JP2018109559A - Observation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent captured salinity from adversely affecting hygrometry in a case of capturing salinity in atmosphere and measuring humidity with the same equipment.SOLUTION: An observation device 10 includes: a capture material 50 having air permeability, formed into a cylindrical shape and capable of capturing salinity; a humidity sensor 64 disposed inside the capture material 50; and an air blower 80 configured to feed air to the inside of the capture material 50.SELECTED DRAWING: Figure 2

Description

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

  In order to investigate the corrosion status of various materials (such as insulators and metal materials) used in insulators and steel towers of power transmission systems, the amount of salt scattered in the atmosphere (hereinafter included per unit volume) The amount of salinity that is generated is called air salinity density, and this is multiplied by the wind speed. In order to measure the salinity 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 insert gauze into a wooden frame, install the wooden frame and gauze in a well-ventilated place that does not get wet in the rain, and measure the amount of salt attached to the gauze. is there.
In the scattered salt content capturing device described in Patent Document 1, the gauze is rolled into a cylindrical shape and held in a standing 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 air through a filter having finer mesh than the sea salt particles.
The scattered salt content capturing apparatus described in Patent Document 3 is configured such that a mechanism for capturing salinity in an updraft caused by wind is disposed under a frustoconical roof.
The scattered salt content capture device described in Patent Document 4 is provided with a casing under the roofing material, and a plurality of windows are provided in different directions on the side surfaces of the casing, and salt collection cloths are stretched on these windows. By doing so, it is possible to cope with the capture of salt scattered in multi-directional wind.

As a corrosion factor of the material, there is an influence of temperature and humidity in addition to air salinity. Therefore, in addition to measuring the amount of salinity in the atmosphere, it is also necessary to measure temperature and humidity. In addition, it is desired that the capture of salinity in the atmosphere, temperature measurement, and humidity measurement be realized with the same device.
For temperature measurement, an electronic thermometer using a temperature-sensitive element whose change in electrical characteristics depends on temperature change as a sensor is used. For humidity measurement, a humidity-sensitive element whose change in electrical characteristics depends on humidity change It is common to use an electronic hygrometer that uses as a sensor.

Japanese Patent No. 5876615 JP 2010-1112719 A Japanese Patent No. 5767595 Japanese Patent Laying-Open 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 humidity measurement are realized with the same device, the salt captured by the gauze acts to keep the humidity around the humidity sensor constant, and the humidity measured by the humidity sensor is Different from 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 salinity from adversely affecting the humidity measurement when capturing the salinity in the atmosphere and measuring the humidity with the same device.

  The main invention for solving the above-mentioned problems is that a salt-collecting material that has air permeability and is formed into a cylindrical shape, a humidity sensor disposed inside the collecting material, and the trapping material are provided. And an air blower that blows air inside the gathering material.

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

FIG. 1 is a perspective view of the observation apparatus. FIG. 2 is a longitudinal sectional view of the observation apparatus.

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

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

The shielding box 1 shields sunlight and prevents rainwater from entering, and has air permeability. The shielding box 1 is formed in the shape of a rectangular parallelepiped box, and openings (air inlets) 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 are inclined at an angle of about 45 ° from the outside toward the inside are arranged vertically. 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 this top plate 3 also functions as a lid for taking in and out the observation apparatus 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 opposite edge portion of the top plate 3 is fixed by the fastener 9 that can be locked / unlocked.
The shielding box 1 is installed at a measurement place such as outdoors so that the central axis extending vertically is vertical.

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

  The holder 30 is supported by the shielding box 1 so as to be detachable by the above-described support. The holder 30 is provided in a columnar shape, and the outer peripheral surface 31 of the holder 30 is formed in a cylindrical surface shape. A mounting hole 32 is formed at the center of the holder 30 so as to penetrate the holder 30 up and down.

  The temperature / humidity measuring device 60 measures the temperature and humidity (especially relative humidity) in the air and outputs an electrical signal representing 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 sensing element) 63, and a humidity sensor (humidity sensing element) 64.

  A proximal 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 up and down, 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 electric capacity type humidity sensor or an electric resistance type humidity sensor. A measurement circuit 65 is built in the main body 61, and the measurement temperature of the temperature sensor 63 and the measurement humidity of the humidity sensor 64 are converted into electrical signals by the measurement 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 accommodated inside the filter 70. The filter 70 has air permeability, and dust and the like of air passing through the filter 70 are captured by the filter 70.

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

A collection gauze 50 is wound around the upper portion of the cylindrical body 40. Thereby, the flexible collection gauze 50 is maintained in the cylindrical shape, and the central axis of the collection gauze 50 is installed vertically.
Since the cylinder body 40 is net-like, a large number of ventilation holes are formed in the cylinder body 40. Therefore, even if the collection gauze 50 is wound around the cylinder 40, the air permeability of the collection gauze 50 is ensured.
The collection gauze 50 is spaced upward from the outer peripheral surface 31 of the holder 30, and the cylindrical body 40 is exposed on the lower side of the collection gauze 50. Therefore, between the collection gauze 50 and the holder 30, the space inside the cylinder 40 and the space outside are communicated by the vent hole of the cylinder 40.

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

  The control panel 90 includes a power source (for example, a photovoltaic power generation cell, a primary battery, a secondary battery, and a power circuit), a control circuit, and the like. When the power source is a solar power generation cell, the solar 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 measurement 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 changes the operating state of the blower 80 and the measurement circuit 65 for a predetermined time (the predetermined time is Shorter than the predetermined period, for example, 1 minute.) After holding, the blower 80 and the measuring 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. In addition, the operation time of each time of the air blower 80 and the measurement circuit 65 is shorter than the stop time of each time of the air blower 80 and the measurement circuit 65.

  The control panel 90 may include 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 a recording medium in association with the measurement time (the operation time of the measurement circuit 65).

2. How to Use Observation Device and Operational Effects The observation device 10 is installed at a measurement place such as outdoors so that the central axes of the shielding box 1 and the cylinder 40 are vertical. Since the temperature / humidity measuring device 60 and the collection gauze 50 are accommodated 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 The installation space can be saved.
Sunlight is shielded by the louver 2 during fine weather, and rainwater is blocked by the louver 2 during rain.
After the observation apparatus 10 is installed, 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 is a gap between the adjacent armor plates of the louver 2, the wind blows through the gap from the outside of the shielding box 1 to the outside through the inside. 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. And since the collection gauze 50 is hold | maintained in the state stood cylindrically with the cylinder 40 in the center of the shielding box 1, the collection gauze 50 is the salt which has come to the shielding box 1 regardless of the direction of flight. Adhere to. The amount of salt attached to the collection gauze 50 depends on the wind speed of the wind blowing through the shielding box 1 and the salt density in the air.

  Since the filter 70 is disposed inside the collection gauze 50, the air salt density becomes low inside the collection gauze 50 while the blower 80 is stopped, and salt hardly adheres to the filter 70. On the other hand, during the operation of the blower 80, the air flows from the upper side of the cylindrical body 40 to the inner side of the cylindrical body 40 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 content attached to the collection gauze 50. Further, since the salt content 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 that flows to the inside of the cylinder 40 by the blower 80 passes through the portion of the cylinder 40 between the collection gauze 50 and the holder 30 from the inside to the outside. Therefore, it is possible to prevent the salt attached to the collection gauze 50 from being separated from the collection gauze 50 by forced convection of the blower 80.

3. Modifications As mentioned above, although the form for implementing this invention was demonstrated, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed and improved without departing from the gist thereof, and equivalents thereof are also included in the present invention. Changes from the above embodiment will be described below. The changes described below may be applied in combination as much as possible.

(1) In the said embodiment, although the cylinder 40 was formed in cylindrical shape, the cylinder 40 may be formed in other cylinder shapes, such as a rectangular tube shape.

(2) The observation apparatus main body 20 may be installed in the shielding box 1 so as to be turned upside down.

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

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

  DESCRIPTION OF SYMBOLS 1 ... Shielding box, 10 ... Observation apparatus, 40 ... Cylindrical body, 50 ... Collecting gauze (collecting material), 63 ... Temperature sensor, 64 ... Humidity sensor, 65 ... Measuring circuit, 70 ... Filter, 80 ... Blower, 90 ... Control panel (control unit)

Claims (6)

A salt-collecting material that has air permeability and is formed into a tubular shape,
A humidity sensor disposed inside the collecting material;
An observation apparatus comprising: a blower that blows air inside the collection material.   The observation apparatus according to claim 1, wherein the blower is disposed on a central axis direction side of the collecting material, and a blowing direction of the blower is the central axis direction.   The observation apparatus according to claim 1, further comprising a control unit that operates the blower intermittently.   The observation apparatus 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 said collection | acquisition material, the said humidity sensor, and the said air blower are accommodated, Sunlight is shielded, the invasion of rainwater is prevented, and the shielding box which has air permeability is further provided as described in any one of Claim 1 to 4 Observation device.   The observation device according to any one of claims 1 to 5, further comprising a temperature sensor disposed inside the collection material.

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