Humidity sensor chip

• Main Authors: CANG DINGYONG, YIN HAIHONG, WANG ZHILIANG, QU HUIWEN, SONG CHANGQING
• Format: Patent
• Language: Chinese; English
• Published: 21.04.2020
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a humidity sensor chip. The sensor chip comprises a humidity sensitive module, a measuring circuit module, an MCU and a storage module. Two different physical properties of thehumidity-sensitive material change along with the change of the moisture content of the humidity-sensitive material. The measuring circuit module measures two different physical properties of the humidity sensitive material at the same time, and transmits a measurement result to the MCU; a standard parameter library is stored in the storage module, and standard curves of two different physical properties of the humidity-sensitive material changing along with the change of the moisture content of the humidity-sensitive material are recorded in the standard parameter library; the MCU performs indexing, comparison and operation on the standard curves recorded in the standard parameter library according to results obtained through measurement to obtain an ambient air humidity reference valuea and an ambient air humid