Circuit Design of Signal-collecting System for On-line Water Electrical Conductivity
- VernacularTitle:在线水质电导率信号采集系统的电路设计
- Author:
Haiyan WANG
;
Mengfu ZHU
;
Hongbo SU
;
Xiudong YOU
;
- Publication Type:Journal Article
- Keywords:
electrical conductivity;
water detection;
signal-collecting;
single chip
- From:
Chinese Medical Equipment Journal
2003;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective In order to eliminate the influences caused by temperature and electrode-polarization, a new circuit of measuring electrical conductivity of water is designed by AT89S52 single-chip. Methods The system adopts the bi-directional pulsed voltage as its exciting source and the DS18B20 sensor as temperature compensation circuit component. Results Three functions which include auto-control, signal-collecting and display are realized by using C51 high-level language to write the modularization program. The precision of system is improved by an auto-temperature compensation way to avoid the blindness of temperature coefficient. Conclusion The system has such advantages as high accuracy and simple operation. Through further fulfilling, it can accord with user applying.
