CN207352841U - A kind of singlechip experimental facility for communication experiment - Google Patents

Abstract

The utility model discloses a kind of singlechip experimental facility for communication experiment；Belong to experimental provision technical field；Technical points include babinet and the mainboard being located in babinet, the mainboard is equipped with singlechip chip, and the wire communication module being connected with singlechip chip, wireless communication module, input/output module, jtag interface, I/O mouthful expansion interface, clock circuit, reset circuit and power module are additionally provided with mainboard；The wire communication module includes UART serial communication circuits, and the UART serial communication circuits and power module are connected with USB interface；The wire communication module further includes ethernet module, CAN transceiver and digital hygro sensor；The utility model aims to provide a kind of easy to use, singlechip experimental facility for communication experiment for working well；For carrying out communication experiment.

Description

A kind of singlechip experimental facility for communication experiment

Technical field

A kind of singlechip experimental facility is the utility model is related to, more specifically, more particularly to one kind is used for communication experiment Singlechip experimental facility.

Background technology

The all many colleges and universities' electronic information-majors of microcontroller, Principle of Communication, mobile communication, technology of Internet of things are normally opened to be set Course, laboratory apparatus are the essential equipment of practical teaching.In the market is existing to be substantially experimental box or experimental bench, usually There are the problems such as expensive, volume is larger, and hardware circuit data not enough discloses, it is unfavorable for the comprehensive learned lesson knowledge of student.

Such as：Principle of Communication, the experimental box of mobile communication often lay particular emphasis on principle in terms of verification, be unfavorable for doing secondary open Hair；Internet of Things experimental box then lays particular emphasis on sensing detection, short-distance wireless communication, and often most asks function large and complete, is unfavorable for pushing away Extensively；Autgmentability is inadequate, is unfavorable for user and does expansion experiment；Single chip computer experiment boxboard/case has very much, with 51 microcontrollers and AVR single chip is in the majority, and STM32 microcontrollers also have, but lay particular emphasis on the communication technology application singlechip experimental board/case currently without； Even if there is the singlechip experimental board of the design communication technology, also simply simple certain communication technology, not comprehensive enough.

In addition, because experimental box or experimental bench cost be high, volume is big, it is typically only capable to be stored in laboratory, and laboratory Equipment can not possibly be opened to student at any time, therefore be unfavorable for student and tested at any time using experimental facilities.

Utility model content

The purpose of this utility model is that in view of the above shortcomings of the prior art, there is provided one kind is easy to use, works well The singlechip experimental facility for communication experiment.

What the technical solution of the utility model was realized in：A kind of singlechip experimental facility for communication experiment, bag Babinet and the mainboard being located in babinet are included, the mainboard is equipped with singlechip chip, is additionally provided with mainboard and monolithic movement The wire communication module of piece connection, wireless communication module, input/output module, jtag interface, I/O mouthfuls of expansion interfaces, clock electricity Road, reset circuit and power module；The wire communication module includes UART serial communication circuits, the UART serial communications electricity Road and power module are connected with USB interface；The wire communication module further includes ethernet module, CAN transceiver and numeral Temperature Humidity Sensor.

In a kind of above-mentioned singlechip experimental facility for communication experiment, the wireless communication module includes RFID moulds Block, WiFi module, bluetooth module, infrared receiving terminal, nRF24L01 short-range wireless communication modules and GPRS+GPS modules.

In a kind of above-mentioned singlechip experimental facility for communication experiment, the UART serial communication circuits are mainly CH340G chips, CH340G chips are connected with USB interface, singlechip chip respectively, and USB interface is connected with outer computer, institute State UART serial communication circuits and further include the indicator light being connected with CH340G chips.

In a kind of above-mentioned singlechip experimental facility for communication experiment, have if the babinet inner bottom surface is circumferentially distributed Dry connecting pole, is equipped with mainboard and corresponds the mounting hole coordinated with connecting pole.

In a kind of above-mentioned singlechip experimental facility for communication experiment, in cabinet wall circumferentially arranged with mounting ring； Wherein one end is equipped with some connection rings to the mainboard along its length, and the other end is equipped with some connection hook portions；Close to connection ring one The mounting ring of side is equipped with corresponds the fixation hook portion coordinated with connection ring；Close to the mounting ring upper surface of connection hook portion side Equipped with mounting groove, it is equipped with mounting groove and corresponds the fixed agraffe coordinated with being connected hook portion.

In a kind of above-mentioned singlechip experimental facility for communication experiment, it is additionally provided with mainboard and connects with singlechip chip The analog-to-digital conversion output circuit and digital-to-analogue conversion input circuit connect.

In a kind of above-mentioned singlechip experimental facility for communication experiment, the input/output module includes IPS liquid crystal Touch-screen, LED running lamps, Independent keys keyboard and buzzer；Fixed seat is equipped with the mainboard of singlechip chip periphery, it is described IPS liquid crystal touch screens are arranged in the fixed seat on the upside of singlechip chip.

The utility model with the above structure, has the following advantages：

First, for learning a variety of wire communications, wireless communication technique and communication coding and decoding technology

Wire communication module includes ethernet module, CAN transceiver, UART serial communication circuits and digital temperature and humidity sensing Device etc., wireless communication module include short-distance wireless communication technology：Bluetooth module, Wi-Fi module, infrared receiving terminal, RFID moulds Block and nRF24L01 short-range wireless communication modules etc., long range wireless communication technology：GPRS+GPS modules etc..Communicate coding and decoding Technology includes message sink coding and source decoding, i.e. analog-to-digital conversion output circuit and digital-to-analogue conversion input circuit.By by wired, nothing Line communication technology and communication coding and decoding technology combine, and the utility model is carried out full-featured communication experiment, conveniently make User carries out expansion experiment.

2nd, for learning microcontroller

The singlechip chip of the utility model, can work as microcontroller and use, complete single chip computer experiment；Can also be by uC/OS- III operating systems, uCLinux, eCos, FreeRTOS and djyOS (Dujiang weir operating system) migrate to wherein, complete embedded System experimentation.

3rd, autgmentability is strong

The utility model draws part I/O mouthfuls of extension, and after each module removes, its interface can also be otherwise utilized.Make Interface after user need to only be removed other equipment with the I/O mouth expansion interfaces on mainboard or each module with Du Pont's line is connected, Other equipment can be controlled with singlechip chip, complete the experimental project of extension.

4th, it is widely used

The utility model can use in the experimental teaching and Course Exercise of the courses such as microcontroller, communication technology application, Available for scientific and technical innovation, the training of student's competitive scholastic exercise etc. outside graduation project, students in class.

5th, it is easy to use

The utility model is coordinated by connecting pole and mounting hole, convenient that mainboard is positioned, then by connecting hook portion, connecting Connect ring, fixed hook portion, fixed agraffe and coordinate and mainboard is fixed on babinet, it is simple in structure, easy to operate.

Brief description of the drawings

The utility model is described in further detail for embodiment in below in conjunction with the accompanying drawings, but does not form to this reality With new any restrictions.

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is the attachment structure schematic diagram of the utility model.

In figure：Babinet 1, connecting pole 1a, mounting ring 1b, fixed hook portion 1c, fixed agraffe 1d, fixed seat 1e, mainboard 2, peace Fill hole 2a, connection ring 2b, connection hook portion 2c, singlechip chip 3, wire communication module 4, UART serial communication circuits 4a, ether Net module 4b, CAN transceiver 4c, digital hygro sensor 4d, wireless communication module 5, RFID module 5a, WiFi module 5b, Bluetooth module 5c, infrared receiving terminal 5d, nRF24L01 short-range wireless communication module 5e, GPRS+GPS module 5f, input and output Module 6, IPS liquid crystal touch screen 6a, LED running lamps 6b, Independent keys keyboard 6c, buzzer 6d, analog-to-digital conversion output circuit 7, Digital-to-analogue conversion input circuit 8.

Embodiment

Refering to shown in Fig. 1 and Fig. 2, a kind of singlechip experimental facility for communication experiment of the utility model, including case Body 1 and the mainboard 2 being located in babinet 1,1 inner bottom surface of babinet is circumferentially distributed some connecting pole 1a, is set on mainboard 2 Have and correspond the mounting hole 2a coordinated with connecting pole 1a.Annular mounting post is formed on connecting pole 1a, installation column diameter is less than The internal diameter of mounting hole 2a, using this structure, facilitates mainboard 2 to be positioned on babinet 1.1 inner wall of babinet circumferentially arranged with Mounting ring 1b；Wherein one end is equipped with some connection ring 2b to the mainboard 2 along its length, and the other end is equipped with some connection hook portions 2c；Mounting ring 1b close to connection ring 2b sides is equipped with corresponds the fixation hook portion 1c coordinated with connection ring 2b；Close to even The mounting ring 1b upper surfaces for connecing hook portion 2c sides are equipped with mounting groove, are equipped with mounting groove and coordinate with being connected hook portion 2c and corresponding Fixed agraffe 1d.Using this structure, coordinated by connection ring 2b, connection hook portion 2c, fixed hook portion 1c and fixed agraffe 1d Mainboard 2 is secured firmly on babinet 1, it is easy for installation, quick.

The mainboard 2 is equipped with singlechip chip 3, and in the present embodiment, singlechip chip 3 preferably uses STM32F103ZET6 chips.Wire communication module 4, the radio communication mold being connected with singlechip chip 3 are additionally provided with mainboard 2 Block 5, input/output module 6, jtag interface, I/O mouthfuls of expansion interfaces, clock circuit, reset circuit and power module.Monolithic movement Piece 3 is connected by wire jumper with other modules.

Wherein, jtag interface is used for computer terminal connection JLink emulators/downloader, using the interface of 20 pins, uses JTAG mode downloads firmware or debugging routine to singlechip chip.I/O mouthfuls of expansion interfaces by the SPI2 mouths of singlechip chip, USART4 mouthfuls, PG13~9, PB8~5 and+5V ,+3V, GND are drawn.When testing, Du Pont's line and external equipment can be used, is passed through Singlechip chip controls peripheral hardware, way of extensive experimentation project.The power module is connected with USB interface, power module core devices For AMS1117-3.3, AMS1117-3.3 is a positive low dropout voltage regulator, and 1.2V, fixed output are reduced in 1A current downs Voltage is 3.3V, has 1% precision ,+5V the DC power supplies that can send USB interface change into+3.3V direct current outputs, to monolithic Each chip, function module provide power supply on movement piece and experimental plate.

The wire communication module 4 connects including UART serial communication circuits 4a, the UART serial communication circuits 4a and USB Mouth connection；The UART serial communication circuits 4a is mainly CH340G chips, CH340G chips respectively with USB interface, microcontroller Chip 3 connects, and USB interface is connected with outer computer, and the UART serial communication circuits 4a is further included to be connected with CH340G chips The indicator light connect.USB interface connects outer computer USB port, system offer+5V operating voltages, while by CH340G chips, Usb bus is changed into TTL UART universal serial bus, singlechip chip is serially led to outer computer by USART1 mouthfuls Letter.Core devices CH340G is the switching chip of a usb bus, realizes that USB turns serial ports, USB turns that IrDA is infrared or USB turns The functions such as printing port.Under serial mode, CH340G provides common MODEM contact signals, for being extended for outer computer Asynchronous serial port, or common serial equipment is directly upgraded to usb bus.

Meanwhile the wire communication module 4 further includes ethernet module 4b, CAN transceiver 4c and digital temperature and humidity sensing Device 4d.Ethernet module 4b core devices are W5500 ethernet modules, and W5500 is that the high-performance Ethernet that WIZnet is released connects One of mouth chip series, are internally integrated devices at full hardware ICP/IP protocol stack+MAC+PHY.Devices at full hardware agreement stack technology is patrolled using hardware Volume gate circuit realizes complicated ICP/IP protocol cluster, and it is notable excellent that its application has that simple and quick, reliability is high, security is good etc. Gesture；It is internally integrated MAC and PHY techniques so that the hardware design of microcontroller access network based on ethernet scheme is more simple and direct and efficient.

Its core devices of CAN (Controller Area Network, i.e. controller local area network) transceiver 4c are TJA1042, TJA1042 are a high-speed CAN transceivers, are the interfaces between CAN controller and physical bus, are controlled for CAN Device offer is differential to send and receive function.The transceiver aims at the high-speed CAN application design of automobile industry, and transmission rate is up to 1Mbit/s.PA11, PA12 pin connection CAN transceiver TJA1042 of singlechip chip, CAN transceiver interface connect another reality Test the interface or other CAN bus equipment of plate, you can complete CAN bus communication experiment.

Digital hygro sensor core devices are the humicap numeral humiture modules A M2302 of Ao Song companies production, It is a humiture compound sensor containing oneself calibration digital signal output.The digital module acquisition technique of its application specific and Temperature and humidity sensing technology, has high reliability and remarkable long-time stability.The PC12 pins connection number of singlechip chip Word Temperature Humidity Sensor AM2302, can complete monobus (1-Wire) communication experiment, the humiture of measurement experiment plate surrounding environment.

Preferably, the wireless communication module 5 includes RFID module 5a, WiFi module 5b, bluetooth module 5c, infrared receiver Head 5d, nRF24L01 short-range wireless communication module 5e and GPRS+GPS module 5f.

RFID module core devices are RC522, and RFID module built-in application is high in 13.56MHz contactless communications to be collected It is a low-voltage that the read-write card chip RC522 of Cheng Du is NXP companies to be released for " three tables " application, low cost, small Contactless read-write card chip, for intelligence instrument and portable handheld device.Singlechip chip by communicating with RFID module, Complete short-haul connections experiment.

Wi-Fi module core devices are ESP8266, its built-in core device is the ESP8266EX of Le Xin companies, it is responsible for nothing It when line network connection undertakes the task of Wi-Fi adapters, can be added in any design based on microcontroller, connect It is simple and practicable, SPI/SDIO interfaces or I need only be passed through²C/UART mouthfuls.Singlechip chip passes through USART2 mouthfuls of connection Wi-Fi Module ESP8266, can be surfed the Internet by the module, or connection smart mobile phone.

Bluetooth module interface kernel device is HC-05 bluetooth modules, and HC-05 modules are that Guang Zhouhui holds the limited public affairs of Information technology A high-performance principal and subordinate one bluetooth serial ports module of department's design, compatible SCM system, baud rate scope 4800~ 1382400bps.Singlechip chip can connect other bluetooths by USART3 mouthfuls of connection serial ports bluetooth modules by the module The intelligent terminal such as module, smart mobile phone, the computer with Bluetooth function, bluetooth host, PDA, PSP.

Infrared receiving terminal is made of integrated infrared receiving terminal 1838T, and 1838T includes high speed high sensitivity PIN photoelectricity two Pole pipe and low-power consumption, the preposition amplification IC of high-gain, using the additional external shield of epoxy encapsulation resist it is dry scratch design, in infrared remote control Used in system as receiver.Singlechip chip receives the I/O pins of head by PG9 connections 1818T, you can is completed with software Infrared receiver, decoding experiment.

NRF24L01 short-range wireless communication module core devices are the new single chip RF transceivers of Nordic companies NRF24L01, works in the ISM band that 2.4G~2.5GHz exempts from licensing.NRF24L01 is low in energy consumption, in the power hair with -6dBm When penetrating, operating current only has 9mA；During reception, operating current only has 12.3mA.It has a variety of low-power working modes, is operated in Electric current is 160mA during 100mW, realizes opposite WiFi apart from farther in data transmission.Microcontroller should by SPI1 mouthfuls of connections Wireless module, you can control nRF24L01 wireless modules and the nRF24L01 wireless modules of other experimental plates to lead to by spi bus Letter.

GPRS+GPS modules can the scientific and technological GPRS+GPS A7 modules released for installation peace letter.The module supports GSM/GPRS Four frequency ranges (including 850MHz, 900MHz, 1800MHz and 1900MHz), support GPRS Class 10, support voice communication, SMS messaging, GPRS data business, standard GSM AT orders, TCP/IP orders, support GPS+AGPS.Singlechip chip passes through Two serial ports of USART4 and USART5 are connected with the module, you can are carried out mobile phone short message transmitting-receiving, GPRS online and GPS positioning and led Boat experiment.

Meanwhile the analog-to-digital conversion output circuit 7 being connected with singlechip chip 3 is additionally provided with mainboard 2 and digital-to-analogue conversion is defeated Enter circuit 8.Modulus and D/A converting circuit, using the modulus and digital analog converter built in singlechip chip, realize message sink coding (analog signal digital) and source decoding (digital signal is simulated).

The input/output module 6 includes IPS liquid crystal touch screen 6a, LED running lamps 6b, Independent keys keyboard 6c and buzzing Device 6d；On the mainboard 2 of the periphery of singlechip chip 3 monolithic movement is arranged on equipped with fixed seat 1e, the IPS liquid crystal touch screens 6a On the fixed seat 1e of the upside of piece 3.

IPS liquid crystal touch screens are the full viewing angle liquid crystal screens of 3.5 cun of IPS；It can add resistive touch, a variety of choosings of human-computer interaction Select；Support abundant interface, 8/9/16/18/RGB/SPI serial ports；Resolution ratio is 480 × 320.

LED flowing water circuit for lamp, 4 LED light use common anode connection, and singlechip chip passes through PG5~PG7 and PB5 pin controls Them are made, is shown available for output.

Independent keys keyboard circuit, 4 touch-switch have one end ground connection, and singlechip chip is drawn by PC7~PC9 and PB8 Foot connects touch-switch, and whether key range is pressed.

Buzzer can be used for playing music, singlechip chip by PE0 pins control the break-make of S9012 triodes Q1 so as to Whether controlling buzzer work, triode electrification stream amplification.

In use, powering on, the required module tested is connected by wire jumper with singlechip chip, passes through USB Interface, which makes outer computer be downloaded debugging to singlechip chip, can complete various communication experiments, and the utility model includes Line communication module and wireless communication module, can carry out comprehensive communication technology experiment, easy to use, and autgmentability is high.

Embodiment provided above is the better embodiment of the utility model, is only used for convenient explanation the utility model, and The non-limitation made to the utility model in any form, any those of ordinary skill in the art, if not departing from In the range of the utility model carries technical characteristic, locally change or repair using made by the utility model disclosed technology content The equivalent embodiment of decorations, and without departing from the technical characteristics of the utility model content, still fall within the utility model technical characteristic In the range of.

Claims (7)

1. a kind of singlechip experimental facility for communication experiment, including babinet (1) and the mainboard (2) that is located in babinet (1), It is characterized in that, the mainboard (2) is equipped with singlechip chip (3), it is additionally provided with mainboard (2) with singlechip chip (3) even The wire communication module (4) that connects, wireless communication module (5), input/output module (6), jtag interface, I/O mouthfuls of expansion interfaces, when Clock circuit, reset circuit and power module；The wire communication module (4) includes UART serial communication circuits (4a), described UART serial communication circuits (4a) and power module are connected with USB interface；The wire communication module (4) further includes Ethernet Module (4b), CAN transceiver (4c) and digital hygro sensor (4d).

2. a kind of singlechip experimental facility for communication experiment according to claim 1, it is characterised in that described wireless Communication module (5) include RFID module (5a), Wi-Fi module (5b), bluetooth module (5c), infrared receiving terminal (5d), NRF24L01 short-range wireless communication modules (5e) and GPRS+GPS modules (5f).

A kind of 3. singlechip experimental facility for communication experiment according to claim 1, it is characterised in that the UART Serial communication circuit (4a) is mainly CH340G chips, and CH340G chips are connected with USB interface, singlechip chip (3) respectively, USB interface is connected with outer computer, and the UART serial communication circuits (4a) further include the instruction being connected with CH340G chips Lamp.

A kind of 4. singlechip experimental facility for communication experiment according to claim 1, it is characterised in that the babinet (1) inner bottom surface is circumferentially distributed some connecting poles (1a), is equipped with mainboard (2) and corresponds what is coordinated with connecting pole (1a) Mounting hole (2a).

5. a kind of singlechip experimental facility for communication experiment according to claim 1 or 4, it is characterised in that in case Body (1) inner wall is circumferentially arranged with mounting ring (1b)；Wherein one end is equipped with some connection rings to the mainboard (2) along its length (2b), the other end are equipped with some connection hook portions (2c)；Mounting ring (1b) close to connection ring (2b) side is equipped with and connection ring (2b) corresponds the fixation hook portion (1c) coordinated；Installation is equipped with close to mounting ring (1b) upper surface of connection hook portion (2c) side Groove, is equipped with mounting groove and corresponds the fixed agraffe (1d) coordinated with being connected hook portion (2c).

6. a kind of singlechip experimental facility for communication experiment according to claim 1, it is characterised in that in mainboard (2) the analog-to-digital conversion output circuit (7) and digital-to-analogue conversion input circuit (8) being connected with singlechip chip (3) are additionally provided with.

A kind of 7. singlechip experimental facility for communication experiment according to claim 1, it is characterised in that the input Output module (6) includes IPS liquid crystal touch screens (6a), LED running lamps (6b), Independent keys keyboard (6c) and buzzer (6d)； Fixed seat (1e) is equipped with the mainboard (2) of singlechip chip (3) periphery, the IPS liquid crystal touch screens (6a) are arranged on monolithic In fixed seat (1e) on the upside of movement piece (3).