為提高溫度測量效率，降低系統的成本，擴展傳輸距離，設計出一種新型溫度采集系統。單片機通過控制具有單總線方式的溫度傳感器DS18B20實現對溫度的測量，同時單片機通過控制具有單總線方式300～450MHz頻率范圍內的MAX7044與MAX7033無線發射與接收芯片實現溫度數據的無線傳輸。與傳統溫度采集系統相比，該系統利用單總線方式連接，采用無線傳輸方式實現遠距離通信，易于系統的集成與擴展。實驗結果表明，該系統結構簡單、方便移植，能夠同時實現多達上百點溫度的測量與500m范圍的傳輸。 Abstract: To improve the temperature measurement efficiency and reduce system cost,expansion of transmission distance,a new type of temperature acquisition system is designed.Microcontroller controlled temperature sensor DS18B20which has a single-bus achieves temperature measurement,while microcontroller by controlled the MAX7044and MAX7033chip with a single-bus and having300~450MHz radiofrequency to achieve the wireless transmission of temperature data.Compared with conventional temperature acquisition system,the system uses single-bus connected,and uses wireless transmission means to achieve long-distance communications,easy-to-system integration and expansion.The experimental results show that the system is simple,convenient transplantation,and can be implemented in as many as a hundred-point temperature measure-ment and the transmission range of500meters.
上傳時間： 2013-10-29
上傳用戶：515414293
介紹基于ISA總線與KH-9300的數據采集板卡的設置，詳細說明8254定時計數器及8259中斷控制器的結構特點、工作方式、控制字等，探討中斷類型、中斷處理程序、中斷矢量表及其填寫。重點講述使用TorboC編寫中斷服務程序的方法，應注意的主要問題及程序測試的結果。 Abstract: The settings of KH-9300 data acquisition board based on the ISA bus is introduced,the structural characteristics,working methods,control characters of the timing counter 8254 and interruptioncontroller 8259 are explained in detail.The interruption type,interrupt handling programs,interruption vector table and its filling also are discussed.Further,great emphasis is put on the method of interrupt service program compiled by Torbo C,the main issues that should be noted,and the results of program testing.
上傳時間： 2013-11-14
上傳用戶：qq527891923
介紹一種基于C8051F060單片機和NAND Flash的數據采集存儲系統，該系統可實現3路信號采樣，每路采樣率為5KS/s,通過異步串行通信接口實現數據傳輸。并詳細說明系統的軟件設計。 Abstract: An acquisition and storage system based on C8051F060and NAND Flash is designed in this paper.The system is used to sample three-channel of signal,5KSPS each channel,and can upload data to test bench through UART（Universal Asynchronous Receiver/Transmitter）.The software design is discussed in detail.
上傳時間： 2013-10-12
上傳用戶：Jesse_嘉偉
TLC1543是TI公司推出的采用SPI技術的模數轉換器。具有輸入通道多、高速、高分辨率、性價比高、易于和單片機接口等特點，在各種數據采集系統中有著廣闊的應用空間。51單片機、TLC1543加上很少的外圍器件即可構成一個高性價比的數據采集系統，同時TLC1543占用單片機I/O資源較少，使得單片機有足夠的I/O資源去完成如控制、顯示等功能。由AT89C52和TLC1543構成的三相單獨可調400Hz中頻電源的數據采集系統在實際運用中達到很好的效果。
上傳時間： 2013-11-17
上傳用戶：xg262122
氣壓是氣象監測中的一個重要參數，提出了一種氣壓數據采集模塊設計方案，該模塊采用數字氣壓傳感器MS5534B、MSP430單片機MSP430F2272和帶實時時鐘（RTC）64 KB鐵電存儲器。通過低功耗軟件設計方法以微安級整體平均功耗實現了氣壓數據的采集和存儲，適合電池供電的連續高精度氣壓采集應用。給出了模塊的軟硬件設計以及MS5534B的性能指標和使用經驗。 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.
上傳時間： 2014-12-27
上傳用戶：drink！
針對眾多低成本數據采集需求，采用帶有片上USB控制器和D/A轉換器的混合信號微處理器C8051F340，設計了一款可通過USB接口和LabVIEW圖形用戶界面實現與PC機聯機的數據采集器，同時借助系統的SD卡存儲獨立實現現場長時間采集數據。該數據采集器成本低，結構簡單，體積小，已成功用于工業現場。 Abstract: Aiming at the need of low cost data acquisition, a data acquisition device is designed based on C8051F340 which is a mixed-signal microcontroller and integrates USB controller and A/D controller on a chip.The data acquisition device which can combine with PC by USB interface and LabVIEW graphical user interface,can realize data acquisition. At the same time,it can be solely run a long time in virtue of SD card in field.The date aequisition device features low cost,simple structure and little sharp, and it has been used in industry field.
上傳時間： 2014-05-31
上傳用戶：1109003457
介紹一種基于單片機的多路溫度采集及監控系統，能夠測量6路溫度信號，具有計算機聯網功能，各測量點可以單獨監控和設置，可根據用戶的需求自動控制。測量溫度范圍為-10 ℃～200 ℃，控制方式采用模擬量調壓模式。該系統具有控制精度高、沖擊小等特點。 Abstract: A temperature collecting and surveillance-controlling system based on sing-chip microcomputer is introduced. It can measure 6 channel signal of the temperature,and it has a function of network connection.The temperature measure points can be monitored and located, it can be controlled automatic according to user’s demand.The temperature range is -10℃ to 200℃.The model of control is adjustable voltage with simulation. It features high precision and little impact.
上傳時間： 2013-10-23
上傳用戶：bjgaofei
介紹了CAN總線和P87C591單片機的特點，給出了基于P87C591單片機的信號采集節點的軟、硬件設計，指出了硬件電路設計中應注意的問題，在軟件設計中重點介紹了節點初始化、報文發送和報文接收等子程序。 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.
上傳時間： 2013-11-03
上傳用戶：BIBI
本文對激光掃描車身坐標測量系統的數據采集部分進行了深入研究，設計了基于“AVR+FIFO+CPLD”的數據采集及處理模塊；解決了當多路信號有數據同時傳輸時，如何將數據完整地寫入FIFO的問題，實現了數據的有效采集；編寫了完整的CPLD控制程序和AVR數據采集程序，為準確測量待測點的坐標提供了可靠的數據來源。
上傳時間： 2013-10-29
上傳用戶：asaqq
具有PCI總線等接口形式的采集卡雖然傳輸速率高，但安裝麻煩,易受PC機插槽數量、地址、中斷資源的限制。為了解決以上問題，設計了基于ISP1581的高速USB接口的多通道數據采集系統，介紹了系統硬件組成以及軟件程序的開發過程。經驗證，系統最高傳輸速率可達60 Mb/s。
上傳時間： 2013-10-31
上傳用戶：ANRAN
