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1. 发明授权

US6133699A Method and apparatus for operating a plurality of motors with a single controller 失效
标题翻译：用单个控制器操作多个电动机的方法和装置
公开(公告)号：US6133699A
公开(公告)日：2000-10-17
申请号：US733532
申请日：1996-10-18
申请人： Nick G. Vrionis , Robert M. Russ , Dave Blau , Leland M. Farrer
发明人： Nick G. Vrionis , Robert M. Russ , Dave Blau , Leland M. Farrer
IPC分类号： H02P1/42 , H02P25/04 , G10D3/00
CPC分类号： H02P1/42 , H02P25/04 , H02P2207/05
摘要： A system for operating a plurality of motors with a single controller is disclosed. This system includes a first motor, a second motor that is matched to the first motor but has a lower power rating than the first motor and a controller electrically driving the first and second motors with a modulated voltage at one frequency selected from one or more frequencies over a complete range of frequencies. The controller generates a frequency of the modulated voltage from the range of frequencies which is proportional to the desired speed for the first and second motors. A method for building such a system is also disclosed. This system and method have particular application to HVAC systems.
摘要翻译：公开了一种用于使用单个控制器操作多个电动机的系统。该系统包括第一电动机，与第一电动机匹配但具有比第一电动机低的额定功率的第二电动机，以及控制器，以从一个或多个频率选择的一个频率的调制电压来电驱动第一和第二电动机在一个完整的频率范围内。控制器从与第一和第二电动机的期望速度成比例的频率范围产生调制电压的频率。还公开了一种用于构建这种系统的方法。该系统和方法具有HVAC系统的特殊应用。

2. 发明授权

US5880464A Optical meter reader using a shadow 失效
标题翻译：光学仪读取器使用阴影
公开(公告)号：US5880464A
公开(公告)日：1999-03-09
申请号：US871813
申请日：1997-06-09
申请人： Nick G. Vrionis
发明人： Nick G. Vrionis
IPC分类号： G01D4/00 , G01D5/58 , G01F15/06 , G01R22/00 , G08S23/00
CPC分类号： G01D4/008 , G01D5/58 , G01F15/063 , G01R22/00 , Y02B90/247 , Y04S20/50
摘要： A meter reader for reading a meter by reading a shadow made by a meter pointer on the face of the meter. The meter reader includes a light source for shining a light toward the meter, a pulse control circuit for pulsing the light source, two light sensors for receiving reflections of the pulsed light from two sections of the face, a detection circuit for detecting the intensity of the reflections received by each of the sensors, a microprocessor system for calculating an intensity relationship between the intensities received by each of the sensors, a counter for incrementing a meter readout count when the intensity relationship varies indicating that the shadow has passed over both sections of the meter face, and a transmitter for transmitting the meter readout count in a meter readout signal.
摘要翻译：一个读表器，用于通过读取仪表指针上的一个阴影来读取仪表。仪表读取器包括用于将光照射到仪表的光源，用于脉冲光源的脉冲控制电路，用于接收来自面部两个部分的脉冲光的反射的两个光传感器，用于检测光的强度的检测电路由每个传感器接收的反射，用于计算由每个传感器接收的强度之间的强度关系的微处理器系统，当强度关系改变时增加仪表读数计数的计数器，指示阴影已经经过两个部分仪表面和用于在仪表读出信号中发送仪表读数的发送器。

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