JP2007178214A - Air pressure detection system - Google Patents

Air pressure detection system Download PDF

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JP2007178214A
JP2007178214A JP2005375662A JP2005375662A JP2007178214A JP 2007178214 A JP2007178214 A JP 2007178214A JP 2005375662 A JP2005375662 A JP 2005375662A JP 2005375662 A JP2005375662 A JP 2005375662A JP 2007178214 A JP2007178214 A JP 2007178214A
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air pressure
pressure sensor
detection system
casing
pressure detection
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JP4882369B2 (en
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Masato Kaneko
理人 金子
Tadashi Wakabayashi
若林　　正
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an air pressure detection system for easily obtaining air pressure of a detecting object body and excelling in durability with an air pressure sensor prevented from breaking down. <P>SOLUTION: A flexible film part 6a is provided in a casing 6 of a sealed structure with the air pressure sensor 1 placed therewithin. The casing 6 is fixed inside a base part 10 of a flexible float body 9. A receiver 8 receives a detection signal transmitted by a reception part 5 of the pressure sensor 1. Air pressure within the float body 9 is displayed on a display part 8a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、空気圧検知システムに関し、さらに詳しくは、検知対象体の空気圧を確実かつ容易に把握でき、空気圧センサの故障を防止して耐久性に優れた空気圧検知システムに関するものである。  The present invention relates to an air pressure detection system, and more particularly, to an air pressure detection system that can reliably and easily grasp the air pressure of a detection target body and that prevents a failure of the air pressure sensor and has excellent durability.

空気式防舷材や可撓性ブイ等の外殻をゴム等の弾性材で形成した可撓性浮体は、内部に空気を密封して衝撃緩和や浮力等の所定性能を得るようにしている。そのため、可撓性浮体を正常に機能させるには、空気の充填状態を把握しておくことが好ましい。   A flexible floating body in which an outer shell such as a pneumatic fender or a flexible buoy is formed of an elastic material such as rubber seals air inside to obtain predetermined performance such as impact relaxation and buoyancy. . Therefore, in order for the flexible floating body to function properly, it is preferable to grasp the air filling state.

しかしながら、圧力計で可撓性浮体の空気圧を直接測定して空気の充填状態を確認するには、多大な作業工数が必要となり、近づくことが困難な設置場所や使用環境下にある使用中の可撓性浮体は、測定をすることができないという問題があった。   However, in order to directly check the air pressure of the flexible floating body with a pressure gauge and check the air filling state, it requires a lot of work man-hours, and it is difficult to get close to The flexible floating body has a problem that measurement cannot be performed.

近年、直接空気圧を測定することなく、空気圧センサの検知信号を無線を介して受信して空気圧を把握するようにした方法が種々提案されている（例えば、特許文献１、２参照）。これらの空気圧センサの外殻容器には、圧力を検知するために測定対象の気体を内部に導入する連通穴が設けられている。   In recent years, various methods have been proposed in which a pneumatic sensor is received by wirelessly receiving a detection signal from a pneumatic sensor without directly measuring the pneumatic pressure (see, for example, Patent Documents 1 and 2). The outer shell container of these air pressure sensors is provided with a communication hole for introducing a gas to be measured into the inside in order to detect pressure.

この連通穴から水分が浸入すれば、空気圧センサの内部にあるダイヤフラムや電子回路等の内部部品が損傷等して、故障により空気圧の検知が不可能になるので、海等の常に水分がある環境におかれる可撓性浮体等の検知対象体には使用しにくいという問題があった。また、浮力を調整するために、内部に気体とともに水等を密封するようにしている可撓性浮体には、使用することができなかった。
特開２００１−１７４３５７号公報 特開２００４−３１７１９８号公報 If moisture enters through this communication hole, internal components such as the diaphragm and electronic circuit inside the air pressure sensor will be damaged, and air pressure cannot be detected due to failure. There is a problem that it is difficult to use for a detection object such as a flexible floating body. Moreover, in order to adjust a buoyancy, it could not be used for the flexible floating body which sealed water etc. with gas inside.
JP 2001-174357 A JP 2004-317198 A

本発明の目的は、検知対象体に取り付けた空気圧センサと、受信機と交信するようにした空気圧検知システムにおいて、検知対象体の空気圧を確実かつ容易に把握でき、空気圧センサの故障を防止可能にした耐久性に優れた空気圧検知システムを提供することにある。   An object of the present invention is to enable an air pressure sensor attached to a detection object and an air pressure detection system configured to communicate with a receiver to reliably and easily grasp the air pressure of the detection object, and to prevent failure of the air pressure sensor. It is to provide an air pressure detection system with excellent durability.

上記目的を達成するため本発明の空気圧検知システムは、壁面の一部を可撓性膜部で構成した密閉構造のケーシング内に設置した空気圧センサと、該空気圧センサの検知信号を受信する受信機とを備えたことを特徴とするものである。   In order to achieve the above object, an air pressure detection system according to the present invention includes an air pressure sensor installed in a casing having a sealed structure in which a part of a wall is formed of a flexible film portion, and a receiver for receiving a detection signal of the air pressure sensor. It is characterized by comprising.

本発明の空気圧検知システムによれば、空気圧センサが、密閉構造のケーシングによって密閉状態におかれているので、検知対象体が海等で使用されるものであっても、空気圧センサの内部に海水等の水分が入り込むことがない。また、空気圧センサが、検知対象体内部の気体や液体に直接曝されることなく保護されるので、空気圧センサのダイヤフラムや電子回路等の内部部品の故障を防ぐことができ、長期使用を可能にして優れた耐久性を有する。   According to the air pressure detection system of the present invention, since the air pressure sensor is hermetically sealed by the casing having the hermetic structure, even if the object to be detected is used in the sea or the like, Such as moisture does not enter. In addition, since the air pressure sensor is protected without being directly exposed to the gas or liquid inside the object to be detected, internal components such as the air pressure sensor diaphragm and electronic circuit can be prevented from being damaged, enabling long-term use. And has excellent durability.

また、ケーシングの壁面の一部を可撓性膜部で構成しているので、ケーシング内部の空気圧が、検知対象体内部の空気圧の大きさに連動して相応に変動するので、空気圧センサによって検知対象体内部の空気圧の検知を確実に行なうことができる。検知した空気圧は、受信機により容易に把握することができる。   In addition, since a part of the wall surface of the casing is composed of a flexible membrane part, the air pressure inside the casing fluctuates correspondingly with the magnitude of the air pressure inside the object to be detected. It is possible to reliably detect the air pressure inside the object. The detected air pressure can be easily grasped by the receiver.

以下、本発明の空気圧検知システムを図に示した実施形態に基づいて説明する。図１に示すように、空気圧センサ１は密閉構造のケーシング６の内部に固定されている。この空気圧センサ１は、いわゆる一般的なダイヤフラム型圧力センサであり、樹脂製の外殻容器２の上面に気体導入用の連通穴２ａを有し、連通穴２ａの下方にはダイヤフラム３、電子回路等で構成される圧力検知部４および送信部５が備わっている。   Hereinafter, an air pressure detection system of the present invention will be described based on an embodiment shown in the drawings. As shown in FIG. 1, the air pressure sensor 1 is fixed inside a sealed casing 6. This air pressure sensor 1 is a so-called general diaphragm type pressure sensor, and has a communication hole 2a for introducing gas on the upper surface of a resin outer shell container 2, and a diaphragm 3 and an electronic circuit below the communication hole 2a. A pressure detection unit 4 and a transmission unit 5 are provided.

ケーシング６は、金属製のベース部６ｂの上に形成された側壁面および上壁面とにより密閉空間を形成している。上壁面は、シリコーンゴム、アクリロニトリルブタジエンゴム、ポリエチレン等からなる可撓性膜部６ａになっていて、側壁面には圧力調整弁７を備えている。   The casing 6 forms a sealed space with a side wall surface and an upper wall surface formed on the metal base portion 6b. The upper wall surface is a flexible film portion 6a made of silicone rubber, acrylonitrile butadiene rubber, polyethylene or the like, and a pressure regulating valve 7 is provided on the side wall surface.

ケーシング６は、送信部５が送信する検知信号の電波Ｗをシールドしないように構成し、側壁面には、例えば、ＡＢＳ樹脂、ＰＶＣ樹脂、ＰＰ樹脂等の樹脂を用いる。ベース部６ｂも金属に換えて、これらの樹脂で形成してもよい。また、上壁面の一部、例えば、中央部を可撓性膜部とし、上壁面の他の部分を上記側壁面と同様の樹脂で形成してもよい。   The casing 6 is configured so as not to shield the radio wave W of the detection signal transmitted by the transmission unit 5, and a resin such as ABS resin, PVC resin, PP resin, or the like is used for the side wall surface. The base portion 6b may be formed of these resins instead of metal. Further, a part of the upper wall surface, for example, the central part may be a flexible film part, and the other part of the upper wall surface may be formed of the same resin as the side wall surface.

空気圧センサ１は、ベース部６ｂに固定され、そのベース部６ｂに送信部５が導電性の接続部５ａを介して接続されている。送信部５が接続部５ａとベース部６ｂを介して発信した空気圧センサ１の検知信号を受信する受信機８には、空気圧を表示する表示部８ａが設けられている。   The air pressure sensor 1 is fixed to the base portion 6b, and the transmitting portion 5 is connected to the base portion 6b via a conductive connecting portion 5a. The receiver 8 that receives the detection signal of the air pressure sensor 1 transmitted from the transmission unit 5 via the connection unit 5a and the base unit 6b is provided with a display unit 8a that displays the air pressure.

図２に例示するように、ケーシング６は、ベース部６ｂを検知対象体となる可撓性浮体（袋体）９の口金部１０の内側に当接するように固定されている。可等性浮体９としては、空気式防舷材や可撓性ブイ等を例示できる。   As illustrated in FIG. 2, the casing 6 is fixed so that the base portion 6 b comes into contact with the inner side of the base portion 10 of the flexible floating body (bag body) 9 serving as a detection target body. Examples of the equitable float 9 include a pneumatic fender and a flexible buoy.

口金部１０の内側は変動がなく、ケーシング６を安定して固定できる。流体注入口１１から空気が注入され、可撓性浮体９が密封されると、その空気圧の大きさに応じてケーシング６の可撓性膜部６ａが変動する。   The inside of the base part 10 is not changed, and the casing 6 can be fixed stably. When air is injected from the fluid inlet 11 and the flexible floating body 9 is sealed, the flexible film portion 6a of the casing 6 varies according to the magnitude of the air pressure.

可撓性浮体９の内部の空気圧が大きくなると、可撓性膜部６ａが内側に窪み、ケーシング６の内部の空気圧が大きくなり、これに伴い空気圧センサ１には、連通穴２ａを通じてケーシング６の内部の気体が入り込み、ダイヤフラム３が押し下げられて、図示しない電極間の静電容量が変化して、これを圧力検知部４が検知する。   When the air pressure inside the flexible floating body 9 is increased, the flexible membrane portion 6a is recessed inward, and the air pressure inside the casing 6 is increased. Accordingly, the air pressure sensor 1 is connected to the air pressure sensor 1 through the communication hole 2a. The internal gas enters, the diaphragm 3 is pushed down, the capacitance between the electrodes (not shown) changes, and this is detected by the pressure detector 4.

このように、ケーシング６の可撓性膜部６ａがダイヤフラムとして機能して、可撓性浮体９の空気圧の大きさに連動してケーシング６の内部の空気圧が相応に変動し、空気圧センサ１により可撓性浮体９の空気圧を検知することができる。   Thus, the flexible membrane portion 6 a of the casing 6 functions as a diaphragm, and the air pressure inside the casing 6 fluctuates correspondingly with the air pressure of the flexible floating body 9. The air pressure of the flexible floating body 9 can be detected.

精度よく可撓性浮体９の空気圧を検知するには、ケーシング６の可撓性膜部６ａと空気圧センサ１の連通穴２ａを対向するように配置することが好ましい。   In order to detect the air pressure of the flexible floating body 9 with high accuracy, it is preferable to arrange the flexible film portion 6a of the casing 6 and the communication hole 2a of the air pressure sensor 1 so as to face each other.

空気圧センサ１は、密閉構造のケーシング６で覆われているので、海水等に浸ることはなく、直接、可撓性浮体９の内部の気体や液体に曝されることもない。したがって、ダイヤフラム３、電子回路等からなる圧力検知部４や送信部５の内部部品が、これら海水等により、損傷等を受けることがなく、故障を防止して長期にわたり耐久性よく使用できる。   Since the air pressure sensor 1 is covered with the sealed casing 6, the air pressure sensor 1 is not immersed in seawater or the like, and is not directly exposed to the gas or liquid inside the flexible floating body 9. Therefore, the internal parts of the pressure detection unit 4 and the transmission unit 5 including the diaphragm 3 and the electronic circuit are not damaged by the seawater and the like, and can be used with good durability over a long period of time without failure.

可撓性浮体９に気体とともに流体を密封する場合、硫化水素等の腐食性ガス類を密封する場合においても、空気圧センサ１がこれらの影響を受けることがない。   When the fluid is sealed together with the gas in the flexible floating body 9, the air pressure sensor 1 is not affected even when a corrosive gas such as hydrogen sulfide is sealed.

このような構成であれば、空気圧センサ１を防水構造等の特別な仕様にする必要はなく、汎用の空気圧センサ１を用いることができる。   With such a configuration, the air pressure sensor 1 does not need to have a special specification such as a waterproof structure, and the general-purpose air pressure sensor 1 can be used.

また、ケーシング６に設けられた圧力調整弁７により、ケーシング６内部の空気圧が調整可能となっている。これにより、空気圧センサ１を実装する可撓性浮体９の空気圧に応じて、ケーシング６の内部を適切な空気圧に設定でき、空気圧を測定する際のゼロ点調整も容易になる。   Moreover, the air pressure inside the casing 6 can be adjusted by a pressure adjusting valve 7 provided in the casing 6. Thereby, the inside of the casing 6 can be set to an appropriate air pressure according to the air pressure of the flexible floating body 9 on which the air pressure sensor 1 is mounted, and the zero point adjustment when measuring the air pressure is facilitated.

圧力検知部４の検知信号は、送信部５から発信される電波Ｗで受信機８に送信され、この検知信号に基づいて受信機８の表示部８ａに可撓性浮体９の内部の空気圧が表示される。したがって、近づくことが困難な狭い場所や危険な場所、環境で使用されている可撓性浮体９であっても、離れた場所から容易に空気圧を検知でき、気体の充填状態を把握することができる。   The detection signal of the pressure detection unit 4 is transmitted to the receiver 8 by the radio wave W transmitted from the transmission unit 5, and the air pressure inside the flexible floating body 9 is applied to the display unit 8 a of the receiver 8 based on this detection signal. Is displayed. Accordingly, even in the case of a flexible floating body 9 that is used in a narrow place, a dangerous place, or an environment that is difficult to approach, it is possible to easily detect the air pressure from a remote place and grasp the gas filling state. it can.

この実施形態では、送信部５と接続しているベース部６ｂをアンテナとして機能させることができるので、ベース部６ｂの形状等を調整することにより、良好な送信を行うことが可能になる。また、ベース部６ｂを口金部１０と導通させることにより、口金部１０をアンテナとして機能させることも可能となる。   In this embodiment, since the base unit 6b connected to the transmission unit 5 can function as an antenna, it is possible to perform good transmission by adjusting the shape of the base unit 6b. Further, by connecting the base portion 6b to the base portion 10, the base portion 10 can also function as an antenna.

空気圧センサ１としては、例示したダイヤフラム型圧力センサのほか、ベローズ型圧力センサ等の一般的なものを使用することができる。   As the air pressure sensor 1, in addition to the illustrated diaphragm type pressure sensor, a general one such as a bellows type pressure sensor can be used.

本発明の空気圧検知システムの検知対象体としては、実施形態で示した他に、ガスホルダー、各種ホース等を例示することができる。   As a detection target body of the air pressure detection system of the present invention, a gas holder, various hoses and the like can be exemplified in addition to those shown in the embodiment.

本発明の空気圧検知システムの全体構成を例示する説明図である。It is explanatory drawing which illustrates the whole structure of the air pressure detection system of this invention. 図１の空気圧検知システムを実装した可撓性浮体を例示する一部省略断面図である。FIG. 2 is a partially omitted cross-sectional view illustrating a flexible floating body on which the air pressure detection system of FIG. 1 is mounted.

符号の説明Explanation of symbols

１ 空気圧センサ
２ 外殻容器 ２ａ 連通穴
３ ダイヤフラム
４ 圧力検知部
５ 送信部 ５ａ 接続部
６ ケーシング ６ａ 可撓性膜部 ６ｂ ベース部
７ 圧力調整弁
８ 受信機 ８ａ 表示部
９ 可撓性浮体
１０ 口金部
１１ 流体注入口 DESCRIPTION OF SYMBOLS 1 Air pressure sensor 2 Outer shell container 2a Communication hole 3 Diaphragm 4 Pressure detection part 5 Transmission part 5a Connection part 6 Casing 6a Flexible film part 6b Base part 7 Pressure adjustment valve 8 Receiver 8a Display part 9 Flexible floating body 10 Base Part 11 Fluid inlet

Claims (7)

壁面の一部を可撓性膜部で構成した密閉構造のケーシング内に設置した空気圧センサと、該空気圧センサの検知信号を受信する受信機とを備えた空気圧検知システム。   An air pressure detection system comprising an air pressure sensor installed in a sealed casing having a part of a wall surface made of a flexible membrane portion, and a receiver for receiving a detection signal of the air pressure sensor. 前記ケーシングに圧力調整弁を設けた請求項１に記載の空気圧検知システム。   The air pressure detection system according to claim 1, wherein a pressure adjusting valve is provided in the casing. 前記ケーシングのベース部を金属で形成し、該ベース部と前記空気圧センサの送信部とを接続した請求項１または２に記載の空気圧検知システム。   The air pressure detection system according to claim 1 or 2, wherein a base portion of the casing is made of metal, and the base portion and a transmission portion of the air pressure sensor are connected. 前記空気圧センサの気体導入用の連通穴と前記可撓性膜部とを対向する位置に配置した請求項１〜３のいずれかに記載の空気圧検知システム。   The air pressure detection system according to any one of claims 1 to 3, wherein a communication hole for introducing a gas of the air pressure sensor and the flexible film portion are disposed at opposing positions. 前記空気圧センサが可撓性膜体からなる密閉された袋体の内部に設置されている請求項１〜４のいずれかに記載の空気圧検知システム。   The air pressure detection system according to claim 1, wherein the air pressure sensor is installed inside a sealed bag body made of a flexible film body. 前記袋体が空気式防舷材である請求項５に記載の空気圧検知システム。   The air pressure detection system according to claim 5, wherein the bag body is a pneumatic fender. 前記袋体がブイである請求項５に記載の空気圧検知システム。   The air pressure detection system according to claim 5, wherein the bag is a buoy.
JP2005375662A 2005-12-27 2005-12-27 Air pressure detection system Expired - Fee Related JP4882369B2 (en)

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WO2010067580A1 (en) * 2008-12-09 2010-06-17 株式会社ブリヂストン Device for acquiring information regarding the inside of a tire
WO2013046832A1 (en) 2011-09-30 2013-04-04 横浜ゴム株式会社 Sensor housing container for pneumatic fender, and pneumatic fender
CN112649189A (en) * 2020-12-28 2021-04-13 西安精密机械研究所 Capsule pressure detection device and detection method under full thunder state
CN113167674A (en) * 2018-08-31 2021-07-23 赛峰电子与防务公司 Closed pressure sensor

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WO2010067580A1 (en) * 2008-12-09 2010-06-17 株式会社ブリヂストン Device for acquiring information regarding the inside of a tire
JP5513408B2 (en) * 2008-12-09 2014-06-04 株式会社ブリヂストン In-tire information acquisition device
US8797762B2 (en) 2008-12-09 2014-08-05 Bridgestone Corporation Device for acquiring information regarding the inside of a tire
WO2013046832A1 (en) 2011-09-30 2013-04-04 横浜ゴム株式会社 Sensor housing container for pneumatic fender, and pneumatic fender
US9352811B2 (en) 2011-09-30 2016-05-31 The Yokohama Rubber Co., Ltd. Sensor accommodation container for a pneumatic fender and pneumatic fender
CN113167674A (en) * 2018-08-31 2021-07-23 赛峰电子与防务公司 Closed pressure sensor
CN112649189A (en) * 2020-12-28 2021-04-13 西安精密机械研究所 Capsule pressure detection device and detection method under full thunder state
CN112649189B (en) * 2020-12-28 2023-02-21 西安精密机械研究所 Capsule pressure detection device and detection method under full lightning state

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