公开(公告)号：US4776433A

公开(公告)日：1988-10-11

申请号：US148394

申请日：1988-01-25

Applicant: James L. Lagree ,  Richard A. Johnson ,  Dirk J. Boomgaard ,  Daphne C. D'Zurko

Inventor： James L. Lagree ,  Richard A. Johnson ,  Dirk J. Boomgaard ,  Daphne C. D'Zurko

IPC: B66B13/26 ,  G05D3/00 ,  B66B13/08

CPC classification number: G05D3/00 ,  G05B2219/37318 ,  G05B2219/37624 ,  G05B2219/43074 ,  G05B2219/43075 ,  G05B2219/43204 ,  G05B2219/45242

Abstract: A feedback controlled elevator door control system 30 having motoring and generating modes, including a DC motor 35 connected to a DC power supply 36 via a power bridge circuit 68. Protective features include a dynamic current limit reference 200 having a magnitude which changes with motor speed; control 116 for providing an object detection safety-stop speed pattern having parameters which are selectable independent of the door stopping portions of normal opening and closing speed patterns; a bridge monitor 66 which prevents the changing of door commands when motor reversal could cause a bridge short; a power supply monitor 40 which blocks door commands when the control voltage is below standard; and an over-voltage protection monitor 38 which protects against excessive voltage build-up on DC power supply components when the bridge circuit 68 pumps power back to the DC power supply 36 during a generating mode.

Abstract translation: 具有电动和发电模式的反馈控制电梯门控制系统30，包括通过电力电桥电路68连接到直流电源36的直流电动机35.保护特征包括具有随电动机速度变化的幅度的动态限流基准200 ; 控制器116，用于提供具有可以独立于正常打开和关闭速度模式的门停止部分选择的参数的物体检测安全停止速度模式; 桥电视机66，当电机反转可能导致电桥短路时，防止门指令改变; 当控制电压低于标准时阻止门指令的电源监视器40; 以及过电压保护监视器38，其在桥接电路68在生成模式期间将功率回送到DC电源36时，防止DC电源组件上的过度的电压累积。

公开(公告)号：US4646319A

公开(公告)日：1987-02-24

申请号：US706079

申请日：1985-02-27

Applicant: Joseph C. Engel ,  Dirk J. Boomgaard ,  Leonard C. Vercellotti

Inventor： Joseph C. Engel ,  Dirk J. Boomgaard ,  Leonard C. Vercellotti

IPC: H04B3/56 ,  H04L12/40 ,  H04L5/14

CPC classification number: H04L12/403 ,  H04B3/56 ,  H04L12/40 ,  H04B2203/5416 ,  H04B2203/5425 ,  H04B2203/5483 ,  H04B2203/5487 ,  H04B2203/5491

Abstract: A bidirectional coupling circuit is provided for carrier based communication and control networks in which a coupling transformer is employed having relatively decoupled primary and secondary windings which are each tuned to the carrier frequency. Separate secondary windings are wound on the same core leg, one of these secondary windings being employed as a transmitter winding which is referenced to a positive supply voltage and the other winding being employed as a receiver winding which is referenced to ground. The coupling transformer is arranged to have a relatively high input impedance at the carrier frequency but due to series resonant effects has a relatively low impedance for undesired signals on either side of the carrier frequency. An operational amplifier is connected to the receiver winding to provide high gain amplification for a signal received from the common network power line without loading the other windings of the transformer. A transistor or FET is connected in series with the transmitter secondary winding to a positive voltage supply so that a relatively high amplitude transmitter signal is produced on the common power line.

Abstract translation: 提供了一种用于基于载波的通信和控制网络的双向耦合电路，其中使用耦合变压器，其具有相对去耦的初级和次级绕组，每个绕组被调谐到载波频率。 单独的次级绕组缠绕在相同的芯柱上，这些次级绕组中的一个被用作以正电源电压为基准的发射器绕组，而另一绕组被用作参考地的接收器绕组。 耦合变压器布置成在载波频率处具有相对高的输入阻抗，但是由于串联谐振效应对于载波频率的任一侧上的不期望信号具有相对较低的阻抗。 一个运算放大器连接到接收器绕组，为从公共网络电力线接收的信号提供高增益放大，而不需要加载变压器的其他绕组。 将晶体管或FET与发射机次级绕组串联连接到正电压源，使得在公共电力线上产生相对高幅度的发送器信号。

公开(公告)号：US4118717A

公开(公告)日：1978-10-03

申请号：US806118

申请日：1977-06-10

Applicant: William E. Shoupp ,  Walter V. Bratkowski ,  Dirk J. Boomgaard

Inventor： William E. Shoupp ,  Walter V. Bratkowski ,  Dirk J. Boomgaard

IPC: G03B9/70 ,  G03B15/04 ,  G03B7/08

CPC classification number: G03B9/70 ,  G03B15/0452

Abstract: The "f" stop of a camera having a fixed shutter speed is automatically set by a galvanometer type control component that is energized by a mechanically powered electric generator which constitutes an integral part of the camera. The shutter is tripped in predetermined time-delayed sequence relative to tripping of the generator and the latter is automatically recocked along with the shutter when the film is advanced. Precise and reliable dynamic regulation and setting of the "f " stop as the picture is being taken is thus achieved without the aid of a battery.

Abstract translation: 具有固定快门速度的相机的“f”停止通过由构成相机的组成部分的机械动力发电机激励的电流计型式控制部件自动设定。 相对于发生器的跳闸，快门以预定的时间延迟顺序跳闸，并且当快门被提前时，快门随着快门自动重新插入。 因此，不用电池就可以实现“f”停止的精确可靠的动态调节和设定。