CN104240558A - Embedded-technology training system and training method thereof - Google Patents
Embedded-technology training system and training method thereof Download PDFInfo
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Abstract
The invention discloses an embedded-technology training system and a training method thereof. The embedded-technology training system is a central and independent module of an integrated training platform of the internet of things; as an independent intelligent terminal, the embedded-technology training system comprises hardware and software, can serve as embedded-technology training equipment for specialties of electronic information technology or computer, can serve as a middle transmission layer in an internet-of-things project, and can monitor sensing layer equipment or exchange data with an upper computer through a network. Students can install and debug the internet-of-things project by themselves, write corresponding programs, and understand and master the embedded application technology better.
Description
Technical field
The invention belongs to Internet of Things application technology and electronic information technology, be specifically related to a kind of embedded technology experience system and practical training method thereof.
Background technology
Along with Internet of Things industry developing rapidly in China, the demand of enterprise to Internet of Things person skilled progressively increases, and Ge great institution of higher learning have offered Internet of Things specialized courses all successively, and Internet of Things enterprise has also carried out corresponding staffs training.In these research and teachings and staffs training, the real training of embedded technology is an important link, but the teaching of existing Internet of Things is lacking a kind of Practical training equipment supporting to embedded technology and corresponding practical training method.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of embedded technology experience system and practical training method thereof are provided.The present invention is core in Internet of Things comprehensive practical traning platform and standalone module, hardware and software is contained as independently intelligent terminal, can be used as the Practical training equipment of the embedded technology of electronic information majors (partially hard) or Computer Specialty (partially soft), also as the intermediate conveyor layer in Internet of Things project, can monitor sensing layer equipment or exchange data by network and host computer; Student can start to install, debug Internet of Things project, and writes corresponding program, better Integrated Understanding and grasp Embedded Application technology.
Technical scheme of the present invention is as follows:
A kind of embedded technology experience system, comprise embedded main board, described embedded main board adopts microprocessor Samsung S5PV210, based on CortexTM-A8, the highlyest support 1080p30fps hardware decode video smooth playing, form can be MPEG4, H.263, H.264 etc., run dominant frequency 1GHz, DDR2RAM internal memory 512M, NAND Flash 256M, adopts the arm tiny210 core board of friendliness; LCD adopts technical grade very color 7 cun, resolution 1024*768; Described embedded main board is made up of S5PV210 core board, embedded system power circuit, USB Host and USB Slave interface circuit, embedded system serial port circuit, input/output port control and SD card circuit, the embedded internet control circuit, high resolution audio and video control circuit and resistance and capacitance touch screen control circuit; Wherein, S5PV210 core board controls with embedded system power circuit, USB Host and USB Slave interface circuit, embedded system serial port circuit, input/output port and SD card circuit, the embedded internet control circuit, high resolution audio and video control circuit and resistance and capacitance touch screen control circuit are connected respectively.
The standard interface resource that system has comprises: 1 CMOS camera, 1 miniHDMI high-definition interface, 1 10/100M self-adaptation Ethernet RJ45 interface, 1 road 3.5mm stereo audio output interface, and 1 tunnel inputs at plate microphone, 1 standard SD deck.
The plate that system has carries and namely comprises by resource: 1 wifi, and 1 PWM controls hummer, and 1 adjustable resistance, for ADC conversion testing, 1 plate carries real-time clock reserce cell.
The extended interface resource that system has comprises: 3 DB9 formula RS232 serial ports, 4 road USB Host interfaces, 1 road USB slave interface, and 1 road ADC, 1 road PWM exports, and 16 common GPIO, control as input and output.
The input and output of system adopt modular structure, each module can be spliced arbitrarily, comprises stepper motor module, direct current generator module, LED desk lamp with dimmer switch module, 2 LED seven segment numerical tube modules, fan control module, hummer control module, LED light module, Keysheet module, optical sensor module, Temperature and Humidity module.
The invention also discloses a kind of practical training method based on above-mentioned embedded technology experience system, comprise following methods: method one: use non-OS method, direct control GPIO control register; Method two: write driver, recompilates kernel, uses Qt4.7 application program controlling; Method three: write APP program with esclisp, realizes under Android operation system; Method four: utilize MS eMbedded Visual C++4.0 to programme, realize under Windows CE operating system; Method five: embedded system sets up Websevicer, realizes controlling with browser at host computer; Method six: embedded system sets up Webclient, is directly controlled by the interface of host computer or server; Method seven: the three-decker setting up sensing layer, transport layer, application layer, embedded as gateway by serial ports control Zigbee telegon, then by Zigbee telegon control terminal Zigbee node.
Advantageous Effects of the present invention is:
Experience system of the present invention both can be used as intelligent terminal, can be used for control terminal node, communicate with mobile phone or PC as the Mobile Server end of Internet of Things project again; Present invention encompasses the whole process of embedded product exploitation, include hardware design, the writing of driver, and the process of built-in application program operating system and the multi-platform exploitation program of non-OS.Simultaneously, the input-output device of this experience system is made modular form, each module can be connected by connecting line, in order to simulate the input-output device of various ways, be convenient to combine different application items, not only reduce cost, and conveniently realize multiple real Internet of Things project, strengthen the understanding of student to embedded technology, significantly improve the application power of embedded technology.
The present invention can be applicable to the embedded system course of national Professional resources, and is applied to " embedded system " course of national Internet of Things application technology Professional resources.
Accompanying drawing explanation
Fig. 1 is Embedded System Structure block diagram of the present invention.
Fig. 2 is S5PV210 core board schematic diagram.
Fig. 3 is embedded system power principle figure.
Fig. 4 is USB Host and USB Slave interface principle figure.
Fig. 5 is embedded system serial ports, input/output port controls and SD card schematic diagram.
Fig. 6 is the embedded internet control principle drawing.
Fig. 7 is high resolution audio and video control principle drawing.
Fig. 8 is resistance and capacitance touch screen control principle drawing.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
As shown in Figure 1, Embedded System Structure comprises following components.
(1) embedded main board design, microprocessor Samsung S5PV210, based on CortexTM-A8, the highlyest support 1080p30fps hardware decode video smooth playing, form can be MPEG4, H.263, H.264 etc., dominant frequency 1GHz, DDR2 memory ram 512M is run, NAND Flash 256M, adopts the arm tiny210 core board of friendliness; LCD adopts technical grade very color 7 cun, resolution 1024*768.As shown in Figure 1, the detailed schematic diagram of its each several part is shown in 2 to Fig. 8 to structured flowchart.
(2) standard interface resource: 1 CMOS camera, 1 miniHDMI high-definition interface, 1 10/100M self-adaptation Ethernet RJ45 interface (adopting DM9000AEP), 1 road 3.5mm stereo audio output interface, 1 tunnel inputs at plate microphone, 1 standard SD deck.
(3) plate carries and namely uses resource: 1 wifi, and 1 PWM controls hummer, and 1 adjustable resistance, for ADC conversion testing, 1 plate carries real-time clock reserce cell.
(4) extended interface resource: 3 DB9 formula RS232 serial ports, 4 road USB Host interfaces, 1 road USB slave interface, 1 road ADC, 1 road PWM exports, and 16 common GPIO, control as input and output.
(5) software support: Android 4.0 and following, Linux-2.6.35+Qt4.7, Windows CE6.0.
(6) input/output module open design is spliced arbitrarily, mainly contain: stepper motor module, direct current generator module, LED desk lamp with dimmer switch module, 2 LED seven segment numerical tube modules, fan control module, hummer control module, LED light module, Keysheet module, optical sensor module, Temperature and Humidity module.
(7) annex: 3G module, GPRS module, GPS, wireless router, netting twine, USB flash disk.
(8) power supply input 5V 1.5A, with fusible link protection, produces 3.3V, 1.8V for system.
(9) system experimentation comprises infrastest and Comprehensive Experiment.Infrastest mainly contains non-OS and operating system exploitation.
1. infrastest:
Mainly contain:
I, hardware and corresponding software design
Core board designs, the design of I/O port controlling and programming, writing of I/O port controlling hardware driving, A/D conversion designs and programming, and what A/D conversion hardware drove writes, and USB interface designs, and serial interface design and programming, SD card interface designs.
II, develop based on linux system
Virtual machine, linux system is installed, linux system basic command, and linux system customization and transplanting, Qt4.7 development environment configures, and Qt4.7 commonly uses the use of control, the use of Qt4.7 serial ports, calling of Qt4.7 hardware driving.
III, based on Windows CE system development
The installation of Platform Builder developing instrument, development of customized software kit (SDK), MS eMbedded Visual C++4.0 development environment configures, and hummer is tested, iic bus-temperature experiment, and GPRS tests.
IV, develop based on android system
Android system is installed, and android system customization and transplanting, make and start SD card, the installation of esclipse and use, and LED controls, the collection of illuminance, the use of serial ports, the identification of Quick Response Code.
2. Comprehensive Experiment:
I, simple project:
Network control (CS structure)-embedded system is as Webclient, and computing machine is Websevicer, first sets up network and connects, transmit data by PRS, Wifi or 3G.
Network control (BS structure)-embedded system sets up Websevicer as server, and computing machine or mobile phone transmit data (GPRS, Wifi, 3G) by browser.
Transmitting image and sound.
II, true Internet of Things Project system framework (embedded system is as transport layer):
(zigbee network controls alarm, door lock, curtain to Smart Home-sensing layer, read the data such as intelligent electric meter, humiture, human body infrared), transport layer (the embedded Websevicer that sets up controls zigbee network by telegon), application layer (PC, mobile phone remote are by browser network control).
Foodstuff traceability-sensing layer (reading ultrahigh frequency, high frequency, low-frequency radio frequency card), transport layer (setting up Websevicer, database and interface), application layer (PC, mobile phone remote are controlled by browser requester network).
(zigbee network reads temperature, humidity, surface temperature, soil moisture to wisdom agricultural-sensing layer, illumination, control irrigation system, spray etc.), transport layer (sets up Webclient, control zigbee network by telegon), application layer (set up network as Websevicer to connect, utilize ipad etc. is long-range passes through network control).
Wisdom traffic-transport layer (set up Webclient receiving traffic information, identify traffic lights, automatic parking, video is uploaded), application layer (set up network as Websevicer to connect, utilize PC ipad etc. is long-range passes through network control).
The present invention has following characteristics:
One, Android 4.0 and following operating system is supported, Linux-2.6.35+Qt4.7, Windows CE6.0 operating system.
Two, there is multiple standards interface, if camera, miniHDMI high-definition interface, Ethernet, audio frequency and video, SD card, plate are at Wifi, touch-screen etc., complete and embeddedly enrich function, be beneficial to student and understand Embedded various application.
Three, the present invention has expanded part of interface.As 4 serial ports, 4 USB interface, for external various input-output device, as 3G, GPRS, GPS, intelligent electric meter, Zigbee telegon, keyboard, mouse etc., form comparatively complicated embedded system or Internet of Things project.
Four, simultaneously, external open 18 GPIO interfaces, for the on-off model such as input sensor signal and keyboard, or the PWM output signal such as stepper motor, direct current generator, LED, charactron, relay and hummer.Embedded maximum application is exactly as mobile intelligent terminal, and understand for the ease of more good student and grasp embedded hardware and Software for Design, employing project is teaching, allows student oneself build various application, deepens the understanding to embedded technology.
Five, comparatively complicated to embed the electronic product hardware that is treated to core of declining, the present invention adopts the core board of the arm of friendliness to simplify design, again the design of embedded primary interface circuit is strengthened simultaneously, as the expansion of serial ports, USB interface, the connection of GPIO and various input-output device; The particularly layout of complicated circuit (S5PV210 core board has 178 each pins) principle diagram design and printed board, the process of low-and high-frequency circuit, the isometric design of Network transmission line, better training of students hardware design ability.
Six, various to embed the electronic product software implementation method that is treated to core of declining, practical training method adopts integrated design.As the control (A/D, PWM, serial communication are similar) of LED, method one: use non-OS method, direct control GPIO control register.Method two: write driver, recompilates kernel, uses Qt4.7 application program controlling.Method three: write APP program with esclisp, realizes under Android operation system.Method four: utilize MS eMbedded Visual C++4.0 to programme, realize under Windows CE operating system.Method five (BS structure): embedded system sets up Websevicer, realizes controlling with browser at host computer.Method six (CS structure): embedded system sets up Webclient, is directly controlled by the interface of host computer (server).Method seven: the three-decker setting up sensing layer, transport layer, application layer, embedded as gateway by serial ports control Zigbee telegon, then controlled the method for LED by Zigbee telegon control terminal Zigbee node.Like this, not only grasp the programming of embedded system but also understanding and grasp the framed structure of Internet of Things project, embedded application in Internet of Things project.
Seven, this experience system covers hardware design, the control of work register, driver are write, the exploitation of each platform software, embedded various occasion typical apply case, be multiple functional, the teaching equipment of Instructional Design advanced person.
In sum, the present invention is complicated, powerful to embed the electronic product hardware that is treated to core of declining, the present invention is not only integrated with the common interfaces of embedded system, and serial line interface, USB interface, GPIO interface are expanded, significantly improve Electronics student and design the design circuit of embedded electronic product and draw the ability of printed circuit board.
Input and output adopt modular structure, and Interface of Embedded System is abundant, open, is convenient to form comparatively complicated embedded system or Internet of Things project, embedded Practical training equipment and Internet of Things Practical training equipment is united two into one, has widened range of application of the present invention.
The software simulating platform of embedded intelligent terminal is more, the present invention passes through at different development environment codings, the input/output module of binding modules structure, and the peripheral hardware such as 3G, GPRS, complete respective item, draw inferences about other cases from one instance, rolling is gone forward one by one, improve the student interests of student, allow student grasp embedded intelligent terminal better comprehensively and control and built-in network programming.
Above-described is only the preferred embodiment of the present invention, the invention is not restricted to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive without departing from the spirit and concept in the present invention or associate, all should think and be included within protection scope of the present invention.
Claims (6)
1. an embedded technology experience system, it is characterized in that: comprise embedded main board, described embedded main board adopts microprocessor Samsung S5PV210, based on CortexTM-A8, the highlyest support 1080p30fps hardware decode video smooth playing, form can be MPEG4, H.263, H.264 etc., run dominant frequency 1GHz, DDR2 memory ram 512M, NAND Flash 256M, adopts the arm tiny210 core board of friendliness; LCD adopts technical grade very color 7 cun, resolution 1024*768; Described embedded main board is made up of S5PV210 core board, embedded system power circuit, USB Host and USB Slave interface circuit, embedded system serial port circuit, input/output port control and SD card circuit, the embedded internet control circuit, high resolution audio and video control circuit and resistance and capacitance touch screen control circuit; Wherein, S5PV210 core board controls with embedded system power circuit, USB Host and USB Slave interface circuit, embedded system serial port circuit, input/output port and SD card circuit, the embedded internet control circuit, high resolution audio and video control circuit and resistance and capacitance touch screen control circuit are connected respectively.
2. embedded technology experience system according to claim 1, it is characterized in that, the standard interface resource that system has comprises: 1 CMOS camera, 1 miniHDMI high-definition interface, 1 10/100M self-adaptation Ethernet RJ45 interface, 1 road 3.5mm stereo audio output interface, 1 tunnel inputs at plate microphone, 1 standard SD deck.
3. embedded technology experience system according to claim 1, it is characterized in that, the plate that system has carries and namely comprises by resource: 1 wifi, and 1 PWM controls hummer, and 1 adjustable resistance, for ADC conversion testing, 1 plate carries real-time clock reserce cell.
4. embedded technology experience system according to claim 1, it is characterized in that, the extended interface resource that system has comprises: 3 DB9 formula RS232 serial ports, 4 road USB Host interfaces, 1 road USB slave interface, 1 road ADC, 1 road PWM exports, and 16 common GPIO, control as input and output.
5. embedded technology experience system according to claim 1, is characterized in that: the input and output of system adopt modular structure, and each module can be spliced arbitrarily, comprise stepper motor module, direct current generator module, LED desk lamp with dimmer switch module, 2 LED seven segment numerical tube modules, fan control module, hummer control module, LED light module, Keysheet module, optical sensor module, Temperature and Humidity module.
6. based on a practical training method for embedded technology experience system described in claim 1, it is characterized in that, comprise following methods: method one: use non-OS method, direct control GPIO control register; Method two: write driver, recompilates kernel, uses Qt4.7 application program controlling; Method three: write APP program with esclisp, realizes under Android operation system; Method four: utilize MS eMbedded Visual C++4.0 to programme, realize under Windows CE operating system; Method five: embedded system sets up Websevicer, realizes controlling with browser at host computer; Method six: embedded system sets up Webclient, is directly controlled by the interface of host computer or server; Method seven: the three-decker setting up sensing layer, transport layer, application layer, embedded as gateway by serial ports control Zigbee telegon, then by Zigbee telegon control terminal Zigbee node.
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Application publication date: 20141224 |