公开(公告)号：US06196371B1

公开(公告)日：2001-03-06

申请号：US09105403

申请日：1998-06-26

申请人： Douglas Alan Martin ,  Mark Louis Waechter ,  Rodrigo Berho ,  John Partlow

发明人： Douglas Alan Martin ,  Mark Louis Waechter ,  Rodrigo Berho ,  John Partlow

IPC分类号： G07D508

CPC分类号： G07D9/008 ,  G07D3/06 ,  G07D3/14 ,  G07D5/08 ,  G07F5/24

摘要： A coin discrimination apparatus and method is provided. Coins, preferably after cleaning, e.g. using a trommel, are singulated by a coin pickup assembly configured to reduce jamming. A coin rail assists in providing separation between coins as they travel past a sensor. The sensor provides an oscillating electromagnetic field generated on a single sensing core. The oscillating electromagnetic field is composed of one or more frequency components. The electromagnetic field interacts with a coin, and these interactions are monitored and used to classify the coin according to its physical properties. All frequency components of the magnetic field are phase-locked to a common reference frequency. The phase relationships between the various frequencies are fixed, and the interaction of each frequency component with the coin can be accurately determined without the need for complicated electrical filters. In one embodiment, a sensor having a core, preferably ferrite, which is curved, such as in a U-shape or in the shape of a section of a torus, and defining a gap, is provided with a wire winding for excitation and/or detection. The sensor can be used for simultaneously obtaining data relating to two or more parameters of a coin or other object, such as size and conductivity of the object. Two or more frequencies can be used to sense core and/or cladding properties. Objects recognized as acceptable coins, using the sensor data, are diverted by a controllable deflecting door, to tubes for delivery to acceptable coin bins.

摘要翻译： 提供了一种硬币识别装置和方法。 硬币，优选清洁后，例如。 使用转筛，被配置成减少卡纸的硬币拾取组件分开。 硬币轨道有助于在硬币经过传感器时提供分离。 传感器提供在单个感测芯上产生的振荡电磁场。 振荡电磁场由一个或多个频率分量组成。 电磁场与硬币相互作用，这些相互作用被监测并用于根据其物理特性对硬币进行分类。 磁场的所有频率分量都锁相到公共参考频率。 各种频率之间的相位关系是固定的，并且可以精确地确定每个频率分量与硬币的相互作用，而不需要复杂的电过滤器。 在一个实施例中，具有弯曲的诸如U形或环形截面形状并且限定间隙的铁心的传感器优选为铁氧体，其具有用于激发和/ 或检测。 传感器可以用于同时获得与硬币或其他物体的两个或多个参数相关的数据，例如物体的尺寸和电导率。 可以使用两个或更多个频率来感测芯和/或包层属性。 使用传感器数据识别为可接受的硬币的物体被可控制的偏转门转移到用于传送到可接受的硬币箱的管道上。