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公开(公告)号：US5123495A
公开(公告)日：1992-06-23
申请号：US440054
申请日：1989-11-21
CPC分类号： A61G5/061 , A61G5/066 , B62D55/075 , B66B9/08 , A61G2203/42 , A61G2203/44 , A61G5/107 , A61G5/1075 , Y10S180/907 , Y10S280/10 , Y10S297/04
摘要： The present invention provides a sensor for detecting the angle of an incline, such as a staircase, before it is reached by the wheelchair. A control signal is provided to a motor for tilting the seat to cause the seat to be tilted to a predetermined minimum safe angle before the wheelchair reaches the staircase. The minimum safe angle is an angle of tilt at which the wheelchair will not roll over if the tilting mechanism should fail to completely rotate the seat to a horizontal position and as the stairs are descended. The minimum safe angle is determined by the position of the center of gravity of the wheelchair which is affected by the users weight. If the seat does not achieve this minimum tilt, the wheelchair is prevented from going over the stairs.
摘要翻译： 本发明提供了一种用于在轮椅到达之前检测诸如楼梯的倾斜角度的传感器。 控制信号被提供给电动机，用于倾斜座椅，以使座椅在轮椅到达楼梯之前倾斜到预定的最小安全角度。 如果倾斜机构不能将座椅完全旋转到水平位置和楼梯下降，则最小安全角度是轮椅不会翻转的倾斜角度。 最小安全角度由轮椅的重心位置决定，受到用户重量的影响。 如果座椅没有达到这个最小倾角，轮椅就不会超过楼梯。
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2.发明授权
公开(公告)号：US4940945A
公开(公告)日：1990-07-10
申请号：US116015
申请日：1987-11-02
IPC分类号： G01N27/28 , G01N27/403 , G01N33/487 , G01N33/49
CPC分类号： G01N33/4925
摘要： An interface circuit for use in a portable apparatus for measuring the electrochemical characteristics of a sample is disclosed. A disposable cartridge, including a plurality of interconnected flow chambers, houses a printed circuit board substrate upon which reference and indicating electrodes are formed. The electrodes are employed in the presence of chemical reagents to aid in the electrochemical determination of a sample undergoing analysis. Such a system provides a high source impedance signal. Interface circuitry is provided between the electrodes and measuring electronics which causes a controllable current loop to be formed through the physical contacts points between the electrodes and the measuring electronics so that low ohmic contact is established. The control circuitry for the current loop is isolated from the measuring circuitry so that measurements taken are not influenced by the current loop formation.
摘要翻译： 公开了一种用于测量样品的电化学特性的便携式设备中的接口电路。 包括多个互连的流动室的一次性盒子容纳印刷电路板基板，在其上形成参考电极和指示电极。 在存在化学试剂的情况下使用电极来帮助进行分析的样品的电化学测定。 这样的系统提供高的源阻抗信号。 在电极和测量电子器件之间提供接口电路，其通过电极和测量电子器件之间的物理接触点形成可控电流环，从而建立低欧姆接触。 用于电流回路的控制电路与测量电路隔离，因此所采取的测量不受电流环形成的影响。
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公开(公告)号：US5648708A
公开(公告)日：1997-07-15
申请号：US444458
申请日：1995-05-19
CPC分类号： G01L5/161 , Y10S180/907
摘要： An apparatus and method that allows a user to exert a force to control a motive machine. The exerted force is transferred by a force transferring means to force sensors which detect the amount and direction in which the force is exerted. The force sensors convert the applied force into an electrical signal which is used to control the motive features of a machine.
摘要翻译： 允许用户施加力以控制动力机器的装置和方法。 施加的力通过力传递装置传递，以强制检测施加力的量和方向的传感器。 力传感器将施加的力转换成用于控制机器的动力特征的电信号。
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4.发明授权
公开(公告)号：US5033000A
公开(公告)日：1991-07-16
申请号：US204455
申请日：1988-06-09
CPC分类号： H02P5/68 , B60L11/1805 , Y02T10/642 , Y02T10/7005 , Y02T10/7258 , Y10S180/907
摘要： A motorized personal transport vehicle (PTV) with a removable, programmable memory which contains both a key code to enable only an authorized user to operate the PTV and contains constants for use in an algorithm which operates the PTV in accordance with a prescription for that particular user's needs. Control signals from an input, such as a joystick, are modified by the algorithm in accordance with the prescription for a particular user. This prescription is stored in the programmable memory and loaded into the computer when the memory is inserted. The key code in the memory can allow various levels of access, with access for a particular user, a particular group, physician access and technician access. In a preferred embodiment, an electrically erasable programamble read only memory (EEPROM) is used as the memory key. Two processors are used, a first control processor for operating the algorithm and controlling the PTV motors and a second command processor for controlling a display panel, receiving the inputs and modifying the inputs in accordance with a prescription. The modifications performed in the command processor are the filtering of the input signals and the control of acceleration and deceleration. A display has an icon in the shape of a wheelchair. The status of the PTV for its operating modes is indicated by different elements of the icon which light up to indicate a particular status. For instance, a pair of downward directed eyes indicate that the ultrasonic drop off sensors are active.
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公开(公告)号：US5002397A
公开(公告)日：1991-03-26
申请号：US421263
申请日：1989-10-16
CPC分类号： G01N21/31 , G01N2021/3196 , G01N21/85 , G01N21/94
摘要： A Method and Apparatus for identifying and distinguishing fluids and for recognizing contamination of a fluid, which method and apparatus utilizes spectrographic analysis of control samples of known fluids and then spectrographic analysis of unknown fluids to generate optical signatures, finger prints and/or profiles of data and processed data relating to the relative intensities of light at selected wavelengths; and then, through comparison of the various signatures, fingerprints and/or profiles, provides determinative information as to contamination or non-contamination of the unknown fluids; after which appropriate operation control is effected and/or exercised.
摘要翻译： 一种用于识别和区分流体并识别流体污染的方法和装置，该方法和装置利用已知流体的对照样品的光谱分析，然后对未知流体进行光谱分析以产生光学特征，指纹和/或数据分布 并处理与所选波长的光的相对强度有关的数据; 然后，通过比较各种签名，指纹和/或轮廓，提供关于未知流体的污染或不污染的确定性信息; 之后进行和/或行使适当的操作控制。
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公开(公告)号：US5274311A
公开(公告)日：1993-12-28
申请号：US792217
申请日：1991-11-13
申请人： Douglas J. Littlejohn , John Golini
发明人： Douglas J. Littlejohn , John Golini
IPC分类号： G05B19/414 , H04J3/00
CPC分类号： G05B19/4142 , G05B2219/31094 , G05B2219/33126 , G05B2219/33144 , G05B2219/33214 , G05B2219/33228 , G05B2219/33229 , G05B2219/34208 , Y02P90/18
摘要： The present invention imports network communication concepts into a motor and/or motion control system. The motor and/or motion control system is divided into various modules. A preferred configuration includes a motor drive control module, a user command module, and a master control module. The modules are interconnected by a simple hardware bus, such as an RS-485 bus. Communication between the modules is accomplished using a time division protocol.
摘要翻译： 本发明将网络通信概念引入到电动机和/或运动控制系统中。 马达和/或运动控制系统被分成各种模块。 优选的配置包括电机驱动控制模块，用户命令模块和主控模块。 模块通过简单的硬件总线（如RS-485总线）进行互连。 使用时分协议实现模块之间的通信。
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公开(公告)号：US5248007A
公开(公告)日：1993-09-28
申请号：US604652
申请日：1990-11-01
CPC分类号： A61G5/061 , A61G5/066 , A61G2203/14 , A61G2203/42 , A61G2203/44 , A61G5/107 , A61G5/1072 , A61G5/1075 , Y10S180/907 , Y10S280/10
摘要： An electronic control system for a stair climbing vehicle, such as a wheelchair is disclosed. Front and back sensors are provided for detecting a stairway or slope. The electronic control system determines from the sensor data whether the slope has an acceptable incline for traversing. If it is not acceptable, the vehicle will be prevented from entering onto the stairway or slope. A seat for a user is tilted in accordance with electronic controls to keep the user approximately vertical with respect to gravity as the vehicle traverses the stairs. The allowed operation of the vehicle is controlled via parameters which can be changed by removable memory which configures the vehicle for a particular user or group of users.
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公开(公告)号：US4998824A
公开(公告)日：1991-03-12
申请号：US363049
申请日：1989-06-08
CPC分类号： G01N21/31 , G01N2021/3196 , G01N21/85 , G01N21/94
摘要： A method and apparatus for identifying and distinguishing fluids and for recognizing contamination of a fluid, which method and apparatus utilizes spectrographic analysis of control samples of known fluids and then spectrographic analysis of unknown fluids to generate optical signatures, finger prints and/or profiles of data and processed data relating to the relative intensities of light at selected wavelengths; and then, through comparison of the various signatures, fingerprints and/or profiles, provides determinative information as to contamination or non-contamination of the unknown fluids; after which appropriate operation control is effected and/or exercised.
摘要翻译： 一种用于识别和区分流体并识别流体污染的方法和装置，该方法和装置利用已知流体的对照样品的光谱分析，然后对未知流体进行光谱分析以产生光学特征，指纹和/或数据分布 并处理与所选波长的光的相对强度有关的数据; 然后，通过比较各种签名，指纹和/或轮廓，提供关于未知流体的污染或不污染的确定性信息; 之后进行和/或行使适当的操作控制。
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公开(公告)号：US4929426A
公开(公告)日：1990-05-29
申请号：US266474
申请日：1988-11-02
申请人： Balazs I. Bodai , Michael D. Grandon , Scott J. Gilbert , Douglas J. Littlejohn , Kyle E. Lemons , Richard L. Fellows , Michael R. Barry , Michael D. Delapp
发明人： Balazs I. Bodai , Michael D. Grandon , Scott J. Gilbert , Douglas J. Littlejohn , Kyle E. Lemons , Richard L. Fellows , Michael R. Barry , Michael D. Delapp
IPC分类号： G01N33/487 , G01N33/49
CPC分类号： G01N33/4925
摘要： A portable apparatus for measuring the electrochemical characteristics of a sample is disclosed. A disposable cartridge, including a plurality of interconnected flow chambers, houses a printed circuit board substrate upon which reference and indicating electrodes are formed. The electrodes are employed in the presence of chemical reagents to aid in the electrochemical determination of a sample undergoing analysis. A thermal sensing element is in close proximity to the electrodes to permit the correction of the measurement for variations in temperature. After a pH value has been determined, the used cartridge can be mechanically ejected thus eliminating user exposure to the blood sample being measured. In this way, the pH of a blood sample can be determined quickly, effectively, inexpensively and with a minimum amount of sample and reagent preparation.
摘要翻译： 公开了一种用于测量样品的电化学特性的便携式设备。 包括多个互连的流动室的一次性盒子容纳印刷电路板基板，在其上形成参考电极和指示电极。 在存在化学试剂的情况下使用电极来帮助进行分析的样品的电化学测定。 热敏元件靠近电极，以允许校正温度变化的测量。 在确定pH值之后，可以机械地喷射用过的药筒，从而消除用户暴露于被测血液样品。 以这种方式，可以快速，有效地，低成本地且以最少量的样品和试剂制备来测定血液样品的pH。
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