CN206505635U - A kind of one-chip machine experiment platform with two kinds of system expansion interfaces - Google Patents
A kind of one-chip machine experiment platform with two kinds of system expansion interfaces Download PDFInfo
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- CN206505635U CN206505635U CN201621090373.3U CN201621090373U CN206505635U CN 206505635 U CN206505635 U CN 206505635U CN 201621090373 U CN201621090373 U CN 201621090373U CN 206505635 U CN206505635 U CN 206505635U
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Abstract
The utility model is related to a kind of one-chip machine experiment platform with two kinds of system expansion interfaces, including SCM system module, power module, interactive display module, interactively enters module, acquisition module, control module, memory module and AD/DA modules；The SCM system module includes single-chip microcomputer, reset circuit, crystal oscillating circuit, three bus expansion interfaces, I/O pin expansion interface and internal resource interface；Reset circuit output end is connected with single-chip microcomputer, and the output end of crystal oscillating circuit is connected with single-chip microcomputer, and single-chip microcomputer is respectively connected with three bus expansion interfaces, I/O pin expansion interface and internal resource interface.Advantage is：There is provided two kinds of system expansion interfaces：Three bus extensions and I/O pin extension, are conducive to studying SCM system extension and the distribution of profound understanding single-chip microcomputer hardware resource address in depth.Hardware capability is clear, with Functional Design modularization, expansion interface is transparent, the mode of connection is flexible the characteristics of.
Description
Technical field
The utility model belongs to electrical engineering and electronics experiment equipment technical field, more particularly to a kind of with two kinds of systems extensions
The one-chip machine experiment platform of interface.
Background technology
At present, the institution of higher learning of China are designed with single chip madine.In order to preferably learn and put into practice singlechip technology, respectively
Individual universities and colleges have all opened up single chip computer experiment and the teaching of practice.One-chip machine experiment platform is single chip computer experiment and the important religion of practice
Learn equipment.The one-chip machine experiment platform that each universities and colleges uses is developed by single experimental facilities production company mostly, and will place
Reason device core circuit, the function module circuit of all extensions have all been integrated on the circuit board of experiment porch.This kind of single-chip microcomputer is real
Test platform for external resource extension more use fixed mode.On the one hand, it have ignored SCM system extension in single-chip microcomputer
The critical role of technology, is unfavorable for studying in depth for singlechip technology.On the other hand, it to be unfavorable for student total to I/O expansion and three
The understanding of line extension, is particularly disadvantageous for the understanding distributed single-chip microcomputer hardware resource address.In addition, this kind of one-chip machine experiment platform
Hardware aspects are complicated, hardware is opaque, and the connection of hardware circuit can not be understood and learn by causing science.
The content of the invention
To overcome the deficiencies in the prior art, the purpose of this utility model, which is to provide, a kind of has two kinds of system expansion interfaces
One-chip machine experiment platform, using modular construction, facilitates the study of singlechip technology, flexibility is strong.
To achieve the above object, the utility model is achieved through the following technical solutions：
A kind of one-chip machine experiment platform with two kinds of system expansion interfaces, including SCM system module, power module,
Interactive display module, interactively enter module, acquisition module, control module, memory module and AD/DA modules；
The SCM system module includes single-chip microcomputer, reset circuit, crystal oscillating circuit, three bus expansion interfaces, I/O pin
Expansion interface and internal resource interface；Reset circuit output end is connected with single-chip microcomputer, and output end and the single-chip microcomputer of crystal oscillating circuit connect
Connect, single-chip microcomputer is respectively connected with three bus expansion interfaces, I/O pin expansion interface and internal resource interface；
Three bus expansion interfaces of SCM system module and interactive display module, interactively enter module, acquisition module, control
Molding block, memory module, three EBIs of AD/DA modules are connected by winding displacement；The I/O pin of SCM system module expands
Exhibition interface and interactive display module, interactively enter module, acquisition module, the I/O pin interface of control module and connected by Du Pont's line
Connect；Power module is SCM system module, interactive display module, interactively enters module, acquisition module, control module, storage
Device module, AD/DA module for power supply；
The power module includes USB power source, external power supply, switching power supply circuit, 5.0V circuits and 3.3V circuits；USB
One input of the output end connection switching power supply circuit of power supply, the output end connection of external power supply switches the another of power supply circuit
One input, the output end of switching power supply circuit connects the input of 5.0V circuits and 3.3V circuits respectively；
The interactive display module includes charactron circuit, flowing water circuit for lamp, dot matrix circuit and 12864 display circuits；Number
Code pipe circuit, flowing water circuit for lamp, the input of dot matrix circuit and 12864 display circuits are connected to I/O pin interface；Charactron
Circuit, flowing water circuit for lamp, the input of dot matrix circuit and 12864 display circuits are connected to three EBIs；
The module that interactively enters includes Independent keys circuit, matrix keyboard circuit, PC keyboard circuits and infrared remote control electricity
Road；Independent keys circuit, matrix keyboard circuit, the output end of PC keyboard circuits and infrared remote controller are connected to I/O pin and connect
Mouthful；Independent keys circuit, matrix keyboard circuit, the output end of PC keyboard circuits and infrared remote controller are connected to three buses and connect
Mouthful；
The acquisition module include light Acquisition Circuit, DHT11 Acquisition Circuits, sound Acquisition Circuit, raindrop Acquisition Circuit,
Flame Acquisition Circuit and gas Acquisition Circuit；Light Acquisition Circuit, DHT11 Acquisition Circuits, sound Acquisition Circuit, raindrop collection electricity
The output end on road, flame Acquisition Circuit and gas Acquisition Circuit is connected to I/O pin interface；Light Acquisition Circuit, DHT11 are adopted
Collector, sound Acquisition Circuit, raindrop Acquisition Circuit, the output end of flame Acquisition Circuit and gas Acquisition Circuit are connected to three
EBI；
The control module includes buzzer control circuit, control relay circuit, circuit for controlling motor, PWM control electricity
Road, current signal control circuit and Phototube Coupling control circuit；Buzzer control circuit, control relay circuit, motor control
Circuit, pwm control circuit, the input of current signal control circuit and Phototube Coupling control circuit are connected to I/O pin and connect
Mouthful；Buzzer control circuit, control relay circuit, circuit for controlling motor, pwm control circuit, current signal control circuit and
The input of Phototube Coupling control circuit is connected to three EBIs；
The memory module includes ROM circuits, RAM circuit；ROM circuits, RAM circuit are all connected with three EBIs；
The AD/DA modules include ADC0809 circuits and DAC0832 circuits；ADC0809 circuits and DAC0832 circuits with
Three EBIs are all connected with.
Three bus expansion interface includes 16 bit address mouthful, 8 data ports and control mouth.
The I/O pin expansion interface includes P0 mouthfuls, P1 mouthfuls, P2 mouthfuls and P3 mouthfuls.
The internal resource interface includes middle fracture, timing mouth and serial port.
The charactron circuit includes 11 charactrons.
The flowing water circuit for lamp includes the LED that 8 rows 8 are arranged.
The dot matrix circuit is that 16*16 shows dot matrix.
The current signal control circuit includes 4-20mA circuits and 0-20mA circuits.
The matrix keyboard circuit includes the row button of 4 row 3.
The ROM circuits use 8KB and 32KB ROM circuits；The RAM circuit uses 8KB and 32KB RAM circuit.
Compared with prior art, the beneficial effects of the utility model are：
1st, there is provided two kinds of system expansion interfaces：Three bus extensions and I/O pin extension, are conducive to studying single-chip microcomputer in depth
System extends and the distribution of profound understanding single-chip microcomputer hardware resource address.
2nd, hardware capability is clear, with Functional Design modularization, expansion interface is transparent, the mode of connection is flexible the characteristics of.
3rd, the experimental interface of internal resource is both provided, providing the foundation again, abundant and professional extends out resource mould
Block circuit board.
4th, with complete single chip computer experiment hardware, it both can complete the basic experiment of teaching, again can will be many
Individual independent resource, which is combined, integrates complicated experiment.
Brief description of the drawings
Fig. 1 is the utility model general structure block diagram.
Fig. 2 is SCM system module topology figure.
Fig. 3 is power module topological diagram.
Fig. 4 is interactive display module topological diagram.
Fig. 5 is to interactively enter module topology figure.
Fig. 6 is acquisition module topological diagram.
Fig. 7 is control module topological diagram.
Fig. 8 is memory module topological diagram.
Fig. 9 is AD/DA module topology figures.
Embodiment
The utility model is described in detail with reference to Figure of description, it should be noted that of the present utility model
Implementation is not limited to following embodiment.
See Fig. 1, the one-chip machine experiment platform with two kinds of system expansion interfaces, including SCM system module, power supply mould
Block, interactive display module, interactively enter module, acquisition module, control module, memory module and AD/DA modules；Single-chip microcomputer system
Three bus expansion interfaces and the interactive display module of module of uniting, interactively enter module, acquisition module, control module, memory mould
Block, three EBIs of AD/DA modules are connected by winding displacement；The I/O pin expansion interface of SCM system module is with interacting display
Module, interactively enter module, acquisition module, the I/O pin interface of control module and connected by Du Pont's line；Power module is monolithic
Machine system module, interactive display module, interactively enter module, acquisition module, control module, memory module, AD/DA modules supply
Electricity.
SCM system module is the core of this experiment porch, sees Fig. 2, and SCM system module includes single-chip microcomputer, resetted
Circuit, crystal oscillating circuit, three bus expansion interfaces, I/O pin expansion interface and internal resource interface；Reset circuit output end and list
Piece machine is connected, and the output end of crystal oscillating circuit is connected with single-chip microcomputer, single-chip microcomputer and three bus expansion interfaces, I/O pin expansion interface and
Internal resource interface is respectively connected with；Three bus expansion interfaces include 16 bit address mouthful, 8 data ports and control mouth, I/O pin
Expansion interface includes P0 mouthfuls, P1 mouthfuls, P2 mouthfuls and P3 mouthfuls, and internal resource interface includes middle fracture, timing mouth and serial port.
In SCM system module, single-chip microcomputer uses STC89C54 chips, and reset circuit has two kinds of upper electricity and button multiple
Position circuit-mode, crystal oscillating circuit uses 12MHz and two kinds of 11.0592MHz；16 bit address mouthful of three bus expansion interfaces are by monolithic
The P2 mouths of machine and constituted by P0 mouths latched, 8 data ports are made up of the P0 mouths of single-chip microcomputer, control mouth by single-chip microcomputer P1 with
P3 mouthfuls of compositions；I/O pin expansion interface is made up of tetra- 8 bit ports of P0, P1, P2 and P3 of single-chip microcomputer；Internal resource interface is provided
2 interrupt interfaces, 2 clocked interfaces and 1 serial line interface, interruption and clocked interface can provide pulse signal by outside, serially
Mouth can be connected with outside PC or other serial devices.
Power module provides power supply for whole experiment porch, sees Fig. 3, and power module includes USB power source, external power supply, cut
Change power supply, 5.0V circuits and 3.3V circuits；One input of the output end connection switching power supply of USB power source, external power supply
Another input of output end connection switching power supply, the output end of switching power supply connects 5.0V circuits and 3.3V circuits respectively
Input；Two kinds of power supply modes of power module USB power source and external power supply, cutting for mode is powered using switching power supply circuit
Change, 5V circuits use LM2596-5 devices, 3.3V circuits use LM2596-3.3 devices.
Interactive display module is the display device of this experiment porch, sees Fig. 4, interactive display module include charactron circuit,
Flowing water circuit for lamp, dot matrix circuit and 12864 display circuits；Charactron circuit, flowing water circuit for lamp, dot matrix circuit and 12864 displays
The input of circuit is connected to I/O pin interface；Charactron circuit, flowing water circuit for lamp, dot matrix circuit and 12864 display circuits
Input be connected to three EBIs；Charactron circuit includes 11 common cathode charactrons, and flowing water circuit for lamp uses 8 rows 8
The LED of row, dot matrix circuit shows dot matrix using 16*16, and 12864 display circuits use the liquid crystal display of 12864 models；Interaction is aobvious
Show that all circuits in module all provide two kinds of system expansion interfaces：Three EBIs and I/O pin interface.
The input equipment that module is this experiment porch is interactively entered, Fig. 5 is seen, interactively entering module includes Independent keys electricity
Road, matrix keyboard circuit, PC keyboard circuits and infrared remote controller；Independent keys circuit, matrix keyboard circuit, PC keyboard circuits
I/O pin interface is connected to the output end of infrared remote controller；Independent keys circuit, matrix keyboard circuit, PC keyboard circuits
Three EBIs are connected to the output end of infrared remote controller；Independent keys circuit provides 6 independent switches, matrix
Keyboard circuit includes the row button of 4 row 3, and PC keyboard circuits provide the PC mouths that can be connected with PC keyboards, and infrared remote controller is adopted
With the integral tube HS0038 of infrared signal can be received；Interactively enter the circuit in module and two kinds of system expansion interfaces are all provided：Three
EBI and I/O pin interface.
Acquisition module is the input pickup equipment that this experiment porch is extended out, and sees Fig. 6, and acquisition module includes light and gathers electricity
Road, DHT11 Acquisition Circuits, sound Acquisition Circuit, raindrop Acquisition Circuit, flame Acquisition Circuit and gas Acquisition Circuit；Light is adopted
Collector, DHT11 Acquisition Circuits, sound Acquisition Circuit, raindrop Acquisition Circuit, flame Acquisition Circuit and gas Acquisition Circuit it is defeated
Go out end and be connected to I/O pin interface；Light Acquisition Circuit, DHT11 Acquisition Circuits, sound Acquisition Circuit, raindrop Acquisition Circuit,
The output end of flame Acquisition Circuit and gas Acquisition Circuit is connected to three EBIs；Light Acquisition Circuit passes through photo resistance
The data signal of light intensity is gathered with A/D circuits, DHT11 circuits realize the collection of temperature and humidity by DHT11 sensors,
Sound Acquisition Circuit gathers digital switch quantity signal by microphone and A/D circuits, and raindrop Acquisition Circuit passes through Raindrop sensor
The data signal of raindrop amount size is gathered with A/D circuits, flame Acquisition Circuit gathers flame by flame sensor and A/D circuits
The data signal of light and shade, gas collecting circuit gathers the data signal of concentration of natural gas by MQ-4 sensors and A/D circuits；Adopt
Circuit in collection module all provides two kinds of system expansion interfaces：Three EBIs and I/O pin interface.
Control module is the output transducer equipment that this experiment porch is extended out, and sees Fig. 7, and control module is controlled including buzzer
Circuit, control relay circuit, circuit for controlling motor, pwm control circuit, current signal control circuit and Phototube Coupling control electricity
Road；Buzzer control circuit, control relay circuit, circuit for controlling motor, pwm control circuit, current signal control circuit and
The input of Phototube Coupling control circuit is connected to I/O pin interface；Buzzer control circuit, control relay circuit, motor
Control circuit, pwm control circuit, current signal control circuit and Phototube Coupling control the input of circuit to be connected to three buses
Interface；Buzzer circuit drives buzzer using 8050 triodes, and relay circuit uses the relay of JQC-3FF models, electricity
Machine control circuit uses ULN2003 chip drives stepper motors, and pwm control circuit uses NE555 timer chips, current signal
Control circuit realizes 4-20mA, 0-20mA signal, light using transmitting module ISO D2-P3-O1-Q01, ISO D2-P3-O2-Q01
It is electrically isolated control circuit and controllable photoelectric isolating circuit is realized using TL521-4；Circuit in control module all provides two germlines
System expansion interface：Three EBIs and I/O pin interface.
Memory module provides the storage device extended out for this experiment porch, sees Fig. 8, memory module include ROM circuits,
RAM circuit；ROM circuits, RAM circuit are all connected with three EBIs；ROM circuits use 8KB and 32KB ROM, model
2764 and 27256；RAM circuit uses 8KB and 32KB RAM, model 6264 and 62256；Memory module uses three buses
Interface.
AD/DA modules are the modulus/digital-to-analogue conversion equipment of this experiment porch, see Fig. 9, and AD/DA modules include ADC0809 electricity
Road and DAC0832 circuits；ADC0809 circuits and DAC0832 circuits are all connected with three EBIs；ADC0809 circuits provide 8 tunnels
Analog quantity channel interface, DAC0832 circuits provide analog output test interface.
Claims (10)
1. a kind of one-chip machine experiment platform with two kinds of system expansion interfaces, including SCM system module, power module, friendship
Mutual display module, interactively enter module, acquisition module, control module, memory module and AD/DA modules；
Characterized in that, the SCM system module include single-chip microcomputer, reset circuit, crystal oscillating circuit, three bus expansion interfaces,
I/O pin expansion interface and internal resource interface；Reset circuit output end is connected with single-chip microcomputer, the output end and list of crystal oscillating circuit
Piece machine is connected, and single-chip microcomputer is respectively connected with three bus expansion interfaces, I/O pin expansion interface and internal resource interface；
Three bus expansion interfaces of SCM system module and interactive display module, interactively enter module, acquisition module, control mould
Block, memory module, three EBIs of AD/DA modules are connected by winding displacement；The I/O pin extension of SCM system module connects
Mouthful with interactive display module, interactively enter module, acquisition module, control module I/O pin interface be connected by Du Pont's line；Electricity
Source module is SCM system module, interactive display module, interactively enters module, acquisition module, control module, memory mould
Block, AD/DA module for power supply；
The power module includes USB power source, external power supply, switching power supply circuit, 5.0V circuits and 3.3V circuits；USB power source
Output end connection switching power supply circuit an input, external power supply output end connection switching power supply circuit another
Input, the output end of switching power supply circuit connects the input of 5.0V circuits and 3.3V circuits respectively；
The interactive display module includes charactron circuit, flowing water circuit for lamp, dot matrix circuit and 12864 display circuits；Charactron
Circuit, flowing water circuit for lamp, the input of dot matrix circuit and 12864 display circuits are connected to I/O pin interface；Charactron circuit,
The input of flowing water circuit for lamp, dot matrix circuit and 12864 display circuits is connected to three EBIs；
The module that interactively enters includes Independent keys circuit, matrix keyboard circuit, PC keyboard circuits and infrared remote controller；Solely
The output end for founding key circuit, matrix keyboard circuit, PC keyboard circuits and infrared remote controller is connected to I/O pin interface；Solely
The output end for founding key circuit, matrix keyboard circuit, PC keyboard circuits and infrared remote controller is connected to three EBIs；
The acquisition module includes light Acquisition Circuit, DHT11 Acquisition Circuits, sound Acquisition Circuit, raindrop Acquisition Circuit, flame
Acquisition Circuit and gas Acquisition Circuit；Light Acquisition Circuit, DHT11 Acquisition Circuits, sound Acquisition Circuit, raindrop Acquisition Circuit,
The output end of flame Acquisition Circuit and gas Acquisition Circuit is connected to I/O pin interface；Light Acquisition Circuit, DHT11 collection electricity
Road, sound Acquisition Circuit, raindrop Acquisition Circuit, the output end of flame Acquisition Circuit and gas Acquisition Circuit are connected to three buses
Interface；
The control module includes buzzer control circuit, control relay circuit, circuit for controlling motor, pwm control circuit, electricity
Flow signal control circuit and Phototube Coupling control circuit；Buzzer control circuit, control relay circuit, circuit for controlling motor,
The input of pwm control circuit, current signal control circuit and Phototube Coupling control circuit is connected to I/O pin interface；Buzzing
Device control circuit, control relay circuit, circuit for controlling motor, pwm control circuit, current signal control circuit and Phototube Coupling
The input of control circuit is connected to three EBIs；
The memory module includes ROM circuits, RAM circuit；ROM circuits, RAM circuit are all connected with three EBIs；
The AD/DA modules include ADC0809 circuits and DAC0832 circuits；ADC0809 circuits and DAC0832 circuits and three total
Line interface is all connected with.
2. a kind of one-chip machine experiment platform with two kinds of system expansion interfaces according to claim 1, it is characterised in that
Three bus expansion interface includes 16 bit address mouthful, 8 data ports and control mouth.
3. a kind of one-chip machine experiment platform with two kinds of system expansion interfaces according to claim 1, it is characterised in that
The I/O pin expansion interface includes P0 mouthfuls, P1 mouthfuls, P2 mouthfuls and P3 mouthfuls.
4. a kind of one-chip machine experiment platform with two kinds of system expansion interfaces according to claim 1, it is characterised in that
The internal resource interface includes middle fracture, timing mouth and serial port.
5. a kind of one-chip machine experiment platform with two kinds of system expansion interfaces according to claim 1, it is characterised in that
The charactron circuit includes 11 charactrons.
6. a kind of one-chip machine experiment platform with two kinds of system expansion interfaces according to claim 1, it is characterised in that
The flowing water circuit for lamp includes the LED that 8 rows 8 are arranged.
7. a kind of one-chip machine experiment platform with two kinds of system expansion interfaces according to claim 1, it is characterised in that
The dot matrix circuit is that 16*16 shows dot matrix.
8. a kind of one-chip machine experiment platform with two kinds of system expansion interfaces according to claim 1, it is characterised in that
The current signal control circuit includes 4-20mA circuits and 0-20mA circuits.
9. a kind of one-chip machine experiment platform with two kinds of system expansion interfaces according to claim 1, it is characterised in that
The matrix keyboard circuit includes the row button of 4 row 3.
10. a kind of one-chip machine experiment platform with two kinds of system expansion interfaces according to claim 1, its feature exists
In the ROM circuits use 8KB and 32KB ROM circuits；The RAM circuit uses 8KB and 32KB RAM circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621090373.3U CN206505635U (en) | 2016-09-29 | 2016-09-29 | A kind of one-chip machine experiment platform with two kinds of system expansion interfaces |
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| CN201621090373.3U CN206505635U (en) | 2016-09-29 | 2016-09-29 | A kind of one-chip machine experiment platform with two kinds of system expansion interfaces |
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| CN206505635U true CN206505635U (en) | 2017-09-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116030691A (en) * | 2023-03-24 | 2023-04-28 | 江西工业职业技术学院 | Singlechip experimental system and experimental method thereof |
-
2016
- 2016-09-29 CN CN201621090373.3U patent/CN206505635U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116030691A (en) * | 2023-03-24 | 2023-04-28 | 江西工业职业技术学院 | Singlechip experimental system and experimental method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170919 Termination date: 20200929 |
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| CF01 | Termination of patent right due to non-payment of annual fee |