Realization of Serial Port Expansion Circuit

2012 ◽  
Vol 271-272 ◽  
pp. 1597-1601
Author(s):  
Xue Mei Zhao
Keyword(s):  
Circuit Theory ◽  
Industrial Applications ◽  
Application Software ◽  
Serial Port ◽  
Interface Chip ◽  
Hardware Circuit ◽  
Expansion Circuit ◽  
Port Expansion

This article describes the design of a interface chip with serial port expansion circuit of computer in industrial applications. It is used to connect with 422 and RS232 interfaces. Circuits involved several major chip such as the interface of 422 and RS232 and UART(Universal Asynchronous Receiver Transmitter)16C550 Inside the computer. Paper describes the composition of the hardware circuit, theory and implementation and initialization programming of URAT interface chip. We use interface chip with the FIFO to the circuit, It improves the efficiency of the application software, And it solves the problem of insufficient of computer serial port.

A Realization Method of Sound Gathering and Broadcasting System Based on TMS320VC5416DSP

2011 ◽  
Vol 71-78 ◽  
pp. 3110-3113
Author(s):  
Shi Sheng Jia ◽  
Mao Ying Zhou
Keyword(s):  
High Grade ◽  
Digital Audio ◽  
Serial Port ◽  
Audio Signals ◽  
Control Center ◽  
Control Interface ◽  
Chip Processing ◽  
Broadcasting System ◽  
Hardware Circuit ◽  
Code Standard

The sound gathering and broadcasting system in which the TMS320VC5416 is as the control center, the TLV320AIC23 as the codec and G.711 as coding standard is presented in this paper. The composition of the system, the design of the hardware circuit and the programming method of the software are proposed. The configuration mode of the Multichannel Buffered Serial Port (McBSP0 and McBSP1) of TMS320VC5416 and that of the control interface and the digital audio interface of the codec chip TLV320AIC23 are determined. The system realizes the storage and transmission of the digit audio signals well and obtains a high grade effect in time, with DSP chip processing the digit audio signals by means of the G.711 code standard.

Remote Data Acquisition System Based on Embedded RT-Thread

2012 ◽  
Vol 241-244 ◽  
pp. 2238-2241 ◽  
Author(s):  
Xue Fei Shi ◽  
Tao Feng ◽  
Xiao Ming Zhang
Keyword(s):  
Operating System ◽  
Data Acquisition ◽  
Integrated Network ◽  
Network Connection ◽  
Network Controller ◽  
Higher Power ◽  
Server Software ◽  
Interface Chip ◽  
Hardware Circuit ◽  
Remote Data

Currently integrated network controller could implement data transmission through Internet. But commonly they have higher power consumption, fewer channels which could not be changed and less TCP/IP connection. A remote data acquisition technology based on embedded real-time operating system RT-Thread is presented in this paper. Server and client were constructed respectively according to TCP/IP protocol stack provided by operating system itself. Hardware circuit was centered with large capacity enhanced MCU named STM32F103ZET6. Ethernet interface chip DM9000AEP and network connection HR911105A were applied in our system. Socket API interface functions provided by RT-Thread were utilized in client and server software programs. Experimental results show that this system needs less hardware sources to implement more TCP/IP connections during remote data acquisition process.

scholarly journals Design of Smart Card Chip Reader Based on STM32

2020 ◽  
Vol 2 (1) ◽  
pp. 7
Author(s):  
Zebin Tan ◽  
Yong Zuo ◽  
Hongwei Cao ◽  
Jiahao Huang
Keyword(s):  
Smart Card ◽  
Block Diagram ◽  
Data Communication ◽  
Host Computer ◽  
Flow Chart ◽  
Serial Port ◽  
Overall Design ◽  
Full Speed ◽  
Hardware Circuit

<p>This paper designs a smart card chip reader based on STM32, and gives a block diagram of the overall design of the system. It introduces the design of the peripheral hardware circuit of the main control chip STM32F103CBT6 and the RF processing chip THM3070, and the format of data communication between each part and flow chart. The communication between the host computer and the reader adopts the USB CCID protocol, which supports the USB full-speed communication rate of 12Mbps, improves the interrupt response, and overcomes the shortcomings of the traditional serial port-based readers with low communication speed and poor interrupt response. At the same time, it realizes data interaction with the PC/SC standard PC application and has better versatility</p>

USB Communication Interface Design Based on the PDIUSBD11

2012 ◽  
Vol 268-270 ◽  
pp. 1570-1573
Author(s):  
Ming Xin Tang ◽  
Jue Xiu Xu
Keyword(s):  
Interface Design ◽  
Design Method ◽  
Test Results ◽  
Communication Interface ◽  
Usb Interface ◽  
I2c Bus ◽  
Communication Function ◽  
Usb Communication ◽  
Interface Chip ◽  
Hardware Circuit

Based on the widely used USB communication technology, when the speed requirement is not too high using USB controller chip with I2C bus develops USB interface, you can reduce the use of pin microcontroller ATmega8, simplify connection circuit. This article describes the design method of a Philips company with I2C interface USB interface chip PDIUSBD11, as well as the peripheral hardware circuit connection and USB HID class program design method. The test results show that can reliably achieve communication function between USB and computer, and has good application value.

The Design of Embedded Multi-Channel Data Acquisition System

2012 ◽  
Vol 182-183 ◽  
pp. 660-664
Author(s):  
Yan Zhang Qiu ◽  
Liang Guo ◽  
Sheng Hui Liu
Keyword(s):  
Embedded System ◽  
Data Acquisition ◽  
Software Design ◽  
Flash Memory ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Serial Port ◽  
The Embedded System ◽  
Ethernet Interface ◽  
Expansion Circuit

This paper analyzes the Flash Memory interface, SDRAM interface, Ethernet interface and Serial-port expansion circuit. The Embedded Multi-channel Data Acquisition System is designed by MCF5272 microprocessor. The main control system of MCF5272 includes SDRAM, Flash and BDM interface and so on. At the software design, we main introduce the compile and develop of bootload and the compiler and debugging environment of μClinux build. On this base, the general methods and points of the embedded system hardware design were summarized.

The Design Proposal Aerospace Electronic Test Equipment Based on Multi-Interface Data Communication

2013 ◽  
Vol 336-338 ◽  
pp. 3-8
Author(s):  
Yan Jun Zhang ◽  
Wen Sheng Qiao ◽  
Jin Ling Wang
Keyword(s):  
Data Communication ◽  
Engineering Practice ◽  
Remote Measurement ◽  
High Data ◽  
The Core ◽  
Ethernet Controller ◽  
Interface Chip ◽  
Design Proposal ◽  
Hardware Circuit ◽  
Communication Equipment

In the background of requirement which apply in aerospace remote measurement electronic equipment, a new requirement for the universal degree to the remote measurement system is proposed. This paper design communicating solutions of the multi-interface device, hardware circuit,FPGA as the core logic controller, coordinating RS-422 interface chip, Ethernet controller W5300,USB-FIFO,FT245 interface chip and other functional modules. The communication equipment has a variety of interfaces; achieve the reliability of transmission of high data rate. This has been applied for engineering practice and improves the efficiency of the design of the remote measurement equipment and maintenance.

scholarly journals Multiprotocol Communication Interface PMSM Control on Account of Industrial Configuration Software

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Li-guo Zhang ◽  
Man-feng Dou
Keyword(s):  
High Performance ◽  
Industrial Applications ◽  
Configuration Software ◽  
Industrial Control ◽  
Communication Interface ◽  
Software Interface ◽  
Control Configuration ◽  
And Control ◽  
Hardware Circuit ◽  
Industrial Configuration Software

The purpose is to achieve drive controller of PMSM connect with industrial control configuration software seamless and to meet the industrial configuration software in the demand for motor to realize intelligent control. A software interface was designed and implemented about motor drive controller and the PC the industrial control configuration base on Modbus_RTU serial communication protocol of industrial control. One kind of design and implementation methods have been proposed in the communication interfaces for industrial applications scalable multiselectivity. Using the latest high-performance multiprotocol transceiver device pin programmable SP339 as the lower machine communications chip designed optional multi-interface hardware circuit with DSP TMS320F2812 as the processor. The interface program was studied with regard to C language software of lower machine and control configuration software of PC. Database creation, data acquisition, and animation links of PC configuration software are realized. Online debugging results meet the design requirements on account of PC control configuration software and the lower machine controller hardware and software.

The Application of Ultra-Thin Sectioning Techniques to Non-Biological Samples

1968 ◽  
Vol 26 ◽  
pp. 332-333
Author(s):  
C. F. Oster
Keyword(s):  
Biological Sciences ◽  
Epoxy Resin ◽  
Cross Sections ◽  
Biological Samples ◽  
Industrial Applications ◽  
Photographic Film ◽  
Silver Particles ◽  
Thin Sectioning ◽  
Embedding Medium

Although ultra-thin sectioning techniques are widely used in the biological sciences, their applications are somewhat less popular but very useful in industrial applications. This presentation will review several specific applications where ultra-thin sectioning techniques have proven invaluable.The preparation of samples for sectioning usually involves embedding in an epoxy resin. Araldite 6005 Resin and Hardener are mixed so that the hardness of the embedding medium matches that of the sample to reduce any distortion of the sample during the sectioning process. No dehydration series are needed to prepare our usual samples for embedding, but some types require hardening and staining steps. The embedded samples are sectioned with either a prototype of a Porter-Blum Microtome or an LKB Ultrotome III. Both instruments are equipped with diamond knives.In the study of photographic film, the distribution of the developed silver particles through the layer is important to the image tone and/or scattering power. Also, the morphology of the developed silver is an important factor, and cross sections will show this structure.

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