摘要:
Electronic device enclosures providing improved heat dissipation are described herein. An example enclosure for holding an electronic circuit board includes a housing having a first portion coupled to a second portion to form a cavity to hold the electronic circuit board. Each of the first and second portions comprises openings to direct convention airflow across opposing faces of the electronic circuit board at the same time. A baffle is coupled to the housing to substantially visually obscure the openings and to define a gap between the housing and the baffle to direct the convection airflow across the opposing faces of the electronic circuit board.
摘要:
Records in databases or unstructured files are enriched with metadata and are indexed for retrieval by a search engine. In response to a search request, a graphical user interface (GUI) control based on the metadata associated with the search hits is constructed and displayed with the search results in a standard view. Selection of a metadata value via the GUI control filters the previously matched records down to those matching the value selected via the GUI control. The metadata in the search results is arranged in a tabular view which is embedded in the display of search results and rendered invisible until selected by the user. Reports can be constructed from an identifier each returned record set for presenting, analyzing and modifying the data, and for generating further reports.
摘要:
An antenna for receiving a transmitted signal with signal receiving components including a housing disposed about signal-receiving components. The housing includes a first housing portion forming a first side of the housing, the first housing portion including first and second opposing edge portions, third edge portion extending between the first and second opposing edge portions, and a second housing portion forming a second side of the housing, the second housing portion including fourth and fifth opposing edge portions, and a sixth edge portion extending between the fourth and fifth opposing edge portions, wherein the first housing portion is configured to be coupled to the second housing portion in such a manner that the first and fourth edge portions engage, the second and fifth edge portions engage, and the third and sixth edge portions cooperatively form an elongated groove configured to receive a signal line.
摘要:
A method and apparatus for guiding a vehicle to intercept a target is described. The method iteratively estimates a time-to-go until target intercept and modifies an acceleration command based upon the revised time-to-go estimate. The time-to-go estimate depends upon the position, the velocity, and the actual or real time acceleration of both the vehicle and the target. By more accurately estimating the time-to-go, the method is especially useful for applications employing a warhead designed to detonate in close proximity to the target. The method may also be used in vehicle accident avoidance and vehicle guidance applications.
摘要:
An apparatus and method to use the temperature of a transmitting radio to prevent transmission of radio waves outside of an assigned frequency band. More specifically, if a transmitter exceeds a specified temperature the transmitter will be automatically disabled to prevent temperature caused frequency shifts outside the approved frequency transmission band for the transmitter. The transmitter has a temperature sensor that senses temperature and compare the operating temperature against a preselected temperature limit. It the operating temperature either is too hot or too cold the transmitter will be disabled and will not transmit until the temperature falls or rises to an acceptable level.
摘要:
An antenna for receiving a transmitted signal with signal receiving components including a housing disposed about signal-receiving components. The housing includes a first housing portion forming a first side of the housing, the first housing portion including first and second opposing edge portions, third edge portion extending between the first and second opposing edge portions, and a second housing portion forming a second side of the housing, the second housing portion including fourth and fifth opposing edge portions, and a sixth edge portion extending between the fourth and fifth opposing edge portions, wherein the first housing portion is configured to be coupled to the second housing portion in such a manner that the first and fourth edge portions engage, the second and fifth edge portions engage, and the third and sixth edge portions cooperatively form an elongated groove configured to receive a signal line.