Abstract: An eddy current probe based on a Halbach array coil includes a first coil, a second coil, a third coil, a fourth coil and a fifth coil arranged in a form of a Halbach array. One side with dense magnetic induction lines is used as a displacement measurement direction of the eddy current probe.

Abstract: Disclosed is an integrated acceleration, speed and vibration sensor. The sensor includes a housing, a base, a sensing and signal processing circuit, a current loop circuit, an anti-surge PTC and an aviation plug. The housing is mounted on the base. The sensing and signal processing circuit and the current loop circuit are used to fabricate a PCB circuit board, and then the PCB circuit board is mounted in the housing. A power supply and signal line is connected to the aviation plug. An M6 threaded hole is formed in a bottom of the housing of the sensor and is used to connect with an object to be detected. A power supply is negatively connected to one end of a varistor and the other end of the varistor is connected to the housing as the anti-surge PTC to play a protective role. The M6 threaded hole formed in the bottom of the housing of the sensor is used to connect with the object to be detected and improve the stability.

Abstract: Disclosed is an integrated acceleration, speed and vibration sensor. The sensor includes a housing, a base, a sensing and signal processing circuit, a current loop circuit, an anti-surge PTC and an aviation plug. The housing is mounted on the base. The sensing and signal processing circuit and the current loop circuit are used to fabricate a PCB circuit board, and then the PCB circuit board is mounted in the housing. A power supply and signal line is connected to the aviation plug. An M6 threaded hole is formed in a bottom of the housing of the sensor and is used to connect with an object to be detected. A power supply is negatively connected to one end of a varistor and the other end of the varistor is connected to the housing as the anti-surge PTC to play a protective role. The M6 threaded hole formed in the bottom of the housing of the sensor is used to connect with the object to be detected and improve the stability.

Abstract: The present disclosure provides an eddy current probe based on a Halbach array coil. The probe includes a first coil, a second coil, a third coil, a fourth coil, and a fifth coil; the first coil, the third coil, and the fifth coil are horizontally placed; the second coil and the fourth coil are vertically placed; a current is made to one end of the first coil to generate a magnetic field; a current is made to one end of the second coil to generate a magnetic field; a current is made to the other end of the third coil to generate a magnetic field; a current is made to different terminals of the fourth coil to generate a magnetic field; a current same as the current made to the first coil is made to the fifth coil to generate a magnetic field; and one side with dense magnetic induction lines is used as a displacement measurement direction of the eddy current probe.