High-low temperature magnetic field detection system

Abstract

The invention discloses a high-low temperature magnetic field detection system and relates to a device for detecting magnetic element magnetic field distribution characteristics under high-low temperature environments. The high-low temperature magnetic field detection system comprises a box, a measured workpiece and a Hall probe. The box is made of a nonmagnetic heat insulation material, the Hall probe is installed a heat insulation carrier capable of freely extending in and being drawn out of the box, an infrared temperature detecting instrument for measuring the temperature of the surface of the measured workpiece is arranged outside the box, a distance measuring device for measuring the distance between the Hall probe and the measured workpiece is further arranged on the outer portion of the box, and the measured workpiece performs refrigeration or heating through a liquid nitrogen inlet and a hot nitrogen inlet which are arranged on the box and are symmetrically distributed. The high-low temperature magnetic field detection system is quick in heating or refrigeration efficiency, small in power consumption and suitable for batch production, high-low temperature switching is performed in the box, a temperature fatigue test can be performed, and the high-low temperature magnetic field detection system is simple and convenient and reduces cost; the Hall probe enters the box during the measurement and is drawn out at once after the measurement is finished, and the damage to the Hall probe caused by high temperature is avoided.

Description

technical field [0001] The invention relates to a magnetic field detection device, in particular to a detection device for the magnetic field distribution characteristics of a magnetic element in a high and low temperature environment. Background technique [0002] The detection of magnetic pole distribution is very widely used in modern science. At present, the existing transmission magnetic field detection system on the market is generally composed of Hall probes and product clamping. However, the development of modern science and technology is changing with each passing day, and the requirements for materials and devices are getting higher and higher, and the testing of various characteristics of materials and devices is becoming more and more important. Therefore, the requirements for various testing instruments are also getting higher and higher. [0003] In the current production process, electric components often work in an environment higher than room temperature, so...

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Problems solved by technology

However, the high-temperature environment of the magnetic field detector is realized by setting a heating furnace wire inside the outer surface of the insulation material. The flowing coolant used in this way will increase the power consumption of the equipment, and the heating efficiency is low and the heating is slow. The surface temperature of the workpiece cannot reflect whether the workpiece is heated evenly

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