JPH082417A - Information transmission device - Google Patents
Information transmission deviceInfo
- Publication number
- JPH082417A JPH082417A JP14172294A JP14172294A JPH082417A JP H082417 A JPH082417 A JP H082417A JP 14172294 A JP14172294 A JP 14172294A JP 14172294 A JP14172294 A JP 14172294A JP H082417 A JPH082417 A JP H082417A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- frequency
- signal
- child
- child devices
- 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.)
- Pending
Links
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
- Selective Calling Equipment (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、車両制御に係る情報伝
送装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle control information transmission device.
【０００２】[0002]
【従来の技術】従来の情報伝送装置としては、ポーリン
グ方式を採用したものが知られている。ポーリング方式
の情報伝送装置は、親装置が各子装置に個別に送信指令
信号を送信し、各子装置が送信指令信号に応答し、自己
の送信データを返信信号として親装置に送信する。送信
指令信号及び返信信号は、周波数偏移キーイング信号
（以下ＦＳＫ信号という。）として送信される。送信指
令信号と返信信号は、異なる周波数帯域のＦＳＫ信号と
なっている。子装置は親装置から遠く離れて設置される
場合が多い。また、周辺には種々の機器が設けられ、本
装置で使用できる周波数帯域は狭い帯域に制限されてい
る。2. Description of the Related Art As a conventional information transmission device, a device employing a polling method is known. In the polling type information transmission device, the parent device individually transmits a transmission command signal to each child device, each child device responds to the transmission command signal, and transmits its own transmission data to the parent device as a reply signal. The transmission command signal and the reply signal are transmitted as a frequency shift keying signal (hereinafter referred to as an FSK signal). The transmission command signal and the reply signal are FSK signals in different frequency bands. The child device is often installed far away from the parent device. In addition, various devices are provided in the vicinity, and the frequency band that can be used in this device is limited to a narrow band.
【０００３】子装置から親装置に伝送される情報は、全
てが親装置からの送信指令信号に応答して即座に送信し
なければならないものではない。例えば、踏切の故障情
報等は、一定の周期内で子装置から親装置に伝送されれ
ばよい。All the information transmitted from the child device to the parent device does not have to be immediately transmitted in response to the transmission command signal from the parent device. For example, the failure information of the railroad crossing may be transmitted from the child device to the parent device within a certain period.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
情報伝送装置は、以下の問題点が未解決となっている。 （Ａ）親装置は、子装置を逐次指定し、指定された子装
置から情報を得る。このため、親装置が子装置を指定す
る送信指令信号の送信時間が子装置の数に比例して増
え、情報伝送に要する総時間が長くなる。 （Ｂ）親装置及び子装置は、それぞれが異なる周波数帯
域のＦＳＫ信号を送信する。このため、子装置が多くな
って、子装置を複数のグループに分けて情報伝送をする
際に、周波数帯域が足りなくなる。その結果、多重通信
による情報伝送時間の短縮ができない。However, the following problems have not been solved in the conventional information transmission device. (A) The parent device sequentially designates child devices and obtains information from the designated child devices. Therefore, the transmission time of the transmission command signal for specifying the child device by the parent device increases in proportion to the number of child devices, and the total time required for information transmission becomes longer. (B) The parent device and the child device transmit FSK signals in different frequency bands. Therefore, the number of child devices increases, and the frequency band becomes insufficient when information is transmitted by dividing the child devices into a plurality of groups. As a result, the information transmission time cannot be shortened by multiplex communication.
【０００５】そこで、本発明の課題は、情報伝送の総時
間を短縮し得る情報伝送装置を提供することである。Therefore, an object of the present invention is to provide an information transmission device capable of shortening the total time of information transmission.
【０００６】本発明のもう一つの課題は、周波数帯域を
有効に使用し得る情報伝送装置を提供することである。Another object of the present invention is to provide an information transmission device which can effectively use a frequency band.
【０００７】本発明のもう一つの課題は、多重通信によ
り情報伝送に要する時間を短縮し得る情報伝送装置を提
供することである。Another object of the present invention is to provide an information transmission device capable of shortening the time required for information transmission by multiplex communication.
【０００８】[0008]
【課題を解決するための手段】上述した課題解決のた
め、本発明に係る情報伝送装置は、複数の子装置と、親
装置とを含んでいる。前記子装置は、少なくとも２つの
グループに分けられ、前記親装置から送信指令信号が与
えられ、それぞれがそれぞれのグループ内において前記
送信指令信号に応じた自己の送信順位が予め定められ、
前記送信順位が来たときに自己の送信データをそのグル
ープに固有の周波数の周波数変調信号として送信する。
前記親装置は、一定の周期で全ての前記子装置に同時に
前記送信指令信号を送信し、前記子装置から順次送信さ
れる前記周波数変調信号を受信する。In order to solve the above problems, an information transmission apparatus according to the present invention includes a plurality of child devices and a parent device. The child device is divided into at least two groups, a transmission command signal is given from the parent device, each of which has its own transmission order determined in advance in accordance with the transmission command signal in each group,
When the transmission order comes, it transmits its own transmission data as a frequency-modulated signal having a frequency unique to the group.
The parent device simultaneously transmits the transmission command signal to all the child devices in a constant cycle, and receives the frequency modulation signal sequentially transmitted from the child devices.
【０００９】好ましい例では、前記周波数変調信号は、
ＦＳＫ信号でなる。In a preferred example, the frequency modulated signal is
It consists of the FSK signal.
【００１０】別の好ましい例では、親装置から遠く離れ
た位置にあるグループの子装置が低い周波数の周波数変
調信号を送信し、親装置に近い位置にあるグループの子
装置が高い周波数の周波数変調信号を送信する。In another preferred example, a child device of a group located far from the parent device transmits a low frequency frequency modulation signal, and a child device of a group located near the parent device modulates a high frequency frequency. Send a signal.
【００１１】別の好ましい例では、前記送信指令信号
は、周波数変調されない連続波でなる。In another preferred example, the transmission command signal is a continuous wave that is not frequency-modulated.
【００１２】別の好ましい例では、前記送信指令信号
は、周波数が許容周波数帯域の上限となっている。In another preferable example, the frequency of the transmission command signal is the upper limit of the allowable frequency band.
【００１３】[0013]
【作用】子装置は、少なくとも２つのグループに分けら
れ、親装置から送信指令信号が与えられる。子装置のそ
れぞれは、それぞれのグループ内において送信指令信号
に応じた自己の送信順位が予め定められ、自己の送信順
位が来たときに自己の送信データをそのグループに固有
の周波数の周波数変調信号として送信する。親装置は、
定められた周期で全ての子装置に同時に送信指令信号を
送信し、子装置から順次送信される周波数変調信号を受
信する。この構成によれば、子装置は送信指令信号を同
期信号として自己の送信時期を定め、その送信時期に自
己の送信データを送信するので、親装置は、子装置を順
次呼び出す必要がなくなる。このため、子装置に対する
送信指令信号の送信時間が短縮され、情報伝送の総時間
を短縮し得る情報伝送装置が得られる。The child device is divided into at least two groups, and the transmission command signal is given from the parent device. Each of the slave devices has its own transmission order determined in advance in accordance with the transmission command signal in each group, and when its own transmission order comes, its own transmission data is sent as a frequency-modulated signal of a frequency unique to the group. To send as. The parent device is
The transmission command signal is simultaneously transmitted to all the child devices in a predetermined cycle, and the frequency modulated signals sequentially transmitted from the child devices are received. According to this configuration, the child device determines its own transmission time by using the transmission command signal as a synchronization signal and transmits its own transmission data at that transmission time, so that the parent device does not need to sequentially call the child devices. Therefore, the transmission time of the transmission command signal to the child device is shortened, and the information transmission device capable of shortening the total time of information transmission is obtained.
【００１４】送信指令信号は、子装置の送信順位に基づ
き、子装置の送信時期を定めるトリガ信号に過ぎないか
ら、単純な構成で済み、周波数変調信号とする必要はな
い。このため、送信指令信号に割り当てられていた周波
数帯域を子装置の周波数変調信号に割り当てることがで
き、周波数帯域を有効に使用し得る情報伝送装置が得ら
れる。Since the transmission command signal is only a trigger signal that determines the transmission timing of the slave device based on the transmission order of the slave device, it has a simple structure and does not need to be a frequency modulation signal. Therefore, the frequency band assigned to the transmission command signal can be assigned to the frequency modulation signal of the child device, and an information transmission device that can effectively use the frequency band can be obtained.
【００１５】周波数帯域は複数のグループの周波数変調
信号の周波数帯域に分割して使用されるから、親装置は
各グループに属する子装置の周波数変調信号を同時に受
信でき、情報伝送に要する時間を短縮し得る情報伝送装
置が得られる。Since the frequency band is used by dividing it into the frequency bands of the frequency modulation signals of a plurality of groups, the parent device can simultaneously receive the frequency modulation signals of the child devices belonging to each group, and the time required for information transmission is shortened. A possible information transmission device is obtained.
【００１６】[0016]
【実施例】図１は本発明に係る情報伝送装置の構成を示
すブロック図、図２は本発明に係る情報伝送装置の動作
を説明するタイムチャートである。本発明に係る情報伝
送装置は、踏切警報装置等の現場機器の故障情報収集を
行なうものであり、複数の子装置１１〜１ｎ、２１〜２
ｎと、親装置３とを含んでいる。1 is a block diagram showing the configuration of an information transmitting apparatus according to the present invention, and FIG. 2 is a time chart for explaining the operation of the information transmitting apparatus according to the present invention. The information transmission device according to the present invention collects failure information of field devices such as a railroad crossing warning device, and includes a plurality of child devices 11-1n, 21-2.
n and the parent device 3.
【００１７】子装置１１〜１ｎは、Ａグループを構成
し、子装置２１〜２ｎは、Ｂグループを構成している。
子装置１１〜１ｎは、親装置３から送信指令信号Ｆs1が
与えられ、Ａグループ内において送信指令信号Ｆs1に応
じた自己の送信順位が予め定められ、その送信順位が来
たときに自己の送信データをＡグループに固有の周波数
の周波数変調信号Ｆ11〜Ｆ1nとして送信する。送信順位
は、子装置１１が最初となり、子装置１ｎが最後とな
る。同様に、子装置２１〜２ｎは、親装置３から送信指
令信号Ｆs1が与えられ、Ｂグループ内において送信指令
信号Ｆs1に応じた自己の送信順位が予め定められ、その
送信順位が来たときに自己の送信データをＢグループに
固有の周波数の周波数変調信号Ｆ21〜Ｆ2nとして送信す
る。送信順位は、子装置２１が最初となり、子装置２ｎ
が最後となる。子装置１１〜１ｎ及び子装置２１〜２ｎ
は、送信指令信号Ｆs1を受信した時刻ｔ0 から計数を開
始し、自己に定められた計数になったときに、周波数変
調信号Ｆ11〜Ｆ1n及び周波数変調信号Ｆ21〜Ｆ2nを送信
する。子装置１１及び子装置２１は、時刻ｔ1 におい
て、周波数変調信号Ｆ11及び周波数変調信号Ｆ21を送信
する。子装置１２及び子装置２２は、時刻ｔ2 におい
て、周波数変調信号Ｆ12及び周波数変調信号Ｆ22を送信
する。子装置１ｎ及び子装置２ｎは、時刻ｔn におい
て、周波数変調信号Ｆ1n及び周波数変調信号Ｆ2nを送信
する。The child devices 11 to 1n form an A group, and the child devices 21 to 2n form a B group.
The child devices 11 to 1n are given the transmission command signal Fs1 from the parent device 3, their own transmission order is predetermined according to the transmission command signal Fs1 in the A group, and their transmission order is reached when the transmission order comes. The data is transmitted as frequency modulation signals F11 to F1n having a frequency unique to the A group. In the transmission order, the child device 11 is first and the child device 1n is last. Similarly, the child devices 21 to 2n are given the transmission command signal Fs1 from the parent device 3, their own transmission order is predetermined according to the transmission command signal Fs1 in the B group, and when the transmission order comes. It transmits its own transmission data as frequency modulation signals F21 to F2n having a frequency unique to the B group. In the transmission order, the child device 21 comes first, and the child device 2n
Will be the last. Child devices 11 to 1n and child devices 21 to 2n
Starts counting from the time t0 when the transmission command signal Fs1 is received, and transmits the frequency modulation signals F11 to F1n and the frequency modulation signals F21 to F2n when the count reaches the number determined by itself. The child device 11 and the child device 21 transmit the frequency modulation signal F11 and the frequency modulation signal F21 at time t1. The child device 12 and the child device 22 transmit the frequency modulation signal F12 and the frequency modulation signal F22 at time t2. The child device 1n and the child device 2n transmit the frequency modulation signal F1n and the frequency modulation signal F2n at time tn.
【００１８】親装置３は、定められた周期Ｔで全ての子
装置１１〜１ｎ、２１〜２ｎに同時に送信指令信号Ｆs1
を送信し、子装置１１〜１ｎ、２１〜２ｎから順次送信
される周波数変調信号Ｆ11〜Ｆ1n、Ｆ21〜Ｆ2nを受信す
る。送信指令信号Ｆs1の周波数は、周波数変調信号Ｆ11
〜Ｆ1n、Ｆ21〜Ｆ2nの周波数と異なっている。The master device 3 simultaneously sends a transmission command signal Fs1 to all the slave devices 11 to 1n and 21 to 2n in a predetermined cycle T.
And frequency-modulated signals F11 to F1n and F21 to F2n sequentially transmitted from the child devices 11 to 1n and 21 to 2n. The frequency of the transmission command signal Fs1 is the frequency modulation signal F11.
˜F1n, F21˜F2n.
【００１９】図１及び図２を参照しながら、本発明に係
る情報伝送装置の実施例の動作を説明する。上述したよ
うに、子装置１１〜１ｎ、２１〜２ｎは、少なくとも２
つのグループＡ、Ｂに分けられ、親装置３から送信指令
信号Ｆs1が与えられる。子装置１１〜１ｎ、２１〜２ｎ
は、グループＡ、Ｂ内において送信指令信号Ｆs1に応じ
た自己の送信順位が予め定められ、自己の送信順位が来
たときに自己の送信データをグループＡ、Ｂに固有の周
波数の周波数変調信号Ｆ11〜Ｆ1n、Ｆ21〜Ｆ2nとして送
信する。親装置３は、定められた周期Ｔで全ての子装置
１１〜１ｎ、２１〜２ｎに同時に送信指令信号Ｆs1を送
信し、子装置１１〜１ｎ、２１〜２ｎから順次送信され
る周波数変調信号Ｆ11〜Ｆ1n、Ｆ21〜Ｆ2nを受信する。
この構成によれば、子装置１１〜１ｎ、２１〜２ｎは送
信指令信号Ｆs1を同期信号として自己の送信時期を定
め、その送信時期に自己の送信データを送信するので、
親装置３は、子装置１１〜１ｎ、２１〜２ｎを順次呼び
出す必要がなくなる。このため、子装置１１〜１ｎ、２
１〜２ｎに対する送信指令信号Ｆs1の送信時間が短縮さ
れ、情報伝送の総時間を短縮し得る情報伝送装置が得ら
れる。The operation of the embodiment of the information transmission apparatus according to the present invention will be described with reference to FIGS. 1 and 2. As described above, the child devices 11 to 1n and 21 to 2n have at least 2 units.
It is divided into two groups A and B, and a transmission command signal Fs1 is given from the parent device 3. Child devices 11-1n, 21-2n
Is a frequency-modulated signal of a frequency peculiar to groups A and B when its own transmission order is predetermined in groups A and B according to the transmission command signal Fs1 and when its own transmission order comes. It is transmitted as F11 to F1n and F21 to F2n. The parent device 3 simultaneously transmits the transmission command signal Fs1 to all the child devices 11 to 1n, 21 to 2n in a predetermined cycle T, and the frequency modulation signal F11 sequentially transmitted from the child devices 11 to 1n and 21 to 2n. ? F1n and F21 to F2n are received.
According to this configuration, since the child devices 11 to 1n and 21 to 2n determine their own transmission timing by using the transmission command signal Fs1 as a synchronization signal and transmit their own transmission data at the transmission timing,
The parent device 3 does not need to sequentially call the child devices 11 to 1n and 21 to 2n. Therefore, the child devices 11 to 1n and 2
The transmission time of the transmission command signal Fs1 for 1 to 2n is shortened, and the information transmission device capable of shortening the total time of information transmission is obtained.
【００２０】送信指令信号Ｆs1は、子装置１１〜１ｎ、
２１〜２ｎの送信順位に基づき、子装置１１〜１ｎ、２
１〜２ｎの送信時期を定めるトリガ信号に過ぎないか
ら、単純な構成で済み、周波数変調信号とする必要はな
い。このため、送信指令信号Ｆs1に割り当てられていた
周波数帯域を子装置２１〜２ｎの周波数変調信号Ｆ21〜
Ｆ2nに割り当てることができ、周波数帯域を有効に使用
し得る情報伝送装置が得られる。The transmission command signal Fs1 is transmitted to the child devices 11 to 1n,
Based on the transmission order of 21 to 2n, the child devices 11 to 1n and 2
Since it is only a trigger signal that determines the transmission time of 1 to 2n, it has a simple configuration and does not need to be a frequency modulation signal. Therefore, the frequency band allocated to the transmission command signal Fs1 is set to the frequency modulation signals F21 to F21 of the child devices 21 to 2n.
It is possible to obtain an information transmission device that can be assigned to F2n and can effectively use the frequency band.
【００２１】周波数帯域はグループＡ、Ｂの周波数変調
信号Ｆ11〜Ｆ1n、Ｆ21〜Ｆ2nの周波数帯域に分割して使
用されるから、親装置３はグループＡ、Ｂに属する子装
置１１及び子装置２１、子装置１ｎ及び子装置２ｎの周
波数変調信号Ｆ11及び周波数変調信号Ｆ21、周波数変調
信号Ｆ1n及び周波数変調信号Ｆ2nを同時に受信できる。
このため、情報伝送に要する時間を短縮し得る情報伝送
装置が得られる。Since the frequency band is used by being divided into the frequency bands of the frequency modulation signals F11 to F1n and F21 to F2n of the groups A and B, the parent device 3 is the child device 11 and the child device 21 belonging to the groups A and B. , The frequency modulation signal F11 and the frequency modulation signal F21 of the slave device 1n and the slave device 2n, the frequency modulation signal F1n and the frequency modulation signal F2n can be received at the same time.
Therefore, it is possible to obtain an information transmission device that can reduce the time required for information transmission.
【００２２】図３は信号の周波数割当図である。図は周
波数変調信号をＦＳＫ信号で構成した場合を示してい
る。図において、参照符号ｆ１は周波数変調信号Ｆ11〜
Ｆ1nの搬送波の周波数、ｆ11は状態「１」に対応する周
波数変調を行った場合の周波数、ｆ10は状態「０」に対
応する周波数変調を行った場合の周波数を示している。
同様に、ｆ２は周波数変調信号Ｆ21〜Ｆ2nの搬送波の周
波数、ｆ21は状態「１」に対応する周波数変調を行った
場合の周波数、ｆ22は状態「０」に対応する周波数変調
を行った場合の周波数を示している。実施例では、周波
数ｆ１が１５００Ｈｚ、周波数ｆ11が１２００Ｈｚ、周
波数ｆ10が１８００Ｈｚ、周波数ｆ２が３０００Ｈｚ、
周波数ｆ21が２７００Ｈｚ、周波数ｆ20が３３００Ｈｚ
に設定されている。送信指令信号Ｆs1は３９００Ｈｚに
設定されている。FIG. 3 is a frequency allocation diagram of signals. The figure shows a case where the frequency modulation signal is composed of an FSK signal. In the figure, reference numeral f1 indicates the frequency modulation signal F11 ...
The frequency of the carrier wave of F1n, f11 is the frequency when the frequency modulation corresponding to the state "1" is performed, and f10 is the frequency when the frequency modulation corresponding to the state "0" is performed.
Similarly, f2 is the frequency of the carrier wave of the frequency modulation signals F21 to F2n, f21 is the frequency when the frequency modulation corresponding to the state "1" is performed, and f22 is the frequency when the frequency modulation corresponding to the state "0" is performed. The frequency is shown. In the embodiment, the frequency f1 is 1500 Hz, the frequency f11 is 1200 Hz, the frequency f10 is 1800 Hz, and the frequency f2 is 3000 Hz.
Frequency f21 is 2700Hz, frequency f20 is 3300Hz
Is set to The transmission command signal Fs1 is set to 3900 Hz.
【００２３】この例では、子装置１１〜１ｎ、２１〜２
ｎの周波数変調信号Ｆ11〜Ｆ1n、Ｆ21〜Ｆ2nがデジタル
化され、多量の情報伝送ができる。例えば、本来の送信
データに加えて、自己の装置番号も送信できる。これに
より、親装置３は、子装置１１〜１ｎ、２１〜２ｎの周
波数変調信号Ｆ11〜Ｆ1n、Ｆ21〜Ｆ2nの送信タイミング
だけでなく、周波数変調信号Ｆ11〜Ｆ1n、Ｆ21〜Ｆ2nか
らどの子装置が送信したかを確実に識別できる。In this example, child devices 11-1n, 21-2
The n frequency modulated signals F11 to F1n and F21 to F2n are digitized, and a large amount of information can be transmitted. For example, the own device number can be transmitted in addition to the original transmission data. As a result, the parent device 3 determines which child device from the frequency modulated signals F11 to F1n, F21 to F2n, as well as the transmission timing of the frequency modulated signals F11 to F1n and F21 to F2n of the child devices 11 to 1n and 21 to 2n. You can be sure that you have sent.
【００２４】子装置１１〜１ｎ、２１〜２ｎは、親装置
３から遠く離れた位置にあるグループＡの子装置１１〜
１ｎが低い周波数の周波数変調信号Ｆ11〜Ｆ1nを送信
し、親装置３に近い位置にあるグループＢの子装置２１
〜２ｎが高い周波数の周波数変調信号Ｆ21〜Ｆ2nを送信
する。この例では、伝送距離の短い、高い周波数帯域の
周波数変調信号Ｆ21〜Ｆ2nが親装置３に近い位置の子装
置２１〜２ｎに割り当てられ、伝送距離の長い、低い周
波数帯域の周波数変調信号Ｆ11〜Ｆ1nが親装置３に遠い
位置の子装置１１〜１ｎに割り当てられ、長距離伝送が
可能になる。The child devices 11 to 1n and 21 to 2n are the child devices 11 to 11 of the group A, which are located far from the parent device 3.
1n transmits the frequency-modulated signals F11 to F1n having a low frequency, and the child device 21 of the group B located near the parent device 3
The frequency modulated signals F21 to F2n having a high frequency up to 2n are transmitted. In this example, the frequency modulation signals F21 to F2n in the high frequency band having a short transmission distance are assigned to the child devices 21 to 2n located close to the parent device 3, and the frequency modulation signals F11 to Fn in the low frequency band having a long transmission distance are transmitted. F1n is assigned to the child devices 11 to 1n located far from the parent device 3 to enable long-distance transmission.
【００２５】送信指令信号Ｆs1は、周波数変調されない
連続波でなる。この例では、周波数帯域を最も節約で
き、周波数帯域を子装置１１〜１ｎ、２１〜２ｎの周波
数変調信号Ｆ11〜Ｆ1n、Ｆ21〜Ｆ2nに最も効果的に利用
できる。The transmission command signal Fs1 is a continuous wave that is not frequency-modulated. In this example, the frequency band can be most saved, and the frequency band can be most effectively used for the frequency modulation signals F11 to F1n and F21 to F2n of the child devices 11 to 1n and 21 to 2n.
【００２６】送信指令信号Ｆs1は、周波数が許容周波数
帯域の上限となっている。この例では、送信指令信号Ｆ
s1の内容を判断する必要がないので、長距離伝送により
レベルが低下しても、子装置１１〜１ｎ、２１〜２ｎは
周波数ｆs1により送信指令信号Ｆs1であることを確実に
識別できる。このため、信号の内容を判断する必要のあ
る子装置１１〜１ｎ、２１〜２ｎの周波数変調信号Ｆ21
〜Ｆ2n、Ｆ21〜Ｆ2nを低い周波数帯域に割り当てること
ができる。その結果、長距離伝送が可能になる。The frequency of the transmission command signal Fs1 is the upper limit of the allowable frequency band. In this example, the transmission command signal F
Since it is not necessary to determine the content of s1, even if the level is lowered due to long-distance transmission, the slave devices 11 to 1n and 21 to 2n can reliably identify the transmission command signal Fs1 by the frequency fs1. Therefore, the frequency-modulated signal F21 of the child devices 11 to 1n and 21 to 2n that need to judge the content of the signal
.About.F2n and F21 to F2n can be assigned to low frequency bands. As a result, long distance transmission becomes possible.
【００２７】図４は本発明に係る情報伝送装置の別の実
施例の構成を示すブロック図である。本実施例は、図１
の実施例を複数の系統にした場合を示している。図にお
いて、図１と同一参照符号は同一性ある構成部分を示し
ている。参照符号４１、４３、５１、５３はバンドパス
フィルタ回路、４２、５２は増幅器である。バンドパス
フィルタ回路４１、４３は、送信指令信号Ｆs1の周波数
ｆs1を通過させる。バンドパスフィルタ回路５１、５３
は、周波数変調信号Ｆ11〜Ｆ1nの周波数ｆ１、ｆ11、ｆ
10を通過させる。増幅器４２、５２は、送信指令信号Ｆ
s1、周波数変調信号Ｆ11〜Ｆ1nを増幅する。送信指令信
号Ｆs1及び周波数変調信号Ｆ11〜Ｆ1nは、周波数帯域が
分けられているから、バンドパスフィルタ回路（４１、
４３）、（５１、５３）により分離され、増幅器４２、
５２により個別に増幅される。これにより、長距離伝送
が可能になる。周波数変調信号Ｆ21〜Ｆ2nを増幅する必
要がある場合は、Ｂグループの伝送ラインに、バンドパ
スフィルタ回路及び増幅器を設ければよい。FIG. 4 is a block diagram showing the configuration of another embodiment of the information transmission apparatus according to the present invention. This embodiment is shown in FIG.
It shows a case where the embodiment of (1) is made into a plurality of systems. In the figure, the same reference numerals as those in FIG. 1 denote the same components. Reference numerals 41, 43, 51 and 53 are bandpass filter circuits, and 42 and 52 are amplifiers. The bandpass filter circuits 41 and 43 allow the frequency fs1 of the transmission command signal Fs1 to pass. Bandpass filter circuits 51 and 53
Are frequencies f1, f11, f of the frequency modulated signals F11 to F1n.
Pass 10. The amplifiers 42 and 52 transmit the transmission command signal F
s1, the frequency modulation signals F11 to F1n are amplified. Since the transmission command signal Fs1 and the frequency modulation signals F11 to F1n have different frequency bands, the bandpass filter circuit (41,
43), (51, 53) separated by an amplifier 42,
Amplified individually by 52. This enables long distance transmission. When it is necessary to amplify the frequency modulation signals F21 to F2n, a bandpass filter circuit and an amplifier may be provided in the transmission line of the B group.
【００２８】また、複数の系統で同様の処理ができるの
で、多数の現場機器の故障情報等を収集できる。Further, since the same processing can be performed in a plurality of systems, it is possible to collect failure information of many field devices.
【００２９】図１の実施例及び図４の実施例は、周波数
帯域が６００Ｈｚから４ｋＨｚに制限される場合を示し
てあるが、更に広い周波数帯域が許容される場合は、更
に多くのグループ分けにより情報伝送することは言うま
でもない。The embodiment of FIG. 1 and the embodiment of FIG. 4 show the case where the frequency band is limited from 600 Hz to 4 kHz, but when a wider frequency band is allowed, more groups are used. It goes without saying that information is transmitted.
【００３０】[0030]
【発明の効果】以上述べたように、本発明によれば、以
下のような効果が得られる。 （ａ）子装置に対する送信指令信号の送信時間を短縮
し、情報伝送の総時間を短縮し得る情報伝送装置を提供
することができる。 （ｂ）周波数帯域を子装置の周波数変調信号にのみ割り
当て、周波数帯域を有効に使用し得る情報伝送装置を提
供することができる。 （ｃ）各グループに属する子装置の周波数変調信号を同
時に受信し、情報伝送に要する時間を短縮し得る情報伝
送装置を提供することができる。As described above, according to the present invention, the following effects can be obtained. (A) It is possible to provide an information transmission device capable of shortening the transmission time of a transmission command signal to a slave device and shortening the total time of information transmission. (B) It is possible to provide the information transmission device that can effectively use the frequency band by allocating the frequency band only to the frequency-modulated signal of the child device. (C) It is possible to provide an information transmission device that can simultaneously receive the frequency-modulated signals of the child devices belonging to each group and reduce the time required for information transmission.
【図１】本発明に係る情報伝送装置の構成を示すブロッ
ク図である。FIG. 1 is a block diagram showing a configuration of an information transmission device according to the present invention.
【図２】本発明に係る情報伝送装置の動作を説明するタ
イムチャートである。FIG. 2 is a time chart explaining the operation of the information transmission device according to the present invention.
【図３】信号の周波数割当図である。FIG. 3 is a frequency allocation diagram of signals.
【図４】本発明に係る情報伝送装置の別の実施例の構成
を示すブロック図である。FIG. 4 is a block diagram showing the configuration of another embodiment of the information transmission device according to the present invention.
１１〜１ｎ 子装置 ２１〜２ｎ 子装置 ３ 親装置 Ｆs1 送信指令信号 Ｆ11〜Ｆ1n 周波数変調信号 Ｆ21〜Ｆ2n 周波数変調信号 11-1n child device 21-2n child device 3 parent device Fs1 transmission command signal F11-F1n frequency modulation signal F21-F2n frequency modulation signal
Claims (5)
送装置であって、 前記子装置は、少なくとも２つのグループに分けられ、
前記親装置から送信指令信号が与えられ、それぞれがそ
れぞれのグループ内において前記送信指令信号に応じた
自己の送信順位が予め定められ、前記送信順位が来たと
きに自己の送信データをそのグループに固有の周波数の
周波数変調信号として送信するものであり、 前記親装置は、定められた周期で全ての前記子装置に同
時に前記送信指令信号を送信し、前記子装置から順次送
信される前記周波数変調信号を受信する情報伝送装置。1. An information transmission device including a plurality of child devices and a parent device, wherein the child devices are divided into at least two groups,
A transmission command signal is given from the parent device, and each of its own transmission order is predetermined according to the transmission command signal in each group, and when the transmission order comes, its own transmission data is given to the group. It is to be transmitted as a frequency-modulated signal of a specific frequency, the parent device simultaneously transmits the transmission command signal to all the child devices in a predetermined cycle, the frequency modulation sequentially transmitted from the child device. An information transmission device that receives a signal.
イング信号でなる請求項１に記載の情報伝送装置。2. The information transmission device according to claim 1, wherein the frequency modulation signal is a frequency shift keying signal.
置にあるグループのものが低い周波数の周波数変調信号
を送信し、親装置に近い位置にあるグループのものが高
い周波数の周波数変調信号を送信する請求項１または２
に記載の情報伝送装置。3. The child device transmits a frequency-modulated signal of a low frequency to a group located far from the parent device, and a frequency-modulated signal of a high frequency to a group located near the parent device. 1 or 2 for transmitting
The information transmission device described in 1.
い連続波でなる請求項１、２または３に記載の情報伝送
装置。4. The information transmission device according to claim 1, 2 or 3, wherein the transmission command signal is a continuous wave that is not frequency-modulated.
数帯域の上限となっている請求項４に記載の情報伝送装
置。5. The information transmission device according to claim 4, wherein the frequency of the transmission command signal is an upper limit of an allowable frequency band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14172294A JPH082417A (en) | 1994-06-23 | 1994-06-23 | Information transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14172294A JPH082417A (en) | 1994-06-23 | 1994-06-23 | Information transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH082417A true JPH082417A (en) | 1996-01-09 |
Family
ID=15298688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14172294A Pending JPH082417A (en) | 1994-06-23 | 1994-06-23 | Information transmission device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH082417A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008034945A (en) * | 2006-07-26 | 2008-02-14 | Kenwood Corp | Host device for communication system, and host device control method and program |
-
1994
- 1994-06-23 JP JP14172294A patent/JPH082417A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008034945A (en) * | 2006-07-26 | 2008-02-14 | Kenwood Corp | Host device for communication system, and host device control method and program |
| JP4736990B2 (en) * | 2006-07-26 | 2011-07-27 | 株式会社ケンウッド | COMMUNICATION SYSTEM HOST DEVICE, HOST DEVICE CONTROL METHOD, AND PROGRAM |
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