On-line monitoring capacitive sensor

• Main Authors: WU ZHIYING, SHAO NUAN, TAO RAN, ZHAO SHAOWEN, ZHAO YUANJIE, HUANG MINJIE, ZHAO JIAXIN
• Format: Patent
• Language: Chinese; English
• Published: 19.06.2020
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides an on-line monitoring capacitive sensor. The sensor comprises a capacitor, a capacitor dielectric core, a pollutant injection mechanism, a charging and discharging oscillation circuit, a high-frequency pulse reading unit and a CPU processing unit. Two parallel polar plates of the capacitor are connected to the charging and discharging oscillation circuit; the charging and discharging oscillation circuit can charge and discharge the two parallel polar plates of the capacitor to obtain a high-frequency pulse signal, the high-frequency pulse signal is sent to the high-frequency pulse reading unit through the output end of the charging and discharging oscillation circuit, and the high-frequency pulse reading unit sends the read pulse signal to the CPU processing unit. Physical quantities are converted into high-frequency pulse signals, the physical quantities are monitored by monitoring the numerical values of the high-frequency pulse signals, and different monitoredenvironmental pollution