CN109767669A - A kind of intelligent digital electronics synthesis experience system - Google Patents
A kind of intelligent digital electronics synthesis experience system Download PDFInfo
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- CN109767669A CN109767669A CN201910191781.XA CN201910191781A CN109767669A CN 109767669 A CN109767669 A CN 109767669A CN 201910191781 A CN201910191781 A CN 201910191781A CN 109767669 A CN109767669 A CN 109767669A
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Abstract
A kind of intelligent digital electronics synthesis experience system, belong to electronic instruction equipment technical field, it is connected and composed by 23 circuit modules, it is integrated with the digital programmable device of new device and high frequency large capacity and more ports I/O, superior performance, flexible operation, easy to maintain, strong antijamming capability provide strong guarantee for the practical teachings such as Modern digital electronic technology and digital Programmable Technology experiment, Course Exercise, innovative design and technological development and research.Pass through the effect of each circuit module, it can produce the pulse signal of various frequencies, it is able to achieve modulus serial conversion, it is able to achieve digital-to-analogue conversion and numerical control amplification, various information is able to achieve and shows, be able to achieve timing controlled and warning function, it is able to achieve the Digital Logic and single-chip microcontroller in-system programmable components of large capacity, both it live real training research can be carried out, can also realize long-range real training research by cable, the further satisfaction demand of Modern digital electronic technique teaching.
Description
Technical field
The invention belongs to electronic instruction equipment technical fields, are related to a kind of intelligent digital electronics synthesis experience system, specifically
Say be related to it is a kind of for telecommunications, communication, electrically, Internet of Things, intelligence, automation, observing and controlling, the relevant specialities such as electromechanical integration
Experiment and design Practical Training Teaching-Platform, be for carry out hierarchy type practical teaching, Opening Practice Teaching, improve student practice
The Modern digital electronic comprehensive training system of manipulative ability, innovation ability and solidarity and cooperation ability.
Background technique
As the continuous development of China's macroeconomic situation and the high speed of scientific and technological level are promoted, for electronics in talents market
The demand of electrician specialty technician is riseing year by year, at the same time, for the comprehensive element of the electron and electrician profession aspect talent
Matter requires also to become higher and higher, and the relatively weak technician of same ability is no longer satisfied major business unit in society
The requirement of post condition, just need institution of higher learning to reinforce real training educational work for student at school in face of this status, for society
Cultivate the high-end technology talent of large quantities of high-quality electron and electrician professions.
Currently, the professions such as telecommunications, communication, electrical, Internet of Things, intelligence, automation, observing and controlling, electromechanical integration in each universities and colleges
In correlated curriculum be required to carry out practice-training teaching, and current training teaching system and EDA system is mainly partial to general number
The simple use of word integrated circuit and programming device, the integrated application face of digital integrated electronic circuit is not wide, patrols digital programmable
It collects and the integrated application of single-chip microcontroller is paid little attention to, without the application of high frequency large capacity and the programmable logic device of more ports I/O；
There is no large area autonomic function Wiring area；Connection between circuit function module is not flexible；The function limitation that circuit is realized is very big；
Can only field experiment, there is no tele-experimentation function；It is low using safety coefficient, high failure rate, it has not been convenient to and mostly without Anti-interference Design,
Hinder the implementation of hierarchy type practical teaching, Opening Practice Teaching, be not able to satisfy student's practical competence, innovation ability and
The requirement of solidarity and cooperation ability.
Summary of the invention
The purpose of the present invention is in view of the deficiency of the prior art, propose a kind of intelligent digital electronics synthesis real training system
System, integrates the digital programmable device of new device and high frequency large capacity and more ports I/O, superior performance, flexible operation are easy to tie up
Shield, strong antijamming capability are Modern digital electronic technology and digital Programmable Technology experiment, Course Exercise, innovative design and skill
The practical teachings such as art exploitation and research provide strong guarantee, can both carry out live real training research, can also realize long-range behaviour
Make, the further satisfaction demand of Modern digital electronic technique teaching.
The technical scheme is that a kind of intelligent digital electronics synthesis experience system, including power circuit block；It is special
Sign is: the electronics synthesis experience system is also by level generation circuit module, single and HEX signal generating circuit module, mould
Number parallel change-over circuit module, keyboard signal generation circuit module, pulse generation and frequency dividing circuit module, 555 pulse adjustable electrics
Road module, modulus serial conversion circuit module, digital programmable circuit module, power-down protection circuit module, 50MHz pulse generation
Device, power-switching circuit module, tele-experimentation interface module, single-chip microcontroller minimal application system circuit module, AD7520 number
Mould conversion and digital-control amplifier, LCD1602 liquid crystal display circuit module, level sensitive circuit module, digital pipe display circuit mould
Block, relay buzzer, amplification driving circuit module, LED lattice display circuit module, tele-experimentation circuit module and free electricity
Road Wiring area connects and composes.
The level generation circuit module, single and HEX signal generating circuit module, modulus parallel change-over circuit module,
The level and pulse signal that pulse generation and frequency dividing circuit module, 555 pulse conditioned circuit modules issue are connected to the number
The input terminal of programmed circuit module, single-chip microcontroller minimal application system circuit module and free circuit connection area；The level generates
The level signal of circuit module output is connected to the input terminal of AD7520 digital-to-analogue conversion and digital-control amplifier；The keyboard signal produces
Raw circuit module is bi-directionally connected with digital programmable circuit module, the formation of single-chip microcontroller minimal application system circuit module respectively；It is described
The digital signal that modulus serial conversion circuit module issues is connected to digital programmable circuit module, single-chip microcontroller minimal application system electricity
The output end of road module；The power-down protection circuit module output is connected to digital programmable circuit module to realize power down protection function
Energy；The 50MHz impulse generator output is connected to digital programmable circuit module to provide pulse signal；The power supply conversion electricity
Module output in road is connected to digital programmable circuit module to provide working power；The single-chip microcontroller minimal application system circuit module
Digital output signal be connected to LCD1602 liquid crystal display circuit module, level sensitive circuit module, digital pipe display circuit mould
The input terminal of block；The digital output signal of the digital programmable circuit module is connected to AD7520 digital-to-analogue conversion and numerical control amplification
Device, LCD1602 liquid crystal display circuit module, level sensitive circuit module, digital pipe display circuit module, relay buzzer,
Amplification driving circuit module, LED lattice display circuit module, tele-experimentation circuit module input terminal；The tele-experimentation electricity
The digital signal level of road module is connected to the input terminal of tele-experimentation interface module；The tele-experimentation interface circuit mould
The output end of block is connected to the input terminal of digital programmable circuit module；The output end of the digital programmable circuit module is connected to far
The input terminal of journey experiment circuit module；The output end in the free circuit connection area is connected to digital programmable circuit module, level
The input terminal of detection circuit module, digital pipe display circuit module；The power circuit block is connected to the defeated of each circuit module
Enter end, to provide working power for each circuit module.
The output of the digital programmable circuit module, single-chip microcontroller minimal application system circuit module is sent to keyboard signal generation
Circuit module row scan input end, the output of keyboard signal generation circuit module column are sent to digital programmable circuit module, single-chip microcontroller most
The input terminal of small application system circuit module, when keyboard signal generation circuit module difference with digital programmable circuit module, monolithic
Machine minimal application system circuit module is connected.
The input and output of each circuit module pass through short circuit cap switching selection there are port, between each circuit module
Secondary flexible connection circuit is convenient in connection, avoids device pin not enough and the phase between input and input, input and output
Mutually interference.
In the digital programmable circuit module programming device programming, use I/O mouthfuls as input and output；To single-chip microcontroller
Mcu programming in minimal application system circuit module, use its P mouthfuls as input and output.
EP3C10E144C8 programming device is used in the digital programmable circuit module, carries out JTAG10 core programming port；Fall
Electric protection circuit module is automatically configured after being re-energised using power down protection device EPCS4 to EP3C10E144C8 device；50MHz
Impulse generator generates the pulse signal of 50MHz using 50MHz crystal oscillator module, is supplied to EP3C10E144C8 device；Power supply turns
Circuit module is changed+5V voltage is converted to+2.5V voltage using K3C5B and+5V voltage is converted to+3.3V electricity using 16263S
Press the working power as EP3C10E144C8 device；Tele-experimentation interface module is constituted with electronic switch CD4066, K1
~K8 is control input, and D1~D8 is numeral output.
The single-chip microcontroller minimal application system circuit module is answered with the singlechip group of AT89S series or STC series at minimum
Use circuit system.
The LED lattice display circuit module uses 48 × 8 LED dot matrix, and model SZ411288 is arranged using common cathode
Scanning mode work, is connect by amplification driving circuit with programming device.
The amplification driving circuit module uses common cathode column scan, and column scan signal is connected to 8050 triodes, and row signal connects
To 8550 triodes, ranks signal is taken from programming device EP3C10E144C8.
The digital pipe display circuit module totally 4,2 band decodings, 2 without decoding, 2 charactron numbers with decoding
According to end with selection short circuit cap, 4 are not only able to achieve static status display, but also are able to achieve dynamic scanning displaying；It is selected by setting data
Device can also be achieved 4 or more static status displays.
The tele-experimentation circuit module by network module, single-chip microcontroller, memory, network transformer, electrical level transferring chip,
Memory and programmable chip connect and compose；Network module is RTL8019AS, utilizes RTL8019AS 10M ISA network card chip
Access network based on ethernet realizes the communication of single-chip microcontroller and internet cloud；Single-chip microcontroller is W78E58B, the function of control network module online
Can, and communicated with PC machine, complete related commissioning function；Memory is 93C46, stores the related data of network module, is read
Take the MAC Address of network interface card；Memory is 24C02, with cooperate single-chip microcontroller store power down before need data to be saved, be also used for simultaneously
Store some settings of user；Network transformer is 20F-01, keeps transmission range farther to enhance signal, enhances anti-interference energy
Power protects chip；Electrical level transferring chip is MAX232, to complete the mutual conversion of Transistor-Transistor Logic level Yu RS-232 level, realizes monolithic
The communication of machine and PC machine；Memory is 62256, to improve the data transmission bauds of single-chip microcontroller, handles complicated TCP/IP；It can compile
Journey chip is 8255A, to connect single-chip microcontroller and experimental box, realizes long-range control of the single-chip microcontroller to experimental box.
The invention has the benefit that a kind of intelligent digital electronics synthesis experience system provided by the invention, by power supply electricity
Road module, level generation circuit module, single and HEX signal generating circuit module, modulus parallel change-over circuit module, keyboard letter
Number generation circuit module, pulse generation and frequency dividing circuit module, 555 pulse conditioned circuit modules, modulus serial conversion circuit mould
Block, digital programmable circuit module, power-down protection circuit module, 50MHz impulse generator, power-switching circuit module, long-range reality
Test interface module, single-chip microcontroller minimal application system circuit module, AD7520 digital-to-analogue conversion and digital-control amplifier, LCD1602
Liquid crystal display circuit module, level sensitive circuit module, digital pipe display circuit module, relay buzzer, amplification driving electricity
Road module, LED lattice display circuit module, tele-experimentation circuit module and free circuit connection area connect and compose, and are integrated with new
The digital programmable device of device and high frequency large capacity and more ports I/O, it is superior performance, flexible operation, easy to maintain, anti-interference
Ability is strong, is that Modern digital electronic technology and digital Programmable Technology experiment, Course Exercise, innovative design and technological development etc. are real
It tramples teaching and research provides strong guarantee, by the effect of each circuit module, can produce the pulse letter of various frequencies
Number, it is able to achieve modulus serial conversion, digital-to-analogue conversion and numerical control amplification is able to achieve, is able to achieve various information and shows, be able to achieve timing
Control and warning function, the digital logic functions for being able to achieve large capacity and more ports I/O are programmable, can both carry out live real training and grind
Study carefully, can also realize remote operation, the further satisfaction demand of Modern digital electronic technique teaching.
Detailed description of the invention
Fig. 1 is present system module connection structure schematic diagram.
Fig. 2 is level generation circuit module composition schematic diagram in the present invention.
Fig. 3 is single and HEX signal generating circuit module composition schematic diagram in the present invention.
Fig. 4 is modulus parallel change-over circuit module composition schematic diagram in the present invention.
Fig. 5 is keyboard signal generation circuit module composition schematic diagram in the present invention.
Fig. 6 is pulse generation and frequency dividing circuit module composition schematic diagram in the present invention.
Fig. 7 is 555 pulse conditioned circuit module composition schematic diagrames in the present invention.
Fig. 8 is modulus serial conversion circuit module composition schematic diagram in the present invention.
Fig. 9 is that medium-long range experimental interface circuit module of the present invention constitutes schematic diagram.
Figure 10 is AD7520 digital-to-analogue conversion and digital-control amplifier circuit diagram in the present invention.
Figure 11 is LCD1602 liquid crystal display circuit module composition schematic diagram in the present invention.
Figure 12 is level sensitive circuit module composition schematic diagram in the present invention.
Figure 13 is digital pipe display circuit module composition schematic diagram in the present invention.
Figure 14 is relay buzzer circuit schematic diagram in the present invention.
Figure 15 is amplification driving circuit module composition schematic diagram in the present invention.
Figure 16 is that medium-long range experiment circuit module of the present invention constitutes schematic diagram.
Figure 17 is medium-long range experimental circuit wiring schematic diagram of the present invention.
In figure: level generation circuit module 1, single and HEX signal generating circuit module 2, modulus parallel change-over circuit mould
Block 3, keyboard signal generation circuit module 4, pulse generation and frequency dividing circuit module 5,555 pulse conditioned circuit modules 6, modulus string
Row conversion circuit module 7, digital programmable circuit module 8, power-down protection circuit module 9,50MHz impulse generator 10, power supply turn
Circuit module 11, tele-experimentation interface module 12, single-chip microcontroller minimal application system circuit module 13, AD7520 digital-to-analogue is changed to turn
It changes and digital-control amplifier 14, LCD1602 liquid crystal display circuit module 15, level sensitive circuit module 16, digital pipe display circuit
Module 17, relay buzzer 18, amplification driving circuit module 19, LED lattice display circuit module 20, tele-experimentation circuit mould
Block 21, power circuit block 22, free circuit connection area 23.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing:
As shown in Figure 1, a kind of intelligent digital electronics synthesis experience system, including power circuit block 22；Electronics synthesis is real
Exercising system also by level generation circuit module 1, single and HEX signal generating circuit module 2, modulus parallel change-over circuit module 3,
Keyboard signal generation circuit module 4, pulse generation and frequency dividing circuit module 5,555 pulse conditioned circuit modules 6, modulus serially turn
Change circuit module 7, digital programmable circuit module 8, power-down protection circuit module 9,50MHz impulse generator 10, power supply conversion electricity
Road module 11, tele-experimentation interface module 12, single-chip microcontroller minimal application system circuit module 13, AD7520 digital-to-analogue conversion and
Digital-control amplifier 14, LCD1602 liquid crystal display circuit module 15, level sensitive circuit module 16, digital pipe display circuit module
17, relay buzzer 18, amplification driving circuit module 19, LED lattice display circuit module 20, tele-experimentation circuit module 21
It is connected and composed with free circuit connection area 23.
As shown in Figure 1, a kind of intelligent digital electronics synthesis experience system, level generation circuit module 1, single and HEX letter
Number generation circuit module 2, modulus parallel change-over circuit module 3, pulse generation and frequency dividing circuit module 5,555 pulse conditioned circuits
The level and pulse signal that module 6 issues are connected to digital programmable circuit module 8, single-chip microcontroller minimal application system circuit module 13
With the input terminal in free circuit connection area 23；The level signal that level generation circuit module 1 exports is connected to AD7520 digital-to-analogue and turns
It changes and the input terminal of digital-control amplifier 14；Keyboard signal generation circuit module 4 respectively with digital programmable circuit module 8, single-chip microcontroller
The formation of minimal application system circuit module 13 is bi-directionally connected；The digital signal that modulus serial conversion circuit module 7 issues is connected to
The output end of digital programmable circuit module 8, single-chip microcontroller minimal application system circuit module 13；Power-down protection circuit module 9 exports
Digital programmable circuit module 8 is connected to realize power-down protection；The output of 50MHz impulse generator 10 is connected to digital programmable
Circuit module 8 is to provide pulse signal；The output of power-switching circuit module 11 is connected to digital programmable circuit module 8 to provide work
Make power supply；The digital output signal of single-chip microcontroller minimal application system circuit module 13 is connected to LCD1602 liquid crystal display circuit mould
The input terminal of block 15, level sensitive circuit module 16, digital pipe display circuit module 17；The number of digital programmable circuit module 8
Output signal is connected to AD7520 digital-to-analogue conversion and digital-control amplifier 14, LCD1602 liquid crystal display circuit module 15, level detection
Circuit module 16, digital pipe display circuit module 17, relay buzzer 18, amplification driving circuit module 19, LED lattice display
The input terminal of circuit module 20, tele-experimentation circuit module 21；The digital signal level of tele-experimentation circuit module 21 is connected to
The input terminal of tele-experimentation interface module 12, the output end of tele-experimentation interface module 12 are connected to digital programmable electricity
The input terminal of road module 8；The output end of digital programmable circuit module 8 is connected to the input terminal of tele-experimentation circuit module 21；From
Digital programmable circuit module 8, level sensitive circuit module 16, numeral method electricity are connected to by the output end in circuit connection area 23
The input terminal of road module 17；Power circuit block 22 is connected to the input terminal of each circuit module, to provide work for each circuit module
Make power supply.
As shown in Fig. 2, a kind of intelligent digital electronics synthesis experience system, level generation circuit module, the circuit are number
Circuit provides the high and low level signal in 12 roads, and toggle switch P issues high level upwards, and P issues downwards low level.
As shown in figure 3, a kind of intelligent digital electronics synthesis experience system, single and HEX signal generating circuit module, are often pressed
No. 1 button, single pulse export 1 negative pulse, and HEX (4 2 systems) output adds 1, and U0 is gate circuit 74LS00 in figure, and U1 is
Counter 74LS161.For being engaged in independent experiment research, Transistor-Transistor Logic level signal can also be provided for other digital circuits.
As shown in figure 4, a kind of intelligent digital electronics synthesis experience system, modulus parallel change-over circuit module can will be simulated
Amount is converted to 8 parallel-by-bit digital quantities, when switch K1 is closed, and K2 is disconnected, can only convert unipolarity analog quantity；It is disconnected in switch K1
It opens, when K2 is closed, switched bipolar analog quantity；U2 is that ADC0804 is connected with programming device, is turned by programming device control
It changes, realizes data acquisition and the functions such as Non-Electricity Measurement and automatic control.
As shown in figure 5, a kind of intelligent digital electronics synthesis experience system, keyboard signal generation circuit module, are determined by keyboard
Adopted input signal realizes keypress function.In actual use, usual row H1, H2, H3, H4 connect input scanning signal；Column L1, L2,
L3, L4 export keyboard signal.The function of each key of 0--F is determined by software programming.This system keyboard is arranged to and monolithic, number
Word programs chip connection.
As shown in fig. 6, a kind of intelligent digital electronics synthesis experience system, pulse generation and frequency dividing circuit module, by 8MHz
2 and 10 frequency dividing circuits that crystal oscillator is constituted, can export the pulse signal of several frequencies, and U3 is phase inverter 74LS04 in figure；U4 is D
Trigger 74LS74 is used as 2 frequency dividings；U5 is 10 system Counter 74LS390, is used as 10 frequency dividings.For being engaged in independent reality
Research is tested, TTL pulse signal can also be provided for other digital circuits.
As shown in fig. 7, a kind of intelligent digital electronics synthesis experience system, 555 pulse conditioned circuit modules, U6 NE555
Timing circuit, exportable TTL pulse signal, RW1 are used for pulse-width regulated, and RW2 is adjusted for frequency, the capacitor of 47uF and 510pF
Low-frequency range and high band output are controlled respectively.For being engaged in independent experiment research, TTL pulse can also be provided for other digital circuits
Signal.
As shown in figure 8, a kind of intelligent digital electronics synthesis experience system, modulus serial conversion circuit module, U7
(ADC0832) analog-digital converter is exported for 8 Bits Serials.Under normal circumstances, ADC0832 and single-chip microcontroller, digital programmable device connect
Mouth is 4 data lines, is respectivelyCLK, DO, DI, but since the end DO is not effective simultaneously when communicating with the end DI, and with
The interface of EP3C10E144C8 is two-way, so can be connected in parallel at the end DO in a data wire with the end DI when circuit design makes
With.
As shown in Figure 1, a kind of intelligent digital electronics synthesis experience system, digital programmable circuit module use
EP3C10E144C8 programming device carries out JTAG10 core programming port, mature circuit.
As shown in Figure 1, a kind of intelligent digital electronics synthesis experience system, power-down protection circuit module use power down protection
Device EPCS4 is automatically configured after being re-energised to EP3C10E144C8 device, mature circuit.
As shown in Figure 1, a kind of intelligent digital electronics synthesis experience system, 50MHz impulse generator use 50MHz crystal oscillator
Module generates the pulse signal of 50MHz, is supplied to EP3C10E144C8 device, mature circuit.
As shown in Figure 1, a kind of intelligent digital electronics synthesis experience system, power-switching circuit is electric by+5V using K3C5B
Pressure is converted to+2.5V voltage and uses 16263S that+5V voltage is converted to+3.3V voltage as the work of EP3C10E144C8 device
Make power supply, mature circuit.
As shown in figure 9, a kind of intelligent digital electronics synthesis experience system, tele-experimentation interface circuit use electronic switch
CD4066 is constituted, and K1~K8 is control input, and D1~D8 is numeral output.
As shown in Figure 1, a kind of intelligent digital electronics synthesis experience system, single-chip microcontroller minimal application system circuit module, with
The singlechip group of AT89S series or STC series is at minimal application system circuit, for combining design modern with digital programming device
Large-scale digital display circuit, mature circuit.
As shown in Figure 10, a kind of intelligent digital electronics synthesis experience system, AD7520 digital-to-analogue conversion and digital-control amplifier, U8
AD7520 digital analog converter is inputted for 10 parallel-by-bits, U9 is amplifier uA741, inputs digital quantity D9-D0, determines voltage amplification times
Number, when D9-D0 is all 1, voltage amplification factor is that-1, D9-D0 cannot be all 0.Amplification factor are as follows:
As shown in figure 11, a kind of intelligent digital electronics synthesis experience system, LCD1602 liquid crystal display circuit module, passes through
To single-chip microcontroller and digital programming device programming, U10:LCD1602A liquid crystal display is controlled with it and realizes number, letter and Chinese character
Display.
As shown in figure 12, a kind of intelligent digital electronics synthesis experience system, level sensitive circuit module, to detect 12 tunnels
The output level of digital circuit, when inputting Li is low level, corresponding Di does not work；When Li is high level, corresponding Di hair
Bright, U11 is phase inverter 74LS04 in figure.
As shown in figure 13, a kind of intelligent digital electronics synthesis experience system, digital pipe display circuit module, totally 4,2
Band decoding, 2 have selection short circuit cap without decoding, charactron data terminal of 2, the right with decoding, and 4 are both able to achieve static state
It has been shown that, and it is able to achieve dynamic scanning displaying；By the way that data selector is arranged, it can also be achieved 4 or more static status displays.U12 is
Seven-segment decoder 74LS48, U13 are charactron 4215.
As shown in figure 14, a kind of intelligent digital electronics synthesis experience system, relay buzzer use level such as Figure 14 (a)
Signal realizes the on-off of relay J, and then realizes the control to external circuit, and in figure: GT is photoelectrical coupler, and isolation is used；T2,
T3 is 9013 triodes, and amplification is used；D11 is IN4148 diode, and protection is used.Such as Figure 14 (b), buzzing is pushed with electric impulse signal
Device FM realizes alarm, and T4 is 9013 triodes, and amplification is used.
As shown in figure 15, a kind of intelligent digital electronics synthesis experience system, amplification driving circuit module, due to digital device
It is smaller (usually less than 20mA) to export electric current, and to take electric current larger for LED dot matrix, therefore digital device output electric current needs to amplify
LED dot matrix could be pushed to work.This system uses common cathode column scan, therefore column scan signal is connected to 8050 triodes, row signal
8550 triodes are connected to, ranks signal is derived from programming device EPM1270T144C5, and data to be shown, text, figure etc. are compiled
Code is programmed with VHDL language and is realized.
As shown in Figure 1, a kind of intelligent digital electronics synthesis experience system, LED lattice display circuit module, using 48 ×
8 LED dot matrix, model: SZ411288 is worked using common cathode column scan mode, passes through amplification driving circuit and programming device
Connection.
As shown in Figure 16, Figure 17, a kind of intelligent digital electronics synthesis experience system, tele-experimentation circuit module, comprising: string
Row mouth RS232, network interface RJ45, phase inverter 74HC04D, latch 4HC373, network transformer 20F-01, level conversion
MAX232。
Network module RTL8019AS: utilizing RTL8019AS 10M ISA network card chip access network based on ethernet, realizes single-chip microcontroller
With the communication in internet cloud；Single chip microcomputer W78E58B: the function of control network module online, and communicated with PC machine, it completes
Related commissioning function；Memory 93C46: storing the related data of network module, reads the MAC Address of network interface card；Memory
24C02: data to be saved is needed before cooperation single-chip microcontroller storage power down, while being also used for some settings of storage user；Network becomes
Depressor 20F-01: enhancing signal keeps transmission range farther, enhances anti-interference ability, protects chip；Electrical level transferring chip MAX232:
The mutual conversion of Transistor-Transistor Logic level and RS-232 level is completed, realizes the communication of single-chip microcontroller and PC machine；Memory 62256: monolithic is improved
The data transmission bauds of machine handles complicated TCP/IP；Programmable chip 8255A: connection single-chip microcontroller and experimental box realize monolithic
Long-range control of the machine to experimental box.
Tele-experimentation circuit module portion overall work principle: hardware components using single chip microcomputer W78E58B as main control chip,
Using network module RTL8019AS connection single-chip microcontroller and internet, programmable chip 8255A connection single-chip microcontroller and experiment are utilized
Case, software section are programmed network module using single chip microcomputer W78E58B, and network module is made to be successfully accessed internet cloud,
Realize data transmission.User on the internet can remotely control experimental box by the pattern manipulation interface of construction, cloud
True experimental data is passed at end back, experiment needed for completing.
As shown in Figure 1, a kind of intelligent digital electronics synthesis experience system, power circuit block: for each section interlock circuit
+/- 5V, +/- 12V working power are provided.Free circuit connection area is bread board structure, for free wiring, passes through short circuit cap and choosing
The circuit selected is connected, mature circuit.
As shown in Fig. 1-17, a kind of intelligent digital electronics synthesis experience system meets following functions:
(1) there are all kinds of level signal generation circuits
System is provided with low and high level generation circuit, single and HEX signal generating circuit, modulus parallel change-over circuit, key
Disk input circuit.Incoming level signal can be provided for other circuits.
(2) pulse signal of various frequencies can be generated
System is provided with pulse generation and frequency dividing circuit, 555 pulse conditioned circuits, 50MHz impulse generator, both can be real
Checking research are tested, and signal can be provided for circuit.
(3) it is able to achieve modulus serial conversion
System is provided with the modulus serial conversion circuit using ADC0832 as chip, provides and turns for single-chip microcontroller and programming device
The digital signal of serial input after changing.
(4) digital-to-analogue conversion and numerical control amplification are able to achieve
System is provided with can be amplified by the digital-to-analogue conversion of chip and amplification factor of AD7520 with the numerical control of discrete control
Device can receive the digital signal from all kinds of level signal generation circuits or programming device, be engaged in experimental study.
(5) various information is able to achieve to show
System is provided with LCD1602A liquid crystal display circuit, level sensitive circuit, digital pipe display circuit, band amplification driving
LED lattice display circuit, can show the various informations such as low and high level, number, number, text and waveform.
(6) timing controlled and warning function are able to achieve
System, which is provided with, realizes time-controlled relay and the buzzer circuit with warning function.
(7) the digital logic functions in-system programmable components of large capacity Yu more ports I/O are able to achieve
System is provided with band power-down protection circuit (being power down protection device with EPCS4) of altera corp and JTAG is programmed
The EP3C10E144C8 programming device of the FPGA type of mouth, and match power-switching circuit.By software programming, can arbitrarily constitute
Desired logic function.In actual use, periphery connects relevant imput output circuit and constitutes complete digital display circuit.
(8) it is able to achieve single-chip microcontroller in-system programmable components function
Can to AT89S series or STC series single-chip microcontroller in-system programming, realize single-chip microcontroller control show and with number
Word programmable logic device is implemented in combination with large-scale synthesis digital display circuit.
(9) free circuit connection and the flexible connection function of short circuit cap
System is provided with the free circuit connection area being made of combination bread board, for the free wiring of user, and and Xiang Guan electricity
Road connection；The input and output of each circuit module switch selection connection by short circuit cap between each circuit module there are port,
Convenient for secondary flexible connection circuit, avoids device pin not enough and input mutual dry between input, input and output
It disturbs.
(10) tele-experimentation mode
, not only can be with field experiment using this system, but also tele-experimentation function may be implemented.It is connect by tele-experimentation
Mouth circuit is connected with tele-experimentation circuit module, realizes tele-experimentation function.Concrete thought: being directed to a certain project demand, existing
Journey is finished to the single-chip microcontroller in programming device and tele-experimentation circuit module in advance in field, and fundamental line connects, and power supply, which connects, (to be connected
Or closing power supply is to be controlled), network is connected；At home or another place passes through the computer that can be surfed the Internet, and passes through what is specially developed
Common operating software carrys out the power switch of tele-control system, sees output situation to input.If camera subsystem is loaded at scene,
Field experiment case situation can be seen on computers.
Claims (10)
1. a kind of intelligent digital electronics synthesis experience system, including power circuit block (22)；It is characterized by: the electronics is comprehensive
Experience system is closed also by level generation circuit module (1), single and HEX signal generating circuit module (2), modulus Parallel transformation electricity
Road module (3), keyboard signal generation circuit module (4), pulse generation and frequency dividing circuit module (5), 555 pulse conditioned circuit moulds
Block (6), modulus serial conversion circuit module (7), digital programmable circuit module (8), power-down protection circuit module (9), 50MHz arteries and veins
Rush generator (10), power-switching circuit module (11), tele-experimentation interface module (12), single-chip microcontroller minimal application system
Circuit module (13), AD7520 digital-to-analogue conversion and digital-control amplifier (14), LCD1602 liquid crystal display circuit module (15), level
Detection circuit module (16), digital pipe display circuit module (17), relay buzzer (18), amplification driving circuit module
(19), LED lattice display circuit module (20), tele-experimentation circuit module (21) and free circuit connection area (23) connect structure
At；
The level generation circuit module (1), single and HEX signal generating circuit module (2), modulus parallel change-over circuit module
(3), the level and pulse signal connection that pulse generation and frequency dividing circuit module (5), 555 pulse conditioned circuit modules (6) issue
To the digital programmable circuit module (8), single-chip microcontroller minimal application system circuit module (13) and free circuit connection area (23)
Input terminal；The level signal of level generation circuit module (1) output is connected to AD7520 digital-to-analogue conversion and numerical control amplification
The input terminal of device (14), keyboard signal generation circuit module (4) are answered with digital programmable circuit module (8), single-chip microcontroller minimum respectively
It is formed and is bi-directionally connected with circuit system module (13)；The digital signal connection that the modulus serial conversion circuit module (7) issues
To digital programmable circuit module (8), the output end of single-chip microcontroller minimal application system circuit module (13)；The power-down protection circuit
Module (9) output is connected to digital programmable circuit module (8) to realize power-down protection；The 50MHz impulse generator
(10) output is connected to digital programmable circuit module (8) to provide pulse signal；Power-switching circuit module (11) output
Digital programmable circuit module (8) is connected to provide working power；The single-chip microcontroller minimal application system circuit module (13)
Digital output signal is connected to LCD1602 liquid crystal display circuit module (15), level sensitive circuit module (16), numeral method
The input terminal of circuit module (17)；The digital output signal of the digital programmable circuit module (8) is connected to AD7520 digital-to-analogue and turns
It changes and digital-control amplifier (14), LCD1602 liquid crystal display circuit module (15), level sensitive circuit module (16), charactron is aobvious
Show circuit module (17), relay buzzer (18), amplification driving circuit module (19), LED lattice display circuit module (20),
The input terminal of tele-experimentation circuit module (21)；The digital signal level of the tele-experimentation circuit module (21) is connected to remotely
The input terminal of experimental interface circuit module (12)；The output end of the tele-experimentation interface module (12) is connected to digital volume
The input terminal of journey circuit module (8)；The output end of the digital programmable circuit module (8) is connected to tele-experimentation circuit module
(21) input terminal；The output end of the free circuit connection area (23) is connected to digital programmable circuit module (8), level detection
The input terminal of circuit module (16), digital pipe display circuit module (17)；The power circuit block (22) is connected to each circuit
The input terminal of module, to provide working power for each circuit module.
2. a kind of intelligent digital electronics synthesis experience system according to claim 1, it is characterised in that: the digital programmable
The output of circuit module (8), single-chip microcontroller minimal application system circuit module (13) is sent to keyboard signal generation circuit module (4) row
Scan input end, keyboard signal generation circuit module (4) column output is sent to digital programmable circuit module (8), single-chip microcontroller minimum is answered
With the input terminal of circuit system module (13), when keyboard signal generation circuit module (4) is different with digital programmable circuit module
(8), single-chip microcontroller minimal application system circuit module (13) is connected.
3. a kind of intelligent digital electronics synthesis experience system according to claim 1, it is characterised in that: each circuit mould
The input and output of block switch selection connection by short circuit cap between each circuit module, flexibly connect convenient for secondary there are port
Circuit is connect, avoid device pin not enough and inputs interfering with each other between input, input and output.
4. a kind of intelligent digital electronics synthesis experience system according to claim 1, it is characterised in that: the digital programmable
The inner programming device programming of circuit module (8), uses I/O mouthfuls as input and output, to single-chip microcontroller minimal application system circuit
The inner mcu programming of module (13), use its P mouthfuls as input and output.
5. a kind of intelligent digital electronics synthesis experience system according to claim 1, it is characterised in that: the digital programmable
EP3C10E144C8 programming device is used in circuit module (8), carries out JTAG10 core programming port；Power-down protection circuit module (9)
It is automatically configured after being re-energised using power down protection device EPCS4 to EP3C10E144C8 device；50MHz impulse generator (10)
The pulse signal that 50MHz is generated using 50MHz crystal oscillator module, is supplied to EP3C10E144C8 device；Power-switching circuit module
(11) use K3C5B that+5V power supply is converted to+2.5V power supply as the working power of EP3C10E144C8 device；Tele-experimentation
Interface module (12) is constituted with electronic switch CD4066, and K1~K8 is control input, and D1~D8 is numeral output.
6. a kind of intelligent digital electronics synthesis experience system according to claim 1, it is characterised in that: the single-chip microcontroller is most
Small application system circuit module (13) is with the singlechip group of AT89S series or STC series at minimal application system circuit.
7. a kind of intelligent digital electronics synthesis experience system according to claim 1, it is characterised in that: the LED dot matrix
Display circuit module (20) uses 48 × 8 LED dot matrix, and model SZ411288 is worked using common cathode column scan mode, leads to
Amplification driving circuit is crossed to connect with programming device.
8. a kind of intelligent digital electronics synthesis experience system according to claim 1, it is characterised in that: the amplification driving
Circuit module (19) uses common cathode column scan, and column scan signal is connected to 8050 triodes, and row signal is connected to 8550 triodes, ranks
Signal is taken from programming device EP3C10E144C8.
9. a kind of intelligent digital electronics synthesis experience system according to claim 1, it is characterised in that: the charactron is aobvious
Show circuit module (17) totally 4,2 band decodings, 2 have selection short circuit without decoding, 2 charactron data terminals with decoding
Cap, 4 are not only able to achieve static status display, but also are able to achieve dynamic scanning displaying；By be arranged data selector, can also be achieved 4 with
On static status display.
10. a kind of intelligent digital electronics synthesis experience system according to claim 1, it is characterised in that: the long-range reality
Circuit module (21) is tested by network module, single-chip microcontroller, memory, network transformer, electrical level transferring chip, memory and may be programmed
Chip connects and composes；Network module is RTL8019AS, using RTL8019AS 10M ISA network card chip access network based on ethernet, is realized
The communication of single-chip microcontroller and internet cloud；Single-chip microcontroller is W78E58B, the function of control network module online, and is carried out with PC machine
Related commissioning function is completed in communication；Memory is 93C46, stores the related data of network module, reads the MAC Address of network interface card；
Memory is 24C02, with cooperate single-chip microcontroller store power down before need data to be saved, while be also used for storage some of user set
It sets；Network transformer is 20F-01, keeps transmission range farther to enhance signal, enhances anti-interference ability, protects chip；Level turns
Changing chip is MAX232, to complete the mutual conversion of Transistor-Transistor Logic level Yu RS-232 level, realizes the communication of single-chip microcontroller and PC machine；It deposits
Reservoir is 62256, to improve the data transmission bauds of single-chip microcontroller, handles complicated TCP/IP；Programmable chip is 8255A, with
Single-chip microcontroller and experimental box are connected, realizes long-range control of the single-chip microcontroller to experimental box.
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