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    • 1. 发明授权
    • Method and apparatus for machine health inference by comparing two like
loaded components
    • 通过比较两个类似加载组件的机器健康推理的方法和装置
    • US5566091A
    • 1996-10-15
    • US269474
    • 1994-06-30
    • David R. SchrickerRolland D. SchollSatish M. ShettyDavid G. Young
    • David R. SchrickerRolland D. SchollSatish M. ShettyDavid G. Young
    • G01D21/00F01N11/00F02B3/06F02B75/18F02B77/08F02D41/22F02D45/00G01M15/04G05B23/02G08B21/00
    • F02D41/22F01N11/002F02B77/08G01M15/048F02B2075/1824F02B3/06Y02T10/40Y02T10/47
    • A method and apparatus are disclosed for monitoring similar machine components loaded in parallel to produce trend information useful in diagnosing and predicting component degradation or failure. The invention is illustrated for engine cylinder exhaust port and manifold temperature measurements. In one embodiment split exhaust manifolds are each provided with a sensor to produce signals indicating the exhaust temperature. A computer-based trending module receives the parallel temperature information, periodically determines a difference between the temperatures, and averages the differential temperature readings over a predefined trend period to generate a trend values. A trend based on a plurality of the trend points is generated and monitored for changes which indicate the possible degradation of one of the measured components. A trap window (trend definition) comprising one or more machine operating parameter levels which must be met to generate a trend value can be used to improve the diagnostic value of the trending. The trap window can be further refined with a trap-lag period allowing the measured components to reach a steady state when a new trap window is entered before trend values are generated. The invention can be used with both stationary and mobile machines, with the data trending and monitoring performed either onboard or remotely from the machine.
    • 公开了用于监视并联加载的类似机器部件以产生用于诊断和预测部件退化或故障的趋势信息的方法和装置。 本发明用于发动机气缸排气口和歧管温度测量。 在一个实施例中,分开的排气歧管各自设置有传感器以产生指示排气温度的信号。 基于计算机的趋势模块接收并行温度信息,周期性地确定温度之间的差异,并且在预定义的趋势周期内平均差分温度读数以产生趋势值。 产生并基于多个趋势点的趋势来监测指示所测量的部件之一可能劣化的变化。 可以使用包括必须满足以产生趋势值的一个或多个机器操作参数水平的陷阱窗口(趋势定义)来改善趋势的诊断值。 陷阱窗口可以进一步细化,具有陷阱滞后期,允许测量的组件在生成趋势值之前输入新的陷阱窗口时达到稳定状态。 本发明可以与静态和移动机器一起使用,数据趋势和监视在机上或从机器远程执行。
    • 5. 发明授权
    • Earth working machine and blade condition control system therefor
    • 地面作业机及叶片状态控制系统
    • US4431060A
    • 1984-02-14
    • US278491
    • 1981-04-15
    • Rolland D. SchollGene B. Easterling
    • Rolland D. SchollGene B. Easterling
    • E02F3/84E02F3/76A01B63/111
    • E02F3/844E02F3/845
    • An earth working machine having an earth shaping blade (30) employs a control system for maintaining the blade (30) at a desired slope relative to a reference grade irrespective of lateral movement of the blade (30) or deflection of front and rear frame sections (15, 18). A ground engaging trailing wheel (96) mounted at the rear of the blade (30) senses rotation of the blade (30) relative to the direction of machine travel resulting from rotation or lateral shifting of the blade (30) and operates a potentiometer (124) to produce a control signal proportional to the magnitude of blade rotation. A first pair of accelerometers (128, 130) mounted on the blade (30) for rotation by the trailing wheel (96) produces blade controlling signals respectively corresponding to the change in slope and pitch of the blade (30) relative to the front frame section (15) of the machine. A second pair of accelerometers (42, 44) mounted at transversely spaced locations on the front frame section (15) produce control signals indicative of the roll of the front frame section (15) while an additional accelerometer (90) mounted on the rear frame section (18) produces control signals indicative of the frame pitch. An electronic circuit (94) algebraically combines the control signals for use in controlling the operation of a pair of hydraulic cylinders (38, 40) which maintain the blade (30) at a desired slope.
    • 具有接地成型刀片(30)的土方工程机械采用控制系统,用于将刀片(30)保持在相对于参考等级所需的斜率,而与刀片(30)的横向移动或前后车架部分的偏转无关 (15,18)。 安装在叶片(30)的后部的接地后轮(96)感测叶片(30)相对于由叶片(30)的旋转或横向移动导致的机器行进方向的旋转,并操作电位计( 124)以产生与叶片旋转大小成比例的控制信号。 安装在叶片(30)上以便由后轮(96)旋转的第一对加速度计(128,130)产生分别对应于叶片(30)相对于前框架的倾斜和间距变化的叶片控制信号 机器的部分(15)。 安装在前框架部分(15)上的横向间隔位置处的第二对加速度计(42,44)产生指示前框架部分(15)的滚动的控制信号,而安装在后框架上的附加加速度计(90) 部分(18)产生指示帧间距的控制信号。 电子电路(94)代数地组合用于控制将刀片(30)保持在期望斜率的一对液压缸(38,40)的操作的控制信号。
    • 6. 发明授权
    • Fluid particle sensor apparatus and method for transmitting data to a remote receiver
    • 用于将数据发送到远程接收器的流体颗粒传感器装置和方法
    • US06392562B1
    • 2002-05-21
    • US09221400
    • 1998-12-28
    • Timothy A. BostonRolland D. SchollBruce E. Unger
    • Timothy A. BostonRolland D. SchollBruce E. Unger
    • G08C1700
    • G01N15/0656G01N33/2888G08C17/02
    • A sensor for detecting particles in a fluid including a housing having a cavity associated therewith, a magnet disposed adjacent the cavity to attract particles into the cavity, first and second coils wound around the outer surface of the cavity, the induction of the first coil being responsive to the particle accumulation within the cavity, the inductance of the second coil being responsive to the temperature of the fluid and being independent of the particle accumulation within the cavity, a first microprocessor coupled to the first and second coils for processing the signals received therefrom and for outputting signals indicative of the particle accumulation within the cavity, an rf transmitter for converting the signals received from the first microprocessor into rf signals, and an rf antenna for transmitting the processed signals to a remote location. The signals outputted from the first microprocessor are encoded with an identification code to identify and distinguish such signals. A second rf antenna and receiver are positioned at a remote location for receiving the transmitted rf signals. The receiver decodes and processes such transmitted rf signals back into an electrical signal indicative of the particle accumulation within the cavity and inputs such signal into a second microprocessor or electronic controller which stores and monitors such information for diagnostic, prognostic and trend analysis purposes.
    • 一种用于检测流体中的颗粒的传感器,包括具有与其相关联的空腔的壳体;邻近腔体设置的磁体,以将颗粒吸引到空腔中;缠绕在空腔的外表面上的第一和第二线圈,第一线圈的感应 响应于空腔内的颗粒积累,第二线圈的电感响应于流体的温度并且独立于空腔内的颗粒积聚,耦合到第一和第二线圈的第一微处理器,用于处理从其接收的信号 并且用于输出指示空腔内的颗粒累积的信号,用于将从第一微处理器接收的信号转换成rf信号的rf发射器,以及用于将经处理的信号发送到远程位置的rf天线。 从第一微处理器输出的信号用识别码进行编码,以识别和区分这些信号。 第二rf天线和接收器位于远程位置,用于接收所发送的rf信号。 接收机将这样的发送的rf信号解码并处理成指示空腔内的颗粒累积的电信号,并将这些信号输入到第二微处理器或电子控制器中,该第二微处理器或电子控制器存储和监视这些信息以用于诊断,预测和趋势分析。