Scheme introduction:
·The infrared induction system is used to sense whether there is harmful gas nearby. When the infrared induction system senses that there is harmful gas approaching, it sends a high level that lasts for a period of time.
·The microcontroller starts the voice chip by starting the interrupt, and the microcontroller communicates through the serial port.
·The harmful gas parameters extracted from the upper computer prompt the nearby human body, and determine whether the current environment is safe by comparing with the safety value. For the use of voice chip, the necessary text and digital information shall be recorded first. During playback, the real-time parameters shall be read out through the automatic addressing of the microcontroller. In order to facilitate system improvement or transplantation to other systems in the future, recording and playback circuits can be designed to record different contents through switching.
·The system design is friendly and convenient, and the information given to people is more direct.
Performance parameters:
Key device type: MCU
Model: ATMEGA165P-16MN
Description: harmful gas detection