摘要:
A digital subscriber controller having a number of analog ports and digital ports which can be programmed via an external microprocessor to establish time-division multiplexed bidirectional data paths between three subscriber-selected ports designated as "sources" and three subscriber-selected ports designated as "destinations". Among the ports is a line-interface port having two 64 kilobit-per-second voice/data channels and a 16 kilobit-per-second data control channel. Among the digital ports is a three-channel serial interface port and a two-channel microprocessor interface port. An analog port is also provided at which a variety of audio transducers may be connected. The controller includes a line interface unit, a data link controller which processes data channel information present at the line interface unit, a main audio processor, a microprocessor interface, and a multiplexer which establishes the data paths selected by the subscriber.
摘要:
A multiplexer for use in a digital subscriber controller having a number of analog ports and digital ports which can be programmed via an external microprocessor to establish time-division multiplexed bidirectional data paths between three subscriber-selected ports designated as "sources" and three subscriber-selected ports designated as "destinations". Among the ports is a line-interface port having two 64 kilobit-per-second channels on which analog/digital data is received from and transmitted onto the network transmission line. Among the digital ports is a three-channel serial port and a two-channel microprocessor interface port. An analog port is also provided at which a variety of audio transducers may be connected. The data-routing multiplexer consists of three sections, each comprising a plurality of registers connected to a single internal bus on which time-division-multiplexed signals are generated and received by particular subscriber-selected registers, each register within a section serving as either a generator or a receiver for the internal bus for a particular digital channel. An extension of the internal bus is connected to the analog port. A set of three control registers stores the subscriber-selected sources and destinations. Control signals are generated therefrom which affect the subscriber-selected interconnection of registers within the data-routing multiplexer with the internal bus. The multiplexer facilitates maintenance and testing of the digital subscriber controller by permitting a loopback path to be established for a device connected to a port by simply designating a path having that port as both its source and destination.
摘要:
In an automatic vehicle position control system, such as a satellite-based agricultural implement steering system, the satellite-based steering information is adjusted with information obtained from one or more path sensors to facilitate the automatic nudging of the vehicle to take account of inaccurate tracking of the agricultural implement relative to its tractor, terrain variations, and inaccuracies in the satellite-based steering system.
摘要:
Embodiments of the present invention recite a method and system for controlling steering dead band in a mobile machine. In one embodiment, a first dead band value for actuating a steering mechanism in a first direction is determined. Then, a second dead band value for actuating the steering mechanism in a second direction is determined. The first dead band value and the second dead band value are then stored as discrete values.
摘要:
A method and apparatus for a guidance system that gives a farmer a choice of different approaches to coping with the problem of compaction caused by vehicular traffic are disclosed.
摘要:
A method for approximating signals having sinusoidal waveforms with signals having trapezoidal waveforms, and a circuit for generating digital dual-tone multi-frequency (DTMF) dialing signals. The trapezoidal waveforms have sloped portions each equal in duration to one third of a period, and flat portions each equal in duration to one sixth of the period. DTMF dialing signals are generated by forming two such trapezoidal waveforms. The circuit forms trapezoidal waveforms by a computational technique. A periodic triangular waveform is first formed by repetitiously adding and subtracting an incremental value at a succession of time intervals. Then, the peaks of the triangular waveform are truncated to form the trapezoidal waveform.
摘要:
A crop yield per location measurer is disclosed. In general, the crop yield measurer includes a crop collector for a field of crops. The crop collector includes a navigation satellite system location determiner to determine location information at periodic times during a crop collection process. The crop collector also includes a weighing mechanism to determine a weight of collected crops at the periodic times during the crop collection process. In addition, a database is used for storing the location information and the weight at the periodic times during the crop collection process. A crop yield overview generator is then utilized to provide a user accessible crop yield per location overview for the field of crops based on the information stored at the database.
摘要:
A method of automatic obstacle location mapping comprises receiving an indication of a feature to be identified in a defined area. An instance of the feature is found within an image. A report is then generated conveying the location of said feature.
摘要:
Embodiments of the present invention recite a motor assembly comprising a lower motor mount and an upper motor mount. The lower motor mount is mechanically coupled with a steering column of a mobile machine. The upper motor mount is coupled with the lower motor mount and with a drive motor. The upper motor mount maintains pressure when in a first position such that a drive wheel coupled with the drive motor stays in contact with a steering wheel of a vehicle of a mobile machine. When the upper motor mount is locked in a second position, the drive wheel is kept away from the steering wheel of the mobile machine.
摘要:
A moisture content sensing system is described comprising a collar mechanically coupled with a clean grain transport system. An extendable support extends through the collar and has an extendable capacitive sensor element disposed at one end. The extendable support is configured to be located at a first position in which the extendable capacitive sensor element is disposed adjacent to clean grain conveyed by the clean grain transport system and moved to a second position wherein the extendable capacitive sensor element is disposed at least partially within the clean grain of the clean grain transport system.