Disclosed is an NFC-based Bluetooth earphone sensing an electroencephalographic β wave signal. An earphone body comprises a brainwave sensor, a filter and amplification unit, an analog-to-digital converter, and a brainwave collection and processing chip that are connected in sequence and distributed in a brain's frontal area. The filter and amplification unit comprises a first amplifier, a wave trap, a low-pass filter, a band-pass filter, and a second amplifier that are connected in sequence and have high-impedance differential inputs. The earphone body is a Bluetooth earphone. A headphone body comprises a left ear hook, a head mounting piece, and a right ear hook that are fixedly connected in sequence. The earphone body further comprises an NFC module. The NFC module is connected to a Bluetooth module through a Bluetooth control circuit configured to control the Bluetooth module to implement automatic pairing and communication. The NFC module is further connected to a target terminal through an NFC transceiver antenna. The present invention enables a user to directly perform a matching operation through NFC, controls a target terminal to perform a corresponding action by using a brainwave, and is convenient to manipulate.
NFC-BASED BLUETOOTH EARPHONE SENSING ELECTROENCEPHALOGRAPHIC Β WAVE SIGNAL