FI115489B - Procedure and arrangement for interconnecting a radio probe and a probe ball - Google Patents

Description

115489

The invention relates to a method for coupling a radiosonde and a probe ball according to the preamble of claim 1. The present invention relates to a method for connecting a radiosonde and a probe ball to a radiosond och en sondboll.

The invention also relates to an arrangement for coupling a radiosonde and a probe ball according to the preamble of claim 4.

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Radiosondes mounted on a probe ball are used to measure climatic conditions. The purpose of a lighter-than-air gas-filled probe ball is to transport the radiosonde from the ground up through the air layers. A probe is emerging behind the probe ball, where the climatic conditions differ from the actual measurable ambient climates. Because of this, the radiosonde is attached with a relatively long, e.g., 60 m long, hanging wire to the probe ball.

The metering devices in the radiosonde are used for meteorological measurements, with measurable variables such as temperature, humidity, pressure and location. The basic location of the radiosonde »♦> • · #, ··, 20 is based on the GPS method, and changes in the location data allow the wind speed to be inferred. · '. peus and direction. The measurement results of the measuring devices are transmitted by a radio transmitter in the radiosonde to a radio receiver on the ground.

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Because the transmitter of the probe balloon and radio transmitter must be capable of being transmitted by one person 25, a discharge device is used which wraps the hanging wire and from which the hanging wire is discharged in a controlled manner during the initial climb.

. U.S. Pat. No. 4,432,502 discloses an arrangement based on an emitter coil, wherein an emitter. The connecting wire between the probe ball and the radiosonde twisted into the bobbin is released in a controlled manner from the release bobbin during ascent. The release spool has a longitudinal axis around which the hanging wire is. twisted and transverse dimension that increases in the longitudinal axis from a narrow upper end to a wider lower end. The discharge spool may be round, oval, or flat. The ejector 2 115489 bobbin performs a periodic oscillating motion below the probe ball as the probe ball rises and the hanging wire is released from the ejector in a controlled and appropriate manner.

In the known solutions, one end of the hanging wire is directly attached to the release device by a knot and the other opposite end of the hanging wire is attached by a knot to the radiosonde or to the hanging device attached to the radiosonde. The nodes of the hanging wire form the weakest point of the hanging wire, and the knot weakens the tensile strength of the hanging wire by half or even a third. For this reason, known solutions require the use of two or even three times thicker hanging wires than would otherwise be necessary. This results in material loss and extra costs. Special knots, so-called sailor knots, can reduce the amount of hanging wire weakening caused by the knot, but making special knots is cumbersome and time consuming. For this reason, special nodes are not suitable for industrial mass production.

15

The method of coupling a radiosonde and a probe ball according to the invention is essentially characterized by what is set forth in the characterizing part of claim 1.

* *> 9 * f 'I! The arrangement according to the invention for coupling the radiosonde and the probe ball is essentially characterized by what is set forth in the characterizing sections of claim 4. The solution according to the invention can eliminate the above disadvantage. With the solution of the invention, the hanging wire can be dimensioned solely on the basis of the tensile stresses exerted on it, without the need for attenuation of the hanging wire caused by the knots: ": should be taken into account.

The solution according to the invention is also simple and well suited for mass production. toon.

> 3,115,489

The solution according to the invention utilizes a mechanical phenomenon known per se, according to the following equation, friction of a wire (string, rope) against a circular surface: 52 <51 · β (μ'α) 5 where S 1 is the hanging force, S 2 is the force on the end of the wire; The number of nepers, μ is the coefficient of friction between the wire and the round surface, and a is the wrapping angle of the wire on the round surface.

In the solution of the invention, the release device comprises a winding member and a first tie point. The friction between the hanging wire and the emission source winding member is utilized such that the other end of the hanging wire runs at least one turn, preferably at least two turns, around the winding member, after which the hanging wire is tied to the first tie point. The portion of the hanging wire passing to the hanging device is between the portion passing to the first tie point of the hanging wire and the outer surface of the emission source. With this arrangement, at least one turn of the hanging wire wrapped around the emission source winding member cannot be discharged when the hanging yarn wrapped around the emission source is discharged from the emission source as the probe ball and radiosonde rise.

In the embodiment of the invention, the suspension device comprises a frame member, a guide member formed at a first end of the frame member and a second tie point formed at one end of the frame member. The friction between the hanger wire and the hanger is utilized such that • * 1:. the other end of the hanging wire passes through the control member of the hanging device and rotates at least one turn, preferably at least two turns, around the body portion of the hanging device 25 before the hanging wire is tied to another tie point. The hanging wire passes helically 1 '·: slidably around the frame portion of the hanging device such that the pitch of the hanging wire is determined by the distance between the guide member and the first tie point and the number of turns of the hanging wire around the frame portion. Due to the spiral thread, the radius of the • hanging wire becomes large even though the diameter of the hanger body is small. The large radius of curvature 30 in turn contributes to the tensile strength of the hanging wire, as the hanging wire is retained. : the tension is uniform, so that no tearing of the individual strands occurs. The slim hanger does not interfere with radiosonde measurements and the slim hanger achieves an additional 4,115,489 in material and hence cost savings. A thick suspension device collects a large amount of energy from the sun's rays and releases it to its surroundings, whereby the temperature measured by the temperature sensor near the suspension device may differ from the actual ambient temperature.

In the following, an embodiment of the invention will be described with reference to the drawings in the accompanying drawings, in which details, however, are not intended to be limited solely.

Figure 1 shows schematically the connection between the probe ball and the radiosonde.

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Fig. 2 schematically shows the discharge device and the attachment of the hanging wire to the discharge source.

Figure 3 schematically shows the suspension device and the attachment of the suspension wire to the suspension device 15.

Figure 1 shows probe ball 10, radio probe 20, suspension wire 30, release device 40 and suspension device 50. Release device 40 is attached to neck 11 of probe ball 10 and first end of suspension wire 30 is attached to release device 40. Suspension device 50 is in turn secured to radio probe 20 and the other end of the hanging wire 30 is fixed to the hanging device 50.

. ·· ·. With this arrangement, the radiosonde 20 is substantially suspended from the probe ball 10 at a distance determined by the hanging wire 30.

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In the case of transmission of the radiosonde 20, the hanging wire 30 is wound to the release device 40, which

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The distance between the 25 probe radiosonde 20 and the probe ball 10 is short and the transmitter can hold the probe ball 10 in one hand and the radiosonde 20 in the other hand. When the sender releases the probe

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: ”: Lon 10, the hanging wire 30 starts to discharge in a controlled manner from the emission source at the desired speed: ·. 40, whereby the distance between probe ball 10 and radiosonde 20 increases until the hanging wire. 30 is completely disengaged from the release device 40. When the hanging wire 30 is disengaged. The probe ball 10 and radiosonde 20 continue to rise so that the probe ball 10 is discharged 40. the diosonde 20 remains substantially spaced a distance from the probe ball 10 by the length of the hanging wire 30. The oscillation is energized by the gravity of the radiosonde 20 when the hanging wire 30 is discharged from the release device 40. The ascent balloon 10 and the radiosonde 20 attached thereto preferably have a rising speed of 5 m / s and a 5 hanging wire 30

Fig. 2 shows a release device 40 comprising a winding member 41, a first end member 43 fitted to a first end of a winding member 41 and a second end member 42 fitted to one end of a winding member 41, and a grip part 10 44 mounted on the second end member 42. The winding member 41 preferably consists of a cylinder and the first and second end members 43,42 are preferably formed of thin circular plates.

The first end member 43 of the release device 40 is provided with a first tie pin 15a to which the hanging wire 30 can be tied, and a fastening opening 43b that receives the hanging device 50. The first tie point 43a and the fastening opening 43b can be formed on the first end member 43, e.g. The first tie point 43a then consists of a projection around the plane of the first end member 43. . the hanging wire 30 can be tied. Since said projection 43a is the first end plate 43 • ·). In the '20 plane, it does not interfere with the discharge of the hanging wire 30 from the bobbin member 41. Attachment opening • l. · · ·, 43b consists of a wider portion and a narrower portion.

The gripping part 44 of the release device 40 consists of a mandrel-shaped body having one another. a lifting portion 44a secured to the end member 42 and a gripping portion 44b substantially at 90 degrees to the longitudinal axis X of the bobbin member 41. At the outer end of the engaging portion 44b is; hooked portion 44c. The surface 1 facing away from the probe ball 10 of the grip portion 44b has a tooth 44bl. The neck portion 11 of the probe ball 10, which forms the filling hose, can be folded so as to form a loop (Fig. 1) which is threaded onto the grip. · · ·. over the portion 44b such that the hooked portion 30 44c at the outer end of the engaging portion 44b extends beyond the loop of the neck portion 11 of the probe ball 10. The loop 11 of the neck portion 11 of the probe ball 10 can then be tightened, for example, with an iron wire around the grip portion 44b. The engaging portion 44b must be securely located in the loop 6 115489 of the neck portion 11 of the probe ball 10 to provide a suitable swing resistance to the release source 40. The engaging portion 44b 1 of the engaging portion 44b facilitates retaining the loop of the neck portion 11 of the probe ball 10. The elevation portion 44a of the engaging portion 44 has a substantially I-shaped cross-section and the cross-section of the engaging portion 44b forms a polygon.

The hanging wire 30 between the release source 40 and the suspension device 50 is secured to the release source 40 by wrapping at least one turn, preferably at least two turns, around the winding member 41 of the release device 40, followed by a loop 31 at the first end member 43 of the release device 40. to the first binding point 43a. The hanging wire portion 32 extending to the hanger 50 then passes between the yarn portion 33 leading to the first tie point 43a and the first end member 43, whereby at least one thread twisted on the winding member 41 is not disengaged when The friction between the winding member 41 and the hanging wire 30 utilizes such that the loop 31 of the hanging wire 30 is exposed to only a fraction of the force exerted by the hanging wire 30 on the hanging wire 50 to release from the release device 40 as the balloon 10 lifts. . . the diosonde 20 is upwardly wrapped in the air layers around the lime 41 of the winding device 40.

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,, ..; Diameter D3 of first end member 43 of discharge device 40, winding of discharge device 40: ·. ·. the diameter D1 of the lumen 41, the height L2 of the emitter 40, the radius R of the oscillation, the oscillation

the movement resistance and the mass of the release device 40 all influence the frequency at which the release device 40 oscillates under the probe ball 10 and the speed at which the hanging wire 30 discharges from the winding member 41 of the release device 40. In a preferred embodiment, D3 is 65 mm,; * ”: D1 is 20mm and L2 is 110mm. Further, the longitudinal axis X of the winding member 41 of the release device 40

; ·. located slightly offset from the center of the first end member 43. The second end member, * ··. 42 has a diameter D2 of 27 mm and a height L1 of the winding member 41 of 45 mm. The diameter D2 of the second end member 30 and the height L1 of the bobbin member 41 are determined by the length and diameter of the hanging wire 30. The hanging wire 30 must fit entirely on the bobbin winder 41.

7 115489

Fig. 3 illustrates a suspension device 50 comprising a frame member 51, a guide member 52 formed at a first end of the body member, preferably consisting of a guide opening or eye, and a mounting member 53 formed at a second opposite end of the body member 51 to the attachment opening 43b in the first end member 43. The side surfaces of the mounting member 53 have grooves (not shown in the figures) which receive the edges of the mounting opening 43b when the mounting member 53 is inserted into the narrower portion of the mounting opening 43b. Further, at the lower end of the body portion 51 of the suspension device 50, a second tie point 53 is formed between the body portion 51 and the fastening member 53, preferably consisting of a lashing loop. The body portion 51 between the control member 52 of the suspension device 50 and the fastening member 53 preferably consists of an elongated cylinder. The suspension device 50 may be held attached to the release device 40 during storage. When probe ball 10 and radio probe 20 are sent to the air, the suspension device 50 is disconnected from the emission source 40 and secured to the radio probe 20 having a receiving opening for the suspension member 53 15 of the suspension device 50. The edges of the mounting opening of the radiosonde 20 receive the grooves at the edges of the mounting member 53 of the hanging member when the engaging member 53 is inserted into the narrower portion of the mounting opening of the radiosonde 20.

. The hanging wire 30 between the release device 40 and the hanging device 50 is secured to the hanging device 50 by threading the end of the hanging wire 30 through the control member 52 ··· of the hanging device 50 and threading at least one turn, preferably tr. ... at least two turns around the frame member 51 of the suspension device 50, followed by the suspension: ·. , the end of the hanging wire 30 is tied to the second tie point 54 by knot 34. The hanging wire 30 then spirally wraps around the body portion 51 of the hanging device 50 such that the distance between the guide member 52 and the second tie point 54 and the number of turns of the hanging wire 30: * around the body portion 51 determine the pitch of the hanging wire 30. The hanging wire 30 then has a: radius of tuft substantially greater than that of the body of the hanging device 50; ·, Radius of section 51. For this reason, the strands of the hanging wire 30 are evenly tensioned so that no tear effect due to the increased stress of the individual strands is produced. When tested, it has been found that the hanging wires 30 require a bending radius of at least 3 mm. With such a rising structure, the hanging wire 30 easily becomes a bending radius of 10 mm, even though the radius of the frame 51 of the hanging device 50 is only 1.5 8 115489 mm. the friction utilizes such that only a fraction of the force exerted by the hanging wire 30 on the hanging device 50 is applied to the node 34 of the hanging wire 30.

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In a preferred embodiment, the body portion 51 of the suspension device 50 has a diameter of 3 mm and the height L3 of the suspension device 50 is 75 mm.

In the above embodiment, the first tying point 43a is formed on the first end member 43 of the release device 10, but the first tying point 43a may also be formed on the winding member 41. The thread portion 32 to the hanging device 50 extends between the outer surface of Also, the first end member 43 is not necessarily required, in which case the bobbin winder 41 must be longer so that the lower end of the bobbin winder 41 leaves a portion of the bobbin thread 30 free of rib. In addition, the cross-section of the winding member 41 must be widened in the discharge direction of the hanging wire 30 to prevent a rush, i.e. uncontrolled discharge of the hanging wire 30 from the winding member 41. Also, the free portion of the lower end of the bobbin winding member 41 contributes to the controlled discharge of the hanging wire 30 from the bobbin winding member 41.

I I · she! '20 In the above embodiment, the body 51 of the suspension device 50 has a cross-sectional view of,. a circular shape that is uniform in load on the strands of the hanging wire 30

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♦ *: Affordable format. However, the body portion 51 of the suspension device 50 may have a cross section

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: ·. , also of other shapes, eg oval, flat or polygonal with rounded corners.

* »• t 25 In the above embodiment, the winding member 41 of the release device 40 has a cross-section; ' ; a circular shape that is uniform in load on the strands of the hanging wire 30 »; : inexpensive form. However, the cross-member 41 of the release device 40 may also have a cross-sectional shape, e.g., oval, flat or polygonal with rounded corners.

In the above embodiment, the diameter D1 of the winding member 41 of the release device 40 is "equal to the height L1 of the entire winding member 41, which is a manufacturing advantageous". However, the diameter D1 of the spool member 41 of the release device 40 could also be variable, e.g., such that the diameter D1 increases along the longitudinal axis X of the spool member 41 from the upper end to the lower end of the spool member 41 to form a cone. The increase in diameter D1 of the bobbin winding member 41 may be uniform or uneven.

5

In the above embodiment, the emission device 40 is mounted directly on the probe ball 10, but, if necessary, there may be, e.g., a radar reflector or parachute between the emission source 40 and the probe ball 10. Hereby, the release device 40 is secured to the abovementioned devices by means of a suitable attachment means, so that the release of the hanging wire 30 from the release device 10 can take place in a controlled manner and at the desired speed.

In the above embodiment, the suspension device (50) is attached directly to the radiosonde (20), but the suspension device (50) may also be indirectly attached via a device to the radiosonde (20).

The release device 40 and the suspension device 50 are preferably made of a suitable plastic material. The plastic material provides a lightweight structure and can be made by plastic forming methods in one or several steps. The discharge device 40 may. thus, physically composed of one and the same body, and the suspension device 50 may also physically form one and the same body.

,,. ; In the situation where the fastening arrangement according to the invention is not applied, the above I » *,. in the embodiment described, to use a hanging wire 30 having a cross-sectional area! ; 0.45 mm 2. When the solution of the invention is applied, the cross-sectional area of the hanging wire 30 having the same characteristics 25 can be reduced to 0.15 mm 2.

The claims which follow, within the scope of the inventive idea as defined, may only vary from the details set forth above by way of example only. s.

Claims (13)

A method of interconnecting a radio probe (20) and a probe ball (10), in which: a release device (40) is attached directly or indirectly to the probe ball (10), - a suspension device (50) is attached directly or indirectly at the radio probe (20) and the suspension device (50) is coupled to the release device (40) with a suspension tree (30), characterized in that: 10. a first end of the suspension trees (30) is wound at least one revolution about a longitudinal axis (X) by a retractor (41) formed on the release device (40), after which the first end of the suspension trees (30) is attached to a first attachment point (43a) formed on the release device in such a way that the part (32) of the suspension trees (30) extending to the suspension device (50) or between the portion (33) of the suspension trees running to the first fixing point (43 a) and the outer surface of the release device (40), - the other end of the suspension trees (30) is guided via a guide means (52) formed at a first end of the suspension device (50) and is wound at least one turn; , About a body part (51) of the suspension device (50), after which the other than *! The one of the suspension trees (30) is attached to one of the other end of the suspension - * *. the device (50) formed second attachment point (54). »· Method according to claim 1, characterized in that the first end of the suspension. *: the trees (30) are wound at least two turns about the longitudinal axis (X) of the retractor (41) formed on the release device (40), after which the first end of the suspension trees (30) is attached to the release device (40). designed first:, '' the attachment point (43a) in such a way that the portion (32) of the suspension trees running upwards; Y; the hanging device (50) runs between the portion (33) of the suspension trees running to; '' '; the first attachment point (43a) and the outer surface of the release device (40). 30. · * ·. Method according to claim 1 or 2, characterized in that the other end of the suspension trees (30) is wound after the control means (52) at least two turns about the body part (51) of the suspension device (50), after which the the other end of the suspension trees is attached to the second end point (54) formed at the other end of the suspension device (50). An arrangement for interconnecting a radio probe (20) and a probe ball (10), which arrangement comprises a release device (40) directly or indirectly attached to the probe ball (10) and a suspension device (directly or indirectly attached to the radio probe (20)). 50) and a suspension tree (30) between the release device (40) and the suspension device (50), characterized in that: 10. the release device (40) comprises a retractor (41) provided with a longitudinal axis (X) and a first attachment point ( 43a), wherein a first end of the suspension trees (30) runs at least one turn around the longitudinal axis (X) of the retractor (41), after which the first end of the suspension trees (30) is attached to the first attachment point (43a) so that the portion (32) ) of the suspension trees running to the suspension device (50) running between the portion (33) of the suspension trees extending to the first attachment point (43 a) and the outer surface of the release device none (40), - the suspension device (50) comprises a body portion (51), one at a first end of: '. the body portion (51) formed control means (52) and one at the other end of the body portion. (51) formed second attachment point (54), the other end of the suspension tree (30):; runs through the guide (52) and at least runs about one turn about the body portion (51); * after which the other end of the suspension tree (30) is fixed to the second attachment point f (54). • · 5. Arrangement according to claim 4, characterized in that the first end of the suspension trees (30) runs at least two turns about the longitudinal axis (X) of the retraction means (41), after which the first end of the suspension trees (30). is fixed to the first: attachment point (43a) in such a way that the portion (32) of the suspension trees running to the suspension device (50) runs between the portion (33) of the suspension trees as Ιοί, 30 per tile of the first attachment point (43a) ) and the outer surface of the release device (40). »» 15 115489 Arrangement according to claim 4 or 5, characterized in that the other end of the suspension wire (30) runs after the guide (52) at least two turns about the body part (51) of the suspension device (50), after which the other end of the suspension wire (50). it (30) is attached to the second fixed point (54). 5 Arrangement according to any of claims 4-6, characterized in that a first end of the retractor (41) of the release device (40) has a first end member (43), on which the first fixed point (43a) and a fixed opening ( 43b) are formed, which fixed aperture (43b) receives the suspension device (50). 10 Arrangement according to claim 7, characterized in that at the other end of the suspension device (50) a fastener (53) is formed, by means of which the suspension device (50) is fixed in the fastener (43b) in the first end member (43). Arrangement according to any of claims 4-6, characterized in that the first fixed point (43a) is formed on the retractor (41). Arrangement according to any of claims 4-9, characterized in that the other end of the retractor (41) of the release device (40) has a second: end member (42). Arrangement according to claim 10, characterized in that the retractor (41) is | ': Advantageously comprises a cylinder and the first and second end members (43, 42): ..,: consists of advantageously thin, circular discs. 25 Arrangement according to claim 11, characterized in that the diameter (D2) of the '...' second end member (42) is larger than the diameter (D1) of the retractor (41) and the diameter (I): the meter (D3) ) of the first end member (43) is larger than the diameter (D2) of the second end; the well member (42). ·. 30 '. Arrangement according to claim 10, characterized in that the release device (40) comprises a scalloped gripping part (44) attached to the second end member (42), which receives a loop formed on a neck part (11) of the probe ball (10). forming an attachment between the release device (40) and the probe ball (10).