本文介紹了基于AT89C52 單片機的自動水溫控制系統(tǒng)的設(shè)計及實現(xiàn)過程。該系統(tǒng)具有實時顯示、溫度測量、溫度設(shè)定并能根據(jù)設(shè)定值對環(huán)境溫度進行調(diào)節(jié)實現(xiàn)控溫的目的以及達(dá)到上下限溫度報警功能，控制算法是基于數(shù)字PID 算法。關(guān)鍵詞 ：PID AT89C52 脈寬調(diào)制 實時 Abstract ： This article describes AT89C52 single-chip microcomputer-basedautomatic water TemperATure control system design and implementation process. Thesystem has real-time display, TemperATure measurement, TemperATure settings and theenvironment in accordance with the TemperATure settings adjusted to achieve thepurpose of TemperATure control and reach the upper and lower limits of TemperATurealarm function, the control algorithm is based on the digital PID algorithm.Keyword: PID AT89C52 PWM real time
上傳時間： 2013-10-10
上傳用戶：歸海惜雪
用NTC熱敏電阻做溫度采集:本應(yīng)用例實現(xiàn)NTC熱敏電阻器對溫度的測量。熱敏電阻器把溫度的變化轉(zhuǎn)換為電阻阻值的變化，再應(yīng)用相應(yīng)的測量電路把阻值的變化轉(zhuǎn)換為電壓的變化；SPMC75F2413A內(nèi)建8路ADC可以把模擬的電壓值轉(zhuǎn)換為數(shù)字信號，對數(shù)值信號進行處理可以得到相應(yīng)的溫度值。1.2 熱敏電阻器熱敏電阻有電阻值隨溫度升高而升高的正溫度系數(shù)（Positive TemperATure Coefficient簡稱PTC）熱敏電阻和電阻值隨溫度升高而降低的負(fù)溫度系數(shù)（Negative TemperATure Coefficient簡稱NTC）熱敏電阻。NTC熱敏電阻器，是一種以過渡金屬氧化物為主要原材料，采用電子陶瓷工藝制成的熱敏半導(dǎo)體陶瓷組件。這種組件的電阻值隨溫度升高而降低，利用這一特性可制成測溫、溫度補償和控溫組件，又可以制成功率型組件，抑制電路的浪涌電流。
上傳時間： 2013-11-16
上傳用戶：sssnaxie
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(biāo),對其及時、準(zhǔn)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(xì)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
標(biāo)簽： LabVIEW 單片機 空調(diào) 溫度場
上傳時間： 2014-05-05
上傳用戶：KSLYZ
基于單片機的汽車多功能報警系統(tǒng)設(shè)計The Design of Automobile Multi-function AlarmingBased on Single Chip Computer劉法治趙明富寧睡達(dá)(河 南 科 技 學(xué) 院 ，新 鄉(xiāng) 453 00 3)摘要介紹了一種基于單片機控制的汽車多功能報警系統(tǒng)，它能對汽車的潤滑系統(tǒng)油壓、制動系統(tǒng)氣壓、冷卻系統(tǒng)溫度、輪胎欠壓及防盜進行自動檢測，并在發(fā)現(xiàn)異常情況時，發(fā)出聲光報警。闡述了該報警系統(tǒng)的硬件組成及軟件設(shè)計方法。關(guān)鍵詞單片機傳感器數(shù)模轉(zhuǎn)換報警Abstract Am ulti-fimctiona utomobilea larnungs ystemb asedo ns inglec hipc omputerco ntorlis in torducedin th isp aper.Th eo ilpr essuero flu bricatesystem, air pressure of braking system, TemperATure of cooling system, under pressure of tyre and guard against theft， detected automaticaly場thesystem. Audio and visual alarms wil be provided under abnormal conditions廠The hardware composition and software design of the system， described.Keywords Singlec hipc omputer Sensor Digital-t-oanaloguec onversion Alarmin 汽車多功能報苦器硬件系統(tǒng)設(shè)計根據(jù) 系 統(tǒng) 實際需要和產(chǎn)品性價比，選用ATMEL公司新生產(chǎn)的采用CMOs工藝的低功耗、高性能8位單片機AT89S52作為系統(tǒng)的控制器。AT89S52的片內(nèi)有8k Bytes LSP Flash閃爍存儲器，可進行100(〕次寫、擦除操作;256Bytes內(nèi)部數(shù)據(jù)存儲器(RAM);3 2 根可編程輸N輸出線;2個可編程全雙工串行通道;看門狗(WTD)電路等。系統(tǒng)由傳感器、單片機、模數(shù)轉(zhuǎn)換器、無線信號發(fā)射電路、指示燈驅(qū)動電路、聲光報警驅(qū)動電KD一9563，發(fā)出三聲二閃光。并觸發(fā)一個高電平，驅(qū)動無線信號發(fā)射電路。
上傳時間： 2013-11-09
上傳用戶：gxmm
Abstract: Designers who must interface 1-Wire TemperATure sensors with Xilinx field-programmable gate arrays(FPGAs) can use this reference design to drive a DS28EA00 1-Wire slave device. The downloadable softwarementioned in this document can also be used as a starting point to connect other 1-Wire slave devices. The systemimplements a 1-Wire master connected to a UART and outputs TemperATure to a PC from the DS28EA00 TemperATuresensor. In addition, high/low alarm outputs are displayed from the DS28EA00 PIO pins using LEDs.
標(biāo)簽： PicoBlaze Create Master Xilinx
上傳時間： 2013-11-05
上傳用戶：a6697238
波長信號的解調(diào)是實現(xiàn)光纖光柵傳感網(wǎng)絡(luò)的關(guān)鍵，基于現(xiàn)有的光纖光柵傳感器解調(diào)方法，提出一種基于FPGA的雙匹配光纖光柵解調(diào)方法，此系統(tǒng)是一種高速率、高精度、低成本的解調(diào)系統(tǒng)，并且通過引入雙匹配光柵有效地克服了雙值問題同時擴大了檢測范圍。分析了光纖光柵的測溫原理并給出了該方案軟硬件設(shè)計，綜合考慮系統(tǒng)的解調(diào)精度和FPGA的處理速度給出了基于拉格朗日的曲線擬合算法。 Abstract: Sensor is one of the most important application of the fiber grating. Wavelength signal demodulating is the key techniques to carry out fiber grating sensing network， based on several existing methods of fiber grating sensor demodulation inadequate， a two-match fiber grating demodulation method was presented. This system is a high-speed， high precision， low-cost demodulation system. And by introducing a two-match grating effectively overcomes the problem of double value while expands the scope of testing. This paper analyzes the principle of fiber Bragg grating TemperATure and gives the software and hardware design of the program. Considering the system of demodulation accuracy and processing speed of FPGA，this paper gives the curve fitting algorithm based on Lagrange.
標(biāo)簽： FPGA 光纖光柵 解調(diào)系統(tǒng)
上傳時間： 2014-07-24
上傳用戶：caiguoqing
多遠(yuǎn)程二極管溫度傳感器-Design Considerations for pc thermal management Multiple RDTS (remote diode TemperATure sensing) provides the most accurate method of sensing an IC’s junction TemperATure. It overcomes thermal gradient and placement issues encountered when trying to place external sensors. PCB component count decreases when using a device that provides multiple inputs.Better TemperATure sensing improves product performance and reliability. Disk drive data integrity suffers at elevated TemperATures. IBM published an article stating that a 5°C rise in operating TemperATure causes a 15% increase in the drive’s failure rate. The overall performance of a system can be improved by providing a more accurate TemperATure measurement of the most critical devices allowing them to run just a few degrees hotter.The LM83 directly senses its own TemperATure and the TemperATure of three external PN junctions. One is dedicated to the CPU of choice, the other two go to other parts of your system that need thermal monitoring such as the disk drive or graphics chip. The SMBus-compatible LM83 supports SMBus timeout and logic levels. The LM83 has two interrupt outputs; one for user-programmable limits and WATCHDOG capability (INT), the other is a Critical TemperATure Alarm output (T_CRIT_A) for system power supply shutdown.
標(biāo)簽： Considerat Design 遠(yuǎn)程 二極管
上傳時間： 2014-12-21
上傳用戶：ljd123456
6小時學(xué)會labview, labview Six Hour Course – Instructor Notes This zip file contains material designed to give students a working knowledge of labview in a 6 hour timeframe. The contents are: Instructor Notes.doc – this document. labviewIntroduction-SixHour.ppt – a PowerPoint presentation containing screenshots and notes on the topics covered by the course. Convert C to F (Ex1).vi – Exercise 1 solution VI. Convert C to F (Ex2).vi – Exercise 2 solution subVI. Thermometer-DAQ (Ex2).vi – Exercise 2 solution VI. TemperATure Monitor (Ex3).vi – Exercise 3 solution VI. Thermometer (Ex4).vi – Exercise 4 solution subVI. Convert C to F (Ex4).vi – Exercise 4 solution subVI. TemperATure Logger (Ex4).vi – Exercise 4 solution VI. Multiplot Graph (Ex5).vi – Exercise 5 solution VI. Square Root (Ex6).vi – Exercise 6 solution VI. State Machine 1 (Ex7).vi – Exercise 7 solution VI. The slides can be presented in two three hour labs, or six one hour lectures. Depending on the time and resources available in class, you can choose whether to assign the exercises as homework or to be done in class. If you decide to assign the exercises in class, it is best to assign them in order with the presentation. This way the students can create VI’s while the relevant information is still fresh. The notes associated with the exercise slide should be sufficient to guide the students to a solution. The solution files included are one possible solution, but by no means the only solution.
標(biāo)簽： labview
上傳時間： 2013-10-13
上傳用戶：zjwangyichao
在研究傳統(tǒng)家用燃?xì)鈭缶鞯幕A(chǔ)上，以ZigBee協(xié)議為平臺，構(gòu)建mesh網(wǎng)狀網(wǎng)絡(luò)實現(xiàn)網(wǎng)絡(luò)化的智能語音報警系統(tǒng)。由于傳感器本身的溫度和實際環(huán)境溫度的影響，傳感器標(biāo)定后采用軟件補償方法。為了減少系統(tǒng)費用，前端節(jié)點采用半功能節(jié)點設(shè)備，路由器和協(xié)調(diào)器采用全功能節(jié)點設(shè)備，構(gòu)建mesh網(wǎng)絡(luò)所形成的家庭內(nèi)部報警系統(tǒng)，通過通用的電話接口連接到外部的公用電話網(wǎng)絡(luò)，啟動語音模塊進行報警。實驗結(jié)果表明，在2.4 GHz頻率下傳輸，有墻等障礙物的情況下，節(jié)點的傳輸距離大約為35 m，能夠滿足家庭需要，且系統(tǒng)工作穩(wěn)定，但在功耗方面仍需進一步改善。 Abstract: On the basis of studying traditional household gas alarm system, this paper proposed the platform for the ZigBee protocol，and constructed mesh network to achieve network-based intelligent voice alarm system. Because of the sensor TemperATure and the actual environment TemperATure, this system design used software compensation after calibrating sensor. In order to reduce system cost, semi-functional node devices were used as front-end node, however, full-function devices were used as routers and coordinator，constructed alarm system within the family by building mesh network，connected to the external public telephone network through the common telephone interface, started the voice alarm module. The results indicate that nodes transmit about 35m in the distance in case of walls and other obstacles by 2.4GHz frequency transmission, this is able to meet family needs and work steadily, but still needs further improvement in power consumption.
標(biāo)簽： ZigBee 無線智能 家 報警系統(tǒng)
上傳時間： 2013-10-30
上傳用戶：swaylong
Abstract: Designers who must interface 1-Wire TemperATure sensors with Xilinx field-programmable gate arrays(FPGAs) can use this reference design to drive a DS28EA00 1-Wire slave device. The downloadable softwarementioned in this document can also be used as a starting point to connect other 1-Wire slave devices. The systemimplements a 1-Wire master connected to a UART and outputs TemperATure to a PC from the DS28EA00 TemperATuresensor. In addition, high/low alarm outputs are displayed from the DS28EA00 PIO pins using LEDs.
標(biāo)簽： PicoBlaze Create Master Xilinx
上傳時間： 2013-11-12
上傳用戶：大三三
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