經過了那麼一段『量測講古』後，再回到『溼度感測器』的結構、原理、應用等等時，不知是否會有新的曙光︰
HTS221 Capacitive digital sensor for relative humidity and temperature
Features
0 to 100% relative humidity range
Supply voltage: 1.7 to 3.6 V
Low power consumption: 2 μA @ 1 Hz ODR
Selectable ODR from 1 Hz to 12.5 Hz
High rH sensitivity: 0.004% rH/LSB
Humidity accuracy: ± 4.5% rH, 20 to +80% rH
Temperature accuracy: ± 0.5 °C,15 to +40 °C
Embedded 16-bit ADC
16-bit humidity and temperature output data
SPI and I2C interfaces
Factory calibrated
Tiny 2 x 2 x 0.9 mm package
ECOPACK® compliant
Applications
Air conditioning, heating and ventilation
Air humidifiers
Refrigerators
Wearable devices
Smart home automation
Industrial automation
Respiratory equipments
Asset and goods tracking
Description
The HTS221 is an ultra compact sensor for
relative humidity and temperature. It includes a
sensing element and a mixed signal ASIC to
provide the measurement information through
digital serial interfaces.
The sensing element consists of a polymer
dielectric planar capacitor structure capable of
detecting relative humidity variations and is
manufactured using a dedicated ST process.
The HTS221 is available in a small top-holed cap
land grid array (HLGA) package guaranteed to
operate over a temperature range from -40 °C to
+120 °C.
【溼度感測器結構】
【溼度感測器工作原理】
─── 摘自
《 DESIGN OF MEMS BASED HIGH SENSITIVITY AND FASTRESPONSE CAPACITIVE HUMIDITY SENSOR 》
Mr.R.KARTHICK,
Dr.S.P.K.BABU,
Ms.AR.ABIRAMI,
Ms.S.KALAINILA.
Periyar Maniammai Institute of Science & Technology (PMIST)
讓我們得以進入『物理實驗』的殿堂，展開『數據』『分析』與『處理』之旅耶！終將通熟各類『感測器』 Sensors 的『應用』之『實務』乎！！