摘要:
A system is disclosed for providing electrical power responsive to solar energy. The system includes a Si cell, an AlGaAs cell, and a Ge cell. The Si cell is for providing electrical power responsive to solar energy within a first frequency range. The AlGaAs cell is coupled to a first side of the Si cell, and is for providing electrical power responsive to solar energy within a second frequency range. The Ge cell is coupled to a second side of the Si cell, and the Ge cell provides electrical power responsive to solar energy within a third frequency range.
摘要:
A SiGe or Ge structure comprises a substrate and a SiGe or Ge layer that is formed on a first surface of the substrate. A silicidation or germanide layer is formed on a second surface of the substrate so to increase the tensile strain of the SiGe or Ge layer on the first surface.
摘要:
An adaptive region system can include an adaptive region module and a display module. The adaptive region module can include a mini region button panel module capable of generating a mini region button panel having multiple mini region buttons, a view panel module capable of generating a view panel having multiple view buttons, and a region panel module capable of generating a region panel having multiple mini regions. The display module can visually display the mini region button panel, the view panel, and the region panel.
摘要:
A portable articulated arm coordinate measuring machine (AACMM) is provided. The AACMM includes a manually positionable articulated arm having opposed first and second ends. The arm includes a plurality of connected arm segments, each of the arm segments including at least one position transducer for producing a position signal. A measurement device is attached to a first end of the AACMM. An electronic circuit is provided for receiving the position signals from the transducers and for providing data corresponding to a position of the measurement device. A light source is coupled to the arm and disposed to emit light adjacent the measurement device.
摘要:
The present invention involves a dynamic brake for use in a peristaltic (i.e., roller) pump. The dynamic brake avoids backlash, due to counter rotation. In addition, it does not preclude the option of hand operating the roller pump. This is achieved by initiating the braking operation after the roller pump set-point has been set to zero and only after the roller pump has decelerated below a predefined speed (e.g., 20 rpm). In addition, the braking operation is activated for only a very brief period of time (i.e., a period of time required for the pressure in the roller pump fluid conduit to subside).
摘要:
A portable coordinate measurement machine (CMM) is disclosed. The CMM may include a manually positionable articulated arm having opposed first and second ends and a measurement probe attached to the first end articulated arm. The arm may include a plurality of jointed arm segments. Each arm segment may include at least one position transducer for producing a position signal. The CMM may also include an electronic circuit that receives the position signals from the transducers and provides a digital coordinate corresponding to the position of the probe in a selected volume. At least one of the arm segments may be non-linear along its length.
摘要:
An improved intensity-encoded fiber optic sensor incorporating novel drift correction and filtering means is disclosed. The first embodiments of the invention relate to means for removing unwanted higher-order core and cladding modes from an intensity-encoded signal in an optical fiber using mode strippers and mode filters located strategically at various points in the sensing system. The second set of improvements in the invention relate to an improved technique for long-term temporal drift cancellation in a fiber optic pressure sensor by periodically applying pressure to the sensor tip in order to ascertain the measured voltage at which the sensor diaphragm contacts other elements of the sensor. This measured voltage is subtracted from an initial calibration voltage, and the result is applied to the measured signal as a constant correction term.
摘要:
A portable articulated arm coordinate measuring machine (AACMM) is provided. The AACMM includes a manually positionable articulated arm having opposed first and second ends. The arm includes a plurality of connected arm segments, each of the arm segments including at least one position transducer for producing a position signal. A measurement device is attached to a first end of the AACMM. An electronic circuit is provided for receiving the position signals from the transducers and for providing data corresponding to a position of the measurement device. A light source is coupled to the arm and disposed to emit light adjacent the measurement device.
摘要:
A rotary valve unit is provided for blending fluid sources to regulate a temperature of fluid flowing to a heat exchange device in an extracorporeal blood perfusion circuit. A valve body includes a valve chamber having a first inlet port, a second inlet port, a first outlet port, and a second outlet port. A wedged-shaped rotary valve is disposed within the valve chamber and is rotatable within the valve chamber for controlling a blending of the cold fluid entering the fluid chamber from the first inlet port and the return fluid entering the fluid chamber from the second inlet port to regulate the desired temperature of fluid provided to the heat exchanger. The wedge-shaped rotary valve is positionable to provide either only cold fluid to the first outlet port, only return fluid to the first outlet port, or blending of the cold fluid and return fluid to the first outlet port.