文献类型：会议论文

英文题名：The chip design of Resistance type humidity readout circuit which include the temperature compensation function for greenhouse application

作者：Fen, WenJie[1];Li, JinPing[1];Yin, TongTong[1];Chung, WenYaw[2]

第一作者：Fen, WenJie

通讯作者：Fen, WJ[1]

机构：[1]Beijing Union Univ, Sch Informat, Beijing 100101, Peoples R China;[2]Chung Yuan Christian Univ, Dept Elect Engn, Taoyuan, Taiwan

第一机构：北京联合大学智慧城市学院

通讯机构：[1]corresponding author), Beijing Union Univ, Sch Informat, Beijing 100101, Peoples R China.|[1141734]北京联合大学智慧城市学院;[11417]北京联合大学;

会议论文集：International Conference on Mechatronics and Industrial Informatics (ICMII 2013)

会议日期：MAR 13-14, 2013

会议地点：Guangzhou, PEOPLES R CHINA

语种：英文

外文关键词：Humidity readout circuit; Temperature compensation circuit; Low voltage dropout generator (LDO); Analog to digital convertor (ADC)

摘要：This paper presents the chip design strategy of resistance type humidity readout circuit for greenhouse application. The designed chip includes resistance change type humidity readout circuit, temperature compensation circuit, low voltage dropout generator (LDO), and analog to digital convertor (ADC). The humidity sensor which used in this research is HCZ_H8, and it is produced by Ghitron Company. Because resistance change type humidity sensor depends much on the temperature, so this paper develops a temperature sensing circuit to compensate the effects caused by the temperature change. The ADC in this research is 13-bit fully-differential incremental delta sigma A/D converter, and the power supply is 3.3v, but the power supply of the humidity readout circuit is 5v, so a low voltage dropout generator (LDO) is included to match the power supply.