The Research of Humidity Sensor Application in the Crop Growth Environmental Parameter Monitor
Abstract: This paper introduce a measuring humidity monitoring program design,16-bit single-chip SPCE061A microcomputer as the controller, capacitive humidity sensor HS1101 as measuring humidity program .The basic principle of the design is that the dielectric constant of the humidity capacitance changes when the humidity in environment changes, while it is also a change in capacitance . the capacitance change is directly proportional to the amount and relative humidity, so the humidity value ia calculated according to the value of the capacitance. The humidity monitoring device with voice playback function can use the keys to control the measure of the humidity and the value in real-time broadcast. Because of the advantage such as Prospective accuracy, rapid measurement speed, and easy interoperability, can be widely used in industrial and agricultural production, meteorological, and environmental protection sectors, and supply the convenince to people for producting and living.
Key words: SPCA061A; HS1101; Monitor; hardware system
