公开(公告)号：US5988348A

公开(公告)日：1999-11-23

申请号：US883780

申请日：1997-06-27

申请人： Doug Martin ,  Larry Cannon ,  Mark Waechter ,  Rodrigo Berho ,  Daniel Everhart ,  Robert Blumberg ,  Paul Leonard ,  Cheryl Germany ,  Dan Gerrity ,  Alan C. Phillips ,  Stuart K. Neubarth

发明人： Doug Martin ,  Larry Cannon ,  Mark Waechter ,  Rodrigo Berho ,  Daniel Everhart ,  Robert Blumberg ,  Paul Leonard ,  Cheryl Germany ,  Dan Gerrity ,  Alan C. Phillips ,  Stuart K. Neubarth

IPC分类号： G07D3/06 ,  G07D3/12 ,  G07D3/14 ,  G07D5/00 ,  G07D5/08 ,  G07D9/00 ,  G07D11/00 ,  G07F5/24

CPC分类号： G07D3/06 ,  G07D3/123 ,  G07D3/14 ,  G07D5/00 ,  G07D5/08 ,  G07D9/008 ,  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.

公开(公告)号：US6082519A

公开(公告)日：2000-07-04

申请号：US883776

申请日：1997-06-27

申请人： Doug Martin ,  Scott Scherer ,  Russell Borgmann

发明人： Doug Martin ,  Scott Scherer ,  Russell Borgmann

IPC分类号： G07D9/00 ,  G07D11/00 ,  G07F9/06

CPC分类号： G07D11/0009 ,  G07D9/00 ,  G07F9/06

摘要： A bin for use in a coin handling device for receiving coins through an opening in the bin is provided with a cover movable from an open position to a closed position. The cover is configured to couple with a key mounted in the coin handling device such that when the bin is inserted into the coin handling device, the key automatically unlocks and opens the cover. When the bin is withdrawn from the coin handling device, the opening is automatically covered and the cover is automatically locked in the closed position.

摘要翻译： 用于硬币处理装置的用于通过箱中的开口接收硬币的箱设置有可从打开位置移动到关闭位置的盖。 盖被配置成与安装在硬币处理装置中的钥匙耦合，使得当箱被插入到硬币处理装置中时，钥匙自动解锁并打开盖。 当垃圾箱从硬币处理装置中取出时，开口被自动覆盖，盖被自动锁定在关闭位置。

公开(公告)号：US06795265B2

公开(公告)日：2004-09-21

申请号：US09877675

申请日：2001-06-08

申请人： Terence J. Murphy ,  Keith W. Malang ,  Larry G. Hutsell ,  Doug Martin

发明人： Terence J. Murphy ,  Keith W. Malang ,  Larry G. Hutsell ,  Doug Martin

IPC分类号： G11B5596

CPC分类号： H01L41/042

摘要： A piezo actuator drive circuit (40) adapted to operate in both a charge mode and a voltage mode. A low frequency compensation loop (44) is formed from a piezo actuator output (OUT6XP) of a driver (42) to the input thereof. The resulting closed loop system produces charge mode operation within a bandpass that can be tuned for desired operation. Below the bandpass turn on frequency (Fh) the closed loop system restores the piezo output (OUT6XP) to a defined DC voltage and compensates for any wandering effects, such as DC current mismatches in the closed loop configuration, such that the piezo output is centered around the desired DC operating point. The circuit is further provided with a DC restore feature in combination with the feedback which allows for a low frequency DC coupled path and thus allows for the DC positioning of the piezo in the charge mode to be changed. The DC restoring amplifier is used to compensate for offsets in the amplifier chain. The DC restore amplifier ensures the overall circuit is balanced and that the charge mode operation is maintained. The circuit is particularly adapted to drive a varying number of multiple piezo actuators.

摘要翻译： 一种适于在充电模式和电压模式下操作的压电致动器驱动电路（40）。 低频补偿回路（44）由驱动器（42）的压电致动器输出（OUT6XP）到其输入端形成。 所产生的闭环系统在可以调谐到期望的操作的带通内产生充电模式操作。 在带通开启频率（Fh）之下，闭环系统将压电输出（OUT6XP）恢复到定义的直流电压，并补偿任何漂移效应，如闭环配置中的直流电流失配，使得压电输出居中 围绕期望的直流工作点。 该电路还具有与反馈相结合的DC恢复特征，其允许低频DC耦合路径，从而允许改变充电模式中的压电体的DC定位。 直流恢复放大器用于补偿放大器链中的偏移。 直流恢复放大器确保整个电路平衡，并保持充电模式操作。 该电路特别适于驱动不同数量的多个压电致动器。