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1. 发明授权

US5969340A Seed counting apparatus for a planter monitor 失效
标题翻译：播种机监视器种子计数装置
公开(公告)号：US5969340A
公开(公告)日：1999-10-19
申请号：US907495
申请日：1997-08-08
申请人： Rasvan N. Dragne , James F. White , Nikolai Tevs
发明人： Rasvan N. Dragne , James F. White , Nikolai Tevs
IPC分类号： A01C7/08 , A01C7/10 , G06M1/10 , G06M1/272 , G06M11/00 , H01J40/14
CPC分类号： A01C7/105 , G06M1/101 , G06M11/00
摘要： A seed counter for counting seeds flowing through a duct includes a light transmitter on one side of the duct and light receiver on the opposed side of the duct together with an electronic circuit effecting analysis of the signals received by the receiver to generate a seed count value which represents accurately as possible the number of seeds passing through the duct. The transmitter and receiver each comprise a channel-shaped body with diodes at a base of the channel with the channel filled with a translucent potting material facing into the duct. The circuit receives the signals which include for each passage of a seed or a clump of seeds a temporary reduction in light intensity which is converted to a reduction in voltage. Prior to start up the steady state voltage is measured and the current to the transmitter varied to provide a predetermined level of signal at the receiver. The circuit includes a DC compression circuit and a AC compression circuit at an amplifier so as to provide an output signal in a required amplitude range. An autobiasing section maintains a steady state signal at a required level. The amplitude of the signal is compared to a threshold by generating a first signal which is offset by the threshold and a second signal which is delayed by a predetermined time period, the comparison generating a square wave output when one of the signals crosses the other signal. The seed counter is used in a monitoring system having a central monitor which can be operated to vary the parameters of the comparison circuit including the time delay. The use of the comparison circuit assists in determining the difference between a single seed and a clump of seeds passing the transmitter/receiver simultaneously.
摘要翻译：用于计数流过管道的种子的种子计数器包括在管道的一侧上的光发射器和在管道的相对侧上的光接收器以及电子电路，其实现由接收器接收的信号的分析以产生种子计数值其尽可能准确地代表穿过管道的种子的数量。发射器和接收器各自包括在通道的基部处具有二极管的通道形体，其中通道填充有面向管道的半透明灌封材料。该电路接收包括种子或种子簇的每次通过的信号，其中光强度的临时降低被转换为电压的降低。在启动之前，测量稳态电压并且到发射机的电流变化以在接收器处提供预定水平的信号。该电路在放大器中包括DC压缩电路和AC压缩电路，以便提供所需幅度范围内的输出信号。自动偏置部分将稳态信号保持在所需的水平。通过产生被阈值偏移的第一信号和延迟预定时间段的第二信号将信号的幅度与阈值进行比较，该比较当其中一个信号与另一信号相交时产生方波输出。种子计数器用于具有中央监视器的监视系统，其可以被操作以改变包括时间延迟的比较电路的参数。比较电路的使用有助于确定单个种子和同时通过发射机/接收机的种子团簇之间的差异。

2. 发明授权

US5883383A Seed counting apparatus for a planter monitor 失效
标题翻译：播种机监视器种子计数装置
公开(公告)号：US5883383A
公开(公告)日：1999-03-16
申请号：US532524
申请日：1995-09-22
申请人： Rasvan N. Dragne
发明人： Rasvan N. Dragne
IPC分类号： A01C7/10 , G06M1/10 , G06M11/00 , G01V8/20 , G06M7/00
CPC分类号： G06M11/00 , A01C7/105 , G06M1/101
摘要： A seed counter for counting seeds flowing through a duct includes a light transmitter on one side of the duct and light receiver on the opposed side of the duct together with an electronic circuit effecting analysis of the signals received by the receiver to generate a seed count value which represents accurately as possible the number of seeds passing through the duct. The transmitter and receiver each comprise a channel-shaped body with diodes at a base of the channel with the channel filled with a translucent potting material facing into the duct. The circuit receives the signals which include for each passage of a seed or a clump of seeds a temporary reduction in light intensity which is converted to a reduction in voltage. Prior to start up the steady state voltage is measured and the current to the transmitter varied to provide a predetermined level of signal at the receiver. The circuit includes a DC compression circuit and a AC compression circuit at an amplifier so as to provide an output signal in a required amplitude range. An auto-biasing section maintains a steady state signal at a required level. The amplitude of the signal is compared to a threshold by generating a first signal which is offset by the threshold and a second signal which is delayed by a predetermined time period, the comparison generating a square wave output when one of the signals crosses the other signal. The seed counter is used in a monitoring system having a central monitor which can be operated to vary the parameters of the comparison circuit including the time delay. The use of the comparison circuit assists in determining the difference between a single seed and a clump of seeds passing the transmitter/receiver simultaneously.
摘要翻译：用于计数流过管道的种子的种子计数器包括在管道的一侧上的光发射器和在管道的相对侧上的光接收器以及电子电路，其实现由接收器接收的信号的分析以产生种子计数值其尽可能准确地代表穿过管道的种子的数量。发射器和接收器各自包括在通道的基部处具有二极管的通道形体，其中通道填充有面向管道的半透明灌封材料。该电路接收包括种子或种子簇的每次通过的信号，其中光强度的临时降低被转换为电压的降低。在启动之前，测量稳态电压并且到发射机的电流变化以在接收器处提供预定水平的信号。该电路在放大器中包括DC压缩电路和AC压缩电路，以便提供所需幅度范围内的输出信号。自动偏置部分将稳态信号保持在所需的水平。通过产生被阈值偏移的第一信号和延迟预定时间段的第二信号将信号的幅度与阈值进行比较，该比较当其中一个信号与另一信号相交时产生方波输出。种子计数器用于具有中央监视器的监视系统，其可以被操作以改变包括时间延迟的比较电路的参数。比较电路的使用有助于确定单个种子和同时通过发射机/接收机的种子团簇之间的差异。

3. 发明授权

US06661514B1 Tube blockage monitor 有权
标题翻译：管阻塞监视器
公开(公告)号：US06661514B1
公开(公告)日：2003-12-09
申请号：US09505839
申请日：2000-02-17
申请人： Nikolai R. Tevs , Edwin M. Bethune , Rasvan N. Dragne
发明人： Nikolai R. Tevs , Edwin M. Bethune , Rasvan N. Dragne
IPC分类号： G01N2147
CPC分类号： G01F23/2921 , A01C7/105 , G01N2015/1418 , G01P13/008
摘要： A blockage monitor for detecting a blockage in flow of particles includes a sensor body for mounting on a wall of the seed duct and defining a front face flush with the duct surface carrying both an LED light source for projecting light into the interior of the duct and a phototransistor arranged to produce an output signal proportional to the intensity of reflected light received which increases as a seed passes. A separate blockage module counts the output and uses an algorithm for comparing the count with a calibration count to determine whether there is a blockage of the duct. A power voltage is supplied to each sensor using two wires. A test of the sensor includes a pulse in the power voltage so as to generate a corresponding but delayed pulse in the light from the light source.
摘要翻译：用于检测颗粒流动阻塞的堵塞监测器包括：传感器体，用于安装在种子管道的壁上，并且限定一个前表面与管道表面齐平，管道表面同时携带用于将光投射到管道内部的LED光源; 光电晶体管被布置成产生与随着种子通过而增加的反射光的强度成比例的输出信号。单独的阻塞模块对输出进行计数，并使用算法将计数与校准计数进行比较，以确定管道是否有堵塞。使用两根电线将电源电压提供给每个传感器。传感器的测试包括电源电压中的脉冲，以便在来自光源的光中产生相应但延迟的脉冲。

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