Design and Application of Multi-point Water Temperature Measurement and Control System for Thermal Discharge Model

It is introduced in this paper that a system of multi-point temperature measurement and control has been designed in advanced technology of computer and industrial control area for thermal discharge model test. Digital temperature sensors in “1-wire bus”, digital circuit modules, standardized products XFC components and functional circuit module are applied in hardware of the system. Object-oriented approach is adopted in software designing and programming. C⁺⁺6.0 and AutoCAD are used in measurement procedures and data processing for easily operation and real time measurement. From a number of applications on model test study for water environment near power plants in the Yangtze River, it is shown that the measurement is satisfactorily precise and reliable, meeting the requirements of design and test. The practical system in advanced technology and related equipment can be used in any place where water temperature monitoring is possible and necessary, such as rivers, lakes, reservoirs, canals or swamp water environments.