【摘要】 采用机电结合的方法,把传统的浮子测量方式与单片机技术相结合,实现高精度、低成本、数字化的测量。步进电机是一个没有累计误差、使用方便的执行部件。系统中用浮子上的霍尔传感器来确定液面的位置,并且在与液面垂直的方向上安置一系列的霍尔传感器作为基准。利用步进电机带动丝杆上的磁铁寻找到液面,然后再找到离液面最近的基准,计数步进电机所走的步数。磁铁沿丝杆移动的距离与步进电机所走的步数成线性关系,因此可以算出基准和液面之间的距离。根据基准和这个距离计算得到机车油箱内的油位。更多还原

【Abstract】 This paper uses the method of the mechanical and electrical union,unify the traditional float survey way and the MCU technology to realize high accuracy,low cost,digitization survey.Stepping motor is an actuator without cumulative error and it can be used easily.Hall sensors are used in the float to fix on the oil surface.Along the oil box,this paper sets series hall sensors which is fixed in the guide screw to be used as references,then the stepping motor catches the magnet to look for the oil surface,and then it looks for the reference which is the nearest with the surface.The MCU count the steps the stepping moved to calculate the distance between the surface and the reference.更多还原