Abstract:

Environmental data acquisition system uses STC single chip microcomputer as control core to realize the accurate acquisition of greenhouse of light intensity and temperature and humidity data,and after treatment for display and remote transmission.Among them,the collection of light intensity data is through the photosensitive resistance voltage by A/D conversion,the collection of temperature and humidity data is through the integrated temperature and humidity sensor DHT90.The system is stable and the data is accurate and reliable.

Key words: single chip microcomputer;temperature and humidity sensor;nRF905