WO2023238665A1 - Sensor device - Google Patents

Sensor device Download PDF

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Publication number
WO2023238665A1
WO2023238665A1 PCT/JP2023/019274 JP2023019274W WO2023238665A1 WO 2023238665 A1 WO2023238665 A1 WO 2023238665A1 JP 2023019274 W JP2023019274 W JP 2023019274W WO 2023238665 A1 WO2023238665 A1 WO 2023238665A1
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WO
WIPO (PCT)
Prior art keywords
sensor
housing
sensor device
opening
case
Prior art date
Application number
PCT/JP2023/019274
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French (fr)
Japanese (ja)
Inventor
佳弘 氷見
信人 椿
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株式会社村田製作所
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Publication of WO2023238665A1 publication Critical patent/WO2023238665A1/en

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G01W1/02—Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information

Definitions

  • the present disclosure relates to a sensor device, and more particularly to a device for measuring carbon dioxide (CO2).
  • CO2 carbon dioxide
  • JP 2020-031566A discloses a sensor device used in an agricultural greenhouse.
  • the CO2 sensor is arranged in a sub-casing separate from the main casing, and the sub-casing is configured to be separable from the main casing. This makes calibration work easier.
  • Patent Document 1 In a sensor device such as that disclosed in JP-A-2020-031566 (Patent Document 1), it is necessary to take in ambient air, so an opening is generally provided in the housing. When measuring CO2 continuously outdoors, if moisture infiltrates into the housing due to wind, rain, snowfall, etc., it may cause failure of electrical equipment such as sensors or control devices.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2020-031566
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2020-031566
  • the sub-casing that houses the CO2 sensor is provided with a vent on the side. There is. Therefore, when the sensor device is used outdoors, rain or snow may enter through the vent, increasing the risk of failure.
  • the present disclosure has been made to solve such problems, and the purpose is to reduce the influence of moisture intrusion from the outside and prevent failures in a sensor device for measuring CO2 outdoors.
  • the goal is to appropriately measure CO2 while controlling it.
  • a sensor device includes a CO2 sensor configured to detect CO2, and a housing that houses the CO2 sensor inside.
  • An opening through which air from the outside can pass is formed in the bottom of the housing.
  • the CO2 sensor includes a detection section that detects CO2 and a case that houses the detection section.
  • the opening includes two or more through holes formed adjacent to each other in the first direction.
  • the case has intake holes formed to take in the surrounding air. When the housing is viewed from the bottom in plan, at least a portion of the opening overlaps with an area in the case where the intake hole is formed.
  • the opening including the plurality of through holes is formed in the bottom surface of the housing, it is possible to suppress the intrusion of rain and snow into the housing, while also preventing fresh water from outside the housing near the bottom surface. can take in fresh air. Since the intake hole of the CO2 sensor is formed at a position overlapping the bottom surface, changes in CO2 concentration around the sensor device can be measured in a timely manner.
  • FIG. 1 is a schematic diagram of a measurement system including the sensor device of Embodiment 1.
  • FIG. FIG. 2 is a plan view showing the inside of the sensor device according to the first embodiment.
  • 3 is a side view showing the inside of the sensor device of FIG. 2.
  • FIG. FIG. 3 is a bottom view of the sensor device of FIG. 2;
  • 7 is a plan view showing the inside of a sensor device according to a second embodiment.
  • FIG. 7 is a plan view showing the inside of a sensor device according to modification 1.
  • FIG. FIG. 7 is a plan view showing the inside of a sensor device according to a third embodiment.
  • FIG. 1 is a schematic diagram of a measurement system 10 including a sensor device 100 according to the first embodiment.
  • Measurement system 10 includes a sensor device 100, a terminal device 200, and a server device 250.
  • the sensor device 100 includes a CO2 sensor 110 and a housing 105 for housing the CO2 sensor 110.
  • the sensor device 100 is basically assumed to be installed outdoors, and detects the surrounding CO2 concentration using the CO2 sensor 110. Of course, it is also possible to use the sensor device 100 indoors.
  • the sensor device 100 operates by receiving AC power from an external commercial power source 50 via a power cable 51.
  • the sensor device 100 includes a communication device 130 as described later in FIG. 2, and is configured to be able to communicate with the terminal device 200 or the server device 250. Communication with the terminal device 200 or the server device 250 may be performed directly between the devices using Wi-Fi communication or the like, or may be performed through a communication network such as the Internet via an access point.
  • the sensor device 100 transmits information on the CO2 concentration detected by the CO2 sensor 110 to the terminal device 200 or the server device 250.
  • the CO2 concentration around the sensor device 100 is monitored in real time, and is stored in the storage device as historical data together with other related information every predetermined period.
  • FIG. 1 shows a configuration that includes both the server device 250 and the terminal device 200, the configuration may include only one of the server device 250 and the terminal device 200.
  • the sensor device 100 may communicate with both, or may communicate with only one.
  • the server device 250 and the terminal device 200 may exchange data with each other.
  • FIG. 2 is a plan view showing the inside of the sensor device 100.
  • FIG. 3 is a side view showing the inside of the sensor device 100.
  • FIG. 4 is a bottom view of the sensor device 100.
  • the sensor device 100 is installed on a pillar, wall, or the like with the Z-axis direction in the figures as the vertical direction.
  • the sensor device 100 further includes a power supply device 120 and a communication device 130.
  • the power supply device 120 converts AC power supplied via the power cable 51 into DC power and supplies it to the communication device 130.
  • the CO2 sensor 110 includes a detection section 115 that detects CO2 and a case 116 that covers the detection section 115.
  • the case 116 has a substantially rectangular parallelepiped shape, and has an area on one surface in which an intake hole 112 for taking in surrounding air is formed.
  • the detection unit 115 detects the CO2 concentration of the air that has passed through the intake hole 112 and entered the case 116.
  • NDIR non-dispersive infrared
  • semiconductor type semiconductor type
  • electrochemical type detector can be used as the CO2 sensor 110.
  • the CO2 sensor 110 is connected to the communication device 130, for example, by a USB (Universal Serial Bus) connector. Further, another environmental sensor 140 may be optionally connected to the communication device 130.
  • Environmental sensors 140 include, for example, temperature sensors, humidity sensors, atmospheric pressure sensors, and/or oxygen sensors.
  • the communication device 130 supplies driving power to the CO2 sensor and the environmental sensor 140, and outputs sensor information detected by each sensor to an external terminal device 200 or a server device 250 by wireless communication.
  • the housing 105 includes a main body part 1051 in which equipment such as the CO2 sensor 110 is placed, and a door part 1052 for closing the main body part 1051.
  • a door part 1052 for closing the main body part 1051.
  • Opening 150 is formed in the bottom surface 106 (that is, the surface in the negative direction of the Z-axis) through which air from the outside can pass.
  • Opening 150 includes at least two through holes 1501 and 1502.
  • the through holes 1501 and 1502 are arranged adjacent to each other in the X-axis direction on the bottom surface 106.
  • By forming two or more through holes it is possible to separate the air inflow path and the air outflow path, thereby promoting air inflow and outflow into the housing 105 and suppressing air retention within the housing 105. Thereby, changes in CO2 concentration in the surrounding air can be detected in a timely manner.
  • the opening 150 in the bottom surface 106 the structure is such that rain and snow do not easily penetrate into the housing 105.
  • a grid-like mesh 155 may be arranged in each of the through holes 1501 and 1502 to prevent insects from entering. Furthermore, a through hole (wiring hole) 151 for passing the power cable 51 is formed in the bottom surface 106 of the housing 105 at a position adjacent to the opening 150 in the X-axis direction. A plug 55 is disposed in the through hole 151 to fix the power cable 51 to the housing 105 and to fill the area around the power cable 51 in the through hole 151 .
  • the CO2 sensor 110 is arranged at a position close to the bottom surface 106, in other words, at a position closer to the bottom surface 106 than the top surface 107.
  • the housing 105 has a sealed structure with no openings other than the opening 150 on the bottom surface 106, so that there is little air inflow and outflow from the outside except for the bottom surface 106. Therefore, by arranging the CO2 sensor 110 at a position close to the bottom surface 106 where the opening 150 is formed, changes in CO2 concentration can be appropriately detected and measurement accuracy can be improved.
  • the housing 105 air heated by heat from the power supply device 120 and the like gathers on the top surface 107 side, so by arranging the CO2 sensor 110 at a position close to the bottom surface 106, the influence of this heat is reduced. be able to.
  • the intake hole 112 of the CO2 sensor 110 is preferably arranged facing the bottom surface 106 of the housing 105.
  • the intake hole 112 may be arranged on the surface of the case 116 that faces the door portion 1052 of the housing 105 or the surface in the opposite direction (that is, the surface that intersects with the Y-axis).
  • FIG. 4 when the housing 105 is viewed in plan from the bottom surface 106 side, at least a portion of the opening 150 overlaps with a region where the intake hole 112 of the CO2 sensor 110 is formed.
  • the CO2 sensor 110 is fixed to the housing 105 by a support portion 170.
  • the support portion 170 is, for example, a rod-shaped member, and forms a space between the case 116 of the CO2 sensor 110 and the inner surface of the housing 105.
  • the CO2 sensor 110 is disposed at a position separated from all inner surfaces of the housing 105 by a predetermined distance or more by the support portion 170.
  • the main body of the housing 105 is warmed by heat from the sun.
  • the support portion 170 By forming a space between the CO2 sensor 110 and the housing 105 by the support portion 170, heat transfer from the housing 105 can be suppressed, and drift etc. due to temperature rise can be suppressed.
  • the CO2 sensor is arranged at a position close to the bottom of the housing in which an opening including two or more through holes is formed in the bottom. There is.
  • the housing is viewed from the bottom, at least a portion of the opening of the housing overlaps with the area of the intake hole of the case of the CO2 sensor.
  • FIG. 5 is a plan view showing the inside of the sensor device 100A of the second embodiment.
  • a shielding portion 180 is arranged in addition to the configuration of sensor device 100 of Embodiment 1. Note that in the sensor device 100A, descriptions of elements that overlap with those in the sensor device 100 will not be repeated.
  • shielding section 180 is a flat plate formed using a conductive material such as metal, and is placed between CO2 sensor 110 and power supply device 120 to cover the upper surface of CO2 sensor 110. arranged to cover.
  • the shielding part 180 functions as a protective wall to prevent water droplets from penetrating into the CO2 sensor 110 even if water enters from the upper surface 107 side of the housing 105, and also functions as a protective wall to prevent water droplets from penetrating into the CO2 sensor 110. It also functions as an electromagnetic shield to block electromagnetic noise.
  • the shielding part 180 does not necessarily need to be made of a conductive material, and may be made of a non-conductive material such as a plastic plate if the purpose is only to prevent water droplets from penetrating. Alternatively, a metal foil may be attached to the surface of a plastic plate.
  • FIG. 6 is a plan view showing the inside of the sensor device 100B of the first modification.
  • the sensor device 100B has a configuration in which the shielding portion 180 of the sensor device 100A of the second embodiment is replaced with a shielding portion 180B.
  • the shielding part 180B is made of a conductive material such as metal like the shielding part 180, and has a box shape with the bottom surface 106 side open. That is, the shielding part 180B covers the upper surface side of the CO2 sensor 110 and also extends to the side surface side of the CO2 sensor 110.
  • FIG. 7 is a plan view showing the inside of the sensor device 100C according to the third embodiment.
  • a battery 125 is arranged in place of the power supply device 120 in the sensor device 100 of the first embodiment, and DC power from the battery 125 is supplied to the CO2 sensor 110 and the communication device 130.
  • the power cable 51 for transmitting power from the outside is not required, so the through hole 151 for passing the power cable 51 is not formed in the bottom surface 106 of the housing 105.
  • the senor device can be used even in an outdoor environment where there is no external power source nearby.
  • a lattice-like mesh 155 is arranged to prevent insects from entering, but the mesh 155 is made of a material with a fine mesh that allows gas to pass through but does not allow water droplets to pass through. may also be used.
  • a mesh structure that does not allow moisture to pass through for example, even if the sensor device 100 is placed in an area along the coast, it is possible to prevent seawater from entering the housing 105, thereby preventing the CO2 sensor 110 from being damaged by salt damage.
  • the power supply device 120 and the communication device 130 can be used without corrosion.
  • a vibration device configured to apply vibration to the mesh 155 by operating with a motor or the like may be provided near the mesh 155 of the first embodiment. By periodically operating this vibrating device by driving a timer, dirt and dust attached to the mesh 155 can be shaken off. This makes it possible to suppress a decrease in the amount of outside air flowing into the housing 105 due to clogging of the mesh 155.
  • a sensor device includes a CO2 sensor configured to detect carbon dioxide (CO2) and a housing that houses the CO2 sensor therein.
  • An opening through which air from the outside can pass is formed in the bottom of the housing.
  • the CO2 sensor includes a detection section that detects CO2 and a case that houses the detection section.
  • the opening includes two or more through holes formed adjacent to each other in the first direction.
  • the case has intake holes formed to take in the surrounding air.
  • the housing has an upper surface facing the bottom surface.
  • the CO2 sensor is located inside the housing at a position closer to the bottom than the top.
  • the sensor device according to Item 3 further includes a shielding portion disposed between the upper surface inside the housing and the CO2 sensor so as to cover the upper surface side of the CO2 sensor.
  • the shielding portion also extends to the side surface of the CO2 sensor.
  • the shielding portion is formed of a conductive material.
  • the shielding portion is made of metal.
  • the sensor device according to any one of Items 1 to 7 further includes a support portion for fixing the CO2 sensor inside the housing.
  • the CO2 sensor is arranged at a position separated from all inner surfaces of the housing by a predetermined distance or more by the support portion.
  • the sensor device according to any one of Items 1 to 8 further includes a communication device arranged inside the housing and for wirelessly transmitting a detection signal of the CO2 sensor to an external device. Be prepared.
  • the sensor device further includes a power supply device that is disposed inside the housing and receives AC power supplied from the outside via a power cable and supplies driving power to the communication device. .
  • the power cable enters the housing through a wiring hole formed adjacent to the opening in the first direction on the bottom surface.
  • the sensor device further includes a battery disposed inside the housing and for supplying driving power to the communication device.
  • the sensor device according to any one of Items 1 to 12 further includes a mesh arranged to cover the opening.
  • the sensor device according to Item 13 further includes a vibration device configured to apply vibration to the mesh.
  • Measurement system 50 Commercial power supply, 51 Power cable, 55 Plug, 100, 100A to 100C sensor device, 105 Housing, 1051 Main body, 1052 Door, 106 Bottom, 107 Top, 110 Sensor, 112 Intake hole, 115 Detection Department , 116 case, 120 power supply device, 125 battery, 130 communication device, 140 environment sensor, 150 opening, 151, 1501, 1502 through hole, 155 mesh, 170 support section, 180, 180B shielding section, 200 terminal device, 250 server Device.

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Abstract

A sensor device (100) comprises a CO2 sensor (110) and a housing (105) that houses the CO2 sensor (110) therein. An opening (150) configured to allow air from the outside to pass therethrough is formed in the bottom surface (106) of the housing (105). The CO2 sensor (110) includes a detection unit (115) that detects CO2 and a case (116) that houses the detection unit (115). The opening (150) includes two or more through holes (1501, 1502) formed adjacent to each other in a first direction. An air intake hole (112) for drawing in ambient air is formed in the case (116). In a plan view of the housing (105) from the bottom surface (106), at least a portion of the opening (150) overlaps an area where the air intake hole (112) is formed in the case (116).

Description

センサ装置sensor device
　本開示はセンサ装置に関し、より特定的には、二酸化炭素（ＣＯ２）を測定するための装置に関する。 The present disclosure relates to a sensor device, and more particularly to a device for measuring carbon dioxide (CO2).
　特開２０２０－０３１５６６号公報（特許文献１）には、農業用ハウス内で使用されるセンサ装置が開示されている。特開２０２０－０３１５６６号公報（特許文献１）においては、主ケーシングとは別個の副ケーシング内にＣＯ２センサを配置し、当該副ケーシングを主ケーシングから分離可能な構成とすることによって、ＣＯ２センサの校正作業を容易としている。 JP 2020-031566A (Patent Document 1) discloses a sensor device used in an agricultural greenhouse. In Japanese Unexamined Patent Publication No. 2020-031566 (Patent Document 1), the CO2 sensor is arranged in a sub-casing separate from the main casing, and the sub-casing is configured to be separable from the main casing. This makes calibration work easier.
特開２０２０－０３１５６６号公報JP2020-031566A
　特開２０２０－０３１５６６号公報（特許文献１）に開示されているようなセンサ装置においては、周囲の空気を取り込むことが必要であるため、一般的には筐体に開口部が設けられる。屋外においてＣＯ２を連続的に測定する場合、風雨あるいは降雪などにより筐体内に水分が浸入すると、センサあるいは制御装置などの電気機器の故障の要因となり得る。 In a sensor device such as that disclosed in JP-A-2020-031566 (Patent Document 1), it is necessary to take in ambient air, so an opening is generally provided in the housing. When measuring CO2 continuously outdoors, if moisture infiltrates into the housing due to wind, rain, snowfall, etc., it may cause failure of electrical equipment such as sensors or control devices.
　特開２０２０－０３１５６６号公報（特許文献１）のセンサ装置は、農業用ハウス内での使用が前提とされており、ＣＯ２センサを収納する副ケーシングについては、その側面に通気口が設けられている。したがって、当該センサ装置を屋外で使用した場合には、当該通気口から雨あるいは雪が浸入してしまい、故障のリスクが高くなる。 The sensor device disclosed in Japanese Unexamined Patent Publication No. 2020-031566 (Patent Document 1) is intended to be used inside an agricultural greenhouse, and the sub-casing that houses the CO2 sensor is provided with a vent on the side. There is. Therefore, when the sensor device is used outdoors, rain or snow may enter through the vent, increasing the risk of failure.
　一方で、ケーシングを密閉に近い構造とすると、ケーシング内に空気がこもってしまい、外部のＣＯ２の濃度変化を適切に測定できない可能性がある。 On the other hand, if the casing has a nearly airtight structure, air will become trapped inside the casing, and there is a possibility that changes in the concentration of CO2 outside cannot be measured appropriately.
　本開示は、このような課題を解決するためになされたものであって、その目的は、屋外においてＣＯ２を測定するためのセンサ装置において、外部からの水分の浸入による影響を低減して故障を抑制しつつ、適切にＣＯ２を測定することである。 The present disclosure has been made to solve such problems, and the purpose is to reduce the influence of moisture intrusion from the outside and prevent failures in a sensor device for measuring CO2 outdoors. The goal is to appropriately measure CO2 while controlling it.
　本開示に係るセンサ装置は、ＣＯ２を検出するように構成されたＣＯ２センサと、ＣＯ２センサを内部に収納するハウジングとを備える。ハウジングの底面には、外部からの空気が通過可能に構成された開口部が形成されている。ＣＯ２センサは、ＣＯ２を検出する検出部と、検出部を収納するケースとを含む。開口部は、第１方向に隣接して形成された２つ以上の貫通孔を含む。ケースには、周囲の空気を取り込むための吸気孔が形成されている。ハウジングを底面から平面視した場合に、開口部の少なくとも一部は、ケースにおいて吸気孔が形成された領域と重なっている。 A sensor device according to the present disclosure includes a CO2 sensor configured to detect CO2, and a housing that houses the CO2 sensor inside. An opening through which air from the outside can pass is formed in the bottom of the housing. The CO2 sensor includes a detection section that detects CO2 and a case that houses the detection section. The opening includes two or more through holes formed adjacent to each other in the first direction. The case has intake holes formed to take in the surrounding air. When the housing is viewed from the bottom in plan, at least a portion of the opening overlaps with an area in the case where the intake hole is formed.
　本開示に係るセンサ装置においては、ハウジングの底面に複数の貫通孔を含む開口部が形成されているため、ハウジング内への雨および雪の浸入を抑制しつつ、当該底面付近においてハウジング外部の新鮮な空気を取り込むことができる。そして、当該底面と重複する位置に、ＣＯ２センサの吸気孔が形成されているため、センサ装置の周囲のＣＯ２濃度変化を適時に測定することができる。 In the sensor device according to the present disclosure, since the opening including the plurality of through holes is formed in the bottom surface of the housing, it is possible to suppress the intrusion of rain and snow into the housing, while also preventing fresh water from outside the housing near the bottom surface. can take in fresh air. Since the intake hole of the CO2 sensor is formed at a position overlapping the bottom surface, changes in CO2 concentration around the sensor device can be measured in a timely manner.
実施の形態１のセンサ装置を含む測定システムの概略図である。1 is a schematic diagram of a measurement system including the sensor device of Embodiment 1. FIG. 実施の形態１のセンサ装置の内部を示す平面図である。FIG. 2 is a plan view showing the inside of the sensor device according to the first embodiment. 図２のセンサ装置の内部を示す側面図である。3 is a side view showing the inside of the sensor device of FIG. 2. FIG. 図２のセンサ装置の底面図である。FIG. 3 is a bottom view of the sensor device of FIG. 2; 実施の形態２のセンサ装置の内部を示す平面図である。7 is a plan view showing the inside of a sensor device according to a second embodiment. FIG. 変形例１のセンサ装置の内部を示す平面図である。7 is a plan view showing the inside of a sensor device according to modification 1. FIG. 実施の形態３のセンサ装置の内部を示す平面図である。FIG. 7 is a plan view showing the inside of a sensor device according to a third embodiment.
　以下、本開示の実施の形態について、図面を参照しながら詳細に説明する。なお、図中同一または相当部分には同一符号を付してその説明は繰り返さない。 Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In addition, the same reference numerals are attached to the same or corresponding parts in the drawings, and the description thereof will not be repeated.
　［実施の形態１］
　（システムの概要）
　図１は、実施の形態１のセンサ装置１００を含む測定システム１０の概略図である。測定システム１０は、センサ装置１００と、端末装置２００と、サーバ装置２５０とを含む。 [Embodiment 1]
(System overview)
FIG. 1 is a schematic diagram of a measurement system 10 including a sensor device 100 according to the first embodiment. Measurement system 10 includes a sensor device 100, a terminal device 200, and a server device 250.
　センサ装置１００は、ＣＯ２センサ１１０と、当該ＣＯ２センサ１１０を収納するための筐体（ハウジング）１０５とを含む。センサ装置１００は、基本的には屋外に設置されることを前提としており、ＣＯ２センサ１１０を用いて周囲のＣＯ２濃度を検出する。もちろん、センサ装置１００を屋内で使用することも可能である。センサ装置１００は、外部の商用電源５０からの交流電力を、電源ケーブル５１を介して受けて動作する。 The sensor device 100 includes a CO2 sensor 110 and a housing 105 for housing the CO2 sensor 110. The sensor device 100 is basically assumed to be installed outdoors, and detects the surrounding CO2 concentration using the CO2 sensor 110. Of course, it is also possible to use the sensor device 100 indoors. The sensor device 100 operates by receiving AC power from an external commercial power source 50 via a power cable 51.
　また、センサ装置１００は、図２で後述するように通信装置１３０を含んでおり、端末装置２００またはサーバ装置２５０と通信可能に構成される。端末装置２００またはサーバ装置２５０との通信は、Ｗｉ－ｆｉ通信等により機器同士で直接行なってもよいし、アクセスポイントを介してインターネットなどの通信ネットワークを通じて行なってもよい。 Further, the sensor device 100 includes a communication device 130 as described later in FIG. 2, and is configured to be able to communicate with the terminal device 200 or the server device 250. Communication with the terminal device 200 or the server device 250 may be performed directly between the devices using Wi-Fi communication or the like, or may be performed through a communication network such as the Internet via an access point.
　センサ装置１００は、ＣＯ２センサ１１０で検出したＣＯ２濃度の情報を、端末装置２００またはサーバ装置２５０へ送信する。端末装置２００またはサーバ装置２５０においては、センサ装置１００の周囲のＣＯ２濃度をリアルタイムでモニターするとともに、所定の期間ごとに他の関連する情報とともに履歴データとして記憶装置に記憶する。なお、図１においては、サーバ装置２５０および端末装置２００の双方が含まれる構成となっているが、サーバ装置２５０および端末装置２００のいずれか一方のみが含まれる構成であってもよい。また、双方が含まれる場合に、センサ装置１００が双方と通信してもよいし、いずれか一方のみと通信してもよい。また、サーバ装置２５０と端末装置２００とが、互いにデータの送受信を行なってもよい。 The sensor device 100 transmits information on the CO2 concentration detected by the CO2 sensor 110 to the terminal device 200 or the server device 250. In the terminal device 200 or the server device 250, the CO2 concentration around the sensor device 100 is monitored in real time, and is stored in the storage device as historical data together with other related information every predetermined period. Note that although FIG. 1 shows a configuration that includes both the server device 250 and the terminal device 200, the configuration may include only one of the server device 250 and the terminal device 200. Moreover, when both are included, the sensor device 100 may communicate with both, or may communicate with only one. Further, the server device 250 and the terminal device 200 may exchange data with each other.
　（センサ装置の詳細）
　次に、図２～図４を用いて、実施の形態１におけるセンサ装置１００の詳細について説明する。図２は、センサ装置１００の内部を示す平面図である。図３は、センサ装置１００の内部を示す側面図である。図４は、センサ装置１００の底面図である。 (Details of sensor device)
Next, details of the sensor device 100 in the first embodiment will be described using FIGS. 2 to 4. FIG. 2 is a plan view showing the inside of the sensor device 100. FIG. 3 is a side view showing the inside of the sensor device 100. FIG. 4 is a bottom view of the sensor device 100.
　図２～図４を参照して、センサ装置１００は、図のＺ軸方向を鉛直方向として、柱あるいは壁面等に設置される。センサ装置１００は、ハウジング１０５およびＣＯ２センサ１１０に加えて、電源装置１２０と、通信装置１３０とをさらに含む。 Referring to FIGS. 2 to 4, the sensor device 100 is installed on a pillar, wall, or the like with the Z-axis direction in the figures as the vertical direction. In addition to the housing 105 and the CO2 sensor 110, the sensor device 100 further includes a power supply device 120 and a communication device 130.
　電源装置１２０は、電源ケーブル５１を介して供給された交流電力を直流電力に変換して通信装置１３０に供給する。 The power supply device 120 converts AC power supplied via the power cable 51 into DC power and supplies it to the communication device 130.
　ＣＯ２センサ１１０は、ＣＯ２を検出する検出部１１５と、検出部１１５を覆うケース１１６とを含む。ケース１１６は、略直方体形状を有しており、そのうちの１面に、周囲の空気を取り込むための吸気孔１１２が形成された領域を有している。検出部１１５は、吸気孔１１２を通過してケース１１６内部に進入した空気のＣＯ２濃度を検出する。ＣＯ２センサ１１０として、たとえば、非分散型赤外線（ＮＤＩＲ：Non-Dispersive　InfraRed）方式、半導体方式、あるいは、電気化学方式の検出器を用いることができる。 The CO2 sensor 110 includes a detection section 115 that detects CO2 and a case 116 that covers the detection section 115. The case 116 has a substantially rectangular parallelepiped shape, and has an area on one surface in which an intake hole 112 for taking in surrounding air is formed. The detection unit 115 detects the CO2 concentration of the air that has passed through the intake hole 112 and entered the case 116. As the CO2 sensor 110, for example, a non-dispersive infrared (NDIR) type, semiconductor type, or electrochemical type detector can be used.
　通信装置１３０には、たとえばＵＳＢ（Universal　Serial　Bus）コネクタによってＣＯ２センサ１１０が接続される。また、通信装置１３０には、任意的に、他の環境センサ１４０が接続されてもよい。環境センサ１４０としては、たとえば、温度センサ、湿度センサ、気圧センサおよび／または酸素センサなどが含まれる。通信装置１３０は、ＣＯ２センサおよび環境センサ１４０に駆動電力を供給するとともに、各センサにより検出されたセンサ情報を、無線通信により、外部の端末装置２００またはサーバ装置２５０へ出力する。 The CO2 sensor 110 is connected to the communication device 130, for example, by a USB (Universal Serial Bus) connector. Further, another environmental sensor 140 may be optionally connected to the communication device 130. Environmental sensors 140 include, for example, temperature sensors, humidity sensors, atmospheric pressure sensors, and/or oxygen sensors. The communication device 130 supplies driving power to the CO2 sensor and the environmental sensor 140, and outputs sensor information detected by each sensor to an external terminal device 200 or a server device 250 by wireless communication.
　ハウジング１０５は、ＣＯ２センサ１１０等の機器が配置される本体部１０５１と、本体部１０５１を閉止するための扉部１０５２とを含む。扉部１０５２が閉止されている場合には、本体部１０５１と扉部１０５２との間から水等が浸入しないように、密閉される構造となっている。 The housing 105 includes a main body part 1051 in which equipment such as the CO2 sensor 110 is placed, and a door part 1052 for closing the main body part 1051. When the door section 1052 is closed, the structure is sealed so that water or the like does not enter between the main body section 1051 and the door section 1052.
　ハウジング１０５が壁面等に配置された場合の底面１０６（すなわち、Ｚ軸の負方向の面）には、外部からの空気が通過可能に構成された開口部１５０が形成されている。開口部１５０は、少なくとも２つの貫通孔１５０１，１５０２を含む。貫通孔１５０１，１５０２は、底面１０６においてＸ軸方向に隣接して配置されている。２つ以上の貫通孔を形成することによって、空気の流入経路と流出経路を分離できるため、ハウジング１０５内部への空気の流入および流出が促進されてハウジング１０５内における空気の滞留が抑制される。これにより、周囲の空気のＣＯ２濃度変化を適時に検出することができる。また、開口部１５０を底面１０６に形成することによって、降雨および降雪がハウジング１０５内に浸入しにくい構造となっている。 When the housing 105 is placed on a wall or the like, an opening 150 is formed in the bottom surface 106 (that is, the surface in the negative direction of the Z-axis) through which air from the outside can pass. Opening 150 includes at least two through holes 1501 and 1502. The through holes 1501 and 1502 are arranged adjacent to each other in the X-axis direction on the bottom surface 106. By forming two or more through holes, it is possible to separate the air inflow path and the air outflow path, thereby promoting air inflow and outflow into the housing 105 and suppressing air retention within the housing 105. Thereby, changes in CO2 concentration in the surrounding air can be detected in a timely manner. Further, by forming the opening 150 in the bottom surface 106, the structure is such that rain and snow do not easily penetrate into the housing 105.
　貫通孔１５０１，１５０２の各々には、虫等の侵入を防止するために、格子状のメッシュ１５５を配置してもよい。また、ハウジング１０５の底面１０６には、開口部１５０に対してＸ軸方向に隣接した位置に、電源ケーブル５１を通すための貫通孔（配線孔）１５１が形成されている。貫通孔１５１の部分には、電源ケーブル５１をハウジング１０５に固定するとともに、貫通孔１５１における電源ケーブル５１の周囲を埋めるためのプラグ５５が配置されている。 A grid-like mesh 155 may be arranged in each of the through holes 1501 and 1502 to prevent insects from entering. Furthermore, a through hole (wiring hole) 151 for passing the power cable 51 is formed in the bottom surface 106 of the housing 105 at a position adjacent to the opening 150 in the X-axis direction. A plug 55 is disposed in the through hole 151 to fix the power cable 51 to the housing 105 and to fill the area around the power cable 51 in the through hole 151 .
　ハウジング１０５の内部において、ＣＯ２センサ１１０は、底面１０６に近接した位置、言い換えれば、上面１０７よりも底面１０６に近い位置に配置されている。上述のように、ハウジング１０５は、底面１０６の開口部１５０以外の部分には開口がなく密閉構造となっているため、底面１０６を除き外部からの空気の流入および流出が少ない。そのため、開口部１５０が形成された底面１０６に近い位置にＣＯ２センサ１１０を配置することで、ＣＯ２濃度変化を適切に検出することができ、測定精度を向上させることができる。また、ハウジング１０５内において、電源装置１２０等からの熱により温められた空気は上面１０７側に集まるため、底面１０６に近い位置にＣＯ２センサ１１０を配置することで、これらの熱の影響を低減することができる。 Inside the housing 105, the CO2 sensor 110 is arranged at a position close to the bottom surface 106, in other words, at a position closer to the bottom surface 106 than the top surface 107. As described above, the housing 105 has a sealed structure with no openings other than the opening 150 on the bottom surface 106, so that there is little air inflow and outflow from the outside except for the bottom surface 106. Therefore, by arranging the CO2 sensor 110 at a position close to the bottom surface 106 where the opening 150 is formed, changes in CO2 concentration can be appropriately detected and measurement accuracy can be improved. Furthermore, in the housing 105, air heated by heat from the power supply device 120 and the like gathers on the top surface 107 side, so by arranging the CO2 sensor 110 at a position close to the bottom surface 106, the influence of this heat is reduced. be able to.
　ＣＯ２センサ１１０の吸気孔１１２は、ハウジング１０５の底面１０６に面して配置されることが好ましい。なお、吸気孔１１２は、ケース１１６における、ハウジング１０５の扉部１０５２に対向する面あるいはその反対方向の面（すなわち、Ｙ軸に交差する面）に配置されていてもよい。また、図４に示されるように、ハウジング１０５を底面１０６側から平面視した場合に、開口部１５０の少なくとも一部は、ＣＯ２センサ１１０の吸気孔１１２が形成された領域と重なっている。ＣＯ２センサ１１０の吸気孔１１２をこのような配置とすることによって、ハウジング１０５内に流入した外部からの空気をケース１１６内に取り込みやすくすることができる。 The intake hole 112 of the CO2 sensor 110 is preferably arranged facing the bottom surface 106 of the housing 105. Note that the intake hole 112 may be arranged on the surface of the case 116 that faces the door portion 1052 of the housing 105 or the surface in the opposite direction (that is, the surface that intersects with the Y-axis). Further, as shown in FIG. 4, when the housing 105 is viewed in plan from the bottom surface 106 side, at least a portion of the opening 150 overlaps with a region where the intake hole 112 of the CO2 sensor 110 is formed. By arranging the intake hole 112 of the CO2 sensor 110 in this manner, air from the outside that has flowed into the housing 105 can be easily taken into the case 116.
　ＣＯ２センサ１１０は、支持部１７０によってハウジング１０５に固定されている。支持部１７０は、たとえば棒状の部材であり、ＣＯ２センサ１１０のケース１１６とハウジング１０５の内面との間に空間を形成する。言い換えれば、ＣＯ２センサ１１０は、支持部１７０によって、ハウジング１０５の内側のすべての面から所定以上離隔した位置に配置されている。 The CO2 sensor 110 is fixed to the housing 105 by a support portion 170. The support portion 170 is, for example, a rod-shaped member, and forms a space between the case 116 of the CO2 sensor 110 and the inner surface of the housing 105. In other words, the CO2 sensor 110 is disposed at a position separated from all inner surfaces of the housing 105 by a predetermined distance or more by the support portion 170.
　たとえば、センサ装置１００が日なたに配置されるような場合には、太陽からの熱によってハウジング１０５本体が温められる。支持部１７０によってＣＯ２センサ１１０とハウジング１０５との間に空間を形成することによって、ハウジング１０５からの熱伝達を抑制することができ、温度上昇によるドリフト等を抑制することができる。 For example, when the sensor device 100 is placed in the sun, the main body of the housing 105 is warmed by heat from the sun. By forming a space between the CO2 sensor 110 and the housing 105 by the support portion 170, heat transfer from the housing 105 can be suppressed, and drift etc. due to temperature rise can be suppressed.
　以上のように、実施の形態１のセンサ装置においては、底面に２つ以上の貫通孔を含む開口部が形成されたハウジング内において、底面に近い位置にＣＯ２センサが配置される構成となっている。そして、ハウジングを底面から平面視した場合に、ハウジングの開口部の少なくとも一部が、ＣＯ２センサのケースの吸気孔の領域と重なっている。このような構成とすることによって、ハウジング内への雨および雪の浸入を抑制しつつ、センサ装置の周囲のＣＯ２濃度変化を適時に測定することが可能となる。 As described above, in the sensor device of Embodiment 1, the CO2 sensor is arranged at a position close to the bottom of the housing in which an opening including two or more through holes is formed in the bottom. There is. When the housing is viewed from the bottom, at least a portion of the opening of the housing overlaps with the area of the intake hole of the case of the CO2 sensor. With this configuration, it is possible to timely measure changes in CO2 concentration around the sensor device while suppressing rain and snow from entering the housing.
　［実施の形態２］
　実施の形態２においては、ＣＯ２センサ１１０と電源装置１２０との間の遮蔽壁を設ける構成について説明する。 [Embodiment 2]
In the second embodiment, a configuration in which a shielding wall is provided between the CO2 sensor 110 and the power supply device 120 will be described.
　図５は、実施の形態２のセンサ装置１００Ａの内部を示す平面図である。センサ装置１００Ａにおいては、実施の形態１のセンサ装置１００の構成に加えて遮蔽部１８０が配置されている。なお、センサ装置１００Ａにおいて、センサ装置１００と重複する要素の説明は繰り返さない。 FIG. 5 is a plan view showing the inside of the sensor device 100A of the second embodiment. In sensor device 100A, in addition to the configuration of sensor device 100 of Embodiment 1, a shielding portion 180 is arranged. Note that in the sensor device 100A, descriptions of elements that overlap with those in the sensor device 100 will not be repeated.
　図５を参照して、遮蔽部１８０は、たとえば金属製のような導電性の材料を用いて形成された平板であり、ＣＯ２センサ１１０と電源装置１２０との間において、ＣＯ２センサ１１０の上面を覆うように配置されている。遮蔽部１８０は、ハウジング１０５の上面１０７側から水分の浸入があった場合でも、ＣＯ２センサ１１０への水滴の浸透を防止するための保護壁として機能するとともに、電源装置１２０および通信装置１３０で生じる電磁ノイズを遮蔽するための電磁シールドとしても機能する。 Referring to FIG. 5, shielding section 180 is a flat plate formed using a conductive material such as metal, and is placed between CO2 sensor 110 and power supply device 120 to cover the upper surface of CO2 sensor 110. arranged to cover. The shielding part 180 functions as a protective wall to prevent water droplets from penetrating into the CO2 sensor 110 even if water enters from the upper surface 107 side of the housing 105, and also functions as a protective wall to prevent water droplets from penetrating into the CO2 sensor 110. It also functions as an electromagnetic shield to block electromagnetic noise.
　なお、遮蔽部１８０は、必ずしも導電性の材料でなくてもよく、水滴の浸透の防止のみを目的とする場合には、プラスチック板のような非導電体であってもよい。あるいは、プラスチック板の表面に金属箔を貼付したものであってもよい。 Note that the shielding part 180 does not necessarily need to be made of a conductive material, and may be made of a non-conductive material such as a plastic plate if the purpose is only to prevent water droplets from penetrating. Alternatively, a metal foil may be attached to the surface of a plastic plate.
　このような遮蔽部１８０を配置することによって、ハウジング１０５に浸入した水分の影響を低減するとともに、ハウジング１０５の内部におけるＣＯ２センサ１１０への電磁ノイズの影響を低減することができる。 By arranging such a shielding part 180, it is possible to reduce the influence of moisture that has entered the housing 105, and also to reduce the influence of electromagnetic noise on the CO2 sensor 110 inside the housing 105.
　（変形例１）
　図６は、変形例１のセンサ装置１００Ｂの内部を示す平面図である。センサ装置１００Ｂにおいては、実施の形態２のセンサ装置１００Ａの遮蔽部１８０が遮蔽部１８０Ｂに置き換わった構成となっている。 (Modification 1)
FIG. 6 is a plan view showing the inside of the sensor device 100B of the first modification. The sensor device 100B has a configuration in which the shielding portion 180 of the sensor device 100A of the second embodiment is replaced with a shielding portion 180B.
　遮蔽部１８０Ｂは、遮蔽部１８０と同様に金属製のような導電性の材料で形成されており、底面１０６側が開放された箱形状を有している。すなわち、遮蔽部１８０Ｂは、ＣＯ２センサ１１０の上面側を覆うとともに、ＣＯ２センサ１１０の側面側にも延在している。 The shielding part 180B is made of a conductive material such as metal like the shielding part 180, and has a box shape with the bottom surface 106 side open. That is, the shielding part 180B covers the upper surface side of the CO2 sensor 110 and also extends to the side surface side of the CO2 sensor 110.
　このような構成とすることによって、ＣＯ２センサ１１０の上面側からの水分の影響および電磁ノイズの影響の低減に加えて、ＣＯ２センサ１１０の側面からの電磁ノイズの影響をさらに低減することができる。 With such a configuration, in addition to reducing the influence of moisture and electromagnetic noise from the top side of the CO2 sensor 110, it is possible to further reduce the influence of electromagnetic noise from the side of the CO2 sensor 110.
　［実施の形態３］
　上記のセンサ装置においては、外部からの交流電力を用いて、内部機器を駆動する構成について説明した。実施の形態３においては、ハウジング１０５の内部に配置されたバッテリからの直流電力を用いて内部機器を駆動する構成について説明する。 [Embodiment 3]
In the above sensor device, a configuration has been described in which internal equipment is driven using external AC power. In the third embodiment, a configuration will be described in which internal equipment is driven using DC power from a battery placed inside the housing 105.
　図７は、実施の形態３のセンサ装置１００Ｃの内部を示す平面図である。センサ装置１００Ｃにおいては、実施の形態１のセンサ装置１００における電源装置１２０に代えてバッテリ１２５が配置されており、当該バッテリ１２５からの直流電力がＣＯ２センサ１１０および通信装置１３０に供給されている。 FIG. 7 is a plan view showing the inside of the sensor device 100C according to the third embodiment. In the sensor device 100C, a battery 125 is arranged in place of the power supply device 120 in the sensor device 100 of the first embodiment, and DC power from the battery 125 is supplied to the CO2 sensor 110 and the communication device 130.
　センサ装置１００Ｃにおいては、外部からの電力を伝達するための電源ケーブル５１が不要となるため、ハウジング１０５の底面１０６には、電源ケーブル５１を通すための貫通孔１５１は形成されていない。 In the sensor device 100C, the power cable 51 for transmitting power from the outside is not required, so the through hole 151 for passing the power cable 51 is not formed in the bottom surface 106 of the housing 105.
　このような構成においては、バッテリ１２５の充電あるいは交換が必要にはなるものの、外部からの電力供給が不要となるため、周囲に外部電源のない屋外環境においてもセンサ装置を使用することができる。 In such a configuration, although it is necessary to charge or replace the battery 125, there is no need for an external power supply, so the sensor device can be used even in an outdoor environment where there is no external power source nearby.
　［変形例２］
　実施の形態１においては、虫等の侵入を防止するために、格子状のメッシュ１５５を配置していたが、このメッシュ１５５として、網目が細かく気体は通すことはできるが、水滴は通さない素材を用いてもよい。このように水分を通さない構造のメッシュを用いることによって、たとえば海岸沿いの地域に当該センサ装置１００を配置した場合でも、ハウジング１０５内への海水の浸入が防止できるため、塩害によってＣＯ２センサ１１０や電源装置１２０、通信装置１３０が腐食することなく使用することができる。 [Modification 2]
In the first embodiment, a lattice-like mesh 155 is arranged to prevent insects from entering, but the mesh 155 is made of a material with a fine mesh that allows gas to pass through but does not allow water droplets to pass through. may also be used. By using a mesh structure that does not allow moisture to pass through, for example, even if the sensor device 100 is placed in an area along the coast, it is possible to prevent seawater from entering the housing 105, thereby preventing the CO2 sensor 110 from being damaged by salt damage. The power supply device 120 and the communication device 130 can be used without corrosion.
　また、実施の形態１のメッシュ１５５の近辺にモータ等で動作することによって、メッシュ１５５に振動を与えるように構成された振動装置を設けてもよい。この振動装置をタイマー駆動によって定期的に動作させることによって、メッシュ１５５に付着したゴミや埃を振るい落すことができる。これによって、メッシュ１５５の目詰まりによるハウジング１０５内への外気の流入量の減少を抑えることができる。 Further, a vibration device configured to apply vibration to the mesh 155 by operating with a motor or the like may be provided near the mesh 155 of the first embodiment. By periodically operating this vibrating device by driving a timer, dirt and dust attached to the mesh 155 can be shaken off. This makes it possible to suppress a decrease in the amount of outside air flowing into the housing 105 due to clogging of the mesh 155.
　［態様］
　（第１項）一態様に係るセンサ装置は、二酸化炭素（ＣＯ２）を検出するように構成されたＣＯ２センサと、ＣＯ２センサを内部に収納するハウジングとを備える。ハウジングの底面には、外部からの空気が通過可能に構成された開口部が形成されている。ＣＯ２センサは、ＣＯ２を検出する検出部と、検出部を収納するケースとを含む。開口部は、第１方向に隣接して形成された２つ以上の貫通孔を含む。ケースには、周囲の空気を取り込むための吸気孔が形成されている。ハウジングを底面から平面視した場合に、開口部の少なくとも一部は、ケースにおいて吸気孔が形成された領域と重なっている。 [Mode]
(Section 1) A sensor device according to one embodiment includes a CO2 sensor configured to detect carbon dioxide (CO2) and a housing that houses the CO2 sensor therein. An opening through which air from the outside can pass is formed in the bottom of the housing. The CO2 sensor includes a detection section that detects CO2 and a case that houses the detection section. The opening includes two or more through holes formed adjacent to each other in the first direction. The case has intake holes formed to take in the surrounding air. When the housing is viewed from the bottom in plan, at least a portion of the opening overlaps with an area in the case where the intake hole is formed.
　（第２項）第１項に記載のセンサ装置において、ＣＯ２センサは、吸気孔がハウジングの底面に面するように配置されている。 (Section 2) In the sensor device described in Item 1, the CO2 sensor is arranged such that the intake hole faces the bottom surface of the housing.
　（第３項）第１項または第２項に記載のセンサ装置において、ハウジングは、底面に対向する上面を有している。ＣＯ２センサは、ハウジングの内部において、上面よりも底面に近い位置に配置されている。 (Section 3) In the sensor device according to Item 1 or 2, the housing has an upper surface facing the bottom surface. The CO2 sensor is located inside the housing at a position closer to the bottom than the top.
　（第４項）第３項に記載のセンサ装置は、ハウジングの内部の上面とＣＯ２センサとの間において、ＣＯ２センサの上面側を覆うように配置された遮蔽部をさらに備える。 (Section 4) The sensor device according to Item 3 further includes a shielding portion disposed between the upper surface inside the housing and the CO2 sensor so as to cover the upper surface side of the CO2 sensor.
　（第５項）第４項に記載のセンサ装置において、遮蔽部は、ＣＯ２センサの側面側にも延在している。 (Section 5) In the sensor device according to Item 4, the shielding portion also extends to the side surface of the CO2 sensor.
　（第６項）第４項または第５項に記載のセンサ装置において、遮蔽部は、導電性の材料で形成されている。 (Section 6) In the sensor device according to Item 4 or 5, the shielding portion is formed of a conductive material.
　（第７項）第６項に記載のセンサ装置において、遮蔽部は、金属製である。
　（第８項）第１項～第７項のいずれか１項に記載のセンサ装置は、ＣＯ２センサをハウジングの内部に固定するための支持部をさらに備える。ＣＯ２センサは、支持部によって、ハウジングの内側のすべての面から所定以上離隔した位置に配置される。 (Section 7) In the sensor device according to Item 6, the shielding portion is made of metal.
(Section 8) The sensor device according to any one of Items 1 to 7 further includes a support portion for fixing the CO2 sensor inside the housing. The CO2 sensor is arranged at a position separated from all inner surfaces of the housing by a predetermined distance or more by the support portion.
　（第９項）第１項～第８項のいずれか１項に記載のセンサ装置は、ハウジングの内部に配置され、ＣＯ２センサの検出信号を外部機器に無線で送信するための通信装置をさらに備える。 (Section 9) The sensor device according to any one of Items 1 to 8 further includes a communication device arranged inside the housing and for wirelessly transmitting a detection signal of the CO2 sensor to an external device. Be prepared.
　（第１０項）第９項に記載のセンサ装置は、ハウジングの内部に配置され、外部から電源ケーブルによって供給された交流電力を受けて通信装置に駆動電力を供給するための電源装置をさらに備える。電源ケーブルは、底面において、開口部に対して第１方向に隣接して形成された配線孔を通ってハウジング内に進入している。 (Section 10) The sensor device according to Item 9 further includes a power supply device that is disposed inside the housing and receives AC power supplied from the outside via a power cable and supplies driving power to the communication device. . The power cable enters the housing through a wiring hole formed adjacent to the opening in the first direction on the bottom surface.
　（第１１項）第９項に記載のセンサ装置は、ハウジングの内部に配置され、通信装置に駆動電力を供給するためのバッテリをさらに備える。 (Section 11) The sensor device according to Item 9 further includes a battery disposed inside the housing and for supplying driving power to the communication device.
　（第１２項）第１項～第１１項のいずれか１項に記載のセンサ装置において、ハウジングの底面のみに開口部が形成されている。 (Section 12) In the sensor device according to any one of Items 1 to 11, an opening is formed only on the bottom surface of the housing.
　（第１３項）第１項～第１２項のいずれか１項に記載のセンサ装置は、開口部を覆うように配置されたメッシュをさらに備える。 (Section 13) The sensor device according to any one of Items 1 to 12 further includes a mesh arranged to cover the opening.
　（第１４項）第１３項に記載のセンサ装置は、メッシュに振動を与えるように構成された振動装置をさらに備える。 (Section 14) The sensor device according to Item 13 further includes a vibration device configured to apply vibration to the mesh.
　今回開示された実施の形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施の形態の説明ではなくて請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims rather than the description of the embodiments described above, and it is intended that equivalent meanings and all changes within the scope of the claims are included.
　１０　測定システム、５０　商用電源、５１　電源ケーブル、５５　プラグ、１００，１００Ａ～１００Ｃ　センサ装置、１０５　ハウジング、１０５１　本体部、１０５２　扉部、１０６　底面、１０７　上面、１１０　センサ、１１２　吸気孔、１１５　検出部、１１６　ケース、１２０　電源装置、１２５　バッテリ、１３０　通信装置、１４０　環境センサ、１５０　開口部、１５１，１５０１，１５０２　貫通孔、１５５　メッシュ、１７０　支持部、１８０，１８０Ｂ　遮蔽部、２００　端末装置、２５０　サーバ装置。 10 Measurement system, 50 Commercial power supply, 51 Power cable, 55 Plug, 100, 100A to 100C sensor device, 105 Housing, 1051 Main body, 1052 Door, 106 Bottom, 107 Top, 110 Sensor, 112 Intake hole, 115 Detection Department , 116 case, 120 power supply device, 125 battery, 130 communication device, 140 environment sensor, 150 opening, 151, 1501, 1502 through hole, 155 mesh, 170 support section, 180, 180B shielding section, 200 terminal device, 250 server Device.

Claims (14)

  1. 　二酸化炭素（ＣＯ２）を検出するように構成されたＣＯ２センサと、
    　前記ＣＯ２センサを内部に収納するハウジングとを備え、
    　前記ハウジングの底面には、外部からの空気が通過可能に構成された開口部が形成されており、
    　前記ＣＯ２センサは、
    　　ＣＯ２を検出する検出部と、
    　　前記検出部を収納するケースとを含み、
    　前記開口部は、第１方向に隣接して形成された２つ以上の貫通孔を含み、
    　前記ケースには、周囲の空気を取り込むための吸気孔が形成されており、
    　前記ハウジングを前記底面から平面視した場合に、前記開口部の少なくとも一部は、前記ケースにおいて前記吸気孔が形成された領域と重なっている、センサ装置。     a CO2 sensor configured to detect carbon dioxide (CO2);
    and a housing that houses the CO2 sensor therein,
    An opening configured to allow air to pass through from the outside is formed in the bottom surface of the housing,
    The CO2 sensor is
    a detection unit that detects CO2;
    a case that houses the detection unit;
    The opening includes two or more through holes formed adjacent to each other in a first direction,
    The case is formed with an intake hole for taking in surrounding air,
    In the sensor device, when the housing is viewed in plan from the bottom surface, at least a portion of the opening overlaps with a region in the case where the intake hole is formed.
  2. 　前記ＣＯ２センサは、前記吸気孔が前記ハウジングの前記底面に面するように配置されている、請求項１に記載のセンサ装置。 The sensor device according to claim 1, wherein the CO2 sensor is arranged such that the intake hole faces the bottom surface of the housing.
  3. 　前記ハウジングは、前記底面に対向する上面を有しており、
    　前記ＣＯ２センサは、前記ハウジングの内部において、前記上面よりも前記底面に近い位置に配置されている、請求項１または２に記載のセンサ装置。     The housing has an upper surface opposite to the bottom surface,
    The sensor device according to claim 1 or 2, wherein the CO2 sensor is located inside the housing at a position closer to the bottom surface than the top surface.
  4. 　前記ハウジングの内部の前記上面と前記ＣＯ２センサとの間において、前記ＣＯ２センサの前記上面側を覆うように配置された遮蔽部をさらに備える、請求項３に記載のセンサ装置。 The sensor device according to claim 3, further comprising a shielding portion disposed between the upper surface inside the housing and the CO2 sensor so as to cover the upper surface side of the CO2 sensor.
  5. 　前記遮蔽部は、前記ＣＯ２センサの側面側にも延在している、請求項４に記載のセンサ装置。 The sensor device according to claim 4, wherein the shielding portion also extends to a side surface of the CO2 sensor.
  6. 　前記遮蔽部は、導電性の材料で形成されている、請求項４または５に記載のセンサ装置。 The sensor device according to claim 4 or 5, wherein the shielding part is made of a conductive material.
  7. 　前記遮蔽部は、金属製である、請求項６に記載のセンサ装置。 The sensor device according to claim 6, wherein the shielding part is made of metal.
  8. 　前記ＣＯ２センサを前記ハウジングの内部に固定するための支持部をさらに備え、
    　前記ＣＯ２センサは、前記支持部によって、前記ハウジングの内側のすべての面から所定以上離隔した位置に配置される、請求項１～７のいずれか１項に記載のセンサ装置。     Further comprising a support part for fixing the CO2 sensor inside the housing,
    The sensor device according to any one of claims 1 to 7, wherein the CO2 sensor is arranged at a position separated from all inner surfaces of the housing by a predetermined distance or more by the support portion.
  9. 　前記ハウジングの内部に配置され、前記ＣＯ２センサの検出信号を外部機器に無線で送信するための通信装置をさらに備える、請求項１～８のいずれか１項に記載のセンサ装置。 The sensor device according to any one of claims 1 to 8, further comprising a communication device disposed inside the housing for wirelessly transmitting a detection signal of the CO2 sensor to an external device.
  10. 　前記ハウジングの内部に配置され、外部から電源ケーブルによって供給された交流電力を受けて前記通信装置に駆動電力を供給するための電源装置をさらに備え、
    　前記電源ケーブルは、前記底面において、前記開口部に対して前記第１方向に隣接して形成された配線孔を通って前記ハウジング内に進入している、請求項９に記載のセンサ装置。     further comprising a power supply device disposed inside the housing for receiving AC power supplied from the outside via a power cable and supplying driving power to the communication device;
    The sensor device according to claim 9, wherein the power cable enters into the housing through a wiring hole formed in the bottom surface adjacent to the opening in the first direction.
  11. 　前記ハウジングの内部に配置され、前記通信装置に駆動電力を供給するためのバッテリをさらに備える、請求項９に記載のセンサ装置。 The sensor device according to claim 9, further comprising a battery disposed inside the housing for supplying driving power to the communication device.
  12. 　前記ハウジングの前記底面のみに前記開口部が形成されている、請求項１～１１のいずれか１項に記載のセンサ装置。 The sensor device according to any one of claims 1 to 11, wherein the opening is formed only on the bottom surface of the housing.
  13. 　前記開口部を覆うように配置されたメッシュをさらに備える、請求項１～１２のいずれか１項に記載のセンサ装置。 The sensor device according to any one of claims 1 to 12, further comprising a mesh arranged to cover the opening.
  14. 　前記メッシュに振動を与えるように構成された振動装置をさらに備える、請求項１３に記載のセンサ装置。 The sensor device according to claim 13, further comprising a vibration device configured to apply vibration to the mesh.
PCT/JP2023/019274 2022-06-09 2023-05-24 Sensor device WO2023238665A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004144511A (en) * 2002-10-22 2004-05-20 Zexel Valeo Climate Control Corp Gas sensor
JP2012215403A (en) * 2011-03-31 2012-11-08 Panasonic Corp Sensor device
JP2014209378A (en) * 2014-07-04 2014-11-06 ホーチキ株式会社 Sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004144511A (en) * 2002-10-22 2004-05-20 Zexel Valeo Climate Control Corp Gas sensor
JP2012215403A (en) * 2011-03-31 2012-11-08 Panasonic Corp Sensor device
JP2014209378A (en) * 2014-07-04 2014-11-06 ホーチキ株式会社 Sensor

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