JP6852402B2 - Observation device - Google Patents

Description

The present invention relates to an observation device that collects salt in the atmosphere and measures humidity.

The amount of salt scattered in the atmosphere (hereinafter, included per unit volume) in order to investigate the corrosion state of various materials (for example, insulators, metal materials) used for insulators and steel towers of power transmission systems. The amount of salt obtained is called the air salt density, and the product of this is called the amount of scattered salt). In order to measure the salt density and the amount of scattered salt in the atmosphere, it is necessary to collect the salt scattered in the atmosphere.

The dry gauze method specified in JIS Z2382 is to fit gauze in a wooden frame, install the wooden frame and gauze in a well-ventilated place that does not get wet with rain, and measure the amount of salt attached to the gauze. is there.
The scattered salt capture device described in Patent Document 1 is a device in which gauze is rolled into a cylindrical shape and held in an upright state.
The method for capturing and analyzing sea salt particles described in Patent Document 2 is to capture the sea salt particles with a filter by sucking the atmosphere through a filter having a finer mesh than the sea salt particles.
In the scattered salt capture device described in Patent Document 3, a mechanism for capturing salt in an updraft due to wind is arranged under a truncated cone-shaped roof.
In the scattered salt trapping device described in Patent Document 4, a housing is provided under the roof material, and a plurality of windows are provided on the side surfaces of the housing in different directions, and a salt collecting cloth is stretched over these windows. By doing so, it is possible to cope with the capture of scattered salt in the wind in multiple directions.

In addition to the salt content in the air, the corrosion factors of the material are also affected by temperature and humidity. Therefore, in addition to measuring the amount of salt in the atmosphere, it is also necessary to measure temperature and humidity. In addition, it is desired to realize the capture of salt in the atmosphere, temperature measurement, and humidity measurement with the same device.
An electronic thermometer that uses a temperature-sensitive element whose change in electrical characteristics depends on temperature change is used as a sensor for temperature measurement, and a hygrometer whose change in electrical characteristics depends on humidity change for humidity measurement. It is common to use an electronic hygrometer that uses the above as a sensor.

Japanese Patent No. 5876615 Japanese Unexamined Patent Publication No. 2010-112719 Japanese Patent No. 5677595 Japanese Unexamined Patent Publication No. 2015-021796

By the way, the relative humidity of air in equilibrium with a saturated aqueous solution of salt is determined by the type of salt and the temperature of the solution (see JIS B 7920: 2000). The surroundings are kept at a constant humidity. Therefore, if the capture of salt in the atmosphere and the measurement of humidity are realized by the same device, the salt captured in gauze or the like acts to keep the humidity around the humidity sensor constant, and the humidity measured by the humidity sensor is in the atmosphere. It is different from the actual humidity. Therefore, an error occurs in the humidity measured by the humidity sensor.

Therefore, the present invention has been made in view of the above circumstances. An object of the present invention is to prevent the captured salt from adversely affecting the humidity measurement when the capture of salt in the atmosphere and the measurement of humidity are realized by the same device.

The main invention for solving the above problems is a collecting material that is breathable and has a tubular shape that opens at both ends in the central axis direction and is capable of collecting salt, and is arranged inside the collecting material. It is an observation device including a humidity sensor provided and a blower that blows air inside the collecting material in a direction from one opening of the collecting material to the other opening.

According to the present invention, since air is blown to the humidity sensor by the blower, even if salt is collected by the collecting material, the salt does not adversely affect the humidity measurement of the humidity sensor.

FIG. 1 is a perspective view of the observation device. FIG. 2 is a vertical cross-sectional view of the observation device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, although the embodiments described below are provided with various technically preferable limitations for carrying out the present invention, the scope of the present invention is not limited to the following embodiments and illustrated examples.

1. 1. Configuration of Observation Device FIG. 1 is a perspective view of the observation device 10. FIG. 2 is a vertical cross-sectional view showing the inside of the observation device 10.
The observation device 10 includes a shielding box (100-leaf box) 1, an observation equipment main body 20 housed inside the shielding box 1, and a control panel (control unit) 90.

The shielding box 1 shields sunlight, prevents rainwater from entering, and is breathable. The shielding box 1 is formed in the shape of a rectangular parallelepiped box, openings (air guides) are formed on four side surfaces, and louvers 2 are provided in these openings. The louver 2 has a configuration in which a plurality of armor plates (rectifying plates) that incline upward from the outside to the inside at about 45 ° are arranged one above the other. The lower surface of the shielding box 1 is open. Further, a top plate 3 is provided at the upper end of the shielding box 1, and the top plate 3 also functions as a lid for putting in and taking out the observation equipment main body 20. That is, the edge portion of the top plate 3 is connected to the upper end of the shielding box 1 by the hinge 8, and the edge portion on the opposite side of the top plate 3 is fixed by the lock / unlockable fastener 9.
The shielding box 1 is installed in a measurement place such as outdoors so that the central axis extending vertically extends vertically.

The observation device main body 20 is housed inside the shielding box 1 in a state of being separated inward from the four side surfaces of the shielding box 1 and the top plate 3. Further, the observation device main body 20 is supported by the shielding box 1 by a support (not shown) provided inside the shielding box 1, and is detachable from the support.
The observation equipment main body 20 includes a holder 30, a cylinder 40, a collecting gauze (collecting material) 50, a temperature / humidity measuring device 60, a filter 70, and a blower 80.

The holder 30 is detachably supported by the shielding box 1 by the above-mentioned support tool. The holder 30 is provided in a columnar shape, and the outer peripheral surface 31 of the holder 30 is formed in a columnar shape. A mounting hole 32 is formed in the central portion of the holder 30 so as to penetrate the holder 30 vertically.

The temperature / humidity measuring device 60 measures the temperature and humidity in the air (particularly relative humidity) and outputs an electric signal indicating the measured temperature and the measured humidity. The temperature / humidity measuring device 60 includes a main body 61, a probe 62, a temperature sensor (temperature sensor) 63, and a humidity sensor (humidity sensor) 64.

The base end portion of the probe 62 is connected to the main body portion 61, and the probe 62 extends from the main body portion 61. The probe 62 is mounted in the mounting hole 32 so as to penetrate the holder 30 vertically, whereby the temperature / humidity measuring device 60 is supported by the holder 30.

A temperature sensor 63 and a humidity sensor 64 are provided at the tip of the probe 62. The temperature sensor 63 is, for example, a thermistor, a resistance temperature detector or a thermocouple. The humidity sensor 64 is, for example, an electrostatic capacity type humidity sensor or an electric resistance type humidity sensor. A measuring circuit 65 is built in the main body 61, and the measured temperature of the temperature sensor 63 and the measured humidity of the humidity sensor 64 are converted into electric signals by the measuring circuit 65. The measurement circuit 65 is controlled by the control panel 90.

A filter 70 is attached to the tip of the probe 62, and the inside of the filter 70 is hollow. A temperature sensor 63 and a humidity sensor 64 are housed inside the filter 70. The filter 70 has air permeability, and dust and the like of air passing through the filter 70 is captured by the filter 70.

The holder 30 is covered with a hollow cylindrical cylinder 40. Specifically, the holder 30 is fitted into the lower opening of the cylinder 40, and the retaining ring 33 tightens the cylinder 40 to the holder 30 from the outside of the cylinder 40. Most of the upper side of the cylinder 40 extends upward from the outer peripheral surface 31 of the holder 30, and the temperature sensor 63 and the humidity sensor 64 are arranged inside the cylinder 40. The cylinder 40 and the probe 62 are arranged coaxially, and the temperature sensor 63 and the humidity sensor 64 are arranged above the holder 30 on the central axis of the cylinder 40. Further, the central axis of the tubular body 40 and the central axis of the shielding box 1 coincide with each other, and the four side surfaces of the shielding box 1 surround the tubular body 40 on the radial outer side of the tubular body 40. Similar to the central axis of the shielding box 1, the central axis of the tubular body 40 is also installed vertically.

A collecting gauze 50 is wrapped around the upper part of the cylinder 40. As a result, the flexible collecting gauze 50 is maintained in a cylindrical shape, and the central axis of the collecting gauze 50 is installed vertically.
Since the tubular body 40 is reticulated, a large number of ventilation holes are formed in the tubular body 40. Therefore, even if the collecting gauze 50 is wound around the cylinder 40, the air permeability of the collecting gauze 50 is ensured.
The collecting gauze 50 is separated upward from the outer peripheral surface 31 of the holder 30, and the tubular body 40 is exposed below the collecting gauze 50. Therefore, between the collecting gauze 50 and the holder 30, the space inside and the space outside the cylinder 40 are communicated by the ventilation holes of the cylinder 40.

A blower 80 is attached to the upper side of the cylinder 40. The blower 80 is directed to the upper opening of the tubular body 40 below it. The direction of the air blown by the blower 80 is from top to bottom, and the blower 80 creates downward forced convection inside the cylinder 40.
The blower 80 is controlled by a control panel 90.

The control panel 90 includes a power source (for example, a photovoltaic power generation cell, a primary battery, a secondary battery, a power supply circuit), a control circuit, and the like. When the power source is a photovoltaic power generation cell, the photovoltaic power generation cell is installed outside the shielding box 1.

The control panel 90 intermittently operates the blower 80 and the temperature / humidity measuring device 60 (particularly the measuring circuit 65). Specifically, the control panel 90 operates the blower 80 and the measurement circuit 65 at the same time every time a predetermined period (for example, 1 hour) elapses, and keeps the operating state of the blower 80 and the measurement circuit 65 for a predetermined time (the predetermined time is the predetermined time). It is shorter than the predetermined period, for example, 1 minute.) After holding, the blower 80 and the measurement circuit 65 are stopped. Therefore, the humidity and temperature are intermittently measured by the temperature sensor 63 and the humidity sensor 64, and forced convection synchronized with the measurement timing is generated by the blower 80 around the temperature sensor 63 and the humidity sensor 64. The operating time of the blower 80 and the measurement circuit 65 each time is shorter than the stop time of each time of the blower 80 and the measurement circuit 65.

The control panel 90 may have a recording medium such as a semiconductor memory and have a function as a data logger. Specifically, the control panel 90 records the measurement temperature and the measurement humidity input from the measurement circuit 65 on the recording medium in association with the measurement time (operating time of the measurement circuit 65).

2. How to use and the effect of the observation device The observation device 10 is installed in a measurement place such as outdoors so that the central axes of the shield box 1 and the cylinder 40 are vertical. Since the temperature / humidity measuring device 60 and the collecting gauze 50 are housed in one shielding box 1 and the observation device 10 is small and lightweight, the installation work of the observation device 10 is easy and the observation device 10 Space can be saved in the installation location.
In fine weather, sunlight is blocked by the louver 2, and in rainfall, rainwater is blocked by the louver 2.
After installing the observation device 10, the control panel 90 is turned on. Then, the blower 80 and the measurement circuit 65 are intermittently operated by the control panel 90.

Since there are gaps between the adjacent armor plates of the louvers 2, the wind blows through the gaps from the outside to the inside of the shield box 1 to the outside. Here, since the louvers 2 are provided on the four side surfaces of the shielding box 1, the wind blows through the shielding box 1 regardless of the wind direction. Then, since the collecting gauze 50 is held in a state of being erected in a cylindrical shape by the tubular body 40 at the center of the shielding box 1, the salt content that has flown into the shielding box 1 is held in the shield box 1 regardless of the direction of arrival. Adhere to. The amount of salt adhering to the collected gauze 50 depends on the wind speed of the wind blowing through the shielding box 1 and the density of salt in the air.

Since the filter 70 is arranged inside the collecting gauze 50, the air salt density becomes low inside the collecting gauze 50 while the blower 80 is stopped, and almost no salt adheres to the filter 70. On the other hand, during the operation of the blower 80, air flows into the inside of the cylinder 40 from the upper side of the cylinder 40 by the blower 80 and is blown to the temperature sensor 63 and the humidity sensor 64. Therefore, the temperature and humidity in the atmosphere are accurately measured by the temperature sensor 63 and the humidity sensor 64 without being affected by the salt adhering to the collected gauze 50. Further, since salt hardly adheres to the filter 70 while the blower 80 is stopped, the air salt density of the air does not change when the air flowing during the operation of the blower 80 passes through the filter 70. Therefore, the temperature and humidity are accurately measured by the temperature sensor 63 and the humidity sensor 64.

The air flowing inside the cylinder 40 by the blower 80 passes through the portion of the cylinder 40 between the collecting gauze 50 and the holder 30 from the inside to the outside. Therefore, it is possible to prevent the salt adhering to the collecting gauze 50 from separating from the collecting gauze 50 due to the forced convection of the blower 80.

3. 3. Modified Examples Although the embodiments for carrying out the present invention have been described above, the above embodiments are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. Further, the present invention can be modified or improved without departing from the spirit thereof, and the present invention also includes an equivalent thereof. The changes from the above embodiments will be described below. The changes described below may be applied in combination as much as possible.

(1) In the above embodiment, the tubular body 40 is formed in a cylindrical shape, but the tubular body 40 may be formed in another tubular shape such as a square tubular shape.

(2) The observation device main body 20 may be turned upside down and installed in the shielding box 1.

(3) The ventilation holes may be formed so as to penetrate the holder 30 vertically. In this case, the wind generated by the blower 80 blows through the holder 30 from top to bottom through the ventilation holes.

(4) The control panel 90 may be installed in a rainproof shield box other than the shield box 1, and wiring may be routed from the control panel 90 to the measurement circuit 65 and the blower 80.

1 ... shield box, 10 ... observation device, 40 ... cylinder, 50 ... collection gauze (collection material), 63 ... temperature sensor, 64 ... humidity sensor, 65 ... measurement circuit, 70 ... filter, 80 ... blower, 90 … Control panel (control unit)

Claims (6)

A cylindrically shaped collecting material that is breathable and opens at both ends in the central axis direction, and a collecting material that can collect salt.
A humidity sensor arranged inside the collecting material and
An observation device including a blower that blows air inside the collecting material in a direction from one opening of the collecting material to the other opening. The observation device according to claim 1, wherein the blower is arranged on the one opening side of the collecting material, and the blowing direction of the blower is the central axis direction. The observation device according to claim 1 or 2, further comprising a control unit that intermittently operates the blower. The observation device according to any one of claims 1 to 3, further comprising a filter having air permeability and surrounding the humidity sensor inside the collecting material. The invention according to any one of claims 1 to 4, further comprising a shielding box that houses the collecting material, the humidity sensor, and the blower, shields sunlight, prevents rainwater from entering, and has air permeability. Observation device. The observation device according to any one of claims 1 to 5, further comprising a temperature sensor disposed inside the collecting material.

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