在測控領(lǐng)域中，經(jīng)常遇到監(jiān)測對象輸出信號較小，難以直接采集，一般都需要將其放大后再做處理。介紹了一種小信號采集系統(tǒng)的實現(xiàn)方法，利用具有A/D轉(zhuǎn)換功能的單片機STC25A60S2和具有精確放大功能的易用放大器AD620實現(xiàn)了最小系統(tǒng)，并論述了系統(tǒng)設(shè)計與實現(xiàn)，詳細介紹了采集小信號的過程，并給出了實際應(yīng)用的例子，以及小信號采集在相關(guān)領(lǐng)域的應(yīng)用。
上傳時間： 2014-01-03
上傳用戶：xuanjie
基于FPGA的高速圖像數(shù)據(jù)采集系統(tǒng)設(shè)計
標(biāo)簽： FPGA 圖像數(shù)據(jù)采集 系統(tǒng)設(shè)計
上傳時間： 2014-12-26
上傳用戶：devin_zhong
于FPGA和面陣CCD攝像頭的動態(tài)光譜數(shù)據(jù)采集與預(yù)處理
上傳時間： 2013-10-16
上傳用戶：dongqiangqiang
本文是基于C8051F單片機的便攜式農(nóng)田基礎(chǔ)信息采集系統(tǒng)的設(shè)計方案，為了克服現(xiàn)有農(nóng)田綜合數(shù)據(jù)采集設(shè)備的移動性差，高成本，使用復(fù)雜的不足，本文提供一種便攜嵌入式農(nóng)田基礎(chǔ)數(shù)據(jù)采集終端，該終端具有體積小、功耗低、攜帶性好、操作簡單、安裝方便、模塊化和可擴張性及網(wǎng)絡(luò)化功能，農(nóng)業(yè)生產(chǎn)管理人員可以隨意攜帶到田間地頭進行使用。
上傳時間： 2013-11-09
上傳用戶：huyanju
基于單片機的多路數(shù)據(jù)采集系統(tǒng)
標(biāo)簽： 單片機 多路數(shù)據(jù)采集 系統(tǒng)設(shè)計 畢業(yè)論文
上傳時間： 2014-12-26
上傳用戶：龍飛艇
PC與單片機數(shù)據(jù)采集系統(tǒng)的USB通訊設(shè)計論文
標(biāo)簽： USB 單片機 數(shù)據(jù)采集系統(tǒng) 通訊設(shè)計
上傳時間： 2013-10-30
上傳用戶：hanli8870
便攜式信號采集在機器健康診斷系統(tǒng)中有較高的應(yīng)用價值。機器健康診斷的信號特點是包括低頻信號。本文研究是為了實現(xiàn)簡易而且低成本的低頻便攜式信號采集。以Microchip公司單片機PIC18F1320為核心設(shè)計信號采集電路，實現(xiàn)了信號的采集和保存。系統(tǒng)采用串行電可擦除芯片24LC32A保存數(shù)據(jù)，經(jīng)過有線通信，信號數(shù)據(jù)由串行口通過MAX232芯片輸送到微型計算機接收和保存，最后繪制出信號波形。 微型計算機程序采用Visual Basic編程。研究成功采樣頻率為3 kHz的復(fù)雜信號，證明該方案符合設(shè)計要求。 Abstract: Portable signal acquisition is useful in machine health monitoring systems. The signal characteristics of machine health monitoring includes low frequency signals. The goal of this study is to realize simple, inexpensive and portable low frequency signal sampling. This paper provides the project of signal acquisition system design based on PIC18F1320 microcontroller manufactured by the Microchip Technology Incorporation to achieve signal sampling and storage. The system adopted EEPROM 24LC32A to store the signal data. The microcomputer received data via wired link with the MAX232 IC through the serial port. The microcomputer program, programmed in Visual Basic, received the data, stored it and plotted the signal. The study successfully samples 3kHz complicated signals and thus meets the design requirement.
上傳時間： 2013-11-19
上傳用戶：moerwang
為提高溫度測量效率，降低系統(tǒng)的成本，擴展傳輸距離，設(shè)計出一種新型溫度采集系統(tǒng)。單片機通過控制具有單總線方式的溫度傳感器DS18B20實現(xiàn)對溫度的測量，同時單片機通過控制具有單總線方式300～450MHz頻率范圍內(nèi)的MAX7044與MAX7033無線發(fā)射與接收芯片實現(xiàn)溫度數(shù)據(jù)的無線傳輸。與傳統(tǒng)溫度采集系統(tǒng)相比，該系統(tǒng)利用單總線方式連接，采用無線傳輸方式實現(xiàn)遠距離通信，易于系統(tǒng)的集成與擴展。實驗結(jié)果表明，該系統(tǒng)結(jié)構(gòu)簡單、方便移植，能夠同時實現(xiàn)多達上百點溫度的測量與500m范圍的傳輸。 Abstract: To improve the temperature measurement efficiency and reduce system cost,expansion of transmission distance,a new type of temperature acquisition system is designed.Microcontroller controlled temperature sensor DS18B20which has a single-bus achieves temperature measurement,while microcontroller by controlled the MAX7044and MAX7033chip with a single-bus and having300~450MHz radiofrequency to achieve the wireless transmission of temperature data.Compared with conventional temperature acquisition system,the system uses single-bus connected,and uses wireless transmission means to achieve long-distance communications,easy-to-system integration and expansion.The experimental results show that the system is simple,convenient transplantation,and can be implemented in as many as a hundred-point temperature measure-ment and the transmission range of500meters.
標(biāo)簽： 單總線 無線溫度 采集 系統(tǒng)設(shè)計
上傳時間： 2013-10-29
上傳用戶：515414293
介紹基于ISA總線與KH-9300的數(shù)據(jù)采集板卡的設(shè)置，詳細說明8254定時計數(shù)器及8259中斷控制器的結(jié)構(gòu)特點、工作方式、控制字等，探討中斷類型、中斷處理程序、中斷矢量表及其填寫。重點講述使用TorboC編寫中斷服務(wù)程序的方法，應(yīng)注意的主要問題及程序測試的結(jié)果。 Abstract: The settings of KH-9300 data acquisition board based on the ISA bus is introduced,the structural characteristics,working methods,control characters of the timing counter 8254 and interruptioncontroller 8259 are explained in detail.The interruption type,interrupt handling programs,interruption vector table and its filling also are discussed.Further,great emphasis is put on the method of interrupt service program compiled by Torbo C,the main issues that should be noted,and the results of program testing.
上傳時間： 2013-11-14
上傳用戶：qq527891923
介紹一種基于C8051F060單片機和NAND Flash的數(shù)據(jù)采集存儲系統(tǒng)，該系統(tǒng)可實現(xiàn)3路信號采樣，每路采樣率為5KS/s,通過異步串行通信接口實現(xiàn)數(shù)據(jù)傳輸。并詳細說明系統(tǒng)的軟件設(shè)計。 Abstract: An acquisition and storage system based on C8051F060and NAND Flash is designed in this paper.The system is used to sample three-channel of signal,5KSPS each channel,and can upload data to test bench through UART（Universal Asynchronous Receiver/Transmitter）.The software design is discussed in detail.
標(biāo)簽： C8051F060 數(shù)據(jù)采集 存儲系統(tǒng)
上傳時間： 2013-10-12
上傳用戶：Jesse_嘉偉
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