The Design for Family Harmful Gas Detection Device

摘要

The paper introduces the design for domestic harmful gas detection device. By choose the corresponding sensor, and obtains the harmful gas information; the operation amplifier amplifies the signal. The MCU employees the ADC to get the digital information and read the alarm value set by the user, and decides whether into the alarm status or not. The alarm method includes the sound alarm, light alarm and telephone alarm. By the experiment, prove the design is stable and reliable.