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33 条记录 (耗时 0.011 秒)

    Shield-carried noncontact frequency-domain electrical real-time advanced detection system and method
    1.
    发明授权
    Shield-carried noncontact frequency-domain electrical real-time advanced detection system and method 有权

    公开(公告)号：US10260345B2

    公开(公告)日：2019-04-16

    申请号：US15323284

    申请日：2016-04-21

    申请人： SHANDONG UNIVERSITY

    发明人： Shucai Li ,  Lichao Nie ,  Bin Liu ,  Haidong Liu ,  Yuxiao Ren ,  Jie Song ,  Zhengyu Liu ,  Qian Guo ,  Chuanwu Wang

    IPC分类号： E21D9/00 ,  E21D9/06 ,  G01V3/26 ,  G01V3/08 ,  G08C15/10 ,  G08C23/04

    摘要： A shield-carried noncontact frequency-domain electrical real-time advanced detection system and method are provided. Noncontact electrodes are installed on a cutter head of a shield tunneling machine, current is emitted and received using capacitance coupling, the electrodes are connected to a host via a multi-way swivel joint, measured data is inversed and interpreted in real time, and the prediction result is transmitted to a control system of the shield tunneling machine so as to provide a technical support for safety construction of the shield tunneling machine; the noncontact electrodes are installed on the shield cutter head. Real-time advanced detection of geology in front of a tunnel face can be realized in the tunneling process, so that the requirement for quick tunneling construction is met, and the efficiency of advanced geological detection of the shield tunneling machine is improved; and an electrode system is only installed on the cutter head.

    Telemetry system for floor maintenance machines
    2.
    发明授权
    Telemetry system for floor maintenance machines 失效
    地板维修机遥测系统

    公开(公告)号：US4766432A

    公开(公告)日：1988-08-23

    申请号：US839879

    申请日：1986-03-14

    申请人： Bruce F. Field

    发明人： Bruce F. Field

    IPC分类号： A47L11/40 ,  G08C15/10 ,  G08C17/00 ,  H04Q9/00 ,  G08B5/36

    CPC分类号： A47L11/4011 ,  A47L11/4036 ,  G08C15/10 ,  G08C17/00 ,  A47L2201/00

    摘要： A telemetry system for a surface maintenance machine such as a scrubber or a sweeper has a plurality of sensors which monitor machine operating conditions. The sensors are periodically scanned and repetitive outputs indicative of sensor condition are used to provide tone coded telemetry signals. The tone coded signals are modulated on a suitable carrier frequency and are sent to a receiver which is remote from the sensors. The receiver decodes the tone coded signals to provide a display of the conditions being monitored by the sensors. The tone coded outputs from the transmitter also include an identification of the particular machine which is providing information for the display at the receiver.

    摘要翻译： 用于诸如洗涤器或清扫机的表面维护机器的遥测系统具有监控机器操作条件的多个传感器。 周期性扫描传感器，指示传感器状态的重复输出用于提供音调编码的遥测信号。 音调编码信号在合适的载波频率上进行调制，并被发送到远离传感器的接收机。 接收机对音调编码信号进行解码，以提供由传感器监控的状况的显示。 来自发射机的音频编码输出还包括为接收机提供显示信息的特定机器的标识。

    MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD
    5.
    发明申请
    MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD 审中-公开

    公开(公告)号：US20170345288A1

    公开(公告)日：2017-11-30

    申请号：US15607770

    申请日：2017-05-30

    申请人： Nidec Corporation

    发明人： Tomoyuki TANISUGI ,  Yuji NAKAMARU

    IPC分类号： G08C15/10 ,  G05F1/575

    CPC分类号： G08C15/10 ,  G05F1/575

    摘要： One exemplary embodiment of the present invention is a motor control device configured to control rotation of a motor based on a drive signal input from an input terminal wherein the motor control device extracts two or more pieces of information of first drive information indicating a drive state or a drive stop state of the motor, second drive information indicating a rotation direction of the motor, third drive information indicating whether the motor is in a forced stop state, and fourth drive information indicating a rotational speed of the motor from at least one of a duty ratio, a voltage, and a frequency in the single drive signal, and controls the motor.

    Data transmission system
    7.
    发明授权
    Data transmission system 失效
    数据传输系统

    公开(公告)号：US5333088A

    公开(公告)日：1994-07-26

    申请号：US804660

    申请日：1991-12-11

    申请人： George A. Sweet

    发明人： George A. Sweet

    IPC分类号： G08C15/06 ,  G08C15/10 ,  G08C19/00 ,  G08C19/02 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/26 ,  H04B10/28 ,  H04J3/00 ,  H04J14/02 ,  H04B10/12

    CPC分类号： G08C15/10 ,  G08C19/02

    摘要： The system enables data from analogue state sensors S1 to S16, four of which may be direct frequency sensors, located in a ZONE 0 (1) environment, to be transmitted by a master transmitter 10 via a fibre optic data link 16 to a master receiver 14. The master receiver is located in a safe environment. The master transmitter comprises a power restrictor unit 18 which has for each data channel a power supply and also a power supply for the printed circuit-board (pcb) of the master transmitter. The master transmitter is located in a ZONE 1 environment. The analogue or state data are voltages which are converted by voltage-to-frequency converters mounted on the pcb and passed to the multiplexer of the master transmitter. The multiplexer feeds the fibre optic link and a demultiplexer at the master receiver reproduces the frequencies. The master receiver re-converts the frequencies to voltage signals.

    摘要翻译： 该系统使得来自模拟状态传感器S1至S16的数据，其中四个可以是位于区域0（1）环境中的直接频率传感器，以由主发射机10经由光纤数据链路16发送到主接收机 主接收机位于安全环境中。 主发射机包括一个功率限制器单元18，其为每个数据信道提供一个电源以及一个用于主发射机的印刷电路板（pcb）的电源。 主发射机位于区域1环境中。 模拟或状态数据是由安装在pcb上的电压 - 频率转换器转换并传递到主发送器的多路复用器的电压。 多路复用器馈送光纤链路，主接收机上的解复用器再现频率。 主接收机将频率重新转换为电压信号。