Innovative integrated development training device for single-chip microcomputer

ZN-239PX innovative microcontroller integrated development training device 1.
Overview
1. Easy entry, concise but not simple: In order to make entry easy, we adopt a simple and easy-to-understand layout design, starting from a basic marquee to let you seamlessly Cut into teaching. Most of the modules are hollowed out on the back under the premise of ensuring safety. This allows you to let students see at a glance and can touch it, which is very important. Because we know the importance of perceptual knowledge.
2. Ergonomic, beautiful and comfortable: the module is placed flat structure, so that the line of sight tends to naturally downward, just like reading and writing in normal times. It is slightly inclined near the user side, which makes the operation more convenient. When looking up at the same time, the line of sight is unobstructed. You can listen to the lecture conveniently, and the teacher can also observe the experiment.
3. A high degree of openness and innovation: using modular design, we do not simply design modules separately, but comprehensively consider the connection, possibility, and functionality of the modules, and provide classic training projects. We recommend that users use Highly open modules, design your own experimental projects.
4. Close to reality and easy to expand: deeply understand the importance of combining teaching with actual production. There are dozens of training packages specially designed.

2. Technical performance:
1. Input power: AC220V±10% 50Hz
2. Working environment: temperature -10~+40℃ relative humidity＜85%(25℃)
3. Device capacity: 200VA
4. Weight: 100kg
5. Dimensions: 1600×750×1100mm
3. Functional characteristics of each functional module of this equipment
1. Mainframe module
ZN-239PX innovative single-chip integrated development and training device The single-chip microcomputer adopts Atmel's AT89S52 . The single-chip microcomputer is equipped with 256Byte RAM and 8KByte FLASH, three 16-bit timers, two data pointers, and a watchdog circuit is integrated on the chip. 64KRAM expansion space, 64KROM expansion space; 32 IO ports, 6 vector interrupt sources; 0_{33MHz working frequency, three-level program encryption function; working voltage 4.0V} 5.5V. The use of DIP40 package is convenient for chip replacement and simulation. And it is designed with an in-system download design interface, which can be easily programmed through a USB downloader without removing the single-chip microcomputer from the circuit.
There is also a serial communication interface on the module. The interface has been added to the boost circuit and can communicate directly with the computer. The Philips MCU and Macrocrystalline MCU can also download programs through this port. A manual reset button is added to the reset circuit, which can be directly reset. There is also an active buzzer drive circuit on the module, which can emit a sound directly to a fixed level.
2. Power supply module
ZN-239PX innovative single-chip integrated development training device The power supply module adopts linear power supply and switching power supply. Chips such as single-chip microcomputers use linear power supply, which can effectively reduce program runaway caused by power interference. High-power devices such as motors are powered by switching power supplies to ensure that sufficient power is provided. The power supply adopts the leakage protection switch as the main control, which is safe and reliable. The low-voltage electricity is controlled separately with the boat-shaped switch, and the mains and low-voltage electricity are controlled separately. The module has three groups of independent low-voltage power supplies, of which two groups are positive and negative dual power outputs. An AC220 output board is placed on the panel, and three instruments can be connected at the same time. Each power supply has a fuse for overload protection.
3. The emulator module is
equipped with a high-performance single-chip simulator, which can simulate MCS51 series single-chip microcomputers with full functions, and can also simulate software; the software is independently developed by China, which can well support Chinese, support keyword prompts, and automatically complete functions such as symbol matching. . Supports 64K program address breakpoints, 64K source program effective line breakpoints and 64K temporary breakpoints, and the status of the internal registers of the microcontroller is clear at a glance. The host computer and the computer adopt the popular USB interface.
4. Display module
This module no matter from the basic display element LED light-emitting diode, or toAdvanced LCD displays are included. The specific configuration is 8-bit marquee (logic level indication), 8-bit digital tube dynamic display, 16×32 dot matrix LED screen, 1602 character LCD screen, 128×64 drawing LCD screen. The display devices commonly used in the single-chip microcomputer are all included, so that the learner can access all the display schemes, and can be handy when designing the man-machine interface.
5. Relay module The
relay is a commonly used actuator and a commonly used isolation component. It can use low voltage to control high voltage circuits and remotely switch the status of strong current circuits. At the same time, its actuator is a coil, which will be Produce electromagnetic interference. For this reason, the relay module adds optoelectronic isolation measures on the basis of the integrated drive circuit. The module has a total of 6 relays, and the switch contacts of each relay are all led out and clearly marked; each relay is also equipped with a working indicator, which makes it clear when the relay is energized. Two of the six groups of relays are AC220-controlled relays, which can control the forward, reverse and stop of the AC motor, and can be connected to electronic wires through the conversion head. The other four groups are output for electronic connection sockets. Relay contact capacity 250V/6A, DC28V/12A
6. Instruction module
Placed on the instruction module are the input components commonly used by single-chip microcomputers. Among them, there are 8 independent keyboard interfaces, 8 8-bit switch inputs, and 4 rectangular keyboard interfaces, which can meet the requirements Students have practical training requirements from basic to advanced, simple to complex. If the user needs more buttons or a more complex design, you can use the PS2 keyboard and mouse interface of this module for expansion.
7. ADC/DAC module
Two conversion chips ADC0809 and DAC0832 are designed on the ADC/DAC module. In order to facilitate debugging of programs and hardware, three functional sub-modules are onboard: 0-5V analog voltage output, 8-level LED level indicator and active clock generator. The ADC0809 experiment can use an active clock generator as the chip clock, 0-5V analog voltage output can be used as the analog quantity, and the 8-level LED level indicator can be used as an indicator of the analog quantity; in the DAC0832 experiment, the chip’s The output is connected to the 8-level LED level indicator, and it is clear at a glance whether the conversion result is normal.
8. AC and DC motor control module
This module can complete the control experiment of two kinds of motors, namely 24V DC geared motor and 220V AC geared motor. A photoelectric switch counter is placed under the turntable of each motor, and the single-chip microcomputer can be used to sense its position and how many revolutions it has rotated. Each motor control circuit is equipped with an over-travel protection input port, which can effectively protect the safety of the motor and mechanism when it is combined with the horizontal moving device for experiments.
9. Stepper motor control module
This module is equipped with a 24V two-phase stepper motor and high-power stepper motor driver. The module changes the motor's axis-rotation operation mode and adopts a horizontal movement mechanism, which can change the motor's axis rotation to horizontal linear motion, and is indicated by the scale of an aluminum ruler. This module can also be used as a closed-loop control experimental project, because the motion mechanism is equipped with a closed-loop element that senses distance. At the same time, an over-travel protection circuit is designed. When the mechanism reaches a program-unknowable state, the motor power supply can be automatically turned off to avoid damage to the mechanism over-travel. The linear motion mechanism is equipped with left and right limit output terminals for the single-chip microcomputer to query the status.
10. Sensor adapter module (4 sensor interfaces) The
sensor adapter module is a circuit unit designed for sensor connection and electrical isolation. The unit has two groups of 16 optically isolated IO ports, each of which is optically isolated IO Both ports can imitate PLC and connect with 24V power supply sensors. And equipped with four-way sensor conversion interface for the connection of industrial sensors.
11. The expansion module
is still worth learning because of the 82C55's control method, and it is still present in many textbooks. The expansion module can meet the needs of experiments; all three ports of the 82C55 are led out and can be connected by electronic connections or Connect with flat cable. The control terminal and the data communication port are arranged together, and the overall layout is beautiful and generous. There is also a 74LS245 chip, which can be used to combine with 82C55 to complete different experimental functions.
12. Temperature sensor module
The module is equipped with two chip-type temperature sensors: digital temperature sensor 18B20 and analog temperature sensor LM35. The LM35 device is also equipped with an operational amplifier, and the amplified analog quantity can improve the measurement accuracy. Each sensor has a transparent shell reinforced protection, there are high-power heating resistors, heating indicators and so on. The working status is clear. It can be used for constant temperature control, thermostat and other experiments.
13. The intelligent material handling device is
equipped with a dual-axis robot as the assembly actuator. It has the ability to execute in both X-axis and Y-axis directions, and can complete functions such as intelligent grabbing and unloading; it is equipped with a travel switch, photoelectric sensor, and optical fiber sensor. It can ensure the accurate positioning of each actuator; when it exceeds a large stroke, it has hardware automatic protection function to ensure system safety and personal safety; this device is a universal modular multifunctional device, and each functional port is completely open, and it can pass Different wiring completes various functions, providing a broad space for students' innovative design.
4. Configuration list


5. Training items.
Training 1. Light flashing training.
Training 2. Marquee training.
Training 3. Independent key input training.
Training 4. Optical isolation input and output training.
Training 5. Metal detection
training. 6. Dynamic digital tube display training
training seven matrix keyboard interface training
training eight relay isolation control training
training training nine buzzer performance training
training training ten 8255 chip expansion IO training
training eleven-character LCD module control Training
Training Twelve LCD Module Control Training
Training Thirteen Dot Matrix LED Screen Chinese Character Display Training
Training Training Fourteen AD Conversion Training
Training Training Fifteen DA Conversion Training
Training Training Sixteen LM35 Temperature Sensor Acquisition Experiment
Training seventeen single-bus temperature sensor acquisition training
training eighteen AC/DC geared motor control training
training nineteen stepping motor open-loop control training
training training twenty RS232 communication training
training twenty-one PS2 keyboard communication Experiment
Training 21 static digital tube display experiment
Training 22 74LS164 Serial in and out experiment
Training 23 74LS165 Parallel in and serial out experiment
Training 24 IIC bus IC card storage Experiment
training 25 IIC bus real-time clock experiment
training twenty-six IIC bus EEPROM memory test
training twenty-seven external interrupt photoelectric counting control motor training
training twenty-eight motor control timer interrupt training
training twenty-nine closed loop AC and DC motor test system
solid Training 30 closed-loop stepper motor system experiment,
training 31 constant temperature room control system experiment,
training 32 car system control training,
training 33 intelligent material handling device training:
1. Sensor technology training
2. DC Geared motor application training
3. Pneumatic circuit application training
4. Screw drive mechanism application training
5. Linear motion unit positioning control training
6. Mechanical fault detection and troubleshooting training Pneumatic solenoid valve control experiment