| With the shortage of water resources and the increasing pollution,the requirements for water disinfection are getting higher and higher.Currently,chlorine disinfection is widely used in daily life,but in recent years,UV(ultraviolet)disinfection technology has gradually matured.VBNC(viable but non-culturable)refers to a special dormant state of microorganisms in a specific environment,which affects the efficiency of ultraviolet disinfection.In order to improve the efficiency of ultraviolet disinfection,this paper designs an ultraviolet radiation control system based on TMS320F28335 as the main controller,which realizes the variable irradiation intensity of the ultraviolet irradiation system,that is,the voltage and frequency of the ultraviolet irradiation system are variable.The related concepts of microbial and ultraviolet disinfection are described in this paper.The basic composition and working principle of TMS320F28335 are introduced.The construction of Buck chopper circuit and the corresponding driver circuit hardware design and software programming of each module function are also discussed.Experimentally verified that this system meets the requirements. |
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