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1.发明授权
公开(公告)号：EP0598630B1
公开(公告)日：1997-03-26
申请号：EP93309256.1
申请日：1993-11-19
发明人： Blau, David
CPC分类号： G08B13/183 , F16P3/144 , G01V8/20
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2.发明公开
公开(公告)号：EP0598630A1
公开(公告)日：1994-05-25
申请号：EP93309256.1
申请日：1993-11-19
发明人： Blau, David
CPC分类号： G08B13/183 , F16P3/144 , G01V8/20
摘要： A light curtain system (10) includes a control circuit (13) having visible light indicators positioned adjacent channels (18) of individual light beams established across a guard zone. The light beams are transmitted along a plurality of parallel channels between a transmitter bar (11) and receiver bar (12). The control circuit operates to sense when one or more beams are blocked by the intrusion of an opaque object. The circuit responds by operating visible light LEDs (72) which are positioned adjacent the channels of the blocked beams. The visible light provides continuous feedback to the machine operator as to the condition of the guard zone. The visible light indicators are also used to facilitate alignment of the transmitter and receiver bars.
摘要翻译： 光幕系统（10）包括具有跨越保护区建立单独的光束的定位在相邻通道（18）可见光指示器的控制电路（13）。 的光束是沿发射机杆（11）和接收器杆（12）之间的平行信道与多个反式mitted。 控制电路进行操作，以感测当一个或多个光束由不透明物体的侵入被阻止。 该电路通过操作可见光LED，用来定位在相邻封端的光束的通道（72）作出响应。 可见光提供为保护区的条件不断反馈给机器操作员。 因此，可见光指标用来促进发射器和接收器杆的对准。
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3.发明授权Method and system for controlling angular accuracy in optical sensing arrays 失效的方法和装置的光学传感器布置的角度偏差的控制
公开(公告)号：EP0658718B1
公开(公告)日：1999-06-30
申请号：EP94309241.1
申请日：1994-12-12
发明人： Blau, David
CPC分类号： G01V8/20
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公开(公告)号：EP0562726A1
公开(公告)日：1993-09-29
申请号：EP93301516.6
申请日：1993-02-26
IPC分类号： F16P3/14 , G08B13/183
CPC分类号： G01V8/20
摘要： A light curtain system (70) for sensing the intrusion of objects into detection planes which define a protected zone. A plurality of light curtain segments (72,74) are provided with each segment including spaced-apart transmitter (76,78) and receiver heads (80,82). The transmitter and receiver heads are each connected in series by flexible cables which form a part of a control circuit. The series-connected segments permit the detection planes to be aligned in predetermined angular orientations as required by the particular application.
摘要翻译： 一种光幕系统（70），用于感测物体侵入到限定保护区域的检测平面中。 多个光幕段（72,74）设置有每个段，包括间隔开的发射器（76,78）和接收器头（80,82）。 发射器和接收器头各自通过形成控制电路的一部分的柔性电缆串联连接。 串联连接的部分允许检测平面按照特定应用的要求以预定的角度取向对准。
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公开(公告)号：EP1397699B1
公开(公告)日：2013-10-09
申请号：EP01987017.9
申请日：2001-11-20
发明人： DRINKARD, John, J. , OLTMAN, Ed , KNODE, Galen
CPC分类号： G01R13/345 , G01R31/2882 , G01R31/3016
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公开(公告)号：EP1419340A1
公开(公告)日：2004-05-19
申请号：EP02759303.7
申请日：2002-08-12
发明人： DRINKARD, John
IPC分类号： F16P3/14
CPC分类号： G08B13/193
摘要： A presence sensing system (10)provides one or more visible indicators (14)useful for indicating a relative location of objects sensed within the scanning field of view. For example, the system may have an indicator array (12)or an integrated display assembly in which individual indicators (14)or indicator postions correspond to defined portions of the system's field of view. In this manner, the presence sensing system can indicate where one or more sensed objects lie within its field of view. The system may monitor or otherwise scan an angular field of view and may have an indicator array comprising a plurality of individual indicators, each one corresponding to a portion of the monitored area. With this configuration, the system selectively illuminates or otherwise activates those indicators in the array corresponding to the relative angles of detected objects within its field of view.
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公开(公告)号：EP1161694A1
公开(公告)日：2001-12-12
申请号：EP00912213.6
申请日：2000-03-10
IPC分类号： G01V8/20
CPC分类号： G01V8/20
摘要： A modular articulated light curtain is formed by combining straight, curved, or angled modules (280, 280', 280'') with straight or angled couplers (330, 280'''). The modules include an array of pitched light emitters (230) or light detectors (250), and have rounded distal ends that mate, mechanically and electrically, with each other or with a coupler. Interconnection of adjacent modules is such that a constant pitch of light emitters or detectors is maintained. The light curtain comprises an assembly of interconnected light emitting modules spaced apart from interconnected light detecting modules. One end of each assembly is terminated, while the other end has a cable end module that may include at least one light emitter or detector, and may include a visual indicator, and provides input/output electrical interface to the light curtain.
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8.发明公开Method and system for controlling angular accuracy in optical sensing arrays 失效的方法和装置的光学传感器布置的角度偏差的控制。
公开(公告)号：EP0658718A3
公开(公告)日：1996-03-13
申请号：EP94309241.1
申请日：1994-12-12
发明人： Blau, David
CPC分类号： G01V8/20
摘要： An optical sensing array (12) and method of operation for controlling the acceptance angle of light beams (26) which are iteratively strobed in side-by-side channels between light transmitters (14) and light receivers (16). The light beams (26) in at least a pair of channels are directed along axes which are intentionally mispointed or squinted. A control circuit (100) measures the amplitudes of signals produced responsive to light being received by the light receivers (16) and compares the ratio of those amplitudes to the ratio of predetermined high and low amplitude values which provide a threshold window. When the ratio of the signal amplitudes exceeds the ratio of the window threshold values, an output signal is produced indicative of an unsafe operating condition. The control circuit (100) further maintains the gain of the signals from the light receivers (16) to stay within the range of the predetermined window threshold values.
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9.发明公开Method and system for controlling angular accuracy in optical sensing arrays 失效Verfahren und Vorrichtung zur Kontrolle der Winkelabweichung einer optischen Sensoranordnung。
公开(公告)号：EP0658718A2
公开(公告)日：1995-06-21
申请号：EP94309241.1
申请日：1994-12-12
发明人： Blau, David
CPC分类号： G01V8/20
摘要： An optical sensing array (12) and method of operation for controlling the acceptance angle of light beams (26) which are iteratively strobed in side-by-side channels between light transmitters (14) and light receivers (16). The light beams (26) in at least a pair of channels are directed along axes which are intentionally mispointed or squinted. A control circuit (100) measures the amplitudes of signals produced responsive to light being received by the light receivers (16) and compares the ratio of those amplitudes to the ratio of predetermined high and low amplitude values which provide a threshold window. When the ratio of the signal amplitudes exceeds the ratio of the window threshold values, an output signal is produced indicative of an unsafe operating condition. The control circuit (100) further maintains the gain of the signals from the light receivers (16) to stay within the range of the predetermined window threshold values.
摘要翻译： 该方法包括控制来自光学阵列的光束的接收角，该光学阵列以从并排通道中的多个光发射器到与相应通道相关联并且适于感测的多个光接收器的周期性地循环地选通 用于产生信号的光束。 该方法包括将光束沿着第一轴线引导在第一通道中，该第一轴线被倾斜为w.r.t。 第二轴，至少第二通道中的光束沿着该第二轴产生响应于由与第一通道相关联的光接收器感测到的光的信号V1，A信号V2响应于由第一通道检测到的光而产生 建立与第二通道相关的接收器以及预定的高和低振幅值VH和VL。 将比率V1 / V2与比率VH / VL进行比较，并且响应于V1 / V2大于VH / VL产生输出信号。 将值V1和V2转换成相应的对数值Log1和Log2，将值VH和VL转换成相应的对数值LogH和LogL。 通过确定值X = Log1-Log2和值Y = LogH-LogL并通过确定值X和Y之间的差异来进行比率V1 / V2与比率VH / VL的比较。
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公开(公告)号：EP1800273A1
公开(公告)日：2007-06-27
申请号：EP05794821.8
申请日：2005-09-08
摘要： An air guard directs air toward a viewing window of an optoelectronic presence sensing device to reduce surface contamination thereon. The air guard may include a control valve, and possibly control circuits, to enable selective activation of the air guard. In one embodiment, the air guard includes one or more slits configured to vent pressurized air in a generally laminar (curtain like) flow in front of the window to prevent the deposition of airborne contaminants thereon. Alternatively, or additionally, the air guard may include one or more nozzles configured to vent pressurized air in directed air streams toward the window to remove surface contaminants thereon, and may include a control valve enabling selective operation in preventive, cleaning, or standby modes. Mode control may be effected by an external control system, by the presence sensing device, or by the air guard itself, which may include a timer or other control circuit.
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