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1.发明授权Optical obstruction detector with light barriers having planes of light for controlling automatic doors 失效具有光屏障的光阻塞检测器，具有用于控制自动门的光平面
公开(公告)号：US5410149A
公开(公告)日：1995-04-25
申请号：US91799
申请日：1993-07-14
CPC分类号： B66B13/26 , E05F15/73 , G01V8/20 , E05F15/43 , E05F2015/434 , E05Y2900/104
摘要： An obstruction detection system includes emitters, a sensor, and obstruction detection circuitry. The emitters mounted along the top of an opening radiate a plane of light toward the floor. The plane of light intersects the floor and creates a floorline at the intersection of the plane of light and the floor. The plane of light also intersects the door edge and creates a door edge line at the intersection of the door edge and the plane of light. A sensor, located outside the plane of light, monitors the opening so that the presence of the obstruction can be detected from a change in a received light pattern of the floorline, the door edge line, and from reflections from an obstruction in the plane of light. The sensor provides an output signal in response to the received light pattern to a means for analyzing said sensor output signal for obstruction detection.
摘要翻译： 障碍物检测系统包括发射器，传感器和障碍物检测电路。 沿着开口顶部安装的发射器将光线朝向地板辐射。 光线与地板相交，并在光线与地板的交点处形成一条路线。 光平面也与门边缘相交，并在门边缘和光平面的交点处形成门边缘线。 位于光平面外部的传感器监测开口，使得可以从接收到的地板线，门边缘线的光线图案的变化以及来自在平面内的障碍物的反射中检测障碍物的存在 光。 该传感器响应于所接收的光模式将输出信号提供给用于分析所述传感器输出信号以阻塞检测的装置。
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公开(公告)号：US5159575A
公开(公告)日：1992-10-27
申请号：US546819
申请日：1990-07-02
IPC分类号： G01C19/72
CPC分类号： G01C19/726
摘要： A fiber optic rotation sensor includes a fiber optic coil with light beams counterpropagating therein where the beams are phase modulated with a squarewave carrier at the coil eigenfrequency. The beams recombine at the coil output with a resultant optical intensity which is a measure of the change in sensor rotation rate. The recombined signal also contains an error component due to squarewave carrier imperfections which cause high frequency spikes in the modulated rate signal resulting in rotational rate bias errors. The rotational rate bias errors are reduced by demodulating the modulated rate signal with a demodulator reference signal uniformly phase dithered about the carrier signal.
摘要翻译： 光纤旋转传感器包括具有在其中相反传播的光束的光纤线圈，其中光束以线圈本征频率的方波载波相位调制。 光束在线圈输出端复合，产生的光强度是传感器旋转速度变化的量度。 重组信号还包含由于方波载波缺陷引起的误差分量，这导致调制速率信号中的高频尖峰导致旋转速率偏差误差。 通过用解调器参考信号对载波信号均匀相位抖动解调调制速率信号来减小转速偏差误差。
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公开(公告)号：US5024535A
公开(公告)日：1991-06-18
申请号：US453538
申请日：1989-12-20
CPC分类号： H01S5/0014 , G01K11/12 , G01K7/01 , G05D23/27 , H01S5/06804 , H01S5/06808
摘要： A temperature sensing semiconductor device is fabricated in the same substrate as a semiconductor light source. A sensing voltage generated across the sensing device is proportional to light source temperature. The sensing voltage is amplified by an operational amplifier, and converted into a digital signal by an analog to digital converter. A microprocessor converts the digital signal into a corresponding temperature signal using a look-up table.
摘要翻译： 温度感测半导体器件制造在与半导体光源相同的衬底中。 感测装置两端产生的感应电压与光源温度成比例。 感测电压由运算放大器放大，并由模数转换器转换为数字信号。 微处理器使用查找表将数字信号转换成相应的温度信号。
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公开(公告)号：US5535626A
公开(公告)日：1996-07-16
申请号：US361277
申请日：1994-12-21
IPC分类号： G01P1/02 , G01P15/125 , G01P15/08
CPC分类号： G01P1/023 , G01P15/125 , G01P2015/0828
摘要： A silicon capacitive microsensor which is sensitive to acceleration forces includes a silicon capacitive sensing element 10 comprising three silicon layers 12,16,26 having glass dielectric layers 14,24 between each pair of silicon layers with the middle silicon layer 16 consisting of a proof mass 18 suspended between the two glass dielectric layers 14,24 by a silicon hinge 20 which is connected to a slightly thicker silicon support layer 17 around the periphery (FIG. 3 ) between the glass layers 14,24 (FIG. 1 ). Three metallic bond pads 40,42,44 on the surface 45 of the silicon layers 26,16,12, respectively, are soldered to circuit trace pads 108 on a circuit board 100 which has a glass upper layer 104 and a silicon support layer 102. The thermal expansion coefficient between the glass layer 104 and the sensing element 10 are substantially the same, thereby minimizing thermally induced stresses on the sensing element 10 and minimizing inaccuracies associated therewith. Such direct mounting greatly simplifies the manufacturing process for such sensors. Also, such direct mounting eliminates flying leads thereby allowing the sensing element 10 to be fabricated to much smaller dimensions than that of the prior art.
摘要翻译： 对加速力敏感的硅电容微传感器包括硅电容感测元件10，其包括在每对硅层之间具有玻璃介电层14,24的三个硅层12,16,26，中间硅层16由检测质量块 18通过硅铰链20悬挂在两个玻璃介电层14,24之间，该硅铰链20连接到玻璃层14,24（图1）周围的周边（图3）之间的略厚的硅支撑层17。 分别在硅层26,16,12的表面45上的三个金属接合焊盘40,42,44焊接到电路板100上的电路迹线焊盘108，电路板100具有玻璃上层104和硅支撑层102 玻璃层104和感测元件10之间的热膨胀系数基本上相同，从而最小化感应元件10上的热致应力并最小化与之相关联的不准确度。 这种直接安装大大简化了这种传感器的制造过程。 此外，这种直接安装消除了飞行引线，从而允许将感测元件10制造成比现有技术小得多的尺寸。
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公开(公告)号：US5711480A
公开(公告)日：1998-01-27
申请号：US731633
申请日：1996-10-15
申请人： Bruce E. Zepke , Merrill R. Lucia , Charles R. Winston, Jr. , Earl D. Hasselmark , Taeyoung Park
发明人： Bruce E. Zepke , Merrill R. Lucia , Charles R. Winston, Jr. , Earl D. Hasselmark , Taeyoung Park
CPC分类号： G05D23/1905
摘要： Communication between the various elements of HVAC systems is effected by means of low-cost, low-power, narrow-band AM SAW-stabilized transmitters 21, 27, 39, 86 and receivers 18, 28, 47, 89. A residential embodiment (FIG. 1) transmits temperature information from each room of the house to a master control 24, which is used to control the HVAC demand and to control the damper in the corresponding room. In a first commercial building embodiment (FIGS. 2 and 3), thermostat/transceiver 61-66 assemblies transmit not only demand and control information from the corresponding thermostat 78 (with switches), but relay information transmitted from other thermostat/transceiver assemblies, whereby messages are retransmitted from one floor to the next to overcome the high attenuation of commercial building construction in reaching rooftop HVAC systems 71-76. In a second commercial building embodiment (FIG. 4), messages are transmitted from a thermostat/transceiver assembly 92 in each floor to a relaying transceiver assembly 96 in a stairwell, the transmissions to rooftop units 93, 97 being made with little attenuation through the stairwell and the roof. Message protocols with or without acknowledgement may be used. Relative humidity and CO.sub.2 level may be controlled as well as temperature.
摘要翻译： HVAC系统的各种元件之间的通信是通过低成本，低功率，窄带AM SAW稳定发射机21,27,39,86和接收机18,28,47,89来实现的。住宅实施例（ 图1）将来自房屋的每个房间的温度信息传送到主控制器24，主控制器24用于控制HVAC需求并控制相应房间中的阻尼器。 在第一商业建筑实施例（图2和图3）中，恒温器/收发器61-66组件不仅从相应的恒温器78（具有开关）传送需求和控制信息，而且从其他恒温器/收发器组件发送的继电器信息，从而 消息从一层转发到下一层，以克服商业建筑施工在达到屋顶暖通空调系统71-76时的高衰减。 在第二个商业建筑实施例（图4）中，消息从每个楼层的恒温器/收发机组件92传送到楼梯间的中继收发机组件96，通过通过 楼梯间和屋顶。 可以使用具有或不具有确认的消息协议。 可以控制相对湿度和二氧化碳浓度以及温度。
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公开(公告)号：US5131750A
公开(公告)日：1992-07-21
申请号：US533189
申请日：1990-06-04
IPC分类号： G01C19/72
CPC分类号： G01C19/726
摘要： A fiber optic rotation sensor having a pair of light beams counterpropagating in a loop includes a phase modulator for modulating the waves at a first frequency, upon exiting the loop the waves are combined into a light intensity signal indicative of rotation rate and is sensed. A signal at the first frequency is quadrature phase shifted by a lower frequency signal and summed with the sensed rate signal, an amplifier amplifies the summed signals, the amplifier also inherently induces undesirable phase shifts by an equal amount in both the sensed rate signal and the quadrature signal. The quadrature signal is demodulated and used in feedback fashion to control the phase of a variable phase shifter which provides a signal at the first frequency whose phase is shifted by an amount equal to the undesirable phase shift of the sensed rate signal, the variable phase shifter signal and the sensed rate signal being provided to a demodulator to demodulate rotation rate information from the sensed rate signal.
摘要翻译： 具有在循环中相反传播的一对光束的光纤旋转传感器包括相位调制器，用于在离开环路时将波组合成指示旋转速率并被感测的光强度信号中的第一频率调制波。 在第一频率处的信号被正交相移一个较低的频率信号，并与感测的速率信号相加，放大器放大相加的信号，放大器也固有地在感测的速率信号和 正交信号。 正交信号被解调并以反馈方式使用，以控制可变移相器的相位，该可变移相器提供第一频率处的信号，该相位被移位了相当于感测速率信号的不希望的相移的量，可变移相器 信号，并且所感测的速率信号被提供给解调器以从所感测的速率信号中解调转速信息。
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