JP2014072872A - Automatic meter reading apparatus, gas meter, and gas automatic meter reading system - Google Patents

Automatic meter reading apparatus, gas meter, and gas automatic meter reading system Download PDF

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JP2014072872A
JP2014072872A JP2012220013A JP2012220013A JP2014072872A JP 2014072872 A JP2014072872 A JP 2014072872A JP 2012220013 A JP2012220013 A JP 2012220013A JP 2012220013 A JP2012220013 A JP 2012220013A JP 2014072872 A JP2014072872 A JP 2014072872A
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pass filter
communication connector
automatic meter
communication
meter reading
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JP5948585B2 (en
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Satoshi Hasako
里志 羽迫
Kenzo Tomitani
謙三 冨谷
Hirosumi Nakamura
廣純 中村
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Panasonic Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an automatic meter reading apparatus capable of supplying power via a communication connector without using any power connector, thereby charging a battery of a meter while reducing the cost for the automatic meter reading apparatus.SOLUTION: An automatic meter reading apparatus 101 includes: a microcomputer 105 that performs DC free encoding and decoding; a high-pass filter 108 that allows communication signals after the DC free encoding and shuts off voltage variation generated due to a variation of light receiving amount on a solar cell panel 102; a low-pass filter 111 for removing noise; a power supply controller 110 that charges a secondary battery 109; a negative electrode 113 and a positive electrode 114 of a first communication connector; and a negative electrode 115 and a positive electrode 116 of a second communication connector. The first communication connector is connected to a meter 103 and the second communication connector is connected to the solar cell panel. Thus, no power connector needs to be provided anew where a battery of the meter is charged by supplying power to the meter via the automatic meter reading apparatus.

Description

本発明は、ガスメーターまたはセンターへの伝送装置との有線通信を行うコネクタに、太陽電池パネルなどの外部電源を接続して、給電することのできる自動検針装置に関するものである。   The present invention relates to an automatic meter reading device capable of supplying power by connecting an external power source such as a solar battery panel to a connector that performs wired communication with a gas meter or a transmission device to a center.

近年、ガスメーターの自動検針を行うためのシステムとして、各世帯のガスメーターに中継機能を持つ自動検針装置を有線で接続し、集合住宅全体をメッシュネットワークで結ぶ構成が提案されている。また、検針情報をセンターへ通知するだけでなく、顧客宅内の情報端末等に表示し、ガス使用量を見える化するサービスへの要望が高まっている。
最近、自動検針のネットワーク形態として、各世帯の検針情報は、隣家から隣家へと中継されて特定の自動検針装置に集められ、広域無線ネットワークや、公衆回線などを通じてセンターへ伝達される方式が注目されている。自動検針装置が、メーターと、センターへの伝達装置のそれぞれに接続するためには、２対の有線端子が必要となる。しかし、通常は、センターへの伝達装置に接続されている自動検針装置は、ネットワークの中の１台だけで、その他の自動検針装置はメーターだけに接続され、残りの１対の通信コネクタが活用されないことになる。この空きコネクタを有効活用する可能性として、太陽電池パネルを接続し、自動検針装置もしくはメーターを駆動する電力を補給することが考えられる。図３に三世帯からなる自動検針のシステム構成を示す。第１のメーター３０１、第２のメーター３０２、第３のメーター３０３と、第１の自動検針装置３０４、第２の自動検針装置３０５、第３の自動検針装置３０６と、第１の太陽電池パネル３０７、第２の太陽電池パネル３０８、第３の太陽電池パネル３０９と、センターへの接続手段３１０から構成されている。太陽電池パネルを使用しないシステムでは、第１の自動検針装置３０４、第２の自動検針装置３０５、およびセンターへの接続手段の通信コネクタの１つが空きコネクタとなり活用されないが、図３のように太陽電池パネルを取り付けることで、通信コネクタを有効活用できるだけでなく、太陽光エネルギーの常時補給により、検針頻度の増加要求に対応したシステムが構築可能となる。
通常、ガスメーターが設置される場所において、商用電源から給電できるケースは少ない。現在、自動検針装置の電源方式としては、リチウム１次電池を搭載し、自動検針装置の商品寿命まで電池の交換なしで駆動する方法が主流である。従来の一ヶ月に数回程度の自動検針であればこの方法で十分であるが、ガス使用量の見える化のニーズが高まり、検針の頻度を飛躍的に高めたい場合、電池の必要本数が増大し自動検針装置の大型化およびコストアップにつながるという問題がある。
このような問題に対しては、二次電池や、電気二重層コンデンサ等の大容量コンデンサを内部に搭載し、太陽電池パネルなどの外部電源から充電することで、消費電流の増大に対応する方法が一般的に知られている（例えば特許文献１）。 In recent years, as a system for performing automatic meter reading of a gas meter, a configuration has been proposed in which an automatic meter reading device having a relay function is connected to a gas meter of each household by a wire and the entire apartment house is connected by a mesh network. In addition to notifying meter reading information to the center, there is an increasing demand for a service for displaying gas usage by displaying information on an information terminal in a customer's home.
Recently, as a network form of automatic meter reading, the meter reading information of each household is relayed from neighbor to neighbor and collected in a specific automatic meter reading device, and transmitted to the center through wide area wireless network or public line etc. Has been. In order for the automatic meter reading device to connect to each of the meter and the transmission device to the center, two pairs of wired terminals are required. However, there is usually only one automatic meter reading device in the network connected to the transmission device to the center, the other automatic meter reading device is connected only to the meter, and the remaining pair of communication connectors are utilized. Will not be. As a possibility of effectively using this empty connector, it is conceivable to connect a solar cell panel and supply electric power for driving an automatic meter reading device or a meter. Fig. 3 shows the system configuration of automatic meter reading consisting of three households. 1st meter 301, 2nd meter 302, 3rd meter 303, 1st automatic meter-reading apparatus 304, 2nd automatic meter-reading apparatus 305, 3rd automatic meter-reading apparatus 306, and 1st solar cell panel 307, the 2nd solar cell panel 308, the 3rd solar cell panel 309, and the connection means 310 to a center. In a system that does not use a solar cell panel, one of the first automatic meter-reading device 304, the second automatic meter-reading device 305, and the communication connector of the connection means to the center becomes an empty connector and is not utilized, but as shown in FIG. By attaching the battery panel, not only can the communication connector be used effectively, but it is possible to construct a system that responds to the demand for increased meter reading frequency by constantly supplying solar energy.
Usually, there are few cases where power can be supplied from a commercial power source in a place where a gas meter is installed. At present, as a power supply method for an automatic meter reading device, a method in which a lithium primary battery is mounted and driven without changing the battery until the product life of the automatic meter reading device is mainstream. This method is sufficient for conventional automatic meter reading several times a month. However, if the need for visualization of gas usage increases and the frequency of meter reading increases dramatically, the required number of batteries increases. However, there is a problem that the automatic meter reading device is increased in size and cost.
For such a problem, a method of dealing with an increase in current consumption by mounting a large capacity capacitor such as a secondary battery or an electric double layer capacitor inside and charging it from an external power source such as a solar cell panel Is generally known (for example, Patent Document 1).

図４は、特許文献１に記載された従来の自動検針装置を示すものである。図４に示すように、自動検針装置４０１は、アンテナ４０４、自動検針装置本体４０５、ソーラー電源装置４０６、電源コネクタ４０７、通信用コネクタ４０８から構成され、メーター４０２と、太陽電池パネル４０３に接続されている。   FIG. 4 shows a conventional automatic meter reading device described in Patent Document 1. As shown in FIG. As shown in FIG. 4, the automatic meter reading device 401 includes an antenna 404, an automatic meter reading device main body 405, a solar power supply device 406, a power connector 407, and a communication connector 408, and is connected to a meter 402 and a solar cell panel 403. ing.

特開２０１２−２３６５６号公報JP 2012-23656 A

しかし、図４に示す従来の構成では、太陽電池パネル等の外部電源を無線機の電源部に接続するため、４０７のような給電専用のコネクタを別に設ける必要があった。また、検針頻度の増大により、メーターの消費電力が増えた分の電池消耗を補う必要が生じるという課題があった。本発明は、自動検針装置に元々備わっているセンターへの伝達装置に接続するための有線通信用の端子を通じて、外部電源から給電することで、電源コネクタを新たに設ける必要をなくすと同時に、外部電源からメーターに給電する手段を提供し、メーターの電池消耗を補うためになされたものである。   However, in the conventional configuration shown in FIG. 4, in order to connect an external power source such as a solar cell panel to the power source unit of the wireless device, it is necessary to provide a dedicated connector for power feeding such as 407. Further, there has been a problem that it is necessary to compensate for battery consumption as the power consumption of the meter increases due to an increase in meter reading frequency. The present invention eliminates the need to newly provide a power connector by supplying power from an external power source through a terminal for wired communication for connecting to a transmission device to the center that is originally provided in the automatic meter-reading device, and at the same time It is a means for supplying power from the power source to the meter to compensate for battery consumption of the meter.

給電用の端子と通信用の端子を共用した場合、ＤＣ電源電圧と通信信号が重ね合わされるため、自動検針装置内部においては、ＤＣ電源電圧は電源制御装置へ、通信信号は通信バッファを介してマイコンへ、それぞれ劣化することなく伝わる機構が必要となる。そのために、送受信バッファと端子の間にハイパスフィルタを設け、マイコンが外部との通信を行う際には、ＤＣフリー符号で符号化・復号化する。ハイパスフィルタのカットオフ周波数は、符号レートから定まる周波数成分を劣化なく通過させ、かつ太陽電池パネルの受光量の変化から生じる電圧変動を通過させないように設計される。また、電源制御装置と端子の間にはローパスフィルタを設ける。ローパスフィルタのカットオフ周波数は、端子から入力されるＤＣ電源電圧を通過させ、かつ通信信号は通過させないよう設計される。以上のように構成することで、ＤＣ電源電圧は電源制御装置へ、通信信号は通信バッファを介してマイコンへ、それぞれ劣化することなく伝達される。電源制御装置は太陽電池パネルから供給されるＤＣ電源電圧によって、二次電池を充電する。   When the power supply terminal and the communication terminal are shared, the DC power supply voltage and the communication signal are superimposed. Therefore, in the automatic meter reading device, the DC power supply voltage is sent to the power supply control device, and the communication signal is sent via the communication buffer. A mechanism that can be transmitted to the microcomputer without any deterioration is required. Therefore, a high-pass filter is provided between the transmission / reception buffer and the terminal, and when the microcomputer communicates with the outside, encoding and decoding are performed with a DC-free code. The cut-off frequency of the high-pass filter is designed so as to pass a frequency component determined from the code rate without deterioration and not to pass a voltage fluctuation resulting from a change in the amount of light received by the solar cell panel. A low-pass filter is provided between the power supply control device and the terminal. The cut-off frequency of the low-pass filter is designed to pass the DC power supply voltage input from the terminal and not to pass the communication signal. With the above configuration, the DC power supply voltage is transmitted to the power supply control device, and the communication signal is transmitted to the microcomputer via the communication buffer without deterioration. The power supply control device charges the secondary battery with a DC power supply voltage supplied from the solar battery panel.

さらに、上記の自動検針装置と同様の構成をメーター内部に設けることで、メーターの端子に太陽電池パネルが接続された場合に、メーター内部の二次電池が充電されるようにする。しかし、メーターは自動検針装置に比べて普及数が多いため、自動検針装置に通信用コネクタを２対設け、メーターには通信用コネクタを１対のみ設けるほうが、その逆の場合よりもコスト的に有利である。ここで、自動検針装置に設けた２対の有線端子のうち、一方はメーターに接続され、他方は太陽電池パネルに接続される。その２対の有線端子は自動検針装置内部で、電気的に直結される。以上のように構成することで、太陽電池パネルが直接メーターに接続されなくても、自動検針装置を経由して給電されることになるので、メーター内部の二次電池は問題なく充電される。   Furthermore, by providing the same configuration as the above automatic meter-reading apparatus inside the meter, the secondary battery inside the meter is charged when the solar cell panel is connected to the terminal of the meter. However, since meters are more popular than automatic meter reading devices, it is more cost-effective to provide two pairs of communication connectors on the automatic meter reading device and only one pair of communication connectors on the meter than vice versa. It is advantageous. Here, one of the two pairs of wired terminals provided in the automatic meter reading device is connected to the meter, and the other is connected to the solar cell panel. The two pairs of wired terminals are electrically connected directly inside the automatic meter reading device. By configuring as described above, even if the solar cell panel is not directly connected to the meter, power is supplied via the automatic meter-reading device, so the secondary battery inside the meter is charged without any problem.

以上より明らかなように、本発明によれば、多くの自動検針装置で使われないままになる通信用コネクタを有効活用することで、太陽電池パネルを接続するための電源コネクタを新たに設ける必要がなくなるので、その分、自動検針装置のコストダウンを計ることができる。また、通信用コネクタを１対だけ有するガスメーターにおいても、太陽電池パネルから自動検針装置を経由してメーターに給電されることで、検針頻度の増加に伴って生じるメーターの電池消耗を補うことができる。   As is clear from the above, according to the present invention, it is necessary to newly provide a power connector for connecting a solar cell panel by effectively using a communication connector that remains unused in many automatic meter reading devices. Therefore, the cost of the automatic meter reading device can be reduced accordingly. In addition, even in a gas meter having only one pair of communication connectors, power consumption from the solar battery panel to the meter via the automatic meter-reading device can compensate for battery consumption of the meter that occurs as the meter-reading frequency increases. .

本発明の実施の形態１にかかるガス自動検針システムの構成図1 is a configuration diagram of a gas automatic meter reading system according to a first embodiment of the present invention. 本発明の実施の形態２にかかるガス自動検針システムの構成図Configuration diagram of automatic gas meter reading system according to Embodiment 2 of the present invention 従来の自動検針システムの構成図Configuration diagram of conventional automatic meter reading system 従来の自動検針装置の構成を表す図The figure showing the composition of the conventional automatic meter-reading device

第１の発明は、無線通信を行うためのアンテナと、デジタルデータ送受信を行うためにＤＣフリー符号化・復号化を行うマイコンと、マイコンから出力される符号化されたデー
タを送信する送信バッファと、受信された信号をマイコンへ入力する受信バッファと、送信信号および受信信号を通過させ、かつ太陽電池パネルにおける受光量の変化から生じる電圧変動を遮断するハイパスフィルタと、ＤＣ電源電圧を通過させ、かつ通信信号を遮断するローパスフィルタと、ローパスフィルタから入力される通信信号が取り除かれたＤＣ電源電圧をもとに、二次電池を充電する電源制御装置と、正極と負極を備える第一の通信用コネクタと、正極と負極を備え第一の通信用コネクタの正極および負極とそれぞれ接続された第二の通信用コネクタと、グランドを備え、グランドは第一の通信用コネクタの負極と、第二の通信用コネクタの負極に接続され、ハイパスフィルタと、ローパスフィルタは第一の通信用コネクタと、第二の通信用コネクタの正極に接続されることにより、太陽電池パネルを接続するための電源コネクタを新たに設ける必要がなくなるので、その分、自動検針装置のコストダウンを計ることができる。
第２の発明は、特に第１の発明のハイパスフィルタを直列のコンデンサ１個という簡易な構成にしたことにより、ハイパスフィルタ回路を低コストで実現できる。 A first invention includes an antenna for performing wireless communication, a microcomputer that performs DC-free encoding / decoding to perform digital data transmission and reception, and a transmission buffer that transmits encoded data output from the microcomputer A reception buffer that inputs the received signal to the microcomputer, a high-pass filter that passes the transmission signal and the reception signal, and that blocks voltage fluctuations caused by changes in the amount of received light in the solar cell panel, and a DC power supply voltage, And a low-pass filter that cuts off the communication signal, a power supply control device that charges the secondary battery based on the DC power supply voltage from which the communication signal input from the low-pass filter is removed, and a first communication that includes a positive electrode and a negative electrode And a second communication connector provided with a positive electrode and a negative electrode, and connected to a positive electrode and a negative electrode of the first communication connector, respectively. A ground is connected to the negative electrode of the first communication connector and the negative electrode of the second communication connector; the high-pass filter and the low-pass filter are the first communication connector and the second communication connector; By connecting to the positive electrode, there is no need to newly provide a power connector for connecting the solar cell panel, and accordingly, the cost of the automatic meter reading device can be reduced.
In the second aspect of the invention, the high-pass filter circuit can be realized at a low cost because the high-pass filter of the first aspect of the invention has a simple configuration of one capacitor in series.

第３の発明は、特に第１の発明のマイコンがデジタルデータ送受信を行う際のＤＣフリー符号を、簡易なマンチェスタ符号とすることにより、少ない演算量で実現できる。   The third aspect of the invention can be realized with a small amount of calculation by using a simple Manchester code as the DC-free code when the microcomputer of the first aspect of the invention performs digital data transmission / reception.

第４の発明は、デジタルデータ送受信を行うためにＤＣフリー符号化・復号化を行うマイコンと、マイコンから出力される符号化されたデータを送信する送信バッファと、受信された信号をマイコンへ入力する受信バッファと、送信信号および受信信号を通過させ、かつ太陽電池パネルにおける受光量の変化から生じる電圧変動を遮断するハイパスフィルタと、ＤＣ電源電圧を通過させ、かつ通信信号を遮断するローパスフィルタと、ローパスフィルタから入力される通信信号が取り除かれたＤＣ電源電圧をもとに、二次電池を充電する電源制御装置と、正極と負極を備える通信用コネクタと、グランドを備え、グランドは通信用コネクタの負極に接続され、ハイパスフィルタと、ローパスフィルタは通信用コネクタの正極に接続されることにより、太陽電池パネルを接続するための電源コネクタを新たに設ける必要がなくなるので、その分、ガスメーターのコストダウンを計ることができる。   A fourth invention is a microcomputer that performs DC-free encoding / decoding to perform digital data transmission / reception, a transmission buffer that transmits encoded data output from the microcomputer, and a received signal input to the microcomputer A reception buffer, a high-pass filter that allows transmission signals and reception signals to pass through, and blocks voltage fluctuations caused by changes in the amount of received light in the solar cell panel; and a low-pass filter that passes DC power supply voltage and blocks communication signals A power supply control device for charging the secondary battery based on the DC power supply voltage from which the communication signal input from the low-pass filter is removed, a communication connector having a positive electrode and a negative electrode, and a ground. The high-pass filter and low-pass filter are connected to the positive electrode of the connector for communication. More, since new is not necessary to provide a power connector for connecting a solar cell panel, correspondingly, it is possible to measure the cost of the gas meter.

第５の発明は、特に第４の発明のハイパスフィルタを直列のコンデンサ１個という簡易な構成にしたことにより、ハイパスフィルタ回路を低コストで実現できる。   In the fifth aspect of the invention, the high-pass filter circuit can be realized at a low cost, particularly by adopting a simple configuration in which the high-pass filter of the fourth aspect of the invention is a single capacitor in series.

第６の発明は、特に第４の発明のマイコンがデジタルデータ送受信を行う際のＤＣフリー符号を、簡易なマンチェスタ符号とすることにより、少ない演算量で実現できる。   The sixth aspect of the invention can be realized with a small amount of calculation by using a simple Manchester code as the DC-free code when the microcomputer of the fourth aspect of the invention performs digital data transmission / reception.

第７の発明は、第１の発明の自動検針装置と、第２の発明のガスメーターと、太陽電池パネルからなり、自動検針装置の第一の通信用コネクタはガスメータの通信用コネクタと接続され、自動検針装置の第二の通信用コネクタは太陽電池パネルに接続されることにより、通信用コネクタを１対だけ有するガスメーターにおいても、太陽電池パネルから自動検針装置を経由してメーターに給電されることで、検針頻度の増加に伴って生じるメーターの電池消耗を補うことができる。   7th invention consists of the automatic meter-reading apparatus of 1st invention, the gas meter of 2nd invention, and a solar cell panel, The 1st communication connector of an automatic meter-reading apparatus is connected with the communication connector of a gas meter, By connecting the second communication connector of the automatic meter-reading device to the solar cell panel, even in a gas meter having only one pair of communication connectors, power is supplied to the meter from the solar cell panel via the automatic meter-reading device. Thus, it is possible to compensate for the battery consumption of the meter that occurs as the meter reading frequency increases.

以下、本発明の実施例について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の第一の実施の形態におけるガス自動検針システムの図を示すものであり、第７の発明の構成を表している。また、図１では、自動検針装置１０１の内部構成も同時に示すことで、第１の発明の内容を詳細に表している。以下、実施の形態１について図１を参照しながら説明する。自動検針装置１０１は、無線通信を行うためのアンテナ１
０４と、デジタルデータ送受信を行うためにＤＣフリー符号化・復号化を行うマイコン１０５と、マイコン１０５から出力される符号化されたデータを送信する送信バッファ１０７と、受信された信号をマイコン１０５へ入力する受信バッファ１０６と、送信信号および受信信号を通過させ、かつ太陽電池パネル１０２における受光量の変化から生じる電圧変動を遮断するハイパスフィルタ１０８と、ＤＣ電源電圧を通過させ、かつ通信信号を遮断するローパスフィルタ１１１と、通信信号が取り除かれたＤＣ電源電圧をもとに、二次電池１０９を充電する電源制御装置１１０と、正極１１４と負極１１３を備える第一の通信用コネクタと、正極１１６と負極１１５を備える第二の通信用コネクタと、グランド１１２を備えている。そして、グランド１１２は第一の通信用コネクタの負極１１３と、第二の通信用コネクタの負極１１５に接続され、ハイパスフィルタと、ローパスフィルタは第一の通信用コネクタの正極１１４と、第二の通信用コネクタの正極１１６に接続されることにより、太陽電池パネル１０２を接続するための電源コネクタを新たに設ける必要がなくなるので、その分、自動検針装置１０１のコストダウンを計ることができる。 (Embodiment 1)
FIG. 1 is a diagram showing a gas automatic meter reading system according to the first embodiment of the present invention, and shows the configuration of the seventh aspect of the present invention. Further, in FIG. 1, the contents of the first invention are shown in detail by simultaneously showing the internal configuration of the automatic meter reading device 101. The first embodiment will be described below with reference to FIG. The automatic meter reading device 101 includes an antenna 1 for performing wireless communication.
04, a microcomputer 105 that performs DC-free encoding / decoding to perform digital data transmission / reception, a transmission buffer 107 that transmits encoded data output from the microcomputer 105, and a received signal to the microcomputer 105 An input reception buffer 106, a high-pass filter 108 that allows transmission signals and reception signals to pass through, and blocks voltage fluctuations resulting from changes in the amount of light received by the solar panel 102, and a DC power supply voltage that passes through and blocks communication signals. A low-pass filter 111 that performs power supply, a power supply control device 110 that charges the secondary battery 109 based on the DC power supply voltage from which the communication signal is removed, a first communication connector that includes a positive electrode 114 and a negative electrode 113, and a positive electrode 116. And a second communication connector including a negative electrode 115 and a ground 112. The ground 112 is connected to the negative electrode 113 of the first communication connector and the negative electrode 115 of the second communication connector. The high-pass filter and the low-pass filter are the positive electrode 114 of the first communication connector and the second By connecting to the positive electrode 116 of the communication connector, there is no need to newly provide a power connector for connecting the solar battery panel 102, so that the cost of the automatic meter reading device 101 can be reduced accordingly.

メーター１０３は、第４の発明によるガスメーターを示しているが、その内部構成については、実施の形態２で詳細を述べる。自動検針装置１０１の第一の通信用コネクタの負極１１３および正極１１４はメーター１０３と接続され、第二の通信用コネクタの負極１１５および正極１１６は太陽電池パネル１０２と接続されている。
以上のように構成することにより、通信用コネクタを１対だけ有するガスメーターにおいても、太陽電池パネルから自動検針装置を経由してメーターに給電されることで、検針頻度の増加に伴って生じるメーターの電池消耗を補うことができる。 The meter 103 is a gas meter according to the fourth aspect of the invention, and the internal configuration will be described in detail in the second embodiment. The negative electrode 113 and the positive electrode 114 of the first communication connector of the automatic meter-reading apparatus 101 are connected to the meter 103, and the negative electrode 115 and the positive electrode 116 of the second communication connector are connected to the solar cell panel 102.
By configuring as described above, even in a gas meter having only one pair of communication connectors, power is supplied from the solar cell panel to the meter via the automatic meter-reading device. Battery consumption can be compensated.

また、特にハイパスフィルタ１０８を直列のコンデンサ１個という簡易な構成としてもよい。その場合、ハイパスフィルタ回路を低コストで実現できる。さらにまた、特にマイコンがデジタルデータ送受信を行う際のＤＣフリー符号を、簡易なマンチェスタ符号としてもよい。その場合、少ない演算量で実現できる。   In particular, the high-pass filter 108 may have a simple configuration with a single capacitor in series. In that case, a high-pass filter circuit can be realized at low cost. Furthermore, a DC-free code when the microcomputer performs digital data transmission / reception may be a simple Manchester code. In this case, it can be realized with a small amount of calculation.

（実施の形態２）
図２は、本発明の第二の実施の形態におけるガス自動検針システムの図を示すものであり、第７の発明の構成を表している。図２では、メーター２０１の内部構成も同時に示すことで、第４の発明の内容を詳細に表している。以下、実施の形態２について図２を参照しながら説明する。メーター２０１は、デジタルデータ送受信を行うためにＤＣフリー符号化・復号化を行うマイコン２０４と、マイコン２０４から出力される符号化されたデータを送信する送信バッファ２０６と、受信された信号をマイコン２０４へ入力する受信バッファ２０５と、送信信号および受信信号を通過させ、かつ太陽電池パネル２０２における受光量の変化から生じる電圧変動を遮断するハイパスフィルタ２０７と、ＤＣ電源電圧を通過させ、かつ通信信号を遮断するローパスフィルタ２１０と、通信信号が取り除かれたＤＣ電源電圧をもとに、二次電池２０８を充電する電源制御装置２０９と、正極２１３と負極２１２を備える通信用コネクタと、グランド２１１を備えている。そして、グランド２１１は通信用コネクタの負極２１２に接続され、ハイパスフィルタと、ローパスフィルタは通信用コネクタの正極２１３に接続されることにより、太陽電池パネル１０２を接続するための電源コネクタを新たに設ける必要がなくなるので、その分、メーター２０１のコストダウンを計ることができる。 (Embodiment 2)
FIG. 2 is a diagram showing a gas automatic meter reading system according to the second embodiment of the present invention, and shows the configuration of the seventh aspect of the present invention. In FIG. 2, the contents of the fourth invention are shown in detail by simultaneously showing the internal configuration of the meter 201. The second embodiment will be described below with reference to FIG. The meter 201 includes a microcomputer 204 that performs DC-free encoding / decoding to perform digital data transmission / reception, a transmission buffer 206 that transmits encoded data output from the microcomputer 204, and a received signal from the microcomputer 204. A reception buffer 205 that is input to the high-pass filter 207 that allows transmission signals and reception signals to pass through and blocks voltage fluctuations caused by changes in the amount of received light in the solar battery panel 202; and passes a DC power supply voltage and transmits communication signals. A low-pass filter 210 that cuts off, a power supply control device 209 that charges the secondary battery 208 based on the DC power supply voltage from which the communication signal has been removed, a communication connector that includes a positive electrode 213 and a negative electrode 212, and a ground 211 are provided. ing. The ground 211 is connected to the negative electrode 212 of the communication connector, and the high-pass filter and the low-pass filter are connected to the positive electrode 213 of the communication connector, thereby newly providing a power connector for connecting the solar cell panel 102. Since it is not necessary, the cost of the meter 201 can be reduced accordingly.

自動検針装置２０３は、第１の発明による自動検針装置を示しているが、その内部構成については、すでに実施の形態１で詳細を述べた。メーター２０１の通信用コネクタの負極２１２および正極２１３は自動検針装置２０３と接続されることで、自動検針装置を経由して太陽電池パネル２０２とも接続されている。   The automatic meter reading device 203 shows the automatic meter reading device according to the first invention, and the internal configuration has already been described in detail in the first embodiment. The negative electrode 212 and the positive electrode 213 of the communication connector of the meter 201 are connected to the solar cell panel 202 via the automatic meter reading device by being connected to the automatic meter reading device 203.

以上のように構成することにより、通信用コネクタを１対だけ有するガスメーターにお
いても、太陽電池パネルから自動検針装置を経由してメーターに給電されることで、検針頻度の増加に伴って生じるメーターの電池消耗を補うことができる。 By configuring as described above, even in a gas meter having only one pair of communication connectors, power is supplied from the solar cell panel to the meter via the automatic meter-reading device. Battery consumption can be compensated.

また、特にハイパスフィルタ２０７を直列のコンデンサ１個という簡易な構成としてもよい。その場合、ハイパスフィルタ回路を低コストで実現できる。さらにまた、特にマイコンがデジタルデータ送受信を行う際のＤＣフリー符号を、簡易なマンチェスタ符号としてもよい。その場合、少ない演算量で実現できる。   In particular, the high-pass filter 207 may have a simple configuration with one serial capacitor. In that case, a high-pass filter circuit can be realized at low cost. Furthermore, a DC-free code when the microcomputer performs digital data transmission / reception may be a simple Manchester code. In this case, it can be realized with a small amount of calculation.

以上のように、本発明にかかる自動検針装置、ガスメーター、およびガス自動検針システムは、ガスメーターを水道メーターに置き換えることにより、水道自動検針システムにも適用することができる。   As described above, the automatic meter reading device, the gas meter, and the gas automatic meter reading system according to the present invention can be applied to a water meter automatic meter reading system by replacing the gas meter with a water meter.

１０１、２０３、４０１ 自動検針装置
１０２、２０２、４０３ 太陽電池パネル
１０３、２０１、４０２ メーター
１０４、４０４ アンテナ
１０５、２０４ マイコン
１０６、２０５ 受信バッファ
１０７、２０６ 送信バッファ
１０８、２０７ ハイパスフィルタ
１０９、２０８ 二次電池
１１０、２０９ 電源制御装置
１１１、２１０ ローパスフィルタ
１１２、２１１ グランド
１１３、２１２、１１５ 負極
１１４、２１３、１１６ 正極
３０１ 第１のメーター
３０２ 第２のメーター
３０３ 第３のメーター
３０４ 第１の自動検針装置
３０５ 第２の自動検針装置
３０６ 第３の自動検針装置
３０７ 第１の太陽電池パネル
３０８ 第２の太陽電池パネル
３０９ 第３の太陽電池パネル
３１０ センターへの接続手段
４０５ 自動検針装置本体
４０６ ソーラー電源装置
４０７ 電源コネクタ
４０８ 通信用コネクタ
101, 203, 401 Automatic meter reading device 102, 202, 403 Solar panel 103, 201, 402 Meter 104, 404 Antenna 105, 204 Microcomputer 106, 205 Reception buffer 107, 206 Transmission buffer 108, 207 High-pass filter 109, 208 Secondary Battery 110, 209 Power control device 111, 210 Low-pass filter 112, 211 Ground 113, 212, 115 Negative electrode 114, 213, 116 Positive electrode 301 First meter 302 Second meter 303 Third meter 304 First automatic meter reading device 305 2nd automatic meter-reading device 306 3rd automatic meter-reading device 307 1st solar cell panel 308 2nd solar cell panel 309 3rd solar cell panel 310 Connection means to center 405 Automatic meter-reading device book Body 406 Solar power supply 407 Power connector 408 Communication connector

Claims (7)

無線通信を行うためのアンテナと、デジタルデータ送受信を行うためにＤＣフリー符号化・復号化を行うマイコンと、マイコンから出力される符号化されたデータを送信する送信バッファと、受信された信号をマイコンへ入力する受信バッファと、送信信号および受信信号を通過させ、かつ太陽電池パネルにおける受光量の変化から生じる電圧変動を遮断するハイパスフィルタと、ＤＣ電源電圧を通過させ、かつ通信信号を遮断するローパスフィルタと、通信信号が取り除かれたＤＣ電源電圧をもとに、二次電池を充電する電源制御装置と、正極と負極を備える第一の通信用コネクタと、正極と負極を備え第一の通信用コネクタの正極および負極とそれぞれ接続された第二の通信用コネクタと、グランドを備え、
グランドは第一の通信用コネクタの負極と、第二の通信用コネクタの負極に接続され、
ハイパスフィルタと、ローパスフィルタは第一の通信用コネクタと、第二の通信用コネクタの正極に接続されたことを特徴とする自動検針装置。 An antenna for performing wireless communication, a microcomputer that performs DC-free encoding / decoding to perform digital data transmission / reception, a transmission buffer that transmits encoded data output from the microcomputer, and a received signal A reception buffer that is input to the microcomputer, a high-pass filter that allows transmission signals and reception signals to pass through, and that blocks voltage fluctuations caused by changes in the amount of received light in the solar cell panel, and a DC power supply voltage that passes through and blocks communication signals. Based on the low-pass filter, the DC power supply voltage from which the communication signal is removed, the power supply control device that charges the secondary battery, the first communication connector that includes the positive electrode and the negative electrode, and the first that includes the positive electrode and the negative electrode A second communication connector connected to the positive electrode and the negative electrode of the communication connector, respectively, and a ground,
The ground is connected to the negative electrode of the first communication connector and the negative electrode of the second communication connector,
An automatic meter reading device, wherein the high-pass filter and the low-pass filter are connected to the first communication connector and the positive electrode of the second communication connector. ハイパスフィルタを直列のコンデンサ１個で構成した請求項１記載の自動検針装置。   The automatic meter-reading apparatus according to claim 1, wherein the high-pass filter is composed of a single capacitor in series. マイコンがデジタルデータ送受信を行う際のＤＣフリー符号がマンチェスタ符号である請求項１記載の自動検針装置。   The automatic meter reading device according to claim 1, wherein the DC-free code when the microcomputer performs digital data transmission / reception is a Manchester code. デジタルデータ送受信を行うためにＤＣフリー符号化・復号化を行うマイコンと、マイコンから出力される符号化されたデータを送信する送信バッファと、受信された信号をマイコンへ入力する受信バッファと、送信信号および受信信号を通過させ、かつ太陽電池パネルにおける受光量の変化から生じる電圧変動を遮断するハイパスフィルタと、ＤＣ電源電圧を通過させ、かつ通信信号を遮断するローパスフィルタと、通信信号が取り除かれたＤＣ電源電圧をもとに、二次電池を充電する電源制御装置と、正極と負極を備える通信用コネクタと、グランドを備え、
グランドは通信用コネクタの負極に接続され、
ハイパスフィルタと、ローパスフィルタは通信用コネクタの正極に接続されたことを特徴とするガスメーター。 A microcomputer that performs DC-free encoding / decoding to perform digital data transmission / reception, a transmission buffer that transmits encoded data output from the microcomputer, a reception buffer that inputs received signals to the microcomputer, and transmission The high-pass filter that passes the signal and the received signal and blocks the voltage fluctuation caused by the change in the amount of received light in the solar cell panel, the low-pass filter that passes the DC power supply voltage and blocks the communication signal, and the communication signal are removed. A power control device for charging the secondary battery based on the DC power supply voltage, a communication connector having a positive electrode and a negative electrode, and a ground.
The ground is connected to the negative electrode of the communication connector,
A gas meter, wherein the high-pass filter and the low-pass filter are connected to a positive electrode of a communication connector. ハイパスフィルタを直列のコンデンサ１個で構成した請求項４記載のガスメーター。   The gas meter according to claim 4, wherein the high pass filter is constituted by a single capacitor in series. マイコンがデジタルデータ送受信を行う際のＤＣフリー符号がマンチェスタ符号である請求項４記載のガスメーター。   The gas meter according to claim 4, wherein the DC-free code when the microcomputer performs digital data transmission / reception is a Manchester code. 請求項１記載の自動検針装置と、請求項２記載のガスメーターと、太陽電池パネルからなり、自動検針装置の第一の通信用コネクタはガスメータの通信用コネクタと接続され、自動検針装置の第二の通信用コネクタは太陽電池パネルに接続されたことを特徴とするガス自動検針システム。
The automatic meter reading device according to claim 1, the gas meter according to claim 2, and a solar battery panel, wherein the first communication connector of the automatic meter reading device is connected to the communication connector of the gas meter, and the second of the automatic meter reading device. A gas automatic meter reading system characterized in that the communication connector is connected to a solar cell panel.
JP2012220013A 2012-10-02 2012-10-02 Automatic meter reading device, gas meter, and gas automatic meter reading system Expired - Fee Related JP5948585B2 (en)

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