ADVANCED UNDERGROUND HOMING SYSTEM, APPARATUS AND METHOD

    公开(公告)号:US20190048711A1

    公开(公告)日:2019-02-14

    申请号:US16161043

    申请日:2018-10-15

    Abstract: A boring tool that is moved by a drill string to form an underground bore. A transmitter transmits a time varying dipole field as a homing field from the boring tool. A pitch sensor detects a pitch orientation of the boring tool. A homing receiver is positionable at a target location for detecting the homing field to produce a set of flux measurements. A processing arrangement uses the pitch orientation and flux measurements with a determined length of the drill string to determine a vertical homing command for use in controlling depth in directing the boring tool to the target location such that the vertical homing command is generated with a particular accuracy at a given range between the transmitter and the homing receiver and which would otherwise be generated with the particular accuracy for a standard range, different from the particular range. An associated system and method are described.

    Advanced underground homing system, apparatus and method

    公开(公告)号:US10107090B2

    公开(公告)日:2018-10-23

    申请号:US15231764

    申请日:2016-08-08

    Abstract: A boring tool that is moved by a drill string to form an underground bore. A transmitter transmits a time varying dipole field as a homing field from the boring tool. A pitch sensor detects a pitch orientation of the boring tool. A homing receiver is positionable at a target location for detecting the homing field to produce a set of flux measurements. A processing arrangement uses the pitch orientation and flux measurements with a determined length of the drill string to determine a vertical homing command for use in controlling depth in directing the boring tool to the target location such that the vertical homing command is generated with a particular accuracy at a given range between the transmitter and the homing receiver and which would otherwise be generated with the particular accuracy for a standard range, different from the particular range. An associated system and method are described.

    MEASUREMENT DEVICE AND ASSOCIATED METHOD FOR USE IN FREQUENCY SELECTION FOR INGROUND TRANSMISSION

    公开(公告)号:US20170350930A1

    公开(公告)日:2017-12-07

    申请号:US15685790

    申请日:2017-08-24

    Abstract: A portable device and associated method are described for use with a system in which a locating signal is transmitted from within the ground during an operational procedure. The locating signal includes a transmission frequency that is selectable from a group of discrete transmission frequencies in a frequency range and the region includes electromagnetic noise that can vary. The portable device includes a receiver having a bandwidth that includes the transmission frequency range and is operable for measuring the electromagnetic noise in the transmission frequency range to establish a frequency content of the electromagnetic noise for use in selecting one of the discrete transmission frequencies that is subsequently transmitted as the locating signal during the operational procedure. The locating signal can be transmitted from a boring tool, a pullback arrangement or an inground cable. A predicted maximum operational depth for a transmitter can be determined prior to the operational procedure.

    FLUX PLANE LOCATING IN AN UNDERGROUND DRILLING SYSTEM

    公开(公告)号:US20170268329A1

    公开(公告)日:2017-09-21

    申请号:US15611429

    申请日:2017-06-01

    Abstract: A portable locator and method for establishing the location of the cable line in a region which includes at least one generally straight electrically conductive cable line extending across the region from which cable line a locating signal includes a first arrangement for measuring a local flux intensity of the locating signal at a first above ground point within the region with the portable locator in a particular orientation at the first above ground point. A second arrangement uses the local flux intensity to establish a cable line angular orientation which limits the possible directions to the cable line relative to the particular orientation of the portable locator at the above ground point. A third arrangement uses the measured local flux intensity to establish an actual direction of the cable line that is selected from the possible directions based on certain characteristics of the locating signal.

    ROTORCRAFT AUTOPILOT SYSTEM, COMPONENTS AND METHODS

    公开(公告)号:US20170129599A1

    公开(公告)日:2017-05-11

    申请号:US15415469

    申请日:2017-01-25

    Abstract: An autopilot actuator includes first and second motors each including a rotatable motor output shaft such that either one or both of the motors can drive an actuator output shaft. An autopilot main unit enclosure is removably mounted to the helicopter proximate to a cyclic control and commonly houses autopilot actuators as well as main autopilot electronics. A cyclic vibration isolator is removably supported by an actuator shaft for co-rotation and coupled to the cyclic control to attenuate a cyclic vibration frequency at the actuator shaft while output rotations of the actuator shaft below a resonant frequency are coupled to the cyclic control. A force limited link includes first and second ends and a variable length between. The force limited link having a relaxed length when less than an unseating force is applied and the variable length changes when an applied force exceeds the unseating force to permit pilot override.

    Rotorcraft autopilot system, components and methods
    149.
    发明授权
    Rotorcraft autopilot system, components and methods 有权
    Rotorcraft自动驾驶仪系统,组件和方法

    公开(公告)号:US09586681B2

    公开(公告)日:2017-03-07

    申请号:US14858080

    申请日:2015-09-18

    Abstract: An autopilot actuator includes first and second motors each including a rotatable motor output shaft such that either one or both of the motors can drive an actuator output shaft. An autopilot main unit enclosure is removably mounted to the helicopter proximate to a cyclic control and commonly houses autopilot actuators as well as main autopilot electronics. A cyclic vibration isolator is removably supported by an actuator shaft for co-rotation and coupled to the cyclic control to attenuate a cyclic vibration frequency at the actuator shaft while output rotations of the actuator shaft below a resonant frequency are coupled to the cyclic control. A force limited link includes first and second ends and a variable length between. The force limited link having a relaxed length when less than an unseating force is applied and the variable length changes when an applied force exceeds the unseating force to permit pilot override.

    Abstract translation: 自动驾驶执行器包括第一和第二电动机,每个电动机包括可旋转的电动机输出轴,使得电动机中的一个或两个可以驱动致动器输出轴。 自动驾驶仪主机壳体可拆卸地安装在靠近循环控制的直升机上,并且通常容纳自动驾驶执行器以及主要的自动驾驶仪电子装置。 循环式隔振器由致动器轴可拆卸地支撑,用于共同旋转并且耦合到循环控制器,以在致动器轴处衰减循环振动频率,同时致动器轴的低于谐振频率的转速耦合到循环控制。 力限制连杆包括第一和第二端以及两者之间的可变长度。 当施加小于放开力的力时,力限制连杆具有松弛的长度,并且当施加的力超过转动力以允许引导超驰时,可变长度改变。

    LOCATING ARRANGEMENT AND METHOD USING BORING TOOL AND CABLE LOCATING SIGNALS
    150.
    发明申请
    LOCATING ARRANGEMENT AND METHOD USING BORING TOOL AND CABLE LOCATING SIGNALS 有权
    定位安排和使用镗孔工具和电缆定位信号的方法

    公开(公告)号:US20170059733A1

    公开(公告)日:2017-03-02

    申请号:US15350639

    申请日:2016-11-14

    CPC classification number: G01V3/081 E21B47/0905 G01V3/15 G01V3/30 G01V3/38

    Abstract: An arrangement and an associated method are described in which a boring tool is moved through the ground within a given region along a path in which region a cable is buried. The boring tool and the cable transmit a boring tool locating signal and a cable locating signal, respectively. Intensities of the boring tool locating signal and the cable locating signal are measured along with a pitch orientation of the boring tool. Using the measured intensities and established pitch orientation, a positional relationship is determined to relative scale including at least the boring tool and the cable in the region. The positional relationship is displayed to scale in one view. The positional relationship may be determined and displayed including the forward locate point in scaled relation to the boring tool and the cable. Cable depth determination techniques are described including a two-point ground depth determination method.

    Abstract translation: 描述了一种布置和相关方法,其中镗孔工具沿着沿着其中埋入电缆的区域的路径在给定区域内移动通过地面。 钻孔工具和电缆分别传输钻孔定位信号和电缆定位信号。 镗刀定位信号和电缆定位信号的强度随钻孔工具的俯仰方向一起测量。 使用所测量的强度和建立的俯仰方向,确定位置关系至至少包括该钻孔工具和该区域中的电缆的相对标度。 位置关系在一个视图中以比例显示。 可以确定和显示位置关系,包括与镗孔工具和电缆成比例关系的前向定位点。 描述了电缆深度确定技术,其包括两点地面深度确定方法。

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