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    • 92. 发明授权
    • Bearing sensor and bearing-distance sensor
    • 轴承传感器和轴承距离传感器
    • US5597954A
    • 1997-01-28
    • US539133
    • 1995-10-04
    • Takeshi Nakamura
    • Takeshi Nakamura
    • G01C22/00G01C21/10G01C21/16G01C21/26G01P15/10G01P15/18G01P7/00
    • G01C21/16G01C21/10G01C21/26
    • A small and inexpensive bearing-distance sensor capable of detecting a travel bearing and a travel distance of a vehicle. The bearing-distance sensor includes a rectangular parallelepiped case. A first acceleration sensor and a second acceleration sensor are mounted within the case. The first acceleration sensor detects an acceleration in a first direction, e.g. the longitudinal direction of the case, to obtain a signal related to the acceleration, and the second acceleration sensor detects a force applied in the width direction of the case, which is perpendicular to the first direction, to obtain a signal related to that force. The travel distance of the vehicle is found from the output signal of the first acceleration sensor, and the travel bearing of the vehicle is found from the output signals of the first and second acceleration sensors.
    • 一种小型廉价的轴承距离传感器,能够检测行驶轴承和车辆行驶距离。 轴承距离传感器包括一个长方体壳体。 第一加速度传感器和第二加速度传感器安装在壳体内。 第一加速度传感器检测第一方向上的加速度,例如。 以获得与加速度相关的信号,并且第二加速度传感器检测在垂直于第一方向的壳体的宽度方向上施加的力,以获得与该力相关的信号。 根据第一加速度传感器的输出信号,求出车辆行驶距离,根据第一加速度传感器和第二加速度传感器的输出信号求出车辆的行驶方位。
    • 94. 发明授权
    • Position identification device using an accelerometer
    • 位置识别装置使用加速度计
    • US5492010A
    • 1996-02-20
    • US350797
    • 1994-12-07
    • Boyd B. Bushman
    • Boyd B. Bushman
    • G01C19/58G01C21/16G01P7/00G01P15/08
    • G01C19/58G01C21/16G01P15/08G01P7/00
    • A device for determining position uses three voltage dividers. Each voltage divider is a metal conductor having a head on one end and two legs on an opposite end. The tips of the legs of each of the bodies are located in planes which are perpendicular to the other bodies. A DC voltage is applied to the head of each of the bodies to create first and second electron flow paths. The voltage across each flow path is monitored. A difference in voltage of flow path relative to the other indicates a change in velocity in a direction wherein one leg leads the other leg. The voltage change correlates to acceleration. By timing the duration, velocity and distance travelled are computed. When mounted aboard a plane, vehicle, ship or spacecraft the unit displays a continous "present location".
    • 用于确定位置的装置使用三个分压器。 每个分压器是金属导体,其一端具有头部,另一端具有两个支脚。 每个身体的腿的尖端位于垂直于其他身体的平面中。 DC电压施加到每个主体的头部以产生第一和第二电子流动路径。 监测每个流路上的电压。 流路相对于另一方的电压差表示一条腿引导另一条腿的方向上的速度变化。 电压变化与加速度相关。 通过定时持续时间,计算行进的速度和距离。 当安装在飞机,车辆,船舶或航天器上时,该装置显示连续的“当前位置”。
    • 95. 发明授权
    • Two-wire constant current powered transducer
    • 双线恒流供电传感器
    • US5477735A
    • 1995-12-26
    • US105873
    • 1993-08-11
    • Don Li
    • Don Li
    • G01P7/00G01H1/00G01H11/06G01H11/08H03F3/347H03F3/45H03F3/04
    • G01H11/06G01H1/003H03F3/347
    • A two-wire constant current powered transducer (10) for detecting, integrating and transmitting an acceleration signal (50) received from a piezoelectric crystal (12). The crystal is operatively coupled to rotating machinery (M) such that rotating anomalies correlative of wear or potential failure can be detected early enough for preventative maintenance. The transducer (10) includes two stages (30, 40). The first stage (30) is an integrator which integrates the acceleration to velocity. The second stage (40) is a gain stage. The gain stage operates with a PNP transistor emitter follower to control the output DC bias level and route the integrated acceleration signal back to the control system.
    • 一种用于检测,积分和传输从压电晶体(12)接收的加速度信号(50)的二线恒流供电传感器(10)。 晶体可操作地耦合到旋转机械(M),使得可以及早检测到与磨损或潜在故障相关的旋转异常以进行预防性维护。 换能器(10)包括两个阶段(30,40)。 第一阶段(30)是将加速度与速度相结合的积分器。 第二阶段(40)是增益阶段。 增益级与PNP晶体管射极跟随器一起工作,以控制输出直流偏置电平,并将集成加速度信号转发回控制系统。
    • 97. 发明授权
    • Signal processing apparatus and method
    • 信号处理装置和方法
    • US5146417A
    • 1992-09-08
    • US489708
    • 1990-03-07
    • Norman F. Watson
    • Norman F. Watson
    • G01P15/16G01D3/00G01P7/00
    • G01P7/00
    • A method for correcting an integral signal representing the integral of an input signal derived from an accelerometer to eliminate the effects of errors in the input signal comprises sampling one or more signals which bear a functional relationship with the errors and subjecting the samples to a correction algorithmic process. The processed results are integrated and used to correct the input signal integral. Relatively few samples may be taken at below the Nyquist rate at random or pseudorandom intervals to provide an acceptable quantitive estimate of the error in the integrated input signal.The samples are spaced throughout the integration period by defining window intervals and taking one or more samples randomly in each window interval. Apparatus to practice the method include an integrator for integrating the input signal and a sample and hold circuit for sampling the input signal. Sample signals are subjected to the correction algorithmic process under the control of a control circuit arranged to provide output control signals that define sampling intervals at a high frequency rate, sampling window intervals and the integration time. An accumulator receives and stores processed samples with the output of the accumulator applied to a correction circuit to correct errors in the input signal which after integration is also applied to the correction circuit, the output of the correction circuit representing the corrected signal.
    • 98. 发明授权
    • Magnetohydrodynamic angular rate sensor for measuring large angular rates
    • 用于测量大角度角速度的磁流体动力学角速度传感器
    • US5067351A
    • 1991-11-26
    • US426254
    • 1989-10-25
    • Darren R. Laughlin
    • Darren R. Laughlin
    • G01P3/44G01P7/00G01P15/00G01P15/02G01P15/11
    • G01P3/44G01P7/00
    • An electronic motion sensor is described, wherein a cavity formed in a case of high flux density material supports a permanent magnet at the bottom. The permanent magnet has a north/south pole orientation in line with the cavity axis. A circular channel is located above, having an axis coincident with the cavity axis and which is filled with mercury. A center contact post is located long the cavity axis in contact with the mercury, extending upwards through the top of the channel. An amplifier circuit supported on a header of high flux density material is placed on top of the channel. The amplifier amplifies the potential difference between the center contact and the case. The header effectively seals the cavity of the case.
    • 描述了一种电子运动传感器,其中在高通量密度材料的情况下形成的空腔在底部支撑永磁体。 永磁体具有与腔轴线一致的北/南极取向。 圆形通道位于上方,具有与腔轴线重合并且被汞填充的轴线。 中心接触柱位于与汞接触的腔轴线的长度上,向上延伸通过通道的顶部。 支撑在高通量密度材料的头部上的放大器电路放置在通道的顶部。 放大器放大中心触点与外壳之间的电位差。 头部有效地密封外壳的腔体。
    • 99. 发明授权
    • Method for determining the air speed of a helicopter, system for
carrying on this method and method for calibrating such air speed
determining method and system
    • 用于确定直升机的空气速度的方法,用于进行该方法的系统和用于校准这种空气速度确定方法和系统的方法
    • US4829441A
    • 1989-05-09
    • US63534
    • 1987-06-18
    • Jacques MandleJean-Claude Goudon
    • Jacques MandleJean-Claude Goudon
    • G01P5/24G01P7/00G01P21/02
    • G01P7/00G01P21/025G01P5/24
    • The air speed is determined by solving the equation ##EQU1## in which P.sub.z is the pitch of the antitorque device, .gamma..sub.z, the vertical acceleration of the helicopter, k.sub.1 -k.sub.10, parameters depending on the type of helicopter, p.sub.x,y, the longitudinal or transverse cyclic pitch, p.sub.o the collective pitch of the main rotor, .theta..sub.x,y the angle of bank of the helicopter about the transverse or longitudinal axis of the helicopter. The system for determining the air speed may also include a conventional anemometer for hybridization with the computed speed. The parameters k.sub.1 -k.sub.10 are determined by self-calibration and by assuring that the variations of the ground speed and of the air speed are the same from one flight configuration to another one of a pair of flight configurations, among a series of pairs, for which the sensiting parameters of the helicopter are measured in the earth's reference by means of an airborne ground speed reference.
    • 通过求解方程Vx,y = k1(Px,y-θx,y)+ k7P2x,y + k8Px,yPz + k4Py,x + +TRk5θy,x + k2Pz +k9γz来确定空气速度 + k3Po + k6Po2 + k10,其中Pz是反制装置的间距,γz,直升机的垂直加速度,k1-k10,取决于直升机类型的参数,px,y,纵向或横向循环节距 ,主要转子的集体节距,θx,y是直升机围绕直升机的横向或纵向轴线的角度。 用于确定空气速度的系统还可以包括用于与所计算的速度杂交的常规风速计。 通过自校准来确定参数k1-k10,并且通过确保地面速度和空气速度的变化在一对对之间从一种飞行配置到另一种飞行配置是相同的,用于 通过空中地面速度参考在地球参考中测量直升机的感觉参数。
    • 100. 发明授权
    • Speed measuring device for a helicopter
    • 用于直升机的速度测量装置
    • US4648269A
    • 1987-03-10
    • US751553
    • 1985-07-03
    • Bernard Durand
    • Bernard Durand
    • B64D43/02G01P5/00G01P7/00G01C21/10
    • B64D43/02G01P5/00G01P7/00
    • The invention relates to the technical field of pilotage aids for helicopters. In a speed measuring device having two measuring devices for longitudinal speed and lateral speed of the helicopter, each measuring device comprises a single sensor (9a, 9b) for sensing the position of the cyclic rotor pitch control along the axis concerned, and for sensing the acceleration component along the same axis. Each measuring device further includes a computer to provide the air speed components of the helicopter. Applications include flight testing, and the construction of firing computers and flight computers.
    • 本发明涉及直升机引航辅助技术领域。 在具有用于直升机的纵向速度和横向速度的两个测量装置的速度测量装置中,每个测量装置包括单个传感器(9a,9b),用于感测沿着相关轴线的循环转子桨距控制的位置,并且用于感测 加速度分量沿着同一轴线。 每个测量装置还包括用于提供直升机的空气速度部件的计算机。 应用包括飞行测试,以及兴建计算机和飞行计算机。