The Design Of Indoor Environmental Monitoring System Based On The Single Chip Microcomputer

Now, with the improvement of living standards, People on the indoor comfortof the living environment have become increasingly demanding, Housing and livingroom is an important material conditions of life, people, family reunion sites,but with the extensive use of decoration materials and daily necessities of anincreasingly wide range of home environment breaches. Not only in indoortemperature and humidity, but also reflected the concentration of harmful gasesin the room size.In the interior, the formaldehyde concentration monitoring ofpeople’s attention，China Environmental Protection Association, the statisticsshow that， Each year due to illness or death of indoor environmental pollutionhas caused the proportion of the attention of the experts,Indoor pollution hasbecome a serious impact on the killer of one of the modern human health.Marketbut also on the indoor environment monitoring instruments, mainly for thehazardous gas detection, single function, and higher prices, according to marketresearch is needed household indoor temperature and humidity and indoor harmfulgas integrated detection system.1. The sensor technology and MCU control technology, to achieve the environmentaltemperature and humidity, gas concentration and the concentration offormaldehyde in the collection and reading.2. The use of LED display technology to complete the environmental temperature,humidity and display circuit design.3. Add a buzzer alarm modules, gas concentrations in excess of the limit setalarm.4. Light-emitting diode for temperature and humidity and gas concentration limitalarm alarm.5. The use of SCM optical coupler off the gas valve and start the ventilator.