S7-200 系列小型PLC Micro PLC 可應(yīng)用于各種自動(dòng)化系統(tǒng)緊湊的結(jié)構(gòu)低廉的成 本以及功能強(qiáng)大的指令集使得S7-200 PLC 成為各種小型控制任務(wù)理想的解決方案S7- 200 產(chǎn)品的多樣化以及基于Windows 的編程工具使您能夠更加靈活地完成自動(dòng)化任 務(wù)
標(biāo)簽: 300 可編程序控制器 參考手冊(cè)
上傳時(shí)間: 2013-11-20
上傳用戶:Divine
為提高電容測(cè)量精度,針對(duì)電容式傳感器的工作原理設(shè)計(jì)了基于PIC16LF874單片機(jī)電容測(cè)量模塊。簡(jiǎn)單闡述了電容測(cè)量電路的應(yīng)用背景和國(guó)內(nèi)外研究現(xiàn)狀,介紹了美國(guó)Microchip公司PIC16LF874單片機(jī)的特性。電容式傳感器輸出的動(dòng)態(tài)微弱電容信號(hào)通過(guò)PS021型電容數(shù)字轉(zhuǎn)換器把模擬量數(shù)據(jù)轉(zhuǎn)換成數(shù)字量數(shù)據(jù),所測(cè)數(shù)據(jù)由PIC16LF874單片機(jī)應(yīng)用程序進(jìn)行處理、顯示和保存。實(shí)驗(yàn)結(jié)果表明,固定電容標(biāo)稱值為10~20 pF 的測(cè)量值相對(duì)誤差在1%以內(nèi),同時(shí)也可知被測(cè)電容容值越大,測(cè)量值和標(biāo)稱值相對(duì)誤差越小。 Abstract: To improve the accuracy of capacitance measurement,aimed at the principle of work of mercury capacitance acceleration transducer,the design of micro capacitance measurement circuit is based on the key PIC16LF874 chip. Briefly discusses the application of the capacitance measuring circuit for the background and status of foreign researchers,focusing on the United States PIC16LF874 microcontroller features. Capacitive sensor outputed signal through the dynamics of weak PS021-chip capacitors (capacitancedigital converter) to convert analog data into digital data,the measured data from the PIC16LF874 microcontroller application process, display and preservation. Experimental results show that the fixed capacitor 10pF ~ 20pF nominal value of the measured value of relative error is within 1%,but also it canbe seen the value of the measured capacitance larger,measuring value and the nominal value of relative error smaller.
上傳時(shí)間: 2013-10-29
上傳用戶:wojiaohs
單片機(jī)作為一種微型計(jì)算機(jī),其內(nèi)部具有一定的存儲(chǔ)單元(8031除外),但由于其內(nèi)部存儲(chǔ)單元及端口有限,很多情況下難以滿足實(shí)際需求。為此介紹一種新的擴(kuò)展方法,將數(shù)據(jù)線與地址線合并使用,通過(guò)軟件控制的方法實(shí)現(xiàn)數(shù)據(jù)線與地址線功能的分時(shí)轉(zhuǎn)換,數(shù)據(jù)線不僅用于傳送數(shù)據(jù)信號(hào),還可作為地址線、控制線,用于傳送地址信號(hào)和控制信號(hào),從而實(shí)現(xiàn)單片機(jī)與存儲(chǔ)器件的有效連接。以單片機(jī)片外256KB數(shù)據(jù)存儲(chǔ)空間的擴(kuò)展為例,通過(guò)該擴(kuò)展方法,僅用10個(gè)I/O端口便可實(shí)現(xiàn),與傳統(tǒng)的擴(kuò)展方法相比,可節(jié)約8個(gè)I/O端口。 Abstract: As a micro-computer,the SCM internal memory has a certain units(except8031),but because of its internal storage units and the ports are limited,in many cases it can not meet the actual demand.So we introduced a new extension method,the data line and address lines combined through software-controlled approach to realize the time-conversion functions of data lines and address lines,so the data lines not only transmited data signals,but also served as address lines and control lines to transmit address signals and control signals,in order to achieve an effective connection of microcontroller and memory chips.Take microcontroller chip with256KB of data storage space expansion as example,through this extension method,with only10I/O ports it was achieved,compared with the traditional extension methods,this method saves8I/O ports.
標(biāo)簽: 單片機(jī) P0口 數(shù)據(jù)存儲(chǔ)器 擴(kuò)展
上傳時(shí)間: 2014-12-26
上傳用戶:adada
介紹基于VHDL的微型打印機(jī)控制器的設(shè)計(jì)。論述了微型打印機(jī)的基本原理,以及實(shí)現(xiàn)控制器的VHDL語(yǔ)言設(shè)計(jì)。打印機(jī)的數(shù)據(jù)來(lái)自系統(tǒng)中的存儲(chǔ)模塊,根據(jù)需要控制打印。該微型打印機(jī)控制器可取代傳統(tǒng)的微型打印機(jī),且抗干擾性好,可靠性高,具有較強(qiáng)的移植性,稍加改動(dòng)就可應(yīng)用于不同場(chǎng)合。 Abstract: This paper introduced the design method of micro printer controller based on VHDL.The basic principles of microprinter is explained,as well as the realization of the controller by VHDL language.The printer data is from the system memory modules,can control printer.The design of microprinter controller has antigood and high reliability,it can replace the traditional printer.The controller has very good portability,and need little modify that can use in different situation.
標(biāo)簽: VHDL 微型打印機(jī) 制器設(shè)計(jì)
上傳時(shí)間: 2013-11-03
上傳用戶:dudu1210004
P89V51RD2是PHILIPS公司推出的51系列的新型微控制器,它包含64KBFlash和1024字節(jié)的數(shù)據(jù)RAM,支持并行和串行的在系統(tǒng)編程(ISP)和在應(yīng)用中編程(IAP),具有SPI和增強(qiáng)型UART,包含一個(gè)PCA(可編程計(jì)數(shù)器陣列),具有PWM和捕獲/比較功能。該芯片有一個(gè)最突出的特點(diǎn)就是帶有自調(diào)試功能(SoftICE),該功能使得芯片可以在KeilµVision2編程環(huán)境下用KeilMonitor-51Driver直接調(diào)試程序。 為幫助用戶盡快熟悉并掌握P89V51RD2系列單片機(jī)的SoftICE特性,作者用該單片機(jī)制作了一個(gè)簡(jiǎn)易的仿真器,配合使用KeilµVision2的硬件仿真環(huán)境,可實(shí)現(xiàn)對(duì)程序的單步仿真、多步仿真及全速運(yùn)行下的仿真。
上傳時(shí)間: 2013-11-09
上傳用戶:meiguiweishi
針對(duì)當(dāng)前安檢力學(xué)試驗(yàn)機(jī)所能完成的試驗(yàn)種類單一、自動(dòng)化程度低等問(wèn)題,提出一種以ATmega128單片機(jī)為核心控制器的安檢力學(xué)試驗(yàn)機(jī)的設(shè)計(jì)。詳細(xì)闡述了該安檢力學(xué)試驗(yàn)機(jī)各個(gè)組成部分的設(shè)計(jì)原理和方案,并且給出了各部分的軟件設(shè)計(jì)思想和操作流程。經(jīng)過(guò)大量測(cè)試試驗(yàn)表明:設(shè)計(jì)的安檢力學(xué)試驗(yàn)機(jī)可以完成多達(dá)十余種的力學(xué)安檢試驗(yàn),完全符合相關(guān)國(guó)家標(biāo)準(zhǔn),并且具有數(shù)據(jù)采集精度高、傳輸速度快、操作安全簡(jiǎn)便等特點(diǎn),實(shí)現(xiàn)了安檢設(shè)備的多功能化、數(shù)字化和自動(dòng)化。 Abstract: Currently, many mechanical security testing machines have only one function. The degree of automation of them is low. To solve those problems, a new kind of mechanical security testing machine, using ATmega128 micro-controller as its core controller, has been advanced. It describes the components of the machine. The principles and the scheme in the designing processes are presented in detail, and the software architecture and the operation processes of each part are given. After having done many testing, we have reached the following conclusions: the mechanical security testing machine presented can do over ten mechanical security tests complying with related national standards. It has high data acquisition accuracy and high transmission speed. The operation of the machine is simple and safe. In general, this machine is a multi-functional, highly automatic, digitalized security testing device.
標(biāo)簽: ATmega 128 安檢 試驗(yàn)機(jī)
上傳時(shí)間: 2013-11-05
上傳用戶:a67818601
µPSD3251標(biāo)準(zhǔn)的8032內(nèi)核-3個(gè)16位定時(shí)器/計(jì)數(shù)器-2個(gè)外部中斷雙FLASH結(jié)構(gòu)-64K字節(jié)MainFLASH-16K字節(jié)SecondFLASH-2K字節(jié)的SRAM-可編程邏輯-DPLD,CPLD-提供I2C,UART接口,PWM,ADC-提供更多的I/O口-高達(dá)50根I/O口線內(nèi)置WDT在系統(tǒng)編程(ISP)在應(yīng)用中再編程(IAP)·PSD結(jié)構(gòu)提高了8051的性能·-可編程系統(tǒng)外圍芯片·-雙FLASH實(shí)現(xiàn)在應(yīng)用中再編程(IAP)·-允許8051程序代碼和數(shù)據(jù)在存儲(chǔ)器間的切換,滿足用戶的需要·-JTAG編程特別適用于實(shí)驗(yàn)開(kāi)發(fā)和生產(chǎn)階段的需要·高達(dá)288K字節(jié)的存儲(chǔ)單元,為什么要這么大的存儲(chǔ)單元·-使用C語(yǔ)言編程需要用較大的存儲(chǔ)空間·-菜單、圖形、顯示類的用戶接口要用到大量的存儲(chǔ)空間·-多種語(yǔ)言、字體以及數(shù)據(jù)表需要大空間存儲(chǔ)器·-要想數(shù)據(jù)轉(zhuǎn)換速度快同樣需要大量的存儲(chǔ)單元·-數(shù)據(jù)記錄·-低成本·-與其他的以8051或某種8位MCU為內(nèi)核帶有大容量的SRAM和Flash的設(shè)備相比,uPSD為用節(jié)省了成本
上傳時(shí)間: 2013-10-09
上傳用戶:rocwangdp
自從20世紀(jì)70年代單片機(jī)問(wèn)世以來(lái),由于其體積小、功耗低,被廣泛應(yīng)用在工業(yè)控制、智能儀表、家用電器和通訊等領(lǐng)域,并受到越來(lái)越多的關(guān)注。MCS-51系列單片機(jī)更是單片機(jī)史上的里程碑和奇葩,歷經(jīng)二十多年,依然新品疊出。
上傳時(shí)間: 2013-11-21
上傳用戶:yeluorag
C51BOX仿真器是一款方便小巧的仿真器,C51BOX通過(guò)與KEIL µVision2 Debugger軟件的配合,完成C51程序的加載、單步、斷點(diǎn)、全速運(yùn)行等功能。C51BOX無(wú)需外接交流電源,直接USB供電,同時(shí)也可為外接模塊供電。輸出電壓和IO電平可調(diào),便于直接調(diào)試2.7V-5V邏輯電平的器件,如液晶模塊、AD/DA芯片、EEPROM等。
上傳時(shí)間: 2014-01-26
上傳用戶:lbbyxmraon
隨著單片機(jī)功能集成化的發(fā)展,其應(yīng)用領(lǐng)域也逐漸地由傳統(tǒng)的控制,擴(kuò)展為控制處理、數(shù)據(jù)處理以及數(shù)字信號(hào)處理(DSP,Digital Signal Processing)等領(lǐng)域。凌陽(yáng)的16位單片機(jī)就是為適應(yīng)這種發(fā)展而設(shè)計(jì)的。它的CPU內(nèi)核采用凌陽(yáng)最新推出的µ’nSP™(Microcontroller and Signal Processor)16位微處理器芯片(以下簡(jiǎn)稱µ’nSP™)。圍繞µ’nSP™所形成的16位µ’nSP™系列單片機(jī)(以下簡(jiǎn)稱µ’nSP™家族)采用的是模塊式集成結(jié)構(gòu),它以µ’nSP™內(nèi)核為中心集成不同規(guī)模的ROM、RAM和功能豐富的各種外設(shè)接口部件。
標(biāo)簽: SPCE 061A 061 單片機(jī)
上傳時(shí)間: 2013-11-07
上傳用戶:wpwpwlxwlx
蟲(chóng)蟲(chóng)下載站版權(quán)所有 京ICP備2021023401號(hào)-1