JP2578349Y2 - Humidity sensor holder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a sensor holder for a weather observation device.

[0002]

2. Description of the Related Art A conventional radiosonde contains a humidity sensor, a barometer, a data signal processing section, a transmission section, and a battery section inside a main body of the apparatus. In order to protect the internal equipment from obstacles caused by rapid temperature changes, the device body is generally covered with a plastic cover made of heat insulating material, and a temperature sensor is attached to the tip of a support extending from the device body to the outside. is there.

Accordingly, a conventional radiosonde is provided with a so-called “wind cylinder” by devising the shape of the upper surface of the heat insulating container and the cover so that the wind flows in a laminar flow in the space containing the hygrometer during flight. And a black non-reflective plate is attached to the bottom surface of the measurement space to prevent sunlight from entering the humidity measurement space.

As described above, in the conventional humidity sensor, since the space for mounting the humidity sensor housed inside the cover is set to the same environment as the outside air, the structure of the hygrometer mounting portion is extremely complicated in combination with the shape of the humidity sensor. Has become.

The present invention proposes to solve such a problem, and an object thereof is to provide a humidity sensor mounting structure which is simple in structure and easy to handle.

[0006]

According to the present invention, a humidity sensor is protruded and supported outside a radiosonde main body, and an elongated copper-clad laminate for printed wiring is used as a support base thereof. A cutout is provided at the end of the cutout, a humidity sensor is attached to the cutout space, and a protective bottom opening cap is fitted and sandwiched in the empty space of the cutout to cover the humidity sensor, thereby protecting the humidity sensor. The atmosphere was allowed to flow freely to the humidity sensor.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Each of the drawings shows an embodiment of the present invention.

FIG. 1 shows a state in which the sensor holder of the present invention is mounted on a radiosonde, FIG. 2 is a partially enlarged view of the sensor holder, FIG. 3 is a detailed view of a main part of the sensor holder, and FIG.
Is a detailed view (longitudinal section) of the cap, and FIG. 5 is a view showing a mounting procedure for fitting the cap into the sensor holder.

FIG. 1 shows a radiosonde main body, which houses a sensor unit for sensing weather elements, an electric circuit unit for converting information from the sensor unit to an electric signal and transmitting it to the ground, a battery unit, and these units. The storage box 1 includes:

In the sensor section, the temperature sensor 8 and the humidity sensor 7 are projected outside the storage box 1 by the sensor holder 2 so as to easily respond to the environment of the outside air.

An electric circuit section and the like are housed in the housing box 1, housed and held by a stop belt 3, and connected to a balloon (not shown) by a hanging string 4.

Since the radiosonde is generally released by a balloon, it is required to be small and weighed, and the storage box 1 is made of styrene foam resin or the like.

FIG. 2 is an enlarged view of the tip of the sensor holder 2 of FIG. 1 and shows the mounting state of the cap 5 and the humidity sensor 7.

The humidity sensor 7 is connected to an electric circuit in the storage box 1 by a copper foil for wiring of the sensor holder 2.

Note that a temperature sensor 8 is also attached to the tip of the sensor holder 2.

As shown in FIG. 3, the sensor holder 2 has a length L of about 200 mm, a width W of about 20 mm, and a thickness of about 0.3.
It is made of a copper-clad laminate for printed wiring with an elasticity of 5 mm.

At a position (a part of the upper part) slightly lower than the tip end where the temperature sensor 8 is mounted, a triangular cap support part 9 whose apex angle is located downward at the center in the width direction and both lower parts thereof. The side is cut out so as to have a groove 10 (the dimension of the upper part of the groove is indicated by A1, and the dimension of the lower part of the groove is indicated by A2) having a tapered shape with a slightly narrow upper part.

The cap 5 has a cylindrical shape as shown in FIG. 4, and the center of the top is depressed (recess 5A) as compared with the periphery, and is made of an aluminum material having a plate thickness of about 0.5 mm. ing.

The inner diameter D1 of the cap 5 is set so that the relationship between the upper dimension A1 of the groove 10 and the lower dimension A2 of the groove 10 is A1 <D1 <A2.

The inner diameter D1 is set to be substantially equal to the depth D2 of the cylinder so that the environment in the cap 5 can quickly follow changes in ambient atmospheric conditions.

As shown in FIG. 4, the cap 5 has an "open space" 5B below so that a sufficiently good ventilation can be obtained.

Next, the procedure for mounting the cap 5 on the sensor holder 2 will be described with reference to FIG.

FIG. 5 does not show the temperature sensor 8 at the tip of the sensor holder 2 and the humidity sensor 7 housed in the cap 5.

After the humidity sensor 7 is attached to the sensor holder 2 in a predetermined manner, the upper portion of the sensor holder 2 is bent by applying a force in the direction of the arrow, and the opening edge 5C of the cap 5 is inserted into the groove 10 against elasticity.

Since the inner diameter dimension D1 of the cap 5 is smaller than the lower dimension A2 of the groove 10 of the sensor holder 2, the opening edge 5C of the cap 5 is slightly deformed with the insertion.

After the cap 5 is completely inserted into the groove 10 in this way, the sensor holder 2 is pressed after the tip 9A of the cap supporting portion 9 of the sensor holder 2 presses the recess 5A in the head of the cap 5. If the curvature of the upper part of 2 is released, the fitted state is stabilized.

In this way, the bottom of the cap 5 is
It is held between the groove 10 and the cap supporting portion 9 at the same location.

FIG. 2 shows a state in which the cap 5 is mounted on the sensor holder 2 by the above procedure.

The sensitivity values of the temperature sensor 8 and the humidity sensor 7 are guided to the electric circuit section in the storage box 1 through the printed wiring of the sensor holder 2 as electric signal values.

The vertical cut 11 provided below the cutout 6 in FIG. 5 prevents the humidity sensor 7 from having a large amount of dew or the like accumulated in the portion between the grooves 10 on both sides. It is effective to reduce.

In addition, when the cap 5 is fitted into the grooves 10 and 10, it is slightly bent in the width W direction, so that the cap 5 is fitted against the elasticity of the sensor holder 2, and after the fitting, An effect of stabilizing the cap 5 by an outward force in the width W direction by the elastic force is exhibited.

From this point of view, it is effective to provide not only one cut 11 but a plurality of cuts 11 in parallel. However, if the number of the cuts 11 is increased, the portion between the grooves 10, 10 is weakened, so that there is an appropriate number in practical use.

In this specification, the terms “upper” and “lower” refer to the respective drawings.

[0034]

As described above, in the present invention, since the humidity sensor is directly mounted on the sensor holder protruding outside the radiosonde main body, the structure for mounting the sensor is simple.

Further, since the humidity sensor is protected by a small-cap capacity, the humidity sensor is protected from the atmospheric environment, and since the cap ventilation structure quickly follows the environmental conditions, accurate measurement is possible. is there.

Furthermore, it has many advantages such as a simple structure and a small measuring weight as compared with a conventional one used for protecting a humidity sensor, for example, a wind tube, and a simple mounting method and other handling.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a usage example of an embodiment of the present invention.

FIG. 2 is a front view showing an assembled state of a main part of the embodiment of the present invention.

FIG. 3 is a front view showing a structure of a main part of the embodiment of the present invention.

FIG. 4 is a front vertical sectional view showing a part of the embodiment of the present invention.

FIG. 5 is a perspective view showing an assembly procedure of the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Storage box 2 ... Sensor holder 5 ... Cap 6 ... Cutout part 7 ... Humidity sensor 8 ... Temperature sensor 9 ... Cap support part 10 ... Groove A1 ... Spacing distance of the upper part of the grooves 10 and 10 on both sides A2 ... Grooves on both sides Delivery distance of the lower part of 10,10

Claims (3)

(57) [Scope of request for utility model registration] 1. A plate-shaped humidity sensor holder (2) projecting from the radiosonde body to the outside, a cutout (6) is provided above the humidity sensor holder (2), and the cutout (6) is It has a downwardly directed apex (9A) on its upper part and tapered grooves (10) on both sides of the lower part,
(10), a cap (5) is provided outside the humidity sensor (7) attached to the cutout (6), and the cap (5) is provided with a depression (5A) on the upper side and a lower part on the lower side. Has a space (5B) for air circulation, and has an opening edge (5C) below the cap (5).
Is inserted into the grooves (10) and (10) against elasticity, and the cap (5A) is engaged with the top (9A) so that the cap (5) is attached to the humidity sensor holder (2). Humidity sensor holder clamped. 2. The humidity sensor holder according to claim 1, wherein the grooves (10), (10) are tapered from the upper side to the lower side. 3. The humidity sensor holder according to claim 1, wherein at least one notch (11) is provided in a member of the humidity sensor holder (2) located between the grooves (10).