Digital negative ion generator and control method thereof

Abstract

The invention discloses a digital negative ion generator, which comprises a power conversion circuit, a main controller, a voltage conversion circuit, a protection circuit and a negative high voltage feedback circuit, wherein the power conversion circuit is composed of an LC half-bridge resonant circuit, a piezoelectric ceramic transformer and a double voltage circuit connected in sequence; the protection circuit comprises an overcurrent protection circuit and an overheat protection circuit; the negative high voltage feedback circuit is composed of a bleeder circuit, a half wave rectification circuit and a voltage amplitude limiting circuit connected in sequence; the input end of the main controller is also connected with an A / D conversion circuit; the input end of the A / D conversion circuit is also connected with a specified voltage circuit; the output end of the main controller is connected with a driving circuit; and the LC half-bridge resonant circuit is connected with the output end of the driving circuit. The invention also discloses a digital negative ion generator control method. The design is novel and reasonable, work reliability is high, functions are complete, the fault rate is low, maintainability is high, practicability is high, and promotion and use are facilitated.

Description

technical field [0001] The invention belongs to the technical field of air purifiers, and in particular relates to a digital negative ion generator and a control method thereof. Background technique [0002] With the increasingly serious environmental pollution and the strengthening of people's environmental awareness, air quality has become the focus of attention all over the world. Especially recently, the PM values ​​announced by major cities across the country are all above 2.0, even exceeding 2.5, which will directly threaten our lives and health. [0003] As the indoor environment where people live, it is also affected by the quality of the atmospheric environment, not only that, but also directly affected by the specific indoor environment, but its pollution factors are becoming less and less obvious, and the situation is not optimistic. Indoor air pollution is mainly due to various reasons that cause indoor air harmful substances to exceed the standard, thus affecti...

AI Technical Summary

Problems solved by technology

At present, the common negative ion generators on the market are all constructed by analog devices. Although this kind of negative ion generator has the advantages of simple circuit and low price, it also has high failure rate and serious temperature drift. Leading to problems such as ionizer failure

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