為提高溫度測量效率,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)通過控制具有單總線方式的溫度傳感器DS18B20實(shí)現(xiàn)對溫度的測量,同時單片機(jī)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(shí)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(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)簡單、方便移植,能夠同時實(shí)現(xiàn)多達(dá)上百點(diǎn)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(jì)
上傳時間: 2013-10-29
上傳用戶:515414293
首先研究CAN總線和SAE J1939協(xié)議,提出一種基于MC9S12HZ256微控制器的總線式汽車數(shù)字儀表解決方案。詳細(xì)介紹SAE J1939協(xié)議的報文幀格式及應(yīng)用層協(xié)議中發(fā)動機(jī)相關(guān)參數(shù)的定義,以及步進(jìn)電機(jī)及其驅(qū)動和車速信號的處理方法。該數(shù)字儀表系統(tǒng)硬件平臺由微處理器和信號采集和信息處理及顯示等模塊組成。軟件設(shè)計(jì)部分編程實(shí)現(xiàn)了對CAN總線和各傳感器數(shù)據(jù)的讀取、處理。該系統(tǒng)能夠?qū)崟r反映車輛工況。 Abstract: In this paper,CAN bus and SAE J1939protocol are researched,and a vehicle digital instrument solution based on MC9S12HZ256MCU is proposed.The message frame format and some engine-related parameters’definition in SAE J1939application layer protocol are introduced in detail.Stepper motor and its driver,the methods of speed signal process-ing are also introduced.The hardware platform of vehicle digital instrument is composed by MCU,signal acquisition mod-ule,and signal processing and displaying module.Data receiving and processing from CAN bus and sensors are accom-plished by programming,and vehicle condition can be reflected in real-time.
上傳時間: 2013-10-20
上傳用戶:huannan88
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)說明8254定時計(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(jī)和NAND Flash的數(shù)據(jù)采集存儲系統(tǒng),該系統(tǒng)可實(shí)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(shí)現(xiàn)數(shù)據(jù)傳輸。并詳細(xì)說明系統(tǒng)的軟件設(shè)計(jì)。 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
偉福仿真器系統(tǒng)概述 本仿真器系統(tǒng)由仿真主機(jī)+仿真頭、MULT1A用戶板、實(shí)驗(yàn)板、開關(guān)電源等組成。本系統(tǒng)的特點(diǎn)是: 1.主機(jī)+仿真頭的組合,通過更換不同型號的仿真頭即可對各種不同類型的單片機(jī)進(jìn)行仿真,是一種靈活的多CPU仿真系統(tǒng)。采用主機(jī)+POD組合的方式,更換POD,可以對各種CPU進(jìn)行仿真。本仿真器主機(jī)型號為E2000/S,仿真頭型號為POD8X5X(可仿真51系列8X5X單片機(jī))。 2.雙平臺,具有DOS版本和WINDOWS版本,后者功能強(qiáng)大,中/英文界面任選,用戶源程序的大小不再有任何限制,支持ASM,c,PLM語言混合編程,具有項(xiàng)目管理功能,為用戶的資源共享、課題重組提供強(qiáng)有力的手段。支持點(diǎn)屏顯示,用鼠標(biāo)左鍵點(diǎn)一下源程序中的某一變量,即可顯示該變量的數(shù)值。有豐富的窗口顯示方式,多方位,動態(tài)地顯示仿真的各種過程,使用極為便利。本操作系統(tǒng)一經(jīng)推出,立即被廣大用戶所喜愛。 3.雙工作模式①.軟件模擬仿真(不要仿真器也能模擬仿真)。②硬件仿真。 4.雙CPU結(jié)構(gòu),100%不占用戶資源。全空間硬件斷點(diǎn),不受任何條件限制,支持地址、數(shù)據(jù)、外部信號、事件斷點(diǎn)、支持實(shí)時斷點(diǎn)計(jì)數(shù)、軟件運(yùn)行時間統(tǒng)計(jì)。 5.雙集成環(huán)境編輯、編譯、下載、調(diào)試全部集中在一個環(huán)境下。多種仿真器,多類CPU仿真全部集成在一個環(huán)境下??煞抡?1系列,196系列,PIC系列,飛利蒲公司的552、LPC764、DALLAS320,華邦438等51增強(qiáng)型CPU。為了跟上形勢,現(xiàn)在很多工程師需要面對和掌握不同的項(xiàng)目管理器、編輯器、編譯器。他們由不同的廠家開發(fā),相互不兼容,使用不同的界面,學(xué)習(xí)使用都很吃力。偉福WINDOWS調(diào)試軟件為您提供了一個全集成環(huán)境,統(tǒng)一的界面,包含一個項(xiàng)目管理器,一個功能強(qiáng)大的編輯器,匯編Make、Build和調(diào)試工具并提供千個與第三方編譯器的接口。由于風(fēng)格統(tǒng)一,大大節(jié)省了您的精力和時間。 6.強(qiáng)大的邏輯分析儀綜合調(diào)試功能。邏輯分析儀由交互式軟件菜單窗口對系統(tǒng)硬件的邏輯或時序進(jìn)行同步實(shí)時采樣,并實(shí)時在線調(diào)試分析,采集深度32K(E2000/L),最高時基采樣頻率達(dá)20MHz,40路波形,可精確實(shí)時反映用戶程序運(yùn)行時的歷史時間。系統(tǒng)在使用邏輯分析儀時,除普通的單步運(yùn)行、鍵盤斷點(diǎn)運(yùn)行、全速硬件斷點(diǎn)運(yùn)行外,還可實(shí)現(xiàn)各種條件組合斷點(diǎn)如:數(shù)據(jù)、地址、外部控制信號、CPU內(nèi)部控制信號、程序區(qū)間斷點(diǎn)等。由于邏輯儀可以直接對程序的執(zhí)行結(jié)果進(jìn)行分析,因此極大地便利于程序的調(diào)試。隨著科學(xué)技術(shù)的發(fā)展,單片機(jī)通訊方面的運(yùn)用越來越多。在通訊功能的調(diào)試時,如果通訊不正常,查找原因是非常耗時和低效的,您很難搞清楚問題到底在什么地方,是波特率不對,是硬件信道有問題,是通訊協(xié)儀有問題,是發(fā)方出錯還是收方出錯。有了邏輯儀,情況則完全不一樣,用它可以分別或者同時對發(fā)送方、接收方的輸入或者輸出波形進(jìn)行記錄、存儲、對比、測量等各種直觀的分析,可以將實(shí)際輸出通訊報文的波形與源程序相比較,可立即發(fā)現(xiàn)問題所在,從而極大地方便了調(diào)試。 7.強(qiáng)大的追蹤器功能追蹤功能以總線周期為單位,實(shí)時記錄仿真過程中CPU發(fā)生的總線事件,其觸發(fā)條件方式同邏輯分析儀。追蹤窗口在仿真停止時可收集顯示追蹤的CPU指令記憶信息,可以以總線反匯編碼模式、源程序模式對應(yīng)顯示追蹤結(jié)果。屏幕窗口顯示波形圖最多追蹤記憶指令32K并通過仿真器的斷點(diǎn)、單步、全速運(yùn)行或各種條件組合斷點(diǎn)來完成追蹤功能。總線跟蹤可以跟蹤程序的運(yùn)行軌跡。可以統(tǒng)計(jì)軟件運(yùn)行時間。
標(biāo)簽: 單片機(jī)原理 接口技術(shù) 實(shí)驗(yàn)指導(dǎo)書
上傳時間: 2013-11-01
上傳用戶:xiehao13
TLC1543是TI公司推出的采用SPI技術(shù)的模數(shù)轉(zhuǎn)換器。具有輸入通道多、高速、高分辨率、性價比高、易于和單片機(jī)接口等特點(diǎn),在各種數(shù)據(jù)采集系統(tǒng)中有著廣闊的應(yīng)用空間。51單片機(jī)、TLC1543加上很少的外圍器件即可構(gòu)成一個高性價比的數(shù)據(jù)采集系統(tǒng),同時TLC1543占用單片機(jī)I/O資源較少,使得單片機(jī)有足夠的I/O資源去完成如控制、顯示等功能。由AT89C52和TLC1543構(gòu)成的三相單獨(dú)可調(diào)400Hz中頻電源的數(shù)據(jù)采集系統(tǒng)在實(shí)際運(yùn)用中達(dá)到很好的效果。
上傳時間: 2013-11-17
上傳用戶:xg262122
氣壓是氣象監(jiān)測中的一個重要參數(shù),提出了一種氣壓數(shù)據(jù)采集模塊設(shè)計(jì)方案,該模塊采用數(shù)字氣壓傳感器MS5534B、MSP430單片機(jī)MSP430F2272和帶實(shí)時時鐘(RTC)64 KB鐵電存儲器。通過低功耗軟件設(shè)計(jì)方法以微安級整體平均功耗實(shí)現(xiàn)了氣壓數(shù)據(jù)的采集和存儲,適合電池供電的連續(xù)高精度氣壓采集應(yīng)用。給出了模塊的軟硬件設(shè)計(jì)以及MS5534B的性能指標(biāo)和使用經(jīng)驗(yàn)。 Abstract: Air pressure is an important parameter in weather monitor.This paper futs forward a new design scheme of low power-air pressure data acquisition module.The module uses a digital output barometer sensor MS5534B,MSP430 microcontroller MSP430F2272 and integrated RTC 64KB FRAM,precision air pressure measurement and storage chip.Another point of this module is low power consumption, so it is well suited for battery powered air pressure data acquisition applications. At the same time,the software and hardware deign of module is presented,And the speciaties and use notices of MS5534B are given.
上傳時間: 2014-12-27
上傳用戶:drink!
針對眾多低成本數(shù)據(jù)采集需求,采用帶有片上USB控制器和D/A轉(zhuǎn)換器的混合信號微處理器C8051F340,設(shè)計(jì)了一款可通過USB接口和LabVIEW圖形用戶界面實(shí)現(xiàn)與PC機(jī)聯(lián)機(jī)的數(shù)據(jù)采集器,同時借助系統(tǒng)的SD卡存儲獨(dú)立實(shí)現(xiàn)現(xiàn)場長時間采集數(shù)據(jù)。該數(shù)據(jù)采集器成本低,結(jié)構(gòu)簡單,體積小,已成功用于工業(yè)現(xiàn)場。 Abstract: Aiming at the need of low cost data acquisition, a data acquisition device is designed based on C8051F340 which is a mixed-signal microcontroller and integrates USB controller and A/D controller on a chip.The data acquisition device which can combine with PC by USB interface and LabVIEW graphical user interface,can realize data acquisition. At the same time,it can be solely run a long time in virtue of SD card in field.The date aequisition device features low cost,simple structure and little sharp, and it has been used in industry field.
標(biāo)簽: C8051F340 數(shù)據(jù) 集器設(shè)計(jì)
上傳時間: 2014-05-31
上傳用戶:1109003457
介紹一種基于單片機(jī)的多路溫度采集及監(jiān)控系統(tǒng),能夠測量6路溫度信號,具有計(jì)算機(jī)聯(lián)網(wǎng)功能,各測量點(diǎn)可以單獨(dú)監(jiān)控和設(shè)置,可根據(jù)用戶的需求自動控制。測量溫度范圍為-10 ℃~200 ℃,控制方式采用模擬量調(diào)壓模式。該系統(tǒng)具有控制精度高、沖擊小等特點(diǎn)。 Abstract: A temperature collecting and surveillance-controlling system based on sing-chip microcomputer is introduced. It can measure 6 channel signal of the temperature,and it has a function of network connection.The temperature measure points can be monitored and located, it can be controlled automatic according to user’s demand.The temperature range is -10℃ to 200℃.The model of control is adjustable voltage with simulation. It features high precision and little impact.
標(biāo)簽: 多路 溫度采集 監(jiān)控系統(tǒng)
上傳時間: 2013-10-23
上傳用戶:bjgaofei
介紹了CAN總線和P87C591單片機(jī)的特點(diǎn),給出了基于P87C591單片機(jī)的信號采集節(jié)點(diǎn)的軟、硬件設(shè)計(jì),指出了硬件電路設(shè)計(jì)中應(yīng)注意的問題,在軟件設(shè)計(jì)中重點(diǎn)介紹了節(jié)點(diǎn)初始化、報文發(fā)送和報文接收等子程序。 Abstract: The features of CAN Bus and the microcontroller P87C591 are introduced, and the design of hardware circuit and soft configuration of the signals collection node based on P87C591 are presented. The problems in designing hardware circuit are discussed.Initialization subprogram, transmiting subprogram and receiving subprogram are emphasized in soft configuration.
標(biāo)簽: P87C591 信號采集 節(jié)點(diǎn)
上傳時間: 2013-11-03
上傳用戶:BIBI
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