DE732046C - Accelerometer - Google Patents
AccelerometerInfo
- Publication number
- DE732046C DE732046C DEL96277D DEL0096277D DE732046C DE 732046 C DE732046 C DE 732046C DE L96277 D DEL96277 D DE L96277D DE L0096277 D DEL0096277 D DE L0096277D DE 732046 C DE732046 C DE 732046C
- Authority
- DE
- Germany
- Prior art keywords
- resistance
- change
- gas
- accelerometer
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/12—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by alteration of electrical resistance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
Beschleunigungsmesser Es ist bekannt, zum Messen von Druck-oder Druckänderungen Vorrichtungen zu b;enutzen, bei welchen der wechselnde Gasdruck in einer Meßkammer leine Änderung der Wärmeableitung und damit des Widerstandes elektrisch beheizter Drähte hervorruft, wobei die Widerstandsänderung ein Maß für die Druckänderung ist. Bei diesen Von-ichtungen werden größtenteils zwei nebeueinanderliegende Drähte verwendet, die - sich gegenseitig beeinflussen und in ihrer Wirkung unterstützen.Accelerometer It is known to measure pressure or pressure changes Devices to be used in which the changing gas pressure in a measuring chamber There is no change in the heat dissipation and thus the resistance of the electrically heated Causes wires, the change in resistance being a measure of the change in pressure. For the most part two wires lying next to each other are used in these directions, which - influence each other and support each other in their effect.
In einer anderen Vorrichtung sind nebeneinander {elektrisch geheizte Widerstände in einer gut wärmeleitenden Gehäuse angeordnet, tun damit Neigungswinkel zu messen. In another device are side by side {electrically heated Resistors arranged in a housing that conducts heat well, do so with angles of inclination to eat.
Die Erfindung bezieht sich auf Beschleunigungsmesser und ist gekennzeichnet durch die Verwendung einer gasgefüllten Glühlampe, deren Widerstandsänderung bei Beschleunigungen die Meßgröße liefert. The invention relates to accelerometers and is characterized through the use of a gas-filled incandescent lamp, the resistance change in Accelerations delivering the measured variable.
Wie Versuche ergeben haben, ändert sich der elektrische Widerstand eines in einem abgeschlossenen gasgefüllten Behälter angeordneten, von Meßstrom beheizten, temperaturabhängigen Widerstandsdrahtes, einer Anordnung also, die ihrer Form nach etwa einer elektrischen Glühlampe gleichkommt, wenn dieser Behälter in irgendeiner Weise beschleunigt bewegt wird. Im Ruhezustand bildet sich ein stationärer Konvektionsstrom der Gasmoleküle innerhalb des den beheizten Widerstandsdraht ,umschließlenden Behälters aus, dessen Größe und Richtung praktisch konstant ist und damit ein stationäres Wärmegleichgewicht zwischen dem Widerstandsdraht und dem Gasinbalt zur Ausbildung bringt. Wird nun der den Widerstandsdrabt enthaltende Behälter in einer beliebigen Richtung beschleunigt, so wird infolge der Trägheit der Gasmoleküle die Richtung und Größe des Konvektionsstromes geändert und damit das Wärmegleichgewicht innerhalb des Behälters gestört. Schaltet man den Widerstandsdraht und die zu seiner Beheizung dienende Stromquelle beispielsweise in einer Wheatstoneschen Brücke mit einem Meßinstrument zusammen so beobachtet man eine Änderung des Aus schlages am. Instrument, weiche durch die Änderung des Widerstandes mit der veränderten Temperatur he rvorgerufen. wird. Da es bekanntlich Widerstandsdrähte gibt die in einem gewissen Temperaturbereich eine außerordentlich steile Widlerstandscharakteristik haben reagiert die An ordnung bereits auf verhältnismäßig geringe Beschleunigungswerte. As tests have shown, the electrical resistance changes one arranged in a closed gas-filled container, of measuring current heated, temperature-dependent resistance wire, an arrangement that is theirs Shape is roughly equivalent to an electric incandescent lamp when this container is in accelerated in any way. In the resting state, a stationary one forms Convection flow of the gas molecules within the heated resistance wire Container, the size and direction of which is practically constant and thus a stationary one Thermal equilibrium between the resistance wire and the gas inbalt brings to training. If the container containing the resistance drab is now in accelerated in any direction, it is due to the inertia of the gas molecules the direction and size of the convection flow changed and with it the thermal equilibrium disturbed inside the container. One switches the resistance wire and that to his Power source used for heating, for example, in a Wheatstone bridge a measuring instrument together so you can observe a change in the deflection on. Instrument soft by changing the resistance with the changing temperature he called. will. As it is well known that there are resistance wires in a certain way Temperature range an extremely steep resistance characteristic have reacted the arrangement already on relatively low acceleration values.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL96277D DE732046C (en) | 1938-11-22 | 1938-11-22 | Accelerometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL96277D DE732046C (en) | 1938-11-22 | 1938-11-22 | Accelerometer |
Publications (1)
Publication Number | Publication Date |
---|---|
DE732046C true DE732046C (en) | 1943-02-19 |
Family
ID=7288311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL96277D Expired DE732046C (en) | 1938-11-22 | 1938-11-22 | Accelerometer |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE732046C (en) |
-
1938
- 1938-11-22 DE DEL96277D patent/DE732046C/en not_active Expired
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