line.Measure and control instrument also comprises storage unit (E2PROM, model 24CXX), real-time clock (model PCF8563) and CAN communication part, and the three is connected with CPU element is two-way.The CAN communication part then comprises CAN controller (model SJA1000), CAN driver (model 82C250) and bnc interface (being coaxial cablet joint).In addition, measure and control instrument comprises that also input-output units such as keyboard, LCD, LED are connected with the CPLD unit is two-way; Comprise that also multichannel input, output digital quantity passage and multichannel input, output analog quantity channel are connected with the CPLD unit respectively.Wherein input and output digital quantity passage comprises that the DI unit (is the digital quantity input block, model 74HC245), power DO unit (is a power digital quantity output unit, model MC1413), the DO unit (is the digital quantity output unit, model 74HC574) and the digital quantity interface, DI unit, power DO unit, three unit, DO unit are respectively with the CPLD unit and the digital quantity interface is two-way is connected.The input analog amount passage comprises that (the SMA interface is a kind of Interface Terminal for AD converter (model AD7718), signal conditioning circuit (model OPA2134), SMA interface, also can be with other alternative model) and constant current source (model LM317), simulating signal is transferred to signal conditioning circuit from the SMA interface, be transferred to AD converter by amplification, filtering after converting standard signal to through signal conditioning circuit, AD converter is transferred to the CPLD unit after the analog signal conversion of transmitting is become digital signal; The output analog quantity channel comprises DA converter (model DAC8552), signal conditioning circuit (model OPA2134), SMA interface and constant current source (model LM317), wherein digital signal is transferred to the DA converter from the CPLD unit, the DA converter is transferred to signal conditioning circuit after converting the digital signal of transmitting to simulating signal, signal conditioning circuit converts to and is transferred to the SMA interface again through amplification, filtering, by the SMA interface simulating signal is exported.
In addition, the CPU element of measure and control instrument can (comprise device: the single-chip microcomputer model can be 89C516 for Unit 51, latch 74HC573, two 62256 of storeies) or 80X86 processor unit (comprising device: 80X86 and 2 71C18163 RAM, 29F040 Flash) or ARM7 processor unit (model LM3S8962).When the CPU element of using measure and control instrument is Unit 51, can burned user program, or burned MON51 watchdog routine, in the online hard emulation of KEIL C Platform Implementation; When the CPU element of using measure and control instrument during as the 80X86 processor, the simulation software of host computer is Boland C++; When the CPU element of using measure and control instrument during as the ARM7 processor, the simulation software of host computer is IAR.
The difference of the measure and control instrument that the inner structure of measure and control instrument and CN2758901Y disclose in the utility model is that the disclosed measure and control instrument of CN2758901Y is a computer plug-in card, need be plugged on the computer, and measure and control instrument of the present utility model is to use chip microcontroller, is an independent device; And be that with the difference of common single chip computer experiment device common scm test device lacks the CAN communication part, and measure and control instrument of the present utility model has increased the CAN communication part.Main is: measure and control instrument is the part of wide area TT﹠C system in the utility model.
The observing and controlling object of this Long-distance Control practice teaching system can be temperature control object or sequence logical control works fine object.Certainly this just enumerates, and this experience system can also have the real training project of other various deformation at various application.
As shown in Figure 3, be the wiring diagram of temperature control test in the utility model, its observing and controlling object is the temperature control object.Wherein, measure and control instrument partly comprises AD converter (model AD7718), SMA interface, constant current source (model LM317), power DO unit (model MC1413) and digital quantity interface.Controlled target temperature partly comprises platinum resistance (model Pt100), solid-state relay, heater strip.Its principle of work is: the constant current source output current (as 10mA) in the measure and control instrument, electric current flows through platinum resistance (model Pt100) by the SMA interface, voltage on the platinum resistance inserts the SMA interface of measure and control instrument, realize that AD gathers, the branch kilsyth basalt by platinum resistance (model Pt100) can calculate the measurement temperature.The power DO output signal of measure and control instrument control opening, breaking of solid-state relay by control line output high-low level, thereby control adds heat to the digital quantity interface.Measure and control instrument also has civil power zero cross fired signal to receive the outer interruption pin of CPU, thereby realizes the temperature control of zero trigger mode, reduces the interference to civil power.Utilize the Long-distance Control practice teaching system of the utility model based on wide area network, the information of temperature control can pass to mobile phone, and mobile phone can also be set the temperature control point, revises the parameter of control algolithm.
As shown in Figure 4, be the wiring diagram of motion control test in the utility model, its observing and controlling object is the sequence logical control works fine object.Wherein measure and control instrument partly comprises DI unit (model 74HC245), power DO unit (model MC1413) and digital quantity interface; The sequence logical control works fine object part comprises two limit switches, and promptly limit switch 1 and limit switch 2 also comprise 4 phases, 5 line stepper motor and motions, and wherein motion comprises screw mandrel and slide block.7 road power digital quantities are arranged from the output of power DO unit in the measure and control instrument, every road drive current can reach 100mA.With wherein 4 the tunnel can being transferred to 45 line stepper motors mutually with four control lines, to control 45 line stepper motors mutually,, can realize just changeing, counter-rotating and rotating speed control according to the programming of Stepping Motor Control sequential by the digital quantity interface.The step motor drive screw mandrel allows slide block movement, and slide block movement touches limit switch to certain position, be limit switch 1, measure and control instrument obtains this signal by the digital quantity interface, changes the rotation direction of stepper motor, slide block is moved round about, slide block movement touches another limit switch to the another location, and promptly limit switch 2, measure and control instrument obtains this signal by the digital quantity interface, stepper motor changes rotation direction again, so goes round and begins again, and slide block is 2 limit switch to-and-fro movements.Utilize the Long-distance Control practice teaching system of the utility model based on wide area network, the information of motion can pass to mobile phone, and mobile phone can also be controlled direction of motion, the speed of slide block.
The utility model realizes to each measure and control instrument is monitored control mobile phone by wide area network.But the utility model is not limited to above embodiment, and any technical solutions of the utility model that do not break away from are promptly only carried out improvement or the change that those of ordinary skills knew to it, all belong within the protection domain of the present utility model.
Claims (6)
1. Long-distance Control practice teaching system based on wide area network, comprise measure and control instrument, communication front end processor and local background computer, described measure and control instrument links to each other with the communication front end processor by local fieldbus, described local background computer links to each other with the communication front end processor by LAN (Local Area Network), it is characterized in that this system also comprises wide area network server and mobile phone terminal, wherein said mobile phone terminal is communicated by letter with the communication front end processor by wide area network server, and the communication front end processor is the data relay station between measure and control instrument, local background computer and the wide area network server.
2. the Long-distance Control practice teaching system based on wide area network according to claim 1 is characterized in that described mobile phone terminal is transfer with the wide area network server, by GPRS network or cdma network or 3G network and communication front end processor realization exchanges data.
3. the Long-distance Control practice teaching system based on wide area network according to claim 2 is characterized in that, described mobile phone terminal is realized exchanges data with the mode and the communication front end processor of note or TCP/IP data stream.
4. the Long-distance Control practice teaching system based on wide area network according to claim 1 is characterized in that described measure and control instrument comprises CPU element, and described CPU element can be Unit 51 or 80X86 processor unit or ARM7 processor unit.
5. the Long-distance Control practice teaching system based on wide area network according to claim 4, it is characterized in that, when the CPU element of described measure and control instrument is Unit 51, can burned user program, or burned MON51 watchdog routine, in the online hard emulation of KEIL C Platform Implementation.
6. the Long-distance Control practice teaching system based on wide area network according to claim 4 is characterized in that when the CPU element of described measure and control instrument was the 80X86 processor unit, the simulation software of host computer was BolandC++.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202975424U CN201576371U (en) | 2009-12-23 | 2009-12-23 | Remote-control teaching training system based on wide area network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202975424U CN201576371U (en) | 2009-12-23 | 2009-12-23 | Remote-control teaching training system based on wide area network |
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| Publication Number | Publication Date |
|---|---|
| CN201576371U true CN201576371U (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202975424U Expired - Fee Related CN201576371U (en) | 2009-12-23 | 2009-12-23 | Remote-control teaching training system based on wide area network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102855788A (en) * | 2012-09-28 | 2013-01-02 | 北京联合大学 | Modularized information processing test system and method based on tablet computer |
| CN107102921A (en) * | 2017-03-23 | 2017-08-29 | 北京航天自动控制研究所 | It is a kind of towards the digital quantity monitoring method with I/O type digital quantity asynchronous ports SoC |
-
2009
- 2009-12-23 CN CN2009202975424U patent/CN201576371U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102855788A (en) * | 2012-09-28 | 2013-01-02 | 北京联合大学 | Modularized information processing test system and method based on tablet computer |
| CN102855788B (en) * | 2012-09-28 | 2015-08-05 | 北京联合大学 | A kind of modularization information process experimental system based on panel computer and method |
| CN107102921A (en) * | 2017-03-23 | 2017-08-29 | 北京航天自动控制研究所 | It is a kind of towards the digital quantity monitoring method with I/O type digital quantity asynchronous ports SoC |
| CN107102921B (en) * | 2017-03-23 | 2020-05-12 | 北京航天自动控制研究所 | Digital quantity monitoring method for SoC (system on chip) with I/O (input/output) type digital quantity asynchronous port |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20121223 |