JP4717992B2 - Water supply - Google Patents

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Publication number
JP4717992B2
JP4717992B2 JP2000282839A JP2000282839A JP4717992B2 JP 4717992 B2 JP4717992 B2 JP 4717992B2 JP 2000282839 A JP2000282839 A JP 2000282839A JP 2000282839 A JP2000282839 A JP 2000282839A JP 4717992 B2 JP4717992 B2 JP 4717992B2
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Japan
Prior art keywords
meter
water
water supply
meter box
water meter
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Expired - Fee Related
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JP2000282839A
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JP2002090203A (en
Inventor
勉 鈴木
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Aichi Tokei Denki Co Ltd
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Aichi Tokei Denki Co Ltd
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Priority to JP2000282839A priority Critical patent/JP4717992B2/en
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  • Arrangements For Transmission Of Measured Signals (AREA)

Description

【0001】
本発明は、水道メータと、この水道メータを設置するときに使うメータボックス含む水道設備に関する。
【0002】
【従来の技術】
本願出願人は、無線通信を用いて検針できる無線検針用水道メータを特願平5−151742号(特開平7−19927号)で提案した。この水道メータは、メータ計量部の上部に合成樹脂製のケースを備えて、該ケースに電源用電池、計測値を積算するメータ電子ユニット、積算データを電波形態の無線信号で送信する無線ユニットを内蔵し、かつ無線ユニットに接続したアンテナを上記ケース或いは該ケースに備えた合成樹脂製の開閉蓋に埋設している。一般に水道メータは設置するときに、メータボックス内に配設される。そしてメータボックスは金属製が多い。
【0003】
【発明が解決しようとする課題】
メータボックスの蓋が金属製の場合、電波が通過しないため、無線検針のための送受信が困難であるという問題点があった。そこで本発明はかかる問題点を解消できるメータボックスを提供することを第1の目的とする。また、前記問題点を解消すると共に、検針時の電波の送受信が良好に行える水道設備を提供することを第2の目的とする。
【0004】
【課題を解決するための手段】
前記題を解決するために、請求項1の発明は、メータボックスと該メータボックス内に設置された無線検針用水道メータとを含む水道設備において、
前記メータボックス内に設置したアンテナの向きを水平面内で変更可能にするとともに、
メータボックスの蓋に、その表裏を貫通する複数の長穴を、その各長穴の内端が、水道メータの位置をほぼ中心とする円周上にほぼ位置するように、適宜間隔を有して周方向において配置するとともに、前記長穴の長手方向が、前記水道メータの位置をほぼ中心とする径方向に位置するように設けたことを特徴とする水道設備である。
【0005】
請求項2の発明は、請求項1の水道設備において、前記長穴の内周面を、メータボックス内から外部に向うほど前記長穴が拡径するテーパ状に形成し、前記長穴を樹脂製の栓で埋めたことを特徴とするものである。
【0006】
請求項3の発明は、請求項1又は2の水道設備において、水道メータの流量積算値を表示する液晶表示部に、電波の受信強度を複数段階で表示するシンボルマークを配設したことを特徴とするものである。
【0007】
【発明の実施の形態】
次に本発明の好ましい実施の形態を図面の実施例に従って説明する。
【0008】
図1と図2において、30は水道管21に接続した無線検針用電子式水道メータ、22は水道メータ30と直列に連結された止水栓である。23はメータボックスで、4面の側壁からなる側壁部24と、底部と側壁部24に蝶番で開閉可能に取り付けられた蓋26とからなる。24aは水道管21を通すために側壁部24に形成した切欠きである。蓋26には、水道メータの中心Y−Yの周りに円周を16等分して16個のスリット状の穴27が明けてある。この穴27は、特に図2に示すように、水道メータの中心Yに対して放射状、即ち半径方向にスリットの長手方向が向くように形成されている。この穴27は雨やほこりの侵入を防ぐために樹脂製の栓40で埋めてある。穴27の上面テーパは栓の落下を防ぐ。
【0009】
図2で、蓋26の図示下方に明けられた穴28は電波の通るための穴ではなく、蓋26を開くための指掛け用の周知の穴(厳密には切欠き)である。
【0010】
水道メータ30は図3に示すように、アンテナ14の向きが水平面内で変更可能で、かつ流量積算値を表示する液晶表示部12に電波の受信強度を複数段階で表示するシンボルマーク12a〜12eを備えている。
【0011】
図3(a)(b)の水道メータ30で、下ケース1の流入口1Aから流入する水は、ストレーナ2、インナーケース3のノズルを通って噴流となって羽根車4を回転させる。羽根車4はインナーケース3の底部中心に垂直に立てられたピポット5に回転可能に支承されている。羽根車4の軸の上端に設けた永久磁石4Aは羽根車4と共に回動し、回転磁界を生じる。受圧板6はOリング7を介して下ケース1の上部開口部に載置され、下ケース1の上部の雌ねじに押えねじ8を螺着することで、下ケース1に水密的に装着されている。
【0012】
電子回路部9の電子回路基板10には、永久磁石4Aの回転磁界を検出して電気信号に変換する磁気センサ11と、該磁気センサ11の電気信号から流量積算値を演算する電子回路と流量積算値を表示する液晶表示部12と電源用電池13と流量積算値を電波で送信するアンテナ14とが搭載され、非磁性材からなる下板15と該下板15にパッキン16を介して水密的に取り付けられた透明なカバー17とで構成された指示部ケース18に電子回路部9が水密的に内蔵され、かつ下板15に固着されている。こうして、指示部ケース18と、該ケース18に内蔵された電子回路基板10〜アンテナ14とからなる電子回路部9とでメータ指示部19が構成されている。
【0013】
液晶表示部12には、流量積算値を表示する数字の他に、5つの四角形のシンボルマーク12a〜12eが並設され、受信電波の強度に応じてこれらのシンボルマークが点灯する。この場合、受信強度を5段階表示で表示する。即ち、最も弱い電波ではシンボルマーク12aだけが点灯し、次に強い電波では12aと12bが点灯する。このように受信強度が強くなる程、更に12c,12d,12eと点灯するシンボルマークが増加し、最強のときは図示のように12a〜12eの5個のシンボルマークが点灯する。こうして、シンボルマーク12a〜12eはいわゆるバーグラフを構成している。
【0014】
ところで、メータ指示部19は指示部ケース18の下板15を押えねじ8の上部に当接して部材20をカーリングすることで押えねじ8の上部に摺動可能かつ回動可能に装着される。こうして、メータ指示部19は計量部21を構成する下ケース1に対して相対的に回動可能であり、下ケース1に対して相対的に任意の角度Aでその角度位置を保持(固定)可能である。メータ指示部19は、羽根車4の軸線Y−Yを中心として回動するように配設され、磁気センサ11は羽根車4の軸線Y−Y上に配設されている。この軸線Y−Yは前記水道メータの中心Y−Yに相当する。
【0015】
図2に示すように水道管21に下ケース1の流入口と流出口を連結して配設された水道メータ30は、下ケース1の流入口と流出口を結ぶ前記軸線X−Xが水道管21により決まる方向を向く。この設置環境で、アンテナ14の指向性とアンテナ14の向きによっては、最良の送受信状態を得難い場合もある。そのときは、カバー17を手で操作してメータ指示部19を回動させ、最良の受信状態が得られるよう図3の角度Aまでメータ指示部19の向きを変える。こうすることでアンテナ14の向きを変え、良好な送・受信状態が得られる。
【0016】
このようにして、メータ指示部19の向きを変えて、最良の受信状態を探すときに、受信状態のモニターできる表示機能としての複数段階で表示する前記シンボルマークが目安として役立つ。また、スリット状の穴27が電波を効果的に通過させる。
【0017】
【発明の効果】
本発明のメータボックスは上述のように構成されているので、蓋が金属製の場合でも、電波が穴を通って伝わり、無線検針時の通信を阻害する虞れがない。また設置環境に応じてアンテナの向きを変えて、最も送受信が良好な状態を得ることができる。そして請求項3の発明では、受信強度と、受信状態の余裕をシンボルマークで確認してアンテナの最適方向を決めることができ、通信の信頼度が向上する。
【図面の簡単な説明】
【図1】本発明の水道設備の実施例の縦断面図。
【図2】図1の実施例の上面図。
【図3】図1の実施例に用いる水道メータで、(a)は縦断面図、(b)は平面図。
【符号の説明】
12 液晶表示部
12a,12b,12c,12d,12e シンボルマーク
14 アンテナ
21 水道管
23 メータボックス
26 蓋
27 穴
30 水道メータ
Y−Y メータの中心
[0001]
The present invention, a water meter, about the water supply equipment, including the meter box to use when installing the water meter.
[0002]
[Prior art]
The applicant of the present application has proposed a water meter for wireless meter reading that can be measured using wireless communication in Japanese Patent Application No. 5-151742 (Japanese Patent Laid-Open No. 7-19927). This water meter has a case made of synthetic resin at the upper part of the meter measuring unit, and includes a battery for power supply, a meter electronic unit for integrating the measurement values, and a wireless unit for transmitting the integration data as radio signals in the form of radio waves. A built-in antenna connected to the wireless unit is embedded in the case or a synthetic resin opening / closing lid provided in the case. In general, when a water meter is installed, it is disposed in a meter box. And most meter boxes are made of metal.
[0003]
[Problems to be solved by the invention]
When the lid of the meter box is made of metal, there is a problem in that transmission / reception for wireless meter reading is difficult because radio waves do not pass. Accordingly, a first object of the present invention is to provide a meter box that can eliminate such problems. It is a second object of the present invention to provide a water supply facility that can solve the above-mentioned problems and can satisfactorily transmit and receive radio waves during meter reading.
[0004]
[Means for Solving the Problems]
In order to solve the above challenges, the invention of claim 1, in water systems comprising a radio meter reading water meter installed in the meter box and the meter box,
While making it possible to change the orientation of the antenna installed in the meter box in a horizontal plane,
A plurality of elongated holes penetrating the front and back of the meter box lid are provided with appropriate intervals so that the inner ends of the elongated holes are located substantially on the circumference centered at the position of the water meter. The water supply facility is provided in such a manner that the longitudinal direction of the elongated hole is positioned in a radial direction substantially centered on the position of the water meter .
[0005]
According to a second aspect of the present invention, in the water supply facility according to the first aspect, the inner peripheral surface of the elongated hole is formed in a tapered shape in which the diameter of the elongated hole increases toward the outside from the inside of the meter box, and the elongated hole is formed of a resin. It is characterized by being filled with a metal stopper.
[0006]
The invention of claim 3 is characterized in that, in the water supply facility of claim 1 or 2, a symbol mark for displaying the radio wave reception intensity in a plurality of stages is arranged on the liquid crystal display unit for displaying the integrated flow rate value of the water meter. It is what.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, preferred embodiments of the present invention will be described with reference to examples of the drawings.
[0008]
In FIGS. 1 and 2, 30 is an electronic water meter for wireless meter reading connected to a water pipe 21, and 22 is a water stop cock connected in series with the water meter 30. Reference numeral 23 denotes a meter box, which includes a side wall portion 24 having four side walls, and a bottom portion and a lid 26 attached to the side wall portion 24 by a hinge so as to be opened and closed. Reference numeral 24 a denotes a notch formed in the side wall portion 24 for passing the water pipe 21. The lid 26 is provided with 16 slit-like holes 27 by dividing the circumference into 16 equal parts around the center Y-Y of the water meter. As shown particularly in FIG. 2, the holes 27 are formed radially with respect to the center Y of the water meter, that is, so that the longitudinal direction of the slit faces in the radial direction. The hole 27 is filled with a resin plug 40 to prevent rain and dust from entering. The top taper of the hole 27 prevents the stopper from falling.
[0009]
In FIG. 2, a hole 28 opened below the lid 26 is not a hole through which radio waves pass, but is a well-known hole (strictly a notch) for finger placement for opening the lid 26.
[0010]
As shown in FIG. 3, the water meter 30 can change the direction of the antenna 14 in a horizontal plane, and the symbol marks 12 a to 12 e that display the reception intensity of radio waves in a plurality of stages on the liquid crystal display unit 12 that displays the flow rate integrated value. It has.
[0011]
In the water meter 30 shown in FIGS. 3A and 3B, the water flowing from the inlet 1 </ b> A of the lower case 1 becomes a jet flow through the nozzles of the strainer 2 and the inner case 3 to rotate the impeller 4. The impeller 4 is rotatably supported by a pivot 5 standing vertically at the bottom center of the inner case 3. The permanent magnet 4A provided at the upper end of the shaft of the impeller 4 rotates together with the impeller 4 to generate a rotating magnetic field. The pressure receiving plate 6 is placed in the upper opening of the lower case 1 via the O-ring 7 and is attached to the lower case 1 in a watertight manner by screwing the presser screw 8 onto the female screw on the upper portion of the lower case 1. Yes.
[0012]
The electronic circuit board 10 of the electronic circuit unit 9 includes a magnetic sensor 11 that detects a rotating magnetic field of the permanent magnet 4A and converts it into an electric signal, an electronic circuit that calculates an integrated flow rate from the electric signal of the magnetic sensor 11, and a flow rate. A liquid crystal display unit 12 for displaying the integrated value, a power source battery 13, and an antenna 14 for transmitting the integrated flow rate value by radio waves are mounted. The lower plate 15 made of a non-magnetic material and the lower plate 15 through a packing 16 are watertight. The electronic circuit unit 9 is watertightly built in the pointing unit case 18 constituted by the transparent cover 17 attached thereto and is fixed to the lower plate 15. Thus, the meter indication unit 19 is configured by the indication unit case 18 and the electronic circuit unit 9 including the electronic circuit board 10 to the antenna 14 built in the case 18.
[0013]
On the liquid crystal display unit 12, in addition to the number indicating the flow rate integrated value, five square symbol marks 12a to 12e are arranged in parallel, and these symbol marks are lit according to the intensity of the received radio wave. In this case, the received intensity is displayed in a 5-level display. That is, only the symbol mark 12a is lit for the weakest radio wave, and 12a and 12b are lit for the next strongest radio wave. Thus, as the reception intensity increases, the number of symbol marks to be lit 12c, 12d, and 12e further increases, and at the strongest level, the five symbol marks 12a to 12e are lit as illustrated. Thus, the symbol marks 12a to 12e form a so-called bar graph.
[0014]
The meter indicator 19 is slidably and rotatably mounted on the upper part of the presser screw 8 by curling the member 20 by bringing the lower plate 15 of the indicator part case 18 into contact with the upper part of the presser screw 8. Thus, the meter indicating unit 19 can be rotated relative to the lower case 1 constituting the measuring unit 21, and the angular position is held (fixed) at an arbitrary angle A relative to the lower case 1. Is possible. The meter indicating unit 19 is disposed so as to rotate about the axis YY of the impeller 4, and the magnetic sensor 11 is disposed on the axis YY of the impeller 4. This axis YY corresponds to the center YY of the water meter.
[0015]
As shown in FIG. 2, the water meter 30 disposed by connecting the inlet and the outlet of the lower case 1 to the water pipe 21 has the axis XX connecting the inlet and the outlet of the lower case 1. The direction is determined by the tube 21. In this installation environment, it may be difficult to obtain the best transmission / reception state depending on the directivity of the antenna 14 and the orientation of the antenna 14. At that time, the cover 17 is operated by hand to rotate the meter indicating unit 19, and the direction of the meter indicating unit 19 is changed to the angle A in FIG. 3 so that the best reception state is obtained. By doing this, the direction of the antenna 14 is changed, and a good transmission / reception state is obtained.
[0016]
Thus, when the direction of the meter instruction unit 19 is changed to search for the best reception state, the symbol mark displayed in a plurality of stages as a display function capable of monitoring the reception state is useful as a guide. Moreover, the slit-shaped hole 27 allows radio waves to pass through effectively.
[0017]
【The invention's effect】
Since the meter box of the present invention is configured as described above, even when the lid is made of metal, radio waves are transmitted through the hole, and there is no possibility of hindering communication during wireless meter reading. In addition , by changing the direction of the antenna according to the installation environment, it is possible to obtain the best transmission / reception state. According to the third aspect of the present invention, the optimum antenna direction can be determined by confirming the reception strength and the margin of the reception state with the symbol mark, and the reliability of communication is improved.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an embodiment of a water supply system of the present invention.
FIG. 2 is a top view of the embodiment of FIG.
3 is a water meter used in the embodiment of FIG. 1, (a) is a longitudinal sectional view, and (b) is a plan view. FIG.
[Explanation of symbols]
12 Liquid crystal display part 12a, 12b, 12c, 12d, 12e Symbol mark 14 Antenna 21 Water pipe 23 Meter box 26 Cover 27 Hole 30 Water meter YY Center of meter

Claims (3)

メータボックスと該メータボックス内に設置された無線検針用水道メータとを含む水道設備において、
前記メータボックス内に設置したアンテナの向きを水平面内で変更可能にするとともに、
メータボックスの蓋に、その表裏を貫通する複数の長穴を、その各長穴の内端が、水道メータの位置をほぼ中心とする円周上にほぼ位置するように、適宜間隔を有して周方向において配置するとともに、前記長穴の長手方向が、前記水道メータの位置をほぼ中心とする径方向に位置するように設けたことを特徴とする水道設備。
In waterworks including a meter box and a water meter for wireless meter reading installed in the meter box,
While making it possible to change the orientation of the antenna installed in the meter box in a horizontal plane,
A plurality of elongated holes penetrating the front and back of the meter box lid are provided with an appropriate interval so that the inner end of each elongated hole is located substantially on the circumference centered at the position of the water meter. The water supply facility is provided in such a manner that the longitudinal direction of the elongated hole is positioned in a radial direction substantially centered on the position of the water meter .
前記長穴の内周面を、メータボックス内から外部に向うほど前記長穴が拡径するテーパ状に形成し、前記長穴を樹脂製の栓で埋めたことを特徴とする請求項1記載の水道設備。The inner peripheral surface of the long hole is formed in a tapered shape in which the diameter of the long hole increases toward the outside from the inside of the meter box, and the long hole is filled with a resin plug. Water supply equipment. 水道メータの流量積算値を表示する液晶表示部に、電波の受信強度を複数段階で表示するシンボルマークを配設したことを特徴とする請求項1又は2記載の水道設備。The water supply system according to claim 1 or 2, wherein a symbol mark for displaying the reception intensity of radio waves in a plurality of stages is arranged on a liquid crystal display unit for displaying an integrated flow rate value of the water meter.
JP2000282839A 2000-09-19 2000-09-19 Water supply Expired - Fee Related JP4717992B2 (en)

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JP6989739B2 (en) 2017-03-31 2022-01-12 横浜市 How to install a strainer for removing foreign substances in tap water and how to install water pipes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037831U (en) * 1983-08-24 1985-03-15 横須賀市 In-hole measurement device
JPH06282790A (en) * 1993-03-30 1994-10-07 Toshiba Corp Automatic meter reading radio device
JPH075023U (en) * 1993-06-21 1995-01-24 リコーエレメックス株式会社 Wireless meter reading device
JPH1161867A (en) * 1997-08-08 1999-03-05 Kubota Corp Manhole cover for radio communication
JP2000215377A (en) * 1999-01-26 2000-08-04 T & D:Kk Measuring instrument

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037831A (en) * 1983-08-10 1985-02-27 Hitachi Micro Comput Eng Ltd Digital-analog converting circuit and integration circuit using it

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037831U (en) * 1983-08-24 1985-03-15 横須賀市 In-hole measurement device
JPH06282790A (en) * 1993-03-30 1994-10-07 Toshiba Corp Automatic meter reading radio device
JPH075023U (en) * 1993-06-21 1995-01-24 リコーエレメックス株式会社 Wireless meter reading device
JPH1161867A (en) * 1997-08-08 1999-03-05 Kubota Corp Manhole cover for radio communication
JP2000215377A (en) * 1999-01-26 2000-08-04 T & D:Kk Measuring instrument

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