磁传感器特性测试中标准磁场发生装置的设计

磁传感器作为传感器的重要组成部分,在航空航天、生物医学、材料科学等领域得到了广泛应用,但目前却缺乏对其特性进行全面测试的手段,特别是传感器的频率特性。针对这个难题,在分析了Helm-holtz空心圆柱线圈、电磁铁、永磁铁、通流导线等磁场发生装置的特性与优缺点后,设计出一种实用性较强的磁场发生装置,能够产生较宽频率、较宽幅度的标准磁场,通过对磁场发生装置多项参数的仿真计算,验证了设计的可行性,最后给出了磁场发生装置的系统实现框图。

Design of standard magnetic field generator applied to the characteristic test of magnetic sensor

As a key part of sensor family,the magneo-dependent sensor has been widely utilized in aeronautics and astronautics,biology and medicine,materials science,etc.But the comprehensive characteristics test method is still in progress since the lack of suitable magnetic field generator.The advantages and disadvantages of different generating method,such as the Helmholtz coil,electromagnet,permanent magnet and current conductor,are analyzed.A magnetic field generator with more wide frequency and amplitude is designed.Through corresponding simulation based on ANSYS,the feasibility of the design is verified.The system realizing block diagram of standard magnetic field generator is presented at last.