CN105913739A - Single-chip microcomputer modularization experiment training system and method based on virtual simulation platform - Google Patents

Abstract

The invention discloses a single-chip modularized experimental training system and method based on a virtual simulation platform, comprising: a virtual simulation part and an experimental box training part; The virtual simulation experimental circuit; the overall virtual simulation experimental circuit of the combination of different experimental modules matched with the experimental box; the experimental box training part includes: IC locking socket, the minimum system module of the single chip microcomputer is set respectively on the IC locking socket, Digital tube display module, LED indicator module, power module, USB download module, serial port download module, data storage module, data conversion module, clock module and self-developed module. The invention has beneficial effects: the use of software virtual simulation does not need to repeatedly download and debug programs on the actual hardware circuit, which saves time, avoids equipment wear and tear, and prolongs the use time of equipment.

Description

Single-chip modular experiment training system and method based on virtual simulation platform

technical field

The invention relates to the technical field of an experimental learning system combining virtual simulation and experimental training for single-chip learning and use, in particular to a single-chip modularized experimental training system based on a combination of a virtual simulation platform and an experimental box training platform and a method for using the same .

Background technique

The principle and application of single-chip microcomputer is a highly practical course, and the theoretical knowledge involved is abstract and difficult to understand. The learning goal of the course is to achieve independent design research and development through theoretical study and experimental operation.

At present, on the one hand, in the process of learning theory, abstract theoretical learning content is difficult to stimulate students' interest in learning; on the other hand, if this course does not have experiments and further design operations, it will not be able to achieve the purpose of this course. . Therefore, the theoretical study, experimental teaching, and independent design and development of the single-chip principle and application course must also be adjusted and updated. Through years of teaching and research, it is found that there are still deficiencies in the various learning links of the single-chip computer course in colleges and universities, and it is impossible to achieve the ultimate goal of setting up this course. There are mainly the following problems:

(1) The effect of experimental teaching is poor. The current single-chip microcomputer experimental teaching is mainly to use the experimental box to carry out verification experimental projects. The method generally used is: students use a serial cable to connect the experimental box to the PC. After writing the verification program, click the button to download the program to the experiment. box to see the result. Most of the students, in this process, do not know what the principle of downloading is, which specific circuits and which specific chip pins are used to download the program to the microcontroller; they also do not know what the circuit of the experiment is. Because there is no intuitive experimental circuit, students are at a loss when writing programs, and students cannot take the first step of independent design, so they cannot achieve the training goals of the course.

(2) The experimental items of the existing single-chip experiment box are fixed, and beginners can only verify the experimental items, which is difficult to use for engineering training and innovative comprehensive project development, and the ideal learning effect cannot be achieved.

Contents of the invention

The object of the present invention is to solve the above-mentioned problems and provide a single-chip modular experiment training system and method based on a virtual simulation platform. The system includes two parts: a virtual simulation platform and an experimental box training platform. The virtual simulation platform includes: the overall virtual simulation circuit with the same structure as the experimental box circuit, and several independent module experimental project virtual simulation circuits; the experimental box training platform adopts Modular design, each module can be used independently or in combination through the dial switch; each module is equipped with a corresponding virtual simulation circuit diagram, and the user can first use the virtual simulation circuit when using the experimental box training platform to operate. Simulate the experimental items to be carried out on the experimental box, debug the experimental program, and get familiar with the actual circuit.

To achieve the above object, the specific scheme of the present invention is as follows:

A single-chip modularized experimental training system based on a virtual simulation platform, comprising: a virtual simulation part and an experimental box training part;

The virtual simulation part includes: several independent virtual simulation experimental circuits matched with each experimental module of the experimental box; the overall virtual simulation experimental circuit of the combination of different experimental modules matched with the experimental box;

Carry out the virtual simulation experiment through the independent virtual simulation experiment circuit or the whole virtual simulation experiment circuit; or build the required virtual simulation experiment circuit through each independent virtual simulation experiment circuit to carry out the virtual simulation experiment;

The training part of the experiment box includes: an IC locking socket, on which the minimum system module of a single chip microcomputer, a digital tube display module, an LED indicator module, a power supply module, a USB download module, a serial port download module, Data storage module, data conversion module, clock module and self-developed module; a plurality of double-row pins lead out all the pins of the single-chip microcomputer through the dial switch, the digital tube display module, LED indicator module, power module, USB download module , serial port download module, data storage module, data conversion module and clock module are respectively connected to the corresponding pins of the single-chip microcomputer through the dial switch; each module is equipped with a circuit diagram of the corresponding module and the status of the dial switch when the module is in use;

Each I/O port of the minimum system module of the single-chip microcomputer is respectively connected to a dial switch, and the corresponding I/O port line is drawn by selecting the dial switch, and different module combinations are realized by changing the wiring strategy of the dial switch;

A self-designed experimental circuit is built on the self-developed module, and the experimental circuit is connected to the I/O port line of the minimum system module of the single-chip microcomputer by selecting a dial switch, so that the experimental circuit is enabled.

Further, it also includes: five-wire four-phase stepping motor module, four-wire bipolar stepping motor module, RS-485 communication module, relay module, dot matrix module, matrix keyboard module, independent button module, buzzer module , 138 decoding circuit module, photosensitive module, thermal module, infrared module, temperature sensor module, LCD1602 module, TFT color screen module and traffic light module; the above modules are respectively connected with the minimum system module of the single chip microcomputer through the dial switch; each module uses When enabled, the module indicator light is on.

Further, the USB download module and the serial port download module of the training part of the experiment box are respectively connected to the I/O port line of the minimum system module of the single-chip microcomputer through a 4-wire 3-speed dial switch, and by selecting the 4-wire 3-speed dial switch In the connected state, the USB download mode, the serial port download mode and the normal use of the I/O port mode are respectively realized.

Further, the digital tube display module includes a dynamic digital tube display unit and a static digital tube display unit; the dynamic digital tube display unit includes:

The input end of the latch is connected to the P1 port of the minimum system module of the single-chip microcomputer through the dial switch Sleds2P1, and the output end of the latch is connected to the segment selection of the 7-segment code display, and connected to 8 LED indicators through the dial switch Sled The position selection of the 7-segment code display is connected to the P0 port of the minimum system module of the single-chip microcomputer through the dial switch SledbitP0; the enabling end of the latch is connected to the power supply module through the dial switch SLE;

When the DIP switches SLE, Sleds2P1 and SledbitP0 are connected, the use of the 7-segment display is completed; when the DIP switches SLE, Sleds2P1, and Sled are connected, the practice of the marquee is completed.

Further, the self-developed module connects the PO, P1, P2, and P3 four I/O ports of the minimum system module of the single-chip microcomputer through four 8-bit DIP switches to lead 4 groups of 8-bit signal lines to 4 groups of 8-bit dual On the row of pins; the self-developed module provides the power supply and ground terminal of the self-designed experimental circuit.

Further, the self-developed module has several groups of rows of seats with the same structure, and each row of seats has several horizontal rows, and each row of rows includes 5 rows of seat holes, and the rows of seats on each of the horizontal rows The holes are electrically connected to each other, and the several rows of bars are isolated from each other.

Further, when conducting experimental training and learning, first select or build a virtual simulation experimental circuit for simulation experiments through the virtual simulation part. After successful debugging, build an actual circuit on the training part of the experimental box according to the virtual simulation experimental circuit; use the simulation experimental circuit The driver drives the actual circuit to verify the experimental effect; if the expected simulation effect cannot be achieved, check whether the actual circuit is consistent with the virtual simulation experimental circuit, and check whether the parameters of the components used are accurate.

A method for using a single-chip modular experiment training system based on a virtual simulation platform, comprising:

(1) Select or build a virtual simulation experimental circuit through the virtual simulation part, write the experimental circuit driver, generate a HEX file, and carry out the simulation experiment;

(2) After the virtual simulation experimental circuit is debugged successfully, build the actual circuit on the training part of the experimental box according to the virtual simulation experimental circuit; determine the I/O port that each experimental module needs to connect, and use the dial switch for each experimental module Allocate I/O ports;

(3) By selecting the connection state of the DIP switch, select the serial download mode or the USB download mode; download the experimental circuit driver;

(4) Fluctuate the DIP switch on the experimental training platform to enable the corresponding experimental module;

(5) Verify the experimental effect; if the expected simulation effect cannot be achieved, check whether the actual circuit is consistent with the virtual simulation experimental circuit, check whether the parameters of the components used are accurate and whether the actual circuit driver is accurate.

Further, when conducting self-designed experiments, determine the experimental modules required for the experiment, and assign the I/O ports that need to be connected to each experimental module;

For the existing experimental modules on the experimental training platform, connect to the corresponding I/O port through the dial switch, and toggle the dial switch to enable the above modules;

For the self-designed experimental module, use Dupont wires to connect the power line and ground line of the self-designed module to the power and ground pins of the self-developed module, and connect the intermediate analog data output line of the self-designed module to the self-developed module through a dial switch. The I/O port of the module is connected; dial the code switch to make the above I/O port in the connected state.

Beneficial effects of the present invention:

(1) Before carrying out independent module experiments in the experimental box, use the virtual simulation platform to call out the virtual simulation circuit diagram, you can intuitively see the experimental circuit diagram, write the driver program, and realize the experimental effect on the virtual simulation. It is convenient and intuitive to see the experimental circuit on the PC, which facilitates the writing of the driver program; using the virtual simulation of the software, it is not necessary to repeatedly download the debugging program on the actual hardware circuit, which saves time, avoids equipment loss, and prolongs the use of equipment.

(2) Before carrying out the comprehensive experiment, the first step is to use the virtual simulation circuit of each experimental module combination matched with the experimental box according to the set function effect, and simply connect and toggle the virtual simulation circuit between the relevant virtual simulation module circuits. DIP switch, write software program, simulate the actual function, and then improve it through its analysis, so as to realize the optimal design of the circuit. The second step is to realize it on the experimental box according to the optimized circuit. This process saves development and design time and is intuitive and easy to understand.

(3) Use the dial switch in the experimental box training platform to ① avoid the messy connection of the experimental box due to the traditional jumper, and ② avoid poor contact of the connector of the jumper, which will affect the experimental effect.

(4) Based on the single-chip experimental training system combined with the virtual simulation platform and the experimental box training platform, each experimental module can be used independently, and the hardware combination form can also be changed by adopting different dial switch connection strategies; With the development module, users can carry out engineering training by building hardware circuits independently on the basis of the existing experimental modules, and realize independent innovative experiments.

(5) Equip each experimental module with a corresponding circuit structure diagram, which can be called when needed, so that users can fully understand the circuit structure of each module, so that they can reasonably design the connection pins when designing.

Description of drawings

Fig. 1 is a basic frame diagram of the platform of the present invention;

Fig. 2 is the minimum system core module circuit diagram of the single-chip microcomputer of the present invention;

Fig. 3 (a) is the serial port download circuit diagram of the present invention;

Fig. 3 (b) is the USB download circuit diagram of the present invention;

Fig. 4 is 8 dynamic nixie tube display module circuit diagrams of the present invention;

Fig. 5 is the module circuit diagram of the external expansion data storage area of 32k of the present invention;

Fig. 6 is a schematic diagram of the independent design module of the present invention.

detailed description:

The present invention is described in detail below in conjunction with accompanying drawing:

A single-chip modularized experimental training system based on a virtual simulation platform, comprising: a virtual simulation part and an experimental box training part;

The virtual simulation part includes: several independent virtual simulation experimental circuits that match the experimental modules of the experimental box; the overall virtual simulation experimental circuit of different experimental module combinations that match the experimental box; The simulation experiment circuit is used for virtual simulation experiment; or the required virtual simulation experiment circuit is constructed through each independent virtual simulation experiment circuit for virtual simulation experiment. When using the experimental box training platform, the user can first use the virtual simulation circuit, load the program on the virtual simulated CPU, simulate the experimental items to be carried out on the experimental box, debug the experimental program, and understand the actual circuit principle.

The training part of the experimental box is shown in Figure 1, including: IC locking socket, easy to replace different types of single-chip microcomputers, multiple double-wire pins lead out all pins of the single-chip microcomputer through the dial switch; users independently build circuit modules, single-chip microcomputers Minimum system core module, 5v power supply module, USB download module, serial port download module, five-wire four-phase stepper motor module, four-wire bipolar stepper motor module, RS-485 communication module, relay module, 16*16 dot matrix module, 4*4 matrix keyboard module, 8 independent button modules, buzzer module, 138 decoding circuit module, 8-digit dynamic digital tube display module, 2-digit static digital tube module, 32k external expansion data storage module, AD/DA/photosensitive, thermal module, infrared module, temperature sensor module, real-time clock module, LCD1602 module, TFT color screen module, traffic light module, 8-digit digital tube display module and external power supply module, when each module is selected for use , are indicated by LED indicators.

The above-mentioned modules are respectively connected to the corresponding pins of the single-chip microcomputer through the dial switch; each module is equipped with a circuit diagram of the corresponding module and the status of the dial switch when the module is in use.

Each I/O port of the smallest system module of the single-chip microcomputer is respectively connected to a code switch, and the corresponding I/O port line is drawn out by selecting the code switch, and different module combinations are realized by changing the wiring strategy of the code switch; in the self-developed module A self-designed experimental circuit is built on the above, and the experimental circuit is connected to the I/O port line of the smallest system module of the single-chip microcomputer by selecting the dial switch, so that the experimental circuit is enabled.

The circuit diagram of the core module of the minimum system of the single-chip microcomputer of the present invention. as shown in picture 2.

This module includes a reset circuit, an oscillation circuit, and a circuit added to increase I/O drive capability. The crystal oscillator is not directly welded on the PCB board, but the crystal oscillator socket is welded to the crystal oscillator position, which is convenient for replacing the crystal oscillator according to needs; the reset circuit can be reset by power-on or by pressing the reset button; each I/O is increased by 10K to increase the driving capacity pull resistor.

The circuit diagrams of the USB download module circuit and the serial port download module of the present invention are shown in Fig. 3(a) and Fig. 3(b).

The USB download module takes power from the USB, uses the USB cable to get +5v power from the PC, and then outputs power to the microcontroller through the USB-to-serial chip CH340G after filtering. The RXD-U and TXD-U signals output by the USB-to-serial chip CH340G are connected to the RXD-U and TXD-U terminals of the 3-speed 4-wire DIP switch in Figure 3 (a). So far. In this module, the self-locking button is the master switch of the whole system.

The serial download module of the present invention uses a MAX232A chip plus peripheral circuits to convert from CMOS level to TTL level. The MAX232A is DIP-8, and the base is welded on the actual PCB board to facilitate the replacement of the MAX232A chip.

In the present invention, the serial port download can be used, and the USB download can also be used, so the 4-wire 3-speed DIP switch is used, and the 4-wire 3-speed DIP switch is dialed to the TXD-R and RXD-R terminals for serial port download; 4-wire 3-speed DIP switch Turn the switch to the TXD-U and RXD-U terminals for USB automatic download; the middle position of the 4-wire 3-position DIP switch is for normal use of the I/O port.

The circuit diagram of the 8-bit dynamic digital tube and the 8-bit LED module of the present invention is shown in Figure 4:

The input terminal of the latch is M74HC573B1R plus a 10K pull-down resistor, connected to the P1 port through the dial switch Sleds2P1, the output port is connected to the segment selection of the 7-segment code display, and connected to 8 LEDs through the dial switch; the P0 port has 8 wire diameters The dial switch SledbitP0 is connected to the bit selection of the 7-segment code display; the enable terminal of the latch M74HC573B1R is connected to the power supply through the dial switch SLE, and when the enable terminal is connected, the module indicator light is on.

In this module, different combinations of DIP switches can be selected to complete different experiments. The combination of SLE, Sleds2P1, and SledbitP0 can complete the use of a 7-segment display; the combination of SLE, Sleds2P1, and Sled can complete the practice of the marquee.

Fig. 5 is a circuit diagram of a 4k externally expanded data storage area and a parallel I/O interface expansion module of the present invention.

There is only 128B data RAM inside the MCS-51 single-chip microcomputer. When more RAM is needed in the application, it can only be expanded externally. The experimental training platform of the present invention has expanded the RAM of 4K, and there are 4 8 parallel I/O ports in the MCS-51 single-chip microcomputer, after expanding the external memory, only 6 bits of the P1 port and the P3 port are available, so it is necessary to expand the I/O port. /O interface. If the platform needs to use the extended I/O port in the engineering training, its lead wires can lead out the address lines, control lines, and data lines from the pin headers BUSA1, BUA2, BUSC, and BUSAD respectively. The external data RAM address range is 0000H----0FFFH, and the I/O address is within the range of 1000H-FFFFH. This module is only selected by the program when expanding the memory and I/O, and the enabling of 74LS373 is controlled by the address latch signal ALE. In the case of no expansion, the use of other modules will not enable this module, so this module does not need to use a code switch.

The power supply module of the experimental training platform of the present invention can provide +5V, -5V, +12V, -12V, +3.3V, -3.3V, 6 kinds of voltages. When expanding the circuit, the power supply can be selected according to the actual needs, and the pin headers are welded on each power supply to facilitate external power supply after filtering. The experimental training platform can also be powered by 3.3V, just turn the 3-wire 2-speed DIP switch to 3.3V.

All modules can be used independently to complete basic experiments, and can also be used comprehensively to complete innovative design experiments. There are many modules that can be controlled by a single-chip microcomputer, and it is impossible to involve all of them on a test board. In order to meet the requirements of innovative experimental design for users who have a certain single-chip foundation and engineering training, the invention designs an independent development module for users to build circuits independently, and combines the existing resources of the experimental training platform to carry out innovative designs.

The self-developed module circuit is shown in Figure 6. This module leads the four I/O ports PO, P1, P2, and P3 to four double-row pins through four 8-bit DIP switches. This module provides 6 kinds of power and ground terminals needed to build the circuit. This module leads out the I/O port lines of P0, P1, P2, and P34 groups with pull-up resistors from the core module through the DIP switch, and leads them to 4 groups of 8*2 pin headers for self-assembly of the module. The pin spacing is 2.5mm for standard in-line chips. This module also provides 6 sets of 3*2 pin headers, providing +5V, -5v, +12v, -12V, and ground points respectively. This module provides an area of 13cm*11cm, as shown in the figure: there are 5 groups of seats with the same functional structure in this area, and the distance between each group is 2.54mm*3. Within each group, the five rows of seats in each row are electrically connected to each other, and the rows are isolated from each other. The pitch of each seat row is 2.54mm. This design facilitates the direct insertion and use of single-row or dual-in-line chips with a pin pitch of 2.54mm.

The method of using the single-chip modular experiment training system based on the virtual simulation platform is introduced as follows:

1. The method steps of the verification experiment of the independent experimental project.

① On the virtual simulation platform, retrieve the simulation circuit diagram of the module, determine the simulation I/O port that the experimental module needs to connect to, use the virtual electronic device dial switch to assign the simulation I/O port to the experimental module, and configure the virtual simulation circuit diagram ;

② Write and debug experimental driver program, generate HEX file, and load program to virtual simulation CPU;

③Observe the experimental results, if the virtual experiment effect is not achieved, go back to step ②, and proceed to the next step when the experimental effect is achieved;

④ Configure the experimental box training platform: compare the configured virtual simulation circuit diagram, toggle the dial switch to configure the experimental training project connection of the experimental box;

⑤ Select the serial port download mode or USB download mode by selecting the connection status of the DIP switch, and download the control program to the experiment box;

⑥ Observe whether the experimental effect is achieved. If the expected effect is not achieved, go back to step ④ to check; until the ideal experimental effect appears.

⑦ After the experiment is completed, tidy up the experimental training platform of the experimental box and disconnect all the dial switches.

It should be noted that during the experimental training process, avoid using the RXD/P3.0TXD/P3.1 ports, because these two ports are used for downloading. If it cannot be avoided, when downloading the program, the RXD/P3.0TXD/P3.1 port of the module to be used can be disabled. After the program is downloaded, the RXD/P3.0TXD/P3.1 port of the module can be enable state.

2. Use existing circuit modules to carry out comprehensive and innovative test project usage steps. This system can be used in conjunction with several modules to develop comprehensive experiments. For example: use DS18B20 module, LCD display module, keyboard module, sound module. For comprehensive experiments, the LCD can display the real-time temperature of DS18B20, and the keyboard can set an upper or lower temperature limit. When the real-time temperature exceeds the set range, the sound module can be used to generate an alarm or prompt.

① On the virtual simulation platform, retrieve the overall virtual simulation circuit with the same circuit structure as the experimental box, determine the experimental modules required for the comprehensive innovative experiment, use the virtual electronic component dial switch to select the simulation module used, and configure the virtual simulation circuit diagram;

② Write a program on the software provided by a third party (such as keil, IAR), generate a HEX file, and load the program to the virtual simulation CPU;

③Observe the experimental results, if the virtual experiment effect is not achieved, go back to step ①, recheck whether it is a hardware configuration problem or a program problem; if the experimental effect is reached, proceed to the next step;

④ Configure the experimental box training platform: compare the configured virtual simulation circuit diagram, and allocate the control terminal of LCD1602, DS18B20, and buzzer on the experimental training platform. The I/O port for selection is P2. Therefore, use the dial switch Assign P25, P26, and P27 to LCD1602; assign P20 to DS18B20; assign P21 to the buzzer; use P0 port for the 8 data ports of LCD1602, and use P1 port for the matrix keyboard. Make each module in enable state.

⑤ Select the serial port download mode or USB download mode by selecting the connection status of the DIP switch, and download the control program to the experiment box;

⑥ Observe whether the experimental effect is achieved. If the expected effect is not achieved, go back to step ④ to check; if the desired effect cannot be achieved on the virtual simulation platform, there is an error in the program, go back to step ② to modify the program until the virtual simulation shows the desired effect.

⑦ After the experiment is completed, tidy up the experimental training platform of the experimental box and disconnect all the dial switches.

3. Use the self-developed module to build the usage steps of the experimental project that this system does not have.

The virtual simulation experiment platform is an open platform, on which it is easy to build experimental modules that the system does not have.

①On the virtual simulation platform, build the virtual simulation circuit diagram of the experimental project,

② Write and debug experimental driver program, generate HEX file, and load program to virtual simulation CPU;

③Observe the experimental results, if the effect of the virtual experiment is not achieved, go back to step ②, recheck whether it is a hardware configuration problem or a program problem, and proceed to the next step if the experimental effect is achieved;

④ Build the circuit diagram of the actual experimental project on the experimental box training platform;

⑤ Select the serial port download mode or USB download mode by selecting the connection status of the DIP switch, and download the control program to the experiment box;

⑥ Observe whether the experimental effect is achieved. If the expected effect is not achieved, go back to step ③ to check; until the desired effect appears.

4. Use self-developed modules to add modules that are not in the experimental system to create innovative projects.

①On the virtual simulation platform, retrieve the overall virtual simulation circuit with the same circuit structure as the experimental box, and determine the existing modules to be used in the self-developed project and the modules that need to be added;

② Self-designed additional modules on the virtual simulation platform;

③Use the DIP switch to select the module to be used, and configure the virtual simulation circuit diagram;

④ Write and debug the experimental driver, generate HEX files, and load the program to the virtual simulation CPU;

Observe the experimental results, if the virtual experiment effect is not achieved, go back to step ②, recheck whether it is a hardware configuration problem or a program problem, and proceed to the next step if the experimental effect is achieved;

⑤ Configure the experimental box training platform: compare the configured virtual simulation circuit diagram, toggle the dial switch to configure the existing modules of the experimental box, and build additional modules on the self-developed modules;

⑥ Select the serial port download mode or USB download mode by selecting the connection status of the DIP switch;

⑦ Download the control program to the experiment box;

⑧ Observe whether the experimental effect is achieved. If the expected effect is not achieved, go back to step ⑤ to check; until the desired effect appears.

The method of using the platform love will be described below through specific embodiments.

1. Users can independently complete an experiment by building modules independently.

Insert 8 LEDs and 8 440 ohm current-limiting resistors. The other end of the current-limiting resistors is connected to an I/O port with a Dupont wire, and the common terminal of the LEDs is grounded. Follow the instructions of the independent module to complete the marquee experiment.

2. Combining the resources on the training board of the experiment box and the circuit built in this module to complete innovative training tasks.

For example, use the infrared distance measuring module to measure the measured object, and use the seven-segment code LED display on the experimental training board to display the distance between the measured object and the sensor. When the distance between the measured object and the sensor is less than the set Alarm when set value.

The experimental training platform has display and sound modules. The infrared distance measuring module needs to be connected to the module designed by the user. After studying the circuit diagram of the display module, the display module can use the P0 and P1 ports through the dial switch, and toggle the enable switch of the module to make the display module in the enabled state. The sound module selects any port line of the P2 port through the dial switch, such as P21; the infrared distance measuring module has 3 connections, a ground wire, and a power line are respectively connected to the user-built module with Dupont wires The +5v and GND wiring pins in the area. The intermediate analog data output line is connected to P22 of the pin header of this module with a DuPont line, and the dial switch is used to make P22 in a connected state.

For other steps, follow the experimental steps in the instructions of the independent module to complete the experimental training experiment.

In this example, if the microcontroller used does not have an integrated AD conversion module. The A/D conversion circuit diagram provided by this experimental training platform can be retrieved and analyzed, and the analog output terminal of the infrared distance measuring module can be connected to an analog input terminal of the module.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (9)

1. an one-chip machine modular experiment training system based on virtual emulation platform, is characterized in that, including: virtual emulation portion Divide and experimental box real training part；

Described virtual emulation part includes: several independent Virtual Simulative Experiment circuit that experiment module each with experimental box matches； Overall Virtual Simulative Experiment circuit with the different experiments block combiner that experimental box matches；

Virtual Simulative Experiment is carried out by described independent Virtual Simulative Experiment circuit or overall Virtual Simulative Experiment circuit；Or Build required Virtual Simulative Experiment circuit by each independent Virtual Simulative Experiment circuit and carry out Virtual Simulative Experiment；

Described experimental box real training part includes: IC locking socket, is respectively provided with single-chip minimum system on described IC locking socket Module, numeral method module, LED light module, power module, USB download module, serial ports download module, data are deposited Storage module, data conversion module, clock module and independent development module；Multiple double pricking with needle draw single-chip microcomputer through toggle switch All pins, described numeral method module, LED light module, power module, USB download module, serial ports download mould Block, data memory module, data conversion module and clock module are connected with single-chip microcomputer respective pins by toggle switch respectively；Right Each module is equipped with the state of toggle switch during circuit diagram and the module use of corresponding module；

Each I/O mouth of described single-chip minimum system module connects toggle switch respectively, corresponding by selecting toggle switch to draw I/O mouth line, by change toggle switch wiring strategy, it is achieved different block combiner；

Described independent development module is built the experimental circuit of autonomous Design, by selecting toggle switch, by described experimental circuit It is connected with the I/O mouth line of single-chip minimum system module so that described experimental circuit enables.

A kind of one-chip machine modular experiment training system based on virtual emulation platform, is characterized in that, Also include: five line four phase step motor modules, four line bipolar stepping motor modules, RS-485 communication module, relay module, Lattice module, matrix keyboard module, Independent keys module, buzzer module, 138 decoding circuit modules, photosensitive module, temperature-sensitive Module, infrared module, temperature sensor module, LCD1602 module, TFT color screen module and traffic lights module；Above-mentioned module It is connected with single-chip minimum system module by toggle switch respectively；When each module enables, module indicating lamp is bright.

A kind of one-chip machine modular experiment training system based on virtual emulation platform, is characterized in that, The USB download module of described experimental box real training part and serial ports download module are minimum with single-chip microcomputer by 3 grades of toggle switch of 4 line respectively The I/O mouth line of system module connects, and by selecting the on-state of 43 grades of toggle switch of line, realizes USB downloading mode, string respectively Mouth downloading mode and normal use I/O mouth die formula.

A kind of one-chip machine modular experiment training system based on virtual emulation platform, is characterized in that, Described numeral method module includes dynamic charactron display unit and static charactron display unit；Described dynamic numeral method Unit includes:

The input of latch is connected with the P1 mouth of single-chip minimum system module through toggle switch Sleds2P1, the outfan of latch Connect with the section phase selection of 7 segment display, be connected through toggle switch Sled and 8 LED lights simultaneously；Described 7 segment display Position choosing is connected with the P0 mouth of single-chip minimum system module through toggle switch SledbitP0；The Enable Pin of latch is through toggle switch SLE is connected with power module；

When toggle switch SLE, Sleds2P1 connect with SledbitP0, complete the use of 7 segment display；Toggle switch SLE, When Sleds2P1, Sled connect, complete the exercise of horse race lamp.

A kind of one-chip machine modular experiment training system based on virtual emulation platform, is characterized in that, Described independent development module by tetra-I/O mouths of PO, P1, P2, P3 of single-chip minimum system module respectively through 48 toggle switch Draw 4 groups of 8 holding wires to be connected on 4 groups of 8 double pricking with needle；The experimental circuit of autonomous Design is provided in described independent development module Power supply and earth terminal.

A kind of one-chip machine modular experiment training system based on virtual emulation platform, is characterized in that, Described independent development module has the some groups of identical row's seats of structure, and each row's seat has some horizontally-arranged bars, each horizontally-arranged bar bag Including 5 row's bore, the row's bore on each horizontally-arranged bar described is electrically being interconnected, mutually isolated between some horizontally-arranged bars.

A kind of one-chip machine modular experiment training system based on virtual emulation platform, is characterized in that, When carrying out experimental real-training study, first pass through virtual emulation part and select or build Virtual Simulative Experiment circuit to carry out emulation experiment, After debugging successfully, in experimental box real training part, build side circuit according to Virtual Simulative Experiment circuit；Utilize emulation experiment circuit Side circuit is driven by driver, confirmatory experiment effect；If not reaching intended simulated effect, check side circuit The most consistent with Virtual Simulative Experiment circuit, check that component parameter used is the most accurate.

8. the user of an one-chip machine modular experiment training system based on virtual emulation platform as claimed in claim 1 Method, is characterized in that, including:

(1) select or build Virtual Simulative Experiment circuit by virtual emulation part, write experimental circuit driver, generate HEX file, carries out emulation experiment；

(2), after the success of Virtual Simulative Experiment circuit debugging, in experimental box real training part, reality is built according to Virtual Simulative Experiment circuit Border circuit；Determining the required I/O mouth connected of each experiment module, using toggle switch is that each experiment module distributes I/O Mouthful；

(3) by selecting the connection status of toggle switch, serial ports downloading mode or USB downloading mode are selected；Carry out experiment electricity Road driver is downloaded；

(4) toggle switch that fluctuates on experimental real-training platform makes corresponding experiment module be in enabled state；

(5) confirmatory experiment effect；If not reaching intended simulated effect, check that side circuit is the most electric with Virtual Simulative Experiment Road is consistent, and the most accurately and side circuit driver is the most accurate to check component parameter used.

A kind of user of one-chip machine modular experiment training system based on virtual emulation platform Method, is characterized in that, when carrying out autonomous Design test, determines the experiment module needed for experiment, needs for the distribution of each experiment module I/O mouth to be connected；

For experiment module existing on experimental real-training platform, it is connected to corresponding I/O mouth by toggle switch, stirs toggle switch Above-mentioned module is enabled；

For the experiment module of autonomous Design, use respectively Du Pont's line by the power line of autonomous Design module and earth lead with independently open Power supply and the ground connection pricking with needle of sending out module connect, by simulation DOL Data Output Line in the middle of autonomous Design module by toggle switch with autonomous The I/O mouth line of development module connects；Stirring toggle switch makes above-mentioned I/O mouth be in connected state.