Digital information transfer system (DITS) receiver
    1.
    发明授权
    Digital information transfer system (DITS) receiver 失效
    数字信息传输系统(DITS)接收机

    公开(公告)号:US4298959A

    公开(公告)日:1981-11-03

    申请号:US96969

    申请日:1979-11-23

    CPC分类号: G06F13/22 G06F13/28

    摘要: A DITS receiver provides direct memory access (DMA) for a central processing unit (CPU) to the latest update value of a plurality of pre-identified signal data words stored in a DITS data RAM. The DITS stores the data received asynchronously on a plurality of input channels directly in RAM as it is received, by stripping the first byte of the data word information field which identifies the data source and using this first byte ID as an address pointer to define the location in RAM for each remaining signal bit of the data word. The DITS slices the data received on each input channel into samples of less than one bit cell duration through a common sampling network which under sequence control provides commutation of the input channel samples to ensure that dual speed input channel are each sampled at least one time within the signal speed time period. The sampled data is multiplexed into a serial data stream and steered either to a first byte address register or directly to the data RAM.

    摘要翻译: DITS接收器为中央处理单元(CPU)提供存储在DITS数据RAM中的多个预先识别的信号数据字的最新更新值的直接存储器访问(DMA)。 DITS通过剥离识别数据源的数据字信息字段的第一字节,并使用该第一字节ID作为地址指针来存储在多个输入通道上异步接收的数据在RAM中直接接收的数据,以定义 数据字的每个剩余信号位的RAM位置。 DITS将每个输入通道上接收到的数据通过公共采样网络将小于一个位单元持续时间的采样片段分片,该公共采样网络在序列控制下提供输入通道采样的换向,以确保双速输入通道每个采样至少一次 信号速度时间段。 采样数据被多路复用成串行数据流,并被引导到第一字节地址寄存器或直接传送到数据RAM。

    Passenger entertainment system transducer failure detector
    2.
    发明授权
    Passenger entertainment system transducer failure detector 失效
    乘客娱乐系统传感器故障检测器

    公开(公告)号:US4374435A

    公开(公告)日:1983-02-15

    申请号:US219740

    申请日:1980-12-23

    IPC分类号: H04J3/14 H04R27/00 H04R29/00

    CPC分类号: H04R29/007 H04J3/14 H04R27/00

    摘要: Common seat group transducer BITE circuitry located within the seat group SEB is responsive to the audio signal output of each transducer driver amplifier, the transducer BITE circuitry sensing the peak-to-peak voltage amplitude of the output signal to determine the operability of each driver, and sensing the current amplitude and frequency of the output signal to determine the transducer operability.

    摘要翻译: 位于座椅组SEB内的普通座椅组传感器BITE电路响应每个换能器驱动放大器的音频信号输出,传感器BITE电路检测输出信号的峰 - 峰电压幅度,以确定每个驱动器的可操作性, 并且感测输出信号的当前幅度和频率以确定换能器的可操作性。

    Linear motor transfer of cab horizontally between elevator and bogey
platforms
    3.
    发明授权
    Linear motor transfer of cab horizontally between elevator and bogey platforms 失效
    电梯和平面平台之间的水平线性电机传动

    公开(公告)号:US5799755A

    公开(公告)日:1998-09-01

    申请号:US749295

    申请日:1996-11-14

    摘要: A cab having a wheeled carriage fixed thereto is moved between rails on an elevator car frame and similar rails on a wheeled bogey. The ends of the rails are scarfed in a complimentary fashion so as to provide a temporary half-lap joint between the rails of the bogey and the rails of the car frame. Motion is provided by linear motors having active primaries disposed on the car frame and the bogey and passive secondaries disposed on the cab carriage. Motor control is in response to position signals provided by magnetostrictive linear displacement transducers. The cab carriage includes rollers on vertical axes which contact the insides of the rails for guidance. The cab carriage wheels and rollers are disposed in pairs separated sufficiently so that at least one roller and one wheel of each pair is in contact with a full rail as the carriage crosses the rail joints between the car frame and the bogey. Wheels coated with urethane reduce wheel noise and tapers at the ends of the rails provide smooth rail to rail transitions.

    摘要翻译: 具有固定在其上的轮式支架的驾驶室在电梯轿厢架上的轨道和轮式铲斗上的类似轨道之间移动。 轨道的端部以互补的方式被切割,以便在车架的轨道和轿厢架的轨道之间提供暂时的半搭接头。 运动由具有设置在轿厢架上的主动基准线和布置在驾驶室支架上的起伏和无源次级的线性电动机提供。 电机控制是响应由磁致伸缩线性位移传感器提供的位置信号。 驾驶室支架包括垂直轴上的滚子,其接触导轨内部以用于引导。 驾驶室支架车轮和滚子成对分开设置,以足够的方式使得当滑架与汽车框架和铲斗之间的轨道接头相交时,每对的至少一个辊和一个车轮与全部轨道接触。 涂有聚氨酯的车轮减少车轮噪音,并在轨道端部的锥度提供光滑的轨到轨转换。

    Elimination of line impedance error in a three-wire probe interface
    4.
    发明授权
    Elimination of line impedance error in a three-wire probe interface 失效
    消除三线探头接口中的线路阻抗误差

    公开(公告)号:US4309653A

    公开(公告)日:1982-01-05

    申请号:US191035

    申请日:1980-09-25

    IPC分类号: G01K1/02 G01R17/06 G01K7/16

    摘要: An RTD probe interface having a three-wire interconnection with a source excitation line, a source return line, and a sensed signal line, includes: an excitation signal source connected between the source excitation line and the source return line for providing an excitation current signal through the RTD; an amplifier having first and second signal inputs connected respectively to the source excitation line and the sensed signal line, for providing an output voltage signal at a magnitude proportional to the difference magnitude between the voltage signals present at the first and second amplifier inputs, and a bias signal source connected between the sensed signal line and the source return line for presenting a bias current signal to the sensed line, at a magnitude and phase equal to that of the excitation current signal, for providing equal line impedance dependent values in the voltage signals appearing at the first and second inputs of the amplifier.

    摘要翻译: 具有与源激励线,源返回线和感测信号线的三线互连的RTD探针接口包括:激励信号源,连接在源激励线和源返回线之间,用于提供激励电流信号 通过RTD; 具有分别连接到源激励线和感测信号线的第一和第二信号输入的放大器,用于提供与存在于第一和第二放大器输入端的电压信号之间的差幅度成比例的幅度的输出电压信号,以及 偏置信号源连接在所感测的信号线和源极返回线之间,用于以等于激励电流信号的幅度和相位的幅度和相位向感测线呈现偏置电流信号,以在电压信号中提供相等的线路阻抗相关值 出现在放大器的第一和第二输入端。