Abstract: A resource usage graphical overlay for a navigation system is disclosed. For each such resource, a resource exhaustion distance is computed, based on the consumption or lapse rate of the resource, and the vehicle speed. This resource exhaustion distance is scaled for the interactive map display and rendered as a service area on the interactive map so a user can determine what destinations are reachable before resources are completely depleted.

Abstract: A system and method for generating a number of differing metrics is described and taught. Generally, the metrics are related but not limited to aeronautics and flying, and may be used for a variety of fields and purposes. The generated electrical signal produced by a transducer type sensor is typically but not limited to a time based metric that can be readily converted to and from a number of statistical measures. Thus, from the same electrical signal gathered by the system, metrics relating to weight, pressure, volume, etc. can be calculated and displayed singularly or simultaneously to provide a calculation specific to that industry such as time remaining. Some of the metric values may be stored on a memory for use at a later time. Additionally, a displayed metric that falls outside of a generally accepted range for that metric may generate an audible and/or visual alarm.

Abstract: A resource usage graphical overlay for a navigation system is disclosed. For each such resource, a resource exhaustion distance is computed, based on the consumption or lapse rate of the resource, and the vehicle speed. This resource exhaustion distance is scaled for the interactive map display and rendered as a service area on the interactive map so a user can determine what destinations are reachable before resources are completely depleted.

Abstract: A system for identifying the time remaining for a bottled gas supply to lapse. Such bottled gas supplies include those used for gas grilles, scuba, nitrogen for electron microscopes, and any other environment in which a bottled gas is used. The system reads the pressure and optionally the temperature of the gas container, the readings of which are read by a microprocessor, optionally first pre-processed in a conversion module, and converted into a display for the user identifying the time during which the gas contents remaining will last. In various systems, it may be desirable to program the microprocessor, such as with input from a keyboard and/or cd-rom, with parameters regards specifics of the gas or the container, or to simply processing by assuming a certain temperate correlation and thereby eliminate the need for a temperature transducer.

Abstract: A system for identifying the time remaining for a bottled gas supply to lapse. Such bottled gas supplies include those used for gas grilles, scuba, nitrogen for electron microscopes, and any other environment in which a bottled gas is used. The system reads the pressure and optionally the temperature of the gas container, the readings of which are read by a microprocessor, optionally first pre-processed in a conversion module, and converted into a display for the user identifying the time during which the gas contents remaining will last. In various systems, it may be desirable to program the microprocessor, such as with input from a keyboard and/or cd-rom, with parameters regards specifics of the gas or the container, or to simply processing by assuming a certain temperate correlation and thereby elinimate the need for a temperature transducer.

Abstract: A system useable in a jet aircraft having installed therein a pressurized oxygen supply which feeds oxygen into the interior of the plane when it flies at high cabin altitudes, the system indicating the changing status of the supply as oxygen is drained therefrom. The system includes a pressure transducer coupled to the supply and means associated with the transducer to determine the lapse rate at which the pressure of the supply is reduced as oxygen is drained therefrom to yield a first signal representing this pressure lapse rate, and to concurrently determine the lapse rate at which the number of liters of oxygen in the supply is reduced as oxygen is drained therefrom to yield a second signal representing the liter lapse rate. These signals are applied to a microprocessor in whose data base is entered the total oxygen inventory of the supply and the oxygen demand of the plane in which the supply is installed.

Abstract: A system useable in a jet aircraft having installed therein a pressurized oxygen supply which feeds oxygen into the interior of the plane when it flies at high cabin altitudes, the system indicating the changing status of the supply as oxygen is drained therefrom. The system includes a pressure transducer coupled to the supply and means associated with the transducer to determine the lapse rate at which the pressure of the supply is reduced as oxygen is drained therefrom to yield a first signal representing this pressure lapse rate, and to concurrently determine the lapse rate at which the number of liters of oxygen in the supply is reduced as oxygen is drained therefrom to yield a second signal representing the liter lapse rate. These signals are applied to a microprocessor in whose data base is entered the total oxygen inventory of the supply and the oxygen demand of the plane in which the supply is installed.