In order to design a more efficient and more convenient temperature acquisition system, an approach combining USB data acquisition card with K type thermocouple temperature sensor is proposed under the circumstance of...In order to design a more efficient and more convenient temperature acquisition system, an approach combining USB data acquisition card with K type thermocouple temperature sensor is proposed under the circumstance of LabVIEW 2012 programming software. Firstly, the LabVIEW 2012 programming software is used to complete a temperature acquisition control program. Secondly, K type thermocouple temperature sensor is employed to transfer the temperature information. Thirdly, Then the USB data acquisition card can collect the voltage of K type thermocouple temperature sensor and convert it to a temperature scale. And, the simplification of experimental procedure can reduce the cost of development greatly. Finally, the experimental results illustrate that the range of measurement temperature is more wide and the temperature scale is more accurate.展开更多
研究了USB接口的数据采集系统的设计与实现。整个系统以EZ-USB控制器为核心,由EZ-USB经控制电路实现对模数转换的控制。数据缓冲器存满后,通知EZ-USB控制器,由主机取出采样数据,并实时显示波形。系统硬件主要采用以AN2131QC为核心的USB...研究了USB接口的数据采集系统的设计与实现。整个系统以EZ-USB控制器为核心,由EZ-USB经控制电路实现对模数转换的控制。数据缓冲器存满后,通知EZ-USB控制器,由主机取出采样数据,并实时显示波形。系统硬件主要采用以AN2131QC为核心的USB接口电路和以模数转换器AD1674为核心的USB设备功能单元电路,系统软件采用Ke il C51语言编写芯片固件程序、采用VC++语言编写USB设备驱动程序和W in32应用程序。实验表明,该系统用于音频等信号的数据采集,性能稳定,效果良好。展开更多
文摘In order to design a more efficient and more convenient temperature acquisition system, an approach combining USB data acquisition card with K type thermocouple temperature sensor is proposed under the circumstance of LabVIEW 2012 programming software. Firstly, the LabVIEW 2012 programming software is used to complete a temperature acquisition control program. Secondly, K type thermocouple temperature sensor is employed to transfer the temperature information. Thirdly, Then the USB data acquisition card can collect the voltage of K type thermocouple temperature sensor and convert it to a temperature scale. And, the simplification of experimental procedure can reduce the cost of development greatly. Finally, the experimental results illustrate that the range of measurement temperature is more wide and the temperature scale is more accurate.
文摘研究了USB接口的数据采集系统的设计与实现。整个系统以EZ-USB控制器为核心,由EZ-USB经控制电路实现对模数转换的控制。数据缓冲器存满后,通知EZ-USB控制器,由主机取出采样数据,并实时显示波形。系统硬件主要采用以AN2131QC为核心的USB接口电路和以模数转换器AD1674为核心的USB设备功能单元电路,系统软件采用Ke il C51语言编写芯片固件程序、采用VC++语言编写USB设备驱动程序和W in32应用程序。实验表明,该系统用于音频等信号的数据采集,性能稳定,效果良好。