Double solenoid magnetic fluid magnetic field sensor and double solenoid magnetohydrodynamic current sensor

摘要

Problem to be solved: to provide a magnetic field sensor having a high dynamic range and having a wide dynamic range without having a magnetic hysteresis and having a wide dynamic range and having a high general purpose and a same current sensor.Solution: having a straight or curved rod shaped hollow magnetic fluid container 4 made of non-magnetic materialA double solenoid Coyle is arranged in a magnetic fluid container aligned with the axial direction of the magnetic fluid container.The inner surface of the magnetic fluid container and the outer surface of the double solenoid Coyle are fixed and fixed so that there is no clearance.There is a gap between the inner surface of Coyle outside the double solenoid Coyle and the outer surface of the inner CoyleExtraction lines of double solenoid Coyle are drawn out of the magnetic fluid container.The double solenoid Coyle placed in the magnetic fluid container fills the magnetic fluid into the magnetic fluid container to completely immerse itAn electric current including an AC component is generated in Coyle inside the double solenoid Coyle to generate an exciting magnetic flux.The electromotive force generated in the outside Coyle of the double solenoid Coyle is used as a detection signal.Diagram