The existing magnetic detection in the process of financial currency identification can only detect the presence or absence of magnetic signals

and can not realize the detection of soft and hard magnetic properties of magnetic anti-counterfeiting materials. An electromagnetic sensor is proposed

which is used to test the magnetic anti-counterfeiting material of the new 100 yuan banknote. The magnetic field distribution characteristics of the electromagnetic sensor are studied by Maxwell electromagnetic simulation. Because of the different coercivity of soft and hard magnetic anti-counterfeiting materials

the output characteristic signals of magnetic leakage are obviously different

in which the soft magnetic region is the envelope curve of high frequency. According to the different characteristics of the output signal

the soft and hard magnetic properties of magnetic anti-counterfeiting materials can be identified

which can further improve the precision and reliability of anti-counterfeiting recognition.