CN206574351U - A kind of SCM Based teaching platform - Google Patents
A kind of SCM Based teaching platform Download PDFInfo
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- CN206574351U CN206574351U CN201720001545.3U CN201720001545U CN206574351U CN 206574351 U CN206574351 U CN 206574351U CN 201720001545 U CN201720001545 U CN 201720001545U CN 206574351 U CN206574351 U CN 206574351U
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Abstract
The utility model is related to a kind of SCM Based teaching platform, and it includes single-chip microcomputer main control module, keyboard, power module, on-site programmable gate array FPGA I, on-site programmable gate array FPGA II, LCD display, RS232 buses, synchronous DRAM SDRAM, FLASH internal memory, gpib interface, USB interface, oscillograph, Ethernet interface, signal generator, Signal-regulated kinase, signal acquisition module；The utility model greatly improves the speed of system processing, with abundant on-chip system resource so that peripheral interface control operation is greatly simplified；The hardware of experiment porch is more succinct, and function subdivision is more obvious, and system administration more facilitates；Simplify interface programming so that the on-chip system resource of microprocessor has obtained maximum utilization；Using embedded technology, the design architecture of peripheral system circuit is fairly simple, and design method is relatively fixed, and the integrated level of circuit is higher.
Description
Technical field
The utility model is related to a kind of SCM Based teaching platform, belongs to single chip application field.
Background technology
With the fast development of modern age electronic science and technology, intelligent equipment is continued to bring out in many industries；Science and technology
While these progress are obtained, embedded technology has played vital effect；Just because of the continuous of embedded technology
Popularization is with promoting, just the intellectuality so that the equipment such as various household electrical appliances, mobile phone, Medical Instruments is gradually marched toward, domestic colleges and universities are for sound
The embedded talent that the call of national development talent strategy, especially industry are in short supply is answered, Embedded System Experiment course has been opened up one after another,
But many existing teaching platforms have the defects such as processor processing is slow, hardware interface is numerous and diverse, and extended resources are not enough
It is incomplete with teaching platform function；This is unfavorable for the embedded knowwhy of Students ' Learning, and does not reach exercise student ' progress
Autonomous embedded development ability.
The content of the invention
The development of embedded teaching experiment for convenience, solve present in prior art arithmetic speed is low, interface programming
Complicated the problems such as, the utility model provides a kind of Embedded SCM Based teaching platform, so that the work of exercise student '
Journey development ability, manipulative ability and the ability of practice.
SCM Based teaching platform of the present utility model includes single-chip microcomputer main control module, keyboard, power module, scene
Programmable gate array FPGA I, on-site programmable gate array FPGA II, LCD display, RS232 buses, synchronous dynamic random storage
Device SDRAM, FLASH internal memory, gpib interface, USB interface, oscillograph, Ethernet interface, signal generator, Signal-regulated kinase,
Signal acquisition module；
Described single-chip microcomputer main control module includes arm processor, clock circuit, reset circuit, lcd controller, RS232 strings
Mouth, sdram controller, FLASH controller, GPIB controller, USB controller；Keyboard is connected with arm processor, passes through keyboard
Input and order to arm processor, arm processor connection lcd controller, lcd controller connection LCD display, arm processor leads to
Cross the display work that lcd controller controls LCD；Arm processor is connected to RS232 serial ports, sdram controller, FLASH controls
Device processed, GPIB controller and USB controller, RS232 serial ports are connected with RS232 buses, sdram controller and synchronous dynamic random
Memory storage SDRAM is connected, and FLASH controller is connected with FLASH internal memories, and gpib interface is connected with GPIB controller, USB controller
It is connected by USB interface with oscillograph, USB interface is also associated with change-over circuit, change-over circuit is connected with Ethernet interface；ARM
Processor is respectively with having on-site programmable gate array FPGA I, on-site programmable gate array FPGA II to be connected, field-programmable gate array
Row FPGA I is connected with signal generator, and signal acquisition module passes through Signal-regulated kinase and on-site programmable gate array FPGA II
Connection, the signal that signal acquisition module is obtained is sent to on-site programmable gate array FPGA II after being handled through Signal-regulated kinase,
Arm processor is then forwarded to, clock circuit and reset circuit are connected with arm processor；Power module and single-chip microcomputer master control mould
Block is connected.
Further, the power module has three circuits, respectively provides the circuit of 5V, 3.3V and 1.8V operating voltage,
It is that single-chip microcomputer main control module is powered by power module, three circuits are connected with single-chip microcomputer main control module respectively, wherein, light-emitting diodes
Pipe D3 and D4 indicate respectively the working condition of 1.8V and 3.3V voltages.
The FLASH internal memories are NAND-FLASH internal memories.
In use, can realize communication function between arm processor and data acquisition process part and with keyboard it
Between communication function, can also demonstrate the communication function that USB interface turns Ethernet interface, and the data of demonstration gpib interface are received
Hair experiment etc..
Advantage and beneficial effect of the present utility model are：
The utility model greatly improves the speed of system processing, with abundant on-chip system resource so that periphery connects
Mouth control operation is greatly simplified；The hardware of experiment porch is more succinct, and function subdivision is more obvious, and system administration more facilitates；
Simplify interface programming so that the on-chip system resource of microprocessor has obtained maximum utilization；Using embedded technology,
The design architecture of peripheral system circuit is fairly simple, and design method is relatively fixed, and the integrated level of circuit is higher.
Brief description of the drawings
Fig. 1 is the structural representation of the SCM Based teaching platform of the utility model；
Fig. 2 is the power module circuitry figure of this SCM Based teaching platform, and wherein A figures are for arm processor kernel
Power circuit diagram used；B figures are that C figures are RTC power circuit diagrams for arm processor pin power circuit diagram；
Fig. 3 is the clocking scheme of this SCM Based teaching platform；
Fig. 4 is the reset circuit schematic diagram of this SCM Based teaching platform.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, but protection model of the present utility model
Enclose and be not limited to the content.
Embodiment 1：As shown in Figure 1,2,3, 4, the SCM Based teaching platform of the utility model includes single-chip microcomputer master control
Module, keyboard, power module, on-site programmable gate array FPGA I, on-site programmable gate array FPGA II, LCD display,
RS232 buses, synchronous DRAM SDRAM, FLASH internal memory, gpib interface, USB interface, oscillograph, Ethernet connect
Mouth, signal generator, Signal-regulated kinase, signal acquisition module；
Wherein single-chip microcomputer main control module includes arm processor, clock circuit, reset circuit, lcd controller, RS232 strings
Mouth, sdram controller, FLASH controller, GPIB controller, USB controller；Keyboard is connected with arm processor, arm processor
Lcd controller is connected, lcd controller connection LCD display, arm processor controls LCD display work by lcd controller；
Arm processor is connected to RS232 serial ports, sdram controller, FLASH controller, GPIB controller and USB controller,
RS232 serial ports is connected with RS232 buses, and sdram controller is connected with synchronous DRAM SDRAM, FLASH controller
It is connected with FLASH internal memories, gpib interface is connected with GPIB controller, USB controller is connected by USB interface with oscillograph, USB
Interface is also associated with change-over circuit, and change-over circuit is connected with Ethernet interface, and USB and Ethernet phase are realized by change-over circuit
Mutually conversion；Arm processor is respectively with having on-site programmable gate array FPGA I, on-site programmable gate array FPGA II to be connected, scene
Programmable gate array FPGA I is connected with signal generator, and signal acquisition module passes through Signal-regulated kinase and field programmable gate
Array FPGA II is connected, and the signal that signal acquisition module is obtained is sent to field-programmable gate array after being handled through Signal-regulated kinase
FPGA II is arranged, arm processor is then forwarded to, clock circuit and reset circuit are connected with arm processor；Power module and monolithic
Machine main control module is connected.
Signal acquisition module is various sensor assemblies in the present apparatus, and for obtaining data, the data of acquisition pass through signal
After the processing of conditioning module, transmission is handled into on-site programmable gate array FPGA II, and FPGA I is used for the signal to output
Handled, the signal after processing is exported through signal generator；Keyboard has input control command and the effect set；Single-chip microcomputer
The arm processor of main control module is the control core of device, and clock circuit provides frequency of oscillation, reset circuit for arm processor
For resetting processor；Device controls LCD display work by lcd controller, and single-chip microcomputer main control module is carried
RS232 serial ports is used for connecting RS232 buses, so as to realize the communication of serial ports.The sdram controller that device is carried can be with external same
Step dynamic RAM SDRAM is so as to provide the memory headroom of device, and the FLASH controller that device is carried can be with external NAND
FLASH internal memories, not only increase the speed of service, and can realize the Starting mode by NAND FLASH, enrich study
Content；Device connects USB interface by USB controller, can include output signal on oscillograph, convenient observation, Er Qieke
To pass through change-over circuit（Conventional change-over circuit）, USB interface is converted into Ethernet interface, telecommunication is realized；Device passes through
Gpib interface realizes communication connection, can also be converted to other interface modes by a variety of change-over circuits and equipment, enrich
The content of courses.
Described power module is connected with single-chip microcomputer main control module, and power module has three circuits, respectively provide 5V,
Tri- kinds of operating voltages of 3.3V and 1.8V, are that single-chip microcomputer main control module is powered by power module, wherein, D3 and D4 points of light emitting diode
Not Zhi Shi 1.8V and 3.3V voltages working condition；The connection of single-chip microcomputer main control module and other electronic components is connected by wire
Connect.
This teaching platform is provided with three kinds of operating voltages, respectively 5V, 3.3V and 1.8V, and external is 12V DC voltage-stabilizings electricity
Source, and arm processor need 3.3V and 1.8V operating voltages be on power module change after 5V voltages through BM1117-3.3V
Obtained with BM1117-1.8V, these different voltages will be to arm processor and the power supply of other chips
Energization pins are powered, to ensure that main control module can be with normal work.
In power supply energization pins：3.3V voltages are supplied to MOPVDD, IOVDD, ADCVDD and VCC pin of arm processor
Power supply；1.8V voltages are supplied to the kernel of arm processor to use；RTCVDD is supplied to RTCVDD pins.The two of transformer chip
End has been respectively connected to decoupling capacitor, the interference for removing the noise signal entrained by the power supply of two ends.The supply voltage of RTC circuit
Output RTCVDD will jointly be provided by 1.8V supply voltages and backup battery RT1.
In use, being powered by power module for device, student realizes signal acquisition, processing, analysis, display using this platform
And transmission etc. various hardware connection modes.
Clock circuit module used in this teaching platform uses 12MHz passive crystal oscillator, used in embedded-type ARM microprocessor
Two PLL circuits：ARM_MPLL produces operation MCU clock, and ARM_UPLL produces the clock of operation USB controller.Clock
Circuit can produce CPU calibration sequential, and it is all to use crystal oscillator to generally produce clock frequency, so external 2 22pF
Electric capacity and 32.768KHz crystal oscillator constitute a RTC oscillating circuit.Interface name corresponds to the pin name of arm processor.
Reset circuit used in this teaching platform uses hand-reset mode, using a reset chip 74AHC14, one
Button, 22K Ω resistance, diode 1N4148 and electric capacity realize reset circuit, are realized by ARM_NRST pins to ARM
Manage device jtag interface to reset, the stability of reset signal is greatly improved and reliable using reset chip 74AHC14 and diode
Property, electric capacity is discharged rapidly when declining supply voltage moment, the power supply burr of one fixed width can also make system reliable reset, this
Sample can not only solve power supply burr and cause system unstable, and slowly decline also can reliable reset for power supply.
It is described above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to
In this, any change or replacement expected without creative work should all be covered within protection domain of the present utility model.
Therefore, protection domain of the present utility model should be determined by the scope of protection defined in the claims.
Claims (3)
1. a kind of SCM Based teaching platform, it is characterised in that：Including single-chip microcomputer main control module, keyboard, power module, existing
Field programmable gate array FPGA I, on-site programmable gate array FPGA II, LCD display, RS232 buses, synchronous dynamic random are deposited
Reservoir SDRAM, FLASH internal memory, gpib interface, USB interface, oscillograph, Ethernet interface, signal generator, signal condition mould
Block, signal acquisition module；
Described single-chip microcomputer main control module include arm processor, clock circuit, reset circuit, lcd controller, RS232 serial ports,
Sdram controller, FLASH controller, GPIB controller, USB controller；Keyboard is connected with arm processor, and arm processor connects
Lcd controller is connect, lcd controller connection LCD display, arm processor controls LCD display work by lcd controller；
Arm processor is connected to RS232 serial ports, sdram controller, FLASH controller, GPIB controller and USB controller,
RS232 serial ports is connected with RS232 buses, and sdram controller is connected with synchronous DRAM SDRAM, FLASH controller
It is connected with FLASH internal memories, gpib interface is connected with GPIB controller, USB controller is connected by USB interface with oscillograph, USB
Interface is also associated with change-over circuit, and change-over circuit is connected with Ethernet interface；Arm processor is respectively with there is field-programmable gate array
Row FPGA I, on-site programmable gate array FPGA II are connected, and on-site programmable gate array FPGA I is connected with signal generator, signal
Acquisition module is connected by Signal-regulated kinase with on-site programmable gate array FPGA II, the signal warp that signal acquisition module is obtained
Sent after Signal-regulated kinase processing to on-site programmable gate array FPGA II, be then forwarded to arm processor, clock circuit and
Reset circuit is connected with arm processor；Power module is connected with single-chip microcomputer main control module.
2. SCM Based teaching platform according to claim 1, it is characterised in that：Power module comprising provide 5V,
Three circuits of 3.3V and 1.8V operating voltages, three circuits are connected with single-chip microcomputer main control module respectively.
3. SCM Based teaching platform according to claim 1, it is characterised in that：FLASH internal memories are NAND-
FLASH internal memories.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720001545.3U CN206574351U (en) | 2017-01-03 | 2017-01-03 | A kind of SCM Based teaching platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720001545.3U CN206574351U (en) | 2017-01-03 | 2017-01-03 | A kind of SCM Based teaching platform |
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| CN206574351U true CN206574351U (en) | 2017-10-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109062410A (en) * | 2018-07-28 | 2018-12-21 | 贵州航天天马机电科技有限公司 | A kind of wireless communication man-machine dialogue system system |
| CN111276028A (en) * | 2020-03-20 | 2020-06-12 | 启东计算机厂有限公司 | Novel single-chip microcomputer and configuration comprehensive experiment system |
| CN111768660A (en) * | 2020-06-03 | 2020-10-13 | 北京智趣工场教育科技有限公司 | Programming learning equipment and assembling support thereof |
-
2017
- 2017-01-03 CN CN201720001545.3U patent/CN206574351U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109062410A (en) * | 2018-07-28 | 2018-12-21 | 贵州航天天马机电科技有限公司 | A kind of wireless communication man-machine dialogue system system |
| CN111276028A (en) * | 2020-03-20 | 2020-06-12 | 启东计算机厂有限公司 | Novel single-chip microcomputer and configuration comprehensive experiment system |
| CN111768660A (en) * | 2020-06-03 | 2020-10-13 | 北京智趣工场教育科技有限公司 | Programming learning equipment and assembling support thereof |
| CN111768660B (en) * | 2020-06-03 | 2021-06-25 | 北京智趣工场教育科技有限公司 | Assembly support of programming learning equipment |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 Termination date: 20190103 |