The Study And Experiment Of The Magnetic Fluid Inclined Sensor

Magnetic fluid is a kind of colloid which contain ferromagnetic granule equably in liquid . Magnetic fluid is a relatively new functional material. It has some common quality which was well equable , superparamagnetism . Since found by NASA , it showed its greater power in many areas such as electric , machine , material, physics and chemist. But this is only its preliminary usage .Sensor , which is the first step to measure and auto-control, is widely used in many areas mainly to transfer non-electric signal to electric signal, in order to meet the need of the computer to process the signal.The combination of the magnetic fluid and the sensor is a new way of study . This kind of sensor can be used to measure the angle of the inclined plane and the acceleration . The study of magnetic fluid inclined sensor is only on its first step . On abroad , the relative study has started several years ago , but only seen in vehicle industry . In home , that research has not found through search . So , the new topic is all innovational work .The purpose of the work is to create a new kind of sensor that mainly function is to measure the angle of the inclined plane . Because of the use of new material, it has some new property which has clearly advantage compared to old sensors . That is obviously showed at the aspect of accuracy and anti-vibration . That excellent property meet the need of some special industry , such as automobile , vessel and military industry .The principle of the sensor likes the transformer , depending on electromagnetic induction . Its main frame is one test tube , four windings and magnetic fluid in test tube . The outer windings act as transformer's primary winding and inner windings do as the transformer' secondary winding . The magnetic fluid in test tube substitutes iron core which can be changed followed by the angle of the inclined plane ,which is linearity . This provide the possibility to measure the angle of the inclined plane .Found in experiment, the most important factor influencing the accuracy of the magnetic fluid inclined sensor is the relative position between the primary windings and secondary windings . Before every measuring , adjusting is necessary .Finally , because the experiment shows the ideal results , the work is successful.