Open AccessProgrammable power supply design based on biological factor interference mechanism
Author(s) -
Zheng Yunhong,
Huang Xumin,
Rahman Tanzeel Ur
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.9205
Subject(s) - reuse , ultraviolet , environmental science , process engineering , computer science , power (physics) , ultraviolet light , waste management , materials science , engineering , optoelectronics , physics , quantum mechanics
Nowadays, how to deal with the water pollution has become a worldwide problem. More and more people are focusing on how to disinfect and reuse water resources. In daily life, people often use chlorine gas to disinfect, but chlorine gas disinfection has low efficiency and it will take a long time to be effective. It is also easy to form secondary pollution. Therefore, ultraviolet disinfection technology is more and more popular. At present, ultraviolet disinfection technology generally adopts fixed output frequency and voltage, and the effect is not good. This is because VBNC is a common state of water organisms, in which water organisms are in a special state of dormancy. When the external environment is restored properly, they can still recover their activity. Here, a programmable power supply based on DSP is designed to solve this problem. If the ultraviolet lamp is powered by this power supply, the output voltage and frequency can be variable. The system greatly improves the sterilisation efficiency, and the effective sterilisation can reach 99.99%.