介紹一種基于C8051單片機(jī)的動(dòng)態(tài)心電監(jiān)護(hù)系統(tǒng)。該系統(tǒng)由兩部分組成：以C8051F320單片機(jī)為核心的數(shù)據(jù)采集裝置和以PC機(jī)為平臺(tái)的分析處理系統(tǒng)。硬件電路功耗低，由單片機(jī)自帶的USB接口將數(shù)據(jù)傳送給PC機(jī)。軟件平臺(tái)采用LabVIEW可視化虛擬儀器系統(tǒng)開(kāi)發(fā)平臺(tái)，將傳統(tǒng)儀器的功能模塊集成到計(jì)算機(jī)中，用戶(hù)可通過(guò)修改虛擬儀器的程序改變其功能。采用USB接口實(shí)時(shí)傳輸心電數(shù)據(jù)，并將數(shù)據(jù)采集模塊設(shè)計(jì)為計(jì)算機(jī)外設(shè)，使該系統(tǒng)高速快捷、小巧便攜。 Abstract: In this design，a low-cost ECG electrocardiogram monitoring system is introduced，which consists of two parts:data acquisition device based on C8051F320and PC terminal as the analysis and processing system.The system is low-power consumption，the data is transmitted to the PC terminal by USB interface of the C8051F320.By using the visible virtual instrument system developing platform LabVIEW，the traditional instruments function modules are integrated into the computer，so the user can modify virtual instrument software to change its function to meet their needs.Using USB in-terface to realize real-time ECG data transmission，in addition，ECG data acquisition module is designed as the computer peripheral，which makes the syetem high-speed and portable.
標(biāo)簽： C8051F320 心電監(jiān)護(hù) 系統(tǒng)設(shè)計(jì)
上傳時(shí)間： 2013-11-13
上傳用戶(hù)：zhangzhenyu
飛機(jī)電網(wǎng)故障時(shí)，機(jī)載電氣盒必須在延遲時(shí)間內(nèi)切斷電網(wǎng)，保護(hù)機(jī)載設(shè)備。采用AT89S52設(shè)計(jì)的電氣盒測(cè)試儀能夠測(cè)試電氣盒保護(hù)功能，測(cè)量延遲時(shí)間。實(shí)際應(yīng)用結(jié)果表明，該測(cè)試儀具有測(cè)量準(zhǔn)確、可靠性高、成本低等優(yōu)點(diǎn)。 Abstract: The helicopter-electrical-box must shut off the helicopter power，protect the equipments of the helicopter when the helicopter power is failed.The tester for the helicopter-electrical-box based on AT89S52is used for testing the protect-ing function and measuring the delay time.Application results show this tester has some advantages,such as accurate mea-surement,high dependability,economical cost etc.
上傳時(shí)間： 2014-12-27
上傳用戶(hù)：786334970
提出一種基于C8051F040的炮塔方位角測(cè)試系統(tǒng)的設(shè)計(jì)方案，給出測(cè)試系統(tǒng)的各個(gè)模塊軟硬件設(shè)計(jì)。炮塔方位角測(cè)試系統(tǒng)集數(shù)據(jù)采集，數(shù)據(jù)傳輸和數(shù)據(jù)顯示等功能于一體，實(shí)現(xiàn)了炮塔方位角裝置的離線(xiàn)檢測(cè)。系統(tǒng)軟件采用C51編寫(xiě)，對(duì)單片機(jī)進(jìn)行有效電源管理，保證了系統(tǒng)的穩(wěn)定性，可靠性。 Abstract: This paper puts forwards a design of artillery position system based on C8051F040，describes all modules hardware and software design of measurement system.The system has the function of information collection，transmission，and display.It can measure artillery position system in offline.The system software using C51can manage the power of single chip microcomputer，guarantee the stability，reliability.
標(biāo)簽： C8051F040 方位角 測(cè)試系統(tǒng)
上傳時(shí)間： 2014-12-27
上傳用戶(hù)：7891
介紹了一種TI公司最新推出的MSP430F247單片機(jī)，利用它自帶的I2C模塊驅(qū)動(dòng)I2C總線(xiàn)的溫度傳感器TMP275。TMP275是一款具有高精度、低功耗的新型溫度傳感器。由于TMP275具有可編程功能，纖小的封裝以及極大的溫度范圍，因而廣泛應(yīng)用于組建超小型溫度測(cè)量裝置。 Abstract: A new single chip microcomputer MSP430F247 which is released by TI is introduced.It can drive I2C interface digital temperature sensor TMP275 with I2C module.TMP275 is a new temperature sensor which has high accurate,low power. Because TMP275 has programmable function,small packages and wide temperature range,it is applied widely in very little temperature measurment equipment.
上傳時(shí)間： 2013-12-06
上傳用戶(hù)：asdfasdfd
在汽車(chē)發(fā)動(dòng)機(jī)起動(dòng)時(shí)，若發(fā)動(dòng)機(jī)起動(dòng)后起動(dòng)機(jī)不能及時(shí)斷電，將會(huì)燒毀起動(dòng)機(jī)或損壞飛輪齒環(huán)；若變速器不在空檔位置起動(dòng)，則起動(dòng)機(jī)的瞬間動(dòng)力將使汽車(chē)位移，還可能引起交通事故和人身安全。為此介紹一種利用NXP P89LPC901單片機(jī)控制的汽車(chē)起動(dòng)保護(hù)控制器，通過(guò)檢測(cè)汽車(chē)起動(dòng)開(kāi)關(guān)、變速箱檔位、發(fā)動(dòng)機(jī)轉(zhuǎn)速，實(shí)現(xiàn)對(duì)汽車(chē)發(fā)動(dòng)機(jī)起動(dòng)過(guò)程檢測(cè)和保護(hù)。起動(dòng)保護(hù)控制器在發(fā)動(dòng)機(jī)起動(dòng)過(guò)程中通過(guò)采用逐個(gè)關(guān)閉打開(kāi)負(fù)載系統(tǒng)，解決汽車(chē)發(fā)動(dòng)機(jī)過(guò)程中因起動(dòng)電流大而對(duì)汽車(chē)電源的沖擊影響,延長(zhǎng)了電瓶壽命。 Abstract: When the automotive engine is started, the engine start motor and flywheel gear may be damaged， even traffic accidents and personal safeties may be caused by wrong operation or other factors.In order to ensure the automotive engine can be started normally and safely,it is necessary that the protecting measures and methods are considered in the automotive electrical control system.This paper introduces a kind of the automotive engine starting protect controller based on NXP P89LPC901 MCU.The controller can protect the engine starting process by detecting the starter key switch,transmission stall and engine speed.Through the use of close and open load system,the controller can solve the impact on automotive power because of the high-current load in the process of the automobile engine starting, and extend battery life.
上傳時(shí)間： 2013-10-15
上傳用戶(hù)：mikesering
氣壓是氣象監(jiān)測(cè)中的一個(gè)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(shí)時(shí)鐘（RTC）64 KB鐵電存儲(chǔ)器。通過(guò)低功耗軟件設(shè)計(jì)方法以微安級(jí)整體平均功耗實(shí)現(xiàn)了氣壓數(shù)據(jù)的采集和存儲(chǔ)，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(shí)間： 2014-12-27
上傳用戶(hù)：drink！
MMC/SD卡以其優(yōu)越的性能，在單片機(jī)嵌入式設(shè)備中得到廣泛應(yīng)用。將MMC/SD卡作為外部掉電存儲(chǔ)介質(zhì)應(yīng)用于音頻信號(hào)發(fā)生器中，通過(guò)8051F330單片機(jī)上的SPI接口，實(shí)現(xiàn)單片機(jī)—MMC/SD卡的存儲(chǔ)擴(kuò)展，設(shè)計(jì)了此硬件平臺(tái)上的MMC/SD卡的單片機(jī)驅(qū)動(dòng)程序，并給出了相應(yīng)的程序代碼，滿(mǎn)足音頻信號(hào)發(fā)生器的大容量存儲(chǔ)要求。 Abstract: MMC/SD card is more and more widely used in the single chip embedded devices for their excellent performances.This article introduces the application of MMC/SD card as the external power down storage medium in audio signal generator. The extension technology especially for storage of single chip-MMC/SD card via SPI interfaces in 8051F330 single chip, including designs single chip drive program of MMC/SD card based on hardware platform,and also gives the key coding of the program. The implementation of big capacity storage is meaningful in audio signal generator.
標(biāo)簽： 8051F330 音頻信號(hào) 發(fā)生器
上傳時(shí)間： 2014-12-27
上傳用戶(hù)：黃華強(qiáng)
為了解決磁放大器性能測(cè)試過(guò)程中，需要對(duì)其供給不同數(shù)值恒定電流的問(wèn)題，設(shè)計(jì)了一種基于DAC7512和單片機(jī)的數(shù)控恒流源系統(tǒng)。該系統(tǒng)采用AT89C51作為主控器件，將計(jì)算機(jī)發(fā)送的電流控制字命令轉(zhuǎn)換為D/A轉(zhuǎn)換器控制字，通過(guò)模擬SPI通信接口，寫(xiě)D/A控制字到DAC7512，從而控制其輸出相應(yīng)數(shù)字電壓值，經(jīng)差動(dòng)縮放電路、電壓/電路變換電路和功率驅(qū)動(dòng)電路，最后輸出恒定電流。實(shí)驗(yàn)結(jié)果表明，恒流源輸出電流調(diào)節(jié)范圍為-45~+45 mA、精度為±0.1 mA，分辨率達(dá)0.024 4 mA，具有應(yīng)用靈活，外圍電路簡(jiǎn)單，可靠性高的特點(diǎn)。該數(shù)控直流恒流源也可為相關(guān)產(chǎn)品的測(cè)試系統(tǒng)研發(fā)提供參考。 Abstract: In order to solve the need to supply different values constant current for the magnetic amplifier in testing process， numerical control constant current source system was designed based on DAC7512 chip and microcontroller technology. The system used the AT89C51 as the main chip， which can convert the current control word from computer into to D/A control words. And the system wrote D/A control word into the DAC7512 chip to control the output voltage value by the SPI communication interface， which can output corresponding constant current figures by scaling circuit， the V/I converter and power drive circuit. Experimental results show that the current source output current adjustment range is -45~+45mA， accuracy is ± 0.1mA， and resolution ratio is 0.024 4mA
標(biāo)簽： 7512 DAC 數(shù)控直流 恒流源
上傳時(shí)間： 2014-12-27
上傳用戶(hù)：invtnewer
提出了一種基于C8051F320的列車(chē)安全巡檢儀的設(shè)計(jì)方案，詳細(xì)闡述了巡檢儀的各個(gè)模塊的硬、軟件設(shè)計(jì)。巡檢儀集信息采集、軸溫檢測(cè)、照明和記錄存儲(chǔ)等功能于一體，實(shí)現(xiàn)了對(duì)列車(chē)安全巡檢工作有效的監(jiān)督和科學(xué)管理。系統(tǒng)軟件采用C51編寫(xiě)，對(duì)單片機(jī)進(jìn)行有效的電源管理，保證了巡檢儀的穩(wěn)定性、可靠性和低功耗性。 Abstract: This paper puts forward a design of train safety inspection based on C8051F320,describes all modules hardware and software design of inspection instrument.The inspection instrument has the function of information collection, axle’s temperature detection, lighting and records storage.It can supervise and administer train safety inspection work effectively.The system software using C51 can manage the power of single chip microcomputer, and guarantee the stability, reliability and low power consumption of the inspection instrument.
標(biāo)簽： C8051F320 列車(chē) 儀的設(shè)計(jì) 巡檢
上傳時(shí)間： 2013-12-22
上傳用戶(hù)：落花無(wú)痕
基于CC1110單片機(jī)公交報(bào)站系統(tǒng)主要由CC1110單片機(jī)最小系統(tǒng)和WT588D語(yǔ)音模塊組成，提出了如何實(shí)現(xiàn)語(yǔ)音報(bào)站，通過(guò)無(wú)線(xiàn)通信SimpliciTI網(wǎng)絡(luò)協(xié)議實(shí)現(xiàn)公交站臺(tái)的自動(dòng)播報(bào)和OLCD液晶顯示公交運(yùn)行的各類(lèi)信息。結(jié)果表明，該公交報(bào)站系統(tǒng)報(bào)站準(zhǔn)確率99%，價(jià)格比同類(lèi)產(chǎn)品下降了300%以上，系統(tǒng)組成結(jié)構(gòu)簡(jiǎn)單，提高了系統(tǒng)的抗干擾性和穩(wěn)定性，也便于攜帶。 Abstract: The bus stop announcement system based on CC1110 MCU is composed of CC1110 MCU minimum system and WT588D voice module. How to achieve the voice announcing is put forward.The bus-stop will announce automatically and display on the OLCD by means of wireless communication SimpliciTI network protocol. As a result， the bus station stop announcement systems reported 99% accuracy rate， price of similar products declined by 300% or more， system of simple structure， improve the anti-jamming and stability of the power system， it is also portable.
標(biāo)簽： 1110 CC 單片機(jī) 公交報(bào)站
上傳時(shí)間： 2013-10-21
上傳用戶(hù)：baby25825
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