JP2007096667A - Remote surveillance apparatus - Google Patents

Remote surveillance apparatus Download PDF

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JP2007096667A
JP2007096667A JP2005282387A JP2005282387A JP2007096667A JP 2007096667 A JP2007096667 A JP 2007096667A JP 2005282387 A JP2005282387 A JP 2005282387A JP 2005282387 A JP2005282387 A JP 2005282387A JP 2007096667 A JP2007096667 A JP 2007096667A
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call
reception
period
time
slave unit
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JP4522934B2 (en
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Shuichi Takigawa
修一 瀧川
Shinzo Takechi
伸三 武智
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Ja Lp Gas Joho Center kk
Saxa Inc
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Ja Lp Gas Joho Center kk
Saxa Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a remote surveillance apparatus which suppresses useless consumption power produced during a continuous ringing signal is transmitted from a master unit, and at the same time, stably perform receiving operation without receiving effect of noise such as fading, etc. <P>SOLUTION: A communication control method of the remote surveillance apparatus transmits the predetermined ringing signal from the master unit to slave units to which a receiving rising period is established in a predetermined intermittent period in a receiving waiting state. The master unit side transmits a count value of the ringing signal until end of ringing together with the ringing signal to the slave units side. If the slave unit receives the ringing signal in the receiving rising period (S102); the received count value is acquired (S104), and a time S is calculated until end of the ringing (S105) to return to the receiving waiting state. After the time S progresses, the slave unit establishes to be receivable, and performs communication processing with the master unit. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、例えば、ガスや水道メータの自動検針、或いは火災や異常を監視する遠隔監視装置に関する。   The present invention relates to an automatic meter reading of a gas or water meter, or a remote monitoring device that monitors a fire or abnormality, for example.

こうした遠隔監視装置では、ガスや水道メータの自動検針信号、或いは住宅又は事務所等の建物について複数箇所に検知センサを設置し、検知センサから出力された異常状態検知信号を無線通信を用いて伝送することが行われている。こうした装置では、監視領域に設置された子機に検針および検知信号が入力され、複数の子機から親機に対して監視状態に関する信号が無線通信により集められて、親機からセンタ装置に通報が行われるようになっている。   In such remote monitoring devices, automatic meter reading signals for gas and water meters, or detection sensors are installed at multiple locations for buildings such as houses or offices, and abnormal state detection signals output from the detection sensors are transmitted using wireless communication. To be done. In such a device, meter reading and detection signals are input to the slave unit installed in the monitoring area, and signals related to the monitoring status are collected from a plurality of slave units to the master unit by wireless communication, and the master unit reports to the center unit. Is to be done.

監視領域を常時監視するためには、子機を常時動作状態としておくことが理想的であるが、消費電力が大きくなってしまうためできるだけ消費電力を低減する工夫がなされている。特に、電池により動作するように設計された子機の場合には消費電力を抑えて長期間安定して動作することが望ましい。   In order to constantly monitor the monitoring area, it is ideal to keep the slave unit in an always operating state. However, since power consumption becomes large, a contrivance has been made to reduce power consumption as much as possible. In particular, in the case of a slave unit designed to operate with a battery, it is desirable to operate stably for a long period of time while suppressing power consumption.

図７は、従来の子機の受信待機状態の通信制御を示すタイムチャートであり、子機は時間Ｔ毎に受信起床期間が設定され、間欠周期で受信可能状態となることで消費電力を低減させるようにしている。そして、親機からの呼出信号は、時間Ｔの間連続して送信されるため、その間に子機が受信起床期間となると、子機が呼出信号に応答して立ち上がり、親機の呼出終了後に通信を開始するようになる。   FIG. 7 is a time chart showing communication control in a reception standby state of a conventional slave unit. The slave unit has a reception wake-up period set for each time T, and is able to receive at an intermittent period, thereby reducing power consumption. I try to let them. Since the calling signal from the parent device is continuously transmitted during time T, if the child device enters the reception wake-up period during that time, the child device rises in response to the calling signal, and after the calling of the parent device is completed. Communication starts.

また、例えば、特許文献１では、電波捕獲時の電力消費状況をユーザーに通知して、電池寿命により設定された設定情報により電波捕獲時の動作を制御するようにした点が記載されている。また、特許文献２では、受信手段で受信された受信信号が送信システムからの送信信号であるか判定して送信信号でない場合には、電源の周期的なオン・オフ動作を維持させるようにした点が記載されている。
特開２００４−２９７２７８号公報 特開昭６２−５３５４８号公報 For example, Patent Document 1 describes that the user is notified of the power consumption status at the time of radio wave capture, and the operation at the time of radio wave capture is controlled by setting information set based on the battery life. Also, in Patent Document 2, it is determined whether the received signal received by the receiving means is a transmission signal from the transmission system, and when the received signal is not a transmission signal, the periodic on / off operation of the power source is maintained. Points are listed.
JP 2004-297278 A JP-A-62-53548

図７で説明した従来技術の場合、子機が間欠周期で受信起床期間が設定されているので、常時受信可能状態とされずその分消費電力の低減が図られているが、受信起床期間において親機からの呼出信号を受信した場合親機からの連続呼出信号が終了するまで監視する必要があり、その間子機において無駄な消費電力が生じてしまう。遠隔監視装置では、受信休止期間が１０秒程度と長く設定されているため、その分連続呼出信号の終了までの期間も長くなり、無駄な消費電力が大きくなる。   In the case of the prior art described in FIG. 7, since the reception wake-up period is set for the slave unit in an intermittent cycle, the reception is not always possible and power consumption is reduced accordingly. When a call signal from the parent device is received, it is necessary to monitor until the continuous call signal from the parent device is completed, and wasteful power consumption occurs in the child device during that time. In the remote monitoring apparatus, since the reception suspension period is set to be as long as about 10 seconds, the period until the end of the continuous call signal is increased accordingly, and wasteful power consumption is increased.

また、親機から所定期間連続送信される呼出信号がフェージング等のノイズにより途切れてしまうと、子機側で呼出信号が終了したと誤って認識してしまうため、そのための対策を講じる必要がある。   In addition, if the call signal transmitted continuously from the parent device for a predetermined period is interrupted by noise such as fading, the child device will mistakenly recognize that the call signal has ended, and it is necessary to take measures for that. .

そこで、本発明は、親機から連続呼出信号が送信されている間に生じる無駄な消費電力を抑えるとともにフェージング等のノイズに対しても影響を受けることなく安定して受信動作を行うことができる遠隔監視装置を提供することを目的とするものである。   Therefore, the present invention can suppress wasteful power consumption that occurs while a continuous call signal is transmitted from the base unit and can perform a reception operation stably without being affected by noise such as fading. The object is to provide a remote monitoring device.

本発明に係る遠隔監視装置は、受信待機状態において所定の間欠周期で受信起床期間が設定されている子機と、子機との間で無線通信を行うとともに子機に対して所定期間呼出信号を送信する親機とを備えた遠隔監視装置において、前記親機は、前記呼出信号にとともに呼出終了タイミング情報を送信する呼出制御手段を備え、前記子機は、前記受信起床期間に受信した前記呼出終了タイミング情報に基づいて呼出終了時刻まで受信休止期間に設定する受信制御手段を備えていることを特徴とする。さらに、前記呼出終了タイミング情報は、呼出終了時刻又は呼出終了までに送信される呼出信号のカウント値であることを特徴とする。   The remote monitoring device according to the present invention performs wireless communication between a slave unit in which a reception wake-up period is set at a predetermined intermittent period in a reception standby state and a call signal for a predetermined period to the slave unit In the remote monitoring device including the parent device for transmitting the call, the parent device includes call control means for transmitting call end timing information together with the call signal, and the child device receives the reception signal during the reception wake-up period. A reception control means for setting a reception suspension period until the call end time based on the call end timing information is provided. Further, the call end timing information is a call end time or a count value of a call signal transmitted before the end of the call.

本発明に係る遠隔監視装置の通信制御方法は、受信待機状態において所定の間欠周期で受信起床期間が設定されている子機に対して親機から所定期間呼出信号を送信する遠隔監視装置の通信制御方法において、前記親機が前記呼出信号とともに呼出終了タイミング情報を送信し、前記子機が前記受信起床期間に受信した前記呼出終了タイミング情報に基づいて呼出終了時刻まで受信休止期間に設定することを特徴とする。   The communication control method of the remote monitoring device according to the present invention is a communication of a remote monitoring device that transmits a calling signal from a parent device for a predetermined period to a child device in which a reception wake-up period is set at a predetermined intermittent period in a reception standby state. In the control method, the master unit transmits call termination timing information together with the call signal, and sets the reception suspension period until the call termination time based on the call termination timing information received by the slave unit during the reception wakeup period. It is characterized by.

本発明に係る遠隔監視装置は、上記のような構成を有することで、親機から呼出信号とともに送信される呼出終了タイミング情報に基づいて子機側では呼出終了時刻を知ることができるので、呼出終了時刻まで受信休止期間に設定することが可能となり、呼出終了時刻までの間無駄な消費電力を抑えることができる。また、呼出信号の終了を監視する必要がなくなるので、フェージング等のノイズにより呼出信号が途切れても正確に呼出終了時刻に受信可能な状態に設定することができる。   Since the remote monitoring device according to the present invention has the above-described configuration, the slave unit can know the call end time based on the call end timing information transmitted together with the call signal from the master unit. It is possible to set the reception suspension period until the end time, and wasteful power consumption can be suppressed until the call end time. Further, since it is not necessary to monitor the end of the call signal, even if the call signal is interrupted due to noise such as fading, it can be set in a state where it can be accurately received at the call end time.

そして、呼出終了タイミング情報として、呼出終了時刻又は呼出終了までに送信される呼出信号のカウント値を呼出信号とともに送信することで、子機側で確実に呼出終了時刻を知ることができる。
更に、自局宛てでないと判断した子機では、他局間の通信の終了を正確に予測できる（即ち、呼出終了時刻に一定時間、例えば５〜６秒の通信時間を加えた時間が他局の通信終了時間である）から、多局間通信時間は間欠起床動作を停止することができ、その面からも電池の消耗を低減させることができる。 Then, as the call end timing information, the call end time or the count value of the call signal transmitted until the end of the call is transmitted together with the call signal, so that the call end time can be surely known on the handset side.
Furthermore, in the slave unit that is determined not to be addressed to the own station, the end of communication between other stations can be accurately predicted (that is, a time obtained by adding a certain time, for example, 5 to 6 seconds of communication time to the call end time) Therefore, the intermittent wake-up operation can be stopped during the multi-station communication time, and the consumption of the battery can be reduced from this aspect.

以下、本発明に係る実施形態について詳しく説明する。なお、以下に説明する実施形態は、本発明を実施するにあたって好ましい具体例であるから、技術的に種々の限定がなされているが、本発明は、以下の説明において特に本発明を限定する旨明記されていない限り、これらの形態に限定されるものではない。   Hereinafter, embodiments according to the present invention will be described in detail. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is particularly limited in the following description. Unless otherwise specified, the present invention is not limited to these forms.

図１は、本発明に係る実施形態に関する概略構成図である。親機１、子機２Ａ及び２Ｂ、ガス漏れセンサＳ１及びＳ３、ガスメータＳ２及びＳ４を備えている。親機１は、図２に示すように、装置全体の制御を行う制御部１０、制御処理に必要なプログラムやデータを記憶する記憶部１１、ガス検針センタと通信を行う際に例えば携帯電話回線などの無線通信網を介してガス検針センタとパケット通信を行うためのプロトコル処理（ＴＣＰ／ＩＰ）を行うプロトコル処理部１２及びパケット通信部１３、子機２Ａ及び２Ｂとの間で無線通信で信号を送受信する送受信部１４、装置内の各部に電源電圧Ｖｃｃを供給する電源部１５を備えている。   FIG. 1 is a schematic configuration diagram relating to an embodiment of the present invention. A master unit 1, slave units 2A and 2B, gas leak sensors S1 and S3, and gas meters S2 and S4 are provided. As shown in FIG. 2, the main unit 1 includes a control unit 10 that controls the entire apparatus, a storage unit 11 that stores programs and data necessary for control processing, and a mobile phone line when communicating with a gas metering center. The protocol processing unit 12 and the packet communication unit 13 that perform protocol processing (TCP / IP) for performing packet communication with the gas metering center via a wireless communication network such as a wireless communication signal between the slave units 2A and 2B A transmission / reception unit 14 for transmitting and receiving, and a power supply unit 15 for supplying a power supply voltage Vcc to each unit in the apparatus.

子機２Ａ及び２Ｂは、図３に示すように、装置全体の制御を行う制御部２０、通報装置１との間で無線通信で信号を送受信する送受信部２１、制御処理に必要なプログラムやデータを記憶する記憶部２２、監視対象の機器であるガス漏れセンサＳ１及びＳ３もしくはガスメータＳ２及びＳ４と有線で接続される機器接続部２３、装置内の各部に電源電圧Ｖｃｃを供給する電源部２４を備えている。   As shown in FIG. 3, the slave units 2 </ b> A and 2 </ b> B include a control unit 20 that controls the entire device, a transmission / reception unit 21 that transmits and receives signals to and from the notification device 1, and programs and data necessary for control processing A storage unit 22 for storing the gas, a gas leakage sensor S1 and S3 or a gas meter S2 and S4 which are devices to be monitored, a device connection unit 23 connected by wire, and a power supply unit 24 for supplying a power supply voltage Vcc to each unit in the apparatus. I have.

親機１の制御部１０は、各子機に対して呼出信号を送受信部１４を介して送信する呼出制御部１００を備えている。呼出制御部１００は、子機において時間Ｔ毎に設定された受信起床期間に対応して時間Ｔの間連続して呼出信号を繰り返し送信するように制御する。そして、呼出信号を送信する際に呼出終了までの残りの呼出信号のカウント値を送信する。例えば、呼出信号を時間Ｔの間に１０回送信する場合には、１回目の呼出信号を送信する場合にはカウント値として９を送信する。２回目以降の呼出信号送信時においても１ずつ減算したカウント値が送信されるようになる。   The control unit 10 of the parent device 1 includes a call control unit 100 that transmits a call signal to each child device via the transmission / reception unit 14. The call control unit 100 controls the slave unit to repeatedly transmit a call signal continuously for a time T corresponding to the reception wake-up period set for each time T. When the call signal is transmitted, the count value of the remaining call signal until the end of the call is transmitted. For example, when the call signal is transmitted 10 times during time T, 9 is transmitted as the count value when the first call signal is transmitted. The count value decremented by 1 is transmitted even when the call signal is transmitted for the second time and thereafter.

一方、各子機の制御部２０は、親機１からの呼出信号を受信して動作制御する受信制御部２００を備えている。受信制御部２００は、受信起床期間内に親機１から呼出信号を受信した場合に、呼出信号とともに受信したカウント値を取得して呼出終了時刻を算出し、呼出終了時刻まで受信待機状態に戻すように制御する。カウント値は、呼出終了時刻までの呼出信号の回数であるから、単一の呼出信号の出力時間を予め記憶しておけばカウント値から呼出終了までの時間が算出できる。算出された時間をタイマにセットして受信待機状態に戻り、タイマがカウントアップしたら受信可能状態に立ち上げることで、呼出終了のタイミングに合せて親機との間で通信処理を行うことができる。   On the other hand, the control unit 20 of each slave unit includes a reception control unit 200 that receives a call signal from the master unit 1 and controls operation. When receiving a call signal from base unit 1 during reception wake-up period, reception control unit 200 obtains the count value received together with the call signal, calculates the call end time, and returns to the reception standby state until the call end time. To control. Since the count value is the number of call signals until the call end time, if the output time of a single call signal is stored in advance, the time from the count value to the call end can be calculated. Set the calculated time in the timer to return to the reception standby state, and when the timer counts up, start up to the reception-ready state, so that communication processing can be performed with the parent device in accordance with the timing of call termination .

図５は、親機１から呼出信号が子機に対して送信された場合のタイムチャートである。子機側では、時間Ｔ毎に受信起床期間が設けられており、親機側では時間Ｔの間連続して呼出信号が５回送信されるようになっている。そして、２回目の呼出信号が送信された際に子機が受信起床期間となって呼出信号とともにカウント値３が取得される。子機側では、カウント値３に基づいて呼出終了までの時間を算出して受信待機状態に戻る。算出した時間が経過すると、子機側が受信可能な状態に立ち上がり、親機との間で通信が行われるようになる。   FIG. 5 is a time chart when the calling signal is transmitted from the parent device 1 to the child device. On the slave unit side, a reception wake-up period is provided for each time T, and the call signal is transmitted five times continuously for the time T on the master unit side. When the second call signal is transmitted, the slave unit enters the reception wake-up period, and the count value 3 is acquired together with the call signal. On the side of the slave unit, the time until the end of the call is calculated based on the count value 3 and returns to the reception standby state. When the calculated time elapses, the slave unit starts to receive data, and communication is performed with the master unit.

図６は、子機において呼出信号を受信する場合の処理フローを示している。子機は、通常受信待機状態に設定されており（Ｓ１００）、時間Ｔが経過したか否かチェックして（Ｓ１０１）時間Ｔが経過すると受信起床期間となり受信処理を行い（Ｓ１０２）、親機１からの呼出信号の受信の有無がチェックされる（Ｓ１０３）。呼出信号を受信しない場合にはステップＳ１００に戻って受信待機状態が継続される。   FIG. 6 shows a processing flow when the slave unit receives a call signal. The slave unit is set in a normal reception standby state (S100), and checks whether or not the time T has elapsed (S101). When the time T elapses, a reception wake-up period is performed and reception processing is performed (S102). Whether or not a call signal from 1 is received is checked (S103). When the call signal is not received, the process returns to step S100 and the reception standby state is continued.

ステップＳ１０３で呼出信号を受信した場合には、呼出信号とともに送信されたカウント値を取得し（Ｓ１０４）、カウント値に基づいて呼出終了までの時間Ｓが算出される（Ｓ１０５）。そして、算出した時間Ｓをタイマにセットして再び受信待機状態に戻る（Ｓ１０６）。次に、時間Ｓが経過したかチェックされ（Ｓ１０７）、経過していない場合にはステップＳ１０６に戻って受信待機状態が継続する。時間Ｓが経過した場合には、受信可能な状態に立ち上がり、親機との間で通信処理が行われる（Ｓ１０８）。そして、通信処理が終了すると、ステップＳ１００に戻って再び受信待機状態に設定される。   When the call signal is received in step S103, the count value transmitted together with the call signal is acquired (S104), and the time S until the call ends is calculated based on the count value (S105). Then, the calculated time S is set in the timer, and the process returns to the reception standby state (S106). Next, it is checked whether the time S has passed (S107), and if it has not passed, the process returns to step S106 and the reception standby state continues. When the time S elapses, the mobile phone stands up in a receivable state and performs communication processing with the parent device (S108). When the communication process ends, the process returns to step S100 and is again set in the reception standby state.

以上説明した例では、呼出信号とともにカウント値を送信するようにしているが、カウント値の代わりに呼出終了時刻を送信するようにしてもよい。その場合には、子機側で呼出終了時刻を取得し、時計回路等からの現在時刻のデータをチェックして呼出終了時刻が到来するまで受信待機状態に設定するようにすればよい。
また、子機が親機に対して呼出信号を送信する場合についても同様に、送信時に親機から他の子機への呼出信号を受信すると、その呼出終了までの時間に親機と呼出を受けた他の子機とのおおよその通信時間を加えた時間を算出し、その時間を当該子機が親機に送信を開始するまでの待機時間とすることでも同様の効果を得ることが出来る。 In the example described above, the count value is transmitted together with the call signal, but the call end time may be transmitted instead of the count value. In that case, the call end time may be acquired on the handset side, the current time data from the clock circuit or the like may be checked, and the reception standby state may be set until the call end time arrives.
Similarly, when the slave unit transmits a call signal to the master unit, when a call signal from the master unit to another slave unit is received at the time of transmission, the call to the master unit is made at the time until the end of the call. The same effect can be obtained by calculating the time including the approximate communication time with other slave units that have been received and setting that time as the standby time until the slave unit starts transmission to the master unit. .

本発明に係る実施形態に関する概略構成図である。It is a schematic block diagram regarding embodiment which concerns on this invention. 親機に関する概略ブロック図である。It is a schematic block diagram regarding a main | base station. 子機に関する概略ブロック図である。It is a schematic block diagram regarding a subunit | mobile_unit. 親機から呼出信号が子機に対して送信された場合のタイムチャートである。It is a time chart when the calling signal is transmitted from the parent device to the child device. 子機において呼出信号を受信する場合の処理フローである。It is a processing flow in the case of receiving a call signal in the slave unit. 親機から呼出信号が子機に対して送信された場合の従来のタイムチャートである。It is the conventional time chart when the calling signal is transmitted with respect to the subunit | mobile_unit from the main | base station.

符号の説明Explanation of symbols

１・・・親機、２・・・子機、100・・・呼出制御部、200・・・受信制御部。 DESCRIPTION OF SYMBOLS 1 ... Master unit, 2 ... Slave unit, 100 ... Call control part, 200 ... Reception control part.

Claims (3)

受信待機状態において所定の間欠周期で受信起床期間が設定されている子機と、子機との間で無線通信を行うとともに子機に対して所定期間呼出信号を送信する親機とを備えた遠隔監視装置において、前記親機は、前記呼出信号にとともに呼出終了タイミング情報を送信する呼出制御手段を備え、前記子機は、前記受信起床期間に受信した前記呼出終了タイミング情報に基づいて呼出終了時刻まで受信休止期間に設定する受信制御手段を備えていることを特徴とする遠隔監視装置。   A slave unit in which a reception wake-up period is set at a predetermined intermittent period in a reception standby state, and a master unit that performs wireless communication with the slave unit and transmits a call signal to the slave unit for a predetermined period of time In the remote monitoring device, the master unit includes call control means for transmitting call termination timing information together with the call signal, and the slave unit terminates the call based on the call termination timing information received during the reception wake-up period. A remote monitoring device comprising reception control means for setting a reception suspension period until time. 前記呼出終了タイミング情報は、呼出終了時刻又は呼出終了までに送信される呼出信号のカウント値であることを特徴とする請求項１に記載の遠隔監視装置。   The remote monitoring device according to claim 1, wherein the call end timing information is a call end time or a count value of a call signal transmitted before the call ends. 受信待機状態において所定の間欠周期で受信起床期間が設定されている子機に対して親機から所定期間呼出信号を送信する遠隔監視装置の通信制御方法において、前記親機が前記呼出信号にとともに呼出終了タイミング情報を送信し、前記子機が前記受信起床期間に受信した前記呼出終了タイミング情報に基づいて呼出終了時刻まで受信休止期間に設定することを特徴とする遠隔監視装置の通信制御方法。   In a communication control method of a remote monitoring apparatus for transmitting a call signal from a parent device for a predetermined period to a child device in which a reception wake-up period is set at a predetermined intermittent period in a reception standby state, the parent device transmits the call signal together with the call signal A communication control method for a remote monitoring apparatus, wherein call termination timing information is transmitted and a reception suspension period is set until a call termination time based on the call termination timing information received by the slave unit during the reception wakeup period.
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