Real-time adjusting and optimizing system for working point of giant magneto-impedance sensor and giant magneto-impedance sensor

• Main Authors: TANG JINGSHENG, XU MING, LIU YADONG, HU DEWEN, ZHOU ZONGTAN, HAN CHANGLIN
• Format: Patent
• Language: Chinese; English
• Published: 24.03.2020
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a real-time adjusting and optimizing system for a working point of a giant magneto-impedance sensor. The system comprises a control unit, an excitation signal unit and a bias coil driving unit, the control unit is used for controlling the excitation signal unit to generate an excitation signal with adjustable frequency and amplitude, and the control unit is used for controlling the bias coil driving unit to generate a driving signal with an adjustable amplitude. The invention further discloses an adjusting and optimizing method. The adjusting and optimizing method comprises the following steps of S01, generating the excitation signal of which the frequency and the amplitude change according to a rule; or/and generating the driving signal of which the amplitude changes according to a rule; and S02, when the change rate of a response signal is reduced no matter whether the excitation signal or/and the driving signal is up-adjusted or down-adjusted, taking the excitation signal or/and the