A hardware/software environment for real-time data acquisition and control

被引：5
|
作者：
Veiga, AL [1 ]
Mayosky, MA [1 ]
Martínez, N [1 ]
机构：
[1] Natl Univ La Plata, RA-1900 La Plata, Argentina
来源：
IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2000年 / 47卷 / 02期
关键词：
D O I：
10.1109/23.846132
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A data acquisition framework based on a RT-Linux host and several embedded processors is presented. A Constant Velocity Mossbauer Spectrometer with controlled temperature sweep is shown as a real experimental application. The hardware platform consists of a standard personal computer (PC) supporting several dedicated custom boards. Each board has a microcontroller and additional hardware to interface with the experiment. A simple real-time kernel with a preemptive scheduling scheme was implemented for the microcontroller boards. Tasks are assigned to each stand-alone board during the initialization step. The PC runs the Linux operating system, with its real time extension RT-Linux [1]. The flow of data to and from the boards is implemented with real-time tasks through real-time FIFOs in an event-driven basis. The proposed structure dramatically simplifies the implementation of sophisticated user interfaces, using high level languages like Tcl/Tk or Java, for graphical and remote applications, without degrading real-time performance.
引用
收藏
页码：132 / 135
页数：4
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