CN108564859A - SCM Based Multifunctional experiment development system - Google Patents

Abstract

The invention discloses a single-chip microcomputer-based multifunctional experiment development system, which relates to the technical field of single-chip microcomputer applications. The multifunctional experimental development system based on the single-chip microcomputer includes a single-chip microcomputer module, and a power input module, a keyboard input module, a liquid crystal display module, a serial voice module, a motor drive and a speed measurement module, and an LED dimming module respectively connected to the single-chip microcomputer module , serial port download module, RFID communication module, WIFI communication module, wireless communication module, GSM SMS communication module and ZigBee communication module, the experimental development system has rich integrated resources and diversified functions, which is conducive to the in-depth study and development of single-chip technology; Each module is designed and selected to make the whole system small in size and low in cost, making it easy to use the laboratory space for laboratory construction.

Description

Multifunctional Experimental Development System Based on Single Chip Computer

technical field

The invention belongs to the technical field of single-chip microcomputer applications, and in particular relates to a multi-functional experiment development system based on single-chip microcomputers.

Background technique

SCM technology has gone through more than 20 years of development since its development. The development of single-chip microcomputer technology is guided by the development of microprocessor technology and VLSI technology, driven by a wide range of application fields, showing a more individual development trend than microprocessors. As single-chip microcomputer technology has been more and more widely used in various fields, many integrated circuit manufacturers have launched various types of single-chip microcomputers one after another. With its superior performance, mature technology, high reliability and high cost performance, single-chip microcomputers quickly occupy the electronic market. Industry Automation Market. Therefore, single-chip microcomputer technology has become an essential skill for many engineering students majoring in electronics, measurement and control, automation, and communication. Boards also came into being.

Most colleges and universities in China use experimental boxes to teach and develop single-chip microcomputers in the course experiments of single-chip microcomputers. On the one hand, the experimental development system is displayed in the form of experimental boxes, focusing on software experiments, which is not conducive to students mastering the hardware structure. How to carry out system design and comprehensive debugging of software and hardware; on the other hand, the cost of the test box is high, the instrument is heavy, large in size, less integrated resources and single in function; the space of the test box is large, and the laboratory space is limited, which is not convenient for the construction of the laboratory. And it is not conducive to the complex control based on single-chip microcomputer and the deep learning and development of single-chip microcomputer. Currently popular system development boards on the market generally have defects such as less integrated hardware resources and limited implementation functions, which are only suitable for elementary entry learning of single-chip microcomputers and are not enough to support more in-depth development and use based on single-chip microcomputers.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a single-chip microcomputer-based multifunctional experiment development system.

The present invention solves the above-mentioned technical problems through the following technical solutions: a multifunctional experimental development system based on a single-chip microcomputer, including a single-chip microcomputer module, and a power input module, a keyboard input module, and a liquid crystal display module respectively connected to the single-chip microcomputer module , serial voice module, motor drive and speed measurement module, LED dimming module, serial download module, RFID communication module, WIFI communication module, wireless communication module, GSM SMS communication module and ZigBee communication module.

Further, the single-chip microcomputer module is mainly STC15W4K48S4 single-chip microcomputer module.

Further, the liquid crystal display module adopts a color liquid crystal screen with a resolution of 176*220 through serial port communication, and has a touch input.

Further, the serial voice module adopts a Chinese speech synthesis module with a model number of SYN6288; the Chinese speech synthesis module adopts a standard 2.54mm pin, is small in size, and uses serial communication.

Further, the input end of the motor drive and speed measurement module is connected to the I/O port of the single-chip microcomputer module through a photoelectric isolation module.

Further, the motor drive and speed measurement module adopts a motor drive chip of model L298P, which integrates 2 H-type drive circuits inside, the output current can reach 2A, and the maximum working voltage can reach 50V, which can directly drive two ordinary DC motors or 1 stepper motor.

Further, the LED dimming module uses the A/D conversion module inside the single-chip microcomputer module, combined with the PWM module inside the single-chip microcomputer module, to perform PWM dimming on the LED lamp.

Further, the RFID communication module communicates with the single-chip microcomputer module through the serial port, and is used for reading and writing the RFID card, so that students can learn and understand the knowledge of reading and writing the RFID card.

Further, the WIFI communication module adopts a serial WIFI wireless module of the model ESP8266. The serial WIFI wireless module is small in size and can be easily embedded into any product. It has powerful functions and a built-in LWIP protocol; perfect, concise and efficient AT commands; supports three modes : AP, STA, AP+STA coexistence mode, making programming easier.

Further, the wireless communication module adopts a 2.4G wireless module modeled as NRF24L01, which can be applied in the field of short-distance communication, such as the control of small quadcopters, the control of smart cars, and the like.

Further, described GSM short message communication module adopts the GPRS module that model is SIM800L, and this GPRS module communicates with described single-chip microcomputer module through serial port, supports the mobile phone card of China Mobile and China Unicom, can realize remote monitoring by mobile phone short message.

Further, the ZigBee communication module adopts the model CC2530 Internet of Things special chip, so that students can learn and understand ZigBee communication knowledge.

Further, an operating platform for a single-chip microcomputer experimental development system includes multiple sets of single-chip microcomputer experimental development devices and mouth-shaped brackets; each set of single-chip microcomputer experimental development devices includes a multi-functional experimental development system based on single-chip microcomputers, two DC speed measuring motors and an external power supply ; The two DC speed measuring motors are respectively connected with the motor drive and the speed measuring module of the multi-function experimental development system based on the single-chip microcomputer, and the external power supply is connected with the power input module of the multi-functional experimental development system based on the single-chip microcomputer; The tachometer motor is arranged on the top of the mouth-shaped support, the multi-functional experimental development system based on the single-chip microcomputer is arranged on the front and rear sides of the mouth-shaped support, and the external power supply is arranged in the mouth-shaped support. Multiple sets of single-chip microcomputer experimental development devices can be installed on the same mouth-shaped bracket, which reduces the space occupied by the entire set of experimental development devices and facilitates the construction of single-chip microcomputer laboratories.

Further, the two DC tachometer motors are photoelectric DC motors and Hall DC motors.

Compared with the prior art, the multifunctional experimental development system based on the single-chip microcomputer provided by the present invention includes a single-chip microcomputer module, and a power input module, a keyboard input module, a liquid crystal display module, a serial voice module, Motor drive and speed measurement module, LED dimming module, serial port download module, RFID communication module, WIFI communication module, wireless communication module, GSM SMS communication module and ZigBee communication module, the experimental development system has rich integrated resources and diversified functions, which is beneficial to In-depth study and development of single-chip microcomputer technology; and design and selection of each module, so that the whole system is small in size and low in cost, which is convenient for using laboratory space and carrying out laboratory construction; the experimental development system of the present invention is not displayed in the form of an experimental box , so that students understand the hardware structure of the system, it is convenient for students to master the appearance design and layout design of the hardware structure, and better carry out system design and comprehensive debugging of software and hardware.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only an embodiment of the present invention. Ordinary technicians can also obtain other drawings based on these drawings without paying creative work.

Fig. 1 is a block diagram of the present invention based on a single-chip multifunctional experiment development system;

Fig. 2 is the front view of the operating platform of a kind of single-chip microcomputer experimental development system of the present invention;

Fig. 3 is the top view of the operating platform of a kind of single-chip microcomputer experimental development system of the present invention

Fig. 4 is the left side view of the operation platform of a kind of single-chip microcomputer experimental development system of the present invention;

Among them: 1-photoelectric DC motor, 2-Hall DC motor, 3-multifunctional experiment development system based on single-chip microcomputer, 4-mouth bracket, 5-external power supply.

Detailed ways

The technical solutions in the present invention are clearly and completely described below in combination with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in Figure 1, a kind of multifunctional experiment development system based on single-chip microcomputer provided by the present invention comprises a single-chip microcomputer module, and a power input module connected with the single-chip microcomputer module, a keyboard input module, a liquid crystal display module, a serial voice module, a motor Driver and speed measurement module, LED dimming module, serial port download module, RFID communication module, WIFI communication module, wireless communication module, GSM SMS communication module and ZigBee communication module.

The single-chip microcomputer module is mainly STC15W4K48S4 single-chip microcomputer module. The STC15W4K48S4 single-chip microcomputer adopts 1T (clock/machine cycle) enhanced 8051 core, which is 7 to 12 times faster than the traditional 8051 (20% faster than the early 1T); the voltage range is 5.5 V～2.4V; built-in 4096 (4K) bytes on-chip RAM data memory; 8/16/24/32/40/48/56/60/61K bytes on-chip Flash program memory, with more than 100,000 erasing times ; Ultra-high-speed four serial ports/UART, four completely independent high-speed asynchronous serial communication ports, time-sharing switching can be used as 9 groups of serial ports; low power consumption design: low-speed mode, idle mode, power-down mode (can be controlled by external interrupt or internal Power-down wake-up timer wake-up); no external reset is required, 16-level reset threshold voltage is optional when ISP programming, built-in high-reliability reset circuit; no external crystal oscillator is required, the internal clock is optional from 5MHz to 35MHz (equivalent to ordinary 8051: 60 ~420MHz), internal high-precision R/C clock (±0.3%), ±1% temperature drift (-40°C~+85°C), temperature drift at room temperature ±0.6% (-20°C~+65°C); ISP /IAP, programmable in the system/programmable in the application, no programmer/emulator required; high-speed ADC, 8-channel 10-bit, speed up to 300,000 times/s; 6-channel PWM can also be used as 6-channel D/A; 6-channel capture/comparison unit (CCP/PCA/PWM); large-capacity on-chip EEPROM function, erase and write times more than 100,000 times; hardware watchdog (WDT).

The liquid crystal display module adopts a 176*220 resolution color LCD screen with serial port communication, and has a touch input function; this type of color LCD screen displays a relatively large amount of information, directly replacing the traditional 1602 or 12864 monochrome LCD screen.

The serial port speech module adopts the Chinese speech synthesis module of model SYN6288; the Chinese speech synthesis module adopts standard 2.54mm pins, small in size, and uses serial port communication; it is performing Chinese speech synthesis (TTS), without recording, and automatically recognizes common words And polyphonic characters, including a variety of commonly used prompt tones and multi-segment background music, which can be played synchronously with the voice, the speech rate and volume are adjustable, no complicated programming is required, and it has a working indicator light, which is especially suitable for product development and experimental use.

The input end of the motor drive and speed measurement module is connected to the I/O port of the single-chip microcomputer module through the photoelectric isolation module, which improves the reliability of the experimental development system. With the timer inside the single-chip microcomputer module, the speed measurement and speed regulation of ordinary DC motors can be conveniently performed. .

The motor drive and speed measurement module adopts the motor drive chip model L298P, which integrates 2 H-type drive circuits, the output current can reach 2A, and the maximum working voltage can reach 50V, which can directly drive 2 ordinary DC motors or 1 stepper motor.

The LED dimming module uses the A/D conversion module inside the single-chip microcomputer module, combined with the PWM module inside the single-chip microcomputer module, to perform PWM dimming on the LED lamp.

The RFID communication module communicates with the single-chip microcomputer module through the serial port, and is used to read and write the RFID card, so that students can learn and understand the knowledge of the read and write operation of the RFID card.

The WIFI communication module adopts the serial WIFI wireless module of the model ESP8266. The serial WIFI wireless module is small in size and easy to embed into any product. It has powerful functions and a built-in LWIP protocol; it has perfect, concise and efficient AT commands; AP+STA coexistence mode makes programming easier.

The wireless communication module adopts the 2.4G wireless module of the model NRF24L01, which can be applied in the field of short-distance communication, such as the control of small quadcopters, the control of smart cars, etc.

The GSM short message communication module adopts the GPRS module of the model SIM800L, which communicates with the single-chip microcomputer module through the serial port, supports mobile phone cards of China Mobile and China Unicom, and can realize remote monitoring through mobile phone short messages.

The ZigBee communication module adopts the model CC2530 IoT dedicated chip to enable students to learn and understand ZigBee communication knowledge.

The power input module is connected with an external power supply to provide power for the multifunctional experimental development system; the keyboard input module is a key operation module composed of 12 keys, which is used for function selection and parameter setting, and the multifunctional experimental development system is also Function selection and parameter setting can be performed through the touch input function of the liquid crystal display module.

As shown in Fig. 2 to Fig. 4, the operation platform of a kind of single-chip microcomputer experimental development system includes four sets of single-chip microcomputer experimental development devices and mouth support 4; each set of single-chip microcomputer experimental development devices includes a multi-functional experimental development system 3 based on single-chip microcomputer , two DC speed measuring motors and an external power supply 5; two DC speed measuring motors are respectively connected with the motor drive and the speed measuring module of the multifunctional experimental development system 3 based on the single chip microcomputer, and the external power supply 5 is connected with the multifunctional experimental development system 3 based on the single chip microcomputer The power input module is connected; 8 DC speed measuring motors are all arranged on the top of the mouth support 4, 4 multi-functional experimental development systems 3 based on single-chip microcomputer are respectively arranged on the front and rear sides of the mouth support 4, and 2 external power supplies 5 are arranged on the In the mouth shape bracket 4. Multiple sets of single-chip microcomputer experimental development devices (four sets are installed in this embodiment) can be installed on the same mouth-shaped support 4, and four computers can be equipped on the four sides (left and right sides, front and rear sides) of the mouth-shaped support 4 correspondingly to meet the four requirements at the same time. One student operates at the same time, which reduces the space occupied by the whole experimental development device and facilitates the construction of the single-chip microcomputer laboratory.

The two DC tachometer motors are photoelectric DC motor 1 and Hall DC motor 2.

The multifunctional experimental development system based on the single-chip microcomputer of the present invention integrates a keyboard input module, a liquid crystal display module, a serial voice module, a motor drive and speed measurement module, an LED dimming module, a serial download module, an RFID communication module, a WIFI communication module, and a wireless communication module. module, GSM SMS communication module and ZigBee communication module, with rich resources and diversified functions, learners connect different modules with corresponding equipment or devices, such as motor drive and speed measurement module connected with DC speed measurement motor, RFID communication module with RFID card Connect to realize the operation of various functions, which is conducive to the in-depth study and development of single-chip technology; at the same time, the mouth-shaped bracket is used to install multiple sets of single-chip experimental development devices together, which saves space and facilitates laboratory planning.

What is disclosed above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field can easily think of changes or modifications within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention.

Claims (10)

1. a multifunctional experimental development system based on single-chip microcomputer, it is characterized in that: comprise single-chip microcomputer module, and the power input module that is connected with described single-chip microcomputer module, keyboard input module, liquid crystal display module, serial port voice module, motor drive and speed measuring module, LED dimming module, serial port download module, RFID communication module, WIFI communication module, wireless communication module, GSM SMS communication module and ZigBee communication module. 2. the multifunctional experiment development system based on single-chip microcomputer as claimed in claim 1, is characterized in that: described single-chip microcomputer module is the main single-chip microcomputer module that is STC15W4K48S4. 3. the multifunctional experiment development system based on single-chip microcomputer as claimed in claim 1, is characterized in that: described serial port speech module adopts the Chinese speech synthesis module that model is SYN6288. 4. The multifunctional experimental development system based on a single-chip microcomputer as claimed in claim 1, wherein the input end of the motor drive and speed measurement module is connected with the I/O port of the single-chip microcomputer module through a photoelectric isolation module. 5. the multi-functional experimental development system based on single-chip microcomputer as claimed in claim 1 or 4, is characterized in that: described motor drive and speed measuring module adopt the motor drive chip that model is L298P, and its inside integrates 2 road H-type driving circuits, The output current is up to 2A, and the maximum working voltage is up to 50V, which can directly drive two ordinary DC motors or one stepping motor. 6. The multifunctional experimental development system based on single-chip microcomputer as claimed in claim 1, wherein: said WIFI communication module adopts a serial port WIFI wireless module whose model is ESP8266; said wireless communication module adopts a 2.4G wireless module whose model is NRF24L01 module. 7. the multifunctional experiment development system based on single-chip microcomputer as claimed in claim 1, is characterized in that: described GSM short message communication module adopts the GPRS module that model is SIM800L. 8. The multifunctional experimental development system based on single-chip microcomputer as claimed in claim 1, wherein: said ZigBee communication module adopts a model CC2530 Internet of Things special chip. 9. An operating platform for a single-chip microcomputer experimental development system, characterized in that: it includes multiple sets of single-chip microcomputer experimental development devices and mouth-shaped supports; each set of single-chip experimental development devices includes a multi-functional experimental development system based on single-chip microcomputers, two DC speed measuring motors and an external power supply; the two DC speed-measuring motors are respectively connected with the motor drive and the speed-measuring module of the multifunctional experimental development system based on the single-chip microcomputer, and the external power supply is connected with the power input module of the multifunctional experimental development system based on the single-chip microcomputer Connection; the DC speed measuring motor is arranged on the top of the mouth-shaped bracket, the multi-functional experimental development system based on the single-chip microcomputer is arranged on the front and rear sides of the mouth-shaped bracket, and the external power supply is arranged in the mouth-shaped bracket. 10. The operating platform of the single-chip microcomputer experimental development system as claimed in claim 9, wherein the two DC speed measuring motors are photoelectric DC motors and Hall DC motors.