摘要:
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 pressure (P) measured by the sensor (14) and as a function of a reference temperature (T0) corresponding to an estimate of the temperature of the air mass at sea level, and a time measuring unit (18) that supplies calendar data (D), characterized in that it includes a correction circuit (32), which selects the reference temperature value (T0) from among a series of values (TS) contained in a database stored in the altimeter (10), as a function of the date (D) and as a function of a predefined climate value (C). The invention also proposes a method of determining altitude (H).
摘要翻译:本发明提出了一种便携式气压高度计(10),包括压力传感器(14),计算单元(16),其根据由传感器(14)测量的压力(P)确定高度值(H);以及 作为与海平面上的空气质量的估计值相对应的参考温度(T 0> 0)的函数,以及提供日历数据(D)的时间测量单元(18),其特征在于 因为它包括一个校正电路(32),该校正电路从包含在存储的数据库中的一系列值(T S S S S S S)中选择参考温度值(T SUB> 0 SUB>) 在高度计(10)中,作为日期(D)的函数和作为预定气候值(C)的函数。 本发明还提出了一种确定高度(H)的方法。
摘要:
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 module; (b) using a pressure sensor of the watch to measure at least one first pressure value used to calculate a first altitude value; (c) using the pressure sensor to measure at least one second pressure value used to calculate a second altitude value; (d) comparing the difference between said first and second pressure or altitude values to a determined pressure or altitude variation threshold using a variation detector of the altimeter module; (e) automatic exit from the altimeter mode when the result of the comparison is higher than the determined pressure or altitude variation threshold and stopping the display of altitude values by the analogue display means.
摘要:
An apparatus is provided for indicating the presence of pressure within a collection chamber of a device such as a chest drainage device. The apparatus includes a bladder configured to be positioned within the collection chamber or within another chamber in fluid flow communication with the collection chamber. The bladder has a concavity formed therein and configured to contract or expand in response to pressure in the collection chamber. The apparatus also includes surfaces associated with the bladder that are configured to move with respect to one another upon contraction or expansion of the concavity of the bladder, thereby indicating pressure within the collection chamber.
摘要:
A meter for divers which records and displays depth and elapsed time of dive information in LCD format including a microprocessor for recording and displaying essential dive information, a sensor, responsive to ambient pressure and variations in such pressure, and a direct digital input and tracking system for transmitting sensed information directly to the microprocessor.
摘要:
A SERVOED ALTITUDE INDICATOR WITH MEANS FOR CORRECTING THE ALTITUDE INDICATION AS A FUNCTION OF LOCAL BAROMETRIC PRESSURE. THE CORRECTION FACTOR IS GENERATED BY A PAIR OF ECCENTRIC GEARS WHICH APPROXIMATE AN EQUATION OF THE FORM
WHERE K1, K2, AND K3 ARE CONSTANTS, $H IS THE ALTITUDE CORRECTION IN FEET, AND P IS THE LOCAL BAROMETRIC PRESSURE IN INCHES OF MERCURY.