本文介紹了一種基于單片機的健身車轉(zhuǎn)速測量系統(tǒng)。該系統(tǒng)具有電路簡單、使用方便等特點。文中詳細介紹了該系統(tǒng)的工作原理,并且給出了它的硬件原理圖和軟件設(shè)計程序框圖。關(guān)鍵詞:轉(zhuǎn)速 單片機 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
The main oscillator allows either a crystal or single-ended input clock signal. Cost-sensitiveapplications typically use an external crystal with the on-chip oscillator circuit since it is the mostcost-effective solution. It is also possible to use the internal oscillator to clock the device after theboot process has completed.
The P82B96 offers many different ways in which it can be used as abus interface. In its simplest application it can be used as aninterface between bus systems operating from different supplyvoltages. Opto isolation between two bus systems is possible, andalso the availability of the Tx and Rx signals permits interfacing ofthe P82B96 with other bus systems which separate the forwardoutput path, from the backward input signal path.
基于PIC單片機的脈沖電源:設(shè)計了一種金屬凝固過程用脈沖電源。該電源采用PIC16F877作為主控芯片，實現(xiàn)對窄脈沖電流幅值的檢測，以及時電流脈沖幅值根據(jù)模糊PID算法進行閑環(huán)控制。使用結(jié)果表明：該電源的輸出脈沖波形良好，電流幅值穩(wěn)定，滿足合金材料凝固過程的工藝要求且運行穩(wěn)定可靠。關(guān)鍵詞：脈沖電源；PIC16F877單片機；模糊PID；閑環(huán)控制
Abstract：A kind of pulse power supply was designed which uses in the metal solidification process ．．I11is power supply used PIC16F877 to take the master control chip reali on to the narrow pulse electric current peak-to-peak value examination，carried on the closed-loop control to the electric current pulse peak-to-peak value basis fuzzy PID algorithm．The use result indicated ，this power supply output se profile is good，and the electric current peak-to-p~k value is stable，It satisfies the alloy material solidification process the technological requirement and movement stable reliable，Key words：p se po wer supply；PIC16F877single-chip microcontroller；f r PID；closed-loop control
本文依據(jù)集成電路設(shè)計方法學(xué)，探討了一種基于標準Intel 8086 微處理器的單芯片計算機平臺的架構(gòu)。研究了其與SDRAM，8255 并行接口等外圍IP 的集成，并在對AMBA協(xié)議和8086 CPU分析的基礎(chǔ)上，采用遵從AMBA傳輸協(xié)議的系統(tǒng)總線代替?zhèn)鹘y(tǒng)的8086 CPU三總線結(jié)構(gòu)，搭建了基于8086 IP 軟核的單芯片計算機系統(tǒng)，并實現(xiàn)了FPGA 功能演示。關(guān)鍵詞：微處理器； SoC；單芯片計算機；AMBA 協(xié)議
Design of 8086 CPU Based Computer-on-a-chip System（School of Electrical Engineering and Automation, Heifei University of Technology, Hefei, 230009,China）Abstract: According to the IC design methodology, this paper discusses the design of one kind of Computer-on-a-chip system architecture, which is based on the standard Intel8086 microprocessor,investigates how to integrate the 8086 CPU and peripheral IP such as, SDRAM controller, 8255 PPI etc. Based on the analysis of the standard Intel8086 microprocessor and AMBA Specification,the Computer-on-a-chip system based on 8086 CPU which uses AMBA bus instead of traditional three-bus structure of 8086 CPU is constructed, and the FPGA hardware emulation is fulfilled.Key words: Microprocessor; SoC; Computer-on-a-chip; AMBA Specification
基于LabVIEW和單片機的空調(diào)溫度場測量系統(tǒng)的研究:室內(nèi)溫度是空調(diào)系統(tǒng)舒適性的重要指標,對其及時、準確地測量顯得非常重要。介紹單片機AT89C51 和數(shù)字式、單總線型溫度傳感器DS18B20 組成矩形測量網(wǎng)絡(luò)采集空調(diào)室內(nèi)40 點溫度,LabVIEW作為開發(fā)平臺,二者之間通過串口實現(xiàn)數(shù)據(jù)通信,利用LabVIEW強大的數(shù)據(jù)處理和顯示功能對采集的空調(diào)溫度場數(shù)據(jù)進行實時處理、分析和顯示,詳細介紹了系統(tǒng)的硬件結(jié)構(gòu)和軟件模塊的設(shè)計方案。關(guān)鍵詞:單片機;DS18B20 ;LabVIEW;串行通信
Abstract : Temperature is a very important criterion of air condition system′s comfort , so it is very significant to measure it accurately and real timely. This paper int roduces a data acquisition system of measuring 40 point s temperature for air condition room based on single wire digital sensor DS18B20 and microcont roller AT89C51 which are composed of rectangle measuring meshwork. The data communication between LabVIEW and microcont roller is executed via serial port ,and the temperature field data of air condition room are processed analyzed and displayed on LabVIEW. The hardware and software modules are also given in detail.Keywords : single chip ;DS18B20 ;LabVIEW; serial communication
基于單片機的步進電機開環(huán)控制系統(tǒng):通過ATMEL89C51單片機對步進電機進行控制,主要介紹了步進電機控制器、驅(qū)動電路和LED顯示電路的設(shè)計,實現(xiàn)了步進電機的開環(huán)控制。在步進電機控制器的設(shè)計中,重點闡述了脈沖產(chǎn)生電路以及對速度的控制。該系統(tǒng)具有成本低、控制方便的特點。關(guān)鍵詞: 單片機; 步進電機; 開環(huán)控制
Abstract: The design using ATMEL89C51 single chip to control the step2motor with its controller, driving circuit and LED disp lay circuit to realize step motor open2loop controlwere introduced. For the controller in this design,the circuit to p roduce pulse and the speed controlwere expatiated emphatically. This system possesses features of lower cost, easier control.Key words: single ch ip; step2motor; open2loop con trol
