CN205122047U

CN205122047U - Portable singlechip experimental development device

Info

Publication number: CN205122047U
Application number: CN201520758797.1U
Authority: CN
Inventors: 王胤霖
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-09-29
Filing date: 2015-09-29
Publication date: 2016-03-30
Anticipated expiration: 2025-09-29

Abstract

The utility model discloses a portable singlechip experimental development device, including the minimum system of singlechip and with the minimum system electric connection's of singlechip the minimum system of liquid crystal module, DC power supply module, 1302 clocks and the online download module of 24C02 storage module, USB download module, serial communication and ISP, charactron display module, ATMEGA8, 44 keyboard modules, 386 low frequency power amplifier module and 18B20 temperature test and infrared module. The utility model discloses can also can outwards being spreaded by the extension end of module simultaneously according to experiment needs interconnect between the module, forming different system architectures, every module can all independent and external headtotail moreover, and the user can be according to different needs experiment. The advantage of the traditional proof box of the device set, in addition modularization and concentrationization as long as it just can anytime and anywhere carry out the singlechip and study to have a computer to add the device, have improved the learning efficiency.

Description

A kind of portable single-chip experimental development device

Technical field

The utility model relates to college teaching equipment technical field, particularly relates to a kind of portable single-chip experimental development device.

Background technology

" single-chip microcomputer basis ", " principle and application of computer " are the important technical basis classes of science and technology subject, are the subjects that practicality and practicality are very strong.Its final goal is the ability of the hardware adaptations of cultivating Engineering Students.Therefore, in teaching, the quality of experimental system is by the cultivation of the application power of the teaching efficiency and student that directly affect this course, has critical effect to student's development in the future.

Due to the development of technology, constantly update the content of courses, eliminate part advanced not, to adapt to the needs of society to the talent.But the dependence of single chip madine to practice is larger, the limitation of laboratory facilities is key factors of restriction teaching level.In order to improve the teaching level of following each relevant speciality " single-chip microcomputer basis ", " principle and application of computer " class curriculum experiment and practice, in the urgent need in the research work teaching method of novel Microcomputer Experiments system and relevant practice thereof being done to some explorations on the requirement basis meeting current and following " single-chip microcomputer is basic ", " principle and application of computer " class course teaching.

Because singlechip technology is used widely in enterprises and institutions, increasing school using single chip madine as a required course, lay a solid foundation for university student moves towards job.Current, single-chip microcomputer Application of Microcomputer class course is in the transitional period.In 20 years of past, single-chip microcomputer market and demand are all based on 8 machines.Recent years, the Embedded Application of 16,32 single-chip microcomputers is in the trend increased rapidly.8 single-chip microcomputers are high with its cost performance, and make its status be difficult to shake.8,16,32 single-chip microcomputers are the common recognition of industry by coexisting in quite over a long time, and the stable and course location of single chip computer teaching course content is accurately vital.Rapidly, the feature of course is that practicality is very strong, and it needs the cooperation, particularly experiment porch such as teacher, teaching material, experiment apparatus, needs larger input in singlechip technology development.Teacher will have suitable scientific research experience and application background, and can by the gained of scientific research, and implement in the explanation of course to the understanding of state-of-the-art technology, and these have suitable difficulty.

A lot of colleges and universities and some Zhong Zhi universities and colleges all have the laboratory of oneself now, and experimental facilities is also comparatively perfect.But the defect of laboratory also existence itself, just such as in order to strengthen management, classmates can only the time can touch test chamber apparatus at school.And the class hour of school schedules is limited, the practice calls of classmates cannot be met far away.So it is the key learning singlechip technology well that classmates how could be allowed more to carry out testing.

Utility model content

Because the above-mentioned defect of prior art, technical problem to be solved in the utility model is to provide a kind of portable single-chip experimental development device, the advantage of this device sets traditional experiment case, in addition modularization and enrichment.As long as have a computing machine to add this device classmates can carry out single-chip learning anywhere or anytime.For classmates win more learning time, improve the learning efficiency of classmates.

For achieving the above object, the utility model provides a kind of portable single-chip experimental development device, it is characterized in that: the Liquid Crystal Module comprising single-chip minimum system and be electrically connected with single-chip minimum system, DC power supplier, 1302 clocks and 24C02 memory module, USB download module, serial communication and ISP download online module, numeral method module, ATMEGA8 minimum system, 4*4 Keysheet module, 386 low-frequency power amplifier modules and 18B20 temperature test and infrared module.

Above-mentioned a kind of portable single-chip experimental development device, is characterized in that: described Liquid Crystal Module is 128*64 and 1602 Liquid Crystal Modules.

Above-mentioned a kind of portable single-chip experimental development device, is characterized in that: described numeral method module is 6 dynamic charactron display modules.

Above-mentioned a kind of portable single-chip experimental development device, is characterized in that: described single-chip minimum system adopts AT89S52 single-chip microcomputer to be main control chip.

Above-mentioned a kind of portable single-chip experimental development device, is characterized in that: described USB download module adopts ATMEGA8 as main control chip.

The beneficial effects of the utility model are:

" the portable single-chip experimental development device " of the utility model development is made up of 11 basic modules, can experimentally need to be interconnected between module, also outwards can be spreaded by the expansion end of module simultaneously, form different system architectures, for scientific research is used.Modules is all design for the knowledge point of electric specialty, can meet the requirement of different experiments.And each module can independently be connected with ambient systems, user can need to test according to difference.The advantage of this device sets traditional experiment case, in addition modularization and enrichment.As long as have a computing machine to add this device classmates can carry out single-chip learning anywhere or anytime.For classmates win more learning time, improve the learning efficiency of classmates.

Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.

Accompanying drawing explanation

Fig. 1 is single-chip experimental development device one-piece construction block diagram of the present utility model;

Fig. 2 is single-chip experimental development device singlechip minimum system circuit schematic diagram of the present utility model;

Fig. 3 is single-chip experimental development device ISP download online modular circuit schematic diagram of the present utility model;

Fig. 4 is single-chip experimental development device USB download module circuit theory diagrams of the present utility model;

Fig. 5 is single-chip experimental development device serial communication modular circuit theory diagrams of the present utility model;

Fig. 6 is single-chip experimental development device 386 low-frequency power amplifier modular circuit schematic diagram of the present utility model;

Fig. 7 is single-chip experimental development device DS1302 clock module circuit theory diagrams of the present utility model;

Fig. 8 is single-chip experimental development device LCD module circuit schematic diagram of the present utility model;

Fig. 9 is single-chip experimental development device 24C02 memory module circuit theory diagrams of the present utility model.

Embodiment

As shown in Figure 1, a kind of portable single-chip experimental development device, is characterized in that: the Liquid Crystal Module 2 comprising single-chip minimum system 1 and be electrically connected with single-chip minimum system 1, DC power supplier 3,1302 clock and 24C02 memory module 4, USB download module 5, serial communication and ISP download online module 6, numeral method module 7, ATMEGA8 minimum system 8,4*4 Keysheet module 9,386 low-frequency power amplifier module 10 and 18B20 temperature test and infrared module 11.

As shown in Figure 2, be single-chip minimum system 1 circuit theory diagrams.In the present embodiment, described single-chip minimum system 1 adopts AT89S52 single-chip microcomputer to be main control chip.The compatible AVR series monolithic of this chip, such as: ATMEGA16 and ATMEGA8.Reset circuit adopts toggle switch can switch between two kinds of series monolithics.Because AVR series monolithic pin is different from 51 series, system adopts a change-over panel to realize conversion, is user-friendly to.System is drawn four groups of I/O mouths and is facilitated user to carry out Function Extension.

As shown in Figure 3, be ISP download online module 6 circuit theory diagrams.ISP (In-SystemProgramming) in-system programmable components, blank device on finger circuit board can be programmed and be write final user's code, and do not need to take off device from circuit board, device by programming also can be wiped by ISP mode or programme.ISP technology is future thrust.This downloader can the programming of compatible 51 series and AVR series monolithic chip.

As shown in Figure 4, be USB download module 5 circuit theory diagrams.Usb downloads and adopts ATMEGA8 as main control chip, achieves computing machine usb and downloads, and can support that 51 series and AVR series monolithic are downloaded.Overcome the feature that modern notebook computers does not have parallel port, facilitate different user to learn.

As shown in Figure 5, be serial communication modular circuit theory diagrams.51 single-chip microcomputers have the serial communication interface of a full duplex, so can carry out serial communication easily between single-chip microcomputer and computer.Will meet some requirements when carrying out serial communication, the serial ports of such as computer is RS232 level, and the serial ports of single-chip microcomputer is Transistor-Transistor Logic level, must have a level shifting circuit between the two, can carry out analog-converted with several triode.The level signal that the P31 of single-chip microcomputer exports allows 9012 conductings. signal is delivered to 232 serial ports. thus allow the signal of single-chip microcomputer complete to be input to computer.The TLL level that computer exports passes through 4148 to ground through R51. negative level signal again through 3 pin. thus protection 9013 is not buckled bad.Positive level signal arrives triode.Thus the signal completing computer delivers to single-chip microcomputer.This module only uses 10 devices to replace max232 to achieve level conversion, and system cost is saved to greatest extent.

As shown in Figure 6, be 386 low-frequency power amplifier module 10 circuit theory diagrams.LM386 is the power amplifier designed by special low-loss power supply.Its built-in gain is 20, and by the collocation of pin1 and pin8 pin interdigit electric capacity, gain reaches as high as 200.LM386 can use battery for supply power supply, and input voltage range can, by 4V ~ 12V, only consume 4mA electric current, and distortion be low during attonity.User learning single-chip microcomputer player principle can be met.

As shown in Figure 8, be Liquid Crystal Module 2 circuit theory diagrams.This device can carry out the study of 1602 character liquid crystal and 12864 dot matrix type liquid crystal, and device extracts the control end of liquid crystal and data terminal, as long as just can be controlled with single-chip microcomputer by patch cord.

More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technician in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.

Claims

1. a portable single-chip experimental development device, it is characterized in that: the Liquid Crystal Module (2) comprising single-chip minimum system (1) and be electrically connected with single-chip minimum system (1), DC power supplier (3), 1302 clocks and 24C02 memory module (4), USB download module (5), serial communication and ISP download online module (6), numeral method module (7), ATMEGA8 minimum system (8), 4*4 Keysheet module (9), 386 low-frequency power amplifier modules (10) and 18B20 temperature test and infrared module (11).

2. a kind of portable single-chip experimental development device as claimed in claim 1, is characterized in that: described Liquid Crystal Module (2) is 128*64 and 1602 Liquid Crystal Modules.

3. a kind of portable single-chip experimental development device as claimed in claim 1, is characterized in that: described numeral method module (7) is 6 dynamic charactron display modules.

4. a kind of portable single-chip experimental development device as claimed in claim 1, is characterized in that: described single-chip minimum system (1) adopts AT89S52 single-chip microcomputer to be main control chip.

5. a kind of portable single-chip experimental development device as claimed in claim 1, is characterized in that: described USB download module (5) adopts ATMEGA8 as main control chip.