Coin electromagnetic parameter on-line detection module with magnetism detection function

• Main Authors: LIN CHUANMEI, GU XIAOJIAN, YANG JUNPING, YAN LIEYING, YANG PENG, LU FEIBING, TAO DONGXU, LI XIE
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model relates to a coin electromagnetic parameter on-line detection module with magnetism detection, which comprises a control circuit board and a sensor with magnetism detection, the sensor is connected with the control circuit board through a connecting line, and the control circuit board is in communication connection with an upper computer. The control circuit board comprises a signal generator, a first amplification filter circuit, a second amplification filter circuit, a frequency mixing circuit, a differential amplification circuit and a phase sensitive detection circuit, the sensor comprises an upper sensor and a lower sensor, rectangular coils are respectively arranged in the upper sensor and the lower sensor, and a Hall device is arranged in the lower sensor. The coin detection module has the advantages of solving the problems of low accuracy and single function of the existing coin detection module, being capable of realizing the detection of complex coins, and having the characteristic