Magnetic field simulation system is an simulated and experimental platform to simulate earth magnetic field and various forms of magnetic fields based on Helmholtz Ring in the lab. The system generates certain uniform magnetic field space through Helmholtz Ring which provides an steady magnetic field environment for magnetic properties detection. Efficient Lab VIEW software based on G graphical programming language is utilized for software design. The efficient signal simulation, data acquisition, data storage, waveform display and the flexible programming of Lab VIEW provide convenience for the system implementation. In order to improve the resolution of the system and save hardware cost, two 16 -bits DA are used to achieve 24 -bits resolution, which can realize accurate simulation and reproduction of the magnetic field.%磁场模拟系统是基于赫姆霍兹原理,在实验室环境下,模拟地磁场和多种形式磁场的模拟实验平台；它由赫姆霍兹环产生一定的均匀磁场空间,为设备的磁特性检验提供稳定的磁场环境；系统采用基于图形化编程G语言的高效开发软件LabVIEW编写测控软件,LabVIEW高效的信号模拟、数据采集、数据存储、波形显示及灵活的编程方式为系统的实现提供了很多便利;为了提高分辨率,并且节省硬件设备成本,系统利用两路16位的DA实现了24位的精度,完成磁场的精确模拟和再现.
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