JPH07284170A - Automatic meter inspection system - Google Patents

Automatic meter inspection system

Info

Publication number
JPH07284170A
JPH07284170A JP7105468A JP10546895A JPH07284170A JP H07284170 A JPH07284170 A JP H07284170A JP 7105468 A JP7105468 A JP 7105468A JP 10546895 A JP10546895 A JP 10546895A JP H07284170 A JPH07284170 A JP H07284170A
Authority
JP
Japan
Prior art keywords
transmitting
measurement data
timing
wireless communication
receiving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP7105468A
Other languages
Japanese (ja)
Other versions
JP3380362B2 (en
Inventor
Terue Matsumura
照恵 松村
Yoshio Horiike
良雄 堀池
Yoshiyuki Yokoajiro
義幸 横網代
Masahiro Yamamoto
雅弘 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP10546895A priority Critical patent/JP3380362B2/en
Publication of JPH07284170A publication Critical patent/JPH07284170A/en
Application granted granted Critical
Publication of JP3380362B2 publication Critical patent/JP3380362B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To provide the automatic meter inspection system in which synchronization for intermittent reception is surely matched regardless of disturbance so as to extend the service life of a battery. CONSTITUTION:The system consists of a 1st equipment comprising a flow meter 2, a storage means 3 and a 1st radio communication equipment 23 and of a 2nd equipment comprising a data collection means 12 connecting to a telephone line 9 and a 2nd radio communication equipment 29, and the radio communication equipment is made up of a transmission reception means 4 sending/receiving a radio wave, an intermittent control means 22 operating the transmission reception means 4 intermittently at a time interval, a carrier detection means 18 detecting a carrier, a timing revision discrimination means 19 discriminating whether or not the intermittent operation timing is to be revised based on the number of times of carrier, detection, and a timing control means 20 controlling the revision width of the intermittent operation timing and sending the revision width information of the intermittent operation timing time to a communication opposite party for the intermittent operation timing time before the revision.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、ガスメータや水道メー
タ、電力メータ等によりガス、水道、電気等の使用量の
積算値を計測し、遠隔より前記積算値を吸い上げるため
の自動検針システムに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic meter reading system for measuring an integrated value of the amount of gas, water, electricity, etc. used by a gas meter, a water meter, an electric power meter or the like and remotely sucking the integrated value. Is.

【0002】[0002]

【従来の技術】近年、電話回線等を利用して遠隔よりメ
ータで計測した積算値を吸い上げるいわゆる自動検針シ
ステムが導入されてきている。さらに電話回線とメータ
との間を無線回線により接続するこころみもなされてい
る。図4に無線を用いた従来の自動検針システムのブロ
ック図を示し説明する。図4において、1は家庭に配管
されたガス配管、2はガス配管1の途中に設けられ対象
家庭でのガスの使用量を計測するガス流量計(いわゆる
ガスメータとよばれる)、3は記憶手段、4は送受信手
段、5は信号発生手段、6はフェーズロックドループ手
段(以下PLL手段と呼ぶ)、7は間欠制御手段であ
る。送受信手段4、信号発生手段5、PLL手段6、間
欠制御手段7で第一の無線通信装置8を構成している。
9は公衆電話回線、10は公衆電話回線9に接続される
ノーリンギング網制御手段(以下T−NCUと呼ぶ)、
11はインターフェース手段であり、T−NCU10と
インターフェース手段11でデータ収集手段12を構成
している。13は送受信手段、14は信号発生手段、1
5はPLL手段、16は間欠制御手段である。送受信手
段13、信号発生手段14、PLL手段15、間欠制御
手段16で第二の無線通信装置17を構成している。自
動検針システムは電源として電池駆動が求められる。そ
こで消費電流を削減するために無線通信装置8、17は
間欠動作方式を採用している。間欠制御手段7及び16
では例えば30秒間隔で20m秒だけ送受信手段4及び
13に電源を供給し受信状態になる。データ収集手段1
2はセンター装置(図4には図示していない)から電話
回線9を介してノーリンギング接続要求を受信するとデ
ータ収集手段12は電話回線9を介してセンター装置と
接続を行う。次にセンター装置より記憶手段3を起動す
る起動電文を送信する。前記起動電文はT−NCU1
0、インターフェース11を介して送受信手段13に入
力する。送受信手段13では間欠制御手段16で制御さ
れる30秒毎のタイミング時に前記起動電文を電波に乗
せて送信する。使用電波として近年小電力無線として利
用が認められている400MHz帯の電波が用いられ
る。信号発生手段14とPLL手段15、及び信号発生
手段5とPLL手段6は送受信を行う電波の周波数を選
択するものである。送受信手段4で受信した起動電文は
記憶手段3を起動する。流量計2により計測されたガス
検針値は記憶手段3により電子的に記憶されている。起
動電文により記憶手段3が起動されると記憶している検
針値データを送受信手段4より電波に乗せて送信する。
送信された検針値データは送受信手段13で受信され、
データ収集手段12、電話回線9を介してセンター装置
に伝送される。
2. Description of the Related Art In recent years, a so-called automatic meter reading system has been introduced which absorbs an integrated value measured by a meter from a remote place using a telephone line or the like. In addition, it has been attempted to connect the telephone line and the meter by a wireless line. A block diagram of a conventional automatic meter reading system using wireless is shown in FIG. 4 and explained. In FIG. 4, reference numeral 1 is a gas pipe connected to a home, 2 is a gas flow meter (so-called gas meter) provided in the middle of the gas pipe 1 for measuring the amount of gas used in the target home, and 3 is a storage means. Reference numeral 4 is a transmitting / receiving means, 5 is a signal generating means, 6 is a phase locked loop means (hereinafter referred to as PLL means), and 7 is an intermittent control means. The transmission / reception means 4, the signal generation means 5, the PLL means 6, and the intermittent control means 7 constitute a first wireless communication device 8.
9 is a public telephone line, 10 is a no-ringing network control means (hereinafter referred to as T-NCU) connected to the public telephone line 9,
Reference numeral 11 denotes an interface means, and the T-NCU 10 and the interface means 11 constitute a data collecting means 12. 13 is a transmitting / receiving means, 14 is a signal generating means, 1
Reference numeral 5 is a PLL means, and 16 is an intermittent control means. The transmitting / receiving means 13, the signal generating means 14, the PLL means 15, and the intermittent control means 16 constitute a second wireless communication device 17. The automatic meter reading system requires a battery drive as a power source. Therefore, in order to reduce the current consumption, the wireless communication devices 8 and 17 employ the intermittent operation method. Intermittent control means 7 and 16
Then, for example, power is supplied to the transmitting / receiving means 4 and 13 for 20 ms at intervals of 30 seconds to enter the receiving state. Data collection means 1
When 2 receives a no-ringing connection request from the center device (not shown in FIG. 4) via the telephone line 9, the data collecting means 12 connects with the center device via the telephone line 9. Next, the activation message for activating the storage means 3 is transmitted from the center device. The activation message is T-NCU1.
0, and input to the transmitting / receiving means 13 via the interface 11. The transmission / reception unit 13 transmits the activation message on radio waves at the timing of every 30 seconds controlled by the intermittent control unit 16. As a radio wave to be used, a radio wave in the 400 MHz band, which has recently been approved for use as a low power radio, is used. The signal generating means 14 and the PLL means 15, and the signal generating means 5 and the PLL means 6 select the frequency of the radio wave to be transmitted and received. The activation message received by the transmission / reception means 4 activates the storage means 3. The gas meter reading value measured by the flow meter 2 is electronically stored in the storage means 3. When the storage means 3 is activated by the activation message, the stored meter reading value data is transmitted from the transmission / reception means 4 on the radio wave.
The transmitted meter reading value data is received by the transmitting / receiving means 13,
The data is transmitted to the center device via the data collecting means 12 and the telephone line 9.

【0003】次に間欠制御手段7と間欠制御手段16の
動作について図5を参照しながら説明する。図5の
(a)は間欠制御手段16の動作タイミングを示す図、
図5の(b)は間欠制御手段7の動作タイミングを示す
図である。図5(a)に示すように間欠制御手段16は
T1秒毎の受信動作タイミングで送受信手段13を受信
状態にする。T1は例えば30秒である。そしてT1の
整数倍であるT2秒毎の送信タイミングで送受信手段1
3は同期合わせ信号を送信する。T2は例えば10分で
ある。一方間欠制御手段7は図5(b)に示すように図
5(a)と同期したT1秒ごとの受信動作タイミングで
送受信手段4を受信状態にする。そしてT2毎に同期合
わせ信号を受信する。同期合わせ信号を受信すると間欠
制御手段7は受信した同期合わせ信号を基に間欠制御手
段16の送信タイミングに自己の受信タイミングを合わ
せる。これにより間欠制御手段7と間欠制御手段16の
送受信タイミングの誤差をT2秒毎に補正することがで
きる。次に妨害があった場合について説明する。図5
(c)に妨害信号のタイミングを示す。同期合わせ信号
の送受信タイミング時に妨害があると次のT2秒後の送
受信タイミング時に同期合わせ信号を送受信する。
Next, the operation of the intermittent control means 7 and the intermittent control means 16 will be described with reference to FIG. FIG. 5A is a diagram showing the operation timing of the intermittent control means 16,
FIG. 5B is a diagram showing the operation timing of the intermittent control means 7. As shown in FIG. 5A, the intermittent control means 16 sets the transmitting / receiving means 13 in the receiving state at the receiving operation timing every T1 seconds. T1 is, for example, 30 seconds. Then, the transmitting / receiving means 1 is transmitted at a transmission timing of every T2 seconds which is an integral multiple of T1.
3 transmits a synchronization signal. T2 is, for example, 10 minutes. On the other hand, the intermittent control means 7 puts the transmission / reception means 4 into the reception state at the reception operation timing every T1 seconds synchronized with FIG. 5 (a), as shown in FIG. 5 (b). Then, the synchronization signal is received every T2. Upon receiving the synchronization signal, the intermittent control means 7 adjusts its own reception timing to the transmission timing of the intermittent control means 16 based on the received synchronization signal. As a result, the error in the transmission / reception timing between the intermittent control means 7 and the intermittent control means 16 can be corrected every T2 seconds. Next, the case where there is interference will be described. Figure 5
The timing of the interfering signal is shown in (c). If there is interference at the transmission / reception timing of the synchronization signal, the synchronization signal is transmitted / received at the transmission / reception timing T2 seconds later.

【0004】[0004]

【発明が解決しようとする課題】しかしながら上記従来
の自動検針システムの構成では、同期合わせ信号の送受
信タイミングはT2秒毎に決まっているため、送受信タ
イミングに妨害信号があるとT2毎の送受信タイミング
に同期合わせ信号を送受信できない場合がある。すると
次のT2秒のタイミングに同期合わせ信号を送受信する
ことになる。そのため同期合わせ間隔が(2×T2)秒
になってしまうため間欠制御手段7と間欠制御手段16
の送受信タイミングの誤差が大きくなり極端な場合同期
がずれて通信ができなくなってしまう。そのため同期合
わせ間隔T2秒を大きくできないという課題があった。
However, in the configuration of the above-described conventional automatic meter reading system, the transmission / reception timing of the synchronization signal is determined every T2 seconds. Therefore, if there is an interfering signal in the transmission / reception timing, the transmission / reception timing of each T2 is set. It may not be possible to send and receive synchronization signals. Then, the synchronization signal is transmitted and received at the timing of the next T2 seconds. Therefore, the synchronization interval becomes (2 × T2) seconds, so the intermittent control means 7 and the intermittent control means 16
In the extreme case, the transmission / reception timing error becomes large, and in an extreme case, the synchronization is lost and communication becomes impossible. Therefore, there is a problem in that the synchronization interval T2 seconds cannot be increased.

【0005】本発明の自動検針システムは上記課題を解
決するもので、妨害信号があっても確実に同期合わせ信
号を送受信することのできる自動検針システムを実現す
ることを目的としたものである。
The automatic meter reading system of the present invention solves the above-mentioned problems, and an object thereof is to realize an automatic meter reading system capable of surely transmitting and receiving a synchronization signal even if there is an interfering signal.

【0006】また上記従来の自動検針システムでは、同
期がずれて通信ができなくなることを防ぐために同期合
わせ間隔T2秒を余裕を考えて小さい値にしておく必要
があり、そのため消費電流が大きくなり電池が大きくな
ってしまうという課題があった。自動検針システムでは
流量計に電池及び無線通信装置を実装する必要があり電
池の大きさは実装上大きな問題である。
Further, in the above conventional automatic meter reading system, it is necessary to set the synchronization interval T2 seconds to a small value in consideration of a margin in order to prevent the communication from being lost due to the loss of synchronization. There was a problem that became large. In the automatic meter reading system, it is necessary to mount a battery and a wireless communication device on the flow meter, and the size of the battery is a big problem in mounting.

【0007】本発明の自動検針システムは上記課題を解
決するもので、電池が実装できかつ電池交換なしに10
年間動作し続ける自動検針システムを実現することを目
的としたものでもある。
The automatic meter reading system of the present invention solves the above-mentioned problems.
It is also intended to realize an automatic meter reading system that continues to operate for years.

【0008】[0008]

【課題を解決するための手段】上記目的を達成するため
に、本発明の自動検針システムは、流量計と、流量計で
の計測データを電子的に記憶する記憶手段、前記記憶手
段からの計測データ及び前記記憶手段への計測データ要
求信号を送受信する第一の無線通信装置と、前記流量計
の計測データを収集するデータ収集手段、前記データ収
集手段からの計測データ要求信号及び前記流量計からの
計測データを送受信する第二の無線通信装置とを具備
し、前記第一の無線通信装置あるいは第二の無線通信装
置は、電波を送受信する送受信手段と、前記送受信手段
をある時間間隔で間欠的に動作させる間欠制御手段と、
前記送受信手段からの受信信号によりキャリア検出を行
うキャリア検出手段と、前記キャリア検出手段でのキャ
リア検出回数により前記間欠制御手段の間欠動作タイミ
ングを変更すべきかどうか判定するタイミング変更判定
手段と、前記タイミング変更判定手段でタイミングを変
更すべきであると判定した時前記間欠動作タイミング時
間の変更要求を変更前の間欠動作タイミング時間で通信
相手に伝送するタイミング制御手段とで構成されてい
る。
In order to achieve the above object, an automatic meter reading system of the present invention comprises a flow meter, a storage means for electronically storing measurement data of the flow meter, and a measurement from the storage means. A first wireless communication device for transmitting and receiving data and a measurement data request signal to the storage means, a data collection means for collecting measurement data of the flow meter, a measurement data request signal from the data collection means and the flow meter And a second wireless communication device for transmitting and receiving measurement data, wherein the first wireless communication device or the second wireless communication device intermittently connects the transmitting and receiving means for transmitting and receiving radio waves and the transmitting and receiving means at a certain time interval. Intermittent control means to operate automatically,
Carrier detection means for performing carrier detection by a received signal from the transmission / reception means, timing change determination means for determining whether or not the intermittent operation timing of the intermittent control means should be changed according to the number of carrier detections by the carrier detection means, and the timing The timing control means transmits the request for changing the intermittent operation timing time to the communication partner at the intermittent operation timing time before the change when the change determination means determines that the timing should be changed.

【0009】さらに本発明の自動検針システムは、流量
計と、流量計での計測データを電子的に記憶する記憶手
段、前記記憶手段からの計測データ及び前記記憶手段へ
の計測データ要求信号を送受信する第一の無線通信装置
と、前記流量計の計測データを収集するデータ収集手
段、前記データ収集手段からの計測データ要求信号及び
前記流量計からの計測データを送受信する第二の無線通
信装置とを具備し、前記第一の無線通信装置あるいは第
二の無線通信装置は、電波を送受信する送受信手段と、
前記送受信手段をある時間間隔で間欠的に動作させる間
欠制御手段と、前記送受信手段からの受信信号によりキ
ャリア検出を行うキャリア検出手段と、前記キャリア検
出手段でのキャリア検出回数により前記間欠制御手段の
間欠動作タイミングを変更すべきかどうか判定するタイ
ミング変更判定手段と、前記タイミング変更判定手段で
タイミングを変更すべきであると判定した時前記間欠制
御手段での間欠動作タイミング時間の変更幅を制御する
とともに前記間欠動作タイミング時間の変更要求及び変
更幅情報を変更前の間欠動作タイミング時間で通信相手
に伝送するタイミング制御手段とで構成されている。
Further, the automatic meter reading system of the present invention transmits / receives a flow meter, a storage means for electronically storing the measurement data of the flow meter, the measurement data from the storage means and a measurement data request signal to the storage means. A first wireless communication device, a data collection unit that collects measurement data of the flow meter, a second wireless communication device that transmits and receives a measurement data request signal from the data collection unit and measurement data from the flow meter. Wherein the first wireless communication device or the second wireless communication device, a transmitting and receiving means for transmitting and receiving radio waves,
Intermittent control means for operating the transmitting / receiving means intermittently at a certain time interval, carrier detecting means for performing carrier detection by a received signal from the transmitting / receiving means, and intermittent control means for controlling the number of carriers detected by the carrier detecting means. Timing change determining means for determining whether or not the intermittent operation timing should be changed, and when the timing change determining means determines that the timing should be changed, the intermittent control timing means controls the change range of the intermittent operation timing time. And a timing control means for transmitting the change request of the intermittent operation timing time and the change width information to the communication partner at the intermittent operation timing time before the change.

【0010】さらに本発明の自動検針システムは、流量
計と、流量計での計測データを電子的に記憶する記憶手
段、前記記憶手段からの計測データ及び前記記憶手段へ
の計測データ要求信号を送受信する第一の無線通信装置
と、前記流量計の計測データを収集するデータ収集手
段、前記データ収集手段からの計測データ要求信号及び
前記流量計からの計測データを送受信する第二の無線通
信装置とを具備し、前記第一の無線通信装置あるいは第
二の無線通信装置は、電波を送受信する送受信手段と、
前記送受信手段をある時間間隔で間欠的に動作させる間
欠制御手段と、前記送受信手段で前記間欠動作タイミン
グ時間の変更要求及び変更幅情報を受信すると前記間欠
制御手段での間欠動作タイミング時間の変更幅を制御す
るタイミング制御手段とで構成されている。
Further, the automatic meter-reading system of the present invention transmits and receives a flow meter, a storage means for electronically storing measurement data of the flow meter, measurement data from the storage means, and a measurement data request signal to the storage means. A first wireless communication device, a data collection unit that collects measurement data of the flow meter, a second wireless communication device that transmits and receives a measurement data request signal from the data collection unit and measurement data from the flow meter. Wherein the first wireless communication device or the second wireless communication device, a transmitting and receiving means for transmitting and receiving radio waves,
Intermittent control means for intermittently operating the transmitting / receiving means at a certain time interval, and a change width of the intermittent operation timing time in the intermittent control means when the transmitting / receiving means receives the change request and the change width information of the intermittent operation timing time. And timing control means for controlling.

【0011】さらに本発明の自動検針システムは、流量
計と、流量計での計測データを電子的に記憶する記憶手
段、前記記憶手段からの計測データ及び前記記憶手段へ
の計測データ要求信号を送受信する第一の無線通信装置
と、前記流量計の計測データを収集するデータ収集手
段、前記データ収集手段からの計測データ要求信号及び
前記流量計からの計測データを送受信する第二の無線通
信装置とを具備し、前記第一の無線通信装置あるいは第
二の無線通信装置は、電波を送受信する送受信手段と、
前記送受信手段をある時間間隔で間欠的に動作させる間
欠制御手段と、前記送受信手段の送受信チャンネルを選
択するための信号発生手段と、前記信号発生手段の発振
周波数を制御するフェーズロックドループ手段と、前記
信号発生手段の発振周波数が所定の周波数になるまでの
時間を計測するロック時間計測手段と、前記送受信手段
からの受信信号によりキャリア検出を行うキャリア検出
手段と、前記キャリア検出手段でのキャリア検出回数に
より前記間欠制御手段の間欠動作タイミングを変更すべ
きかどうか判定するタイミング変更判定手段と、前記タ
イミング変更判定手段でタイミングを変更すべきである
と判定した時前記ロック時間計測手段で計測した時間に
基づき前記間欠制御手段での間欠動作タイミング時間の
変更幅を制御するとともに前記間欠動作タイミング時間
の変更要求及び変更幅情報を変更前の間欠動作タイミン
グ時間で通信相手に伝送するタイミング制御手段とで構
成されている。
Further, the automatic meter-reading system of the present invention transmits and receives a flow meter, a storage means for electronically storing measurement data of the flow meter, measurement data from the storage means, and a measurement data request signal to the storage means. A first wireless communication device, a data collection unit that collects measurement data of the flow meter, a second wireless communication device that transmits and receives a measurement data request signal from the data collection unit and measurement data from the flow meter. Wherein the first wireless communication device or the second wireless communication device, a transmitting and receiving means for transmitting and receiving radio waves,
Intermittent control means for intermittently operating the transmitting and receiving means at a certain time interval, signal generating means for selecting a transmitting and receiving channel of the transmitting and receiving means, phase locked loop means for controlling the oscillation frequency of the signal generating means, Lock time measuring means for measuring the time until the oscillation frequency of the signal generating means reaches a predetermined frequency, carrier detecting means for detecting a carrier by a received signal from the transmitting / receiving means, and carrier detecting by the carrier detecting means. The timing change determination means for determining whether or not the intermittent operation timing of the intermittent control means should be changed according to the number of times, and the time measured by the lock time measurement means when the timing change determination means determines that the timing should be changed. Based on the intermittent control means, the change range of the intermittent operation timing time is controlled based on Are both composed of a timing control means for transmitting to the communication partner in the intermittent operation timing Time was a change request and change the width information of the intermittent operation timing time.

【0012】さらに本発明の自動検針システムは、流量
計と、流量計での計測データを電子的に記憶する記憶手
段、前記記憶手段からの計測データ及び前記記憶手段へ
の計測データ要求信号を送受信する第一の無線通信装置
と、前記流量計の計測データを収集するデータ収集手
段、前記データ収集手段からの計測データ要求信号及び
前記流量計からの計測データを送受信する第二の無線通
信装置とを具備し、前記第一の無線通信装置あるいは第
二の無線通信装置は、電波を送受信する送受信手段と、
前記送受信手段をある時間間隔で間欠的に動作させる間
欠制御手段と、前記送受信手段の送受信チャンネルを選
択するための信号発生手段と、前記信号発生手段の発振
周波数を制御するフェーズロックドループ手段と、前記
信号発生手段の発振周波数が所定の周波数になるまでの
時間を計測するロック時間計測手段と、前記送受信手段
で間欠動作タイミング変更要求を受信すると前記ロック
時間計測手段で計測した時間に基づき前記間欠制御手段
での間欠動作タイミング時間の変更幅を制御するととも
に前記間欠動作タイミング時間の変更幅情報を変更前の
間欠動作タイミング時間で通信相手に伝送するタイミン
グ制御手段とで構成されている。
Further, the automatic meter reading system of the present invention transmits / receives a flow meter, a storage means for electronically storing measurement data of the flow meter, measurement data from the storage means and a measurement data request signal to the storage means. A first wireless communication device, a data collection unit that collects measurement data of the flow meter, a second wireless communication device that transmits and receives a measurement data request signal from the data collection unit and measurement data from the flow meter. Wherein the first wireless communication device or the second wireless communication device, a transmitting and receiving means for transmitting and receiving radio waves,
Intermittent control means for intermittently operating the transmitting and receiving means at a certain time interval, signal generating means for selecting a transmitting and receiving channel of the transmitting and receiving means, phase locked loop means for controlling the oscillation frequency of the signal generating means, The lock time measuring means for measuring the time until the oscillation frequency of the signal generating means reaches a predetermined frequency, and the intermittent operation based on the time measured by the lock time measuring means when the transmitting / receiving means receives the intermittent operation timing change request. The control means controls the change width of the intermittent operation timing time and transmits the change width information of the intermittent operation timing time to the communication partner at the intermittent operation timing time before the change.

【0013】さらに本発明の自動検針システムの送受信
手段は、間欠動作タイミングの整数倍の時間間隔で通信
相手と間欠動作タイミングの同期を取るための同期合わ
せ信号を送信するものであって、前記同期合わせ信号を
送信できない時あるいは同期合わせ信号に対する応答信
号を受信できなかった時には次の間欠動作タイミングで
同期合わせ信号を送信するものである。
Further, the transmitting / receiving means of the automatic meter reading system of the present invention transmits a synchronization signal for synchronizing the intermittent operation timing with the communication partner at a time interval which is an integral multiple of the intermittent operation timing, and the synchronization is performed. When the synchronization signal cannot be transmitted or the response signal to the synchronization signal cannot be received, the synchronization signal is transmitted at the next intermittent operation timing.

【0014】さらに本発明の自動検針システムの送受信
手段は、送受信手段は間欠動作タイミングの整数倍の時
間間隔で通信相手と間欠動作タイミングの同期を取るた
めの同期合わせ信号を受信するものであって、前記同期
合わせ信号を受信できなかった時には次の間欠動作タイ
ミングで同期合わせ信号長より短い時間間隔で間欠的に
複数回同期合わせ信号の有無を確認するものである。
Further, the transmitting / receiving means of the automatic meter reading system of the present invention is such that the transmitting / receiving means receives a synchronization signal for synchronizing the intermittent operation timing with the communication partner at a time interval which is an integral multiple of the intermittent operation timing. When the synchronization signal cannot be received, the presence or absence of the synchronization signal is intermittently confirmed at the next intermittent operation timing at a time interval shorter than the synchronization signal length.

【0015】[0015]

【作用】本発明の自動検針システムは上記構成によっ
て、妨害信号があってもT2秒に近いT1秒の整数倍の
タイミングで同期合わせ信号を送ることができるため、
同期合わせ信号の送受信間隔T2秒を長くすることがで
きることとなる。
The automatic meter reading system of the present invention can send the synchronization signal at the timing of an integral multiple of T1 seconds, which is close to T2 seconds, even if there is an interfering signal.
Therefore, the transmission / reception interval T2 seconds of the synchronization signal can be lengthened.

【0016】さらに本発明の自動検針システムは上記構
成によって、電池を流量計に実装できかつ電池で10年
間動作し続ける自動検針システムを構築できることとな
る。
Further, the automatic meter-reading system of the present invention has the above-described structure, and can be constructed with an automatic meter-reading system in which a battery can be mounted on a flow meter and which can be operated by the battery for 10 years.

【0017】[0017]

【実施例】以下本発明の実施例を図1を参照して説明す
る。従来例と同一の機能ブロックには同一の番号を付与
している。図1において、1は家庭に配管されたガス配
管、2はガス配管1の途中に設けられ対象家庭でのガス
の使用量を計測するガス流量計、3は記憶手段、4は送
受信手段、5は信号発生手段、6はPLL手段、18は
キャリア検出手段、19はタイミング変更判定手段、2
0はタイミング制御手段、21はロック時間計測手段、
22は間欠制御手段である。送受信手段4、信号発生手
段5、PLL手段6、キャリア検出手段18、タイミン
グ変更判定手段19、タイミング制御手段20、ロック
時間計測手段21、間欠制御手段22で第一の無線通信
装置23を構成している。9は公衆電話回線、10は公
衆電話回線9に接続されるT−NCU、11はインター
フェース手段であり、T−NCU10とインターフェー
ス手段11でデータ収集手段12を構成している。13
は送受信手段、14は信号発生手段、15はPLL手
段、24はキャリア検出手段、25はタイミング変更判
定手段、26はタイミング制御手段、27はロック時間
計測手段、28は間欠制御手段である。送受信手段1
3、信号発生手段14、PLL手段15、キャリア検出
手段24、タイミング変更判定手段25、タイミング制
御手段26、ロック時間計測手段27、間欠制御手段2
8で第二の無線通信装置29を構成している。図1の本
発明の自動検針システムは電池で駆動されかつ電池寿命
をのばすために間欠受信方式が採用されている。間欠制
御手段22と間欠制御手段28の動作について図2を参
照しながら説明する。図2の(a)は間欠制御手段28
の動作タイミングを示す図、図2の(b)は間欠制御手
段22の動作タイミングを示す図である。図2(a)に
示すように間欠制御手段28はT1秒毎の受信動作タイ
ミングで送受信手段13を受信状態にする。T1は例え
ば30秒である。そしてT1の整数倍であるT2秒毎の
送信タイミングで送受信手段13は同期合わせ信号を送
信する。T2は例えば10分である。一方間欠制御手段
22は図2(b)に示すように図2(a)と同期したT
1秒ごとの受信動作タイミングで送受信手段4を受信状
態にする。そしてT2毎に同期合わせ信号を受信する。
同期合わせ信号を受信すると間欠制御手段22は受信し
た同期合わせ信号を基に間欠制御手段28の送信タイミ
ングに自己の受信タイミングを合わせる。これにより間
欠制御手段22と間欠制御手段28の送受信タイミング
の誤差をT2秒毎に補正することができる。さて図2
(c)に送受信手段13に対する妨害信号を示す。図2
(c)に示すごとくT1秒毎の受信タイミングに妨害信
号が生じると、キャリア検出手段24で妨害信号が生じ
たことを検出しタイミング変更判定手段25に伝える。
タイミング変更判定手段25ではT2秒の間に何回妨害
信号があるかをカウントし、あらかじめ定めたある回数
を越えた時タイミングを変更すべきであると判定する。
そしてタイミング制御手段26でタイミング変更時間を
決定する。タイミング変更時間の決定は、ロック時間計
測手段27の計測値を用いて行われる。ロック時間計測
手段27では送受信タイミング時に、PLL手段14に
データを設定してから信号発生手段15の発振周波数が
ある範囲内になるまでの時間を計測する。この時間は温
度等の環境条件や種々の条件により毎回異なる。そのた
めランダムな値を得ることができる。タイミング変更判
定手段25においてタイミングを変更すべきであると判
定するとタイミング制御手段26は、計測された値に対
応するT3秒をタイミング変更時間と決定する。そして
次のT2秒の送信タイミングにおいて送受信手段13よ
りタイミング変更要求及びタイミング変更時間T3秒を
通信相手に報知する。その後間欠制御手段28を制御
し、次の受信動作をT3秒に行う。図2(a)にその様
子を示す。図2(a)の例ではT3秒=15秒で示して
いる。一方送受信手段4においてタイミング変更要求及
びタイミング変更時間T3秒を受信すると間欠制御手段
22は次の動作時間をT3秒後に設定する。図2(b)
にその様子を示す。このようにタイミングを変更するこ
とにより以後、妨害信号が発生するタイミングをさける
ことができる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. The same functional blocks as in the conventional example are given the same numbers. In FIG. 1, 1 is a gas pipe connected to a home, 2 is a gas flow meter provided in the middle of the gas pipe 1 for measuring the amount of gas used in the target home, 3 is a storage unit, 4 is a transmission / reception unit, 5 Is a signal generating means, 6 is a PLL means, 18 is a carrier detecting means, 19 is a timing change judging means, 2
0 is timing control means, 21 is lock time measuring means,
Reference numeral 22 is an intermittent control means. The transmission / reception unit 4, the signal generation unit 5, the PLL unit 6, the carrier detection unit 18, the timing change determination unit 19, the timing control unit 20, the lock time measurement unit 21, and the intermittent control unit 22 constitute a first wireless communication device 23. ing. Reference numeral 9 is a public telephone line, 10 is a T-NCU connected to the public telephone line 9, 11 is an interface means, and the T-NCU 10 and the interface means 11 constitute a data collecting means 12. Thirteen
Is a transmitting / receiving means, 14 is a signal generating means, 15 is a PLL means, 24 is a carrier detecting means, 25 is a timing change determining means, 26 is a timing control means, 27 is a lock time measuring means, and 28 is an intermittent control means. Transmission / reception means 1
3, signal generation means 14, PLL means 15, carrier detection means 24, timing change determination means 25, timing control means 26, lock time measurement means 27, intermittent control means 2
A second wireless communication device 29 is constituted by 8. The automatic meter reading system of the present invention shown in FIG. 1 is driven by a battery and employs an intermittent reception system to extend the battery life. The operations of the intermittent control means 22 and 28 will be described with reference to FIG. 2A shows the intermittent control means 28.
2A and 2B are diagrams showing the operation timing of the intermittent control means 22. As shown in FIG. 2A, the intermittent control means 28 puts the transmitting / receiving means 13 into the receiving state at the receiving operation timing every T1 seconds. T1 is, for example, 30 seconds. Then, the transmitting / receiving means 13 transmits the synchronization signal at the transmission timing every T2 seconds which is an integral multiple of T1. T2 is, for example, 10 minutes. On the other hand, as shown in FIG. 2B, the intermittent control means 22 synchronizes with T shown in FIG.
The transmitting / receiving means 4 is put into the receiving state at the receiving operation timing every one second. Then, the synchronization signal is received every T2.
Upon receiving the synchronization signal, the intermittent control means 22 adjusts its own reception timing to the transmission timing of the intermittent control means 28 based on the received synchronization signal. This makes it possible to correct an error in transmission / reception timing between the intermittent control means 22 and the intermittent control means 28 every T2 seconds. Now Fig. 2
An interference signal to the transmitting / receiving means 13 is shown in (c). Figure 2
When an interfering signal occurs at the reception timing of every T1 seconds as shown in (c), the carrier detecting means 24 detects the occurrence of the interfering signal and informs the timing change determining means 25.
The timing change determination means 25 counts how many times there is an interfering signal during T2 seconds, and determines that the timing should be changed when a predetermined number of times is exceeded.
Then, the timing control means 26 determines the timing change time. The timing change time is determined by using the measurement value of the lock time measuring means 27. The lock time measuring means 27 measures the time from setting the data in the PLL means 14 until the oscillation frequency of the signal generating means 15 falls within a certain range at the transmission / reception timing. This time varies every time depending on environmental conditions such as temperature and various conditions. Therefore, a random value can be obtained. When the timing change determination means 25 determines that the timing should be changed, the timing control means 26 determines T3 seconds corresponding to the measured value as the timing change time. Then, at the next transmission timing of T2 seconds, the transmission / reception means 13 notifies the communication partner of the timing change request and the timing change time T3 seconds. After that, the intermittent control means 28 is controlled to perform the next receiving operation at T3 seconds. This is shown in FIG. In the example of FIG. 2A, T3 seconds = 15 seconds. On the other hand, when the transmitting / receiving means 4 receives the timing change request and the timing change time T3 seconds, the intermittent control means 22 sets the next operation time after T3 seconds. Figure 2 (b)
The situation is shown in. By changing the timing in this way, it is possible to avoid the timing at which an interfering signal is generated thereafter.

【0018】上記説明では無線通信装置29の方が妨害
を受けたとして説明したが無線通信装置23が妨害を受
けた場合も同様の動作でタイミング変更判定手段19及
びタイミング制御手段20はタイミングの変更と変更時
間を決定する。そして無線通信装置29からの同期合わ
せ信号に対する応答信号送信時にタイミング変更要求と
タイミング変更時間を送信する。これに基づき無線通信
装置23と無線通信装置29は共にタイミング時間を変
更する。なおタイミング変更時間の決定は無線通信装置
29で行わずに無線通信装置29はタイミング変更要求
のみを送信し、無線通信装置23でロック時間計測手段
21の計測値に基づきタイミング変更時間を決定し、無
線通信装置29にタイミング変更時間を報知する構成で
あってもよい。
In the above description, it was explained that the wireless communication device 29 was disturbed. However, when the wireless communication device 23 is disturbed, the timing change judgment means 19 and the timing control means 20 change the timing by the same operation. And decide the change time. Then, when the response signal to the synchronization signal from the wireless communication device 29 is transmitted, the timing change request and the timing change time are transmitted. Based on this, both the wireless communication device 23 and the wireless communication device 29 change the timing time. The wireless communication device 29 does not determine the timing change time, the wireless communication device 29 transmits only the timing change request, and the wireless communication device 23 determines the timing change time based on the measurement value of the lock time measuring means 21, The configuration may be such that the timing change time is notified to the wireless communication device 29.

【0019】次に同期合わせ信号の送受信タイミングに
妨害を受け同期合わせ信号を送受信できなかった場合に
ついて図3を参照しながら説明する。図3(a)は無線
通信装置29の動作タイミング、図3(b)は無線通信
装置23の動作タイミングである。図3(c)は妨害信
号である。T2秒ごとの同期合わせ信号の送受信時に妨
害を受けると無線通信装置29は同期合わせ信号を送信
できない。仮に同期合わせ信号を送信できたとしても無
線通信装置23が妨害を受けていると応答信号がかえっ
てこない。そこで無線通信装置29は次のT1秒のタイ
ミング時に図3(a)に示すごとく同期合わせ信号を送
信する。一方無線通信装置23ではT1秒のタイミング
時に同期合わせ信号を受信できない場合には間欠制御手
段22の動作により図3(b)に示すごとく次のT1秒
のタイミング時に複数回受信動作を行う。図3(d)に
同期合わせ信号を示し、図3(e)に無線通信装置23
の複数回受信動作のタイミングを示す。同期合わせ信号
のビット同期信号より短い間隔で複数回受信動作を行
う。このように構成することにより無線通信装置23と
無線通信装置28の動作タイミングが多少ずれても無線
通信装置23の複数回受信のうちのどれかの受信タイミ
ングでビット同期信号を検出し同期合わせ信号を受信す
ることができる。
Next, a case where the synchronization signal cannot be transmitted / received due to interference in the transmission / reception timing of the synchronization signal will be described with reference to FIG. 3A shows the operation timing of the wireless communication device 29, and FIG. 3B shows the operation timing of the wireless communication device 23. FIG. 3C shows an interference signal. The wireless communication device 29 cannot transmit the synchronization signal if there is interference during transmission and reception of the synchronization signal every T2 seconds. Even if the synchronization signal could be transmitted, if the wireless communication device 23 is disturbed, the response signal will not be returned. Therefore, the wireless communication device 29 transmits the synchronization signal as shown in FIG. 3A at the next timing of T1 seconds. On the other hand, when the wireless communication device 23 cannot receive the synchronization signal at the timing of T1 seconds, the intermittent control means 22 operates to perform the receiving operation a plurality of times at the next timing of T1 seconds as shown in FIG. FIG. 3D shows the synchronization signal, and FIG. 3E shows the wireless communication device 23.
The timing of the multiple-time receiving operation is shown. The receiving operation is performed a plurality of times at shorter intervals than the bit synchronization signal of the synchronization signal. With this configuration, even if the operation timings of the wireless communication device 23 and the wireless communication device 28 are slightly different, the bit synchronization signal is detected at any one of the reception timings of the multiple receptions of the wireless communication device 23, and the synchronization signal is detected. Can be received.

【0020】電話回線9に接続されているセンター装置
より起動電文がデータ収集手段12を介して無線通信装
置29にあった場合、T1秒の送受信タイミング時に送
受信手段13を介して起動電文を無線通信装置23に伝
送する。起動電文により無線通信装置23と無線通信装
置29は通信モードに入る。無線通信装置23で起動電
文を受信すると、記憶手段3を起動し、記憶手段3に記
憶されている検針値データを送受信手段4を介して無線
通信装置29に伝送する。無線通信装置29で受信され
た検針値データはデータ収集手段12、電話回線9を介
してセンター装置に送られる。その後、センター装置と
記憶手段3の間で何回かのデータのやりとりが行われた
後、センター装置より終了電文が伝送されると無線通信
装置23と無線通信装置29は通信モードを終了する。
通信モードにおいてはT1秒を整数で割ったT4秒(例
えば2秒)ごとのタイミングで送受信を行う。またデー
タ収集手段12は無線通信装置29にデータを送った
後、無線通信装置29よりある時間(例えば10秒)以
内にデータを受信しないとタイムアウトにより電話回線
との接続を切ってしまうものがある。そこで無線通信装
置29はデータ収集手段12が電話回線9との接続を切
る前にデータ収集手段12にダミー電文を送信する。デ
ータ収集手段12はダミー電文を電話回線9を介してセ
ンター装置に伝送する。センター装置はダミー電文を受
信するとダミー応答を返送する。このようにしてデータ
収集手段12のタイムアウトを回避することができる。
なおセンター装置にもタイムアウト時間が設定されてお
り、ダミー電文によりセンター装置のタイムアウトも回
避される。記憶手段3及び流量計2はマイコンメータと
呼ばれるメータに実装され、すでに一般家庭に取り付け
られている。このマイコンメータは無線通信装置23と
のデータのやりとりにおいてタイムアウト時間が設定さ
れている。このタイムアウトを回避するためにダミー電
文として再送要求信号を無線通信装置23は記憶手段3
に伝送する。すると記憶手段3は前回のデータを無線通
信装置23に伝送する。この前回のデータは無線通信装
置23で破棄し、無線通信装置29には伝送しない。こ
の処理によりマイコンメータのタイムアウトを回避する
ことができる。
When the activation message is sent from the center device connected to the telephone line 9 to the wireless communication device 29 via the data collection means 12, the activation message is wirelessly communicated via the transmission / reception means 13 at the transmission / reception timing of T1 seconds. To the device 23. The wireless communication device 23 and the wireless communication device 29 enter the communication mode by the activation message. When the activation message is received by the wireless communication device 23, the storage means 3 is activated, and the meter reading value data stored in the storage means 3 is transmitted to the wireless communication device 29 via the transmission / reception means 4. The meter reading value data received by the wireless communication device 29 is sent to the center device via the data collecting means 12 and the telephone line 9. After that, after several times of data exchange between the center device and the storage means 3, when the end message is transmitted from the center device, the wireless communication device 23 and the wireless communication device 29 end the communication mode.
In the communication mode, transmission / reception is performed at a timing of every T4 seconds (for example, 2 seconds) obtained by dividing T1 seconds by an integer. Further, the data collecting means 12 may disconnect the connection with the telephone line due to a timeout unless the data is received within a certain time (for example, 10 seconds) from the wireless communication device 29 after sending the data to the wireless communication device 29. . Therefore, the wireless communication device 29 transmits a dummy electronic message to the data collecting means 12 before the data collecting means 12 disconnects from the telephone line 9. The data collecting means 12 transmits the dummy electronic message to the center device via the telephone line 9. When the center device receives the dummy message, it returns a dummy response. In this way, the time-out of the data collecting means 12 can be avoided.
A timeout time is also set in the center device, and the timeout of the center device is also avoided by the dummy message. The storage means 3 and the flow meter 2 are mounted on a meter called a microcomputer meter, and are already installed in ordinary households. In this microcomputer meter, a timeout time is set for exchanging data with the wireless communication device 23. In order to avoid this timeout, the wireless communication device 23 sends a resend request signal as a dummy message to the storage means 3.
To transmit. Then, the storage unit 3 transmits the previous data to the wireless communication device 23. The previous data is discarded by the wireless communication device 23 and is not transmitted to the wireless communication device 29. By this processing, the time-out of the microcomputer meter can be avoided.

【0021】[0021]

【発明の効果】以上説明したように本発明の自動検針シ
ステムによれば、T1秒ごとの送受信タイミングに妨害
信号がある場合、送受信タイミングをランダムな時間だ
けずらすことができるため妨害の発生するタイミングを
避けることができることとなる。
As described above, according to the automatic meter reading system of the present invention, when there is an interfering signal in the transmission / reception timing at every T1 seconds, the transmission / reception timing can be shifted by a random time, so that the timing at which the interference occurs. Will be avoided.

【0022】また本発明の自動検針システムによれば、
T2秒ごとの同期合わせ信号の送受信タイミングに妨害
があっても次のT1秒のタイミングで同期合わせ信号を
送信するので通信相手とのタイミング誤差があまり大き
くならないうちに同期合わせ信号の送受信を行うことが
できる。
According to the automatic meter reading system of the present invention,
Even if there is an interference in the transmission / reception timing of the synchronization signal every T2 seconds, the synchronization signal is transmitted at the next T1 second timing, so the synchronization signal should be transmitted / received before the timing error with the communication partner becomes too large. You can

【0023】さらに本発明の自動検針システムによれ
ば、多少通信相手と同期合わせ信号のタイミングがずれ
ても確実に同期合わせ信号を受信できることとなる。
Further, according to the automatic meter reading system of the present invention, the synchronization signal can be reliably received even if the timing of the synchronization signal is slightly different from that of the communication partner.

【0024】そして本発明の自動検針システムを用いれ
ば、妨害による同期はずれを防ぐことにより同期をさが
す動作が不要になるため電池の消耗を防ぐことができ
る。そのため電池を小型にできかつ10年間動作を維持
することができる。
By using the automatic meter-reading system of the present invention, it is possible to prevent the battery from being consumed because the operation for finding the synchronization is not required by preventing the synchronization loss due to the interference. Therefore, the battery can be downsized and the operation can be maintained for 10 years.

【0025】また本発明の自動検針システムを用いれ
ば、検針データの収集を正確に行うことができるという
効果がある。
Further, if the automatic meter reading system of the present invention is used, there is an effect that the meter reading data can be collected accurately.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例における自動検針システムの
ブロック図
FIG. 1 is a block diagram of an automatic meter reading system according to an embodiment of the present invention.

【図2】本発明の一実施例における自動検針システムの
動作タイミング図
FIG. 2 is an operation timing chart of the automatic meter reading system according to the embodiment of the present invention.

【図3】本発明の一実施例における自動検針システムの
他の動作タイミング図
FIG. 3 is another operation timing chart of the automatic meter reading system according to the embodiment of the present invention.

【図4】従来の自動検針システムのブロック図FIG. 4 is a block diagram of a conventional automatic meter reading system.

【図5】従来の自動検針システムの動作タイミング図FIG. 5 is an operation timing chart of a conventional automatic meter reading system.

【符号の説明】 2 流量計 3 記憶手段 4 送受信手段 5 信号発生手段 6 PLL手段 7 タイマー手段 10 T−NCU 12 データ収集手段 13 送受信手段 14 信号発生手段 15 PLL手段 18 キャリア検出手段 19 タイミング変更判定手段 20 タイミング制御手段 21 ロック時間計測手段 22 間欠制御手段 23 無線通信装置 24 キャリア検出手段 25 タイミング変更判定手段 26 タイミング制御手段 27 ロック時間計測手段 28 間欠制御手段 29 無線通信装置[Explanation of Codes] 2 Flowmeter 3 Storage Means 4 Transmission / Reception Means 5 Signal Generation Means 6 PLL Means 7 Timer Means 10 T-NCU 12 Data Collection Means 13 Transmission / Reception Means 14 Signal Generation Means 15 PLL Means 18 Carrier Detection Means 19 Timing Change Judgment Means 20 Timing Control Means 21 Lock Time Measuring Means 22 Intermittent Control Means 23 Wireless Communication Equipment 24 Carrier Detecting Means 25 Timing Change Judging Means 26 Timing Control Means 27 Lock Time Measuring Means 28 Intermittent Control Means 29 Wireless Communication Equipment

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 G08C 17/00 H04B 7/24 D H04L 7/033 H04M 11/00 301 (72)発明者 山本 雅弘 大阪府門真市大字門真1006番地 松下電器 産業株式会社内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Internal reference number FI Technical display location G08C 17/00 H04B 7/24 D H04L 7/033 H04M 11/00 301 (72) Inventor Masahiro Yamamoto 1006 Kadoma, Kadoma-shi, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】流量計と、前記流量計での計測データを電
子的に記憶する記憶手段、前記記憶手段からの計測デー
タ及び前記記憶手段への計測データ要求信号を送受信す
る第一の無線通信装置と、前記流量計の計測データを収
集するデータ収集手段、前記データ収集手段からの計測
データ要求信号及び前記流量計からの計測データを送受
信する第二の無線通信装置とを具備し、前記第一の無線
通信装置あるいは第二の無線通信装置は、電波を送受信
する送受信手段と、前記送受信手段をある時間間隔で間
欠的に動作させる間欠制御手段と、前記送受信手段から
の受信信号によりキャリア検出を行うキャリア検出手段
と、前記キャリア検出手段でのキャリア検出回数により
前記間欠制御手段の間欠動作タイミングを変更すべきか
どうか判定するタイミング変更判定手段と、前記タイミ
ング変更判定手段でタイミングを変更すべきであると判
定した時前記間欠動作タイミング時間の変更要求を変更
前の間欠動作タイミング時間で通信相手に伝送するタイ
ミング制御手段とを備えた自動検針システム。
1. A first wireless communication for transmitting and receiving a flow meter, storage means for electronically storing measurement data of the flow meter, measurement data from the storage means, and a measurement data request signal to the storage means. A second wireless communication device for transmitting and receiving a device, data collection means for collecting measurement data of the flow meter, a measurement data request signal from the data collection means, and measurement data from the flow meter; The first wireless communication device or the second wireless communication device includes a transmission / reception unit that transmits and receives an electric wave, an intermittent control unit that intermittently operates the transmission / reception unit at a certain time interval, and carrier detection based on a received signal from the transmission / reception unit. And a carrier detecting means for determining whether or not the intermittent operation timing of the intermittent controlling means should be changed based on the number of carrier detections by the carrier detecting means. And a timing control means for transmitting the request for changing the intermittent operation timing time to the communication partner at the intermittent operation timing time before the change when the timing change determining means determines that the timing should be changed. An automatic meter reading system equipped.
【請求項2】流量計と、流量計での計測データを電子的
に記憶する記憶手段、前記記憶手段からの計測データ及
び前記記憶手段への計測データ要求信号を送受信する第
一の無線通信装置と、前記流量計の計測データを収集す
るデータ収集手段、前記データ収集手段からの計測デー
タ要求信号及び前記流量計からの計測データを送受信す
る第二の無線通信装置とを具備し、前記第一の無線通信
装置あるいは、第二の無線通信装置は電波を送受信する
送受信手段と、前記送受信手段をある時間間隔で間欠的
に動作させる間欠制御手段と、前記送受信手段からの受
信信号によりキャリア検出を行うキャリア検出手段と、
前記キャリア検出手段でのキャリア検出回数により前記
間欠制御手段の間欠動作タイミングを変更すべきかどう
か判定するタイミング変更判定手段と、前記タイミング
変更判定手段でタイミングを変更すべきであると判定し
た時前記間欠制御手段での間欠動作タイミング時間の変
更幅を制御するとともに前記間欠動作タイミング時間の
変更要求及び変更幅情報を変更前の間欠動作タイミング
時間で通信相手に伝送するタイミング制御手段とを備え
た自動検針システム。
2. A first wireless communication device for transmitting and receiving a flow meter, storage means for electronically storing measurement data from the flow meter, measurement data from the storage means and a measurement data request signal to the storage means. And a second wireless communication device for transmitting and receiving data collection means for collecting measurement data of the flowmeter, a measurement data request signal from the data collection means, and measurement data from the flowmeter. The wireless communication device or the second wireless communication device is a transmitting / receiving unit for transmitting and receiving radio waves, an intermittent control unit for intermittently operating the transmitting / receiving unit at a certain time interval, and carrier detection by a received signal from the transmitting / receiving unit. Carrier detection means to perform,
Timing change determination means for determining whether to change the intermittent operation timing of the intermittent control means based on the number of times of carrier detection by the carrier detection means, and the intermittent operation when the timing change determination means determines that the timing should be changed. Automatic meter reading equipped with a timing control means for controlling the change range of the intermittent operation timing time by the control means and transmitting the change request and the change width information of the intermittent operation timing time to the communication partner at the intermittent operation timing time before the change system.
【請求項3】流量計と、前記流量計での計測データを電
子的に記憶する記憶手段、前記記憶手段からの計測デー
タ及び前記記憶手段への計測データ要求信号を送受信す
る第一の無線通信装置と、前記流量計の計測データを収
集するデータ収集手段、前記データ収集手段からの計測
データ要求信号及び前記流量計からの計測データを送受
信する第二の無線通信装置とを具備し、前記第一の無線
通信装置あるいは第二の無線通信装置は、電波を送受信
する送受信手段と、前記送受信手段をある時間間隔で間
欠的に動作させる間欠制御手段と、前記送受信手段で前
記間欠動作タイミング時間の変更要求及び変更幅情報を
受信すると前記間欠制御手段での間欠動作タイミング時
間の変更幅を制御するタイミング制御手段とを備えた自
動検針システム。
3. A first wireless communication for transmitting and receiving a flow meter, storage means for electronically storing measurement data of the flow meter, measurement data from the storage means and a measurement data request signal to the storage means. A second wireless communication device for transmitting and receiving a device, data collection means for collecting measurement data of the flow meter, a measurement data request signal from the data collection means, and measurement data from the flow meter; The first wireless communication device or the second wireless communication device includes a transmitting / receiving unit for transmitting and receiving radio waves, an intermittent control unit for intermittently operating the transmitting / receiving unit at a certain time interval, and the intermittent operation timing time of the transmitting / receiving unit. An automatic meter-reading system, comprising: a timing control means for controlling the change width of the intermittent operation timing time by the intermittent control means when receiving the change request and the change width information.
【請求項4】流量計と、前記流量計での計測データを電
子的に記憶する記憶手段、前記記憶手段からの計測デー
タ及び前記記憶手段への計測データ要求信号を送受信す
る第一の無線通信装置と、前記流量計の計測データを収
集するデータ収集手段、前記データ収集手段からの計測
データ要求信号及び前記流量計からの計測データを送受
信する第二の無線通信装置とを具備し、前記第一の無線
通信装置あるいは第二の無線通信装置は、電波を送受信
する送受信手段と、前記送受信手段をある時間間隔で間
欠的に動作させる間欠制御手段と、前記送受信手段の送
受信チャンネルを選択するための信号発生手段と、前記
信号発生手段の発振周波数を制御するフェーズロックド
ループ手段と、前記信号発生手段の発振周波数が所定の
周波数になるまでの時間を計測するロック時間計測手段
と、前記送受信手段からの受信信号によりキャリア検出
を行うキャリア検出手段と、前記キャリア検出手段での
キャリア検出回数により前記間欠制御手段の間欠動作タ
イミングを変更すべきかどうか判定するタイミング変更
判定手段と、前記タイミング変更判定手段でタイミング
を変更すべきであると判定した時前記ロック時間計測手
段で計測した時間に基づき前記間欠制御手段での間欠動
作タイミング時間の変更幅を制御するとともに前記間欠
動作タイミング時間の変更要求及び変更幅情報を変更前
の間欠動作タイミング時間で通信相手に伝送するタイミ
ング制御手段とを備えた自動検針システム。
4. A first wireless communication for transmitting and receiving a flow meter, storage means for electronically storing measurement data of the flow meter, measurement data from the storage means and a measurement data request signal to the storage means. A second wireless communication device for transmitting and receiving a device, data collection means for collecting measurement data of the flow meter, a measurement data request signal from the data collection means, and measurement data from the flow meter; The first wireless communication device or the second wireless communication device selects a transmission / reception unit for transmitting / receiving radio waves, an intermittent control unit for intermittently operating the transmission / reception unit at a certain time interval, and a transmission / reception channel of the transmission / reception unit. Signal generating means, phase locked loop means for controlling the oscillation frequency of the signal generating means, and until the oscillation frequency of the signal generating means reaches a predetermined frequency. Whether the lock time measuring means for measuring time, the carrier detecting means for detecting the carrier by the received signal from the transmitting / receiving means, and the intermittent operation timing of the intermittent controlling means should be changed depending on the number of carrier detections by the carrier detecting means When the timing change determining means determines the timing and the timing change determining means determines that the timing should be changed, the range of change in the intermittent operation timing time in the intermittent control means is determined based on the time measured by the lock time measuring means. An automatic meter reading system comprising: a timing control means for controlling and transmitting the change request of the intermittent operation timing time and the change width information to the communication partner at the intermittent operation timing time before the change.
【請求項5】流量計と、前記流量計での計測データを電
子的に記憶する記憶手段、前記記憶手段からの計測デー
タ及び前記記憶手段への計測データ要求信号を送受信す
る第一の無線通信装置と、前記流量計の計測データを収
集するデータ収集手段、前記データ収集手段からの計測
データ要求信号及び前記流量計からの計測データを送受
信する第二の無線通信装置とを具備し、前記第一の無線
通信装置あるいは第二の無線通信装置は、電波を送受信
する送受信手段と、前記送受信手段をある時間間隔で間
欠的に動作させる間欠制御手段と、前記送受信手段の送
受信チャンネルを選択するための信号発生手段と、前記
信号発生手段の発振周波数を制御するフェーズロックド
ループ手段と、前記信号発生手段の発振周波数が所定の
周波数になるまでの時間を計測するロック時間計測手段
と、前記送受信手段で間欠動作タイミング変更要求を受
信すると前記ロック時間計測手段で計測した時間に基づ
き前記間欠制御手段での間欠動作タイミング時間の変更
幅を制御するとともに前記間欠動作タイミング時間の変
更幅情報を変更前の間欠動作タイミング時間で通信相手
に伝送するタイミング制御手段とを備えた自動検針シス
テム。
5. A first wireless communication for transmitting and receiving a flow meter, storage means for electronically storing measurement data of the flow meter, measurement data from the storage means and a measurement data request signal to the storage means. A second wireless communication device for transmitting and receiving a device, data collection means for collecting measurement data of the flow meter, a measurement data request signal from the data collection means, and measurement data from the flow meter; The first wireless communication device or the second wireless communication device selects a transmission / reception unit for transmitting / receiving radio waves, an intermittent control unit for intermittently operating the transmission / reception unit at a certain time interval, and a transmission / reception channel of the transmission / reception unit. Signal generating means, phase locked loop means for controlling the oscillation frequency of the signal generating means, and until the oscillation frequency of the signal generating means reaches a predetermined frequency. When the lock time measuring means for measuring time and the intermittent operation timing change request by the transmitting / receiving means are received, the change range of the intermittent operation timing time in the intermittent control means is controlled based on the time measured by the lock time measuring means. An automatic meter-reading system comprising: a timing control means for transmitting the change width information of the intermittent operation timing time to a communication partner at the intermittent operation timing time before the change.
【請求項6】送受信手段は間欠動作タイミングの整数倍
の時間間隔で通信相手と間欠動作タイミングの同期を取
るための同期合わせ信号を送信するものであって、前記
同期合わせ信号を送信できない時あるいは同期合わせ信
号に対する応答信号を受信できなかった時には次の間欠
動作タイミングで同期合わせ信号を送信する請求項1ま
たは請求項2または請求項3または請求項4または請求
項5記載の自動検針システム。
6. The transmitting / receiving means transmits a synchronization signal for synchronizing the intermittent operation timing with a communication partner at a time interval which is an integral multiple of the intermittent operation timing, and when the synchronization signal cannot be transmitted, or 6. The automatic meter-reading system according to claim 1, wherein the synchronization signal is transmitted at the next intermittent operation timing when the response signal to the synchronization signal cannot be received.
【請求項7】送受信手段は間欠動作タイミングの整数倍
の時間間隔で通信相手と間欠動作タイミングの同期を取
るための同期合わせ信号を受信するものであって、前記
同期合わせ信号を受信できなかった時には次の間欠動作
タイミングで同期合わせ信号長より短い時間間隔で間欠
的に複数回同期合わせ信号の有無を確認する請求項1ま
たは請求項2または請求項3または請求項4または請求
項5記載の自動検針システム。
7. The transmitting / receiving means receives a synchronization signal for synchronizing the intermittent operation timing with a communication partner at a time interval which is an integral multiple of the intermittent operation timing, and cannot receive the synchronization signal. Sometimes, at the next intermittent operation timing, the presence or absence of the synchronization signal is intermittently confirmed a plurality of times at a time interval shorter than the synchronization signal length, according to claim 1 or claim 2 or claim 3 or claim 4 or claim 5. Automatic meter reading system.
JP10546895A 1995-04-28 1995-04-28 Automatic meter reading system Expired - Fee Related JP3380362B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10546895A JP3380362B2 (en) 1995-04-28 1995-04-28 Automatic meter reading system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10546895A JP3380362B2 (en) 1995-04-28 1995-04-28 Automatic meter reading system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP01094994A Division JP3381353B2 (en) 1994-02-02 1994-02-02 Wireless communication device

Publications (2)

Publication Number Publication Date
JPH07284170A true JPH07284170A (en) 1995-10-27
JP3380362B2 JP3380362B2 (en) 2003-02-24

Family

ID=14408423

Family Applications (1)

Application Number Title Priority Date Filing Date
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1032870A (en) * 1996-07-15 1998-02-03 Matsushita Electric Ind Co Ltd Radio system
JP2002150461A (en) * 2000-11-10 2002-05-24 Toyo Keiki Co Ltd Wireless device for automatic meter-reading system
JP2008177792A (en) * 2007-01-17 2008-07-31 Matsushita Electric Works Ltd Wireless transmission system
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1032870A (en) * 1996-07-15 1998-02-03 Matsushita Electric Ind Co Ltd Radio system
JP2002150461A (en) * 2000-11-10 2002-05-24 Toyo Keiki Co Ltd Wireless device for automatic meter-reading system
JP4673480B2 (en) * 2000-11-10 2011-04-20 東洋計器株式会社 Wireless device for automatic meter reading system
JP2008177792A (en) * 2007-01-17 2008-07-31 Matsushita Electric Works Ltd Wireless transmission system
JP4674587B2 (en) * 2007-01-17 2011-04-20 パナソニック電工株式会社 Wireless transmission system
WO2011007567A1 (en) 2009-07-15 2011-01-20 パナソニック株式会社 Radio communication device, radio communication system, radio communication method, and program for executing the radio communication method
CN109861498A (en) * 2019-02-18 2019-06-07 浙江工业大学 Step-down type dc converter sliding-mode control based on Unknown Input Observer
CN109861498B (en) * 2019-02-18 2020-06-16 浙江工业大学 Unknown input observer-based buck DC converter sliding mode control method

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