為解決電致變色器件的顏色變化受外界環境顏色控制的問題，設計了一種基于單片機的便攜式顏色自適應識別電路。與傳統顏色識別電路相比較，該電路利用數字式的顏色傳感器來獲取外界環境顏色，產生的數字顏色信號易于單片機進行處理。在電路中，下位機部分主要負責獲取電致變色器件變色參數及控制電致變色器件的顏色變化;而上位機部分主要負責把下位機獲取的電致變色器件變色參數進行電壓到顏色的曲線擬合，并通過藍牙通信把擬合曲線參數傳遞給下位機。結果表明，該電路能自動根據環境顏色提供-4~4 V范圍步進為0.1 V的電壓來驅動電致變色器件的顏色顯示，與傳統的顏色識別電路設計相比，識別的精度和速度都得到了明顯改善。 Abstract: In this paper， a portable adaptive circuit for color identification(PACCI) based on MCU was designed. Compared to the traditional color identification circuit， the PACCI adopts digital sensor to detect the color data from external environment and further generate digital color data， which can be processed easily by MCU. In PACCI， the slave is mainly responsible for detecting the color parameters of the corresponding elcreochromic device and further driving it. For the master， which is mainly responsible for the color curve fitting based on the parameters of the electrochromic device， and transmits the fitting parameters to the slave through the bluetooth device. The results show that the PACCI can provide the basis voltage range from -4V to 4V automatically based on the colors of external environment with step as 0.1V to drive the corresponding electrochromic device. Compared to the traditional color recognition circuit， the recognition accuracy and speed of PACCI have been improved significantly.
上傳時間： 2013-11-09
上傳用戶：franktu
提出一種基于單片機AT89C51SND1C的MP3播放系統的設計方案。單片機集成了專用的解碼器，使用K9F1208閃存作為外存儲器，放音電路采用CS4330，存儲文件通過播放器上的USB接口設備從PC機上直接下載，液晶顯示采用LCD1602。方案設計簡單，性價比高，低功耗，易擴展。由于采用的是通用單片機實現的，可以很容易地移植到其他微控制器系統中，有很強的市場競爭能力和實用價值。 Abstract: A MP3 player design based on microchip AT89C51SND1C was presented, which used K9F1208 Flash chip as the memory circuit and used CS4330 as play chip. Storage files were download from PC through USB interfaces player on the device，and the LCD/602 was used as display screen. This system had characteristics of simple design,low power,easy expand，low cost and high recognition. Using of universual microchip make it easy to transplant to other microcontrol system，and have strong market competitiom and practical value.
上傳時間： 2014-12-27
上傳用戶：佳期如夢
This application note covers the design considerations of a system using the performance features of the LogiCORE™ IP Advanced eXtensible Interface (AXI) Interconnect core. The design focuses on high system throughput through the AXI Interconnect core with F MAX and area optimizations in certain portions of the design. The design uses five AXI video direct memory access (VDMA) engines to simultaneously move 10 streams (five transmit video streams and five receive video streams), each in 1920 x 1080p format, 60 Hz refresh rate, and up to 32 data bits per pixel. Each VDMA is driven from a video test pattern generator (TPG) with a video timing controller (VTC) block to set up the necessary video timing signals. Data read by each AXI VDMA is sent to a common on-screen display (OSD) core capable of multiplexing or overlaying multiple video streams to a single output video stream. The output of the OSD core drives the DVI video display interface on the board. Performance monitor blocks are added to capture performance data. All 10 video streams moved by the AXI VDMA blocks are buffered through a shared DDR3 SDRAM memory and are controlled by a MicroBlaze™ processor. The reference system is targeted for the Virtex-6 XC6VLX240TFF1156-1 FPGA on the Xilinx® ML605 Rev D evaluation board
上傳時間： 2013-11-14
上傳用戶：fdmpy
This application note covers the design considerations of a system using the performance features of the LogiCORE™ IP Advanced eXtensible Interface (AXI) Interconnect core. The design focuses on high system throughput through the AXI Interconnect core with F MAX and area optimizations in certain portions of the design. The design uses five AXI video direct memory access (VDMA) engines to simultaneously move 10 streams (five transmit video streams and five receive video streams), each in 1920 x 1080p format, 60 Hz refresh rate, and up to 32 data bits per pixel. Each VDMA is driven from a video test pattern generator (TPG) with a video timing controller (VTC) block to set up the necessary video timing signals. Data read by each AXI VDMA is sent to a common on-screen display (OSD) core capable of multiplexing or overlaying multiple video streams to a single output video stream. The output of the OSD core drives the DVI video display interface on the board. Performance monitor blocks are added to capture performance data. All 10 video streams moved by the AXI VDMA blocks are buffered through a shared DDR3 SDRAM memory and are controlled by a MicroBlaze™ processor. The reference system is targeted for the Virtex-6 XC6VLX240TFF1156-1 FPGA on the Xilinx® ML605 Rev D evaluation board
上傳時間： 2013-11-23
上傳用戶：shen_dafa
The data plane of the reference design consists of a configurable multi-channel XBERT modulethat generates and checks high-speed serial data transmitted and received by the MGTs. Eachchannel in the XBERT module consists of two MGTs (MGTA and MGTB), which physicallyoccupy one MGT tile in the Virtex-4 FPGA. Each MGT has its own pattern checker, but bothMGTs in a channel share the same pattern generator. Each channel can load a differentpattern. The MGT serial rate depends on the reference clock frequency and the internal PMAdivider settings. The reference design can be scaled anywhere from one channel (two MGTs)to twelve channels (twenty-four MGTs).
上傳時間： 2013-12-25
上傳用戶：jkhjkh1982
TCA2003是徠卡測量系統于1998年推出市場的世界上第一臺帶有目標自動照準功能(Automatic Target Recognition)的全自動全站儀，又被稱作“測量機器人”，其代表世界大地測量儀器領先水平的0.5"測角精度和1mm+1×10－6Dm測距精度使其成為世界各國高精度大地測量應用中的一款經典儀器。 從1999年進入中國市場開始，TCA2003先后在大型水電站和水利樞紐大壩監測、地鐵隧道和基坑、核電站和大型鍋爐等工業現場高精度測量及自動化監測項目中投入使用，并收到良好的工程應用效果，尤其是其對各種惡劣環境的抵御能力和測量性能穩定性，更是得到眾多用戶的贊許。記得從頭至尾負責廣州地鐵黃沙站自動化監測項目實施的廣州亞奧公司的張總曾如此激動的評價TCA2003的穩定性和耐用性，“我們在廣州地鐵黃沙站使用的6臺TCA2003使用4年多時間性能一直都很穩定，精度保證在指標中”。此后TCA2003在浦東磁懸浮、盧浦大橋、青藏鐵路、武廣高速鐵路、國家大劇院、“鳥巢”、廣州電視臺發射塔等一批國家重大工程和特殊建筑物建設項目的高精度工程測量都有所應用。目前已經形成在礦山監測、地質災害和工程搶險監測等新興自動化測量應用領域、原有各種高精度自動化測量和工程測量應用領域百花競放的態勢。 十年的市場檢驗，我們足以對一個測量儀器的品質和性能作出可靠的評價。出版此文集一方面是總結用戶的應用經驗，另一方面也希望能給徠卡TCA2003用戶提供參考借鑒。
上傳時間： 2013-11-03
上傳用戶：shizhanincc
SPLASH is a c++ class library that implements many of the Perl constructs and data types, including extensive regex regular expression pattern matching. For those not familiar with Perl, it is an excellent scripting language by Larry Wall and is available for most platforms. This Class library provides List, String, Regular Expression, and text manipulation handling capabilities based on those provided in Perl
標簽： implements constructs including library
上傳時間： 2013-12-07
上傳用戶：1583060504
ATmega8 taillight circuitAn assembly language program that generates 5 different static patterns with switching from pattern-to-pattern controlled by the depression of one push-button switch (S2).
標簽： taillight circuitAn generates different
上傳時間： 2014-01-12
上傳用戶：wanghui2438
This code is to estimate the parameter of model of Mixture Gauss which is popular model used in pattern classification . JAVA 寫的估計復合高斯模型中的參數
標簽： model parameter estimate Mixture
上傳時間： 2015-04-10
上傳用戶：kikye
this is a trade sale system realized by java. It can run some easy functions and has a good design pattern CVS. A good project to learn CVS.
標簽： functions realized design system
上傳時間： 2015-04-17
上傳用戶：sz_hjbf
