Campus dormitory active noise reduction system with stable power supply

Abstract

The invention discloses a campus dormitory active noise reduction system with stable power supply, including a power supply, a voltage stabilizing circuit, a noise reduction switch circuit, a noise detection module and an active noise reduction module. The output end of the power supply is connected with the voltage stabilizing circuit, the output end of the voltage stabilizing circuit is connected with the power input end of the noise reduction switch circuit, and the power output end of the noise reduction switch circuit is connected with the active noise reduction module. The noise detection module includes a noise sensor, a reference voltage source and a voltage comparator. The noise sensor is set in a dormitory. The output end of the noise sensor is connected with the in-phase input end of the voltage comparator. The out-of-phase input end of the voltage comparator is connected with the reference voltage source. The output end of the voltage comparator is connected with the control input end of the noise reduction switch circuit. When the noise detected is too large, the noise reduction switch circuit can be switched on in time under control to reduce the noise actively. Moreover, the power supply is stable, and a continuous noise reduction effect is guaranteed.

Description

technical field [0001] The invention relates to indoor noise reduction, in particular to an active noise reduction system for campus dormitories with stable power supply. Background technique [0002] In recent years, with the continuous expansion of the scale of higher education in our country, the number of school enrollment has continued to increase, and the campus dormitories have also been continuously expanded to facilitate student accommodation; some schools have campuses built in relatively quiet suburbs, but due to the consideration of convenient transportation, they are still There are some schools where the campus is relatively noisy, and a living area will be formed around the school itself. Noise is unavoidable. In the campus dormitory, the noise may have a negative impact on the campus life of the students and make the students irritable. , anxiety and other bad emotions; especially during sleep, if affected by noise, it is very easy for students to wake up fro...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the continuous expansion of the scale of higher education in our country, the number of school enrollment has continued to increase, and the campus dormitories have also been continuously expanded to facilitate student accommodation; some schools have campuses built in relatively quiet suburbs, but due to the consideration of convenient transportation, they are still There are some schools where the campus is relatively noisy, and a living area will be formed around the school itself. Noise is unavoidable. In the campus dormitory, the noise may have a negative impact on the campus life of the students and make the students irritable. , anxiety and other bad emotions; especially during sleep, if they are affected by noise, it is very easy for students to wake up from sleep or sleepless nights, resulting in insufficient sleep and poor spirits, which is not conducive to students' normal learning

[0003] Therefore, for campus dormitories, noise reduction has become an urgent problem to be solved. Generally, noise reduction measures on campus are mainly passive noise reduction, such as soundproof doors and windows, soundproof glass, etc., and the noise reduction effect is not obvious , and using this kind of noise reduction method, it is often necessary to close the doors and windows, which is not conducive to air flow; therefore, it is necessary to provide an active noise reduction system to achieve noise reduction in campus dormitories, but the active noise reduction system often requires power supply, and the stability of the power supply Resilience is very important to ensure the noise reduction effect

Images