JP2814588B2 - Wireless monitoring device - Google Patents

Wireless monitoring device

Info

Publication number
JP2814588B2
JP2814588B2 JP1192931A JP19293189A JP2814588B2 JP 2814588 B2 JP2814588 B2 JP 2814588B2 JP 1192931 A JP1192931 A JP 1192931A JP 19293189 A JP19293189 A JP 19293189A JP 2814588 B2 JP2814588 B2 JP 2814588B2
Authority
JP
Japan
Prior art keywords
transmission
monitor
wireless monitoring
communication packet
monitoring device
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.)
Expired - Lifetime
Application number
JP1192931A
Other languages
Japanese (ja)
Other versions
JPH0357327A (en
Inventor
猛 村松
俊一 長本
照恵 竹中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1192931A priority Critical patent/JP2814588B2/en
Publication of JPH0357327A publication Critical patent/JPH0357327A/en
Application granted granted Critical
Publication of JP2814588B2 publication Critical patent/JP2814588B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、無線電波を利用してモニタ情報を送信する
ワイヤレスモニタ装置に関する。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless monitor device that transmits monitor information using radio waves.

従来の技術 従来のワイヤレスモニタ装置では、第4図に示すよう
に、機器1より入力された入力信号が、モニタ入力部2
で数値化,または2値化される。符号化部3において
は、モニタ入力部2で数値化,2値化されたモニタ情報値
が変化すると、アドレスや通信制御コード等が付加され
て通信パケットが生成される。送信部4は、生成された
通信パケットをUHF波やVHF波による無線電波を搬送波と
して送信する。よって機器1よりの入力信号が変化する
と直ちに送信出力が発せられていた。
2. Description of the Related Art In a conventional wireless monitor device, as shown in FIG.
Is digitized or binarized. In the encoding unit 3, when the monitor information value digitized and binarized by the monitor input unit 2 changes, an address, a communication control code, and the like are added to generate a communication packet. The transmitting unit 4 transmits the generated communication packet using a radio wave of a UHF wave or a VHF wave as a carrier wave. Therefore, the transmission output is generated immediately when the input signal from the device 1 changes.

発明が解決しようとする課題 しかしながら上記のような構成では、モニタ情報が変
化すると直ちに送信出力が発せられるので、1つのワイ
ヤレスモニタ装置から頻繁に送信出力が発せられると、
他のワイヤレスモニタ装置からの情報が得られないとい
う課題を有していた。
SUMMARY OF THE INVENTION However, in the configuration as described above, a transmission output is issued immediately when the monitor information changes, so if one wireless monitoring device frequently sends a transmission output,
There is a problem that information from other wireless monitoring devices cannot be obtained.

本発明はかかる従来の課題を解消するもので、送信終
了から次の信号まで送信出力遅延時間を設けることで、
1つのワイヤレスモニタ装置が送信を占有することを防
ぎ、複数のワイヤレスモニタ装置からの送信出力がスム
ーズに行えるようにすることを目的とする。
The present invention solves such a conventional problem, and by providing a transmission output delay time from the end of transmission to the next signal,
It is an object of the present invention to prevent a single wireless monitoring device from occupying transmission and to enable transmission output from a plurality of wireless monitoring devices to be performed smoothly.

課題を解決するための手段 上記課題を解決するために本発明のワイヤレスモニタ
装置は、通信パケットを送信出力中の時間Tをカウント
し、時間Tと設定された数値nとの積だけ時間が通過す
るまで次の送信指示出力を遅らせることとした送信出力
指示部を設けたものである。また数値nをワイヤレスモ
ニタ装置の設置台数に応じて設定するものである。
Means for Solving the Problems In order to solve the above problems, the wireless monitor device of the present invention counts the time T during the transmission output of the communication packet, and passes the time by the product of the time T and the set value n. The transmission output instructing unit is arranged to delay the next transmission instruction output until the transmission instruction is output. Also, the numerical value n is set according to the number of installed wireless monitor devices.

作用 本発明は上記した構成によって、送信出力が発せられ
ると、送信出力指示部によって送信時間Tが計られ、あ
らかじめ設定されている数値nと積がとられる。通信パ
ケットの送信が終了すると積の値nTがタイマーにセット
され減算カウントが始まり0になったときに送信指示出
力が出力される。したがって減算カウント中に次の通信
パケットが生成されると、送信開始はカウント終了まで
待たされる。よって頻繁に送信パケットが生成されて
も、1度送信が発せられると、次の送信まで設定によっ
て計算されたnT時間待たされるので、送信時間の占有は
一定率以内に制限することができる。また数値nはワイ
ヤレスモニタ装置の設置台数に応じて設定するので効率
的に送信時間の共有ができる。
According to the present invention, when a transmission output is generated by the above-described configuration, the transmission time T is measured by the transmission output instructing unit, and the product is multiplied by a preset value n. When the transmission of the communication packet is completed, the product value nT is set in the timer, the subtraction count starts, and the transmission instruction output is output when the count becomes 0. Therefore, when the next communication packet is generated during the subtraction counting, the transmission start is waited until the counting ends. Therefore, even if a transmission packet is frequently generated, once a transmission is issued, the transmission waits for nT time calculated by the setting until the next transmission, so that the occupation of the transmission time can be limited within a certain rate. Further, since the numerical value n is set according to the number of installed wireless monitoring devices, the transmission time can be shared efficiently.

実施例 以下本発明の実施例を添付図面にもとづいて説明す
る。第1図は本発明のワイヤレスモニタ装置の応用シス
テム例である。機器1よりのモニタ信号はワイヤレスモ
ニタ装置5に入力され、運転,停止の状態を表わすため
に2値化される。2値化されたモニタ情報が変化する
と、自己アドレス,通信制御コード,チェックコードを
加えて通信パケットが生成され、受信機6へ送信され
る。受信機6では、受信した通信パケットが正しく受信
されているかをチェックコードによってチェックし、正
しく受信されていればモニタ表示部7に自己アドレスと
モニタ情報を送る。モニタ表示部7は、あらかじめ設定
してあるアドレスと自己アドレスが一致した部分の表示
内容を、受信したモニタ情報に変える。上記一連の動作
によって、複数のワイヤレスモニタ装置5はそれぞれ接
続された機器1の運転,停止状態を離れた所にあるモニ
タ表示部7に表示させている。第2図は本発明のワイヤ
レスモニタ装置の回路ブロック図である。機器1のモニ
タ信号はモニタ入力部2に入力され、運転,停止状態に
対応して2値化される。符号化部3は、モニタ情報が変
化すると、設定されている自己アドレス,通信制御コー
ド,モニタ情報およびチェックコードによって通信パケ
ットを生成する。送信部4は、VHF波またはUHF波の高周
波信号を搬送波とし、FM変調またはAM変調を加えること
で通信パケットの無線伝送を行う。第3図は本発明のワ
イヤレスモニタ装置の送信タイミング図である。モニタ
入力(a)があったときに、送信出力指示部8は送信指
示出力(b)を出力するとともに送信部4から送信出力
される通信パケット(c)の送信時間T1のカウントを行
う。そして送信が終了するとあらかじめ設定されている
数値nとカウントした送信時間T1の積が減算カウンタに
セットされ減算が始まる。減算中に次のモニタ入力
(d)があって通信パケットが符号化部3に生成された
場合はnT1の減算カウント終了時に送信指示出力(e)
が出され通信パケット(f)の送信が遅らされる。また
モニタ入力(g)のように減算カウント終了後の場合に
は直ちに送信指示出力(h)が出るので通信パケット
(i)は遅れない。送信時間Tと積をとる数値nは、デ
イップスイッチ等で設定され、例えばワイヤレスモニタ
装置5の台数に比例して大きくする。
An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an example of an application system of the wireless monitor device of the present invention. The monitor signal from the device 1 is input to the wireless monitor device 5 and is binarized to represent the operation and stop states. When the binarized monitor information changes, a communication packet is generated by adding the self address, the communication control code, and the check code, and is transmitted to the receiver 6. The receiver 6 checks whether or not the received communication packet is correctly received by a check code. If the received communication packet is correctly received, the receiver 6 sends its own address and monitor information to the monitor display unit 7. The monitor display section 7 changes the display content of the portion where the self-address matches the address set in advance to the received monitor information. Through the above-described series of operations, the plurality of wireless monitor devices 5 display the operation and stop states of the connected devices 1 on the monitor display unit 7 at a remote location. FIG. 2 is a circuit block diagram of the wireless monitor device of the present invention. The monitor signal of the device 1 is input to the monitor input unit 2 and is binarized in accordance with the operation / stop state. When the monitor information changes, the encoding unit 3 generates a communication packet based on the set self address, communication control code, monitor information, and check code. The transmitting unit 4 performs radio transmission of a communication packet by using a high frequency signal of a VHF wave or a UHF wave as a carrier wave and applying FM modulation or AM modulation. FIG. 3 is a transmission timing chart of the wireless monitor device of the present invention. When there is a monitor input (a), the transmission output instruction unit 8 outputs a transmission instruction output (b) and counts the transmission time T1 of the communication packet (c) transmitted and output from the transmission unit 4. When the transmission is completed, the product of the preset value n and the counted transmission time T1 is set in the subtraction counter, and the subtraction starts. If the next monitor input (d) is present during the subtraction and a communication packet is generated in the encoding unit 3, the transmission instruction output (e) at the end of the subtraction count of nT1.
And the transmission of the communication packet (f) is delayed. Also, in the case where the countdown is completed as in the case of the monitor input (g), the transmission instruction output (h) is immediately output, so that the communication packet (i) is not delayed. The numerical value n obtained by multiplying the transmission time T by a product is set by a dip switch or the like, and is increased in proportion to the number of the wireless monitoring devices 5, for example.

上記構成によって、頻繁に機器の状態が変化し、常に
通信パケットが生成されても、1度送信出力が発せられ
ると、次の送信までn時間待たされる。したがって1つ
のワイヤレスモニタ装置が送信を占有することが防げ
る。また、ワイヤレスモニタ装置数に合わせて数値nを
設定することで、効率的に送信時間の共有ができる。
With the above configuration, even if the state of the device changes frequently and a communication packet is always generated, once a transmission output is issued, the device waits for n hours until the next transmission. Therefore, it is possible to prevent one wireless monitoring device from occupying transmission. Also, by setting the numerical value n according to the number of wireless monitoring devices, transmission time can be shared efficiently.

発明の効果 以上のように本発明のワイヤレスモニタ装置によれ
ば、送信終了時から送信時間Tと設定された数値nとの
積だけ経過するまで、次の送信開始時間を遅らせる送信
出力指示部を設けたので、複数のワイヤレスモニタ装置
によって応用システムを組んでも、1つのワイヤレスモ
ニタ装置が送信を占有することなく、設定された一定率
以下に送信時間の占有が制限でき、お互いの送信がスム
ーズに行える。また、送信時間と積をとる数値nはワイ
ヤレスモニタ装置の設定台数に応じて設定するので効果
的に送信時間の共有ができる。
Effect of the Invention As described above, according to the wireless monitor device of the present invention, the transmission output instruction unit that delays the next transmission start time from the end of transmission until the product of the transmission time T and the set value n has elapsed. With this configuration, even when an application system is formed by a plurality of wireless monitoring devices, the occupation of the transmission time can be limited to a fixed rate or less without a single wireless monitoring device occupying the transmission. I can do it. Further, since the numerical value n, which is the product of the transmission time and the product, is set according to the set number of wireless monitoring devices, the transmission time can be effectively shared.

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

第1図は本発明の一実施例におけるワイヤレスモニタ装
置のシステム図、第2図は同装置の回路ブロック図、第
3図は同装置の送信タイミング図、第4図は従来のワイ
ヤレスモニタ装置の回路ブロック図である。 2……モニタ入力部、3……符号化部、4……送信部、
8……送信出力指示部。
FIG. 1 is a system diagram of a wireless monitoring device according to an embodiment of the present invention, FIG. 2 is a circuit block diagram of the device, FIG. 3 is a transmission timing diagram of the device, and FIG. It is a circuit block diagram. 2 ... monitor input section, 3 ... encoding section, 4 ... transmission section,
8. Transmission output instruction unit.

フロントページの続き (58)調査した分野(Int.Cl.6,DB名) H04B 7/24 - 7/26 H04L 11/00 H04L 11/02 - 11/15 H04L 11/18 - 11/26 H04Q 7/00 - 7/38Continued on the front page (58) Fields surveyed (Int.Cl. 6 , DB name) H04B 7/24-7/26 H04L 11/00 H04L 11/02-11/15 H04L 11/18-11/26 H04Q 7 / 00-7/38

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】入力信号を数値化するモニタ入力部と、前
記モニタ入力部により数値化されたモニタ情報が変化す
るとアドレス情報を付加して通信パケットを生成する符
号化部と、前記符号化部により通信パケットが生成され
ると送信指示出力に同期して前記通信パケットを無線に
よって送信する送信部とで構成し、前記モニタ情報の送
信タイミングを、前回の送信動作の終了時点から前記通
信パケットの送信時間Tとあらかじめ設定された数値n
との積の時間だけ経過するまで意図的に遅らせることを
特徴とするワイヤレスモニタ装置。
1. A monitor input unit for digitizing an input signal, an encoding unit for adding address information to generate a communication packet by adding address information when monitor information digitized by the monitor input unit changes, and the encoding unit A communication unit that wirelessly transmits the communication packet in synchronism with a transmission instruction output when a communication packet is generated, and sets the transmission timing of the monitor information from the end of the previous transmission operation. Transmission time T and a preset value n
A wireless monitoring device characterized in that it is intentionally delayed until a time equal to the product of the product and the time elapses.
【請求項2】数値nはワイヤレスモニタ装置の設置台数
に応じて設定する請求項1記載のワイヤレスモニタ装
置。
2. The wireless monitoring device according to claim 1, wherein the value n is set according to the number of installed wireless monitoring devices.
JP1192931A 1989-07-25 1989-07-25 Wireless monitoring device Expired - Lifetime JP2814588B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1192931A JP2814588B2 (en) 1989-07-25 1989-07-25 Wireless monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1192931A JP2814588B2 (en) 1989-07-25 1989-07-25 Wireless monitoring device

Publications (2)

Publication Number Publication Date
JPH0357327A JPH0357327A (en) 1991-03-12
JP2814588B2 true JP2814588B2 (en) 1998-10-22

Family

ID=16299379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1192931A Expired - Lifetime JP2814588B2 (en) 1989-07-25 1989-07-25 Wireless monitoring device

Country Status (1)

Country Link
JP (1) JP2814588B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4874730B2 (en) * 2006-07-19 2012-02-15 フルタ電機株式会社 Blower with ring for protection

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62196944A (en) * 1986-02-25 1987-08-31 Matsushita Electric Works Ltd Wireless data transmission system

Also Published As

Publication number Publication date
JPH0357327A (en) 1991-03-12

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