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    • 42. 发明授权
    • Piecewise continuous control of groundwater remediation
    • 分段连续控制地下水补救
    • US5813798A
    • 1998-09-29
    • US829915
    • 1997-03-28
    • Greg Whiffen
    • Greg Whiffen
    • B09C1/00E03B3/06E02B13/00B01D1/00G06G7/57
    • B09C1/002B09C1/00E03B3/06
    • A piecewise continuous-time dynamic control method and apparatus for optimizing re-mediation of groundwater is disclosed. The piece-wise continuous control process is used to generate efficient designs for remediation systems based on differentiable groundwater models. The remediation strategies generated are characterized by piece-wise continuous functions of time which dictate the operation of remediation devices. The piece-wise continuous functions may change discontinuously at the end of each management period, or, optionally, a finite number of times during each management period. The duration and number of management periods covering a groundwater cleanup may be selected by the user of the invention to maximize the contamination removal efficiency and reflect the mechanical limitations of the specific remediation devices chosen. The continuous-time property of piece-wise continuous control requires simpler (usually sparse) derivatives of a groundwater model than the derivatives required by static and discrete-time control of groundwater remediation.
    • 公开了一种用于优化地下水再调解的分段连续动态控制方法和装置。 分段连续控制过程用于基于可微分的地下水模型为补救系统生成有效的设计。 生成的补救策略的特点是分段连续的时间功能,决定了修复设备的运行。 分段连续功能可能在每个管理周期结束时不连续地更改,或者可选地,在每个管理周期期间有限次。 覆盖地下水清理的管理期的持续时间和数量可以由本发明的用户选择以使污染物去除效率最大化并且反映所选择的具体修复设备的机械限制。 分段连续控制的连续时间属性要求比地下水修复的静态和离散时间控制所需的衍生物更简单(通常是稀疏的)地下水模型的衍生物。
    • 43. 发明授权
    • Detection of leaks in vessels
    • 检测船舶泄漏
    • US5675506A
    • 1997-10-07
    • US386962
    • 1995-02-10
    • Michael Savic
    • Michael Savic
    • F17D5/06G01M3/00G01M3/24G06G7/57
    • F17D5/06G01M3/007G01M3/24G01M3/243
    • An apparatus and process for determining the existence and location of a leak in a vessel such as a container or an above ground or underground pipe, comprises a plurality of remote acoustic transmission sensor units distributed along the pipe and each containing equipment for analyzing acoustic signals from the pipe. The equipment includes a mechanism for identifying acoustic features of the acoustic signals which distinguish the acoustic signals of a leak from ambient acoustic signals. A control unit is connected to each of the remote units and includes additional equipment for further analyzing the signals to determine the proximity of the signal to a particular remote unit and, using the amplitude of the signal and the transmission characteristics of the pipe, determining the location of the leak.
    • 用于确定诸如容器或地上或地下管道的容器中的泄漏的存在和位置的装置和过程包括沿管道分布的多个远程声学传播传感器单元和每个包含用于分析来自 管道。 该设备包括用于识别声信号的声学特征的机构,其将泄漏的声学信号与环境声学信号区分开。 控制单元连接到每个远程单元,并且包括用于进一步分析信号以确定信号到特定远程单元的接近度的附加设备,并且使用信号的幅度和管道的传输特性来确定 泄漏的位置。
    • 44. 发明授权
    • Fuel-gauging systems
    • 燃油计量系统
    • US5513527A
    • 1996-05-07
    • US433558
    • 1995-05-03
    • David M. Griffiths
    • David M. Griffiths
    • G01F23/00G01F23/26G01F23/296G01F17/00G06G7/57G08B21/00
    • G01F23/26G01F23/0069G01F23/0076G01F23/296
    • An ultrasonic fuel-gauging system for an aircraft with three fuel tanks has probes in each tank connected to dual-lane data concentrator circuits. The digital outputs from one lane of the data concentrator circuits are supplied to respective tank circuits, the outputs of which are connected to two input/output circuits. The outputs of the other lanes of the data concentrator circuits are connected directly to one or the other of the two input/output circuits. The tank circuits and input/output circuits are processors of identical construction programmed with different software. If a tank circuit or input/output circuit should fail, its function is taken over by reconfiguration of one of the remaining processors.
    • 用于具有三个燃料箱的飞机的超声燃料测量系统在每个罐中具有连接到双通道数据集中器电路的探针。 将数据集中器电路的一个通道的数字输出提供给相应的电路,其输出端连接到两个输入/输出电路。 数据集中器电路的其他通道的输出直接连接到两个输入/输出电路中的一个或另一个。 储罐电路和输入/输出电路是具有不同软件编程的相同结构的处理器。 如果储能电路或输入/输出电路出现故障,则通过重新配置其余的处理器来接管其功能。
    • 45. 发明授权
    • Dialysis machine having enhanced D/A resolution
    • 透析机具有增强的D / A分辨率
    • US4731731A
    • 1988-03-15
    • US704049
    • 1985-02-21
    • Michael J. Cochran
    • Michael J. Cochran
    • A61M1/16G06G7/57B01D13/00H03M1/18
    • A61M1/1656A61M1/1664
    • A dialysis machine has control circuit which detects changes in input water temperature and compensates the water heater. The control circuit detects changes in the conductivity of the dialysate concentrate and compensates the concentrate pump. Changes in supply voltage are detected and the outputs of the several sensors and the inputs to the pumps and heater comensated. The control circuit periodically calibrates the blood leak detector. In each of the feedback loops which service the heater and each of the pumps, the control circuit varies both the loop response time and the loop gain to compensate for changes in the dialysate flow rate. The resolution of the D/A converters which drive the pumps are enhanced by the control circuit by time modulating the LSB of the respective digital drive value. If any of the several sensed operating conditions varies significantly from the expected value, the control circuit terminates dialysis.
    • 透析机具有检测输入水温变化并补偿热水器的控制电路。 控制电路检测透析液浓缩物的电导率的变化并补偿浓缩泵。 检测到电源电压的变化,并将数个传感器的输出和泵和加热器的输入接通。 控制电路周期性地校准血液泄漏检测器。 在为加热器和每个泵服务的每个反馈回路中,控制电路改变环路响应时间和环路增益,以补偿透析液流量的变化。 驱动泵的D / A转换器的分辨率由控制电路通过对相应数字驱动值的LSB进行时间调制而增强。 如果几个检测到的操作条件中的任何一个与预期值显着变化,则控制电路终止透析。
    • 46. 发明授权
    • System and method for monitoring and maintaining concentrate material in
a fluid carrier
    • US4660152A
    • 1987-04-21
    • US621965
    • 1984-06-18
    • Robert A. DowningLorin K. Hansen
    • Robert A. DowningLorin K. Hansen
    • G01N21/59G03G13/10G03G15/10G03G15/11G05D21/00G05D21/02G06G7/57B67D5/08G03G15/00
    • G03G15/105G05D21/02Y10S222/01
    • A system is disclosed that monitors the concentration of material in a fluid carrier which includes means for circulating the fluid carrier within a substantially closed loop system and means for measuring the concentration of material carried in the fluid. The measuring means includes means to detect rapid changes in transmissivity of the fluid carrier, which are indicative of the presence of entrained air bubbles in the fluid carrier, so that measurements of material concentrate under such conditions may be ignored or rejected. Further, to ensure that an accurate measurement of concentrated material depletion is being observed, more than one consecutive measurement is made and validated before concentrate is finally added to the fluid carrier in the system. In the preferred embodiment, the determination of whether air bubbles may be entrained in the fluid carrier is accomplished by determining a disparity between two consecutively measured samples to have been greater than a predetermined value. If such a disparity exists, the measurement sampling rate is increased until the disparity between consecutively measured samples is again less than the predetermined value, at which time sampling is again performed at slower sampling rate. If a disparity exists between several consecutive samples and the disparity in each case remains below the predetermined value, the samples so observed are determined as valid and representative of continuous depletion of the concentrate material in the fluid carrier. When several of these consecutive and validated sample values exceeds a predetermined threshold and there has been no interruption in such sampling due to a disparity between samples greater than the predetermined value, an enablement will be provided to permit concentrate material to be added to the fluid carrier. The system of this invention has particular application to the monitoring the level of toner concentrate in a fluid carrier of fluid toner development system in an electrographic printer/plotter system or machine.
    • 47. 发明授权
    • Liquid chromatography controller
    • 液相色谱控制器
    • US4618935A
    • 1986-10-21
    • US568765
    • 1984-01-06
    • Arnold Schwartz
    • Arnold Schwartz
    • G01N30/34G06G7/57G01N31/00
    • G01N30/34
    • A new and improved controller for creating a linear gradient dual solvent flow pattern in a dual pump liquid chromatography system wherein one pump pumps one solvent and the other pump pumps the second solvent, the controller comprising a clock for producing a timing signal; digiswitches for providing first and second digital signals representative of initial and final values for one of two solvents; a difference circuit for producing a third digital signal representative of the difference between the initial and final values; a digiswitch for providing a fourth digital signal representative of the time duration of the linear gradient; a binary divider for regulating the timing signal to produce a signal proportional to the fourth digital signal; a binary rate multiplier for proportioning the regulated timing signal to the third digital signal; circuitry for producing a fifth digital signal from the proportional regulated timing signal, whereby the fifth digital signal represents the dividend of the third digital signal divided by the fourth digital signal; and circuitry for inputting signals to each of the pumps to set the flow rates thereof, said circuitry being regulated by said fifth digital signal.
    • 一种用于在双泵液相色谱系统中创建线性梯度双溶剂流动模式的新的和改进的控制器,其中一个泵泵送一个溶剂,另一个泵泵送第二溶剂,该控制器包括用于产生定时信号的时钟; 用于提供表示两种溶剂之一的初始值和最终值的第一和第二数字信号的开关; 用于产生表示初始值和最终值之间的差的第三数字信号的差分电路; 用于提供表示线性梯度的持续时间的第四数字信号的数字开关; 用于调节定时信号以产生与第四数字信号成比例的信号的二进制分频器; 用于将调节定时信号与第三数字信号成比例的二进制比率倍增器; 用于从所述比例调节定时信号产生第五数字信号的电路,由此所述第五数字信号表示所述第三数字信号除以第四数字信号的余数; 以及用于向每个泵输入信号以设定其流量的电路,所述电路由所述第五数字信号调节。