Open AccessCapacitance Measuring Instrument Based On Ldc1612
Author(s) -
Jian Huang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1852/4/042048
Subject(s) - buzzer , capacitance , microprocessor , oscillation (cell signaling) , capacitance probe , differential capacitance , electrical engineering , capacitor , controller (irrigation) , computer hardware , computer science , acoustics , engineering , electrode , physics , voltage , chemistry , agronomy , quantum mechanics , biology , alarm , biochemistry
A new type of capacitance measuring instrument includes a microprocessor, a capacitance sensing sensor, a LC oscillation circuit, a computer, a display and a buzzer. The LC oscillation circuit is connected with the measured capacitance CS to generate an oscillation frequency, and the oscillation frequency is sent to the capacitance sensing sensor. After being processed by the capacitance sensing sensor, it is converted into a 28 bit binary number and sent to the said controller through the IIC interface When a successful measurement is completed, the microprocessor controls the buzzer to sound once and sends the measurement results to the display or computer, which has the advantages of high precision, short measurement time, etc.