DE2137188A1 - BAROMETER, IN PARTICULAR FOR RADIO WEATHER PROBES - Google Patents

BAROMETER, IN PARTICULAR FOR RADIO WEATHER PROBES

Info

Publication number
DE2137188A1
DE2137188A1 DE19712137188 DE2137188A DE2137188A1 DE 2137188 A1 DE2137188 A1 DE 2137188A1 DE 19712137188 DE19712137188 DE 19712137188 DE 2137188 A DE2137188 A DE 2137188A DE 2137188 A1 DE2137188 A1 DE 2137188A1
Authority
DE
Germany
Prior art keywords
barometer
deflection
probes
membrane
membranes
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.)
Pending
Application number
DE19712137188
Other languages
German (de)
Inventor
Christian Dr Bachem
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SPRENGER ALBIN KG
Original Assignee
SPRENGER ALBIN KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SPRENGER ALBIN KG filed Critical SPRENGER ALBIN KG
Priority to DE19712137188 priority Critical patent/DE2137188A1/en
Priority to FR7226591A priority patent/FR2147637A5/fr
Publication of DE2137188A1 publication Critical patent/DE2137188A1/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G01W1/08—Adaptations of balloons, missiles, or aircraft for meteorological purposes; Radiosondes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0076—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means
    • G01L9/0077—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means for measuring reflected light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0082—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means
    • G01L9/0088—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means using photoelectric means

Description

ü A Ic O M E T B U, insbesondere für Radiowettersondenü A Ic O M E T B U, especially for radio weather probes

Gegenstand der Erfindung ist ein Barometer, enthaltend aeaibraiien, die einen evakuierten Hohlraum abschließen und deren Durchbiegung als Maß für den Außendrucl·; dii;nt. 'The subject of the invention is a barometer, containing a eaibraiien which close an evacuated cavity and whose deflection as a measure for the external pressure; dii; nt. '

Die Ei'findung ist dadurch gekennzeichnet, daß der Luftdruck bestimmt wird aus der Intensität von Lichtstrahlen, die mit einem voii der Membraiiendurchbiegung abhängigen langunt er schied miteinander interferieren.The invention is characterized in that the air pressure is determined from the intensity of light rays which interfere with one another with a length that is dependent on the deflection of the membrane.

Erfindungsgemäß gebaute Barometer bestehen aus wenigen einfach geformten leicht=u Bauteilen und haben eine den interferometrischen Meßverfahi'en eigentümliche extreme Meßgenauigkeit.Barometers built according to the invention consist of a few, simply shaped, lightweight components and have an interferometric one Extreme measuring accuracy peculiar to the measuring method.

Zum Stande der Technik zeigt Abb. 1 schematisch ein gebräuchliches Barometer.For the state of the art, Fig. 1 shows schematically a common one Barometer.

2 Jletallinembranen (l)» (i) bilden eine sogenannte Vidiedose, die mit einem Stutzen (2) in einem Gestell (3) so montiert ist, daß die Elemente ( Ί ) und (5) ihren Abstand abhängig vom Hub der Vidiedose (bzw. abhängig vom Luftdruck) ändei^n und dabei eine Induktivität oder eine Kapazität oder einen Widerstand oder auch die Position eines an (k) gelagerten Zeigers steuern, oder was sonst zu dem gewählten System der Fernübertragung des druckabhängigen Signals passt. Für die Verwendung eines solchen Barometers in Radiosonden ist unbefriedigend, daß die Herstellkosten hoch sind und daß Anzeigefehler wegen der Temperaturabhängigkeit der mechanischer Bauteile und der elektrischen Komponenten, auftreten, die auch mit zusätzlichen Kompensationsmaßnahmen schwer behebbar sind.2 Jletallinembranen (l) »(i) form a so-called video box, which is mounted with a connector (2) in a frame (3) so that the elements (Ί) and (5) their distance depending on the stroke of the video box (or .depending on the air pressure) change an inductance or a capacitance or a resistance or even the position of a pointer attached to (k) , or whatever else fits the selected system of remote transmission of the pressure-dependent signal. It is unsatisfactory for the use of such a barometer in radiosondes that the manufacturing costs are high and that display errors occur due to the temperature dependence of the mechanical components and the electrical components, which are difficult to remedy even with additional compensation measures.

Abb. 2 zeigt ein erfindungsgemäßes Barometer, bestehend aus 2 GLasmembranen (11), die an den inneren Flächen (11.2) und (11.3) teLldurchlässig verspiegelt sein können und die mit einem Distanzriug (12) vakuumdicht verbunden sind. Lichtquelle (13) und Photozelle (1Λ) sind vorzugsweise nahe der Symmetrieachse von (ll) angeordnet. In der vergrößerten Darstellung in Abb. 3 sind die nach nniht-facher Reflexion an ( 1 ! . 2 ) und (i:«3) nach (jA) gelangenden leilstrahlen hervorgehoben, die sich bei bestimmten AbständenFig. 2 shows a barometer according to the invention, consisting of 2 glass membranes (11), which can be partially transparent reflective on the inner surfaces (11.2) and (11.3) and which are connected to a spacer (12) in a vacuum-tight manner. Light source (13) and photocell (1Λ) are preferably arranged near the axis of symmetry of (ll). In the enlarged representation in Fig. 3, the rays of the rays reaching (1!. 2) and (i: «3) to (jA) after nnft-fold reflection are highlighted, which are at certain distances

d = d + 117? maximal verstärken und bei max. 0—2d = d + 117? amplify to the maximum and at max. 0-2

d . · = d 4_ (2n+l)£" gegenseitig extrem schwächen.d. · = D 4_ (2n + l) £ "extremely weaken each other.

Eine mono ehr onici t ische Lichtquelle (13) liefert bei stetiger; An<h; 1 uiii·. des Abstandes d (des Drucks) eine periodische Intensitätsündening iti ( ΐΛ) (.s. Abb. k) .A monauronical light source (13) supplies with steady; An <h; 1 uiii ·. of the distance d (of the pressure) a periodic intensity ignition iti (ΐΛ) (.s. Fig. k) .

L)ii- ZahL dor intensi ta t.smaxima pro 1OOO Millibar kann mit Stärke und Durchmesser der Glasmembranen in weiten Grenzen gewählt werden. /.!J. können 2[}0 Maxima pro lOOO mb (d.i. 5OO Extremwerte der Intensität) .mi. Membranen von ca. 1 mm Stärke und 1IO mm Durchmesser renlhiiert worden mit den Nu-D-Linien als Lichtquelle.L) number of intensi ta t.maxima per 10000 millibars can be selected within wide limits with the strength and diameter of the glass membrane. /.!J. can have 2 [} 0 maxima per 100O mb (that is, 500 extreme values of the intensity) .mi. Renlhiiert membranes been of about 1 mm thickness and 1 mm in diameter with the IO Nu-D lines as a light source.

ORIGINALORIGINAL

209885/0727209885/0727

Claims (1)

2 1 3713 2 1 3713 P A T E N T A N S P R U C II EP A T E N T A N S P R U C II E BAROMETER, insbesondere für Radiowettersonden, bei denen die Durchbiegung von Membranen als Druckmaß dient, dadurch gekennzeichnet, daß die Membrandurchbiegung bestimmt wird aus der Intensität von Lichtstrahlen.,, die mit einem von der Durchbiegung abhängigen Gangunterschied interferieren.BAROMETER, especially for radio weather probes, where the deflection of membranes as Pressure measurement, characterized in that the membrane deflection is determined from the intensity of rays of light. ,, which with one of the deflection-dependent path difference interfere. BAROMETER, nach Anspruch 1, gekennzeichnet durch Membranen, aus einem transparenten Werkstoff wie Glas oder Quarz, die mit einem Distaiizring vakuumdicht verbunden sind.BAROMETER according to claim 1, characterized by Membranes made from a transparent material such as Glass or quartz, vacuum-tight with a distaiizring are connected. BAROMETER, nach Anspruch 1 und 2, gekennzeichnet durch die Verwendung einer Lichtquelle mit zwei hervorragenden Spektrallinien, deren Wellenzahl bezogen auf den zu messenden Membranhub sich um mehrere Einheiten unterscheidet.BAROMETER, according to claim 1 and 2, characterized by the use of one light source with two outstanding spectral lines, the wave number of which is related to the membrane stroke to be measured distinguishes several units. OFHGINAL INSPECTED 209885/0727 OFHGINAL INSPECTED 209885/0727 LeerseSfeLeerseSfe
DE19712137188 1971-07-24 1971-07-24 BAROMETER, IN PARTICULAR FOR RADIO WEATHER PROBES Pending DE2137188A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19712137188 DE2137188A1 (en) 1971-07-24 1971-07-24 BAROMETER, IN PARTICULAR FOR RADIO WEATHER PROBES
FR7226591A FR2147637A5 (en) 1971-07-24 1972-07-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712137188 DE2137188A1 (en) 1971-07-24 1971-07-24 BAROMETER, IN PARTICULAR FOR RADIO WEATHER PROBES

Publications (1)

Publication Number Publication Date
DE2137188A1 true DE2137188A1 (en) 1973-02-01

Family

ID=5814775

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712137188 Pending DE2137188A1 (en) 1971-07-24 1971-07-24 BAROMETER, IN PARTICULAR FOR RADIO WEATHER PROBES

Country Status (2)

Country Link
DE (1) DE2137188A1 (en)
FR (1) FR2147637A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975589A3 (en) * 2007-03-29 2010-06-02 Siemens Aktiengesellschaft Pressure measurement device and method for determining the power of the wind on wind energy facilities, use of the pressure measurement device and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2677448A1 (en) * 1991-06-07 1992-12-11 Sextant Avionique Measurement device with aneroid capsule
US7409867B2 (en) * 2006-05-23 2008-08-12 Rosemount Inc. Pressure sensor using light source

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975589A3 (en) * 2007-03-29 2010-06-02 Siemens Aktiengesellschaft Pressure measurement device and method for determining the power of the wind on wind energy facilities, use of the pressure measurement device and method
US8322984B2 (en) 2007-03-29 2012-12-04 Siemens Aktiengesellschaft Pressure measurement device and method for determining wind force at wind energy installations

Also Published As

Publication number Publication date
FR2147637A5 (en) 1973-03-09

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