JP2002152182A - Data transmission system of radio buoy - Google Patents
Data transmission system of radio buoyInfo
- Publication number
- JP2002152182A JP2002152182A JP2000381052A JP2000381052A JP2002152182A JP 2002152182 A JP2002152182 A JP 2002152182A JP 2000381052 A JP2000381052 A JP 2000381052A JP 2000381052 A JP2000381052 A JP 2000381052A JP 2002152182 A JP2002152182 A JP 2002152182A
- Authority
- JP
- Japan
- Prior art keywords
- data transmission
- transmission
- radio buoy
- transmission system
- data
- 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
- Arrangements For Transmission Of Measured Signals (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Communication Control (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、洋上に設置、または浮
遊させて、自己位置、水温、海流の流速、流向等の測定
するラジオブイから、測定データを基地局、或いは母船
に伝送する際に使用されるデータ伝送方式に関するもの
である。BACKGROUND OF THE INVENTION The present invention relates to a method for transmitting measurement data to a base station or a mother ship from a radio buoy which is installed or floated on the sea to measure its own position, water temperature, current velocity, current direction, etc. It concerns the data transmission scheme used.
【０００２】[0002]
【従来の技術】従来から洋上で使用されるラジオブイと
の通信にはその通達距離の関係から中短波、短波が使用
されている。この周波数帯は通達距離は大きく取れる
が、空電や夜間の電離層伝播による混信が大きく通信が
妨害されることが多くあった。従来のラジオブイでは、
自局符号を低速のモールス符号で送信する程度の情報量
であったから上記妨害を受けても、長時間の受信によれ
ば、その内容を解読することは可能であり、大きな問題
とはならなかった。近年になって、ラジオブイに種々の
計測器が搭載され、その計測データを基地局や母船に伝
送することが行われるようになってきた。この場合従来
のモールス符号の伝送と比較すると、格段の情報量とな
るため伝送に長時間が必要となる。このため、空電等に
よる受信妨害が多発し、有効なデータ伝送に大きな障害
となっている。2. Description of the Related Art Conventionally, medium and short waves and short waves have been used for communication with radio buoys used on the sea because of their communication distances. In this frequency band, the communication distance can be large, but communication is often interrupted due to heavy interference due to static electricity or nighttime ionospheric propagation. With traditional radio buoys,
Since the information amount was such that the local code was transmitted with a low-speed Morse code, even if the above-mentioned interference was received, it was possible to decode the contents according to long-time reception, and this did not pose a major problem. Was. In recent years, various measuring instruments have been mounted on radio buoys, and the measured data has been transmitted to base stations and mother ships. In this case, compared to the conventional Morse code transmission, the amount of information is extremely large, and a long time is required for transmission. For this reason, reception interference due to static electricity or the like frequently occurs, which is a major obstacle to effective data transmission.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記のよう
な問題を回避して、データ伝送を確実にするために為さ
れたものである。SUMMARY OF THE INVENTION The present invention has been made to avoid the above problems and to ensure data transmission.
【０００４】[0004]
【課題を解決するための手段】本発明によるデータ伝送
呼出方式は、送信要求信号の受信待機時に受信される空
電等の妨害波のレベルを監視し、そのレベルの高低によ
ってデータ伝送反復回数を制御する。 また、送信要求
を行う基地局、或いは母船においても送信要求発射時の
空電等の妨害波のレベルに応じてデータ伝送反復回数を
送信要求信号に添付して、ラジオブイのデータ伝送回数
を制御する。A data transmission calling system according to the present invention monitors the level of an interference wave such as static received when a transmission request signal is waiting to be received, and determines the number of repetitions of data transmission based on the level of the level. Control. Also, in the base station or the mother ship making the transmission request, the number of data transmission repetitions is attached to the transmission request signal in accordance with the level of interfering waves such as static electricity at the time of transmitting the transmission request, and the number of data transmissions of the radio buoy is controlled. .
【０００５】[0005]
【作用】上記のように、本発明のラジオブイのデータ伝
送方式によれば、妨害波のレベルによって発生するデー
タ欠損の頻度が予想されるから、これを凌駕するデータ
伝送反復回数を設定しておけば、データ伝送の確実性を
保持することができる。As described above, according to the data transmission system of the radio buoy of the present invention, the frequency of data loss caused by the level of the interfering wave is expected. Therefore, the number of data transmission repetitions exceeding this can be set. Thus, the reliability of data transmission can be maintained.
【０００６】[0006]
【実施例】以下，本発明の一実施例について図面を参照
して説明する。図１は請求項１の発明のラジオブイのデ
ータ伝送方式を実行する装置の動作の系統を示す図であ
る。１はアンテナであって、送受信に共用される。２は
受信機であって、基地局、或いは母船からの送信要求信
号を受信すると共に、受信レベルを測定コード化する。
３はコード解読器であって、送信要求信号の内容を解読
する。４は計測装置であって、ＧＰＳ受信機、水温計、
流速・流向計、或いは、風向・風速計等である。５はコ
ード変換器であって、計測装置４からの計測データをコ
ード化する。６は変調器であって、コード変換器５でコ
ード化されたディジタルデータを変調信号に変換する。
７は送信制御器であって、送信機８に対してデータ伝送
反復回数、及び送信シーケンスの制御を行う。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a system of operation of an apparatus for executing a radio buoy data transmission system according to the first aspect of the present invention. Reference numeral 1 denotes an antenna, which is shared for transmission and reception. Reference numeral 2 denotes a receiver, which receives a transmission request signal from a base station or a mother ship and converts the reception level into a measurement code.
A code decoder 3 decodes the contents of the transmission request signal. Reference numeral 4 denotes a measuring device, which includes a GPS receiver, a water thermometer,
It is a flow velocity / direction meter, or a wind direction / anemometer. Reference numeral 5 denotes a code converter, which codes measurement data from the measurement device 4. Reference numeral 6 denotes a modulator, which converts the digital data coded by the code converter 5 into a modulated signal.
A transmission controller 7 controls the transmitter 8 for the number of data transmission repetitions and the transmission sequence.
【０００７】次に動作について説明する。受信機１は送
信要求を受信するまでは、受信待機の状態にあるから、
空電等の妨害波のレベルを常時測定することができる。
このコード化された測定結果は、送信制御器７で時々刻
々データ伝送反復回数に変換される。送信要求信号が受
信されると、送信制御器７を介して、送信機８が駆動さ
れてデータ伝送が開始される。このときのデータ伝送反
復回数は、送信制御器７に設定されている最新妨害波レ
ベルで設定された回数となる。Next, the operation will be described. Since the receiver 1 is in a reception standby state until receiving the transmission request,
The level of interference waves such as static electricity can be constantly measured.
The coded measurement result is converted by the transmission controller 7 from time to time into the number of data transmission repetitions. When the transmission request signal is received, the transmitter 8 is driven via the transmission controller 7 to start data transmission. The number of data transmission repetitions at this time is the number set at the latest interference wave level set in the transmission controller 7.
【０００８】請求項２に記載の発明においての装置の構
成は図１と同様である。基地局、或いは母船での空電等
の妨害波レベルを受信機２で常時測定し、その測定値を
コード変換器５で妨害波レベルに対応したデータ伝送反
復回数にコード化する。送信制御器７はコード化された
反復回数を送信要求信号に付加し、変調器６、送信機８
を介して送信する。この送信要求信号を受信したラジオ
ブイでは、送信要求信号の含まれた反復回数データをコ
ード解読器３で解読し、この反復回数を送信制御器７の
設定する。 これによって、ラジオブイからは基地局、
或いは母船で設定された反復回数だけ送信する。The structure of the device according to the second aspect is the same as that of FIG. The level of the disturbance such as static electricity at the base station or the mother ship is constantly measured by the receiver 2, and the measured value is coded by the code converter 5 into the number of data transmission repetitions corresponding to the level of the disturbance. The transmission controller 7 adds the coded number of repetitions to the transmission request signal, and the modulator 6 and the transmitter 8
To send over. In the radio buoy receiving the transmission request signal, the code decoder 3 decodes the repetition number data including the transmission request signal, and the transmission controller 7 sets the number of repetitions. This allows base stations from radio buoys,
Alternatively, transmission is performed for the number of repetitions set by the mother ship.
【０００９】[0009]
【発明の効果】上記のように、本発明によるラジオブイ
のデータ伝送方式によれば、空電等の妨害波のレベルの
対応してデータ伝送反復回数が設定されるから、短波帯
での遠距離データ伝送の確実性を高めることができる。As described above, according to the data transmission system of the radio buoy according to the present invention, since the number of times of data transmission repetition is set in accordance with the level of an interfering wave such as static electricity, a long distance in a short wave band is set. The reliability of data transmission can be increased.
【図１】図１は本発明のラジオブイのデータ伝送方式を
実行する装置の動作の系統を示す図である。FIG. 1 is a diagram showing an operation system of an apparatus for executing a data transmission method of a radio buoy according to the present invention.
１；アンテナ ２；受信機 ３；コード解読
器 ４；計測装置 ５；コード変換器 ６；変調器 ７；送信制御器
８；送信機REFERENCE SIGNS LIST 1 antenna 2 receiver 3 code decoder 4 measuring device 5 code converter 6 modulator 7 transmission controller 8 transmitter
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2F073 AA01 AA40 AB02 AB03 BB01 BC02 CC01 DE11 GG01 2F076 BB11 BE18 5K014 AA01 AA03 DA03 DA05 FA11 GA01 HA05 5K034 AA06 EE03 HH01 HH02 HH11 MM03 TT01 TT02 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2F073 AA01 AA40 AB02 AB03 BB01 BC02 CC01 DE11 GG01 2F076 BB11 BE18 5K014 AA01 AA03 DA03 DA05 FA11 GA01 HA05 5K034 AA06 EE03 HH01 HH02 HH11 MM03 TT01 TT02
Claims (2)
水温、海流の流速、流向等の観測データを、基地局、或
いは母船からの送信要求指令に従って送出するラジオブ
イのデータ伝送方式おいて、 ラジオブイに設置した呼出信号受信用の受信機で測定さ
れる空電の強度によって、データ伝送回数を制御するよ
うにしたことを特徴とするラジオブイのデータ伝送方式(1) self-positioning by placing or floating on the sea,
In a radio buoy data transmission system that transmits observation data such as water temperature, ocean current flow velocity, and current direction in accordance with a transmission request command from a base station or a mother ship, the air measured by a paging signal receiver installed on the radio buoy Radio buoy data transmission system characterized in that the number of data transmissions is controlled by the intensity of the electricity
を、基地局、或いは母船で測定される空電の強度に対応
して反復回数を指定した送信要求指令によって、行うよ
うにしたことを特徴とするラジオブイのデータ伝送方式2. The method according to claim 1, wherein the control of the number of data transmissions is performed by a transmission request command designating the number of repetitions corresponding to the intensity of static electricity measured at the base station or the mother ship. Radio buoy data transmission system
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000381052A JP2002152182A (en) | 2000-11-10 | 2000-11-10 | Data transmission system of radio buoy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000381052A JP2002152182A (en) | 2000-11-10 | 2000-11-10 | Data transmission system of radio buoy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002152182A true JP2002152182A (en) | 2002-05-24 |
Family
ID=18849134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000381052A Pending JP2002152182A (en) | 2000-11-10 | 2000-11-10 | Data transmission system of radio buoy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002152182A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018042115A (en) * | 2016-09-07 | 2018-03-15 | 株式会社デンソー | Communication system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6248827A (en) * | 1985-08-28 | 1987-03-03 | Nec Corp | Data transmission system |
| JPS63204938A (en) * | 1987-02-20 | 1988-08-24 | Nippon Telegr & Teleph Corp <Ntt> | Signal transmission system |
| JPH036056Y2 (en) * | 1985-04-17 | 1991-02-15 | ||
| JPH03122656U (en) * | 1990-03-22 | 1991-12-13 | ||
| JPH0682587U (en) * | 1993-04-28 | 1994-11-25 | 日本マリナ株式会社 | Radio buoy with GPS sensor |
| JPH07170307A (en) * | 1993-08-20 | 1995-07-04 | Hitachi Ltd | Device and method for deciding signal arrangement dimension of quadrature amplitude modulation signal at communication receiver |
| JP2000266792A (en) * | 1999-03-17 | 2000-09-29 | Anritsu Corp | Spectrum analyzer |
-
2000
- 2000-11-10 JP JP2000381052A patent/JP2002152182A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH036056Y2 (en) * | 1985-04-17 | 1991-02-15 | ||
| JPS6248827A (en) * | 1985-08-28 | 1987-03-03 | Nec Corp | Data transmission system |
| JPS63204938A (en) * | 1987-02-20 | 1988-08-24 | Nippon Telegr & Teleph Corp <Ntt> | Signal transmission system |
| JPH03122656U (en) * | 1990-03-22 | 1991-12-13 | ||
| JPH0682587U (en) * | 1993-04-28 | 1994-11-25 | 日本マリナ株式会社 | Radio buoy with GPS sensor |
| JPH07170307A (en) * | 1993-08-20 | 1995-07-04 | Hitachi Ltd | Device and method for deciding signal arrangement dimension of quadrature amplitude modulation signal at communication receiver |
| JP2000266792A (en) * | 1999-03-17 | 2000-09-29 | Anritsu Corp | Spectrum analyzer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018042115A (en) * | 2016-09-07 | 2018-03-15 | 株式会社デンソー | Communication system |
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