Design of High-Performance Vehicle Multi-Axis Optical Encoder Data Acquisition System Based on PC104 Bus

2013 ◽  
Vol 333-335 ◽  
pp. 428-431
Author(s):  
Hua Pei Wang ◽  
Dong Ji ◽  
Dong Chen
Keyword(s):  
Data Acquisition ◽  
High Performance ◽  
Data Acquisition System ◽  
Hardware Description Language ◽  
Acquisition System ◽  
Main Function ◽  
Description Language ◽  
Optical Encoder ◽  
System Module ◽  
Hardware Description

A high-performance vehicle multi-axis optical encoder data acquisition system based on PC104 bus is introduced. The paper puts emphases on the main function of the system module. VHDL hardware description language is used to design the modules, and ModelSim is introduced to implement logic and sequential simulation. An experiment is carried on in Altera EPF10K40 chip. Both the simulation and experimental results verify the correctness and validity of the method.

scholarly journals The Data Acquisition System of the Na62 Experiment at Cern

2019 ◽  
Vol 214 ◽  
pp. 01037
Author(s):  
Marco Boretto
Keyword(s):  
Data Acquisition ◽  
High Performance ◽  
Branching Ratio ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Trigger System ◽  
Level Trigger ◽  
Decay Products ◽  
Ethernet Network ◽  
Trigger Decision

The aim of the NA62 experiment is to study the extreme rare kaon decay K+ ? π+vv and to measure its branching ratio with a 10% accuracy. In order to do so, a very high intensity beam from the CERN SPS is used to produce charged kaons whose decay products are detected by many detectors installed along a 60 m decay region. The NA62 Data Acquisition system (DAQ) exploits a multi-level trigger system; following a Level0 (L0) trigger decision, 1 MHz data rate from about 60 sources is read by a PC-farm, the partial event is built and then passed through a series of Level1 (L1) algorithms to further reduce the trigger rate. Events passing this level are completed with the missing, larger, data sources (~400 sources) at the rate of 100 KHz. The DAQ is built around a high performance ethernet network interconnecting the detectors to a farm of 30 servers. After an overall description of the system design and the main implementation choices that allowed to reach the required performance and functionality, this paper describes the overall behaviour of the DAQ in the 2017 data taking period. It then concludes with an outlook of possible improvements and upgrades that may be applied to the system in the future.

scholarly journals Designing High-Performance Fuzzy Controllers Combining IP Cores and Soft Processors

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Oscar Montiel-Ross ◽  
Jorge Quiñones ◽  
Roberto Sepúlveda
Keyword(s):  
Parallel Programming ◽  
High Speed ◽  
High Performance ◽  
Hardware Description Language ◽  
System Response ◽  
Description Language ◽  
Tuning Method ◽  
Hardware Description ◽  
Ip Cores ◽  
Fuzzy Pd

This paper presents a methodology to integrate a fuzzy coprocessor described in VHDL (VHSIC Hardware Description Language) to a soft processor embedded into an FPGA, which increases the throughput of the whole system, since the controller uses parallelism at the circuitry level for high-speed-demanding applications, the rest of the application can be written in C/C++. We used the ARM 32-bit soft processor, which allows sequential and parallel programming. The FLC coprocessor incorporates a tuning method that allows to manipulate the system response. We show experimental results using a fuzzy PD+I controller as the embedded coprocessor.

scholarly journals Implementation of High Performance Microstepping Driver Using FPGA with the Aim of Realizing Accurate Control on a Linear Motion System

2013 ◽  
Vol 2013 ◽  
pp. 1-8
Author(s):  
Farid Alidoust Aghdam ◽  
Siamak Saeidi Haghi
Keyword(s):  
High Performance ◽  
Experimental Results ◽  
Hardware Description Language ◽  
Stepper Motor ◽  
Linear Motion ◽  
Description Language ◽  
Control Behavior ◽  
Motion System ◽  
Hardware Description ◽  
Hardware In Loop

This paper presents an FPGA-based microstepping driver which drives a linear motion system with a smooth and precise way. Proposed driver built on a Spartan3 FPGA (XC3S400 core) development board from Xilinx. Implementation of driver realized by an FPGA and using Verilog hardware description language in the Xilinx ISE environment. The driver’s control behavior can be adapted just by altering Verilog scripts. In addition, a linear motion system developed (with 4 mm movement per motor revolution) and coupled it to the stepper motor. The performance of the driver is tested by measuring the distance traveled on linear motion system. The experimental results verified using hardware-in-loop Matlab and Xilinx cosimulation method. This driver accomplishes a firm and accurate control and is responsive.

A Wireless Microbial Fuel Cell Voltage Data Acquisition System Based on MSP430F149

2011 ◽  
Vol 105-107 ◽  
pp. 1961-1965 ◽  
Author(s):  
Kai Liu ◽  
Zhi Wei Zhao ◽  
He Long Jiang
Keyword(s):  
Fuel Cell ◽  
Data Acquisition ◽  
Microbial Fuel Cell ◽  
Microbial Fuel Cells ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Time Interval ◽  
Main Function ◽  
Usb Interface ◽  
Gsm Network

A wireless data acquisition system based on MSP430F149 is developed for the measurement of microbial fuel cells’ voltage. The main function of this system is to convert the analog input voltage into digital output code, process the digital code, and transfer the data through the GSM network or the USB interface. The core of the data acquisition device is a 16-bit general purpose Texas Instruments ultralow-power microcontroller MSP430F149. As the voltage of a microbial fuel cell is very low, the A/D converter circuit is specifically designed for high precision and high accuracy. A real-time clock is used to achieve timing measurement and the time interval can be set to meet demands. The data collected is transferred through the GSM network. Besides, a Windows environment application developed with Visual C++ can be used to access the data stored in the flash memory through USB interface.

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