Abstract: The present application provides a device for detecting a defect in a steel cord ply. The device is configured to obtain an enhanced magnetic field signal of the steel cord ply and detect a defect of the steel cord ply based on the enhanced magnetic field signal. The device includes a magnetic field unit including a permanent magnet configured to generate a background magnetic field; a signal obtaining unit configured to generate an enhanced magnetic field signal of a steel cord ply based on a plurality of first magnetic field signals and a plurality of second magnetic field signals; and a defect detecting unit configured to detect a defect of the steel cord ply based on the enhanced magnetic field signal, wherein the defect detecting unit includes an AD converting module, a signal processing module, a defect detecting module, a display module, and a control module.

Abstract: A magnetic image sensor is provided. The magnetic image sensor includes: a permanent magnet, arranged to generate a magnetic field; at least one magnetic induction chip, and each magnetic induction chip converts the magnetic field to at least one electrical signal; a signal processing chip, arranged to receive the at least one electrical signal of each magnetic induction chip and successively output the at least one electrical signal converted by each magnetic induction chip; a signal sampling hold circuit, arranged to perform signal sampling on electrical signals output by the signal processing chip, and perform signal hold on a electrical signal output by the signal processing chip every time before receiving the next electrical signal output by the signal processing chip; and an interface component, arranged to output the electrical signal output by the signal sampling hold circuit.

Abstract: A device and method for detecting a film thickness are provided. The device includes: a common electrode, a detection electrode, a common electrode voltage generating circuit, and a detection electrode signal processing circuit. A detection channel for a film to be detected is formed between a first common surface and a first detection surface. The common electrode voltage generating circuit is configured to generate a voltage on the common electrode, as to induce an effective signal voltage on the detection electrode. The detection electrode signal processing circuit includes: a reset voltage time sequence control circuit, a time sequence control circuit for transferring the effective signal voltage on the detection electrode and a differential amplifier.

Abstract: A magnetic image sensor is provided. The magnetic image sensor includes: a magnetic resistance (1), arranged along a scanning direction and configured to detect a changed magnetic signal in a range to be detected; a configuration resistance (2), connected with the magnetic resistance (1), wherein a resistance value of the configuration resistance (2) is adjustable; and a driving circuit (3), connected with the magnetic resistance (1) and configured to perform output control on the changed magnetic signal detected by the magnetic resistance (1) The problem of relatively stronger noise signal caused by a magnetic resistance deviation of a magnetic image sensor is solved.

Abstract: A magnetic image sensor is provided. The magnetic image sensor includes: a magnetic resistance (1), arranged along a scanning direction and configured to detect a changed magnetic signal in a range to be detected; a configuration resistance (2), connected with the magnetic resistance (1), wherein a resistance value of the configuration resistance (2) is adjustable; and a driving circuit (3), connected with the magnetic resistance (1) and configured to perform output control on the changed magnetic signal detected by the magnetic resistance (1) The problem of relatively stronger noise signal caused by a magnetic resistance deviation of a magnetic image sensor is solved.