磁强计

Magnetometer

磁强计是测量磁感应强度的仪器。根据小磁针在磁场作用下能产生偏转或振动的原理制成。而从电磁感应定律可以推出，对于给定的电阻R的闭合回路来说，只要测出流过此回路的电荷q，就可以知道此回路内磁通量的变化。这也就是磁强计的设计原理，用途之一是用来探测地磁场的变化。

Magnetometer is an instrument for measuring magnetic induction intensity. According to the principle that a small magnetic needle can deflect or vibrate under the action of a magnetic field. From the law of electromagnetic induction, it can be deduced that for a closed circuit with a given resistance R, the change of magnetic flux in the circuit can be known as long as the charge Q flowing through the circuit is measured. This is also the design principle of magnetometers. One of its uses is to detect changes in the geomagnetic field.

磁强计是用来测量磁感应强度的传感器,在工业、农业、交通运输、国防、航空航天、海洋、气象、医疗卫生等领域均有广泛应用。在地质勘探领域,它可用于地磁场变化监测和地质年代检测;在医疗卫生领域,它常被用来检测人体磁场并辅助疾病诊断;在国防上,它可以应用在磁性扫雷、炸弹探测、磁波通讯、磁探针和磁导航;在外层空间探测中,它被用来进行天体运行、演变的磁场检测;而在卫星姿态测控中,可通过磁强计测量空间磁场来提供卫星姿态信息

Magnetometers are sensors used to measure magnetic induction intensity. They are widely used in industry, agriculture, transportation, national defense, aerospace, ocean, meteorology, medical and health and other fields. In the field of geological exploration, it can be used for geomagnetic field change monitoring and geological age detection. In the field of medical and health care, it is often used to detect human magnetic field and assist in disease diagnosis. In national defense, it can be used in magnetic mine clearance, bomb detection, magnetic wave communication, magnetic probe and magnetic navigation. In outer space exploration, it is used to detect the magnetic field of celestial bodies' movement and evolution. In satellite attitude measurement and control, magnetometers can be used to measure the space magnetic field to provide satellite attitude information.