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7600426 |
Calibration method and apparatus for a mobile device
The invention relates to a method and a mobile device. In accordance with the method—pressure data is measured, the pressure data is used as atmospheric-pressure data and/or for the definition of...
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7555947 |
Air pressure sensor
An air pressure sensor capable of measuring air pressure highly accurately with a simple configuration is provided. The sensor includes: a sealed case with a sealed space formed therein; a first...
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7493813 |
Electronic instrument movement/barometer
An instrument [particularly barometer ]movement includes a plurality of elements including a pressure transducer capable of sensing barometric pressure and converting the sensed pressure into...
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7429948 |
Device and method for calibrating and improving the accuracy of barometric altimeters with GPS-derived altitudes
In a combined GPS/altimeter device, the calibration and hence the accuracy of barometric altimeter measurements are enhanced with the aid of derived altitudes from a GPS. The device determines the...
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7424825 |
Barometric altimeter including a temperature compensation device
The present invention proposes a portable barometric altimeter ( 10 ) including a pressure sensor ( 14 ), a calculation unit ( 16 ) which determines an altitude value (H) as a function of the...
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7350414 |
Mechanical barometer
An analog pressure indicator assembly, particularly useful as a barometer, accurately indicates pressure or pressure changes using the fewest number of and/or least expensive components possible....
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7345956 |
Portable electronic device with analog display rate of climb indicator
A portable electronic device ( 1 ) is described, in particular of bracelet watch type, comprising at least first and second display members ( 8 and 9 ), means ( 23, 31 ) for making measurements...
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7299113 |
System and method for determining aircraft tapeline altitude
A method, apparatus, and computer program product for accurately determining aircraft altitude, impact pressure, and calibrated air speed are provided. The determined results may be used for...
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7242639 |
Altimeter watch
The invention concerns a method allowing an electronic watch to automatically exit an altimeter mode including the following steps: (a) entry into altimeter mode by activating the watch altimeter...
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7176811 |
Pressure altimeter electrical testing
A test apparatus and method of electrical testing especially useful for verifying normal performance of essential functions in an aircraft atmospheric pressure responsive auxiliary altimeter under...
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7145501 |
Methods and systems for measuring terrain height
An altitude measuring system is described that includes a radar altimeter configured to measure altitude and a digital terrain map database. The database includes data relating to terrain elevation...
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7095364 |
Altitude measurement system and associated methods
An altitude measuring system and method for aircraft is provided. The altitude measuring system includes altitude sensors for providing data to an altitude processing unit. The altitude processing...
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6761064 |
Movement-detecting altimeter
To provide a movement-detecting altimeter designed so as to be capable of avoiding excessive accumulation of errors. The movement-detecting altimeter has a movement dependent altitude updating unit...
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6684175 |
Display method of an altitude display apparatus for displaying absolute altitude
In order to reduce confusion about a displayed absolute altitude and to enhance reliability and correctness, the present invention provides a display method of an altitude display apparatus for...
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6678629 |
Portable altimeter and altitude computing method
A portable altimeter of the present invention is provided with a movement determining unit for determining whether or not the altimeter is at a standstill or moving by comparing an amount of change...
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6640165 |
Method and system of determining altitude of flying object
A method of determining an altitude of a flying object. A Blanchard altitude of a flying object is computed. A non-Blanchard reference altitude and a trajectory of the flying object are measured...
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6584839 |
Modular altimeter
An altimeter which contains within it means for storing the Static Source Error Correction (SSEC) for the aircraft. The altimeter includes means for downloading the SSEC and for transferring it to...
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6565992 |
Phosphorescent oxygen sensors
A pressure sensor comprising a stable polymer having a backbone containing nitrogen and one or more of sulfur or phosphorous, and including a phosphorescent dye agent.
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6530280 |
Hypsometer
A hypsometer for use to calibrate thermometers having 1) an elongated vessel for containment of a working fluid, 2) a heating element for heating the fluid to its boiling point, 3) a vapor jacket...
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6462703 |
Method and system for high precision altitude measurement over hostile terrain
A system and method for providing highly accurate measurements of the altitude above ground level (AGL) of an aircraft flying over local terrain. A current AGL altitude of the aircraft over local...
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6462665 |
Method and apparatus for sending a weather condition alert
A method and apparatus of an alert system for notifying subscribers of weather or hazardous conditions. A weather-tracking source or service broadcasts weather or hazardous conditions across the...
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6434485 |
GPS device with compass and altimeter and method for displaying navigation information
A portable, handheld electronic navigation device includes an altimeter, a compass, and a GPS unit. An internal memory stores cartographic data, for displaying the cartographic data on a display of...
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6266583 |
System and method for improving the accuracy of pressure altitude determinations in an inertial navigation system
A system and method for improving the accuracy of altitude determinations in an inertial navigation system. Pressure measurements available to the inertial navigation system are used to initially...
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6255953 |
Tornado warning system
A pager receiver based system provides a method and an apparatus for receiving and detecting a tornado alert from the National Weather Service, determining the region to which the alert applies,...
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6232882 |
Warning system and method for detection of tornadoes
To differentiate between lightning strikes and tornado generated electromagnetic signals, a tornado detection system and method is made up of RF receiving circuits which receive signals at two...
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H001937 |
Laser barometer
A pressure measuring instrument that utilizes the change of the refractive index of a gas as a function of pressure and the coherent nature of a laser light to determine the barometric pressure...
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6034608 |
Tornado alarm system
A tornado alarm that monitors humidity, static charge in the air and the barometric pressure. Nothing happens until the level of static electricity increases to a set amount over a stored base...
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5827973 |
Equipment for attaching a part on a substrate
A pressure sensor is gripped between attachment parts, and electrically connected to a substrate by means of a flat cable. A leg portion which is a part of attachment part is inserted to a...
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5686664 |
Atmospheric tide and air density detector
An atmospheric tide and air density detector. The detector includes a chamber having an inlet and an outlet. A barometer is positioned within the chamber. An impeller, driven by a motor, is...
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5519671 |
Electronic equipment with depth measuring function
A water detecting means 5 and an operation designating means for operating a depth measuring function means 6 are arranged. When the water detecting means 5 detects water, the depth measuring...
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5402116 |
Atmospheric pressure calibration systems and methods
Systems are provided to derive a value of barometric pressure at a defined location in the atmosphere at a computed geometric height. By using the geometric height in a look-up table of...
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5295085 |
Pressure measurement device with selective pressure threshold crossings accumulator
A pressure measurement device with a selective altitude threshold crossings accumulator and method therefor provides for selective accumulation of relative pressure thresholds. A pressure sensor...
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5224059 |
Device for measuring altitude and barometric pressure
A device for measuring altitude and barometric pressure having a barometric pressure sensor, an amplifying circuit for amplifying the output signal from the pressure sensor, an analog to digital...
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5191792 |
Instrument for indicating altitude or direction
A hand-held instrument adapted selectively to provide a sportsman, such as a mountain climber, with readily-readable indications of the existing altitude or direction. The instrument includes a...
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5178010 |
Continuous graphical display of barometric data
A continuous graphical display of barometric data includes an electronic trace of barometric pressure across a display in which the display including the trace, grid and axis labels are scrolled...
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5152179 |
Device for measuring variations in ambient pressure
There is provided an apparatus for measuring variations in pressure including a container for housing a volume of liquid and an indicator float to be movably supported by the liquid therein. The...
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5077906 |
Surveying rod leveling device
A surveying rod leveling device and method for checking the accuracy of the level attached to the surveying rod comprising an elongated vertical bracket mounted to a vertical surface, having a...
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5058427 |
Accumulating altimeter with ascent/descent accumulation thresholds
An accumulating altimeter includes a programmable accumulator which selectively accumulates altitude changes from a reference altitude in accordance with accumulation thresholds. Altitude changes...
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5048337 |
Hypsometer having controlled heating, particularly for use in metrological radio-sondes
The hypsometer comprises an open boiling vessel consisting of a vessel flask containing the measuring fluid and of a vessel neck attached to said vessel. An electrical heating resistor plunges into...
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5031160 |
Small-sized electronic device with depth gauge
A small electronic device having a depth gauge is provided. An electronic device includes a pressure sensor which produces a signal corresponding to a depth. A first memory stores decompression...
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5001929 |
Electronic altimeter
An altimeter instrument is provided with display means which is locked or unlocked as a function of the output of a sensor which indicates whether the instrument or the apparatus whose altitude the...
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4969358 |
Electronic altimeter/barometer
A combined altimeter/barometer instrument is provided with setting means which can be actuated in two different modes, i.e., in a pressure level setting mode so as to set the instrument to a known...
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4938062 |
Barometric meter
A barometric meter such as barometer or a barometric altimeter comprises a vacuum chamber having a movable portion which displaces in proportion to air pressure. An aperture plate for allowing a...
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4852262 |
Gauge for in situ measurement of borehole diameter
A gauge for measuring in situ the diameter of a borehole in salt or other ft creeping rock types is provided so that changes in borehole structure can be detected. The gauge comprises a cylindrical...
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4779461 |
Method of and apparatus for measuring and recording the drop height of a container in transit
Apparatus for measuring the drop height of a container by detecting changes in altitude pressure resulting from the drop of the container. The apparatus includes transducers for measuring absolute...
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4746225 |
Instrument assembly support
An instrument assembly for use with a wire rack. The assembly is constructed so that the case structure may be rotated closer to or further away from the base portion of the stand. The assembly may...
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4741213 |
Quartz-type gas pressure gauge
The present invention deals with a quartz-type gas pressure gauge which utilizes resonance of a quartz vibrator that changes depending upon the pressure, wherein the quartz vibrator is of the type...
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4724707 |
Measurement device for measuring of air pressure, particularly for recording air data in aircraft
The invention refers to a measurement device for measuring air pressure by means of a pressure sensor that can be excited to natural oscillations. In order to eliminate the influence of relative...
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4699004 |
Pressure sensing
A pressure sensing device for a body movable in a fluid in a direction transverse to the longitudinal axis of the body. A chamber is provided within the body and a plurality of bores extend...
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4638664 |
Quartz barometer
In a quartz barometer untilizing the temperature dependence of the resistance of a quartz oscillator at resonance, the present invention is directed to provide a circuit which compensates for the...
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