A power management system and terahertz spectrometer

Abstract

The application provides a power management system and a terahertz spectrometer. The system comprises: a power filter circuit, comprising an anti-reverse connection sub-circuit and a Pi filter sub-circuit connected to each other, and the anti-reverse connection sub-circuit is used for connecting an adapter; a current acquisition circuit, comprising a current acquisition sub-circuit connected to the Pi filter sub-circuit and an analog-to-digital conversion sub-circuit connected to the current acquisition sub-circuit; a charging and discharging management circuit, comprising an anti-reverse connection protection sub-circuit, a charging control sub-circuit and a discharging control sub-circuit, the anti-reverse connection protection sub-circuit is connected to the Pi filter sub-circuit, and the anti-reverse connection protection sub-circuit is also used for connecting an external lithium battery; a power acquisition circuit connected to the charging and discharging management circuit; and a control circuit connected to the current acquisition circuit and the power acquisition circuit. The application effectively attenuates noise and ripple of a specific frequency, significantly reduces the interference of the device self-noise to the outside world, and improves the anti-interference degree of the internal circuit to the power noise.

Images