摘要:
The present invention is directed to a method and apparatus that involves improved characterization of an object based on its surface roughness and other unique features without having to necessarily define a fixed and predetermined region of interest. In accordance with one aspect, the present invention provides a method for characterizing an object based on a pattern of the object's surface roughness. The method comprises the steps of obtaining a unique image of a feature on the surface of the object, converting the image obtained into certain electrical signals and processing the electrical signals so they are associated with the object and thereby provide a characterization of the object that is used to generate a unique identifying signature for the object.
摘要:
The present invention is directed to a method and apparatus that involves improved characterization of an object based on its surface roughness and other unique features without having to necessarily define a fixed and predetermined region of interest. In accordance with one aspect, the present invention provides a method for characterizing an object based on a pattern of the object's surface roughness. The method comprises the steps of obtaining a unique image of a feature on the surface of the object, converting the image obtained into certain electrical signals and processing the electrical signals so they are associated with the object and thereby provide a characterization of the object that is used to generate a unique identifying signature for the object.
摘要:
The present invention is directed to a method and apparatus that involves improved characterization of an object based on its surface roughness and other unique features without having to necessarily define a fixed and predetermined region of interest. In accordance with one aspect, the present invention provides a method for characterizing an object based on a pattern of the object's surface roughness. The method comprises the steps of obtaining a unique image of a feature on the surface of the object, converting the image obtained into certain electrical signals and processing the electrical signals so they are associated with the object and thereby provide a characterization of the object that is used to generate a unique identifying signature for the object.
摘要:
A device and system for towing snow sleds either alone or with one or more riders along the surface of a snow cover slope to a higher position includes a tow cable extending continuously along a closed loop path between the starting position and the arriving position along the slope. Tow cable pulleys are located at the starting position and the arriving position upon which the cable is supported and driven. A drive motor is operatively connected to one of the cable pulleys and operating to rotatingly drive the pulley to drive the cable through the closed loop path. One or more tow hooks are connected in series at spaced intervals to the tow cable for conjoint movement therewith. Additional embodiments are disclosed.
摘要:
In a wave soldering apparatus including a station for forming a standing wave of foamed flux, a preheater station, and a standing wave of hot molten solder station, a flux removing apparatus for reducing the thickness of flux on a coated printed circuit board includes an apertured pipe for gently blowing a plurality of streams of air against the foam coated board, the streams acting effectively as a continuous linear stream of air. The airstreams also blow the foamed flux into apertures in the printed circuit board.
摘要:
Stabilized structures and fills are disclosed relating to erosion control that include multiple interlock units and fibers that interact with those interlock units. Combinations of interlock units, fibers, and other optional fill materials may be used to stabilize a vulnerable earthen slope. Various fiber tensions act on the interlock units tending to hold the interlock units together and tending to hold the interlock units in position on the slope.
摘要:
A method and apparatus allocates a first predetermined plurality of frame time slots (102) to a first protocol, and allocates a second predetermined plurality of frame time slots (102) to a second protocol having a base frame management capability. The base frame management capability is applied such that portable selective call receiving devices (10) utilizing the second protocol normally perform battery saving throughout the first predetermined plurality of frame time slots (102).
摘要:
A toll for melting solder on the contacts of a surface mounted electronic component and on the corresponding contacts of a printed circuit substrate to which it is to be soldered or from which it is to be de-soldered. The tool includes a conduit for conducting hot gas to the contacts. A diverter located in the interior of the conduit deflects hot gas away from the top of the surface mounted component and confines the hot gas to the periphery of the component.
摘要:
A device and system for towing snow sleds either alone or with one or more riders along the surface of a snow cover slope to a higher position includes a tow cable extending continuously along a closed loop path between the starting position and the arriving position along the slope. Tow cable pulleys are located at the starting position and the arriving position upon which the cable is supported and driven. A drive motor is operatively connected to one of the cable pulleys and operating to rotatingly drive the pulley to drive the cable through the closed loop path. One or more tow hooks are connected in series at spaced intervals to the tow cable for conjoint movement therewith. Additional embodiments are disclosed.
摘要:
Leadless chip carriers (LCCs) are pretinned using wave soldering equipment. A magnetic fixture having a coating of material which is non-solderable provides a plurality of LCC retention locations. The LCC retention locations are configured to ensure free solder-wave access to all edges of the chip carriers disposed thereon and to substantially prevent the dislodging of the chip carriers by the forces of the solder wave.