本文介紹一種采用智能數(shù)字溫度傳感器DS18B20進(jìn)行溫度采集，并通過(guò)單片機(jī)與PC機(jī)完成數(shù)據(jù)處理的系統(tǒng)。 硬件電路由四部分組成：溫度數(shù)據(jù)采集部分，即時(shí)溫度顯示驅(qū)動(dòng)部分，溫度數(shù)據(jù)存儲(chǔ)部分和上位PC機(jī)數(shù)據(jù)處理部分。整個(gè)硬件設(shè)計(jì)原理圖如圖1所示。
標(biāo)簽： 單片機(jī) 溫度采集 記錄系統(tǒng)
上傳時(shí)間： 2013-10-28
上傳用戶：wettetw
在測(cè)控領(lǐng)域中，經(jīng)常遇到監(jiān)測(cè)對(duì)象輸出信號(hào)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(hào)采集系統(tǒng)的實(shí)現(xiàn)方法，利用具有A/D轉(zhuǎn)換功能的單片機(jī)STC25A60S2和具有精確放大功能的易用放大器AD620實(shí)現(xiàn)了最小系統(tǒng)，并論述了系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)，詳細(xì)介紹了采集小信號(hào)的過(guò)程，并給出了實(shí)際應(yīng)用的例子，以及小信號(hào)采集在相關(guān)領(lǐng)域的應(yīng)用。
上傳時(shí)間： 2014-01-03
上傳用戶：xuanjie
于FPGA和面陣CCD攝像頭的動(dòng)態(tài)光譜數(shù)據(jù)采集與預(yù)處理
上傳時(shí)間： 2013-10-16
上傳用戶：dongqiangqiang
本文是基于C8051F單片機(jī)的便攜式農(nóng)田基礎(chǔ)信息采集系統(tǒng)的設(shè)計(jì)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(dòng)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(jiǎn)單、安裝方便、模塊化和可擴(kuò)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(jìn)行使用。
標(biāo)簽： C8051F 單片機(jī) 便攜式 采集終端
上傳時(shí)間： 2013-11-09
上傳用戶：huyanju
基于單片機(jī)的多路數(shù)據(jù)采集系統(tǒng)
標(biāo)簽： 單片機(jī) 多路數(shù)據(jù)采集 系統(tǒng)設(shè)計(jì) 畢業(yè)論文
上傳時(shí)間： 2014-12-26
上傳用戶：龍飛艇
PC與單片機(jī)數(shù)據(jù)采集系統(tǒng)的USB通訊設(shè)計(jì)論文
標(biāo)簽： USB 單片機(jī) 數(shù)據(jù)采集系統(tǒng) 通訊設(shè)計(jì)
上傳時(shí)間： 2013-10-30
上傳用戶：hanli8870
便攜式信號(hào)采集在機(jī)器健康診斷系統(tǒng)中有較高的應(yīng)用價(jià)值。機(jī)器健康診斷的信號(hào)特點(diǎn)是包括低頻信號(hào)。本文研究是為了實(shí)現(xiàn)簡(jiǎn)易而且低成本的低頻便攜式信號(hào)采集。以Microchip公司單片機(jī)PIC18F1320為核心設(shè)計(jì)信號(hào)采集電路，實(shí)現(xiàn)了信號(hào)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(guò)有線通信，信號(hào)數(shù)據(jù)由串行口通過(guò)MAX232芯片輸送到微型計(jì)算機(jī)接收和保存，最后繪制出信號(hào)波形。 微型計(jì)算機(jī)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(hào)，證明該方案符合設(shè)計(jì)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(shí)間： 2013-11-19
上傳用戶：moerwang
為提高溫度測(cè)量效率，降低系統(tǒng)的成本，擴(kuò)展傳輸距離，設(shè)計(jì)出一種新型溫度采集系統(tǒng)。單片機(jī)通過(guò)控制具有單總線方式的溫度傳感器DS18B20實(shí)現(xiàn)對(duì)溫度的測(cè)量，同時(shí)單片機(jī)通過(guò)控制具有單總線方式300～450MHz頻率范圍內(nèi)的MAX7044與MAX7033無(wú)線發(fā)射與接收芯片實(shí)現(xiàn)溫度數(shù)據(jù)的無(wú)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(wú)線傳輸方式實(shí)現(xiàn)遠(yuǎn)距離通信，易于系統(tǒng)的集成與擴(kuò)展。實(shí)驗(yàn)結(jié)果表明，該系統(tǒng)結(jié)構(gòu)簡(jiǎn)單、方便移植，能夠同時(shí)實(shí)現(xiàn)多達(dá)上百點(diǎn)溫度的測(cè)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(wú)線溫度 采集 系統(tǒng)設(shè)計(jì)
上傳時(shí)間： 2013-10-29
上傳用戶：515414293
介紹一種基于C8051單片機(jī)的動(dòng)態(tài)心電監(jiān)護(hù)系統(tǒng)。該系統(tǒng)由兩部分組成：以C8051F320單片機(jī)為核心的數(shù)據(jù)采集裝置和以PC機(jī)為平臺(tái)的分析處理系統(tǒng)。硬件電路功耗低，由單片機(jī)自帶的USB接口將數(shù)據(jù)傳送給PC機(jī)。軟件平臺(tái)采用LabVIEW可視化虛擬儀器系統(tǒng)開(kāi)發(fā)平臺(tái)，將傳統(tǒng)儀器的功能模塊集成到計(jì)算機(jī)中，用戶可通過(guò)修改虛擬儀器的程序改變其功能。采用USB接口實(shí)時(shí)傳輸心電數(shù)據(jù)，并將數(shù)據(jù)采集模塊設(shè)計(jì)為計(jì)算機(jī)外設(shè)，使該系統(tǒng)高速快捷、小巧便攜。 Abstract: In this design，a low-cost ECG electrocardiogram monitoring system is introduced，which consists of two parts:data acquisition device based on C8051F320and PC terminal as the analysis and processing system.The system is low-power consumption，the data is transmitted to the PC terminal by USB interface of the C8051F320.By using the visible virtual instrument system developing platform LabVIEW，the traditional instruments function modules are integrated into the computer，so the user can modify virtual instrument software to change its function to meet their needs.Using USB in-terface to realize real-time ECG data transmission，in addition，ECG data acquisition module is designed as the computer peripheral，which makes the syetem high-speed and portable.
標(biāo)簽： C8051F320 心電監(jiān)護(hù) 系統(tǒng)設(shè)計(jì)
上傳時(shí)間： 2013-11-13
上傳用戶：zhangzhenyu
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(xì)說(shuō)明8254定時(shí)計(jì)數(shù)器及8259中斷控制器的結(jié)構(gòu)特點(diǎn)、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(diǎn)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(wèn)題及程序測(cè)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(shí)間： 2013-11-14
上傳用戶：qq527891923
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