Paper Title:
Design of the A/D Conversion Circuit Based on ARM for the Time-Difference Method Ultrasonic Flowmeter
  Abstract

Because the high precision ultrasonic flowmeter has shortcomings of expensive, the A/D conversion circuit based on ARM for the time-difference method ultrasonic flowmeter is designed. On the basis of time-difference method ultrasonic flowmeter theory and the domestic and overseas advanced technology, a cost-effective low-power 12-bit ADC12DL040 chip and ARM processor LPC2138 are chosen for the design. According to the data acquisition system issues of the time- difference method ultrasonic flowmeter, the two-channel 12-bit low-power monolithic CMOS analog-digital conversion chip is adopted to design the nanosecond-level high-resolution data acquisition system. In this paper, the A/D chip peripheral pin circuit design is given, hardware structure diagram and software flowchart are also given. The input frequency of ultrasonic signal is 400 kHz and the sampling frequency is 8MHz.The experimental results indicated that the designed A/D conversion circuit is able to accomplish the high-speed and high-resolution ultrasonic echo signal sampling; the minimum resolution time of A/D conversion circuit is 0.305ns. The physical map of A/D conversion circuit for the time-difference method ultrasonic flowmeter is presented. The design of A/D conversion circuit for time-difference method ultrasonic flowmeter not only lower the production cost, but also lays a solid foundation for the research of low-cost and high-precision time-difference method ultrasonic flowmeter.

  Info
Periodical
Advanced Materials Research (Volumes 383-390)
Chapter
Chapter 1: Computer-Aided Manufacturing
Edited by
Wu Fan
Pages
516-523
DOI
10.4028/www.scientific.net/AMR.383-390.516
Citation
X. H. Zhang, H. Zhang, X. H. Chen, X. Q. Wang, J. Q. Feng, "Design of the A/D Conversion Circuit Based on ARM for the Time-Difference Method Ultrasonic Flowmeter", Advanced Materials Research, Vols. 383-390, pp. 516-523, 2012
Online since
November 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Sergey Y. Yurish
Abstract:This paper presents an advanced analog-to-digital conversion technique based on a voltage-to-frequency-to-digital conversion that is...
623
Authors: Guang Zhen Cheng, Hong Fei Lin, Ying Jun Dai
Chapter 4: Ceramic
Abstract:This document introduce commonly used to control the centrifugal water pump flow, The valve export opens degree, control pump turning speed ,...
1011
Authors: Shou Jun Wang, Qi Qiang Liu
Chapter 12: Transmission and Control of Fluid
Abstract:The test platform of wave energy hydraulic conversion system is built up in the laboratory, which used to analyze the factors affecting the...
1711
Authors: Jun Yong Lu, Fang Ming Tu, Xiao Zhang
Chapter 6: Computer Science, Networks, Communication, Software, Information Security and Technologies
Abstract:In this paper, a special communication conversion system from parallel to serial is implemented by FPGA (Field Programable Gate Array). The...
1132