JP2007142932A - Dsl corresponding data transmitting apparatus - Google Patents

Dsl corresponding data transmitting apparatus Download PDF

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JP2007142932A
JP2007142932A JP2005335657A JP2005335657A JP2007142932A JP 2007142932 A JP2007142932 A JP 2007142932A JP 2005335657 A JP2005335657 A JP 2005335657A JP 2005335657 A JP2005335657 A JP 2005335657A JP 2007142932 A JP2007142932 A JP 2007142932A
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radio wave
telephone line
wave mixing
data transmission
telephone
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Shinji Naito
伸二 内藤
Takashi Iwasaki
多加志 岩崎
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Nakayo Telecommunications Inc
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Nakayo Telecommunications Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent a radio wave mix without adding a radio wave preventing filter attached outside in an apparatus to transmit a meter reading data of a gas meter and a water supply meter or the like and a data of a measuring apparatus and a sensor equipment. <P>SOLUTION: A data transmitting apparatus to send the data obtained from a meter reading apparatus 5 out to a telephone line to pass even a DSL signal inserts a radio wave mix preventing filter 41 to prevent the radio wave mix between a change-over portion 42 and a network control portion 43 and prevents the radio wave mix 104 from the telephone line 3 side and the radio wave mix 105 from a premises wiring 7 side at the same time. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ガスメータや水道メータ等の検針装置、及び測定器やセンサ機器等からのデータを電話回線経由でデータ収集センター等に送信するシステムにおいて、電波混入を防止する機能を有するデータ送信装置に関するものである。   The present invention relates to a data transmission device having a function of preventing radio wave mixing in a meter reading device such as a gas meter or a water meter, and a system for transmitting data from a measuring instrument or sensor device to a data collection center or the like via a telephone line. Is.

従来の検針データ送信装置等において、電話回線からの電波混入を防止するため、電話機用コードをコイル状に形成する工夫がなされている(例えば、特許文献1参照)。しかし、この方法では電話機用コードが特殊になること、及び電波混入の防止能力が低いことから、電波混入防止用フィルタを内蔵するのが通例である。
図3は従来の検針データ送信装置40によるシステム構成図であり、図4は従来の検針データ送信装置40のブロック構成図である。センター1と検針装置5とは電話回線3を介して接続される。この電話回線3は通常電話機8と接続されているが、検針データ送信時は切り替え部42により電話機8は電話回線3から切り離される。ここで、電話線3の近傍に強い電波を発する電波塔9が存在している場合、電波塔9からの電波が電話回線3に混入する(電波混入10)。この電波混入が検針データ送信装置40の中枢に到達すると、送信指示コマンド等のセンター1からの信号受信が不能になると共に、検針データ送信装置40自体が誤動作することもある。検針データ送信装置40内のフィルタ41はこの電波混入10を防止するためのものである。
In a conventional meter-reading data transmission device or the like, in order to prevent radio wave contamination from a telephone line, a device for forming a telephone cord in a coil shape has been devised (for example, see Patent Document 1). However, in this method, since the telephone cord is special and the ability to prevent radio wave mixing is low, it is common to incorporate a filter for preventing radio wave mixing.
FIG. 3 is a system configuration diagram of the conventional meter reading data transmission device 40, and FIG. 4 is a block configuration diagram of the conventional meter reading data transmission device 40. The center 1 and the meter reading device 5 are connected via a telephone line 3. The telephone line 3 is normally connected to the telephone 8, but the telephone 8 is disconnected from the telephone line 3 by the switching unit 42 when meter reading data is transmitted. Here, when there is a radio tower 9 that emits strong radio waves in the vicinity of the telephone line 3, radio waves from the radio tower 9 are mixed into the telephone line 3 (radio wave mixing 10). When this radio wave mixture reaches the center of the meter reading data transmitting device 40, it becomes impossible to receive signals from the center 1 such as a transmission instruction command, and the meter reading data transmitting device 40 itself may malfunction. The filter 41 in the meter-reading data transmission apparatus 40 is for preventing this radio wave mixing 10.

しかし、このような工夫があっても、この電話回線3がDSL等の高速データ通信兼用回線であった場合、図1に示すDSL信号を分離するアダプタ11を介して電話回線及び宅内配線が接続されているので、この分離するアダプタ11の内部から回り込む電波混入を防止することができなかった。すなわち、図2に示す電波混入10がアダプタ11のハイパスフィルタ111,ローパスフィルタ113を介して回り込み(電波混入102,電波混入103)、図4に示す検針データ送信装置4の網制御部43に到達する(電波混入105,電波混入106)。 However, even if such a device is used, when the telephone line 3 is a line for high-speed data communication such as DSL, the telephone line and the home wiring are connected via the adapter 11 for separating the DSL signal shown in FIG. Therefore, it was not possible to prevent the radio waves from entering from the inside of the adapter 11 to be separated. That is, the radio wave mixing 10 shown in FIG. 2 wraps around through the high-pass filter 111 and the low-pass filter 113 of the adapter 11 (radio wave mixing 102, radio wave mixing 103), and reaches the network control unit 43 of the meter-reading data transmission device 4 shown in FIG. (Radio wave mixing 105, radio wave mixing 106).

従って、電話回線3がDSL兼用回線であった場合は、内蔵のフィルタ41に加え、別の電波混入防止用フィルタ(図示せず)を信号分離アダプタ11のローパスフィルタ113と検針データ送信装置40の間に外付けで設置する必要があった。このため、設置工事に余分な追加工数と外付けの電波混入防止フィルタの追加費用が発生してしまうという欠点があった。
特公昭60−209397号公報
Therefore, when the telephone line 3 is a DSL line, in addition to the built-in filter 41, another radio wave mixing prevention filter (not shown) is used for the low-pass filter 113 of the signal separation adapter 11 and the meter reading data transmission device 40. It was necessary to install it externally. For this reason, there are the disadvantages that an extra man-hour for installation work and an additional cost for an external radio wave contamination prevention filter are generated.
Japanese Patent Publication No. 60-209397

本発明は、外付けの電波防止用フィルタを追加することなく、電波混入を防止できるデータ送信装置を提供することにある。   It is an object of the present invention to provide a data transmission device that can prevent radio wave mixing without adding an external radio wave prevention filter.

上記課題を解決するために、本発明は、DSL信号も流れる電話回線と電話端末またはDSL端末の間に挿入され、前記DSL信号と電話帯域の信号を分離する信号分離アダプタを介して、電話帯域のデータ信号を該電話回線へ送信するデータ送信装置であって、データ機器接続手段と、前記データ機器からのデータを該電話回線へ送信するデータ送信制御手段と、データ送信時に電話端末を該電話回線から切り離す切替え制御手段と、回線又は配線からの電波混入を防止する電波混入防止フィルタを具備すると共に、前記電波混入防止フィルタを前記切替え制御手段と前記データ送信制御手段の間に挿入し、前記電話回線からの電波混入と前記信号分離アダプタから回り込む電波混入を同時に防止することを特徴とする。 In order to solve the above-described problems, the present invention provides a telephone band via a signal separation adapter that is inserted between a telephone line through which a DSL signal also flows and a telephone terminal or a DSL terminal, and separates the DSL signal and the telephone band signal. A data transmission apparatus for transmitting a data signal to the telephone line, a data device connection means, a data transmission control means for transmitting data from the data equipment to the telephone line, and a telephone terminal to the telephone during data transmission. A switching control means for separating from the line, and a radio wave mixing prevention filter for preventing radio wave mixing from the line or wiring, and inserting the radio wave mixing prevention filter between the switching control means and the data transmission control means, It is characterized by simultaneously preventing radio wave contamination from a telephone line and radio wave interference from the signal separation adapter.

本発明によれば、電話回線を使用する測定データ送信装置において、DSL信号分離アダプタを接続しても、外付けの電波混入防止フィルタを追加することなく、電波混入を確実に防止することができる利点がある。   According to the present invention, in a measurement data transmission apparatus using a telephone line, even when a DSL signal separation adapter is connected, radio wave mixing can be reliably prevented without adding an external radio wave mixing prevention filter. There are advantages.

以下、測定データとして、ガスメータや水道メータ等の検針データを送信する検針データ送信装置を例にして本発明の構成を説明する。なお、この検針データ送信装置は一例であって、本発明は電話回線に接続して測定器やセンサ等からのデータを送信するデータ送信装置一般に適用可能である。   Hereinafter, the configuration of the present invention will be described by taking as an example a meter reading data transmission device that transmits meter reading data such as a gas meter or a water meter as measurement data. Note that this meter reading data transmission device is an example, and the present invention is applicable to general data transmission devices that transmit data from measuring instruments, sensors, etc. by connecting to a telephone line.

図1は、本発明の検針データ送信装置4を適用した実施例のシステム構成図である。本発明にかかる検針データ送信装置4は、信号分離アダプタ11を介して電話回線3と宅内配線7に接続される。また、この検針データ送信装置4の配下にはガスメータや水道メータ等の検針装置5が接続される。検針装置5の検針データは、定期的又は所定のタイミングで、検針データ送信装置4により、電話回線3と交換機2を経由してセンター1に送信される。   FIG. 1 is a system configuration diagram of an embodiment to which a meter reading data transmission device 4 of the present invention is applied. The meter reading data transmission device 4 according to the present invention is connected to the telephone line 3 and the home wiring 7 via the signal separation adapter 11. A meter reading device 5 such as a gas meter or a water meter is connected to the meter reading data transmitting device 4. The meter reading data of the meter reading device 5 is transmitted to the center 1 via the telephone line 3 and the exchange 2 by the meter reading data transmitting device 4 at regular or predetermined timing.

図2は、本発明の検針データ送信装置4と信号分離アダプタ11のブロック構成図である。信号分離アダプタ11は電話回線3と交換機2を経由してセンター1と接続される。また、宅内配線7を経由して、スプリッタ12、電話機8、DSLモデム13に接続される。 FIG. 2 is a block diagram of the meter reading data transmission device 4 and the signal separation adapter 11 according to the present invention. The signal separation adapter 11 is connected to the center 1 via the telephone line 3 and the exchange 2. Further, it is connected to the splitter 12, the telephone 8, and the DSL modem 13 via the home wiring 7.

検針データ送信装置4は、切り替え部42と、電波混入防止用フィルタ41と、網制御部43と、制御部44を有して構成される。 The meter-reading data transmission device 4 includes a switching unit 42, a radio wave mixing prevention filter 41, a network control unit 43, and a control unit 44.

信号分離アダプタ11は、ハイパスフィルタ111と、ローパスフィルタ112と、ローパスフィルタ113を有して構成される。電話回線3及び宅内配線7の中を流れる電話音声信号は、ローパスフィルタ112,ローパスフィルタ113及び切り替え部42を通過する。   The signal separation adapter 11 includes a high-pass filter 111, a low-pass filter 112, and a low-pass filter 113. A telephone voice signal flowing through the telephone line 3 and the home wiring 7 passes through the low-pass filter 112, the low-pass filter 113, and the switching unit 42.

切り替え部42は、信号分離アダプタ11を経由して電話回線3に接続され、検針データ送信時には、宅内配線7に接続されている電話機8等を電話回線3から切り離す回路である。 The switching unit 42 is a circuit that is connected to the telephone line 3 via the signal separation adapter 11 and disconnects the telephone 8 and the like connected to the home wiring 7 from the telephone line 3 when meter reading data is transmitted.

電波混入防止用フィルタ41は、切り替え部42と、網制御部43の間に接続され、電話回線3側と宅内配線7側から混入する電波を防止するフィルタである。   The radio wave mixing prevention filter 41 is connected between the switching unit 42 and the network control unit 43 and is a filter that prevents radio waves mixed from the telephone line 3 side and the home wiring 7 side.

網制御部43は、電波混入防止用フィルタ41と、切り替え部42を経由し電話回線3に接続され、電話回線3へのダイヤル発信と、検針データ送信を行うためのインターフェース回路である。   The network control unit 43 is connected to the telephone line 3 via the radio wave mixing prevention filter 41 and the switching unit 42, and is an interface circuit for performing dial transmission to the telephone line 3 and meter reading data transmission.

制御部44は、検針装置5からの検針データをモデム信号に変換し、網制御部43と、電波混入防止フィルタ41と、切り替え部42と、信号分離アダプタ11を経由し、電話回線3へ送出する機能を有する。 The control unit 44 converts the meter-reading data from the meter-reading device 5 into a modem signal, and sends it to the telephone line 3 via the network control unit 43, the radio wave mixing prevention filter 41, the switching unit 42, and the signal separation adapter 11. It has the function to do.

本装置の電波混入防止手段について、図1及び図2を用いて説明する。電波塔9から出力された電波は、波長が長いため電話回線3に電波混入し(電波混入10)、信号分離アダプタ11内のローパスフィルタ112を経由し、検針データ送信装置4に到達する(電波混入101)。検針データ送信装置4に混入した電波(電波混入104)は、切り替え部42を経由し(電波混入106)、網制御部43と、制御部44に電波混入しようとするが、切り替え部42と、網制御部43の間に挿入された電波混入防止フィルタ41により電波混入を防止する。
一方、信号分離アダプタ11に混入した電波は、ハイパスフィルタ111を経由し宅内配線7側にも電波混入し(電波混入102)、ローパスフィルタ113を経由した混入電波が検針データ送信装置4の宅内配線7側に到達する(電波混入103)。そして、検針データ送信装置4内に混入し(電波混入105)、切り替え部42を経由し、網制御部43と、制御部44に電波混入しようとする(電波混入106)。しかし、切り替え部42と、網制御部43に挿入された電波混入防止フィルタ41により電波混入を防止する。
以上説明したように、電波混入防止用フィルタ41を切り替え部42と網制御部43の間に挿入することにより、電話回線3側からの電波混入101と宅内配線7側からの電波混入103を同時に防止することが出来る。従って、本発明によれば、電波混入防止用フィルタを増設する必要がなく経済的である。
The radio wave mixing preventing means of this apparatus will be described with reference to FIGS. Since the radio wave output from the radio tower 9 has a long wavelength, it is mixed into the telephone line 3 (radio wave mixing 10), and reaches the meter-reading data transmission device 4 via the low-pass filter 112 in the signal separation adapter 11 (radio wave). Contamination 101). The radio wave mixed in the meter-reading data transmission device 4 (radio wave mixing 104) tries to be mixed into the network control unit 43 and the control unit 44 via the switching unit 42 (radio wave mixing 106). The radio wave mixing prevention filter 41 inserted between the network control units 43 prevents radio wave mixing.
On the other hand, the radio wave mixed in the signal separation adapter 11 is mixed into the in-home wiring 7 side via the high-pass filter 111 (radio wave mixing 102), and the mixed radio wave through the low-pass filter 113 is in-home wiring of the meter-reading data transmission device 4 7 side (radio wave mixing 103). And it mixes in the meter-reading data transmitter 4 (radio wave mixing 105), tries to mix radio waves into the network control unit 43 and the control unit 44 via the switching unit 42 (radio wave mixing 106). However, radio wave mixing is prevented by the switching unit 42 and the radio wave mixing prevention filter 41 inserted in the network control unit 43.
As described above, by inserting the radio wave mixing prevention filter 41 between the switching unit 42 and the network control unit 43, the radio wave mixing 101 from the telephone line 3 side and the radio wave mixing 103 from the home wiring 7 side are simultaneously performed. Can be prevented. Therefore, according to the present invention, there is no need to add a radio wave mixing prevention filter, which is economical.

本発明のDSL対応検針データ送信装置を適用したシステム構成図System configuration diagram to which the DSL meter reading data transmission device of the present invention is applied 本発明のDSL対応検針データ送信装置の内部構成ブロック図DSL meter reading device according to the present invention block diagram of the internal configuration 従来の検針データ送信装置を適用したシステム構成図System configuration diagram using a conventional meter reading data transmitter 従来の検針データ送信装置の内部構成ブロック図Block diagram of internal configuration of conventional meter reading data transmitter

符号の説明Explanation of symbols

1 検針センター
2 交換機
3 電話回線
4 本発明の検針データ送信装置
40 従来の検針データ送信装置
41 電波混入防止用フィルタ
42 切り替え部
43 網制御部
44 制御部
5 検針装置
6 宅内
7 宅内配線
8 電話機
9 電波塔
10,101〜106 電波混入
11 信号分離アダプタ
111 ハイパスフィルタ
112,113 ローパスフィルタ
12 スプリッタ
13 DSLモデム
DESCRIPTION OF SYMBOLS 1 Meter-reading center 2 Switch 3 Telephone line 4 Meter-reading data transmitter 40 of the present invention Conventional meter-reading data transmitter 41 Radio wave mixing prevention filter 42 Switching unit 43 Network control unit 44 Control unit 5 Meter-reading device 6 In-house 7 In-home wiring 8 Telephone 9 Radio tower 10, 101-106 Radio wave mixture 11 Signal separation adapter 111 High pass filter 112, 113 Low pass filter 12 Splitter
13 DSL modem

Claims (1)

DSL信号も流れる電話回線と電話端末またはDSL端末の間に挿入され、前記DSL信号と電話帯域の信号を分離する信号分離アダプタを介して、電話帯域のデータ信号を該電話回線へ送信するデータ送信装置であって、データ機器接続手段と、前記データ機器からのデータを該電話回線へ送信するデータ送信制御手段と、データ送信時に電話端末を該電話回線から切り離す切替え制御手段と、回線又は配線からの電波混入を防止する電波混入防止フィルタを具備すると共に、前記電波混入防止フィルタを前記切替え制御手段と前記データ送信制御手段の間に挿入し、前記電話回線からの電波混入と前記信号分離アダプタから回り込む電波混入を同時に防止することを特徴とするDSL対応データ送信装置。 Data transmission for transmitting a telephone band data signal to the telephone line via a signal separation adapter that is inserted between the telephone line through which the DSL signal also flows and the telephone terminal or the DSL terminal and separates the DSL signal and the telephone band signal. A data device connecting means, a data transmission control means for transmitting data from the data equipment to the telephone line, a switching control means for disconnecting the telephone terminal from the telephone line at the time of data transmission, and a line or wiring Including a radio wave mixing prevention filter for preventing radio wave mixing, and inserting the radio wave mixing prevention filter between the switching control means and the data transmission control means to prevent radio wave mixing from the telephone line and the signal separation adapter. A DSL-compatible data transmission device that simultaneously prevents mixed-in radio waves.
JP2005335657A 2005-11-21 2005-11-21 Dsl corresponding data transmitting apparatus Pending JP2007142932A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009276115A (en) * 2008-05-13 2009-11-26 Alpine Electronics Inc Operation control device for on-vehicle radar, and control method therefor
WO2013118515A1 (en) * 2012-02-08 2013-08-15 日本電信電話株式会社 Sensor terminal and sensor network system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04129312A (en) * 1990-09-20 1992-04-30 Hitachi Ltd Emi filter for communication channel connection
JP2002252718A (en) * 2001-02-26 2002-09-06 Ricoh Elemex Corp Adaptor for adsl, line network controller incorporating the adaptor for adsl, and central supervisory system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04129312A (en) * 1990-09-20 1992-04-30 Hitachi Ltd Emi filter for communication channel connection
JP2002252718A (en) * 2001-02-26 2002-09-06 Ricoh Elemex Corp Adaptor for adsl, line network controller incorporating the adaptor for adsl, and central supervisory system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009276115A (en) * 2008-05-13 2009-11-26 Alpine Electronics Inc Operation control device for on-vehicle radar, and control method therefor
WO2013118515A1 (en) * 2012-02-08 2013-08-15 日本電信電話株式会社 Sensor terminal and sensor network system
JPWO2013118515A1 (en) * 2012-02-08 2015-05-11 日本電信電話株式会社 Sensor terminal and sensor network system
US9638544B2 (en) 2012-02-08 2017-05-02 Nippon Telegraph And Telephone Corporation Sensor terminal and sensor network system

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