針對材料試驗(yàn)機(jī)等設(shè)備中要求測量或控制材料拉伸或壓縮的位移，一般采用光電軸角編碼器檢測位置信號，輸出正交編碼脈沖信號。若采用其他方法檢測位置信號，必然導(dǎo)致電路設(shè)計(jì)復(fù)雜，可靠性降低。因此，提出一種基于LS7266R1的電子式萬能材料試驗(yàn)機(jī)設(shè)計(jì)方案。給出了試驗(yàn)機(jī)中的控制器工作原理，LS7266R1與單片機(jī)的接口硬件設(shè)計(jì)，以及主程序軟件流程圖。巧妙地把力量傳感器，位移傳感器等機(jī)械運(yùn)動狀態(tài)的壓力或拉力以及位置坐標(biāo)，變成了電壓信號和電脈沖數(shù)字信號，供A/D測量和LS7266R1計(jì)數(shù)，從而實(shí)現(xiàn)了獨(dú)立完成材料試驗(yàn)控制或通過PC機(jī)串口命令完成材料試驗(yàn)控制。
Abstract:
Aiming at the requirement that the displacement of the tension and compression always be tested and controlled in the equipement such as material testing machine. The position signal was tested by photoelectric axial angle coder. Therefore， the paper proposes the design of electronic universal testing machine design based on LS7266R1. If the position signal detected by other methods， will inevitably lead to the circuit design complexity， reliability decreased. The work theory of the controller， the hardware interface design between LS7266R1 and single chip， and the flow chart of main program， are presented in this paper. The signal of the compression or tension power and displacement at working， which tested by power sensor and displacement sensor especially， is changed into electric voltage and electric pulse numerical signals. And these signals can be tested by A/D and counted by LS7266R1. Finally the test of the material properties can be controlled by itself， or controlled by the COM command of PC.
利用Atmel公司的ATmega168微處理器，采用A/D轉(zhuǎn)換方式來實(shí)現(xiàn)按摩椅控制器的鍵盤接口，通過在硬件電路中巧妙地選擇電阻，在軟件設(shè)計(jì)中采用數(shù)字濾波、二分法和區(qū)間鑒定等方法，靈敏可靠地實(shí)現(xiàn)了按摩椅中30個(gè)按鍵的處理。給出了硬件電路設(shè)計(jì)和軟件設(shè)計(jì)思想以及部分匯編代碼。
Abstract:
This paper chooses A/D conversion method to realize the keyboard interface of the controller by using ATmega168 microchip from Atmel Company.It accomplishes 30-key dealing sensitively and reliably in massage chair through skillfully selecting resistors in hardware circuit and using digital filter,dichotomy and area-judging method in software design.The hardware design circuit, software design idea and partly assembles code are presented mainly.
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(bào)文發(fā)送和報(bào)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.
提出一種基于單片機(jī)AT89C51SND1C的MP3播放系統(tǒng)的設(shè)計(jì)方案。單片機(jī)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(shè)備從PC機(jī)上直接下載，液晶顯示采用LCD1602。方案設(shè)計(jì)簡單，性價(jià)比高，低功耗，易擴(kuò)展。由于采用的是通用單片機(jī)實(shí)現(xiàn)的，可以很容易地移植到其他微控制器系統(tǒng)中，有很強(qiáng)的市場競爭能力和實(shí)用價(jià)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.
針對當(dāng)前安檢力學(xué)試驗(yàn)機(jī)所能完成的試驗(yàn)種類單一、自動化程度低等問題，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)過大量測試試驗(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.
PROTEUS VSM在單片機(jī)系統(tǒng)仿真中的應(yīng)用:：介紹了單片機(jī)系統(tǒng)仿真工具PROTEUS VSM 及其在單片機(jī)系統(tǒng)仿真中的應(yīng)用，給出了具體的應(yīng)用實(shí)例，詳細(xì)地介紹了PROTEUS VSM 與Keil uVision3的接口方法。關(guān)鍵詞：單片機(jī)；Keil uVision3；仿真；外圍器件；PROTEUS VSM；
Abstract：This paper introduces the simulation tool for M CU system —PROTEUS VSM ， and presents the application ofPROTEUS VSM in MCU system simulation through an applicable example．The way of interfacing PROTEUS VSM to Keil uVision3is also presented in details．Keywords：MCU ；Keil uVision3；simulation；peripheral devices；PROTEUS VSM ；
本文介紹了一種基于單片機(jī)的健身車轉(zhuǎn)速測量系統(tǒng)。該系統(tǒng)具有電路簡單、使用方便等特點(diǎn)。文中詳細(xì)介紹了該系統(tǒng)的工作原理,并且給出了它的硬件原理圖和軟件設(shè)計(jì)程序框圖。關(guān)鍵詞:轉(zhuǎn)速 單片機(jī) 測量ABSTRACT :This paper introduces a measuring system of the rotational velocity of exercise bike based on single - chip microcomputer . It has such advantages : simple circuit ,convenient use and so on. The work principle is presented in detail in this paper and the block diagram of hardware and program flow chart are giv2 en as well .KEYWORDS :Rotational velocity Single - chip microcomputer Measuring
Luminary Micro Stellaris™ microcontrollers that are equipped with an analog-to-digital converter(ADC), use an innovative sequence-based sampling architecture designed to be extremely flexible,yet easy to use. This application note describes the sampling architecture of the ADC. Sinceprogrammers can configure Stellaris microcontrollers either through the powerful StellarisFamilyDriver Library or through direct writes to the device's control registers, this application note describesboth methods. The information presented in this document is intended to complement the ADCchapter of the device datasheet, and assumes the reader has a basic understanding of howADCsfunction.
高壓雙管反激變換器的設(shè)計(jì):介紹一種雙管反激的電路拓?fù)洌治隽似涔ぷ髟恚o出了一些關(guān)鍵技術(shù)參數(shù)的計(jì)算公式，設(shè)計(jì)并研制成功的30W 380V AC5 0H z/510V DC/+15.1 V DC(1A )、+5.2VDC(2A)輔助開關(guān)電源具有功率密度高、變換效率高、可靠性高等優(yōu)良的綜合性能。該變換器在高電壓輸人情況下有重要的應(yīng)用價(jià)值。【關(guān) 鍵 詞 】變換器，輔助開關(guān)電源，雙管反激
[Abstract】 A n e wt opologyfo rd oubles witchfl ybackc onverteris in troduced.Th eo perationp rincipleis a nalyzeda nds ome for mulas for calculating key parameters for the topology are presented. The designed and produced auxiliary switching power supply,i. e. 30W 380V AC5 0H z/5 10V DC/+15.1 V DC《1A )、+5.2 V DC《2A )，hase xcellentc omprehensivep erformances sucha sh ighp owerd ensity, hi ghc onversione fficiencya ndh ighr eliability.Th isc onverterh asim portanta pplicationv aluef orh igh input voltag
[Keywords ]converter,au xiliary switchingp owers upply,do ubles witchf lybac
針對無位置傳感器無刷直流電機(jī)的位置檢測問題，本文應(yīng)用單片機(jī)成功地實(shí)現(xiàn)了一種軟件檢測方法，并給出了實(shí)測波形加以驗(yàn)證。關(guān)鍵詞： 無刷直流電機(jī) 無傳感器 位置檢測Abstract: As to the position-detecting problem of sensorless brushless DC motor, a softwarerealization by microcomputer is proposed successfully in the paper. Experiment results are also presented to verify the method.Keywords: brushless DC motor, sensorless, position detecting
